diff --git a/.nojekyll b/.nojekyll new file mode 100644 index 0000000..e69de29 diff --git a/ParserWorker.63cd6336.js b/ParserWorker.63cd6336.js deleted file mode 100644 index 1818359..0000000 --- a/ParserWorker.63cd6336.js +++ /dev/null @@ -1,39120 +0,0 @@ -// modules are defined as an array -// [ module function, map of requires ] -// -// map of requires is short require name -> numeric require -// -// anything defined in a previous bundle is accessed via the -// orig method which is the require for previous bundles -parcelRequire = (function (modules, cache, entry, globalName) { - // Save the require from previous bundle to this closure if any - var previousRequire = typeof parcelRequire === 'function' && parcelRequire; - var nodeRequire = typeof require === 'function' && require; - - function newRequire(name, jumped) { - if (!cache[name]) { - if (!modules[name]) { - // if we cannot find the module within our internal map or - // cache jump to the current global require ie. the last bundle - // that was added to the page. - var currentRequire = typeof parcelRequire === 'function' && parcelRequire; - if (!jumped && currentRequire) { - return currentRequire(name, true); - } - - // If there are other bundles on this page the require from the - // previous one is saved to 'previousRequire'. Repeat this as - // many times as there are bundles until the module is found or - // we exhaust the require chain. - if (previousRequire) { - return previousRequire(name, true); - } - - // Try the node require function if it exists. - if (nodeRequire && typeof name === 'string') { - return nodeRequire(name); - } - - var err = new Error('Cannot find module \'' + name + '\''); - err.code = 'MODULE_NOT_FOUND'; - throw err; - } - - localRequire.resolve = resolve; - localRequire.cache = {}; - - var module = cache[name] = new newRequire.Module(name); - - modules[name][0].call(module.exports, localRequire, module, module.exports, this); - } - - return cache[name].exports; - - function localRequire(x){ - return newRequire(localRequire.resolve(x)); - } - - function resolve(x){ - return modules[name][1][x] || x; - } - } - - function Module(moduleName) { - this.id = moduleName; - this.bundle = newRequire; - this.exports = {}; - } - - newRequire.isParcelRequire = true; - newRequire.Module = Module; - newRequire.modules = modules; - newRequire.cache = cache; - newRequire.parent = previousRequire; - newRequire.register = function (id, exports) { - modules[id] = [function (require, module) { - module.exports = exports; - }, {}]; - }; - - var error; - for (var i = 0; i < entry.length; i++) { - try { - newRequire(entry[i]); - } catch (e) { - // Save first error but execute all entries - if (!error) { - error = e; - } - } - } - - if (entry.length) { - // Expose entry point to Node, AMD or browser globals - // Based on https://github.com/ForbesLindesay/umd/blob/master/template.js - var mainExports = newRequire(entry[entry.length - 1]); - - // CommonJS - if (typeof exports === "object" && typeof module !== "undefined") { - module.exports = mainExports; - - // RequireJS - } else if (typeof define === "function" && define.amd) { - define(function () { - return mainExports; - }); - - // \n\n\n","\n\n\n","\n\n\n","\n\n\n\n\n","import { CityJSONLoader } from './base/CityJSONLoader.js';\nimport { CityJSONWorkerParser } from './parsers/CityJSONWorkerParser.js';\nimport { CityJSONParser } from './parsers/CityJSONParser.js';\nimport { ChunkParser } from './parsers/helpers/ChunkParser.js';\n\nimport { CityObjectsMesh } from './objects/CityObjectsMesh.js';\nimport { CityObjectsInstancedMesh } from './objects/CityObjectsInstancedMesh.js';\nimport { CityObjectsLines } from './objects/CityObjectsLines.js';\nimport { CityObjectsPoints } from './objects/CityObjectsPoints.js';\n\nimport { CityObjectsMaterial } from './materials/CityObjectsMaterial.js';\nimport { CityObjectsLineMaterial } from './materials/CityObjectsLineMaterial.js';\nimport { CityObjectsPointsMaterial } from './materials/CityObjectsPointsMaterial.js';\n\nimport { AttributeEvaluator } from './helpers/AttributeEvaluator.js';\nimport { TextureManager } from './helpers/TextureManager.js';\n\nexport {\n\tCityJSONLoader,\n\tCityJSONWorkerParser,\n\tCityJSONParser,\n\tChunkParser,\n\n\tCityObjectsInstancedMesh,\n\tCityObjectsMesh,\n\tCityObjectsLines,\n\tCityObjectsPoints,\n\n\tCityObjectsMaterial,\n\tCityObjectsLineMaterial,\n\tCityObjectsPointsMaterial,\n\n\tAttributeEvaluator,\n\tTextureManager\n};\n","import { Vector3 } from 'three';\nimport {\n\tBufferAttribute,\n\tBufferGeometry,\n\tGroup,\n\tMatrix4 } from 'three';\nimport { CityJSONWorkerParser } from '../parsers/CityJSONWorkerParser';\n\nexport class CityJSONLoader {\n\n\tconstructor( parser ) {\n\n\t\tthis.texturesPath = '';\n\t\tthis.scene = new Group();\n\t\tthis.matrix = null;\n\t\tthis.boundingBox = null;\n\t\tthis.parser = parser || new CityJSONWorkerParser();\n\n\t}\n\n\tsetTexturesPath( path ) {\n\n\t\tthis.texturesPath = path;\n\n\t}\n\n\tload( data ) {\n\n\t\tif ( typeof data === \"object\" ) {\n\n\t\t\t// We shallow clone the object to avoid modifying the original\n\t\t\t// objects vertices\n\t\t\tconst new_data = Object.assign( {}, data );\n\t\t\t// new_data.vertices = this.applyTransform( data );\n\t\t\tconst transform = new Matrix4().identity();\n\n\t\t\tif ( data[ \"transform\" ] != undefined ) {\n\n\t\t\t\tconst t = data.transform.translate;\n\t\t\t\tconst s = data.transform.scale;\n\n\t\t\t\ttransform.set(\n\t\t\t\t\ts[ 0 ], 0, 0, t[ 0 ],\n\t\t\t\t\t0, s[ 1 ], 0, t[ 1 ],\n\t\t\t\t\t0, 0, s[ 2 ], t[ 2 ],\n\t\t\t\t\t0, 0, 0, 1\n\t\t\t\t);\n\n\t\t\t}\n\n\t\t\tif ( this.matrix == null ) {\n\n\t\t\t\tthis.computeMatrix( new_data );\n\n\t\t\t\tthis.matrix = transform;\n\t\t\t\tthis.matrix.setPosition( 0, 0, 0 );\n\n\t\t\t}\n\n\t\t\tthis.parser.matrix = this.matrix;\n\t\t\tthis.parser.parse( new_data, this.scene );\n\n\t\t}\n\n\t}\n\n\tapplyTransform( data ) {\n\n\t\tif ( data[ \"transform\" ] != undefined ) {\n\n\t\t\tconst t = data.transform.translate;\n\t\t\tconst s = data.transform.scale;\n\n\t\t\tconst vertices = data.vertices.map( v =>\n\t\t\t\t[\n\t\t\t\t\tv[ 0 ] * s[ 0 ] + t[ 0 ],\n\t\t\t\t\tv[ 1 ] * s[ 1 ] + t[ 1 ],\n\t\t\t\t\tv[ 2 ] * s[ 2 ] + t[ 2 ]\n\t\t\t\t]\n\t\t\t);\n\n\t\t\treturn vertices;\n\n\t\t}\n\n\t\treturn data.vertices;\n\n\t}\n\n\t/**\n\t * Computes a matrix that transforms the dataset close to the origin.\n\t *\n\t * @param {Object} data The CityJSON data\n\t */\n\tcomputeMatrix( data, scale = false ) {\n\n\t\tconst normGeom = new BufferGeometry();\n\n\t\tconst vertices = new Float32Array( data.vertices.map( v => [ v[ 0 ], v[ 1 ], v[ 2 ] ] ).flat() );\n\t\tnormGeom.setAttribute( 'position', new BufferAttribute( vertices, 3 ) );\n\n\t\tnormGeom.computeBoundingBox();\n\t\tthis.boundingBox = normGeom.boundingBox;\n\t\tconst centre = new Vector3();\n\n\t\tnormGeom.boundingBox.getCenter( centre );\n\t\tcentre.setZ( 0 );\n\t\t// const radius = normGeom.boundingSphere.radius;\n\n\t\t// const s = scale ? radius === 0 ? 1 : 1.0 / radius : 1;\n\t\tconst s = 1;\n\n\t\tconst matrix = new Matrix4();\n\t\tmatrix.set(\n\t\t\ts, 0, 0, - s * centre.x,\n\t\t\t0, s, 0, - s * centre.y,\n\t\t\t0, 0, s, - s * centre.z,\n\t\t\t0, 0, 0, 1\n\t\t);\n\n\t\tthis.matrix = matrix;\n\n\t}\n\n}\n","/**\n * @license\n * Copyright 2010-2024 Three.js Authors\n * SPDX-License-Identifier: MIT\n */\nconst REVISION = '165';\n\nconst MOUSE = { LEFT: 0, MIDDLE: 1, RIGHT: 2, ROTATE: 0, DOLLY: 1, PAN: 2 };\nconst TOUCH = { ROTATE: 0, PAN: 1, DOLLY_PAN: 2, DOLLY_ROTATE: 3 };\nconst CullFaceNone = 0;\nconst CullFaceBack = 1;\nconst CullFaceFront = 2;\nconst CullFaceFrontBack = 3;\nconst BasicShadowMap = 0;\nconst PCFShadowMap = 1;\nconst PCFSoftShadowMap = 2;\nconst VSMShadowMap = 3;\nconst FrontSide = 0;\nconst BackSide = 1;\nconst DoubleSide = 2;\nconst NoBlending = 0;\nconst NormalBlending = 1;\nconst AdditiveBlending = 2;\nconst SubtractiveBlending = 3;\nconst MultiplyBlending = 4;\nconst CustomBlending = 5;\nconst AddEquation = 100;\nconst SubtractEquation = 101;\nconst ReverseSubtractEquation = 102;\nconst MinEquation = 103;\nconst MaxEquation = 104;\nconst ZeroFactor = 200;\nconst OneFactor = 201;\nconst SrcColorFactor = 202;\nconst OneMinusSrcColorFactor = 203;\nconst SrcAlphaFactor = 204;\nconst OneMinusSrcAlphaFactor = 205;\nconst DstAlphaFactor = 206;\nconst OneMinusDstAlphaFactor = 207;\nconst DstColorFactor = 208;\nconst OneMinusDstColorFactor = 209;\nconst SrcAlphaSaturateFactor = 210;\nconst ConstantColorFactor = 211;\nconst OneMinusConstantColorFactor = 212;\nconst ConstantAlphaFactor = 213;\nconst OneMinusConstantAlphaFactor = 214;\nconst NeverDepth = 0;\nconst AlwaysDepth = 1;\nconst LessDepth = 2;\nconst LessEqualDepth = 3;\nconst EqualDepth = 4;\nconst GreaterEqualDepth = 5;\nconst GreaterDepth = 6;\nconst NotEqualDepth = 7;\nconst MultiplyOperation = 0;\nconst MixOperation = 1;\nconst AddOperation = 2;\nconst NoToneMapping = 0;\nconst LinearToneMapping = 1;\nconst ReinhardToneMapping = 2;\nconst CineonToneMapping = 3;\nconst ACESFilmicToneMapping = 4;\nconst CustomToneMapping = 5;\nconst AgXToneMapping = 6;\nconst NeutralToneMapping = 7;\nconst AttachedBindMode = 'attached';\nconst DetachedBindMode = 'detached';\n\nconst UVMapping = 300;\nconst CubeReflectionMapping = 301;\nconst CubeRefractionMapping = 302;\nconst EquirectangularReflectionMapping = 303;\nconst EquirectangularRefractionMapping = 304;\nconst CubeUVReflectionMapping = 306;\nconst RepeatWrapping = 1000;\nconst ClampToEdgeWrapping = 1001;\nconst MirroredRepeatWrapping = 1002;\nconst NearestFilter = 1003;\nconst NearestMipmapNearestFilter = 1004;\nconst NearestMipMapNearestFilter = 1004;\nconst NearestMipmapLinearFilter = 1005;\nconst NearestMipMapLinearFilter = 1005;\nconst LinearFilter = 1006;\nconst LinearMipmapNearestFilter = 1007;\nconst LinearMipMapNearestFilter = 1007;\nconst LinearMipmapLinearFilter = 1008;\nconst LinearMipMapLinearFilter = 1008;\nconst UnsignedByteType = 1009;\nconst ByteType = 1010;\nconst ShortType = 1011;\nconst UnsignedShortType = 1012;\nconst IntType = 1013;\nconst UnsignedIntType = 1014;\nconst FloatType = 1015;\nconst HalfFloatType = 1016;\nconst UnsignedShort4444Type = 1017;\nconst UnsignedShort5551Type = 1018;\nconst UnsignedInt248Type = 1020;\nconst UnsignedInt5999Type = 35902;\nconst AlphaFormat = 1021;\nconst RGBFormat = 1022;\nconst RGBAFormat = 1023;\nconst LuminanceFormat = 1024;\nconst LuminanceAlphaFormat = 1025;\nconst DepthFormat = 1026;\nconst DepthStencilFormat = 1027;\nconst RedFormat = 1028;\nconst RedIntegerFormat = 1029;\nconst RGFormat = 1030;\nconst RGIntegerFormat = 1031;\nconst RGBAIntegerFormat = 1033;\n\nconst RGB_S3TC_DXT1_Format = 33776;\nconst RGBA_S3TC_DXT1_Format = 33777;\nconst RGBA_S3TC_DXT3_Format = 33778;\nconst RGBA_S3TC_DXT5_Format = 33779;\nconst RGB_PVRTC_4BPPV1_Format = 35840;\nconst RGB_PVRTC_2BPPV1_Format = 35841;\nconst RGBA_PVRTC_4BPPV1_Format = 35842;\nconst RGBA_PVRTC_2BPPV1_Format = 35843;\nconst RGB_ETC1_Format = 36196;\nconst RGB_ETC2_Format = 37492;\nconst RGBA_ETC2_EAC_Format = 37496;\nconst RGBA_ASTC_4x4_Format = 37808;\nconst RGBA_ASTC_5x4_Format = 37809;\nconst RGBA_ASTC_5x5_Format = 37810;\nconst RGBA_ASTC_6x5_Format = 37811;\nconst RGBA_ASTC_6x6_Format = 37812;\nconst RGBA_ASTC_8x5_Format = 37813;\nconst RGBA_ASTC_8x6_Format = 37814;\nconst RGBA_ASTC_8x8_Format = 37815;\nconst RGBA_ASTC_10x5_Format = 37816;\nconst RGBA_ASTC_10x6_Format = 37817;\nconst RGBA_ASTC_10x8_Format = 37818;\nconst RGBA_ASTC_10x10_Format = 37819;\nconst RGBA_ASTC_12x10_Format = 37820;\nconst RGBA_ASTC_12x12_Format = 37821;\nconst RGBA_BPTC_Format = 36492;\nconst RGB_BPTC_SIGNED_Format = 36494;\nconst RGB_BPTC_UNSIGNED_Format = 36495;\nconst RED_RGTC1_Format = 36283;\nconst SIGNED_RED_RGTC1_Format = 36284;\nconst RED_GREEN_RGTC2_Format = 36285;\nconst SIGNED_RED_GREEN_RGTC2_Format = 36286;\nconst LoopOnce = 2200;\nconst LoopRepeat = 2201;\nconst LoopPingPong = 2202;\nconst InterpolateDiscrete = 2300;\nconst InterpolateLinear = 2301;\nconst InterpolateSmooth = 2302;\nconst ZeroCurvatureEnding = 2400;\nconst ZeroSlopeEnding = 2401;\nconst WrapAroundEnding = 2402;\nconst NormalAnimationBlendMode = 2500;\nconst AdditiveAnimationBlendMode = 2501;\nconst TrianglesDrawMode = 0;\nconst TriangleStripDrawMode = 1;\nconst TriangleFanDrawMode = 2;\nconst BasicDepthPacking = 3200;\nconst RGBADepthPacking = 3201;\nconst TangentSpaceNormalMap = 0;\nconst ObjectSpaceNormalMap = 1;\n\n// Color space string identifiers, matching CSS Color Module Level 4 and WebGPU names where available.\nconst NoColorSpace = '';\nconst SRGBColorSpace = 'srgb';\nconst LinearSRGBColorSpace = 'srgb-linear';\nconst DisplayP3ColorSpace = 'display-p3';\nconst LinearDisplayP3ColorSpace = 'display-p3-linear';\n\nconst LinearTransfer = 'linear';\nconst SRGBTransfer = 'srgb';\n\nconst Rec709Primaries = 'rec709';\nconst P3Primaries = 'p3';\n\nconst ZeroStencilOp = 0;\nconst KeepStencilOp = 7680;\nconst ReplaceStencilOp = 7681;\nconst IncrementStencilOp = 7682;\nconst DecrementStencilOp = 7683;\nconst IncrementWrapStencilOp = 34055;\nconst DecrementWrapStencilOp = 34056;\nconst InvertStencilOp = 5386;\n\nconst NeverStencilFunc = 512;\nconst LessStencilFunc = 513;\nconst EqualStencilFunc = 514;\nconst LessEqualStencilFunc = 515;\nconst GreaterStencilFunc = 516;\nconst NotEqualStencilFunc = 517;\nconst GreaterEqualStencilFunc = 518;\nconst AlwaysStencilFunc = 519;\n\nconst NeverCompare = 512;\nconst LessCompare = 513;\nconst EqualCompare = 514;\nconst LessEqualCompare = 515;\nconst GreaterCompare = 516;\nconst NotEqualCompare = 517;\nconst GreaterEqualCompare = 518;\nconst AlwaysCompare = 519;\n\nconst StaticDrawUsage = 35044;\nconst DynamicDrawUsage = 35048;\nconst StreamDrawUsage = 35040;\nconst StaticReadUsage = 35045;\nconst DynamicReadUsage = 35049;\nconst StreamReadUsage = 35041;\nconst StaticCopyUsage = 35046;\nconst DynamicCopyUsage = 35050;\nconst StreamCopyUsage = 35042;\n\nconst GLSL1 = '100';\nconst GLSL3 = '300 es';\n\nconst WebGLCoordinateSystem = 2000;\nconst WebGPUCoordinateSystem = 2001;\n\n/**\n * https://github.com/mrdoob/eventdispatcher.js/\n */\n\nclass EventDispatcher {\n\n\taddEventListener( type, listener ) {\n\n\t\tif ( this._listeners === undefined ) this._listeners = {};\n\n\t\tconst listeners = this._listeners;\n\n\t\tif ( listeners[ type ] === undefined ) {\n\n\t\t\tlisteners[ type ] = [];\n\n\t\t}\n\n\t\tif ( listeners[ type ].indexOf( listener ) === - 1 ) {\n\n\t\t\tlisteners[ type ].push( listener );\n\n\t\t}\n\n\t}\n\n\thasEventListener( type, listener ) {\n\n\t\tif ( this._listeners === undefined ) return false;\n\n\t\tconst listeners = this._listeners;\n\n\t\treturn listeners[ type ] !== undefined && listeners[ type ].indexOf( listener ) !== - 1;\n\n\t}\n\n\tremoveEventListener( type, listener ) {\n\n\t\tif ( this._listeners === undefined ) return;\n\n\t\tconst listeners = this._listeners;\n\t\tconst listenerArray = listeners[ type ];\n\n\t\tif ( listenerArray !== undefined ) {\n\n\t\t\tconst index = listenerArray.indexOf( listener );\n\n\t\t\tif ( index !== - 1 ) {\n\n\t\t\t\tlistenerArray.splice( index, 1 );\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\tdispatchEvent( event ) {\n\n\t\tif ( this._listeners === undefined ) return;\n\n\t\tconst listeners = this._listeners;\n\t\tconst listenerArray = listeners[ event.type ];\n\n\t\tif ( listenerArray !== undefined ) {\n\n\t\t\tevent.target = this;\n\n\t\t\t// Make a copy, in case listeners are removed while iterating.\n\t\t\tconst array = listenerArray.slice( 0 );\n\n\t\t\tfor ( let i = 0, l = array.length; i < l; i ++ ) {\n\n\t\t\t\tarray[ i ].call( this, event );\n\n\t\t\t}\n\n\t\t\tevent.target = null;\n\n\t\t}\n\n\t}\n\n}\n\nconst _lut = [ '00', '01', '02', '03', '04', '05', '06', '07', '08', '09', '0a', '0b', '0c', '0d', '0e', '0f', '10', '11', '12', '13', '14', '15', '16', '17', '18', '19', '1a', '1b', '1c', '1d', '1e', '1f', '20', '21', '22', '23', '24', '25', '26', '27', '28', '29', '2a', '2b', '2c', '2d', '2e', '2f', '30', '31', '32', '33', '34', '35', '36', '37', '38', '39', '3a', '3b', '3c', '3d', '3e', '3f', '40', '41', '42', '43', '44', '45', '46', '47', '48', '49', '4a', '4b', '4c', '4d', '4e', '4f', '50', '51', '52', '53', '54', '55', '56', '57', '58', '59', '5a', '5b', '5c', '5d', '5e', '5f', '60', '61', '62', '63', '64', '65', '66', '67', '68', '69', '6a', '6b', '6c', '6d', '6e', '6f', '70', '71', '72', '73', '74', '75', '76', '77', '78', '79', '7a', '7b', '7c', '7d', '7e', '7f', '80', '81', '82', '83', '84', '85', '86', '87', '88', '89', '8a', '8b', '8c', '8d', '8e', '8f', '90', '91', '92', '93', '94', '95', '96', '97', '98', '99', '9a', '9b', '9c', '9d', '9e', '9f', 'a0', 'a1', 'a2', 'a3', 'a4', 'a5', 'a6', 'a7', 'a8', 'a9', 'aa', 'ab', 'ac', 'ad', 'ae', 'af', 'b0', 'b1', 'b2', 'b3', 'b4', 'b5', 'b6', 'b7', 'b8', 'b9', 'ba', 'bb', 'bc', 'bd', 'be', 'bf', 'c0', 'c1', 'c2', 'c3', 'c4', 'c5', 'c6', 'c7', 'c8', 'c9', 'ca', 'cb', 'cc', 'cd', 'ce', 'cf', 'd0', 'd1', 'd2', 'd3', 'd4', 'd5', 'd6', 'd7', 'd8', 'd9', 'da', 'db', 'dc', 'dd', 'de', 'df', 'e0', 'e1', 'e2', 'e3', 'e4', 'e5', 'e6', 'e7', 'e8', 'e9', 'ea', 'eb', 'ec', 'ed', 'ee', 'ef', 'f0', 'f1', 'f2', 'f3', 'f4', 'f5', 'f6', 'f7', 'f8', 'f9', 'fa', 'fb', 'fc', 'fd', 'fe', 'ff' ];\n\nlet _seed = 1234567;\n\n\nconst DEG2RAD = Math.PI / 180;\nconst RAD2DEG = 180 / Math.PI;\n\n// http://stackoverflow.com/questions/105034/how-to-create-a-guid-uuid-in-javascript/21963136#21963136\nfunction generateUUID() {\n\n\tconst d0 = Math.random() * 0xffffffff | 0;\n\tconst d1 = Math.random() * 0xffffffff | 0;\n\tconst d2 = Math.random() * 0xffffffff | 0;\n\tconst d3 = Math.random() * 0xffffffff | 0;\n\tconst uuid = _lut[ d0 & 0xff ] + _lut[ d0 >> 8 & 0xff ] + _lut[ d0 >> 16 & 0xff ] + _lut[ d0 >> 24 & 0xff ] + '-' +\n\t\t\t_lut[ d1 & 0xff ] + _lut[ d1 >> 8 & 0xff ] + '-' + _lut[ d1 >> 16 & 0x0f | 0x40 ] + _lut[ d1 >> 24 & 0xff ] + '-' +\n\t\t\t_lut[ d2 & 0x3f | 0x80 ] + _lut[ d2 >> 8 & 0xff ] + '-' + _lut[ d2 >> 16 & 0xff ] + _lut[ d2 >> 24 & 0xff ] +\n\t\t\t_lut[ d3 & 0xff ] + _lut[ d3 >> 8 & 0xff ] + _lut[ d3 >> 16 & 0xff ] + _lut[ d3 >> 24 & 0xff ];\n\n\t// .toLowerCase() here flattens concatenated strings to save heap memory space.\n\treturn uuid.toLowerCase();\n\n}\n\nfunction clamp( value, min, max ) {\n\n\treturn Math.max( min, Math.min( max, value ) );\n\n}\n\n// compute euclidean modulo of m % n\n// https://en.wikipedia.org/wiki/Modulo_operation\nfunction euclideanModulo( n, m ) {\n\n\treturn ( ( n % m ) + m ) % m;\n\n}\n\n// Linear mapping from range to range \nfunction mapLinear( x, a1, a2, b1, b2 ) {\n\n\treturn b1 + ( x - a1 ) * ( b2 - b1 ) / ( a2 - a1 );\n\n}\n\n// https://www.gamedev.net/tutorials/programming/general-and-gameplay-programming/inverse-lerp-a-super-useful-yet-often-overlooked-function-r5230/\nfunction inverseLerp( x, y, value ) {\n\n\tif ( x !== y ) {\n\n\t\treturn ( value - x ) / ( y - x );\n\n\t} else {\n\n\t\treturn 0;\n\n\t}\n\n}\n\n// https://en.wikipedia.org/wiki/Linear_interpolation\nfunction lerp( x, y, t ) {\n\n\treturn ( 1 - t ) * x + t * y;\n\n}\n\n// http://www.rorydriscoll.com/2016/03/07/frame-rate-independent-damping-using-lerp/\nfunction damp( x, y, lambda, dt ) {\n\n\treturn lerp( x, y, 1 - Math.exp( - lambda * dt ) );\n\n}\n\n// https://www.desmos.com/calculator/vcsjnyz7x4\nfunction pingpong( x, length = 1 ) {\n\n\treturn length - Math.abs( euclideanModulo( x, length * 2 ) - length );\n\n}\n\n// http://en.wikipedia.org/wiki/Smoothstep\nfunction smoothstep( x, min, max ) {\n\n\tif ( x <= min ) return 0;\n\tif ( x >= max ) return 1;\n\n\tx = ( x - min ) / ( max - min );\n\n\treturn x * x * ( 3 - 2 * x );\n\n}\n\nfunction smootherstep( x, min, max ) {\n\n\tif ( x <= min ) return 0;\n\tif ( x >= max ) return 1;\n\n\tx = ( x - min ) / ( max - min );\n\n\treturn x * x * x * ( x * ( x * 6 - 15 ) + 10 );\n\n}\n\n// Random integer from interval\nfunction randInt( low, high ) {\n\n\treturn low + Math.floor( Math.random() * ( high - low + 1 ) );\n\n}\n\n// Random float from interval\nfunction randFloat( low, high ) {\n\n\treturn low + Math.random() * ( high - low );\n\n}\n\n// Random float from <-range/2, range/2> interval\nfunction randFloatSpread( range ) {\n\n\treturn range * ( 0.5 - Math.random() );\n\n}\n\n// Deterministic pseudo-random float in the interval [ 0, 1 ]\nfunction seededRandom( s ) {\n\n\tif ( s !== undefined ) _seed = s;\n\n\t// Mulberry32 generator\n\n\tlet t = _seed += 0x6D2B79F5;\n\n\tt = Math.imul( t ^ t >>> 15, t | 1 );\n\n\tt ^= t + Math.imul( t ^ t >>> 7, t | 61 );\n\n\treturn ( ( t ^ t >>> 14 ) >>> 0 ) / 4294967296;\n\n}\n\nfunction degToRad( degrees ) {\n\n\treturn degrees * DEG2RAD;\n\n}\n\nfunction radToDeg( radians ) {\n\n\treturn radians * RAD2DEG;\n\n}\n\nfunction isPowerOfTwo( value ) {\n\n\treturn ( value & ( value - 1 ) ) === 0 && value !== 0;\n\n}\n\nfunction ceilPowerOfTwo( value ) {\n\n\treturn Math.pow( 2, Math.ceil( Math.log( value ) / Math.LN2 ) );\n\n}\n\nfunction floorPowerOfTwo( value ) {\n\n\treturn Math.pow( 2, Math.floor( Math.log( value ) / Math.LN2 ) );\n\n}\n\nfunction setQuaternionFromProperEuler( q, a, b, c, order ) {\n\n\t// Intrinsic Proper Euler Angles - see https://en.wikipedia.org/wiki/Euler_angles\n\n\t// rotations are applied to the axes in the order specified by 'order'\n\t// rotation by angle 'a' is applied first, then by angle 'b', then by angle 'c'\n\t// angles are in radians\n\n\tconst cos = Math.cos;\n\tconst sin = Math.sin;\n\n\tconst c2 = cos( b / 2 );\n\tconst s2 = sin( b / 2 );\n\n\tconst c13 = cos( ( a + c ) / 2 );\n\tconst s13 = sin( ( a + c ) / 2 );\n\n\tconst c1_3 = cos( ( a - c ) / 2 );\n\tconst s1_3 = sin( ( a - c ) / 2 );\n\n\tconst c3_1 = cos( ( c - a ) / 2 );\n\tconst s3_1 = sin( ( c - a ) / 2 );\n\n\tswitch ( order ) {\n\n\t\tcase 'XYX':\n\t\t\tq.set( c2 * s13, s2 * c1_3, s2 * s1_3, c2 * c13 );\n\t\t\tbreak;\n\n\t\tcase 'YZY':\n\t\t\tq.set( s2 * s1_3, c2 * s13, s2 * c1_3, c2 * c13 );\n\t\t\tbreak;\n\n\t\tcase 'ZXZ':\n\t\t\tq.set( s2 * c1_3, s2 * s1_3, c2 * s13, c2 * c13 );\n\t\t\tbreak;\n\n\t\tcase 'XZX':\n\t\t\tq.set( c2 * s13, s2 * s3_1, s2 * c3_1, c2 * c13 );\n\t\t\tbreak;\n\n\t\tcase 'YXY':\n\t\t\tq.set( s2 * c3_1, c2 * s13, s2 * s3_1, c2 * c13 );\n\t\t\tbreak;\n\n\t\tcase 'ZYZ':\n\t\t\tq.set( s2 * s3_1, s2 * c3_1, c2 * s13, c2 * c13 );\n\t\t\tbreak;\n\n\t\tdefault:\n\t\t\tconsole.warn( 'THREE.MathUtils: .setQuaternionFromProperEuler() encountered an unknown order: ' + order );\n\n\t}\n\n}\n\nfunction denormalize( value, array ) {\n\n\tswitch ( array.constructor ) {\n\n\t\tcase Float32Array:\n\n\t\t\treturn value;\n\n\t\tcase Uint32Array:\n\n\t\t\treturn value / 4294967295.0;\n\n\t\tcase Uint16Array:\n\n\t\t\treturn value / 65535.0;\n\n\t\tcase Uint8Array:\n\n\t\t\treturn value / 255.0;\n\n\t\tcase Int32Array:\n\n\t\t\treturn Math.max( value / 2147483647.0, - 1.0 );\n\n\t\tcase Int16Array:\n\n\t\t\treturn Math.max( value / 32767.0, - 1.0 );\n\n\t\tcase Int8Array:\n\n\t\t\treturn Math.max( value / 127.0, - 1.0 );\n\n\t\tdefault:\n\n\t\t\tthrow new Error( 'Invalid component type.' );\n\n\t}\n\n}\n\nfunction normalize( value, array ) {\n\n\tswitch ( array.constructor ) {\n\n\t\tcase Float32Array:\n\n\t\t\treturn value;\n\n\t\tcase Uint32Array:\n\n\t\t\treturn Math.round( value * 4294967295.0 );\n\n\t\tcase Uint16Array:\n\n\t\t\treturn Math.round( value * 65535.0 );\n\n\t\tcase Uint8Array:\n\n\t\t\treturn Math.round( value * 255.0 );\n\n\t\tcase Int32Array:\n\n\t\t\treturn Math.round( value * 2147483647.0 );\n\n\t\tcase Int16Array:\n\n\t\t\treturn Math.round( value * 32767.0 );\n\n\t\tcase Int8Array:\n\n\t\t\treturn Math.round( value * 127.0 );\n\n\t\tdefault:\n\n\t\t\tthrow new Error( 'Invalid component type.' );\n\n\t}\n\n}\n\nconst MathUtils = {\n\tDEG2RAD: DEG2RAD,\n\tRAD2DEG: RAD2DEG,\n\tgenerateUUID: generateUUID,\n\tclamp: clamp,\n\teuclideanModulo: euclideanModulo,\n\tmapLinear: mapLinear,\n\tinverseLerp: inverseLerp,\n\tlerp: lerp,\n\tdamp: damp,\n\tpingpong: pingpong,\n\tsmoothstep: smoothstep,\n\tsmootherstep: smootherstep,\n\trandInt: randInt,\n\trandFloat: randFloat,\n\trandFloatSpread: randFloatSpread,\n\tseededRandom: seededRandom,\n\tdegToRad: degToRad,\n\tradToDeg: radToDeg,\n\tisPowerOfTwo: isPowerOfTwo,\n\tceilPowerOfTwo: ceilPowerOfTwo,\n\tfloorPowerOfTwo: floorPowerOfTwo,\n\tsetQuaternionFromProperEuler: setQuaternionFromProperEuler,\n\tnormalize: normalize,\n\tdenormalize: denormalize\n};\n\nclass Vector2 {\n\n\tconstructor( x = 0, y = 0 ) {\n\n\t\tVector2.prototype.isVector2 = true;\n\n\t\tthis.x = x;\n\t\tthis.y = y;\n\n\t}\n\n\tget width() {\n\n\t\treturn this.x;\n\n\t}\n\n\tset width( value ) {\n\n\t\tthis.x = value;\n\n\t}\n\n\tget height() {\n\n\t\treturn this.y;\n\n\t}\n\n\tset height( value ) {\n\n\t\tthis.y = value;\n\n\t}\n\n\tset( x, y ) {\n\n\t\tthis.x = x;\n\t\tthis.y = y;\n\n\t\treturn this;\n\n\t}\n\n\tsetScalar( scalar ) {\n\n\t\tthis.x = scalar;\n\t\tthis.y = scalar;\n\n\t\treturn this;\n\n\t}\n\n\tsetX( x ) {\n\n\t\tthis.x = x;\n\n\t\treturn this;\n\n\t}\n\n\tsetY( y ) {\n\n\t\tthis.y = y;\n\n\t\treturn this;\n\n\t}\n\n\tsetComponent( index, value ) {\n\n\t\tswitch ( index ) {\n\n\t\t\tcase 0: this.x = value; break;\n\t\t\tcase 1: this.y = value; break;\n\t\t\tdefault: throw new Error( 'index is out of range: ' + index );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tgetComponent( index ) {\n\n\t\tswitch ( index ) {\n\n\t\t\tcase 0: return this.x;\n\t\t\tcase 1: return this.y;\n\t\t\tdefault: throw new Error( 'index is out of range: ' + index );\n\n\t\t}\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor( this.x, this.y );\n\n\t}\n\n\tcopy( v ) {\n\n\t\tthis.x = v.x;\n\t\tthis.y = v.y;\n\n\t\treturn this;\n\n\t}\n\n\tadd( v ) {\n\n\t\tthis.x += v.x;\n\t\tthis.y += v.y;\n\n\t\treturn this;\n\n\t}\n\n\taddScalar( s ) {\n\n\t\tthis.x += s;\n\t\tthis.y += s;\n\n\t\treturn this;\n\n\t}\n\n\taddVectors( a, b ) {\n\n\t\tthis.x = a.x + b.x;\n\t\tthis.y = a.y + b.y;\n\n\t\treturn this;\n\n\t}\n\n\taddScaledVector( v, s ) {\n\n\t\tthis.x += v.x * s;\n\t\tthis.y += v.y * s;\n\n\t\treturn this;\n\n\t}\n\n\tsub( v ) {\n\n\t\tthis.x -= v.x;\n\t\tthis.y -= v.y;\n\n\t\treturn this;\n\n\t}\n\n\tsubScalar( s ) {\n\n\t\tthis.x -= s;\n\t\tthis.y -= s;\n\n\t\treturn this;\n\n\t}\n\n\tsubVectors( a, b ) {\n\n\t\tthis.x = a.x - b.x;\n\t\tthis.y = a.y - b.y;\n\n\t\treturn this;\n\n\t}\n\n\tmultiply( v ) {\n\n\t\tthis.x *= v.x;\n\t\tthis.y *= v.y;\n\n\t\treturn this;\n\n\t}\n\n\tmultiplyScalar( scalar ) {\n\n\t\tthis.x *= scalar;\n\t\tthis.y *= scalar;\n\n\t\treturn this;\n\n\t}\n\n\tdivide( v ) {\n\n\t\tthis.x /= v.x;\n\t\tthis.y /= v.y;\n\n\t\treturn this;\n\n\t}\n\n\tdivideScalar( scalar ) {\n\n\t\treturn this.multiplyScalar( 1 / scalar );\n\n\t}\n\n\tapplyMatrix3( m ) {\n\n\t\tconst x = this.x, y = this.y;\n\t\tconst e = m.elements;\n\n\t\tthis.x = e[ 0 ] * x + e[ 3 ] * y + e[ 6 ];\n\t\tthis.y = e[ 1 ] * x + e[ 4 ] * y + e[ 7 ];\n\n\t\treturn this;\n\n\t}\n\n\tmin( v ) {\n\n\t\tthis.x = Math.min( this.x, v.x );\n\t\tthis.y = Math.min( this.y, v.y );\n\n\t\treturn this;\n\n\t}\n\n\tmax( v ) {\n\n\t\tthis.x = Math.max( this.x, v.x );\n\t\tthis.y = Math.max( this.y, v.y );\n\n\t\treturn this;\n\n\t}\n\n\tclamp( min, max ) {\n\n\t\t// assumes min < max, componentwise\n\n\t\tthis.x = Math.max( min.x, Math.min( max.x, this.x ) );\n\t\tthis.y = Math.max( min.y, Math.min( max.y, this.y ) );\n\n\t\treturn this;\n\n\t}\n\n\tclampScalar( minVal, maxVal ) {\n\n\t\tthis.x = Math.max( minVal, Math.min( maxVal, this.x ) );\n\t\tthis.y = Math.max( minVal, Math.min( maxVal, this.y ) );\n\n\t\treturn this;\n\n\t}\n\n\tclampLength( min, max ) {\n\n\t\tconst length = this.length();\n\n\t\treturn this.divideScalar( length || 1 ).multiplyScalar( Math.max( min, Math.min( max, length ) ) );\n\n\t}\n\n\tfloor() {\n\n\t\tthis.x = Math.floor( this.x );\n\t\tthis.y = Math.floor( this.y );\n\n\t\treturn this;\n\n\t}\n\n\tceil() {\n\n\t\tthis.x = Math.ceil( this.x );\n\t\tthis.y = Math.ceil( this.y );\n\n\t\treturn this;\n\n\t}\n\n\tround() {\n\n\t\tthis.x = Math.round( this.x );\n\t\tthis.y = Math.round( this.y );\n\n\t\treturn this;\n\n\t}\n\n\troundToZero() {\n\n\t\tthis.x = Math.trunc( this.x );\n\t\tthis.y = Math.trunc( this.y );\n\n\t\treturn this;\n\n\t}\n\n\tnegate() {\n\n\t\tthis.x = - this.x;\n\t\tthis.y = - this.y;\n\n\t\treturn this;\n\n\t}\n\n\tdot( v ) {\n\n\t\treturn this.x * v.x + this.y * v.y;\n\n\t}\n\n\tcross( v ) {\n\n\t\treturn this.x * v.y - this.y * v.x;\n\n\t}\n\n\tlengthSq() {\n\n\t\treturn this.x * this.x + this.y * this.y;\n\n\t}\n\n\tlength() {\n\n\t\treturn Math.sqrt( this.x * this.x + this.y * this.y );\n\n\t}\n\n\tmanhattanLength() {\n\n\t\treturn Math.abs( this.x ) + Math.abs( this.y );\n\n\t}\n\n\tnormalize() {\n\n\t\treturn this.divideScalar( this.length() || 1 );\n\n\t}\n\n\tangle() {\n\n\t\t// computes the angle in radians with respect to the positive x-axis\n\n\t\tconst angle = Math.atan2( - this.y, - this.x ) + Math.PI;\n\n\t\treturn angle;\n\n\t}\n\n\tangleTo( v ) {\n\n\t\tconst denominator = Math.sqrt( this.lengthSq() * v.lengthSq() );\n\n\t\tif ( denominator === 0 ) return Math.PI / 2;\n\n\t\tconst theta = this.dot( v ) / denominator;\n\n\t\t// clamp, to handle numerical problems\n\n\t\treturn Math.acos( clamp( theta, - 1, 1 ) );\n\n\t}\n\n\tdistanceTo( v ) {\n\n\t\treturn Math.sqrt( this.distanceToSquared( v ) );\n\n\t}\n\n\tdistanceToSquared( v ) {\n\n\t\tconst dx = this.x - v.x, dy = this.y - v.y;\n\t\treturn dx * dx + dy * dy;\n\n\t}\n\n\tmanhattanDistanceTo( v ) {\n\n\t\treturn Math.abs( this.x - v.x ) + Math.abs( this.y - v.y );\n\n\t}\n\n\tsetLength( length ) {\n\n\t\treturn this.normalize().multiplyScalar( length );\n\n\t}\n\n\tlerp( v, alpha ) {\n\n\t\tthis.x += ( v.x - this.x ) * alpha;\n\t\tthis.y += ( v.y - this.y ) * alpha;\n\n\t\treturn this;\n\n\t}\n\n\tlerpVectors( v1, v2, alpha ) {\n\n\t\tthis.x = v1.x + ( v2.x - v1.x ) * alpha;\n\t\tthis.y = v1.y + ( v2.y - v1.y ) * alpha;\n\n\t\treturn this;\n\n\t}\n\n\tequals( v ) {\n\n\t\treturn ( ( v.x === this.x ) && ( v.y === this.y ) );\n\n\t}\n\n\tfromArray( array, offset = 0 ) {\n\n\t\tthis.x = array[ offset ];\n\t\tthis.y = array[ offset + 1 ];\n\n\t\treturn this;\n\n\t}\n\n\ttoArray( array = [], offset = 0 ) {\n\n\t\tarray[ offset ] = this.x;\n\t\tarray[ offset + 1 ] = this.y;\n\n\t\treturn array;\n\n\t}\n\n\tfromBufferAttribute( attribute, index ) {\n\n\t\tthis.x = attribute.getX( index );\n\t\tthis.y = attribute.getY( index );\n\n\t\treturn this;\n\n\t}\n\n\trotateAround( center, angle ) {\n\n\t\tconst c = Math.cos( angle ), s = Math.sin( angle );\n\n\t\tconst x = this.x - center.x;\n\t\tconst y = this.y - center.y;\n\n\t\tthis.x = x * c - y * s + center.x;\n\t\tthis.y = x * s + y * c + center.y;\n\n\t\treturn this;\n\n\t}\n\n\trandom() {\n\n\t\tthis.x = Math.random();\n\t\tthis.y = Math.random();\n\n\t\treturn this;\n\n\t}\n\n\t*[ Symbol.iterator ]() {\n\n\t\tyield this.x;\n\t\tyield this.y;\n\n\t}\n\n}\n\nclass Matrix3 {\n\n\tconstructor( n11, n12, n13, n21, n22, n23, n31, n32, n33 ) {\n\n\t\tMatrix3.prototype.isMatrix3 = true;\n\n\t\tthis.elements = [\n\n\t\t\t1, 0, 0,\n\t\t\t0, 1, 0,\n\t\t\t0, 0, 1\n\n\t\t];\n\n\t\tif ( n11 !== undefined ) {\n\n\t\t\tthis.set( n11, n12, n13, n21, n22, n23, n31, n32, n33 );\n\n\t\t}\n\n\t}\n\n\tset( n11, n12, n13, n21, n22, n23, n31, n32, n33 ) {\n\n\t\tconst te = this.elements;\n\n\t\tte[ 0 ] = n11; te[ 1 ] = n21; te[ 2 ] = n31;\n\t\tte[ 3 ] = n12; te[ 4 ] = n22; te[ 5 ] = n32;\n\t\tte[ 6 ] = n13; te[ 7 ] = n23; te[ 8 ] = n33;\n\n\t\treturn this;\n\n\t}\n\n\tidentity() {\n\n\t\tthis.set(\n\n\t\t\t1, 0, 0,\n\t\t\t0, 1, 0,\n\t\t\t0, 0, 1\n\n\t\t);\n\n\t\treturn this;\n\n\t}\n\n\tcopy( m ) {\n\n\t\tconst te = this.elements;\n\t\tconst me = m.elements;\n\n\t\tte[ 0 ] = me[ 0 ]; te[ 1 ] = me[ 1 ]; te[ 2 ] = me[ 2 ];\n\t\tte[ 3 ] = me[ 3 ]; te[ 4 ] = me[ 4 ]; te[ 5 ] = me[ 5 ];\n\t\tte[ 6 ] = me[ 6 ]; te[ 7 ] = me[ 7 ]; te[ 8 ] = me[ 8 ];\n\n\t\treturn this;\n\n\t}\n\n\textractBasis( xAxis, yAxis, zAxis ) {\n\n\t\txAxis.setFromMatrix3Column( this, 0 );\n\t\tyAxis.setFromMatrix3Column( this, 1 );\n\t\tzAxis.setFromMatrix3Column( this, 2 );\n\n\t\treturn this;\n\n\t}\n\n\tsetFromMatrix4( m ) {\n\n\t\tconst me = m.elements;\n\n\t\tthis.set(\n\n\t\t\tme[ 0 ], me[ 4 ], me[ 8 ],\n\t\t\tme[ 1 ], me[ 5 ], me[ 9 ],\n\t\t\tme[ 2 ], me[ 6 ], me[ 10 ]\n\n\t\t);\n\n\t\treturn this;\n\n\t}\n\n\tmultiply( m ) {\n\n\t\treturn this.multiplyMatrices( this, m );\n\n\t}\n\n\tpremultiply( m ) {\n\n\t\treturn this.multiplyMatrices( m, this );\n\n\t}\n\n\tmultiplyMatrices( a, b ) {\n\n\t\tconst ae = a.elements;\n\t\tconst be = b.elements;\n\t\tconst te = this.elements;\n\n\t\tconst a11 = ae[ 0 ], a12 = ae[ 3 ], a13 = ae[ 6 ];\n\t\tconst a21 = ae[ 1 ], a22 = ae[ 4 ], a23 = ae[ 7 ];\n\t\tconst a31 = ae[ 2 ], a32 = ae[ 5 ], a33 = ae[ 8 ];\n\n\t\tconst b11 = be[ 0 ], b12 = be[ 3 ], b13 = be[ 6 ];\n\t\tconst b21 = be[ 1 ], b22 = be[ 4 ], b23 = be[ 7 ];\n\t\tconst b31 = be[ 2 ], b32 = be[ 5 ], b33 = be[ 8 ];\n\n\t\tte[ 0 ] = a11 * b11 + a12 * b21 + a13 * b31;\n\t\tte[ 3 ] = a11 * b12 + a12 * b22 + a13 * b32;\n\t\tte[ 6 ] = a11 * b13 + a12 * b23 + a13 * b33;\n\n\t\tte[ 1 ] = a21 * b11 + a22 * b21 + a23 * b31;\n\t\tte[ 4 ] = a21 * b12 + a22 * b22 + a23 * b32;\n\t\tte[ 7 ] = a21 * b13 + a22 * b23 + a23 * b33;\n\n\t\tte[ 2 ] = a31 * b11 + a32 * b21 + a33 * b31;\n\t\tte[ 5 ] = a31 * b12 + a32 * b22 + a33 * b32;\n\t\tte[ 8 ] = a31 * b13 + a32 * b23 + a33 * b33;\n\n\t\treturn this;\n\n\t}\n\n\tmultiplyScalar( s ) {\n\n\t\tconst te = this.elements;\n\n\t\tte[ 0 ] *= s; te[ 3 ] *= s; te[ 6 ] *= s;\n\t\tte[ 1 ] *= s; te[ 4 ] *= s; te[ 7 ] *= s;\n\t\tte[ 2 ] *= s; te[ 5 ] *= s; te[ 8 ] *= s;\n\n\t\treturn this;\n\n\t}\n\n\tdeterminant() {\n\n\t\tconst te = this.elements;\n\n\t\tconst a = te[ 0 ], b = te[ 1 ], c = te[ 2 ],\n\t\t\td = te[ 3 ], e = te[ 4 ], f = te[ 5 ],\n\t\t\tg = te[ 6 ], h = te[ 7 ], i = te[ 8 ];\n\n\t\treturn a * e * i - a * f * h - b * d * i + b * f * g + c * d * h - c * e * g;\n\n\t}\n\n\tinvert() {\n\n\t\tconst te = this.elements,\n\n\t\t\tn11 = te[ 0 ], n21 = te[ 1 ], n31 = te[ 2 ],\n\t\t\tn12 = te[ 3 ], n22 = te[ 4 ], n32 = te[ 5 ],\n\t\t\tn13 = te[ 6 ], n23 = te[ 7 ], n33 = te[ 8 ],\n\n\t\t\tt11 = n33 * n22 - n32 * n23,\n\t\t\tt12 = n32 * n13 - n33 * n12,\n\t\t\tt13 = n23 * n12 - n22 * n13,\n\n\t\t\tdet = n11 * t11 + n21 * t12 + n31 * t13;\n\n\t\tif ( det === 0 ) return this.set( 0, 0, 0, 0, 0, 0, 0, 0, 0 );\n\n\t\tconst detInv = 1 / det;\n\n\t\tte[ 0 ] = t11 * detInv;\n\t\tte[ 1 ] = ( n31 * n23 - n33 * n21 ) * detInv;\n\t\tte[ 2 ] = ( n32 * n21 - n31 * n22 ) * detInv;\n\n\t\tte[ 3 ] = t12 * detInv;\n\t\tte[ 4 ] = ( n33 * n11 - n31 * n13 ) * detInv;\n\t\tte[ 5 ] = ( n31 * n12 - n32 * n11 ) * detInv;\n\n\t\tte[ 6 ] = t13 * detInv;\n\t\tte[ 7 ] = ( n21 * n13 - n23 * n11 ) * detInv;\n\t\tte[ 8 ] = ( n22 * n11 - n21 * n12 ) * detInv;\n\n\t\treturn this;\n\n\t}\n\n\ttranspose() {\n\n\t\tlet tmp;\n\t\tconst m = this.elements;\n\n\t\ttmp = m[ 1 ]; m[ 1 ] = m[ 3 ]; m[ 3 ] = tmp;\n\t\ttmp = m[ 2 ]; m[ 2 ] = m[ 6 ]; m[ 6 ] = tmp;\n\t\ttmp = m[ 5 ]; m[ 5 ] = m[ 7 ]; m[ 7 ] = tmp;\n\n\t\treturn this;\n\n\t}\n\n\tgetNormalMatrix( matrix4 ) {\n\n\t\treturn this.setFromMatrix4( matrix4 ).invert().transpose();\n\n\t}\n\n\ttransposeIntoArray( r ) {\n\n\t\tconst m = this.elements;\n\n\t\tr[ 0 ] = m[ 0 ];\n\t\tr[ 1 ] = m[ 3 ];\n\t\tr[ 2 ] = m[ 6 ];\n\t\tr[ 3 ] = m[ 1 ];\n\t\tr[ 4 ] = m[ 4 ];\n\t\tr[ 5 ] = m[ 7 ];\n\t\tr[ 6 ] = m[ 2 ];\n\t\tr[ 7 ] = m[ 5 ];\n\t\tr[ 8 ] = m[ 8 ];\n\n\t\treturn this;\n\n\t}\n\n\tsetUvTransform( tx, ty, sx, sy, rotation, cx, cy ) {\n\n\t\tconst c = Math.cos( rotation );\n\t\tconst s = Math.sin( rotation );\n\n\t\tthis.set(\n\t\t\tsx * c, sx * s, - sx * ( c * cx + s * cy ) + cx + tx,\n\t\t\t- sy * s, sy * c, - sy * ( - s * cx + c * cy ) + cy + ty,\n\t\t\t0, 0, 1\n\t\t);\n\n\t\treturn this;\n\n\t}\n\n\t//\n\n\tscale( sx, sy ) {\n\n\t\tthis.premultiply( _m3.makeScale( sx, sy ) );\n\n\t\treturn this;\n\n\t}\n\n\trotate( theta ) {\n\n\t\tthis.premultiply( _m3.makeRotation( - theta ) );\n\n\t\treturn this;\n\n\t}\n\n\ttranslate( tx, ty ) {\n\n\t\tthis.premultiply( _m3.makeTranslation( tx, ty ) );\n\n\t\treturn this;\n\n\t}\n\n\t// for 2D Transforms\n\n\tmakeTranslation( x, y ) {\n\n\t\tif ( x.isVector2 ) {\n\n\t\t\tthis.set(\n\n\t\t\t\t1, 0, x.x,\n\t\t\t\t0, 1, x.y,\n\t\t\t\t0, 0, 1\n\n\t\t\t);\n\n\t\t} else {\n\n\t\t\tthis.set(\n\n\t\t\t\t1, 0, x,\n\t\t\t\t0, 1, y,\n\t\t\t\t0, 0, 1\n\n\t\t\t);\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tmakeRotation( theta ) {\n\n\t\t// counterclockwise\n\n\t\tconst c = Math.cos( theta );\n\t\tconst s = Math.sin( theta );\n\n\t\tthis.set(\n\n\t\t\tc, - s, 0,\n\t\t\ts, c, 0,\n\t\t\t0, 0, 1\n\n\t\t);\n\n\t\treturn this;\n\n\t}\n\n\tmakeScale( x, y ) {\n\n\t\tthis.set(\n\n\t\t\tx, 0, 0,\n\t\t\t0, y, 0,\n\t\t\t0, 0, 1\n\n\t\t);\n\n\t\treturn this;\n\n\t}\n\n\t//\n\n\tequals( matrix ) {\n\n\t\tconst te = this.elements;\n\t\tconst me = matrix.elements;\n\n\t\tfor ( let i = 0; i < 9; i ++ ) {\n\n\t\t\tif ( te[ i ] !== me[ i ] ) return false;\n\n\t\t}\n\n\t\treturn true;\n\n\t}\n\n\tfromArray( array, offset = 0 ) {\n\n\t\tfor ( let i = 0; i < 9; i ++ ) {\n\n\t\t\tthis.elements[ i ] = array[ i + offset ];\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\ttoArray( array = [], offset = 0 ) {\n\n\t\tconst te = this.elements;\n\n\t\tarray[ offset ] = te[ 0 ];\n\t\tarray[ offset + 1 ] = te[ 1 ];\n\t\tarray[ offset + 2 ] = te[ 2 ];\n\n\t\tarray[ offset + 3 ] = te[ 3 ];\n\t\tarray[ offset + 4 ] = te[ 4 ];\n\t\tarray[ offset + 5 ] = te[ 5 ];\n\n\t\tarray[ offset + 6 ] = te[ 6 ];\n\t\tarray[ offset + 7 ] = te[ 7 ];\n\t\tarray[ offset + 8 ] = te[ 8 ];\n\n\t\treturn array;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().fromArray( this.elements );\n\n\t}\n\n}\n\nconst _m3 = /*@__PURE__*/ new Matrix3();\n\nfunction arrayNeedsUint32( array ) {\n\n\t// assumes larger values usually on last\n\n\tfor ( let i = array.length - 1; i >= 0; -- i ) {\n\n\t\tif ( array[ i ] >= 65535 ) return true; // account for PRIMITIVE_RESTART_FIXED_INDEX, #24565\n\n\t}\n\n\treturn false;\n\n}\n\nconst TYPED_ARRAYS = {\n\tInt8Array: Int8Array,\n\tUint8Array: Uint8Array,\n\tUint8ClampedArray: Uint8ClampedArray,\n\tInt16Array: Int16Array,\n\tUint16Array: Uint16Array,\n\tInt32Array: Int32Array,\n\tUint32Array: Uint32Array,\n\tFloat32Array: Float32Array,\n\tFloat64Array: Float64Array\n};\n\nfunction getTypedArray( type, buffer ) {\n\n\treturn new TYPED_ARRAYS[ type ]( buffer );\n\n}\n\nfunction createElementNS( name ) {\n\n\treturn document.createElementNS( 'http://www.w3.org/1999/xhtml', name );\n\n}\n\nfunction createCanvasElement() {\n\n\tconst canvas = createElementNS( 'canvas' );\n\tcanvas.style.display = 'block';\n\treturn canvas;\n\n}\n\nconst _cache = {};\n\nfunction warnOnce( message ) {\n\n\tif ( message in _cache ) return;\n\n\t_cache[ message ] = true;\n\n\tconsole.warn( message );\n\n}\n\nfunction probeAsync( gl, sync, interval ) {\n\n\treturn new Promise( function ( resolve, reject ) {\n\n\t\tfunction probe() {\n\n\t\t\tswitch ( gl.clientWaitSync( sync, gl.SYNC_FLUSH_COMMANDS_BIT, 0 ) ) {\n\n\t\t\t\tcase gl.WAIT_FAILED:\n\t\t\t\t\treject();\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase gl.TIMEOUT_EXPIRED:\n\t\t\t\t\tsetTimeout( probe, interval );\n\t\t\t\t\tbreak;\n\n\t\t\t\tdefault:\n\t\t\t\t\tresolve();\n\n\t\t\t}\n\n\t\t}\n\n\t\tsetTimeout( probe, interval );\n\n\t} );\n\n}\n\n/**\n * Matrices converting P3 <-> Rec. 709 primaries, without gamut mapping\n * or clipping. Based on W3C specifications for sRGB and Display P3,\n * and ICC specifications for the D50 connection space. Values in/out\n * are _linear_ sRGB and _linear_ Display P3.\n *\n * Note that both sRGB and Display P3 use the sRGB transfer functions.\n *\n * Reference:\n * - http://www.russellcottrell.com/photo/matrixCalculator.htm\n */\n\nconst LINEAR_SRGB_TO_LINEAR_DISPLAY_P3 = /*@__PURE__*/ new Matrix3().set(\n\t0.8224621, 0.177538, 0.0,\n\t0.0331941, 0.9668058, 0.0,\n\t0.0170827, 0.0723974, 0.9105199,\n);\n\nconst LINEAR_DISPLAY_P3_TO_LINEAR_SRGB = /*@__PURE__*/ new Matrix3().set(\n\t1.2249401, - 0.2249404, 0.0,\n\t- 0.0420569, 1.0420571, 0.0,\n\t- 0.0196376, - 0.0786361, 1.0982735\n);\n\n/**\n * Defines supported color spaces by transfer function and primaries,\n * and provides conversions to/from the Linear-sRGB reference space.\n */\nconst COLOR_SPACES = {\n\t[ LinearSRGBColorSpace ]: {\n\t\ttransfer: LinearTransfer,\n\t\tprimaries: Rec709Primaries,\n\t\ttoReference: ( color ) => color,\n\t\tfromReference: ( color ) => color,\n\t},\n\t[ SRGBColorSpace ]: {\n\t\ttransfer: SRGBTransfer,\n\t\tprimaries: Rec709Primaries,\n\t\ttoReference: ( color ) => color.convertSRGBToLinear(),\n\t\tfromReference: ( color ) => color.convertLinearToSRGB(),\n\t},\n\t[ LinearDisplayP3ColorSpace ]: {\n\t\ttransfer: LinearTransfer,\n\t\tprimaries: P3Primaries,\n\t\ttoReference: ( color ) => color.applyMatrix3( LINEAR_DISPLAY_P3_TO_LINEAR_SRGB ),\n\t\tfromReference: ( color ) => color.applyMatrix3( LINEAR_SRGB_TO_LINEAR_DISPLAY_P3 ),\n\t},\n\t[ DisplayP3ColorSpace ]: {\n\t\ttransfer: SRGBTransfer,\n\t\tprimaries: P3Primaries,\n\t\ttoReference: ( color ) => color.convertSRGBToLinear().applyMatrix3( LINEAR_DISPLAY_P3_TO_LINEAR_SRGB ),\n\t\tfromReference: ( color ) => color.applyMatrix3( LINEAR_SRGB_TO_LINEAR_DISPLAY_P3 ).convertLinearToSRGB(),\n\t},\n};\n\nconst SUPPORTED_WORKING_COLOR_SPACES = new Set( [ LinearSRGBColorSpace, LinearDisplayP3ColorSpace ] );\n\nconst ColorManagement = {\n\n\tenabled: true,\n\n\t_workingColorSpace: LinearSRGBColorSpace,\n\n\tget workingColorSpace() {\n\n\t\treturn this._workingColorSpace;\n\n\t},\n\n\tset workingColorSpace( colorSpace ) {\n\n\t\tif ( ! SUPPORTED_WORKING_COLOR_SPACES.has( colorSpace ) ) {\n\n\t\t\tthrow new Error( `Unsupported working color space, \"${ colorSpace }\".` );\n\n\t\t}\n\n\t\tthis._workingColorSpace = colorSpace;\n\n\t},\n\n\tconvert: function ( color, sourceColorSpace, targetColorSpace ) {\n\n\t\tif ( this.enabled === false || sourceColorSpace === targetColorSpace || ! sourceColorSpace || ! targetColorSpace ) {\n\n\t\t\treturn color;\n\n\t\t}\n\n\t\tconst sourceToReference = COLOR_SPACES[ sourceColorSpace ].toReference;\n\t\tconst targetFromReference = COLOR_SPACES[ targetColorSpace ].fromReference;\n\n\t\treturn targetFromReference( sourceToReference( color ) );\n\n\t},\n\n\tfromWorkingColorSpace: function ( color, targetColorSpace ) {\n\n\t\treturn this.convert( color, this._workingColorSpace, targetColorSpace );\n\n\t},\n\n\ttoWorkingColorSpace: function ( color, sourceColorSpace ) {\n\n\t\treturn this.convert( color, sourceColorSpace, this._workingColorSpace );\n\n\t},\n\n\tgetPrimaries: function ( colorSpace ) {\n\n\t\treturn COLOR_SPACES[ colorSpace ].primaries;\n\n\t},\n\n\tgetTransfer: function ( colorSpace ) {\n\n\t\tif ( colorSpace === NoColorSpace ) return LinearTransfer;\n\n\t\treturn COLOR_SPACES[ colorSpace ].transfer;\n\n\t},\n\n};\n\n\nfunction SRGBToLinear( c ) {\n\n\treturn ( c < 0.04045 ) ? c * 0.0773993808 : Math.pow( c * 0.9478672986 + 0.0521327014, 2.4 );\n\n}\n\nfunction LinearToSRGB( c ) {\n\n\treturn ( c < 0.0031308 ) ? c * 12.92 : 1.055 * ( Math.pow( c, 0.41666 ) ) - 0.055;\n\n}\n\nlet _canvas;\n\nclass ImageUtils {\n\n\tstatic getDataURL( image ) {\n\n\t\tif ( /^data:/i.test( image.src ) ) {\n\n\t\t\treturn image.src;\n\n\t\t}\n\n\t\tif ( typeof HTMLCanvasElement === 'undefined' ) {\n\n\t\t\treturn image.src;\n\n\t\t}\n\n\t\tlet canvas;\n\n\t\tif ( image instanceof HTMLCanvasElement ) {\n\n\t\t\tcanvas = image;\n\n\t\t} else {\n\n\t\t\tif ( _canvas === undefined ) _canvas = createElementNS( 'canvas' );\n\n\t\t\t_canvas.width = image.width;\n\t\t\t_canvas.height = image.height;\n\n\t\t\tconst context = _canvas.getContext( '2d' );\n\n\t\t\tif ( image instanceof ImageData ) {\n\n\t\t\t\tcontext.putImageData( image, 0, 0 );\n\n\t\t\t} else {\n\n\t\t\t\tcontext.drawImage( image, 0, 0, image.width, image.height );\n\n\t\t\t}\n\n\t\t\tcanvas = _canvas;\n\n\t\t}\n\n\t\tif ( canvas.width > 2048 || canvas.height > 2048 ) {\n\n\t\t\tconsole.warn( 'THREE.ImageUtils.getDataURL: Image converted to jpg for performance reasons', image );\n\n\t\t\treturn canvas.toDataURL( 'image/jpeg', 0.6 );\n\n\t\t} else {\n\n\t\t\treturn canvas.toDataURL( 'image/png' );\n\n\t\t}\n\n\t}\n\n\tstatic sRGBToLinear( image ) {\n\n\t\tif ( ( typeof HTMLImageElement !== 'undefined' && image instanceof HTMLImageElement ) ||\n\t\t\t( typeof HTMLCanvasElement !== 'undefined' && image instanceof HTMLCanvasElement ) ||\n\t\t\t( typeof ImageBitmap !== 'undefined' && image instanceof ImageBitmap ) ) {\n\n\t\t\tconst canvas = createElementNS( 'canvas' );\n\n\t\t\tcanvas.width = image.width;\n\t\t\tcanvas.height = image.height;\n\n\t\t\tconst context = canvas.getContext( '2d' );\n\t\t\tcontext.drawImage( image, 0, 0, image.width, image.height );\n\n\t\t\tconst imageData = context.getImageData( 0, 0, image.width, image.height );\n\t\t\tconst data = imageData.data;\n\n\t\t\tfor ( let i = 0; i < data.length; i ++ ) {\n\n\t\t\t\tdata[ i ] = SRGBToLinear( data[ i ] / 255 ) * 255;\n\n\t\t\t}\n\n\t\t\tcontext.putImageData( imageData, 0, 0 );\n\n\t\t\treturn canvas;\n\n\t\t} else if ( image.data ) {\n\n\t\t\tconst data = image.data.slice( 0 );\n\n\t\t\tfor ( let i = 0; i < data.length; i ++ ) {\n\n\t\t\t\tif ( data instanceof Uint8Array || data instanceof Uint8ClampedArray ) {\n\n\t\t\t\t\tdata[ i ] = Math.floor( SRGBToLinear( data[ i ] / 255 ) * 255 );\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// assuming float\n\n\t\t\t\t\tdata[ i ] = SRGBToLinear( data[ i ] );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\treturn {\n\t\t\t\tdata: data,\n\t\t\t\twidth: image.width,\n\t\t\t\theight: image.height\n\t\t\t};\n\n\t\t} else {\n\n\t\t\tconsole.warn( 'THREE.ImageUtils.sRGBToLinear(): Unsupported image type. No color space conversion applied.' );\n\t\t\treturn image;\n\n\t\t}\n\n\t}\n\n}\n\nlet _sourceId = 0;\n\nclass Source {\n\n\tconstructor( data = null ) {\n\n\t\tthis.isSource = true;\n\n\t\tObject.defineProperty( this, 'id', { value: _sourceId ++ } );\n\n\t\tthis.uuid = generateUUID();\n\n\t\tthis.data = data;\n\t\tthis.dataReady = true;\n\n\t\tthis.version = 0;\n\n\t}\n\n\tset needsUpdate( value ) {\n\n\t\tif ( value === true ) this.version ++;\n\n\t}\n\n\ttoJSON( meta ) {\n\n\t\tconst isRootObject = ( meta === undefined || typeof meta === 'string' );\n\n\t\tif ( ! isRootObject && meta.images[ this.uuid ] !== undefined ) {\n\n\t\t\treturn meta.images[ this.uuid ];\n\n\t\t}\n\n\t\tconst output = {\n\t\t\tuuid: this.uuid,\n\t\t\turl: ''\n\t\t};\n\n\t\tconst data = this.data;\n\n\t\tif ( data !== null ) {\n\n\t\t\tlet url;\n\n\t\t\tif ( Array.isArray( data ) ) {\n\n\t\t\t\t// cube texture\n\n\t\t\t\turl = [];\n\n\t\t\t\tfor ( let i = 0, l = data.length; i < l; i ++ ) {\n\n\t\t\t\t\tif ( data[ i ].isDataTexture ) {\n\n\t\t\t\t\t\turl.push( serializeImage( data[ i ].image ) );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\turl.push( serializeImage( data[ i ] ) );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\t// texture\n\n\t\t\t\turl = serializeImage( data );\n\n\t\t\t}\n\n\t\t\toutput.url = url;\n\n\t\t}\n\n\t\tif ( ! isRootObject ) {\n\n\t\t\tmeta.images[ this.uuid ] = output;\n\n\t\t}\n\n\t\treturn output;\n\n\t}\n\n}\n\nfunction serializeImage( image ) {\n\n\tif ( ( typeof HTMLImageElement !== 'undefined' && image instanceof HTMLImageElement ) ||\n\t\t( typeof HTMLCanvasElement !== 'undefined' && image instanceof HTMLCanvasElement ) ||\n\t\t( typeof ImageBitmap !== 'undefined' && image instanceof ImageBitmap ) ) {\n\n\t\t// default images\n\n\t\treturn ImageUtils.getDataURL( image );\n\n\t} else {\n\n\t\tif ( image.data ) {\n\n\t\t\t// images of DataTexture\n\n\t\t\treturn {\n\t\t\t\tdata: Array.from( image.data ),\n\t\t\t\twidth: image.width,\n\t\t\t\theight: image.height,\n\t\t\t\ttype: image.data.constructor.name\n\t\t\t};\n\n\t\t} else {\n\n\t\t\tconsole.warn( 'THREE.Texture: Unable to serialize Texture.' );\n\t\t\treturn {};\n\n\t\t}\n\n\t}\n\n}\n\nlet _textureId = 0;\n\nclass Texture extends EventDispatcher {\n\n\tconstructor( image = Texture.DEFAULT_IMAGE, mapping = Texture.DEFAULT_MAPPING, wrapS = ClampToEdgeWrapping, wrapT = ClampToEdgeWrapping, magFilter = LinearFilter, minFilter = LinearMipmapLinearFilter, format = RGBAFormat, type = UnsignedByteType, anisotropy = Texture.DEFAULT_ANISOTROPY, colorSpace = NoColorSpace ) {\n\n\t\tsuper();\n\n\t\tthis.isTexture = true;\n\n\t\tObject.defineProperty( this, 'id', { value: _textureId ++ } );\n\n\t\tthis.uuid = generateUUID();\n\n\t\tthis.name = '';\n\n\t\tthis.source = new Source( image );\n\t\tthis.mipmaps = [];\n\n\t\tthis.mapping = mapping;\n\t\tthis.channel = 0;\n\n\t\tthis.wrapS = wrapS;\n\t\tthis.wrapT = wrapT;\n\n\t\tthis.magFilter = magFilter;\n\t\tthis.minFilter = minFilter;\n\n\t\tthis.anisotropy = anisotropy;\n\n\t\tthis.format = format;\n\t\tthis.internalFormat = null;\n\t\tthis.type = type;\n\n\t\tthis.offset = new Vector2( 0, 0 );\n\t\tthis.repeat = new Vector2( 1, 1 );\n\t\tthis.center = new Vector2( 0, 0 );\n\t\tthis.rotation = 0;\n\n\t\tthis.matrixAutoUpdate = true;\n\t\tthis.matrix = new Matrix3();\n\n\t\tthis.generateMipmaps = true;\n\t\tthis.premultiplyAlpha = false;\n\t\tthis.flipY = true;\n\t\tthis.unpackAlignment = 4;\t// valid values: 1, 2, 4, 8 (see http://www.khronos.org/opengles/sdk/docs/man/xhtml/glPixelStorei.xml)\n\n\t\tthis.colorSpace = colorSpace;\n\n\t\tthis.userData = {};\n\n\t\tthis.version = 0;\n\t\tthis.onUpdate = null;\n\n\t\tthis.isRenderTargetTexture = false; // indicates whether a texture belongs to a render target or not\n\t\tthis.pmremVersion = 0; // indicates whether this texture should be processed by PMREMGenerator or not (only relevant for render target textures)\n\n\t}\n\n\tget image() {\n\n\t\treturn this.source.data;\n\n\t}\n\n\tset image( value = null ) {\n\n\t\tthis.source.data = value;\n\n\t}\n\n\tupdateMatrix() {\n\n\t\tthis.matrix.setUvTransform( this.offset.x, this.offset.y, this.repeat.x, this.repeat.y, this.rotation, this.center.x, this.center.y );\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n\tcopy( source ) {\n\n\t\tthis.name = source.name;\n\n\t\tthis.source = source.source;\n\t\tthis.mipmaps = source.mipmaps.slice( 0 );\n\n\t\tthis.mapping = source.mapping;\n\t\tthis.channel = source.channel;\n\n\t\tthis.wrapS = source.wrapS;\n\t\tthis.wrapT = source.wrapT;\n\n\t\tthis.magFilter = source.magFilter;\n\t\tthis.minFilter = source.minFilter;\n\n\t\tthis.anisotropy = source.anisotropy;\n\n\t\tthis.format = source.format;\n\t\tthis.internalFormat = source.internalFormat;\n\t\tthis.type = source.type;\n\n\t\tthis.offset.copy( source.offset );\n\t\tthis.repeat.copy( source.repeat );\n\t\tthis.center.copy( source.center );\n\t\tthis.rotation = source.rotation;\n\n\t\tthis.matrixAutoUpdate = source.matrixAutoUpdate;\n\t\tthis.matrix.copy( source.matrix );\n\n\t\tthis.generateMipmaps = source.generateMipmaps;\n\t\tthis.premultiplyAlpha = source.premultiplyAlpha;\n\t\tthis.flipY = source.flipY;\n\t\tthis.unpackAlignment = source.unpackAlignment;\n\t\tthis.colorSpace = source.colorSpace;\n\n\t\tthis.userData = JSON.parse( JSON.stringify( source.userData ) );\n\n\t\tthis.needsUpdate = true;\n\n\t\treturn this;\n\n\t}\n\n\ttoJSON( meta ) {\n\n\t\tconst isRootObject = ( meta === undefined || typeof meta === 'string' );\n\n\t\tif ( ! isRootObject && meta.textures[ this.uuid ] !== undefined ) {\n\n\t\t\treturn meta.textures[ this.uuid ];\n\n\t\t}\n\n\t\tconst output = {\n\n\t\t\tmetadata: {\n\t\t\t\tversion: 4.6,\n\t\t\t\ttype: 'Texture',\n\t\t\t\tgenerator: 'Texture.toJSON'\n\t\t\t},\n\n\t\t\tuuid: this.uuid,\n\t\t\tname: this.name,\n\n\t\t\timage: this.source.toJSON( meta ).uuid,\n\n\t\t\tmapping: this.mapping,\n\t\t\tchannel: this.channel,\n\n\t\t\trepeat: [ this.repeat.x, this.repeat.y ],\n\t\t\toffset: [ this.offset.x, this.offset.y ],\n\t\t\tcenter: [ this.center.x, this.center.y ],\n\t\t\trotation: this.rotation,\n\n\t\t\twrap: [ this.wrapS, this.wrapT ],\n\n\t\t\tformat: this.format,\n\t\t\tinternalFormat: this.internalFormat,\n\t\t\ttype: this.type,\n\t\t\tcolorSpace: this.colorSpace,\n\n\t\t\tminFilter: this.minFilter,\n\t\t\tmagFilter: this.magFilter,\n\t\t\tanisotropy: this.anisotropy,\n\n\t\t\tflipY: this.flipY,\n\n\t\t\tgenerateMipmaps: this.generateMipmaps,\n\t\t\tpremultiplyAlpha: this.premultiplyAlpha,\n\t\t\tunpackAlignment: this.unpackAlignment\n\n\t\t};\n\n\t\tif ( Object.keys( this.userData ).length > 0 ) output.userData = this.userData;\n\n\t\tif ( ! isRootObject ) {\n\n\t\t\tmeta.textures[ this.uuid ] = output;\n\n\t\t}\n\n\t\treturn output;\n\n\t}\n\n\tdispose() {\n\n\t\tthis.dispatchEvent( { type: 'dispose' } );\n\n\t}\n\n\ttransformUv( uv ) {\n\n\t\tif ( this.mapping !== UVMapping ) return uv;\n\n\t\tuv.applyMatrix3( this.matrix );\n\n\t\tif ( uv.x < 0 || uv.x > 1 ) {\n\n\t\t\tswitch ( this.wrapS ) {\n\n\t\t\t\tcase RepeatWrapping:\n\n\t\t\t\t\tuv.x = uv.x - Math.floor( uv.x );\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase ClampToEdgeWrapping:\n\n\t\t\t\t\tuv.x = uv.x < 0 ? 0 : 1;\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase MirroredRepeatWrapping:\n\n\t\t\t\t\tif ( Math.abs( Math.floor( uv.x ) % 2 ) === 1 ) {\n\n\t\t\t\t\t\tuv.x = Math.ceil( uv.x ) - uv.x;\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tuv.x = uv.x - Math.floor( uv.x );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tbreak;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( uv.y < 0 || uv.y > 1 ) {\n\n\t\t\tswitch ( this.wrapT ) {\n\n\t\t\t\tcase RepeatWrapping:\n\n\t\t\t\t\tuv.y = uv.y - Math.floor( uv.y );\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase ClampToEdgeWrapping:\n\n\t\t\t\t\tuv.y = uv.y < 0 ? 0 : 1;\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase MirroredRepeatWrapping:\n\n\t\t\t\t\tif ( Math.abs( Math.floor( uv.y ) % 2 ) === 1 ) {\n\n\t\t\t\t\t\tuv.y = Math.ceil( uv.y ) - uv.y;\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tuv.y = uv.y - Math.floor( uv.y );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tbreak;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( this.flipY ) {\n\n\t\t\tuv.y = 1 - uv.y;\n\n\t\t}\n\n\t\treturn uv;\n\n\t}\n\n\tset needsUpdate( value ) {\n\n\t\tif ( value === true ) {\n\n\t\t\tthis.version ++;\n\t\t\tthis.source.needsUpdate = true;\n\n\t\t}\n\n\t}\n\n\tset needsPMREMUpdate( value ) {\n\n\t\tif ( value === true ) {\n\n\t\t\tthis.pmremVersion ++;\n\n\t\t}\n\n\t}\n\n}\n\nTexture.DEFAULT_IMAGE = null;\nTexture.DEFAULT_MAPPING = UVMapping;\nTexture.DEFAULT_ANISOTROPY = 1;\n\nclass Vector4 {\n\n\tconstructor( x = 0, y = 0, z = 0, w = 1 ) {\n\n\t\tVector4.prototype.isVector4 = true;\n\n\t\tthis.x = x;\n\t\tthis.y = y;\n\t\tthis.z = z;\n\t\tthis.w = w;\n\n\t}\n\n\tget width() {\n\n\t\treturn this.z;\n\n\t}\n\n\tset width( value ) {\n\n\t\tthis.z = value;\n\n\t}\n\n\tget height() {\n\n\t\treturn this.w;\n\n\t}\n\n\tset height( value ) {\n\n\t\tthis.w = value;\n\n\t}\n\n\tset( x, y, z, w ) {\n\n\t\tthis.x = x;\n\t\tthis.y = y;\n\t\tthis.z = z;\n\t\tthis.w = w;\n\n\t\treturn this;\n\n\t}\n\n\tsetScalar( scalar ) {\n\n\t\tthis.x = scalar;\n\t\tthis.y = scalar;\n\t\tthis.z = scalar;\n\t\tthis.w = scalar;\n\n\t\treturn this;\n\n\t}\n\n\tsetX( x ) {\n\n\t\tthis.x = x;\n\n\t\treturn this;\n\n\t}\n\n\tsetY( y ) {\n\n\t\tthis.y = y;\n\n\t\treturn this;\n\n\t}\n\n\tsetZ( z ) {\n\n\t\tthis.z = z;\n\n\t\treturn this;\n\n\t}\n\n\tsetW( w ) {\n\n\t\tthis.w = w;\n\n\t\treturn this;\n\n\t}\n\n\tsetComponent( index, value ) {\n\n\t\tswitch ( index ) {\n\n\t\t\tcase 0: this.x = value; break;\n\t\t\tcase 1: this.y = value; break;\n\t\t\tcase 2: this.z = value; break;\n\t\t\tcase 3: this.w = value; break;\n\t\t\tdefault: throw new Error( 'index is out of range: ' + index );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tgetComponent( index ) {\n\n\t\tswitch ( index ) {\n\n\t\t\tcase 0: return this.x;\n\t\t\tcase 1: return this.y;\n\t\t\tcase 2: return this.z;\n\t\t\tcase 3: return this.w;\n\t\t\tdefault: throw new Error( 'index is out of range: ' + index );\n\n\t\t}\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor( this.x, this.y, this.z, this.w );\n\n\t}\n\n\tcopy( v ) {\n\n\t\tthis.x = v.x;\n\t\tthis.y = v.y;\n\t\tthis.z = v.z;\n\t\tthis.w = ( v.w !== undefined ) ? v.w : 1;\n\n\t\treturn this;\n\n\t}\n\n\tadd( v ) {\n\n\t\tthis.x += v.x;\n\t\tthis.y += v.y;\n\t\tthis.z += v.z;\n\t\tthis.w += v.w;\n\n\t\treturn this;\n\n\t}\n\n\taddScalar( s ) {\n\n\t\tthis.x += s;\n\t\tthis.y += s;\n\t\tthis.z += s;\n\t\tthis.w += s;\n\n\t\treturn this;\n\n\t}\n\n\taddVectors( a, b ) {\n\n\t\tthis.x = a.x + b.x;\n\t\tthis.y = a.y + b.y;\n\t\tthis.z = a.z + b.z;\n\t\tthis.w = a.w + b.w;\n\n\t\treturn this;\n\n\t}\n\n\taddScaledVector( v, s ) {\n\n\t\tthis.x += v.x * s;\n\t\tthis.y += v.y * s;\n\t\tthis.z += v.z * s;\n\t\tthis.w += v.w * s;\n\n\t\treturn this;\n\n\t}\n\n\tsub( v ) {\n\n\t\tthis.x -= v.x;\n\t\tthis.y -= v.y;\n\t\tthis.z -= v.z;\n\t\tthis.w -= v.w;\n\n\t\treturn this;\n\n\t}\n\n\tsubScalar( s ) {\n\n\t\tthis.x -= s;\n\t\tthis.y -= s;\n\t\tthis.z -= s;\n\t\tthis.w -= s;\n\n\t\treturn this;\n\n\t}\n\n\tsubVectors( a, b ) {\n\n\t\tthis.x = a.x - b.x;\n\t\tthis.y = a.y - b.y;\n\t\tthis.z = a.z - b.z;\n\t\tthis.w = a.w - b.w;\n\n\t\treturn this;\n\n\t}\n\n\tmultiply( v ) {\n\n\t\tthis.x *= v.x;\n\t\tthis.y *= v.y;\n\t\tthis.z *= v.z;\n\t\tthis.w *= v.w;\n\n\t\treturn this;\n\n\t}\n\n\tmultiplyScalar( scalar ) {\n\n\t\tthis.x *= scalar;\n\t\tthis.y *= scalar;\n\t\tthis.z *= scalar;\n\t\tthis.w *= scalar;\n\n\t\treturn this;\n\n\t}\n\n\tapplyMatrix4( m ) {\n\n\t\tconst x = this.x, y = this.y, z = this.z, w = this.w;\n\t\tconst e = m.elements;\n\n\t\tthis.x = e[ 0 ] * x + e[ 4 ] * y + e[ 8 ] * z + e[ 12 ] * w;\n\t\tthis.y = e[ 1 ] * x + e[ 5 ] * y + e[ 9 ] * z + e[ 13 ] * w;\n\t\tthis.z = e[ 2 ] * x + e[ 6 ] * y + e[ 10 ] * z + e[ 14 ] * w;\n\t\tthis.w = e[ 3 ] * x + e[ 7 ] * y + e[ 11 ] * z + e[ 15 ] * w;\n\n\t\treturn this;\n\n\t}\n\n\tdivideScalar( scalar ) {\n\n\t\treturn this.multiplyScalar( 1 / scalar );\n\n\t}\n\n\tsetAxisAngleFromQuaternion( q ) {\n\n\t\t// http://www.euclideanspace.com/maths/geometry/rotations/conversions/quaternionToAngle/index.htm\n\n\t\t// q is assumed to be normalized\n\n\t\tthis.w = 2 * Math.acos( q.w );\n\n\t\tconst s = Math.sqrt( 1 - q.w * q.w );\n\n\t\tif ( s < 0.0001 ) {\n\n\t\t\tthis.x = 1;\n\t\t\tthis.y = 0;\n\t\t\tthis.z = 0;\n\n\t\t} else {\n\n\t\t\tthis.x = q.x / s;\n\t\t\tthis.y = q.y / s;\n\t\t\tthis.z = q.z / s;\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tsetAxisAngleFromRotationMatrix( m ) {\n\n\t\t// http://www.euclideanspace.com/maths/geometry/rotations/conversions/matrixToAngle/index.htm\n\n\t\t// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)\n\n\t\tlet angle, x, y, z; // variables for result\n\t\tconst epsilon = 0.01,\t\t// margin to allow for rounding errors\n\t\t\tepsilon2 = 0.1,\t\t// margin to distinguish between 0 and 180 degrees\n\n\t\t\tte = m.elements,\n\n\t\t\tm11 = te[ 0 ], m12 = te[ 4 ], m13 = te[ 8 ],\n\t\t\tm21 = te[ 1 ], m22 = te[ 5 ], m23 = te[ 9 ],\n\t\t\tm31 = te[ 2 ], m32 = te[ 6 ], m33 = te[ 10 ];\n\n\t\tif ( ( Math.abs( m12 - m21 ) < epsilon ) &&\n\t\t ( Math.abs( m13 - m31 ) < epsilon ) &&\n\t\t ( Math.abs( m23 - m32 ) < epsilon ) ) {\n\n\t\t\t// singularity found\n\t\t\t// first check for identity matrix which must have +1 for all terms\n\t\t\t// in leading diagonal and zero in other terms\n\n\t\t\tif ( ( Math.abs( m12 + m21 ) < epsilon2 ) &&\n\t\t\t ( Math.abs( m13 + m31 ) < epsilon2 ) &&\n\t\t\t ( Math.abs( m23 + m32 ) < epsilon2 ) &&\n\t\t\t ( Math.abs( m11 + m22 + m33 - 3 ) < epsilon2 ) ) {\n\n\t\t\t\t// this singularity is identity matrix so angle = 0\n\n\t\t\t\tthis.set( 1, 0, 0, 0 );\n\n\t\t\t\treturn this; // zero angle, arbitrary axis\n\n\t\t\t}\n\n\t\t\t// otherwise this singularity is angle = 180\n\n\t\t\tangle = Math.PI;\n\n\t\t\tconst xx = ( m11 + 1 ) / 2;\n\t\t\tconst yy = ( m22 + 1 ) / 2;\n\t\t\tconst zz = ( m33 + 1 ) / 2;\n\t\t\tconst xy = ( m12 + m21 ) / 4;\n\t\t\tconst xz = ( m13 + m31 ) / 4;\n\t\t\tconst yz = ( m23 + m32 ) / 4;\n\n\t\t\tif ( ( xx > yy ) && ( xx > zz ) ) {\n\n\t\t\t\t// m11 is the largest diagonal term\n\n\t\t\t\tif ( xx < epsilon ) {\n\n\t\t\t\t\tx = 0;\n\t\t\t\t\ty = 0.707106781;\n\t\t\t\t\tz = 0.707106781;\n\n\t\t\t\t} else {\n\n\t\t\t\t\tx = Math.sqrt( xx );\n\t\t\t\t\ty = xy / x;\n\t\t\t\t\tz = xz / x;\n\n\t\t\t\t}\n\n\t\t\t} else if ( yy > zz ) {\n\n\t\t\t\t// m22 is the largest diagonal term\n\n\t\t\t\tif ( yy < epsilon ) {\n\n\t\t\t\t\tx = 0.707106781;\n\t\t\t\t\ty = 0;\n\t\t\t\t\tz = 0.707106781;\n\n\t\t\t\t} else {\n\n\t\t\t\t\ty = Math.sqrt( yy );\n\t\t\t\t\tx = xy / y;\n\t\t\t\t\tz = yz / y;\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\t// m33 is the largest diagonal term so base result on this\n\n\t\t\t\tif ( zz < epsilon ) {\n\n\t\t\t\t\tx = 0.707106781;\n\t\t\t\t\ty = 0.707106781;\n\t\t\t\t\tz = 0;\n\n\t\t\t\t} else {\n\n\t\t\t\t\tz = Math.sqrt( zz );\n\t\t\t\t\tx = xz / z;\n\t\t\t\t\ty = yz / z;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tthis.set( x, y, z, angle );\n\n\t\t\treturn this; // return 180 deg rotation\n\n\t\t}\n\n\t\t// as we have reached here there are no singularities so we can handle normally\n\n\t\tlet s = Math.sqrt( ( m32 - m23 ) * ( m32 - m23 ) +\n\t\t\t( m13 - m31 ) * ( m13 - m31 ) +\n\t\t\t( m21 - m12 ) * ( m21 - m12 ) ); // used to normalize\n\n\t\tif ( Math.abs( s ) < 0.001 ) s = 1;\n\n\t\t// prevent divide by zero, should not happen if matrix is orthogonal and should be\n\t\t// caught by singularity test above, but I've left it in just in case\n\n\t\tthis.x = ( m32 - m23 ) / s;\n\t\tthis.y = ( m13 - m31 ) / s;\n\t\tthis.z = ( m21 - m12 ) / s;\n\t\tthis.w = Math.acos( ( m11 + m22 + m33 - 1 ) / 2 );\n\n\t\treturn this;\n\n\t}\n\n\tmin( v ) {\n\n\t\tthis.x = Math.min( this.x, v.x );\n\t\tthis.y = Math.min( this.y, v.y );\n\t\tthis.z = Math.min( this.z, v.z );\n\t\tthis.w = Math.min( this.w, v.w );\n\n\t\treturn this;\n\n\t}\n\n\tmax( v ) {\n\n\t\tthis.x = Math.max( this.x, v.x );\n\t\tthis.y = Math.max( this.y, v.y );\n\t\tthis.z = Math.max( this.z, v.z );\n\t\tthis.w = Math.max( this.w, v.w );\n\n\t\treturn this;\n\n\t}\n\n\tclamp( min, max ) {\n\n\t\t// assumes min < max, componentwise\n\n\t\tthis.x = Math.max( min.x, Math.min( max.x, this.x ) );\n\t\tthis.y = Math.max( min.y, Math.min( max.y, this.y ) );\n\t\tthis.z = Math.max( min.z, Math.min( max.z, this.z ) );\n\t\tthis.w = Math.max( min.w, Math.min( max.w, this.w ) );\n\n\t\treturn this;\n\n\t}\n\n\tclampScalar( minVal, maxVal ) {\n\n\t\tthis.x = Math.max( minVal, Math.min( maxVal, this.x ) );\n\t\tthis.y = Math.max( minVal, Math.min( maxVal, this.y ) );\n\t\tthis.z = Math.max( minVal, Math.min( maxVal, this.z ) );\n\t\tthis.w = Math.max( minVal, Math.min( maxVal, this.w ) );\n\n\t\treturn this;\n\n\t}\n\n\tclampLength( min, max ) {\n\n\t\tconst length = this.length();\n\n\t\treturn this.divideScalar( length || 1 ).multiplyScalar( Math.max( min, Math.min( max, length ) ) );\n\n\t}\n\n\tfloor() {\n\n\t\tthis.x = Math.floor( this.x );\n\t\tthis.y = Math.floor( this.y );\n\t\tthis.z = Math.floor( this.z );\n\t\tthis.w = Math.floor( this.w );\n\n\t\treturn this;\n\n\t}\n\n\tceil() {\n\n\t\tthis.x = Math.ceil( this.x );\n\t\tthis.y = Math.ceil( this.y );\n\t\tthis.z = Math.ceil( this.z );\n\t\tthis.w = Math.ceil( this.w );\n\n\t\treturn this;\n\n\t}\n\n\tround() {\n\n\t\tthis.x = Math.round( this.x );\n\t\tthis.y = Math.round( this.y );\n\t\tthis.z = Math.round( this.z );\n\t\tthis.w = Math.round( this.w );\n\n\t\treturn this;\n\n\t}\n\n\troundToZero() {\n\n\t\tthis.x = Math.trunc( this.x );\n\t\tthis.y = Math.trunc( this.y );\n\t\tthis.z = Math.trunc( this.z );\n\t\tthis.w = Math.trunc( this.w );\n\n\t\treturn this;\n\n\t}\n\n\tnegate() {\n\n\t\tthis.x = - this.x;\n\t\tthis.y = - this.y;\n\t\tthis.z = - this.z;\n\t\tthis.w = - this.w;\n\n\t\treturn this;\n\n\t}\n\n\tdot( v ) {\n\n\t\treturn this.x * v.x + this.y * v.y + this.z * v.z + this.w * v.w;\n\n\t}\n\n\tlengthSq() {\n\n\t\treturn this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w;\n\n\t}\n\n\tlength() {\n\n\t\treturn Math.sqrt( this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w );\n\n\t}\n\n\tmanhattanLength() {\n\n\t\treturn Math.abs( this.x ) + Math.abs( this.y ) + Math.abs( this.z ) + Math.abs( this.w );\n\n\t}\n\n\tnormalize() {\n\n\t\treturn this.divideScalar( this.length() || 1 );\n\n\t}\n\n\tsetLength( length ) {\n\n\t\treturn this.normalize().multiplyScalar( length );\n\n\t}\n\n\tlerp( v, alpha ) {\n\n\t\tthis.x += ( v.x - this.x ) * alpha;\n\t\tthis.y += ( v.y - this.y ) * alpha;\n\t\tthis.z += ( v.z - this.z ) * alpha;\n\t\tthis.w += ( v.w - this.w ) * alpha;\n\n\t\treturn this;\n\n\t}\n\n\tlerpVectors( v1, v2, alpha ) {\n\n\t\tthis.x = v1.x + ( v2.x - v1.x ) * alpha;\n\t\tthis.y = v1.y + ( v2.y - v1.y ) * alpha;\n\t\tthis.z = v1.z + ( v2.z - v1.z ) * alpha;\n\t\tthis.w = v1.w + ( v2.w - v1.w ) * alpha;\n\n\t\treturn this;\n\n\t}\n\n\tequals( v ) {\n\n\t\treturn ( ( v.x === this.x ) && ( v.y === this.y ) && ( v.z === this.z ) && ( v.w === this.w ) );\n\n\t}\n\n\tfromArray( array, offset = 0 ) {\n\n\t\tthis.x = array[ offset ];\n\t\tthis.y = array[ offset + 1 ];\n\t\tthis.z = array[ offset + 2 ];\n\t\tthis.w = array[ offset + 3 ];\n\n\t\treturn this;\n\n\t}\n\n\ttoArray( array = [], offset = 0 ) {\n\n\t\tarray[ offset ] = this.x;\n\t\tarray[ offset + 1 ] = this.y;\n\t\tarray[ offset + 2 ] = this.z;\n\t\tarray[ offset + 3 ] = this.w;\n\n\t\treturn array;\n\n\t}\n\n\tfromBufferAttribute( attribute, index ) {\n\n\t\tthis.x = attribute.getX( index );\n\t\tthis.y = attribute.getY( index );\n\t\tthis.z = attribute.getZ( index );\n\t\tthis.w = attribute.getW( index );\n\n\t\treturn this;\n\n\t}\n\n\trandom() {\n\n\t\tthis.x = Math.random();\n\t\tthis.y = Math.random();\n\t\tthis.z = Math.random();\n\t\tthis.w = Math.random();\n\n\t\treturn this;\n\n\t}\n\n\t*[ Symbol.iterator ]() {\n\n\t\tyield this.x;\n\t\tyield this.y;\n\t\tyield this.z;\n\t\tyield this.w;\n\n\t}\n\n}\n\n/*\n In options, we can specify:\n * Texture parameters for an auto-generated target texture\n * depthBuffer/stencilBuffer: Booleans to indicate if we should generate these buffers\n*/\nclass RenderTarget extends EventDispatcher {\n\n\tconstructor( width = 1, height = 1, options = {} ) {\n\n\t\tsuper();\n\n\t\tthis.isRenderTarget = true;\n\n\t\tthis.width = width;\n\t\tthis.height = height;\n\t\tthis.depth = 1;\n\n\t\tthis.scissor = new Vector4( 0, 0, width, height );\n\t\tthis.scissorTest = false;\n\n\t\tthis.viewport = new Vector4( 0, 0, width, height );\n\n\t\tconst image = { width: width, height: height, depth: 1 };\n\n\t\toptions = Object.assign( {\n\t\t\tgenerateMipmaps: false,\n\t\t\tinternalFormat: null,\n\t\t\tminFilter: LinearFilter,\n\t\t\tdepthBuffer: true,\n\t\t\tstencilBuffer: false,\n\t\t\tresolveDepthBuffer: true,\n\t\t\tresolveStencilBuffer: true,\n\t\t\tdepthTexture: null,\n\t\t\tsamples: 0,\n\t\t\tcount: 1\n\t\t}, options );\n\n\t\tconst texture = new Texture( image, options.mapping, options.wrapS, options.wrapT, options.magFilter, options.minFilter, options.format, options.type, options.anisotropy, options.colorSpace );\n\n\t\ttexture.flipY = false;\n\t\ttexture.generateMipmaps = options.generateMipmaps;\n\t\ttexture.internalFormat = options.internalFormat;\n\n\t\tthis.textures = [];\n\n\t\tconst count = options.count;\n\t\tfor ( let i = 0; i < count; i ++ ) {\n\n\t\t\tthis.textures[ i ] = texture.clone();\n\t\t\tthis.textures[ i ].isRenderTargetTexture = true;\n\n\t\t}\n\n\t\tthis.depthBuffer = options.depthBuffer;\n\t\tthis.stencilBuffer = options.stencilBuffer;\n\n\t\tthis.resolveDepthBuffer = options.resolveDepthBuffer;\n\t\tthis.resolveStencilBuffer = options.resolveStencilBuffer;\n\n\t\tthis.depthTexture = options.depthTexture;\n\n\t\tthis.samples = options.samples;\n\n\t}\n\n\tget texture() {\n\n\t\treturn this.textures[ 0 ];\n\n\t}\n\n\tset texture( value ) {\n\n\t\tthis.textures[ 0 ] = value;\n\n\t}\n\n\tsetSize( width, height, depth = 1 ) {\n\n\t\tif ( this.width !== width || this.height !== height || this.depth !== depth ) {\n\n\t\t\tthis.width = width;\n\t\t\tthis.height = height;\n\t\t\tthis.depth = depth;\n\n\t\t\tfor ( let i = 0, il = this.textures.length; i < il; i ++ ) {\n\n\t\t\t\tthis.textures[ i ].image.width = width;\n\t\t\t\tthis.textures[ i ].image.height = height;\n\t\t\t\tthis.textures[ i ].image.depth = depth;\n\n\t\t\t}\n\n\t\t\tthis.dispose();\n\n\t\t}\n\n\t\tthis.viewport.set( 0, 0, width, height );\n\t\tthis.scissor.set( 0, 0, width, height );\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n\tcopy( source ) {\n\n\t\tthis.width = source.width;\n\t\tthis.height = source.height;\n\t\tthis.depth = source.depth;\n\n\t\tthis.scissor.copy( source.scissor );\n\t\tthis.scissorTest = source.scissorTest;\n\n\t\tthis.viewport.copy( source.viewport );\n\n\t\tthis.textures.length = 0;\n\n\t\tfor ( let i = 0, il = source.textures.length; i < il; i ++ ) {\n\n\t\t\tthis.textures[ i ] = source.textures[ i ].clone();\n\t\t\tthis.textures[ i ].isRenderTargetTexture = true;\n\n\t\t}\n\n\t\t// ensure image object is not shared, see #20328\n\n\t\tconst image = Object.assign( {}, source.texture.image );\n\t\tthis.texture.source = new Source( image );\n\n\t\tthis.depthBuffer = source.depthBuffer;\n\t\tthis.stencilBuffer = source.stencilBuffer;\n\n\t\tthis.resolveDepthBuffer = source.resolveDepthBuffer;\n\t\tthis.resolveStencilBuffer = source.resolveStencilBuffer;\n\n\t\tif ( source.depthTexture !== null ) this.depthTexture = source.depthTexture.clone();\n\n\t\tthis.samples = source.samples;\n\n\t\treturn this;\n\n\t}\n\n\tdispose() {\n\n\t\tthis.dispatchEvent( { type: 'dispose' } );\n\n\t}\n\n}\n\nclass WebGLRenderTarget extends RenderTarget {\n\n\tconstructor( width = 1, height = 1, options = {} ) {\n\n\t\tsuper( width, height, options );\n\n\t\tthis.isWebGLRenderTarget = true;\n\n\t}\n\n}\n\nclass DataArrayTexture extends Texture {\n\n\tconstructor( data = null, width = 1, height = 1, depth = 1 ) {\n\n\t\tsuper( null );\n\n\t\tthis.isDataArrayTexture = true;\n\n\t\tthis.image = { data, width, height, depth };\n\n\t\tthis.magFilter = NearestFilter;\n\t\tthis.minFilter = NearestFilter;\n\n\t\tthis.wrapR = ClampToEdgeWrapping;\n\n\t\tthis.generateMipmaps = false;\n\t\tthis.flipY = false;\n\t\tthis.unpackAlignment = 1;\n\n\t\tthis.layerUpdates = new Set();\n\n\t}\n\n\taddLayerUpdate( layerIndex ) {\n\n\t\tthis.layerUpdates.add( layerIndex );\n\n\t}\n\n\tclearLayerUpdates() {\n\n\t\tthis.layerUpdates.clear();\n\n\t}\n\n}\n\nclass WebGLArrayRenderTarget extends WebGLRenderTarget {\n\n\tconstructor( width = 1, height = 1, depth = 1, options = {} ) {\n\n\t\tsuper( width, height, options );\n\n\t\tthis.isWebGLArrayRenderTarget = true;\n\n\t\tthis.depth = depth;\n\n\t\tthis.texture = new DataArrayTexture( null, width, height, depth );\n\n\t\tthis.texture.isRenderTargetTexture = true;\n\n\t}\n\n}\n\nclass Data3DTexture extends Texture {\n\n\tconstructor( data = null, width = 1, height = 1, depth = 1 ) {\n\n\t\t// We're going to add .setXXX() methods for setting properties later.\n\t\t// Users can still set in DataTexture3D directly.\n\t\t//\n\t\t//\tconst texture = new THREE.DataTexture3D( data, width, height, depth );\n\t\t// \ttexture.anisotropy = 16;\n\t\t//\n\t\t// See #14839\n\n\t\tsuper( null );\n\n\t\tthis.isData3DTexture = true;\n\n\t\tthis.image = { data, width, height, depth };\n\n\t\tthis.magFilter = NearestFilter;\n\t\tthis.minFilter = NearestFilter;\n\n\t\tthis.wrapR = ClampToEdgeWrapping;\n\n\t\tthis.generateMipmaps = false;\n\t\tthis.flipY = false;\n\t\tthis.unpackAlignment = 1;\n\n\t}\n\n}\n\nclass WebGL3DRenderTarget extends WebGLRenderTarget {\n\n\tconstructor( width = 1, height = 1, depth = 1, options = {} ) {\n\n\t\tsuper( width, height, options );\n\n\t\tthis.isWebGL3DRenderTarget = true;\n\n\t\tthis.depth = depth;\n\n\t\tthis.texture = new Data3DTexture( null, width, height, depth );\n\n\t\tthis.texture.isRenderTargetTexture = true;\n\n\t}\n\n}\n\nclass Quaternion {\n\n\tconstructor( x = 0, y = 0, z = 0, w = 1 ) {\n\n\t\tthis.isQuaternion = true;\n\n\t\tthis._x = x;\n\t\tthis._y = y;\n\t\tthis._z = z;\n\t\tthis._w = w;\n\n\t}\n\n\tstatic slerpFlat( dst, dstOffset, src0, srcOffset0, src1, srcOffset1, t ) {\n\n\t\t// fuzz-free, array-based Quaternion SLERP operation\n\n\t\tlet x0 = src0[ srcOffset0 + 0 ],\n\t\t\ty0 = src0[ srcOffset0 + 1 ],\n\t\t\tz0 = src0[ srcOffset0 + 2 ],\n\t\t\tw0 = src0[ srcOffset0 + 3 ];\n\n\t\tconst x1 = src1[ srcOffset1 + 0 ],\n\t\t\ty1 = src1[ srcOffset1 + 1 ],\n\t\t\tz1 = src1[ srcOffset1 + 2 ],\n\t\t\tw1 = src1[ srcOffset1 + 3 ];\n\n\t\tif ( t === 0 ) {\n\n\t\t\tdst[ dstOffset + 0 ] = x0;\n\t\t\tdst[ dstOffset + 1 ] = y0;\n\t\t\tdst[ dstOffset + 2 ] = z0;\n\t\t\tdst[ dstOffset + 3 ] = w0;\n\t\t\treturn;\n\n\t\t}\n\n\t\tif ( t === 1 ) {\n\n\t\t\tdst[ dstOffset + 0 ] = x1;\n\t\t\tdst[ dstOffset + 1 ] = y1;\n\t\t\tdst[ dstOffset + 2 ] = z1;\n\t\t\tdst[ dstOffset + 3 ] = w1;\n\t\t\treturn;\n\n\t\t}\n\n\t\tif ( w0 !== w1 || x0 !== x1 || y0 !== y1 || z0 !== z1 ) {\n\n\t\t\tlet s = 1 - t;\n\t\t\tconst cos = x0 * x1 + y0 * y1 + z0 * z1 + w0 * w1,\n\t\t\t\tdir = ( cos >= 0 ? 1 : - 1 ),\n\t\t\t\tsqrSin = 1 - cos * cos;\n\n\t\t\t// Skip the Slerp for tiny steps to avoid numeric problems:\n\t\t\tif ( sqrSin > Number.EPSILON ) {\n\n\t\t\t\tconst sin = Math.sqrt( sqrSin ),\n\t\t\t\t\tlen = Math.atan2( sin, cos * dir );\n\n\t\t\t\ts = Math.sin( s * len ) / sin;\n\t\t\t\tt = Math.sin( t * len ) / sin;\n\n\t\t\t}\n\n\t\t\tconst tDir = t * dir;\n\n\t\t\tx0 = x0 * s + x1 * tDir;\n\t\t\ty0 = y0 * s + y1 * tDir;\n\t\t\tz0 = z0 * s + z1 * tDir;\n\t\t\tw0 = w0 * s + w1 * tDir;\n\n\t\t\t// Normalize in case we just did a lerp:\n\t\t\tif ( s === 1 - t ) {\n\n\t\t\t\tconst f = 1 / Math.sqrt( x0 * x0 + y0 * y0 + z0 * z0 + w0 * w0 );\n\n\t\t\t\tx0 *= f;\n\t\t\t\ty0 *= f;\n\t\t\t\tz0 *= f;\n\t\t\t\tw0 *= f;\n\n\t\t\t}\n\n\t\t}\n\n\t\tdst[ dstOffset ] = x0;\n\t\tdst[ dstOffset + 1 ] = y0;\n\t\tdst[ dstOffset + 2 ] = z0;\n\t\tdst[ dstOffset + 3 ] = w0;\n\n\t}\n\n\tstatic multiplyQuaternionsFlat( dst, dstOffset, src0, srcOffset0, src1, srcOffset1 ) {\n\n\t\tconst x0 = src0[ srcOffset0 ];\n\t\tconst y0 = src0[ srcOffset0 + 1 ];\n\t\tconst z0 = src0[ srcOffset0 + 2 ];\n\t\tconst w0 = src0[ srcOffset0 + 3 ];\n\n\t\tconst x1 = src1[ srcOffset1 ];\n\t\tconst y1 = src1[ srcOffset1 + 1 ];\n\t\tconst z1 = src1[ srcOffset1 + 2 ];\n\t\tconst w1 = src1[ srcOffset1 + 3 ];\n\n\t\tdst[ dstOffset ] = x0 * w1 + w0 * x1 + y0 * z1 - z0 * y1;\n\t\tdst[ dstOffset + 1 ] = y0 * w1 + w0 * y1 + z0 * x1 - x0 * z1;\n\t\tdst[ dstOffset + 2 ] = z0 * w1 + w0 * z1 + x0 * y1 - y0 * x1;\n\t\tdst[ dstOffset + 3 ] = w0 * w1 - x0 * x1 - y0 * y1 - z0 * z1;\n\n\t\treturn dst;\n\n\t}\n\n\tget x() {\n\n\t\treturn this._x;\n\n\t}\n\n\tset x( value ) {\n\n\t\tthis._x = value;\n\t\tthis._onChangeCallback();\n\n\t}\n\n\tget y() {\n\n\t\treturn this._y;\n\n\t}\n\n\tset y( value ) {\n\n\t\tthis._y = value;\n\t\tthis._onChangeCallback();\n\n\t}\n\n\tget z() {\n\n\t\treturn this._z;\n\n\t}\n\n\tset z( value ) {\n\n\t\tthis._z = value;\n\t\tthis._onChangeCallback();\n\n\t}\n\n\tget w() {\n\n\t\treturn this._w;\n\n\t}\n\n\tset w( value ) {\n\n\t\tthis._w = value;\n\t\tthis._onChangeCallback();\n\n\t}\n\n\tset( x, y, z, w ) {\n\n\t\tthis._x = x;\n\t\tthis._y = y;\n\t\tthis._z = z;\n\t\tthis._w = w;\n\n\t\tthis._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor( this._x, this._y, this._z, this._w );\n\n\t}\n\n\tcopy( quaternion ) {\n\n\t\tthis._x = quaternion.x;\n\t\tthis._y = quaternion.y;\n\t\tthis._z = quaternion.z;\n\t\tthis._w = quaternion.w;\n\n\t\tthis._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\tsetFromEuler( euler, update = true ) {\n\n\t\tconst x = euler._x, y = euler._y, z = euler._z, order = euler._order;\n\n\t\t// http://www.mathworks.com/matlabcentral/fileexchange/\n\t\t// \t20696-function-to-convert-between-dcm-euler-angles-quaternions-and-euler-vectors/\n\t\t//\tcontent/SpinCalc.m\n\n\t\tconst cos = Math.cos;\n\t\tconst sin = Math.sin;\n\n\t\tconst c1 = cos( x / 2 );\n\t\tconst c2 = cos( y / 2 );\n\t\tconst c3 = cos( z / 2 );\n\n\t\tconst s1 = sin( x / 2 );\n\t\tconst s2 = sin( y / 2 );\n\t\tconst s3 = sin( z / 2 );\n\n\t\tswitch ( order ) {\n\n\t\t\tcase 'XYZ':\n\t\t\t\tthis._x = s1 * c2 * c3 + c1 * s2 * s3;\n\t\t\t\tthis._y = c1 * s2 * c3 - s1 * c2 * s3;\n\t\t\t\tthis._z = c1 * c2 * s3 + s1 * s2 * c3;\n\t\t\t\tthis._w = c1 * c2 * c3 - s1 * s2 * s3;\n\t\t\t\tbreak;\n\n\t\t\tcase 'YXZ':\n\t\t\t\tthis._x = s1 * c2 * c3 + c1 * s2 * s3;\n\t\t\t\tthis._y = c1 * s2 * c3 - s1 * c2 * s3;\n\t\t\t\tthis._z = c1 * c2 * s3 - s1 * s2 * c3;\n\t\t\t\tthis._w = c1 * c2 * c3 + s1 * s2 * s3;\n\t\t\t\tbreak;\n\n\t\t\tcase 'ZXY':\n\t\t\t\tthis._x = s1 * c2 * c3 - c1 * s2 * s3;\n\t\t\t\tthis._y = c1 * s2 * c3 + s1 * c2 * s3;\n\t\t\t\tthis._z = c1 * c2 * s3 + s1 * s2 * c3;\n\t\t\t\tthis._w = c1 * c2 * c3 - s1 * s2 * s3;\n\t\t\t\tbreak;\n\n\t\t\tcase 'ZYX':\n\t\t\t\tthis._x = s1 * c2 * c3 - c1 * s2 * s3;\n\t\t\t\tthis._y = c1 * s2 * c3 + s1 * c2 * s3;\n\t\t\t\tthis._z = c1 * c2 * s3 - s1 * s2 * c3;\n\t\t\t\tthis._w = c1 * c2 * c3 + s1 * s2 * s3;\n\t\t\t\tbreak;\n\n\t\t\tcase 'YZX':\n\t\t\t\tthis._x = s1 * c2 * c3 + c1 * s2 * s3;\n\t\t\t\tthis._y = c1 * s2 * c3 + s1 * c2 * s3;\n\t\t\t\tthis._z = c1 * c2 * s3 - s1 * s2 * c3;\n\t\t\t\tthis._w = c1 * c2 * c3 - s1 * s2 * s3;\n\t\t\t\tbreak;\n\n\t\t\tcase 'XZY':\n\t\t\t\tthis._x = s1 * c2 * c3 - c1 * s2 * s3;\n\t\t\t\tthis._y = c1 * s2 * c3 - s1 * c2 * s3;\n\t\t\t\tthis._z = c1 * c2 * s3 + s1 * s2 * c3;\n\t\t\t\tthis._w = c1 * c2 * c3 + s1 * s2 * s3;\n\t\t\t\tbreak;\n\n\t\t\tdefault:\n\t\t\t\tconsole.warn( 'THREE.Quaternion: .setFromEuler() encountered an unknown order: ' + order );\n\n\t\t}\n\n\t\tif ( update === true ) this._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\tsetFromAxisAngle( axis, angle ) {\n\n\t\t// http://www.euclideanspace.com/maths/geometry/rotations/conversions/angleToQuaternion/index.htm\n\n\t\t// assumes axis is normalized\n\n\t\tconst halfAngle = angle / 2, s = Math.sin( halfAngle );\n\n\t\tthis._x = axis.x * s;\n\t\tthis._y = axis.y * s;\n\t\tthis._z = axis.z * s;\n\t\tthis._w = Math.cos( halfAngle );\n\n\t\tthis._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\tsetFromRotationMatrix( m ) {\n\n\t\t// http://www.euclideanspace.com/maths/geometry/rotations/conversions/matrixToQuaternion/index.htm\n\n\t\t// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)\n\n\t\tconst te = m.elements,\n\n\t\t\tm11 = te[ 0 ], m12 = te[ 4 ], m13 = te[ 8 ],\n\t\t\tm21 = te[ 1 ], m22 = te[ 5 ], m23 = te[ 9 ],\n\t\t\tm31 = te[ 2 ], m32 = te[ 6 ], m33 = te[ 10 ],\n\n\t\t\ttrace = m11 + m22 + m33;\n\n\t\tif ( trace > 0 ) {\n\n\t\t\tconst s = 0.5 / Math.sqrt( trace + 1.0 );\n\n\t\t\tthis._w = 0.25 / s;\n\t\t\tthis._x = ( m32 - m23 ) * s;\n\t\t\tthis._y = ( m13 - m31 ) * s;\n\t\t\tthis._z = ( m21 - m12 ) * s;\n\n\t\t} else if ( m11 > m22 && m11 > m33 ) {\n\n\t\t\tconst s = 2.0 * Math.sqrt( 1.0 + m11 - m22 - m33 );\n\n\t\t\tthis._w = ( m32 - m23 ) / s;\n\t\t\tthis._x = 0.25 * s;\n\t\t\tthis._y = ( m12 + m21 ) / s;\n\t\t\tthis._z = ( m13 + m31 ) / s;\n\n\t\t} else if ( m22 > m33 ) {\n\n\t\t\tconst s = 2.0 * Math.sqrt( 1.0 + m22 - m11 - m33 );\n\n\t\t\tthis._w = ( m13 - m31 ) / s;\n\t\t\tthis._x = ( m12 + m21 ) / s;\n\t\t\tthis._y = 0.25 * s;\n\t\t\tthis._z = ( m23 + m32 ) / s;\n\n\t\t} else {\n\n\t\t\tconst s = 2.0 * Math.sqrt( 1.0 + m33 - m11 - m22 );\n\n\t\t\tthis._w = ( m21 - m12 ) / s;\n\t\t\tthis._x = ( m13 + m31 ) / s;\n\t\t\tthis._y = ( m23 + m32 ) / s;\n\t\t\tthis._z = 0.25 * s;\n\n\t\t}\n\n\t\tthis._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\tsetFromUnitVectors( vFrom, vTo ) {\n\n\t\t// assumes direction vectors vFrom and vTo are normalized\n\n\t\tlet r = vFrom.dot( vTo ) + 1;\n\n\t\tif ( r < Number.EPSILON ) {\n\n\t\t\t// vFrom and vTo point in opposite directions\n\n\t\t\tr = 0;\n\n\t\t\tif ( Math.abs( vFrom.x ) > Math.abs( vFrom.z ) ) {\n\n\t\t\t\tthis._x = - vFrom.y;\n\t\t\t\tthis._y = vFrom.x;\n\t\t\t\tthis._z = 0;\n\t\t\t\tthis._w = r;\n\n\t\t\t} else {\n\n\t\t\t\tthis._x = 0;\n\t\t\t\tthis._y = - vFrom.z;\n\t\t\t\tthis._z = vFrom.y;\n\t\t\t\tthis._w = r;\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\t// crossVectors( vFrom, vTo ); // inlined to avoid cyclic dependency on Vector3\n\n\t\t\tthis._x = vFrom.y * vTo.z - vFrom.z * vTo.y;\n\t\t\tthis._y = vFrom.z * vTo.x - vFrom.x * vTo.z;\n\t\t\tthis._z = vFrom.x * vTo.y - vFrom.y * vTo.x;\n\t\t\tthis._w = r;\n\n\t\t}\n\n\t\treturn this.normalize();\n\n\t}\n\n\tangleTo( q ) {\n\n\t\treturn 2 * Math.acos( Math.abs( clamp( this.dot( q ), - 1, 1 ) ) );\n\n\t}\n\n\trotateTowards( q, step ) {\n\n\t\tconst angle = this.angleTo( q );\n\n\t\tif ( angle === 0 ) return this;\n\n\t\tconst t = Math.min( 1, step / angle );\n\n\t\tthis.slerp( q, t );\n\n\t\treturn this;\n\n\t}\n\n\tidentity() {\n\n\t\treturn this.set( 0, 0, 0, 1 );\n\n\t}\n\n\tinvert() {\n\n\t\t// quaternion is assumed to have unit length\n\n\t\treturn this.conjugate();\n\n\t}\n\n\tconjugate() {\n\n\t\tthis._x *= - 1;\n\t\tthis._y *= - 1;\n\t\tthis._z *= - 1;\n\n\t\tthis._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\tdot( v ) {\n\n\t\treturn this._x * v._x + this._y * v._y + this._z * v._z + this._w * v._w;\n\n\t}\n\n\tlengthSq() {\n\n\t\treturn this._x * this._x + this._y * this._y + this._z * this._z + this._w * this._w;\n\n\t}\n\n\tlength() {\n\n\t\treturn Math.sqrt( this._x * this._x + this._y * this._y + this._z * this._z + this._w * this._w );\n\n\t}\n\n\tnormalize() {\n\n\t\tlet l = this.length();\n\n\t\tif ( l === 0 ) {\n\n\t\t\tthis._x = 0;\n\t\t\tthis._y = 0;\n\t\t\tthis._z = 0;\n\t\t\tthis._w = 1;\n\n\t\t} else {\n\n\t\t\tl = 1 / l;\n\n\t\t\tthis._x = this._x * l;\n\t\t\tthis._y = this._y * l;\n\t\t\tthis._z = this._z * l;\n\t\t\tthis._w = this._w * l;\n\n\t\t}\n\n\t\tthis._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\tmultiply( q ) {\n\n\t\treturn this.multiplyQuaternions( this, q );\n\n\t}\n\n\tpremultiply( q ) {\n\n\t\treturn this.multiplyQuaternions( q, this );\n\n\t}\n\n\tmultiplyQuaternions( a, b ) {\n\n\t\t// from http://www.euclideanspace.com/maths/algebra/realNormedAlgebra/quaternions/code/index.htm\n\n\t\tconst qax = a._x, qay = a._y, qaz = a._z, qaw = a._w;\n\t\tconst qbx = b._x, qby = b._y, qbz = b._z, qbw = b._w;\n\n\t\tthis._x = qax * qbw + qaw * qbx + qay * qbz - qaz * qby;\n\t\tthis._y = qay * qbw + qaw * qby + qaz * qbx - qax * qbz;\n\t\tthis._z = qaz * qbw + qaw * qbz + qax * qby - qay * qbx;\n\t\tthis._w = qaw * qbw - qax * qbx - qay * qby - qaz * qbz;\n\n\t\tthis._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\tslerp( qb, t ) {\n\n\t\tif ( t === 0 ) return this;\n\t\tif ( t === 1 ) return this.copy( qb );\n\n\t\tconst x = this._x, y = this._y, z = this._z, w = this._w;\n\n\t\t// http://www.euclideanspace.com/maths/algebra/realNormedAlgebra/quaternions/slerp/\n\n\t\tlet cosHalfTheta = w * qb._w + x * qb._x + y * qb._y + z * qb._z;\n\n\t\tif ( cosHalfTheta < 0 ) {\n\n\t\t\tthis._w = - qb._w;\n\t\t\tthis._x = - qb._x;\n\t\t\tthis._y = - qb._y;\n\t\t\tthis._z = - qb._z;\n\n\t\t\tcosHalfTheta = - cosHalfTheta;\n\n\t\t} else {\n\n\t\t\tthis.copy( qb );\n\n\t\t}\n\n\t\tif ( cosHalfTheta >= 1.0 ) {\n\n\t\t\tthis._w = w;\n\t\t\tthis._x = x;\n\t\t\tthis._y = y;\n\t\t\tthis._z = z;\n\n\t\t\treturn this;\n\n\t\t}\n\n\t\tconst sqrSinHalfTheta = 1.0 - cosHalfTheta * cosHalfTheta;\n\n\t\tif ( sqrSinHalfTheta <= Number.EPSILON ) {\n\n\t\t\tconst s = 1 - t;\n\t\t\tthis._w = s * w + t * this._w;\n\t\t\tthis._x = s * x + t * this._x;\n\t\t\tthis._y = s * y + t * this._y;\n\t\t\tthis._z = s * z + t * this._z;\n\n\t\t\tthis.normalize(); // normalize calls _onChangeCallback()\n\n\t\t\treturn this;\n\n\t\t}\n\n\t\tconst sinHalfTheta = Math.sqrt( sqrSinHalfTheta );\n\t\tconst halfTheta = Math.atan2( sinHalfTheta, cosHalfTheta );\n\t\tconst ratioA = Math.sin( ( 1 - t ) * halfTheta ) / sinHalfTheta,\n\t\t\tratioB = Math.sin( t * halfTheta ) / sinHalfTheta;\n\n\t\tthis._w = ( w * ratioA + this._w * ratioB );\n\t\tthis._x = ( x * ratioA + this._x * ratioB );\n\t\tthis._y = ( y * ratioA + this._y * ratioB );\n\t\tthis._z = ( z * ratioA + this._z * ratioB );\n\n\t\tthis._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\tslerpQuaternions( qa, qb, t ) {\n\n\t\treturn this.copy( qa ).slerp( qb, t );\n\n\t}\n\n\trandom() {\n\n\t\t// sets this quaternion to a uniform random unit quaternnion\n\n\t\t// Ken Shoemake\n\t\t// Uniform random rotations\n\t\t// D. Kirk, editor, Graphics Gems III, pages 124-132. Academic Press, New York, 1992.\n\n\t\tconst theta1 = 2 * Math.PI * Math.random();\n\t\tconst theta2 = 2 * Math.PI * Math.random();\n\n\t\tconst x0 = Math.random();\n\t\tconst r1 = Math.sqrt( 1 - x0 );\n\t\tconst r2 = Math.sqrt( x0 );\n\n\t\treturn this.set(\n\t\t\tr1 * Math.sin( theta1 ),\n\t\t\tr1 * Math.cos( theta1 ),\n\t\t\tr2 * Math.sin( theta2 ),\n\t\t\tr2 * Math.cos( theta2 ),\n\t\t);\n\n\t}\n\n\tequals( quaternion ) {\n\n\t\treturn ( quaternion._x === this._x ) && ( quaternion._y === this._y ) && ( quaternion._z === this._z ) && ( quaternion._w === this._w );\n\n\t}\n\n\tfromArray( array, offset = 0 ) {\n\n\t\tthis._x = array[ offset ];\n\t\tthis._y = array[ offset + 1 ];\n\t\tthis._z = array[ offset + 2 ];\n\t\tthis._w = array[ offset + 3 ];\n\n\t\tthis._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\ttoArray( array = [], offset = 0 ) {\n\n\t\tarray[ offset ] = this._x;\n\t\tarray[ offset + 1 ] = this._y;\n\t\tarray[ offset + 2 ] = this._z;\n\t\tarray[ offset + 3 ] = this._w;\n\n\t\treturn array;\n\n\t}\n\n\tfromBufferAttribute( attribute, index ) {\n\n\t\tthis._x = attribute.getX( index );\n\t\tthis._y = attribute.getY( index );\n\t\tthis._z = attribute.getZ( index );\n\t\tthis._w = attribute.getW( index );\n\n\t\tthis._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\ttoJSON() {\n\n\t\treturn this.toArray();\n\n\t}\n\n\t_onChange( callback ) {\n\n\t\tthis._onChangeCallback = callback;\n\n\t\treturn this;\n\n\t}\n\n\t_onChangeCallback() {}\n\n\t*[ Symbol.iterator ]() {\n\n\t\tyield this._x;\n\t\tyield this._y;\n\t\tyield this._z;\n\t\tyield this._w;\n\n\t}\n\n}\n\nclass Vector3 {\n\n\tconstructor( x = 0, y = 0, z = 0 ) {\n\n\t\tVector3.prototype.isVector3 = true;\n\n\t\tthis.x = x;\n\t\tthis.y = y;\n\t\tthis.z = z;\n\n\t}\n\n\tset( x, y, z ) {\n\n\t\tif ( z === undefined ) z = this.z; // sprite.scale.set(x,y)\n\n\t\tthis.x = x;\n\t\tthis.y = y;\n\t\tthis.z = z;\n\n\t\treturn this;\n\n\t}\n\n\tsetScalar( scalar ) {\n\n\t\tthis.x = scalar;\n\t\tthis.y = scalar;\n\t\tthis.z = scalar;\n\n\t\treturn this;\n\n\t}\n\n\tsetX( x ) {\n\n\t\tthis.x = x;\n\n\t\treturn this;\n\n\t}\n\n\tsetY( y ) {\n\n\t\tthis.y = y;\n\n\t\treturn this;\n\n\t}\n\n\tsetZ( z ) {\n\n\t\tthis.z = z;\n\n\t\treturn this;\n\n\t}\n\n\tsetComponent( index, value ) {\n\n\t\tswitch ( index ) {\n\n\t\t\tcase 0: this.x = value; break;\n\t\t\tcase 1: this.y = value; break;\n\t\t\tcase 2: this.z = value; break;\n\t\t\tdefault: throw new Error( 'index is out of range: ' + index );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tgetComponent( index ) {\n\n\t\tswitch ( index ) {\n\n\t\t\tcase 0: return this.x;\n\t\t\tcase 1: return this.y;\n\t\t\tcase 2: return this.z;\n\t\t\tdefault: throw new Error( 'index is out of range: ' + index );\n\n\t\t}\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor( this.x, this.y, this.z );\n\n\t}\n\n\tcopy( v ) {\n\n\t\tthis.x = v.x;\n\t\tthis.y = v.y;\n\t\tthis.z = v.z;\n\n\t\treturn this;\n\n\t}\n\n\tadd( v ) {\n\n\t\tthis.x += v.x;\n\t\tthis.y += v.y;\n\t\tthis.z += v.z;\n\n\t\treturn this;\n\n\t}\n\n\taddScalar( s ) {\n\n\t\tthis.x += s;\n\t\tthis.y += s;\n\t\tthis.z += s;\n\n\t\treturn this;\n\n\t}\n\n\taddVectors( a, b ) {\n\n\t\tthis.x = a.x + b.x;\n\t\tthis.y = a.y + b.y;\n\t\tthis.z = a.z + b.z;\n\n\t\treturn this;\n\n\t}\n\n\taddScaledVector( v, s ) {\n\n\t\tthis.x += v.x * s;\n\t\tthis.y += v.y * s;\n\t\tthis.z += v.z * s;\n\n\t\treturn this;\n\n\t}\n\n\tsub( v ) {\n\n\t\tthis.x -= v.x;\n\t\tthis.y -= v.y;\n\t\tthis.z -= v.z;\n\n\t\treturn this;\n\n\t}\n\n\tsubScalar( s ) {\n\n\t\tthis.x -= s;\n\t\tthis.y -= s;\n\t\tthis.z -= s;\n\n\t\treturn this;\n\n\t}\n\n\tsubVectors( a, b ) {\n\n\t\tthis.x = a.x - b.x;\n\t\tthis.y = a.y - b.y;\n\t\tthis.z = a.z - b.z;\n\n\t\treturn this;\n\n\t}\n\n\tmultiply( v ) {\n\n\t\tthis.x *= v.x;\n\t\tthis.y *= v.y;\n\t\tthis.z *= v.z;\n\n\t\treturn this;\n\n\t}\n\n\tmultiplyScalar( scalar ) {\n\n\t\tthis.x *= scalar;\n\t\tthis.y *= scalar;\n\t\tthis.z *= scalar;\n\n\t\treturn this;\n\n\t}\n\n\tmultiplyVectors( a, b ) {\n\n\t\tthis.x = a.x * b.x;\n\t\tthis.y = a.y * b.y;\n\t\tthis.z = a.z * b.z;\n\n\t\treturn this;\n\n\t}\n\n\tapplyEuler( euler ) {\n\n\t\treturn this.applyQuaternion( _quaternion$4.setFromEuler( euler ) );\n\n\t}\n\n\tapplyAxisAngle( axis, angle ) {\n\n\t\treturn this.applyQuaternion( _quaternion$4.setFromAxisAngle( axis, angle ) );\n\n\t}\n\n\tapplyMatrix3( m ) {\n\n\t\tconst x = this.x, y = this.y, z = this.z;\n\t\tconst e = m.elements;\n\n\t\tthis.x = e[ 0 ] * x + e[ 3 ] * y + e[ 6 ] * z;\n\t\tthis.y = e[ 1 ] * x + e[ 4 ] * y + e[ 7 ] * z;\n\t\tthis.z = e[ 2 ] * x + e[ 5 ] * y + e[ 8 ] * z;\n\n\t\treturn this;\n\n\t}\n\n\tapplyNormalMatrix( m ) {\n\n\t\treturn this.applyMatrix3( m ).normalize();\n\n\t}\n\n\tapplyMatrix4( m ) {\n\n\t\tconst x = this.x, y = this.y, z = this.z;\n\t\tconst e = m.elements;\n\n\t\tconst w = 1 / ( e[ 3 ] * x + e[ 7 ] * y + e[ 11 ] * z + e[ 15 ] );\n\n\t\tthis.x = ( e[ 0 ] * x + e[ 4 ] * y + e[ 8 ] * z + e[ 12 ] ) * w;\n\t\tthis.y = ( e[ 1 ] * x + e[ 5 ] * y + e[ 9 ] * z + e[ 13 ] ) * w;\n\t\tthis.z = ( e[ 2 ] * x + e[ 6 ] * y + e[ 10 ] * z + e[ 14 ] ) * w;\n\n\t\treturn this;\n\n\t}\n\n\tapplyQuaternion( q ) {\n\n\t\t// quaternion q is assumed to have unit length\n\n\t\tconst vx = this.x, vy = this.y, vz = this.z;\n\t\tconst qx = q.x, qy = q.y, qz = q.z, qw = q.w;\n\n\t\t// t = 2 * cross( q.xyz, v );\n\t\tconst tx = 2 * ( qy * vz - qz * vy );\n\t\tconst ty = 2 * ( qz * vx - qx * vz );\n\t\tconst tz = 2 * ( qx * vy - qy * vx );\n\n\t\t// v + q.w * t + cross( q.xyz, t );\n\t\tthis.x = vx + qw * tx + qy * tz - qz * ty;\n\t\tthis.y = vy + qw * ty + qz * tx - qx * tz;\n\t\tthis.z = vz + qw * tz + qx * ty - qy * tx;\n\n\t\treturn this;\n\n\t}\n\n\tproject( camera ) {\n\n\t\treturn this.applyMatrix4( camera.matrixWorldInverse ).applyMatrix4( camera.projectionMatrix );\n\n\t}\n\n\tunproject( camera ) {\n\n\t\treturn this.applyMatrix4( camera.projectionMatrixInverse ).applyMatrix4( camera.matrixWorld );\n\n\t}\n\n\ttransformDirection( m ) {\n\n\t\t// input: THREE.Matrix4 affine matrix\n\t\t// vector interpreted as a direction\n\n\t\tconst x = this.x, y = this.y, z = this.z;\n\t\tconst e = m.elements;\n\n\t\tthis.x = e[ 0 ] * x + e[ 4 ] * y + e[ 8 ] * z;\n\t\tthis.y = e[ 1 ] * x + e[ 5 ] * y + e[ 9 ] * z;\n\t\tthis.z = e[ 2 ] * x + e[ 6 ] * y + e[ 10 ] * z;\n\n\t\treturn this.normalize();\n\n\t}\n\n\tdivide( v ) {\n\n\t\tthis.x /= v.x;\n\t\tthis.y /= v.y;\n\t\tthis.z /= v.z;\n\n\t\treturn this;\n\n\t}\n\n\tdivideScalar( scalar ) {\n\n\t\treturn this.multiplyScalar( 1 / scalar );\n\n\t}\n\n\tmin( v ) {\n\n\t\tthis.x = Math.min( this.x, v.x );\n\t\tthis.y = Math.min( this.y, v.y );\n\t\tthis.z = Math.min( this.z, v.z );\n\n\t\treturn this;\n\n\t}\n\n\tmax( v ) {\n\n\t\tthis.x = Math.max( this.x, v.x );\n\t\tthis.y = Math.max( this.y, v.y );\n\t\tthis.z = Math.max( this.z, v.z );\n\n\t\treturn this;\n\n\t}\n\n\tclamp( min, max ) {\n\n\t\t// assumes min < max, componentwise\n\n\t\tthis.x = Math.max( min.x, Math.min( max.x, this.x ) );\n\t\tthis.y = Math.max( min.y, Math.min( max.y, this.y ) );\n\t\tthis.z = Math.max( min.z, Math.min( max.z, this.z ) );\n\n\t\treturn this;\n\n\t}\n\n\tclampScalar( minVal, maxVal ) {\n\n\t\tthis.x = Math.max( minVal, Math.min( maxVal, this.x ) );\n\t\tthis.y = Math.max( minVal, Math.min( maxVal, this.y ) );\n\t\tthis.z = Math.max( minVal, Math.min( maxVal, this.z ) );\n\n\t\treturn this;\n\n\t}\n\n\tclampLength( min, max ) {\n\n\t\tconst length = this.length();\n\n\t\treturn this.divideScalar( length || 1 ).multiplyScalar( Math.max( min, Math.min( max, length ) ) );\n\n\t}\n\n\tfloor() {\n\n\t\tthis.x = Math.floor( this.x );\n\t\tthis.y = Math.floor( this.y );\n\t\tthis.z = Math.floor( this.z );\n\n\t\treturn this;\n\n\t}\n\n\tceil() {\n\n\t\tthis.x = Math.ceil( this.x );\n\t\tthis.y = Math.ceil( this.y );\n\t\tthis.z = Math.ceil( this.z );\n\n\t\treturn this;\n\n\t}\n\n\tround() {\n\n\t\tthis.x = Math.round( this.x );\n\t\tthis.y = Math.round( this.y );\n\t\tthis.z = Math.round( this.z );\n\n\t\treturn this;\n\n\t}\n\n\troundToZero() {\n\n\t\tthis.x = Math.trunc( this.x );\n\t\tthis.y = Math.trunc( this.y );\n\t\tthis.z = Math.trunc( this.z );\n\n\t\treturn this;\n\n\t}\n\n\tnegate() {\n\n\t\tthis.x = - this.x;\n\t\tthis.y = - this.y;\n\t\tthis.z = - this.z;\n\n\t\treturn this;\n\n\t}\n\n\tdot( v ) {\n\n\t\treturn this.x * v.x + this.y * v.y + this.z * v.z;\n\n\t}\n\n\t// TODO lengthSquared?\n\n\tlengthSq() {\n\n\t\treturn this.x * this.x + this.y * this.y + this.z * this.z;\n\n\t}\n\n\tlength() {\n\n\t\treturn Math.sqrt( this.x * this.x + this.y * this.y + this.z * this.z );\n\n\t}\n\n\tmanhattanLength() {\n\n\t\treturn Math.abs( this.x ) + Math.abs( this.y ) + Math.abs( this.z );\n\n\t}\n\n\tnormalize() {\n\n\t\treturn this.divideScalar( this.length() || 1 );\n\n\t}\n\n\tsetLength( length ) {\n\n\t\treturn this.normalize().multiplyScalar( length );\n\n\t}\n\n\tlerp( v, alpha ) {\n\n\t\tthis.x += ( v.x - this.x ) * alpha;\n\t\tthis.y += ( v.y - this.y ) * alpha;\n\t\tthis.z += ( v.z - this.z ) * alpha;\n\n\t\treturn this;\n\n\t}\n\n\tlerpVectors( v1, v2, alpha ) {\n\n\t\tthis.x = v1.x + ( v2.x - v1.x ) * alpha;\n\t\tthis.y = v1.y + ( v2.y - v1.y ) * alpha;\n\t\tthis.z = v1.z + ( v2.z - v1.z ) * alpha;\n\n\t\treturn this;\n\n\t}\n\n\tcross( v ) {\n\n\t\treturn this.crossVectors( this, v );\n\n\t}\n\n\tcrossVectors( a, b ) {\n\n\t\tconst ax = a.x, ay = a.y, az = a.z;\n\t\tconst bx = b.x, by = b.y, bz = b.z;\n\n\t\tthis.x = ay * bz - az * by;\n\t\tthis.y = az * bx - ax * bz;\n\t\tthis.z = ax * by - ay * bx;\n\n\t\treturn this;\n\n\t}\n\n\tprojectOnVector( v ) {\n\n\t\tconst denominator = v.lengthSq();\n\n\t\tif ( denominator === 0 ) return this.set( 0, 0, 0 );\n\n\t\tconst scalar = v.dot( this ) / denominator;\n\n\t\treturn this.copy( v ).multiplyScalar( scalar );\n\n\t}\n\n\tprojectOnPlane( planeNormal ) {\n\n\t\t_vector$c.copy( this ).projectOnVector( planeNormal );\n\n\t\treturn this.sub( _vector$c );\n\n\t}\n\n\treflect( normal ) {\n\n\t\t// reflect incident vector off plane orthogonal to normal\n\t\t// normal is assumed to have unit length\n\n\t\treturn this.sub( _vector$c.copy( normal ).multiplyScalar( 2 * this.dot( normal ) ) );\n\n\t}\n\n\tangleTo( v ) {\n\n\t\tconst denominator = Math.sqrt( this.lengthSq() * v.lengthSq() );\n\n\t\tif ( denominator === 0 ) return Math.PI / 2;\n\n\t\tconst theta = this.dot( v ) / denominator;\n\n\t\t// clamp, to handle numerical problems\n\n\t\treturn Math.acos( clamp( theta, - 1, 1 ) );\n\n\t}\n\n\tdistanceTo( v ) {\n\n\t\treturn Math.sqrt( this.distanceToSquared( v ) );\n\n\t}\n\n\tdistanceToSquared( v ) {\n\n\t\tconst dx = this.x - v.x, dy = this.y - v.y, dz = this.z - v.z;\n\n\t\treturn dx * dx + dy * dy + dz * dz;\n\n\t}\n\n\tmanhattanDistanceTo( v ) {\n\n\t\treturn Math.abs( this.x - v.x ) + Math.abs( this.y - v.y ) + Math.abs( this.z - v.z );\n\n\t}\n\n\tsetFromSpherical( s ) {\n\n\t\treturn this.setFromSphericalCoords( s.radius, s.phi, s.theta );\n\n\t}\n\n\tsetFromSphericalCoords( radius, phi, theta ) {\n\n\t\tconst sinPhiRadius = Math.sin( phi ) * radius;\n\n\t\tthis.x = sinPhiRadius * Math.sin( theta );\n\t\tthis.y = Math.cos( phi ) * radius;\n\t\tthis.z = sinPhiRadius * Math.cos( theta );\n\n\t\treturn this;\n\n\t}\n\n\tsetFromCylindrical( c ) {\n\n\t\treturn this.setFromCylindricalCoords( c.radius, c.theta, c.y );\n\n\t}\n\n\tsetFromCylindricalCoords( radius, theta, y ) {\n\n\t\tthis.x = radius * Math.sin( theta );\n\t\tthis.y = y;\n\t\tthis.z = radius * Math.cos( theta );\n\n\t\treturn this;\n\n\t}\n\n\tsetFromMatrixPosition( m ) {\n\n\t\tconst e = m.elements;\n\n\t\tthis.x = e[ 12 ];\n\t\tthis.y = e[ 13 ];\n\t\tthis.z = e[ 14 ];\n\n\t\treturn this;\n\n\t}\n\n\tsetFromMatrixScale( m ) {\n\n\t\tconst sx = this.setFromMatrixColumn( m, 0 ).length();\n\t\tconst sy = this.setFromMatrixColumn( m, 1 ).length();\n\t\tconst sz = this.setFromMatrixColumn( m, 2 ).length();\n\n\t\tthis.x = sx;\n\t\tthis.y = sy;\n\t\tthis.z = sz;\n\n\t\treturn this;\n\n\t}\n\n\tsetFromMatrixColumn( m, index ) {\n\n\t\treturn this.fromArray( m.elements, index * 4 );\n\n\t}\n\n\tsetFromMatrix3Column( m, index ) {\n\n\t\treturn this.fromArray( m.elements, index * 3 );\n\n\t}\n\n\tsetFromEuler( e ) {\n\n\t\tthis.x = e._x;\n\t\tthis.y = e._y;\n\t\tthis.z = e._z;\n\n\t\treturn this;\n\n\t}\n\n\tsetFromColor( c ) {\n\n\t\tthis.x = c.r;\n\t\tthis.y = c.g;\n\t\tthis.z = c.b;\n\n\t\treturn this;\n\n\t}\n\n\tequals( v ) {\n\n\t\treturn ( ( v.x === this.x ) && ( v.y === this.y ) && ( v.z === this.z ) );\n\n\t}\n\n\tfromArray( array, offset = 0 ) {\n\n\t\tthis.x = array[ offset ];\n\t\tthis.y = array[ offset + 1 ];\n\t\tthis.z = array[ offset + 2 ];\n\n\t\treturn this;\n\n\t}\n\n\ttoArray( array = [], offset = 0 ) {\n\n\t\tarray[ offset ] = this.x;\n\t\tarray[ offset + 1 ] = this.y;\n\t\tarray[ offset + 2 ] = this.z;\n\n\t\treturn array;\n\n\t}\n\n\tfromBufferAttribute( attribute, index ) {\n\n\t\tthis.x = attribute.getX( index );\n\t\tthis.y = attribute.getY( index );\n\t\tthis.z = attribute.getZ( index );\n\n\t\treturn this;\n\n\t}\n\n\trandom() {\n\n\t\tthis.x = Math.random();\n\t\tthis.y = Math.random();\n\t\tthis.z = Math.random();\n\n\t\treturn this;\n\n\t}\n\n\trandomDirection() {\n\n\t\t// https://mathworld.wolfram.com/SpherePointPicking.html\n\n\t\tconst theta = Math.random() * Math.PI * 2;\n\t\tconst u = Math.random() * 2 - 1;\n\t\tconst c = Math.sqrt( 1 - u * u );\n\n\t\tthis.x = c * Math.cos( theta );\n\t\tthis.y = u;\n\t\tthis.z = c * Math.sin( theta );\n\n\t\treturn this;\n\n\t}\n\n\t*[ Symbol.iterator ]() {\n\n\t\tyield this.x;\n\t\tyield this.y;\n\t\tyield this.z;\n\n\t}\n\n}\n\nconst _vector$c = /*@__PURE__*/ new Vector3();\nconst _quaternion$4 = /*@__PURE__*/ new Quaternion();\n\nclass Box3 {\n\n\tconstructor( min = new Vector3( + Infinity, + Infinity, + Infinity ), max = new Vector3( - Infinity, - Infinity, - Infinity ) ) {\n\n\t\tthis.isBox3 = true;\n\n\t\tthis.min = min;\n\t\tthis.max = max;\n\n\t}\n\n\tset( min, max ) {\n\n\t\tthis.min.copy( min );\n\t\tthis.max.copy( max );\n\n\t\treturn this;\n\n\t}\n\n\tsetFromArray( array ) {\n\n\t\tthis.makeEmpty();\n\n\t\tfor ( let i = 0, il = array.length; i < il; i += 3 ) {\n\n\t\t\tthis.expandByPoint( _vector$b.fromArray( array, i ) );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tsetFromBufferAttribute( attribute ) {\n\n\t\tthis.makeEmpty();\n\n\t\tfor ( let i = 0, il = attribute.count; i < il; i ++ ) {\n\n\t\t\tthis.expandByPoint( _vector$b.fromBufferAttribute( attribute, i ) );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tsetFromPoints( points ) {\n\n\t\tthis.makeEmpty();\n\n\t\tfor ( let i = 0, il = points.length; i < il; i ++ ) {\n\n\t\t\tthis.expandByPoint( points[ i ] );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tsetFromCenterAndSize( center, size ) {\n\n\t\tconst halfSize = _vector$b.copy( size ).multiplyScalar( 0.5 );\n\n\t\tthis.min.copy( center ).sub( halfSize );\n\t\tthis.max.copy( center ).add( halfSize );\n\n\t\treturn this;\n\n\t}\n\n\tsetFromObject( object, precise = false ) {\n\n\t\tthis.makeEmpty();\n\n\t\treturn this.expandByObject( object, precise );\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n\tcopy( box ) {\n\n\t\tthis.min.copy( box.min );\n\t\tthis.max.copy( box.max );\n\n\t\treturn this;\n\n\t}\n\n\tmakeEmpty() {\n\n\t\tthis.min.x = this.min.y = this.min.z = + Infinity;\n\t\tthis.max.x = this.max.y = this.max.z = - Infinity;\n\n\t\treturn this;\n\n\t}\n\n\tisEmpty() {\n\n\t\t// this is a more robust check for empty than ( volume <= 0 ) because volume can get positive with two negative axes\n\n\t\treturn ( this.max.x < this.min.x ) || ( this.max.y < this.min.y ) || ( this.max.z < this.min.z );\n\n\t}\n\n\tgetCenter( target ) {\n\n\t\treturn this.isEmpty() ? target.set( 0, 0, 0 ) : target.addVectors( this.min, this.max ).multiplyScalar( 0.5 );\n\n\t}\n\n\tgetSize( target ) {\n\n\t\treturn this.isEmpty() ? target.set( 0, 0, 0 ) : target.subVectors( this.max, this.min );\n\n\t}\n\n\texpandByPoint( point ) {\n\n\t\tthis.min.min( point );\n\t\tthis.max.max( point );\n\n\t\treturn this;\n\n\t}\n\n\texpandByVector( vector ) {\n\n\t\tthis.min.sub( vector );\n\t\tthis.max.add( vector );\n\n\t\treturn this;\n\n\t}\n\n\texpandByScalar( scalar ) {\n\n\t\tthis.min.addScalar( - scalar );\n\t\tthis.max.addScalar( scalar );\n\n\t\treturn this;\n\n\t}\n\n\texpandByObject( object, precise = false ) {\n\n\t\t// Computes the world-axis-aligned bounding box of an object (including its children),\n\t\t// accounting for both the object's, and children's, world transforms\n\n\t\tobject.updateWorldMatrix( false, false );\n\n\t\tconst geometry = object.geometry;\n\n\t\tif ( geometry !== undefined ) {\n\n\t\t\tconst positionAttribute = geometry.getAttribute( 'position' );\n\n\t\t\t// precise AABB computation based on vertex data requires at least a position attribute.\n\t\t\t// instancing isn't supported so far and uses the normal (conservative) code path.\n\n\t\t\tif ( precise === true && positionAttribute !== undefined && object.isInstancedMesh !== true ) {\n\n\t\t\t\tfor ( let i = 0, l = positionAttribute.count; i < l; i ++ ) {\n\n\t\t\t\t\tif ( object.isMesh === true ) {\n\n\t\t\t\t\t\tobject.getVertexPosition( i, _vector$b );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\t_vector$b.fromBufferAttribute( positionAttribute, i );\n\n\t\t\t\t\t}\n\n\t\t\t\t\t_vector$b.applyMatrix4( object.matrixWorld );\n\t\t\t\t\tthis.expandByPoint( _vector$b );\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\tif ( object.boundingBox !== undefined ) {\n\n\t\t\t\t\t// object-level bounding box\n\n\t\t\t\t\tif ( object.boundingBox === null ) {\n\n\t\t\t\t\t\tobject.computeBoundingBox();\n\n\t\t\t\t\t}\n\n\t\t\t\t\t_box$4.copy( object.boundingBox );\n\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// geometry-level bounding box\n\n\t\t\t\t\tif ( geometry.boundingBox === null ) {\n\n\t\t\t\t\t\tgeometry.computeBoundingBox();\n\n\t\t\t\t\t}\n\n\t\t\t\t\t_box$4.copy( geometry.boundingBox );\n\n\t\t\t\t}\n\n\t\t\t\t_box$4.applyMatrix4( object.matrixWorld );\n\n\t\t\t\tthis.union( _box$4 );\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst children = object.children;\n\n\t\tfor ( let i = 0, l = children.length; i < l; i ++ ) {\n\n\t\t\tthis.expandByObject( children[ i ], precise );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tcontainsPoint( point ) {\n\n\t\treturn point.x < this.min.x || point.x > this.max.x ||\n\t\t\tpoint.y < this.min.y || point.y > this.max.y ||\n\t\t\tpoint.z < this.min.z || point.z > this.max.z ? false : true;\n\n\t}\n\n\tcontainsBox( box ) {\n\n\t\treturn this.min.x <= box.min.x && box.max.x <= this.max.x &&\n\t\t\tthis.min.y <= box.min.y && box.max.y <= this.max.y &&\n\t\t\tthis.min.z <= box.min.z && box.max.z <= this.max.z;\n\n\t}\n\n\tgetParameter( point, target ) {\n\n\t\t// This can potentially have a divide by zero if the box\n\t\t// has a size dimension of 0.\n\n\t\treturn target.set(\n\t\t\t( point.x - this.min.x ) / ( this.max.x - this.min.x ),\n\t\t\t( point.y - this.min.y ) / ( this.max.y - this.min.y ),\n\t\t\t( point.z - this.min.z ) / ( this.max.z - this.min.z )\n\t\t);\n\n\t}\n\n\tintersectsBox( box ) {\n\n\t\t// using 6 splitting planes to rule out intersections.\n\t\treturn box.max.x < this.min.x || box.min.x > this.max.x ||\n\t\t\tbox.max.y < this.min.y || box.min.y > this.max.y ||\n\t\t\tbox.max.z < this.min.z || box.min.z > this.max.z ? false : true;\n\n\t}\n\n\tintersectsSphere( sphere ) {\n\n\t\t// Find the point on the AABB closest to the sphere center.\n\t\tthis.clampPoint( sphere.center, _vector$b );\n\n\t\t// If that point is inside the sphere, the AABB and sphere intersect.\n\t\treturn _vector$b.distanceToSquared( sphere.center ) <= ( sphere.radius * sphere.radius );\n\n\t}\n\n\tintersectsPlane( plane ) {\n\n\t\t// We compute the minimum and maximum dot product values. If those values\n\t\t// are on the same side (back or front) of the plane, then there is no intersection.\n\n\t\tlet min, max;\n\n\t\tif ( plane.normal.x > 0 ) {\n\n\t\t\tmin = plane.normal.x * this.min.x;\n\t\t\tmax = plane.normal.x * this.max.x;\n\n\t\t} else {\n\n\t\t\tmin = plane.normal.x * this.max.x;\n\t\t\tmax = plane.normal.x * this.min.x;\n\n\t\t}\n\n\t\tif ( plane.normal.y > 0 ) {\n\n\t\t\tmin += plane.normal.y * this.min.y;\n\t\t\tmax += plane.normal.y * this.max.y;\n\n\t\t} else {\n\n\t\t\tmin += plane.normal.y * this.max.y;\n\t\t\tmax += plane.normal.y * this.min.y;\n\n\t\t}\n\n\t\tif ( plane.normal.z > 0 ) {\n\n\t\t\tmin += plane.normal.z * this.min.z;\n\t\t\tmax += plane.normal.z * this.max.z;\n\n\t\t} else {\n\n\t\t\tmin += plane.normal.z * this.max.z;\n\t\t\tmax += plane.normal.z * this.min.z;\n\n\t\t}\n\n\t\treturn ( min <= - plane.constant && max >= - plane.constant );\n\n\t}\n\n\tintersectsTriangle( triangle ) {\n\n\t\tif ( this.isEmpty() ) {\n\n\t\t\treturn false;\n\n\t\t}\n\n\t\t// compute box center and extents\n\t\tthis.getCenter( _center );\n\t\t_extents.subVectors( this.max, _center );\n\n\t\t// translate triangle to aabb origin\n\t\t_v0$2.subVectors( triangle.a, _center );\n\t\t_v1$7.subVectors( triangle.b, _center );\n\t\t_v2$4.subVectors( triangle.c, _center );\n\n\t\t// compute edge vectors for triangle\n\t\t_f0.subVectors( _v1$7, _v0$2 );\n\t\t_f1.subVectors( _v2$4, _v1$7 );\n\t\t_f2.subVectors( _v0$2, _v2$4 );\n\n\t\t// test against axes that are given by cross product combinations of the edges of the triangle and the edges of the aabb\n\t\t// make an axis testing of each of the 3 sides of the aabb against each of the 3 sides of the triangle = 9 axis of separation\n\t\t// axis_ij = u_i x f_j (u0, u1, u2 = face normals of aabb = x,y,z axes vectors since aabb is axis aligned)\n\t\tlet axes = [\n\t\t\t0, - _f0.z, _f0.y, 0, - _f1.z, _f1.y, 0, - _f2.z, _f2.y,\n\t\t\t_f0.z, 0, - _f0.x, _f1.z, 0, - _f1.x, _f2.z, 0, - _f2.x,\n\t\t\t- _f0.y, _f0.x, 0, - _f1.y, _f1.x, 0, - _f2.y, _f2.x, 0\n\t\t];\n\t\tif ( ! satForAxes( axes, _v0$2, _v1$7, _v2$4, _extents ) ) {\n\n\t\t\treturn false;\n\n\t\t}\n\n\t\t// test 3 face normals from the aabb\n\t\taxes = [ 1, 0, 0, 0, 1, 0, 0, 0, 1 ];\n\t\tif ( ! satForAxes( axes, _v0$2, _v1$7, _v2$4, _extents ) ) {\n\n\t\t\treturn false;\n\n\t\t}\n\n\t\t// finally testing the face normal of the triangle\n\t\t// use already existing triangle edge vectors here\n\t\t_triangleNormal.crossVectors( _f0, _f1 );\n\t\taxes = [ _triangleNormal.x, _triangleNormal.y, _triangleNormal.z ];\n\n\t\treturn satForAxes( axes, _v0$2, _v1$7, _v2$4, _extents );\n\n\t}\n\n\tclampPoint( point, target ) {\n\n\t\treturn target.copy( point ).clamp( this.min, this.max );\n\n\t}\n\n\tdistanceToPoint( point ) {\n\n\t\treturn this.clampPoint( point, _vector$b ).distanceTo( point );\n\n\t}\n\n\tgetBoundingSphere( target ) {\n\n\t\tif ( this.isEmpty() ) {\n\n\t\t\ttarget.makeEmpty();\n\n\t\t} else {\n\n\t\t\tthis.getCenter( target.center );\n\n\t\t\ttarget.radius = this.getSize( _vector$b ).length() * 0.5;\n\n\t\t}\n\n\t\treturn target;\n\n\t}\n\n\tintersect( box ) {\n\n\t\tthis.min.max( box.min );\n\t\tthis.max.min( box.max );\n\n\t\t// ensure that if there is no overlap, the result is fully empty, not slightly empty with non-inf/+inf values that will cause subsequence intersects to erroneously return valid values.\n\t\tif ( this.isEmpty() ) this.makeEmpty();\n\n\t\treturn this;\n\n\t}\n\n\tunion( box ) {\n\n\t\tthis.min.min( box.min );\n\t\tthis.max.max( box.max );\n\n\t\treturn this;\n\n\t}\n\n\tapplyMatrix4( matrix ) {\n\n\t\t// transform of empty box is an empty box.\n\t\tif ( this.isEmpty() ) return this;\n\n\t\t// NOTE: I am using a binary pattern to specify all 2^3 combinations below\n\t\t_points[ 0 ].set( this.min.x, this.min.y, this.min.z ).applyMatrix4( matrix ); // 000\n\t\t_points[ 1 ].set( this.min.x, this.min.y, this.max.z ).applyMatrix4( matrix ); // 001\n\t\t_points[ 2 ].set( this.min.x, this.max.y, this.min.z ).applyMatrix4( matrix ); // 010\n\t\t_points[ 3 ].set( this.min.x, this.max.y, this.max.z ).applyMatrix4( matrix ); // 011\n\t\t_points[ 4 ].set( this.max.x, this.min.y, this.min.z ).applyMatrix4( matrix ); // 100\n\t\t_points[ 5 ].set( this.max.x, this.min.y, this.max.z ).applyMatrix4( matrix ); // 101\n\t\t_points[ 6 ].set( this.max.x, this.max.y, this.min.z ).applyMatrix4( matrix ); // 110\n\t\t_points[ 7 ].set( this.max.x, this.max.y, this.max.z ).applyMatrix4( matrix ); // 111\n\n\t\tthis.setFromPoints( _points );\n\n\t\treturn this;\n\n\t}\n\n\ttranslate( offset ) {\n\n\t\tthis.min.add( offset );\n\t\tthis.max.add( offset );\n\n\t\treturn this;\n\n\t}\n\n\tequals( box ) {\n\n\t\treturn box.min.equals( this.min ) && box.max.equals( this.max );\n\n\t}\n\n}\n\nconst _points = [\n\t/*@__PURE__*/ new Vector3(),\n\t/*@__PURE__*/ new Vector3(),\n\t/*@__PURE__*/ new Vector3(),\n\t/*@__PURE__*/ new Vector3(),\n\t/*@__PURE__*/ new Vector3(),\n\t/*@__PURE__*/ new Vector3(),\n\t/*@__PURE__*/ new Vector3(),\n\t/*@__PURE__*/ new Vector3()\n];\n\nconst _vector$b = /*@__PURE__*/ new Vector3();\n\nconst _box$4 = /*@__PURE__*/ new Box3();\n\n// triangle centered vertices\n\nconst _v0$2 = /*@__PURE__*/ new Vector3();\nconst _v1$7 = /*@__PURE__*/ new Vector3();\nconst _v2$4 = /*@__PURE__*/ new Vector3();\n\n// triangle edge vectors\n\nconst _f0 = /*@__PURE__*/ new Vector3();\nconst _f1 = /*@__PURE__*/ new Vector3();\nconst _f2 = /*@__PURE__*/ new Vector3();\n\nconst _center = /*@__PURE__*/ new Vector3();\nconst _extents = /*@__PURE__*/ new Vector3();\nconst _triangleNormal = /*@__PURE__*/ new Vector3();\nconst _testAxis = /*@__PURE__*/ new Vector3();\n\nfunction satForAxes( axes, v0, v1, v2, extents ) {\n\n\tfor ( let i = 0, j = axes.length - 3; i <= j; i += 3 ) {\n\n\t\t_testAxis.fromArray( axes, i );\n\t\t// project the aabb onto the separating axis\n\t\tconst r = extents.x * Math.abs( _testAxis.x ) + extents.y * Math.abs( _testAxis.y ) + extents.z * Math.abs( _testAxis.z );\n\t\t// project all 3 vertices of the triangle onto the separating axis\n\t\tconst p0 = v0.dot( _testAxis );\n\t\tconst p1 = v1.dot( _testAxis );\n\t\tconst p2 = v2.dot( _testAxis );\n\t\t// actual test, basically see if either of the most extreme of the triangle points intersects r\n\t\tif ( Math.max( - Math.max( p0, p1, p2 ), Math.min( p0, p1, p2 ) ) > r ) {\n\n\t\t\t// points of the projected triangle are outside the projected half-length of the aabb\n\t\t\t// the axis is separating and we can exit\n\t\t\treturn false;\n\n\t\t}\n\n\t}\n\n\treturn true;\n\n}\n\nconst _box$3 = /*@__PURE__*/ new Box3();\nconst _v1$6 = /*@__PURE__*/ new Vector3();\nconst _v2$3 = /*@__PURE__*/ new Vector3();\n\nclass Sphere {\n\n\tconstructor( center = new Vector3(), radius = - 1 ) {\n\n\t\tthis.isSphere = true;\n\n\t\tthis.center = center;\n\t\tthis.radius = radius;\n\n\t}\n\n\tset( center, radius ) {\n\n\t\tthis.center.copy( center );\n\t\tthis.radius = radius;\n\n\t\treturn this;\n\n\t}\n\n\tsetFromPoints( points, optionalCenter ) {\n\n\t\tconst center = this.center;\n\n\t\tif ( optionalCenter !== undefined ) {\n\n\t\t\tcenter.copy( optionalCenter );\n\n\t\t} else {\n\n\t\t\t_box$3.setFromPoints( points ).getCenter( center );\n\n\t\t}\n\n\t\tlet maxRadiusSq = 0;\n\n\t\tfor ( let i = 0, il = points.length; i < il; i ++ ) {\n\n\t\t\tmaxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( points[ i ] ) );\n\n\t\t}\n\n\t\tthis.radius = Math.sqrt( maxRadiusSq );\n\n\t\treturn this;\n\n\t}\n\n\tcopy( sphere ) {\n\n\t\tthis.center.copy( sphere.center );\n\t\tthis.radius = sphere.radius;\n\n\t\treturn this;\n\n\t}\n\n\tisEmpty() {\n\n\t\treturn ( this.radius < 0 );\n\n\t}\n\n\tmakeEmpty() {\n\n\t\tthis.center.set( 0, 0, 0 );\n\t\tthis.radius = - 1;\n\n\t\treturn this;\n\n\t}\n\n\tcontainsPoint( point ) {\n\n\t\treturn ( point.distanceToSquared( this.center ) <= ( this.radius * this.radius ) );\n\n\t}\n\n\tdistanceToPoint( point ) {\n\n\t\treturn ( point.distanceTo( this.center ) - this.radius );\n\n\t}\n\n\tintersectsSphere( sphere ) {\n\n\t\tconst radiusSum = this.radius + sphere.radius;\n\n\t\treturn sphere.center.distanceToSquared( this.center ) <= ( radiusSum * radiusSum );\n\n\t}\n\n\tintersectsBox( box ) {\n\n\t\treturn box.intersectsSphere( this );\n\n\t}\n\n\tintersectsPlane( plane ) {\n\n\t\treturn Math.abs( plane.distanceToPoint( this.center ) ) <= this.radius;\n\n\t}\n\n\tclampPoint( point, target ) {\n\n\t\tconst deltaLengthSq = this.center.distanceToSquared( point );\n\n\t\ttarget.copy( point );\n\n\t\tif ( deltaLengthSq > ( this.radius * this.radius ) ) {\n\n\t\t\ttarget.sub( this.center ).normalize();\n\t\t\ttarget.multiplyScalar( this.radius ).add( this.center );\n\n\t\t}\n\n\t\treturn target;\n\n\t}\n\n\tgetBoundingBox( target ) {\n\n\t\tif ( this.isEmpty() ) {\n\n\t\t\t// Empty sphere produces empty bounding box\n\t\t\ttarget.makeEmpty();\n\t\t\treturn target;\n\n\t\t}\n\n\t\ttarget.set( this.center, this.center );\n\t\ttarget.expandByScalar( this.radius );\n\n\t\treturn target;\n\n\t}\n\n\tapplyMatrix4( matrix ) {\n\n\t\tthis.center.applyMatrix4( matrix );\n\t\tthis.radius = this.radius * matrix.getMaxScaleOnAxis();\n\n\t\treturn this;\n\n\t}\n\n\ttranslate( offset ) {\n\n\t\tthis.center.add( offset );\n\n\t\treturn this;\n\n\t}\n\n\texpandByPoint( point ) {\n\n\t\tif ( this.isEmpty() ) {\n\n\t\t\tthis.center.copy( point );\n\n\t\t\tthis.radius = 0;\n\n\t\t\treturn this;\n\n\t\t}\n\n\t\t_v1$6.subVectors( point, this.center );\n\n\t\tconst lengthSq = _v1$6.lengthSq();\n\n\t\tif ( lengthSq > ( this.radius * this.radius ) ) {\n\n\t\t\t// calculate the minimal sphere\n\n\t\t\tconst length = Math.sqrt( lengthSq );\n\n\t\t\tconst delta = ( length - this.radius ) * 0.5;\n\n\t\t\tthis.center.addScaledVector( _v1$6, delta / length );\n\n\t\t\tthis.radius += delta;\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tunion( sphere ) {\n\n\t\tif ( sphere.isEmpty() ) {\n\n\t\t\treturn this;\n\n\t\t}\n\n\t\tif ( this.isEmpty() ) {\n\n\t\t\tthis.copy( sphere );\n\n\t\t\treturn this;\n\n\t\t}\n\n\t\tif ( this.center.equals( sphere.center ) === true ) {\n\n\t\t\t this.radius = Math.max( this.radius, sphere.radius );\n\n\t\t} else {\n\n\t\t\t_v2$3.subVectors( sphere.center, this.center ).setLength( sphere.radius );\n\n\t\t\tthis.expandByPoint( _v1$6.copy( sphere.center ).add( _v2$3 ) );\n\n\t\t\tthis.expandByPoint( _v1$6.copy( sphere.center ).sub( _v2$3 ) );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tequals( sphere ) {\n\n\t\treturn sphere.center.equals( this.center ) && ( sphere.radius === this.radius );\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n}\n\nconst _vector$a = /*@__PURE__*/ new Vector3();\nconst _segCenter = /*@__PURE__*/ new Vector3();\nconst _segDir = /*@__PURE__*/ new Vector3();\nconst _diff = /*@__PURE__*/ new Vector3();\n\nconst _edge1 = /*@__PURE__*/ new Vector3();\nconst _edge2 = /*@__PURE__*/ new Vector3();\nconst _normal$1 = /*@__PURE__*/ new Vector3();\n\nclass Ray {\n\n\tconstructor( origin = new Vector3(), direction = new Vector3( 0, 0, - 1 ) ) {\n\n\t\tthis.origin = origin;\n\t\tthis.direction = direction;\n\n\t}\n\n\tset( origin, direction ) {\n\n\t\tthis.origin.copy( origin );\n\t\tthis.direction.copy( direction );\n\n\t\treturn this;\n\n\t}\n\n\tcopy( ray ) {\n\n\t\tthis.origin.copy( ray.origin );\n\t\tthis.direction.copy( ray.direction );\n\n\t\treturn this;\n\n\t}\n\n\tat( t, target ) {\n\n\t\treturn target.copy( this.origin ).addScaledVector( this.direction, t );\n\n\t}\n\n\tlookAt( v ) {\n\n\t\tthis.direction.copy( v ).sub( this.origin ).normalize();\n\n\t\treturn this;\n\n\t}\n\n\trecast( t ) {\n\n\t\tthis.origin.copy( this.at( t, _vector$a ) );\n\n\t\treturn this;\n\n\t}\n\n\tclosestPointToPoint( point, target ) {\n\n\t\ttarget.subVectors( point, this.origin );\n\n\t\tconst directionDistance = target.dot( this.direction );\n\n\t\tif ( directionDistance < 0 ) {\n\n\t\t\treturn target.copy( this.origin );\n\n\t\t}\n\n\t\treturn target.copy( this.origin ).addScaledVector( this.direction, directionDistance );\n\n\t}\n\n\tdistanceToPoint( point ) {\n\n\t\treturn Math.sqrt( this.distanceSqToPoint( point ) );\n\n\t}\n\n\tdistanceSqToPoint( point ) {\n\n\t\tconst directionDistance = _vector$a.subVectors( point, this.origin ).dot( this.direction );\n\n\t\t// point behind the ray\n\n\t\tif ( directionDistance < 0 ) {\n\n\t\t\treturn this.origin.distanceToSquared( point );\n\n\t\t}\n\n\t\t_vector$a.copy( this.origin ).addScaledVector( this.direction, directionDistance );\n\n\t\treturn _vector$a.distanceToSquared( point );\n\n\t}\n\n\tdistanceSqToSegment( v0, v1, optionalPointOnRay, optionalPointOnSegment ) {\n\n\t\t// from https://github.com/pmjoniak/GeometricTools/blob/master/GTEngine/Include/Mathematics/GteDistRaySegment.h\n\t\t// It returns the min distance between the ray and the segment\n\t\t// defined by v0 and v1\n\t\t// It can also set two optional targets :\n\t\t// - The closest point on the ray\n\t\t// - The closest point on the segment\n\n\t\t_segCenter.copy( v0 ).add( v1 ).multiplyScalar( 0.5 );\n\t\t_segDir.copy( v1 ).sub( v0 ).normalize();\n\t\t_diff.copy( this.origin ).sub( _segCenter );\n\n\t\tconst segExtent = v0.distanceTo( v1 ) * 0.5;\n\t\tconst a01 = - this.direction.dot( _segDir );\n\t\tconst b0 = _diff.dot( this.direction );\n\t\tconst b1 = - _diff.dot( _segDir );\n\t\tconst c = _diff.lengthSq();\n\t\tconst det = Math.abs( 1 - a01 * a01 );\n\t\tlet s0, s1, sqrDist, extDet;\n\n\t\tif ( det > 0 ) {\n\n\t\t\t// The ray and segment are not parallel.\n\n\t\t\ts0 = a01 * b1 - b0;\n\t\t\ts1 = a01 * b0 - b1;\n\t\t\textDet = segExtent * det;\n\n\t\t\tif ( s0 >= 0 ) {\n\n\t\t\t\tif ( s1 >= - extDet ) {\n\n\t\t\t\t\tif ( s1 <= extDet ) {\n\n\t\t\t\t\t\t// region 0\n\t\t\t\t\t\t// Minimum at interior points of ray and segment.\n\n\t\t\t\t\t\tconst invDet = 1 / det;\n\t\t\t\t\t\ts0 *= invDet;\n\t\t\t\t\t\ts1 *= invDet;\n\t\t\t\t\t\tsqrDist = s0 * ( s0 + a01 * s1 + 2 * b0 ) + s1 * ( a01 * s0 + s1 + 2 * b1 ) + c;\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\t// region 1\n\n\t\t\t\t\t\ts1 = segExtent;\n\t\t\t\t\t\ts0 = Math.max( 0, - ( a01 * s1 + b0 ) );\n\t\t\t\t\t\tsqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// region 5\n\n\t\t\t\t\ts1 = - segExtent;\n\t\t\t\t\ts0 = Math.max( 0, - ( a01 * s1 + b0 ) );\n\t\t\t\t\tsqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\tif ( s1 <= - extDet ) {\n\n\t\t\t\t\t// region 4\n\n\t\t\t\t\ts0 = Math.max( 0, - ( - a01 * segExtent + b0 ) );\n\t\t\t\t\ts1 = ( s0 > 0 ) ? - segExtent : Math.min( Math.max( - segExtent, - b1 ), segExtent );\n\t\t\t\t\tsqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;\n\n\t\t\t\t} else if ( s1 <= extDet ) {\n\n\t\t\t\t\t// region 3\n\n\t\t\t\t\ts0 = 0;\n\t\t\t\t\ts1 = Math.min( Math.max( - segExtent, - b1 ), segExtent );\n\t\t\t\t\tsqrDist = s1 * ( s1 + 2 * b1 ) + c;\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// region 2\n\n\t\t\t\t\ts0 = Math.max( 0, - ( a01 * segExtent + b0 ) );\n\t\t\t\t\ts1 = ( s0 > 0 ) ? segExtent : Math.min( Math.max( - segExtent, - b1 ), segExtent );\n\t\t\t\t\tsqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\t// Ray and segment are parallel.\n\n\t\t\ts1 = ( a01 > 0 ) ? - segExtent : segExtent;\n\t\t\ts0 = Math.max( 0, - ( a01 * s1 + b0 ) );\n\t\t\tsqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;\n\n\t\t}\n\n\t\tif ( optionalPointOnRay ) {\n\n\t\t\toptionalPointOnRay.copy( this.origin ).addScaledVector( this.direction, s0 );\n\n\t\t}\n\n\t\tif ( optionalPointOnSegment ) {\n\n\t\t\toptionalPointOnSegment.copy( _segCenter ).addScaledVector( _segDir, s1 );\n\n\t\t}\n\n\t\treturn sqrDist;\n\n\t}\n\n\tintersectSphere( sphere, target ) {\n\n\t\t_vector$a.subVectors( sphere.center, this.origin );\n\t\tconst tca = _vector$a.dot( this.direction );\n\t\tconst d2 = _vector$a.dot( _vector$a ) - tca * tca;\n\t\tconst radius2 = sphere.radius * sphere.radius;\n\n\t\tif ( d2 > radius2 ) return null;\n\n\t\tconst thc = Math.sqrt( radius2 - d2 );\n\n\t\t// t0 = first intersect point - entrance on front of sphere\n\t\tconst t0 = tca - thc;\n\n\t\t// t1 = second intersect point - exit point on back of sphere\n\t\tconst t1 = tca + thc;\n\n\t\t// test to see if t1 is behind the ray - if so, return null\n\t\tif ( t1 < 0 ) return null;\n\n\t\t// test to see if t0 is behind the ray:\n\t\t// if it is, the ray is inside the sphere, so return the second exit point scaled by t1,\n\t\t// in order to always return an intersect point that is in front of the ray.\n\t\tif ( t0 < 0 ) return this.at( t1, target );\n\n\t\t// else t0 is in front of the ray, so return the first collision point scaled by t0\n\t\treturn this.at( t0, target );\n\n\t}\n\n\tintersectsSphere( sphere ) {\n\n\t\treturn this.distanceSqToPoint( sphere.center ) <= ( sphere.radius * sphere.radius );\n\n\t}\n\n\tdistanceToPlane( plane ) {\n\n\t\tconst denominator = plane.normal.dot( this.direction );\n\n\t\tif ( denominator === 0 ) {\n\n\t\t\t// line is coplanar, return origin\n\t\t\tif ( plane.distanceToPoint( this.origin ) === 0 ) {\n\n\t\t\t\treturn 0;\n\n\t\t\t}\n\n\t\t\t// Null is preferable to undefined since undefined means.... it is undefined\n\n\t\t\treturn null;\n\n\t\t}\n\n\t\tconst t = - ( this.origin.dot( plane.normal ) + plane.constant ) / denominator;\n\n\t\t// Return if the ray never intersects the plane\n\n\t\treturn t >= 0 ? t : null;\n\n\t}\n\n\tintersectPlane( plane, target ) {\n\n\t\tconst t = this.distanceToPlane( plane );\n\n\t\tif ( t === null ) {\n\n\t\t\treturn null;\n\n\t\t}\n\n\t\treturn this.at( t, target );\n\n\t}\n\n\tintersectsPlane( plane ) {\n\n\t\t// check if the ray lies on the plane first\n\n\t\tconst distToPoint = plane.distanceToPoint( this.origin );\n\n\t\tif ( distToPoint === 0 ) {\n\n\t\t\treturn true;\n\n\t\t}\n\n\t\tconst denominator = plane.normal.dot( this.direction );\n\n\t\tif ( denominator * distToPoint < 0 ) {\n\n\t\t\treturn true;\n\n\t\t}\n\n\t\t// ray origin is behind the plane (and is pointing behind it)\n\n\t\treturn false;\n\n\t}\n\n\tintersectBox( box, target ) {\n\n\t\tlet tmin, tmax, tymin, tymax, tzmin, tzmax;\n\n\t\tconst invdirx = 1 / this.direction.x,\n\t\t\tinvdiry = 1 / this.direction.y,\n\t\t\tinvdirz = 1 / this.direction.z;\n\n\t\tconst origin = this.origin;\n\n\t\tif ( invdirx >= 0 ) {\n\n\t\t\ttmin = ( box.min.x - origin.x ) * invdirx;\n\t\t\ttmax = ( box.max.x - origin.x ) * invdirx;\n\n\t\t} else {\n\n\t\t\ttmin = ( box.max.x - origin.x ) * invdirx;\n\t\t\ttmax = ( box.min.x - origin.x ) * invdirx;\n\n\t\t}\n\n\t\tif ( invdiry >= 0 ) {\n\n\t\t\ttymin = ( box.min.y - origin.y ) * invdiry;\n\t\t\ttymax = ( box.max.y - origin.y ) * invdiry;\n\n\t\t} else {\n\n\t\t\ttymin = ( box.max.y - origin.y ) * invdiry;\n\t\t\ttymax = ( box.min.y - origin.y ) * invdiry;\n\n\t\t}\n\n\t\tif ( ( tmin > tymax ) || ( tymin > tmax ) ) return null;\n\n\t\tif ( tymin > tmin || isNaN( tmin ) ) tmin = tymin;\n\n\t\tif ( tymax < tmax || isNaN( tmax ) ) tmax = tymax;\n\n\t\tif ( invdirz >= 0 ) {\n\n\t\t\ttzmin = ( box.min.z - origin.z ) * invdirz;\n\t\t\ttzmax = ( box.max.z - origin.z ) * invdirz;\n\n\t\t} else {\n\n\t\t\ttzmin = ( box.max.z - origin.z ) * invdirz;\n\t\t\ttzmax = ( box.min.z - origin.z ) * invdirz;\n\n\t\t}\n\n\t\tif ( ( tmin > tzmax ) || ( tzmin > tmax ) ) return null;\n\n\t\tif ( tzmin > tmin || tmin !== tmin ) tmin = tzmin;\n\n\t\tif ( tzmax < tmax || tmax !== tmax ) tmax = tzmax;\n\n\t\t//return point closest to the ray (positive side)\n\n\t\tif ( tmax < 0 ) return null;\n\n\t\treturn this.at( tmin >= 0 ? tmin : tmax, target );\n\n\t}\n\n\tintersectsBox( box ) {\n\n\t\treturn this.intersectBox( box, _vector$a ) !== null;\n\n\t}\n\n\tintersectTriangle( a, b, c, backfaceCulling, target ) {\n\n\t\t// Compute the offset origin, edges, and normal.\n\n\t\t// from https://github.com/pmjoniak/GeometricTools/blob/master/GTEngine/Include/Mathematics/GteIntrRay3Triangle3.h\n\n\t\t_edge1.subVectors( b, a );\n\t\t_edge2.subVectors( c, a );\n\t\t_normal$1.crossVectors( _edge1, _edge2 );\n\n\t\t// Solve Q + t*D = b1*E1 + b2*E2 (Q = kDiff, D = ray direction,\n\t\t// E1 = kEdge1, E2 = kEdge2, N = Cross(E1,E2)) by\n\t\t// |Dot(D,N)|*b1 = sign(Dot(D,N))*Dot(D,Cross(Q,E2))\n\t\t// |Dot(D,N)|*b2 = sign(Dot(D,N))*Dot(D,Cross(E1,Q))\n\t\t// |Dot(D,N)|*t = -sign(Dot(D,N))*Dot(Q,N)\n\t\tlet DdN = this.direction.dot( _normal$1 );\n\t\tlet sign;\n\n\t\tif ( DdN > 0 ) {\n\n\t\t\tif ( backfaceCulling ) return null;\n\t\t\tsign = 1;\n\n\t\t} else if ( DdN < 0 ) {\n\n\t\t\tsign = - 1;\n\t\t\tDdN = - DdN;\n\n\t\t} else {\n\n\t\t\treturn null;\n\n\t\t}\n\n\t\t_diff.subVectors( this.origin, a );\n\t\tconst DdQxE2 = sign * this.direction.dot( _edge2.crossVectors( _diff, _edge2 ) );\n\n\t\t// b1 < 0, no intersection\n\t\tif ( DdQxE2 < 0 ) {\n\n\t\t\treturn null;\n\n\t\t}\n\n\t\tconst DdE1xQ = sign * this.direction.dot( _edge1.cross( _diff ) );\n\n\t\t// b2 < 0, no intersection\n\t\tif ( DdE1xQ < 0 ) {\n\n\t\t\treturn null;\n\n\t\t}\n\n\t\t// b1+b2 > 1, no intersection\n\t\tif ( DdQxE2 + DdE1xQ > DdN ) {\n\n\t\t\treturn null;\n\n\t\t}\n\n\t\t// Line intersects triangle, check if ray does.\n\t\tconst QdN = - sign * _diff.dot( _normal$1 );\n\n\t\t// t < 0, no intersection\n\t\tif ( QdN < 0 ) {\n\n\t\t\treturn null;\n\n\t\t}\n\n\t\t// Ray intersects triangle.\n\t\treturn this.at( QdN / DdN, target );\n\n\t}\n\n\tapplyMatrix4( matrix4 ) {\n\n\t\tthis.origin.applyMatrix4( matrix4 );\n\t\tthis.direction.transformDirection( matrix4 );\n\n\t\treturn this;\n\n\t}\n\n\tequals( ray ) {\n\n\t\treturn ray.origin.equals( this.origin ) && ray.direction.equals( this.direction );\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n}\n\nclass Matrix4 {\n\n\tconstructor( n11, n12, n13, n14, n21, n22, n23, n24, n31, n32, n33, n34, n41, n42, n43, n44 ) {\n\n\t\tMatrix4.prototype.isMatrix4 = true;\n\n\t\tthis.elements = [\n\n\t\t\t1, 0, 0, 0,\n\t\t\t0, 1, 0, 0,\n\t\t\t0, 0, 1, 0,\n\t\t\t0, 0, 0, 1\n\n\t\t];\n\n\t\tif ( n11 !== undefined ) {\n\n\t\t\tthis.set( n11, n12, n13, n14, n21, n22, n23, n24, n31, n32, n33, n34, n41, n42, n43, n44 );\n\n\t\t}\n\n\t}\n\n\tset( n11, n12, n13, n14, n21, n22, n23, n24, n31, n32, n33, n34, n41, n42, n43, n44 ) {\n\n\t\tconst te = this.elements;\n\n\t\tte[ 0 ] = n11; te[ 4 ] = n12; te[ 8 ] = n13; te[ 12 ] = n14;\n\t\tte[ 1 ] = n21; te[ 5 ] = n22; te[ 9 ] = n23; te[ 13 ] = n24;\n\t\tte[ 2 ] = n31; te[ 6 ] = n32; te[ 10 ] = n33; te[ 14 ] = n34;\n\t\tte[ 3 ] = n41; te[ 7 ] = n42; te[ 11 ] = n43; te[ 15 ] = n44;\n\n\t\treturn this;\n\n\t}\n\n\tidentity() {\n\n\t\tthis.set(\n\n\t\t\t1, 0, 0, 0,\n\t\t\t0, 1, 0, 0,\n\t\t\t0, 0, 1, 0,\n\t\t\t0, 0, 0, 1\n\n\t\t);\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\treturn new Matrix4().fromArray( this.elements );\n\n\t}\n\n\tcopy( m ) {\n\n\t\tconst te = this.elements;\n\t\tconst me = m.elements;\n\n\t\tte[ 0 ] = me[ 0 ]; te[ 1 ] = me[ 1 ]; te[ 2 ] = me[ 2 ]; te[ 3 ] = me[ 3 ];\n\t\tte[ 4 ] = me[ 4 ]; te[ 5 ] = me[ 5 ]; te[ 6 ] = me[ 6 ]; te[ 7 ] = me[ 7 ];\n\t\tte[ 8 ] = me[ 8 ]; te[ 9 ] = me[ 9 ]; te[ 10 ] = me[ 10 ]; te[ 11 ] = me[ 11 ];\n\t\tte[ 12 ] = me[ 12 ]; te[ 13 ] = me[ 13 ]; te[ 14 ] = me[ 14 ]; te[ 15 ] = me[ 15 ];\n\n\t\treturn this;\n\n\t}\n\n\tcopyPosition( m ) {\n\n\t\tconst te = this.elements, me = m.elements;\n\n\t\tte[ 12 ] = me[ 12 ];\n\t\tte[ 13 ] = me[ 13 ];\n\t\tte[ 14 ] = me[ 14 ];\n\n\t\treturn this;\n\n\t}\n\n\tsetFromMatrix3( m ) {\n\n\t\tconst me = m.elements;\n\n\t\tthis.set(\n\n\t\t\tme[ 0 ], me[ 3 ], me[ 6 ], 0,\n\t\t\tme[ 1 ], me[ 4 ], me[ 7 ], 0,\n\t\t\tme[ 2 ], me[ 5 ], me[ 8 ], 0,\n\t\t\t0, 0, 0, 1\n\n\t\t);\n\n\t\treturn this;\n\n\t}\n\n\textractBasis( xAxis, yAxis, zAxis ) {\n\n\t\txAxis.setFromMatrixColumn( this, 0 );\n\t\tyAxis.setFromMatrixColumn( this, 1 );\n\t\tzAxis.setFromMatrixColumn( this, 2 );\n\n\t\treturn this;\n\n\t}\n\n\tmakeBasis( xAxis, yAxis, zAxis ) {\n\n\t\tthis.set(\n\t\t\txAxis.x, yAxis.x, zAxis.x, 0,\n\t\t\txAxis.y, yAxis.y, zAxis.y, 0,\n\t\t\txAxis.z, yAxis.z, zAxis.z, 0,\n\t\t\t0, 0, 0, 1\n\t\t);\n\n\t\treturn this;\n\n\t}\n\n\textractRotation( m ) {\n\n\t\t// this method does not support reflection matrices\n\n\t\tconst te = this.elements;\n\t\tconst me = m.elements;\n\n\t\tconst scaleX = 1 / _v1$5.setFromMatrixColumn( m, 0 ).length();\n\t\tconst scaleY = 1 / _v1$5.setFromMatrixColumn( m, 1 ).length();\n\t\tconst scaleZ = 1 / _v1$5.setFromMatrixColumn( m, 2 ).length();\n\n\t\tte[ 0 ] = me[ 0 ] * scaleX;\n\t\tte[ 1 ] = me[ 1 ] * scaleX;\n\t\tte[ 2 ] = me[ 2 ] * scaleX;\n\t\tte[ 3 ] = 0;\n\n\t\tte[ 4 ] = me[ 4 ] * scaleY;\n\t\tte[ 5 ] = me[ 5 ] * scaleY;\n\t\tte[ 6 ] = me[ 6 ] * scaleY;\n\t\tte[ 7 ] = 0;\n\n\t\tte[ 8 ] = me[ 8 ] * scaleZ;\n\t\tte[ 9 ] = me[ 9 ] * scaleZ;\n\t\tte[ 10 ] = me[ 10 ] * scaleZ;\n\t\tte[ 11 ] = 0;\n\n\t\tte[ 12 ] = 0;\n\t\tte[ 13 ] = 0;\n\t\tte[ 14 ] = 0;\n\t\tte[ 15 ] = 1;\n\n\t\treturn this;\n\n\t}\n\n\tmakeRotationFromEuler( euler ) {\n\n\t\tconst te = this.elements;\n\n\t\tconst x = euler.x, y = euler.y, z = euler.z;\n\t\tconst a = Math.cos( x ), b = Math.sin( x );\n\t\tconst c = Math.cos( y ), d = Math.sin( y );\n\t\tconst e = Math.cos( z ), f = Math.sin( z );\n\n\t\tif ( euler.order === 'XYZ' ) {\n\n\t\t\tconst ae = a * e, af = a * f, be = b * e, bf = b * f;\n\n\t\t\tte[ 0 ] = c * e;\n\t\t\tte[ 4 ] = - c * f;\n\t\t\tte[ 8 ] = d;\n\n\t\t\tte[ 1 ] = af + be * d;\n\t\t\tte[ 5 ] = ae - bf * d;\n\t\t\tte[ 9 ] = - b * c;\n\n\t\t\tte[ 2 ] = bf - ae * d;\n\t\t\tte[ 6 ] = be + af * d;\n\t\t\tte[ 10 ] = a * c;\n\n\t\t} else if ( euler.order === 'YXZ' ) {\n\n\t\t\tconst ce = c * e, cf = c * f, de = d * e, df = d * f;\n\n\t\t\tte[ 0 ] = ce + df * b;\n\t\t\tte[ 4 ] = de * b - cf;\n\t\t\tte[ 8 ] = a * d;\n\n\t\t\tte[ 1 ] = a * f;\n\t\t\tte[ 5 ] = a * e;\n\t\t\tte[ 9 ] = - b;\n\n\t\t\tte[ 2 ] = cf * b - de;\n\t\t\tte[ 6 ] = df + ce * b;\n\t\t\tte[ 10 ] = a * c;\n\n\t\t} else if ( euler.order === 'ZXY' ) {\n\n\t\t\tconst ce = c * e, cf = c * f, de = d * e, df = d * f;\n\n\t\t\tte[ 0 ] = ce - df * b;\n\t\t\tte[ 4 ] = - a * f;\n\t\t\tte[ 8 ] = de + cf * b;\n\n\t\t\tte[ 1 ] = cf + de * b;\n\t\t\tte[ 5 ] = a * e;\n\t\t\tte[ 9 ] = df - ce * b;\n\n\t\t\tte[ 2 ] = - a * d;\n\t\t\tte[ 6 ] = b;\n\t\t\tte[ 10 ] = a * c;\n\n\t\t} else if ( euler.order === 'ZYX' ) {\n\n\t\t\tconst ae = a * e, af = a * f, be = b * e, bf = b * f;\n\n\t\t\tte[ 0 ] = c * e;\n\t\t\tte[ 4 ] = be * d - af;\n\t\t\tte[ 8 ] = ae * d + bf;\n\n\t\t\tte[ 1 ] = c * f;\n\t\t\tte[ 5 ] = bf * d + ae;\n\t\t\tte[ 9 ] = af * d - be;\n\n\t\t\tte[ 2 ] = - d;\n\t\t\tte[ 6 ] = b * c;\n\t\t\tte[ 10 ] = a * c;\n\n\t\t} else if ( euler.order === 'YZX' ) {\n\n\t\t\tconst ac = a * c, ad = a * d, bc = b * c, bd = b * d;\n\n\t\t\tte[ 0 ] = c * e;\n\t\t\tte[ 4 ] = bd - ac * f;\n\t\t\tte[ 8 ] = bc * f + ad;\n\n\t\t\tte[ 1 ] = f;\n\t\t\tte[ 5 ] = a * e;\n\t\t\tte[ 9 ] = - b * e;\n\n\t\t\tte[ 2 ] = - d * e;\n\t\t\tte[ 6 ] = ad * f + bc;\n\t\t\tte[ 10 ] = ac - bd * f;\n\n\t\t} else if ( euler.order === 'XZY' ) {\n\n\t\t\tconst ac = a * c, ad = a * d, bc = b * c, bd = b * d;\n\n\t\t\tte[ 0 ] = c * e;\n\t\t\tte[ 4 ] = - f;\n\t\t\tte[ 8 ] = d * e;\n\n\t\t\tte[ 1 ] = ac * f + bd;\n\t\t\tte[ 5 ] = a * e;\n\t\t\tte[ 9 ] = ad * f - bc;\n\n\t\t\tte[ 2 ] = bc * f - ad;\n\t\t\tte[ 6 ] = b * e;\n\t\t\tte[ 10 ] = bd * f + ac;\n\n\t\t}\n\n\t\t// bottom row\n\t\tte[ 3 ] = 0;\n\t\tte[ 7 ] = 0;\n\t\tte[ 11 ] = 0;\n\n\t\t// last column\n\t\tte[ 12 ] = 0;\n\t\tte[ 13 ] = 0;\n\t\tte[ 14 ] = 0;\n\t\tte[ 15 ] = 1;\n\n\t\treturn this;\n\n\t}\n\n\tmakeRotationFromQuaternion( q ) {\n\n\t\treturn this.compose( _zero, q, _one );\n\n\t}\n\n\tlookAt( eye, target, up ) {\n\n\t\tconst te = this.elements;\n\n\t\t_z.subVectors( eye, target );\n\n\t\tif ( _z.lengthSq() === 0 ) {\n\n\t\t\t// eye and target are in the same position\n\n\t\t\t_z.z = 1;\n\n\t\t}\n\n\t\t_z.normalize();\n\t\t_x.crossVectors( up, _z );\n\n\t\tif ( _x.lengthSq() === 0 ) {\n\n\t\t\t// up and z are parallel\n\n\t\t\tif ( Math.abs( up.z ) === 1 ) {\n\n\t\t\t\t_z.x += 0.0001;\n\n\t\t\t} else {\n\n\t\t\t\t_z.z += 0.0001;\n\n\t\t\t}\n\n\t\t\t_z.normalize();\n\t\t\t_x.crossVectors( up, _z );\n\n\t\t}\n\n\t\t_x.normalize();\n\t\t_y.crossVectors( _z, _x );\n\n\t\tte[ 0 ] = _x.x; te[ 4 ] = _y.x; te[ 8 ] = _z.x;\n\t\tte[ 1 ] = _x.y; te[ 5 ] = _y.y; te[ 9 ] = _z.y;\n\t\tte[ 2 ] = _x.z; te[ 6 ] = _y.z; te[ 10 ] = _z.z;\n\n\t\treturn this;\n\n\t}\n\n\tmultiply( m ) {\n\n\t\treturn this.multiplyMatrices( this, m );\n\n\t}\n\n\tpremultiply( m ) {\n\n\t\treturn this.multiplyMatrices( m, this );\n\n\t}\n\n\tmultiplyMatrices( a, b ) {\n\n\t\tconst ae = a.elements;\n\t\tconst be = b.elements;\n\t\tconst te = this.elements;\n\n\t\tconst a11 = ae[ 0 ], a12 = ae[ 4 ], a13 = ae[ 8 ], a14 = ae[ 12 ];\n\t\tconst a21 = ae[ 1 ], a22 = ae[ 5 ], a23 = ae[ 9 ], a24 = ae[ 13 ];\n\t\tconst a31 = ae[ 2 ], a32 = ae[ 6 ], a33 = ae[ 10 ], a34 = ae[ 14 ];\n\t\tconst a41 = ae[ 3 ], a42 = ae[ 7 ], a43 = ae[ 11 ], a44 = ae[ 15 ];\n\n\t\tconst b11 = be[ 0 ], b12 = be[ 4 ], b13 = be[ 8 ], b14 = be[ 12 ];\n\t\tconst b21 = be[ 1 ], b22 = be[ 5 ], b23 = be[ 9 ], b24 = be[ 13 ];\n\t\tconst b31 = be[ 2 ], b32 = be[ 6 ], b33 = be[ 10 ], b34 = be[ 14 ];\n\t\tconst b41 = be[ 3 ], b42 = be[ 7 ], b43 = be[ 11 ], b44 = be[ 15 ];\n\n\t\tte[ 0 ] = a11 * b11 + a12 * b21 + a13 * b31 + a14 * b41;\n\t\tte[ 4 ] = a11 * b12 + a12 * b22 + a13 * b32 + a14 * b42;\n\t\tte[ 8 ] = a11 * b13 + a12 * b23 + a13 * b33 + a14 * b43;\n\t\tte[ 12 ] = a11 * b14 + a12 * b24 + a13 * b34 + a14 * b44;\n\n\t\tte[ 1 ] = a21 * b11 + a22 * b21 + a23 * b31 + a24 * b41;\n\t\tte[ 5 ] = a21 * b12 + a22 * b22 + a23 * b32 + a24 * b42;\n\t\tte[ 9 ] = a21 * b13 + a22 * b23 + a23 * b33 + a24 * b43;\n\t\tte[ 13 ] = a21 * b14 + a22 * b24 + a23 * b34 + a24 * b44;\n\n\t\tte[ 2 ] = a31 * b11 + a32 * b21 + a33 * b31 + a34 * b41;\n\t\tte[ 6 ] = a31 * b12 + a32 * b22 + a33 * b32 + a34 * b42;\n\t\tte[ 10 ] = a31 * b13 + a32 * b23 + a33 * b33 + a34 * b43;\n\t\tte[ 14 ] = a31 * b14 + a32 * b24 + a33 * b34 + a34 * b44;\n\n\t\tte[ 3 ] = a41 * b11 + a42 * b21 + a43 * b31 + a44 * b41;\n\t\tte[ 7 ] = a41 * b12 + a42 * b22 + a43 * b32 + a44 * b42;\n\t\tte[ 11 ] = a41 * b13 + a42 * b23 + a43 * b33 + a44 * b43;\n\t\tte[ 15 ] = a41 * b14 + a42 * b24 + a43 * b34 + a44 * b44;\n\n\t\treturn this;\n\n\t}\n\n\tmultiplyScalar( s ) {\n\n\t\tconst te = this.elements;\n\n\t\tte[ 0 ] *= s; te[ 4 ] *= s; te[ 8 ] *= s; te[ 12 ] *= s;\n\t\tte[ 1 ] *= s; te[ 5 ] *= s; te[ 9 ] *= s; te[ 13 ] *= s;\n\t\tte[ 2 ] *= s; te[ 6 ] *= s; te[ 10 ] *= s; te[ 14 ] *= s;\n\t\tte[ 3 ] *= s; te[ 7 ] *= s; te[ 11 ] *= s; te[ 15 ] *= s;\n\n\t\treturn this;\n\n\t}\n\n\tdeterminant() {\n\n\t\tconst te = this.elements;\n\n\t\tconst n11 = te[ 0 ], n12 = te[ 4 ], n13 = te[ 8 ], n14 = te[ 12 ];\n\t\tconst n21 = te[ 1 ], n22 = te[ 5 ], n23 = te[ 9 ], n24 = te[ 13 ];\n\t\tconst n31 = te[ 2 ], n32 = te[ 6 ], n33 = te[ 10 ], n34 = te[ 14 ];\n\t\tconst n41 = te[ 3 ], n42 = te[ 7 ], n43 = te[ 11 ], n44 = te[ 15 ];\n\n\t\t//TODO: make this more efficient\n\t\t//( based on http://www.euclideanspace.com/maths/algebra/matrix/functions/inverse/fourD/index.htm )\n\n\t\treturn (\n\t\t\tn41 * (\n\t\t\t\t+ n14 * n23 * n32\n\t\t\t\t - n13 * n24 * n32\n\t\t\t\t - n14 * n22 * n33\n\t\t\t\t + n12 * n24 * n33\n\t\t\t\t + n13 * n22 * n34\n\t\t\t\t - n12 * n23 * n34\n\t\t\t) +\n\t\t\tn42 * (\n\t\t\t\t+ n11 * n23 * n34\n\t\t\t\t - n11 * n24 * n33\n\t\t\t\t + n14 * n21 * n33\n\t\t\t\t - n13 * n21 * n34\n\t\t\t\t + n13 * n24 * n31\n\t\t\t\t - n14 * n23 * n31\n\t\t\t) +\n\t\t\tn43 * (\n\t\t\t\t+ n11 * n24 * n32\n\t\t\t\t - n11 * n22 * n34\n\t\t\t\t - n14 * n21 * n32\n\t\t\t\t + n12 * n21 * n34\n\t\t\t\t + n14 * n22 * n31\n\t\t\t\t - n12 * n24 * n31\n\t\t\t) +\n\t\t\tn44 * (\n\t\t\t\t- n13 * n22 * n31\n\t\t\t\t - n11 * n23 * n32\n\t\t\t\t + n11 * n22 * n33\n\t\t\t\t + n13 * n21 * n32\n\t\t\t\t - n12 * n21 * n33\n\t\t\t\t + n12 * n23 * n31\n\t\t\t)\n\n\t\t);\n\n\t}\n\n\ttranspose() {\n\n\t\tconst te = this.elements;\n\t\tlet tmp;\n\n\t\ttmp = te[ 1 ]; te[ 1 ] = te[ 4 ]; te[ 4 ] = tmp;\n\t\ttmp = te[ 2 ]; te[ 2 ] = te[ 8 ]; te[ 8 ] = tmp;\n\t\ttmp = te[ 6 ]; te[ 6 ] = te[ 9 ]; te[ 9 ] = tmp;\n\n\t\ttmp = te[ 3 ]; te[ 3 ] = te[ 12 ]; te[ 12 ] = tmp;\n\t\ttmp = te[ 7 ]; te[ 7 ] = te[ 13 ]; te[ 13 ] = tmp;\n\t\ttmp = te[ 11 ]; te[ 11 ] = te[ 14 ]; te[ 14 ] = tmp;\n\n\t\treturn this;\n\n\t}\n\n\tsetPosition( x, y, z ) {\n\n\t\tconst te = this.elements;\n\n\t\tif ( x.isVector3 ) {\n\n\t\t\tte[ 12 ] = x.x;\n\t\t\tte[ 13 ] = x.y;\n\t\t\tte[ 14 ] = x.z;\n\n\t\t} else {\n\n\t\t\tte[ 12 ] = x;\n\t\t\tte[ 13 ] = y;\n\t\t\tte[ 14 ] = z;\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tinvert() {\n\n\t\t// based on http://www.euclideanspace.com/maths/algebra/matrix/functions/inverse/fourD/index.htm\n\t\tconst te = this.elements,\n\n\t\t\tn11 = te[ 0 ], n21 = te[ 1 ], n31 = te[ 2 ], n41 = te[ 3 ],\n\t\t\tn12 = te[ 4 ], n22 = te[ 5 ], n32 = te[ 6 ], n42 = te[ 7 ],\n\t\t\tn13 = te[ 8 ], n23 = te[ 9 ], n33 = te[ 10 ], n43 = te[ 11 ],\n\t\t\tn14 = te[ 12 ], n24 = te[ 13 ], n34 = te[ 14 ], n44 = te[ 15 ],\n\n\t\t\tt11 = n23 * n34 * n42 - n24 * n33 * n42 + n24 * n32 * n43 - n22 * n34 * n43 - n23 * n32 * n44 + n22 * n33 * n44,\n\t\t\tt12 = n14 * n33 * n42 - n13 * n34 * n42 - n14 * n32 * n43 + n12 * n34 * n43 + n13 * n32 * n44 - n12 * n33 * n44,\n\t\t\tt13 = n13 * n24 * n42 - n14 * n23 * n42 + n14 * n22 * n43 - n12 * n24 * n43 - n13 * n22 * n44 + n12 * n23 * n44,\n\t\t\tt14 = n14 * n23 * n32 - n13 * n24 * n32 - n14 * n22 * n33 + n12 * n24 * n33 + n13 * n22 * n34 - n12 * n23 * n34;\n\n\t\tconst det = n11 * t11 + n21 * t12 + n31 * t13 + n41 * t14;\n\n\t\tif ( det === 0 ) return this.set( 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 );\n\n\t\tconst detInv = 1 / det;\n\n\t\tte[ 0 ] = t11 * detInv;\n\t\tte[ 1 ] = ( n24 * n33 * n41 - n23 * n34 * n41 - n24 * n31 * n43 + n21 * n34 * n43 + n23 * n31 * n44 - n21 * n33 * n44 ) * detInv;\n\t\tte[ 2 ] = ( n22 * n34 * n41 - n24 * n32 * n41 + n24 * n31 * n42 - n21 * n34 * n42 - n22 * n31 * n44 + n21 * n32 * n44 ) * detInv;\n\t\tte[ 3 ] = ( n23 * n32 * n41 - n22 * n33 * n41 - n23 * n31 * n42 + n21 * n33 * n42 + n22 * n31 * n43 - n21 * n32 * n43 ) * detInv;\n\n\t\tte[ 4 ] = t12 * detInv;\n\t\tte[ 5 ] = ( n13 * n34 * n41 - n14 * n33 * n41 + n14 * n31 * n43 - n11 * n34 * n43 - n13 * n31 * n44 + n11 * n33 * n44 ) * detInv;\n\t\tte[ 6 ] = ( n14 * n32 * n41 - n12 * n34 * n41 - n14 * n31 * n42 + n11 * n34 * n42 + n12 * n31 * n44 - n11 * n32 * n44 ) * detInv;\n\t\tte[ 7 ] = ( n12 * n33 * n41 - n13 * n32 * n41 + n13 * n31 * n42 - n11 * n33 * n42 - n12 * n31 * n43 + n11 * n32 * n43 ) * detInv;\n\n\t\tte[ 8 ] = t13 * detInv;\n\t\tte[ 9 ] = ( n14 * n23 * n41 - n13 * n24 * n41 - n14 * n21 * n43 + n11 * n24 * n43 + n13 * n21 * n44 - n11 * n23 * n44 ) * detInv;\n\t\tte[ 10 ] = ( n12 * n24 * n41 - n14 * n22 * n41 + n14 * n21 * n42 - n11 * n24 * n42 - n12 * n21 * n44 + n11 * n22 * n44 ) * detInv;\n\t\tte[ 11 ] = ( n13 * n22 * n41 - n12 * n23 * n41 - n13 * n21 * n42 + n11 * n23 * n42 + n12 * n21 * n43 - n11 * n22 * n43 ) * detInv;\n\n\t\tte[ 12 ] = t14 * detInv;\n\t\tte[ 13 ] = ( n13 * n24 * n31 - n14 * n23 * n31 + n14 * n21 * n33 - n11 * n24 * n33 - n13 * n21 * n34 + n11 * n23 * n34 ) * detInv;\n\t\tte[ 14 ] = ( n14 * n22 * n31 - n12 * n24 * n31 - n14 * n21 * n32 + n11 * n24 * n32 + n12 * n21 * n34 - n11 * n22 * n34 ) * detInv;\n\t\tte[ 15 ] = ( n12 * n23 * n31 - n13 * n22 * n31 + n13 * n21 * n32 - n11 * n23 * n32 - n12 * n21 * n33 + n11 * n22 * n33 ) * detInv;\n\n\t\treturn this;\n\n\t}\n\n\tscale( v ) {\n\n\t\tconst te = this.elements;\n\t\tconst x = v.x, y = v.y, z = v.z;\n\n\t\tte[ 0 ] *= x; te[ 4 ] *= y; te[ 8 ] *= z;\n\t\tte[ 1 ] *= x; te[ 5 ] *= y; te[ 9 ] *= z;\n\t\tte[ 2 ] *= x; te[ 6 ] *= y; te[ 10 ] *= z;\n\t\tte[ 3 ] *= x; te[ 7 ] *= y; te[ 11 ] *= z;\n\n\t\treturn this;\n\n\t}\n\n\tgetMaxScaleOnAxis() {\n\n\t\tconst te = this.elements;\n\n\t\tconst scaleXSq = te[ 0 ] * te[ 0 ] + te[ 1 ] * te[ 1 ] + te[ 2 ] * te[ 2 ];\n\t\tconst scaleYSq = te[ 4 ] * te[ 4 ] + te[ 5 ] * te[ 5 ] + te[ 6 ] * te[ 6 ];\n\t\tconst scaleZSq = te[ 8 ] * te[ 8 ] + te[ 9 ] * te[ 9 ] + te[ 10 ] * te[ 10 ];\n\n\t\treturn Math.sqrt( Math.max( scaleXSq, scaleYSq, scaleZSq ) );\n\n\t}\n\n\tmakeTranslation( x, y, z ) {\n\n\t\tif ( x.isVector3 ) {\n\n\t\t\tthis.set(\n\n\t\t\t\t1, 0, 0, x.x,\n\t\t\t\t0, 1, 0, x.y,\n\t\t\t\t0, 0, 1, x.z,\n\t\t\t\t0, 0, 0, 1\n\n\t\t\t);\n\n\t\t} else {\n\n\t\t\tthis.set(\n\n\t\t\t\t1, 0, 0, x,\n\t\t\t\t0, 1, 0, y,\n\t\t\t\t0, 0, 1, z,\n\t\t\t\t0, 0, 0, 1\n\n\t\t\t);\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tmakeRotationX( theta ) {\n\n\t\tconst c = Math.cos( theta ), s = Math.sin( theta );\n\n\t\tthis.set(\n\n\t\t\t1, 0, 0, 0,\n\t\t\t0, c, - s, 0,\n\t\t\t0, s, c, 0,\n\t\t\t0, 0, 0, 1\n\n\t\t);\n\n\t\treturn this;\n\n\t}\n\n\tmakeRotationY( theta ) {\n\n\t\tconst c = Math.cos( theta ), s = Math.sin( theta );\n\n\t\tthis.set(\n\n\t\t\t c, 0, s, 0,\n\t\t\t 0, 1, 0, 0,\n\t\t\t- s, 0, c, 0,\n\t\t\t 0, 0, 0, 1\n\n\t\t);\n\n\t\treturn this;\n\n\t}\n\n\tmakeRotationZ( theta ) {\n\n\t\tconst c = Math.cos( theta ), s = Math.sin( theta );\n\n\t\tthis.set(\n\n\t\t\tc, - s, 0, 0,\n\t\t\ts, c, 0, 0,\n\t\t\t0, 0, 1, 0,\n\t\t\t0, 0, 0, 1\n\n\t\t);\n\n\t\treturn this;\n\n\t}\n\n\tmakeRotationAxis( axis, angle ) {\n\n\t\t// Based on http://www.gamedev.net/reference/articles/article1199.asp\n\n\t\tconst c = Math.cos( angle );\n\t\tconst s = Math.sin( angle );\n\t\tconst t = 1 - c;\n\t\tconst x = axis.x, y = axis.y, z = axis.z;\n\t\tconst tx = t * x, ty = t * y;\n\n\t\tthis.set(\n\n\t\t\ttx * x + c, tx * y - s * z, tx * z + s * y, 0,\n\t\t\ttx * y + s * z, ty * y + c, ty * z - s * x, 0,\n\t\t\ttx * z - s * y, ty * z + s * x, t * z * z + c, 0,\n\t\t\t0, 0, 0, 1\n\n\t\t);\n\n\t\treturn this;\n\n\t}\n\n\tmakeScale( x, y, z ) {\n\n\t\tthis.set(\n\n\t\t\tx, 0, 0, 0,\n\t\t\t0, y, 0, 0,\n\t\t\t0, 0, z, 0,\n\t\t\t0, 0, 0, 1\n\n\t\t);\n\n\t\treturn this;\n\n\t}\n\n\tmakeShear( xy, xz, yx, yz, zx, zy ) {\n\n\t\tthis.set(\n\n\t\t\t1, yx, zx, 0,\n\t\t\txy, 1, zy, 0,\n\t\t\txz, yz, 1, 0,\n\t\t\t0, 0, 0, 1\n\n\t\t);\n\n\t\treturn this;\n\n\t}\n\n\tcompose( position, quaternion, scale ) {\n\n\t\tconst te = this.elements;\n\n\t\tconst x = quaternion._x, y = quaternion._y, z = quaternion._z, w = quaternion._w;\n\t\tconst x2 = x + x,\ty2 = y + y, z2 = z + z;\n\t\tconst xx = x * x2, xy = x * y2, xz = x * z2;\n\t\tconst yy = y * y2, yz = y * z2, zz = z * z2;\n\t\tconst wx = w * x2, wy = w * y2, wz = w * z2;\n\n\t\tconst sx = scale.x, sy = scale.y, sz = scale.z;\n\n\t\tte[ 0 ] = ( 1 - ( yy + zz ) ) * sx;\n\t\tte[ 1 ] = ( xy + wz ) * sx;\n\t\tte[ 2 ] = ( xz - wy ) * sx;\n\t\tte[ 3 ] = 0;\n\n\t\tte[ 4 ] = ( xy - wz ) * sy;\n\t\tte[ 5 ] = ( 1 - ( xx + zz ) ) * sy;\n\t\tte[ 6 ] = ( yz + wx ) * sy;\n\t\tte[ 7 ] = 0;\n\n\t\tte[ 8 ] = ( xz + wy ) * sz;\n\t\tte[ 9 ] = ( yz - wx ) * sz;\n\t\tte[ 10 ] = ( 1 - ( xx + yy ) ) * sz;\n\t\tte[ 11 ] = 0;\n\n\t\tte[ 12 ] = position.x;\n\t\tte[ 13 ] = position.y;\n\t\tte[ 14 ] = position.z;\n\t\tte[ 15 ] = 1;\n\n\t\treturn this;\n\n\t}\n\n\tdecompose( position, quaternion, scale ) {\n\n\t\tconst te = this.elements;\n\n\t\tlet sx = _v1$5.set( te[ 0 ], te[ 1 ], te[ 2 ] ).length();\n\t\tconst sy = _v1$5.set( te[ 4 ], te[ 5 ], te[ 6 ] ).length();\n\t\tconst sz = _v1$5.set( te[ 8 ], te[ 9 ], te[ 10 ] ).length();\n\n\t\t// if determine is negative, we need to invert one scale\n\t\tconst det = this.determinant();\n\t\tif ( det < 0 ) sx = - sx;\n\n\t\tposition.x = te[ 12 ];\n\t\tposition.y = te[ 13 ];\n\t\tposition.z = te[ 14 ];\n\n\t\t// scale the rotation part\n\t\t_m1$4.copy( this );\n\n\t\tconst invSX = 1 / sx;\n\t\tconst invSY = 1 / sy;\n\t\tconst invSZ = 1 / sz;\n\n\t\t_m1$4.elements[ 0 ] *= invSX;\n\t\t_m1$4.elements[ 1 ] *= invSX;\n\t\t_m1$4.elements[ 2 ] *= invSX;\n\n\t\t_m1$4.elements[ 4 ] *= invSY;\n\t\t_m1$4.elements[ 5 ] *= invSY;\n\t\t_m1$4.elements[ 6 ] *= invSY;\n\n\t\t_m1$4.elements[ 8 ] *= invSZ;\n\t\t_m1$4.elements[ 9 ] *= invSZ;\n\t\t_m1$4.elements[ 10 ] *= invSZ;\n\n\t\tquaternion.setFromRotationMatrix( _m1$4 );\n\n\t\tscale.x = sx;\n\t\tscale.y = sy;\n\t\tscale.z = sz;\n\n\t\treturn this;\n\n\t}\n\n\tmakePerspective( left, right, top, bottom, near, far, coordinateSystem = WebGLCoordinateSystem ) {\n\n\t\tconst te = this.elements;\n\t\tconst x = 2 * near / ( right - left );\n\t\tconst y = 2 * near / ( top - bottom );\n\n\t\tconst a = ( right + left ) / ( right - left );\n\t\tconst b = ( top + bottom ) / ( top - bottom );\n\n\t\tlet c, d;\n\n\t\tif ( coordinateSystem === WebGLCoordinateSystem ) {\n\n\t\t\tc = - ( far + near ) / ( far - near );\n\t\t\td = ( - 2 * far * near ) / ( far - near );\n\n\t\t} else if ( coordinateSystem === WebGPUCoordinateSystem ) {\n\n\t\t\tc = - far / ( far - near );\n\t\t\td = ( - far * near ) / ( far - near );\n\n\t\t} else {\n\n\t\t\tthrow new Error( 'THREE.Matrix4.makePerspective(): Invalid coordinate system: ' + coordinateSystem );\n\n\t\t}\n\n\t\tte[ 0 ] = x;\tte[ 4 ] = 0;\tte[ 8 ] = a; \tte[ 12 ] = 0;\n\t\tte[ 1 ] = 0;\tte[ 5 ] = y;\tte[ 9 ] = b; \tte[ 13 ] = 0;\n\t\tte[ 2 ] = 0;\tte[ 6 ] = 0;\tte[ 10 ] = c; \tte[ 14 ] = d;\n\t\tte[ 3 ] = 0;\tte[ 7 ] = 0;\tte[ 11 ] = - 1;\tte[ 15 ] = 0;\n\n\t\treturn this;\n\n\t}\n\n\tmakeOrthographic( left, right, top, bottom, near, far, coordinateSystem = WebGLCoordinateSystem ) {\n\n\t\tconst te = this.elements;\n\t\tconst w = 1.0 / ( right - left );\n\t\tconst h = 1.0 / ( top - bottom );\n\t\tconst p = 1.0 / ( far - near );\n\n\t\tconst x = ( right + left ) * w;\n\t\tconst y = ( top + bottom ) * h;\n\n\t\tlet z, zInv;\n\n\t\tif ( coordinateSystem === WebGLCoordinateSystem ) {\n\n\t\t\tz = ( far + near ) * p;\n\t\t\tzInv = - 2 * p;\n\n\t\t} else if ( coordinateSystem === WebGPUCoordinateSystem ) {\n\n\t\t\tz = near * p;\n\t\t\tzInv = - 1 * p;\n\n\t\t} else {\n\n\t\t\tthrow new Error( 'THREE.Matrix4.makeOrthographic(): Invalid coordinate system: ' + coordinateSystem );\n\n\t\t}\n\n\t\tte[ 0 ] = 2 * w;\tte[ 4 ] = 0;\t\tte[ 8 ] = 0; \t\tte[ 12 ] = - x;\n\t\tte[ 1 ] = 0; \t\tte[ 5 ] = 2 * h;\tte[ 9 ] = 0; \t\tte[ 13 ] = - y;\n\t\tte[ 2 ] = 0; \t\tte[ 6 ] = 0;\t\tte[ 10 ] = zInv;\tte[ 14 ] = - z;\n\t\tte[ 3 ] = 0; \t\tte[ 7 ] = 0;\t\tte[ 11 ] = 0;\t\tte[ 15 ] = 1;\n\n\t\treturn this;\n\n\t}\n\n\tequals( matrix ) {\n\n\t\tconst te = this.elements;\n\t\tconst me = matrix.elements;\n\n\t\tfor ( let i = 0; i < 16; i ++ ) {\n\n\t\t\tif ( te[ i ] !== me[ i ] ) return false;\n\n\t\t}\n\n\t\treturn true;\n\n\t}\n\n\tfromArray( array, offset = 0 ) {\n\n\t\tfor ( let i = 0; i < 16; i ++ ) {\n\n\t\t\tthis.elements[ i ] = array[ i + offset ];\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\ttoArray( array = [], offset = 0 ) {\n\n\t\tconst te = this.elements;\n\n\t\tarray[ offset ] = te[ 0 ];\n\t\tarray[ offset + 1 ] = te[ 1 ];\n\t\tarray[ offset + 2 ] = te[ 2 ];\n\t\tarray[ offset + 3 ] = te[ 3 ];\n\n\t\tarray[ offset + 4 ] = te[ 4 ];\n\t\tarray[ offset + 5 ] = te[ 5 ];\n\t\tarray[ offset + 6 ] = te[ 6 ];\n\t\tarray[ offset + 7 ] = te[ 7 ];\n\n\t\tarray[ offset + 8 ] = te[ 8 ];\n\t\tarray[ offset + 9 ] = te[ 9 ];\n\t\tarray[ offset + 10 ] = te[ 10 ];\n\t\tarray[ offset + 11 ] = te[ 11 ];\n\n\t\tarray[ offset + 12 ] = te[ 12 ];\n\t\tarray[ offset + 13 ] = te[ 13 ];\n\t\tarray[ offset + 14 ] = te[ 14 ];\n\t\tarray[ offset + 15 ] = te[ 15 ];\n\n\t\treturn array;\n\n\t}\n\n}\n\nconst _v1$5 = /*@__PURE__*/ new Vector3();\nconst _m1$4 = /*@__PURE__*/ new Matrix4();\nconst _zero = /*@__PURE__*/ new Vector3( 0, 0, 0 );\nconst _one = /*@__PURE__*/ new Vector3( 1, 1, 1 );\nconst _x = /*@__PURE__*/ new Vector3();\nconst _y = /*@__PURE__*/ new Vector3();\nconst _z = /*@__PURE__*/ new Vector3();\n\nconst _matrix$2 = /*@__PURE__*/ new Matrix4();\nconst _quaternion$3 = /*@__PURE__*/ new Quaternion();\n\nclass Euler {\n\n\tconstructor( x = 0, y = 0, z = 0, order = Euler.DEFAULT_ORDER ) {\n\n\t\tthis.isEuler = true;\n\n\t\tthis._x = x;\n\t\tthis._y = y;\n\t\tthis._z = z;\n\t\tthis._order = order;\n\n\t}\n\n\tget x() {\n\n\t\treturn this._x;\n\n\t}\n\n\tset x( value ) {\n\n\t\tthis._x = value;\n\t\tthis._onChangeCallback();\n\n\t}\n\n\tget y() {\n\n\t\treturn this._y;\n\n\t}\n\n\tset y( value ) {\n\n\t\tthis._y = value;\n\t\tthis._onChangeCallback();\n\n\t}\n\n\tget z() {\n\n\t\treturn this._z;\n\n\t}\n\n\tset z( value ) {\n\n\t\tthis._z = value;\n\t\tthis._onChangeCallback();\n\n\t}\n\n\tget order() {\n\n\t\treturn this._order;\n\n\t}\n\n\tset order( value ) {\n\n\t\tthis._order = value;\n\t\tthis._onChangeCallback();\n\n\t}\n\n\tset( x, y, z, order = this._order ) {\n\n\t\tthis._x = x;\n\t\tthis._y = y;\n\t\tthis._z = z;\n\t\tthis._order = order;\n\n\t\tthis._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor( this._x, this._y, this._z, this._order );\n\n\t}\n\n\tcopy( euler ) {\n\n\t\tthis._x = euler._x;\n\t\tthis._y = euler._y;\n\t\tthis._z = euler._z;\n\t\tthis._order = euler._order;\n\n\t\tthis._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\tsetFromRotationMatrix( m, order = this._order, update = true ) {\n\n\t\t// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)\n\n\t\tconst te = m.elements;\n\t\tconst m11 = te[ 0 ], m12 = te[ 4 ], m13 = te[ 8 ];\n\t\tconst m21 = te[ 1 ], m22 = te[ 5 ], m23 = te[ 9 ];\n\t\tconst m31 = te[ 2 ], m32 = te[ 6 ], m33 = te[ 10 ];\n\n\t\tswitch ( order ) {\n\n\t\t\tcase 'XYZ':\n\n\t\t\t\tthis._y = Math.asin( clamp( m13, - 1, 1 ) );\n\n\t\t\t\tif ( Math.abs( m13 ) < 0.9999999 ) {\n\n\t\t\t\t\tthis._x = Math.atan2( - m23, m33 );\n\t\t\t\t\tthis._z = Math.atan2( - m12, m11 );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tthis._x = Math.atan2( m32, m22 );\n\t\t\t\t\tthis._z = 0;\n\n\t\t\t\t}\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'YXZ':\n\n\t\t\t\tthis._x = Math.asin( - clamp( m23, - 1, 1 ) );\n\n\t\t\t\tif ( Math.abs( m23 ) < 0.9999999 ) {\n\n\t\t\t\t\tthis._y = Math.atan2( m13, m33 );\n\t\t\t\t\tthis._z = Math.atan2( m21, m22 );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tthis._y = Math.atan2( - m31, m11 );\n\t\t\t\t\tthis._z = 0;\n\n\t\t\t\t}\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'ZXY':\n\n\t\t\t\tthis._x = Math.asin( clamp( m32, - 1, 1 ) );\n\n\t\t\t\tif ( Math.abs( m32 ) < 0.9999999 ) {\n\n\t\t\t\t\tthis._y = Math.atan2( - m31, m33 );\n\t\t\t\t\tthis._z = Math.atan2( - m12, m22 );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tthis._y = 0;\n\t\t\t\t\tthis._z = Math.atan2( m21, m11 );\n\n\t\t\t\t}\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'ZYX':\n\n\t\t\t\tthis._y = Math.asin( - clamp( m31, - 1, 1 ) );\n\n\t\t\t\tif ( Math.abs( m31 ) < 0.9999999 ) {\n\n\t\t\t\t\tthis._x = Math.atan2( m32, m33 );\n\t\t\t\t\tthis._z = Math.atan2( m21, m11 );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tthis._x = 0;\n\t\t\t\t\tthis._z = Math.atan2( - m12, m22 );\n\n\t\t\t\t}\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'YZX':\n\n\t\t\t\tthis._z = Math.asin( clamp( m21, - 1, 1 ) );\n\n\t\t\t\tif ( Math.abs( m21 ) < 0.9999999 ) {\n\n\t\t\t\t\tthis._x = Math.atan2( - m23, m22 );\n\t\t\t\t\tthis._y = Math.atan2( - m31, m11 );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tthis._x = 0;\n\t\t\t\t\tthis._y = Math.atan2( m13, m33 );\n\n\t\t\t\t}\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'XZY':\n\n\t\t\t\tthis._z = Math.asin( - clamp( m12, - 1, 1 ) );\n\n\t\t\t\tif ( Math.abs( m12 ) < 0.9999999 ) {\n\n\t\t\t\t\tthis._x = Math.atan2( m32, m22 );\n\t\t\t\t\tthis._y = Math.atan2( m13, m11 );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tthis._x = Math.atan2( - m23, m33 );\n\t\t\t\t\tthis._y = 0;\n\n\t\t\t\t}\n\n\t\t\t\tbreak;\n\n\t\t\tdefault:\n\n\t\t\t\tconsole.warn( 'THREE.Euler: .setFromRotationMatrix() encountered an unknown order: ' + order );\n\n\t\t}\n\n\t\tthis._order = order;\n\n\t\tif ( update === true ) this._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\tsetFromQuaternion( q, order, update ) {\n\n\t\t_matrix$2.makeRotationFromQuaternion( q );\n\n\t\treturn this.setFromRotationMatrix( _matrix$2, order, update );\n\n\t}\n\n\tsetFromVector3( v, order = this._order ) {\n\n\t\treturn this.set( v.x, v.y, v.z, order );\n\n\t}\n\n\treorder( newOrder ) {\n\n\t\t// WARNING: this discards revolution information -bhouston\n\n\t\t_quaternion$3.setFromEuler( this );\n\n\t\treturn this.setFromQuaternion( _quaternion$3, newOrder );\n\n\t}\n\n\tequals( euler ) {\n\n\t\treturn ( euler._x === this._x ) && ( euler._y === this._y ) && ( euler._z === this._z ) && ( euler._order === this._order );\n\n\t}\n\n\tfromArray( array ) {\n\n\t\tthis._x = array[ 0 ];\n\t\tthis._y = array[ 1 ];\n\t\tthis._z = array[ 2 ];\n\t\tif ( array[ 3 ] !== undefined ) this._order = array[ 3 ];\n\n\t\tthis._onChangeCallback();\n\n\t\treturn this;\n\n\t}\n\n\ttoArray( array = [], offset = 0 ) {\n\n\t\tarray[ offset ] = this._x;\n\t\tarray[ offset + 1 ] = this._y;\n\t\tarray[ offset + 2 ] = this._z;\n\t\tarray[ offset + 3 ] = this._order;\n\n\t\treturn array;\n\n\t}\n\n\t_onChange( callback ) {\n\n\t\tthis._onChangeCallback = callback;\n\n\t\treturn this;\n\n\t}\n\n\t_onChangeCallback() {}\n\n\t*[ Symbol.iterator ]() {\n\n\t\tyield this._x;\n\t\tyield this._y;\n\t\tyield this._z;\n\t\tyield this._order;\n\n\t}\n\n}\n\nEuler.DEFAULT_ORDER = 'XYZ';\n\nclass Layers {\n\n\tconstructor() {\n\n\t\tthis.mask = 1 | 0;\n\n\t}\n\n\tset( channel ) {\n\n\t\tthis.mask = ( 1 << channel | 0 ) >>> 0;\n\n\t}\n\n\tenable( channel ) {\n\n\t\tthis.mask |= 1 << channel | 0;\n\n\t}\n\n\tenableAll() {\n\n\t\tthis.mask = 0xffffffff | 0;\n\n\t}\n\n\ttoggle( channel ) {\n\n\t\tthis.mask ^= 1 << channel | 0;\n\n\t}\n\n\tdisable( channel ) {\n\n\t\tthis.mask &= ~ ( 1 << channel | 0 );\n\n\t}\n\n\tdisableAll() {\n\n\t\tthis.mask = 0;\n\n\t}\n\n\ttest( layers ) {\n\n\t\treturn ( this.mask & layers.mask ) !== 0;\n\n\t}\n\n\tisEnabled( channel ) {\n\n\t\treturn ( this.mask & ( 1 << channel | 0 ) ) !== 0;\n\n\t}\n\n}\n\nlet _object3DId = 0;\n\nconst _v1$4 = /*@__PURE__*/ new Vector3();\nconst _q1 = /*@__PURE__*/ new Quaternion();\nconst _m1$3 = /*@__PURE__*/ new Matrix4();\nconst _target = /*@__PURE__*/ new Vector3();\n\nconst _position$3 = /*@__PURE__*/ new Vector3();\nconst _scale$2 = /*@__PURE__*/ new Vector3();\nconst _quaternion$2 = /*@__PURE__*/ new Quaternion();\n\nconst _xAxis = /*@__PURE__*/ new Vector3( 1, 0, 0 );\nconst _yAxis = /*@__PURE__*/ new Vector3( 0, 1, 0 );\nconst _zAxis = /*@__PURE__*/ new Vector3( 0, 0, 1 );\n\nconst _addedEvent = { type: 'added' };\nconst _removedEvent = { type: 'removed' };\n\nconst _childaddedEvent = { type: 'childadded', child: null };\nconst _childremovedEvent = { type: 'childremoved', child: null };\n\nclass Object3D extends EventDispatcher {\n\n\tconstructor() {\n\n\t\tsuper();\n\n\t\tthis.isObject3D = true;\n\n\t\tObject.defineProperty( this, 'id', { value: _object3DId ++ } );\n\n\t\tthis.uuid = generateUUID();\n\n\t\tthis.name = '';\n\t\tthis.type = 'Object3D';\n\n\t\tthis.parent = null;\n\t\tthis.children = [];\n\n\t\tthis.up = Object3D.DEFAULT_UP.clone();\n\n\t\tconst position = new Vector3();\n\t\tconst rotation = new Euler();\n\t\tconst quaternion = new Quaternion();\n\t\tconst scale = new Vector3( 1, 1, 1 );\n\n\t\tfunction onRotationChange() {\n\n\t\t\tquaternion.setFromEuler( rotation, false );\n\n\t\t}\n\n\t\tfunction onQuaternionChange() {\n\n\t\t\trotation.setFromQuaternion( quaternion, undefined, false );\n\n\t\t}\n\n\t\trotation._onChange( onRotationChange );\n\t\tquaternion._onChange( onQuaternionChange );\n\n\t\tObject.defineProperties( this, {\n\t\t\tposition: {\n\t\t\t\tconfigurable: true,\n\t\t\t\tenumerable: true,\n\t\t\t\tvalue: position\n\t\t\t},\n\t\t\trotation: {\n\t\t\t\tconfigurable: true,\n\t\t\t\tenumerable: true,\n\t\t\t\tvalue: rotation\n\t\t\t},\n\t\t\tquaternion: {\n\t\t\t\tconfigurable: true,\n\t\t\t\tenumerable: true,\n\t\t\t\tvalue: quaternion\n\t\t\t},\n\t\t\tscale: {\n\t\t\t\tconfigurable: true,\n\t\t\t\tenumerable: true,\n\t\t\t\tvalue: scale\n\t\t\t},\n\t\t\tmodelViewMatrix: {\n\t\t\t\tvalue: new Matrix4()\n\t\t\t},\n\t\t\tnormalMatrix: {\n\t\t\t\tvalue: new Matrix3()\n\t\t\t}\n\t\t} );\n\n\t\tthis.matrix = new Matrix4();\n\t\tthis.matrixWorld = new Matrix4();\n\n\t\tthis.matrixAutoUpdate = Object3D.DEFAULT_MATRIX_AUTO_UPDATE;\n\n\t\tthis.matrixWorldAutoUpdate = Object3D.DEFAULT_MATRIX_WORLD_AUTO_UPDATE; // checked by the renderer\n\t\tthis.matrixWorldNeedsUpdate = false;\n\n\t\tthis.layers = new Layers();\n\t\tthis.visible = true;\n\n\t\tthis.castShadow = false;\n\t\tthis.receiveShadow = false;\n\n\t\tthis.frustumCulled = true;\n\t\tthis.renderOrder = 0;\n\n\t\tthis.animations = [];\n\n\t\tthis.userData = {};\n\n\t}\n\n\tonBeforeShadow( /* renderer, object, camera, shadowCamera, geometry, depthMaterial, group */ ) {}\n\n\tonAfterShadow( /* renderer, object, camera, shadowCamera, geometry, depthMaterial, group */ ) {}\n\n\tonBeforeRender( /* renderer, scene, camera, geometry, material, group */ ) {}\n\n\tonAfterRender( /* renderer, scene, camera, geometry, material, group */ ) {}\n\n\tapplyMatrix4( matrix ) {\n\n\t\tif ( this.matrixAutoUpdate ) this.updateMatrix();\n\n\t\tthis.matrix.premultiply( matrix );\n\n\t\tthis.matrix.decompose( this.position, this.quaternion, this.scale );\n\n\t}\n\n\tapplyQuaternion( q ) {\n\n\t\tthis.quaternion.premultiply( q );\n\n\t\treturn this;\n\n\t}\n\n\tsetRotationFromAxisAngle( axis, angle ) {\n\n\t\t// assumes axis is normalized\n\n\t\tthis.quaternion.setFromAxisAngle( axis, angle );\n\n\t}\n\n\tsetRotationFromEuler( euler ) {\n\n\t\tthis.quaternion.setFromEuler( euler, true );\n\n\t}\n\n\tsetRotationFromMatrix( m ) {\n\n\t\t// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)\n\n\t\tthis.quaternion.setFromRotationMatrix( m );\n\n\t}\n\n\tsetRotationFromQuaternion( q ) {\n\n\t\t// assumes q is normalized\n\n\t\tthis.quaternion.copy( q );\n\n\t}\n\n\trotateOnAxis( axis, angle ) {\n\n\t\t// rotate object on axis in object space\n\t\t// axis is assumed to be normalized\n\n\t\t_q1.setFromAxisAngle( axis, angle );\n\n\t\tthis.quaternion.multiply( _q1 );\n\n\t\treturn this;\n\n\t}\n\n\trotateOnWorldAxis( axis, angle ) {\n\n\t\t// rotate object on axis in world space\n\t\t// axis is assumed to be normalized\n\t\t// method assumes no rotated parent\n\n\t\t_q1.setFromAxisAngle( axis, angle );\n\n\t\tthis.quaternion.premultiply( _q1 );\n\n\t\treturn this;\n\n\t}\n\n\trotateX( angle ) {\n\n\t\treturn this.rotateOnAxis( _xAxis, angle );\n\n\t}\n\n\trotateY( angle ) {\n\n\t\treturn this.rotateOnAxis( _yAxis, angle );\n\n\t}\n\n\trotateZ( angle ) {\n\n\t\treturn this.rotateOnAxis( _zAxis, angle );\n\n\t}\n\n\ttranslateOnAxis( axis, distance ) {\n\n\t\t// translate object by distance along axis in object space\n\t\t// axis is assumed to be normalized\n\n\t\t_v1$4.copy( axis ).applyQuaternion( this.quaternion );\n\n\t\tthis.position.add( _v1$4.multiplyScalar( distance ) );\n\n\t\treturn this;\n\n\t}\n\n\ttranslateX( distance ) {\n\n\t\treturn this.translateOnAxis( _xAxis, distance );\n\n\t}\n\n\ttranslateY( distance ) {\n\n\t\treturn this.translateOnAxis( _yAxis, distance );\n\n\t}\n\n\ttranslateZ( distance ) {\n\n\t\treturn this.translateOnAxis( _zAxis, distance );\n\n\t}\n\n\tlocalToWorld( vector ) {\n\n\t\tthis.updateWorldMatrix( true, false );\n\n\t\treturn vector.applyMatrix4( this.matrixWorld );\n\n\t}\n\n\tworldToLocal( vector ) {\n\n\t\tthis.updateWorldMatrix( true, false );\n\n\t\treturn vector.applyMatrix4( _m1$3.copy( this.matrixWorld ).invert() );\n\n\t}\n\n\tlookAt( x, y, z ) {\n\n\t\t// This method does not support objects having non-uniformly-scaled parent(s)\n\n\t\tif ( x.isVector3 ) {\n\n\t\t\t_target.copy( x );\n\n\t\t} else {\n\n\t\t\t_target.set( x, y, z );\n\n\t\t}\n\n\t\tconst parent = this.parent;\n\n\t\tthis.updateWorldMatrix( true, false );\n\n\t\t_position$3.setFromMatrixPosition( this.matrixWorld );\n\n\t\tif ( this.isCamera || this.isLight ) {\n\n\t\t\t_m1$3.lookAt( _position$3, _target, this.up );\n\n\t\t} else {\n\n\t\t\t_m1$3.lookAt( _target, _position$3, this.up );\n\n\t\t}\n\n\t\tthis.quaternion.setFromRotationMatrix( _m1$3 );\n\n\t\tif ( parent ) {\n\n\t\t\t_m1$3.extractRotation( parent.matrixWorld );\n\t\t\t_q1.setFromRotationMatrix( _m1$3 );\n\t\t\tthis.quaternion.premultiply( _q1.invert() );\n\n\t\t}\n\n\t}\n\n\tadd( object ) {\n\n\t\tif ( arguments.length > 1 ) {\n\n\t\t\tfor ( let i = 0; i < arguments.length; i ++ ) {\n\n\t\t\t\tthis.add( arguments[ i ] );\n\n\t\t\t}\n\n\t\t\treturn this;\n\n\t\t}\n\n\t\tif ( object === this ) {\n\n\t\t\tconsole.error( 'THREE.Object3D.add: object can\\'t be added as a child of itself.', object );\n\t\t\treturn this;\n\n\t\t}\n\n\t\tif ( object && object.isObject3D ) {\n\n\t\t\tobject.removeFromParent();\n\t\t\tobject.parent = this;\n\t\t\tthis.children.push( object );\n\n\t\t\tobject.dispatchEvent( _addedEvent );\n\n\t\t\t_childaddedEvent.child = object;\n\t\t\tthis.dispatchEvent( _childaddedEvent );\n\t\t\t_childaddedEvent.child = null;\n\n\t\t} else {\n\n\t\t\tconsole.error( 'THREE.Object3D.add: object not an instance of THREE.Object3D.', object );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tremove( object ) {\n\n\t\tif ( arguments.length > 1 ) {\n\n\t\t\tfor ( let i = 0; i < arguments.length; i ++ ) {\n\n\t\t\t\tthis.remove( arguments[ i ] );\n\n\t\t\t}\n\n\t\t\treturn this;\n\n\t\t}\n\n\t\tconst index = this.children.indexOf( object );\n\n\t\tif ( index !== - 1 ) {\n\n\t\t\tobject.parent = null;\n\t\t\tthis.children.splice( index, 1 );\n\n\t\t\tobject.dispatchEvent( _removedEvent );\n\n\t\t\t_childremovedEvent.child = object;\n\t\t\tthis.dispatchEvent( _childremovedEvent );\n\t\t\t_childremovedEvent.child = null;\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tremoveFromParent() {\n\n\t\tconst parent = this.parent;\n\n\t\tif ( parent !== null ) {\n\n\t\t\tparent.remove( this );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tclear() {\n\n\t\treturn this.remove( ... this.children );\n\n\t}\n\n\tattach( object ) {\n\n\t\t// adds object as a child of this, while maintaining the object's world transform\n\n\t\t// Note: This method does not support scene graphs having non-uniformly-scaled nodes(s)\n\n\t\tthis.updateWorldMatrix( true, false );\n\n\t\t_m1$3.copy( this.matrixWorld ).invert();\n\n\t\tif ( object.parent !== null ) {\n\n\t\t\tobject.parent.updateWorldMatrix( true, false );\n\n\t\t\t_m1$3.multiply( object.parent.matrixWorld );\n\n\t\t}\n\n\t\tobject.applyMatrix4( _m1$3 );\n\n\t\tobject.removeFromParent();\n\t\tobject.parent = this;\n\t\tthis.children.push( object );\n\n\t\tobject.updateWorldMatrix( false, true );\n\n\t\tobject.dispatchEvent( _addedEvent );\n\n\t\t_childaddedEvent.child = object;\n\t\tthis.dispatchEvent( _childaddedEvent );\n\t\t_childaddedEvent.child = null;\n\n\t\treturn this;\n\n\t}\n\n\tgetObjectById( id ) {\n\n\t\treturn this.getObjectByProperty( 'id', id );\n\n\t}\n\n\tgetObjectByName( name ) {\n\n\t\treturn this.getObjectByProperty( 'name', name );\n\n\t}\n\n\tgetObjectByProperty( name, value ) {\n\n\t\tif ( this[ name ] === value ) return this;\n\n\t\tfor ( let i = 0, l = this.children.length; i < l; i ++ ) {\n\n\t\t\tconst child = this.children[ i ];\n\t\t\tconst object = child.getObjectByProperty( name, value );\n\n\t\t\tif ( object !== undefined ) {\n\n\t\t\t\treturn object;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn undefined;\n\n\t}\n\n\tgetObjectsByProperty( name, value, result = [] ) {\n\n\t\tif ( this[ name ] === value ) result.push( this );\n\n\t\tconst children = this.children;\n\n\t\tfor ( let i = 0, l = children.length; i < l; i ++ ) {\n\n\t\t\tchildren[ i ].getObjectsByProperty( name, value, result );\n\n\t\t}\n\n\t\treturn result;\n\n\t}\n\n\tgetWorldPosition( target ) {\n\n\t\tthis.updateWorldMatrix( true, false );\n\n\t\treturn target.setFromMatrixPosition( this.matrixWorld );\n\n\t}\n\n\tgetWorldQuaternion( target ) {\n\n\t\tthis.updateWorldMatrix( true, false );\n\n\t\tthis.matrixWorld.decompose( _position$3, target, _scale$2 );\n\n\t\treturn target;\n\n\t}\n\n\tgetWorldScale( target ) {\n\n\t\tthis.updateWorldMatrix( true, false );\n\n\t\tthis.matrixWorld.decompose( _position$3, _quaternion$2, target );\n\n\t\treturn target;\n\n\t}\n\n\tgetWorldDirection( target ) {\n\n\t\tthis.updateWorldMatrix( true, false );\n\n\t\tconst e = this.matrixWorld.elements;\n\n\t\treturn target.set( e[ 8 ], e[ 9 ], e[ 10 ] ).normalize();\n\n\t}\n\n\traycast( /* raycaster, intersects */ ) {}\n\n\ttraverse( callback ) {\n\n\t\tcallback( this );\n\n\t\tconst children = this.children;\n\n\t\tfor ( let i = 0, l = children.length; i < l; i ++ ) {\n\n\t\t\tchildren[ i ].traverse( callback );\n\n\t\t}\n\n\t}\n\n\ttraverseVisible( callback ) {\n\n\t\tif ( this.visible === false ) return;\n\n\t\tcallback( this );\n\n\t\tconst children = this.children;\n\n\t\tfor ( let i = 0, l = children.length; i < l; i ++ ) {\n\n\t\t\tchildren[ i ].traverseVisible( callback );\n\n\t\t}\n\n\t}\n\n\ttraverseAncestors( callback ) {\n\n\t\tconst parent = this.parent;\n\n\t\tif ( parent !== null ) {\n\n\t\t\tcallback( parent );\n\n\t\t\tparent.traverseAncestors( callback );\n\n\t\t}\n\n\t}\n\n\tupdateMatrix() {\n\n\t\tthis.matrix.compose( this.position, this.quaternion, this.scale );\n\n\t\tthis.matrixWorldNeedsUpdate = true;\n\n\t}\n\n\tupdateMatrixWorld( force ) {\n\n\t\tif ( this.matrixAutoUpdate ) this.updateMatrix();\n\n\t\tif ( this.matrixWorldNeedsUpdate || force ) {\n\n\t\t\tif ( this.parent === null ) {\n\n\t\t\t\tthis.matrixWorld.copy( this.matrix );\n\n\t\t\t} else {\n\n\t\t\t\tthis.matrixWorld.multiplyMatrices( this.parent.matrixWorld, this.matrix );\n\n\t\t\t}\n\n\t\t\tthis.matrixWorldNeedsUpdate = false;\n\n\t\t\tforce = true;\n\n\t\t}\n\n\t\t// update children\n\n\t\tconst children = this.children;\n\n\t\tfor ( let i = 0, l = children.length; i < l; i ++ ) {\n\n\t\t\tconst child = children[ i ];\n\n\t\t\tif ( child.matrixWorldAutoUpdate === true || force === true ) {\n\n\t\t\t\tchild.updateMatrixWorld( force );\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\tupdateWorldMatrix( updateParents, updateChildren ) {\n\n\t\tconst parent = this.parent;\n\n\t\tif ( updateParents === true && parent !== null && parent.matrixWorldAutoUpdate === true ) {\n\n\t\t\tparent.updateWorldMatrix( true, false );\n\n\t\t}\n\n\t\tif ( this.matrixAutoUpdate ) this.updateMatrix();\n\n\t\tif ( this.parent === null ) {\n\n\t\t\tthis.matrixWorld.copy( this.matrix );\n\n\t\t} else {\n\n\t\t\tthis.matrixWorld.multiplyMatrices( this.parent.matrixWorld, this.matrix );\n\n\t\t}\n\n\t\t// update children\n\n\t\tif ( updateChildren === true ) {\n\n\t\t\tconst children = this.children;\n\n\t\t\tfor ( let i = 0, l = children.length; i < l; i ++ ) {\n\n\t\t\t\tconst child = children[ i ];\n\n\t\t\t\tif ( child.matrixWorldAutoUpdate === true ) {\n\n\t\t\t\t\tchild.updateWorldMatrix( false, true );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\ttoJSON( meta ) {\n\n\t\t// meta is a string when called from JSON.stringify\n\t\tconst isRootObject = ( meta === undefined || typeof meta === 'string' );\n\n\t\tconst output = {};\n\n\t\t// meta is a hash used to collect geometries, materials.\n\t\t// not providing it implies that this is the root object\n\t\t// being serialized.\n\t\tif ( isRootObject ) {\n\n\t\t\t// initialize meta obj\n\t\t\tmeta = {\n\t\t\t\tgeometries: {},\n\t\t\t\tmaterials: {},\n\t\t\t\ttextures: {},\n\t\t\t\timages: {},\n\t\t\t\tshapes: {},\n\t\t\t\tskeletons: {},\n\t\t\t\tanimations: {},\n\t\t\t\tnodes: {}\n\t\t\t};\n\n\t\t\toutput.metadata = {\n\t\t\t\tversion: 4.6,\n\t\t\t\ttype: 'Object',\n\t\t\t\tgenerator: 'Object3D.toJSON'\n\t\t\t};\n\n\t\t}\n\n\t\t// standard Object3D serialization\n\n\t\tconst object = {};\n\n\t\tobject.uuid = this.uuid;\n\t\tobject.type = this.type;\n\n\t\tif ( this.name !== '' ) object.name = this.name;\n\t\tif ( this.castShadow === true ) object.castShadow = true;\n\t\tif ( this.receiveShadow === true ) object.receiveShadow = true;\n\t\tif ( this.visible === false ) object.visible = false;\n\t\tif ( this.frustumCulled === false ) object.frustumCulled = false;\n\t\tif ( this.renderOrder !== 0 ) object.renderOrder = this.renderOrder;\n\t\tif ( Object.keys( this.userData ).length > 0 ) object.userData = this.userData;\n\n\t\tobject.layers = this.layers.mask;\n\t\tobject.matrix = this.matrix.toArray();\n\t\tobject.up = this.up.toArray();\n\n\t\tif ( this.matrixAutoUpdate === false ) object.matrixAutoUpdate = false;\n\n\t\t// object specific properties\n\n\t\tif ( this.isInstancedMesh ) {\n\n\t\t\tobject.type = 'InstancedMesh';\n\t\t\tobject.count = this.count;\n\t\t\tobject.instanceMatrix = this.instanceMatrix.toJSON();\n\t\t\tif ( this.instanceColor !== null ) object.instanceColor = this.instanceColor.toJSON();\n\n\t\t}\n\n\t\tif ( this.isBatchedMesh ) {\n\n\t\t\tobject.type = 'BatchedMesh';\n\t\t\tobject.perObjectFrustumCulled = this.perObjectFrustumCulled;\n\t\t\tobject.sortObjects = this.sortObjects;\n\n\t\t\tobject.drawRanges = this._drawRanges;\n\t\t\tobject.reservedRanges = this._reservedRanges;\n\n\t\t\tobject.visibility = this._visibility;\n\t\t\tobject.active = this._active;\n\t\t\tobject.bounds = this._bounds.map( bound => ( {\n\t\t\t\tboxInitialized: bound.boxInitialized,\n\t\t\t\tboxMin: bound.box.min.toArray(),\n\t\t\t\tboxMax: bound.box.max.toArray(),\n\n\t\t\t\tsphereInitialized: bound.sphereInitialized,\n\t\t\t\tsphereRadius: bound.sphere.radius,\n\t\t\t\tsphereCenter: bound.sphere.center.toArray()\n\t\t\t} ) );\n\n\t\t\tobject.maxGeometryCount = this._maxGeometryCount;\n\t\t\tobject.maxVertexCount = this._maxVertexCount;\n\t\t\tobject.maxIndexCount = this._maxIndexCount;\n\n\t\t\tobject.geometryInitialized = this._geometryInitialized;\n\t\t\tobject.geometryCount = this._geometryCount;\n\n\t\t\tobject.matricesTexture = this._matricesTexture.toJSON( meta );\n\n\t\t\tif ( this._colorsTexture !== null ) object.colorsTexture = this._colorsTexture.toJSON( meta );\n\n\t\t\tif ( this.boundingSphere !== null ) {\n\n\t\t\t\tobject.boundingSphere = {\n\t\t\t\t\tcenter: object.boundingSphere.center.toArray(),\n\t\t\t\t\tradius: object.boundingSphere.radius\n\t\t\t\t};\n\n\t\t\t}\n\n\t\t\tif ( this.boundingBox !== null ) {\n\n\t\t\t\tobject.boundingBox = {\n\t\t\t\t\tmin: object.boundingBox.min.toArray(),\n\t\t\t\t\tmax: object.boundingBox.max.toArray()\n\t\t\t\t};\n\n\t\t\t}\n\n\t\t}\n\n\t\t//\n\n\t\tfunction serialize( library, element ) {\n\n\t\t\tif ( library[ element.uuid ] === undefined ) {\n\n\t\t\t\tlibrary[ element.uuid ] = element.toJSON( meta );\n\n\t\t\t}\n\n\t\t\treturn element.uuid;\n\n\t\t}\n\n\t\tif ( this.isScene ) {\n\n\t\t\tif ( this.background ) {\n\n\t\t\t\tif ( this.background.isColor ) {\n\n\t\t\t\t\tobject.background = this.background.toJSON();\n\n\t\t\t\t} else if ( this.background.isTexture ) {\n\n\t\t\t\t\tobject.background = this.background.toJSON( meta ).uuid;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tif ( this.environment && this.environment.isTexture && this.environment.isRenderTargetTexture !== true ) {\n\n\t\t\t\tobject.environment = this.environment.toJSON( meta ).uuid;\n\n\t\t\t}\n\n\t\t} else if ( this.isMesh || this.isLine || this.isPoints ) {\n\n\t\t\tobject.geometry = serialize( meta.geometries, this.geometry );\n\n\t\t\tconst parameters = this.geometry.parameters;\n\n\t\t\tif ( parameters !== undefined && parameters.shapes !== undefined ) {\n\n\t\t\t\tconst shapes = parameters.shapes;\n\n\t\t\t\tif ( Array.isArray( shapes ) ) {\n\n\t\t\t\t\tfor ( let i = 0, l = shapes.length; i < l; i ++ ) {\n\n\t\t\t\t\t\tconst shape = shapes[ i ];\n\n\t\t\t\t\t\tserialize( meta.shapes, shape );\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\tserialize( meta.shapes, shapes );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( this.isSkinnedMesh ) {\n\n\t\t\tobject.bindMode = this.bindMode;\n\t\t\tobject.bindMatrix = this.bindMatrix.toArray();\n\n\t\t\tif ( this.skeleton !== undefined ) {\n\n\t\t\t\tserialize( meta.skeletons, this.skeleton );\n\n\t\t\t\tobject.skeleton = this.skeleton.uuid;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( this.material !== undefined ) {\n\n\t\t\tif ( Array.isArray( this.material ) ) {\n\n\t\t\t\tconst uuids = [];\n\n\t\t\t\tfor ( let i = 0, l = this.material.length; i < l; i ++ ) {\n\n\t\t\t\t\tuuids.push( serialize( meta.materials, this.material[ i ] ) );\n\n\t\t\t\t}\n\n\t\t\t\tobject.material = uuids;\n\n\t\t\t} else {\n\n\t\t\t\tobject.material = serialize( meta.materials, this.material );\n\n\t\t\t}\n\n\t\t}\n\n\t\t//\n\n\t\tif ( this.children.length > 0 ) {\n\n\t\t\tobject.children = [];\n\n\t\t\tfor ( let i = 0; i < this.children.length; i ++ ) {\n\n\t\t\t\tobject.children.push( this.children[ i ].toJSON( meta ).object );\n\n\t\t\t}\n\n\t\t}\n\n\t\t//\n\n\t\tif ( this.animations.length > 0 ) {\n\n\t\t\tobject.animations = [];\n\n\t\t\tfor ( let i = 0; i < this.animations.length; i ++ ) {\n\n\t\t\t\tconst animation = this.animations[ i ];\n\n\t\t\t\tobject.animations.push( serialize( meta.animations, animation ) );\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( isRootObject ) {\n\n\t\t\tconst geometries = extractFromCache( meta.geometries );\n\t\t\tconst materials = extractFromCache( meta.materials );\n\t\t\tconst textures = extractFromCache( meta.textures );\n\t\t\tconst images = extractFromCache( meta.images );\n\t\t\tconst shapes = extractFromCache( meta.shapes );\n\t\t\tconst skeletons = extractFromCache( meta.skeletons );\n\t\t\tconst animations = extractFromCache( meta.animations );\n\t\t\tconst nodes = extractFromCache( meta.nodes );\n\n\t\t\tif ( geometries.length > 0 ) output.geometries = geometries;\n\t\t\tif ( materials.length > 0 ) output.materials = materials;\n\t\t\tif ( textures.length > 0 ) output.textures = textures;\n\t\t\tif ( images.length > 0 ) output.images = images;\n\t\t\tif ( shapes.length > 0 ) output.shapes = shapes;\n\t\t\tif ( skeletons.length > 0 ) output.skeletons = skeletons;\n\t\t\tif ( animations.length > 0 ) output.animations = animations;\n\t\t\tif ( nodes.length > 0 ) output.nodes = nodes;\n\n\t\t}\n\n\t\toutput.object = object;\n\n\t\treturn output;\n\n\t\t// extract data from the cache hash\n\t\t// remove metadata on each item\n\t\t// and return as array\n\t\tfunction extractFromCache( cache ) {\n\n\t\t\tconst values = [];\n\t\t\tfor ( const key in cache ) {\n\n\t\t\t\tconst data = cache[ key ];\n\t\t\t\tdelete data.metadata;\n\t\t\t\tvalues.push( data );\n\n\t\t\t}\n\n\t\t\treturn values;\n\n\t\t}\n\n\t}\n\n\tclone( recursive ) {\n\n\t\treturn new this.constructor().copy( this, recursive );\n\n\t}\n\n\tcopy( source, recursive = true ) {\n\n\t\tthis.name = source.name;\n\n\t\tthis.up.copy( source.up );\n\n\t\tthis.position.copy( source.position );\n\t\tthis.rotation.order = source.rotation.order;\n\t\tthis.quaternion.copy( source.quaternion );\n\t\tthis.scale.copy( source.scale );\n\n\t\tthis.matrix.copy( source.matrix );\n\t\tthis.matrixWorld.copy( source.matrixWorld );\n\n\t\tthis.matrixAutoUpdate = source.matrixAutoUpdate;\n\n\t\tthis.matrixWorldAutoUpdate = source.matrixWorldAutoUpdate;\n\t\tthis.matrixWorldNeedsUpdate = source.matrixWorldNeedsUpdate;\n\n\t\tthis.layers.mask = source.layers.mask;\n\t\tthis.visible = source.visible;\n\n\t\tthis.castShadow = source.castShadow;\n\t\tthis.receiveShadow = source.receiveShadow;\n\n\t\tthis.frustumCulled = source.frustumCulled;\n\t\tthis.renderOrder = source.renderOrder;\n\n\t\tthis.animations = source.animations.slice();\n\n\t\tthis.userData = JSON.parse( JSON.stringify( source.userData ) );\n\n\t\tif ( recursive === true ) {\n\n\t\t\tfor ( let i = 0; i < source.children.length; i ++ ) {\n\n\t\t\t\tconst child = source.children[ i ];\n\t\t\t\tthis.add( child.clone() );\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n}\n\nObject3D.DEFAULT_UP = /*@__PURE__*/ new Vector3( 0, 1, 0 );\nObject3D.DEFAULT_MATRIX_AUTO_UPDATE = true;\nObject3D.DEFAULT_MATRIX_WORLD_AUTO_UPDATE = true;\n\nconst _v0$1 = /*@__PURE__*/ new Vector3();\nconst _v1$3 = /*@__PURE__*/ new Vector3();\nconst _v2$2 = /*@__PURE__*/ new Vector3();\nconst _v3$2 = /*@__PURE__*/ new Vector3();\n\nconst _vab = /*@__PURE__*/ new Vector3();\nconst _vac = /*@__PURE__*/ new Vector3();\nconst _vbc = /*@__PURE__*/ new Vector3();\nconst _vap = /*@__PURE__*/ new Vector3();\nconst _vbp = /*@__PURE__*/ new Vector3();\nconst _vcp = /*@__PURE__*/ new Vector3();\n\nclass Triangle {\n\n\tconstructor( a = new Vector3(), b = new Vector3(), c = new Vector3() ) {\n\n\t\tthis.a = a;\n\t\tthis.b = b;\n\t\tthis.c = c;\n\n\t}\n\n\tstatic getNormal( a, b, c, target ) {\n\n\t\ttarget.subVectors( c, b );\n\t\t_v0$1.subVectors( a, b );\n\t\ttarget.cross( _v0$1 );\n\n\t\tconst targetLengthSq = target.lengthSq();\n\t\tif ( targetLengthSq > 0 ) {\n\n\t\t\treturn target.multiplyScalar( 1 / Math.sqrt( targetLengthSq ) );\n\n\t\t}\n\n\t\treturn target.set( 0, 0, 0 );\n\n\t}\n\n\t// static/instance method to calculate barycentric coordinates\n\t// based on: http://www.blackpawn.com/texts/pointinpoly/default.html\n\tstatic getBarycoord( point, a, b, c, target ) {\n\n\t\t_v0$1.subVectors( c, a );\n\t\t_v1$3.subVectors( b, a );\n\t\t_v2$2.subVectors( point, a );\n\n\t\tconst dot00 = _v0$1.dot( _v0$1 );\n\t\tconst dot01 = _v0$1.dot( _v1$3 );\n\t\tconst dot02 = _v0$1.dot( _v2$2 );\n\t\tconst dot11 = _v1$3.dot( _v1$3 );\n\t\tconst dot12 = _v1$3.dot( _v2$2 );\n\n\t\tconst denom = ( dot00 * dot11 - dot01 * dot01 );\n\n\t\t// collinear or singular triangle\n\t\tif ( denom === 0 ) {\n\n\t\t\ttarget.set( 0, 0, 0 );\n\t\t\treturn null;\n\n\t\t}\n\n\t\tconst invDenom = 1 / denom;\n\t\tconst u = ( dot11 * dot02 - dot01 * dot12 ) * invDenom;\n\t\tconst v = ( dot00 * dot12 - dot01 * dot02 ) * invDenom;\n\n\t\t// barycentric coordinates must always sum to 1\n\t\treturn target.set( 1 - u - v, v, u );\n\n\t}\n\n\tstatic containsPoint( point, a, b, c ) {\n\n\t\t// if the triangle is degenerate then we can't contain a point\n\t\tif ( this.getBarycoord( point, a, b, c, _v3$2 ) === null ) {\n\n\t\t\treturn false;\n\n\t\t}\n\n\t\treturn ( _v3$2.x >= 0 ) && ( _v3$2.y >= 0 ) && ( ( _v3$2.x + _v3$2.y ) <= 1 );\n\n\t}\n\n\tstatic getInterpolation( point, p1, p2, p3, v1, v2, v3, target ) {\n\n\t\tif ( this.getBarycoord( point, p1, p2, p3, _v3$2 ) === null ) {\n\n\t\t\ttarget.x = 0;\n\t\t\ttarget.y = 0;\n\t\t\tif ( 'z' in target ) target.z = 0;\n\t\t\tif ( 'w' in target ) target.w = 0;\n\t\t\treturn null;\n\n\t\t}\n\n\t\ttarget.setScalar( 0 );\n\t\ttarget.addScaledVector( v1, _v3$2.x );\n\t\ttarget.addScaledVector( v2, _v3$2.y );\n\t\ttarget.addScaledVector( v3, _v3$2.z );\n\n\t\treturn target;\n\n\t}\n\n\tstatic isFrontFacing( a, b, c, direction ) {\n\n\t\t_v0$1.subVectors( c, b );\n\t\t_v1$3.subVectors( a, b );\n\n\t\t// strictly front facing\n\t\treturn ( _v0$1.cross( _v1$3 ).dot( direction ) < 0 ) ? true : false;\n\n\t}\n\n\tset( a, b, c ) {\n\n\t\tthis.a.copy( a );\n\t\tthis.b.copy( b );\n\t\tthis.c.copy( c );\n\n\t\treturn this;\n\n\t}\n\n\tsetFromPointsAndIndices( points, i0, i1, i2 ) {\n\n\t\tthis.a.copy( points[ i0 ] );\n\t\tthis.b.copy( points[ i1 ] );\n\t\tthis.c.copy( points[ i2 ] );\n\n\t\treturn this;\n\n\t}\n\n\tsetFromAttributeAndIndices( attribute, i0, i1, i2 ) {\n\n\t\tthis.a.fromBufferAttribute( attribute, i0 );\n\t\tthis.b.fromBufferAttribute( attribute, i1 );\n\t\tthis.c.fromBufferAttribute( attribute, i2 );\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n\tcopy( triangle ) {\n\n\t\tthis.a.copy( triangle.a );\n\t\tthis.b.copy( triangle.b );\n\t\tthis.c.copy( triangle.c );\n\n\t\treturn this;\n\n\t}\n\n\tgetArea() {\n\n\t\t_v0$1.subVectors( this.c, this.b );\n\t\t_v1$3.subVectors( this.a, this.b );\n\n\t\treturn _v0$1.cross( _v1$3 ).length() * 0.5;\n\n\t}\n\n\tgetMidpoint( target ) {\n\n\t\treturn target.addVectors( this.a, this.b ).add( this.c ).multiplyScalar( 1 / 3 );\n\n\t}\n\n\tgetNormal( target ) {\n\n\t\treturn Triangle.getNormal( this.a, this.b, this.c, target );\n\n\t}\n\n\tgetPlane( target ) {\n\n\t\treturn target.setFromCoplanarPoints( this.a, this.b, this.c );\n\n\t}\n\n\tgetBarycoord( point, target ) {\n\n\t\treturn Triangle.getBarycoord( point, this.a, this.b, this.c, target );\n\n\t}\n\n\tgetInterpolation( point, v1, v2, v3, target ) {\n\n\t\treturn Triangle.getInterpolation( point, this.a, this.b, this.c, v1, v2, v3, target );\n\n\t}\n\n\tcontainsPoint( point ) {\n\n\t\treturn Triangle.containsPoint( point, this.a, this.b, this.c );\n\n\t}\n\n\tisFrontFacing( direction ) {\n\n\t\treturn Triangle.isFrontFacing( this.a, this.b, this.c, direction );\n\n\t}\n\n\tintersectsBox( box ) {\n\n\t\treturn box.intersectsTriangle( this );\n\n\t}\n\n\tclosestPointToPoint( p, target ) {\n\n\t\tconst a = this.a, b = this.b, c = this.c;\n\t\tlet v, w;\n\n\t\t// algorithm thanks to Real-Time Collision Detection by Christer Ericson,\n\t\t// published by Morgan Kaufmann Publishers, (c) 2005 Elsevier Inc.,\n\t\t// under the accompanying license; see chapter 5.1.5 for detailed explanation.\n\t\t// basically, we're distinguishing which of the voronoi regions of the triangle\n\t\t// the point lies in with the minimum amount of redundant computation.\n\n\t\t_vab.subVectors( b, a );\n\t\t_vac.subVectors( c, a );\n\t\t_vap.subVectors( p, a );\n\t\tconst d1 = _vab.dot( _vap );\n\t\tconst d2 = _vac.dot( _vap );\n\t\tif ( d1 <= 0 && d2 <= 0 ) {\n\n\t\t\t// vertex region of A; barycentric coords (1, 0, 0)\n\t\t\treturn target.copy( a );\n\n\t\t}\n\n\t\t_vbp.subVectors( p, b );\n\t\tconst d3 = _vab.dot( _vbp );\n\t\tconst d4 = _vac.dot( _vbp );\n\t\tif ( d3 >= 0 && d4 <= d3 ) {\n\n\t\t\t// vertex region of B; barycentric coords (0, 1, 0)\n\t\t\treturn target.copy( b );\n\n\t\t}\n\n\t\tconst vc = d1 * d4 - d3 * d2;\n\t\tif ( vc <= 0 && d1 >= 0 && d3 <= 0 ) {\n\n\t\t\tv = d1 / ( d1 - d3 );\n\t\t\t// edge region of AB; barycentric coords (1-v, v, 0)\n\t\t\treturn target.copy( a ).addScaledVector( _vab, v );\n\n\t\t}\n\n\t\t_vcp.subVectors( p, c );\n\t\tconst d5 = _vab.dot( _vcp );\n\t\tconst d6 = _vac.dot( _vcp );\n\t\tif ( d6 >= 0 && d5 <= d6 ) {\n\n\t\t\t// vertex region of C; barycentric coords (0, 0, 1)\n\t\t\treturn target.copy( c );\n\n\t\t}\n\n\t\tconst vb = d5 * d2 - d1 * d6;\n\t\tif ( vb <= 0 && d2 >= 0 && d6 <= 0 ) {\n\n\t\t\tw = d2 / ( d2 - d6 );\n\t\t\t// edge region of AC; barycentric coords (1-w, 0, w)\n\t\t\treturn target.copy( a ).addScaledVector( _vac, w );\n\n\t\t}\n\n\t\tconst va = d3 * d6 - d5 * d4;\n\t\tif ( va <= 0 && ( d4 - d3 ) >= 0 && ( d5 - d6 ) >= 0 ) {\n\n\t\t\t_vbc.subVectors( c, b );\n\t\t\tw = ( d4 - d3 ) / ( ( d4 - d3 ) + ( d5 - d6 ) );\n\t\t\t// edge region of BC; barycentric coords (0, 1-w, w)\n\t\t\treturn target.copy( b ).addScaledVector( _vbc, w ); // edge region of BC\n\n\t\t}\n\n\t\t// face region\n\t\tconst denom = 1 / ( va + vb + vc );\n\t\t// u = va * denom\n\t\tv = vb * denom;\n\t\tw = vc * denom;\n\n\t\treturn target.copy( a ).addScaledVector( _vab, v ).addScaledVector( _vac, w );\n\n\t}\n\n\tequals( triangle ) {\n\n\t\treturn triangle.a.equals( this.a ) && triangle.b.equals( this.b ) && triangle.c.equals( this.c );\n\n\t}\n\n}\n\nconst _colorKeywords = { 'aliceblue': 0xF0F8FF, 'antiquewhite': 0xFAEBD7, 'aqua': 0x00FFFF, 'aquamarine': 0x7FFFD4, 'azure': 0xF0FFFF,\n\t'beige': 0xF5F5DC, 'bisque': 0xFFE4C4, 'black': 0x000000, 'blanchedalmond': 0xFFEBCD, 'blue': 0x0000FF, 'blueviolet': 0x8A2BE2,\n\t'brown': 0xA52A2A, 'burlywood': 0xDEB887, 'cadetblue': 0x5F9EA0, 'chartreuse': 0x7FFF00, 'chocolate': 0xD2691E, 'coral': 0xFF7F50,\n\t'cornflowerblue': 0x6495ED, 'cornsilk': 0xFFF8DC, 'crimson': 0xDC143C, 'cyan': 0x00FFFF, 'darkblue': 0x00008B, 'darkcyan': 0x008B8B,\n\t'darkgoldenrod': 0xB8860B, 'darkgray': 0xA9A9A9, 'darkgreen': 0x006400, 'darkgrey': 0xA9A9A9, 'darkkhaki': 0xBDB76B, 'darkmagenta': 0x8B008B,\n\t'darkolivegreen': 0x556B2F, 'darkorange': 0xFF8C00, 'darkorchid': 0x9932CC, 'darkred': 0x8B0000, 'darksalmon': 0xE9967A, 'darkseagreen': 0x8FBC8F,\n\t'darkslateblue': 0x483D8B, 'darkslategray': 0x2F4F4F, 'darkslategrey': 0x2F4F4F, 'darkturquoise': 0x00CED1, 'darkviolet': 0x9400D3,\n\t'deeppink': 0xFF1493, 'deepskyblue': 0x00BFFF, 'dimgray': 0x696969, 'dimgrey': 0x696969, 'dodgerblue': 0x1E90FF, 'firebrick': 0xB22222,\n\t'floralwhite': 0xFFFAF0, 'forestgreen': 0x228B22, 'fuchsia': 0xFF00FF, 'gainsboro': 0xDCDCDC, 'ghostwhite': 0xF8F8FF, 'gold': 0xFFD700,\n\t'goldenrod': 0xDAA520, 'gray': 0x808080, 'green': 0x008000, 'greenyellow': 0xADFF2F, 'grey': 0x808080, 'honeydew': 0xF0FFF0, 'hotpink': 0xFF69B4,\n\t'indianred': 0xCD5C5C, 'indigo': 0x4B0082, 'ivory': 0xFFFFF0, 'khaki': 0xF0E68C, 'lavender': 0xE6E6FA, 'lavenderblush': 0xFFF0F5, 'lawngreen': 0x7CFC00,\n\t'lemonchiffon': 0xFFFACD, 'lightblue': 0xADD8E6, 'lightcoral': 0xF08080, 'lightcyan': 0xE0FFFF, 'lightgoldenrodyellow': 0xFAFAD2, 'lightgray': 0xD3D3D3,\n\t'lightgreen': 0x90EE90, 'lightgrey': 0xD3D3D3, 'lightpink': 0xFFB6C1, 'lightsalmon': 0xFFA07A, 'lightseagreen': 0x20B2AA, 'lightskyblue': 0x87CEFA,\n\t'lightslategray': 0x778899, 'lightslategrey': 0x778899, 'lightsteelblue': 0xB0C4DE, 'lightyellow': 0xFFFFE0, 'lime': 0x00FF00, 'limegreen': 0x32CD32,\n\t'linen': 0xFAF0E6, 'magenta': 0xFF00FF, 'maroon': 0x800000, 'mediumaquamarine': 0x66CDAA, 'mediumblue': 0x0000CD, 'mediumorchid': 0xBA55D3,\n\t'mediumpurple': 0x9370DB, 'mediumseagreen': 0x3CB371, 'mediumslateblue': 0x7B68EE, 'mediumspringgreen': 0x00FA9A, 'mediumturquoise': 0x48D1CC,\n\t'mediumvioletred': 0xC71585, 'midnightblue': 0x191970, 'mintcream': 0xF5FFFA, 'mistyrose': 0xFFE4E1, 'moccasin': 0xFFE4B5, 'navajowhite': 0xFFDEAD,\n\t'navy': 0x000080, 'oldlace': 0xFDF5E6, 'olive': 0x808000, 'olivedrab': 0x6B8E23, 'orange': 0xFFA500, 'orangered': 0xFF4500, 'orchid': 0xDA70D6,\n\t'palegoldenrod': 0xEEE8AA, 'palegreen': 0x98FB98, 'paleturquoise': 0xAFEEEE, 'palevioletred': 0xDB7093, 'papayawhip': 0xFFEFD5, 'peachpuff': 0xFFDAB9,\n\t'peru': 0xCD853F, 'pink': 0xFFC0CB, 'plum': 0xDDA0DD, 'powderblue': 0xB0E0E6, 'purple': 0x800080, 'rebeccapurple': 0x663399, 'red': 0xFF0000, 'rosybrown': 0xBC8F8F,\n\t'royalblue': 0x4169E1, 'saddlebrown': 0x8B4513, 'salmon': 0xFA8072, 'sandybrown': 0xF4A460, 'seagreen': 0x2E8B57, 'seashell': 0xFFF5EE,\n\t'sienna': 0xA0522D, 'silver': 0xC0C0C0, 'skyblue': 0x87CEEB, 'slateblue': 0x6A5ACD, 'slategray': 0x708090, 'slategrey': 0x708090, 'snow': 0xFFFAFA,\n\t'springgreen': 0x00FF7F, 'steelblue': 0x4682B4, 'tan': 0xD2B48C, 'teal': 0x008080, 'thistle': 0xD8BFD8, 'tomato': 0xFF6347, 'turquoise': 0x40E0D0,\n\t'violet': 0xEE82EE, 'wheat': 0xF5DEB3, 'white': 0xFFFFFF, 'whitesmoke': 0xF5F5F5, 'yellow': 0xFFFF00, 'yellowgreen': 0x9ACD32 };\n\nconst _hslA = { h: 0, s: 0, l: 0 };\nconst _hslB = { h: 0, s: 0, l: 0 };\n\nfunction hue2rgb( p, q, t ) {\n\n\tif ( t < 0 ) t += 1;\n\tif ( t > 1 ) t -= 1;\n\tif ( t < 1 / 6 ) return p + ( q - p ) * 6 * t;\n\tif ( t < 1 / 2 ) return q;\n\tif ( t < 2 / 3 ) return p + ( q - p ) * 6 * ( 2 / 3 - t );\n\treturn p;\n\n}\n\nclass Color {\n\n\tconstructor( r, g, b ) {\n\n\t\tthis.isColor = true;\n\n\t\tthis.r = 1;\n\t\tthis.g = 1;\n\t\tthis.b = 1;\n\n\t\treturn this.set( r, g, b );\n\n\t}\n\n\tset( r, g, b ) {\n\n\t\tif ( g === undefined && b === undefined ) {\n\n\t\t\t// r is THREE.Color, hex or string\n\n\t\t\tconst value = r;\n\n\t\t\tif ( value && value.isColor ) {\n\n\t\t\t\tthis.copy( value );\n\n\t\t\t} else if ( typeof value === 'number' ) {\n\n\t\t\t\tthis.setHex( value );\n\n\t\t\t} else if ( typeof value === 'string' ) {\n\n\t\t\t\tthis.setStyle( value );\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tthis.setRGB( r, g, b );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tsetScalar( scalar ) {\n\n\t\tthis.r = scalar;\n\t\tthis.g = scalar;\n\t\tthis.b = scalar;\n\n\t\treturn this;\n\n\t}\n\n\tsetHex( hex, colorSpace = SRGBColorSpace ) {\n\n\t\thex = Math.floor( hex );\n\n\t\tthis.r = ( hex >> 16 & 255 ) / 255;\n\t\tthis.g = ( hex >> 8 & 255 ) / 255;\n\t\tthis.b = ( hex & 255 ) / 255;\n\n\t\tColorManagement.toWorkingColorSpace( this, colorSpace );\n\n\t\treturn this;\n\n\t}\n\n\tsetRGB( r, g, b, colorSpace = ColorManagement.workingColorSpace ) {\n\n\t\tthis.r = r;\n\t\tthis.g = g;\n\t\tthis.b = b;\n\n\t\tColorManagement.toWorkingColorSpace( this, colorSpace );\n\n\t\treturn this;\n\n\t}\n\n\tsetHSL( h, s, l, colorSpace = ColorManagement.workingColorSpace ) {\n\n\t\t// h,s,l ranges are in 0.0 - 1.0\n\t\th = euclideanModulo( h, 1 );\n\t\ts = clamp( s, 0, 1 );\n\t\tl = clamp( l, 0, 1 );\n\n\t\tif ( s === 0 ) {\n\n\t\t\tthis.r = this.g = this.b = l;\n\n\t\t} else {\n\n\t\t\tconst p = l <= 0.5 ? l * ( 1 + s ) : l + s - ( l * s );\n\t\t\tconst q = ( 2 * l ) - p;\n\n\t\t\tthis.r = hue2rgb( q, p, h + 1 / 3 );\n\t\t\tthis.g = hue2rgb( q, p, h );\n\t\t\tthis.b = hue2rgb( q, p, h - 1 / 3 );\n\n\t\t}\n\n\t\tColorManagement.toWorkingColorSpace( this, colorSpace );\n\n\t\treturn this;\n\n\t}\n\n\tsetStyle( style, colorSpace = SRGBColorSpace ) {\n\n\t\tfunction handleAlpha( string ) {\n\n\t\t\tif ( string === undefined ) return;\n\n\t\t\tif ( parseFloat( string ) < 1 ) {\n\n\t\t\t\tconsole.warn( 'THREE.Color: Alpha component of ' + style + ' will be ignored.' );\n\n\t\t\t}\n\n\t\t}\n\n\n\t\tlet m;\n\n\t\tif ( m = /^(\\w+)\\(([^\\)]*)\\)/.exec( style ) ) {\n\n\t\t\t// rgb / hsl\n\n\t\t\tlet color;\n\t\t\tconst name = m[ 1 ];\n\t\t\tconst components = m[ 2 ];\n\n\t\t\tswitch ( name ) {\n\n\t\t\t\tcase 'rgb':\n\t\t\t\tcase 'rgba':\n\n\t\t\t\t\tif ( color = /^\\s*(\\d+)\\s*,\\s*(\\d+)\\s*,\\s*(\\d+)\\s*(?:,\\s*(\\d*\\.?\\d+)\\s*)?$/.exec( components ) ) {\n\n\t\t\t\t\t\t// rgb(255,0,0) rgba(255,0,0,0.5)\n\n\t\t\t\t\t\thandleAlpha( color[ 4 ] );\n\n\t\t\t\t\t\treturn this.setRGB(\n\t\t\t\t\t\t\tMath.min( 255, parseInt( color[ 1 ], 10 ) ) / 255,\n\t\t\t\t\t\t\tMath.min( 255, parseInt( color[ 2 ], 10 ) ) / 255,\n\t\t\t\t\t\t\tMath.min( 255, parseInt( color[ 3 ], 10 ) ) / 255,\n\t\t\t\t\t\t\tcolorSpace\n\t\t\t\t\t\t);\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( color = /^\\s*(\\d+)\\%\\s*,\\s*(\\d+)\\%\\s*,\\s*(\\d+)\\%\\s*(?:,\\s*(\\d*\\.?\\d+)\\s*)?$/.exec( components ) ) {\n\n\t\t\t\t\t\t// rgb(100%,0%,0%) rgba(100%,0%,0%,0.5)\n\n\t\t\t\t\t\thandleAlpha( color[ 4 ] );\n\n\t\t\t\t\t\treturn this.setRGB(\n\t\t\t\t\t\t\tMath.min( 100, parseInt( color[ 1 ], 10 ) ) / 100,\n\t\t\t\t\t\t\tMath.min( 100, parseInt( color[ 2 ], 10 ) ) / 100,\n\t\t\t\t\t\t\tMath.min( 100, parseInt( color[ 3 ], 10 ) ) / 100,\n\t\t\t\t\t\t\tcolorSpace\n\t\t\t\t\t\t);\n\n\t\t\t\t\t}\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 'hsl':\n\t\t\t\tcase 'hsla':\n\n\t\t\t\t\tif ( color = /^\\s*(\\d*\\.?\\d+)\\s*,\\s*(\\d*\\.?\\d+)\\%\\s*,\\s*(\\d*\\.?\\d+)\\%\\s*(?:,\\s*(\\d*\\.?\\d+)\\s*)?$/.exec( components ) ) {\n\n\t\t\t\t\t\t// hsl(120,50%,50%) hsla(120,50%,50%,0.5)\n\n\t\t\t\t\t\thandleAlpha( color[ 4 ] );\n\n\t\t\t\t\t\treturn this.setHSL(\n\t\t\t\t\t\t\tparseFloat( color[ 1 ] ) / 360,\n\t\t\t\t\t\t\tparseFloat( color[ 2 ] ) / 100,\n\t\t\t\t\t\t\tparseFloat( color[ 3 ] ) / 100,\n\t\t\t\t\t\t\tcolorSpace\n\t\t\t\t\t\t);\n\n\t\t\t\t\t}\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tdefault:\n\n\t\t\t\t\tconsole.warn( 'THREE.Color: Unknown color model ' + style );\n\n\t\t\t}\n\n\t\t} else if ( m = /^\\#([A-Fa-f\\d]+)$/.exec( style ) ) {\n\n\t\t\t// hex color\n\n\t\t\tconst hex = m[ 1 ];\n\t\t\tconst size = hex.length;\n\n\t\t\tif ( size === 3 ) {\n\n\t\t\t\t// #ff0\n\t\t\t\treturn this.setRGB(\n\t\t\t\t\tparseInt( hex.charAt( 0 ), 16 ) / 15,\n\t\t\t\t\tparseInt( hex.charAt( 1 ), 16 ) / 15,\n\t\t\t\t\tparseInt( hex.charAt( 2 ), 16 ) / 15,\n\t\t\t\t\tcolorSpace\n\t\t\t\t);\n\n\t\t\t} else if ( size === 6 ) {\n\n\t\t\t\t// #ff0000\n\t\t\t\treturn this.setHex( parseInt( hex, 16 ), colorSpace );\n\n\t\t\t} else {\n\n\t\t\t\tconsole.warn( 'THREE.Color: Invalid hex color ' + style );\n\n\t\t\t}\n\n\t\t} else if ( style && style.length > 0 ) {\n\n\t\t\treturn this.setColorName( style, colorSpace );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tsetColorName( style, colorSpace = SRGBColorSpace ) {\n\n\t\t// color keywords\n\t\tconst hex = _colorKeywords[ style.toLowerCase() ];\n\n\t\tif ( hex !== undefined ) {\n\n\t\t\t// red\n\t\t\tthis.setHex( hex, colorSpace );\n\n\t\t} else {\n\n\t\t\t// unknown color\n\t\t\tconsole.warn( 'THREE.Color: Unknown color ' + style );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor( this.r, this.g, this.b );\n\n\t}\n\n\tcopy( color ) {\n\n\t\tthis.r = color.r;\n\t\tthis.g = color.g;\n\t\tthis.b = color.b;\n\n\t\treturn this;\n\n\t}\n\n\tcopySRGBToLinear( color ) {\n\n\t\tthis.r = SRGBToLinear( color.r );\n\t\tthis.g = SRGBToLinear( color.g );\n\t\tthis.b = SRGBToLinear( color.b );\n\n\t\treturn this;\n\n\t}\n\n\tcopyLinearToSRGB( color ) {\n\n\t\tthis.r = LinearToSRGB( color.r );\n\t\tthis.g = LinearToSRGB( color.g );\n\t\tthis.b = LinearToSRGB( color.b );\n\n\t\treturn this;\n\n\t}\n\n\tconvertSRGBToLinear() {\n\n\t\tthis.copySRGBToLinear( this );\n\n\t\treturn this;\n\n\t}\n\n\tconvertLinearToSRGB() {\n\n\t\tthis.copyLinearToSRGB( this );\n\n\t\treturn this;\n\n\t}\n\n\tgetHex( colorSpace = SRGBColorSpace ) {\n\n\t\tColorManagement.fromWorkingColorSpace( _color.copy( this ), colorSpace );\n\n\t\treturn Math.round( clamp( _color.r * 255, 0, 255 ) ) * 65536 + Math.round( clamp( _color.g * 255, 0, 255 ) ) * 256 + Math.round( clamp( _color.b * 255, 0, 255 ) );\n\n\t}\n\n\tgetHexString( colorSpace = SRGBColorSpace ) {\n\n\t\treturn ( '000000' + this.getHex( colorSpace ).toString( 16 ) ).slice( - 6 );\n\n\t}\n\n\tgetHSL( target, colorSpace = ColorManagement.workingColorSpace ) {\n\n\t\t// h,s,l ranges are in 0.0 - 1.0\n\n\t\tColorManagement.fromWorkingColorSpace( _color.copy( this ), colorSpace );\n\n\t\tconst r = _color.r, g = _color.g, b = _color.b;\n\n\t\tconst max = Math.max( r, g, b );\n\t\tconst min = Math.min( r, g, b );\n\n\t\tlet hue, saturation;\n\t\tconst lightness = ( min + max ) / 2.0;\n\n\t\tif ( min === max ) {\n\n\t\t\thue = 0;\n\t\t\tsaturation = 0;\n\n\t\t} else {\n\n\t\t\tconst delta = max - min;\n\n\t\t\tsaturation = lightness <= 0.5 ? delta / ( max + min ) : delta / ( 2 - max - min );\n\n\t\t\tswitch ( max ) {\n\n\t\t\t\tcase r: hue = ( g - b ) / delta + ( g < b ? 6 : 0 ); break;\n\t\t\t\tcase g: hue = ( b - r ) / delta + 2; break;\n\t\t\t\tcase b: hue = ( r - g ) / delta + 4; break;\n\n\t\t\t}\n\n\t\t\thue /= 6;\n\n\t\t}\n\n\t\ttarget.h = hue;\n\t\ttarget.s = saturation;\n\t\ttarget.l = lightness;\n\n\t\treturn target;\n\n\t}\n\n\tgetRGB( target, colorSpace = ColorManagement.workingColorSpace ) {\n\n\t\tColorManagement.fromWorkingColorSpace( _color.copy( this ), colorSpace );\n\n\t\ttarget.r = _color.r;\n\t\ttarget.g = _color.g;\n\t\ttarget.b = _color.b;\n\n\t\treturn target;\n\n\t}\n\n\tgetStyle( colorSpace = SRGBColorSpace ) {\n\n\t\tColorManagement.fromWorkingColorSpace( _color.copy( this ), colorSpace );\n\n\t\tconst r = _color.r, g = _color.g, b = _color.b;\n\n\t\tif ( colorSpace !== SRGBColorSpace ) {\n\n\t\t\t// Requires CSS Color Module Level 4 (https://www.w3.org/TR/css-color-4/).\n\t\t\treturn `color(${ colorSpace } ${ r.toFixed( 3 ) } ${ g.toFixed( 3 ) } ${ b.toFixed( 3 ) })`;\n\n\t\t}\n\n\t\treturn `rgb(${ Math.round( r * 255 ) },${ Math.round( g * 255 ) },${ Math.round( b * 255 ) })`;\n\n\t}\n\n\toffsetHSL( h, s, l ) {\n\n\t\tthis.getHSL( _hslA );\n\n\t\treturn this.setHSL( _hslA.h + h, _hslA.s + s, _hslA.l + l );\n\n\t}\n\n\tadd( color ) {\n\n\t\tthis.r += color.r;\n\t\tthis.g += color.g;\n\t\tthis.b += color.b;\n\n\t\treturn this;\n\n\t}\n\n\taddColors( color1, color2 ) {\n\n\t\tthis.r = color1.r + color2.r;\n\t\tthis.g = color1.g + color2.g;\n\t\tthis.b = color1.b + color2.b;\n\n\t\treturn this;\n\n\t}\n\n\taddScalar( s ) {\n\n\t\tthis.r += s;\n\t\tthis.g += s;\n\t\tthis.b += s;\n\n\t\treturn this;\n\n\t}\n\n\tsub( color ) {\n\n\t\tthis.r = Math.max( 0, this.r - color.r );\n\t\tthis.g = Math.max( 0, this.g - color.g );\n\t\tthis.b = Math.max( 0, this.b - color.b );\n\n\t\treturn this;\n\n\t}\n\n\tmultiply( color ) {\n\n\t\tthis.r *= color.r;\n\t\tthis.g *= color.g;\n\t\tthis.b *= color.b;\n\n\t\treturn this;\n\n\t}\n\n\tmultiplyScalar( s ) {\n\n\t\tthis.r *= s;\n\t\tthis.g *= s;\n\t\tthis.b *= s;\n\n\t\treturn this;\n\n\t}\n\n\tlerp( color, alpha ) {\n\n\t\tthis.r += ( color.r - this.r ) * alpha;\n\t\tthis.g += ( color.g - this.g ) * alpha;\n\t\tthis.b += ( color.b - this.b ) * alpha;\n\n\t\treturn this;\n\n\t}\n\n\tlerpColors( color1, color2, alpha ) {\n\n\t\tthis.r = color1.r + ( color2.r - color1.r ) * alpha;\n\t\tthis.g = color1.g + ( color2.g - color1.g ) * alpha;\n\t\tthis.b = color1.b + ( color2.b - color1.b ) * alpha;\n\n\t\treturn this;\n\n\t}\n\n\tlerpHSL( color, alpha ) {\n\n\t\tthis.getHSL( _hslA );\n\t\tcolor.getHSL( _hslB );\n\n\t\tconst h = lerp( _hslA.h, _hslB.h, alpha );\n\t\tconst s = lerp( _hslA.s, _hslB.s, alpha );\n\t\tconst l = lerp( _hslA.l, _hslB.l, alpha );\n\n\t\tthis.setHSL( h, s, l );\n\n\t\treturn this;\n\n\t}\n\n\tsetFromVector3( v ) {\n\n\t\tthis.r = v.x;\n\t\tthis.g = v.y;\n\t\tthis.b = v.z;\n\n\t\treturn this;\n\n\t}\n\n\tapplyMatrix3( m ) {\n\n\t\tconst r = this.r, g = this.g, b = this.b;\n\t\tconst e = m.elements;\n\n\t\tthis.r = e[ 0 ] * r + e[ 3 ] * g + e[ 6 ] * b;\n\t\tthis.g = e[ 1 ] * r + e[ 4 ] * g + e[ 7 ] * b;\n\t\tthis.b = e[ 2 ] * r + e[ 5 ] * g + e[ 8 ] * b;\n\n\t\treturn this;\n\n\t}\n\n\tequals( c ) {\n\n\t\treturn ( c.r === this.r ) && ( c.g === this.g ) && ( c.b === this.b );\n\n\t}\n\n\tfromArray( array, offset = 0 ) {\n\n\t\tthis.r = array[ offset ];\n\t\tthis.g = array[ offset + 1 ];\n\t\tthis.b = array[ offset + 2 ];\n\n\t\treturn this;\n\n\t}\n\n\ttoArray( array = [], offset = 0 ) {\n\n\t\tarray[ offset ] = this.r;\n\t\tarray[ offset + 1 ] = this.g;\n\t\tarray[ offset + 2 ] = this.b;\n\n\t\treturn array;\n\n\t}\n\n\tfromBufferAttribute( attribute, index ) {\n\n\t\tthis.r = attribute.getX( index );\n\t\tthis.g = attribute.getY( index );\n\t\tthis.b = attribute.getZ( index );\n\n\t\treturn this;\n\n\t}\n\n\ttoJSON() {\n\n\t\treturn this.getHex();\n\n\t}\n\n\t*[ Symbol.iterator ]() {\n\n\t\tyield this.r;\n\t\tyield this.g;\n\t\tyield this.b;\n\n\t}\n\n}\n\nconst _color = /*@__PURE__*/ new Color();\n\nColor.NAMES = _colorKeywords;\n\nlet _materialId = 0;\n\nclass Material extends EventDispatcher {\n\n\tconstructor() {\n\n\t\tsuper();\n\n\t\tthis.isMaterial = true;\n\n\t\tObject.defineProperty( this, 'id', { value: _materialId ++ } );\n\n\t\tthis.uuid = generateUUID();\n\n\t\tthis.name = '';\n\t\tthis.type = 'Material';\n\n\t\tthis.blending = NormalBlending;\n\t\tthis.side = FrontSide;\n\t\tthis.vertexColors = false;\n\n\t\tthis.opacity = 1;\n\t\tthis.transparent = false;\n\t\tthis.alphaHash = false;\n\n\t\tthis.blendSrc = SrcAlphaFactor;\n\t\tthis.blendDst = OneMinusSrcAlphaFactor;\n\t\tthis.blendEquation = AddEquation;\n\t\tthis.blendSrcAlpha = null;\n\t\tthis.blendDstAlpha = null;\n\t\tthis.blendEquationAlpha = null;\n\t\tthis.blendColor = new Color( 0, 0, 0 );\n\t\tthis.blendAlpha = 0;\n\n\t\tthis.depthFunc = LessEqualDepth;\n\t\tthis.depthTest = true;\n\t\tthis.depthWrite = true;\n\n\t\tthis.stencilWriteMask = 0xff;\n\t\tthis.stencilFunc = AlwaysStencilFunc;\n\t\tthis.stencilRef = 0;\n\t\tthis.stencilFuncMask = 0xff;\n\t\tthis.stencilFail = KeepStencilOp;\n\t\tthis.stencilZFail = KeepStencilOp;\n\t\tthis.stencilZPass = KeepStencilOp;\n\t\tthis.stencilWrite = false;\n\n\t\tthis.clippingPlanes = null;\n\t\tthis.clipIntersection = false;\n\t\tthis.clipShadows = false;\n\n\t\tthis.shadowSide = null;\n\n\t\tthis.colorWrite = true;\n\n\t\tthis.precision = null; // override the renderer's default precision for this material\n\n\t\tthis.polygonOffset = false;\n\t\tthis.polygonOffsetFactor = 0;\n\t\tthis.polygonOffsetUnits = 0;\n\n\t\tthis.dithering = false;\n\n\t\tthis.alphaToCoverage = false;\n\t\tthis.premultipliedAlpha = false;\n\t\tthis.forceSinglePass = false;\n\n\t\tthis.visible = true;\n\n\t\tthis.toneMapped = true;\n\n\t\tthis.userData = {};\n\n\t\tthis.version = 0;\n\n\t\tthis._alphaTest = 0;\n\n\t}\n\n\tget alphaTest() {\n\n\t\treturn this._alphaTest;\n\n\t}\n\n\tset alphaTest( value ) {\n\n\t\tif ( this._alphaTest > 0 !== value > 0 ) {\n\n\t\t\tthis.version ++;\n\n\t\t}\n\n\t\tthis._alphaTest = value;\n\n\t}\n\n\tonBuild( /* shaderobject, renderer */ ) {}\n\n\tonBeforeRender( /* renderer, scene, camera, geometry, object, group */ ) {}\n\n\tonBeforeCompile( /* shaderobject, renderer */ ) {}\n\n\tcustomProgramCacheKey() {\n\n\t\treturn this.onBeforeCompile.toString();\n\n\t}\n\n\tsetValues( values ) {\n\n\t\tif ( values === undefined ) return;\n\n\t\tfor ( const key in values ) {\n\n\t\t\tconst newValue = values[ key ];\n\n\t\t\tif ( newValue === undefined ) {\n\n\t\t\t\tconsole.warn( `THREE.Material: parameter '${ key }' has value of undefined.` );\n\t\t\t\tcontinue;\n\n\t\t\t}\n\n\t\t\tconst currentValue = this[ key ];\n\n\t\t\tif ( currentValue === undefined ) {\n\n\t\t\t\tconsole.warn( `THREE.Material: '${ key }' is not a property of THREE.${ this.type }.` );\n\t\t\t\tcontinue;\n\n\t\t\t}\n\n\t\t\tif ( currentValue && currentValue.isColor ) {\n\n\t\t\t\tcurrentValue.set( newValue );\n\n\t\t\t} else if ( ( currentValue && currentValue.isVector3 ) && ( newValue && newValue.isVector3 ) ) {\n\n\t\t\t\tcurrentValue.copy( newValue );\n\n\t\t\t} else {\n\n\t\t\t\tthis[ key ] = newValue;\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\ttoJSON( meta ) {\n\n\t\tconst isRootObject = ( meta === undefined || typeof meta === 'string' );\n\n\t\tif ( isRootObject ) {\n\n\t\t\tmeta = {\n\t\t\t\ttextures: {},\n\t\t\t\timages: {}\n\t\t\t};\n\n\t\t}\n\n\t\tconst data = {\n\t\t\tmetadata: {\n\t\t\t\tversion: 4.6,\n\t\t\t\ttype: 'Material',\n\t\t\t\tgenerator: 'Material.toJSON'\n\t\t\t}\n\t\t};\n\n\t\t// standard Material serialization\n\t\tdata.uuid = this.uuid;\n\t\tdata.type = this.type;\n\n\t\tif ( this.name !== '' ) data.name = this.name;\n\n\t\tif ( this.color && this.color.isColor ) data.color = this.color.getHex();\n\n\t\tif ( this.roughness !== undefined ) data.roughness = this.roughness;\n\t\tif ( this.metalness !== undefined ) data.metalness = this.metalness;\n\n\t\tif ( this.sheen !== undefined ) data.sheen = this.sheen;\n\t\tif ( this.sheenColor && this.sheenColor.isColor ) data.sheenColor = this.sheenColor.getHex();\n\t\tif ( this.sheenRoughness !== undefined ) data.sheenRoughness = this.sheenRoughness;\n\t\tif ( this.emissive && this.emissive.isColor ) data.emissive = this.emissive.getHex();\n\t\tif ( this.emissiveIntensity !== undefined && this.emissiveIntensity !== 1 ) data.emissiveIntensity = this.emissiveIntensity;\n\n\t\tif ( this.specular && this.specular.isColor ) data.specular = this.specular.getHex();\n\t\tif ( this.specularIntensity !== undefined ) data.specularIntensity = this.specularIntensity;\n\t\tif ( this.specularColor && this.specularColor.isColor ) data.specularColor = this.specularColor.getHex();\n\t\tif ( this.shininess !== undefined ) data.shininess = this.shininess;\n\t\tif ( this.clearcoat !== undefined ) data.clearcoat = this.clearcoat;\n\t\tif ( this.clearcoatRoughness !== undefined ) data.clearcoatRoughness = this.clearcoatRoughness;\n\n\t\tif ( this.clearcoatMap && this.clearcoatMap.isTexture ) {\n\n\t\t\tdata.clearcoatMap = this.clearcoatMap.toJSON( meta ).uuid;\n\n\t\t}\n\n\t\tif ( this.clearcoatRoughnessMap && this.clearcoatRoughnessMap.isTexture ) {\n\n\t\t\tdata.clearcoatRoughnessMap = this.clearcoatRoughnessMap.toJSON( meta ).uuid;\n\n\t\t}\n\n\t\tif ( this.clearcoatNormalMap && this.clearcoatNormalMap.isTexture ) {\n\n\t\t\tdata.clearcoatNormalMap = this.clearcoatNormalMap.toJSON( meta ).uuid;\n\t\t\tdata.clearcoatNormalScale = this.clearcoatNormalScale.toArray();\n\n\t\t}\n\n\t\tif ( this.dispersion !== undefined ) data.dispersion = this.dispersion;\n\n\t\tif ( this.iridescence !== undefined ) data.iridescence = this.iridescence;\n\t\tif ( this.iridescenceIOR !== undefined ) data.iridescenceIOR = this.iridescenceIOR;\n\t\tif ( this.iridescenceThicknessRange !== undefined ) data.iridescenceThicknessRange = this.iridescenceThicknessRange;\n\n\t\tif ( this.iridescenceMap && this.iridescenceMap.isTexture ) {\n\n\t\t\tdata.iridescenceMap = this.iridescenceMap.toJSON( meta ).uuid;\n\n\t\t}\n\n\t\tif ( this.iridescenceThicknessMap && this.iridescenceThicknessMap.isTexture ) {\n\n\t\t\tdata.iridescenceThicknessMap = this.iridescenceThicknessMap.toJSON( meta ).uuid;\n\n\t\t}\n\n\t\tif ( this.anisotropy !== undefined ) data.anisotropy = this.anisotropy;\n\t\tif ( this.anisotropyRotation !== undefined ) data.anisotropyRotation = this.anisotropyRotation;\n\n\t\tif ( this.anisotropyMap && this.anisotropyMap.isTexture ) {\n\n\t\t\tdata.anisotropyMap = this.anisotropyMap.toJSON( meta ).uuid;\n\n\t\t}\n\n\t\tif ( this.map && this.map.isTexture ) data.map = this.map.toJSON( meta ).uuid;\n\t\tif ( this.matcap && this.matcap.isTexture ) data.matcap = this.matcap.toJSON( meta ).uuid;\n\t\tif ( this.alphaMap && this.alphaMap.isTexture ) data.alphaMap = this.alphaMap.toJSON( meta ).uuid;\n\n\t\tif ( this.lightMap && this.lightMap.isTexture ) {\n\n\t\t\tdata.lightMap = this.lightMap.toJSON( meta ).uuid;\n\t\t\tdata.lightMapIntensity = this.lightMapIntensity;\n\n\t\t}\n\n\t\tif ( this.aoMap && this.aoMap.isTexture ) {\n\n\t\t\tdata.aoMap = this.aoMap.toJSON( meta ).uuid;\n\t\t\tdata.aoMapIntensity = this.aoMapIntensity;\n\n\t\t}\n\n\t\tif ( this.bumpMap && this.bumpMap.isTexture ) {\n\n\t\t\tdata.bumpMap = this.bumpMap.toJSON( meta ).uuid;\n\t\t\tdata.bumpScale = this.bumpScale;\n\n\t\t}\n\n\t\tif ( this.normalMap && this.normalMap.isTexture ) {\n\n\t\t\tdata.normalMap = this.normalMap.toJSON( meta ).uuid;\n\t\t\tdata.normalMapType = this.normalMapType;\n\t\t\tdata.normalScale = this.normalScale.toArray();\n\n\t\t}\n\n\t\tif ( this.displacementMap && this.displacementMap.isTexture ) {\n\n\t\t\tdata.displacementMap = this.displacementMap.toJSON( meta ).uuid;\n\t\t\tdata.displacementScale = this.displacementScale;\n\t\t\tdata.displacementBias = this.displacementBias;\n\n\t\t}\n\n\t\tif ( this.roughnessMap && this.roughnessMap.isTexture ) data.roughnessMap = this.roughnessMap.toJSON( meta ).uuid;\n\t\tif ( this.metalnessMap && this.metalnessMap.isTexture ) data.metalnessMap = this.metalnessMap.toJSON( meta ).uuid;\n\n\t\tif ( this.emissiveMap && this.emissiveMap.isTexture ) data.emissiveMap = this.emissiveMap.toJSON( meta ).uuid;\n\t\tif ( this.specularMap && this.specularMap.isTexture ) data.specularMap = this.specularMap.toJSON( meta ).uuid;\n\t\tif ( this.specularIntensityMap && this.specularIntensityMap.isTexture ) data.specularIntensityMap = this.specularIntensityMap.toJSON( meta ).uuid;\n\t\tif ( this.specularColorMap && this.specularColorMap.isTexture ) data.specularColorMap = this.specularColorMap.toJSON( meta ).uuid;\n\n\t\tif ( this.envMap && this.envMap.isTexture ) {\n\n\t\t\tdata.envMap = this.envMap.toJSON( meta ).uuid;\n\n\t\t\tif ( this.combine !== undefined ) data.combine = this.combine;\n\n\t\t}\n\n\t\tif ( this.envMapRotation !== undefined ) data.envMapRotation = this.envMapRotation.toArray();\n\t\tif ( this.envMapIntensity !== undefined ) data.envMapIntensity = this.envMapIntensity;\n\t\tif ( this.reflectivity !== undefined ) data.reflectivity = this.reflectivity;\n\t\tif ( this.refractionRatio !== undefined ) data.refractionRatio = this.refractionRatio;\n\n\t\tif ( this.gradientMap && this.gradientMap.isTexture ) {\n\n\t\t\tdata.gradientMap = this.gradientMap.toJSON( meta ).uuid;\n\n\t\t}\n\n\t\tif ( this.transmission !== undefined ) data.transmission = this.transmission;\n\t\tif ( this.transmissionMap && this.transmissionMap.isTexture ) data.transmissionMap = this.transmissionMap.toJSON( meta ).uuid;\n\t\tif ( this.thickness !== undefined ) data.thickness = this.thickness;\n\t\tif ( this.thicknessMap && this.thicknessMap.isTexture ) data.thicknessMap = this.thicknessMap.toJSON( meta ).uuid;\n\t\tif ( this.attenuationDistance !== undefined && this.attenuationDistance !== Infinity ) data.attenuationDistance = this.attenuationDistance;\n\t\tif ( this.attenuationColor !== undefined ) data.attenuationColor = this.attenuationColor.getHex();\n\n\t\tif ( this.size !== undefined ) data.size = this.size;\n\t\tif ( this.shadowSide !== null ) data.shadowSide = this.shadowSide;\n\t\tif ( this.sizeAttenuation !== undefined ) data.sizeAttenuation = this.sizeAttenuation;\n\n\t\tif ( this.blending !== NormalBlending ) data.blending = this.blending;\n\t\tif ( this.side !== FrontSide ) data.side = this.side;\n\t\tif ( this.vertexColors === true ) data.vertexColors = true;\n\n\t\tif ( this.opacity < 1 ) data.opacity = this.opacity;\n\t\tif ( this.transparent === true ) data.transparent = true;\n\n\t\tif ( this.blendSrc !== SrcAlphaFactor ) data.blendSrc = this.blendSrc;\n\t\tif ( this.blendDst !== OneMinusSrcAlphaFactor ) data.blendDst = this.blendDst;\n\t\tif ( this.blendEquation !== AddEquation ) data.blendEquation = this.blendEquation;\n\t\tif ( this.blendSrcAlpha !== null ) data.blendSrcAlpha = this.blendSrcAlpha;\n\t\tif ( this.blendDstAlpha !== null ) data.blendDstAlpha = this.blendDstAlpha;\n\t\tif ( this.blendEquationAlpha !== null ) data.blendEquationAlpha = this.blendEquationAlpha;\n\t\tif ( this.blendColor && this.blendColor.isColor ) data.blendColor = this.blendColor.getHex();\n\t\tif ( this.blendAlpha !== 0 ) data.blendAlpha = this.blendAlpha;\n\n\t\tif ( this.depthFunc !== LessEqualDepth ) data.depthFunc = this.depthFunc;\n\t\tif ( this.depthTest === false ) data.depthTest = this.depthTest;\n\t\tif ( this.depthWrite === false ) data.depthWrite = this.depthWrite;\n\t\tif ( this.colorWrite === false ) data.colorWrite = this.colorWrite;\n\n\t\tif ( this.stencilWriteMask !== 0xff ) data.stencilWriteMask = this.stencilWriteMask;\n\t\tif ( this.stencilFunc !== AlwaysStencilFunc ) data.stencilFunc = this.stencilFunc;\n\t\tif ( this.stencilRef !== 0 ) data.stencilRef = this.stencilRef;\n\t\tif ( this.stencilFuncMask !== 0xff ) data.stencilFuncMask = this.stencilFuncMask;\n\t\tif ( this.stencilFail !== KeepStencilOp ) data.stencilFail = this.stencilFail;\n\t\tif ( this.stencilZFail !== KeepStencilOp ) data.stencilZFail = this.stencilZFail;\n\t\tif ( this.stencilZPass !== KeepStencilOp ) data.stencilZPass = this.stencilZPass;\n\t\tif ( this.stencilWrite === true ) data.stencilWrite = this.stencilWrite;\n\n\t\t// rotation (SpriteMaterial)\n\t\tif ( this.rotation !== undefined && this.rotation !== 0 ) data.rotation = this.rotation;\n\n\t\tif ( this.polygonOffset === true ) data.polygonOffset = true;\n\t\tif ( this.polygonOffsetFactor !== 0 ) data.polygonOffsetFactor = this.polygonOffsetFactor;\n\t\tif ( this.polygonOffsetUnits !== 0 ) data.polygonOffsetUnits = this.polygonOffsetUnits;\n\n\t\tif ( this.linewidth !== undefined && this.linewidth !== 1 ) data.linewidth = this.linewidth;\n\t\tif ( this.dashSize !== undefined ) data.dashSize = this.dashSize;\n\t\tif ( this.gapSize !== undefined ) data.gapSize = this.gapSize;\n\t\tif ( this.scale !== undefined ) data.scale = this.scale;\n\n\t\tif ( this.dithering === true ) data.dithering = true;\n\n\t\tif ( this.alphaTest > 0 ) data.alphaTest = this.alphaTest;\n\t\tif ( this.alphaHash === true ) data.alphaHash = true;\n\t\tif ( this.alphaToCoverage === true ) data.alphaToCoverage = true;\n\t\tif ( this.premultipliedAlpha === true ) data.premultipliedAlpha = true;\n\t\tif ( this.forceSinglePass === true ) data.forceSinglePass = true;\n\n\t\tif ( this.wireframe === true ) data.wireframe = true;\n\t\tif ( this.wireframeLinewidth > 1 ) data.wireframeLinewidth = this.wireframeLinewidth;\n\t\tif ( this.wireframeLinecap !== 'round' ) data.wireframeLinecap = this.wireframeLinecap;\n\t\tif ( this.wireframeLinejoin !== 'round' ) data.wireframeLinejoin = this.wireframeLinejoin;\n\n\t\tif ( this.flatShading === true ) data.flatShading = true;\n\n\t\tif ( this.visible === false ) data.visible = false;\n\n\t\tif ( this.toneMapped === false ) data.toneMapped = false;\n\n\t\tif ( this.fog === false ) data.fog = false;\n\n\t\tif ( Object.keys( this.userData ).length > 0 ) data.userData = this.userData;\n\n\t\t// TODO: Copied from Object3D.toJSON\n\n\t\tfunction extractFromCache( cache ) {\n\n\t\t\tconst values = [];\n\n\t\t\tfor ( const key in cache ) {\n\n\t\t\t\tconst data = cache[ key ];\n\t\t\t\tdelete data.metadata;\n\t\t\t\tvalues.push( data );\n\n\t\t\t}\n\n\t\t\treturn values;\n\n\t\t}\n\n\t\tif ( isRootObject ) {\n\n\t\t\tconst textures = extractFromCache( meta.textures );\n\t\t\tconst images = extractFromCache( meta.images );\n\n\t\t\tif ( textures.length > 0 ) data.textures = textures;\n\t\t\tif ( images.length > 0 ) data.images = images;\n\n\t\t}\n\n\t\treturn data;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n\tcopy( source ) {\n\n\t\tthis.name = source.name;\n\n\t\tthis.blending = source.blending;\n\t\tthis.side = source.side;\n\t\tthis.vertexColors = source.vertexColors;\n\n\t\tthis.opacity = source.opacity;\n\t\tthis.transparent = source.transparent;\n\n\t\tthis.blendSrc = source.blendSrc;\n\t\tthis.blendDst = source.blendDst;\n\t\tthis.blendEquation = source.blendEquation;\n\t\tthis.blendSrcAlpha = source.blendSrcAlpha;\n\t\tthis.blendDstAlpha = source.blendDstAlpha;\n\t\tthis.blendEquationAlpha = source.blendEquationAlpha;\n\t\tthis.blendColor.copy( source.blendColor );\n\t\tthis.blendAlpha = source.blendAlpha;\n\n\t\tthis.depthFunc = source.depthFunc;\n\t\tthis.depthTest = source.depthTest;\n\t\tthis.depthWrite = source.depthWrite;\n\n\t\tthis.stencilWriteMask = source.stencilWriteMask;\n\t\tthis.stencilFunc = source.stencilFunc;\n\t\tthis.stencilRef = source.stencilRef;\n\t\tthis.stencilFuncMask = source.stencilFuncMask;\n\t\tthis.stencilFail = source.stencilFail;\n\t\tthis.stencilZFail = source.stencilZFail;\n\t\tthis.stencilZPass = source.stencilZPass;\n\t\tthis.stencilWrite = source.stencilWrite;\n\n\t\tconst srcPlanes = source.clippingPlanes;\n\t\tlet dstPlanes = null;\n\n\t\tif ( srcPlanes !== null ) {\n\n\t\t\tconst n = srcPlanes.length;\n\t\t\tdstPlanes = new Array( n );\n\n\t\t\tfor ( let i = 0; i !== n; ++ i ) {\n\n\t\t\t\tdstPlanes[ i ] = srcPlanes[ i ].clone();\n\n\t\t\t}\n\n\t\t}\n\n\t\tthis.clippingPlanes = dstPlanes;\n\t\tthis.clipIntersection = source.clipIntersection;\n\t\tthis.clipShadows = source.clipShadows;\n\n\t\tthis.shadowSide = source.shadowSide;\n\n\t\tthis.colorWrite = source.colorWrite;\n\n\t\tthis.precision = source.precision;\n\n\t\tthis.polygonOffset = source.polygonOffset;\n\t\tthis.polygonOffsetFactor = source.polygonOffsetFactor;\n\t\tthis.polygonOffsetUnits = source.polygonOffsetUnits;\n\n\t\tthis.dithering = source.dithering;\n\n\t\tthis.alphaTest = source.alphaTest;\n\t\tthis.alphaHash = source.alphaHash;\n\t\tthis.alphaToCoverage = source.alphaToCoverage;\n\t\tthis.premultipliedAlpha = source.premultipliedAlpha;\n\t\tthis.forceSinglePass = source.forceSinglePass;\n\n\t\tthis.visible = source.visible;\n\n\t\tthis.toneMapped = source.toneMapped;\n\n\t\tthis.userData = JSON.parse( JSON.stringify( source.userData ) );\n\n\t\treturn this;\n\n\t}\n\n\tdispose() {\n\n\t\tthis.dispatchEvent( { type: 'dispose' } );\n\n\t}\n\n\tset needsUpdate( value ) {\n\n\t\tif ( value === true ) this.version ++;\n\n\t}\n\n}\n\nclass MeshBasicMaterial extends Material {\n\n\tconstructor( parameters ) {\n\n\t\tsuper();\n\n\t\tthis.isMeshBasicMaterial = true;\n\n\t\tthis.type = 'MeshBasicMaterial';\n\n\t\tthis.color = new Color( 0xffffff ); // emissive\n\n\t\tthis.map = null;\n\n\t\tthis.lightMap = null;\n\t\tthis.lightMapIntensity = 1.0;\n\n\t\tthis.aoMap = null;\n\t\tthis.aoMapIntensity = 1.0;\n\n\t\tthis.specularMap = null;\n\n\t\tthis.alphaMap = null;\n\n\t\tthis.envMap = null;\n\t\tthis.envMapRotation = new Euler();\n\t\tthis.combine = MultiplyOperation;\n\t\tthis.reflectivity = 1;\n\t\tthis.refractionRatio = 0.98;\n\n\t\tthis.wireframe = false;\n\t\tthis.wireframeLinewidth = 1;\n\t\tthis.wireframeLinecap = 'round';\n\t\tthis.wireframeLinejoin = 'round';\n\n\t\tthis.fog = true;\n\n\t\tthis.setValues( parameters );\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.color.copy( source.color );\n\n\t\tthis.map = source.map;\n\n\t\tthis.lightMap = source.lightMap;\n\t\tthis.lightMapIntensity = source.lightMapIntensity;\n\n\t\tthis.aoMap = source.aoMap;\n\t\tthis.aoMapIntensity = source.aoMapIntensity;\n\n\t\tthis.specularMap = source.specularMap;\n\n\t\tthis.alphaMap = source.alphaMap;\n\n\t\tthis.envMap = source.envMap;\n\t\tthis.envMapRotation.copy( source.envMapRotation );\n\t\tthis.combine = source.combine;\n\t\tthis.reflectivity = source.reflectivity;\n\t\tthis.refractionRatio = source.refractionRatio;\n\n\t\tthis.wireframe = source.wireframe;\n\t\tthis.wireframeLinewidth = source.wireframeLinewidth;\n\t\tthis.wireframeLinecap = source.wireframeLinecap;\n\t\tthis.wireframeLinejoin = source.wireframeLinejoin;\n\n\t\tthis.fog = source.fog;\n\n\t\treturn this;\n\n\t}\n\n}\n\n// Fast Half Float Conversions, http://www.fox-toolkit.org/ftp/fasthalffloatconversion.pdf\n\nconst _tables = /*@__PURE__*/ _generateTables();\n\nfunction _generateTables() {\n\n\t// float32 to float16 helpers\n\n\tconst buffer = new ArrayBuffer( 4 );\n\tconst floatView = new Float32Array( buffer );\n\tconst uint32View = new Uint32Array( buffer );\n\n\tconst baseTable = new Uint32Array( 512 );\n\tconst shiftTable = new Uint32Array( 512 );\n\n\tfor ( let i = 0; i < 256; ++ i ) {\n\n\t\tconst e = i - 127;\n\n\t\t// very small number (0, -0)\n\n\t\tif ( e < - 27 ) {\n\n\t\t\tbaseTable[ i ] = 0x0000;\n\t\t\tbaseTable[ i | 0x100 ] = 0x8000;\n\t\t\tshiftTable[ i ] = 24;\n\t\t\tshiftTable[ i | 0x100 ] = 24;\n\n\t\t\t// small number (denorm)\n\n\t\t} else if ( e < - 14 ) {\n\n\t\t\tbaseTable[ i ] = 0x0400 >> ( - e - 14 );\n\t\t\tbaseTable[ i | 0x100 ] = ( 0x0400 >> ( - e - 14 ) ) | 0x8000;\n\t\t\tshiftTable[ i ] = - e - 1;\n\t\t\tshiftTable[ i | 0x100 ] = - e - 1;\n\n\t\t\t// normal number\n\n\t\t} else if ( e <= 15 ) {\n\n\t\t\tbaseTable[ i ] = ( e + 15 ) << 10;\n\t\t\tbaseTable[ i | 0x100 ] = ( ( e + 15 ) << 10 ) | 0x8000;\n\t\t\tshiftTable[ i ] = 13;\n\t\t\tshiftTable[ i | 0x100 ] = 13;\n\n\t\t\t// large number (Infinity, -Infinity)\n\n\t\t} else if ( e < 128 ) {\n\n\t\t\tbaseTable[ i ] = 0x7c00;\n\t\t\tbaseTable[ i | 0x100 ] = 0xfc00;\n\t\t\tshiftTable[ i ] = 24;\n\t\t\tshiftTable[ i | 0x100 ] = 24;\n\n\t\t\t// stay (NaN, Infinity, -Infinity)\n\n\t\t} else {\n\n\t\t\tbaseTable[ i ] = 0x7c00;\n\t\t\tbaseTable[ i | 0x100 ] = 0xfc00;\n\t\t\tshiftTable[ i ] = 13;\n\t\t\tshiftTable[ i | 0x100 ] = 13;\n\n\t\t}\n\n\t}\n\n\t// float16 to float32 helpers\n\n\tconst mantissaTable = new Uint32Array( 2048 );\n\tconst exponentTable = new Uint32Array( 64 );\n\tconst offsetTable = new Uint32Array( 64 );\n\n\tfor ( let i = 1; i < 1024; ++ i ) {\n\n\t\tlet m = i << 13; // zero pad mantissa bits\n\t\tlet e = 0; // zero exponent\n\n\t\t// normalized\n\t\twhile ( ( m & 0x00800000 ) === 0 ) {\n\n\t\t\tm <<= 1;\n\t\t\te -= 0x00800000; // decrement exponent\n\n\t\t}\n\n\t\tm &= ~ 0x00800000; // clear leading 1 bit\n\t\te += 0x38800000; // adjust bias\n\n\t\tmantissaTable[ i ] = m | e;\n\n\t}\n\n\tfor ( let i = 1024; i < 2048; ++ i ) {\n\n\t\tmantissaTable[ i ] = 0x38000000 + ( ( i - 1024 ) << 13 );\n\n\t}\n\n\tfor ( let i = 1; i < 31; ++ i ) {\n\n\t\texponentTable[ i ] = i << 23;\n\n\t}\n\n\texponentTable[ 31 ] = 0x47800000;\n\texponentTable[ 32 ] = 0x80000000;\n\n\tfor ( let i = 33; i < 63; ++ i ) {\n\n\t\texponentTable[ i ] = 0x80000000 + ( ( i - 32 ) << 23 );\n\n\t}\n\n\texponentTable[ 63 ] = 0xc7800000;\n\n\tfor ( let i = 1; i < 64; ++ i ) {\n\n\t\tif ( i !== 32 ) {\n\n\t\t\toffsetTable[ i ] = 1024;\n\n\t\t}\n\n\t}\n\n\treturn {\n\t\tfloatView: floatView,\n\t\tuint32View: uint32View,\n\t\tbaseTable: baseTable,\n\t\tshiftTable: shiftTable,\n\t\tmantissaTable: mantissaTable,\n\t\texponentTable: exponentTable,\n\t\toffsetTable: offsetTable\n\t};\n\n}\n\n// float32 to float16\n\nfunction toHalfFloat( val ) {\n\n\tif ( Math.abs( val ) > 65504 ) console.warn( 'THREE.DataUtils.toHalfFloat(): Value out of range.' );\n\n\tval = clamp( val, - 65504, 65504 );\n\n\t_tables.floatView[ 0 ] = val;\n\tconst f = _tables.uint32View[ 0 ];\n\tconst e = ( f >> 23 ) & 0x1ff;\n\treturn _tables.baseTable[ e ] + ( ( f & 0x007fffff ) >> _tables.shiftTable[ e ] );\n\n}\n\n// float16 to float32\n\nfunction fromHalfFloat( val ) {\n\n\tconst m = val >> 10;\n\t_tables.uint32View[ 0 ] = _tables.mantissaTable[ _tables.offsetTable[ m ] + ( val & 0x3ff ) ] + _tables.exponentTable[ m ];\n\treturn _tables.floatView[ 0 ];\n\n}\n\nconst DataUtils = {\n\ttoHalfFloat: toHalfFloat,\n\tfromHalfFloat: fromHalfFloat,\n};\n\nconst _vector$9 = /*@__PURE__*/ new Vector3();\nconst _vector2$1 = /*@__PURE__*/ new Vector2();\n\nclass BufferAttribute {\n\n\tconstructor( array, itemSize, normalized = false ) {\n\n\t\tif ( Array.isArray( array ) ) {\n\n\t\t\tthrow new TypeError( 'THREE.BufferAttribute: array should be a Typed Array.' );\n\n\t\t}\n\n\t\tthis.isBufferAttribute = true;\n\n\t\tthis.name = '';\n\n\t\tthis.array = array;\n\t\tthis.itemSize = itemSize;\n\t\tthis.count = array !== undefined ? array.length / itemSize : 0;\n\t\tthis.normalized = normalized;\n\n\t\tthis.usage = StaticDrawUsage;\n\t\tthis._updateRange = { offset: 0, count: - 1 };\n\t\tthis.updateRanges = [];\n\t\tthis.gpuType = FloatType;\n\n\t\tthis.version = 0;\n\n\t}\n\n\tonUploadCallback() {}\n\n\tset needsUpdate( value ) {\n\n\t\tif ( value === true ) this.version ++;\n\n\t}\n\n\tget updateRange() {\n\n\t\twarnOnce( 'THREE.BufferAttribute: updateRange() is deprecated and will be removed in r169. Use addUpdateRange() instead.' ); // @deprecated, r159\n\t\treturn this._updateRange;\n\n\t}\n\n\tsetUsage( value ) {\n\n\t\tthis.usage = value;\n\n\t\treturn this;\n\n\t}\n\n\taddUpdateRange( start, count ) {\n\n\t\tthis.updateRanges.push( { start, count } );\n\n\t}\n\n\tclearUpdateRanges() {\n\n\t\tthis.updateRanges.length = 0;\n\n\t}\n\n\tcopy( source ) {\n\n\t\tthis.name = source.name;\n\t\tthis.array = new source.array.constructor( source.array );\n\t\tthis.itemSize = source.itemSize;\n\t\tthis.count = source.count;\n\t\tthis.normalized = source.normalized;\n\n\t\tthis.usage = source.usage;\n\t\tthis.gpuType = source.gpuType;\n\n\t\treturn this;\n\n\t}\n\n\tcopyAt( index1, attribute, index2 ) {\n\n\t\tindex1 *= this.itemSize;\n\t\tindex2 *= attribute.itemSize;\n\n\t\tfor ( let i = 0, l = this.itemSize; i < l; i ++ ) {\n\n\t\t\tthis.array[ index1 + i ] = attribute.array[ index2 + i ];\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tcopyArray( array ) {\n\n\t\tthis.array.set( array );\n\n\t\treturn this;\n\n\t}\n\n\tapplyMatrix3( m ) {\n\n\t\tif ( this.itemSize === 2 ) {\n\n\t\t\tfor ( let i = 0, l = this.count; i < l; i ++ ) {\n\n\t\t\t\t_vector2$1.fromBufferAttribute( this, i );\n\t\t\t\t_vector2$1.applyMatrix3( m );\n\n\t\t\t\tthis.setXY( i, _vector2$1.x, _vector2$1.y );\n\n\t\t\t}\n\n\t\t} else if ( this.itemSize === 3 ) {\n\n\t\t\tfor ( let i = 0, l = this.count; i < l; i ++ ) {\n\n\t\t\t\t_vector$9.fromBufferAttribute( this, i );\n\t\t\t\t_vector$9.applyMatrix3( m );\n\n\t\t\t\tthis.setXYZ( i, _vector$9.x, _vector$9.y, _vector$9.z );\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tapplyMatrix4( m ) {\n\n\t\tfor ( let i = 0, l = this.count; i < l; i ++ ) {\n\n\t\t\t_vector$9.fromBufferAttribute( this, i );\n\n\t\t\t_vector$9.applyMatrix4( m );\n\n\t\t\tthis.setXYZ( i, _vector$9.x, _vector$9.y, _vector$9.z );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tapplyNormalMatrix( m ) {\n\n\t\tfor ( let i = 0, l = this.count; i < l; i ++ ) {\n\n\t\t\t_vector$9.fromBufferAttribute( this, i );\n\n\t\t\t_vector$9.applyNormalMatrix( m );\n\n\t\t\tthis.setXYZ( i, _vector$9.x, _vector$9.y, _vector$9.z );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\ttransformDirection( m ) {\n\n\t\tfor ( let i = 0, l = this.count; i < l; i ++ ) {\n\n\t\t\t_vector$9.fromBufferAttribute( this, i );\n\n\t\t\t_vector$9.transformDirection( m );\n\n\t\t\tthis.setXYZ( i, _vector$9.x, _vector$9.y, _vector$9.z );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tset( value, offset = 0 ) {\n\n\t\t// Matching BufferAttribute constructor, do not normalize the array.\n\t\tthis.array.set( value, offset );\n\n\t\treturn this;\n\n\t}\n\n\tgetComponent( index, component ) {\n\n\t\tlet value = this.array[ index * this.itemSize + component ];\n\n\t\tif ( this.normalized ) value = denormalize( value, this.array );\n\n\t\treturn value;\n\n\t}\n\n\tsetComponent( index, component, value ) {\n\n\t\tif ( this.normalized ) value = normalize( value, this.array );\n\n\t\tthis.array[ index * this.itemSize + component ] = value;\n\n\t\treturn this;\n\n\t}\n\n\tgetX( index ) {\n\n\t\tlet x = this.array[ index * this.itemSize ];\n\n\t\tif ( this.normalized ) x = denormalize( x, this.array );\n\n\t\treturn x;\n\n\t}\n\n\tsetX( index, x ) {\n\n\t\tif ( this.normalized ) x = normalize( x, this.array );\n\n\t\tthis.array[ index * this.itemSize ] = x;\n\n\t\treturn this;\n\n\t}\n\n\tgetY( index ) {\n\n\t\tlet y = this.array[ index * this.itemSize + 1 ];\n\n\t\tif ( this.normalized ) y = denormalize( y, this.array );\n\n\t\treturn y;\n\n\t}\n\n\tsetY( index, y ) {\n\n\t\tif ( this.normalized ) y = normalize( y, this.array );\n\n\t\tthis.array[ index * this.itemSize + 1 ] = y;\n\n\t\treturn this;\n\n\t}\n\n\tgetZ( index ) {\n\n\t\tlet z = this.array[ index * this.itemSize + 2 ];\n\n\t\tif ( this.normalized ) z = denormalize( z, this.array );\n\n\t\treturn z;\n\n\t}\n\n\tsetZ( index, z ) {\n\n\t\tif ( this.normalized ) z = normalize( z, this.array );\n\n\t\tthis.array[ index * this.itemSize + 2 ] = z;\n\n\t\treturn this;\n\n\t}\n\n\tgetW( index ) {\n\n\t\tlet w = this.array[ index * this.itemSize + 3 ];\n\n\t\tif ( this.normalized ) w = denormalize( w, this.array );\n\n\t\treturn w;\n\n\t}\n\n\tsetW( index, w ) {\n\n\t\tif ( this.normalized ) w = normalize( w, this.array );\n\n\t\tthis.array[ index * this.itemSize + 3 ] = w;\n\n\t\treturn this;\n\n\t}\n\n\tsetXY( index, x, y ) {\n\n\t\tindex *= this.itemSize;\n\n\t\tif ( this.normalized ) {\n\n\t\t\tx = normalize( x, this.array );\n\t\t\ty = normalize( y, this.array );\n\n\t\t}\n\n\t\tthis.array[ index + 0 ] = x;\n\t\tthis.array[ index + 1 ] = y;\n\n\t\treturn this;\n\n\t}\n\n\tsetXYZ( index, x, y, z ) {\n\n\t\tindex *= this.itemSize;\n\n\t\tif ( this.normalized ) {\n\n\t\t\tx = normalize( x, this.array );\n\t\t\ty = normalize( y, this.array );\n\t\t\tz = normalize( z, this.array );\n\n\t\t}\n\n\t\tthis.array[ index + 0 ] = x;\n\t\tthis.array[ index + 1 ] = y;\n\t\tthis.array[ index + 2 ] = z;\n\n\t\treturn this;\n\n\t}\n\n\tsetXYZW( index, x, y, z, w ) {\n\n\t\tindex *= this.itemSize;\n\n\t\tif ( this.normalized ) {\n\n\t\t\tx = normalize( x, this.array );\n\t\t\ty = normalize( y, this.array );\n\t\t\tz = normalize( z, this.array );\n\t\t\tw = normalize( w, this.array );\n\n\t\t}\n\n\t\tthis.array[ index + 0 ] = x;\n\t\tthis.array[ index + 1 ] = y;\n\t\tthis.array[ index + 2 ] = z;\n\t\tthis.array[ index + 3 ] = w;\n\n\t\treturn this;\n\n\t}\n\n\tonUpload( callback ) {\n\n\t\tthis.onUploadCallback = callback;\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor( this.array, this.itemSize ).copy( this );\n\n\t}\n\n\ttoJSON() {\n\n\t\tconst data = {\n\t\t\titemSize: this.itemSize,\n\t\t\ttype: this.array.constructor.name,\n\t\t\tarray: Array.from( this.array ),\n\t\t\tnormalized: this.normalized\n\t\t};\n\n\t\tif ( this.name !== '' ) data.name = this.name;\n\t\tif ( this.usage !== StaticDrawUsage ) data.usage = this.usage;\n\n\t\treturn data;\n\n\t}\n\n}\n\n//\n\nclass Int8BufferAttribute extends BufferAttribute {\n\n\tconstructor( array, itemSize, normalized ) {\n\n\t\tsuper( new Int8Array( array ), itemSize, normalized );\n\n\t}\n\n}\n\nclass Uint8BufferAttribute extends BufferAttribute {\n\n\tconstructor( array, itemSize, normalized ) {\n\n\t\tsuper( new Uint8Array( array ), itemSize, normalized );\n\n\t}\n\n}\n\nclass Uint8ClampedBufferAttribute extends BufferAttribute {\n\n\tconstructor( array, itemSize, normalized ) {\n\n\t\tsuper( new Uint8ClampedArray( array ), itemSize, normalized );\n\n\t}\n\n}\n\nclass Int16BufferAttribute extends BufferAttribute {\n\n\tconstructor( array, itemSize, normalized ) {\n\n\t\tsuper( new Int16Array( array ), itemSize, normalized );\n\n\t}\n\n}\n\nclass Uint16BufferAttribute extends BufferAttribute {\n\n\tconstructor( array, itemSize, normalized ) {\n\n\t\tsuper( new Uint16Array( array ), itemSize, normalized );\n\n\t}\n\n}\n\nclass Int32BufferAttribute extends BufferAttribute {\n\n\tconstructor( array, itemSize, normalized ) {\n\n\t\tsuper( new Int32Array( array ), itemSize, normalized );\n\n\t}\n\n}\n\nclass Uint32BufferAttribute extends BufferAttribute {\n\n\tconstructor( array, itemSize, normalized ) {\n\n\t\tsuper( new Uint32Array( array ), itemSize, normalized );\n\n\t}\n\n}\n\nclass Float16BufferAttribute extends BufferAttribute {\n\n\tconstructor( array, itemSize, normalized ) {\n\n\t\tsuper( new Uint16Array( array ), itemSize, normalized );\n\n\t\tthis.isFloat16BufferAttribute = true;\n\n\t}\n\n\tgetX( index ) {\n\n\t\tlet x = fromHalfFloat( this.array[ index * this.itemSize ] );\n\n\t\tif ( this.normalized ) x = denormalize( x, this.array );\n\n\t\treturn x;\n\n\t}\n\n\tsetX( index, x ) {\n\n\t\tif ( this.normalized ) x = normalize( x, this.array );\n\n\t\tthis.array[ index * this.itemSize ] = toHalfFloat( x );\n\n\t\treturn this;\n\n\t}\n\n\tgetY( index ) {\n\n\t\tlet y = fromHalfFloat( this.array[ index * this.itemSize + 1 ] );\n\n\t\tif ( this.normalized ) y = denormalize( y, this.array );\n\n\t\treturn y;\n\n\t}\n\n\tsetY( index, y ) {\n\n\t\tif ( this.normalized ) y = normalize( y, this.array );\n\n\t\tthis.array[ index * this.itemSize + 1 ] = toHalfFloat( y );\n\n\t\treturn this;\n\n\t}\n\n\tgetZ( index ) {\n\n\t\tlet z = fromHalfFloat( this.array[ index * this.itemSize + 2 ] );\n\n\t\tif ( this.normalized ) z = denormalize( z, this.array );\n\n\t\treturn z;\n\n\t}\n\n\tsetZ( index, z ) {\n\n\t\tif ( this.normalized ) z = normalize( z, this.array );\n\n\t\tthis.array[ index * this.itemSize + 2 ] = toHalfFloat( z );\n\n\t\treturn this;\n\n\t}\n\n\tgetW( index ) {\n\n\t\tlet w = fromHalfFloat( this.array[ index * this.itemSize + 3 ] );\n\n\t\tif ( this.normalized ) w = denormalize( w, this.array );\n\n\t\treturn w;\n\n\t}\n\n\tsetW( index, w ) {\n\n\t\tif ( this.normalized ) w = normalize( w, this.array );\n\n\t\tthis.array[ index * this.itemSize + 3 ] = toHalfFloat( w );\n\n\t\treturn this;\n\n\t}\n\n\tsetXY( index, x, y ) {\n\n\t\tindex *= this.itemSize;\n\n\t\tif ( this.normalized ) {\n\n\t\t\tx = normalize( x, this.array );\n\t\t\ty = normalize( y, this.array );\n\n\t\t}\n\n\t\tthis.array[ index + 0 ] = toHalfFloat( x );\n\t\tthis.array[ index + 1 ] = toHalfFloat( y );\n\n\t\treturn this;\n\n\t}\n\n\tsetXYZ( index, x, y, z ) {\n\n\t\tindex *= this.itemSize;\n\n\t\tif ( this.normalized ) {\n\n\t\t\tx = normalize( x, this.array );\n\t\t\ty = normalize( y, this.array );\n\t\t\tz = normalize( z, this.array );\n\n\t\t}\n\n\t\tthis.array[ index + 0 ] = toHalfFloat( x );\n\t\tthis.array[ index + 1 ] = toHalfFloat( y );\n\t\tthis.array[ index + 2 ] = toHalfFloat( z );\n\n\t\treturn this;\n\n\t}\n\n\tsetXYZW( index, x, y, z, w ) {\n\n\t\tindex *= this.itemSize;\n\n\t\tif ( this.normalized ) {\n\n\t\t\tx = normalize( x, this.array );\n\t\t\ty = normalize( y, this.array );\n\t\t\tz = normalize( z, this.array );\n\t\t\tw = normalize( w, this.array );\n\n\t\t}\n\n\t\tthis.array[ index + 0 ] = toHalfFloat( x );\n\t\tthis.array[ index + 1 ] = toHalfFloat( y );\n\t\tthis.array[ index + 2 ] = toHalfFloat( z );\n\t\tthis.array[ index + 3 ] = toHalfFloat( w );\n\n\t\treturn this;\n\n\t}\n\n}\n\n\nclass Float32BufferAttribute extends BufferAttribute {\n\n\tconstructor( array, itemSize, normalized ) {\n\n\t\tsuper( new Float32Array( array ), itemSize, normalized );\n\n\t}\n\n}\n\nlet _id$2 = 0;\n\nconst _m1$2 = /*@__PURE__*/ new Matrix4();\nconst _obj = /*@__PURE__*/ new Object3D();\nconst _offset = /*@__PURE__*/ new Vector3();\nconst _box$2 = /*@__PURE__*/ new Box3();\nconst _boxMorphTargets = /*@__PURE__*/ new Box3();\nconst _vector$8 = /*@__PURE__*/ new Vector3();\n\nclass BufferGeometry extends EventDispatcher {\n\n\tconstructor() {\n\n\t\tsuper();\n\n\t\tthis.isBufferGeometry = true;\n\n\t\tObject.defineProperty( this, 'id', { value: _id$2 ++ } );\n\n\t\tthis.uuid = generateUUID();\n\n\t\tthis.name = '';\n\t\tthis.type = 'BufferGeometry';\n\n\t\tthis.index = null;\n\t\tthis.attributes = {};\n\n\t\tthis.morphAttributes = {};\n\t\tthis.morphTargetsRelative = false;\n\n\t\tthis.groups = [];\n\n\t\tthis.boundingBox = null;\n\t\tthis.boundingSphere = null;\n\n\t\tthis.drawRange = { start: 0, count: Infinity };\n\n\t\tthis.userData = {};\n\n\t}\n\n\tgetIndex() {\n\n\t\treturn this.index;\n\n\t}\n\n\tsetIndex( index ) {\n\n\t\tif ( Array.isArray( index ) ) {\n\n\t\t\tthis.index = new ( arrayNeedsUint32( index ) ? Uint32BufferAttribute : Uint16BufferAttribute )( index, 1 );\n\n\t\t} else {\n\n\t\t\tthis.index = index;\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tgetAttribute( name ) {\n\n\t\treturn this.attributes[ name ];\n\n\t}\n\n\tsetAttribute( name, attribute ) {\n\n\t\tthis.attributes[ name ] = attribute;\n\n\t\treturn this;\n\n\t}\n\n\tdeleteAttribute( name ) {\n\n\t\tdelete this.attributes[ name ];\n\n\t\treturn this;\n\n\t}\n\n\thasAttribute( name ) {\n\n\t\treturn this.attributes[ name ] !== undefined;\n\n\t}\n\n\taddGroup( start, count, materialIndex = 0 ) {\n\n\t\tthis.groups.push( {\n\n\t\t\tstart: start,\n\t\t\tcount: count,\n\t\t\tmaterialIndex: materialIndex\n\n\t\t} );\n\n\t}\n\n\tclearGroups() {\n\n\t\tthis.groups = [];\n\n\t}\n\n\tsetDrawRange( start, count ) {\n\n\t\tthis.drawRange.start = start;\n\t\tthis.drawRange.count = count;\n\n\t}\n\n\tapplyMatrix4( matrix ) {\n\n\t\tconst position = this.attributes.position;\n\n\t\tif ( position !== undefined ) {\n\n\t\t\tposition.applyMatrix4( matrix );\n\n\t\t\tposition.needsUpdate = true;\n\n\t\t}\n\n\t\tconst normal = this.attributes.normal;\n\n\t\tif ( normal !== undefined ) {\n\n\t\t\tconst normalMatrix = new Matrix3().getNormalMatrix( matrix );\n\n\t\t\tnormal.applyNormalMatrix( normalMatrix );\n\n\t\t\tnormal.needsUpdate = true;\n\n\t\t}\n\n\t\tconst tangent = this.attributes.tangent;\n\n\t\tif ( tangent !== undefined ) {\n\n\t\t\ttangent.transformDirection( matrix );\n\n\t\t\ttangent.needsUpdate = true;\n\n\t\t}\n\n\t\tif ( this.boundingBox !== null ) {\n\n\t\t\tthis.computeBoundingBox();\n\n\t\t}\n\n\t\tif ( this.boundingSphere !== null ) {\n\n\t\t\tthis.computeBoundingSphere();\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tapplyQuaternion( q ) {\n\n\t\t_m1$2.makeRotationFromQuaternion( q );\n\n\t\tthis.applyMatrix4( _m1$2 );\n\n\t\treturn this;\n\n\t}\n\n\trotateX( angle ) {\n\n\t\t// rotate geometry around world x-axis\n\n\t\t_m1$2.makeRotationX( angle );\n\n\t\tthis.applyMatrix4( _m1$2 );\n\n\t\treturn this;\n\n\t}\n\n\trotateY( angle ) {\n\n\t\t// rotate geometry around world y-axis\n\n\t\t_m1$2.makeRotationY( angle );\n\n\t\tthis.applyMatrix4( _m1$2 );\n\n\t\treturn this;\n\n\t}\n\n\trotateZ( angle ) {\n\n\t\t// rotate geometry around world z-axis\n\n\t\t_m1$2.makeRotationZ( angle );\n\n\t\tthis.applyMatrix4( _m1$2 );\n\n\t\treturn this;\n\n\t}\n\n\ttranslate( x, y, z ) {\n\n\t\t// translate geometry\n\n\t\t_m1$2.makeTranslation( x, y, z );\n\n\t\tthis.applyMatrix4( _m1$2 );\n\n\t\treturn this;\n\n\t}\n\n\tscale( x, y, z ) {\n\n\t\t// scale geometry\n\n\t\t_m1$2.makeScale( x, y, z );\n\n\t\tthis.applyMatrix4( _m1$2 );\n\n\t\treturn this;\n\n\t}\n\n\tlookAt( vector ) {\n\n\t\t_obj.lookAt( vector );\n\n\t\t_obj.updateMatrix();\n\n\t\tthis.applyMatrix4( _obj.matrix );\n\n\t\treturn this;\n\n\t}\n\n\tcenter() {\n\n\t\tthis.computeBoundingBox();\n\n\t\tthis.boundingBox.getCenter( _offset ).negate();\n\n\t\tthis.translate( _offset.x, _offset.y, _offset.z );\n\n\t\treturn this;\n\n\t}\n\n\tsetFromPoints( points ) {\n\n\t\tconst position = [];\n\n\t\tfor ( let i = 0, l = points.length; i < l; i ++ ) {\n\n\t\t\tconst point = points[ i ];\n\t\t\tposition.push( point.x, point.y, point.z || 0 );\n\n\t\t}\n\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( position, 3 ) );\n\n\t\treturn this;\n\n\t}\n\n\tcomputeBoundingBox() {\n\n\t\tif ( this.boundingBox === null ) {\n\n\t\t\tthis.boundingBox = new Box3();\n\n\t\t}\n\n\t\tconst position = this.attributes.position;\n\t\tconst morphAttributesPosition = this.morphAttributes.position;\n\n\t\tif ( position && position.isGLBufferAttribute ) {\n\n\t\t\tconsole.error( 'THREE.BufferGeometry.computeBoundingBox(): GLBufferAttribute requires a manual bounding box.', this );\n\n\t\t\tthis.boundingBox.set(\n\t\t\t\tnew Vector3( - Infinity, - Infinity, - Infinity ),\n\t\t\t\tnew Vector3( + Infinity, + Infinity, + Infinity )\n\t\t\t);\n\n\t\t\treturn;\n\n\t\t}\n\n\t\tif ( position !== undefined ) {\n\n\t\t\tthis.boundingBox.setFromBufferAttribute( position );\n\n\t\t\t// process morph attributes if present\n\n\t\t\tif ( morphAttributesPosition ) {\n\n\t\t\t\tfor ( let i = 0, il = morphAttributesPosition.length; i < il; i ++ ) {\n\n\t\t\t\t\tconst morphAttribute = morphAttributesPosition[ i ];\n\t\t\t\t\t_box$2.setFromBufferAttribute( morphAttribute );\n\n\t\t\t\t\tif ( this.morphTargetsRelative ) {\n\n\t\t\t\t\t\t_vector$8.addVectors( this.boundingBox.min, _box$2.min );\n\t\t\t\t\t\tthis.boundingBox.expandByPoint( _vector$8 );\n\n\t\t\t\t\t\t_vector$8.addVectors( this.boundingBox.max, _box$2.max );\n\t\t\t\t\t\tthis.boundingBox.expandByPoint( _vector$8 );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tthis.boundingBox.expandByPoint( _box$2.min );\n\t\t\t\t\t\tthis.boundingBox.expandByPoint( _box$2.max );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tthis.boundingBox.makeEmpty();\n\n\t\t}\n\n\t\tif ( isNaN( this.boundingBox.min.x ) || isNaN( this.boundingBox.min.y ) || isNaN( this.boundingBox.min.z ) ) {\n\n\t\t\tconsole.error( 'THREE.BufferGeometry.computeBoundingBox(): Computed min/max have NaN values. The \"position\" attribute is likely to have NaN values.', this );\n\n\t\t}\n\n\t}\n\n\tcomputeBoundingSphere() {\n\n\t\tif ( this.boundingSphere === null ) {\n\n\t\t\tthis.boundingSphere = new Sphere();\n\n\t\t}\n\n\t\tconst position = this.attributes.position;\n\t\tconst morphAttributesPosition = this.morphAttributes.position;\n\n\t\tif ( position && position.isGLBufferAttribute ) {\n\n\t\t\tconsole.error( 'THREE.BufferGeometry.computeBoundingSphere(): GLBufferAttribute requires a manual bounding sphere.', this );\n\n\t\t\tthis.boundingSphere.set( new Vector3(), Infinity );\n\n\t\t\treturn;\n\n\t\t}\n\n\t\tif ( position ) {\n\n\t\t\t// first, find the center of the bounding sphere\n\n\t\t\tconst center = this.boundingSphere.center;\n\n\t\t\t_box$2.setFromBufferAttribute( position );\n\n\t\t\t// process morph attributes if present\n\n\t\t\tif ( morphAttributesPosition ) {\n\n\t\t\t\tfor ( let i = 0, il = morphAttributesPosition.length; i < il; i ++ ) {\n\n\t\t\t\t\tconst morphAttribute = morphAttributesPosition[ i ];\n\t\t\t\t\t_boxMorphTargets.setFromBufferAttribute( morphAttribute );\n\n\t\t\t\t\tif ( this.morphTargetsRelative ) {\n\n\t\t\t\t\t\t_vector$8.addVectors( _box$2.min, _boxMorphTargets.min );\n\t\t\t\t\t\t_box$2.expandByPoint( _vector$8 );\n\n\t\t\t\t\t\t_vector$8.addVectors( _box$2.max, _boxMorphTargets.max );\n\t\t\t\t\t\t_box$2.expandByPoint( _vector$8 );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\t_box$2.expandByPoint( _boxMorphTargets.min );\n\t\t\t\t\t\t_box$2.expandByPoint( _boxMorphTargets.max );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t_box$2.getCenter( center );\n\n\t\t\t// second, try to find a boundingSphere with a radius smaller than the\n\t\t\t// boundingSphere of the boundingBox: sqrt(3) smaller in the best case\n\n\t\t\tlet maxRadiusSq = 0;\n\n\t\t\tfor ( let i = 0, il = position.count; i < il; i ++ ) {\n\n\t\t\t\t_vector$8.fromBufferAttribute( position, i );\n\n\t\t\t\tmaxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( _vector$8 ) );\n\n\t\t\t}\n\n\t\t\t// process morph attributes if present\n\n\t\t\tif ( morphAttributesPosition ) {\n\n\t\t\t\tfor ( let i = 0, il = morphAttributesPosition.length; i < il; i ++ ) {\n\n\t\t\t\t\tconst morphAttribute = morphAttributesPosition[ i ];\n\t\t\t\t\tconst morphTargetsRelative = this.morphTargetsRelative;\n\n\t\t\t\t\tfor ( let j = 0, jl = morphAttribute.count; j < jl; j ++ ) {\n\n\t\t\t\t\t\t_vector$8.fromBufferAttribute( morphAttribute, j );\n\n\t\t\t\t\t\tif ( morphTargetsRelative ) {\n\n\t\t\t\t\t\t\t_offset.fromBufferAttribute( position, j );\n\t\t\t\t\t\t\t_vector$8.add( _offset );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tmaxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( _vector$8 ) );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tthis.boundingSphere.radius = Math.sqrt( maxRadiusSq );\n\n\t\t\tif ( isNaN( this.boundingSphere.radius ) ) {\n\n\t\t\t\tconsole.error( 'THREE.BufferGeometry.computeBoundingSphere(): Computed radius is NaN. The \"position\" attribute is likely to have NaN values.', this );\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\tcomputeTangents() {\n\n\t\tconst index = this.index;\n\t\tconst attributes = this.attributes;\n\n\t\t// based on http://www.terathon.com/code/tangent.html\n\t\t// (per vertex tangents)\n\n\t\tif ( index === null ||\n\t\t\t attributes.position === undefined ||\n\t\t\t attributes.normal === undefined ||\n\t\t\t attributes.uv === undefined ) {\n\n\t\t\tconsole.error( 'THREE.BufferGeometry: .computeTangents() failed. Missing required attributes (index, position, normal or uv)' );\n\t\t\treturn;\n\n\t\t}\n\n\t\tconst positionAttribute = attributes.position;\n\t\tconst normalAttribute = attributes.normal;\n\t\tconst uvAttribute = attributes.uv;\n\n\t\tif ( this.hasAttribute( 'tangent' ) === false ) {\n\n\t\t\tthis.setAttribute( 'tangent', new BufferAttribute( new Float32Array( 4 * positionAttribute.count ), 4 ) );\n\n\t\t}\n\n\t\tconst tangentAttribute = this.getAttribute( 'tangent' );\n\n\t\tconst tan1 = [], tan2 = [];\n\n\t\tfor ( let i = 0; i < positionAttribute.count; i ++ ) {\n\n\t\t\ttan1[ i ] = new Vector3();\n\t\t\ttan2[ i ] = new Vector3();\n\n\t\t}\n\n\t\tconst vA = new Vector3(),\n\t\t\tvB = new Vector3(),\n\t\t\tvC = new Vector3(),\n\n\t\t\tuvA = new Vector2(),\n\t\t\tuvB = new Vector2(),\n\t\t\tuvC = new Vector2(),\n\n\t\t\tsdir = new Vector3(),\n\t\t\ttdir = new Vector3();\n\n\t\tfunction handleTriangle( a, b, c ) {\n\n\t\t\tvA.fromBufferAttribute( positionAttribute, a );\n\t\t\tvB.fromBufferAttribute( positionAttribute, b );\n\t\t\tvC.fromBufferAttribute( positionAttribute, c );\n\n\t\t\tuvA.fromBufferAttribute( uvAttribute, a );\n\t\t\tuvB.fromBufferAttribute( uvAttribute, b );\n\t\t\tuvC.fromBufferAttribute( uvAttribute, c );\n\n\t\t\tvB.sub( vA );\n\t\t\tvC.sub( vA );\n\n\t\t\tuvB.sub( uvA );\n\t\t\tuvC.sub( uvA );\n\n\t\t\tconst r = 1.0 / ( uvB.x * uvC.y - uvC.x * uvB.y );\n\n\t\t\t// silently ignore degenerate uv triangles having coincident or colinear vertices\n\n\t\t\tif ( ! isFinite( r ) ) return;\n\n\t\t\tsdir.copy( vB ).multiplyScalar( uvC.y ).addScaledVector( vC, - uvB.y ).multiplyScalar( r );\n\t\t\ttdir.copy( vC ).multiplyScalar( uvB.x ).addScaledVector( vB, - uvC.x ).multiplyScalar( r );\n\n\t\t\ttan1[ a ].add( sdir );\n\t\t\ttan1[ b ].add( sdir );\n\t\t\ttan1[ c ].add( sdir );\n\n\t\t\ttan2[ a ].add( tdir );\n\t\t\ttan2[ b ].add( tdir );\n\t\t\ttan2[ c ].add( tdir );\n\n\t\t}\n\n\t\tlet groups = this.groups;\n\n\t\tif ( groups.length === 0 ) {\n\n\t\t\tgroups = [ {\n\t\t\t\tstart: 0,\n\t\t\t\tcount: index.count\n\t\t\t} ];\n\n\t\t}\n\n\t\tfor ( let i = 0, il = groups.length; i < il; ++ i ) {\n\n\t\t\tconst group = groups[ i ];\n\n\t\t\tconst start = group.start;\n\t\t\tconst count = group.count;\n\n\t\t\tfor ( let j = start, jl = start + count; j < jl; j += 3 ) {\n\n\t\t\t\thandleTriangle(\n\t\t\t\t\tindex.getX( j + 0 ),\n\t\t\t\t\tindex.getX( j + 1 ),\n\t\t\t\t\tindex.getX( j + 2 )\n\t\t\t\t);\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst tmp = new Vector3(), tmp2 = new Vector3();\n\t\tconst n = new Vector3(), n2 = new Vector3();\n\n\t\tfunction handleVertex( v ) {\n\n\t\t\tn.fromBufferAttribute( normalAttribute, v );\n\t\t\tn2.copy( n );\n\n\t\t\tconst t = tan1[ v ];\n\n\t\t\t// Gram-Schmidt orthogonalize\n\n\t\t\ttmp.copy( t );\n\t\t\ttmp.sub( n.multiplyScalar( n.dot( t ) ) ).normalize();\n\n\t\t\t// Calculate handedness\n\n\t\t\ttmp2.crossVectors( n2, t );\n\t\t\tconst test = tmp2.dot( tan2[ v ] );\n\t\t\tconst w = ( test < 0.0 ) ? - 1.0 : 1.0;\n\n\t\t\ttangentAttribute.setXYZW( v, tmp.x, tmp.y, tmp.z, w );\n\n\t\t}\n\n\t\tfor ( let i = 0, il = groups.length; i < il; ++ i ) {\n\n\t\t\tconst group = groups[ i ];\n\n\t\t\tconst start = group.start;\n\t\t\tconst count = group.count;\n\n\t\t\tfor ( let j = start, jl = start + count; j < jl; j += 3 ) {\n\n\t\t\t\thandleVertex( index.getX( j + 0 ) );\n\t\t\t\thandleVertex( index.getX( j + 1 ) );\n\t\t\t\thandleVertex( index.getX( j + 2 ) );\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\tcomputeVertexNormals() {\n\n\t\tconst index = this.index;\n\t\tconst positionAttribute = this.getAttribute( 'position' );\n\n\t\tif ( positionAttribute !== undefined ) {\n\n\t\t\tlet normalAttribute = this.getAttribute( 'normal' );\n\n\t\t\tif ( normalAttribute === undefined ) {\n\n\t\t\t\tnormalAttribute = new BufferAttribute( new Float32Array( positionAttribute.count * 3 ), 3 );\n\t\t\t\tthis.setAttribute( 'normal', normalAttribute );\n\n\t\t\t} else {\n\n\t\t\t\t// reset existing normals to zero\n\n\t\t\t\tfor ( let i = 0, il = normalAttribute.count; i < il; i ++ ) {\n\n\t\t\t\t\tnormalAttribute.setXYZ( i, 0, 0, 0 );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tconst pA = new Vector3(), pB = new Vector3(), pC = new Vector3();\n\t\t\tconst nA = new Vector3(), nB = new Vector3(), nC = new Vector3();\n\t\t\tconst cb = new Vector3(), ab = new Vector3();\n\n\t\t\t// indexed elements\n\n\t\t\tif ( index ) {\n\n\t\t\t\tfor ( let i = 0, il = index.count; i < il; i += 3 ) {\n\n\t\t\t\t\tconst vA = index.getX( i + 0 );\n\t\t\t\t\tconst vB = index.getX( i + 1 );\n\t\t\t\t\tconst vC = index.getX( i + 2 );\n\n\t\t\t\t\tpA.fromBufferAttribute( positionAttribute, vA );\n\t\t\t\t\tpB.fromBufferAttribute( positionAttribute, vB );\n\t\t\t\t\tpC.fromBufferAttribute( positionAttribute, vC );\n\n\t\t\t\t\tcb.subVectors( pC, pB );\n\t\t\t\t\tab.subVectors( pA, pB );\n\t\t\t\t\tcb.cross( ab );\n\n\t\t\t\t\tnA.fromBufferAttribute( normalAttribute, vA );\n\t\t\t\t\tnB.fromBufferAttribute( normalAttribute, vB );\n\t\t\t\t\tnC.fromBufferAttribute( normalAttribute, vC );\n\n\t\t\t\t\tnA.add( cb );\n\t\t\t\t\tnB.add( cb );\n\t\t\t\t\tnC.add( cb );\n\n\t\t\t\t\tnormalAttribute.setXYZ( vA, nA.x, nA.y, nA.z );\n\t\t\t\t\tnormalAttribute.setXYZ( vB, nB.x, nB.y, nB.z );\n\t\t\t\t\tnormalAttribute.setXYZ( vC, nC.x, nC.y, nC.z );\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\t// non-indexed elements (unconnected triangle soup)\n\n\t\t\t\tfor ( let i = 0, il = positionAttribute.count; i < il; i += 3 ) {\n\n\t\t\t\t\tpA.fromBufferAttribute( positionAttribute, i + 0 );\n\t\t\t\t\tpB.fromBufferAttribute( positionAttribute, i + 1 );\n\t\t\t\t\tpC.fromBufferAttribute( positionAttribute, i + 2 );\n\n\t\t\t\t\tcb.subVectors( pC, pB );\n\t\t\t\t\tab.subVectors( pA, pB );\n\t\t\t\t\tcb.cross( ab );\n\n\t\t\t\t\tnormalAttribute.setXYZ( i + 0, cb.x, cb.y, cb.z );\n\t\t\t\t\tnormalAttribute.setXYZ( i + 1, cb.x, cb.y, cb.z );\n\t\t\t\t\tnormalAttribute.setXYZ( i + 2, cb.x, cb.y, cb.z );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tthis.normalizeNormals();\n\n\t\t\tnormalAttribute.needsUpdate = true;\n\n\t\t}\n\n\t}\n\n\tnormalizeNormals() {\n\n\t\tconst normals = this.attributes.normal;\n\n\t\tfor ( let i = 0, il = normals.count; i < il; i ++ ) {\n\n\t\t\t_vector$8.fromBufferAttribute( normals, i );\n\n\t\t\t_vector$8.normalize();\n\n\t\t\tnormals.setXYZ( i, _vector$8.x, _vector$8.y, _vector$8.z );\n\n\t\t}\n\n\t}\n\n\ttoNonIndexed() {\n\n\t\tfunction convertBufferAttribute( attribute, indices ) {\n\n\t\t\tconst array = attribute.array;\n\t\t\tconst itemSize = attribute.itemSize;\n\t\t\tconst normalized = attribute.normalized;\n\n\t\t\tconst array2 = new array.constructor( indices.length * itemSize );\n\n\t\t\tlet index = 0, index2 = 0;\n\n\t\t\tfor ( let i = 0, l = indices.length; i < l; i ++ ) {\n\n\t\t\t\tif ( attribute.isInterleavedBufferAttribute ) {\n\n\t\t\t\t\tindex = indices[ i ] * attribute.data.stride + attribute.offset;\n\n\t\t\t\t} else {\n\n\t\t\t\t\tindex = indices[ i ] * itemSize;\n\n\t\t\t\t}\n\n\t\t\t\tfor ( let j = 0; j < itemSize; j ++ ) {\n\n\t\t\t\t\tarray2[ index2 ++ ] = array[ index ++ ];\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\treturn new BufferAttribute( array2, itemSize, normalized );\n\n\t\t}\n\n\t\t//\n\n\t\tif ( this.index === null ) {\n\n\t\t\tconsole.warn( 'THREE.BufferGeometry.toNonIndexed(): BufferGeometry is already non-indexed.' );\n\t\t\treturn this;\n\n\t\t}\n\n\t\tconst geometry2 = new BufferGeometry();\n\n\t\tconst indices = this.index.array;\n\t\tconst attributes = this.attributes;\n\n\t\t// attributes\n\n\t\tfor ( const name in attributes ) {\n\n\t\t\tconst attribute = attributes[ name ];\n\n\t\t\tconst newAttribute = convertBufferAttribute( attribute, indices );\n\n\t\t\tgeometry2.setAttribute( name, newAttribute );\n\n\t\t}\n\n\t\t// morph attributes\n\n\t\tconst morphAttributes = this.morphAttributes;\n\n\t\tfor ( const name in morphAttributes ) {\n\n\t\t\tconst morphArray = [];\n\t\t\tconst morphAttribute = morphAttributes[ name ]; // morphAttribute: array of Float32BufferAttributes\n\n\t\t\tfor ( let i = 0, il = morphAttribute.length; i < il; i ++ ) {\n\n\t\t\t\tconst attribute = morphAttribute[ i ];\n\n\t\t\t\tconst newAttribute = convertBufferAttribute( attribute, indices );\n\n\t\t\t\tmorphArray.push( newAttribute );\n\n\t\t\t}\n\n\t\t\tgeometry2.morphAttributes[ name ] = morphArray;\n\n\t\t}\n\n\t\tgeometry2.morphTargetsRelative = this.morphTargetsRelative;\n\n\t\t// groups\n\n\t\tconst groups = this.groups;\n\n\t\tfor ( let i = 0, l = groups.length; i < l; i ++ ) {\n\n\t\t\tconst group = groups[ i ];\n\t\t\tgeometry2.addGroup( group.start, group.count, group.materialIndex );\n\n\t\t}\n\n\t\treturn geometry2;\n\n\t}\n\n\ttoJSON() {\n\n\t\tconst data = {\n\t\t\tmetadata: {\n\t\t\t\tversion: 4.6,\n\t\t\t\ttype: 'BufferGeometry',\n\t\t\t\tgenerator: 'BufferGeometry.toJSON'\n\t\t\t}\n\t\t};\n\n\t\t// standard BufferGeometry serialization\n\n\t\tdata.uuid = this.uuid;\n\t\tdata.type = this.type;\n\t\tif ( this.name !== '' ) data.name = this.name;\n\t\tif ( Object.keys( this.userData ).length > 0 ) data.userData = this.userData;\n\n\t\tif ( this.parameters !== undefined ) {\n\n\t\t\tconst parameters = this.parameters;\n\n\t\t\tfor ( const key in parameters ) {\n\n\t\t\t\tif ( parameters[ key ] !== undefined ) data[ key ] = parameters[ key ];\n\n\t\t\t}\n\n\t\t\treturn data;\n\n\t\t}\n\n\t\t// for simplicity the code assumes attributes are not shared across geometries, see #15811\n\n\t\tdata.data = { attributes: {} };\n\n\t\tconst index = this.index;\n\n\t\tif ( index !== null ) {\n\n\t\t\tdata.data.index = {\n\t\t\t\ttype: index.array.constructor.name,\n\t\t\t\tarray: Array.prototype.slice.call( index.array )\n\t\t\t};\n\n\t\t}\n\n\t\tconst attributes = this.attributes;\n\n\t\tfor ( const key in attributes ) {\n\n\t\t\tconst attribute = attributes[ key ];\n\n\t\t\tdata.data.attributes[ key ] = attribute.toJSON( data.data );\n\n\t\t}\n\n\t\tconst morphAttributes = {};\n\t\tlet hasMorphAttributes = false;\n\n\t\tfor ( const key in this.morphAttributes ) {\n\n\t\t\tconst attributeArray = this.morphAttributes[ key ];\n\n\t\t\tconst array = [];\n\n\t\t\tfor ( let i = 0, il = attributeArray.length; i < il; i ++ ) {\n\n\t\t\t\tconst attribute = attributeArray[ i ];\n\n\t\t\t\tarray.push( attribute.toJSON( data.data ) );\n\n\t\t\t}\n\n\t\t\tif ( array.length > 0 ) {\n\n\t\t\t\tmorphAttributes[ key ] = array;\n\n\t\t\t\thasMorphAttributes = true;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( hasMorphAttributes ) {\n\n\t\t\tdata.data.morphAttributes = morphAttributes;\n\t\t\tdata.data.morphTargetsRelative = this.morphTargetsRelative;\n\n\t\t}\n\n\t\tconst groups = this.groups;\n\n\t\tif ( groups.length > 0 ) {\n\n\t\t\tdata.data.groups = JSON.parse( JSON.stringify( groups ) );\n\n\t\t}\n\n\t\tconst boundingSphere = this.boundingSphere;\n\n\t\tif ( boundingSphere !== null ) {\n\n\t\t\tdata.data.boundingSphere = {\n\t\t\t\tcenter: boundingSphere.center.toArray(),\n\t\t\t\tradius: boundingSphere.radius\n\t\t\t};\n\n\t\t}\n\n\t\treturn data;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n\tcopy( source ) {\n\n\t\t// reset\n\n\t\tthis.index = null;\n\t\tthis.attributes = {};\n\t\tthis.morphAttributes = {};\n\t\tthis.groups = [];\n\t\tthis.boundingBox = null;\n\t\tthis.boundingSphere = null;\n\n\t\t// used for storing cloned, shared data\n\n\t\tconst data = {};\n\n\t\t// name\n\n\t\tthis.name = source.name;\n\n\t\t// index\n\n\t\tconst index = source.index;\n\n\t\tif ( index !== null ) {\n\n\t\t\tthis.setIndex( index.clone( data ) );\n\n\t\t}\n\n\t\t// attributes\n\n\t\tconst attributes = source.attributes;\n\n\t\tfor ( const name in attributes ) {\n\n\t\t\tconst attribute = attributes[ name ];\n\t\t\tthis.setAttribute( name, attribute.clone( data ) );\n\n\t\t}\n\n\t\t// morph attributes\n\n\t\tconst morphAttributes = source.morphAttributes;\n\n\t\tfor ( const name in morphAttributes ) {\n\n\t\t\tconst array = [];\n\t\t\tconst morphAttribute = morphAttributes[ name ]; // morphAttribute: array of Float32BufferAttributes\n\n\t\t\tfor ( let i = 0, l = morphAttribute.length; i < l; i ++ ) {\n\n\t\t\t\tarray.push( morphAttribute[ i ].clone( data ) );\n\n\t\t\t}\n\n\t\t\tthis.morphAttributes[ name ] = array;\n\n\t\t}\n\n\t\tthis.morphTargetsRelative = source.morphTargetsRelative;\n\n\t\t// groups\n\n\t\tconst groups = source.groups;\n\n\t\tfor ( let i = 0, l = groups.length; i < l; i ++ ) {\n\n\t\t\tconst group = groups[ i ];\n\t\t\tthis.addGroup( group.start, group.count, group.materialIndex );\n\n\t\t}\n\n\t\t// bounding box\n\n\t\tconst boundingBox = source.boundingBox;\n\n\t\tif ( boundingBox !== null ) {\n\n\t\t\tthis.boundingBox = boundingBox.clone();\n\n\t\t}\n\n\t\t// bounding sphere\n\n\t\tconst boundingSphere = source.boundingSphere;\n\n\t\tif ( boundingSphere !== null ) {\n\n\t\t\tthis.boundingSphere = boundingSphere.clone();\n\n\t\t}\n\n\t\t// draw range\n\n\t\tthis.drawRange.start = source.drawRange.start;\n\t\tthis.drawRange.count = source.drawRange.count;\n\n\t\t// user data\n\n\t\tthis.userData = source.userData;\n\n\t\treturn this;\n\n\t}\n\n\tdispose() {\n\n\t\tthis.dispatchEvent( { type: 'dispose' } );\n\n\t}\n\n}\n\nconst _inverseMatrix$3 = /*@__PURE__*/ new Matrix4();\nconst _ray$3 = /*@__PURE__*/ new Ray();\nconst _sphere$6 = /*@__PURE__*/ new Sphere();\nconst _sphereHitAt = /*@__PURE__*/ new Vector3();\n\nconst _vA$1 = /*@__PURE__*/ new Vector3();\nconst _vB$1 = /*@__PURE__*/ new Vector3();\nconst _vC$1 = /*@__PURE__*/ new Vector3();\n\nconst _tempA = /*@__PURE__*/ new Vector3();\nconst _morphA = /*@__PURE__*/ new Vector3();\n\nconst _uvA$1 = /*@__PURE__*/ new Vector2();\nconst _uvB$1 = /*@__PURE__*/ new Vector2();\nconst _uvC$1 = /*@__PURE__*/ new Vector2();\n\nconst _normalA = /*@__PURE__*/ new Vector3();\nconst _normalB = /*@__PURE__*/ new Vector3();\nconst _normalC = /*@__PURE__*/ new Vector3();\n\nconst _intersectionPoint = /*@__PURE__*/ new Vector3();\nconst _intersectionPointWorld = /*@__PURE__*/ new Vector3();\n\nclass Mesh extends Object3D {\n\n\tconstructor( geometry = new BufferGeometry(), material = new MeshBasicMaterial() ) {\n\n\t\tsuper();\n\n\t\tthis.isMesh = true;\n\n\t\tthis.type = 'Mesh';\n\n\t\tthis.geometry = geometry;\n\t\tthis.material = material;\n\n\t\tthis.updateMorphTargets();\n\n\t}\n\n\tcopy( source, recursive ) {\n\n\t\tsuper.copy( source, recursive );\n\n\t\tif ( source.morphTargetInfluences !== undefined ) {\n\n\t\t\tthis.morphTargetInfluences = source.morphTargetInfluences.slice();\n\n\t\t}\n\n\t\tif ( source.morphTargetDictionary !== undefined ) {\n\n\t\t\tthis.morphTargetDictionary = Object.assign( {}, source.morphTargetDictionary );\n\n\t\t}\n\n\t\tthis.material = Array.isArray( source.material ) ? source.material.slice() : source.material;\n\t\tthis.geometry = source.geometry;\n\n\t\treturn this;\n\n\t}\n\n\tupdateMorphTargets() {\n\n\t\tconst geometry = this.geometry;\n\n\t\tconst morphAttributes = geometry.morphAttributes;\n\t\tconst keys = Object.keys( morphAttributes );\n\n\t\tif ( keys.length > 0 ) {\n\n\t\t\tconst morphAttribute = morphAttributes[ keys[ 0 ] ];\n\n\t\t\tif ( morphAttribute !== undefined ) {\n\n\t\t\t\tthis.morphTargetInfluences = [];\n\t\t\t\tthis.morphTargetDictionary = {};\n\n\t\t\t\tfor ( let m = 0, ml = morphAttribute.length; m < ml; m ++ ) {\n\n\t\t\t\t\tconst name = morphAttribute[ m ].name || String( m );\n\n\t\t\t\t\tthis.morphTargetInfluences.push( 0 );\n\t\t\t\t\tthis.morphTargetDictionary[ name ] = m;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\tgetVertexPosition( index, target ) {\n\n\t\tconst geometry = this.geometry;\n\t\tconst position = geometry.attributes.position;\n\t\tconst morphPosition = geometry.morphAttributes.position;\n\t\tconst morphTargetsRelative = geometry.morphTargetsRelative;\n\n\t\ttarget.fromBufferAttribute( position, index );\n\n\t\tconst morphInfluences = this.morphTargetInfluences;\n\n\t\tif ( morphPosition && morphInfluences ) {\n\n\t\t\t_morphA.set( 0, 0, 0 );\n\n\t\t\tfor ( let i = 0, il = morphPosition.length; i < il; i ++ ) {\n\n\t\t\t\tconst influence = morphInfluences[ i ];\n\t\t\t\tconst morphAttribute = morphPosition[ i ];\n\n\t\t\t\tif ( influence === 0 ) continue;\n\n\t\t\t\t_tempA.fromBufferAttribute( morphAttribute, index );\n\n\t\t\t\tif ( morphTargetsRelative ) {\n\n\t\t\t\t\t_morphA.addScaledVector( _tempA, influence );\n\n\t\t\t\t} else {\n\n\t\t\t\t\t_morphA.addScaledVector( _tempA.sub( target ), influence );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\ttarget.add( _morphA );\n\n\t\t}\n\n\t\treturn target;\n\n\t}\n\n\traycast( raycaster, intersects ) {\n\n\t\tconst geometry = this.geometry;\n\t\tconst material = this.material;\n\t\tconst matrixWorld = this.matrixWorld;\n\n\t\tif ( material === undefined ) return;\n\n\t\t// test with bounding sphere in world space\n\n\t\tif ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();\n\n\t\t_sphere$6.copy( geometry.boundingSphere );\n\t\t_sphere$6.applyMatrix4( matrixWorld );\n\n\t\t// check distance from ray origin to bounding sphere\n\n\t\t_ray$3.copy( raycaster.ray ).recast( raycaster.near );\n\n\t\tif ( _sphere$6.containsPoint( _ray$3.origin ) === false ) {\n\n\t\t\tif ( _ray$3.intersectSphere( _sphere$6, _sphereHitAt ) === null ) return;\n\n\t\t\tif ( _ray$3.origin.distanceToSquared( _sphereHitAt ) > ( raycaster.far - raycaster.near ) ** 2 ) return;\n\n\t\t}\n\n\t\t// convert ray to local space of mesh\n\n\t\t_inverseMatrix$3.copy( matrixWorld ).invert();\n\t\t_ray$3.copy( raycaster.ray ).applyMatrix4( _inverseMatrix$3 );\n\n\t\t// test with bounding box in local space\n\n\t\tif ( geometry.boundingBox !== null ) {\n\n\t\t\tif ( _ray$3.intersectsBox( geometry.boundingBox ) === false ) return;\n\n\t\t}\n\n\t\t// test for intersections with geometry\n\n\t\tthis._computeIntersections( raycaster, intersects, _ray$3 );\n\n\t}\n\n\t_computeIntersections( raycaster, intersects, rayLocalSpace ) {\n\n\t\tlet intersection;\n\n\t\tconst geometry = this.geometry;\n\t\tconst material = this.material;\n\n\t\tconst index = geometry.index;\n\t\tconst position = geometry.attributes.position;\n\t\tconst uv = geometry.attributes.uv;\n\t\tconst uv1 = geometry.attributes.uv1;\n\t\tconst normal = geometry.attributes.normal;\n\t\tconst groups = geometry.groups;\n\t\tconst drawRange = geometry.drawRange;\n\n\t\tif ( index !== null ) {\n\n\t\t\t// indexed buffer geometry\n\n\t\t\tif ( Array.isArray( material ) ) {\n\n\t\t\t\tfor ( let i = 0, il = groups.length; i < il; i ++ ) {\n\n\t\t\t\t\tconst group = groups[ i ];\n\t\t\t\t\tconst groupMaterial = material[ group.materialIndex ];\n\n\t\t\t\t\tconst start = Math.max( group.start, drawRange.start );\n\t\t\t\t\tconst end = Math.min( index.count, Math.min( ( group.start + group.count ), ( drawRange.start + drawRange.count ) ) );\n\n\t\t\t\t\tfor ( let j = start, jl = end; j < jl; j += 3 ) {\n\n\t\t\t\t\t\tconst a = index.getX( j );\n\t\t\t\t\t\tconst b = index.getX( j + 1 );\n\t\t\t\t\t\tconst c = index.getX( j + 2 );\n\n\t\t\t\t\t\tintersection = checkGeometryIntersection( this, groupMaterial, raycaster, rayLocalSpace, uv, uv1, normal, a, b, c );\n\n\t\t\t\t\t\tif ( intersection ) {\n\n\t\t\t\t\t\t\tintersection.faceIndex = Math.floor( j / 3 ); // triangle number in indexed buffer semantics\n\t\t\t\t\t\t\tintersection.face.materialIndex = group.materialIndex;\n\t\t\t\t\t\t\tintersects.push( intersection );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\tconst start = Math.max( 0, drawRange.start );\n\t\t\t\tconst end = Math.min( index.count, ( drawRange.start + drawRange.count ) );\n\n\t\t\t\tfor ( let i = start, il = end; i < il; i += 3 ) {\n\n\t\t\t\t\tconst a = index.getX( i );\n\t\t\t\t\tconst b = index.getX( i + 1 );\n\t\t\t\t\tconst c = index.getX( i + 2 );\n\n\t\t\t\t\tintersection = checkGeometryIntersection( this, material, raycaster, rayLocalSpace, uv, uv1, normal, a, b, c );\n\n\t\t\t\t\tif ( intersection ) {\n\n\t\t\t\t\t\tintersection.faceIndex = Math.floor( i / 3 ); // triangle number in indexed buffer semantics\n\t\t\t\t\t\tintersects.push( intersection );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} else if ( position !== undefined ) {\n\n\t\t\t// non-indexed buffer geometry\n\n\t\t\tif ( Array.isArray( material ) ) {\n\n\t\t\t\tfor ( let i = 0, il = groups.length; i < il; i ++ ) {\n\n\t\t\t\t\tconst group = groups[ i ];\n\t\t\t\t\tconst groupMaterial = material[ group.materialIndex ];\n\n\t\t\t\t\tconst start = Math.max( group.start, drawRange.start );\n\t\t\t\t\tconst end = Math.min( position.count, Math.min( ( group.start + group.count ), ( drawRange.start + drawRange.count ) ) );\n\n\t\t\t\t\tfor ( let j = start, jl = end; j < jl; j += 3 ) {\n\n\t\t\t\t\t\tconst a = j;\n\t\t\t\t\t\tconst b = j + 1;\n\t\t\t\t\t\tconst c = j + 2;\n\n\t\t\t\t\t\tintersection = checkGeometryIntersection( this, groupMaterial, raycaster, rayLocalSpace, uv, uv1, normal, a, b, c );\n\n\t\t\t\t\t\tif ( intersection ) {\n\n\t\t\t\t\t\t\tintersection.faceIndex = Math.floor( j / 3 ); // triangle number in non-indexed buffer semantics\n\t\t\t\t\t\t\tintersection.face.materialIndex = group.materialIndex;\n\t\t\t\t\t\t\tintersects.push( intersection );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\tconst start = Math.max( 0, drawRange.start );\n\t\t\t\tconst end = Math.min( position.count, ( drawRange.start + drawRange.count ) );\n\n\t\t\t\tfor ( let i = start, il = end; i < il; i += 3 ) {\n\n\t\t\t\t\tconst a = i;\n\t\t\t\t\tconst b = i + 1;\n\t\t\t\t\tconst c = i + 2;\n\n\t\t\t\t\tintersection = checkGeometryIntersection( this, material, raycaster, rayLocalSpace, uv, uv1, normal, a, b, c );\n\n\t\t\t\t\tif ( intersection ) {\n\n\t\t\t\t\t\tintersection.faceIndex = Math.floor( i / 3 ); // triangle number in non-indexed buffer semantics\n\t\t\t\t\t\tintersects.push( intersection );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n}\n\nfunction checkIntersection$1( object, material, raycaster, ray, pA, pB, pC, point ) {\n\n\tlet intersect;\n\n\tif ( material.side === BackSide ) {\n\n\t\tintersect = ray.intersectTriangle( pC, pB, pA, true, point );\n\n\t} else {\n\n\t\tintersect = ray.intersectTriangle( pA, pB, pC, ( material.side === FrontSide ), point );\n\n\t}\n\n\tif ( intersect === null ) return null;\n\n\t_intersectionPointWorld.copy( point );\n\t_intersectionPointWorld.applyMatrix4( object.matrixWorld );\n\n\tconst distance = raycaster.ray.origin.distanceTo( _intersectionPointWorld );\n\n\tif ( distance < raycaster.near || distance > raycaster.far ) return null;\n\n\treturn {\n\t\tdistance: distance,\n\t\tpoint: _intersectionPointWorld.clone(),\n\t\tobject: object\n\t};\n\n}\n\nfunction checkGeometryIntersection( object, material, raycaster, ray, uv, uv1, normal, a, b, c ) {\n\n\tobject.getVertexPosition( a, _vA$1 );\n\tobject.getVertexPosition( b, _vB$1 );\n\tobject.getVertexPosition( c, _vC$1 );\n\n\tconst intersection = checkIntersection$1( object, material, raycaster, ray, _vA$1, _vB$1, _vC$1, _intersectionPoint );\n\n\tif ( intersection ) {\n\n\t\tif ( uv ) {\n\n\t\t\t_uvA$1.fromBufferAttribute( uv, a );\n\t\t\t_uvB$1.fromBufferAttribute( uv, b );\n\t\t\t_uvC$1.fromBufferAttribute( uv, c );\n\n\t\t\tintersection.uv = Triangle.getInterpolation( _intersectionPoint, _vA$1, _vB$1, _vC$1, _uvA$1, _uvB$1, _uvC$1, new Vector2() );\n\n\t\t}\n\n\t\tif ( uv1 ) {\n\n\t\t\t_uvA$1.fromBufferAttribute( uv1, a );\n\t\t\t_uvB$1.fromBufferAttribute( uv1, b );\n\t\t\t_uvC$1.fromBufferAttribute( uv1, c );\n\n\t\t\tintersection.uv1 = Triangle.getInterpolation( _intersectionPoint, _vA$1, _vB$1, _vC$1, _uvA$1, _uvB$1, _uvC$1, new Vector2() );\n\n\t\t}\n\n\t\tif ( normal ) {\n\n\t\t\t_normalA.fromBufferAttribute( normal, a );\n\t\t\t_normalB.fromBufferAttribute( normal, b );\n\t\t\t_normalC.fromBufferAttribute( normal, c );\n\n\t\t\tintersection.normal = Triangle.getInterpolation( _intersectionPoint, _vA$1, _vB$1, _vC$1, _normalA, _normalB, _normalC, new Vector3() );\n\n\t\t\tif ( intersection.normal.dot( ray.direction ) > 0 ) {\n\n\t\t\t\tintersection.normal.multiplyScalar( - 1 );\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst face = {\n\t\t\ta: a,\n\t\t\tb: b,\n\t\t\tc: c,\n\t\t\tnormal: new Vector3(),\n\t\t\tmaterialIndex: 0\n\t\t};\n\n\t\tTriangle.getNormal( _vA$1, _vB$1, _vC$1, face.normal );\n\n\t\tintersection.face = face;\n\n\t}\n\n\treturn intersection;\n\n}\n\nclass BoxGeometry extends BufferGeometry {\n\n\tconstructor( width = 1, height = 1, depth = 1, widthSegments = 1, heightSegments = 1, depthSegments = 1 ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'BoxGeometry';\n\n\t\tthis.parameters = {\n\t\t\twidth: width,\n\t\t\theight: height,\n\t\t\tdepth: depth,\n\t\t\twidthSegments: widthSegments,\n\t\t\theightSegments: heightSegments,\n\t\t\tdepthSegments: depthSegments\n\t\t};\n\n\t\tconst scope = this;\n\n\t\t// segments\n\n\t\twidthSegments = Math.floor( widthSegments );\n\t\theightSegments = Math.floor( heightSegments );\n\t\tdepthSegments = Math.floor( depthSegments );\n\n\t\t// buffers\n\n\t\tconst indices = [];\n\t\tconst vertices = [];\n\t\tconst normals = [];\n\t\tconst uvs = [];\n\n\t\t// helper variables\n\n\t\tlet numberOfVertices = 0;\n\t\tlet groupStart = 0;\n\n\t\t// build each side of the box geometry\n\n\t\tbuildPlane( 'z', 'y', 'x', - 1, - 1, depth, height, width, depthSegments, heightSegments, 0 ); // px\n\t\tbuildPlane( 'z', 'y', 'x', 1, - 1, depth, height, - width, depthSegments, heightSegments, 1 ); // nx\n\t\tbuildPlane( 'x', 'z', 'y', 1, 1, width, depth, height, widthSegments, depthSegments, 2 ); // py\n\t\tbuildPlane( 'x', 'z', 'y', 1, - 1, width, depth, - height, widthSegments, depthSegments, 3 ); // ny\n\t\tbuildPlane( 'x', 'y', 'z', 1, - 1, width, height, depth, widthSegments, heightSegments, 4 ); // pz\n\t\tbuildPlane( 'x', 'y', 'z', - 1, - 1, width, height, - depth, widthSegments, heightSegments, 5 ); // nz\n\n\t\t// build geometry\n\n\t\tthis.setIndex( indices );\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tthis.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );\n\n\t\tfunction buildPlane( u, v, w, udir, vdir, width, height, depth, gridX, gridY, materialIndex ) {\n\n\t\t\tconst segmentWidth = width / gridX;\n\t\t\tconst segmentHeight = height / gridY;\n\n\t\t\tconst widthHalf = width / 2;\n\t\t\tconst heightHalf = height / 2;\n\t\t\tconst depthHalf = depth / 2;\n\n\t\t\tconst gridX1 = gridX + 1;\n\t\t\tconst gridY1 = gridY + 1;\n\n\t\t\tlet vertexCounter = 0;\n\t\t\tlet groupCount = 0;\n\n\t\t\tconst vector = new Vector3();\n\n\t\t\t// generate vertices, normals and uvs\n\n\t\t\tfor ( let iy = 0; iy < gridY1; iy ++ ) {\n\n\t\t\t\tconst y = iy * segmentHeight - heightHalf;\n\n\t\t\t\tfor ( let ix = 0; ix < gridX1; ix ++ ) {\n\n\t\t\t\t\tconst x = ix * segmentWidth - widthHalf;\n\n\t\t\t\t\t// set values to correct vector component\n\n\t\t\t\t\tvector[ u ] = x * udir;\n\t\t\t\t\tvector[ v ] = y * vdir;\n\t\t\t\t\tvector[ w ] = depthHalf;\n\n\t\t\t\t\t// now apply vector to vertex buffer\n\n\t\t\t\t\tvertices.push( vector.x, vector.y, vector.z );\n\n\t\t\t\t\t// set values to correct vector component\n\n\t\t\t\t\tvector[ u ] = 0;\n\t\t\t\t\tvector[ v ] = 0;\n\t\t\t\t\tvector[ w ] = depth > 0 ? 1 : - 1;\n\n\t\t\t\t\t// now apply vector to normal buffer\n\n\t\t\t\t\tnormals.push( vector.x, vector.y, vector.z );\n\n\t\t\t\t\t// uvs\n\n\t\t\t\t\tuvs.push( ix / gridX );\n\t\t\t\t\tuvs.push( 1 - ( iy / gridY ) );\n\n\t\t\t\t\t// counters\n\n\t\t\t\t\tvertexCounter += 1;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// indices\n\n\t\t\t// 1. you need three indices to draw a single face\n\t\t\t// 2. a single segment consists of two faces\n\t\t\t// 3. so we need to generate six (2*3) indices per segment\n\n\t\t\tfor ( let iy = 0; iy < gridY; iy ++ ) {\n\n\t\t\t\tfor ( let ix = 0; ix < gridX; ix ++ ) {\n\n\t\t\t\t\tconst a = numberOfVertices + ix + gridX1 * iy;\n\t\t\t\t\tconst b = numberOfVertices + ix + gridX1 * ( iy + 1 );\n\t\t\t\t\tconst c = numberOfVertices + ( ix + 1 ) + gridX1 * ( iy + 1 );\n\t\t\t\t\tconst d = numberOfVertices + ( ix + 1 ) + gridX1 * iy;\n\n\t\t\t\t\t// faces\n\n\t\t\t\t\tindices.push( a, b, d );\n\t\t\t\t\tindices.push( b, c, d );\n\n\t\t\t\t\t// increase counter\n\n\t\t\t\t\tgroupCount += 6;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// add a group to the geometry. this will ensure multi material support\n\n\t\t\tscope.addGroup( groupStart, groupCount, materialIndex );\n\n\t\t\t// calculate new start value for groups\n\n\t\t\tgroupStart += groupCount;\n\n\t\t\t// update total number of vertices\n\n\t\t\tnumberOfVertices += vertexCounter;\n\n\t\t}\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.parameters = Object.assign( {}, source.parameters );\n\n\t\treturn this;\n\n\t}\n\n\tstatic fromJSON( data ) {\n\n\t\treturn new BoxGeometry( data.width, data.height, data.depth, data.widthSegments, data.heightSegments, data.depthSegments );\n\n\t}\n\n}\n\n/**\n * Uniform Utilities\n */\n\nfunction cloneUniforms( src ) {\n\n\tconst dst = {};\n\n\tfor ( const u in src ) {\n\n\t\tdst[ u ] = {};\n\n\t\tfor ( const p in src[ u ] ) {\n\n\t\t\tconst property = src[ u ][ p ];\n\n\t\t\tif ( property && ( property.isColor ||\n\t\t\t\tproperty.isMatrix3 || property.isMatrix4 ||\n\t\t\t\tproperty.isVector2 || property.isVector3 || property.isVector4 ||\n\t\t\t\tproperty.isTexture || property.isQuaternion ) ) {\n\n\t\t\t\tif ( property.isRenderTargetTexture ) {\n\n\t\t\t\t\tconsole.warn( 'UniformsUtils: Textures of render targets cannot be cloned via cloneUniforms() or mergeUniforms().' );\n\t\t\t\t\tdst[ u ][ p ] = null;\n\n\t\t\t\t} else {\n\n\t\t\t\t\tdst[ u ][ p ] = property.clone();\n\n\t\t\t\t}\n\n\t\t\t} else if ( Array.isArray( property ) ) {\n\n\t\t\t\tdst[ u ][ p ] = property.slice();\n\n\t\t\t} else {\n\n\t\t\t\tdst[ u ][ p ] = property;\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\treturn dst;\n\n}\n\nfunction mergeUniforms( uniforms ) {\n\n\tconst merged = {};\n\n\tfor ( let u = 0; u < uniforms.length; u ++ ) {\n\n\t\tconst tmp = cloneUniforms( uniforms[ u ] );\n\n\t\tfor ( const p in tmp ) {\n\n\t\t\tmerged[ p ] = tmp[ p ];\n\n\t\t}\n\n\t}\n\n\treturn merged;\n\n}\n\nfunction cloneUniformsGroups( src ) {\n\n\tconst dst = [];\n\n\tfor ( let u = 0; u < src.length; u ++ ) {\n\n\t\tdst.push( src[ u ].clone() );\n\n\t}\n\n\treturn dst;\n\n}\n\nfunction getUnlitUniformColorSpace( renderer ) {\n\n\tconst currentRenderTarget = renderer.getRenderTarget();\n\n\tif ( currentRenderTarget === null ) {\n\n\t\t// https://github.com/mrdoob/three.js/pull/23937#issuecomment-1111067398\n\t\treturn renderer.outputColorSpace;\n\n\t}\n\n\t// https://github.com/mrdoob/three.js/issues/27868\n\tif ( currentRenderTarget.isXRRenderTarget === true ) {\n\n\t\treturn currentRenderTarget.texture.colorSpace;\n\n\t}\n\n\treturn ColorManagement.workingColorSpace;\n\n}\n\n// Legacy\n\nconst UniformsUtils = { clone: cloneUniforms, merge: mergeUniforms };\n\nvar default_vertex = \"void main() {\\n\\tgl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );\\n}\";\n\nvar default_fragment = \"void main() {\\n\\tgl_FragColor = vec4( 1.0, 0.0, 0.0, 1.0 );\\n}\";\n\nclass ShaderMaterial extends Material {\n\n\tconstructor( parameters ) {\n\n\t\tsuper();\n\n\t\tthis.isShaderMaterial = true;\n\n\t\tthis.type = 'ShaderMaterial';\n\n\t\tthis.defines = {};\n\t\tthis.uniforms = {};\n\t\tthis.uniformsGroups = [];\n\n\t\tthis.vertexShader = default_vertex;\n\t\tthis.fragmentShader = default_fragment;\n\n\t\tthis.linewidth = 1;\n\n\t\tthis.wireframe = false;\n\t\tthis.wireframeLinewidth = 1;\n\n\t\tthis.fog = false; // set to use scene fog\n\t\tthis.lights = false; // set to use scene lights\n\t\tthis.clipping = false; // set to use user-defined clipping planes\n\n\t\tthis.forceSinglePass = true;\n\n\t\tthis.extensions = {\n\t\t\tclipCullDistance: false, // set to use vertex shader clipping\n\t\t\tmultiDraw: false // set to use vertex shader multi_draw / enable gl_DrawID\n\t\t};\n\n\t\t// When rendered geometry doesn't include these attributes but the material does,\n\t\t// use these default values in WebGL. This avoids errors when buffer data is missing.\n\t\tthis.defaultAttributeValues = {\n\t\t\t'color': [ 1, 1, 1 ],\n\t\t\t'uv': [ 0, 0 ],\n\t\t\t'uv1': [ 0, 0 ]\n\t\t};\n\n\t\tthis.index0AttributeName = undefined;\n\t\tthis.uniformsNeedUpdate = false;\n\n\t\tthis.glslVersion = null;\n\n\t\tif ( parameters !== undefined ) {\n\n\t\t\tthis.setValues( parameters );\n\n\t\t}\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.fragmentShader = source.fragmentShader;\n\t\tthis.vertexShader = source.vertexShader;\n\n\t\tthis.uniforms = cloneUniforms( source.uniforms );\n\t\tthis.uniformsGroups = cloneUniformsGroups( source.uniformsGroups );\n\n\t\tthis.defines = Object.assign( {}, source.defines );\n\n\t\tthis.wireframe = source.wireframe;\n\t\tthis.wireframeLinewidth = source.wireframeLinewidth;\n\n\t\tthis.fog = source.fog;\n\t\tthis.lights = source.lights;\n\t\tthis.clipping = source.clipping;\n\n\t\tthis.extensions = Object.assign( {}, source.extensions );\n\n\t\tthis.glslVersion = source.glslVersion;\n\n\t\treturn this;\n\n\t}\n\n\ttoJSON( meta ) {\n\n\t\tconst data = super.toJSON( meta );\n\n\t\tdata.glslVersion = this.glslVersion;\n\t\tdata.uniforms = {};\n\n\t\tfor ( const name in this.uniforms ) {\n\n\t\t\tconst uniform = this.uniforms[ name ];\n\t\t\tconst value = uniform.value;\n\n\t\t\tif ( value && value.isTexture ) {\n\n\t\t\t\tdata.uniforms[ name ] = {\n\t\t\t\t\ttype: 't',\n\t\t\t\t\tvalue: value.toJSON( meta ).uuid\n\t\t\t\t};\n\n\t\t\t} else if ( value && value.isColor ) {\n\n\t\t\t\tdata.uniforms[ name ] = {\n\t\t\t\t\ttype: 'c',\n\t\t\t\t\tvalue: value.getHex()\n\t\t\t\t};\n\n\t\t\t} else if ( value && value.isVector2 ) {\n\n\t\t\t\tdata.uniforms[ name ] = {\n\t\t\t\t\ttype: 'v2',\n\t\t\t\t\tvalue: value.toArray()\n\t\t\t\t};\n\n\t\t\t} else if ( value && value.isVector3 ) {\n\n\t\t\t\tdata.uniforms[ name ] = {\n\t\t\t\t\ttype: 'v3',\n\t\t\t\t\tvalue: value.toArray()\n\t\t\t\t};\n\n\t\t\t} else if ( value && value.isVector4 ) {\n\n\t\t\t\tdata.uniforms[ name ] = {\n\t\t\t\t\ttype: 'v4',\n\t\t\t\t\tvalue: value.toArray()\n\t\t\t\t};\n\n\t\t\t} else if ( value && value.isMatrix3 ) {\n\n\t\t\t\tdata.uniforms[ name ] = {\n\t\t\t\t\ttype: 'm3',\n\t\t\t\t\tvalue: value.toArray()\n\t\t\t\t};\n\n\t\t\t} else if ( value && value.isMatrix4 ) {\n\n\t\t\t\tdata.uniforms[ name ] = {\n\t\t\t\t\ttype: 'm4',\n\t\t\t\t\tvalue: value.toArray()\n\t\t\t\t};\n\n\t\t\t} else {\n\n\t\t\t\tdata.uniforms[ name ] = {\n\t\t\t\t\tvalue: value\n\t\t\t\t};\n\n\t\t\t\t// note: the array variants v2v, v3v, v4v, m4v and tv are not supported so far\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( Object.keys( this.defines ).length > 0 ) data.defines = this.defines;\n\n\t\tdata.vertexShader = this.vertexShader;\n\t\tdata.fragmentShader = this.fragmentShader;\n\n\t\tdata.lights = this.lights;\n\t\tdata.clipping = this.clipping;\n\n\t\tconst extensions = {};\n\n\t\tfor ( const key in this.extensions ) {\n\n\t\t\tif ( this.extensions[ key ] === true ) extensions[ key ] = true;\n\n\t\t}\n\n\t\tif ( Object.keys( extensions ).length > 0 ) data.extensions = extensions;\n\n\t\treturn data;\n\n\t}\n\n}\n\nclass Camera extends Object3D {\n\n\tconstructor() {\n\n\t\tsuper();\n\n\t\tthis.isCamera = true;\n\n\t\tthis.type = 'Camera';\n\n\t\tthis.matrixWorldInverse = new Matrix4();\n\n\t\tthis.projectionMatrix = new Matrix4();\n\t\tthis.projectionMatrixInverse = new Matrix4();\n\n\t\tthis.coordinateSystem = WebGLCoordinateSystem;\n\n\t}\n\n\tcopy( source, recursive ) {\n\n\t\tsuper.copy( source, recursive );\n\n\t\tthis.matrixWorldInverse.copy( source.matrixWorldInverse );\n\n\t\tthis.projectionMatrix.copy( source.projectionMatrix );\n\t\tthis.projectionMatrixInverse.copy( source.projectionMatrixInverse );\n\n\t\tthis.coordinateSystem = source.coordinateSystem;\n\n\t\treturn this;\n\n\t}\n\n\tgetWorldDirection( target ) {\n\n\t\treturn super.getWorldDirection( target ).negate();\n\n\t}\n\n\tupdateMatrixWorld( force ) {\n\n\t\tsuper.updateMatrixWorld( force );\n\n\t\tthis.matrixWorldInverse.copy( this.matrixWorld ).invert();\n\n\t}\n\n\tupdateWorldMatrix( updateParents, updateChildren ) {\n\n\t\tsuper.updateWorldMatrix( updateParents, updateChildren );\n\n\t\tthis.matrixWorldInverse.copy( this.matrixWorld ).invert();\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n}\n\nconst _v3$1 = /*@__PURE__*/ new Vector3();\nconst _minTarget = /*@__PURE__*/ new Vector2();\nconst _maxTarget = /*@__PURE__*/ new Vector2();\n\n\nclass PerspectiveCamera extends Camera {\n\n\tconstructor( fov = 50, aspect = 1, near = 0.1, far = 2000 ) {\n\n\t\tsuper();\n\n\t\tthis.isPerspectiveCamera = true;\n\n\t\tthis.type = 'PerspectiveCamera';\n\n\t\tthis.fov = fov;\n\t\tthis.zoom = 1;\n\n\t\tthis.near = near;\n\t\tthis.far = far;\n\t\tthis.focus = 10;\n\n\t\tthis.aspect = aspect;\n\t\tthis.view = null;\n\n\t\tthis.filmGauge = 35;\t// width of the film (default in millimeters)\n\t\tthis.filmOffset = 0;\t// horizontal film offset (same unit as gauge)\n\n\t\tthis.updateProjectionMatrix();\n\n\t}\n\n\tcopy( source, recursive ) {\n\n\t\tsuper.copy( source, recursive );\n\n\t\tthis.fov = source.fov;\n\t\tthis.zoom = source.zoom;\n\n\t\tthis.near = source.near;\n\t\tthis.far = source.far;\n\t\tthis.focus = source.focus;\n\n\t\tthis.aspect = source.aspect;\n\t\tthis.view = source.view === null ? null : Object.assign( {}, source.view );\n\n\t\tthis.filmGauge = source.filmGauge;\n\t\tthis.filmOffset = source.filmOffset;\n\n\t\treturn this;\n\n\t}\n\n\t/**\n\t * Sets the FOV by focal length in respect to the current .filmGauge.\n\t *\n\t * The default film gauge is 35, so that the focal length can be specified for\n\t * a 35mm (full frame) camera.\n\t *\n\t * Values for focal length and film gauge must have the same unit.\n\t */\n\tsetFocalLength( focalLength ) {\n\n\t\t/** see {@link http://www.bobatkins.com/photography/technical/field_of_view.html} */\n\t\tconst vExtentSlope = 0.5 * this.getFilmHeight() / focalLength;\n\n\t\tthis.fov = RAD2DEG * 2 * Math.atan( vExtentSlope );\n\t\tthis.updateProjectionMatrix();\n\n\t}\n\n\t/**\n\t * Calculates the focal length from the current .fov and .filmGauge.\n\t */\n\tgetFocalLength() {\n\n\t\tconst vExtentSlope = Math.tan( DEG2RAD * 0.5 * this.fov );\n\n\t\treturn 0.5 * this.getFilmHeight() / vExtentSlope;\n\n\t}\n\n\tgetEffectiveFOV() {\n\n\t\treturn RAD2DEG * 2 * Math.atan(\n\t\t\tMath.tan( DEG2RAD * 0.5 * this.fov ) / this.zoom );\n\n\t}\n\n\tgetFilmWidth() {\n\n\t\t// film not completely covered in portrait format (aspect < 1)\n\t\treturn this.filmGauge * Math.min( this.aspect, 1 );\n\n\t}\n\n\tgetFilmHeight() {\n\n\t\t// film not completely covered in landscape format (aspect > 1)\n\t\treturn this.filmGauge / Math.max( this.aspect, 1 );\n\n\t}\n\n\t/**\n\t * Computes the 2D bounds of the camera's viewable rectangle at a given distance along the viewing direction.\n\t * Sets minTarget and maxTarget to the coordinates of the lower-left and upper-right corners of the view rectangle.\n\t */\n\tgetViewBounds( distance, minTarget, maxTarget ) {\n\n\t\t_v3$1.set( - 1, - 1, 0.5 ).applyMatrix4( this.projectionMatrixInverse );\n\n\t\tminTarget.set( _v3$1.x, _v3$1.y ).multiplyScalar( - distance / _v3$1.z );\n\n\t\t_v3$1.set( 1, 1, 0.5 ).applyMatrix4( this.projectionMatrixInverse );\n\n\t\tmaxTarget.set( _v3$1.x, _v3$1.y ).multiplyScalar( - distance / _v3$1.z );\n\n\t}\n\n\t/**\n\t * Computes the width and height of the camera's viewable rectangle at a given distance along the viewing direction.\n\t * Copies the result into the target Vector2, where x is width and y is height.\n\t */\n\tgetViewSize( distance, target ) {\n\n\t\tthis.getViewBounds( distance, _minTarget, _maxTarget );\n\n\t\treturn target.subVectors( _maxTarget, _minTarget );\n\n\t}\n\n\t/**\n\t * Sets an offset in a larger frustum. This is useful for multi-window or\n\t * multi-monitor/multi-machine setups.\n\t *\n\t * For example, if you have 3x2 monitors and each monitor is 1920x1080 and\n\t * the monitors are in grid like this\n\t *\n\t * +---+---+---+\n\t * | A | B | C |\n\t * +---+---+---+\n\t * | D | E | F |\n\t * +---+---+---+\n\t *\n\t * then for each monitor you would call it like this\n\t *\n\t * const w = 1920;\n\t * const h = 1080;\n\t * const fullWidth = w * 3;\n\t * const fullHeight = h * 2;\n\t *\n\t * --A--\n\t * camera.setViewOffset( fullWidth, fullHeight, w * 0, h * 0, w, h );\n\t * --B--\n\t * camera.setViewOffset( fullWidth, fullHeight, w * 1, h * 0, w, h );\n\t * --C--\n\t * camera.setViewOffset( fullWidth, fullHeight, w * 2, h * 0, w, h );\n\t * --D--\n\t * camera.setViewOffset( fullWidth, fullHeight, w * 0, h * 1, w, h );\n\t * --E--\n\t * camera.setViewOffset( fullWidth, fullHeight, w * 1, h * 1, w, h );\n\t * --F--\n\t * camera.setViewOffset( fullWidth, fullHeight, w * 2, h * 1, w, h );\n\t *\n\t * Note there is no reason monitors have to be the same size or in a grid.\n\t */\n\tsetViewOffset( fullWidth, fullHeight, x, y, width, height ) {\n\n\t\tthis.aspect = fullWidth / fullHeight;\n\n\t\tif ( this.view === null ) {\n\n\t\t\tthis.view = {\n\t\t\t\tenabled: true,\n\t\t\t\tfullWidth: 1,\n\t\t\t\tfullHeight: 1,\n\t\t\t\toffsetX: 0,\n\t\t\t\toffsetY: 0,\n\t\t\t\twidth: 1,\n\t\t\t\theight: 1\n\t\t\t};\n\n\t\t}\n\n\t\tthis.view.enabled = true;\n\t\tthis.view.fullWidth = fullWidth;\n\t\tthis.view.fullHeight = fullHeight;\n\t\tthis.view.offsetX = x;\n\t\tthis.view.offsetY = y;\n\t\tthis.view.width = width;\n\t\tthis.view.height = height;\n\n\t\tthis.updateProjectionMatrix();\n\n\t}\n\n\tclearViewOffset() {\n\n\t\tif ( this.view !== null ) {\n\n\t\t\tthis.view.enabled = false;\n\n\t\t}\n\n\t\tthis.updateProjectionMatrix();\n\n\t}\n\n\tupdateProjectionMatrix() {\n\n\t\tconst near = this.near;\n\t\tlet top = near * Math.tan( DEG2RAD * 0.5 * this.fov ) / this.zoom;\n\t\tlet height = 2 * top;\n\t\tlet width = this.aspect * height;\n\t\tlet left = - 0.5 * width;\n\t\tconst view = this.view;\n\n\t\tif ( this.view !== null && this.view.enabled ) {\n\n\t\t\tconst fullWidth = view.fullWidth,\n\t\t\t\tfullHeight = view.fullHeight;\n\n\t\t\tleft += view.offsetX * width / fullWidth;\n\t\t\ttop -= view.offsetY * height / fullHeight;\n\t\t\twidth *= view.width / fullWidth;\n\t\t\theight *= view.height / fullHeight;\n\n\t\t}\n\n\t\tconst skew = this.filmOffset;\n\t\tif ( skew !== 0 ) left += near * skew / this.getFilmWidth();\n\n\t\tthis.projectionMatrix.makePerspective( left, left + width, top, top - height, near, this.far, this.coordinateSystem );\n\n\t\tthis.projectionMatrixInverse.copy( this.projectionMatrix ).invert();\n\n\t}\n\n\ttoJSON( meta ) {\n\n\t\tconst data = super.toJSON( meta );\n\n\t\tdata.object.fov = this.fov;\n\t\tdata.object.zoom = this.zoom;\n\n\t\tdata.object.near = this.near;\n\t\tdata.object.far = this.far;\n\t\tdata.object.focus = this.focus;\n\n\t\tdata.object.aspect = this.aspect;\n\n\t\tif ( this.view !== null ) data.object.view = Object.assign( {}, this.view );\n\n\t\tdata.object.filmGauge = this.filmGauge;\n\t\tdata.object.filmOffset = this.filmOffset;\n\n\t\treturn data;\n\n\t}\n\n}\n\nconst fov = - 90; // negative fov is not an error\nconst aspect = 1;\n\nclass CubeCamera extends Object3D {\n\n\tconstructor( near, far, renderTarget ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'CubeCamera';\n\n\t\tthis.renderTarget = renderTarget;\n\t\tthis.coordinateSystem = null;\n\t\tthis.activeMipmapLevel = 0;\n\n\t\tconst cameraPX = new PerspectiveCamera( fov, aspect, near, far );\n\t\tcameraPX.layers = this.layers;\n\t\tthis.add( cameraPX );\n\n\t\tconst cameraNX = new PerspectiveCamera( fov, aspect, near, far );\n\t\tcameraNX.layers = this.layers;\n\t\tthis.add( cameraNX );\n\n\t\tconst cameraPY = new PerspectiveCamera( fov, aspect, near, far );\n\t\tcameraPY.layers = this.layers;\n\t\tthis.add( cameraPY );\n\n\t\tconst cameraNY = new PerspectiveCamera( fov, aspect, near, far );\n\t\tcameraNY.layers = this.layers;\n\t\tthis.add( cameraNY );\n\n\t\tconst cameraPZ = new PerspectiveCamera( fov, aspect, near, far );\n\t\tcameraPZ.layers = this.layers;\n\t\tthis.add( cameraPZ );\n\n\t\tconst cameraNZ = new PerspectiveCamera( fov, aspect, near, far );\n\t\tcameraNZ.layers = this.layers;\n\t\tthis.add( cameraNZ );\n\n\t}\n\n\tupdateCoordinateSystem() {\n\n\t\tconst coordinateSystem = this.coordinateSystem;\n\n\t\tconst cameras = this.children.concat();\n\n\t\tconst [ cameraPX, cameraNX, cameraPY, cameraNY, cameraPZ, cameraNZ ] = cameras;\n\n\t\tfor ( const camera of cameras ) this.remove( camera );\n\n\t\tif ( coordinateSystem === WebGLCoordinateSystem ) {\n\n\t\t\tcameraPX.up.set( 0, 1, 0 );\n\t\t\tcameraPX.lookAt( 1, 0, 0 );\n\n\t\t\tcameraNX.up.set( 0, 1, 0 );\n\t\t\tcameraNX.lookAt( - 1, 0, 0 );\n\n\t\t\tcameraPY.up.set( 0, 0, - 1 );\n\t\t\tcameraPY.lookAt( 0, 1, 0 );\n\n\t\t\tcameraNY.up.set( 0, 0, 1 );\n\t\t\tcameraNY.lookAt( 0, - 1, 0 );\n\n\t\t\tcameraPZ.up.set( 0, 1, 0 );\n\t\t\tcameraPZ.lookAt( 0, 0, 1 );\n\n\t\t\tcameraNZ.up.set( 0, 1, 0 );\n\t\t\tcameraNZ.lookAt( 0, 0, - 1 );\n\n\t\t} else if ( coordinateSystem === WebGPUCoordinateSystem ) {\n\n\t\t\tcameraPX.up.set( 0, - 1, 0 );\n\t\t\tcameraPX.lookAt( - 1, 0, 0 );\n\n\t\t\tcameraNX.up.set( 0, - 1, 0 );\n\t\t\tcameraNX.lookAt( 1, 0, 0 );\n\n\t\t\tcameraPY.up.set( 0, 0, 1 );\n\t\t\tcameraPY.lookAt( 0, 1, 0 );\n\n\t\t\tcameraNY.up.set( 0, 0, - 1 );\n\t\t\tcameraNY.lookAt( 0, - 1, 0 );\n\n\t\t\tcameraPZ.up.set( 0, - 1, 0 );\n\t\t\tcameraPZ.lookAt( 0, 0, 1 );\n\n\t\t\tcameraNZ.up.set( 0, - 1, 0 );\n\t\t\tcameraNZ.lookAt( 0, 0, - 1 );\n\n\t\t} else {\n\n\t\t\tthrow new Error( 'THREE.CubeCamera.updateCoordinateSystem(): Invalid coordinate system: ' + coordinateSystem );\n\n\t\t}\n\n\t\tfor ( const camera of cameras ) {\n\n\t\t\tthis.add( camera );\n\n\t\t\tcamera.updateMatrixWorld();\n\n\t\t}\n\n\t}\n\n\tupdate( renderer, scene ) {\n\n\t\tif ( this.parent === null ) this.updateMatrixWorld();\n\n\t\tconst { renderTarget, activeMipmapLevel } = this;\n\n\t\tif ( this.coordinateSystem !== renderer.coordinateSystem ) {\n\n\t\t\tthis.coordinateSystem = renderer.coordinateSystem;\n\n\t\t\tthis.updateCoordinateSystem();\n\n\t\t}\n\n\t\tconst [ cameraPX, cameraNX, cameraPY, cameraNY, cameraPZ, cameraNZ ] = this.children;\n\n\t\tconst currentRenderTarget = renderer.getRenderTarget();\n\t\tconst currentActiveCubeFace = renderer.getActiveCubeFace();\n\t\tconst currentActiveMipmapLevel = renderer.getActiveMipmapLevel();\n\n\t\tconst currentXrEnabled = renderer.xr.enabled;\n\n\t\trenderer.xr.enabled = false;\n\n\t\tconst generateMipmaps = renderTarget.texture.generateMipmaps;\n\n\t\trenderTarget.texture.generateMipmaps = false;\n\n\t\trenderer.setRenderTarget( renderTarget, 0, activeMipmapLevel );\n\t\trenderer.render( scene, cameraPX );\n\n\t\trenderer.setRenderTarget( renderTarget, 1, activeMipmapLevel );\n\t\trenderer.render( scene, cameraNX );\n\n\t\trenderer.setRenderTarget( renderTarget, 2, activeMipmapLevel );\n\t\trenderer.render( scene, cameraPY );\n\n\t\trenderer.setRenderTarget( renderTarget, 3, activeMipmapLevel );\n\t\trenderer.render( scene, cameraNY );\n\n\t\trenderer.setRenderTarget( renderTarget, 4, activeMipmapLevel );\n\t\trenderer.render( scene, cameraPZ );\n\n\t\t// mipmaps are generated during the last call of render()\n\t\t// at this point, all sides of the cube render target are defined\n\n\t\trenderTarget.texture.generateMipmaps = generateMipmaps;\n\n\t\trenderer.setRenderTarget( renderTarget, 5, activeMipmapLevel );\n\t\trenderer.render( scene, cameraNZ );\n\n\t\trenderer.setRenderTarget( currentRenderTarget, currentActiveCubeFace, currentActiveMipmapLevel );\n\n\t\trenderer.xr.enabled = currentXrEnabled;\n\n\t\trenderTarget.texture.needsPMREMUpdate = true;\n\n\t}\n\n}\n\nclass CubeTexture extends Texture {\n\n\tconstructor( images, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, colorSpace ) {\n\n\t\timages = images !== undefined ? images : [];\n\t\tmapping = mapping !== undefined ? mapping : CubeReflectionMapping;\n\n\t\tsuper( images, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, colorSpace );\n\n\t\tthis.isCubeTexture = true;\n\n\t\tthis.flipY = false;\n\n\t}\n\n\tget images() {\n\n\t\treturn this.image;\n\n\t}\n\n\tset images( value ) {\n\n\t\tthis.image = value;\n\n\t}\n\n}\n\nclass WebGLCubeRenderTarget extends WebGLRenderTarget {\n\n\tconstructor( size = 1, options = {} ) {\n\n\t\tsuper( size, size, options );\n\n\t\tthis.isWebGLCubeRenderTarget = true;\n\n\t\tconst image = { width: size, height: size, depth: 1 };\n\t\tconst images = [ image, image, image, image, image, image ];\n\n\t\tthis.texture = new CubeTexture( images, options.mapping, options.wrapS, options.wrapT, options.magFilter, options.minFilter, options.format, options.type, options.anisotropy, options.colorSpace );\n\n\t\t// By convention -- likely based on the RenderMan spec from the 1990's -- cube maps are specified by WebGL (and three.js)\n\t\t// in a coordinate system in which positive-x is to the right when looking up the positive-z axis -- in other words,\n\t\t// in a left-handed coordinate system. By continuing this convention, preexisting cube maps continued to render correctly.\n\n\t\t// three.js uses a right-handed coordinate system. So environment maps used in three.js appear to have px and nx swapped\n\t\t// and the flag isRenderTargetTexture controls this conversion. The flip is not required when using WebGLCubeRenderTarget.texture\n\t\t// as a cube texture (this is detected when isRenderTargetTexture is set to true for cube textures).\n\n\t\tthis.texture.isRenderTargetTexture = true;\n\n\t\tthis.texture.generateMipmaps = options.generateMipmaps !== undefined ? options.generateMipmaps : false;\n\t\tthis.texture.minFilter = options.minFilter !== undefined ? options.minFilter : LinearFilter;\n\n\t}\n\n\tfromEquirectangularTexture( renderer, texture ) {\n\n\t\tthis.texture.type = texture.type;\n\t\tthis.texture.colorSpace = texture.colorSpace;\n\n\t\tthis.texture.generateMipmaps = texture.generateMipmaps;\n\t\tthis.texture.minFilter = texture.minFilter;\n\t\tthis.texture.magFilter = texture.magFilter;\n\n\t\tconst shader = {\n\n\t\t\tuniforms: {\n\t\t\t\ttEquirect: { value: null },\n\t\t\t},\n\n\t\t\tvertexShader: /* glsl */`\n\n\t\t\t\tvarying vec3 vWorldDirection;\n\n\t\t\t\tvec3 transformDirection( in vec3 dir, in mat4 matrix ) {\n\n\t\t\t\t\treturn normalize( ( matrix * vec4( dir, 0.0 ) ).xyz );\n\n\t\t\t\t}\n\n\t\t\t\tvoid main() {\n\n\t\t\t\t\tvWorldDirection = transformDirection( position, modelMatrix );\n\n\t\t\t\t\t#include \n\t\t\t\t\t#include \n\n\t\t\t\t}\n\t\t\t`,\n\n\t\t\tfragmentShader: /* glsl */`\n\n\t\t\t\tuniform sampler2D tEquirect;\n\n\t\t\t\tvarying vec3 vWorldDirection;\n\n\t\t\t\t#include \n\n\t\t\t\tvoid main() {\n\n\t\t\t\t\tvec3 direction = normalize( vWorldDirection );\n\n\t\t\t\t\tvec2 sampleUV = equirectUv( direction );\n\n\t\t\t\t\tgl_FragColor = texture2D( tEquirect, sampleUV );\n\n\t\t\t\t}\n\t\t\t`\n\t\t};\n\n\t\tconst geometry = new BoxGeometry( 5, 5, 5 );\n\n\t\tconst material = new ShaderMaterial( {\n\n\t\t\tname: 'CubemapFromEquirect',\n\n\t\t\tuniforms: cloneUniforms( shader.uniforms ),\n\t\t\tvertexShader: shader.vertexShader,\n\t\t\tfragmentShader: shader.fragmentShader,\n\t\t\tside: BackSide,\n\t\t\tblending: NoBlending\n\n\t\t} );\n\n\t\tmaterial.uniforms.tEquirect.value = texture;\n\n\t\tconst mesh = new Mesh( geometry, material );\n\n\t\tconst currentMinFilter = texture.minFilter;\n\n\t\t// Avoid blurred poles\n\t\tif ( texture.minFilter === LinearMipmapLinearFilter ) texture.minFilter = LinearFilter;\n\n\t\tconst camera = new CubeCamera( 1, 10, this );\n\t\tcamera.update( renderer, mesh );\n\n\t\ttexture.minFilter = currentMinFilter;\n\n\t\tmesh.geometry.dispose();\n\t\tmesh.material.dispose();\n\n\t\treturn this;\n\n\t}\n\n\tclear( renderer, color, depth, stencil ) {\n\n\t\tconst currentRenderTarget = renderer.getRenderTarget();\n\n\t\tfor ( let i = 0; i < 6; i ++ ) {\n\n\t\t\trenderer.setRenderTarget( this, i );\n\n\t\t\trenderer.clear( color, depth, stencil );\n\n\t\t}\n\n\t\trenderer.setRenderTarget( currentRenderTarget );\n\n\t}\n\n}\n\nconst _vector1 = /*@__PURE__*/ new Vector3();\nconst _vector2 = /*@__PURE__*/ new Vector3();\nconst _normalMatrix = /*@__PURE__*/ new Matrix3();\n\nclass Plane {\n\n\tconstructor( normal = new Vector3( 1, 0, 0 ), constant = 0 ) {\n\n\t\tthis.isPlane = true;\n\n\t\t// normal is assumed to be normalized\n\n\t\tthis.normal = normal;\n\t\tthis.constant = constant;\n\n\t}\n\n\tset( normal, constant ) {\n\n\t\tthis.normal.copy( normal );\n\t\tthis.constant = constant;\n\n\t\treturn this;\n\n\t}\n\n\tsetComponents( x, y, z, w ) {\n\n\t\tthis.normal.set( x, y, z );\n\t\tthis.constant = w;\n\n\t\treturn this;\n\n\t}\n\n\tsetFromNormalAndCoplanarPoint( normal, point ) {\n\n\t\tthis.normal.copy( normal );\n\t\tthis.constant = - point.dot( this.normal );\n\n\t\treturn this;\n\n\t}\n\n\tsetFromCoplanarPoints( a, b, c ) {\n\n\t\tconst normal = _vector1.subVectors( c, b ).cross( _vector2.subVectors( a, b ) ).normalize();\n\n\t\t// Q: should an error be thrown if normal is zero (e.g. degenerate plane)?\n\n\t\tthis.setFromNormalAndCoplanarPoint( normal, a );\n\n\t\treturn this;\n\n\t}\n\n\tcopy( plane ) {\n\n\t\tthis.normal.copy( plane.normal );\n\t\tthis.constant = plane.constant;\n\n\t\treturn this;\n\n\t}\n\n\tnormalize() {\n\n\t\t// Note: will lead to a divide by zero if the plane is invalid.\n\n\t\tconst inverseNormalLength = 1.0 / this.normal.length();\n\t\tthis.normal.multiplyScalar( inverseNormalLength );\n\t\tthis.constant *= inverseNormalLength;\n\n\t\treturn this;\n\n\t}\n\n\tnegate() {\n\n\t\tthis.constant *= - 1;\n\t\tthis.normal.negate();\n\n\t\treturn this;\n\n\t}\n\n\tdistanceToPoint( point ) {\n\n\t\treturn this.normal.dot( point ) + this.constant;\n\n\t}\n\n\tdistanceToSphere( sphere ) {\n\n\t\treturn this.distanceToPoint( sphere.center ) - sphere.radius;\n\n\t}\n\n\tprojectPoint( point, target ) {\n\n\t\treturn target.copy( point ).addScaledVector( this.normal, - this.distanceToPoint( point ) );\n\n\t}\n\n\tintersectLine( line, target ) {\n\n\t\tconst direction = line.delta( _vector1 );\n\n\t\tconst denominator = this.normal.dot( direction );\n\n\t\tif ( denominator === 0 ) {\n\n\t\t\t// line is coplanar, return origin\n\t\t\tif ( this.distanceToPoint( line.start ) === 0 ) {\n\n\t\t\t\treturn target.copy( line.start );\n\n\t\t\t}\n\n\t\t\t// Unsure if this is the correct method to handle this case.\n\t\t\treturn null;\n\n\t\t}\n\n\t\tconst t = - ( line.start.dot( this.normal ) + this.constant ) / denominator;\n\n\t\tif ( t < 0 || t > 1 ) {\n\n\t\t\treturn null;\n\n\t\t}\n\n\t\treturn target.copy( line.start ).addScaledVector( direction, t );\n\n\t}\n\n\tintersectsLine( line ) {\n\n\t\t// Note: this tests if a line intersects the plane, not whether it (or its end-points) are coplanar with it.\n\n\t\tconst startSign = this.distanceToPoint( line.start );\n\t\tconst endSign = this.distanceToPoint( line.end );\n\n\t\treturn ( startSign < 0 && endSign > 0 ) || ( endSign < 0 && startSign > 0 );\n\n\t}\n\n\tintersectsBox( box ) {\n\n\t\treturn box.intersectsPlane( this );\n\n\t}\n\n\tintersectsSphere( sphere ) {\n\n\t\treturn sphere.intersectsPlane( this );\n\n\t}\n\n\tcoplanarPoint( target ) {\n\n\t\treturn target.copy( this.normal ).multiplyScalar( - this.constant );\n\n\t}\n\n\tapplyMatrix4( matrix, optionalNormalMatrix ) {\n\n\t\tconst normalMatrix = optionalNormalMatrix || _normalMatrix.getNormalMatrix( matrix );\n\n\t\tconst referencePoint = this.coplanarPoint( _vector1 ).applyMatrix4( matrix );\n\n\t\tconst normal = this.normal.applyMatrix3( normalMatrix ).normalize();\n\n\t\tthis.constant = - referencePoint.dot( normal );\n\n\t\treturn this;\n\n\t}\n\n\ttranslate( offset ) {\n\n\t\tthis.constant -= offset.dot( this.normal );\n\n\t\treturn this;\n\n\t}\n\n\tequals( plane ) {\n\n\t\treturn plane.normal.equals( this.normal ) && ( plane.constant === this.constant );\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n}\n\nconst _sphere$5 = /*@__PURE__*/ new Sphere();\nconst _vector$7 = /*@__PURE__*/ new Vector3();\n\nclass Frustum {\n\n\tconstructor( p0 = new Plane(), p1 = new Plane(), p2 = new Plane(), p3 = new Plane(), p4 = new Plane(), p5 = new Plane() ) {\n\n\t\tthis.planes = [ p0, p1, p2, p3, p4, p5 ];\n\n\t}\n\n\tset( p0, p1, p2, p3, p4, p5 ) {\n\n\t\tconst planes = this.planes;\n\n\t\tplanes[ 0 ].copy( p0 );\n\t\tplanes[ 1 ].copy( p1 );\n\t\tplanes[ 2 ].copy( p2 );\n\t\tplanes[ 3 ].copy( p3 );\n\t\tplanes[ 4 ].copy( p4 );\n\t\tplanes[ 5 ].copy( p5 );\n\n\t\treturn this;\n\n\t}\n\n\tcopy( frustum ) {\n\n\t\tconst planes = this.planes;\n\n\t\tfor ( let i = 0; i < 6; i ++ ) {\n\n\t\t\tplanes[ i ].copy( frustum.planes[ i ] );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tsetFromProjectionMatrix( m, coordinateSystem = WebGLCoordinateSystem ) {\n\n\t\tconst planes = this.planes;\n\t\tconst me = m.elements;\n\t\tconst me0 = me[ 0 ], me1 = me[ 1 ], me2 = me[ 2 ], me3 = me[ 3 ];\n\t\tconst me4 = me[ 4 ], me5 = me[ 5 ], me6 = me[ 6 ], me7 = me[ 7 ];\n\t\tconst me8 = me[ 8 ], me9 = me[ 9 ], me10 = me[ 10 ], me11 = me[ 11 ];\n\t\tconst me12 = me[ 12 ], me13 = me[ 13 ], me14 = me[ 14 ], me15 = me[ 15 ];\n\n\t\tplanes[ 0 ].setComponents( me3 - me0, me7 - me4, me11 - me8, me15 - me12 ).normalize();\n\t\tplanes[ 1 ].setComponents( me3 + me0, me7 + me4, me11 + me8, me15 + me12 ).normalize();\n\t\tplanes[ 2 ].setComponents( me3 + me1, me7 + me5, me11 + me9, me15 + me13 ).normalize();\n\t\tplanes[ 3 ].setComponents( me3 - me1, me7 - me5, me11 - me9, me15 - me13 ).normalize();\n\t\tplanes[ 4 ].setComponents( me3 - me2, me7 - me6, me11 - me10, me15 - me14 ).normalize();\n\n\t\tif ( coordinateSystem === WebGLCoordinateSystem ) {\n\n\t\t\tplanes[ 5 ].setComponents( me3 + me2, me7 + me6, me11 + me10, me15 + me14 ).normalize();\n\n\t\t} else if ( coordinateSystem === WebGPUCoordinateSystem ) {\n\n\t\t\tplanes[ 5 ].setComponents( me2, me6, me10, me14 ).normalize();\n\n\t\t} else {\n\n\t\t\tthrow new Error( 'THREE.Frustum.setFromProjectionMatrix(): Invalid coordinate system: ' + coordinateSystem );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tintersectsObject( object ) {\n\n\t\tif ( object.boundingSphere !== undefined ) {\n\n\t\t\tif ( object.boundingSphere === null ) object.computeBoundingSphere();\n\n\t\t\t_sphere$5.copy( object.boundingSphere ).applyMatrix4( object.matrixWorld );\n\n\t\t} else {\n\n\t\t\tconst geometry = object.geometry;\n\n\t\t\tif ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();\n\n\t\t\t_sphere$5.copy( geometry.boundingSphere ).applyMatrix4( object.matrixWorld );\n\n\t\t}\n\n\t\treturn this.intersectsSphere( _sphere$5 );\n\n\t}\n\n\tintersectsSprite( sprite ) {\n\n\t\t_sphere$5.center.set( 0, 0, 0 );\n\t\t_sphere$5.radius = 0.7071067811865476;\n\t\t_sphere$5.applyMatrix4( sprite.matrixWorld );\n\n\t\treturn this.intersectsSphere( _sphere$5 );\n\n\t}\n\n\tintersectsSphere( sphere ) {\n\n\t\tconst planes = this.planes;\n\t\tconst center = sphere.center;\n\t\tconst negRadius = - sphere.radius;\n\n\t\tfor ( let i = 0; i < 6; i ++ ) {\n\n\t\t\tconst distance = planes[ i ].distanceToPoint( center );\n\n\t\t\tif ( distance < negRadius ) {\n\n\t\t\t\treturn false;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn true;\n\n\t}\n\n\tintersectsBox( box ) {\n\n\t\tconst planes = this.planes;\n\n\t\tfor ( let i = 0; i < 6; i ++ ) {\n\n\t\t\tconst plane = planes[ i ];\n\n\t\t\t// corner at max distance\n\n\t\t\t_vector$7.x = plane.normal.x > 0 ? box.max.x : box.min.x;\n\t\t\t_vector$7.y = plane.normal.y > 0 ? box.max.y : box.min.y;\n\t\t\t_vector$7.z = plane.normal.z > 0 ? box.max.z : box.min.z;\n\n\t\t\tif ( plane.distanceToPoint( _vector$7 ) < 0 ) {\n\n\t\t\t\treturn false;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn true;\n\n\t}\n\n\tcontainsPoint( point ) {\n\n\t\tconst planes = this.planes;\n\n\t\tfor ( let i = 0; i < 6; i ++ ) {\n\n\t\t\tif ( planes[ i ].distanceToPoint( point ) < 0 ) {\n\n\t\t\t\treturn false;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn true;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n}\n\nfunction WebGLAnimation() {\n\n\tlet context = null;\n\tlet isAnimating = false;\n\tlet animationLoop = null;\n\tlet requestId = null;\n\n\tfunction onAnimationFrame( time, frame ) {\n\n\t\tanimationLoop( time, frame );\n\n\t\trequestId = context.requestAnimationFrame( onAnimationFrame );\n\n\t}\n\n\treturn {\n\n\t\tstart: function () {\n\n\t\t\tif ( isAnimating === true ) return;\n\t\t\tif ( animationLoop === null ) return;\n\n\t\t\trequestId = context.requestAnimationFrame( onAnimationFrame );\n\n\t\t\tisAnimating = true;\n\n\t\t},\n\n\t\tstop: function () {\n\n\t\t\tcontext.cancelAnimationFrame( requestId );\n\n\t\t\tisAnimating = false;\n\n\t\t},\n\n\t\tsetAnimationLoop: function ( callback ) {\n\n\t\t\tanimationLoop = callback;\n\n\t\t},\n\n\t\tsetContext: function ( value ) {\n\n\t\t\tcontext = value;\n\n\t\t}\n\n\t};\n\n}\n\nfunction WebGLAttributes( gl ) {\n\n\tconst buffers = new WeakMap();\n\n\tfunction createBuffer( attribute, bufferType ) {\n\n\t\tconst array = attribute.array;\n\t\tconst usage = attribute.usage;\n\t\tconst size = array.byteLength;\n\n\t\tconst buffer = gl.createBuffer();\n\n\t\tgl.bindBuffer( bufferType, buffer );\n\t\tgl.bufferData( bufferType, array, usage );\n\n\t\tattribute.onUploadCallback();\n\n\t\tlet type;\n\n\t\tif ( array instanceof Float32Array ) {\n\n\t\t\ttype = gl.FLOAT;\n\n\t\t} else if ( array instanceof Uint16Array ) {\n\n\t\t\tif ( attribute.isFloat16BufferAttribute ) {\n\n\t\t\t\ttype = gl.HALF_FLOAT;\n\n\t\t\t} else {\n\n\t\t\t\ttype = gl.UNSIGNED_SHORT;\n\n\t\t\t}\n\n\t\t} else if ( array instanceof Int16Array ) {\n\n\t\t\ttype = gl.SHORT;\n\n\t\t} else if ( array instanceof Uint32Array ) {\n\n\t\t\ttype = gl.UNSIGNED_INT;\n\n\t\t} else if ( array instanceof Int32Array ) {\n\n\t\t\ttype = gl.INT;\n\n\t\t} else if ( array instanceof Int8Array ) {\n\n\t\t\ttype = gl.BYTE;\n\n\t\t} else if ( array instanceof Uint8Array ) {\n\n\t\t\ttype = gl.UNSIGNED_BYTE;\n\n\t\t} else if ( array instanceof Uint8ClampedArray ) {\n\n\t\t\ttype = gl.UNSIGNED_BYTE;\n\n\t\t} else {\n\n\t\t\tthrow new Error( 'THREE.WebGLAttributes: Unsupported buffer data format: ' + array );\n\n\t\t}\n\n\t\treturn {\n\t\t\tbuffer: buffer,\n\t\t\ttype: type,\n\t\t\tbytesPerElement: array.BYTES_PER_ELEMENT,\n\t\t\tversion: attribute.version,\n\t\t\tsize: size\n\t\t};\n\n\t}\n\n\tfunction updateBuffer( buffer, attribute, bufferType ) {\n\n\t\tconst array = attribute.array;\n\t\tconst updateRange = attribute._updateRange; // @deprecated, r159\n\t\tconst updateRanges = attribute.updateRanges;\n\n\t\tgl.bindBuffer( bufferType, buffer );\n\n\t\tif ( updateRange.count === - 1 && updateRanges.length === 0 ) {\n\n\t\t\t// Not using update ranges\n\t\t\tgl.bufferSubData( bufferType, 0, array );\n\n\t\t}\n\n\t\tif ( updateRanges.length !== 0 ) {\n\n\t\t\tfor ( let i = 0, l = updateRanges.length; i < l; i ++ ) {\n\n\t\t\t\tconst range = updateRanges[ i ];\n\n\t\t\t\tgl.bufferSubData( bufferType, range.start * array.BYTES_PER_ELEMENT,\n\t\t\t\t\tarray, range.start, range.count );\n\n\t\t\t}\n\n\t\t\tattribute.clearUpdateRanges();\n\n\t\t}\n\n\t\t// @deprecated, r159\n\t\tif ( updateRange.count !== - 1 ) {\n\n\t\t\tgl.bufferSubData( bufferType, updateRange.offset * array.BYTES_PER_ELEMENT,\n\t\t\t\tarray, updateRange.offset, updateRange.count );\n\n\t\t\tupdateRange.count = - 1; // reset range\n\n\t\t}\n\n\t\tattribute.onUploadCallback();\n\n\t}\n\n\t//\n\n\tfunction get( attribute ) {\n\n\t\tif ( attribute.isInterleavedBufferAttribute ) attribute = attribute.data;\n\n\t\treturn buffers.get( attribute );\n\n\t}\n\n\tfunction remove( attribute ) {\n\n\t\tif ( attribute.isInterleavedBufferAttribute ) attribute = attribute.data;\n\n\t\tconst data = buffers.get( attribute );\n\n\t\tif ( data ) {\n\n\t\t\tgl.deleteBuffer( data.buffer );\n\n\t\t\tbuffers.delete( attribute );\n\n\t\t}\n\n\t}\n\n\tfunction update( attribute, bufferType ) {\n\n\t\tif ( attribute.isGLBufferAttribute ) {\n\n\t\t\tconst cached = buffers.get( attribute );\n\n\t\t\tif ( ! cached || cached.version < attribute.version ) {\n\n\t\t\t\tbuffers.set( attribute, {\n\t\t\t\t\tbuffer: attribute.buffer,\n\t\t\t\t\ttype: attribute.type,\n\t\t\t\t\tbytesPerElement: attribute.elementSize,\n\t\t\t\t\tversion: attribute.version\n\t\t\t\t} );\n\n\t\t\t}\n\n\t\t\treturn;\n\n\t\t}\n\n\t\tif ( attribute.isInterleavedBufferAttribute ) attribute = attribute.data;\n\n\t\tconst data = buffers.get( attribute );\n\n\t\tif ( data === undefined ) {\n\n\t\t\tbuffers.set( attribute, createBuffer( attribute, bufferType ) );\n\n\t\t} else if ( data.version < attribute.version ) {\n\n\t\t\tif ( data.size !== attribute.array.byteLength ) {\n\n\t\t\t\tthrow new Error( 'THREE.WebGLAttributes: The size of the buffer attribute\\'s array buffer does not match the original size. Resizing buffer attributes is not supported.' );\n\n\t\t\t}\n\n\t\t\tupdateBuffer( data.buffer, attribute, bufferType );\n\n\t\t\tdata.version = attribute.version;\n\n\t\t}\n\n\t}\n\n\treturn {\n\n\t\tget: get,\n\t\tremove: remove,\n\t\tupdate: update\n\n\t};\n\n}\n\nclass PlaneGeometry extends BufferGeometry {\n\n\tconstructor( width = 1, height = 1, widthSegments = 1, heightSegments = 1 ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'PlaneGeometry';\n\n\t\tthis.parameters = {\n\t\t\twidth: width,\n\t\t\theight: height,\n\t\t\twidthSegments: widthSegments,\n\t\t\theightSegments: heightSegments\n\t\t};\n\n\t\tconst width_half = width / 2;\n\t\tconst height_half = height / 2;\n\n\t\tconst gridX = Math.floor( widthSegments );\n\t\tconst gridY = Math.floor( heightSegments );\n\n\t\tconst gridX1 = gridX + 1;\n\t\tconst gridY1 = gridY + 1;\n\n\t\tconst segment_width = width / gridX;\n\t\tconst segment_height = height / gridY;\n\n\t\t//\n\n\t\tconst indices = [];\n\t\tconst vertices = [];\n\t\tconst normals = [];\n\t\tconst uvs = [];\n\n\t\tfor ( let iy = 0; iy < gridY1; iy ++ ) {\n\n\t\t\tconst y = iy * segment_height - height_half;\n\n\t\t\tfor ( let ix = 0; ix < gridX1; ix ++ ) {\n\n\t\t\t\tconst x = ix * segment_width - width_half;\n\n\t\t\t\tvertices.push( x, - y, 0 );\n\n\t\t\t\tnormals.push( 0, 0, 1 );\n\n\t\t\t\tuvs.push( ix / gridX );\n\t\t\t\tuvs.push( 1 - ( iy / gridY ) );\n\n\t\t\t}\n\n\t\t}\n\n\t\tfor ( let iy = 0; iy < gridY; iy ++ ) {\n\n\t\t\tfor ( let ix = 0; ix < gridX; ix ++ ) {\n\n\t\t\t\tconst a = ix + gridX1 * iy;\n\t\t\t\tconst b = ix + gridX1 * ( iy + 1 );\n\t\t\t\tconst c = ( ix + 1 ) + gridX1 * ( iy + 1 );\n\t\t\t\tconst d = ( ix + 1 ) + gridX1 * iy;\n\n\t\t\t\tindices.push( a, b, d );\n\t\t\t\tindices.push( b, c, d );\n\n\t\t\t}\n\n\t\t}\n\n\t\tthis.setIndex( indices );\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tthis.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.parameters = Object.assign( {}, source.parameters );\n\n\t\treturn this;\n\n\t}\n\n\tstatic fromJSON( data ) {\n\n\t\treturn new PlaneGeometry( data.width, data.height, data.widthSegments, data.heightSegments );\n\n\t}\n\n}\n\nvar alphahash_fragment = \"#ifdef USE_ALPHAHASH\\n\\tif ( diffuseColor.a < getAlphaHashThreshold( vPosition ) ) discard;\\n#endif\";\n\nvar alphahash_pars_fragment = \"#ifdef USE_ALPHAHASH\\n\\tconst float ALPHA_HASH_SCALE = 0.05;\\n\\tfloat hash2D( vec2 value ) {\\n\\t\\treturn fract( 1.0e4 * sin( 17.0 * value.x + 0.1 * value.y ) * ( 0.1 + abs( sin( 13.0 * value.y + value.x ) ) ) );\\n\\t}\\n\\tfloat hash3D( vec3 value ) {\\n\\t\\treturn hash2D( vec2( hash2D( value.xy ), value.z ) );\\n\\t}\\n\\tfloat getAlphaHashThreshold( vec3 position ) {\\n\\t\\tfloat maxDeriv = max(\\n\\t\\t\\tlength( dFdx( position.xyz ) ),\\n\\t\\t\\tlength( dFdy( position.xyz ) )\\n\\t\\t);\\n\\t\\tfloat pixScale = 1.0 / ( ALPHA_HASH_SCALE * maxDeriv );\\n\\t\\tvec2 pixScales = vec2(\\n\\t\\t\\texp2( floor( log2( pixScale ) ) ),\\n\\t\\t\\texp2( ceil( log2( pixScale ) ) )\\n\\t\\t);\\n\\t\\tvec2 alpha = vec2(\\n\\t\\t\\thash3D( floor( pixScales.x * position.xyz ) ),\\n\\t\\t\\thash3D( floor( pixScales.y * position.xyz ) )\\n\\t\\t);\\n\\t\\tfloat lerpFactor = fract( log2( pixScale ) );\\n\\t\\tfloat x = ( 1.0 - lerpFactor ) * alpha.x + lerpFactor * alpha.y;\\n\\t\\tfloat a = min( lerpFactor, 1.0 - lerpFactor );\\n\\t\\tvec3 cases = vec3(\\n\\t\\t\\tx * x / ( 2.0 * a * ( 1.0 - a ) ),\\n\\t\\t\\t( x - 0.5 * a ) / ( 1.0 - a ),\\n\\t\\t\\t1.0 - ( ( 1.0 - x ) * ( 1.0 - x ) / ( 2.0 * a * ( 1.0 - a ) ) )\\n\\t\\t);\\n\\t\\tfloat threshold = ( x < ( 1.0 - a ) )\\n\\t\\t\\t? ( ( x < a ) ? cases.x : cases.y )\\n\\t\\t\\t: cases.z;\\n\\t\\treturn clamp( threshold , 1.0e-6, 1.0 );\\n\\t}\\n#endif\";\n\nvar alphamap_fragment = \"#ifdef USE_ALPHAMAP\\n\\tdiffuseColor.a *= texture2D( alphaMap, vAlphaMapUv ).g;\\n#endif\";\n\nvar alphamap_pars_fragment = \"#ifdef USE_ALPHAMAP\\n\\tuniform sampler2D alphaMap;\\n#endif\";\n\nvar alphatest_fragment = \"#ifdef USE_ALPHATEST\\n\\t#ifdef ALPHA_TO_COVERAGE\\n\\tdiffuseColor.a = smoothstep( alphaTest, alphaTest + fwidth( diffuseColor.a ), diffuseColor.a );\\n\\tif ( diffuseColor.a == 0.0 ) discard;\\n\\t#else\\n\\tif ( diffuseColor.a < alphaTest ) discard;\\n\\t#endif\\n#endif\";\n\nvar alphatest_pars_fragment = \"#ifdef USE_ALPHATEST\\n\\tuniform float alphaTest;\\n#endif\";\n\nvar aomap_fragment = \"#ifdef USE_AOMAP\\n\\tfloat ambientOcclusion = ( texture2D( aoMap, vAoMapUv ).r - 1.0 ) * aoMapIntensity + 1.0;\\n\\treflectedLight.indirectDiffuse *= ambientOcclusion;\\n\\t#if defined( USE_CLEARCOAT ) \\n\\t\\tclearcoatSpecularIndirect *= ambientOcclusion;\\n\\t#endif\\n\\t#if defined( USE_SHEEN ) \\n\\t\\tsheenSpecularIndirect *= ambientOcclusion;\\n\\t#endif\\n\\t#if defined( USE_ENVMAP ) && defined( STANDARD )\\n\\t\\tfloat dotNV = saturate( dot( geometryNormal, geometryViewDir ) );\\n\\t\\treflectedLight.indirectSpecular *= computeSpecularOcclusion( dotNV, ambientOcclusion, material.roughness );\\n\\t#endif\\n#endif\";\n\nvar aomap_pars_fragment = \"#ifdef USE_AOMAP\\n\\tuniform sampler2D aoMap;\\n\\tuniform float aoMapIntensity;\\n#endif\";\n\nvar batching_pars_vertex = \"#ifdef USE_BATCHING\\n\\tattribute float batchId;\\n\\tuniform highp sampler2D batchingTexture;\\n\\tmat4 getBatchingMatrix( const in float i ) {\\n\\t\\tint size = textureSize( batchingTexture, 0 ).x;\\n\\t\\tint j = int( i ) * 4;\\n\\t\\tint x = j % size;\\n\\t\\tint y = j / size;\\n\\t\\tvec4 v1 = texelFetch( batchingTexture, ivec2( x, y ), 0 );\\n\\t\\tvec4 v2 = texelFetch( batchingTexture, ivec2( x + 1, y ), 0 );\\n\\t\\tvec4 v3 = texelFetch( batchingTexture, ivec2( x + 2, y ), 0 );\\n\\t\\tvec4 v4 = texelFetch( batchingTexture, ivec2( x + 3, y ), 0 );\\n\\t\\treturn mat4( v1, v2, v3, v4 );\\n\\t}\\n#endif\\n#ifdef USE_BATCHING_COLOR\\n\\tuniform sampler2D batchingColorTexture;\\n\\tvec3 getBatchingColor( const in float i ) {\\n\\t\\tint size = textureSize( batchingColorTexture, 0 ).x;\\n\\t\\tint j = int( i );\\n\\t\\tint x = j % size;\\n\\t\\tint y = j / size;\\n\\t\\treturn texelFetch( batchingColorTexture, ivec2( x, y ), 0 ).rgb;\\n\\t}\\n#endif\";\n\nvar batching_vertex = \"#ifdef USE_BATCHING\\n\\tmat4 batchingMatrix = getBatchingMatrix( batchId );\\n#endif\";\n\nvar begin_vertex = \"vec3 transformed = vec3( position );\\n#ifdef USE_ALPHAHASH\\n\\tvPosition = vec3( position );\\n#endif\";\n\nvar beginnormal_vertex = \"vec3 objectNormal = vec3( normal );\\n#ifdef USE_TANGENT\\n\\tvec3 objectTangent = vec3( tangent.xyz );\\n#endif\";\n\nvar bsdfs = \"float G_BlinnPhong_Implicit( ) {\\n\\treturn 0.25;\\n}\\nfloat D_BlinnPhong( const in float shininess, const in float dotNH ) {\\n\\treturn RECIPROCAL_PI * ( shininess * 0.5 + 1.0 ) * pow( dotNH, shininess );\\n}\\nvec3 BRDF_BlinnPhong( const in vec3 lightDir, const in vec3 viewDir, const in vec3 normal, const in vec3 specularColor, const in float shininess ) {\\n\\tvec3 halfDir = normalize( lightDir + viewDir );\\n\\tfloat dotNH = saturate( dot( normal, halfDir ) );\\n\\tfloat dotVH = saturate( dot( viewDir, halfDir ) );\\n\\tvec3 F = F_Schlick( specularColor, 1.0, dotVH );\\n\\tfloat G = G_BlinnPhong_Implicit( );\\n\\tfloat D = D_BlinnPhong( shininess, dotNH );\\n\\treturn F * ( G * D );\\n} // validated\";\n\nvar iridescence_fragment = \"#ifdef USE_IRIDESCENCE\\n\\tconst mat3 XYZ_TO_REC709 = mat3(\\n\\t\\t 3.2404542, -0.9692660, 0.0556434,\\n\\t\\t-1.5371385, 1.8760108, -0.2040259,\\n\\t\\t-0.4985314, 0.0415560, 1.0572252\\n\\t);\\n\\tvec3 Fresnel0ToIor( vec3 fresnel0 ) {\\n\\t\\tvec3 sqrtF0 = sqrt( fresnel0 );\\n\\t\\treturn ( vec3( 1.0 ) + sqrtF0 ) / ( vec3( 1.0 ) - sqrtF0 );\\n\\t}\\n\\tvec3 IorToFresnel0( vec3 transmittedIor, float incidentIor ) {\\n\\t\\treturn pow2( ( transmittedIor - vec3( incidentIor ) ) / ( transmittedIor + vec3( incidentIor ) ) );\\n\\t}\\n\\tfloat IorToFresnel0( float transmittedIor, float incidentIor ) {\\n\\t\\treturn pow2( ( transmittedIor - incidentIor ) / ( transmittedIor + incidentIor ));\\n\\t}\\n\\tvec3 evalSensitivity( float OPD, vec3 shift ) {\\n\\t\\tfloat phase = 2.0 * PI * OPD * 1.0e-9;\\n\\t\\tvec3 val = vec3( 5.4856e-13, 4.4201e-13, 5.2481e-13 );\\n\\t\\tvec3 pos = vec3( 1.6810e+06, 1.7953e+06, 2.2084e+06 );\\n\\t\\tvec3 var = vec3( 4.3278e+09, 9.3046e+09, 6.6121e+09 );\\n\\t\\tvec3 xyz = val * sqrt( 2.0 * PI * var ) * cos( pos * phase + shift ) * exp( - pow2( phase ) * var );\\n\\t\\txyz.x += 9.7470e-14 * sqrt( 2.0 * PI * 4.5282e+09 ) * cos( 2.2399e+06 * phase + shift[ 0 ] ) * exp( - 4.5282e+09 * pow2( phase ) );\\n\\t\\txyz /= 1.0685e-7;\\n\\t\\tvec3 rgb = XYZ_TO_REC709 * xyz;\\n\\t\\treturn rgb;\\n\\t}\\n\\tvec3 evalIridescence( float outsideIOR, float eta2, float cosTheta1, float thinFilmThickness, vec3 baseF0 ) {\\n\\t\\tvec3 I;\\n\\t\\tfloat iridescenceIOR = mix( outsideIOR, eta2, smoothstep( 0.0, 0.03, thinFilmThickness ) );\\n\\t\\tfloat sinTheta2Sq = pow2( outsideIOR / iridescenceIOR ) * ( 1.0 - pow2( cosTheta1 ) );\\n\\t\\tfloat cosTheta2Sq = 1.0 - sinTheta2Sq;\\n\\t\\tif ( cosTheta2Sq < 0.0 ) {\\n\\t\\t\\treturn vec3( 1.0 );\\n\\t\\t}\\n\\t\\tfloat cosTheta2 = sqrt( cosTheta2Sq );\\n\\t\\tfloat R0 = IorToFresnel0( iridescenceIOR, outsideIOR );\\n\\t\\tfloat R12 = F_Schlick( R0, 1.0, cosTheta1 );\\n\\t\\tfloat T121 = 1.0 - R12;\\n\\t\\tfloat phi12 = 0.0;\\n\\t\\tif ( iridescenceIOR < outsideIOR ) phi12 = PI;\\n\\t\\tfloat phi21 = PI - phi12;\\n\\t\\tvec3 baseIOR = Fresnel0ToIor( clamp( baseF0, 0.0, 0.9999 ) );\\t\\tvec3 R1 = IorToFresnel0( baseIOR, iridescenceIOR );\\n\\t\\tvec3 R23 = F_Schlick( R1, 1.0, cosTheta2 );\\n\\t\\tvec3 phi23 = vec3( 0.0 );\\n\\t\\tif ( baseIOR[ 0 ] < iridescenceIOR ) phi23[ 0 ] = PI;\\n\\t\\tif ( baseIOR[ 1 ] < iridescenceIOR ) phi23[ 1 ] = PI;\\n\\t\\tif ( baseIOR[ 2 ] < iridescenceIOR ) phi23[ 2 ] = PI;\\n\\t\\tfloat OPD = 2.0 * iridescenceIOR * thinFilmThickness * cosTheta2;\\n\\t\\tvec3 phi = vec3( phi21 ) + phi23;\\n\\t\\tvec3 R123 = clamp( R12 * R23, 1e-5, 0.9999 );\\n\\t\\tvec3 r123 = sqrt( R123 );\\n\\t\\tvec3 Rs = pow2( T121 ) * R23 / ( vec3( 1.0 ) - R123 );\\n\\t\\tvec3 C0 = R12 + Rs;\\n\\t\\tI = C0;\\n\\t\\tvec3 Cm = Rs - T121;\\n\\t\\tfor ( int m = 1; m <= 2; ++ m ) {\\n\\t\\t\\tCm *= r123;\\n\\t\\t\\tvec3 Sm = 2.0 * evalSensitivity( float( m ) * OPD, float( m ) * phi );\\n\\t\\t\\tI += Cm * Sm;\\n\\t\\t}\\n\\t\\treturn max( I, vec3( 0.0 ) );\\n\\t}\\n#endif\";\n\nvar bumpmap_pars_fragment = \"#ifdef USE_BUMPMAP\\n\\tuniform sampler2D bumpMap;\\n\\tuniform float bumpScale;\\n\\tvec2 dHdxy_fwd() {\\n\\t\\tvec2 dSTdx = dFdx( vBumpMapUv );\\n\\t\\tvec2 dSTdy = dFdy( vBumpMapUv );\\n\\t\\tfloat Hll = bumpScale * texture2D( bumpMap, vBumpMapUv ).x;\\n\\t\\tfloat dBx = bumpScale * texture2D( bumpMap, vBumpMapUv + dSTdx ).x - Hll;\\n\\t\\tfloat dBy = bumpScale * texture2D( bumpMap, vBumpMapUv + dSTdy ).x - Hll;\\n\\t\\treturn vec2( dBx, dBy );\\n\\t}\\n\\tvec3 perturbNormalArb( vec3 surf_pos, vec3 surf_norm, vec2 dHdxy, float faceDirection ) {\\n\\t\\tvec3 vSigmaX = normalize( dFdx( surf_pos.xyz ) );\\n\\t\\tvec3 vSigmaY = normalize( dFdy( surf_pos.xyz ) );\\n\\t\\tvec3 vN = surf_norm;\\n\\t\\tvec3 R1 = cross( vSigmaY, vN );\\n\\t\\tvec3 R2 = cross( vN, vSigmaX );\\n\\t\\tfloat fDet = dot( vSigmaX, R1 ) * faceDirection;\\n\\t\\tvec3 vGrad = sign( fDet ) * ( dHdxy.x * R1 + dHdxy.y * R2 );\\n\\t\\treturn normalize( abs( fDet ) * surf_norm - vGrad );\\n\\t}\\n#endif\";\n\nvar clipping_planes_fragment = \"#if NUM_CLIPPING_PLANES > 0\\n\\tvec4 plane;\\n\\t#ifdef ALPHA_TO_COVERAGE\\n\\t\\tfloat distanceToPlane, distanceGradient;\\n\\t\\tfloat clipOpacity = 1.0;\\n\\t\\t#pragma unroll_loop_start\\n\\t\\tfor ( int i = 0; i < UNION_CLIPPING_PLANES; i ++ ) {\\n\\t\\t\\tplane = clippingPlanes[ i ];\\n\\t\\t\\tdistanceToPlane = - dot( vClipPosition, plane.xyz ) + plane.w;\\n\\t\\t\\tdistanceGradient = fwidth( distanceToPlane ) / 2.0;\\n\\t\\t\\tclipOpacity *= smoothstep( - distanceGradient, distanceGradient, distanceToPlane );\\n\\t\\t\\tif ( clipOpacity == 0.0 ) discard;\\n\\t\\t}\\n\\t\\t#pragma unroll_loop_end\\n\\t\\t#if UNION_CLIPPING_PLANES < NUM_CLIPPING_PLANES\\n\\t\\t\\tfloat unionClipOpacity = 1.0;\\n\\t\\t\\t#pragma unroll_loop_start\\n\\t\\t\\tfor ( int i = UNION_CLIPPING_PLANES; i < NUM_CLIPPING_PLANES; i ++ ) {\\n\\t\\t\\t\\tplane = clippingPlanes[ i ];\\n\\t\\t\\t\\tdistanceToPlane = - dot( vClipPosition, plane.xyz ) + plane.w;\\n\\t\\t\\t\\tdistanceGradient = fwidth( distanceToPlane ) / 2.0;\\n\\t\\t\\t\\tunionClipOpacity *= 1.0 - smoothstep( - distanceGradient, distanceGradient, distanceToPlane );\\n\\t\\t\\t}\\n\\t\\t\\t#pragma unroll_loop_end\\n\\t\\t\\tclipOpacity *= 1.0 - unionClipOpacity;\\n\\t\\t#endif\\n\\t\\tdiffuseColor.a *= clipOpacity;\\n\\t\\tif ( diffuseColor.a == 0.0 ) discard;\\n\\t#else\\n\\t\\t#pragma unroll_loop_start\\n\\t\\tfor ( int i = 0; i < UNION_CLIPPING_PLANES; i ++ ) {\\n\\t\\t\\tplane = clippingPlanes[ i ];\\n\\t\\t\\tif ( dot( vClipPosition, plane.xyz ) > plane.w ) discard;\\n\\t\\t}\\n\\t\\t#pragma unroll_loop_end\\n\\t\\t#if UNION_CLIPPING_PLANES < NUM_CLIPPING_PLANES\\n\\t\\t\\tbool clipped = true;\\n\\t\\t\\t#pragma unroll_loop_start\\n\\t\\t\\tfor ( int i = UNION_CLIPPING_PLANES; i < NUM_CLIPPING_PLANES; i ++ ) {\\n\\t\\t\\t\\tplane = clippingPlanes[ i ];\\n\\t\\t\\t\\tclipped = ( dot( vClipPosition, plane.xyz ) > plane.w ) && clipped;\\n\\t\\t\\t}\\n\\t\\t\\t#pragma unroll_loop_end\\n\\t\\t\\tif ( clipped ) discard;\\n\\t\\t#endif\\n\\t#endif\\n#endif\";\n\nvar clipping_planes_pars_fragment = \"#if NUM_CLIPPING_PLANES > 0\\n\\tvarying vec3 vClipPosition;\\n\\tuniform vec4 clippingPlanes[ NUM_CLIPPING_PLANES ];\\n#endif\";\n\nvar clipping_planes_pars_vertex = \"#if NUM_CLIPPING_PLANES > 0\\n\\tvarying vec3 vClipPosition;\\n#endif\";\n\nvar clipping_planes_vertex = \"#if NUM_CLIPPING_PLANES > 0\\n\\tvClipPosition = - mvPosition.xyz;\\n#endif\";\n\nvar color_fragment = \"#if defined( USE_COLOR_ALPHA )\\n\\tdiffuseColor *= vColor;\\n#elif defined( USE_COLOR )\\n\\tdiffuseColor.rgb *= vColor;\\n#endif\";\n\nvar color_pars_fragment = \"#if defined( USE_COLOR_ALPHA )\\n\\tvarying vec4 vColor;\\n#elif defined( USE_COLOR )\\n\\tvarying vec3 vColor;\\n#endif\";\n\nvar color_pars_vertex = \"#if defined( USE_COLOR_ALPHA )\\n\\tvarying vec4 vColor;\\n#elif defined( USE_COLOR ) || defined( USE_INSTANCING_COLOR ) || defined( USE_BATCHING_COLOR )\\n\\tvarying vec3 vColor;\\n#endif\";\n\nvar color_vertex = \"#if defined( USE_COLOR_ALPHA )\\n\\tvColor = vec4( 1.0 );\\n#elif defined( USE_COLOR ) || defined( USE_INSTANCING_COLOR ) || defined( USE_BATCHING_COLOR )\\n\\tvColor = vec3( 1.0 );\\n#endif\\n#ifdef USE_COLOR\\n\\tvColor *= color;\\n#endif\\n#ifdef USE_INSTANCING_COLOR\\n\\tvColor.xyz *= instanceColor.xyz;\\n#endif\\n#ifdef USE_BATCHING_COLOR\\n\\tvec3 batchingColor = getBatchingColor( batchId );\\n\\tvColor.xyz *= batchingColor.xyz;\\n#endif\";\n\nvar common = \"#define PI 3.141592653589793\\n#define PI2 6.283185307179586\\n#define PI_HALF 1.5707963267948966\\n#define RECIPROCAL_PI 0.3183098861837907\\n#define RECIPROCAL_PI2 0.15915494309189535\\n#define EPSILON 1e-6\\n#ifndef saturate\\n#define saturate( a ) clamp( a, 0.0, 1.0 )\\n#endif\\n#define whiteComplement( a ) ( 1.0 - saturate( a ) )\\nfloat pow2( const in float x ) { return x*x; }\\nvec3 pow2( const in vec3 x ) { return x*x; }\\nfloat pow3( const in float x ) { return x*x*x; }\\nfloat pow4( const in float x ) { float x2 = x*x; return x2*x2; }\\nfloat max3( const in vec3 v ) { return max( max( v.x, v.y ), v.z ); }\\nfloat average( const in vec3 v ) { return dot( v, vec3( 0.3333333 ) ); }\\nhighp float rand( const in vec2 uv ) {\\n\\tconst highp float a = 12.9898, b = 78.233, c = 43758.5453;\\n\\thighp float dt = dot( uv.xy, vec2( a,b ) ), sn = mod( dt, PI );\\n\\treturn fract( sin( sn ) * c );\\n}\\n#ifdef HIGH_PRECISION\\n\\tfloat precisionSafeLength( vec3 v ) { return length( v ); }\\n#else\\n\\tfloat precisionSafeLength( vec3 v ) {\\n\\t\\tfloat maxComponent = max3( abs( v ) );\\n\\t\\treturn length( v / maxComponent ) * maxComponent;\\n\\t}\\n#endif\\nstruct IncidentLight {\\n\\tvec3 color;\\n\\tvec3 direction;\\n\\tbool visible;\\n};\\nstruct ReflectedLight {\\n\\tvec3 directDiffuse;\\n\\tvec3 directSpecular;\\n\\tvec3 indirectDiffuse;\\n\\tvec3 indirectSpecular;\\n};\\n#ifdef USE_ALPHAHASH\\n\\tvarying vec3 vPosition;\\n#endif\\nvec3 transformDirection( in vec3 dir, in mat4 matrix ) {\\n\\treturn normalize( ( matrix * vec4( dir, 0.0 ) ).xyz );\\n}\\nvec3 inverseTransformDirection( in vec3 dir, in mat4 matrix ) {\\n\\treturn normalize( ( vec4( dir, 0.0 ) * matrix ).xyz );\\n}\\nmat3 transposeMat3( const in mat3 m ) {\\n\\tmat3 tmp;\\n\\ttmp[ 0 ] = vec3( m[ 0 ].x, m[ 1 ].x, m[ 2 ].x );\\n\\ttmp[ 1 ] = vec3( m[ 0 ].y, m[ 1 ].y, m[ 2 ].y );\\n\\ttmp[ 2 ] = vec3( m[ 0 ].z, m[ 1 ].z, m[ 2 ].z );\\n\\treturn tmp;\\n}\\nfloat luminance( const in vec3 rgb ) {\\n\\tconst vec3 weights = vec3( 0.2126729, 0.7151522, 0.0721750 );\\n\\treturn dot( weights, rgb );\\n}\\nbool isPerspectiveMatrix( mat4 m ) {\\n\\treturn m[ 2 ][ 3 ] == - 1.0;\\n}\\nvec2 equirectUv( in vec3 dir ) {\\n\\tfloat u = atan( dir.z, dir.x ) * RECIPROCAL_PI2 + 0.5;\\n\\tfloat v = asin( clamp( dir.y, - 1.0, 1.0 ) ) * RECIPROCAL_PI + 0.5;\\n\\treturn vec2( u, v );\\n}\\nvec3 BRDF_Lambert( const in vec3 diffuseColor ) {\\n\\treturn RECIPROCAL_PI * diffuseColor;\\n}\\nvec3 F_Schlick( const in vec3 f0, const in float f90, const in float dotVH ) {\\n\\tfloat fresnel = exp2( ( - 5.55473 * dotVH - 6.98316 ) * dotVH );\\n\\treturn f0 * ( 1.0 - fresnel ) + ( f90 * fresnel );\\n}\\nfloat F_Schlick( const in float f0, const in float f90, const in float dotVH ) {\\n\\tfloat fresnel = exp2( ( - 5.55473 * dotVH - 6.98316 ) * dotVH );\\n\\treturn f0 * ( 1.0 - fresnel ) + ( f90 * fresnel );\\n} // validated\";\n\nvar cube_uv_reflection_fragment = \"#ifdef ENVMAP_TYPE_CUBE_UV\\n\\t#define cubeUV_minMipLevel 4.0\\n\\t#define cubeUV_minTileSize 16.0\\n\\tfloat getFace( vec3 direction ) {\\n\\t\\tvec3 absDirection = abs( direction );\\n\\t\\tfloat face = - 1.0;\\n\\t\\tif ( absDirection.x > absDirection.z ) {\\n\\t\\t\\tif ( absDirection.x > absDirection.y )\\n\\t\\t\\t\\tface = direction.x > 0.0 ? 0.0 : 3.0;\\n\\t\\t\\telse\\n\\t\\t\\t\\tface = direction.y > 0.0 ? 1.0 : 4.0;\\n\\t\\t} else {\\n\\t\\t\\tif ( absDirection.z > absDirection.y )\\n\\t\\t\\t\\tface = direction.z > 0.0 ? 2.0 : 5.0;\\n\\t\\t\\telse\\n\\t\\t\\t\\tface = direction.y > 0.0 ? 1.0 : 4.0;\\n\\t\\t}\\n\\t\\treturn face;\\n\\t}\\n\\tvec2 getUV( vec3 direction, float face ) {\\n\\t\\tvec2 uv;\\n\\t\\tif ( face == 0.0 ) {\\n\\t\\t\\tuv = vec2( direction.z, direction.y ) / abs( direction.x );\\n\\t\\t} else if ( face == 1.0 ) {\\n\\t\\t\\tuv = vec2( - direction.x, - direction.z ) / abs( direction.y );\\n\\t\\t} else if ( face == 2.0 ) {\\n\\t\\t\\tuv = vec2( - direction.x, direction.y ) / abs( direction.z );\\n\\t\\t} else if ( face == 3.0 ) {\\n\\t\\t\\tuv = vec2( - direction.z, direction.y ) / abs( direction.x );\\n\\t\\t} else if ( face == 4.0 ) {\\n\\t\\t\\tuv = vec2( - direction.x, direction.z ) / abs( direction.y );\\n\\t\\t} else {\\n\\t\\t\\tuv = vec2( direction.x, direction.y ) / abs( direction.z );\\n\\t\\t}\\n\\t\\treturn 0.5 * ( uv + 1.0 );\\n\\t}\\n\\tvec3 bilinearCubeUV( sampler2D envMap, vec3 direction, float mipInt ) {\\n\\t\\tfloat face = getFace( direction );\\n\\t\\tfloat filterInt = max( cubeUV_minMipLevel - mipInt, 0.0 );\\n\\t\\tmipInt = max( mipInt, cubeUV_minMipLevel );\\n\\t\\tfloat faceSize = exp2( mipInt );\\n\\t\\thighp vec2 uv = getUV( direction, face ) * ( faceSize - 2.0 ) + 1.0;\\n\\t\\tif ( face > 2.0 ) {\\n\\t\\t\\tuv.y += faceSize;\\n\\t\\t\\tface -= 3.0;\\n\\t\\t}\\n\\t\\tuv.x += face * faceSize;\\n\\t\\tuv.x += filterInt * 3.0 * cubeUV_minTileSize;\\n\\t\\tuv.y += 4.0 * ( exp2( CUBEUV_MAX_MIP ) - faceSize );\\n\\t\\tuv.x *= CUBEUV_TEXEL_WIDTH;\\n\\t\\tuv.y *= CUBEUV_TEXEL_HEIGHT;\\n\\t\\t#ifdef texture2DGradEXT\\n\\t\\t\\treturn texture2DGradEXT( envMap, uv, vec2( 0.0 ), vec2( 0.0 ) ).rgb;\\n\\t\\t#else\\n\\t\\t\\treturn texture2D( envMap, uv ).rgb;\\n\\t\\t#endif\\n\\t}\\n\\t#define cubeUV_r0 1.0\\n\\t#define cubeUV_m0 - 2.0\\n\\t#define cubeUV_r1 0.8\\n\\t#define cubeUV_m1 - 1.0\\n\\t#define cubeUV_r4 0.4\\n\\t#define cubeUV_m4 2.0\\n\\t#define cubeUV_r5 0.305\\n\\t#define cubeUV_m5 3.0\\n\\t#define cubeUV_r6 0.21\\n\\t#define cubeUV_m6 4.0\\n\\tfloat roughnessToMip( float roughness ) {\\n\\t\\tfloat mip = 0.0;\\n\\t\\tif ( roughness >= cubeUV_r1 ) {\\n\\t\\t\\tmip = ( cubeUV_r0 - roughness ) * ( cubeUV_m1 - cubeUV_m0 ) / ( cubeUV_r0 - cubeUV_r1 ) + cubeUV_m0;\\n\\t\\t} else if ( roughness >= cubeUV_r4 ) {\\n\\t\\t\\tmip = ( cubeUV_r1 - roughness ) * ( cubeUV_m4 - cubeUV_m1 ) / ( cubeUV_r1 - cubeUV_r4 ) + cubeUV_m1;\\n\\t\\t} else if ( roughness >= cubeUV_r5 ) {\\n\\t\\t\\tmip = ( cubeUV_r4 - roughness ) * ( cubeUV_m5 - cubeUV_m4 ) / ( cubeUV_r4 - cubeUV_r5 ) + cubeUV_m4;\\n\\t\\t} else if ( roughness >= cubeUV_r6 ) {\\n\\t\\t\\tmip = ( cubeUV_r5 - roughness ) * ( cubeUV_m6 - cubeUV_m5 ) / ( cubeUV_r5 - cubeUV_r6 ) + cubeUV_m5;\\n\\t\\t} else {\\n\\t\\t\\tmip = - 2.0 * log2( 1.16 * roughness );\\t\\t}\\n\\t\\treturn mip;\\n\\t}\\n\\tvec4 textureCubeUV( sampler2D envMap, vec3 sampleDir, float roughness ) {\\n\\t\\tfloat mip = clamp( roughnessToMip( roughness ), cubeUV_m0, CUBEUV_MAX_MIP );\\n\\t\\tfloat mipF = fract( mip );\\n\\t\\tfloat mipInt = floor( mip );\\n\\t\\tvec3 color0 = bilinearCubeUV( envMap, sampleDir, mipInt );\\n\\t\\tif ( mipF == 0.0 ) {\\n\\t\\t\\treturn vec4( color0, 1.0 );\\n\\t\\t} else {\\n\\t\\t\\tvec3 color1 = bilinearCubeUV( envMap, sampleDir, mipInt + 1.0 );\\n\\t\\t\\treturn vec4( mix( color0, color1, mipF ), 1.0 );\\n\\t\\t}\\n\\t}\\n#endif\";\n\nvar defaultnormal_vertex = \"vec3 transformedNormal = objectNormal;\\n#ifdef USE_TANGENT\\n\\tvec3 transformedTangent = objectTangent;\\n#endif\\n#ifdef USE_BATCHING\\n\\tmat3 bm = mat3( batchingMatrix );\\n\\ttransformedNormal /= vec3( dot( bm[ 0 ], bm[ 0 ] ), dot( bm[ 1 ], bm[ 1 ] ), dot( bm[ 2 ], bm[ 2 ] ) );\\n\\ttransformedNormal = bm * transformedNormal;\\n\\t#ifdef USE_TANGENT\\n\\t\\ttransformedTangent = bm * transformedTangent;\\n\\t#endif\\n#endif\\n#ifdef USE_INSTANCING\\n\\tmat3 im = mat3( instanceMatrix );\\n\\ttransformedNormal /= vec3( dot( im[ 0 ], im[ 0 ] ), dot( im[ 1 ], im[ 1 ] ), dot( im[ 2 ], im[ 2 ] ) );\\n\\ttransformedNormal = im * transformedNormal;\\n\\t#ifdef USE_TANGENT\\n\\t\\ttransformedTangent = im * transformedTangent;\\n\\t#endif\\n#endif\\ntransformedNormal = normalMatrix * transformedNormal;\\n#ifdef FLIP_SIDED\\n\\ttransformedNormal = - transformedNormal;\\n#endif\\n#ifdef USE_TANGENT\\n\\ttransformedTangent = ( modelViewMatrix * vec4( transformedTangent, 0.0 ) ).xyz;\\n\\t#ifdef FLIP_SIDED\\n\\t\\ttransformedTangent = - transformedTangent;\\n\\t#endif\\n#endif\";\n\nvar displacementmap_pars_vertex = \"#ifdef USE_DISPLACEMENTMAP\\n\\tuniform sampler2D displacementMap;\\n\\tuniform float displacementScale;\\n\\tuniform float displacementBias;\\n#endif\";\n\nvar displacementmap_vertex = \"#ifdef USE_DISPLACEMENTMAP\\n\\ttransformed += normalize( objectNormal ) * ( texture2D( displacementMap, vDisplacementMapUv ).x * displacementScale + displacementBias );\\n#endif\";\n\nvar emissivemap_fragment = \"#ifdef USE_EMISSIVEMAP\\n\\tvec4 emissiveColor = texture2D( emissiveMap, vEmissiveMapUv );\\n\\ttotalEmissiveRadiance *= emissiveColor.rgb;\\n#endif\";\n\nvar emissivemap_pars_fragment = \"#ifdef USE_EMISSIVEMAP\\n\\tuniform sampler2D emissiveMap;\\n#endif\";\n\nvar colorspace_fragment = \"gl_FragColor = linearToOutputTexel( gl_FragColor );\";\n\nvar colorspace_pars_fragment = \"\\nconst mat3 LINEAR_SRGB_TO_LINEAR_DISPLAY_P3 = mat3(\\n\\tvec3( 0.8224621, 0.177538, 0.0 ),\\n\\tvec3( 0.0331941, 0.9668058, 0.0 ),\\n\\tvec3( 0.0170827, 0.0723974, 0.9105199 )\\n);\\nconst mat3 LINEAR_DISPLAY_P3_TO_LINEAR_SRGB = mat3(\\n\\tvec3( 1.2249401, - 0.2249404, 0.0 ),\\n\\tvec3( - 0.0420569, 1.0420571, 0.0 ),\\n\\tvec3( - 0.0196376, - 0.0786361, 1.0982735 )\\n);\\nvec4 LinearSRGBToLinearDisplayP3( in vec4 value ) {\\n\\treturn vec4( value.rgb * LINEAR_SRGB_TO_LINEAR_DISPLAY_P3, value.a );\\n}\\nvec4 LinearDisplayP3ToLinearSRGB( in vec4 value ) {\\n\\treturn vec4( value.rgb * LINEAR_DISPLAY_P3_TO_LINEAR_SRGB, value.a );\\n}\\nvec4 LinearTransferOETF( in vec4 value ) {\\n\\treturn value;\\n}\\nvec4 sRGBTransferOETF( in vec4 value ) {\\n\\treturn vec4( mix( pow( value.rgb, vec3( 0.41666 ) ) * 1.055 - vec3( 0.055 ), value.rgb * 12.92, vec3( lessThanEqual( value.rgb, vec3( 0.0031308 ) ) ) ), value.a );\\n}\\nvec4 LinearToLinear( in vec4 value ) {\\n\\treturn value;\\n}\\nvec4 LinearTosRGB( in vec4 value ) {\\n\\treturn sRGBTransferOETF( value );\\n}\";\n\nvar envmap_fragment = \"#ifdef USE_ENVMAP\\n\\t#ifdef ENV_WORLDPOS\\n\\t\\tvec3 cameraToFrag;\\n\\t\\tif ( isOrthographic ) {\\n\\t\\t\\tcameraToFrag = normalize( vec3( - viewMatrix[ 0 ][ 2 ], - viewMatrix[ 1 ][ 2 ], - viewMatrix[ 2 ][ 2 ] ) );\\n\\t\\t} else {\\n\\t\\t\\tcameraToFrag = normalize( vWorldPosition - cameraPosition );\\n\\t\\t}\\n\\t\\tvec3 worldNormal = inverseTransformDirection( normal, viewMatrix );\\n\\t\\t#ifdef ENVMAP_MODE_REFLECTION\\n\\t\\t\\tvec3 reflectVec = reflect( cameraToFrag, worldNormal );\\n\\t\\t#else\\n\\t\\t\\tvec3 reflectVec = refract( cameraToFrag, worldNormal, refractionRatio );\\n\\t\\t#endif\\n\\t#else\\n\\t\\tvec3 reflectVec = vReflect;\\n\\t#endif\\n\\t#ifdef ENVMAP_TYPE_CUBE\\n\\t\\tvec4 envColor = textureCube( envMap, envMapRotation * vec3( flipEnvMap * reflectVec.x, reflectVec.yz ) );\\n\\t#else\\n\\t\\tvec4 envColor = vec4( 0.0 );\\n\\t#endif\\n\\t#ifdef ENVMAP_BLENDING_MULTIPLY\\n\\t\\toutgoingLight = mix( outgoingLight, outgoingLight * envColor.xyz, specularStrength * reflectivity );\\n\\t#elif defined( ENVMAP_BLENDING_MIX )\\n\\t\\toutgoingLight = mix( outgoingLight, envColor.xyz, specularStrength * reflectivity );\\n\\t#elif defined( ENVMAP_BLENDING_ADD )\\n\\t\\toutgoingLight += envColor.xyz * specularStrength * reflectivity;\\n\\t#endif\\n#endif\";\n\nvar envmap_common_pars_fragment = \"#ifdef USE_ENVMAP\\n\\tuniform float envMapIntensity;\\n\\tuniform float flipEnvMap;\\n\\tuniform mat3 envMapRotation;\\n\\t#ifdef ENVMAP_TYPE_CUBE\\n\\t\\tuniform samplerCube envMap;\\n\\t#else\\n\\t\\tuniform sampler2D envMap;\\n\\t#endif\\n\\t\\n#endif\";\n\nvar envmap_pars_fragment = \"#ifdef USE_ENVMAP\\n\\tuniform float reflectivity;\\n\\t#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG ) || defined( LAMBERT )\\n\\t\\t#define ENV_WORLDPOS\\n\\t#endif\\n\\t#ifdef ENV_WORLDPOS\\n\\t\\tvarying vec3 vWorldPosition;\\n\\t\\tuniform float refractionRatio;\\n\\t#else\\n\\t\\tvarying vec3 vReflect;\\n\\t#endif\\n#endif\";\n\nvar envmap_pars_vertex = \"#ifdef USE_ENVMAP\\n\\t#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG ) || defined( LAMBERT )\\n\\t\\t#define ENV_WORLDPOS\\n\\t#endif\\n\\t#ifdef ENV_WORLDPOS\\n\\t\\t\\n\\t\\tvarying vec3 vWorldPosition;\\n\\t#else\\n\\t\\tvarying vec3 vReflect;\\n\\t\\tuniform float refractionRatio;\\n\\t#endif\\n#endif\";\n\nvar envmap_vertex = \"#ifdef USE_ENVMAP\\n\\t#ifdef ENV_WORLDPOS\\n\\t\\tvWorldPosition = worldPosition.xyz;\\n\\t#else\\n\\t\\tvec3 cameraToVertex;\\n\\t\\tif ( isOrthographic ) {\\n\\t\\t\\tcameraToVertex = normalize( vec3( - viewMatrix[ 0 ][ 2 ], - viewMatrix[ 1 ][ 2 ], - viewMatrix[ 2 ][ 2 ] ) );\\n\\t\\t} else {\\n\\t\\t\\tcameraToVertex = normalize( worldPosition.xyz - cameraPosition );\\n\\t\\t}\\n\\t\\tvec3 worldNormal = inverseTransformDirection( transformedNormal, viewMatrix );\\n\\t\\t#ifdef ENVMAP_MODE_REFLECTION\\n\\t\\t\\tvReflect = reflect( cameraToVertex, worldNormal );\\n\\t\\t#else\\n\\t\\t\\tvReflect = refract( cameraToVertex, worldNormal, refractionRatio );\\n\\t\\t#endif\\n\\t#endif\\n#endif\";\n\nvar fog_vertex = \"#ifdef USE_FOG\\n\\tvFogDepth = - mvPosition.z;\\n#endif\";\n\nvar fog_pars_vertex = \"#ifdef USE_FOG\\n\\tvarying float vFogDepth;\\n#endif\";\n\nvar fog_fragment = \"#ifdef USE_FOG\\n\\t#ifdef FOG_EXP2\\n\\t\\tfloat fogFactor = 1.0 - exp( - fogDensity * fogDensity * vFogDepth * vFogDepth );\\n\\t#else\\n\\t\\tfloat fogFactor = smoothstep( fogNear, fogFar, vFogDepth );\\n\\t#endif\\n\\tgl_FragColor.rgb = mix( gl_FragColor.rgb, fogColor, fogFactor );\\n#endif\";\n\nvar fog_pars_fragment = \"#ifdef USE_FOG\\n\\tuniform vec3 fogColor;\\n\\tvarying float vFogDepth;\\n\\t#ifdef FOG_EXP2\\n\\t\\tuniform float fogDensity;\\n\\t#else\\n\\t\\tuniform float fogNear;\\n\\t\\tuniform float fogFar;\\n\\t#endif\\n#endif\";\n\nvar gradientmap_pars_fragment = \"#ifdef USE_GRADIENTMAP\\n\\tuniform sampler2D gradientMap;\\n#endif\\nvec3 getGradientIrradiance( vec3 normal, vec3 lightDirection ) {\\n\\tfloat dotNL = dot( normal, lightDirection );\\n\\tvec2 coord = vec2( dotNL * 0.5 + 0.5, 0.0 );\\n\\t#ifdef USE_GRADIENTMAP\\n\\t\\treturn vec3( texture2D( gradientMap, coord ).r );\\n\\t#else\\n\\t\\tvec2 fw = fwidth( coord ) * 0.5;\\n\\t\\treturn mix( vec3( 0.7 ), vec3( 1.0 ), smoothstep( 0.7 - fw.x, 0.7 + fw.x, coord.x ) );\\n\\t#endif\\n}\";\n\nvar lightmap_pars_fragment = \"#ifdef USE_LIGHTMAP\\n\\tuniform sampler2D lightMap;\\n\\tuniform float lightMapIntensity;\\n#endif\";\n\nvar lights_lambert_fragment = \"LambertMaterial material;\\nmaterial.diffuseColor = diffuseColor.rgb;\\nmaterial.specularStrength = specularStrength;\";\n\nvar lights_lambert_pars_fragment = \"varying vec3 vViewPosition;\\nstruct LambertMaterial {\\n\\tvec3 diffuseColor;\\n\\tfloat specularStrength;\\n};\\nvoid RE_Direct_Lambert( const in IncidentLight directLight, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in LambertMaterial material, inout ReflectedLight reflectedLight ) {\\n\\tfloat dotNL = saturate( dot( geometryNormal, directLight.direction ) );\\n\\tvec3 irradiance = dotNL * directLight.color;\\n\\treflectedLight.directDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\\n}\\nvoid RE_IndirectDiffuse_Lambert( const in vec3 irradiance, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in LambertMaterial material, inout ReflectedLight reflectedLight ) {\\n\\treflectedLight.indirectDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\\n}\\n#define RE_Direct\\t\\t\\t\\tRE_Direct_Lambert\\n#define RE_IndirectDiffuse\\t\\tRE_IndirectDiffuse_Lambert\";\n\nvar lights_pars_begin = \"uniform bool receiveShadow;\\nuniform vec3 ambientLightColor;\\n#if defined( USE_LIGHT_PROBES )\\n\\tuniform vec3 lightProbe[ 9 ];\\n#endif\\nvec3 shGetIrradianceAt( in vec3 normal, in vec3 shCoefficients[ 9 ] ) {\\n\\tfloat x = normal.x, y = normal.y, z = normal.z;\\n\\tvec3 result = shCoefficients[ 0 ] * 0.886227;\\n\\tresult += shCoefficients[ 1 ] * 2.0 * 0.511664 * y;\\n\\tresult += shCoefficients[ 2 ] * 2.0 * 0.511664 * z;\\n\\tresult += shCoefficients[ 3 ] * 2.0 * 0.511664 * x;\\n\\tresult += shCoefficients[ 4 ] * 2.0 * 0.429043 * x * y;\\n\\tresult += shCoefficients[ 5 ] * 2.0 * 0.429043 * y * z;\\n\\tresult += shCoefficients[ 6 ] * ( 0.743125 * z * z - 0.247708 );\\n\\tresult += shCoefficients[ 7 ] * 2.0 * 0.429043 * x * z;\\n\\tresult += shCoefficients[ 8 ] * 0.429043 * ( x * x - y * y );\\n\\treturn result;\\n}\\nvec3 getLightProbeIrradiance( const in vec3 lightProbe[ 9 ], const in vec3 normal ) {\\n\\tvec3 worldNormal = inverseTransformDirection( normal, viewMatrix );\\n\\tvec3 irradiance = shGetIrradianceAt( worldNormal, lightProbe );\\n\\treturn irradiance;\\n}\\nvec3 getAmbientLightIrradiance( const in vec3 ambientLightColor ) {\\n\\tvec3 irradiance = ambientLightColor;\\n\\treturn irradiance;\\n}\\nfloat getDistanceAttenuation( const in float lightDistance, const in float cutoffDistance, const in float decayExponent ) {\\n\\tfloat distanceFalloff = 1.0 / max( pow( lightDistance, decayExponent ), 0.01 );\\n\\tif ( cutoffDistance > 0.0 ) {\\n\\t\\tdistanceFalloff *= pow2( saturate( 1.0 - pow4( lightDistance / cutoffDistance ) ) );\\n\\t}\\n\\treturn distanceFalloff;\\n}\\nfloat getSpotAttenuation( const in float coneCosine, const in float penumbraCosine, const in float angleCosine ) {\\n\\treturn smoothstep( coneCosine, penumbraCosine, angleCosine );\\n}\\n#if NUM_DIR_LIGHTS > 0\\n\\tstruct DirectionalLight {\\n\\t\\tvec3 direction;\\n\\t\\tvec3 color;\\n\\t};\\n\\tuniform DirectionalLight directionalLights[ NUM_DIR_LIGHTS ];\\n\\tvoid getDirectionalLightInfo( const in DirectionalLight directionalLight, out IncidentLight light ) {\\n\\t\\tlight.color = directionalLight.color;\\n\\t\\tlight.direction = directionalLight.direction;\\n\\t\\tlight.visible = true;\\n\\t}\\n#endif\\n#if NUM_POINT_LIGHTS > 0\\n\\tstruct PointLight {\\n\\t\\tvec3 position;\\n\\t\\tvec3 color;\\n\\t\\tfloat distance;\\n\\t\\tfloat decay;\\n\\t};\\n\\tuniform PointLight pointLights[ NUM_POINT_LIGHTS ];\\n\\tvoid getPointLightInfo( const in PointLight pointLight, const in vec3 geometryPosition, out IncidentLight light ) {\\n\\t\\tvec3 lVector = pointLight.position - geometryPosition;\\n\\t\\tlight.direction = normalize( lVector );\\n\\t\\tfloat lightDistance = length( lVector );\\n\\t\\tlight.color = pointLight.color;\\n\\t\\tlight.color *= getDistanceAttenuation( lightDistance, pointLight.distance, pointLight.decay );\\n\\t\\tlight.visible = ( light.color != vec3( 0.0 ) );\\n\\t}\\n#endif\\n#if NUM_SPOT_LIGHTS > 0\\n\\tstruct SpotLight {\\n\\t\\tvec3 position;\\n\\t\\tvec3 direction;\\n\\t\\tvec3 color;\\n\\t\\tfloat distance;\\n\\t\\tfloat decay;\\n\\t\\tfloat coneCos;\\n\\t\\tfloat penumbraCos;\\n\\t};\\n\\tuniform SpotLight spotLights[ NUM_SPOT_LIGHTS ];\\n\\tvoid getSpotLightInfo( const in SpotLight spotLight, const in vec3 geometryPosition, out IncidentLight light ) {\\n\\t\\tvec3 lVector = spotLight.position - geometryPosition;\\n\\t\\tlight.direction = normalize( lVector );\\n\\t\\tfloat angleCos = dot( light.direction, spotLight.direction );\\n\\t\\tfloat spotAttenuation = getSpotAttenuation( spotLight.coneCos, spotLight.penumbraCos, angleCos );\\n\\t\\tif ( spotAttenuation > 0.0 ) {\\n\\t\\t\\tfloat lightDistance = length( lVector );\\n\\t\\t\\tlight.color = spotLight.color * spotAttenuation;\\n\\t\\t\\tlight.color *= getDistanceAttenuation( lightDistance, spotLight.distance, spotLight.decay );\\n\\t\\t\\tlight.visible = ( light.color != vec3( 0.0 ) );\\n\\t\\t} else {\\n\\t\\t\\tlight.color = vec3( 0.0 );\\n\\t\\t\\tlight.visible = false;\\n\\t\\t}\\n\\t}\\n#endif\\n#if NUM_RECT_AREA_LIGHTS > 0\\n\\tstruct RectAreaLight {\\n\\t\\tvec3 color;\\n\\t\\tvec3 position;\\n\\t\\tvec3 halfWidth;\\n\\t\\tvec3 halfHeight;\\n\\t};\\n\\tuniform sampler2D ltc_1;\\tuniform sampler2D ltc_2;\\n\\tuniform RectAreaLight rectAreaLights[ NUM_RECT_AREA_LIGHTS ];\\n#endif\\n#if NUM_HEMI_LIGHTS > 0\\n\\tstruct HemisphereLight {\\n\\t\\tvec3 direction;\\n\\t\\tvec3 skyColor;\\n\\t\\tvec3 groundColor;\\n\\t};\\n\\tuniform HemisphereLight hemisphereLights[ NUM_HEMI_LIGHTS ];\\n\\tvec3 getHemisphereLightIrradiance( const in HemisphereLight hemiLight, const in vec3 normal ) {\\n\\t\\tfloat dotNL = dot( normal, hemiLight.direction );\\n\\t\\tfloat hemiDiffuseWeight = 0.5 * dotNL + 0.5;\\n\\t\\tvec3 irradiance = mix( hemiLight.groundColor, hemiLight.skyColor, hemiDiffuseWeight );\\n\\t\\treturn irradiance;\\n\\t}\\n#endif\";\n\nvar envmap_physical_pars_fragment = \"#ifdef USE_ENVMAP\\n\\tvec3 getIBLIrradiance( const in vec3 normal ) {\\n\\t\\t#ifdef ENVMAP_TYPE_CUBE_UV\\n\\t\\t\\tvec3 worldNormal = inverseTransformDirection( normal, viewMatrix );\\n\\t\\t\\tvec4 envMapColor = textureCubeUV( envMap, envMapRotation * worldNormal, 1.0 );\\n\\t\\t\\treturn PI * envMapColor.rgb * envMapIntensity;\\n\\t\\t#else\\n\\t\\t\\treturn vec3( 0.0 );\\n\\t\\t#endif\\n\\t}\\n\\tvec3 getIBLRadiance( const in vec3 viewDir, const in vec3 normal, const in float roughness ) {\\n\\t\\t#ifdef ENVMAP_TYPE_CUBE_UV\\n\\t\\t\\tvec3 reflectVec = reflect( - viewDir, normal );\\n\\t\\t\\treflectVec = normalize( mix( reflectVec, normal, roughness * roughness) );\\n\\t\\t\\treflectVec = inverseTransformDirection( reflectVec, viewMatrix );\\n\\t\\t\\tvec4 envMapColor = textureCubeUV( envMap, envMapRotation * reflectVec, roughness );\\n\\t\\t\\treturn envMapColor.rgb * envMapIntensity;\\n\\t\\t#else\\n\\t\\t\\treturn vec3( 0.0 );\\n\\t\\t#endif\\n\\t}\\n\\t#ifdef USE_ANISOTROPY\\n\\t\\tvec3 getIBLAnisotropyRadiance( const in vec3 viewDir, const in vec3 normal, const in float roughness, const in vec3 bitangent, const in float anisotropy ) {\\n\\t\\t\\t#ifdef ENVMAP_TYPE_CUBE_UV\\n\\t\\t\\t\\tvec3 bentNormal = cross( bitangent, viewDir );\\n\\t\\t\\t\\tbentNormal = normalize( cross( bentNormal, bitangent ) );\\n\\t\\t\\t\\tbentNormal = normalize( mix( bentNormal, normal, pow2( pow2( 1.0 - anisotropy * ( 1.0 - roughness ) ) ) ) );\\n\\t\\t\\t\\treturn getIBLRadiance( viewDir, bentNormal, roughness );\\n\\t\\t\\t#else\\n\\t\\t\\t\\treturn vec3( 0.0 );\\n\\t\\t\\t#endif\\n\\t\\t}\\n\\t#endif\\n#endif\";\n\nvar lights_toon_fragment = \"ToonMaterial material;\\nmaterial.diffuseColor = diffuseColor.rgb;\";\n\nvar lights_toon_pars_fragment = \"varying vec3 vViewPosition;\\nstruct ToonMaterial {\\n\\tvec3 diffuseColor;\\n};\\nvoid RE_Direct_Toon( const in IncidentLight directLight, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in ToonMaterial material, inout ReflectedLight reflectedLight ) {\\n\\tvec3 irradiance = getGradientIrradiance( geometryNormal, directLight.direction ) * directLight.color;\\n\\treflectedLight.directDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\\n}\\nvoid RE_IndirectDiffuse_Toon( const in vec3 irradiance, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in ToonMaterial material, inout ReflectedLight reflectedLight ) {\\n\\treflectedLight.indirectDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\\n}\\n#define RE_Direct\\t\\t\\t\\tRE_Direct_Toon\\n#define RE_IndirectDiffuse\\t\\tRE_IndirectDiffuse_Toon\";\n\nvar lights_phong_fragment = \"BlinnPhongMaterial material;\\nmaterial.diffuseColor = diffuseColor.rgb;\\nmaterial.specularColor = specular;\\nmaterial.specularShininess = shininess;\\nmaterial.specularStrength = specularStrength;\";\n\nvar lights_phong_pars_fragment = \"varying vec3 vViewPosition;\\nstruct BlinnPhongMaterial {\\n\\tvec3 diffuseColor;\\n\\tvec3 specularColor;\\n\\tfloat specularShininess;\\n\\tfloat specularStrength;\\n};\\nvoid RE_Direct_BlinnPhong( const in IncidentLight directLight, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in BlinnPhongMaterial material, inout ReflectedLight reflectedLight ) {\\n\\tfloat dotNL = saturate( dot( geometryNormal, directLight.direction ) );\\n\\tvec3 irradiance = dotNL * directLight.color;\\n\\treflectedLight.directDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\\n\\treflectedLight.directSpecular += irradiance * BRDF_BlinnPhong( directLight.direction, geometryViewDir, geometryNormal, material.specularColor, material.specularShininess ) * material.specularStrength;\\n}\\nvoid RE_IndirectDiffuse_BlinnPhong( const in vec3 irradiance, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in BlinnPhongMaterial material, inout ReflectedLight reflectedLight ) {\\n\\treflectedLight.indirectDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\\n}\\n#define RE_Direct\\t\\t\\t\\tRE_Direct_BlinnPhong\\n#define RE_IndirectDiffuse\\t\\tRE_IndirectDiffuse_BlinnPhong\";\n\nvar lights_physical_fragment = \"PhysicalMaterial material;\\nmaterial.diffuseColor = diffuseColor.rgb * ( 1.0 - metalnessFactor );\\nvec3 dxy = max( abs( dFdx( nonPerturbedNormal ) ), abs( dFdy( nonPerturbedNormal ) ) );\\nfloat geometryRoughness = max( max( dxy.x, dxy.y ), dxy.z );\\nmaterial.roughness = max( roughnessFactor, 0.0525 );material.roughness += geometryRoughness;\\nmaterial.roughness = min( material.roughness, 1.0 );\\n#ifdef IOR\\n\\tmaterial.ior = ior;\\n\\t#ifdef USE_SPECULAR\\n\\t\\tfloat specularIntensityFactor = specularIntensity;\\n\\t\\tvec3 specularColorFactor = specularColor;\\n\\t\\t#ifdef USE_SPECULAR_COLORMAP\\n\\t\\t\\tspecularColorFactor *= texture2D( specularColorMap, vSpecularColorMapUv ).rgb;\\n\\t\\t#endif\\n\\t\\t#ifdef USE_SPECULAR_INTENSITYMAP\\n\\t\\t\\tspecularIntensityFactor *= texture2D( specularIntensityMap, vSpecularIntensityMapUv ).a;\\n\\t\\t#endif\\n\\t\\tmaterial.specularF90 = mix( specularIntensityFactor, 1.0, metalnessFactor );\\n\\t#else\\n\\t\\tfloat specularIntensityFactor = 1.0;\\n\\t\\tvec3 specularColorFactor = vec3( 1.0 );\\n\\t\\tmaterial.specularF90 = 1.0;\\n\\t#endif\\n\\tmaterial.specularColor = mix( min( pow2( ( material.ior - 1.0 ) / ( material.ior + 1.0 ) ) * specularColorFactor, vec3( 1.0 ) ) * specularIntensityFactor, diffuseColor.rgb, metalnessFactor );\\n#else\\n\\tmaterial.specularColor = mix( vec3( 0.04 ), diffuseColor.rgb, metalnessFactor );\\n\\tmaterial.specularF90 = 1.0;\\n#endif\\n#ifdef USE_CLEARCOAT\\n\\tmaterial.clearcoat = clearcoat;\\n\\tmaterial.clearcoatRoughness = clearcoatRoughness;\\n\\tmaterial.clearcoatF0 = vec3( 0.04 );\\n\\tmaterial.clearcoatF90 = 1.0;\\n\\t#ifdef USE_CLEARCOATMAP\\n\\t\\tmaterial.clearcoat *= texture2D( clearcoatMap, vClearcoatMapUv ).x;\\n\\t#endif\\n\\t#ifdef USE_CLEARCOAT_ROUGHNESSMAP\\n\\t\\tmaterial.clearcoatRoughness *= texture2D( clearcoatRoughnessMap, vClearcoatRoughnessMapUv ).y;\\n\\t#endif\\n\\tmaterial.clearcoat = saturate( material.clearcoat );\\tmaterial.clearcoatRoughness = max( material.clearcoatRoughness, 0.0525 );\\n\\tmaterial.clearcoatRoughness += geometryRoughness;\\n\\tmaterial.clearcoatRoughness = min( material.clearcoatRoughness, 1.0 );\\n#endif\\n#ifdef USE_DISPERSION\\n\\tmaterial.dispersion = dispersion;\\n#endif\\n#ifdef USE_IRIDESCENCE\\n\\tmaterial.iridescence = iridescence;\\n\\tmaterial.iridescenceIOR = iridescenceIOR;\\n\\t#ifdef USE_IRIDESCENCEMAP\\n\\t\\tmaterial.iridescence *= texture2D( iridescenceMap, vIridescenceMapUv ).r;\\n\\t#endif\\n\\t#ifdef USE_IRIDESCENCE_THICKNESSMAP\\n\\t\\tmaterial.iridescenceThickness = (iridescenceThicknessMaximum - iridescenceThicknessMinimum) * texture2D( iridescenceThicknessMap, vIridescenceThicknessMapUv ).g + iridescenceThicknessMinimum;\\n\\t#else\\n\\t\\tmaterial.iridescenceThickness = iridescenceThicknessMaximum;\\n\\t#endif\\n#endif\\n#ifdef USE_SHEEN\\n\\tmaterial.sheenColor = sheenColor;\\n\\t#ifdef USE_SHEEN_COLORMAP\\n\\t\\tmaterial.sheenColor *= texture2D( sheenColorMap, vSheenColorMapUv ).rgb;\\n\\t#endif\\n\\tmaterial.sheenRoughness = clamp( sheenRoughness, 0.07, 1.0 );\\n\\t#ifdef USE_SHEEN_ROUGHNESSMAP\\n\\t\\tmaterial.sheenRoughness *= texture2D( sheenRoughnessMap, vSheenRoughnessMapUv ).a;\\n\\t#endif\\n#endif\\n#ifdef USE_ANISOTROPY\\n\\t#ifdef USE_ANISOTROPYMAP\\n\\t\\tmat2 anisotropyMat = mat2( anisotropyVector.x, anisotropyVector.y, - anisotropyVector.y, anisotropyVector.x );\\n\\t\\tvec3 anisotropyPolar = texture2D( anisotropyMap, vAnisotropyMapUv ).rgb;\\n\\t\\tvec2 anisotropyV = anisotropyMat * normalize( 2.0 * anisotropyPolar.rg - vec2( 1.0 ) ) * anisotropyPolar.b;\\n\\t#else\\n\\t\\tvec2 anisotropyV = anisotropyVector;\\n\\t#endif\\n\\tmaterial.anisotropy = length( anisotropyV );\\n\\tif( material.anisotropy == 0.0 ) {\\n\\t\\tanisotropyV = vec2( 1.0, 0.0 );\\n\\t} else {\\n\\t\\tanisotropyV /= material.anisotropy;\\n\\t\\tmaterial.anisotropy = saturate( material.anisotropy );\\n\\t}\\n\\tmaterial.alphaT = mix( pow2( material.roughness ), 1.0, pow2( material.anisotropy ) );\\n\\tmaterial.anisotropyT = tbn[ 0 ] * anisotropyV.x + tbn[ 1 ] * anisotropyV.y;\\n\\tmaterial.anisotropyB = tbn[ 1 ] * anisotropyV.x - tbn[ 0 ] * anisotropyV.y;\\n#endif\";\n\nvar lights_physical_pars_fragment = \"struct PhysicalMaterial {\\n\\tvec3 diffuseColor;\\n\\tfloat roughness;\\n\\tvec3 specularColor;\\n\\tfloat specularF90;\\n\\tfloat dispersion;\\n\\t#ifdef USE_CLEARCOAT\\n\\t\\tfloat clearcoat;\\n\\t\\tfloat clearcoatRoughness;\\n\\t\\tvec3 clearcoatF0;\\n\\t\\tfloat clearcoatF90;\\n\\t#endif\\n\\t#ifdef USE_IRIDESCENCE\\n\\t\\tfloat iridescence;\\n\\t\\tfloat iridescenceIOR;\\n\\t\\tfloat iridescenceThickness;\\n\\t\\tvec3 iridescenceFresnel;\\n\\t\\tvec3 iridescenceF0;\\n\\t#endif\\n\\t#ifdef USE_SHEEN\\n\\t\\tvec3 sheenColor;\\n\\t\\tfloat sheenRoughness;\\n\\t#endif\\n\\t#ifdef IOR\\n\\t\\tfloat ior;\\n\\t#endif\\n\\t#ifdef USE_TRANSMISSION\\n\\t\\tfloat transmission;\\n\\t\\tfloat transmissionAlpha;\\n\\t\\tfloat thickness;\\n\\t\\tfloat attenuationDistance;\\n\\t\\tvec3 attenuationColor;\\n\\t#endif\\n\\t#ifdef USE_ANISOTROPY\\n\\t\\tfloat anisotropy;\\n\\t\\tfloat alphaT;\\n\\t\\tvec3 anisotropyT;\\n\\t\\tvec3 anisotropyB;\\n\\t#endif\\n};\\nvec3 clearcoatSpecularDirect = vec3( 0.0 );\\nvec3 clearcoatSpecularIndirect = vec3( 0.0 );\\nvec3 sheenSpecularDirect = vec3( 0.0 );\\nvec3 sheenSpecularIndirect = vec3(0.0 );\\nvec3 Schlick_to_F0( const in vec3 f, const in float f90, const in float dotVH ) {\\n float x = clamp( 1.0 - dotVH, 0.0, 1.0 );\\n float x2 = x * x;\\n float x5 = clamp( x * x2 * x2, 0.0, 0.9999 );\\n return ( f - vec3( f90 ) * x5 ) / ( 1.0 - x5 );\\n}\\nfloat V_GGX_SmithCorrelated( const in float alpha, const in float dotNL, const in float dotNV ) {\\n\\tfloat a2 = pow2( alpha );\\n\\tfloat gv = dotNL * sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNV ) );\\n\\tfloat gl = dotNV * sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNL ) );\\n\\treturn 0.5 / max( gv + gl, EPSILON );\\n}\\nfloat D_GGX( const in float alpha, const in float dotNH ) {\\n\\tfloat a2 = pow2( alpha );\\n\\tfloat denom = pow2( dotNH ) * ( a2 - 1.0 ) + 1.0;\\n\\treturn RECIPROCAL_PI * a2 / pow2( denom );\\n}\\n#ifdef USE_ANISOTROPY\\n\\tfloat V_GGX_SmithCorrelated_Anisotropic( const in float alphaT, const in float alphaB, const in float dotTV, const in float dotBV, const in float dotTL, const in float dotBL, const in float dotNV, const in float dotNL ) {\\n\\t\\tfloat gv = dotNL * length( vec3( alphaT * dotTV, alphaB * dotBV, dotNV ) );\\n\\t\\tfloat gl = dotNV * length( vec3( alphaT * dotTL, alphaB * dotBL, dotNL ) );\\n\\t\\tfloat v = 0.5 / ( gv + gl );\\n\\t\\treturn saturate(v);\\n\\t}\\n\\tfloat D_GGX_Anisotropic( const in float alphaT, const in float alphaB, const in float dotNH, const in float dotTH, const in float dotBH ) {\\n\\t\\tfloat a2 = alphaT * alphaB;\\n\\t\\thighp vec3 v = vec3( alphaB * dotTH, alphaT * dotBH, a2 * dotNH );\\n\\t\\thighp float v2 = dot( v, v );\\n\\t\\tfloat w2 = a2 / v2;\\n\\t\\treturn RECIPROCAL_PI * a2 * pow2 ( w2 );\\n\\t}\\n#endif\\n#ifdef USE_CLEARCOAT\\n\\tvec3 BRDF_GGX_Clearcoat( const in vec3 lightDir, const in vec3 viewDir, const in vec3 normal, const in PhysicalMaterial material) {\\n\\t\\tvec3 f0 = material.clearcoatF0;\\n\\t\\tfloat f90 = material.clearcoatF90;\\n\\t\\tfloat roughness = material.clearcoatRoughness;\\n\\t\\tfloat alpha = pow2( roughness );\\n\\t\\tvec3 halfDir = normalize( lightDir + viewDir );\\n\\t\\tfloat dotNL = saturate( dot( normal, lightDir ) );\\n\\t\\tfloat dotNV = saturate( dot( normal, viewDir ) );\\n\\t\\tfloat dotNH = saturate( dot( normal, halfDir ) );\\n\\t\\tfloat dotVH = saturate( dot( viewDir, halfDir ) );\\n\\t\\tvec3 F = F_Schlick( f0, f90, dotVH );\\n\\t\\tfloat V = V_GGX_SmithCorrelated( alpha, dotNL, dotNV );\\n\\t\\tfloat D = D_GGX( alpha, dotNH );\\n\\t\\treturn F * ( V * D );\\n\\t}\\n#endif\\nvec3 BRDF_GGX( const in vec3 lightDir, const in vec3 viewDir, const in vec3 normal, const in PhysicalMaterial material ) {\\n\\tvec3 f0 = material.specularColor;\\n\\tfloat f90 = material.specularF90;\\n\\tfloat roughness = material.roughness;\\n\\tfloat alpha = pow2( roughness );\\n\\tvec3 halfDir = normalize( lightDir + viewDir );\\n\\tfloat dotNL = saturate( dot( normal, lightDir ) );\\n\\tfloat dotNV = saturate( dot( normal, viewDir ) );\\n\\tfloat dotNH = saturate( dot( normal, halfDir ) );\\n\\tfloat dotVH = saturate( dot( viewDir, halfDir ) );\\n\\tvec3 F = F_Schlick( f0, f90, dotVH );\\n\\t#ifdef USE_IRIDESCENCE\\n\\t\\tF = mix( F, material.iridescenceFresnel, material.iridescence );\\n\\t#endif\\n\\t#ifdef USE_ANISOTROPY\\n\\t\\tfloat dotTL = dot( material.anisotropyT, lightDir );\\n\\t\\tfloat dotTV = dot( material.anisotropyT, viewDir );\\n\\t\\tfloat dotTH = dot( material.anisotropyT, halfDir );\\n\\t\\tfloat dotBL = dot( material.anisotropyB, lightDir );\\n\\t\\tfloat dotBV = dot( material.anisotropyB, viewDir );\\n\\t\\tfloat dotBH = dot( material.anisotropyB, halfDir );\\n\\t\\tfloat V = V_GGX_SmithCorrelated_Anisotropic( material.alphaT, alpha, dotTV, dotBV, dotTL, dotBL, dotNV, dotNL );\\n\\t\\tfloat D = D_GGX_Anisotropic( material.alphaT, alpha, dotNH, dotTH, dotBH );\\n\\t#else\\n\\t\\tfloat V = V_GGX_SmithCorrelated( alpha, dotNL, dotNV );\\n\\t\\tfloat D = D_GGX( alpha, dotNH );\\n\\t#endif\\n\\treturn F * ( V * D );\\n}\\nvec2 LTC_Uv( const in vec3 N, const in vec3 V, const in float roughness ) {\\n\\tconst float LUT_SIZE = 64.0;\\n\\tconst float LUT_SCALE = ( LUT_SIZE - 1.0 ) / LUT_SIZE;\\n\\tconst float LUT_BIAS = 0.5 / LUT_SIZE;\\n\\tfloat dotNV = saturate( dot( N, V ) );\\n\\tvec2 uv = vec2( roughness, sqrt( 1.0 - dotNV ) );\\n\\tuv = uv * LUT_SCALE + LUT_BIAS;\\n\\treturn uv;\\n}\\nfloat LTC_ClippedSphereFormFactor( const in vec3 f ) {\\n\\tfloat l = length( f );\\n\\treturn max( ( l * l + f.z ) / ( l + 1.0 ), 0.0 );\\n}\\nvec3 LTC_EdgeVectorFormFactor( const in vec3 v1, const in vec3 v2 ) {\\n\\tfloat x = dot( v1, v2 );\\n\\tfloat y = abs( x );\\n\\tfloat a = 0.8543985 + ( 0.4965155 + 0.0145206 * y ) * y;\\n\\tfloat b = 3.4175940 + ( 4.1616724 + y ) * y;\\n\\tfloat v = a / b;\\n\\tfloat theta_sintheta = ( x > 0.0 ) ? v : 0.5 * inversesqrt( max( 1.0 - x * x, 1e-7 ) ) - v;\\n\\treturn cross( v1, v2 ) * theta_sintheta;\\n}\\nvec3 LTC_Evaluate( const in vec3 N, const in vec3 V, const in vec3 P, const in mat3 mInv, const in vec3 rectCoords[ 4 ] ) {\\n\\tvec3 v1 = rectCoords[ 1 ] - rectCoords[ 0 ];\\n\\tvec3 v2 = rectCoords[ 3 ] - rectCoords[ 0 ];\\n\\tvec3 lightNormal = cross( v1, v2 );\\n\\tif( dot( lightNormal, P - rectCoords[ 0 ] ) < 0.0 ) return vec3( 0.0 );\\n\\tvec3 T1, T2;\\n\\tT1 = normalize( V - N * dot( V, N ) );\\n\\tT2 = - cross( N, T1 );\\n\\tmat3 mat = mInv * transposeMat3( mat3( T1, T2, N ) );\\n\\tvec3 coords[ 4 ];\\n\\tcoords[ 0 ] = mat * ( rectCoords[ 0 ] - P );\\n\\tcoords[ 1 ] = mat * ( rectCoords[ 1 ] - P );\\n\\tcoords[ 2 ] = mat * ( rectCoords[ 2 ] - P );\\n\\tcoords[ 3 ] = mat * ( rectCoords[ 3 ] - P );\\n\\tcoords[ 0 ] = normalize( coords[ 0 ] );\\n\\tcoords[ 1 ] = normalize( coords[ 1 ] );\\n\\tcoords[ 2 ] = normalize( coords[ 2 ] );\\n\\tcoords[ 3 ] = normalize( coords[ 3 ] );\\n\\tvec3 vectorFormFactor = vec3( 0.0 );\\n\\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 0 ], coords[ 1 ] );\\n\\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 1 ], coords[ 2 ] );\\n\\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 2 ], coords[ 3 ] );\\n\\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 3 ], coords[ 0 ] );\\n\\tfloat result = LTC_ClippedSphereFormFactor( vectorFormFactor );\\n\\treturn vec3( result );\\n}\\n#if defined( USE_SHEEN )\\nfloat D_Charlie( float roughness, float dotNH ) {\\n\\tfloat alpha = pow2( roughness );\\n\\tfloat invAlpha = 1.0 / alpha;\\n\\tfloat cos2h = dotNH * dotNH;\\n\\tfloat sin2h = max( 1.0 - cos2h, 0.0078125 );\\n\\treturn ( 2.0 + invAlpha ) * pow( sin2h, invAlpha * 0.5 ) / ( 2.0 * PI );\\n}\\nfloat V_Neubelt( float dotNV, float dotNL ) {\\n\\treturn saturate( 1.0 / ( 4.0 * ( dotNL + dotNV - dotNL * dotNV ) ) );\\n}\\nvec3 BRDF_Sheen( const in vec3 lightDir, const in vec3 viewDir, const in vec3 normal, vec3 sheenColor, const in float sheenRoughness ) {\\n\\tvec3 halfDir = normalize( lightDir + viewDir );\\n\\tfloat dotNL = saturate( dot( normal, lightDir ) );\\n\\tfloat dotNV = saturate( dot( normal, viewDir ) );\\n\\tfloat dotNH = saturate( dot( normal, halfDir ) );\\n\\tfloat D = D_Charlie( sheenRoughness, dotNH );\\n\\tfloat V = V_Neubelt( dotNV, dotNL );\\n\\treturn sheenColor * ( D * V );\\n}\\n#endif\\nfloat IBLSheenBRDF( const in vec3 normal, const in vec3 viewDir, const in float roughness ) {\\n\\tfloat dotNV = saturate( dot( normal, viewDir ) );\\n\\tfloat r2 = roughness * roughness;\\n\\tfloat a = roughness < 0.25 ? -339.2 * r2 + 161.4 * roughness - 25.9 : -8.48 * r2 + 14.3 * roughness - 9.95;\\n\\tfloat b = roughness < 0.25 ? 44.0 * r2 - 23.7 * roughness + 3.26 : 1.97 * r2 - 3.27 * roughness + 0.72;\\n\\tfloat DG = exp( a * dotNV + b ) + ( roughness < 0.25 ? 0.0 : 0.1 * ( roughness - 0.25 ) );\\n\\treturn saturate( DG * RECIPROCAL_PI );\\n}\\nvec2 DFGApprox( const in vec3 normal, const in vec3 viewDir, const in float roughness ) {\\n\\tfloat dotNV = saturate( dot( normal, viewDir ) );\\n\\tconst vec4 c0 = vec4( - 1, - 0.0275, - 0.572, 0.022 );\\n\\tconst vec4 c1 = vec4( 1, 0.0425, 1.04, - 0.04 );\\n\\tvec4 r = roughness * c0 + c1;\\n\\tfloat a004 = min( r.x * r.x, exp2( - 9.28 * dotNV ) ) * r.x + r.y;\\n\\tvec2 fab = vec2( - 1.04, 1.04 ) * a004 + r.zw;\\n\\treturn fab;\\n}\\nvec3 EnvironmentBRDF( const in vec3 normal, const in vec3 viewDir, const in vec3 specularColor, const in float specularF90, const in float roughness ) {\\n\\tvec2 fab = DFGApprox( normal, viewDir, roughness );\\n\\treturn specularColor * fab.x + specularF90 * fab.y;\\n}\\n#ifdef USE_IRIDESCENCE\\nvoid computeMultiscatteringIridescence( const in vec3 normal, const in vec3 viewDir, const in vec3 specularColor, const in float specularF90, const in float iridescence, const in vec3 iridescenceF0, const in float roughness, inout vec3 singleScatter, inout vec3 multiScatter ) {\\n#else\\nvoid computeMultiscattering( const in vec3 normal, const in vec3 viewDir, const in vec3 specularColor, const in float specularF90, const in float roughness, inout vec3 singleScatter, inout vec3 multiScatter ) {\\n#endif\\n\\tvec2 fab = DFGApprox( normal, viewDir, roughness );\\n\\t#ifdef USE_IRIDESCENCE\\n\\t\\tvec3 Fr = mix( specularColor, iridescenceF0, iridescence );\\n\\t#else\\n\\t\\tvec3 Fr = specularColor;\\n\\t#endif\\n\\tvec3 FssEss = Fr * fab.x + specularF90 * fab.y;\\n\\tfloat Ess = fab.x + fab.y;\\n\\tfloat Ems = 1.0 - Ess;\\n\\tvec3 Favg = Fr + ( 1.0 - Fr ) * 0.047619;\\tvec3 Fms = FssEss * Favg / ( 1.0 - Ems * Favg );\\n\\tsingleScatter += FssEss;\\n\\tmultiScatter += Fms * Ems;\\n}\\n#if NUM_RECT_AREA_LIGHTS > 0\\n\\tvoid RE_Direct_RectArea_Physical( const in RectAreaLight rectAreaLight, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\\n\\t\\tvec3 normal = geometryNormal;\\n\\t\\tvec3 viewDir = geometryViewDir;\\n\\t\\tvec3 position = geometryPosition;\\n\\t\\tvec3 lightPos = rectAreaLight.position;\\n\\t\\tvec3 halfWidth = rectAreaLight.halfWidth;\\n\\t\\tvec3 halfHeight = rectAreaLight.halfHeight;\\n\\t\\tvec3 lightColor = rectAreaLight.color;\\n\\t\\tfloat roughness = material.roughness;\\n\\t\\tvec3 rectCoords[ 4 ];\\n\\t\\trectCoords[ 0 ] = lightPos + halfWidth - halfHeight;\\t\\trectCoords[ 1 ] = lightPos - halfWidth - halfHeight;\\n\\t\\trectCoords[ 2 ] = lightPos - halfWidth + halfHeight;\\n\\t\\trectCoords[ 3 ] = lightPos + halfWidth + halfHeight;\\n\\t\\tvec2 uv = LTC_Uv( normal, viewDir, roughness );\\n\\t\\tvec4 t1 = texture2D( ltc_1, uv );\\n\\t\\tvec4 t2 = texture2D( ltc_2, uv );\\n\\t\\tmat3 mInv = mat3(\\n\\t\\t\\tvec3( t1.x, 0, t1.y ),\\n\\t\\t\\tvec3( 0, 1, 0 ),\\n\\t\\t\\tvec3( t1.z, 0, t1.w )\\n\\t\\t);\\n\\t\\tvec3 fresnel = ( material.specularColor * t2.x + ( vec3( 1.0 ) - material.specularColor ) * t2.y );\\n\\t\\treflectedLight.directSpecular += lightColor * fresnel * LTC_Evaluate( normal, viewDir, position, mInv, rectCoords );\\n\\t\\treflectedLight.directDiffuse += lightColor * material.diffuseColor * LTC_Evaluate( normal, viewDir, position, mat3( 1.0 ), rectCoords );\\n\\t}\\n#endif\\nvoid RE_Direct_Physical( const in IncidentLight directLight, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\\n\\tfloat dotNL = saturate( dot( geometryNormal, directLight.direction ) );\\n\\tvec3 irradiance = dotNL * directLight.color;\\n\\t#ifdef USE_CLEARCOAT\\n\\t\\tfloat dotNLcc = saturate( dot( geometryClearcoatNormal, directLight.direction ) );\\n\\t\\tvec3 ccIrradiance = dotNLcc * directLight.color;\\n\\t\\tclearcoatSpecularDirect += ccIrradiance * BRDF_GGX_Clearcoat( directLight.direction, geometryViewDir, geometryClearcoatNormal, material );\\n\\t#endif\\n\\t#ifdef USE_SHEEN\\n\\t\\tsheenSpecularDirect += irradiance * BRDF_Sheen( directLight.direction, geometryViewDir, geometryNormal, material.sheenColor, material.sheenRoughness );\\n\\t#endif\\n\\treflectedLight.directSpecular += irradiance * BRDF_GGX( directLight.direction, geometryViewDir, geometryNormal, material );\\n\\treflectedLight.directDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\\n}\\nvoid RE_IndirectDiffuse_Physical( const in vec3 irradiance, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\\n\\treflectedLight.indirectDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\\n}\\nvoid RE_IndirectSpecular_Physical( const in vec3 radiance, const in vec3 irradiance, const in vec3 clearcoatRadiance, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in PhysicalMaterial material, inout ReflectedLight reflectedLight) {\\n\\t#ifdef USE_CLEARCOAT\\n\\t\\tclearcoatSpecularIndirect += clearcoatRadiance * EnvironmentBRDF( geometryClearcoatNormal, geometryViewDir, material.clearcoatF0, material.clearcoatF90, material.clearcoatRoughness );\\n\\t#endif\\n\\t#ifdef USE_SHEEN\\n\\t\\tsheenSpecularIndirect += irradiance * material.sheenColor * IBLSheenBRDF( geometryNormal, geometryViewDir, material.sheenRoughness );\\n\\t#endif\\n\\tvec3 singleScattering = vec3( 0.0 );\\n\\tvec3 multiScattering = vec3( 0.0 );\\n\\tvec3 cosineWeightedIrradiance = irradiance * RECIPROCAL_PI;\\n\\t#ifdef USE_IRIDESCENCE\\n\\t\\tcomputeMultiscatteringIridescence( geometryNormal, geometryViewDir, material.specularColor, material.specularF90, material.iridescence, material.iridescenceFresnel, material.roughness, singleScattering, multiScattering );\\n\\t#else\\n\\t\\tcomputeMultiscattering( geometryNormal, geometryViewDir, material.specularColor, material.specularF90, material.roughness, singleScattering, multiScattering );\\n\\t#endif\\n\\tvec3 totalScattering = singleScattering + multiScattering;\\n\\tvec3 diffuse = material.diffuseColor * ( 1.0 - max( max( totalScattering.r, totalScattering.g ), totalScattering.b ) );\\n\\treflectedLight.indirectSpecular += radiance * singleScattering;\\n\\treflectedLight.indirectSpecular += multiScattering * cosineWeightedIrradiance;\\n\\treflectedLight.indirectDiffuse += diffuse * cosineWeightedIrradiance;\\n}\\n#define RE_Direct\\t\\t\\t\\tRE_Direct_Physical\\n#define RE_Direct_RectArea\\t\\tRE_Direct_RectArea_Physical\\n#define RE_IndirectDiffuse\\t\\tRE_IndirectDiffuse_Physical\\n#define RE_IndirectSpecular\\t\\tRE_IndirectSpecular_Physical\\nfloat computeSpecularOcclusion( const in float dotNV, const in float ambientOcclusion, const in float roughness ) {\\n\\treturn saturate( pow( dotNV + ambientOcclusion, exp2( - 16.0 * roughness - 1.0 ) ) - 1.0 + ambientOcclusion );\\n}\";\n\nvar lights_fragment_begin = \"\\nvec3 geometryPosition = - vViewPosition;\\nvec3 geometryNormal = normal;\\nvec3 geometryViewDir = ( isOrthographic ) ? vec3( 0, 0, 1 ) : normalize( vViewPosition );\\nvec3 geometryClearcoatNormal = vec3( 0.0 );\\n#ifdef USE_CLEARCOAT\\n\\tgeometryClearcoatNormal = clearcoatNormal;\\n#endif\\n#ifdef USE_IRIDESCENCE\\n\\tfloat dotNVi = saturate( dot( normal, geometryViewDir ) );\\n\\tif ( material.iridescenceThickness == 0.0 ) {\\n\\t\\tmaterial.iridescence = 0.0;\\n\\t} else {\\n\\t\\tmaterial.iridescence = saturate( material.iridescence );\\n\\t}\\n\\tif ( material.iridescence > 0.0 ) {\\n\\t\\tmaterial.iridescenceFresnel = evalIridescence( 1.0, material.iridescenceIOR, dotNVi, material.iridescenceThickness, material.specularColor );\\n\\t\\tmaterial.iridescenceF0 = Schlick_to_F0( material.iridescenceFresnel, 1.0, dotNVi );\\n\\t}\\n#endif\\nIncidentLight directLight;\\n#if ( NUM_POINT_LIGHTS > 0 ) && defined( RE_Direct )\\n\\tPointLight pointLight;\\n\\t#if defined( USE_SHADOWMAP ) && NUM_POINT_LIGHT_SHADOWS > 0\\n\\tPointLightShadow pointLightShadow;\\n\\t#endif\\n\\t#pragma unroll_loop_start\\n\\tfor ( int i = 0; i < NUM_POINT_LIGHTS; i ++ ) {\\n\\t\\tpointLight = pointLights[ i ];\\n\\t\\tgetPointLightInfo( pointLight, geometryPosition, directLight );\\n\\t\\t#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_POINT_LIGHT_SHADOWS )\\n\\t\\tpointLightShadow = pointLightShadows[ i ];\\n\\t\\tdirectLight.color *= ( directLight.visible && receiveShadow ) ? getPointShadow( pointShadowMap[ i ], pointLightShadow.shadowMapSize, pointLightShadow.shadowBias, pointLightShadow.shadowRadius, vPointShadowCoord[ i ], pointLightShadow.shadowCameraNear, pointLightShadow.shadowCameraFar ) : 1.0;\\n\\t\\t#endif\\n\\t\\tRE_Direct( directLight, geometryPosition, geometryNormal, geometryViewDir, geometryClearcoatNormal, material, reflectedLight );\\n\\t}\\n\\t#pragma unroll_loop_end\\n#endif\\n#if ( NUM_SPOT_LIGHTS > 0 ) && defined( RE_Direct )\\n\\tSpotLight spotLight;\\n\\tvec4 spotColor;\\n\\tvec3 spotLightCoord;\\n\\tbool inSpotLightMap;\\n\\t#if defined( USE_SHADOWMAP ) && NUM_SPOT_LIGHT_SHADOWS > 0\\n\\tSpotLightShadow spotLightShadow;\\n\\t#endif\\n\\t#pragma unroll_loop_start\\n\\tfor ( int i = 0; i < NUM_SPOT_LIGHTS; i ++ ) {\\n\\t\\tspotLight = spotLights[ i ];\\n\\t\\tgetSpotLightInfo( spotLight, geometryPosition, directLight );\\n\\t\\t#if ( UNROLLED_LOOP_INDEX < NUM_SPOT_LIGHT_SHADOWS_WITH_MAPS )\\n\\t\\t#define SPOT_LIGHT_MAP_INDEX UNROLLED_LOOP_INDEX\\n\\t\\t#elif ( UNROLLED_LOOP_INDEX < NUM_SPOT_LIGHT_SHADOWS )\\n\\t\\t#define SPOT_LIGHT_MAP_INDEX NUM_SPOT_LIGHT_MAPS\\n\\t\\t#else\\n\\t\\t#define SPOT_LIGHT_MAP_INDEX ( UNROLLED_LOOP_INDEX - NUM_SPOT_LIGHT_SHADOWS + NUM_SPOT_LIGHT_SHADOWS_WITH_MAPS )\\n\\t\\t#endif\\n\\t\\t#if ( SPOT_LIGHT_MAP_INDEX < NUM_SPOT_LIGHT_MAPS )\\n\\t\\t\\tspotLightCoord = vSpotLightCoord[ i ].xyz / vSpotLightCoord[ i ].w;\\n\\t\\t\\tinSpotLightMap = all( lessThan( abs( spotLightCoord * 2. - 1. ), vec3( 1.0 ) ) );\\n\\t\\t\\tspotColor = texture2D( spotLightMap[ SPOT_LIGHT_MAP_INDEX ], spotLightCoord.xy );\\n\\t\\t\\tdirectLight.color = inSpotLightMap ? directLight.color * spotColor.rgb : directLight.color;\\n\\t\\t#endif\\n\\t\\t#undef SPOT_LIGHT_MAP_INDEX\\n\\t\\t#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_SPOT_LIGHT_SHADOWS )\\n\\t\\tspotLightShadow = spotLightShadows[ i ];\\n\\t\\tdirectLight.color *= ( directLight.visible && receiveShadow ) ? getShadow( spotShadowMap[ i ], spotLightShadow.shadowMapSize, spotLightShadow.shadowBias, spotLightShadow.shadowRadius, vSpotLightCoord[ i ] ) : 1.0;\\n\\t\\t#endif\\n\\t\\tRE_Direct( directLight, geometryPosition, geometryNormal, geometryViewDir, geometryClearcoatNormal, material, reflectedLight );\\n\\t}\\n\\t#pragma unroll_loop_end\\n#endif\\n#if ( NUM_DIR_LIGHTS > 0 ) && defined( RE_Direct )\\n\\tDirectionalLight directionalLight;\\n\\t#if defined( USE_SHADOWMAP ) && NUM_DIR_LIGHT_SHADOWS > 0\\n\\tDirectionalLightShadow directionalLightShadow;\\n\\t#endif\\n\\t#pragma unroll_loop_start\\n\\tfor ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {\\n\\t\\tdirectionalLight = directionalLights[ i ];\\n\\t\\tgetDirectionalLightInfo( directionalLight, directLight );\\n\\t\\t#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_DIR_LIGHT_SHADOWS )\\n\\t\\tdirectionalLightShadow = directionalLightShadows[ i ];\\n\\t\\tdirectLight.color *= ( directLight.visible && receiveShadow ) ? getShadow( directionalShadowMap[ i ], directionalLightShadow.shadowMapSize, directionalLightShadow.shadowBias, directionalLightShadow.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;\\n\\t\\t#endif\\n\\t\\tRE_Direct( directLight, geometryPosition, geometryNormal, geometryViewDir, geometryClearcoatNormal, material, reflectedLight );\\n\\t}\\n\\t#pragma unroll_loop_end\\n#endif\\n#if ( NUM_RECT_AREA_LIGHTS > 0 ) && defined( RE_Direct_RectArea )\\n\\tRectAreaLight rectAreaLight;\\n\\t#pragma unroll_loop_start\\n\\tfor ( int i = 0; i < NUM_RECT_AREA_LIGHTS; i ++ ) {\\n\\t\\trectAreaLight = rectAreaLights[ i ];\\n\\t\\tRE_Direct_RectArea( rectAreaLight, geometryPosition, geometryNormal, geometryViewDir, geometryClearcoatNormal, material, reflectedLight );\\n\\t}\\n\\t#pragma unroll_loop_end\\n#endif\\n#if defined( RE_IndirectDiffuse )\\n\\tvec3 iblIrradiance = vec3( 0.0 );\\n\\tvec3 irradiance = getAmbientLightIrradiance( ambientLightColor );\\n\\t#if defined( USE_LIGHT_PROBES )\\n\\t\\tirradiance += getLightProbeIrradiance( lightProbe, geometryNormal );\\n\\t#endif\\n\\t#if ( NUM_HEMI_LIGHTS > 0 )\\n\\t\\t#pragma unroll_loop_start\\n\\t\\tfor ( int i = 0; i < NUM_HEMI_LIGHTS; i ++ ) {\\n\\t\\t\\tirradiance += getHemisphereLightIrradiance( hemisphereLights[ i ], geometryNormal );\\n\\t\\t}\\n\\t\\t#pragma unroll_loop_end\\n\\t#endif\\n#endif\\n#if defined( RE_IndirectSpecular )\\n\\tvec3 radiance = vec3( 0.0 );\\n\\tvec3 clearcoatRadiance = vec3( 0.0 );\\n#endif\";\n\nvar lights_fragment_maps = \"#if defined( RE_IndirectDiffuse )\\n\\t#ifdef USE_LIGHTMAP\\n\\t\\tvec4 lightMapTexel = texture2D( lightMap, vLightMapUv );\\n\\t\\tvec3 lightMapIrradiance = lightMapTexel.rgb * lightMapIntensity;\\n\\t\\tirradiance += lightMapIrradiance;\\n\\t#endif\\n\\t#if defined( USE_ENVMAP ) && defined( STANDARD ) && defined( ENVMAP_TYPE_CUBE_UV )\\n\\t\\tiblIrradiance += getIBLIrradiance( geometryNormal );\\n\\t#endif\\n#endif\\n#if defined( USE_ENVMAP ) && defined( RE_IndirectSpecular )\\n\\t#ifdef USE_ANISOTROPY\\n\\t\\tradiance += getIBLAnisotropyRadiance( geometryViewDir, geometryNormal, material.roughness, material.anisotropyB, material.anisotropy );\\n\\t#else\\n\\t\\tradiance += getIBLRadiance( geometryViewDir, geometryNormal, material.roughness );\\n\\t#endif\\n\\t#ifdef USE_CLEARCOAT\\n\\t\\tclearcoatRadiance += getIBLRadiance( geometryViewDir, geometryClearcoatNormal, material.clearcoatRoughness );\\n\\t#endif\\n#endif\";\n\nvar lights_fragment_end = \"#if defined( RE_IndirectDiffuse )\\n\\tRE_IndirectDiffuse( irradiance, geometryPosition, geometryNormal, geometryViewDir, geometryClearcoatNormal, material, reflectedLight );\\n#endif\\n#if defined( RE_IndirectSpecular )\\n\\tRE_IndirectSpecular( radiance, iblIrradiance, clearcoatRadiance, geometryPosition, geometryNormal, geometryViewDir, geometryClearcoatNormal, material, reflectedLight );\\n#endif\";\n\nvar logdepthbuf_fragment = \"#if defined( USE_LOGDEPTHBUF )\\n\\tgl_FragDepth = vIsPerspective == 0.0 ? gl_FragCoord.z : log2( vFragDepth ) * logDepthBufFC * 0.5;\\n#endif\";\n\nvar logdepthbuf_pars_fragment = \"#if defined( USE_LOGDEPTHBUF )\\n\\tuniform float logDepthBufFC;\\n\\tvarying float vFragDepth;\\n\\tvarying float vIsPerspective;\\n#endif\";\n\nvar logdepthbuf_pars_vertex = \"#ifdef USE_LOGDEPTHBUF\\n\\tvarying float vFragDepth;\\n\\tvarying float vIsPerspective;\\n#endif\";\n\nvar logdepthbuf_vertex = \"#ifdef USE_LOGDEPTHBUF\\n\\tvFragDepth = 1.0 + gl_Position.w;\\n\\tvIsPerspective = float( isPerspectiveMatrix( projectionMatrix ) );\\n#endif\";\n\nvar map_fragment = \"#ifdef USE_MAP\\n\\tvec4 sampledDiffuseColor = texture2D( map, vMapUv );\\n\\t#ifdef DECODE_VIDEO_TEXTURE\\n\\t\\tsampledDiffuseColor = vec4( mix( pow( sampledDiffuseColor.rgb * 0.9478672986 + vec3( 0.0521327014 ), vec3( 2.4 ) ), sampledDiffuseColor.rgb * 0.0773993808, vec3( lessThanEqual( sampledDiffuseColor.rgb, vec3( 0.04045 ) ) ) ), sampledDiffuseColor.w );\\n\\t\\n\\t#endif\\n\\tdiffuseColor *= sampledDiffuseColor;\\n#endif\";\n\nvar map_pars_fragment = \"#ifdef USE_MAP\\n\\tuniform sampler2D map;\\n#endif\";\n\nvar map_particle_fragment = \"#if defined( USE_MAP ) || defined( USE_ALPHAMAP )\\n\\t#if defined( USE_POINTS_UV )\\n\\t\\tvec2 uv = vUv;\\n\\t#else\\n\\t\\tvec2 uv = ( uvTransform * vec3( gl_PointCoord.x, 1.0 - gl_PointCoord.y, 1 ) ).xy;\\n\\t#endif\\n#endif\\n#ifdef USE_MAP\\n\\tdiffuseColor *= texture2D( map, uv );\\n#endif\\n#ifdef USE_ALPHAMAP\\n\\tdiffuseColor.a *= texture2D( alphaMap, uv ).g;\\n#endif\";\n\nvar map_particle_pars_fragment = \"#if defined( USE_POINTS_UV )\\n\\tvarying vec2 vUv;\\n#else\\n\\t#if defined( USE_MAP ) || defined( USE_ALPHAMAP )\\n\\t\\tuniform mat3 uvTransform;\\n\\t#endif\\n#endif\\n#ifdef USE_MAP\\n\\tuniform sampler2D map;\\n#endif\\n#ifdef USE_ALPHAMAP\\n\\tuniform sampler2D alphaMap;\\n#endif\";\n\nvar metalnessmap_fragment = \"float metalnessFactor = metalness;\\n#ifdef USE_METALNESSMAP\\n\\tvec4 texelMetalness = texture2D( metalnessMap, vMetalnessMapUv );\\n\\tmetalnessFactor *= texelMetalness.b;\\n#endif\";\n\nvar metalnessmap_pars_fragment = \"#ifdef USE_METALNESSMAP\\n\\tuniform sampler2D metalnessMap;\\n#endif\";\n\nvar morphinstance_vertex = \"#ifdef USE_INSTANCING_MORPH\\n\\tfloat morphTargetInfluences[ MORPHTARGETS_COUNT ];\\n\\tfloat morphTargetBaseInfluence = texelFetch( morphTexture, ivec2( 0, gl_InstanceID ), 0 ).r;\\n\\tfor ( int i = 0; i < MORPHTARGETS_COUNT; i ++ ) {\\n\\t\\tmorphTargetInfluences[i] = texelFetch( morphTexture, ivec2( i + 1, gl_InstanceID ), 0 ).r;\\n\\t}\\n#endif\";\n\nvar morphcolor_vertex = \"#if defined( USE_MORPHCOLORS )\\n\\tvColor *= morphTargetBaseInfluence;\\n\\tfor ( int i = 0; i < MORPHTARGETS_COUNT; i ++ ) {\\n\\t\\t#if defined( USE_COLOR_ALPHA )\\n\\t\\t\\tif ( morphTargetInfluences[ i ] != 0.0 ) vColor += getMorph( gl_VertexID, i, 2 ) * morphTargetInfluences[ i ];\\n\\t\\t#elif defined( USE_COLOR )\\n\\t\\t\\tif ( morphTargetInfluences[ i ] != 0.0 ) vColor += getMorph( gl_VertexID, i, 2 ).rgb * morphTargetInfluences[ i ];\\n\\t\\t#endif\\n\\t}\\n#endif\";\n\nvar morphnormal_vertex = \"#ifdef USE_MORPHNORMALS\\n\\tobjectNormal *= morphTargetBaseInfluence;\\n\\tfor ( int i = 0; i < MORPHTARGETS_COUNT; i ++ ) {\\n\\t\\tif ( morphTargetInfluences[ i ] != 0.0 ) objectNormal += getMorph( gl_VertexID, i, 1 ).xyz * morphTargetInfluences[ i ];\\n\\t}\\n#endif\";\n\nvar morphtarget_pars_vertex = \"#ifdef USE_MORPHTARGETS\\n\\t#ifndef USE_INSTANCING_MORPH\\n\\t\\tuniform float morphTargetBaseInfluence;\\n\\t\\tuniform float morphTargetInfluences[ MORPHTARGETS_COUNT ];\\n\\t#endif\\n\\tuniform sampler2DArray morphTargetsTexture;\\n\\tuniform ivec2 morphTargetsTextureSize;\\n\\tvec4 getMorph( const in int vertexIndex, const in int morphTargetIndex, const in int offset ) {\\n\\t\\tint texelIndex = vertexIndex * MORPHTARGETS_TEXTURE_STRIDE + offset;\\n\\t\\tint y = texelIndex / morphTargetsTextureSize.x;\\n\\t\\tint x = texelIndex - y * morphTargetsTextureSize.x;\\n\\t\\tivec3 morphUV = ivec3( x, y, morphTargetIndex );\\n\\t\\treturn texelFetch( morphTargetsTexture, morphUV, 0 );\\n\\t}\\n#endif\";\n\nvar morphtarget_vertex = \"#ifdef USE_MORPHTARGETS\\n\\ttransformed *= morphTargetBaseInfluence;\\n\\tfor ( int i = 0; i < MORPHTARGETS_COUNT; i ++ ) {\\n\\t\\tif ( morphTargetInfluences[ i ] != 0.0 ) transformed += getMorph( gl_VertexID, i, 0 ).xyz * morphTargetInfluences[ i ];\\n\\t}\\n#endif\";\n\nvar normal_fragment_begin = \"float faceDirection = gl_FrontFacing ? 1.0 : - 1.0;\\n#ifdef FLAT_SHADED\\n\\tvec3 fdx = dFdx( vViewPosition );\\n\\tvec3 fdy = dFdy( vViewPosition );\\n\\tvec3 normal = normalize( cross( fdx, fdy ) );\\n#else\\n\\tvec3 normal = normalize( vNormal );\\n\\t#ifdef DOUBLE_SIDED\\n\\t\\tnormal *= faceDirection;\\n\\t#endif\\n#endif\\n#if defined( USE_NORMALMAP_TANGENTSPACE ) || defined( USE_CLEARCOAT_NORMALMAP ) || defined( USE_ANISOTROPY )\\n\\t#ifdef USE_TANGENT\\n\\t\\tmat3 tbn = mat3( normalize( vTangent ), normalize( vBitangent ), normal );\\n\\t#else\\n\\t\\tmat3 tbn = getTangentFrame( - vViewPosition, normal,\\n\\t\\t#if defined( USE_NORMALMAP )\\n\\t\\t\\tvNormalMapUv\\n\\t\\t#elif defined( USE_CLEARCOAT_NORMALMAP )\\n\\t\\t\\tvClearcoatNormalMapUv\\n\\t\\t#else\\n\\t\\t\\tvUv\\n\\t\\t#endif\\n\\t\\t);\\n\\t#endif\\n\\t#if defined( DOUBLE_SIDED ) && ! defined( FLAT_SHADED )\\n\\t\\ttbn[0] *= faceDirection;\\n\\t\\ttbn[1] *= faceDirection;\\n\\t#endif\\n#endif\\n#ifdef USE_CLEARCOAT_NORMALMAP\\n\\t#ifdef USE_TANGENT\\n\\t\\tmat3 tbn2 = mat3( normalize( vTangent ), normalize( vBitangent ), normal );\\n\\t#else\\n\\t\\tmat3 tbn2 = getTangentFrame( - vViewPosition, normal, vClearcoatNormalMapUv );\\n\\t#endif\\n\\t#if defined( DOUBLE_SIDED ) && ! defined( FLAT_SHADED )\\n\\t\\ttbn2[0] *= faceDirection;\\n\\t\\ttbn2[1] *= faceDirection;\\n\\t#endif\\n#endif\\nvec3 nonPerturbedNormal = normal;\";\n\nvar normal_fragment_maps = \"#ifdef USE_NORMALMAP_OBJECTSPACE\\n\\tnormal = texture2D( normalMap, vNormalMapUv ).xyz * 2.0 - 1.0;\\n\\t#ifdef FLIP_SIDED\\n\\t\\tnormal = - normal;\\n\\t#endif\\n\\t#ifdef DOUBLE_SIDED\\n\\t\\tnormal = normal * faceDirection;\\n\\t#endif\\n\\tnormal = normalize( normalMatrix * normal );\\n#elif defined( USE_NORMALMAP_TANGENTSPACE )\\n\\tvec3 mapN = texture2D( normalMap, vNormalMapUv ).xyz * 2.0 - 1.0;\\n\\tmapN.xy *= normalScale;\\n\\tnormal = normalize( tbn * mapN );\\n#elif defined( USE_BUMPMAP )\\n\\tnormal = perturbNormalArb( - vViewPosition, normal, dHdxy_fwd(), faceDirection );\\n#endif\";\n\nvar normal_pars_fragment = \"#ifndef FLAT_SHADED\\n\\tvarying vec3 vNormal;\\n\\t#ifdef USE_TANGENT\\n\\t\\tvarying vec3 vTangent;\\n\\t\\tvarying vec3 vBitangent;\\n\\t#endif\\n#endif\";\n\nvar normal_pars_vertex = \"#ifndef FLAT_SHADED\\n\\tvarying vec3 vNormal;\\n\\t#ifdef USE_TANGENT\\n\\t\\tvarying vec3 vTangent;\\n\\t\\tvarying vec3 vBitangent;\\n\\t#endif\\n#endif\";\n\nvar normal_vertex = \"#ifndef FLAT_SHADED\\n\\tvNormal = normalize( transformedNormal );\\n\\t#ifdef USE_TANGENT\\n\\t\\tvTangent = normalize( transformedTangent );\\n\\t\\tvBitangent = normalize( cross( vNormal, vTangent ) * tangent.w );\\n\\t#endif\\n#endif\";\n\nvar normalmap_pars_fragment = \"#ifdef USE_NORMALMAP\\n\\tuniform sampler2D normalMap;\\n\\tuniform vec2 normalScale;\\n#endif\\n#ifdef USE_NORMALMAP_OBJECTSPACE\\n\\tuniform mat3 normalMatrix;\\n#endif\\n#if ! defined ( USE_TANGENT ) && ( defined ( USE_NORMALMAP_TANGENTSPACE ) || defined ( USE_CLEARCOAT_NORMALMAP ) || defined( USE_ANISOTROPY ) )\\n\\tmat3 getTangentFrame( vec3 eye_pos, vec3 surf_norm, vec2 uv ) {\\n\\t\\tvec3 q0 = dFdx( eye_pos.xyz );\\n\\t\\tvec3 q1 = dFdy( eye_pos.xyz );\\n\\t\\tvec2 st0 = dFdx( uv.st );\\n\\t\\tvec2 st1 = dFdy( uv.st );\\n\\t\\tvec3 N = surf_norm;\\n\\t\\tvec3 q1perp = cross( q1, N );\\n\\t\\tvec3 q0perp = cross( N, q0 );\\n\\t\\tvec3 T = q1perp * st0.x + q0perp * st1.x;\\n\\t\\tvec3 B = q1perp * st0.y + q0perp * st1.y;\\n\\t\\tfloat det = max( dot( T, T ), dot( B, B ) );\\n\\t\\tfloat scale = ( det == 0.0 ) ? 0.0 : inversesqrt( det );\\n\\t\\treturn mat3( T * scale, B * scale, N );\\n\\t}\\n#endif\";\n\nvar clearcoat_normal_fragment_begin = \"#ifdef USE_CLEARCOAT\\n\\tvec3 clearcoatNormal = nonPerturbedNormal;\\n#endif\";\n\nvar clearcoat_normal_fragment_maps = \"#ifdef USE_CLEARCOAT_NORMALMAP\\n\\tvec3 clearcoatMapN = texture2D( clearcoatNormalMap, vClearcoatNormalMapUv ).xyz * 2.0 - 1.0;\\n\\tclearcoatMapN.xy *= clearcoatNormalScale;\\n\\tclearcoatNormal = normalize( tbn2 * clearcoatMapN );\\n#endif\";\n\nvar clearcoat_pars_fragment = \"#ifdef USE_CLEARCOATMAP\\n\\tuniform sampler2D clearcoatMap;\\n#endif\\n#ifdef USE_CLEARCOAT_NORMALMAP\\n\\tuniform sampler2D clearcoatNormalMap;\\n\\tuniform vec2 clearcoatNormalScale;\\n#endif\\n#ifdef USE_CLEARCOAT_ROUGHNESSMAP\\n\\tuniform sampler2D clearcoatRoughnessMap;\\n#endif\";\n\nvar iridescence_pars_fragment = \"#ifdef USE_IRIDESCENCEMAP\\n\\tuniform sampler2D iridescenceMap;\\n#endif\\n#ifdef USE_IRIDESCENCE_THICKNESSMAP\\n\\tuniform sampler2D iridescenceThicknessMap;\\n#endif\";\n\nvar opaque_fragment = \"#ifdef OPAQUE\\ndiffuseColor.a = 1.0;\\n#endif\\n#ifdef USE_TRANSMISSION\\ndiffuseColor.a *= material.transmissionAlpha;\\n#endif\\ngl_FragColor = vec4( outgoingLight, diffuseColor.a );\";\n\nvar packing = \"vec3 packNormalToRGB( const in vec3 normal ) {\\n\\treturn normalize( normal ) * 0.5 + 0.5;\\n}\\nvec3 unpackRGBToNormal( const in vec3 rgb ) {\\n\\treturn 2.0 * rgb.xyz - 1.0;\\n}\\nconst float PackUpscale = 256. / 255.;const float UnpackDownscale = 255. / 256.;\\nconst vec3 PackFactors = vec3( 256. * 256. * 256., 256. * 256., 256. );\\nconst vec4 UnpackFactors = UnpackDownscale / vec4( PackFactors, 1. );\\nconst float ShiftRight8 = 1. / 256.;\\nvec4 packDepthToRGBA( const in float v ) {\\n\\tvec4 r = vec4( fract( v * PackFactors ), v );\\n\\tr.yzw -= r.xyz * ShiftRight8;\\treturn r * PackUpscale;\\n}\\nfloat unpackRGBAToDepth( const in vec4 v ) {\\n\\treturn dot( v, UnpackFactors );\\n}\\nvec2 packDepthToRG( in highp float v ) {\\n\\treturn packDepthToRGBA( v ).yx;\\n}\\nfloat unpackRGToDepth( const in highp vec2 v ) {\\n\\treturn unpackRGBAToDepth( vec4( v.xy, 0.0, 0.0 ) );\\n}\\nvec4 pack2HalfToRGBA( vec2 v ) {\\n\\tvec4 r = vec4( v.x, fract( v.x * 255.0 ), v.y, fract( v.y * 255.0 ) );\\n\\treturn vec4( r.x - r.y / 255.0, r.y, r.z - r.w / 255.0, r.w );\\n}\\nvec2 unpackRGBATo2Half( vec4 v ) {\\n\\treturn vec2( v.x + ( v.y / 255.0 ), v.z + ( v.w / 255.0 ) );\\n}\\nfloat viewZToOrthographicDepth( const in float viewZ, const in float near, const in float far ) {\\n\\treturn ( viewZ + near ) / ( near - far );\\n}\\nfloat orthographicDepthToViewZ( const in float depth, const in float near, const in float far ) {\\n\\treturn depth * ( near - far ) - near;\\n}\\nfloat viewZToPerspectiveDepth( const in float viewZ, const in float near, const in float far ) {\\n\\treturn ( ( near + viewZ ) * far ) / ( ( far - near ) * viewZ );\\n}\\nfloat perspectiveDepthToViewZ( const in float depth, const in float near, const in float far ) {\\n\\treturn ( near * far ) / ( ( far - near ) * depth - far );\\n}\";\n\nvar premultiplied_alpha_fragment = \"#ifdef PREMULTIPLIED_ALPHA\\n\\tgl_FragColor.rgb *= gl_FragColor.a;\\n#endif\";\n\nvar project_vertex = \"vec4 mvPosition = vec4( transformed, 1.0 );\\n#ifdef USE_BATCHING\\n\\tmvPosition = batchingMatrix * mvPosition;\\n#endif\\n#ifdef USE_INSTANCING\\n\\tmvPosition = instanceMatrix * mvPosition;\\n#endif\\nmvPosition = modelViewMatrix * mvPosition;\\ngl_Position = projectionMatrix * mvPosition;\";\n\nvar dithering_fragment = \"#ifdef DITHERING\\n\\tgl_FragColor.rgb = dithering( gl_FragColor.rgb );\\n#endif\";\n\nvar dithering_pars_fragment = \"#ifdef DITHERING\\n\\tvec3 dithering( vec3 color ) {\\n\\t\\tfloat grid_position = rand( gl_FragCoord.xy );\\n\\t\\tvec3 dither_shift_RGB = vec3( 0.25 / 255.0, -0.25 / 255.0, 0.25 / 255.0 );\\n\\t\\tdither_shift_RGB = mix( 2.0 * dither_shift_RGB, -2.0 * dither_shift_RGB, grid_position );\\n\\t\\treturn color + dither_shift_RGB;\\n\\t}\\n#endif\";\n\nvar roughnessmap_fragment = \"float roughnessFactor = roughness;\\n#ifdef USE_ROUGHNESSMAP\\n\\tvec4 texelRoughness = texture2D( roughnessMap, vRoughnessMapUv );\\n\\troughnessFactor *= texelRoughness.g;\\n#endif\";\n\nvar roughnessmap_pars_fragment = \"#ifdef USE_ROUGHNESSMAP\\n\\tuniform sampler2D roughnessMap;\\n#endif\";\n\nvar shadowmap_pars_fragment = \"#if NUM_SPOT_LIGHT_COORDS > 0\\n\\tvarying vec4 vSpotLightCoord[ NUM_SPOT_LIGHT_COORDS ];\\n#endif\\n#if NUM_SPOT_LIGHT_MAPS > 0\\n\\tuniform sampler2D spotLightMap[ NUM_SPOT_LIGHT_MAPS ];\\n#endif\\n#ifdef USE_SHADOWMAP\\n\\t#if NUM_DIR_LIGHT_SHADOWS > 0\\n\\t\\tuniform sampler2D directionalShadowMap[ NUM_DIR_LIGHT_SHADOWS ];\\n\\t\\tvarying vec4 vDirectionalShadowCoord[ NUM_DIR_LIGHT_SHADOWS ];\\n\\t\\tstruct DirectionalLightShadow {\\n\\t\\t\\tfloat shadowBias;\\n\\t\\t\\tfloat shadowNormalBias;\\n\\t\\t\\tfloat shadowRadius;\\n\\t\\t\\tvec2 shadowMapSize;\\n\\t\\t};\\n\\t\\tuniform DirectionalLightShadow directionalLightShadows[ NUM_DIR_LIGHT_SHADOWS ];\\n\\t#endif\\n\\t#if NUM_SPOT_LIGHT_SHADOWS > 0\\n\\t\\tuniform sampler2D spotShadowMap[ NUM_SPOT_LIGHT_SHADOWS ];\\n\\t\\tstruct SpotLightShadow {\\n\\t\\t\\tfloat shadowBias;\\n\\t\\t\\tfloat shadowNormalBias;\\n\\t\\t\\tfloat shadowRadius;\\n\\t\\t\\tvec2 shadowMapSize;\\n\\t\\t};\\n\\t\\tuniform SpotLightShadow spotLightShadows[ NUM_SPOT_LIGHT_SHADOWS ];\\n\\t#endif\\n\\t#if NUM_POINT_LIGHT_SHADOWS > 0\\n\\t\\tuniform sampler2D pointShadowMap[ NUM_POINT_LIGHT_SHADOWS ];\\n\\t\\tvarying vec4 vPointShadowCoord[ NUM_POINT_LIGHT_SHADOWS ];\\n\\t\\tstruct PointLightShadow {\\n\\t\\t\\tfloat shadowBias;\\n\\t\\t\\tfloat shadowNormalBias;\\n\\t\\t\\tfloat shadowRadius;\\n\\t\\t\\tvec2 shadowMapSize;\\n\\t\\t\\tfloat shadowCameraNear;\\n\\t\\t\\tfloat shadowCameraFar;\\n\\t\\t};\\n\\t\\tuniform PointLightShadow pointLightShadows[ NUM_POINT_LIGHT_SHADOWS ];\\n\\t#endif\\n\\tfloat texture2DCompare( sampler2D depths, vec2 uv, float compare ) {\\n\\t\\treturn step( compare, unpackRGBAToDepth( texture2D( depths, uv ) ) );\\n\\t}\\n\\tvec2 texture2DDistribution( sampler2D shadow, vec2 uv ) {\\n\\t\\treturn unpackRGBATo2Half( texture2D( shadow, uv ) );\\n\\t}\\n\\tfloat VSMShadow (sampler2D shadow, vec2 uv, float compare ){\\n\\t\\tfloat occlusion = 1.0;\\n\\t\\tvec2 distribution = texture2DDistribution( shadow, uv );\\n\\t\\tfloat hard_shadow = step( compare , distribution.x );\\n\\t\\tif (hard_shadow != 1.0 ) {\\n\\t\\t\\tfloat distance = compare - distribution.x ;\\n\\t\\t\\tfloat variance = max( 0.00000, distribution.y * distribution.y );\\n\\t\\t\\tfloat softness_probability = variance / (variance + distance * distance );\\t\\t\\tsoftness_probability = clamp( ( softness_probability - 0.3 ) / ( 0.95 - 0.3 ), 0.0, 1.0 );\\t\\t\\tocclusion = clamp( max( hard_shadow, softness_probability ), 0.0, 1.0 );\\n\\t\\t}\\n\\t\\treturn occlusion;\\n\\t}\\n\\tfloat getShadow( sampler2D shadowMap, vec2 shadowMapSize, float shadowBias, float shadowRadius, vec4 shadowCoord ) {\\n\\t\\tfloat shadow = 1.0;\\n\\t\\tshadowCoord.xyz /= shadowCoord.w;\\n\\t\\tshadowCoord.z += shadowBias;\\n\\t\\tbool inFrustum = shadowCoord.x >= 0.0 && shadowCoord.x <= 1.0 && shadowCoord.y >= 0.0 && shadowCoord.y <= 1.0;\\n\\t\\tbool frustumTest = inFrustum && shadowCoord.z <= 1.0;\\n\\t\\tif ( frustumTest ) {\\n\\t\\t#if defined( SHADOWMAP_TYPE_PCF )\\n\\t\\t\\tvec2 texelSize = vec2( 1.0 ) / shadowMapSize;\\n\\t\\t\\tfloat dx0 = - texelSize.x * shadowRadius;\\n\\t\\t\\tfloat dy0 = - texelSize.y * shadowRadius;\\n\\t\\t\\tfloat dx1 = + texelSize.x * shadowRadius;\\n\\t\\t\\tfloat dy1 = + texelSize.y * shadowRadius;\\n\\t\\t\\tfloat dx2 = dx0 / 2.0;\\n\\t\\t\\tfloat dy2 = dy0 / 2.0;\\n\\t\\t\\tfloat dx3 = dx1 / 2.0;\\n\\t\\t\\tfloat dy3 = dy1 / 2.0;\\n\\t\\t\\tshadow = (\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, dy0 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy0 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, dy0 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, dy2 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy2 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, dy2 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, 0.0 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, 0.0 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy, shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, 0.0 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, 0.0 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, dy3 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy3 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, dy3 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, dy1 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy1 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, dy1 ), shadowCoord.z )\\n\\t\\t\\t) * ( 1.0 / 17.0 );\\n\\t\\t#elif defined( SHADOWMAP_TYPE_PCF_SOFT )\\n\\t\\t\\tvec2 texelSize = vec2( 1.0 ) / shadowMapSize;\\n\\t\\t\\tfloat dx = texelSize.x;\\n\\t\\t\\tfloat dy = texelSize.y;\\n\\t\\t\\tvec2 uv = shadowCoord.xy;\\n\\t\\t\\tvec2 f = fract( uv * shadowMapSize + 0.5 );\\n\\t\\t\\tuv -= f * texelSize;\\n\\t\\t\\tshadow = (\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, uv, shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, uv + vec2( dx, 0.0 ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, uv + vec2( 0.0, dy ), shadowCoord.z ) +\\n\\t\\t\\t\\ttexture2DCompare( shadowMap, uv + texelSize, shadowCoord.z ) +\\n\\t\\t\\t\\tmix( texture2DCompare( shadowMap, uv + vec2( -dx, 0.0 ), shadowCoord.z ),\\n\\t\\t\\t\\t\\t texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, 0.0 ), shadowCoord.z ),\\n\\t\\t\\t\\t\\t f.x ) +\\n\\t\\t\\t\\tmix( texture2DCompare( shadowMap, uv + vec2( -dx, dy ), shadowCoord.z ),\\n\\t\\t\\t\\t\\t texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, dy ), shadowCoord.z ),\\n\\t\\t\\t\\t\\t f.x ) +\\n\\t\\t\\t\\tmix( texture2DCompare( shadowMap, uv + vec2( 0.0, -dy ), shadowCoord.z ),\\n\\t\\t\\t\\t\\t texture2DCompare( shadowMap, uv + vec2( 0.0, 2.0 * dy ), shadowCoord.z ),\\n\\t\\t\\t\\t\\t f.y ) +\\n\\t\\t\\t\\tmix( texture2DCompare( shadowMap, uv + vec2( dx, -dy ), shadowCoord.z ),\\n\\t\\t\\t\\t\\t texture2DCompare( shadowMap, uv + vec2( dx, 2.0 * dy ), shadowCoord.z ),\\n\\t\\t\\t\\t\\t f.y ) +\\n\\t\\t\\t\\tmix( mix( texture2DCompare( shadowMap, uv + vec2( -dx, -dy ), shadowCoord.z ),\\n\\t\\t\\t\\t\\t\\t texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, -dy ), shadowCoord.z ),\\n\\t\\t\\t\\t\\t\\t f.x ),\\n\\t\\t\\t\\t\\t mix( texture2DCompare( shadowMap, uv + vec2( -dx, 2.0 * dy ), shadowCoord.z ),\\n\\t\\t\\t\\t\\t\\t texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, 2.0 * dy ), shadowCoord.z ),\\n\\t\\t\\t\\t\\t\\t f.x ),\\n\\t\\t\\t\\t\\t f.y )\\n\\t\\t\\t) * ( 1.0 / 9.0 );\\n\\t\\t#elif defined( SHADOWMAP_TYPE_VSM )\\n\\t\\t\\tshadow = VSMShadow( shadowMap, shadowCoord.xy, shadowCoord.z );\\n\\t\\t#else\\n\\t\\t\\tshadow = texture2DCompare( shadowMap, shadowCoord.xy, shadowCoord.z );\\n\\t\\t#endif\\n\\t\\t}\\n\\t\\treturn shadow;\\n\\t}\\n\\tvec2 cubeToUV( vec3 v, float texelSizeY ) {\\n\\t\\tvec3 absV = abs( v );\\n\\t\\tfloat scaleToCube = 1.0 / max( absV.x, max( absV.y, absV.z ) );\\n\\t\\tabsV *= scaleToCube;\\n\\t\\tv *= scaleToCube * ( 1.0 - 2.0 * texelSizeY );\\n\\t\\tvec2 planar = v.xy;\\n\\t\\tfloat almostATexel = 1.5 * texelSizeY;\\n\\t\\tfloat almostOne = 1.0 - almostATexel;\\n\\t\\tif ( absV.z >= almostOne ) {\\n\\t\\t\\tif ( v.z > 0.0 )\\n\\t\\t\\t\\tplanar.x = 4.0 - v.x;\\n\\t\\t} else if ( absV.x >= almostOne ) {\\n\\t\\t\\tfloat signX = sign( v.x );\\n\\t\\t\\tplanar.x = v.z * signX + 2.0 * signX;\\n\\t\\t} else if ( absV.y >= almostOne ) {\\n\\t\\t\\tfloat signY = sign( v.y );\\n\\t\\t\\tplanar.x = v.x + 2.0 * signY + 2.0;\\n\\t\\t\\tplanar.y = v.z * signY - 2.0;\\n\\t\\t}\\n\\t\\treturn vec2( 0.125, 0.25 ) * planar + vec2( 0.375, 0.75 );\\n\\t}\\n\\tfloat getPointShadow( sampler2D shadowMap, vec2 shadowMapSize, float shadowBias, float shadowRadius, vec4 shadowCoord, float shadowCameraNear, float shadowCameraFar ) {\\n\\t\\tfloat shadow = 1.0;\\n\\t\\tvec3 lightToPosition = shadowCoord.xyz;\\n\\t\\t\\n\\t\\tfloat lightToPositionLength = length( lightToPosition );\\n\\t\\tif ( lightToPositionLength - shadowCameraFar <= 0.0 && lightToPositionLength - shadowCameraNear >= 0.0 ) {\\n\\t\\t\\tfloat dp = ( lightToPositionLength - shadowCameraNear ) / ( shadowCameraFar - shadowCameraNear );\\t\\t\\tdp += shadowBias;\\n\\t\\t\\tvec3 bd3D = normalize( lightToPosition );\\n\\t\\t\\tvec2 texelSize = vec2( 1.0 ) / ( shadowMapSize * vec2( 4.0, 2.0 ) );\\n\\t\\t\\t#if defined( SHADOWMAP_TYPE_PCF ) || defined( SHADOWMAP_TYPE_PCF_SOFT ) || defined( SHADOWMAP_TYPE_VSM )\\n\\t\\t\\t\\tvec2 offset = vec2( - 1, 1 ) * shadowRadius * texelSize.y;\\n\\t\\t\\t\\tshadow = (\\n\\t\\t\\t\\t\\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xyy, texelSize.y ), dp ) +\\n\\t\\t\\t\\t\\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yyy, texelSize.y ), dp ) +\\n\\t\\t\\t\\t\\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xyx, texelSize.y ), dp ) +\\n\\t\\t\\t\\t\\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yyx, texelSize.y ), dp ) +\\n\\t\\t\\t\\t\\ttexture2DCompare( shadowMap, cubeToUV( bd3D, texelSize.y ), dp ) +\\n\\t\\t\\t\\t\\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xxy, texelSize.y ), dp ) +\\n\\t\\t\\t\\t\\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yxy, texelSize.y ), dp ) +\\n\\t\\t\\t\\t\\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xxx, texelSize.y ), dp ) +\\n\\t\\t\\t\\t\\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yxx, texelSize.y ), dp )\\n\\t\\t\\t\\t) * ( 1.0 / 9.0 );\\n\\t\\t\\t#else\\n\\t\\t\\t\\tshadow = texture2DCompare( shadowMap, cubeToUV( bd3D, texelSize.y ), dp );\\n\\t\\t\\t#endif\\n\\t\\t}\\n\\t\\treturn shadow;\\n\\t}\\n#endif\";\n\nvar shadowmap_pars_vertex = \"#if NUM_SPOT_LIGHT_COORDS > 0\\n\\tuniform mat4 spotLightMatrix[ NUM_SPOT_LIGHT_COORDS ];\\n\\tvarying vec4 vSpotLightCoord[ NUM_SPOT_LIGHT_COORDS ];\\n#endif\\n#ifdef USE_SHADOWMAP\\n\\t#if NUM_DIR_LIGHT_SHADOWS > 0\\n\\t\\tuniform mat4 directionalShadowMatrix[ NUM_DIR_LIGHT_SHADOWS ];\\n\\t\\tvarying vec4 vDirectionalShadowCoord[ NUM_DIR_LIGHT_SHADOWS ];\\n\\t\\tstruct DirectionalLightShadow {\\n\\t\\t\\tfloat shadowBias;\\n\\t\\t\\tfloat shadowNormalBias;\\n\\t\\t\\tfloat shadowRadius;\\n\\t\\t\\tvec2 shadowMapSize;\\n\\t\\t};\\n\\t\\tuniform DirectionalLightShadow directionalLightShadows[ NUM_DIR_LIGHT_SHADOWS ];\\n\\t#endif\\n\\t#if NUM_SPOT_LIGHT_SHADOWS > 0\\n\\t\\tstruct SpotLightShadow {\\n\\t\\t\\tfloat shadowBias;\\n\\t\\t\\tfloat shadowNormalBias;\\n\\t\\t\\tfloat shadowRadius;\\n\\t\\t\\tvec2 shadowMapSize;\\n\\t\\t};\\n\\t\\tuniform SpotLightShadow spotLightShadows[ NUM_SPOT_LIGHT_SHADOWS ];\\n\\t#endif\\n\\t#if NUM_POINT_LIGHT_SHADOWS > 0\\n\\t\\tuniform mat4 pointShadowMatrix[ NUM_POINT_LIGHT_SHADOWS ];\\n\\t\\tvarying vec4 vPointShadowCoord[ NUM_POINT_LIGHT_SHADOWS ];\\n\\t\\tstruct PointLightShadow {\\n\\t\\t\\tfloat shadowBias;\\n\\t\\t\\tfloat shadowNormalBias;\\n\\t\\t\\tfloat shadowRadius;\\n\\t\\t\\tvec2 shadowMapSize;\\n\\t\\t\\tfloat shadowCameraNear;\\n\\t\\t\\tfloat shadowCameraFar;\\n\\t\\t};\\n\\t\\tuniform PointLightShadow pointLightShadows[ NUM_POINT_LIGHT_SHADOWS ];\\n\\t#endif\\n#endif\";\n\nvar shadowmap_vertex = \"#if ( defined( USE_SHADOWMAP ) && ( NUM_DIR_LIGHT_SHADOWS > 0 || NUM_POINT_LIGHT_SHADOWS > 0 ) ) || ( NUM_SPOT_LIGHT_COORDS > 0 )\\n\\tvec3 shadowWorldNormal = inverseTransformDirection( transformedNormal, viewMatrix );\\n\\tvec4 shadowWorldPosition;\\n#endif\\n#if defined( USE_SHADOWMAP )\\n\\t#if NUM_DIR_LIGHT_SHADOWS > 0\\n\\t\\t#pragma unroll_loop_start\\n\\t\\tfor ( int i = 0; i < NUM_DIR_LIGHT_SHADOWS; i ++ ) {\\n\\t\\t\\tshadowWorldPosition = worldPosition + vec4( shadowWorldNormal * directionalLightShadows[ i ].shadowNormalBias, 0 );\\n\\t\\t\\tvDirectionalShadowCoord[ i ] = directionalShadowMatrix[ i ] * shadowWorldPosition;\\n\\t\\t}\\n\\t\\t#pragma unroll_loop_end\\n\\t#endif\\n\\t#if NUM_POINT_LIGHT_SHADOWS > 0\\n\\t\\t#pragma unroll_loop_start\\n\\t\\tfor ( int i = 0; i < NUM_POINT_LIGHT_SHADOWS; i ++ ) {\\n\\t\\t\\tshadowWorldPosition = worldPosition + vec4( shadowWorldNormal * pointLightShadows[ i ].shadowNormalBias, 0 );\\n\\t\\t\\tvPointShadowCoord[ i ] = pointShadowMatrix[ i ] * shadowWorldPosition;\\n\\t\\t}\\n\\t\\t#pragma unroll_loop_end\\n\\t#endif\\n#endif\\n#if NUM_SPOT_LIGHT_COORDS > 0\\n\\t#pragma unroll_loop_start\\n\\tfor ( int i = 0; i < NUM_SPOT_LIGHT_COORDS; i ++ ) {\\n\\t\\tshadowWorldPosition = worldPosition;\\n\\t\\t#if ( defined( USE_SHADOWMAP ) && UNROLLED_LOOP_INDEX < NUM_SPOT_LIGHT_SHADOWS )\\n\\t\\t\\tshadowWorldPosition.xyz += shadowWorldNormal * spotLightShadows[ i ].shadowNormalBias;\\n\\t\\t#endif\\n\\t\\tvSpotLightCoord[ i ] = spotLightMatrix[ i ] * shadowWorldPosition;\\n\\t}\\n\\t#pragma unroll_loop_end\\n#endif\";\n\nvar shadowmask_pars_fragment = \"float getShadowMask() {\\n\\tfloat shadow = 1.0;\\n\\t#ifdef USE_SHADOWMAP\\n\\t#if NUM_DIR_LIGHT_SHADOWS > 0\\n\\tDirectionalLightShadow directionalLight;\\n\\t#pragma unroll_loop_start\\n\\tfor ( int i = 0; i < NUM_DIR_LIGHT_SHADOWS; i ++ ) {\\n\\t\\tdirectionalLight = directionalLightShadows[ i ];\\n\\t\\tshadow *= receiveShadow ? getShadow( directionalShadowMap[ i ], directionalLight.shadowMapSize, directionalLight.shadowBias, directionalLight.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;\\n\\t}\\n\\t#pragma unroll_loop_end\\n\\t#endif\\n\\t#if NUM_SPOT_LIGHT_SHADOWS > 0\\n\\tSpotLightShadow spotLight;\\n\\t#pragma unroll_loop_start\\n\\tfor ( int i = 0; i < NUM_SPOT_LIGHT_SHADOWS; i ++ ) {\\n\\t\\tspotLight = spotLightShadows[ i ];\\n\\t\\tshadow *= receiveShadow ? getShadow( spotShadowMap[ i ], spotLight.shadowMapSize, spotLight.shadowBias, spotLight.shadowRadius, vSpotLightCoord[ i ] ) : 1.0;\\n\\t}\\n\\t#pragma unroll_loop_end\\n\\t#endif\\n\\t#if NUM_POINT_LIGHT_SHADOWS > 0\\n\\tPointLightShadow pointLight;\\n\\t#pragma unroll_loop_start\\n\\tfor ( int i = 0; i < NUM_POINT_LIGHT_SHADOWS; i ++ ) {\\n\\t\\tpointLight = pointLightShadows[ i ];\\n\\t\\tshadow *= receiveShadow ? getPointShadow( pointShadowMap[ i ], pointLight.shadowMapSize, pointLight.shadowBias, pointLight.shadowRadius, vPointShadowCoord[ i ], pointLight.shadowCameraNear, pointLight.shadowCameraFar ) : 1.0;\\n\\t}\\n\\t#pragma unroll_loop_end\\n\\t#endif\\n\\t#endif\\n\\treturn shadow;\\n}\";\n\nvar skinbase_vertex = \"#ifdef USE_SKINNING\\n\\tmat4 boneMatX = getBoneMatrix( skinIndex.x );\\n\\tmat4 boneMatY = getBoneMatrix( skinIndex.y );\\n\\tmat4 boneMatZ = getBoneMatrix( skinIndex.z );\\n\\tmat4 boneMatW = getBoneMatrix( skinIndex.w );\\n#endif\";\n\nvar skinning_pars_vertex = \"#ifdef USE_SKINNING\\n\\tuniform mat4 bindMatrix;\\n\\tuniform mat4 bindMatrixInverse;\\n\\tuniform highp sampler2D boneTexture;\\n\\tmat4 getBoneMatrix( const in float i ) {\\n\\t\\tint size = textureSize( boneTexture, 0 ).x;\\n\\t\\tint j = int( i ) * 4;\\n\\t\\tint x = j % size;\\n\\t\\tint y = j / size;\\n\\t\\tvec4 v1 = texelFetch( boneTexture, ivec2( x, y ), 0 );\\n\\t\\tvec4 v2 = texelFetch( boneTexture, ivec2( x + 1, y ), 0 );\\n\\t\\tvec4 v3 = texelFetch( boneTexture, ivec2( x + 2, y ), 0 );\\n\\t\\tvec4 v4 = texelFetch( boneTexture, ivec2( x + 3, y ), 0 );\\n\\t\\treturn mat4( v1, v2, v3, v4 );\\n\\t}\\n#endif\";\n\nvar skinning_vertex = \"#ifdef USE_SKINNING\\n\\tvec4 skinVertex = bindMatrix * vec4( transformed, 1.0 );\\n\\tvec4 skinned = vec4( 0.0 );\\n\\tskinned += boneMatX * skinVertex * skinWeight.x;\\n\\tskinned += boneMatY * skinVertex * skinWeight.y;\\n\\tskinned += boneMatZ * skinVertex * skinWeight.z;\\n\\tskinned += boneMatW * skinVertex * skinWeight.w;\\n\\ttransformed = ( bindMatrixInverse * skinned ).xyz;\\n#endif\";\n\nvar skinnormal_vertex = \"#ifdef USE_SKINNING\\n\\tmat4 skinMatrix = mat4( 0.0 );\\n\\tskinMatrix += skinWeight.x * boneMatX;\\n\\tskinMatrix += skinWeight.y * boneMatY;\\n\\tskinMatrix += skinWeight.z * boneMatZ;\\n\\tskinMatrix += skinWeight.w * boneMatW;\\n\\tskinMatrix = bindMatrixInverse * skinMatrix * bindMatrix;\\n\\tobjectNormal = vec4( skinMatrix * vec4( objectNormal, 0.0 ) ).xyz;\\n\\t#ifdef USE_TANGENT\\n\\t\\tobjectTangent = vec4( skinMatrix * vec4( objectTangent, 0.0 ) ).xyz;\\n\\t#endif\\n#endif\";\n\nvar specularmap_fragment = \"float specularStrength;\\n#ifdef USE_SPECULARMAP\\n\\tvec4 texelSpecular = texture2D( specularMap, vSpecularMapUv );\\n\\tspecularStrength = texelSpecular.r;\\n#else\\n\\tspecularStrength = 1.0;\\n#endif\";\n\nvar specularmap_pars_fragment = \"#ifdef USE_SPECULARMAP\\n\\tuniform sampler2D specularMap;\\n#endif\";\n\nvar tonemapping_fragment = \"#if defined( TONE_MAPPING )\\n\\tgl_FragColor.rgb = toneMapping( gl_FragColor.rgb );\\n#endif\";\n\nvar tonemapping_pars_fragment = \"#ifndef saturate\\n#define saturate( a ) clamp( a, 0.0, 1.0 )\\n#endif\\nuniform float toneMappingExposure;\\nvec3 LinearToneMapping( vec3 color ) {\\n\\treturn saturate( toneMappingExposure * color );\\n}\\nvec3 ReinhardToneMapping( vec3 color ) {\\n\\tcolor *= toneMappingExposure;\\n\\treturn saturate( color / ( vec3( 1.0 ) + color ) );\\n}\\nvec3 OptimizedCineonToneMapping( vec3 color ) {\\n\\tcolor *= toneMappingExposure;\\n\\tcolor = max( vec3( 0.0 ), color - 0.004 );\\n\\treturn pow( ( color * ( 6.2 * color + 0.5 ) ) / ( color * ( 6.2 * color + 1.7 ) + 0.06 ), vec3( 2.2 ) );\\n}\\nvec3 RRTAndODTFit( vec3 v ) {\\n\\tvec3 a = v * ( v + 0.0245786 ) - 0.000090537;\\n\\tvec3 b = v * ( 0.983729 * v + 0.4329510 ) + 0.238081;\\n\\treturn a / b;\\n}\\nvec3 ACESFilmicToneMapping( vec3 color ) {\\n\\tconst mat3 ACESInputMat = mat3(\\n\\t\\tvec3( 0.59719, 0.07600, 0.02840 ),\\t\\tvec3( 0.35458, 0.90834, 0.13383 ),\\n\\t\\tvec3( 0.04823, 0.01566, 0.83777 )\\n\\t);\\n\\tconst mat3 ACESOutputMat = mat3(\\n\\t\\tvec3( 1.60475, -0.10208, -0.00327 ),\\t\\tvec3( -0.53108, 1.10813, -0.07276 ),\\n\\t\\tvec3( -0.07367, -0.00605, 1.07602 )\\n\\t);\\n\\tcolor *= toneMappingExposure / 0.6;\\n\\tcolor = ACESInputMat * color;\\n\\tcolor = RRTAndODTFit( color );\\n\\tcolor = ACESOutputMat * color;\\n\\treturn saturate( color );\\n}\\nconst mat3 LINEAR_REC2020_TO_LINEAR_SRGB = mat3(\\n\\tvec3( 1.6605, - 0.1246, - 0.0182 ),\\n\\tvec3( - 0.5876, 1.1329, - 0.1006 ),\\n\\tvec3( - 0.0728, - 0.0083, 1.1187 )\\n);\\nconst mat3 LINEAR_SRGB_TO_LINEAR_REC2020 = mat3(\\n\\tvec3( 0.6274, 0.0691, 0.0164 ),\\n\\tvec3( 0.3293, 0.9195, 0.0880 ),\\n\\tvec3( 0.0433, 0.0113, 0.8956 )\\n);\\nvec3 agxDefaultContrastApprox( vec3 x ) {\\n\\tvec3 x2 = x * x;\\n\\tvec3 x4 = x2 * x2;\\n\\treturn + 15.5 * x4 * x2\\n\\t\\t- 40.14 * x4 * x\\n\\t\\t+ 31.96 * x4\\n\\t\\t- 6.868 * x2 * x\\n\\t\\t+ 0.4298 * x2\\n\\t\\t+ 0.1191 * x\\n\\t\\t- 0.00232;\\n}\\nvec3 AgXToneMapping( vec3 color ) {\\n\\tconst mat3 AgXInsetMatrix = mat3(\\n\\t\\tvec3( 0.856627153315983, 0.137318972929847, 0.11189821299995 ),\\n\\t\\tvec3( 0.0951212405381588, 0.761241990602591, 0.0767994186031903 ),\\n\\t\\tvec3( 0.0482516061458583, 0.101439036467562, 0.811302368396859 )\\n\\t);\\n\\tconst mat3 AgXOutsetMatrix = mat3(\\n\\t\\tvec3( 1.1271005818144368, - 0.1413297634984383, - 0.14132976349843826 ),\\n\\t\\tvec3( - 0.11060664309660323, 1.157823702216272, - 0.11060664309660294 ),\\n\\t\\tvec3( - 0.016493938717834573, - 0.016493938717834257, 1.2519364065950405 )\\n\\t);\\n\\tconst float AgxMinEv = - 12.47393;\\tconst float AgxMaxEv = 4.026069;\\n\\tcolor *= toneMappingExposure;\\n\\tcolor = LINEAR_SRGB_TO_LINEAR_REC2020 * color;\\n\\tcolor = AgXInsetMatrix * color;\\n\\tcolor = max( color, 1e-10 );\\tcolor = log2( color );\\n\\tcolor = ( color - AgxMinEv ) / ( AgxMaxEv - AgxMinEv );\\n\\tcolor = clamp( color, 0.0, 1.0 );\\n\\tcolor = agxDefaultContrastApprox( color );\\n\\tcolor = AgXOutsetMatrix * color;\\n\\tcolor = pow( max( vec3( 0.0 ), color ), vec3( 2.2 ) );\\n\\tcolor = LINEAR_REC2020_TO_LINEAR_SRGB * color;\\n\\tcolor = clamp( color, 0.0, 1.0 );\\n\\treturn color;\\n}\\nvec3 NeutralToneMapping( vec3 color ) {\\n\\tconst float StartCompression = 0.8 - 0.04;\\n\\tconst float Desaturation = 0.15;\\n\\tcolor *= toneMappingExposure;\\n\\tfloat x = min( color.r, min( color.g, color.b ) );\\n\\tfloat offset = x < 0.08 ? x - 6.25 * x * x : 0.04;\\n\\tcolor -= offset;\\n\\tfloat peak = max( color.r, max( color.g, color.b ) );\\n\\tif ( peak < StartCompression ) return color;\\n\\tfloat d = 1. - StartCompression;\\n\\tfloat newPeak = 1. - d * d / ( peak + d - StartCompression );\\n\\tcolor *= newPeak / peak;\\n\\tfloat g = 1. - 1. / ( Desaturation * ( peak - newPeak ) + 1. );\\n\\treturn mix( color, vec3( newPeak ), g );\\n}\\nvec3 CustomToneMapping( vec3 color ) { return color; }\";\n\nvar transmission_fragment = \"#ifdef USE_TRANSMISSION\\n\\tmaterial.transmission = transmission;\\n\\tmaterial.transmissionAlpha = 1.0;\\n\\tmaterial.thickness = thickness;\\n\\tmaterial.attenuationDistance = attenuationDistance;\\n\\tmaterial.attenuationColor = attenuationColor;\\n\\t#ifdef USE_TRANSMISSIONMAP\\n\\t\\tmaterial.transmission *= texture2D( transmissionMap, vTransmissionMapUv ).r;\\n\\t#endif\\n\\t#ifdef USE_THICKNESSMAP\\n\\t\\tmaterial.thickness *= texture2D( thicknessMap, vThicknessMapUv ).g;\\n\\t#endif\\n\\tvec3 pos = vWorldPosition;\\n\\tvec3 v = normalize( cameraPosition - pos );\\n\\tvec3 n = inverseTransformDirection( normal, viewMatrix );\\n\\tvec4 transmitted = getIBLVolumeRefraction(\\n\\t\\tn, v, material.roughness, material.diffuseColor, material.specularColor, material.specularF90,\\n\\t\\tpos, modelMatrix, viewMatrix, projectionMatrix, material.dispersion, material.ior, material.thickness,\\n\\t\\tmaterial.attenuationColor, material.attenuationDistance );\\n\\tmaterial.transmissionAlpha = mix( material.transmissionAlpha, transmitted.a, material.transmission );\\n\\ttotalDiffuse = mix( totalDiffuse, transmitted.rgb, material.transmission );\\n#endif\";\n\nvar transmission_pars_fragment = \"#ifdef USE_TRANSMISSION\\n\\tuniform float transmission;\\n\\tuniform float thickness;\\n\\tuniform float attenuationDistance;\\n\\tuniform vec3 attenuationColor;\\n\\t#ifdef USE_TRANSMISSIONMAP\\n\\t\\tuniform sampler2D transmissionMap;\\n\\t#endif\\n\\t#ifdef USE_THICKNESSMAP\\n\\t\\tuniform sampler2D thicknessMap;\\n\\t#endif\\n\\tuniform vec2 transmissionSamplerSize;\\n\\tuniform sampler2D transmissionSamplerMap;\\n\\tuniform mat4 modelMatrix;\\n\\tuniform mat4 projectionMatrix;\\n\\tvarying vec3 vWorldPosition;\\n\\tfloat w0( float a ) {\\n\\t\\treturn ( 1.0 / 6.0 ) * ( a * ( a * ( - a + 3.0 ) - 3.0 ) + 1.0 );\\n\\t}\\n\\tfloat w1( float a ) {\\n\\t\\treturn ( 1.0 / 6.0 ) * ( a * a * ( 3.0 * a - 6.0 ) + 4.0 );\\n\\t}\\n\\tfloat w2( float a ){\\n\\t\\treturn ( 1.0 / 6.0 ) * ( a * ( a * ( - 3.0 * a + 3.0 ) + 3.0 ) + 1.0 );\\n\\t}\\n\\tfloat w3( float a ) {\\n\\t\\treturn ( 1.0 / 6.0 ) * ( a * a * a );\\n\\t}\\n\\tfloat g0( float a ) {\\n\\t\\treturn w0( a ) + w1( a );\\n\\t}\\n\\tfloat g1( float a ) {\\n\\t\\treturn w2( a ) + w3( a );\\n\\t}\\n\\tfloat h0( float a ) {\\n\\t\\treturn - 1.0 + w1( a ) / ( w0( a ) + w1( a ) );\\n\\t}\\n\\tfloat h1( float a ) {\\n\\t\\treturn 1.0 + w3( a ) / ( w2( a ) + w3( a ) );\\n\\t}\\n\\tvec4 bicubic( sampler2D tex, vec2 uv, vec4 texelSize, float lod ) {\\n\\t\\tuv = uv * texelSize.zw + 0.5;\\n\\t\\tvec2 iuv = floor( uv );\\n\\t\\tvec2 fuv = fract( uv );\\n\\t\\tfloat g0x = g0( fuv.x );\\n\\t\\tfloat g1x = g1( fuv.x );\\n\\t\\tfloat h0x = h0( fuv.x );\\n\\t\\tfloat h1x = h1( fuv.x );\\n\\t\\tfloat h0y = h0( fuv.y );\\n\\t\\tfloat h1y = h1( fuv.y );\\n\\t\\tvec2 p0 = ( vec2( iuv.x + h0x, iuv.y + h0y ) - 0.5 ) * texelSize.xy;\\n\\t\\tvec2 p1 = ( vec2( iuv.x + h1x, iuv.y + h0y ) - 0.5 ) * texelSize.xy;\\n\\t\\tvec2 p2 = ( vec2( iuv.x + h0x, iuv.y + h1y ) - 0.5 ) * texelSize.xy;\\n\\t\\tvec2 p3 = ( vec2( iuv.x + h1x, iuv.y + h1y ) - 0.5 ) * texelSize.xy;\\n\\t\\treturn g0( fuv.y ) * ( g0x * textureLod( tex, p0, lod ) + g1x * textureLod( tex, p1, lod ) ) +\\n\\t\\t\\tg1( fuv.y ) * ( g0x * textureLod( tex, p2, lod ) + g1x * textureLod( tex, p3, lod ) );\\n\\t}\\n\\tvec4 textureBicubic( sampler2D sampler, vec2 uv, float lod ) {\\n\\t\\tvec2 fLodSize = vec2( textureSize( sampler, int( lod ) ) );\\n\\t\\tvec2 cLodSize = vec2( textureSize( sampler, int( lod + 1.0 ) ) );\\n\\t\\tvec2 fLodSizeInv = 1.0 / fLodSize;\\n\\t\\tvec2 cLodSizeInv = 1.0 / cLodSize;\\n\\t\\tvec4 fSample = bicubic( sampler, uv, vec4( fLodSizeInv, fLodSize ), floor( lod ) );\\n\\t\\tvec4 cSample = bicubic( sampler, uv, vec4( cLodSizeInv, cLodSize ), ceil( lod ) );\\n\\t\\treturn mix( fSample, cSample, fract( lod ) );\\n\\t}\\n\\tvec3 getVolumeTransmissionRay( const in vec3 n, const in vec3 v, const in float thickness, const in float ior, const in mat4 modelMatrix ) {\\n\\t\\tvec3 refractionVector = refract( - v, normalize( n ), 1.0 / ior );\\n\\t\\tvec3 modelScale;\\n\\t\\tmodelScale.x = length( vec3( modelMatrix[ 0 ].xyz ) );\\n\\t\\tmodelScale.y = length( vec3( modelMatrix[ 1 ].xyz ) );\\n\\t\\tmodelScale.z = length( vec3( modelMatrix[ 2 ].xyz ) );\\n\\t\\treturn normalize( refractionVector ) * thickness * modelScale;\\n\\t}\\n\\tfloat applyIorToRoughness( const in float roughness, const in float ior ) {\\n\\t\\treturn roughness * clamp( ior * 2.0 - 2.0, 0.0, 1.0 );\\n\\t}\\n\\tvec4 getTransmissionSample( const in vec2 fragCoord, const in float roughness, const in float ior ) {\\n\\t\\tfloat lod = log2( transmissionSamplerSize.x ) * applyIorToRoughness( roughness, ior );\\n\\t\\treturn textureBicubic( transmissionSamplerMap, fragCoord.xy, lod );\\n\\t}\\n\\tvec3 volumeAttenuation( const in float transmissionDistance, const in vec3 attenuationColor, const in float attenuationDistance ) {\\n\\t\\tif ( isinf( attenuationDistance ) ) {\\n\\t\\t\\treturn vec3( 1.0 );\\n\\t\\t} else {\\n\\t\\t\\tvec3 attenuationCoefficient = -log( attenuationColor ) / attenuationDistance;\\n\\t\\t\\tvec3 transmittance = exp( - attenuationCoefficient * transmissionDistance );\\t\\t\\treturn transmittance;\\n\\t\\t}\\n\\t}\\n\\tvec4 getIBLVolumeRefraction( const in vec3 n, const in vec3 v, const in float roughness, const in vec3 diffuseColor,\\n\\t\\tconst in vec3 specularColor, const in float specularF90, const in vec3 position, const in mat4 modelMatrix,\\n\\t\\tconst in mat4 viewMatrix, const in mat4 projMatrix, const in float dispersion, const in float ior, const in float thickness,\\n\\t\\tconst in vec3 attenuationColor, const in float attenuationDistance ) {\\n\\t\\tvec4 transmittedLight;\\n\\t\\tvec3 transmittance;\\n\\t\\t#ifdef USE_DISPERSION\\n\\t\\t\\tfloat halfSpread = ( ior - 1.0 ) * 0.025 * dispersion;\\n\\t\\t\\tvec3 iors = vec3( ior - halfSpread, ior, ior + halfSpread );\\n\\t\\t\\tfor ( int i = 0; i < 3; i ++ ) {\\n\\t\\t\\t\\tvec3 transmissionRay = getVolumeTransmissionRay( n, v, thickness, iors[ i ], modelMatrix );\\n\\t\\t\\t\\tvec3 refractedRayExit = position + transmissionRay;\\n\\t\\t\\n\\t\\t\\t\\tvec4 ndcPos = projMatrix * viewMatrix * vec4( refractedRayExit, 1.0 );\\n\\t\\t\\t\\tvec2 refractionCoords = ndcPos.xy / ndcPos.w;\\n\\t\\t\\t\\trefractionCoords += 1.0;\\n\\t\\t\\t\\trefractionCoords /= 2.0;\\n\\t\\t\\n\\t\\t\\t\\tvec4 transmissionSample = getTransmissionSample( refractionCoords, roughness, iors[ i ] );\\n\\t\\t\\t\\ttransmittedLight[ i ] = transmissionSample[ i ];\\n\\t\\t\\t\\ttransmittedLight.a += transmissionSample.a;\\n\\t\\t\\t\\ttransmittance[ i ] = diffuseColor[ i ] * volumeAttenuation( length( transmissionRay ), attenuationColor, attenuationDistance )[ i ];\\n\\t\\t\\t}\\n\\t\\t\\ttransmittedLight.a /= 3.0;\\n\\t\\t\\n\\t\\t#else\\n\\t\\t\\n\\t\\t\\tvec3 transmissionRay = getVolumeTransmissionRay( n, v, thickness, ior, modelMatrix );\\n\\t\\t\\tvec3 refractedRayExit = position + transmissionRay;\\n\\t\\t\\tvec4 ndcPos = projMatrix * viewMatrix * vec4( refractedRayExit, 1.0 );\\n\\t\\t\\tvec2 refractionCoords = ndcPos.xy / ndcPos.w;\\n\\t\\t\\trefractionCoords += 1.0;\\n\\t\\t\\trefractionCoords /= 2.0;\\n\\t\\t\\ttransmittedLight = getTransmissionSample( refractionCoords, roughness, ior );\\n\\t\\t\\ttransmittance = diffuseColor * volumeAttenuation( length( transmissionRay ), attenuationColor, attenuationDistance );\\n\\t\\t\\n\\t\\t#endif\\n\\t\\tvec3 attenuatedColor = transmittance * transmittedLight.rgb;\\n\\t\\tvec3 F = EnvironmentBRDF( n, v, specularColor, specularF90, roughness );\\n\\t\\tfloat transmittanceFactor = ( transmittance.r + transmittance.g + transmittance.b ) / 3.0;\\n\\t\\treturn vec4( ( 1.0 - F ) * attenuatedColor, 1.0 - ( 1.0 - transmittedLight.a ) * transmittanceFactor );\\n\\t}\\n#endif\";\n\nvar uv_pars_fragment = \"#if defined( USE_UV ) || defined( USE_ANISOTROPY )\\n\\tvarying vec2 vUv;\\n#endif\\n#ifdef USE_MAP\\n\\tvarying vec2 vMapUv;\\n#endif\\n#ifdef USE_ALPHAMAP\\n\\tvarying vec2 vAlphaMapUv;\\n#endif\\n#ifdef USE_LIGHTMAP\\n\\tvarying vec2 vLightMapUv;\\n#endif\\n#ifdef USE_AOMAP\\n\\tvarying vec2 vAoMapUv;\\n#endif\\n#ifdef USE_BUMPMAP\\n\\tvarying vec2 vBumpMapUv;\\n#endif\\n#ifdef USE_NORMALMAP\\n\\tvarying vec2 vNormalMapUv;\\n#endif\\n#ifdef USE_EMISSIVEMAP\\n\\tvarying vec2 vEmissiveMapUv;\\n#endif\\n#ifdef USE_METALNESSMAP\\n\\tvarying vec2 vMetalnessMapUv;\\n#endif\\n#ifdef USE_ROUGHNESSMAP\\n\\tvarying vec2 vRoughnessMapUv;\\n#endif\\n#ifdef USE_ANISOTROPYMAP\\n\\tvarying vec2 vAnisotropyMapUv;\\n#endif\\n#ifdef USE_CLEARCOATMAP\\n\\tvarying vec2 vClearcoatMapUv;\\n#endif\\n#ifdef USE_CLEARCOAT_NORMALMAP\\n\\tvarying vec2 vClearcoatNormalMapUv;\\n#endif\\n#ifdef USE_CLEARCOAT_ROUGHNESSMAP\\n\\tvarying vec2 vClearcoatRoughnessMapUv;\\n#endif\\n#ifdef USE_IRIDESCENCEMAP\\n\\tvarying vec2 vIridescenceMapUv;\\n#endif\\n#ifdef USE_IRIDESCENCE_THICKNESSMAP\\n\\tvarying vec2 vIridescenceThicknessMapUv;\\n#endif\\n#ifdef USE_SHEEN_COLORMAP\\n\\tvarying vec2 vSheenColorMapUv;\\n#endif\\n#ifdef USE_SHEEN_ROUGHNESSMAP\\n\\tvarying vec2 vSheenRoughnessMapUv;\\n#endif\\n#ifdef USE_SPECULARMAP\\n\\tvarying vec2 vSpecularMapUv;\\n#endif\\n#ifdef USE_SPECULAR_COLORMAP\\n\\tvarying vec2 vSpecularColorMapUv;\\n#endif\\n#ifdef USE_SPECULAR_INTENSITYMAP\\n\\tvarying vec2 vSpecularIntensityMapUv;\\n#endif\\n#ifdef USE_TRANSMISSIONMAP\\n\\tuniform mat3 transmissionMapTransform;\\n\\tvarying vec2 vTransmissionMapUv;\\n#endif\\n#ifdef USE_THICKNESSMAP\\n\\tuniform mat3 thicknessMapTransform;\\n\\tvarying vec2 vThicknessMapUv;\\n#endif\";\n\nvar uv_pars_vertex = \"#if defined( USE_UV ) || defined( USE_ANISOTROPY )\\n\\tvarying vec2 vUv;\\n#endif\\n#ifdef USE_MAP\\n\\tuniform mat3 mapTransform;\\n\\tvarying vec2 vMapUv;\\n#endif\\n#ifdef USE_ALPHAMAP\\n\\tuniform mat3 alphaMapTransform;\\n\\tvarying vec2 vAlphaMapUv;\\n#endif\\n#ifdef USE_LIGHTMAP\\n\\tuniform mat3 lightMapTransform;\\n\\tvarying vec2 vLightMapUv;\\n#endif\\n#ifdef USE_AOMAP\\n\\tuniform mat3 aoMapTransform;\\n\\tvarying vec2 vAoMapUv;\\n#endif\\n#ifdef USE_BUMPMAP\\n\\tuniform mat3 bumpMapTransform;\\n\\tvarying vec2 vBumpMapUv;\\n#endif\\n#ifdef USE_NORMALMAP\\n\\tuniform mat3 normalMapTransform;\\n\\tvarying vec2 vNormalMapUv;\\n#endif\\n#ifdef USE_DISPLACEMENTMAP\\n\\tuniform mat3 displacementMapTransform;\\n\\tvarying vec2 vDisplacementMapUv;\\n#endif\\n#ifdef USE_EMISSIVEMAP\\n\\tuniform mat3 emissiveMapTransform;\\n\\tvarying vec2 vEmissiveMapUv;\\n#endif\\n#ifdef USE_METALNESSMAP\\n\\tuniform mat3 metalnessMapTransform;\\n\\tvarying vec2 vMetalnessMapUv;\\n#endif\\n#ifdef USE_ROUGHNESSMAP\\n\\tuniform mat3 roughnessMapTransform;\\n\\tvarying vec2 vRoughnessMapUv;\\n#endif\\n#ifdef USE_ANISOTROPYMAP\\n\\tuniform mat3 anisotropyMapTransform;\\n\\tvarying vec2 vAnisotropyMapUv;\\n#endif\\n#ifdef USE_CLEARCOATMAP\\n\\tuniform mat3 clearcoatMapTransform;\\n\\tvarying vec2 vClearcoatMapUv;\\n#endif\\n#ifdef USE_CLEARCOAT_NORMALMAP\\n\\tuniform mat3 clearcoatNormalMapTransform;\\n\\tvarying vec2 vClearcoatNormalMapUv;\\n#endif\\n#ifdef USE_CLEARCOAT_ROUGHNESSMAP\\n\\tuniform mat3 clearcoatRoughnessMapTransform;\\n\\tvarying vec2 vClearcoatRoughnessMapUv;\\n#endif\\n#ifdef USE_SHEEN_COLORMAP\\n\\tuniform mat3 sheenColorMapTransform;\\n\\tvarying vec2 vSheenColorMapUv;\\n#endif\\n#ifdef USE_SHEEN_ROUGHNESSMAP\\n\\tuniform mat3 sheenRoughnessMapTransform;\\n\\tvarying vec2 vSheenRoughnessMapUv;\\n#endif\\n#ifdef USE_IRIDESCENCEMAP\\n\\tuniform mat3 iridescenceMapTransform;\\n\\tvarying vec2 vIridescenceMapUv;\\n#endif\\n#ifdef USE_IRIDESCENCE_THICKNESSMAP\\n\\tuniform mat3 iridescenceThicknessMapTransform;\\n\\tvarying vec2 vIridescenceThicknessMapUv;\\n#endif\\n#ifdef USE_SPECULARMAP\\n\\tuniform mat3 specularMapTransform;\\n\\tvarying vec2 vSpecularMapUv;\\n#endif\\n#ifdef USE_SPECULAR_COLORMAP\\n\\tuniform mat3 specularColorMapTransform;\\n\\tvarying vec2 vSpecularColorMapUv;\\n#endif\\n#ifdef USE_SPECULAR_INTENSITYMAP\\n\\tuniform mat3 specularIntensityMapTransform;\\n\\tvarying vec2 vSpecularIntensityMapUv;\\n#endif\\n#ifdef USE_TRANSMISSIONMAP\\n\\tuniform mat3 transmissionMapTransform;\\n\\tvarying vec2 vTransmissionMapUv;\\n#endif\\n#ifdef USE_THICKNESSMAP\\n\\tuniform mat3 thicknessMapTransform;\\n\\tvarying vec2 vThicknessMapUv;\\n#endif\";\n\nvar uv_vertex = \"#if defined( USE_UV ) || defined( USE_ANISOTROPY )\\n\\tvUv = vec3( uv, 1 ).xy;\\n#endif\\n#ifdef USE_MAP\\n\\tvMapUv = ( mapTransform * vec3( MAP_UV, 1 ) ).xy;\\n#endif\\n#ifdef USE_ALPHAMAP\\n\\tvAlphaMapUv = ( alphaMapTransform * vec3( ALPHAMAP_UV, 1 ) ).xy;\\n#endif\\n#ifdef USE_LIGHTMAP\\n\\tvLightMapUv = ( lightMapTransform * vec3( LIGHTMAP_UV, 1 ) ).xy;\\n#endif\\n#ifdef USE_AOMAP\\n\\tvAoMapUv = ( aoMapTransform * vec3( AOMAP_UV, 1 ) ).xy;\\n#endif\\n#ifdef USE_BUMPMAP\\n\\tvBumpMapUv = ( bumpMapTransform * vec3( BUMPMAP_UV, 1 ) ).xy;\\n#endif\\n#ifdef USE_NORMALMAP\\n\\tvNormalMapUv = ( normalMapTransform * vec3( NORMALMAP_UV, 1 ) ).xy;\\n#endif\\n#ifdef USE_DISPLACEMENTMAP\\n\\tvDisplacementMapUv = ( displacementMapTransform * vec3( DISPLACEMENTMAP_UV, 1 ) ).xy;\\n#endif\\n#ifdef USE_EMISSIVEMAP\\n\\tvEmissiveMapUv = ( emissiveMapTransform * vec3( EMISSIVEMAP_UV, 1 ) ).xy;\\n#endif\\n#ifdef USE_METALNESSMAP\\n\\tvMetalnessMapUv = ( metalnessMapTransform * vec3( METALNESSMAP_UV, 1 ) ).xy;\\n#endif\\n#ifdef USE_ROUGHNESSMAP\\n\\tvRoughnessMapUv = ( roughnessMapTransform * vec3( ROUGHNESSMAP_UV, 1 ) ).xy;\\n#endif\\n#ifdef USE_ANISOTROPYMAP\\n\\tvAnisotropyMapUv = ( anisotropyMapTransform * vec3( ANISOTROPYMAP_UV, 1 ) ).xy;\\n#endif\\n#ifdef USE_CLEARCOATMAP\\n\\tvClearcoatMapUv = ( clearcoatMapTransform * vec3( CLEARCOATMAP_UV, 1 ) ).xy;\\n#endif\\n#ifdef USE_CLEARCOAT_NORMALMAP\\n\\tvClearcoatNormalMapUv = ( clearcoatNormalMapTransform * vec3( CLEARCOAT_NORMALMAP_UV, 1 ) ).xy;\\n#endif\\n#ifdef USE_CLEARCOAT_ROUGHNESSMAP\\n\\tvClearcoatRoughnessMapUv = ( clearcoatRoughnessMapTransform * vec3( CLEARCOAT_ROUGHNESSMAP_UV, 1 ) ).xy;\\n#endif\\n#ifdef USE_IRIDESCENCEMAP\\n\\tvIridescenceMapUv = ( iridescenceMapTransform * vec3( IRIDESCENCEMAP_UV, 1 ) ).xy;\\n#endif\\n#ifdef USE_IRIDESCENCE_THICKNESSMAP\\n\\tvIridescenceThicknessMapUv = ( iridescenceThicknessMapTransform * vec3( IRIDESCENCE_THICKNESSMAP_UV, 1 ) ).xy;\\n#endif\\n#ifdef USE_SHEEN_COLORMAP\\n\\tvSheenColorMapUv = ( sheenColorMapTransform * vec3( SHEEN_COLORMAP_UV, 1 ) ).xy;\\n#endif\\n#ifdef USE_SHEEN_ROUGHNESSMAP\\n\\tvSheenRoughnessMapUv = ( sheenRoughnessMapTransform * vec3( SHEEN_ROUGHNESSMAP_UV, 1 ) ).xy;\\n#endif\\n#ifdef USE_SPECULARMAP\\n\\tvSpecularMapUv = ( specularMapTransform * vec3( SPECULARMAP_UV, 1 ) ).xy;\\n#endif\\n#ifdef USE_SPECULAR_COLORMAP\\n\\tvSpecularColorMapUv = ( specularColorMapTransform * vec3( SPECULAR_COLORMAP_UV, 1 ) ).xy;\\n#endif\\n#ifdef USE_SPECULAR_INTENSITYMAP\\n\\tvSpecularIntensityMapUv = ( specularIntensityMapTransform * vec3( SPECULAR_INTENSITYMAP_UV, 1 ) ).xy;\\n#endif\\n#ifdef USE_TRANSMISSIONMAP\\n\\tvTransmissionMapUv = ( transmissionMapTransform * vec3( TRANSMISSIONMAP_UV, 1 ) ).xy;\\n#endif\\n#ifdef USE_THICKNESSMAP\\n\\tvThicknessMapUv = ( thicknessMapTransform * vec3( THICKNESSMAP_UV, 1 ) ).xy;\\n#endif\";\n\nvar worldpos_vertex = \"#if defined( USE_ENVMAP ) || defined( DISTANCE ) || defined ( USE_SHADOWMAP ) || defined ( USE_TRANSMISSION ) || NUM_SPOT_LIGHT_COORDS > 0\\n\\tvec4 worldPosition = vec4( transformed, 1.0 );\\n\\t#ifdef USE_BATCHING\\n\\t\\tworldPosition = batchingMatrix * worldPosition;\\n\\t#endif\\n\\t#ifdef USE_INSTANCING\\n\\t\\tworldPosition = instanceMatrix * worldPosition;\\n\\t#endif\\n\\tworldPosition = modelMatrix * worldPosition;\\n#endif\";\n\nconst vertex$h = \"varying vec2 vUv;\\nuniform mat3 uvTransform;\\nvoid main() {\\n\\tvUv = ( uvTransform * vec3( uv, 1 ) ).xy;\\n\\tgl_Position = vec4( position.xy, 1.0, 1.0 );\\n}\";\n\nconst fragment$h = \"uniform sampler2D t2D;\\nuniform float backgroundIntensity;\\nvarying vec2 vUv;\\nvoid main() {\\n\\tvec4 texColor = texture2D( t2D, vUv );\\n\\t#ifdef DECODE_VIDEO_TEXTURE\\n\\t\\ttexColor = vec4( mix( pow( texColor.rgb * 0.9478672986 + vec3( 0.0521327014 ), vec3( 2.4 ) ), texColor.rgb * 0.0773993808, vec3( lessThanEqual( texColor.rgb, vec3( 0.04045 ) ) ) ), texColor.w );\\n\\t#endif\\n\\ttexColor.rgb *= backgroundIntensity;\\n\\tgl_FragColor = texColor;\\n\\t#include \\n\\t#include \\n}\";\n\nconst vertex$g = \"varying vec3 vWorldDirection;\\n#include \\nvoid main() {\\n\\tvWorldDirection = transformDirection( position, modelMatrix );\\n\\t#include \\n\\t#include \\n\\tgl_Position.z = gl_Position.w;\\n}\";\n\nconst fragment$g = \"#ifdef ENVMAP_TYPE_CUBE\\n\\tuniform samplerCube envMap;\\n#elif defined( ENVMAP_TYPE_CUBE_UV )\\n\\tuniform sampler2D envMap;\\n#endif\\nuniform float flipEnvMap;\\nuniform float backgroundBlurriness;\\nuniform float backgroundIntensity;\\nuniform mat3 backgroundRotation;\\nvarying vec3 vWorldDirection;\\n#include \\nvoid main() {\\n\\t#ifdef ENVMAP_TYPE_CUBE\\n\\t\\tvec4 texColor = textureCube( envMap, backgroundRotation * vec3( flipEnvMap * vWorldDirection.x, vWorldDirection.yz ) );\\n\\t#elif defined( ENVMAP_TYPE_CUBE_UV )\\n\\t\\tvec4 texColor = textureCubeUV( envMap, backgroundRotation * vWorldDirection, backgroundBlurriness );\\n\\t#else\\n\\t\\tvec4 texColor = vec4( 0.0, 0.0, 0.0, 1.0 );\\n\\t#endif\\n\\ttexColor.rgb *= backgroundIntensity;\\n\\tgl_FragColor = texColor;\\n\\t#include \\n\\t#include \\n}\";\n\nconst vertex$f = \"varying vec3 vWorldDirection;\\n#include \\nvoid main() {\\n\\tvWorldDirection = transformDirection( position, modelMatrix );\\n\\t#include \\n\\t#include \\n\\tgl_Position.z = gl_Position.w;\\n}\";\n\nconst fragment$f = \"uniform samplerCube tCube;\\nuniform float tFlip;\\nuniform float opacity;\\nvarying vec3 vWorldDirection;\\nvoid main() {\\n\\tvec4 texColor = textureCube( tCube, vec3( tFlip * vWorldDirection.x, vWorldDirection.yz ) );\\n\\tgl_FragColor = texColor;\\n\\tgl_FragColor.a *= opacity;\\n\\t#include \\n\\t#include \\n}\";\n\nconst vertex$e = \"#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\nvarying vec2 vHighPrecisionZW;\\nvoid main() {\\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#ifdef USE_DISPLACEMENTMAP\\n\\t\\t#include \\n\\t\\t#include \\n\\t\\t#include \\n\\t#endif\\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\tvHighPrecisionZW = gl_Position.zw;\\n}\";\n\nconst fragment$e = \"#if DEPTH_PACKING == 3200\\n\\tuniform float opacity;\\n#endif\\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\nvarying vec2 vHighPrecisionZW;\\nvoid main() {\\n\\tvec4 diffuseColor = vec4( 1.0 );\\n\\t#include \\n\\t#if DEPTH_PACKING == 3200\\n\\t\\tdiffuseColor.a = opacity;\\n\\t#endif\\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\tfloat fragCoordZ = 0.5 * vHighPrecisionZW[0] / vHighPrecisionZW[1] + 0.5;\\n\\t#if DEPTH_PACKING == 3200\\n\\t\\tgl_FragColor = vec4( vec3( 1.0 - fragCoordZ ), opacity );\\n\\t#elif DEPTH_PACKING == 3201\\n\\t\\tgl_FragColor = packDepthToRGBA( fragCoordZ );\\n\\t#endif\\n}\";\n\nconst vertex$d = \"#define DISTANCE\\nvarying vec3 vWorldPosition;\\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\nvoid main() {\\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#ifdef USE_DISPLACEMENTMAP\\n\\t\\t#include \\n\\t\\t#include \\n\\t\\t#include \\n\\t#endif\\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\tvWorldPosition = worldPosition.xyz;\\n}\";\n\nconst fragment$d = \"#define DISTANCE\\nuniform vec3 referencePosition;\\nuniform float nearDistance;\\nuniform float farDistance;\\nvarying vec3 vWorldPosition;\\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\nvoid main () {\\n\\tvec4 diffuseColor = vec4( 1.0 );\\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\tfloat dist = length( vWorldPosition - referencePosition );\\n\\tdist = ( dist - nearDistance ) / ( farDistance - nearDistance );\\n\\tdist = saturate( dist );\\n\\tgl_FragColor = packDepthToRGBA( dist );\\n}\";\n\nconst vertex$c = \"varying vec3 vWorldDirection;\\n#include \\nvoid main() {\\n\\tvWorldDirection = transformDirection( position, modelMatrix );\\n\\t#include \\n\\t#include \\n}\";\n\nconst fragment$c = \"uniform sampler2D tEquirect;\\nvarying vec3 vWorldDirection;\\n#include \\nvoid main() {\\n\\tvec3 direction = normalize( vWorldDirection );\\n\\tvec2 sampleUV = equirectUv( direction );\\n\\tgl_FragColor = texture2D( tEquirect, sampleUV );\\n\\t#include \\n\\t#include \\n}\";\n\nconst vertex$b = \"uniform float scale;\\nattribute float lineDistance;\\nvarying float vLineDistance;\\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\nvoid main() {\\n\\tvLineDistance = scale * lineDistance;\\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n}\";\n\nconst fragment$b = \"uniform vec3 diffuse;\\nuniform float opacity;\\nuniform float dashSize;\\nuniform float totalSize;\\nvarying float vLineDistance;\\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\nvoid main() {\\n\\tvec4 diffuseColor = vec4( diffuse, opacity );\\n\\t#include \\n\\tif ( mod( vLineDistance, totalSize ) > dashSize ) {\\n\\t\\tdiscard;\\n\\t}\\n\\tvec3 outgoingLight = vec3( 0.0 );\\n\\t#include \\n\\t#include \\n\\t#include \\n\\toutgoingLight = diffuseColor.rgb;\\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n}\";\n\nconst vertex$a = \"#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\nvoid main() {\\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#if defined ( USE_ENVMAP ) || defined ( USE_SKINNING )\\n\\t\\t#include \\n\\t\\t#include \\n\\t\\t#include \\n\\t\\t#include \\n\\t\\t#include \\n\\t#endif\\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n}\";\n\nconst fragment$a = \"uniform vec3 diffuse;\\nuniform float opacity;\\n#ifndef FLAT_SHADED\\n\\tvarying vec3 vNormal;\\n#endif\\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\nvoid main() {\\n\\tvec4 diffuseColor = vec4( diffuse, opacity );\\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\\n\\t#ifdef USE_LIGHTMAP\\n\\t\\tvec4 lightMapTexel = texture2D( lightMap, vLightMapUv );\\n\\t\\treflectedLight.indirectDiffuse += lightMapTexel.rgb * lightMapIntensity * RECIPROCAL_PI;\\n\\t#else\\n\\t\\treflectedLight.indirectDiffuse += vec3( 1.0 );\\n\\t#endif\\n\\t#include \\n\\treflectedLight.indirectDiffuse *= diffuseColor.rgb;\\n\\tvec3 outgoingLight = reflectedLight.indirectDiffuse;\\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n}\";\n\nconst vertex$9 = \"#define LAMBERT\\nvarying vec3 vViewPosition;\\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\nvoid main() {\\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\tvViewPosition = - mvPosition.xyz;\\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n}\";\n\nconst fragment$9 = \"#define LAMBERT\\nuniform vec3 diffuse;\\nuniform vec3 emissive;\\nuniform float opacity;\\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\nvoid main() {\\n\\tvec4 diffuseColor = vec4( diffuse, opacity );\\n\\t#include \\n\\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\\n\\tvec3 totalEmissiveRadiance = emissive;\\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + totalEmissiveRadiance;\\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n}\";\n\nconst vertex$8 = \"#define MATCAP\\nvarying vec3 vViewPosition;\\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\nvoid main() {\\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\tvViewPosition = - mvPosition.xyz;\\n}\";\n\nconst fragment$8 = \"#define MATCAP\\nuniform vec3 diffuse;\\nuniform float opacity;\\nuniform sampler2D matcap;\\nvarying vec3 vViewPosition;\\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\nvoid main() {\\n\\tvec4 diffuseColor = vec4( diffuse, opacity );\\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\tvec3 viewDir = normalize( vViewPosition );\\n\\tvec3 x = normalize( vec3( viewDir.z, 0.0, - viewDir.x ) );\\n\\tvec3 y = cross( viewDir, x );\\n\\tvec2 uv = vec2( dot( x, normal ), dot( y, normal ) ) * 0.495 + 0.5;\\n\\t#ifdef USE_MATCAP\\n\\t\\tvec4 matcapColor = texture2D( matcap, uv );\\n\\t#else\\n\\t\\tvec4 matcapColor = vec4( vec3( mix( 0.2, 0.8, uv.y ) ), 1.0 );\\n\\t#endif\\n\\tvec3 outgoingLight = diffuseColor.rgb * matcapColor.rgb;\\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n}\";\n\nconst vertex$7 = \"#define NORMAL\\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( USE_NORMALMAP_TANGENTSPACE )\\n\\tvarying vec3 vViewPosition;\\n#endif\\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\nvoid main() {\\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( USE_NORMALMAP_TANGENTSPACE )\\n\\tvViewPosition = - mvPosition.xyz;\\n#endif\\n}\";\n\nconst fragment$7 = \"#define NORMAL\\nuniform float opacity;\\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( USE_NORMALMAP_TANGENTSPACE )\\n\\tvarying vec3 vViewPosition;\\n#endif\\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\nvoid main() {\\n\\tvec4 diffuseColor = vec4( 0.0, 0.0, 0.0, opacity );\\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\tgl_FragColor = vec4( packNormalToRGB( normal ), diffuseColor.a );\\n\\t#ifdef OPAQUE\\n\\t\\tgl_FragColor.a = 1.0;\\n\\t#endif\\n}\";\n\nconst vertex$6 = \"#define PHONG\\nvarying vec3 vViewPosition;\\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\nvoid main() {\\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\tvViewPosition = - mvPosition.xyz;\\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n}\";\n\nconst fragment$6 = \"#define PHONG\\nuniform vec3 diffuse;\\nuniform vec3 emissive;\\nuniform vec3 specular;\\nuniform float shininess;\\nuniform float opacity;\\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\nvoid main() {\\n\\tvec4 diffuseColor = vec4( diffuse, opacity );\\n\\t#include \\n\\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\\n\\tvec3 totalEmissiveRadiance = emissive;\\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + reflectedLight.directSpecular + reflectedLight.indirectSpecular + totalEmissiveRadiance;\\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n}\";\n\nconst vertex$5 = \"#define STANDARD\\nvarying vec3 vViewPosition;\\n#ifdef USE_TRANSMISSION\\n\\tvarying vec3 vWorldPosition;\\n#endif\\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\nvoid main() {\\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\tvViewPosition = - mvPosition.xyz;\\n\\t#include \\n\\t#include \\n\\t#include \\n#ifdef USE_TRANSMISSION\\n\\tvWorldPosition = worldPosition.xyz;\\n#endif\\n}\";\n\nconst fragment$5 = \"#define STANDARD\\n#ifdef PHYSICAL\\n\\t#define IOR\\n\\t#define USE_SPECULAR\\n#endif\\nuniform vec3 diffuse;\\nuniform vec3 emissive;\\nuniform float roughness;\\nuniform float metalness;\\nuniform float opacity;\\n#ifdef IOR\\n\\tuniform float ior;\\n#endif\\n#ifdef USE_SPECULAR\\n\\tuniform float specularIntensity;\\n\\tuniform vec3 specularColor;\\n\\t#ifdef USE_SPECULAR_COLORMAP\\n\\t\\tuniform sampler2D specularColorMap;\\n\\t#endif\\n\\t#ifdef USE_SPECULAR_INTENSITYMAP\\n\\t\\tuniform sampler2D specularIntensityMap;\\n\\t#endif\\n#endif\\n#ifdef USE_CLEARCOAT\\n\\tuniform float clearcoat;\\n\\tuniform float clearcoatRoughness;\\n#endif\\n#ifdef USE_DISPERSION\\n\\tuniform float dispersion;\\n#endif\\n#ifdef USE_IRIDESCENCE\\n\\tuniform float iridescence;\\n\\tuniform float iridescenceIOR;\\n\\tuniform float iridescenceThicknessMinimum;\\n\\tuniform float iridescenceThicknessMaximum;\\n#endif\\n#ifdef USE_SHEEN\\n\\tuniform vec3 sheenColor;\\n\\tuniform float sheenRoughness;\\n\\t#ifdef USE_SHEEN_COLORMAP\\n\\t\\tuniform sampler2D sheenColorMap;\\n\\t#endif\\n\\t#ifdef USE_SHEEN_ROUGHNESSMAP\\n\\t\\tuniform sampler2D sheenRoughnessMap;\\n\\t#endif\\n#endif\\n#ifdef USE_ANISOTROPY\\n\\tuniform vec2 anisotropyVector;\\n\\t#ifdef USE_ANISOTROPYMAP\\n\\t\\tuniform sampler2D anisotropyMap;\\n\\t#endif\\n#endif\\nvarying vec3 vViewPosition;\\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\nvoid main() {\\n\\tvec4 diffuseColor = vec4( diffuse, opacity );\\n\\t#include \\n\\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\\n\\tvec3 totalEmissiveRadiance = emissive;\\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\tvec3 totalDiffuse = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse;\\n\\tvec3 totalSpecular = reflectedLight.directSpecular + reflectedLight.indirectSpecular;\\n\\t#include \\n\\tvec3 outgoingLight = totalDiffuse + totalSpecular + totalEmissiveRadiance;\\n\\t#ifdef USE_SHEEN\\n\\t\\tfloat sheenEnergyComp = 1.0 - 0.157 * max3( material.sheenColor );\\n\\t\\toutgoingLight = outgoingLight * sheenEnergyComp + sheenSpecularDirect + sheenSpecularIndirect;\\n\\t#endif\\n\\t#ifdef USE_CLEARCOAT\\n\\t\\tfloat dotNVcc = saturate( dot( geometryClearcoatNormal, geometryViewDir ) );\\n\\t\\tvec3 Fcc = F_Schlick( material.clearcoatF0, material.clearcoatF90, dotNVcc );\\n\\t\\toutgoingLight = outgoingLight * ( 1.0 - material.clearcoat * Fcc ) + ( clearcoatSpecularDirect + clearcoatSpecularIndirect ) * material.clearcoat;\\n\\t#endif\\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n}\";\n\nconst vertex$4 = \"#define TOON\\nvarying vec3 vViewPosition;\\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\nvoid main() {\\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\tvViewPosition = - mvPosition.xyz;\\n\\t#include \\n\\t#include \\n\\t#include \\n}\";\n\nconst fragment$4 = \"#define TOON\\nuniform vec3 diffuse;\\nuniform vec3 emissive;\\nuniform float opacity;\\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\nvoid main() {\\n\\tvec4 diffuseColor = vec4( diffuse, opacity );\\n\\t#include \\n\\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\\n\\tvec3 totalEmissiveRadiance = emissive;\\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + totalEmissiveRadiance;\\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n}\";\n\nconst vertex$3 = \"uniform float size;\\nuniform float scale;\\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#ifdef USE_POINTS_UV\\n\\tvarying vec2 vUv;\\n\\tuniform mat3 uvTransform;\\n#endif\\nvoid main() {\\n\\t#ifdef USE_POINTS_UV\\n\\t\\tvUv = ( uvTransform * vec3( uv, 1 ) ).xy;\\n\\t#endif\\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\tgl_PointSize = size;\\n\\t#ifdef USE_SIZEATTENUATION\\n\\t\\tbool isPerspective = isPerspectiveMatrix( projectionMatrix );\\n\\t\\tif ( isPerspective ) gl_PointSize *= ( scale / - mvPosition.z );\\n\\t#endif\\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n}\";\n\nconst fragment$3 = \"uniform vec3 diffuse;\\nuniform float opacity;\\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\nvoid main() {\\n\\tvec4 diffuseColor = vec4( diffuse, opacity );\\n\\t#include \\n\\tvec3 outgoingLight = vec3( 0.0 );\\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\toutgoingLight = diffuseColor.rgb;\\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n}\";\n\nconst vertex$2 = \"#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\nvoid main() {\\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n}\";\n\nconst fragment$2 = \"uniform vec3 color;\\nuniform float opacity;\\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\nvoid main() {\\n\\t#include \\n\\tgl_FragColor = vec4( color, opacity * ( 1.0 - getShadowMask() ) );\\n\\t#include \\n\\t#include \\n\\t#include \\n}\";\n\nconst vertex$1 = \"uniform float rotation;\\nuniform vec2 center;\\n#include \\n#include \\n#include \\n#include \\n#include \\nvoid main() {\\n\\t#include \\n\\tvec4 mvPosition = modelViewMatrix * vec4( 0.0, 0.0, 0.0, 1.0 );\\n\\tvec2 scale;\\n\\tscale.x = length( vec3( modelMatrix[ 0 ].x, modelMatrix[ 0 ].y, modelMatrix[ 0 ].z ) );\\n\\tscale.y = length( vec3( modelMatrix[ 1 ].x, modelMatrix[ 1 ].y, modelMatrix[ 1 ].z ) );\\n\\t#ifndef USE_SIZEATTENUATION\\n\\t\\tbool isPerspective = isPerspectiveMatrix( projectionMatrix );\\n\\t\\tif ( isPerspective ) scale *= - mvPosition.z;\\n\\t#endif\\n\\tvec2 alignedPosition = ( position.xy - ( center - vec2( 0.5 ) ) ) * scale;\\n\\tvec2 rotatedPosition;\\n\\trotatedPosition.x = cos( rotation ) * alignedPosition.x - sin( rotation ) * alignedPosition.y;\\n\\trotatedPosition.y = sin( rotation ) * alignedPosition.x + cos( rotation ) * alignedPosition.y;\\n\\tmvPosition.xy += rotatedPosition;\\n\\tgl_Position = projectionMatrix * mvPosition;\\n\\t#include \\n\\t#include \\n\\t#include \\n}\";\n\nconst fragment$1 = \"uniform vec3 diffuse;\\nuniform float opacity;\\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\n#include \\nvoid main() {\\n\\tvec4 diffuseColor = vec4( diffuse, opacity );\\n\\t#include \\n\\tvec3 outgoingLight = vec3( 0.0 );\\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n\\toutgoingLight = diffuseColor.rgb;\\n\\t#include \\n\\t#include \\n\\t#include \\n\\t#include \\n}\";\n\nconst ShaderChunk = {\n\talphahash_fragment: alphahash_fragment,\n\talphahash_pars_fragment: alphahash_pars_fragment,\n\talphamap_fragment: alphamap_fragment,\n\talphamap_pars_fragment: alphamap_pars_fragment,\n\talphatest_fragment: alphatest_fragment,\n\talphatest_pars_fragment: alphatest_pars_fragment,\n\taomap_fragment: aomap_fragment,\n\taomap_pars_fragment: aomap_pars_fragment,\n\tbatching_pars_vertex: batching_pars_vertex,\n\tbatching_vertex: batching_vertex,\n\tbegin_vertex: begin_vertex,\n\tbeginnormal_vertex: beginnormal_vertex,\n\tbsdfs: bsdfs,\n\tiridescence_fragment: iridescence_fragment,\n\tbumpmap_pars_fragment: bumpmap_pars_fragment,\n\tclipping_planes_fragment: clipping_planes_fragment,\n\tclipping_planes_pars_fragment: clipping_planes_pars_fragment,\n\tclipping_planes_pars_vertex: clipping_planes_pars_vertex,\n\tclipping_planes_vertex: clipping_planes_vertex,\n\tcolor_fragment: color_fragment,\n\tcolor_pars_fragment: color_pars_fragment,\n\tcolor_pars_vertex: color_pars_vertex,\n\tcolor_vertex: color_vertex,\n\tcommon: common,\n\tcube_uv_reflection_fragment: cube_uv_reflection_fragment,\n\tdefaultnormal_vertex: defaultnormal_vertex,\n\tdisplacementmap_pars_vertex: displacementmap_pars_vertex,\n\tdisplacementmap_vertex: displacementmap_vertex,\n\temissivemap_fragment: emissivemap_fragment,\n\temissivemap_pars_fragment: emissivemap_pars_fragment,\n\tcolorspace_fragment: colorspace_fragment,\n\tcolorspace_pars_fragment: colorspace_pars_fragment,\n\tenvmap_fragment: envmap_fragment,\n\tenvmap_common_pars_fragment: envmap_common_pars_fragment,\n\tenvmap_pars_fragment: envmap_pars_fragment,\n\tenvmap_pars_vertex: envmap_pars_vertex,\n\tenvmap_physical_pars_fragment: envmap_physical_pars_fragment,\n\tenvmap_vertex: envmap_vertex,\n\tfog_vertex: fog_vertex,\n\tfog_pars_vertex: fog_pars_vertex,\n\tfog_fragment: fog_fragment,\n\tfog_pars_fragment: fog_pars_fragment,\n\tgradientmap_pars_fragment: gradientmap_pars_fragment,\n\tlightmap_pars_fragment: lightmap_pars_fragment,\n\tlights_lambert_fragment: lights_lambert_fragment,\n\tlights_lambert_pars_fragment: lights_lambert_pars_fragment,\n\tlights_pars_begin: lights_pars_begin,\n\tlights_toon_fragment: lights_toon_fragment,\n\tlights_toon_pars_fragment: lights_toon_pars_fragment,\n\tlights_phong_fragment: lights_phong_fragment,\n\tlights_phong_pars_fragment: lights_phong_pars_fragment,\n\tlights_physical_fragment: lights_physical_fragment,\n\tlights_physical_pars_fragment: lights_physical_pars_fragment,\n\tlights_fragment_begin: lights_fragment_begin,\n\tlights_fragment_maps: lights_fragment_maps,\n\tlights_fragment_end: lights_fragment_end,\n\tlogdepthbuf_fragment: logdepthbuf_fragment,\n\tlogdepthbuf_pars_fragment: logdepthbuf_pars_fragment,\n\tlogdepthbuf_pars_vertex: logdepthbuf_pars_vertex,\n\tlogdepthbuf_vertex: logdepthbuf_vertex,\n\tmap_fragment: map_fragment,\n\tmap_pars_fragment: map_pars_fragment,\n\tmap_particle_fragment: map_particle_fragment,\n\tmap_particle_pars_fragment: map_particle_pars_fragment,\n\tmetalnessmap_fragment: metalnessmap_fragment,\n\tmetalnessmap_pars_fragment: metalnessmap_pars_fragment,\n\tmorphinstance_vertex: morphinstance_vertex,\n\tmorphcolor_vertex: morphcolor_vertex,\n\tmorphnormal_vertex: morphnormal_vertex,\n\tmorphtarget_pars_vertex: morphtarget_pars_vertex,\n\tmorphtarget_vertex: morphtarget_vertex,\n\tnormal_fragment_begin: normal_fragment_begin,\n\tnormal_fragment_maps: normal_fragment_maps,\n\tnormal_pars_fragment: normal_pars_fragment,\n\tnormal_pars_vertex: normal_pars_vertex,\n\tnormal_vertex: normal_vertex,\n\tnormalmap_pars_fragment: normalmap_pars_fragment,\n\tclearcoat_normal_fragment_begin: clearcoat_normal_fragment_begin,\n\tclearcoat_normal_fragment_maps: clearcoat_normal_fragment_maps,\n\tclearcoat_pars_fragment: clearcoat_pars_fragment,\n\tiridescence_pars_fragment: iridescence_pars_fragment,\n\topaque_fragment: opaque_fragment,\n\tpacking: packing,\n\tpremultiplied_alpha_fragment: premultiplied_alpha_fragment,\n\tproject_vertex: project_vertex,\n\tdithering_fragment: dithering_fragment,\n\tdithering_pars_fragment: dithering_pars_fragment,\n\troughnessmap_fragment: roughnessmap_fragment,\n\troughnessmap_pars_fragment: roughnessmap_pars_fragment,\n\tshadowmap_pars_fragment: shadowmap_pars_fragment,\n\tshadowmap_pars_vertex: shadowmap_pars_vertex,\n\tshadowmap_vertex: shadowmap_vertex,\n\tshadowmask_pars_fragment: shadowmask_pars_fragment,\n\tskinbase_vertex: skinbase_vertex,\n\tskinning_pars_vertex: skinning_pars_vertex,\n\tskinning_vertex: skinning_vertex,\n\tskinnormal_vertex: skinnormal_vertex,\n\tspecularmap_fragment: specularmap_fragment,\n\tspecularmap_pars_fragment: specularmap_pars_fragment,\n\ttonemapping_fragment: tonemapping_fragment,\n\ttonemapping_pars_fragment: tonemapping_pars_fragment,\n\ttransmission_fragment: transmission_fragment,\n\ttransmission_pars_fragment: transmission_pars_fragment,\n\tuv_pars_fragment: uv_pars_fragment,\n\tuv_pars_vertex: uv_pars_vertex,\n\tuv_vertex: uv_vertex,\n\tworldpos_vertex: worldpos_vertex,\n\n\tbackground_vert: vertex$h,\n\tbackground_frag: fragment$h,\n\tbackgroundCube_vert: vertex$g,\n\tbackgroundCube_frag: fragment$g,\n\tcube_vert: vertex$f,\n\tcube_frag: fragment$f,\n\tdepth_vert: vertex$e,\n\tdepth_frag: fragment$e,\n\tdistanceRGBA_vert: vertex$d,\n\tdistanceRGBA_frag: fragment$d,\n\tequirect_vert: vertex$c,\n\tequirect_frag: fragment$c,\n\tlinedashed_vert: vertex$b,\n\tlinedashed_frag: fragment$b,\n\tmeshbasic_vert: vertex$a,\n\tmeshbasic_frag: fragment$a,\n\tmeshlambert_vert: vertex$9,\n\tmeshlambert_frag: fragment$9,\n\tmeshmatcap_vert: vertex$8,\n\tmeshmatcap_frag: fragment$8,\n\tmeshnormal_vert: vertex$7,\n\tmeshnormal_frag: fragment$7,\n\tmeshphong_vert: vertex$6,\n\tmeshphong_frag: fragment$6,\n\tmeshphysical_vert: vertex$5,\n\tmeshphysical_frag: fragment$5,\n\tmeshtoon_vert: vertex$4,\n\tmeshtoon_frag: fragment$4,\n\tpoints_vert: vertex$3,\n\tpoints_frag: fragment$3,\n\tshadow_vert: vertex$2,\n\tshadow_frag: fragment$2,\n\tsprite_vert: vertex$1,\n\tsprite_frag: fragment$1\n};\n\n/**\n * Uniforms library for shared webgl shaders\n */\n\nconst UniformsLib = {\n\n\tcommon: {\n\n\t\tdiffuse: { value: /*@__PURE__*/ new Color( 0xffffff ) },\n\t\topacity: { value: 1.0 },\n\n\t\tmap: { value: null },\n\t\tmapTransform: { value: /*@__PURE__*/ new Matrix3() },\n\n\t\talphaMap: { value: null },\n\t\talphaMapTransform: { value: /*@__PURE__*/ new Matrix3() },\n\n\t\talphaTest: { value: 0 }\n\n\t},\n\n\tspecularmap: {\n\n\t\tspecularMap: { value: null },\n\t\tspecularMapTransform: { value: /*@__PURE__*/ new Matrix3() }\n\n\t},\n\n\tenvmap: {\n\n\t\tenvMap: { value: null },\n\t\tenvMapRotation: { value: /*@__PURE__*/ new Matrix3() },\n\t\tflipEnvMap: { value: - 1 },\n\t\treflectivity: { value: 1.0 }, // basic, lambert, phong\n\t\tior: { value: 1.5 }, // physical\n\t\trefractionRatio: { value: 0.98 }, // basic, lambert, phong\n\n\t},\n\n\taomap: {\n\n\t\taoMap: { value: null },\n\t\taoMapIntensity: { value: 1 },\n\t\taoMapTransform: { value: /*@__PURE__*/ new Matrix3() }\n\n\t},\n\n\tlightmap: {\n\n\t\tlightMap: { value: null },\n\t\tlightMapIntensity: { value: 1 },\n\t\tlightMapTransform: { value: /*@__PURE__*/ new Matrix3() }\n\n\t},\n\n\tbumpmap: {\n\n\t\tbumpMap: { value: null },\n\t\tbumpMapTransform: { value: /*@__PURE__*/ new Matrix3() },\n\t\tbumpScale: { value: 1 }\n\n\t},\n\n\tnormalmap: {\n\n\t\tnormalMap: { value: null },\n\t\tnormalMapTransform: { value: /*@__PURE__*/ new Matrix3() },\n\t\tnormalScale: { value: /*@__PURE__*/ new Vector2( 1, 1 ) }\n\n\t},\n\n\tdisplacementmap: {\n\n\t\tdisplacementMap: { value: null },\n\t\tdisplacementMapTransform: { value: /*@__PURE__*/ new Matrix3() },\n\t\tdisplacementScale: { value: 1 },\n\t\tdisplacementBias: { value: 0 }\n\n\t},\n\n\temissivemap: {\n\n\t\temissiveMap: { value: null },\n\t\temissiveMapTransform: { value: /*@__PURE__*/ new Matrix3() }\n\n\t},\n\n\tmetalnessmap: {\n\n\t\tmetalnessMap: { value: null },\n\t\tmetalnessMapTransform: { value: /*@__PURE__*/ new Matrix3() }\n\n\t},\n\n\troughnessmap: {\n\n\t\troughnessMap: { value: null },\n\t\troughnessMapTransform: { value: /*@__PURE__*/ new Matrix3() }\n\n\t},\n\n\tgradientmap: {\n\n\t\tgradientMap: { value: null }\n\n\t},\n\n\tfog: {\n\n\t\tfogDensity: { value: 0.00025 },\n\t\tfogNear: { value: 1 },\n\t\tfogFar: { value: 2000 },\n\t\tfogColor: { value: /*@__PURE__*/ new Color( 0xffffff ) }\n\n\t},\n\n\tlights: {\n\n\t\tambientLightColor: { value: [] },\n\n\t\tlightProbe: { value: [] },\n\n\t\tdirectionalLights: { value: [], properties: {\n\t\t\tdirection: {},\n\t\t\tcolor: {}\n\t\t} },\n\n\t\tdirectionalLightShadows: { value: [], properties: {\n\t\t\tshadowBias: {},\n\t\t\tshadowNormalBias: {},\n\t\t\tshadowRadius: {},\n\t\t\tshadowMapSize: {}\n\t\t} },\n\n\t\tdirectionalShadowMap: { value: [] },\n\t\tdirectionalShadowMatrix: { value: [] },\n\n\t\tspotLights: { value: [], properties: {\n\t\t\tcolor: {},\n\t\t\tposition: {},\n\t\t\tdirection: {},\n\t\t\tdistance: {},\n\t\t\tconeCos: {},\n\t\t\tpenumbraCos: {},\n\t\t\tdecay: {}\n\t\t} },\n\n\t\tspotLightShadows: { value: [], properties: {\n\t\t\tshadowBias: {},\n\t\t\tshadowNormalBias: {},\n\t\t\tshadowRadius: {},\n\t\t\tshadowMapSize: {}\n\t\t} },\n\n\t\tspotLightMap: { value: [] },\n\t\tspotShadowMap: { value: [] },\n\t\tspotLightMatrix: { value: [] },\n\n\t\tpointLights: { value: [], properties: {\n\t\t\tcolor: {},\n\t\t\tposition: {},\n\t\t\tdecay: {},\n\t\t\tdistance: {}\n\t\t} },\n\n\t\tpointLightShadows: { value: [], properties: {\n\t\t\tshadowBias: {},\n\t\t\tshadowNormalBias: {},\n\t\t\tshadowRadius: {},\n\t\t\tshadowMapSize: {},\n\t\t\tshadowCameraNear: {},\n\t\t\tshadowCameraFar: {}\n\t\t} },\n\n\t\tpointShadowMap: { value: [] },\n\t\tpointShadowMatrix: { value: [] },\n\n\t\themisphereLights: { value: [], properties: {\n\t\t\tdirection: {},\n\t\t\tskyColor: {},\n\t\t\tgroundColor: {}\n\t\t} },\n\n\t\t// TODO (abelnation): RectAreaLight BRDF data needs to be moved from example to main src\n\t\trectAreaLights: { value: [], properties: {\n\t\t\tcolor: {},\n\t\t\tposition: {},\n\t\t\twidth: {},\n\t\t\theight: {}\n\t\t} },\n\n\t\tltc_1: { value: null },\n\t\tltc_2: { value: null }\n\n\t},\n\n\tpoints: {\n\n\t\tdiffuse: { value: /*@__PURE__*/ new Color( 0xffffff ) },\n\t\topacity: { value: 1.0 },\n\t\tsize: { value: 1.0 },\n\t\tscale: { value: 1.0 },\n\t\tmap: { value: null },\n\t\talphaMap: { value: null },\n\t\talphaMapTransform: { value: /*@__PURE__*/ new Matrix3() },\n\t\talphaTest: { value: 0 },\n\t\tuvTransform: { value: /*@__PURE__*/ new Matrix3() }\n\n\t},\n\n\tsprite: {\n\n\t\tdiffuse: { value: /*@__PURE__*/ new Color( 0xffffff ) },\n\t\topacity: { value: 1.0 },\n\t\tcenter: { value: /*@__PURE__*/ new Vector2( 0.5, 0.5 ) },\n\t\trotation: { value: 0.0 },\n\t\tmap: { value: null },\n\t\tmapTransform: { value: /*@__PURE__*/ new Matrix3() },\n\t\talphaMap: { value: null },\n\t\talphaMapTransform: { value: /*@__PURE__*/ new Matrix3() },\n\t\talphaTest: { value: 0 }\n\n\t}\n\n};\n\nconst ShaderLib = {\n\n\tbasic: {\n\n\t\tuniforms: /*@__PURE__*/ mergeUniforms( [\n\t\t\tUniformsLib.common,\n\t\t\tUniformsLib.specularmap,\n\t\t\tUniformsLib.envmap,\n\t\t\tUniformsLib.aomap,\n\t\t\tUniformsLib.lightmap,\n\t\t\tUniformsLib.fog\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.meshbasic_vert,\n\t\tfragmentShader: ShaderChunk.meshbasic_frag\n\n\t},\n\n\tlambert: {\n\n\t\tuniforms: /*@__PURE__*/ mergeUniforms( [\n\t\t\tUniformsLib.common,\n\t\t\tUniformsLib.specularmap,\n\t\t\tUniformsLib.envmap,\n\t\t\tUniformsLib.aomap,\n\t\t\tUniformsLib.lightmap,\n\t\t\tUniformsLib.emissivemap,\n\t\t\tUniformsLib.bumpmap,\n\t\t\tUniformsLib.normalmap,\n\t\t\tUniformsLib.displacementmap,\n\t\t\tUniformsLib.fog,\n\t\t\tUniformsLib.lights,\n\t\t\t{\n\t\t\t\temissive: { value: /*@__PURE__*/ new Color( 0x000000 ) }\n\t\t\t}\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.meshlambert_vert,\n\t\tfragmentShader: ShaderChunk.meshlambert_frag\n\n\t},\n\n\tphong: {\n\n\t\tuniforms: /*@__PURE__*/ mergeUniforms( [\n\t\t\tUniformsLib.common,\n\t\t\tUniformsLib.specularmap,\n\t\t\tUniformsLib.envmap,\n\t\t\tUniformsLib.aomap,\n\t\t\tUniformsLib.lightmap,\n\t\t\tUniformsLib.emissivemap,\n\t\t\tUniformsLib.bumpmap,\n\t\t\tUniformsLib.normalmap,\n\t\t\tUniformsLib.displacementmap,\n\t\t\tUniformsLib.fog,\n\t\t\tUniformsLib.lights,\n\t\t\t{\n\t\t\t\temissive: { value: /*@__PURE__*/ new Color( 0x000000 ) },\n\t\t\t\tspecular: { value: /*@__PURE__*/ new Color( 0x111111 ) },\n\t\t\t\tshininess: { value: 30 }\n\t\t\t}\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.meshphong_vert,\n\t\tfragmentShader: ShaderChunk.meshphong_frag\n\n\t},\n\n\tstandard: {\n\n\t\tuniforms: /*@__PURE__*/ mergeUniforms( [\n\t\t\tUniformsLib.common,\n\t\t\tUniformsLib.envmap,\n\t\t\tUniformsLib.aomap,\n\t\t\tUniformsLib.lightmap,\n\t\t\tUniformsLib.emissivemap,\n\t\t\tUniformsLib.bumpmap,\n\t\t\tUniformsLib.normalmap,\n\t\t\tUniformsLib.displacementmap,\n\t\t\tUniformsLib.roughnessmap,\n\t\t\tUniformsLib.metalnessmap,\n\t\t\tUniformsLib.fog,\n\t\t\tUniformsLib.lights,\n\t\t\t{\n\t\t\t\temissive: { value: /*@__PURE__*/ new Color( 0x000000 ) },\n\t\t\t\troughness: { value: 1.0 },\n\t\t\t\tmetalness: { value: 0.0 },\n\t\t\t\tenvMapIntensity: { value: 1 }\n\t\t\t}\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.meshphysical_vert,\n\t\tfragmentShader: ShaderChunk.meshphysical_frag\n\n\t},\n\n\ttoon: {\n\n\t\tuniforms: /*@__PURE__*/ mergeUniforms( [\n\t\t\tUniformsLib.common,\n\t\t\tUniformsLib.aomap,\n\t\t\tUniformsLib.lightmap,\n\t\t\tUniformsLib.emissivemap,\n\t\t\tUniformsLib.bumpmap,\n\t\t\tUniformsLib.normalmap,\n\t\t\tUniformsLib.displacementmap,\n\t\t\tUniformsLib.gradientmap,\n\t\t\tUniformsLib.fog,\n\t\t\tUniformsLib.lights,\n\t\t\t{\n\t\t\t\temissive: { value: /*@__PURE__*/ new Color( 0x000000 ) }\n\t\t\t}\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.meshtoon_vert,\n\t\tfragmentShader: ShaderChunk.meshtoon_frag\n\n\t},\n\n\tmatcap: {\n\n\t\tuniforms: /*@__PURE__*/ mergeUniforms( [\n\t\t\tUniformsLib.common,\n\t\t\tUniformsLib.bumpmap,\n\t\t\tUniformsLib.normalmap,\n\t\t\tUniformsLib.displacementmap,\n\t\t\tUniformsLib.fog,\n\t\t\t{\n\t\t\t\tmatcap: { value: null }\n\t\t\t}\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.meshmatcap_vert,\n\t\tfragmentShader: ShaderChunk.meshmatcap_frag\n\n\t},\n\n\tpoints: {\n\n\t\tuniforms: /*@__PURE__*/ mergeUniforms( [\n\t\t\tUniformsLib.points,\n\t\t\tUniformsLib.fog\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.points_vert,\n\t\tfragmentShader: ShaderChunk.points_frag\n\n\t},\n\n\tdashed: {\n\n\t\tuniforms: /*@__PURE__*/ mergeUniforms( [\n\t\t\tUniformsLib.common,\n\t\t\tUniformsLib.fog,\n\t\t\t{\n\t\t\t\tscale: { value: 1 },\n\t\t\t\tdashSize: { value: 1 },\n\t\t\t\ttotalSize: { value: 2 }\n\t\t\t}\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.linedashed_vert,\n\t\tfragmentShader: ShaderChunk.linedashed_frag\n\n\t},\n\n\tdepth: {\n\n\t\tuniforms: /*@__PURE__*/ mergeUniforms( [\n\t\t\tUniformsLib.common,\n\t\t\tUniformsLib.displacementmap\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.depth_vert,\n\t\tfragmentShader: ShaderChunk.depth_frag\n\n\t},\n\n\tnormal: {\n\n\t\tuniforms: /*@__PURE__*/ mergeUniforms( [\n\t\t\tUniformsLib.common,\n\t\t\tUniformsLib.bumpmap,\n\t\t\tUniformsLib.normalmap,\n\t\t\tUniformsLib.displacementmap,\n\t\t\t{\n\t\t\t\topacity: { value: 1.0 }\n\t\t\t}\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.meshnormal_vert,\n\t\tfragmentShader: ShaderChunk.meshnormal_frag\n\n\t},\n\n\tsprite: {\n\n\t\tuniforms: /*@__PURE__*/ mergeUniforms( [\n\t\t\tUniformsLib.sprite,\n\t\t\tUniformsLib.fog\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.sprite_vert,\n\t\tfragmentShader: ShaderChunk.sprite_frag\n\n\t},\n\n\tbackground: {\n\n\t\tuniforms: {\n\t\t\tuvTransform: { value: /*@__PURE__*/ new Matrix3() },\n\t\t\tt2D: { value: null },\n\t\t\tbackgroundIntensity: { value: 1 }\n\t\t},\n\n\t\tvertexShader: ShaderChunk.background_vert,\n\t\tfragmentShader: ShaderChunk.background_frag\n\n\t},\n\n\tbackgroundCube: {\n\n\t\tuniforms: {\n\t\t\tenvMap: { value: null },\n\t\t\tflipEnvMap: { value: - 1 },\n\t\t\tbackgroundBlurriness: { value: 0 },\n\t\t\tbackgroundIntensity: { value: 1 },\n\t\t\tbackgroundRotation: { value: /*@__PURE__*/ new Matrix3() }\n\t\t},\n\n\t\tvertexShader: ShaderChunk.backgroundCube_vert,\n\t\tfragmentShader: ShaderChunk.backgroundCube_frag\n\n\t},\n\n\tcube: {\n\n\t\tuniforms: {\n\t\t\ttCube: { value: null },\n\t\t\ttFlip: { value: - 1 },\n\t\t\topacity: { value: 1.0 }\n\t\t},\n\n\t\tvertexShader: ShaderChunk.cube_vert,\n\t\tfragmentShader: ShaderChunk.cube_frag\n\n\t},\n\n\tequirect: {\n\n\t\tuniforms: {\n\t\t\ttEquirect: { value: null },\n\t\t},\n\n\t\tvertexShader: ShaderChunk.equirect_vert,\n\t\tfragmentShader: ShaderChunk.equirect_frag\n\n\t},\n\n\tdistanceRGBA: {\n\n\t\tuniforms: /*@__PURE__*/ mergeUniforms( [\n\t\t\tUniformsLib.common,\n\t\t\tUniformsLib.displacementmap,\n\t\t\t{\n\t\t\t\treferencePosition: { value: /*@__PURE__*/ new Vector3() },\n\t\t\t\tnearDistance: { value: 1 },\n\t\t\t\tfarDistance: { value: 1000 }\n\t\t\t}\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.distanceRGBA_vert,\n\t\tfragmentShader: ShaderChunk.distanceRGBA_frag\n\n\t},\n\n\tshadow: {\n\n\t\tuniforms: /*@__PURE__*/ mergeUniforms( [\n\t\t\tUniformsLib.lights,\n\t\t\tUniformsLib.fog,\n\t\t\t{\n\t\t\t\tcolor: { value: /*@__PURE__*/ new Color( 0x00000 ) },\n\t\t\t\topacity: { value: 1.0 }\n\t\t\t},\n\t\t] ),\n\n\t\tvertexShader: ShaderChunk.shadow_vert,\n\t\tfragmentShader: ShaderChunk.shadow_frag\n\n\t}\n\n};\n\nShaderLib.physical = {\n\n\tuniforms: /*@__PURE__*/ mergeUniforms( [\n\t\tShaderLib.standard.uniforms,\n\t\t{\n\t\t\tclearcoat: { value: 0 },\n\t\t\tclearcoatMap: { value: null },\n\t\t\tclearcoatMapTransform: { value: /*@__PURE__*/ new Matrix3() },\n\t\t\tclearcoatNormalMap: { value: null },\n\t\t\tclearcoatNormalMapTransform: { value: /*@__PURE__*/ new Matrix3() },\n\t\t\tclearcoatNormalScale: { value: /*@__PURE__*/ new Vector2( 1, 1 ) },\n\t\t\tclearcoatRoughness: { value: 0 },\n\t\t\tclearcoatRoughnessMap: { value: null },\n\t\t\tclearcoatRoughnessMapTransform: { value: /*@__PURE__*/ new Matrix3() },\n\t\t\tdispersion: { value: 0 },\n\t\t\tiridescence: { value: 0 },\n\t\t\tiridescenceMap: { value: null },\n\t\t\tiridescenceMapTransform: { value: /*@__PURE__*/ new Matrix3() },\n\t\t\tiridescenceIOR: { value: 1.3 },\n\t\t\tiridescenceThicknessMinimum: { value: 100 },\n\t\t\tiridescenceThicknessMaximum: { value: 400 },\n\t\t\tiridescenceThicknessMap: { value: null },\n\t\t\tiridescenceThicknessMapTransform: { value: /*@__PURE__*/ new Matrix3() },\n\t\t\tsheen: { value: 0 },\n\t\t\tsheenColor: { value: /*@__PURE__*/ new Color( 0x000000 ) },\n\t\t\tsheenColorMap: { value: null },\n\t\t\tsheenColorMapTransform: { value: /*@__PURE__*/ new Matrix3() },\n\t\t\tsheenRoughness: { value: 1 },\n\t\t\tsheenRoughnessMap: { value: null },\n\t\t\tsheenRoughnessMapTransform: { value: /*@__PURE__*/ new Matrix3() },\n\t\t\ttransmission: { value: 0 },\n\t\t\ttransmissionMap: { value: null },\n\t\t\ttransmissionMapTransform: { value: /*@__PURE__*/ new Matrix3() },\n\t\t\ttransmissionSamplerSize: { value: /*@__PURE__*/ new Vector2() },\n\t\t\ttransmissionSamplerMap: { value: null },\n\t\t\tthickness: { value: 0 },\n\t\t\tthicknessMap: { value: null },\n\t\t\tthicknessMapTransform: { value: /*@__PURE__*/ new Matrix3() },\n\t\t\tattenuationDistance: { value: 0 },\n\t\t\tattenuationColor: { value: /*@__PURE__*/ new Color( 0x000000 ) },\n\t\t\tspecularColor: { value: /*@__PURE__*/ new Color( 1, 1, 1 ) },\n\t\t\tspecularColorMap: { value: null },\n\t\t\tspecularColorMapTransform: { value: /*@__PURE__*/ new Matrix3() },\n\t\t\tspecularIntensity: { value: 1 },\n\t\t\tspecularIntensityMap: { value: null },\n\t\t\tspecularIntensityMapTransform: { value: /*@__PURE__*/ new Matrix3() },\n\t\t\tanisotropyVector: { value: /*@__PURE__*/ new Vector2() },\n\t\t\tanisotropyMap: { value: null },\n\t\t\tanisotropyMapTransform: { value: /*@__PURE__*/ new Matrix3() },\n\t\t}\n\t] ),\n\n\tvertexShader: ShaderChunk.meshphysical_vert,\n\tfragmentShader: ShaderChunk.meshphysical_frag\n\n};\n\nconst _rgb = { r: 0, b: 0, g: 0 };\nconst _e1$1 = /*@__PURE__*/ new Euler();\nconst _m1$1 = /*@__PURE__*/ new Matrix4();\n\nfunction WebGLBackground( renderer, cubemaps, cubeuvmaps, state, objects, alpha, premultipliedAlpha ) {\n\n\tconst clearColor = new Color( 0x000000 );\n\tlet clearAlpha = alpha === true ? 0 : 1;\n\n\tlet planeMesh;\n\tlet boxMesh;\n\n\tlet currentBackground = null;\n\tlet currentBackgroundVersion = 0;\n\tlet currentTonemapping = null;\n\n\tfunction getBackground( scene ) {\n\n\t\tlet background = scene.isScene === true ? scene.background : null;\n\n\t\tif ( background && background.isTexture ) {\n\n\t\t\tconst usePMREM = scene.backgroundBlurriness > 0; // use PMREM if the user wants to blur the background\n\t\t\tbackground = ( usePMREM ? cubeuvmaps : cubemaps ).get( background );\n\n\t\t}\n\n\t\treturn background;\n\n\t}\n\n\tfunction render( scene ) {\n\n\t\tlet forceClear = false;\n\t\tconst background = getBackground( scene );\n\n\t\tif ( background === null ) {\n\n\t\t\tsetClear( clearColor, clearAlpha );\n\n\t\t} else if ( background && background.isColor ) {\n\n\t\t\tsetClear( background, 1 );\n\t\t\tforceClear = true;\n\n\t\t}\n\n\t\tconst environmentBlendMode = renderer.xr.getEnvironmentBlendMode();\n\n\t\tif ( environmentBlendMode === 'additive' ) {\n\n\t\t\tstate.buffers.color.setClear( 0, 0, 0, 1, premultipliedAlpha );\n\n\t\t} else if ( environmentBlendMode === 'alpha-blend' ) {\n\n\t\t\tstate.buffers.color.setClear( 0, 0, 0, 0, premultipliedAlpha );\n\n\t\t}\n\n\t\tif ( renderer.autoClear || forceClear ) {\n\n\t\t\t// buffers might not be writable which is required to ensure a correct clear\n\n\t\t\tstate.buffers.depth.setTest( true );\n\t\t\tstate.buffers.depth.setMask( true );\n\t\t\tstate.buffers.color.setMask( true );\n\n\t\t\trenderer.clear( renderer.autoClearColor, renderer.autoClearDepth, renderer.autoClearStencil );\n\n\t\t}\n\n\t}\n\n\tfunction addToRenderList( renderList, scene ) {\n\n\t\tconst background = getBackground( scene );\n\n\t\tif ( background && ( background.isCubeTexture || background.mapping === CubeUVReflectionMapping ) ) {\n\n\t\t\tif ( boxMesh === undefined ) {\n\n\t\t\t\tboxMesh = new Mesh(\n\t\t\t\t\tnew BoxGeometry( 1, 1, 1 ),\n\t\t\t\t\tnew ShaderMaterial( {\n\t\t\t\t\t\tname: 'BackgroundCubeMaterial',\n\t\t\t\t\t\tuniforms: cloneUniforms( ShaderLib.backgroundCube.uniforms ),\n\t\t\t\t\t\tvertexShader: ShaderLib.backgroundCube.vertexShader,\n\t\t\t\t\t\tfragmentShader: ShaderLib.backgroundCube.fragmentShader,\n\t\t\t\t\t\tside: BackSide,\n\t\t\t\t\t\tdepthTest: false,\n\t\t\t\t\t\tdepthWrite: false,\n\t\t\t\t\t\tfog: false\n\t\t\t\t\t} )\n\t\t\t\t);\n\n\t\t\t\tboxMesh.geometry.deleteAttribute( 'normal' );\n\t\t\t\tboxMesh.geometry.deleteAttribute( 'uv' );\n\n\t\t\t\tboxMesh.onBeforeRender = function ( renderer, scene, camera ) {\n\n\t\t\t\t\tthis.matrixWorld.copyPosition( camera.matrixWorld );\n\n\t\t\t\t};\n\n\t\t\t\t// add \"envMap\" material property so the renderer can evaluate it like for built-in materials\n\t\t\t\tObject.defineProperty( boxMesh.material, 'envMap', {\n\n\t\t\t\t\tget: function () {\n\n\t\t\t\t\t\treturn this.uniforms.envMap.value;\n\n\t\t\t\t\t}\n\n\t\t\t\t} );\n\n\t\t\t\tobjects.update( boxMesh );\n\n\t\t\t}\n\n\t\t\t_e1$1.copy( scene.backgroundRotation );\n\n\t\t\t// accommodate left-handed frame\n\t\t\t_e1$1.x *= - 1; _e1$1.y *= - 1; _e1$1.z *= - 1;\n\n\t\t\tif ( background.isCubeTexture && background.isRenderTargetTexture === false ) {\n\n\t\t\t\t// environment maps which are not cube render targets or PMREMs follow a different convention\n\t\t\t\t_e1$1.y *= - 1;\n\t\t\t\t_e1$1.z *= - 1;\n\n\t\t\t}\n\n\t\t\tboxMesh.material.uniforms.envMap.value = background;\n\t\t\tboxMesh.material.uniforms.flipEnvMap.value = ( background.isCubeTexture && background.isRenderTargetTexture === false ) ? - 1 : 1;\n\t\t\tboxMesh.material.uniforms.backgroundBlurriness.value = scene.backgroundBlurriness;\n\t\t\tboxMesh.material.uniforms.backgroundIntensity.value = scene.backgroundIntensity;\n\t\t\tboxMesh.material.uniforms.backgroundRotation.value.setFromMatrix4( _m1$1.makeRotationFromEuler( _e1$1 ) );\n\t\t\tboxMesh.material.toneMapped = ColorManagement.getTransfer( background.colorSpace ) !== SRGBTransfer;\n\n\t\t\tif ( currentBackground !== background ||\n\t\t\t\tcurrentBackgroundVersion !== background.version ||\n\t\t\t\tcurrentTonemapping !== renderer.toneMapping ) {\n\n\t\t\t\tboxMesh.material.needsUpdate = true;\n\n\t\t\t\tcurrentBackground = background;\n\t\t\t\tcurrentBackgroundVersion = background.version;\n\t\t\t\tcurrentTonemapping = renderer.toneMapping;\n\n\t\t\t}\n\n\t\t\tboxMesh.layers.enableAll();\n\n\t\t\t// push to the pre-sorted opaque render list\n\t\t\trenderList.unshift( boxMesh, boxMesh.geometry, boxMesh.material, 0, 0, null );\n\n\t\t} else if ( background && background.isTexture ) {\n\n\t\t\tif ( planeMesh === undefined ) {\n\n\t\t\t\tplaneMesh = new Mesh(\n\t\t\t\t\tnew PlaneGeometry( 2, 2 ),\n\t\t\t\t\tnew ShaderMaterial( {\n\t\t\t\t\t\tname: 'BackgroundMaterial',\n\t\t\t\t\t\tuniforms: cloneUniforms( ShaderLib.background.uniforms ),\n\t\t\t\t\t\tvertexShader: ShaderLib.background.vertexShader,\n\t\t\t\t\t\tfragmentShader: ShaderLib.background.fragmentShader,\n\t\t\t\t\t\tside: FrontSide,\n\t\t\t\t\t\tdepthTest: false,\n\t\t\t\t\t\tdepthWrite: false,\n\t\t\t\t\t\tfog: false\n\t\t\t\t\t} )\n\t\t\t\t);\n\n\t\t\t\tplaneMesh.geometry.deleteAttribute( 'normal' );\n\n\t\t\t\t// add \"map\" material property so the renderer can evaluate it like for built-in materials\n\t\t\t\tObject.defineProperty( planeMesh.material, 'map', {\n\n\t\t\t\t\tget: function () {\n\n\t\t\t\t\t\treturn this.uniforms.t2D.value;\n\n\t\t\t\t\t}\n\n\t\t\t\t} );\n\n\t\t\t\tobjects.update( planeMesh );\n\n\t\t\t}\n\n\t\t\tplaneMesh.material.uniforms.t2D.value = background;\n\t\t\tplaneMesh.material.uniforms.backgroundIntensity.value = scene.backgroundIntensity;\n\t\t\tplaneMesh.material.toneMapped = ColorManagement.getTransfer( background.colorSpace ) !== SRGBTransfer;\n\n\t\t\tif ( background.matrixAutoUpdate === true ) {\n\n\t\t\t\tbackground.updateMatrix();\n\n\t\t\t}\n\n\t\t\tplaneMesh.material.uniforms.uvTransform.value.copy( background.matrix );\n\n\t\t\tif ( currentBackground !== background ||\n\t\t\t\tcurrentBackgroundVersion !== background.version ||\n\t\t\t\tcurrentTonemapping !== renderer.toneMapping ) {\n\n\t\t\t\tplaneMesh.material.needsUpdate = true;\n\n\t\t\t\tcurrentBackground = background;\n\t\t\t\tcurrentBackgroundVersion = background.version;\n\t\t\t\tcurrentTonemapping = renderer.toneMapping;\n\n\t\t\t}\n\n\t\t\tplaneMesh.layers.enableAll();\n\n\t\t\t// push to the pre-sorted opaque render list\n\t\t\trenderList.unshift( planeMesh, planeMesh.geometry, planeMesh.material, 0, 0, null );\n\n\t\t}\n\n\t}\n\n\tfunction setClear( color, alpha ) {\n\n\t\tcolor.getRGB( _rgb, getUnlitUniformColorSpace( renderer ) );\n\n\t\tstate.buffers.color.setClear( _rgb.r, _rgb.g, _rgb.b, alpha, premultipliedAlpha );\n\n\t}\n\n\treturn {\n\n\t\tgetClearColor: function () {\n\n\t\t\treturn clearColor;\n\n\t\t},\n\t\tsetClearColor: function ( color, alpha = 1 ) {\n\n\t\t\tclearColor.set( color );\n\t\t\tclearAlpha = alpha;\n\t\t\tsetClear( clearColor, clearAlpha );\n\n\t\t},\n\t\tgetClearAlpha: function () {\n\n\t\t\treturn clearAlpha;\n\n\t\t},\n\t\tsetClearAlpha: function ( alpha ) {\n\n\t\t\tclearAlpha = alpha;\n\t\t\tsetClear( clearColor, clearAlpha );\n\n\t\t},\n\t\trender: render,\n\t\taddToRenderList: addToRenderList\n\n\t};\n\n}\n\nfunction WebGLBindingStates( gl, attributes ) {\n\n\tconst maxVertexAttributes = gl.getParameter( gl.MAX_VERTEX_ATTRIBS );\n\n\tconst bindingStates = {};\n\n\tconst defaultState = createBindingState( null );\n\tlet currentState = defaultState;\n\tlet forceUpdate = false;\n\n\tfunction setup( object, material, program, geometry, index ) {\n\n\t\tlet updateBuffers = false;\n\n\t\tconst state = getBindingState( geometry, program, material );\n\n\t\tif ( currentState !== state ) {\n\n\t\t\tcurrentState = state;\n\t\t\tbindVertexArrayObject( currentState.object );\n\n\t\t}\n\n\t\tupdateBuffers = needsUpdate( object, geometry, program, index );\n\n\t\tif ( updateBuffers ) saveCache( object, geometry, program, index );\n\n\t\tif ( index !== null ) {\n\n\t\t\tattributes.update( index, gl.ELEMENT_ARRAY_BUFFER );\n\n\t\t}\n\n\t\tif ( updateBuffers || forceUpdate ) {\n\n\t\t\tforceUpdate = false;\n\n\t\t\tsetupVertexAttributes( object, material, program, geometry );\n\n\t\t\tif ( index !== null ) {\n\n\t\t\t\tgl.bindBuffer( gl.ELEMENT_ARRAY_BUFFER, attributes.get( index ).buffer );\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\tfunction createVertexArrayObject() {\n\n\t\treturn gl.createVertexArray();\n\n\t}\n\n\tfunction bindVertexArrayObject( vao ) {\n\n\t\treturn gl.bindVertexArray( vao );\n\n\t}\n\n\tfunction deleteVertexArrayObject( vao ) {\n\n\t\treturn gl.deleteVertexArray( vao );\n\n\t}\n\n\tfunction getBindingState( geometry, program, material ) {\n\n\t\tconst wireframe = ( material.wireframe === true );\n\n\t\tlet programMap = bindingStates[ geometry.id ];\n\n\t\tif ( programMap === undefined ) {\n\n\t\t\tprogramMap = {};\n\t\t\tbindingStates[ geometry.id ] = programMap;\n\n\t\t}\n\n\t\tlet stateMap = programMap[ program.id ];\n\n\t\tif ( stateMap === undefined ) {\n\n\t\t\tstateMap = {};\n\t\t\tprogramMap[ program.id ] = stateMap;\n\n\t\t}\n\n\t\tlet state = stateMap[ wireframe ];\n\n\t\tif ( state === undefined ) {\n\n\t\t\tstate = createBindingState( createVertexArrayObject() );\n\t\t\tstateMap[ wireframe ] = state;\n\n\t\t}\n\n\t\treturn state;\n\n\t}\n\n\tfunction createBindingState( vao ) {\n\n\t\tconst newAttributes = [];\n\t\tconst enabledAttributes = [];\n\t\tconst attributeDivisors = [];\n\n\t\tfor ( let i = 0; i < maxVertexAttributes; i ++ ) {\n\n\t\t\tnewAttributes[ i ] = 0;\n\t\t\tenabledAttributes[ i ] = 0;\n\t\t\tattributeDivisors[ i ] = 0;\n\n\t\t}\n\n\t\treturn {\n\n\t\t\t// for backward compatibility on non-VAO support browser\n\t\t\tgeometry: null,\n\t\t\tprogram: null,\n\t\t\twireframe: false,\n\n\t\t\tnewAttributes: newAttributes,\n\t\t\tenabledAttributes: enabledAttributes,\n\t\t\tattributeDivisors: attributeDivisors,\n\t\t\tobject: vao,\n\t\t\tattributes: {},\n\t\t\tindex: null\n\n\t\t};\n\n\t}\n\n\tfunction needsUpdate( object, geometry, program, index ) {\n\n\t\tconst cachedAttributes = currentState.attributes;\n\t\tconst geometryAttributes = geometry.attributes;\n\n\t\tlet attributesNum = 0;\n\n\t\tconst programAttributes = program.getAttributes();\n\n\t\tfor ( const name in programAttributes ) {\n\n\t\t\tconst programAttribute = programAttributes[ name ];\n\n\t\t\tif ( programAttribute.location >= 0 ) {\n\n\t\t\t\tconst cachedAttribute = cachedAttributes[ name ];\n\t\t\t\tlet geometryAttribute = geometryAttributes[ name ];\n\n\t\t\t\tif ( geometryAttribute === undefined ) {\n\n\t\t\t\t\tif ( name === 'instanceMatrix' && object.instanceMatrix ) geometryAttribute = object.instanceMatrix;\n\t\t\t\t\tif ( name === 'instanceColor' && object.instanceColor ) geometryAttribute = object.instanceColor;\n\n\t\t\t\t}\n\n\t\t\t\tif ( cachedAttribute === undefined ) return true;\n\n\t\t\t\tif ( cachedAttribute.attribute !== geometryAttribute ) return true;\n\n\t\t\t\tif ( geometryAttribute && cachedAttribute.data !== geometryAttribute.data ) return true;\n\n\t\t\t\tattributesNum ++;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( currentState.attributesNum !== attributesNum ) return true;\n\n\t\tif ( currentState.index !== index ) return true;\n\n\t\treturn false;\n\n\t}\n\n\tfunction saveCache( object, geometry, program, index ) {\n\n\t\tconst cache = {};\n\t\tconst attributes = geometry.attributes;\n\t\tlet attributesNum = 0;\n\n\t\tconst programAttributes = program.getAttributes();\n\n\t\tfor ( const name in programAttributes ) {\n\n\t\t\tconst programAttribute = programAttributes[ name ];\n\n\t\t\tif ( programAttribute.location >= 0 ) {\n\n\t\t\t\tlet attribute = attributes[ name ];\n\n\t\t\t\tif ( attribute === undefined ) {\n\n\t\t\t\t\tif ( name === 'instanceMatrix' && object.instanceMatrix ) attribute = object.instanceMatrix;\n\t\t\t\t\tif ( name === 'instanceColor' && object.instanceColor ) attribute = object.instanceColor;\n\n\t\t\t\t}\n\n\t\t\t\tconst data = {};\n\t\t\t\tdata.attribute = attribute;\n\n\t\t\t\tif ( attribute && attribute.data ) {\n\n\t\t\t\t\tdata.data = attribute.data;\n\n\t\t\t\t}\n\n\t\t\t\tcache[ name ] = data;\n\n\t\t\t\tattributesNum ++;\n\n\t\t\t}\n\n\t\t}\n\n\t\tcurrentState.attributes = cache;\n\t\tcurrentState.attributesNum = attributesNum;\n\n\t\tcurrentState.index = index;\n\n\t}\n\n\tfunction initAttributes() {\n\n\t\tconst newAttributes = currentState.newAttributes;\n\n\t\tfor ( let i = 0, il = newAttributes.length; i < il; i ++ ) {\n\n\t\t\tnewAttributes[ i ] = 0;\n\n\t\t}\n\n\t}\n\n\tfunction enableAttribute( attribute ) {\n\n\t\tenableAttributeAndDivisor( attribute, 0 );\n\n\t}\n\n\tfunction enableAttributeAndDivisor( attribute, meshPerAttribute ) {\n\n\t\tconst newAttributes = currentState.newAttributes;\n\t\tconst enabledAttributes = currentState.enabledAttributes;\n\t\tconst attributeDivisors = currentState.attributeDivisors;\n\n\t\tnewAttributes[ attribute ] = 1;\n\n\t\tif ( enabledAttributes[ attribute ] === 0 ) {\n\n\t\t\tgl.enableVertexAttribArray( attribute );\n\t\t\tenabledAttributes[ attribute ] = 1;\n\n\t\t}\n\n\t\tif ( attributeDivisors[ attribute ] !== meshPerAttribute ) {\n\n\t\t\tgl.vertexAttribDivisor( attribute, meshPerAttribute );\n\t\t\tattributeDivisors[ attribute ] = meshPerAttribute;\n\n\t\t}\n\n\t}\n\n\tfunction disableUnusedAttributes() {\n\n\t\tconst newAttributes = currentState.newAttributes;\n\t\tconst enabledAttributes = currentState.enabledAttributes;\n\n\t\tfor ( let i = 0, il = enabledAttributes.length; i < il; i ++ ) {\n\n\t\t\tif ( enabledAttributes[ i ] !== newAttributes[ i ] ) {\n\n\t\t\t\tgl.disableVertexAttribArray( i );\n\t\t\t\tenabledAttributes[ i ] = 0;\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\tfunction vertexAttribPointer( index, size, type, normalized, stride, offset, integer ) {\n\n\t\tif ( integer === true ) {\n\n\t\t\tgl.vertexAttribIPointer( index, size, type, stride, offset );\n\n\t\t} else {\n\n\t\t\tgl.vertexAttribPointer( index, size, type, normalized, stride, offset );\n\n\t\t}\n\n\t}\n\n\tfunction setupVertexAttributes( object, material, program, geometry ) {\n\n\t\tinitAttributes();\n\n\t\tconst geometryAttributes = geometry.attributes;\n\n\t\tconst programAttributes = program.getAttributes();\n\n\t\tconst materialDefaultAttributeValues = material.defaultAttributeValues;\n\n\t\tfor ( const name in programAttributes ) {\n\n\t\t\tconst programAttribute = programAttributes[ name ];\n\n\t\t\tif ( programAttribute.location >= 0 ) {\n\n\t\t\t\tlet geometryAttribute = geometryAttributes[ name ];\n\n\t\t\t\tif ( geometryAttribute === undefined ) {\n\n\t\t\t\t\tif ( name === 'instanceMatrix' && object.instanceMatrix ) geometryAttribute = object.instanceMatrix;\n\t\t\t\t\tif ( name === 'instanceColor' && object.instanceColor ) geometryAttribute = object.instanceColor;\n\n\t\t\t\t}\n\n\t\t\t\tif ( geometryAttribute !== undefined ) {\n\n\t\t\t\t\tconst normalized = geometryAttribute.normalized;\n\t\t\t\t\tconst size = geometryAttribute.itemSize;\n\n\t\t\t\t\tconst attribute = attributes.get( geometryAttribute );\n\n\t\t\t\t\t// TODO Attribute may not be available on context restore\n\n\t\t\t\t\tif ( attribute === undefined ) continue;\n\n\t\t\t\t\tconst buffer = attribute.buffer;\n\t\t\t\t\tconst type = attribute.type;\n\t\t\t\t\tconst bytesPerElement = attribute.bytesPerElement;\n\n\t\t\t\t\t// check for integer attributes\n\n\t\t\t\t\tconst integer = ( type === gl.INT || type === gl.UNSIGNED_INT || geometryAttribute.gpuType === IntType );\n\n\t\t\t\t\tif ( geometryAttribute.isInterleavedBufferAttribute ) {\n\n\t\t\t\t\t\tconst data = geometryAttribute.data;\n\t\t\t\t\t\tconst stride = data.stride;\n\t\t\t\t\t\tconst offset = geometryAttribute.offset;\n\n\t\t\t\t\t\tif ( data.isInstancedInterleavedBuffer ) {\n\n\t\t\t\t\t\t\tfor ( let i = 0; i < programAttribute.locationSize; i ++ ) {\n\n\t\t\t\t\t\t\t\tenableAttributeAndDivisor( programAttribute.location + i, data.meshPerAttribute );\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\tif ( object.isInstancedMesh !== true && geometry._maxInstanceCount === undefined ) {\n\n\t\t\t\t\t\t\t\tgeometry._maxInstanceCount = data.meshPerAttribute * data.count;\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\tfor ( let i = 0; i < programAttribute.locationSize; i ++ ) {\n\n\t\t\t\t\t\t\t\tenableAttribute( programAttribute.location + i );\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tgl.bindBuffer( gl.ARRAY_BUFFER, buffer );\n\n\t\t\t\t\t\tfor ( let i = 0; i < programAttribute.locationSize; i ++ ) {\n\n\t\t\t\t\t\t\tvertexAttribPointer(\n\t\t\t\t\t\t\t\tprogramAttribute.location + i,\n\t\t\t\t\t\t\t\tsize / programAttribute.locationSize,\n\t\t\t\t\t\t\t\ttype,\n\t\t\t\t\t\t\t\tnormalized,\n\t\t\t\t\t\t\t\tstride * bytesPerElement,\n\t\t\t\t\t\t\t\t( offset + ( size / programAttribute.locationSize ) * i ) * bytesPerElement,\n\t\t\t\t\t\t\t\tinteger\n\t\t\t\t\t\t\t);\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tif ( geometryAttribute.isInstancedBufferAttribute ) {\n\n\t\t\t\t\t\t\tfor ( let i = 0; i < programAttribute.locationSize; i ++ ) {\n\n\t\t\t\t\t\t\t\tenableAttributeAndDivisor( programAttribute.location + i, geometryAttribute.meshPerAttribute );\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\tif ( object.isInstancedMesh !== true && geometry._maxInstanceCount === undefined ) {\n\n\t\t\t\t\t\t\t\tgeometry._maxInstanceCount = geometryAttribute.meshPerAttribute * geometryAttribute.count;\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\tfor ( let i = 0; i < programAttribute.locationSize; i ++ ) {\n\n\t\t\t\t\t\t\t\tenableAttribute( programAttribute.location + i );\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tgl.bindBuffer( gl.ARRAY_BUFFER, buffer );\n\n\t\t\t\t\t\tfor ( let i = 0; i < programAttribute.locationSize; i ++ ) {\n\n\t\t\t\t\t\t\tvertexAttribPointer(\n\t\t\t\t\t\t\t\tprogramAttribute.location + i,\n\t\t\t\t\t\t\t\tsize / programAttribute.locationSize,\n\t\t\t\t\t\t\t\ttype,\n\t\t\t\t\t\t\t\tnormalized,\n\t\t\t\t\t\t\t\tsize * bytesPerElement,\n\t\t\t\t\t\t\t\t( size / programAttribute.locationSize ) * i * bytesPerElement,\n\t\t\t\t\t\t\t\tinteger\n\t\t\t\t\t\t\t);\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t} else if ( materialDefaultAttributeValues !== undefined ) {\n\n\t\t\t\t\tconst value = materialDefaultAttributeValues[ name ];\n\n\t\t\t\t\tif ( value !== undefined ) {\n\n\t\t\t\t\t\tswitch ( value.length ) {\n\n\t\t\t\t\t\t\tcase 2:\n\t\t\t\t\t\t\t\tgl.vertexAttrib2fv( programAttribute.location, value );\n\t\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\t\tcase 3:\n\t\t\t\t\t\t\t\tgl.vertexAttrib3fv( programAttribute.location, value );\n\t\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\t\tcase 4:\n\t\t\t\t\t\t\t\tgl.vertexAttrib4fv( programAttribute.location, value );\n\t\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\t\tdefault:\n\t\t\t\t\t\t\t\tgl.vertexAttrib1fv( programAttribute.location, value );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tdisableUnusedAttributes();\n\n\t}\n\n\tfunction dispose() {\n\n\t\treset();\n\n\t\tfor ( const geometryId in bindingStates ) {\n\n\t\t\tconst programMap = bindingStates[ geometryId ];\n\n\t\t\tfor ( const programId in programMap ) {\n\n\t\t\t\tconst stateMap = programMap[ programId ];\n\n\t\t\t\tfor ( const wireframe in stateMap ) {\n\n\t\t\t\t\tdeleteVertexArrayObject( stateMap[ wireframe ].object );\n\n\t\t\t\t\tdelete stateMap[ wireframe ];\n\n\t\t\t\t}\n\n\t\t\t\tdelete programMap[ programId ];\n\n\t\t\t}\n\n\t\t\tdelete bindingStates[ geometryId ];\n\n\t\t}\n\n\t}\n\n\tfunction releaseStatesOfGeometry( geometry ) {\n\n\t\tif ( bindingStates[ geometry.id ] === undefined ) return;\n\n\t\tconst programMap = bindingStates[ geometry.id ];\n\n\t\tfor ( const programId in programMap ) {\n\n\t\t\tconst stateMap = programMap[ programId ];\n\n\t\t\tfor ( const wireframe in stateMap ) {\n\n\t\t\t\tdeleteVertexArrayObject( stateMap[ wireframe ].object );\n\n\t\t\t\tdelete stateMap[ wireframe ];\n\n\t\t\t}\n\n\t\t\tdelete programMap[ programId ];\n\n\t\t}\n\n\t\tdelete bindingStates[ geometry.id ];\n\n\t}\n\n\tfunction releaseStatesOfProgram( program ) {\n\n\t\tfor ( const geometryId in bindingStates ) {\n\n\t\t\tconst programMap = bindingStates[ geometryId ];\n\n\t\t\tif ( programMap[ program.id ] === undefined ) continue;\n\n\t\t\tconst stateMap = programMap[ program.id ];\n\n\t\t\tfor ( const wireframe in stateMap ) {\n\n\t\t\t\tdeleteVertexArrayObject( stateMap[ wireframe ].object );\n\n\t\t\t\tdelete stateMap[ wireframe ];\n\n\t\t\t}\n\n\t\t\tdelete programMap[ program.id ];\n\n\t\t}\n\n\t}\n\n\tfunction reset() {\n\n\t\tresetDefaultState();\n\t\tforceUpdate = true;\n\n\t\tif ( currentState === defaultState ) return;\n\n\t\tcurrentState = defaultState;\n\t\tbindVertexArrayObject( currentState.object );\n\n\t}\n\n\t// for backward-compatibility\n\n\tfunction resetDefaultState() {\n\n\t\tdefaultState.geometry = null;\n\t\tdefaultState.program = null;\n\t\tdefaultState.wireframe = false;\n\n\t}\n\n\treturn {\n\n\t\tsetup: setup,\n\t\treset: reset,\n\t\tresetDefaultState: resetDefaultState,\n\t\tdispose: dispose,\n\t\treleaseStatesOfGeometry: releaseStatesOfGeometry,\n\t\treleaseStatesOfProgram: releaseStatesOfProgram,\n\n\t\tinitAttributes: initAttributes,\n\t\tenableAttribute: enableAttribute,\n\t\tdisableUnusedAttributes: disableUnusedAttributes\n\n\t};\n\n}\n\nfunction WebGLBufferRenderer( gl, extensions, info ) {\n\n\tlet mode;\n\n\tfunction setMode( value ) {\n\n\t\tmode = value;\n\n\t}\n\n\tfunction render( start, count ) {\n\n\t\tgl.drawArrays( mode, start, count );\n\n\t\tinfo.update( count, mode, 1 );\n\n\t}\n\n\tfunction renderInstances( start, count, primcount ) {\n\n\t\tif ( primcount === 0 ) return;\n\n\t\tgl.drawArraysInstanced( mode, start, count, primcount );\n\n\t\tinfo.update( count, mode, primcount );\n\n\t}\n\n\tfunction renderMultiDraw( starts, counts, drawCount ) {\n\n\t\tif ( drawCount === 0 ) return;\n\n\t\tconst extension = extensions.get( 'WEBGL_multi_draw' );\n\n\t\tif ( extension === null ) {\n\n\t\t\tfor ( let i = 0; i < drawCount; i ++ ) {\n\n\t\t\t\tthis.render( starts[ i ], counts[ i ] );\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\textension.multiDrawArraysWEBGL( mode, starts, 0, counts, 0, drawCount );\n\n\t\t\tlet elementCount = 0;\n\t\t\tfor ( let i = 0; i < drawCount; i ++ ) {\n\n\t\t\t\telementCount += counts[ i ];\n\n\t\t\t}\n\n\t\t\tinfo.update( elementCount, mode, 1 );\n\n\t\t}\n\n\t}\n\n\tfunction renderMultiDrawInstances( starts, counts, drawCount, primcount ) {\n\n\t\tif ( drawCount === 0 ) return;\n\n\t\tconst extension = extensions.get( 'WEBGL_multi_draw' );\n\n\t\tif ( extension === null ) {\n\n\t\t\tfor ( let i = 0; i < starts.length; i ++ ) {\n\n\t\t\t\trenderInstances( starts[ i ], counts[ i ], primcount[ i ] );\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\textension.multiDrawArraysInstancedWEBGL( mode, starts, 0, counts, 0, primcount, 0, drawCount );\n\n\t\t\tlet elementCount = 0;\n\t\t\tfor ( let i = 0; i < drawCount; i ++ ) {\n\n\t\t\t\telementCount += counts[ i ];\n\n\t\t\t}\n\n\t\t\tfor ( let i = 0; i < primcount.length; i ++ ) {\n\n\t\t\t\tinfo.update( elementCount, mode, primcount[ i ] );\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\t//\n\n\tthis.setMode = setMode;\n\tthis.render = render;\n\tthis.renderInstances = renderInstances;\n\tthis.renderMultiDraw = renderMultiDraw;\n\tthis.renderMultiDrawInstances = renderMultiDrawInstances;\n\n}\n\nfunction WebGLCapabilities( gl, extensions, parameters, utils ) {\n\n\tlet maxAnisotropy;\n\n\tfunction getMaxAnisotropy() {\n\n\t\tif ( maxAnisotropy !== undefined ) return maxAnisotropy;\n\n\t\tif ( extensions.has( 'EXT_texture_filter_anisotropic' ) === true ) {\n\n\t\t\tconst extension = extensions.get( 'EXT_texture_filter_anisotropic' );\n\n\t\t\tmaxAnisotropy = gl.getParameter( extension.MAX_TEXTURE_MAX_ANISOTROPY_EXT );\n\n\t\t} else {\n\n\t\t\tmaxAnisotropy = 0;\n\n\t\t}\n\n\t\treturn maxAnisotropy;\n\n\t}\n\n\tfunction textureFormatReadable( textureFormat ) {\n\n\t\tif ( textureFormat !== RGBAFormat && utils.convert( textureFormat ) !== gl.getParameter( gl.IMPLEMENTATION_COLOR_READ_FORMAT ) ) {\n\n\t\t\treturn false;\n\n\t\t}\n\n\t\treturn true;\n\n\t}\n\n\tfunction textureTypeReadable( textureType ) {\n\n\t\tconst halfFloatSupportedByExt = ( textureType === HalfFloatType ) && ( extensions.has( 'EXT_color_buffer_half_float' ) || extensions.has( 'EXT_color_buffer_float' ) );\n\n\t\tif ( textureType !== UnsignedByteType && utils.convert( textureType ) !== gl.getParameter( gl.IMPLEMENTATION_COLOR_READ_TYPE ) && // Edge and Chrome Mac < 52 (#9513)\n\t\t\ttextureType !== FloatType && ! halfFloatSupportedByExt ) {\n\n\t\t\treturn false;\n\n\t\t}\n\n\t\treturn true;\n\n\t}\n\n\tfunction getMaxPrecision( precision ) {\n\n\t\tif ( precision === 'highp' ) {\n\n\t\t\tif ( gl.getShaderPrecisionFormat( gl.VERTEX_SHADER, gl.HIGH_FLOAT ).precision > 0 &&\n\t\t\t\tgl.getShaderPrecisionFormat( gl.FRAGMENT_SHADER, gl.HIGH_FLOAT ).precision > 0 ) {\n\n\t\t\t\treturn 'highp';\n\n\t\t\t}\n\n\t\t\tprecision = 'mediump';\n\n\t\t}\n\n\t\tif ( precision === 'mediump' ) {\n\n\t\t\tif ( gl.getShaderPrecisionFormat( gl.VERTEX_SHADER, gl.MEDIUM_FLOAT ).precision > 0 &&\n\t\t\t\tgl.getShaderPrecisionFormat( gl.FRAGMENT_SHADER, gl.MEDIUM_FLOAT ).precision > 0 ) {\n\n\t\t\t\treturn 'mediump';\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn 'lowp';\n\n\t}\n\n\tlet precision = parameters.precision !== undefined ? parameters.precision : 'highp';\n\tconst maxPrecision = getMaxPrecision( precision );\n\n\tif ( maxPrecision !== precision ) {\n\n\t\tconsole.warn( 'THREE.WebGLRenderer:', precision, 'not supported, using', maxPrecision, 'instead.' );\n\t\tprecision = maxPrecision;\n\n\t}\n\n\tconst logarithmicDepthBuffer = parameters.logarithmicDepthBuffer === true;\n\n\tconst maxTextures = gl.getParameter( gl.MAX_TEXTURE_IMAGE_UNITS );\n\tconst maxVertexTextures = gl.getParameter( gl.MAX_VERTEX_TEXTURE_IMAGE_UNITS );\n\tconst maxTextureSize = gl.getParameter( gl.MAX_TEXTURE_SIZE );\n\tconst maxCubemapSize = gl.getParameter( gl.MAX_CUBE_MAP_TEXTURE_SIZE );\n\n\tconst maxAttributes = gl.getParameter( gl.MAX_VERTEX_ATTRIBS );\n\tconst maxVertexUniforms = gl.getParameter( gl.MAX_VERTEX_UNIFORM_VECTORS );\n\tconst maxVaryings = gl.getParameter( gl.MAX_VARYING_VECTORS );\n\tconst maxFragmentUniforms = gl.getParameter( gl.MAX_FRAGMENT_UNIFORM_VECTORS );\n\n\tconst vertexTextures = maxVertexTextures > 0;\n\n\tconst maxSamples = gl.getParameter( gl.MAX_SAMPLES );\n\n\treturn {\n\n\t\tisWebGL2: true, // keeping this for backwards compatibility\n\n\t\tgetMaxAnisotropy: getMaxAnisotropy,\n\t\tgetMaxPrecision: getMaxPrecision,\n\n\t\ttextureFormatReadable: textureFormatReadable,\n\t\ttextureTypeReadable: textureTypeReadable,\n\n\t\tprecision: precision,\n\t\tlogarithmicDepthBuffer: logarithmicDepthBuffer,\n\n\t\tmaxTextures: maxTextures,\n\t\tmaxVertexTextures: maxVertexTextures,\n\t\tmaxTextureSize: maxTextureSize,\n\t\tmaxCubemapSize: maxCubemapSize,\n\n\t\tmaxAttributes: maxAttributes,\n\t\tmaxVertexUniforms: maxVertexUniforms,\n\t\tmaxVaryings: maxVaryings,\n\t\tmaxFragmentUniforms: maxFragmentUniforms,\n\n\t\tvertexTextures: vertexTextures,\n\n\t\tmaxSamples: maxSamples\n\n\t};\n\n}\n\nfunction WebGLClipping( properties ) {\n\n\tconst scope = this;\n\n\tlet globalState = null,\n\t\tnumGlobalPlanes = 0,\n\t\tlocalClippingEnabled = false,\n\t\trenderingShadows = false;\n\n\tconst plane = new Plane(),\n\t\tviewNormalMatrix = new Matrix3(),\n\n\t\tuniform = { value: null, needsUpdate: false };\n\n\tthis.uniform = uniform;\n\tthis.numPlanes = 0;\n\tthis.numIntersection = 0;\n\n\tthis.init = function ( planes, enableLocalClipping ) {\n\n\t\tconst enabled =\n\t\t\tplanes.length !== 0 ||\n\t\t\tenableLocalClipping ||\n\t\t\t// enable state of previous frame - the clipping code has to\n\t\t\t// run another frame in order to reset the state:\n\t\t\tnumGlobalPlanes !== 0 ||\n\t\t\tlocalClippingEnabled;\n\n\t\tlocalClippingEnabled = enableLocalClipping;\n\n\t\tnumGlobalPlanes = planes.length;\n\n\t\treturn enabled;\n\n\t};\n\n\tthis.beginShadows = function () {\n\n\t\trenderingShadows = true;\n\t\tprojectPlanes( null );\n\n\t};\n\n\tthis.endShadows = function () {\n\n\t\trenderingShadows = false;\n\n\t};\n\n\tthis.setGlobalState = function ( planes, camera ) {\n\n\t\tglobalState = projectPlanes( planes, camera, 0 );\n\n\t};\n\n\tthis.setState = function ( material, camera, useCache ) {\n\n\t\tconst planes = material.clippingPlanes,\n\t\t\tclipIntersection = material.clipIntersection,\n\t\t\tclipShadows = material.clipShadows;\n\n\t\tconst materialProperties = properties.get( material );\n\n\t\tif ( ! localClippingEnabled || planes === null || planes.length === 0 || renderingShadows && ! clipShadows ) {\n\n\t\t\t// there's no local clipping\n\n\t\t\tif ( renderingShadows ) {\n\n\t\t\t\t// there's no global clipping\n\n\t\t\t\tprojectPlanes( null );\n\n\t\t\t} else {\n\n\t\t\t\tresetGlobalState();\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tconst nGlobal = renderingShadows ? 0 : numGlobalPlanes,\n\t\t\t\tlGlobal = nGlobal * 4;\n\n\t\t\tlet dstArray = materialProperties.clippingState || null;\n\n\t\t\tuniform.value = dstArray; // ensure unique state\n\n\t\t\tdstArray = projectPlanes( planes, camera, lGlobal, useCache );\n\n\t\t\tfor ( let i = 0; i !== lGlobal; ++ i ) {\n\n\t\t\t\tdstArray[ i ] = globalState[ i ];\n\n\t\t\t}\n\n\t\t\tmaterialProperties.clippingState = dstArray;\n\t\t\tthis.numIntersection = clipIntersection ? this.numPlanes : 0;\n\t\t\tthis.numPlanes += nGlobal;\n\n\t\t}\n\n\n\t};\n\n\tfunction resetGlobalState() {\n\n\t\tif ( uniform.value !== globalState ) {\n\n\t\t\tuniform.value = globalState;\n\t\t\tuniform.needsUpdate = numGlobalPlanes > 0;\n\n\t\t}\n\n\t\tscope.numPlanes = numGlobalPlanes;\n\t\tscope.numIntersection = 0;\n\n\t}\n\n\tfunction projectPlanes( planes, camera, dstOffset, skipTransform ) {\n\n\t\tconst nPlanes = planes !== null ? planes.length : 0;\n\t\tlet dstArray = null;\n\n\t\tif ( nPlanes !== 0 ) {\n\n\t\t\tdstArray = uniform.value;\n\n\t\t\tif ( skipTransform !== true || dstArray === null ) {\n\n\t\t\t\tconst flatSize = dstOffset + nPlanes * 4,\n\t\t\t\t\tviewMatrix = camera.matrixWorldInverse;\n\n\t\t\t\tviewNormalMatrix.getNormalMatrix( viewMatrix );\n\n\t\t\t\tif ( dstArray === null || dstArray.length < flatSize ) {\n\n\t\t\t\t\tdstArray = new Float32Array( flatSize );\n\n\t\t\t\t}\n\n\t\t\t\tfor ( let i = 0, i4 = dstOffset; i !== nPlanes; ++ i, i4 += 4 ) {\n\n\t\t\t\t\tplane.copy( planes[ i ] ).applyMatrix4( viewMatrix, viewNormalMatrix );\n\n\t\t\t\t\tplane.normal.toArray( dstArray, i4 );\n\t\t\t\t\tdstArray[ i4 + 3 ] = plane.constant;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tuniform.value = dstArray;\n\t\t\tuniform.needsUpdate = true;\n\n\t\t}\n\n\t\tscope.numPlanes = nPlanes;\n\t\tscope.numIntersection = 0;\n\n\t\treturn dstArray;\n\n\t}\n\n}\n\nfunction WebGLCubeMaps( renderer ) {\n\n\tlet cubemaps = new WeakMap();\n\n\tfunction mapTextureMapping( texture, mapping ) {\n\n\t\tif ( mapping === EquirectangularReflectionMapping ) {\n\n\t\t\ttexture.mapping = CubeReflectionMapping;\n\n\t\t} else if ( mapping === EquirectangularRefractionMapping ) {\n\n\t\t\ttexture.mapping = CubeRefractionMapping;\n\n\t\t}\n\n\t\treturn texture;\n\n\t}\n\n\tfunction get( texture ) {\n\n\t\tif ( texture && texture.isTexture ) {\n\n\t\t\tconst mapping = texture.mapping;\n\n\t\t\tif ( mapping === EquirectangularReflectionMapping || mapping === EquirectangularRefractionMapping ) {\n\n\t\t\t\tif ( cubemaps.has( texture ) ) {\n\n\t\t\t\t\tconst cubemap = cubemaps.get( texture ).texture;\n\t\t\t\t\treturn mapTextureMapping( cubemap, texture.mapping );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tconst image = texture.image;\n\n\t\t\t\t\tif ( image && image.height > 0 ) {\n\n\t\t\t\t\t\tconst renderTarget = new WebGLCubeRenderTarget( image.height );\n\t\t\t\t\t\trenderTarget.fromEquirectangularTexture( renderer, texture );\n\t\t\t\t\t\tcubemaps.set( texture, renderTarget );\n\n\t\t\t\t\t\ttexture.addEventListener( 'dispose', onTextureDispose );\n\n\t\t\t\t\t\treturn mapTextureMapping( renderTarget.texture, texture.mapping );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\t// image not yet ready. try the conversion next frame\n\n\t\t\t\t\t\treturn null;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn texture;\n\n\t}\n\n\tfunction onTextureDispose( event ) {\n\n\t\tconst texture = event.target;\n\n\t\ttexture.removeEventListener( 'dispose', onTextureDispose );\n\n\t\tconst cubemap = cubemaps.get( texture );\n\n\t\tif ( cubemap !== undefined ) {\n\n\t\t\tcubemaps.delete( texture );\n\t\t\tcubemap.dispose();\n\n\t\t}\n\n\t}\n\n\tfunction dispose() {\n\n\t\tcubemaps = new WeakMap();\n\n\t}\n\n\treturn {\n\t\tget: get,\n\t\tdispose: dispose\n\t};\n\n}\n\nclass OrthographicCamera extends Camera {\n\n\tconstructor( left = - 1, right = 1, top = 1, bottom = - 1, near = 0.1, far = 2000 ) {\n\n\t\tsuper();\n\n\t\tthis.isOrthographicCamera = true;\n\n\t\tthis.type = 'OrthographicCamera';\n\n\t\tthis.zoom = 1;\n\t\tthis.view = null;\n\n\t\tthis.left = left;\n\t\tthis.right = right;\n\t\tthis.top = top;\n\t\tthis.bottom = bottom;\n\n\t\tthis.near = near;\n\t\tthis.far = far;\n\n\t\tthis.updateProjectionMatrix();\n\n\t}\n\n\tcopy( source, recursive ) {\n\n\t\tsuper.copy( source, recursive );\n\n\t\tthis.left = source.left;\n\t\tthis.right = source.right;\n\t\tthis.top = source.top;\n\t\tthis.bottom = source.bottom;\n\t\tthis.near = source.near;\n\t\tthis.far = source.far;\n\n\t\tthis.zoom = source.zoom;\n\t\tthis.view = source.view === null ? null : Object.assign( {}, source.view );\n\n\t\treturn this;\n\n\t}\n\n\tsetViewOffset( fullWidth, fullHeight, x, y, width, height ) {\n\n\t\tif ( this.view === null ) {\n\n\t\t\tthis.view = {\n\t\t\t\tenabled: true,\n\t\t\t\tfullWidth: 1,\n\t\t\t\tfullHeight: 1,\n\t\t\t\toffsetX: 0,\n\t\t\t\toffsetY: 0,\n\t\t\t\twidth: 1,\n\t\t\t\theight: 1\n\t\t\t};\n\n\t\t}\n\n\t\tthis.view.enabled = true;\n\t\tthis.view.fullWidth = fullWidth;\n\t\tthis.view.fullHeight = fullHeight;\n\t\tthis.view.offsetX = x;\n\t\tthis.view.offsetY = y;\n\t\tthis.view.width = width;\n\t\tthis.view.height = height;\n\n\t\tthis.updateProjectionMatrix();\n\n\t}\n\n\tclearViewOffset() {\n\n\t\tif ( this.view !== null ) {\n\n\t\t\tthis.view.enabled = false;\n\n\t\t}\n\n\t\tthis.updateProjectionMatrix();\n\n\t}\n\n\tupdateProjectionMatrix() {\n\n\t\tconst dx = ( this.right - this.left ) / ( 2 * this.zoom );\n\t\tconst dy = ( this.top - this.bottom ) / ( 2 * this.zoom );\n\t\tconst cx = ( this.right + this.left ) / 2;\n\t\tconst cy = ( this.top + this.bottom ) / 2;\n\n\t\tlet left = cx - dx;\n\t\tlet right = cx + dx;\n\t\tlet top = cy + dy;\n\t\tlet bottom = cy - dy;\n\n\t\tif ( this.view !== null && this.view.enabled ) {\n\n\t\t\tconst scaleW = ( this.right - this.left ) / this.view.fullWidth / this.zoom;\n\t\t\tconst scaleH = ( this.top - this.bottom ) / this.view.fullHeight / this.zoom;\n\n\t\t\tleft += scaleW * this.view.offsetX;\n\t\t\tright = left + scaleW * this.view.width;\n\t\t\ttop -= scaleH * this.view.offsetY;\n\t\t\tbottom = top - scaleH * this.view.height;\n\n\t\t}\n\n\t\tthis.projectionMatrix.makeOrthographic( left, right, top, bottom, this.near, this.far, this.coordinateSystem );\n\n\t\tthis.projectionMatrixInverse.copy( this.projectionMatrix ).invert();\n\n\t}\n\n\ttoJSON( meta ) {\n\n\t\tconst data = super.toJSON( meta );\n\n\t\tdata.object.zoom = this.zoom;\n\t\tdata.object.left = this.left;\n\t\tdata.object.right = this.right;\n\t\tdata.object.top = this.top;\n\t\tdata.object.bottom = this.bottom;\n\t\tdata.object.near = this.near;\n\t\tdata.object.far = this.far;\n\n\t\tif ( this.view !== null ) data.object.view = Object.assign( {}, this.view );\n\n\t\treturn data;\n\n\t}\n\n}\n\nconst LOD_MIN = 4;\n\n// The standard deviations (radians) associated with the extra mips. These are\n// chosen to approximate a Trowbridge-Reitz distribution function times the\n// geometric shadowing function. These sigma values squared must match the\n// variance #defines in cube_uv_reflection_fragment.glsl.js.\nconst EXTRA_LOD_SIGMA = [ 0.125, 0.215, 0.35, 0.446, 0.526, 0.582 ];\n\n// The maximum length of the blur for loop. Smaller sigmas will use fewer\n// samples and exit early, but not recompile the shader.\nconst MAX_SAMPLES = 20;\n\nconst _flatCamera = /*@__PURE__*/ new OrthographicCamera();\nconst _clearColor = /*@__PURE__*/ new Color();\nlet _oldTarget = null;\nlet _oldActiveCubeFace = 0;\nlet _oldActiveMipmapLevel = 0;\nlet _oldXrEnabled = false;\n\n// Golden Ratio\nconst PHI = ( 1 + Math.sqrt( 5 ) ) / 2;\nconst INV_PHI = 1 / PHI;\n\n// Vertices of a dodecahedron (except the opposites, which represent the\n// same axis), used as axis directions evenly spread on a sphere.\nconst _axisDirections = [\n\t/*@__PURE__*/ new Vector3( - PHI, INV_PHI, 0 ),\n\t/*@__PURE__*/ new Vector3( PHI, INV_PHI, 0 ),\n\t/*@__PURE__*/ new Vector3( - INV_PHI, 0, PHI ),\n\t/*@__PURE__*/ new Vector3( INV_PHI, 0, PHI ),\n\t/*@__PURE__*/ new Vector3( 0, PHI, - INV_PHI ),\n\t/*@__PURE__*/ new Vector3( 0, PHI, INV_PHI ),\n\t/*@__PURE__*/ new Vector3( - 1, 1, - 1 ),\n\t/*@__PURE__*/ new Vector3( 1, 1, - 1 ),\n\t/*@__PURE__*/ new Vector3( - 1, 1, 1 ),\n\t/*@__PURE__*/ new Vector3( 1, 1, 1 ) ];\n\n/**\n * This class generates a Prefiltered, Mipmapped Radiance Environment Map\n * (PMREM) from a cubeMap environment texture. This allows different levels of\n * blur to be quickly accessed based on material roughness. It is packed into a\n * special CubeUV format that allows us to perform custom interpolation so that\n * we can support nonlinear formats such as RGBE. Unlike a traditional mipmap\n * chain, it only goes down to the LOD_MIN level (above), and then creates extra\n * even more filtered 'mips' at the same LOD_MIN resolution, associated with\n * higher roughness levels. In this way we maintain resolution to smoothly\n * interpolate diffuse lighting while limiting sampling computation.\n *\n * Paper: Fast, Accurate Image-Based Lighting\n * https://drive.google.com/file/d/15y8r_UpKlU9SvV4ILb0C3qCPecS8pvLz/view\n*/\n\nclass PMREMGenerator {\n\n\tconstructor( renderer ) {\n\n\t\tthis._renderer = renderer;\n\t\tthis._pingPongRenderTarget = null;\n\n\t\tthis._lodMax = 0;\n\t\tthis._cubeSize = 0;\n\t\tthis._lodPlanes = [];\n\t\tthis._sizeLods = [];\n\t\tthis._sigmas = [];\n\n\t\tthis._blurMaterial = null;\n\t\tthis._cubemapMaterial = null;\n\t\tthis._equirectMaterial = null;\n\n\t\tthis._compileMaterial( this._blurMaterial );\n\n\t}\n\n\t/**\n\t * Generates a PMREM from a supplied Scene, which can be faster than using an\n\t * image if networking bandwidth is low. Optional sigma specifies a blur radius\n\t * in radians to be applied to the scene before PMREM generation. Optional near\n\t * and far planes ensure the scene is rendered in its entirety (the cubeCamera\n\t * is placed at the origin).\n\t */\n\tfromScene( scene, sigma = 0, near = 0.1, far = 100 ) {\n\n\t\t_oldTarget = this._renderer.getRenderTarget();\n\t\t_oldActiveCubeFace = this._renderer.getActiveCubeFace();\n\t\t_oldActiveMipmapLevel = this._renderer.getActiveMipmapLevel();\n\t\t_oldXrEnabled = this._renderer.xr.enabled;\n\n\t\tthis._renderer.xr.enabled = false;\n\n\t\tthis._setSize( 256 );\n\n\t\tconst cubeUVRenderTarget = this._allocateTargets();\n\t\tcubeUVRenderTarget.depthBuffer = true;\n\n\t\tthis._sceneToCubeUV( scene, near, far, cubeUVRenderTarget );\n\n\t\tif ( sigma > 0 ) {\n\n\t\t\tthis._blur( cubeUVRenderTarget, 0, 0, sigma );\n\n\t\t}\n\n\t\tthis._applyPMREM( cubeUVRenderTarget );\n\t\tthis._cleanup( cubeUVRenderTarget );\n\n\t\treturn cubeUVRenderTarget;\n\n\t}\n\n\t/**\n\t * Generates a PMREM from an equirectangular texture, which can be either LDR\n\t * or HDR. The ideal input image size is 1k (1024 x 512),\n\t * as this matches best with the 256 x 256 cubemap output.\n\t * The smallest supported equirectangular image size is 64 x 32.\n\t */\n\tfromEquirectangular( equirectangular, renderTarget = null ) {\n\n\t\treturn this._fromTexture( equirectangular, renderTarget );\n\n\t}\n\n\t/**\n\t * Generates a PMREM from an cubemap texture, which can be either LDR\n\t * or HDR. The ideal input cube size is 256 x 256,\n\t * as this matches best with the 256 x 256 cubemap output.\n\t * The smallest supported cube size is 16 x 16.\n\t */\n\tfromCubemap( cubemap, renderTarget = null ) {\n\n\t\treturn this._fromTexture( cubemap, renderTarget );\n\n\t}\n\n\t/**\n\t * Pre-compiles the cubemap shader. You can get faster start-up by invoking this method during\n\t * your texture's network fetch for increased concurrency.\n\t */\n\tcompileCubemapShader() {\n\n\t\tif ( this._cubemapMaterial === null ) {\n\n\t\t\tthis._cubemapMaterial = _getCubemapMaterial();\n\t\t\tthis._compileMaterial( this._cubemapMaterial );\n\n\t\t}\n\n\t}\n\n\t/**\n\t * Pre-compiles the equirectangular shader. You can get faster start-up by invoking this method during\n\t * your texture's network fetch for increased concurrency.\n\t */\n\tcompileEquirectangularShader() {\n\n\t\tif ( this._equirectMaterial === null ) {\n\n\t\t\tthis._equirectMaterial = _getEquirectMaterial();\n\t\t\tthis._compileMaterial( this._equirectMaterial );\n\n\t\t}\n\n\t}\n\n\t/**\n\t * Disposes of the PMREMGenerator's internal memory. Note that PMREMGenerator is a static class,\n\t * so you should not need more than one PMREMGenerator object. If you do, calling dispose() on\n\t * one of them will cause any others to also become unusable.\n\t */\n\tdispose() {\n\n\t\tthis._dispose();\n\n\t\tif ( this._cubemapMaterial !== null ) this._cubemapMaterial.dispose();\n\t\tif ( this._equirectMaterial !== null ) this._equirectMaterial.dispose();\n\n\t}\n\n\t// private interface\n\n\t_setSize( cubeSize ) {\n\n\t\tthis._lodMax = Math.floor( Math.log2( cubeSize ) );\n\t\tthis._cubeSize = Math.pow( 2, this._lodMax );\n\n\t}\n\n\t_dispose() {\n\n\t\tif ( this._blurMaterial !== null ) this._blurMaterial.dispose();\n\n\t\tif ( this._pingPongRenderTarget !== null ) this._pingPongRenderTarget.dispose();\n\n\t\tfor ( let i = 0; i < this._lodPlanes.length; i ++ ) {\n\n\t\t\tthis._lodPlanes[ i ].dispose();\n\n\t\t}\n\n\t}\n\n\t_cleanup( outputTarget ) {\n\n\t\tthis._renderer.setRenderTarget( _oldTarget, _oldActiveCubeFace, _oldActiveMipmapLevel );\n\t\tthis._renderer.xr.enabled = _oldXrEnabled;\n\n\t\toutputTarget.scissorTest = false;\n\t\t_setViewport( outputTarget, 0, 0, outputTarget.width, outputTarget.height );\n\n\t}\n\n\t_fromTexture( texture, renderTarget ) {\n\n\t\tif ( texture.mapping === CubeReflectionMapping || texture.mapping === CubeRefractionMapping ) {\n\n\t\t\tthis._setSize( texture.image.length === 0 ? 16 : ( texture.image[ 0 ].width || texture.image[ 0 ].image.width ) );\n\n\t\t} else { // Equirectangular\n\n\t\t\tthis._setSize( texture.image.width / 4 );\n\n\t\t}\n\n\t\t_oldTarget = this._renderer.getRenderTarget();\n\t\t_oldActiveCubeFace = this._renderer.getActiveCubeFace();\n\t\t_oldActiveMipmapLevel = this._renderer.getActiveMipmapLevel();\n\t\t_oldXrEnabled = this._renderer.xr.enabled;\n\n\t\tthis._renderer.xr.enabled = false;\n\n\t\tconst cubeUVRenderTarget = renderTarget || this._allocateTargets();\n\t\tthis._textureToCubeUV( texture, cubeUVRenderTarget );\n\t\tthis._applyPMREM( cubeUVRenderTarget );\n\t\tthis._cleanup( cubeUVRenderTarget );\n\n\t\treturn cubeUVRenderTarget;\n\n\t}\n\n\t_allocateTargets() {\n\n\t\tconst width = 3 * Math.max( this._cubeSize, 16 * 7 );\n\t\tconst height = 4 * this._cubeSize;\n\n\t\tconst params = {\n\t\t\tmagFilter: LinearFilter,\n\t\t\tminFilter: LinearFilter,\n\t\t\tgenerateMipmaps: false,\n\t\t\ttype: HalfFloatType,\n\t\t\tformat: RGBAFormat,\n\t\t\tcolorSpace: LinearSRGBColorSpace,\n\t\t\tdepthBuffer: false\n\t\t};\n\n\t\tconst cubeUVRenderTarget = _createRenderTarget( width, height, params );\n\n\t\tif ( this._pingPongRenderTarget === null || this._pingPongRenderTarget.width !== width || this._pingPongRenderTarget.height !== height ) {\n\n\t\t\tif ( this._pingPongRenderTarget !== null ) {\n\n\t\t\t\tthis._dispose();\n\n\t\t\t}\n\n\t\t\tthis._pingPongRenderTarget = _createRenderTarget( width, height, params );\n\n\t\t\tconst { _lodMax } = this;\n\t\t\t( { sizeLods: this._sizeLods, lodPlanes: this._lodPlanes, sigmas: this._sigmas } = _createPlanes( _lodMax ) );\n\n\t\t\tthis._blurMaterial = _getBlurShader( _lodMax, width, height );\n\n\t\t}\n\n\t\treturn cubeUVRenderTarget;\n\n\t}\n\n\t_compileMaterial( material ) {\n\n\t\tconst tmpMesh = new Mesh( this._lodPlanes[ 0 ], material );\n\t\tthis._renderer.compile( tmpMesh, _flatCamera );\n\n\t}\n\n\t_sceneToCubeUV( scene, near, far, cubeUVRenderTarget ) {\n\n\t\tconst fov = 90;\n\t\tconst aspect = 1;\n\t\tconst cubeCamera = new PerspectiveCamera( fov, aspect, near, far );\n\t\tconst upSign = [ 1, - 1, 1, 1, 1, 1 ];\n\t\tconst forwardSign = [ 1, 1, 1, - 1, - 1, - 1 ];\n\t\tconst renderer = this._renderer;\n\n\t\tconst originalAutoClear = renderer.autoClear;\n\t\tconst toneMapping = renderer.toneMapping;\n\t\trenderer.getClearColor( _clearColor );\n\n\t\trenderer.toneMapping = NoToneMapping;\n\t\trenderer.autoClear = false;\n\n\t\tconst backgroundMaterial = new MeshBasicMaterial( {\n\t\t\tname: 'PMREM.Background',\n\t\t\tside: BackSide,\n\t\t\tdepthWrite: false,\n\t\t\tdepthTest: false,\n\t\t} );\n\n\t\tconst backgroundBox = new Mesh( new BoxGeometry(), backgroundMaterial );\n\n\t\tlet useSolidColor = false;\n\t\tconst background = scene.background;\n\n\t\tif ( background ) {\n\n\t\t\tif ( background.isColor ) {\n\n\t\t\t\tbackgroundMaterial.color.copy( background );\n\t\t\t\tscene.background = null;\n\t\t\t\tuseSolidColor = true;\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tbackgroundMaterial.color.copy( _clearColor );\n\t\t\tuseSolidColor = true;\n\n\t\t}\n\n\t\tfor ( let i = 0; i < 6; i ++ ) {\n\n\t\t\tconst col = i % 3;\n\n\t\t\tif ( col === 0 ) {\n\n\t\t\t\tcubeCamera.up.set( 0, upSign[ i ], 0 );\n\t\t\t\tcubeCamera.lookAt( forwardSign[ i ], 0, 0 );\n\n\t\t\t} else if ( col === 1 ) {\n\n\t\t\t\tcubeCamera.up.set( 0, 0, upSign[ i ] );\n\t\t\t\tcubeCamera.lookAt( 0, forwardSign[ i ], 0 );\n\n\t\t\t} else {\n\n\t\t\t\tcubeCamera.up.set( 0, upSign[ i ], 0 );\n\t\t\t\tcubeCamera.lookAt( 0, 0, forwardSign[ i ] );\n\n\t\t\t}\n\n\t\t\tconst size = this._cubeSize;\n\n\t\t\t_setViewport( cubeUVRenderTarget, col * size, i > 2 ? size : 0, size, size );\n\n\t\t\trenderer.setRenderTarget( cubeUVRenderTarget );\n\n\t\t\tif ( useSolidColor ) {\n\n\t\t\t\trenderer.render( backgroundBox, cubeCamera );\n\n\t\t\t}\n\n\t\t\trenderer.render( scene, cubeCamera );\n\n\t\t}\n\n\t\tbackgroundBox.geometry.dispose();\n\t\tbackgroundBox.material.dispose();\n\n\t\trenderer.toneMapping = toneMapping;\n\t\trenderer.autoClear = originalAutoClear;\n\t\tscene.background = background;\n\n\t}\n\n\t_textureToCubeUV( texture, cubeUVRenderTarget ) {\n\n\t\tconst renderer = this._renderer;\n\n\t\tconst isCubeTexture = ( texture.mapping === CubeReflectionMapping || texture.mapping === CubeRefractionMapping );\n\n\t\tif ( isCubeTexture ) {\n\n\t\t\tif ( this._cubemapMaterial === null ) {\n\n\t\t\t\tthis._cubemapMaterial = _getCubemapMaterial();\n\n\t\t\t}\n\n\t\t\tthis._cubemapMaterial.uniforms.flipEnvMap.value = ( texture.isRenderTargetTexture === false ) ? - 1 : 1;\n\n\t\t} else {\n\n\t\t\tif ( this._equirectMaterial === null ) {\n\n\t\t\t\tthis._equirectMaterial = _getEquirectMaterial();\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst material = isCubeTexture ? this._cubemapMaterial : this._equirectMaterial;\n\t\tconst mesh = new Mesh( this._lodPlanes[ 0 ], material );\n\n\t\tconst uniforms = material.uniforms;\n\n\t\tuniforms[ 'envMap' ].value = texture;\n\n\t\tconst size = this._cubeSize;\n\n\t\t_setViewport( cubeUVRenderTarget, 0, 0, 3 * size, 2 * size );\n\n\t\trenderer.setRenderTarget( cubeUVRenderTarget );\n\t\trenderer.render( mesh, _flatCamera );\n\n\t}\n\n\t_applyPMREM( cubeUVRenderTarget ) {\n\n\t\tconst renderer = this._renderer;\n\t\tconst autoClear = renderer.autoClear;\n\t\trenderer.autoClear = false;\n\t\tconst n = this._lodPlanes.length;\n\n\t\tfor ( let i = 1; i < n; i ++ ) {\n\n\t\t\tconst sigma = Math.sqrt( this._sigmas[ i ] * this._sigmas[ i ] - this._sigmas[ i - 1 ] * this._sigmas[ i - 1 ] );\n\n\t\t\tconst poleAxis = _axisDirections[ ( n - i - 1 ) % _axisDirections.length ];\n\n\t\t\tthis._blur( cubeUVRenderTarget, i - 1, i, sigma, poleAxis );\n\n\t\t}\n\n\t\trenderer.autoClear = autoClear;\n\n\t}\n\n\t/**\n\t * This is a two-pass Gaussian blur for a cubemap. Normally this is done\n\t * vertically and horizontally, but this breaks down on a cube. Here we apply\n\t * the blur latitudinally (around the poles), and then longitudinally (towards\n\t * the poles) to approximate the orthogonally-separable blur. It is least\n\t * accurate at the poles, but still does a decent job.\n\t */\n\t_blur( cubeUVRenderTarget, lodIn, lodOut, sigma, poleAxis ) {\n\n\t\tconst pingPongRenderTarget = this._pingPongRenderTarget;\n\n\t\tthis._halfBlur(\n\t\t\tcubeUVRenderTarget,\n\t\t\tpingPongRenderTarget,\n\t\t\tlodIn,\n\t\t\tlodOut,\n\t\t\tsigma,\n\t\t\t'latitudinal',\n\t\t\tpoleAxis );\n\n\t\tthis._halfBlur(\n\t\t\tpingPongRenderTarget,\n\t\t\tcubeUVRenderTarget,\n\t\t\tlodOut,\n\t\t\tlodOut,\n\t\t\tsigma,\n\t\t\t'longitudinal',\n\t\t\tpoleAxis );\n\n\t}\n\n\t_halfBlur( targetIn, targetOut, lodIn, lodOut, sigmaRadians, direction, poleAxis ) {\n\n\t\tconst renderer = this._renderer;\n\t\tconst blurMaterial = this._blurMaterial;\n\n\t\tif ( direction !== 'latitudinal' && direction !== 'longitudinal' ) {\n\n\t\t\tconsole.error(\n\t\t\t\t'blur direction must be either latitudinal or longitudinal!' );\n\n\t\t}\n\n\t\t// Number of standard deviations at which to cut off the discrete approximation.\n\t\tconst STANDARD_DEVIATIONS = 3;\n\n\t\tconst blurMesh = new Mesh( this._lodPlanes[ lodOut ], blurMaterial );\n\t\tconst blurUniforms = blurMaterial.uniforms;\n\n\t\tconst pixels = this._sizeLods[ lodIn ] - 1;\n\t\tconst radiansPerPixel = isFinite( sigmaRadians ) ? Math.PI / ( 2 * pixels ) : 2 * Math.PI / ( 2 * MAX_SAMPLES - 1 );\n\t\tconst sigmaPixels = sigmaRadians / radiansPerPixel;\n\t\tconst samples = isFinite( sigmaRadians ) ? 1 + Math.floor( STANDARD_DEVIATIONS * sigmaPixels ) : MAX_SAMPLES;\n\n\t\tif ( samples > MAX_SAMPLES ) {\n\n\t\t\tconsole.warn( `sigmaRadians, ${\n\t\t\t\tsigmaRadians}, is too large and will clip, as it requested ${\n\t\t\t\tsamples} samples when the maximum is set to ${MAX_SAMPLES}` );\n\n\t\t}\n\n\t\tconst weights = [];\n\t\tlet sum = 0;\n\n\t\tfor ( let i = 0; i < MAX_SAMPLES; ++ i ) {\n\n\t\t\tconst x = i / sigmaPixels;\n\t\t\tconst weight = Math.exp( - x * x / 2 );\n\t\t\tweights.push( weight );\n\n\t\t\tif ( i === 0 ) {\n\n\t\t\t\tsum += weight;\n\n\t\t\t} else if ( i < samples ) {\n\n\t\t\t\tsum += 2 * weight;\n\n\t\t\t}\n\n\t\t}\n\n\t\tfor ( let i = 0; i < weights.length; i ++ ) {\n\n\t\t\tweights[ i ] = weights[ i ] / sum;\n\n\t\t}\n\n\t\tblurUniforms[ 'envMap' ].value = targetIn.texture;\n\t\tblurUniforms[ 'samples' ].value = samples;\n\t\tblurUniforms[ 'weights' ].value = weights;\n\t\tblurUniforms[ 'latitudinal' ].value = direction === 'latitudinal';\n\n\t\tif ( poleAxis ) {\n\n\t\t\tblurUniforms[ 'poleAxis' ].value = poleAxis;\n\n\t\t}\n\n\t\tconst { _lodMax } = this;\n\t\tblurUniforms[ 'dTheta' ].value = radiansPerPixel;\n\t\tblurUniforms[ 'mipInt' ].value = _lodMax - lodIn;\n\n\t\tconst outputSize = this._sizeLods[ lodOut ];\n\t\tconst x = 3 * outputSize * ( lodOut > _lodMax - LOD_MIN ? lodOut - _lodMax + LOD_MIN : 0 );\n\t\tconst y = 4 * ( this._cubeSize - outputSize );\n\n\t\t_setViewport( targetOut, x, y, 3 * outputSize, 2 * outputSize );\n\t\trenderer.setRenderTarget( targetOut );\n\t\trenderer.render( blurMesh, _flatCamera );\n\n\t}\n\n}\n\n\n\nfunction _createPlanes( lodMax ) {\n\n\tconst lodPlanes = [];\n\tconst sizeLods = [];\n\tconst sigmas = [];\n\n\tlet lod = lodMax;\n\n\tconst totalLods = lodMax - LOD_MIN + 1 + EXTRA_LOD_SIGMA.length;\n\n\tfor ( let i = 0; i < totalLods; i ++ ) {\n\n\t\tconst sizeLod = Math.pow( 2, lod );\n\t\tsizeLods.push( sizeLod );\n\t\tlet sigma = 1.0 / sizeLod;\n\n\t\tif ( i > lodMax - LOD_MIN ) {\n\n\t\t\tsigma = EXTRA_LOD_SIGMA[ i - lodMax + LOD_MIN - 1 ];\n\n\t\t} else if ( i === 0 ) {\n\n\t\t\tsigma = 0;\n\n\t\t}\n\n\t\tsigmas.push( sigma );\n\n\t\tconst texelSize = 1.0 / ( sizeLod - 2 );\n\t\tconst min = - texelSize;\n\t\tconst max = 1 + texelSize;\n\t\tconst uv1 = [ min, min, max, min, max, max, min, min, max, max, min, max ];\n\n\t\tconst cubeFaces = 6;\n\t\tconst vertices = 6;\n\t\tconst positionSize = 3;\n\t\tconst uvSize = 2;\n\t\tconst faceIndexSize = 1;\n\n\t\tconst position = new Float32Array( positionSize * vertices * cubeFaces );\n\t\tconst uv = new Float32Array( uvSize * vertices * cubeFaces );\n\t\tconst faceIndex = new Float32Array( faceIndexSize * vertices * cubeFaces );\n\n\t\tfor ( let face = 0; face < cubeFaces; face ++ ) {\n\n\t\t\tconst x = ( face % 3 ) * 2 / 3 - 1;\n\t\t\tconst y = face > 2 ? 0 : - 1;\n\t\t\tconst coordinates = [\n\t\t\t\tx, y, 0,\n\t\t\t\tx + 2 / 3, y, 0,\n\t\t\t\tx + 2 / 3, y + 1, 0,\n\t\t\t\tx, y, 0,\n\t\t\t\tx + 2 / 3, y + 1, 0,\n\t\t\t\tx, y + 1, 0\n\t\t\t];\n\t\t\tposition.set( coordinates, positionSize * vertices * face );\n\t\t\tuv.set( uv1, uvSize * vertices * face );\n\t\t\tconst fill = [ face, face, face, face, face, face ];\n\t\t\tfaceIndex.set( fill, faceIndexSize * vertices * face );\n\n\t\t}\n\n\t\tconst planes = new BufferGeometry();\n\t\tplanes.setAttribute( 'position', new BufferAttribute( position, positionSize ) );\n\t\tplanes.setAttribute( 'uv', new BufferAttribute( uv, uvSize ) );\n\t\tplanes.setAttribute( 'faceIndex', new BufferAttribute( faceIndex, faceIndexSize ) );\n\t\tlodPlanes.push( planes );\n\n\t\tif ( lod > LOD_MIN ) {\n\n\t\t\tlod --;\n\n\t\t}\n\n\t}\n\n\treturn { lodPlanes, sizeLods, sigmas };\n\n}\n\nfunction _createRenderTarget( width, height, params ) {\n\n\tconst cubeUVRenderTarget = new WebGLRenderTarget( width, height, params );\n\tcubeUVRenderTarget.texture.mapping = CubeUVReflectionMapping;\n\tcubeUVRenderTarget.texture.name = 'PMREM.cubeUv';\n\tcubeUVRenderTarget.scissorTest = true;\n\treturn cubeUVRenderTarget;\n\n}\n\nfunction _setViewport( target, x, y, width, height ) {\n\n\ttarget.viewport.set( x, y, width, height );\n\ttarget.scissor.set( x, y, width, height );\n\n}\n\nfunction _getBlurShader( lodMax, width, height ) {\n\n\tconst weights = new Float32Array( MAX_SAMPLES );\n\tconst poleAxis = new Vector3( 0, 1, 0 );\n\tconst shaderMaterial = new ShaderMaterial( {\n\n\t\tname: 'SphericalGaussianBlur',\n\n\t\tdefines: {\n\t\t\t'n': MAX_SAMPLES,\n\t\t\t'CUBEUV_TEXEL_WIDTH': 1.0 / width,\n\t\t\t'CUBEUV_TEXEL_HEIGHT': 1.0 / height,\n\t\t\t'CUBEUV_MAX_MIP': `${lodMax}.0`,\n\t\t},\n\n\t\tuniforms: {\n\t\t\t'envMap': { value: null },\n\t\t\t'samples': { value: 1 },\n\t\t\t'weights': { value: weights },\n\t\t\t'latitudinal': { value: false },\n\t\t\t'dTheta': { value: 0 },\n\t\t\t'mipInt': { value: 0 },\n\t\t\t'poleAxis': { value: poleAxis }\n\t\t},\n\n\t\tvertexShader: _getCommonVertexShader(),\n\n\t\tfragmentShader: /* glsl */`\n\n\t\t\tprecision mediump float;\n\t\t\tprecision mediump int;\n\n\t\t\tvarying vec3 vOutputDirection;\n\n\t\t\tuniform sampler2D envMap;\n\t\t\tuniform int samples;\n\t\t\tuniform float weights[ n ];\n\t\t\tuniform bool latitudinal;\n\t\t\tuniform float dTheta;\n\t\t\tuniform float mipInt;\n\t\t\tuniform vec3 poleAxis;\n\n\t\t\t#define ENVMAP_TYPE_CUBE_UV\n\t\t\t#include \n\n\t\t\tvec3 getSample( float theta, vec3 axis ) {\n\n\t\t\t\tfloat cosTheta = cos( theta );\n\t\t\t\t// Rodrigues' axis-angle rotation\n\t\t\t\tvec3 sampleDirection = vOutputDirection * cosTheta\n\t\t\t\t\t+ cross( axis, vOutputDirection ) * sin( theta )\n\t\t\t\t\t+ axis * dot( axis, vOutputDirection ) * ( 1.0 - cosTheta );\n\n\t\t\t\treturn bilinearCubeUV( envMap, sampleDirection, mipInt );\n\n\t\t\t}\n\n\t\t\tvoid main() {\n\n\t\t\t\tvec3 axis = latitudinal ? poleAxis : cross( poleAxis, vOutputDirection );\n\n\t\t\t\tif ( all( equal( axis, vec3( 0.0 ) ) ) ) {\n\n\t\t\t\t\taxis = vec3( vOutputDirection.z, 0.0, - vOutputDirection.x );\n\n\t\t\t\t}\n\n\t\t\t\taxis = normalize( axis );\n\n\t\t\t\tgl_FragColor = vec4( 0.0, 0.0, 0.0, 1.0 );\n\t\t\t\tgl_FragColor.rgb += weights[ 0 ] * getSample( 0.0, axis );\n\n\t\t\t\tfor ( int i = 1; i < n; i++ ) {\n\n\t\t\t\t\tif ( i >= samples ) {\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tfloat theta = dTheta * float( i );\n\t\t\t\t\tgl_FragColor.rgb += weights[ i ] * getSample( -1.0 * theta, axis );\n\t\t\t\t\tgl_FragColor.rgb += weights[ i ] * getSample( theta, axis );\n\n\t\t\t\t}\n\n\t\t\t}\n\t\t`,\n\n\t\tblending: NoBlending,\n\t\tdepthTest: false,\n\t\tdepthWrite: false\n\n\t} );\n\n\treturn shaderMaterial;\n\n}\n\nfunction _getEquirectMaterial() {\n\n\treturn new ShaderMaterial( {\n\n\t\tname: 'EquirectangularToCubeUV',\n\n\t\tuniforms: {\n\t\t\t'envMap': { value: null }\n\t\t},\n\n\t\tvertexShader: _getCommonVertexShader(),\n\n\t\tfragmentShader: /* glsl */`\n\n\t\t\tprecision mediump float;\n\t\t\tprecision mediump int;\n\n\t\t\tvarying vec3 vOutputDirection;\n\n\t\t\tuniform sampler2D envMap;\n\n\t\t\t#include \n\n\t\t\tvoid main() {\n\n\t\t\t\tvec3 outputDirection = normalize( vOutputDirection );\n\t\t\t\tvec2 uv = equirectUv( outputDirection );\n\n\t\t\t\tgl_FragColor = vec4( texture2D ( envMap, uv ).rgb, 1.0 );\n\n\t\t\t}\n\t\t`,\n\n\t\tblending: NoBlending,\n\t\tdepthTest: false,\n\t\tdepthWrite: false\n\n\t} );\n\n}\n\nfunction _getCubemapMaterial() {\n\n\treturn new ShaderMaterial( {\n\n\t\tname: 'CubemapToCubeUV',\n\n\t\tuniforms: {\n\t\t\t'envMap': { value: null },\n\t\t\t'flipEnvMap': { value: - 1 }\n\t\t},\n\n\t\tvertexShader: _getCommonVertexShader(),\n\n\t\tfragmentShader: /* glsl */`\n\n\t\t\tprecision mediump float;\n\t\t\tprecision mediump int;\n\n\t\t\tuniform float flipEnvMap;\n\n\t\t\tvarying vec3 vOutputDirection;\n\n\t\t\tuniform samplerCube envMap;\n\n\t\t\tvoid main() {\n\n\t\t\t\tgl_FragColor = textureCube( envMap, vec3( flipEnvMap * vOutputDirection.x, vOutputDirection.yz ) );\n\n\t\t\t}\n\t\t`,\n\n\t\tblending: NoBlending,\n\t\tdepthTest: false,\n\t\tdepthWrite: false\n\n\t} );\n\n}\n\nfunction _getCommonVertexShader() {\n\n\treturn /* glsl */`\n\n\t\tprecision mediump float;\n\t\tprecision mediump int;\n\n\t\tattribute float faceIndex;\n\n\t\tvarying vec3 vOutputDirection;\n\n\t\t// RH coordinate system; PMREM face-indexing convention\n\t\tvec3 getDirection( vec2 uv, float face ) {\n\n\t\t\tuv = 2.0 * uv - 1.0;\n\n\t\t\tvec3 direction = vec3( uv, 1.0 );\n\n\t\t\tif ( face == 0.0 ) {\n\n\t\t\t\tdirection = direction.zyx; // ( 1, v, u ) pos x\n\n\t\t\t} else if ( face == 1.0 ) {\n\n\t\t\t\tdirection = direction.xzy;\n\t\t\t\tdirection.xz *= -1.0; // ( -u, 1, -v ) pos y\n\n\t\t\t} else if ( face == 2.0 ) {\n\n\t\t\t\tdirection.x *= -1.0; // ( -u, v, 1 ) pos z\n\n\t\t\t} else if ( face == 3.0 ) {\n\n\t\t\t\tdirection = direction.zyx;\n\t\t\t\tdirection.xz *= -1.0; // ( -1, v, -u ) neg x\n\n\t\t\t} else if ( face == 4.0 ) {\n\n\t\t\t\tdirection = direction.xzy;\n\t\t\t\tdirection.xy *= -1.0; // ( -u, -1, v ) neg y\n\n\t\t\t} else if ( face == 5.0 ) {\n\n\t\t\t\tdirection.z *= -1.0; // ( u, v, -1 ) neg z\n\n\t\t\t}\n\n\t\t\treturn direction;\n\n\t\t}\n\n\t\tvoid main() {\n\n\t\t\tvOutputDirection = getDirection( uv, faceIndex );\n\t\t\tgl_Position = vec4( position, 1.0 );\n\n\t\t}\n\t`;\n\n}\n\nfunction WebGLCubeUVMaps( renderer ) {\n\n\tlet cubeUVmaps = new WeakMap();\n\n\tlet pmremGenerator = null;\n\n\tfunction get( texture ) {\n\n\t\tif ( texture && texture.isTexture ) {\n\n\t\t\tconst mapping = texture.mapping;\n\n\t\t\tconst isEquirectMap = ( mapping === EquirectangularReflectionMapping || mapping === EquirectangularRefractionMapping );\n\t\t\tconst isCubeMap = ( mapping === CubeReflectionMapping || mapping === CubeRefractionMapping );\n\n\t\t\t// equirect/cube map to cubeUV conversion\n\n\t\t\tif ( isEquirectMap || isCubeMap ) {\n\n\t\t\t\tlet renderTarget = cubeUVmaps.get( texture );\n\n\t\t\t\tconst currentPMREMVersion = renderTarget !== undefined ? renderTarget.texture.pmremVersion : 0;\n\n\t\t\t\tif ( texture.isRenderTargetTexture && texture.pmremVersion !== currentPMREMVersion ) {\n\n\t\t\t\t\tif ( pmremGenerator === null ) pmremGenerator = new PMREMGenerator( renderer );\n\n\t\t\t\t\trenderTarget = isEquirectMap ? pmremGenerator.fromEquirectangular( texture, renderTarget ) : pmremGenerator.fromCubemap( texture, renderTarget );\n\t\t\t\t\trenderTarget.texture.pmremVersion = texture.pmremVersion;\n\n\t\t\t\t\tcubeUVmaps.set( texture, renderTarget );\n\n\t\t\t\t\treturn renderTarget.texture;\n\n\t\t\t\t} else {\n\n\t\t\t\t\tif ( renderTarget !== undefined ) {\n\n\t\t\t\t\t\treturn renderTarget.texture;\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tconst image = texture.image;\n\n\t\t\t\t\t\tif ( ( isEquirectMap && image && image.height > 0 ) || ( isCubeMap && image && isCubeTextureComplete( image ) ) ) {\n\n\t\t\t\t\t\t\tif ( pmremGenerator === null ) pmremGenerator = new PMREMGenerator( renderer );\n\n\t\t\t\t\t\t\trenderTarget = isEquirectMap ? pmremGenerator.fromEquirectangular( texture ) : pmremGenerator.fromCubemap( texture );\n\t\t\t\t\t\t\trenderTarget.texture.pmremVersion = texture.pmremVersion;\n\n\t\t\t\t\t\t\tcubeUVmaps.set( texture, renderTarget );\n\n\t\t\t\t\t\t\ttexture.addEventListener( 'dispose', onTextureDispose );\n\n\t\t\t\t\t\t\treturn renderTarget.texture;\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t// image not yet ready. try the conversion next frame\n\n\t\t\t\t\t\t\treturn null;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn texture;\n\n\t}\n\n\tfunction isCubeTextureComplete( image ) {\n\n\t\tlet count = 0;\n\t\tconst length = 6;\n\n\t\tfor ( let i = 0; i < length; i ++ ) {\n\n\t\t\tif ( image[ i ] !== undefined ) count ++;\n\n\t\t}\n\n\t\treturn count === length;\n\n\n\t}\n\n\tfunction onTextureDispose( event ) {\n\n\t\tconst texture = event.target;\n\n\t\ttexture.removeEventListener( 'dispose', onTextureDispose );\n\n\t\tconst cubemapUV = cubeUVmaps.get( texture );\n\n\t\tif ( cubemapUV !== undefined ) {\n\n\t\t\tcubeUVmaps.delete( texture );\n\t\t\tcubemapUV.dispose();\n\n\t\t}\n\n\t}\n\n\tfunction dispose() {\n\n\t\tcubeUVmaps = new WeakMap();\n\n\t\tif ( pmremGenerator !== null ) {\n\n\t\t\tpmremGenerator.dispose();\n\t\t\tpmremGenerator = null;\n\n\t\t}\n\n\t}\n\n\treturn {\n\t\tget: get,\n\t\tdispose: dispose\n\t};\n\n}\n\nfunction WebGLExtensions( gl ) {\n\n\tconst extensions = {};\n\n\tfunction getExtension( name ) {\n\n\t\tif ( extensions[ name ] !== undefined ) {\n\n\t\t\treturn extensions[ name ];\n\n\t\t}\n\n\t\tlet extension;\n\n\t\tswitch ( name ) {\n\n\t\t\tcase 'WEBGL_depth_texture':\n\t\t\t\textension = gl.getExtension( 'WEBGL_depth_texture' ) || gl.getExtension( 'MOZ_WEBGL_depth_texture' ) || gl.getExtension( 'WEBKIT_WEBGL_depth_texture' );\n\t\t\t\tbreak;\n\n\t\t\tcase 'EXT_texture_filter_anisotropic':\n\t\t\t\textension = gl.getExtension( 'EXT_texture_filter_anisotropic' ) || gl.getExtension( 'MOZ_EXT_texture_filter_anisotropic' ) || gl.getExtension( 'WEBKIT_EXT_texture_filter_anisotropic' );\n\t\t\t\tbreak;\n\n\t\t\tcase 'WEBGL_compressed_texture_s3tc':\n\t\t\t\textension = gl.getExtension( 'WEBGL_compressed_texture_s3tc' ) || gl.getExtension( 'MOZ_WEBGL_compressed_texture_s3tc' ) || gl.getExtension( 'WEBKIT_WEBGL_compressed_texture_s3tc' );\n\t\t\t\tbreak;\n\n\t\t\tcase 'WEBGL_compressed_texture_pvrtc':\n\t\t\t\textension = gl.getExtension( 'WEBGL_compressed_texture_pvrtc' ) || gl.getExtension( 'WEBKIT_WEBGL_compressed_texture_pvrtc' );\n\t\t\t\tbreak;\n\n\t\t\tdefault:\n\t\t\t\textension = gl.getExtension( name );\n\n\t\t}\n\n\t\textensions[ name ] = extension;\n\n\t\treturn extension;\n\n\t}\n\n\treturn {\n\n\t\thas: function ( name ) {\n\n\t\t\treturn getExtension( name ) !== null;\n\n\t\t},\n\n\t\tinit: function () {\n\n\t\t\tgetExtension( 'EXT_color_buffer_float' );\n\t\t\tgetExtension( 'WEBGL_clip_cull_distance' );\n\t\t\tgetExtension( 'OES_texture_float_linear' );\n\t\t\tgetExtension( 'EXT_color_buffer_half_float' );\n\t\t\tgetExtension( 'WEBGL_multisampled_render_to_texture' );\n\t\t\tgetExtension( 'WEBGL_render_shared_exponent' );\n\n\t\t},\n\n\t\tget: function ( name ) {\n\n\t\t\tconst extension = getExtension( name );\n\n\t\t\tif ( extension === null ) {\n\n\t\t\t\twarnOnce( 'THREE.WebGLRenderer: ' + name + ' extension not supported.' );\n\n\t\t\t}\n\n\t\t\treturn extension;\n\n\t\t}\n\n\t};\n\n}\n\nfunction WebGLGeometries( gl, attributes, info, bindingStates ) {\n\n\tconst geometries = {};\n\tconst wireframeAttributes = new WeakMap();\n\n\tfunction onGeometryDispose( event ) {\n\n\t\tconst geometry = event.target;\n\n\t\tif ( geometry.index !== null ) {\n\n\t\t\tattributes.remove( geometry.index );\n\n\t\t}\n\n\t\tfor ( const name in geometry.attributes ) {\n\n\t\t\tattributes.remove( geometry.attributes[ name ] );\n\n\t\t}\n\n\t\tfor ( const name in geometry.morphAttributes ) {\n\n\t\t\tconst array = geometry.morphAttributes[ name ];\n\n\t\t\tfor ( let i = 0, l = array.length; i < l; i ++ ) {\n\n\t\t\t\tattributes.remove( array[ i ] );\n\n\t\t\t}\n\n\t\t}\n\n\t\tgeometry.removeEventListener( 'dispose', onGeometryDispose );\n\n\t\tdelete geometries[ geometry.id ];\n\n\t\tconst attribute = wireframeAttributes.get( geometry );\n\n\t\tif ( attribute ) {\n\n\t\t\tattributes.remove( attribute );\n\t\t\twireframeAttributes.delete( geometry );\n\n\t\t}\n\n\t\tbindingStates.releaseStatesOfGeometry( geometry );\n\n\t\tif ( geometry.isInstancedBufferGeometry === true ) {\n\n\t\t\tdelete geometry._maxInstanceCount;\n\n\t\t}\n\n\t\t//\n\n\t\tinfo.memory.geometries --;\n\n\t}\n\n\tfunction get( object, geometry ) {\n\n\t\tif ( geometries[ geometry.id ] === true ) return geometry;\n\n\t\tgeometry.addEventListener( 'dispose', onGeometryDispose );\n\n\t\tgeometries[ geometry.id ] = true;\n\n\t\tinfo.memory.geometries ++;\n\n\t\treturn geometry;\n\n\t}\n\n\tfunction update( geometry ) {\n\n\t\tconst geometryAttributes = geometry.attributes;\n\n\t\t// Updating index buffer in VAO now. See WebGLBindingStates.\n\n\t\tfor ( const name in geometryAttributes ) {\n\n\t\t\tattributes.update( geometryAttributes[ name ], gl.ARRAY_BUFFER );\n\n\t\t}\n\n\t\t// morph targets\n\n\t\tconst morphAttributes = geometry.morphAttributes;\n\n\t\tfor ( const name in morphAttributes ) {\n\n\t\t\tconst array = morphAttributes[ name ];\n\n\t\t\tfor ( let i = 0, l = array.length; i < l; i ++ ) {\n\n\t\t\t\tattributes.update( array[ i ], gl.ARRAY_BUFFER );\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\tfunction updateWireframeAttribute( geometry ) {\n\n\t\tconst indices = [];\n\n\t\tconst geometryIndex = geometry.index;\n\t\tconst geometryPosition = geometry.attributes.position;\n\t\tlet version = 0;\n\n\t\tif ( geometryIndex !== null ) {\n\n\t\t\tconst array = geometryIndex.array;\n\t\t\tversion = geometryIndex.version;\n\n\t\t\tfor ( let i = 0, l = array.length; i < l; i += 3 ) {\n\n\t\t\t\tconst a = array[ i + 0 ];\n\t\t\t\tconst b = array[ i + 1 ];\n\t\t\t\tconst c = array[ i + 2 ];\n\n\t\t\t\tindices.push( a, b, b, c, c, a );\n\n\t\t\t}\n\n\t\t} else if ( geometryPosition !== undefined ) {\n\n\t\t\tconst array = geometryPosition.array;\n\t\t\tversion = geometryPosition.version;\n\n\t\t\tfor ( let i = 0, l = ( array.length / 3 ) - 1; i < l; i += 3 ) {\n\n\t\t\t\tconst a = i + 0;\n\t\t\t\tconst b = i + 1;\n\t\t\t\tconst c = i + 2;\n\n\t\t\t\tindices.push( a, b, b, c, c, a );\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\treturn;\n\n\t\t}\n\n\t\tconst attribute = new ( arrayNeedsUint32( indices ) ? Uint32BufferAttribute : Uint16BufferAttribute )( indices, 1 );\n\t\tattribute.version = version;\n\n\t\t// Updating index buffer in VAO now. See WebGLBindingStates\n\n\t\t//\n\n\t\tconst previousAttribute = wireframeAttributes.get( geometry );\n\n\t\tif ( previousAttribute ) attributes.remove( previousAttribute );\n\n\t\t//\n\n\t\twireframeAttributes.set( geometry, attribute );\n\n\t}\n\n\tfunction getWireframeAttribute( geometry ) {\n\n\t\tconst currentAttribute = wireframeAttributes.get( geometry );\n\n\t\tif ( currentAttribute ) {\n\n\t\t\tconst geometryIndex = geometry.index;\n\n\t\t\tif ( geometryIndex !== null ) {\n\n\t\t\t\t// if the attribute is obsolete, create a new one\n\n\t\t\t\tif ( currentAttribute.version < geometryIndex.version ) {\n\n\t\t\t\t\tupdateWireframeAttribute( geometry );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tupdateWireframeAttribute( geometry );\n\n\t\t}\n\n\t\treturn wireframeAttributes.get( geometry );\n\n\t}\n\n\treturn {\n\n\t\tget: get,\n\t\tupdate: update,\n\n\t\tgetWireframeAttribute: getWireframeAttribute\n\n\t};\n\n}\n\nfunction WebGLIndexedBufferRenderer( gl, extensions, info ) {\n\n\tlet mode;\n\n\tfunction setMode( value ) {\n\n\t\tmode = value;\n\n\t}\n\n\tlet type, bytesPerElement;\n\n\tfunction setIndex( value ) {\n\n\t\ttype = value.type;\n\t\tbytesPerElement = value.bytesPerElement;\n\n\t}\n\n\tfunction render( start, count ) {\n\n\t\tgl.drawElements( mode, count, type, start * bytesPerElement );\n\n\t\tinfo.update( count, mode, 1 );\n\n\t}\n\n\tfunction renderInstances( start, count, primcount ) {\n\n\t\tif ( primcount === 0 ) return;\n\n\t\tgl.drawElementsInstanced( mode, count, type, start * bytesPerElement, primcount );\n\n\t\tinfo.update( count, mode, primcount );\n\n\t}\n\n\tfunction renderMultiDraw( starts, counts, drawCount ) {\n\n\t\tif ( drawCount === 0 ) return;\n\n\t\tconst extension = extensions.get( 'WEBGL_multi_draw' );\n\n\t\tif ( extension === null ) {\n\n\t\t\tfor ( let i = 0; i < drawCount; i ++ ) {\n\n\t\t\t\tthis.render( starts[ i ] / bytesPerElement, counts[ i ] );\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\textension.multiDrawElementsWEBGL( mode, counts, 0, type, starts, 0, drawCount );\n\n\t\t\tlet elementCount = 0;\n\t\t\tfor ( let i = 0; i < drawCount; i ++ ) {\n\n\t\t\t\telementCount += counts[ i ];\n\n\t\t\t}\n\n\t\t\tinfo.update( elementCount, mode, 1 );\n\n\t\t}\n\n\t}\n\n\tfunction renderMultiDrawInstances( starts, counts, drawCount, primcount ) {\n\n\t\tif ( drawCount === 0 ) return;\n\n\t\tconst extension = extensions.get( 'WEBGL_multi_draw' );\n\n\t\tif ( extension === null ) {\n\n\t\t\tfor ( let i = 0; i < starts.length; i ++ ) {\n\n\t\t\t\trenderInstances( starts[ i ] / bytesPerElement, counts[ i ], primcount[ i ] );\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\textension.multiDrawElementsInstancedWEBGL( mode, counts, 0, type, starts, 0, primcount, 0, drawCount );\n\n\t\t\tlet elementCount = 0;\n\t\t\tfor ( let i = 0; i < drawCount; i ++ ) {\n\n\t\t\t\telementCount += counts[ i ];\n\n\t\t\t}\n\n\t\t\tfor ( let i = 0; i < primcount.length; i ++ ) {\n\n\t\t\t\tinfo.update( elementCount, mode, primcount[ i ] );\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\t//\n\n\tthis.setMode = setMode;\n\tthis.setIndex = setIndex;\n\tthis.render = render;\n\tthis.renderInstances = renderInstances;\n\tthis.renderMultiDraw = renderMultiDraw;\n\tthis.renderMultiDrawInstances = renderMultiDrawInstances;\n\n}\n\nfunction WebGLInfo( gl ) {\n\n\tconst memory = {\n\t\tgeometries: 0,\n\t\ttextures: 0\n\t};\n\n\tconst render = {\n\t\tframe: 0,\n\t\tcalls: 0,\n\t\ttriangles: 0,\n\t\tpoints: 0,\n\t\tlines: 0\n\t};\n\n\tfunction update( count, mode, instanceCount ) {\n\n\t\trender.calls ++;\n\n\t\tswitch ( mode ) {\n\n\t\t\tcase gl.TRIANGLES:\n\t\t\t\trender.triangles += instanceCount * ( count / 3 );\n\t\t\t\tbreak;\n\n\t\t\tcase gl.LINES:\n\t\t\t\trender.lines += instanceCount * ( count / 2 );\n\t\t\t\tbreak;\n\n\t\t\tcase gl.LINE_STRIP:\n\t\t\t\trender.lines += instanceCount * ( count - 1 );\n\t\t\t\tbreak;\n\n\t\t\tcase gl.LINE_LOOP:\n\t\t\t\trender.lines += instanceCount * count;\n\t\t\t\tbreak;\n\n\t\t\tcase gl.POINTS:\n\t\t\t\trender.points += instanceCount * count;\n\t\t\t\tbreak;\n\n\t\t\tdefault:\n\t\t\t\tconsole.error( 'THREE.WebGLInfo: Unknown draw mode:', mode );\n\t\t\t\tbreak;\n\n\t\t}\n\n\t}\n\n\tfunction reset() {\n\n\t\trender.calls = 0;\n\t\trender.triangles = 0;\n\t\trender.points = 0;\n\t\trender.lines = 0;\n\n\t}\n\n\treturn {\n\t\tmemory: memory,\n\t\trender: render,\n\t\tprograms: null,\n\t\tautoReset: true,\n\t\treset: reset,\n\t\tupdate: update\n\t};\n\n}\n\nfunction WebGLMorphtargets( gl, capabilities, textures ) {\n\n\tconst morphTextures = new WeakMap();\n\tconst morph = new Vector4();\n\n\tfunction update( object, geometry, program ) {\n\n\t\tconst objectInfluences = object.morphTargetInfluences;\n\n\t\t// the following encodes morph targets into an array of data textures. Each layer represents a single morph target.\n\n\t\tconst morphAttribute = geometry.morphAttributes.position || geometry.morphAttributes.normal || geometry.morphAttributes.color;\n\t\tconst morphTargetsCount = ( morphAttribute !== undefined ) ? morphAttribute.length : 0;\n\n\t\tlet entry = morphTextures.get( geometry );\n\n\t\tif ( entry === undefined || entry.count !== morphTargetsCount ) {\n\n\t\t\tif ( entry !== undefined ) entry.texture.dispose();\n\n\t\t\tconst hasMorphPosition = geometry.morphAttributes.position !== undefined;\n\t\t\tconst hasMorphNormals = geometry.morphAttributes.normal !== undefined;\n\t\t\tconst hasMorphColors = geometry.morphAttributes.color !== undefined;\n\n\t\t\tconst morphTargets = geometry.morphAttributes.position || [];\n\t\t\tconst morphNormals = geometry.morphAttributes.normal || [];\n\t\t\tconst morphColors = geometry.morphAttributes.color || [];\n\n\t\t\tlet vertexDataCount = 0;\n\n\t\t\tif ( hasMorphPosition === true ) vertexDataCount = 1;\n\t\t\tif ( hasMorphNormals === true ) vertexDataCount = 2;\n\t\t\tif ( hasMorphColors === true ) vertexDataCount = 3;\n\n\t\t\tlet width = geometry.attributes.position.count * vertexDataCount;\n\t\t\tlet height = 1;\n\n\t\t\tif ( width > capabilities.maxTextureSize ) {\n\n\t\t\t\theight = Math.ceil( width / capabilities.maxTextureSize );\n\t\t\t\twidth = capabilities.maxTextureSize;\n\n\t\t\t}\n\n\t\t\tconst buffer = new Float32Array( width * height * 4 * morphTargetsCount );\n\n\t\t\tconst texture = new DataArrayTexture( buffer, width, height, morphTargetsCount );\n\t\t\ttexture.type = FloatType;\n\t\t\ttexture.needsUpdate = true;\n\n\t\t\t// fill buffer\n\n\t\t\tconst vertexDataStride = vertexDataCount * 4;\n\n\t\t\tfor ( let i = 0; i < morphTargetsCount; i ++ ) {\n\n\t\t\t\tconst morphTarget = morphTargets[ i ];\n\t\t\t\tconst morphNormal = morphNormals[ i ];\n\t\t\t\tconst morphColor = morphColors[ i ];\n\n\t\t\t\tconst offset = width * height * 4 * i;\n\n\t\t\t\tfor ( let j = 0; j < morphTarget.count; j ++ ) {\n\n\t\t\t\t\tconst stride = j * vertexDataStride;\n\n\t\t\t\t\tif ( hasMorphPosition === true ) {\n\n\t\t\t\t\t\tmorph.fromBufferAttribute( morphTarget, j );\n\n\t\t\t\t\t\tbuffer[ offset + stride + 0 ] = morph.x;\n\t\t\t\t\t\tbuffer[ offset + stride + 1 ] = morph.y;\n\t\t\t\t\t\tbuffer[ offset + stride + 2 ] = morph.z;\n\t\t\t\t\t\tbuffer[ offset + stride + 3 ] = 0;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( hasMorphNormals === true ) {\n\n\t\t\t\t\t\tmorph.fromBufferAttribute( morphNormal, j );\n\n\t\t\t\t\t\tbuffer[ offset + stride + 4 ] = morph.x;\n\t\t\t\t\t\tbuffer[ offset + stride + 5 ] = morph.y;\n\t\t\t\t\t\tbuffer[ offset + stride + 6 ] = morph.z;\n\t\t\t\t\t\tbuffer[ offset + stride + 7 ] = 0;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( hasMorphColors === true ) {\n\n\t\t\t\t\t\tmorph.fromBufferAttribute( morphColor, j );\n\n\t\t\t\t\t\tbuffer[ offset + stride + 8 ] = morph.x;\n\t\t\t\t\t\tbuffer[ offset + stride + 9 ] = morph.y;\n\t\t\t\t\t\tbuffer[ offset + stride + 10 ] = morph.z;\n\t\t\t\t\t\tbuffer[ offset + stride + 11 ] = ( morphColor.itemSize === 4 ) ? morph.w : 1;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tentry = {\n\t\t\t\tcount: morphTargetsCount,\n\t\t\t\ttexture: texture,\n\t\t\t\tsize: new Vector2( width, height )\n\t\t\t};\n\n\t\t\tmorphTextures.set( geometry, entry );\n\n\t\t\tfunction disposeTexture() {\n\n\t\t\t\ttexture.dispose();\n\n\t\t\t\tmorphTextures.delete( geometry );\n\n\t\t\t\tgeometry.removeEventListener( 'dispose', disposeTexture );\n\n\t\t\t}\n\n\t\t\tgeometry.addEventListener( 'dispose', disposeTexture );\n\n\t\t}\n\n\t\t//\n\t\tif ( object.isInstancedMesh === true && object.morphTexture !== null ) {\n\n\t\t\tprogram.getUniforms().setValue( gl, 'morphTexture', object.morphTexture, textures );\n\n\t\t} else {\n\n\t\t\tlet morphInfluencesSum = 0;\n\n\t\t\tfor ( let i = 0; i < objectInfluences.length; i ++ ) {\n\n\t\t\t\tmorphInfluencesSum += objectInfluences[ i ];\n\n\t\t\t}\n\n\t\t\tconst morphBaseInfluence = geometry.morphTargetsRelative ? 1 : 1 - morphInfluencesSum;\n\n\n\t\t\tprogram.getUniforms().setValue( gl, 'morphTargetBaseInfluence', morphBaseInfluence );\n\t\t\tprogram.getUniforms().setValue( gl, 'morphTargetInfluences', objectInfluences );\n\n\t\t}\n\n\t\tprogram.getUniforms().setValue( gl, 'morphTargetsTexture', entry.texture, textures );\n\t\tprogram.getUniforms().setValue( gl, 'morphTargetsTextureSize', entry.size );\n\n\t}\n\n\treturn {\n\n\t\tupdate: update\n\n\t};\n\n}\n\nfunction WebGLObjects( gl, geometries, attributes, info ) {\n\n\tlet updateMap = new WeakMap();\n\n\tfunction update( object ) {\n\n\t\tconst frame = info.render.frame;\n\n\t\tconst geometry = object.geometry;\n\t\tconst buffergeometry = geometries.get( object, geometry );\n\n\t\t// Update once per frame\n\n\t\tif ( updateMap.get( buffergeometry ) !== frame ) {\n\n\t\t\tgeometries.update( buffergeometry );\n\n\t\t\tupdateMap.set( buffergeometry, frame );\n\n\t\t}\n\n\t\tif ( object.isInstancedMesh ) {\n\n\t\t\tif ( object.hasEventListener( 'dispose', onInstancedMeshDispose ) === false ) {\n\n\t\t\t\tobject.addEventListener( 'dispose', onInstancedMeshDispose );\n\n\t\t\t}\n\n\t\t\tif ( updateMap.get( object ) !== frame ) {\n\n\t\t\t\tattributes.update( object.instanceMatrix, gl.ARRAY_BUFFER );\n\n\t\t\t\tif ( object.instanceColor !== null ) {\n\n\t\t\t\t\tattributes.update( object.instanceColor, gl.ARRAY_BUFFER );\n\n\t\t\t\t}\n\n\t\t\t\tupdateMap.set( object, frame );\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( object.isSkinnedMesh ) {\n\n\t\t\tconst skeleton = object.skeleton;\n\n\t\t\tif ( updateMap.get( skeleton ) !== frame ) {\n\n\t\t\t\tskeleton.update();\n\n\t\t\t\tupdateMap.set( skeleton, frame );\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn buffergeometry;\n\n\t}\n\n\tfunction dispose() {\n\n\t\tupdateMap = new WeakMap();\n\n\t}\n\n\tfunction onInstancedMeshDispose( event ) {\n\n\t\tconst instancedMesh = event.target;\n\n\t\tinstancedMesh.removeEventListener( 'dispose', onInstancedMeshDispose );\n\n\t\tattributes.remove( instancedMesh.instanceMatrix );\n\n\t\tif ( instancedMesh.instanceColor !== null ) attributes.remove( instancedMesh.instanceColor );\n\n\t}\n\n\treturn {\n\n\t\tupdate: update,\n\t\tdispose: dispose\n\n\t};\n\n}\n\nclass DepthTexture extends Texture {\n\n\tconstructor( width, height, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy, format = DepthFormat ) {\n\n\t\tif ( format !== DepthFormat && format !== DepthStencilFormat ) {\n\n\t\t\tthrow new Error( 'DepthTexture format must be either THREE.DepthFormat or THREE.DepthStencilFormat' );\n\n\t\t}\n\n\t\tif ( type === undefined && format === DepthFormat ) type = UnsignedIntType;\n\t\tif ( type === undefined && format === DepthStencilFormat ) type = UnsignedInt248Type;\n\n\t\tsuper( null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy );\n\n\t\tthis.isDepthTexture = true;\n\n\t\tthis.image = { width: width, height: height };\n\n\t\tthis.magFilter = magFilter !== undefined ? magFilter : NearestFilter;\n\t\tthis.minFilter = minFilter !== undefined ? minFilter : NearestFilter;\n\n\t\tthis.flipY = false;\n\t\tthis.generateMipmaps = false;\n\n\t\tthis.compareFunction = null;\n\n\t}\n\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.compareFunction = source.compareFunction;\n\n\t\treturn this;\n\n\t}\n\n\ttoJSON( meta ) {\n\n\t\tconst data = super.toJSON( meta );\n\n\t\tif ( this.compareFunction !== null ) data.compareFunction = this.compareFunction;\n\n\t\treturn data;\n\n\t}\n\n}\n\n/**\n * Uniforms of a program.\n * Those form a tree structure with a special top-level container for the root,\n * which you get by calling 'new WebGLUniforms( gl, program )'.\n *\n *\n * Properties of inner nodes including the top-level container:\n *\n * .seq - array of nested uniforms\n * .map - nested uniforms by name\n *\n *\n * Methods of all nodes except the top-level container:\n *\n * .setValue( gl, value, [textures] )\n *\n * \t\tuploads a uniform value(s)\n * \tthe 'textures' parameter is needed for sampler uniforms\n *\n *\n * Static methods of the top-level container (textures factorizations):\n *\n * .upload( gl, seq, values, textures )\n *\n * \t\tsets uniforms in 'seq' to 'values[id].value'\n *\n * .seqWithValue( seq, values ) : filteredSeq\n *\n * \t\tfilters 'seq' entries with corresponding entry in values\n *\n *\n * Methods of the top-level container (textures factorizations):\n *\n * .setValue( gl, name, value, textures )\n *\n * \t\tsets uniform with name 'name' to 'value'\n *\n * .setOptional( gl, obj, prop )\n *\n * \t\tlike .set for an optional property of the object\n *\n */\n\n\nconst emptyTexture = /*@__PURE__*/ new Texture();\n\nconst emptyShadowTexture = /*@__PURE__*/ new DepthTexture( 1, 1 );\nemptyShadowTexture.compareFunction = LessEqualCompare;\n\nconst emptyArrayTexture = /*@__PURE__*/ new DataArrayTexture();\nconst empty3dTexture = /*@__PURE__*/ new Data3DTexture();\nconst emptyCubeTexture = /*@__PURE__*/ new CubeTexture();\n\n// --- Utilities ---\n\n// Array Caches (provide typed arrays for temporary by size)\n\nconst arrayCacheF32 = [];\nconst arrayCacheI32 = [];\n\n// Float32Array caches used for uploading Matrix uniforms\n\nconst mat4array = new Float32Array( 16 );\nconst mat3array = new Float32Array( 9 );\nconst mat2array = new Float32Array( 4 );\n\n// Flattening for arrays of vectors and matrices\n\nfunction flatten( array, nBlocks, blockSize ) {\n\n\tconst firstElem = array[ 0 ];\n\n\tif ( firstElem <= 0 || firstElem > 0 ) return array;\n\t// unoptimized: ! isNaN( firstElem )\n\t// see http://jacksondunstan.com/articles/983\n\n\tconst n = nBlocks * blockSize;\n\tlet r = arrayCacheF32[ n ];\n\n\tif ( r === undefined ) {\n\n\t\tr = new Float32Array( n );\n\t\tarrayCacheF32[ n ] = r;\n\n\t}\n\n\tif ( nBlocks !== 0 ) {\n\n\t\tfirstElem.toArray( r, 0 );\n\n\t\tfor ( let i = 1, offset = 0; i !== nBlocks; ++ i ) {\n\n\t\t\toffset += blockSize;\n\t\t\tarray[ i ].toArray( r, offset );\n\n\t\t}\n\n\t}\n\n\treturn r;\n\n}\n\nfunction arraysEqual( a, b ) {\n\n\tif ( a.length !== b.length ) return false;\n\n\tfor ( let i = 0, l = a.length; i < l; i ++ ) {\n\n\t\tif ( a[ i ] !== b[ i ] ) return false;\n\n\t}\n\n\treturn true;\n\n}\n\nfunction copyArray( a, b ) {\n\n\tfor ( let i = 0, l = b.length; i < l; i ++ ) {\n\n\t\ta[ i ] = b[ i ];\n\n\t}\n\n}\n\n// Texture unit allocation\n\nfunction allocTexUnits( textures, n ) {\n\n\tlet r = arrayCacheI32[ n ];\n\n\tif ( r === undefined ) {\n\n\t\tr = new Int32Array( n );\n\t\tarrayCacheI32[ n ] = r;\n\n\t}\n\n\tfor ( let i = 0; i !== n; ++ i ) {\n\n\t\tr[ i ] = textures.allocateTextureUnit();\n\n\t}\n\n\treturn r;\n\n}\n\n// --- Setters ---\n\n// Note: Defining these methods externally, because they come in a bunch\n// and this way their names minify.\n\n// Single scalar\n\nfunction setValueV1f( gl, v ) {\n\n\tconst cache = this.cache;\n\n\tif ( cache[ 0 ] === v ) return;\n\n\tgl.uniform1f( this.addr, v );\n\n\tcache[ 0 ] = v;\n\n}\n\n// Single float vector (from flat array or THREE.VectorN)\n\nfunction setValueV2f( gl, v ) {\n\n\tconst cache = this.cache;\n\n\tif ( v.x !== undefined ) {\n\n\t\tif ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y ) {\n\n\t\t\tgl.uniform2f( this.addr, v.x, v.y );\n\n\t\t\tcache[ 0 ] = v.x;\n\t\t\tcache[ 1 ] = v.y;\n\n\t\t}\n\n\t} else {\n\n\t\tif ( arraysEqual( cache, v ) ) return;\n\n\t\tgl.uniform2fv( this.addr, v );\n\n\t\tcopyArray( cache, v );\n\n\t}\n\n}\n\nfunction setValueV3f( gl, v ) {\n\n\tconst cache = this.cache;\n\n\tif ( v.x !== undefined ) {\n\n\t\tif ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y || cache[ 2 ] !== v.z ) {\n\n\t\t\tgl.uniform3f( this.addr, v.x, v.y, v.z );\n\n\t\t\tcache[ 0 ] = v.x;\n\t\t\tcache[ 1 ] = v.y;\n\t\t\tcache[ 2 ] = v.z;\n\n\t\t}\n\n\t} else if ( v.r !== undefined ) {\n\n\t\tif ( cache[ 0 ] !== v.r || cache[ 1 ] !== v.g || cache[ 2 ] !== v.b ) {\n\n\t\t\tgl.uniform3f( this.addr, v.r, v.g, v.b );\n\n\t\t\tcache[ 0 ] = v.r;\n\t\t\tcache[ 1 ] = v.g;\n\t\t\tcache[ 2 ] = v.b;\n\n\t\t}\n\n\t} else {\n\n\t\tif ( arraysEqual( cache, v ) ) return;\n\n\t\tgl.uniform3fv( this.addr, v );\n\n\t\tcopyArray( cache, v );\n\n\t}\n\n}\n\nfunction setValueV4f( gl, v ) {\n\n\tconst cache = this.cache;\n\n\tif ( v.x !== undefined ) {\n\n\t\tif ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y || cache[ 2 ] !== v.z || cache[ 3 ] !== v.w ) {\n\n\t\t\tgl.uniform4f( this.addr, v.x, v.y, v.z, v.w );\n\n\t\t\tcache[ 0 ] = v.x;\n\t\t\tcache[ 1 ] = v.y;\n\t\t\tcache[ 2 ] = v.z;\n\t\t\tcache[ 3 ] = v.w;\n\n\t\t}\n\n\t} else {\n\n\t\tif ( arraysEqual( cache, v ) ) return;\n\n\t\tgl.uniform4fv( this.addr, v );\n\n\t\tcopyArray( cache, v );\n\n\t}\n\n}\n\n// Single matrix (from flat array or THREE.MatrixN)\n\nfunction setValueM2( gl, v ) {\n\n\tconst cache = this.cache;\n\tconst elements = v.elements;\n\n\tif ( elements === undefined ) {\n\n\t\tif ( arraysEqual( cache, v ) ) return;\n\n\t\tgl.uniformMatrix2fv( this.addr, false, v );\n\n\t\tcopyArray( cache, v );\n\n\t} else {\n\n\t\tif ( arraysEqual( cache, elements ) ) return;\n\n\t\tmat2array.set( elements );\n\n\t\tgl.uniformMatrix2fv( this.addr, false, mat2array );\n\n\t\tcopyArray( cache, elements );\n\n\t}\n\n}\n\nfunction setValueM3( gl, v ) {\n\n\tconst cache = this.cache;\n\tconst elements = v.elements;\n\n\tif ( elements === undefined ) {\n\n\t\tif ( arraysEqual( cache, v ) ) return;\n\n\t\tgl.uniformMatrix3fv( this.addr, false, v );\n\n\t\tcopyArray( cache, v );\n\n\t} else {\n\n\t\tif ( arraysEqual( cache, elements ) ) return;\n\n\t\tmat3array.set( elements );\n\n\t\tgl.uniformMatrix3fv( this.addr, false, mat3array );\n\n\t\tcopyArray( cache, elements );\n\n\t}\n\n}\n\nfunction setValueM4( gl, v ) {\n\n\tconst cache = this.cache;\n\tconst elements = v.elements;\n\n\tif ( elements === undefined ) {\n\n\t\tif ( arraysEqual( cache, v ) ) return;\n\n\t\tgl.uniformMatrix4fv( this.addr, false, v );\n\n\t\tcopyArray( cache, v );\n\n\t} else {\n\n\t\tif ( arraysEqual( cache, elements ) ) return;\n\n\t\tmat4array.set( elements );\n\n\t\tgl.uniformMatrix4fv( this.addr, false, mat4array );\n\n\t\tcopyArray( cache, elements );\n\n\t}\n\n}\n\n// Single integer / boolean\n\nfunction setValueV1i( gl, v ) {\n\n\tconst cache = this.cache;\n\n\tif ( cache[ 0 ] === v ) return;\n\n\tgl.uniform1i( this.addr, v );\n\n\tcache[ 0 ] = v;\n\n}\n\n// Single integer / boolean vector (from flat array or THREE.VectorN)\n\nfunction setValueV2i( gl, v ) {\n\n\tconst cache = this.cache;\n\n\tif ( v.x !== undefined ) {\n\n\t\tif ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y ) {\n\n\t\t\tgl.uniform2i( this.addr, v.x, v.y );\n\n\t\t\tcache[ 0 ] = v.x;\n\t\t\tcache[ 1 ] = v.y;\n\n\t\t}\n\n\t} else {\n\n\t\tif ( arraysEqual( cache, v ) ) return;\n\n\t\tgl.uniform2iv( this.addr, v );\n\n\t\tcopyArray( cache, v );\n\n\t}\n\n}\n\nfunction setValueV3i( gl, v ) {\n\n\tconst cache = this.cache;\n\n\tif ( v.x !== undefined ) {\n\n\t\tif ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y || cache[ 2 ] !== v.z ) {\n\n\t\t\tgl.uniform3i( this.addr, v.x, v.y, v.z );\n\n\t\t\tcache[ 0 ] = v.x;\n\t\t\tcache[ 1 ] = v.y;\n\t\t\tcache[ 2 ] = v.z;\n\n\t\t}\n\n\t} else {\n\n\t\tif ( arraysEqual( cache, v ) ) return;\n\n\t\tgl.uniform3iv( this.addr, v );\n\n\t\tcopyArray( cache, v );\n\n\t}\n\n}\n\nfunction setValueV4i( gl, v ) {\n\n\tconst cache = this.cache;\n\n\tif ( v.x !== undefined ) {\n\n\t\tif ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y || cache[ 2 ] !== v.z || cache[ 3 ] !== v.w ) {\n\n\t\t\tgl.uniform4i( this.addr, v.x, v.y, v.z, v.w );\n\n\t\t\tcache[ 0 ] = v.x;\n\t\t\tcache[ 1 ] = v.y;\n\t\t\tcache[ 2 ] = v.z;\n\t\t\tcache[ 3 ] = v.w;\n\n\t\t}\n\n\t} else {\n\n\t\tif ( arraysEqual( cache, v ) ) return;\n\n\t\tgl.uniform4iv( this.addr, v );\n\n\t\tcopyArray( cache, v );\n\n\t}\n\n}\n\n// Single unsigned integer\n\nfunction setValueV1ui( gl, v ) {\n\n\tconst cache = this.cache;\n\n\tif ( cache[ 0 ] === v ) return;\n\n\tgl.uniform1ui( this.addr, v );\n\n\tcache[ 0 ] = v;\n\n}\n\n// Single unsigned integer vector (from flat array or THREE.VectorN)\n\nfunction setValueV2ui( gl, v ) {\n\n\tconst cache = this.cache;\n\n\tif ( v.x !== undefined ) {\n\n\t\tif ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y ) {\n\n\t\t\tgl.uniform2ui( this.addr, v.x, v.y );\n\n\t\t\tcache[ 0 ] = v.x;\n\t\t\tcache[ 1 ] = v.y;\n\n\t\t}\n\n\t} else {\n\n\t\tif ( arraysEqual( cache, v ) ) return;\n\n\t\tgl.uniform2uiv( this.addr, v );\n\n\t\tcopyArray( cache, v );\n\n\t}\n\n}\n\nfunction setValueV3ui( gl, v ) {\n\n\tconst cache = this.cache;\n\n\tif ( v.x !== undefined ) {\n\n\t\tif ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y || cache[ 2 ] !== v.z ) {\n\n\t\t\tgl.uniform3ui( this.addr, v.x, v.y, v.z );\n\n\t\t\tcache[ 0 ] = v.x;\n\t\t\tcache[ 1 ] = v.y;\n\t\t\tcache[ 2 ] = v.z;\n\n\t\t}\n\n\t} else {\n\n\t\tif ( arraysEqual( cache, v ) ) return;\n\n\t\tgl.uniform3uiv( this.addr, v );\n\n\t\tcopyArray( cache, v );\n\n\t}\n\n}\n\nfunction setValueV4ui( gl, v ) {\n\n\tconst cache = this.cache;\n\n\tif ( v.x !== undefined ) {\n\n\t\tif ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y || cache[ 2 ] !== v.z || cache[ 3 ] !== v.w ) {\n\n\t\t\tgl.uniform4ui( this.addr, v.x, v.y, v.z, v.w );\n\n\t\t\tcache[ 0 ] = v.x;\n\t\t\tcache[ 1 ] = v.y;\n\t\t\tcache[ 2 ] = v.z;\n\t\t\tcache[ 3 ] = v.w;\n\n\t\t}\n\n\t} else {\n\n\t\tif ( arraysEqual( cache, v ) ) return;\n\n\t\tgl.uniform4uiv( this.addr, v );\n\n\t\tcopyArray( cache, v );\n\n\t}\n\n}\n\n\n// Single texture (2D / Cube)\n\nfunction setValueT1( gl, v, textures ) {\n\n\tconst cache = this.cache;\n\tconst unit = textures.allocateTextureUnit();\n\n\tif ( cache[ 0 ] !== unit ) {\n\n\t\tgl.uniform1i( this.addr, unit );\n\t\tcache[ 0 ] = unit;\n\n\t}\n\n\tconst emptyTexture2D = ( this.type === gl.SAMPLER_2D_SHADOW ) ? emptyShadowTexture : emptyTexture;\n\n\ttextures.setTexture2D( v || emptyTexture2D, unit );\n\n}\n\nfunction setValueT3D1( gl, v, textures ) {\n\n\tconst cache = this.cache;\n\tconst unit = textures.allocateTextureUnit();\n\n\tif ( cache[ 0 ] !== unit ) {\n\n\t\tgl.uniform1i( this.addr, unit );\n\t\tcache[ 0 ] = unit;\n\n\t}\n\n\ttextures.setTexture3D( v || empty3dTexture, unit );\n\n}\n\nfunction setValueT6( gl, v, textures ) {\n\n\tconst cache = this.cache;\n\tconst unit = textures.allocateTextureUnit();\n\n\tif ( cache[ 0 ] !== unit ) {\n\n\t\tgl.uniform1i( this.addr, unit );\n\t\tcache[ 0 ] = unit;\n\n\t}\n\n\ttextures.setTextureCube( v || emptyCubeTexture, unit );\n\n}\n\nfunction setValueT2DArray1( gl, v, textures ) {\n\n\tconst cache = this.cache;\n\tconst unit = textures.allocateTextureUnit();\n\n\tif ( cache[ 0 ] !== unit ) {\n\n\t\tgl.uniform1i( this.addr, unit );\n\t\tcache[ 0 ] = unit;\n\n\t}\n\n\ttextures.setTexture2DArray( v || emptyArrayTexture, unit );\n\n}\n\n// Helper to pick the right setter for the singular case\n\nfunction getSingularSetter( type ) {\n\n\tswitch ( type ) {\n\n\t\tcase 0x1406: return setValueV1f; // FLOAT\n\t\tcase 0x8b50: return setValueV2f; // _VEC2\n\t\tcase 0x8b51: return setValueV3f; // _VEC3\n\t\tcase 0x8b52: return setValueV4f; // _VEC4\n\n\t\tcase 0x8b5a: return setValueM2; // _MAT2\n\t\tcase 0x8b5b: return setValueM3; // _MAT3\n\t\tcase 0x8b5c: return setValueM4; // _MAT4\n\n\t\tcase 0x1404: case 0x8b56: return setValueV1i; // INT, BOOL\n\t\tcase 0x8b53: case 0x8b57: return setValueV2i; // _VEC2\n\t\tcase 0x8b54: case 0x8b58: return setValueV3i; // _VEC3\n\t\tcase 0x8b55: case 0x8b59: return setValueV4i; // _VEC4\n\n\t\tcase 0x1405: return setValueV1ui; // UINT\n\t\tcase 0x8dc6: return setValueV2ui; // _VEC2\n\t\tcase 0x8dc7: return setValueV3ui; // _VEC3\n\t\tcase 0x8dc8: return setValueV4ui; // _VEC4\n\n\t\tcase 0x8b5e: // SAMPLER_2D\n\t\tcase 0x8d66: // SAMPLER_EXTERNAL_OES\n\t\tcase 0x8dca: // INT_SAMPLER_2D\n\t\tcase 0x8dd2: // UNSIGNED_INT_SAMPLER_2D\n\t\tcase 0x8b62: // SAMPLER_2D_SHADOW\n\t\t\treturn setValueT1;\n\n\t\tcase 0x8b5f: // SAMPLER_3D\n\t\tcase 0x8dcb: // INT_SAMPLER_3D\n\t\tcase 0x8dd3: // UNSIGNED_INT_SAMPLER_3D\n\t\t\treturn setValueT3D1;\n\n\t\tcase 0x8b60: // SAMPLER_CUBE\n\t\tcase 0x8dcc: // INT_SAMPLER_CUBE\n\t\tcase 0x8dd4: // UNSIGNED_INT_SAMPLER_CUBE\n\t\tcase 0x8dc5: // SAMPLER_CUBE_SHADOW\n\t\t\treturn setValueT6;\n\n\t\tcase 0x8dc1: // SAMPLER_2D_ARRAY\n\t\tcase 0x8dcf: // INT_SAMPLER_2D_ARRAY\n\t\tcase 0x8dd7: // UNSIGNED_INT_SAMPLER_2D_ARRAY\n\t\tcase 0x8dc4: // SAMPLER_2D_ARRAY_SHADOW\n\t\t\treturn setValueT2DArray1;\n\n\t}\n\n}\n\n\n// Array of scalars\n\nfunction setValueV1fArray( gl, v ) {\n\n\tgl.uniform1fv( this.addr, v );\n\n}\n\n// Array of vectors (from flat array or array of THREE.VectorN)\n\nfunction setValueV2fArray( gl, v ) {\n\n\tconst data = flatten( v, this.size, 2 );\n\n\tgl.uniform2fv( this.addr, data );\n\n}\n\nfunction setValueV3fArray( gl, v ) {\n\n\tconst data = flatten( v, this.size, 3 );\n\n\tgl.uniform3fv( this.addr, data );\n\n}\n\nfunction setValueV4fArray( gl, v ) {\n\n\tconst data = flatten( v, this.size, 4 );\n\n\tgl.uniform4fv( this.addr, data );\n\n}\n\n// Array of matrices (from flat array or array of THREE.MatrixN)\n\nfunction setValueM2Array( gl, v ) {\n\n\tconst data = flatten( v, this.size, 4 );\n\n\tgl.uniformMatrix2fv( this.addr, false, data );\n\n}\n\nfunction setValueM3Array( gl, v ) {\n\n\tconst data = flatten( v, this.size, 9 );\n\n\tgl.uniformMatrix3fv( this.addr, false, data );\n\n}\n\nfunction setValueM4Array( gl, v ) {\n\n\tconst data = flatten( v, this.size, 16 );\n\n\tgl.uniformMatrix4fv( this.addr, false, data );\n\n}\n\n// Array of integer / boolean\n\nfunction setValueV1iArray( gl, v ) {\n\n\tgl.uniform1iv( this.addr, v );\n\n}\n\n// Array of integer / boolean vectors (from flat array)\n\nfunction setValueV2iArray( gl, v ) {\n\n\tgl.uniform2iv( this.addr, v );\n\n}\n\nfunction setValueV3iArray( gl, v ) {\n\n\tgl.uniform3iv( this.addr, v );\n\n}\n\nfunction setValueV4iArray( gl, v ) {\n\n\tgl.uniform4iv( this.addr, v );\n\n}\n\n// Array of unsigned integer\n\nfunction setValueV1uiArray( gl, v ) {\n\n\tgl.uniform1uiv( this.addr, v );\n\n}\n\n// Array of unsigned integer vectors (from flat array)\n\nfunction setValueV2uiArray( gl, v ) {\n\n\tgl.uniform2uiv( this.addr, v );\n\n}\n\nfunction setValueV3uiArray( gl, v ) {\n\n\tgl.uniform3uiv( this.addr, v );\n\n}\n\nfunction setValueV4uiArray( gl, v ) {\n\n\tgl.uniform4uiv( this.addr, v );\n\n}\n\n\n// Array of textures (2D / 3D / Cube / 2DArray)\n\nfunction setValueT1Array( gl, v, textures ) {\n\n\tconst cache = this.cache;\n\n\tconst n = v.length;\n\n\tconst units = allocTexUnits( textures, n );\n\n\tif ( ! arraysEqual( cache, units ) ) {\n\n\t\tgl.uniform1iv( this.addr, units );\n\n\t\tcopyArray( cache, units );\n\n\t}\n\n\tfor ( let i = 0; i !== n; ++ i ) {\n\n\t\ttextures.setTexture2D( v[ i ] || emptyTexture, units[ i ] );\n\n\t}\n\n}\n\nfunction setValueT3DArray( gl, v, textures ) {\n\n\tconst cache = this.cache;\n\n\tconst n = v.length;\n\n\tconst units = allocTexUnits( textures, n );\n\n\tif ( ! arraysEqual( cache, units ) ) {\n\n\t\tgl.uniform1iv( this.addr, units );\n\n\t\tcopyArray( cache, units );\n\n\t}\n\n\tfor ( let i = 0; i !== n; ++ i ) {\n\n\t\ttextures.setTexture3D( v[ i ] || empty3dTexture, units[ i ] );\n\n\t}\n\n}\n\nfunction setValueT6Array( gl, v, textures ) {\n\n\tconst cache = this.cache;\n\n\tconst n = v.length;\n\n\tconst units = allocTexUnits( textures, n );\n\n\tif ( ! arraysEqual( cache, units ) ) {\n\n\t\tgl.uniform1iv( this.addr, units );\n\n\t\tcopyArray( cache, units );\n\n\t}\n\n\tfor ( let i = 0; i !== n; ++ i ) {\n\n\t\ttextures.setTextureCube( v[ i ] || emptyCubeTexture, units[ i ] );\n\n\t}\n\n}\n\nfunction setValueT2DArrayArray( gl, v, textures ) {\n\n\tconst cache = this.cache;\n\n\tconst n = v.length;\n\n\tconst units = allocTexUnits( textures, n );\n\n\tif ( ! arraysEqual( cache, units ) ) {\n\n\t\tgl.uniform1iv( this.addr, units );\n\n\t\tcopyArray( cache, units );\n\n\t}\n\n\tfor ( let i = 0; i !== n; ++ i ) {\n\n\t\ttextures.setTexture2DArray( v[ i ] || emptyArrayTexture, units[ i ] );\n\n\t}\n\n}\n\n\n// Helper to pick the right setter for a pure (bottom-level) array\n\nfunction getPureArraySetter( type ) {\n\n\tswitch ( type ) {\n\n\t\tcase 0x1406: return setValueV1fArray; // FLOAT\n\t\tcase 0x8b50: return setValueV2fArray; // _VEC2\n\t\tcase 0x8b51: return setValueV3fArray; // _VEC3\n\t\tcase 0x8b52: return setValueV4fArray; // _VEC4\n\n\t\tcase 0x8b5a: return setValueM2Array; // _MAT2\n\t\tcase 0x8b5b: return setValueM3Array; // _MAT3\n\t\tcase 0x8b5c: return setValueM4Array; // _MAT4\n\n\t\tcase 0x1404: case 0x8b56: return setValueV1iArray; // INT, BOOL\n\t\tcase 0x8b53: case 0x8b57: return setValueV2iArray; // _VEC2\n\t\tcase 0x8b54: case 0x8b58: return setValueV3iArray; // _VEC3\n\t\tcase 0x8b55: case 0x8b59: return setValueV4iArray; // _VEC4\n\n\t\tcase 0x1405: return setValueV1uiArray; // UINT\n\t\tcase 0x8dc6: return setValueV2uiArray; // _VEC2\n\t\tcase 0x8dc7: return setValueV3uiArray; // _VEC3\n\t\tcase 0x8dc8: return setValueV4uiArray; // _VEC4\n\n\t\tcase 0x8b5e: // SAMPLER_2D\n\t\tcase 0x8d66: // SAMPLER_EXTERNAL_OES\n\t\tcase 0x8dca: // INT_SAMPLER_2D\n\t\tcase 0x8dd2: // UNSIGNED_INT_SAMPLER_2D\n\t\tcase 0x8b62: // SAMPLER_2D_SHADOW\n\t\t\treturn setValueT1Array;\n\n\t\tcase 0x8b5f: // SAMPLER_3D\n\t\tcase 0x8dcb: // INT_SAMPLER_3D\n\t\tcase 0x8dd3: // UNSIGNED_INT_SAMPLER_3D\n\t\t\treturn setValueT3DArray;\n\n\t\tcase 0x8b60: // SAMPLER_CUBE\n\t\tcase 0x8dcc: // INT_SAMPLER_CUBE\n\t\tcase 0x8dd4: // UNSIGNED_INT_SAMPLER_CUBE\n\t\tcase 0x8dc5: // SAMPLER_CUBE_SHADOW\n\t\t\treturn setValueT6Array;\n\n\t\tcase 0x8dc1: // SAMPLER_2D_ARRAY\n\t\tcase 0x8dcf: // INT_SAMPLER_2D_ARRAY\n\t\tcase 0x8dd7: // UNSIGNED_INT_SAMPLER_2D_ARRAY\n\t\tcase 0x8dc4: // SAMPLER_2D_ARRAY_SHADOW\n\t\t\treturn setValueT2DArrayArray;\n\n\t}\n\n}\n\n// --- Uniform Classes ---\n\nclass SingleUniform {\n\n\tconstructor( id, activeInfo, addr ) {\n\n\t\tthis.id = id;\n\t\tthis.addr = addr;\n\t\tthis.cache = [];\n\t\tthis.type = activeInfo.type;\n\t\tthis.setValue = getSingularSetter( activeInfo.type );\n\n\t\t// this.path = activeInfo.name; // DEBUG\n\n\t}\n\n}\n\nclass PureArrayUniform {\n\n\tconstructor( id, activeInfo, addr ) {\n\n\t\tthis.id = id;\n\t\tthis.addr = addr;\n\t\tthis.cache = [];\n\t\tthis.type = activeInfo.type;\n\t\tthis.size = activeInfo.size;\n\t\tthis.setValue = getPureArraySetter( activeInfo.type );\n\n\t\t// this.path = activeInfo.name; // DEBUG\n\n\t}\n\n}\n\nclass StructuredUniform {\n\n\tconstructor( id ) {\n\n\t\tthis.id = id;\n\n\t\tthis.seq = [];\n\t\tthis.map = {};\n\n\t}\n\n\tsetValue( gl, value, textures ) {\n\n\t\tconst seq = this.seq;\n\n\t\tfor ( let i = 0, n = seq.length; i !== n; ++ i ) {\n\n\t\t\tconst u = seq[ i ];\n\t\t\tu.setValue( gl, value[ u.id ], textures );\n\n\t\t}\n\n\t}\n\n}\n\n// --- Top-level ---\n\n// Parser - builds up the property tree from the path strings\n\nconst RePathPart = /(\\w+)(\\])?(\\[|\\.)?/g;\n\n// extracts\n// \t- the identifier (member name or array index)\n// - followed by an optional right bracket (found when array index)\n// - followed by an optional left bracket or dot (type of subscript)\n//\n// Note: These portions can be read in a non-overlapping fashion and\n// allow straightforward parsing of the hierarchy that WebGL encodes\n// in the uniform names.\n\nfunction addUniform( container, uniformObject ) {\n\n\tcontainer.seq.push( uniformObject );\n\tcontainer.map[ uniformObject.id ] = uniformObject;\n\n}\n\nfunction parseUniform( activeInfo, addr, container ) {\n\n\tconst path = activeInfo.name,\n\t\tpathLength = path.length;\n\n\t// reset RegExp object, because of the early exit of a previous run\n\tRePathPart.lastIndex = 0;\n\n\twhile ( true ) {\n\n\t\tconst match = RePathPart.exec( path ),\n\t\t\tmatchEnd = RePathPart.lastIndex;\n\n\t\tlet id = match[ 1 ];\n\t\tconst idIsIndex = match[ 2 ] === ']',\n\t\t\tsubscript = match[ 3 ];\n\n\t\tif ( idIsIndex ) id = id | 0; // convert to integer\n\n\t\tif ( subscript === undefined || subscript === '[' && matchEnd + 2 === pathLength ) {\n\n\t\t\t// bare name or \"pure\" bottom-level array \"[0]\" suffix\n\n\t\t\taddUniform( container, subscript === undefined ?\n\t\t\t\tnew SingleUniform( id, activeInfo, addr ) :\n\t\t\t\tnew PureArrayUniform( id, activeInfo, addr ) );\n\n\t\t\tbreak;\n\n\t\t} else {\n\n\t\t\t// step into inner node / create it in case it doesn't exist\n\n\t\t\tconst map = container.map;\n\t\t\tlet next = map[ id ];\n\n\t\t\tif ( next === undefined ) {\n\n\t\t\t\tnext = new StructuredUniform( id );\n\t\t\t\taddUniform( container, next );\n\n\t\t\t}\n\n\t\t\tcontainer = next;\n\n\t\t}\n\n\t}\n\n}\n\n// Root Container\n\nclass WebGLUniforms {\n\n\tconstructor( gl, program ) {\n\n\t\tthis.seq = [];\n\t\tthis.map = {};\n\n\t\tconst n = gl.getProgramParameter( program, gl.ACTIVE_UNIFORMS );\n\n\t\tfor ( let i = 0; i < n; ++ i ) {\n\n\t\t\tconst info = gl.getActiveUniform( program, i ),\n\t\t\t\taddr = gl.getUniformLocation( program, info.name );\n\n\t\t\tparseUniform( info, addr, this );\n\n\t\t}\n\n\t}\n\n\tsetValue( gl, name, value, textures ) {\n\n\t\tconst u = this.map[ name ];\n\n\t\tif ( u !== undefined ) u.setValue( gl, value, textures );\n\n\t}\n\n\tsetOptional( gl, object, name ) {\n\n\t\tconst v = object[ name ];\n\n\t\tif ( v !== undefined ) this.setValue( gl, name, v );\n\n\t}\n\n\tstatic upload( gl, seq, values, textures ) {\n\n\t\tfor ( let i = 0, n = seq.length; i !== n; ++ i ) {\n\n\t\t\tconst u = seq[ i ],\n\t\t\t\tv = values[ u.id ];\n\n\t\t\tif ( v.needsUpdate !== false ) {\n\n\t\t\t\t// note: always updating when .needsUpdate is undefined\n\t\t\t\tu.setValue( gl, v.value, textures );\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\tstatic seqWithValue( seq, values ) {\n\n\t\tconst r = [];\n\n\t\tfor ( let i = 0, n = seq.length; i !== n; ++ i ) {\n\n\t\t\tconst u = seq[ i ];\n\t\t\tif ( u.id in values ) r.push( u );\n\n\t\t}\n\n\t\treturn r;\n\n\t}\n\n}\n\nfunction WebGLShader( gl, type, string ) {\n\n\tconst shader = gl.createShader( type );\n\n\tgl.shaderSource( shader, string );\n\tgl.compileShader( shader );\n\n\treturn shader;\n\n}\n\n// From https://www.khronos.org/registry/webgl/extensions/KHR_parallel_shader_compile/\nconst COMPLETION_STATUS_KHR = 0x91B1;\n\nlet programIdCount = 0;\n\nfunction handleSource( string, errorLine ) {\n\n\tconst lines = string.split( '\\n' );\n\tconst lines2 = [];\n\n\tconst from = Math.max( errorLine - 6, 0 );\n\tconst to = Math.min( errorLine + 6, lines.length );\n\n\tfor ( let i = from; i < to; i ++ ) {\n\n\t\tconst line = i + 1;\n\t\tlines2.push( `${line === errorLine ? '>' : ' '} ${line}: ${lines[ i ]}` );\n\n\t}\n\n\treturn lines2.join( '\\n' );\n\n}\n\nfunction getEncodingComponents( colorSpace ) {\n\n\tconst workingPrimaries = ColorManagement.getPrimaries( ColorManagement.workingColorSpace );\n\tconst encodingPrimaries = ColorManagement.getPrimaries( colorSpace );\n\n\tlet gamutMapping;\n\n\tif ( workingPrimaries === encodingPrimaries ) {\n\n\t\tgamutMapping = '';\n\n\t} else if ( workingPrimaries === P3Primaries && encodingPrimaries === Rec709Primaries ) {\n\n\t\tgamutMapping = 'LinearDisplayP3ToLinearSRGB';\n\n\t} else if ( workingPrimaries === Rec709Primaries && encodingPrimaries === P3Primaries ) {\n\n\t\tgamutMapping = 'LinearSRGBToLinearDisplayP3';\n\n\t}\n\n\tswitch ( colorSpace ) {\n\n\t\tcase LinearSRGBColorSpace:\n\t\tcase LinearDisplayP3ColorSpace:\n\t\t\treturn [ gamutMapping, 'LinearTransferOETF' ];\n\n\t\tcase SRGBColorSpace:\n\t\tcase DisplayP3ColorSpace:\n\t\t\treturn [ gamutMapping, 'sRGBTransferOETF' ];\n\n\t\tdefault:\n\t\t\tconsole.warn( 'THREE.WebGLProgram: Unsupported color space:', colorSpace );\n\t\t\treturn [ gamutMapping, 'LinearTransferOETF' ];\n\n\t}\n\n}\n\nfunction getShaderErrors( gl, shader, type ) {\n\n\tconst status = gl.getShaderParameter( shader, gl.COMPILE_STATUS );\n\tconst errors = gl.getShaderInfoLog( shader ).trim();\n\n\tif ( status && errors === '' ) return '';\n\n\tconst errorMatches = /ERROR: 0:(\\d+)/.exec( errors );\n\tif ( errorMatches ) {\n\n\t\t// --enable-privileged-webgl-extension\n\t\t// console.log( '**' + type + '**', gl.getExtension( 'WEBGL_debug_shaders' ).getTranslatedShaderSource( shader ) );\n\n\t\tconst errorLine = parseInt( errorMatches[ 1 ] );\n\t\treturn type.toUpperCase() + '\\n\\n' + errors + '\\n\\n' + handleSource( gl.getShaderSource( shader ), errorLine );\n\n\t} else {\n\n\t\treturn errors;\n\n\t}\n\n}\n\nfunction getTexelEncodingFunction( functionName, colorSpace ) {\n\n\tconst components = getEncodingComponents( colorSpace );\n\treturn `vec4 ${functionName}( vec4 value ) { return ${components[ 0 ]}( ${components[ 1 ]}( value ) ); }`;\n\n}\n\nfunction getToneMappingFunction( functionName, toneMapping ) {\n\n\tlet toneMappingName;\n\n\tswitch ( toneMapping ) {\n\n\t\tcase LinearToneMapping:\n\t\t\ttoneMappingName = 'Linear';\n\t\t\tbreak;\n\n\t\tcase ReinhardToneMapping:\n\t\t\ttoneMappingName = 'Reinhard';\n\t\t\tbreak;\n\n\t\tcase CineonToneMapping:\n\t\t\ttoneMappingName = 'OptimizedCineon';\n\t\t\tbreak;\n\n\t\tcase ACESFilmicToneMapping:\n\t\t\ttoneMappingName = 'ACESFilmic';\n\t\t\tbreak;\n\n\t\tcase AgXToneMapping:\n\t\t\ttoneMappingName = 'AgX';\n\t\t\tbreak;\n\n\t\tcase NeutralToneMapping:\n\t\t\ttoneMappingName = 'Neutral';\n\t\t\tbreak;\n\n\t\tcase CustomToneMapping:\n\t\t\ttoneMappingName = 'Custom';\n\t\t\tbreak;\n\n\t\tdefault:\n\t\t\tconsole.warn( 'THREE.WebGLProgram: Unsupported toneMapping:', toneMapping );\n\t\t\ttoneMappingName = 'Linear';\n\n\t}\n\n\treturn 'vec3 ' + functionName + '( vec3 color ) { return ' + toneMappingName + 'ToneMapping( color ); }';\n\n}\n\nfunction generateVertexExtensions( parameters ) {\n\n\tconst chunks = [\n\t\tparameters.extensionClipCullDistance ? '#extension GL_ANGLE_clip_cull_distance : require' : '',\n\t\tparameters.extensionMultiDraw ? '#extension GL_ANGLE_multi_draw : require' : '',\n\t];\n\n\treturn chunks.filter( filterEmptyLine ).join( '\\n' );\n\n}\n\nfunction generateDefines( defines ) {\n\n\tconst chunks = [];\n\n\tfor ( const name in defines ) {\n\n\t\tconst value = defines[ name ];\n\n\t\tif ( value === false ) continue;\n\n\t\tchunks.push( '#define ' + name + ' ' + value );\n\n\t}\n\n\treturn chunks.join( '\\n' );\n\n}\n\nfunction fetchAttributeLocations( gl, program ) {\n\n\tconst attributes = {};\n\n\tconst n = gl.getProgramParameter( program, gl.ACTIVE_ATTRIBUTES );\n\n\tfor ( let i = 0; i < n; i ++ ) {\n\n\t\tconst info = gl.getActiveAttrib( program, i );\n\t\tconst name = info.name;\n\n\t\tlet locationSize = 1;\n\t\tif ( info.type === gl.FLOAT_MAT2 ) locationSize = 2;\n\t\tif ( info.type === gl.FLOAT_MAT3 ) locationSize = 3;\n\t\tif ( info.type === gl.FLOAT_MAT4 ) locationSize = 4;\n\n\t\t// console.log( 'THREE.WebGLProgram: ACTIVE VERTEX ATTRIBUTE:', name, i );\n\n\t\tattributes[ name ] = {\n\t\t\ttype: info.type,\n\t\t\tlocation: gl.getAttribLocation( program, name ),\n\t\t\tlocationSize: locationSize\n\t\t};\n\n\t}\n\n\treturn attributes;\n\n}\n\nfunction filterEmptyLine( string ) {\n\n\treturn string !== '';\n\n}\n\nfunction replaceLightNums( string, parameters ) {\n\n\tconst numSpotLightCoords = parameters.numSpotLightShadows + parameters.numSpotLightMaps - parameters.numSpotLightShadowsWithMaps;\n\n\treturn string\n\t\t.replace( /NUM_DIR_LIGHTS/g, parameters.numDirLights )\n\t\t.replace( /NUM_SPOT_LIGHTS/g, parameters.numSpotLights )\n\t\t.replace( /NUM_SPOT_LIGHT_MAPS/g, parameters.numSpotLightMaps )\n\t\t.replace( /NUM_SPOT_LIGHT_COORDS/g, numSpotLightCoords )\n\t\t.replace( /NUM_RECT_AREA_LIGHTS/g, parameters.numRectAreaLights )\n\t\t.replace( /NUM_POINT_LIGHTS/g, parameters.numPointLights )\n\t\t.replace( /NUM_HEMI_LIGHTS/g, parameters.numHemiLights )\n\t\t.replace( /NUM_DIR_LIGHT_SHADOWS/g, parameters.numDirLightShadows )\n\t\t.replace( /NUM_SPOT_LIGHT_SHADOWS_WITH_MAPS/g, parameters.numSpotLightShadowsWithMaps )\n\t\t.replace( /NUM_SPOT_LIGHT_SHADOWS/g, parameters.numSpotLightShadows )\n\t\t.replace( /NUM_POINT_LIGHT_SHADOWS/g, parameters.numPointLightShadows );\n\n}\n\nfunction replaceClippingPlaneNums( string, parameters ) {\n\n\treturn string\n\t\t.replace( /NUM_CLIPPING_PLANES/g, parameters.numClippingPlanes )\n\t\t.replace( /UNION_CLIPPING_PLANES/g, ( parameters.numClippingPlanes - parameters.numClipIntersection ) );\n\n}\n\n// Resolve Includes\n\nconst includePattern = /^[ \\t]*#include +<([\\w\\d./]+)>/gm;\n\nfunction resolveIncludes( string ) {\n\n\treturn string.replace( includePattern, includeReplacer );\n\n}\n\nconst shaderChunkMap = new Map();\n\nfunction includeReplacer( match, include ) {\n\n\tlet string = ShaderChunk[ include ];\n\n\tif ( string === undefined ) {\n\n\t\tconst newInclude = shaderChunkMap.get( include );\n\n\t\tif ( newInclude !== undefined ) {\n\n\t\t\tstring = ShaderChunk[ newInclude ];\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: Shader chunk \"%s\" has been deprecated. Use \"%s\" instead.', include, newInclude );\n\n\t\t} else {\n\n\t\t\tthrow new Error( 'Can not resolve #include <' + include + '>' );\n\n\t\t}\n\n\t}\n\n\treturn resolveIncludes( string );\n\n}\n\n// Unroll Loops\n\nconst unrollLoopPattern = /#pragma unroll_loop_start\\s+for\\s*\\(\\s*int\\s+i\\s*=\\s*(\\d+)\\s*;\\s*i\\s*<\\s*(\\d+)\\s*;\\s*i\\s*\\+\\+\\s*\\)\\s*{([\\s\\S]+?)}\\s+#pragma unroll_loop_end/g;\n\nfunction unrollLoops( string ) {\n\n\treturn string.replace( unrollLoopPattern, loopReplacer );\n\n}\n\nfunction loopReplacer( match, start, end, snippet ) {\n\n\tlet string = '';\n\n\tfor ( let i = parseInt( start ); i < parseInt( end ); i ++ ) {\n\n\t\tstring += snippet\n\t\t\t.replace( /\\[\\s*i\\s*\\]/g, '[ ' + i + ' ]' )\n\t\t\t.replace( /UNROLLED_LOOP_INDEX/g, i );\n\n\t}\n\n\treturn string;\n\n}\n\n//\n\nfunction generatePrecision( parameters ) {\n\n\tlet precisionstring = `precision ${parameters.precision} float;\n\tprecision ${parameters.precision} int;\n\tprecision ${parameters.precision} sampler2D;\n\tprecision ${parameters.precision} samplerCube;\n\tprecision ${parameters.precision} sampler3D;\n\tprecision ${parameters.precision} sampler2DArray;\n\tprecision ${parameters.precision} sampler2DShadow;\n\tprecision ${parameters.precision} samplerCubeShadow;\n\tprecision ${parameters.precision} sampler2DArrayShadow;\n\tprecision ${parameters.precision} isampler2D;\n\tprecision ${parameters.precision} isampler3D;\n\tprecision ${parameters.precision} isamplerCube;\n\tprecision ${parameters.precision} isampler2DArray;\n\tprecision ${parameters.precision} usampler2D;\n\tprecision ${parameters.precision} usampler3D;\n\tprecision ${parameters.precision} usamplerCube;\n\tprecision ${parameters.precision} usampler2DArray;\n\t`;\n\n\tif ( parameters.precision === 'highp' ) {\n\n\t\tprecisionstring += '\\n#define HIGH_PRECISION';\n\n\t} else if ( parameters.precision === 'mediump' ) {\n\n\t\tprecisionstring += '\\n#define MEDIUM_PRECISION';\n\n\t} else if ( parameters.precision === 'lowp' ) {\n\n\t\tprecisionstring += '\\n#define LOW_PRECISION';\n\n\t}\n\n\treturn precisionstring;\n\n}\n\nfunction generateShadowMapTypeDefine( parameters ) {\n\n\tlet shadowMapTypeDefine = 'SHADOWMAP_TYPE_BASIC';\n\n\tif ( parameters.shadowMapType === PCFShadowMap ) {\n\n\t\tshadowMapTypeDefine = 'SHADOWMAP_TYPE_PCF';\n\n\t} else if ( parameters.shadowMapType === PCFSoftShadowMap ) {\n\n\t\tshadowMapTypeDefine = 'SHADOWMAP_TYPE_PCF_SOFT';\n\n\t} else if ( parameters.shadowMapType === VSMShadowMap ) {\n\n\t\tshadowMapTypeDefine = 'SHADOWMAP_TYPE_VSM';\n\n\t}\n\n\treturn shadowMapTypeDefine;\n\n}\n\nfunction generateEnvMapTypeDefine( parameters ) {\n\n\tlet envMapTypeDefine = 'ENVMAP_TYPE_CUBE';\n\n\tif ( parameters.envMap ) {\n\n\t\tswitch ( parameters.envMapMode ) {\n\n\t\t\tcase CubeReflectionMapping:\n\t\t\tcase CubeRefractionMapping:\n\t\t\t\tenvMapTypeDefine = 'ENVMAP_TYPE_CUBE';\n\t\t\t\tbreak;\n\n\t\t\tcase CubeUVReflectionMapping:\n\t\t\t\tenvMapTypeDefine = 'ENVMAP_TYPE_CUBE_UV';\n\t\t\t\tbreak;\n\n\t\t}\n\n\t}\n\n\treturn envMapTypeDefine;\n\n}\n\nfunction generateEnvMapModeDefine( parameters ) {\n\n\tlet envMapModeDefine = 'ENVMAP_MODE_REFLECTION';\n\n\tif ( parameters.envMap ) {\n\n\t\tswitch ( parameters.envMapMode ) {\n\n\t\t\tcase CubeRefractionMapping:\n\n\t\t\t\tenvMapModeDefine = 'ENVMAP_MODE_REFRACTION';\n\t\t\t\tbreak;\n\n\t\t}\n\n\t}\n\n\treturn envMapModeDefine;\n\n}\n\nfunction generateEnvMapBlendingDefine( parameters ) {\n\n\tlet envMapBlendingDefine = 'ENVMAP_BLENDING_NONE';\n\n\tif ( parameters.envMap ) {\n\n\t\tswitch ( parameters.combine ) {\n\n\t\t\tcase MultiplyOperation:\n\t\t\t\tenvMapBlendingDefine = 'ENVMAP_BLENDING_MULTIPLY';\n\t\t\t\tbreak;\n\n\t\t\tcase MixOperation:\n\t\t\t\tenvMapBlendingDefine = 'ENVMAP_BLENDING_MIX';\n\t\t\t\tbreak;\n\n\t\t\tcase AddOperation:\n\t\t\t\tenvMapBlendingDefine = 'ENVMAP_BLENDING_ADD';\n\t\t\t\tbreak;\n\n\t\t}\n\n\t}\n\n\treturn envMapBlendingDefine;\n\n}\n\nfunction generateCubeUVSize( parameters ) {\n\n\tconst imageHeight = parameters.envMapCubeUVHeight;\n\n\tif ( imageHeight === null ) return null;\n\n\tconst maxMip = Math.log2( imageHeight ) - 2;\n\n\tconst texelHeight = 1.0 / imageHeight;\n\n\tconst texelWidth = 1.0 / ( 3 * Math.max( Math.pow( 2, maxMip ), 7 * 16 ) );\n\n\treturn { texelWidth, texelHeight, maxMip };\n\n}\n\nfunction WebGLProgram( renderer, cacheKey, parameters, bindingStates ) {\n\n\t// TODO Send this event to Three.js DevTools\n\t// console.log( 'WebGLProgram', cacheKey );\n\n\tconst gl = renderer.getContext();\n\n\tconst defines = parameters.defines;\n\n\tlet vertexShader = parameters.vertexShader;\n\tlet fragmentShader = parameters.fragmentShader;\n\n\tconst shadowMapTypeDefine = generateShadowMapTypeDefine( parameters );\n\tconst envMapTypeDefine = generateEnvMapTypeDefine( parameters );\n\tconst envMapModeDefine = generateEnvMapModeDefine( parameters );\n\tconst envMapBlendingDefine = generateEnvMapBlendingDefine( parameters );\n\tconst envMapCubeUVSize = generateCubeUVSize( parameters );\n\n\tconst customVertexExtensions = generateVertexExtensions( parameters );\n\n\tconst customDefines = generateDefines( defines );\n\n\tconst program = gl.createProgram();\n\n\tlet prefixVertex, prefixFragment;\n\tlet versionString = parameters.glslVersion ? '#version ' + parameters.glslVersion + '\\n' : '';\n\n\tif ( parameters.isRawShaderMaterial ) {\n\n\t\tprefixVertex = [\n\n\t\t\t'#define SHADER_TYPE ' + parameters.shaderType,\n\t\t\t'#define SHADER_NAME ' + parameters.shaderName,\n\n\t\t\tcustomDefines\n\n\t\t].filter( filterEmptyLine ).join( '\\n' );\n\n\t\tif ( prefixVertex.length > 0 ) {\n\n\t\t\tprefixVertex += '\\n';\n\n\t\t}\n\n\t\tprefixFragment = [\n\n\t\t\t'#define SHADER_TYPE ' + parameters.shaderType,\n\t\t\t'#define SHADER_NAME ' + parameters.shaderName,\n\n\t\t\tcustomDefines\n\n\t\t].filter( filterEmptyLine ).join( '\\n' );\n\n\t\tif ( prefixFragment.length > 0 ) {\n\n\t\t\tprefixFragment += '\\n';\n\n\t\t}\n\n\t} else {\n\n\t\tprefixVertex = [\n\n\t\t\tgeneratePrecision( parameters ),\n\n\t\t\t'#define SHADER_TYPE ' + parameters.shaderType,\n\t\t\t'#define SHADER_NAME ' + parameters.shaderName,\n\n\t\t\tcustomDefines,\n\n\t\t\tparameters.extensionClipCullDistance ? '#define USE_CLIP_DISTANCE' : '',\n\t\t\tparameters.batching ? '#define USE_BATCHING' : '',\n\t\t\tparameters.batchingColor ? '#define USE_BATCHING_COLOR' : '',\n\t\t\tparameters.instancing ? '#define USE_INSTANCING' : '',\n\t\t\tparameters.instancingColor ? '#define USE_INSTANCING_COLOR' : '',\n\t\t\tparameters.instancingMorph ? '#define USE_INSTANCING_MORPH' : '',\n\n\t\t\tparameters.useFog && parameters.fog ? '#define USE_FOG' : '',\n\t\t\tparameters.useFog && parameters.fogExp2 ? '#define FOG_EXP2' : '',\n\n\t\t\tparameters.map ? '#define USE_MAP' : '',\n\t\t\tparameters.envMap ? '#define USE_ENVMAP' : '',\n\t\t\tparameters.envMap ? '#define ' + envMapModeDefine : '',\n\t\t\tparameters.lightMap ? '#define USE_LIGHTMAP' : '',\n\t\t\tparameters.aoMap ? '#define USE_AOMAP' : '',\n\t\t\tparameters.bumpMap ? '#define USE_BUMPMAP' : '',\n\t\t\tparameters.normalMap ? '#define USE_NORMALMAP' : '',\n\t\t\tparameters.normalMapObjectSpace ? '#define USE_NORMALMAP_OBJECTSPACE' : '',\n\t\t\tparameters.normalMapTangentSpace ? '#define USE_NORMALMAP_TANGENTSPACE' : '',\n\t\t\tparameters.displacementMap ? '#define USE_DISPLACEMENTMAP' : '',\n\t\t\tparameters.emissiveMap ? '#define USE_EMISSIVEMAP' : '',\n\n\t\t\tparameters.anisotropy ? '#define USE_ANISOTROPY' : '',\n\t\t\tparameters.anisotropyMap ? '#define USE_ANISOTROPYMAP' : '',\n\n\t\t\tparameters.clearcoatMap ? '#define USE_CLEARCOATMAP' : '',\n\t\t\tparameters.clearcoatRoughnessMap ? '#define USE_CLEARCOAT_ROUGHNESSMAP' : '',\n\t\t\tparameters.clearcoatNormalMap ? '#define USE_CLEARCOAT_NORMALMAP' : '',\n\n\t\t\tparameters.iridescenceMap ? '#define USE_IRIDESCENCEMAP' : '',\n\t\t\tparameters.iridescenceThicknessMap ? '#define USE_IRIDESCENCE_THICKNESSMAP' : '',\n\n\t\t\tparameters.specularMap ? '#define USE_SPECULARMAP' : '',\n\t\t\tparameters.specularColorMap ? '#define USE_SPECULAR_COLORMAP' : '',\n\t\t\tparameters.specularIntensityMap ? '#define USE_SPECULAR_INTENSITYMAP' : '',\n\n\t\t\tparameters.roughnessMap ? '#define USE_ROUGHNESSMAP' : '',\n\t\t\tparameters.metalnessMap ? '#define USE_METALNESSMAP' : '',\n\t\t\tparameters.alphaMap ? '#define USE_ALPHAMAP' : '',\n\t\t\tparameters.alphaHash ? '#define USE_ALPHAHASH' : '',\n\n\t\t\tparameters.transmission ? '#define USE_TRANSMISSION' : '',\n\t\t\tparameters.transmissionMap ? '#define USE_TRANSMISSIONMAP' : '',\n\t\t\tparameters.thicknessMap ? '#define USE_THICKNESSMAP' : '',\n\n\t\t\tparameters.sheenColorMap ? '#define USE_SHEEN_COLORMAP' : '',\n\t\t\tparameters.sheenRoughnessMap ? '#define USE_SHEEN_ROUGHNESSMAP' : '',\n\n\t\t\t//\n\n\t\t\tparameters.mapUv ? '#define MAP_UV ' + parameters.mapUv : '',\n\t\t\tparameters.alphaMapUv ? '#define ALPHAMAP_UV ' + parameters.alphaMapUv : '',\n\t\t\tparameters.lightMapUv ? '#define LIGHTMAP_UV ' + parameters.lightMapUv : '',\n\t\t\tparameters.aoMapUv ? '#define AOMAP_UV ' + parameters.aoMapUv : '',\n\t\t\tparameters.emissiveMapUv ? '#define EMISSIVEMAP_UV ' + parameters.emissiveMapUv : '',\n\t\t\tparameters.bumpMapUv ? '#define BUMPMAP_UV ' + parameters.bumpMapUv : '',\n\t\t\tparameters.normalMapUv ? '#define NORMALMAP_UV ' + parameters.normalMapUv : '',\n\t\t\tparameters.displacementMapUv ? '#define DISPLACEMENTMAP_UV ' + parameters.displacementMapUv : '',\n\n\t\t\tparameters.metalnessMapUv ? '#define METALNESSMAP_UV ' + parameters.metalnessMapUv : '',\n\t\t\tparameters.roughnessMapUv ? '#define ROUGHNESSMAP_UV ' + parameters.roughnessMapUv : '',\n\n\t\t\tparameters.anisotropyMapUv ? '#define ANISOTROPYMAP_UV ' + parameters.anisotropyMapUv : '',\n\n\t\t\tparameters.clearcoatMapUv ? '#define CLEARCOATMAP_UV ' + parameters.clearcoatMapUv : '',\n\t\t\tparameters.clearcoatNormalMapUv ? '#define CLEARCOAT_NORMALMAP_UV ' + parameters.clearcoatNormalMapUv : '',\n\t\t\tparameters.clearcoatRoughnessMapUv ? '#define CLEARCOAT_ROUGHNESSMAP_UV ' + parameters.clearcoatRoughnessMapUv : '',\n\n\t\t\tparameters.iridescenceMapUv ? '#define IRIDESCENCEMAP_UV ' + parameters.iridescenceMapUv : '',\n\t\t\tparameters.iridescenceThicknessMapUv ? '#define IRIDESCENCE_THICKNESSMAP_UV ' + parameters.iridescenceThicknessMapUv : '',\n\n\t\t\tparameters.sheenColorMapUv ? '#define SHEEN_COLORMAP_UV ' + parameters.sheenColorMapUv : '',\n\t\t\tparameters.sheenRoughnessMapUv ? '#define SHEEN_ROUGHNESSMAP_UV ' + parameters.sheenRoughnessMapUv : '',\n\n\t\t\tparameters.specularMapUv ? '#define SPECULARMAP_UV ' + parameters.specularMapUv : '',\n\t\t\tparameters.specularColorMapUv ? '#define SPECULAR_COLORMAP_UV ' + parameters.specularColorMapUv : '',\n\t\t\tparameters.specularIntensityMapUv ? '#define SPECULAR_INTENSITYMAP_UV ' + parameters.specularIntensityMapUv : '',\n\n\t\t\tparameters.transmissionMapUv ? '#define TRANSMISSIONMAP_UV ' + parameters.transmissionMapUv : '',\n\t\t\tparameters.thicknessMapUv ? '#define THICKNESSMAP_UV ' + parameters.thicknessMapUv : '',\n\n\t\t\t//\n\n\t\t\tparameters.vertexTangents && parameters.flatShading === false ? '#define USE_TANGENT' : '',\n\t\t\tparameters.vertexColors ? '#define USE_COLOR' : '',\n\t\t\tparameters.vertexAlphas ? '#define USE_COLOR_ALPHA' : '',\n\t\t\tparameters.vertexUv1s ? '#define USE_UV1' : '',\n\t\t\tparameters.vertexUv2s ? '#define USE_UV2' : '',\n\t\t\tparameters.vertexUv3s ? '#define USE_UV3' : '',\n\n\t\t\tparameters.pointsUvs ? '#define USE_POINTS_UV' : '',\n\n\t\t\tparameters.flatShading ? '#define FLAT_SHADED' : '',\n\n\t\t\tparameters.skinning ? '#define USE_SKINNING' : '',\n\n\t\t\tparameters.morphTargets ? '#define USE_MORPHTARGETS' : '',\n\t\t\tparameters.morphNormals && parameters.flatShading === false ? '#define USE_MORPHNORMALS' : '',\n\t\t\t( parameters.morphColors ) ? '#define USE_MORPHCOLORS' : '',\n\t\t\t( parameters.morphTargetsCount > 0 ) ? '#define MORPHTARGETS_TEXTURE_STRIDE ' + parameters.morphTextureStride : '',\n\t\t\t( parameters.morphTargetsCount > 0 ) ? '#define MORPHTARGETS_COUNT ' + parameters.morphTargetsCount : '',\n\t\t\tparameters.doubleSided ? '#define DOUBLE_SIDED' : '',\n\t\t\tparameters.flipSided ? '#define FLIP_SIDED' : '',\n\n\t\t\tparameters.shadowMapEnabled ? '#define USE_SHADOWMAP' : '',\n\t\t\tparameters.shadowMapEnabled ? '#define ' + shadowMapTypeDefine : '',\n\n\t\t\tparameters.sizeAttenuation ? '#define USE_SIZEATTENUATION' : '',\n\n\t\t\tparameters.numLightProbes > 0 ? '#define USE_LIGHT_PROBES' : '',\n\n\t\t\tparameters.logarithmicDepthBuffer ? '#define USE_LOGDEPTHBUF' : '',\n\n\t\t\t'uniform mat4 modelMatrix;',\n\t\t\t'uniform mat4 modelViewMatrix;',\n\t\t\t'uniform mat4 projectionMatrix;',\n\t\t\t'uniform mat4 viewMatrix;',\n\t\t\t'uniform mat3 normalMatrix;',\n\t\t\t'uniform vec3 cameraPosition;',\n\t\t\t'uniform bool isOrthographic;',\n\n\t\t\t'#ifdef USE_INSTANCING',\n\n\t\t\t'\tattribute mat4 instanceMatrix;',\n\n\t\t\t'#endif',\n\n\t\t\t'#ifdef USE_INSTANCING_COLOR',\n\n\t\t\t'\tattribute vec3 instanceColor;',\n\n\t\t\t'#endif',\n\n\t\t\t'#ifdef USE_INSTANCING_MORPH',\n\n\t\t\t'\tuniform sampler2D morphTexture;',\n\n\t\t\t'#endif',\n\n\t\t\t'attribute vec3 position;',\n\t\t\t'attribute vec3 normal;',\n\t\t\t'attribute vec2 uv;',\n\n\t\t\t'#ifdef USE_UV1',\n\n\t\t\t'\tattribute vec2 uv1;',\n\n\t\t\t'#endif',\n\n\t\t\t'#ifdef USE_UV2',\n\n\t\t\t'\tattribute vec2 uv2;',\n\n\t\t\t'#endif',\n\n\t\t\t'#ifdef USE_UV3',\n\n\t\t\t'\tattribute vec2 uv3;',\n\n\t\t\t'#endif',\n\n\t\t\t'#ifdef USE_TANGENT',\n\n\t\t\t'\tattribute vec4 tangent;',\n\n\t\t\t'#endif',\n\n\t\t\t'#if defined( USE_COLOR_ALPHA )',\n\n\t\t\t'\tattribute vec4 color;',\n\n\t\t\t'#elif defined( USE_COLOR )',\n\n\t\t\t'\tattribute vec3 color;',\n\n\t\t\t'#endif',\n\n\t\t\t'#ifdef USE_SKINNING',\n\n\t\t\t'\tattribute vec4 skinIndex;',\n\t\t\t'\tattribute vec4 skinWeight;',\n\n\t\t\t'#endif',\n\n\t\t\t'\\n'\n\n\t\t].filter( filterEmptyLine ).join( '\\n' );\n\n\t\tprefixFragment = [\n\n\t\t\tgeneratePrecision( parameters ),\n\n\t\t\t'#define SHADER_TYPE ' + parameters.shaderType,\n\t\t\t'#define SHADER_NAME ' + parameters.shaderName,\n\n\t\t\tcustomDefines,\n\n\t\t\tparameters.useFog && parameters.fog ? '#define USE_FOG' : '',\n\t\t\tparameters.useFog && parameters.fogExp2 ? '#define FOG_EXP2' : '',\n\n\t\t\tparameters.alphaToCoverage ? '#define ALPHA_TO_COVERAGE' : '',\n\t\t\tparameters.map ? '#define USE_MAP' : '',\n\t\t\tparameters.matcap ? '#define USE_MATCAP' : '',\n\t\t\tparameters.envMap ? '#define USE_ENVMAP' : '',\n\t\t\tparameters.envMap ? '#define ' + envMapTypeDefine : '',\n\t\t\tparameters.envMap ? '#define ' + envMapModeDefine : '',\n\t\t\tparameters.envMap ? '#define ' + envMapBlendingDefine : '',\n\t\t\tenvMapCubeUVSize ? '#define CUBEUV_TEXEL_WIDTH ' + envMapCubeUVSize.texelWidth : '',\n\t\t\tenvMapCubeUVSize ? '#define CUBEUV_TEXEL_HEIGHT ' + envMapCubeUVSize.texelHeight : '',\n\t\t\tenvMapCubeUVSize ? '#define CUBEUV_MAX_MIP ' + envMapCubeUVSize.maxMip + '.0' : '',\n\t\t\tparameters.lightMap ? '#define USE_LIGHTMAP' : '',\n\t\t\tparameters.aoMap ? '#define USE_AOMAP' : '',\n\t\t\tparameters.bumpMap ? '#define USE_BUMPMAP' : '',\n\t\t\tparameters.normalMap ? '#define USE_NORMALMAP' : '',\n\t\t\tparameters.normalMapObjectSpace ? '#define USE_NORMALMAP_OBJECTSPACE' : '',\n\t\t\tparameters.normalMapTangentSpace ? '#define USE_NORMALMAP_TANGENTSPACE' : '',\n\t\t\tparameters.emissiveMap ? '#define USE_EMISSIVEMAP' : '',\n\n\t\t\tparameters.anisotropy ? '#define USE_ANISOTROPY' : '',\n\t\t\tparameters.anisotropyMap ? '#define USE_ANISOTROPYMAP' : '',\n\n\t\t\tparameters.clearcoat ? '#define USE_CLEARCOAT' : '',\n\t\t\tparameters.clearcoatMap ? '#define USE_CLEARCOATMAP' : '',\n\t\t\tparameters.clearcoatRoughnessMap ? '#define USE_CLEARCOAT_ROUGHNESSMAP' : '',\n\t\t\tparameters.clearcoatNormalMap ? '#define USE_CLEARCOAT_NORMALMAP' : '',\n\n\t\t\tparameters.dispersion ? '#define USE_DISPERSION' : '',\n\n\t\t\tparameters.iridescence ? '#define USE_IRIDESCENCE' : '',\n\t\t\tparameters.iridescenceMap ? '#define USE_IRIDESCENCEMAP' : '',\n\t\t\tparameters.iridescenceThicknessMap ? '#define USE_IRIDESCENCE_THICKNESSMAP' : '',\n\n\t\t\tparameters.specularMap ? '#define USE_SPECULARMAP' : '',\n\t\t\tparameters.specularColorMap ? '#define USE_SPECULAR_COLORMAP' : '',\n\t\t\tparameters.specularIntensityMap ? '#define USE_SPECULAR_INTENSITYMAP' : '',\n\n\t\t\tparameters.roughnessMap ? '#define USE_ROUGHNESSMAP' : '',\n\t\t\tparameters.metalnessMap ? '#define USE_METALNESSMAP' : '',\n\n\t\t\tparameters.alphaMap ? '#define USE_ALPHAMAP' : '',\n\t\t\tparameters.alphaTest ? '#define USE_ALPHATEST' : '',\n\t\t\tparameters.alphaHash ? '#define USE_ALPHAHASH' : '',\n\n\t\t\tparameters.sheen ? '#define USE_SHEEN' : '',\n\t\t\tparameters.sheenColorMap ? '#define USE_SHEEN_COLORMAP' : '',\n\t\t\tparameters.sheenRoughnessMap ? '#define USE_SHEEN_ROUGHNESSMAP' : '',\n\n\t\t\tparameters.transmission ? '#define USE_TRANSMISSION' : '',\n\t\t\tparameters.transmissionMap ? '#define USE_TRANSMISSIONMAP' : '',\n\t\t\tparameters.thicknessMap ? '#define USE_THICKNESSMAP' : '',\n\n\t\t\tparameters.vertexTangents && parameters.flatShading === false ? '#define USE_TANGENT' : '',\n\t\t\tparameters.vertexColors || parameters.instancingColor || parameters.batchingColor ? '#define USE_COLOR' : '',\n\t\t\tparameters.vertexAlphas ? '#define USE_COLOR_ALPHA' : '',\n\t\t\tparameters.vertexUv1s ? '#define USE_UV1' : '',\n\t\t\tparameters.vertexUv2s ? '#define USE_UV2' : '',\n\t\t\tparameters.vertexUv3s ? '#define USE_UV3' : '',\n\n\t\t\tparameters.pointsUvs ? '#define USE_POINTS_UV' : '',\n\n\t\t\tparameters.gradientMap ? '#define USE_GRADIENTMAP' : '',\n\n\t\t\tparameters.flatShading ? '#define FLAT_SHADED' : '',\n\n\t\t\tparameters.doubleSided ? '#define DOUBLE_SIDED' : '',\n\t\t\tparameters.flipSided ? '#define FLIP_SIDED' : '',\n\n\t\t\tparameters.shadowMapEnabled ? '#define USE_SHADOWMAP' : '',\n\t\t\tparameters.shadowMapEnabled ? '#define ' + shadowMapTypeDefine : '',\n\n\t\t\tparameters.premultipliedAlpha ? '#define PREMULTIPLIED_ALPHA' : '',\n\n\t\t\tparameters.numLightProbes > 0 ? '#define USE_LIGHT_PROBES' : '',\n\n\t\t\tparameters.decodeVideoTexture ? '#define DECODE_VIDEO_TEXTURE' : '',\n\n\t\t\tparameters.logarithmicDepthBuffer ? '#define USE_LOGDEPTHBUF' : '',\n\n\t\t\t'uniform mat4 viewMatrix;',\n\t\t\t'uniform vec3 cameraPosition;',\n\t\t\t'uniform bool isOrthographic;',\n\n\t\t\t( parameters.toneMapping !== NoToneMapping ) ? '#define TONE_MAPPING' : '',\n\t\t\t( parameters.toneMapping !== NoToneMapping ) ? ShaderChunk[ 'tonemapping_pars_fragment' ] : '', // this code is required here because it is used by the toneMapping() function defined below\n\t\t\t( parameters.toneMapping !== NoToneMapping ) ? getToneMappingFunction( 'toneMapping', parameters.toneMapping ) : '',\n\n\t\t\tparameters.dithering ? '#define DITHERING' : '',\n\t\t\tparameters.opaque ? '#define OPAQUE' : '',\n\n\t\t\tShaderChunk[ 'colorspace_pars_fragment' ], // this code is required here because it is used by the various encoding/decoding function defined below\n\t\t\tgetTexelEncodingFunction( 'linearToOutputTexel', parameters.outputColorSpace ),\n\n\t\t\tparameters.useDepthPacking ? '#define DEPTH_PACKING ' + parameters.depthPacking : '',\n\n\t\t\t'\\n'\n\n\t\t].filter( filterEmptyLine ).join( '\\n' );\n\n\t}\n\n\tvertexShader = resolveIncludes( vertexShader );\n\tvertexShader = replaceLightNums( vertexShader, parameters );\n\tvertexShader = replaceClippingPlaneNums( vertexShader, parameters );\n\n\tfragmentShader = resolveIncludes( fragmentShader );\n\tfragmentShader = replaceLightNums( fragmentShader, parameters );\n\tfragmentShader = replaceClippingPlaneNums( fragmentShader, parameters );\n\n\tvertexShader = unrollLoops( vertexShader );\n\tfragmentShader = unrollLoops( fragmentShader );\n\n\tif ( parameters.isRawShaderMaterial !== true ) {\n\n\t\t// GLSL 3.0 conversion for built-in materials and ShaderMaterial\n\n\t\tversionString = '#version 300 es\\n';\n\n\t\tprefixVertex = [\n\t\t\tcustomVertexExtensions,\n\t\t\t'#define attribute in',\n\t\t\t'#define varying out',\n\t\t\t'#define texture2D texture'\n\t\t].join( '\\n' ) + '\\n' + prefixVertex;\n\n\t\tprefixFragment = [\n\t\t\t'#define varying in',\n\t\t\t( parameters.glslVersion === GLSL3 ) ? '' : 'layout(location = 0) out highp vec4 pc_fragColor;',\n\t\t\t( parameters.glslVersion === GLSL3 ) ? '' : '#define gl_FragColor pc_fragColor',\n\t\t\t'#define gl_FragDepthEXT gl_FragDepth',\n\t\t\t'#define texture2D texture',\n\t\t\t'#define textureCube texture',\n\t\t\t'#define texture2DProj textureProj',\n\t\t\t'#define texture2DLodEXT textureLod',\n\t\t\t'#define texture2DProjLodEXT textureProjLod',\n\t\t\t'#define textureCubeLodEXT textureLod',\n\t\t\t'#define texture2DGradEXT textureGrad',\n\t\t\t'#define texture2DProjGradEXT textureProjGrad',\n\t\t\t'#define textureCubeGradEXT textureGrad'\n\t\t].join( '\\n' ) + '\\n' + prefixFragment;\n\n\t}\n\n\tconst vertexGlsl = versionString + prefixVertex + vertexShader;\n\tconst fragmentGlsl = versionString + prefixFragment + fragmentShader;\n\n\t// console.log( '*VERTEX*', vertexGlsl );\n\t// console.log( '*FRAGMENT*', fragmentGlsl );\n\n\tconst glVertexShader = WebGLShader( gl, gl.VERTEX_SHADER, vertexGlsl );\n\tconst glFragmentShader = WebGLShader( gl, gl.FRAGMENT_SHADER, fragmentGlsl );\n\n\tgl.attachShader( program, glVertexShader );\n\tgl.attachShader( program, glFragmentShader );\n\n\t// Force a particular attribute to index 0.\n\n\tif ( parameters.index0AttributeName !== undefined ) {\n\n\t\tgl.bindAttribLocation( program, 0, parameters.index0AttributeName );\n\n\t} else if ( parameters.morphTargets === true ) {\n\n\t\t// programs with morphTargets displace position out of attribute 0\n\t\tgl.bindAttribLocation( program, 0, 'position' );\n\n\t}\n\n\tgl.linkProgram( program );\n\n\tfunction onFirstUse( self ) {\n\n\t\t// check for link errors\n\t\tif ( renderer.debug.checkShaderErrors ) {\n\n\t\t\tconst programLog = gl.getProgramInfoLog( program ).trim();\n\t\t\tconst vertexLog = gl.getShaderInfoLog( glVertexShader ).trim();\n\t\t\tconst fragmentLog = gl.getShaderInfoLog( glFragmentShader ).trim();\n\n\t\t\tlet runnable = true;\n\t\t\tlet haveDiagnostics = true;\n\n\t\t\tif ( gl.getProgramParameter( program, gl.LINK_STATUS ) === false ) {\n\n\t\t\t\trunnable = false;\n\n\t\t\t\tif ( typeof renderer.debug.onShaderError === 'function' ) {\n\n\t\t\t\t\trenderer.debug.onShaderError( gl, program, glVertexShader, glFragmentShader );\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// default error reporting\n\n\t\t\t\t\tconst vertexErrors = getShaderErrors( gl, glVertexShader, 'vertex' );\n\t\t\t\t\tconst fragmentErrors = getShaderErrors( gl, glFragmentShader, 'fragment' );\n\n\t\t\t\t\tconsole.error(\n\t\t\t\t\t\t'THREE.WebGLProgram: Shader Error ' + gl.getError() + ' - ' +\n\t\t\t\t\t\t'VALIDATE_STATUS ' + gl.getProgramParameter( program, gl.VALIDATE_STATUS ) + '\\n\\n' +\n\t\t\t\t\t\t'Material Name: ' + self.name + '\\n' +\n\t\t\t\t\t\t'Material Type: ' + self.type + '\\n\\n' +\n\t\t\t\t\t\t'Program Info Log: ' + programLog + '\\n' +\n\t\t\t\t\t\tvertexErrors + '\\n' +\n\t\t\t\t\t\tfragmentErrors\n\t\t\t\t\t);\n\n\t\t\t\t}\n\n\t\t\t} else if ( programLog !== '' ) {\n\n\t\t\t\tconsole.warn( 'THREE.WebGLProgram: Program Info Log:', programLog );\n\n\t\t\t} else if ( vertexLog === '' || fragmentLog === '' ) {\n\n\t\t\t\thaveDiagnostics = false;\n\n\t\t\t}\n\n\t\t\tif ( haveDiagnostics ) {\n\n\t\t\t\tself.diagnostics = {\n\n\t\t\t\t\trunnable: runnable,\n\n\t\t\t\t\tprogramLog: programLog,\n\n\t\t\t\t\tvertexShader: {\n\n\t\t\t\t\t\tlog: vertexLog,\n\t\t\t\t\t\tprefix: prefixVertex\n\n\t\t\t\t\t},\n\n\t\t\t\t\tfragmentShader: {\n\n\t\t\t\t\t\tlog: fragmentLog,\n\t\t\t\t\t\tprefix: prefixFragment\n\n\t\t\t\t\t}\n\n\t\t\t\t};\n\n\t\t\t}\n\n\t\t}\n\n\t\t// Clean up\n\n\t\t// Crashes in iOS9 and iOS10. #18402\n\t\t// gl.detachShader( program, glVertexShader );\n\t\t// gl.detachShader( program, glFragmentShader );\n\n\t\tgl.deleteShader( glVertexShader );\n\t\tgl.deleteShader( glFragmentShader );\n\n\t\tcachedUniforms = new WebGLUniforms( gl, program );\n\t\tcachedAttributes = fetchAttributeLocations( gl, program );\n\n\t}\n\n\t// set up caching for uniform locations\n\n\tlet cachedUniforms;\n\n\tthis.getUniforms = function () {\n\n\t\tif ( cachedUniforms === undefined ) {\n\n\t\t\t// Populates cachedUniforms and cachedAttributes\n\t\t\tonFirstUse( this );\n\n\t\t}\n\n\t\treturn cachedUniforms;\n\n\t};\n\n\t// set up caching for attribute locations\n\n\tlet cachedAttributes;\n\n\tthis.getAttributes = function () {\n\n\t\tif ( cachedAttributes === undefined ) {\n\n\t\t\t// Populates cachedAttributes and cachedUniforms\n\t\t\tonFirstUse( this );\n\n\t\t}\n\n\t\treturn cachedAttributes;\n\n\t};\n\n\t// indicate when the program is ready to be used. if the KHR_parallel_shader_compile extension isn't supported,\n\t// flag the program as ready immediately. It may cause a stall when it's first used.\n\n\tlet programReady = ( parameters.rendererExtensionParallelShaderCompile === false );\n\n\tthis.isReady = function () {\n\n\t\tif ( programReady === false ) {\n\n\t\t\tprogramReady = gl.getProgramParameter( program, COMPLETION_STATUS_KHR );\n\n\t\t}\n\n\t\treturn programReady;\n\n\t};\n\n\t// free resource\n\n\tthis.destroy = function () {\n\n\t\tbindingStates.releaseStatesOfProgram( this );\n\n\t\tgl.deleteProgram( program );\n\t\tthis.program = undefined;\n\n\t};\n\n\t//\n\n\tthis.type = parameters.shaderType;\n\tthis.name = parameters.shaderName;\n\tthis.id = programIdCount ++;\n\tthis.cacheKey = cacheKey;\n\tthis.usedTimes = 1;\n\tthis.program = program;\n\tthis.vertexShader = glVertexShader;\n\tthis.fragmentShader = glFragmentShader;\n\n\treturn this;\n\n}\n\nlet _id$1 = 0;\n\nclass WebGLShaderCache {\n\n\tconstructor() {\n\n\t\tthis.shaderCache = new Map();\n\t\tthis.materialCache = new Map();\n\n\t}\n\n\tupdate( material ) {\n\n\t\tconst vertexShader = material.vertexShader;\n\t\tconst fragmentShader = material.fragmentShader;\n\n\t\tconst vertexShaderStage = this._getShaderStage( vertexShader );\n\t\tconst fragmentShaderStage = this._getShaderStage( fragmentShader );\n\n\t\tconst materialShaders = this._getShaderCacheForMaterial( material );\n\n\t\tif ( materialShaders.has( vertexShaderStage ) === false ) {\n\n\t\t\tmaterialShaders.add( vertexShaderStage );\n\t\t\tvertexShaderStage.usedTimes ++;\n\n\t\t}\n\n\t\tif ( materialShaders.has( fragmentShaderStage ) === false ) {\n\n\t\t\tmaterialShaders.add( fragmentShaderStage );\n\t\t\tfragmentShaderStage.usedTimes ++;\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tremove( material ) {\n\n\t\tconst materialShaders = this.materialCache.get( material );\n\n\t\tfor ( const shaderStage of materialShaders ) {\n\n\t\t\tshaderStage.usedTimes --;\n\n\t\t\tif ( shaderStage.usedTimes === 0 ) this.shaderCache.delete( shaderStage.code );\n\n\t\t}\n\n\t\tthis.materialCache.delete( material );\n\n\t\treturn this;\n\n\t}\n\n\tgetVertexShaderID( material ) {\n\n\t\treturn this._getShaderStage( material.vertexShader ).id;\n\n\t}\n\n\tgetFragmentShaderID( material ) {\n\n\t\treturn this._getShaderStage( material.fragmentShader ).id;\n\n\t}\n\n\tdispose() {\n\n\t\tthis.shaderCache.clear();\n\t\tthis.materialCache.clear();\n\n\t}\n\n\t_getShaderCacheForMaterial( material ) {\n\n\t\tconst cache = this.materialCache;\n\t\tlet set = cache.get( material );\n\n\t\tif ( set === undefined ) {\n\n\t\t\tset = new Set();\n\t\t\tcache.set( material, set );\n\n\t\t}\n\n\t\treturn set;\n\n\t}\n\n\t_getShaderStage( code ) {\n\n\t\tconst cache = this.shaderCache;\n\t\tlet stage = cache.get( code );\n\n\t\tif ( stage === undefined ) {\n\n\t\t\tstage = new WebGLShaderStage( code );\n\t\t\tcache.set( code, stage );\n\n\t\t}\n\n\t\treturn stage;\n\n\t}\n\n}\n\nclass WebGLShaderStage {\n\n\tconstructor( code ) {\n\n\t\tthis.id = _id$1 ++;\n\n\t\tthis.code = code;\n\t\tthis.usedTimes = 0;\n\n\t}\n\n}\n\nfunction WebGLPrograms( renderer, cubemaps, cubeuvmaps, extensions, capabilities, bindingStates, clipping ) {\n\n\tconst _programLayers = new Layers();\n\tconst _customShaders = new WebGLShaderCache();\n\tconst _activeChannels = new Set();\n\tconst programs = [];\n\n\tconst logarithmicDepthBuffer = capabilities.logarithmicDepthBuffer;\n\tconst SUPPORTS_VERTEX_TEXTURES = capabilities.vertexTextures;\n\n\tlet precision = capabilities.precision;\n\n\tconst shaderIDs = {\n\t\tMeshDepthMaterial: 'depth',\n\t\tMeshDistanceMaterial: 'distanceRGBA',\n\t\tMeshNormalMaterial: 'normal',\n\t\tMeshBasicMaterial: 'basic',\n\t\tMeshLambertMaterial: 'lambert',\n\t\tMeshPhongMaterial: 'phong',\n\t\tMeshToonMaterial: 'toon',\n\t\tMeshStandardMaterial: 'physical',\n\t\tMeshPhysicalMaterial: 'physical',\n\t\tMeshMatcapMaterial: 'matcap',\n\t\tLineBasicMaterial: 'basic',\n\t\tLineDashedMaterial: 'dashed',\n\t\tPointsMaterial: 'points',\n\t\tShadowMaterial: 'shadow',\n\t\tSpriteMaterial: 'sprite'\n\t};\n\n\tfunction getChannel( value ) {\n\n\t\t_activeChannels.add( value );\n\n\t\tif ( value === 0 ) return 'uv';\n\n\t\treturn `uv${ value }`;\n\n\t}\n\n\tfunction getParameters( material, lights, shadows, scene, object ) {\n\n\t\tconst fog = scene.fog;\n\t\tconst geometry = object.geometry;\n\t\tconst environment = material.isMeshStandardMaterial ? scene.environment : null;\n\n\t\tconst envMap = ( material.isMeshStandardMaterial ? cubeuvmaps : cubemaps ).get( material.envMap || environment );\n\t\tconst envMapCubeUVHeight = ( !! envMap ) && ( envMap.mapping === CubeUVReflectionMapping ) ? envMap.image.height : null;\n\n\t\tconst shaderID = shaderIDs[ material.type ];\n\n\t\t// heuristics to create shader parameters according to lights in the scene\n\t\t// (not to blow over maxLights budget)\n\n\t\tif ( material.precision !== null ) {\n\n\t\t\tprecision = capabilities.getMaxPrecision( material.precision );\n\n\t\t\tif ( precision !== material.precision ) {\n\n\t\t\t\tconsole.warn( 'THREE.WebGLProgram.getParameters:', material.precision, 'not supported, using', precision, 'instead.' );\n\n\t\t\t}\n\n\t\t}\n\n\t\t//\n\n\t\tconst morphAttribute = geometry.morphAttributes.position || geometry.morphAttributes.normal || geometry.morphAttributes.color;\n\t\tconst morphTargetsCount = ( morphAttribute !== undefined ) ? morphAttribute.length : 0;\n\n\t\tlet morphTextureStride = 0;\n\n\t\tif ( geometry.morphAttributes.position !== undefined ) morphTextureStride = 1;\n\t\tif ( geometry.morphAttributes.normal !== undefined ) morphTextureStride = 2;\n\t\tif ( geometry.morphAttributes.color !== undefined ) morphTextureStride = 3;\n\n\t\t//\n\n\t\tlet vertexShader, fragmentShader;\n\t\tlet customVertexShaderID, customFragmentShaderID;\n\n\t\tif ( shaderID ) {\n\n\t\t\tconst shader = ShaderLib[ shaderID ];\n\n\t\t\tvertexShader = shader.vertexShader;\n\t\t\tfragmentShader = shader.fragmentShader;\n\n\t\t} else {\n\n\t\t\tvertexShader = material.vertexShader;\n\t\t\tfragmentShader = material.fragmentShader;\n\n\t\t\t_customShaders.update( material );\n\n\t\t\tcustomVertexShaderID = _customShaders.getVertexShaderID( material );\n\t\t\tcustomFragmentShaderID = _customShaders.getFragmentShaderID( material );\n\n\t\t}\n\n\t\tconst currentRenderTarget = renderer.getRenderTarget();\n\n\t\tconst IS_INSTANCEDMESH = object.isInstancedMesh === true;\n\t\tconst IS_BATCHEDMESH = object.isBatchedMesh === true;\n\n\t\tconst HAS_MAP = !! material.map;\n\t\tconst HAS_MATCAP = !! material.matcap;\n\t\tconst HAS_ENVMAP = !! envMap;\n\t\tconst HAS_AOMAP = !! material.aoMap;\n\t\tconst HAS_LIGHTMAP = !! material.lightMap;\n\t\tconst HAS_BUMPMAP = !! material.bumpMap;\n\t\tconst HAS_NORMALMAP = !! material.normalMap;\n\t\tconst HAS_DISPLACEMENTMAP = !! material.displacementMap;\n\t\tconst HAS_EMISSIVEMAP = !! material.emissiveMap;\n\n\t\tconst HAS_METALNESSMAP = !! material.metalnessMap;\n\t\tconst HAS_ROUGHNESSMAP = !! material.roughnessMap;\n\n\t\tconst HAS_ANISOTROPY = material.anisotropy > 0;\n\t\tconst HAS_CLEARCOAT = material.clearcoat > 0;\n\t\tconst HAS_DISPERSION = material.dispersion > 0;\n\t\tconst HAS_IRIDESCENCE = material.iridescence > 0;\n\t\tconst HAS_SHEEN = material.sheen > 0;\n\t\tconst HAS_TRANSMISSION = material.transmission > 0;\n\n\t\tconst HAS_ANISOTROPYMAP = HAS_ANISOTROPY && !! material.anisotropyMap;\n\n\t\tconst HAS_CLEARCOATMAP = HAS_CLEARCOAT && !! material.clearcoatMap;\n\t\tconst HAS_CLEARCOAT_NORMALMAP = HAS_CLEARCOAT && !! material.clearcoatNormalMap;\n\t\tconst HAS_CLEARCOAT_ROUGHNESSMAP = HAS_CLEARCOAT && !! material.clearcoatRoughnessMap;\n\n\t\tconst HAS_IRIDESCENCEMAP = HAS_IRIDESCENCE && !! material.iridescenceMap;\n\t\tconst HAS_IRIDESCENCE_THICKNESSMAP = HAS_IRIDESCENCE && !! material.iridescenceThicknessMap;\n\n\t\tconst HAS_SHEEN_COLORMAP = HAS_SHEEN && !! material.sheenColorMap;\n\t\tconst HAS_SHEEN_ROUGHNESSMAP = HAS_SHEEN && !! material.sheenRoughnessMap;\n\n\t\tconst HAS_SPECULARMAP = !! material.specularMap;\n\t\tconst HAS_SPECULAR_COLORMAP = !! material.specularColorMap;\n\t\tconst HAS_SPECULAR_INTENSITYMAP = !! material.specularIntensityMap;\n\n\t\tconst HAS_TRANSMISSIONMAP = HAS_TRANSMISSION && !! material.transmissionMap;\n\t\tconst HAS_THICKNESSMAP = HAS_TRANSMISSION && !! material.thicknessMap;\n\n\t\tconst HAS_GRADIENTMAP = !! material.gradientMap;\n\n\t\tconst HAS_ALPHAMAP = !! material.alphaMap;\n\n\t\tconst HAS_ALPHATEST = material.alphaTest > 0;\n\n\t\tconst HAS_ALPHAHASH = !! material.alphaHash;\n\n\t\tconst HAS_EXTENSIONS = !! material.extensions;\n\n\t\tlet toneMapping = NoToneMapping;\n\n\t\tif ( material.toneMapped ) {\n\n\t\t\tif ( currentRenderTarget === null || currentRenderTarget.isXRRenderTarget === true ) {\n\n\t\t\t\ttoneMapping = renderer.toneMapping;\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst parameters = {\n\n\t\t\tshaderID: shaderID,\n\t\t\tshaderType: material.type,\n\t\t\tshaderName: material.name,\n\n\t\t\tvertexShader: vertexShader,\n\t\t\tfragmentShader: fragmentShader,\n\t\t\tdefines: material.defines,\n\n\t\t\tcustomVertexShaderID: customVertexShaderID,\n\t\t\tcustomFragmentShaderID: customFragmentShaderID,\n\n\t\t\tisRawShaderMaterial: material.isRawShaderMaterial === true,\n\t\t\tglslVersion: material.glslVersion,\n\n\t\t\tprecision: precision,\n\n\t\t\tbatching: IS_BATCHEDMESH,\n\t\t\tbatchingColor: IS_BATCHEDMESH && object._colorsTexture !== null,\n\t\t\tinstancing: IS_INSTANCEDMESH,\n\t\t\tinstancingColor: IS_INSTANCEDMESH && object.instanceColor !== null,\n\t\t\tinstancingMorph: IS_INSTANCEDMESH && object.morphTexture !== null,\n\n\t\t\tsupportsVertexTextures: SUPPORTS_VERTEX_TEXTURES,\n\t\t\toutputColorSpace: ( currentRenderTarget === null ) ? renderer.outputColorSpace : ( currentRenderTarget.isXRRenderTarget === true ? currentRenderTarget.texture.colorSpace : LinearSRGBColorSpace ),\n\t\t\talphaToCoverage: !! material.alphaToCoverage,\n\n\t\t\tmap: HAS_MAP,\n\t\t\tmatcap: HAS_MATCAP,\n\t\t\tenvMap: HAS_ENVMAP,\n\t\t\tenvMapMode: HAS_ENVMAP && envMap.mapping,\n\t\t\tenvMapCubeUVHeight: envMapCubeUVHeight,\n\t\t\taoMap: HAS_AOMAP,\n\t\t\tlightMap: HAS_LIGHTMAP,\n\t\t\tbumpMap: HAS_BUMPMAP,\n\t\t\tnormalMap: HAS_NORMALMAP,\n\t\t\tdisplacementMap: SUPPORTS_VERTEX_TEXTURES && HAS_DISPLACEMENTMAP,\n\t\t\temissiveMap: HAS_EMISSIVEMAP,\n\n\t\t\tnormalMapObjectSpace: HAS_NORMALMAP && material.normalMapType === ObjectSpaceNormalMap,\n\t\t\tnormalMapTangentSpace: HAS_NORMALMAP && material.normalMapType === TangentSpaceNormalMap,\n\n\t\t\tmetalnessMap: HAS_METALNESSMAP,\n\t\t\troughnessMap: HAS_ROUGHNESSMAP,\n\n\t\t\tanisotropy: HAS_ANISOTROPY,\n\t\t\tanisotropyMap: HAS_ANISOTROPYMAP,\n\n\t\t\tclearcoat: HAS_CLEARCOAT,\n\t\t\tclearcoatMap: HAS_CLEARCOATMAP,\n\t\t\tclearcoatNormalMap: HAS_CLEARCOAT_NORMALMAP,\n\t\t\tclearcoatRoughnessMap: HAS_CLEARCOAT_ROUGHNESSMAP,\n\n\t\t\tdispersion: HAS_DISPERSION,\n\n\t\t\tiridescence: HAS_IRIDESCENCE,\n\t\t\tiridescenceMap: HAS_IRIDESCENCEMAP,\n\t\t\tiridescenceThicknessMap: HAS_IRIDESCENCE_THICKNESSMAP,\n\n\t\t\tsheen: HAS_SHEEN,\n\t\t\tsheenColorMap: HAS_SHEEN_COLORMAP,\n\t\t\tsheenRoughnessMap: HAS_SHEEN_ROUGHNESSMAP,\n\n\t\t\tspecularMap: HAS_SPECULARMAP,\n\t\t\tspecularColorMap: HAS_SPECULAR_COLORMAP,\n\t\t\tspecularIntensityMap: HAS_SPECULAR_INTENSITYMAP,\n\n\t\t\ttransmission: HAS_TRANSMISSION,\n\t\t\ttransmissionMap: HAS_TRANSMISSIONMAP,\n\t\t\tthicknessMap: HAS_THICKNESSMAP,\n\n\t\t\tgradientMap: HAS_GRADIENTMAP,\n\n\t\t\topaque: material.transparent === false && material.blending === NormalBlending && material.alphaToCoverage === false,\n\n\t\t\talphaMap: HAS_ALPHAMAP,\n\t\t\talphaTest: HAS_ALPHATEST,\n\t\t\talphaHash: HAS_ALPHAHASH,\n\n\t\t\tcombine: material.combine,\n\n\t\t\t//\n\n\t\t\tmapUv: HAS_MAP && getChannel( material.map.channel ),\n\t\t\taoMapUv: HAS_AOMAP && getChannel( material.aoMap.channel ),\n\t\t\tlightMapUv: HAS_LIGHTMAP && getChannel( material.lightMap.channel ),\n\t\t\tbumpMapUv: HAS_BUMPMAP && getChannel( material.bumpMap.channel ),\n\t\t\tnormalMapUv: HAS_NORMALMAP && getChannel( material.normalMap.channel ),\n\t\t\tdisplacementMapUv: HAS_DISPLACEMENTMAP && getChannel( material.displacementMap.channel ),\n\t\t\temissiveMapUv: HAS_EMISSIVEMAP && getChannel( material.emissiveMap.channel ),\n\n\t\t\tmetalnessMapUv: HAS_METALNESSMAP && getChannel( material.metalnessMap.channel ),\n\t\t\troughnessMapUv: HAS_ROUGHNESSMAP && getChannel( material.roughnessMap.channel ),\n\n\t\t\tanisotropyMapUv: HAS_ANISOTROPYMAP && getChannel( material.anisotropyMap.channel ),\n\n\t\t\tclearcoatMapUv: HAS_CLEARCOATMAP && getChannel( material.clearcoatMap.channel ),\n\t\t\tclearcoatNormalMapUv: HAS_CLEARCOAT_NORMALMAP && getChannel( material.clearcoatNormalMap.channel ),\n\t\t\tclearcoatRoughnessMapUv: HAS_CLEARCOAT_ROUGHNESSMAP && getChannel( material.clearcoatRoughnessMap.channel ),\n\n\t\t\tiridescenceMapUv: HAS_IRIDESCENCEMAP && getChannel( material.iridescenceMap.channel ),\n\t\t\tiridescenceThicknessMapUv: HAS_IRIDESCENCE_THICKNESSMAP && getChannel( material.iridescenceThicknessMap.channel ),\n\n\t\t\tsheenColorMapUv: HAS_SHEEN_COLORMAP && getChannel( material.sheenColorMap.channel ),\n\t\t\tsheenRoughnessMapUv: HAS_SHEEN_ROUGHNESSMAP && getChannel( material.sheenRoughnessMap.channel ),\n\n\t\t\tspecularMapUv: HAS_SPECULARMAP && getChannel( material.specularMap.channel ),\n\t\t\tspecularColorMapUv: HAS_SPECULAR_COLORMAP && getChannel( material.specularColorMap.channel ),\n\t\t\tspecularIntensityMapUv: HAS_SPECULAR_INTENSITYMAP && getChannel( material.specularIntensityMap.channel ),\n\n\t\t\ttransmissionMapUv: HAS_TRANSMISSIONMAP && getChannel( material.transmissionMap.channel ),\n\t\t\tthicknessMapUv: HAS_THICKNESSMAP && getChannel( material.thicknessMap.channel ),\n\n\t\t\talphaMapUv: HAS_ALPHAMAP && getChannel( material.alphaMap.channel ),\n\n\t\t\t//\n\n\t\t\tvertexTangents: !! geometry.attributes.tangent && ( HAS_NORMALMAP || HAS_ANISOTROPY ),\n\t\t\tvertexColors: material.vertexColors,\n\t\t\tvertexAlphas: material.vertexColors === true && !! geometry.attributes.color && geometry.attributes.color.itemSize === 4,\n\n\t\t\tpointsUvs: object.isPoints === true && !! geometry.attributes.uv && ( HAS_MAP || HAS_ALPHAMAP ),\n\n\t\t\tfog: !! fog,\n\t\t\tuseFog: material.fog === true,\n\t\t\tfogExp2: ( !! fog && fog.isFogExp2 ),\n\n\t\t\tflatShading: material.flatShading === true,\n\n\t\t\tsizeAttenuation: material.sizeAttenuation === true,\n\t\t\tlogarithmicDepthBuffer: logarithmicDepthBuffer,\n\n\t\t\tskinning: object.isSkinnedMesh === true,\n\n\t\t\tmorphTargets: geometry.morphAttributes.position !== undefined,\n\t\t\tmorphNormals: geometry.morphAttributes.normal !== undefined,\n\t\t\tmorphColors: geometry.morphAttributes.color !== undefined,\n\t\t\tmorphTargetsCount: morphTargetsCount,\n\t\t\tmorphTextureStride: morphTextureStride,\n\n\t\t\tnumDirLights: lights.directional.length,\n\t\t\tnumPointLights: lights.point.length,\n\t\t\tnumSpotLights: lights.spot.length,\n\t\t\tnumSpotLightMaps: lights.spotLightMap.length,\n\t\t\tnumRectAreaLights: lights.rectArea.length,\n\t\t\tnumHemiLights: lights.hemi.length,\n\n\t\t\tnumDirLightShadows: lights.directionalShadowMap.length,\n\t\t\tnumPointLightShadows: lights.pointShadowMap.length,\n\t\t\tnumSpotLightShadows: lights.spotShadowMap.length,\n\t\t\tnumSpotLightShadowsWithMaps: lights.numSpotLightShadowsWithMaps,\n\n\t\t\tnumLightProbes: lights.numLightProbes,\n\n\t\t\tnumClippingPlanes: clipping.numPlanes,\n\t\t\tnumClipIntersection: clipping.numIntersection,\n\n\t\t\tdithering: material.dithering,\n\n\t\t\tshadowMapEnabled: renderer.shadowMap.enabled && shadows.length > 0,\n\t\t\tshadowMapType: renderer.shadowMap.type,\n\n\t\t\ttoneMapping: toneMapping,\n\n\t\t\tdecodeVideoTexture: HAS_MAP && ( material.map.isVideoTexture === true ) && ( ColorManagement.getTransfer( material.map.colorSpace ) === SRGBTransfer ),\n\n\t\t\tpremultipliedAlpha: material.premultipliedAlpha,\n\n\t\t\tdoubleSided: material.side === DoubleSide,\n\t\t\tflipSided: material.side === BackSide,\n\n\t\t\tuseDepthPacking: material.depthPacking >= 0,\n\t\t\tdepthPacking: material.depthPacking || 0,\n\n\t\t\tindex0AttributeName: material.index0AttributeName,\n\n\t\t\textensionClipCullDistance: HAS_EXTENSIONS && material.extensions.clipCullDistance === true && extensions.has( 'WEBGL_clip_cull_distance' ),\n\t\t\textensionMultiDraw: HAS_EXTENSIONS && material.extensions.multiDraw === true && extensions.has( 'WEBGL_multi_draw' ),\n\n\t\t\trendererExtensionParallelShaderCompile: extensions.has( 'KHR_parallel_shader_compile' ),\n\n\t\t\tcustomProgramCacheKey: material.customProgramCacheKey()\n\n\t\t};\n\n\t\t// the usage of getChannel() determines the active texture channels for this shader\n\n\t\tparameters.vertexUv1s = _activeChannels.has( 1 );\n\t\tparameters.vertexUv2s = _activeChannels.has( 2 );\n\t\tparameters.vertexUv3s = _activeChannels.has( 3 );\n\n\t\t_activeChannels.clear();\n\n\t\treturn parameters;\n\n\t}\n\n\tfunction getProgramCacheKey( parameters ) {\n\n\t\tconst array = [];\n\n\t\tif ( parameters.shaderID ) {\n\n\t\t\tarray.push( parameters.shaderID );\n\n\t\t} else {\n\n\t\t\tarray.push( parameters.customVertexShaderID );\n\t\t\tarray.push( parameters.customFragmentShaderID );\n\n\t\t}\n\n\t\tif ( parameters.defines !== undefined ) {\n\n\t\t\tfor ( const name in parameters.defines ) {\n\n\t\t\t\tarray.push( name );\n\t\t\t\tarray.push( parameters.defines[ name ] );\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( parameters.isRawShaderMaterial === false ) {\n\n\t\t\tgetProgramCacheKeyParameters( array, parameters );\n\t\t\tgetProgramCacheKeyBooleans( array, parameters );\n\t\t\tarray.push( renderer.outputColorSpace );\n\n\t\t}\n\n\t\tarray.push( parameters.customProgramCacheKey );\n\n\t\treturn array.join();\n\n\t}\n\n\tfunction getProgramCacheKeyParameters( array, parameters ) {\n\n\t\tarray.push( parameters.precision );\n\t\tarray.push( parameters.outputColorSpace );\n\t\tarray.push( parameters.envMapMode );\n\t\tarray.push( parameters.envMapCubeUVHeight );\n\t\tarray.push( parameters.mapUv );\n\t\tarray.push( parameters.alphaMapUv );\n\t\tarray.push( parameters.lightMapUv );\n\t\tarray.push( parameters.aoMapUv );\n\t\tarray.push( parameters.bumpMapUv );\n\t\tarray.push( parameters.normalMapUv );\n\t\tarray.push( parameters.displacementMapUv );\n\t\tarray.push( parameters.emissiveMapUv );\n\t\tarray.push( parameters.metalnessMapUv );\n\t\tarray.push( parameters.roughnessMapUv );\n\t\tarray.push( parameters.anisotropyMapUv );\n\t\tarray.push( parameters.clearcoatMapUv );\n\t\tarray.push( parameters.clearcoatNormalMapUv );\n\t\tarray.push( parameters.clearcoatRoughnessMapUv );\n\t\tarray.push( parameters.iridescenceMapUv );\n\t\tarray.push( parameters.iridescenceThicknessMapUv );\n\t\tarray.push( parameters.sheenColorMapUv );\n\t\tarray.push( parameters.sheenRoughnessMapUv );\n\t\tarray.push( parameters.specularMapUv );\n\t\tarray.push( parameters.specularColorMapUv );\n\t\tarray.push( parameters.specularIntensityMapUv );\n\t\tarray.push( parameters.transmissionMapUv );\n\t\tarray.push( parameters.thicknessMapUv );\n\t\tarray.push( parameters.combine );\n\t\tarray.push( parameters.fogExp2 );\n\t\tarray.push( parameters.sizeAttenuation );\n\t\tarray.push( parameters.morphTargetsCount );\n\t\tarray.push( parameters.morphAttributeCount );\n\t\tarray.push( parameters.numDirLights );\n\t\tarray.push( parameters.numPointLights );\n\t\tarray.push( parameters.numSpotLights );\n\t\tarray.push( parameters.numSpotLightMaps );\n\t\tarray.push( parameters.numHemiLights );\n\t\tarray.push( parameters.numRectAreaLights );\n\t\tarray.push( parameters.numDirLightShadows );\n\t\tarray.push( parameters.numPointLightShadows );\n\t\tarray.push( parameters.numSpotLightShadows );\n\t\tarray.push( parameters.numSpotLightShadowsWithMaps );\n\t\tarray.push( parameters.numLightProbes );\n\t\tarray.push( parameters.shadowMapType );\n\t\tarray.push( parameters.toneMapping );\n\t\tarray.push( parameters.numClippingPlanes );\n\t\tarray.push( parameters.numClipIntersection );\n\t\tarray.push( parameters.depthPacking );\n\n\t}\n\n\tfunction getProgramCacheKeyBooleans( array, parameters ) {\n\n\t\t_programLayers.disableAll();\n\n\t\tif ( parameters.supportsVertexTextures )\n\t\t\t_programLayers.enable( 0 );\n\t\tif ( parameters.instancing )\n\t\t\t_programLayers.enable( 1 );\n\t\tif ( parameters.instancingColor )\n\t\t\t_programLayers.enable( 2 );\n\t\tif ( parameters.instancingMorph )\n\t\t\t_programLayers.enable( 3 );\n\t\tif ( parameters.matcap )\n\t\t\t_programLayers.enable( 4 );\n\t\tif ( parameters.envMap )\n\t\t\t_programLayers.enable( 5 );\n\t\tif ( parameters.normalMapObjectSpace )\n\t\t\t_programLayers.enable( 6 );\n\t\tif ( parameters.normalMapTangentSpace )\n\t\t\t_programLayers.enable( 7 );\n\t\tif ( parameters.clearcoat )\n\t\t\t_programLayers.enable( 8 );\n\t\tif ( parameters.iridescence )\n\t\t\t_programLayers.enable( 9 );\n\t\tif ( parameters.alphaTest )\n\t\t\t_programLayers.enable( 10 );\n\t\tif ( parameters.vertexColors )\n\t\t\t_programLayers.enable( 11 );\n\t\tif ( parameters.vertexAlphas )\n\t\t\t_programLayers.enable( 12 );\n\t\tif ( parameters.vertexUv1s )\n\t\t\t_programLayers.enable( 13 );\n\t\tif ( parameters.vertexUv2s )\n\t\t\t_programLayers.enable( 14 );\n\t\tif ( parameters.vertexUv3s )\n\t\t\t_programLayers.enable( 15 );\n\t\tif ( parameters.vertexTangents )\n\t\t\t_programLayers.enable( 16 );\n\t\tif ( parameters.anisotropy )\n\t\t\t_programLayers.enable( 17 );\n\t\tif ( parameters.alphaHash )\n\t\t\t_programLayers.enable( 18 );\n\t\tif ( parameters.batching )\n\t\t\t_programLayers.enable( 19 );\n\t\tif ( parameters.dispersion )\n\t\t\t_programLayers.enable( 20 );\n\t\tif ( parameters.batchingColor )\n\t\t\t_programLayers.enable( 21 );\n\n\t\tarray.push( _programLayers.mask );\n\t\t_programLayers.disableAll();\n\n\t\tif ( parameters.fog )\n\t\t\t_programLayers.enable( 0 );\n\t\tif ( parameters.useFog )\n\t\t\t_programLayers.enable( 1 );\n\t\tif ( parameters.flatShading )\n\t\t\t_programLayers.enable( 2 );\n\t\tif ( parameters.logarithmicDepthBuffer )\n\t\t\t_programLayers.enable( 3 );\n\t\tif ( parameters.skinning )\n\t\t\t_programLayers.enable( 4 );\n\t\tif ( parameters.morphTargets )\n\t\t\t_programLayers.enable( 5 );\n\t\tif ( parameters.morphNormals )\n\t\t\t_programLayers.enable( 6 );\n\t\tif ( parameters.morphColors )\n\t\t\t_programLayers.enable( 7 );\n\t\tif ( parameters.premultipliedAlpha )\n\t\t\t_programLayers.enable( 8 );\n\t\tif ( parameters.shadowMapEnabled )\n\t\t\t_programLayers.enable( 9 );\n\t\tif ( parameters.doubleSided )\n\t\t\t_programLayers.enable( 10 );\n\t\tif ( parameters.flipSided )\n\t\t\t_programLayers.enable( 11 );\n\t\tif ( parameters.useDepthPacking )\n\t\t\t_programLayers.enable( 12 );\n\t\tif ( parameters.dithering )\n\t\t\t_programLayers.enable( 13 );\n\t\tif ( parameters.transmission )\n\t\t\t_programLayers.enable( 14 );\n\t\tif ( parameters.sheen )\n\t\t\t_programLayers.enable( 15 );\n\t\tif ( parameters.opaque )\n\t\t\t_programLayers.enable( 16 );\n\t\tif ( parameters.pointsUvs )\n\t\t\t_programLayers.enable( 17 );\n\t\tif ( parameters.decodeVideoTexture )\n\t\t\t_programLayers.enable( 18 );\n\t\tif ( parameters.alphaToCoverage )\n\t\t\t_programLayers.enable( 19 );\n\n\t\tarray.push( _programLayers.mask );\n\n\t}\n\n\tfunction getUniforms( material ) {\n\n\t\tconst shaderID = shaderIDs[ material.type ];\n\t\tlet uniforms;\n\n\t\tif ( shaderID ) {\n\n\t\t\tconst shader = ShaderLib[ shaderID ];\n\t\t\tuniforms = UniformsUtils.clone( shader.uniforms );\n\n\t\t} else {\n\n\t\t\tuniforms = material.uniforms;\n\n\t\t}\n\n\t\treturn uniforms;\n\n\t}\n\n\tfunction acquireProgram( parameters, cacheKey ) {\n\n\t\tlet program;\n\n\t\t// Check if code has been already compiled\n\t\tfor ( let p = 0, pl = programs.length; p < pl; p ++ ) {\n\n\t\t\tconst preexistingProgram = programs[ p ];\n\n\t\t\tif ( preexistingProgram.cacheKey === cacheKey ) {\n\n\t\t\t\tprogram = preexistingProgram;\n\t\t\t\t++ program.usedTimes;\n\n\t\t\t\tbreak;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( program === undefined ) {\n\n\t\t\tprogram = new WebGLProgram( renderer, cacheKey, parameters, bindingStates );\n\t\t\tprograms.push( program );\n\n\t\t}\n\n\t\treturn program;\n\n\t}\n\n\tfunction releaseProgram( program ) {\n\n\t\tif ( -- program.usedTimes === 0 ) {\n\n\t\t\t// Remove from unordered set\n\t\t\tconst i = programs.indexOf( program );\n\t\t\tprograms[ i ] = programs[ programs.length - 1 ];\n\t\t\tprograms.pop();\n\n\t\t\t// Free WebGL resources\n\t\t\tprogram.destroy();\n\n\t\t}\n\n\t}\n\n\tfunction releaseShaderCache( material ) {\n\n\t\t_customShaders.remove( material );\n\n\t}\n\n\tfunction dispose() {\n\n\t\t_customShaders.dispose();\n\n\t}\n\n\treturn {\n\t\tgetParameters: getParameters,\n\t\tgetProgramCacheKey: getProgramCacheKey,\n\t\tgetUniforms: getUniforms,\n\t\tacquireProgram: acquireProgram,\n\t\treleaseProgram: releaseProgram,\n\t\treleaseShaderCache: releaseShaderCache,\n\t\t// Exposed for resource monitoring & error feedback via renderer.info:\n\t\tprograms: programs,\n\t\tdispose: dispose\n\t};\n\n}\n\nfunction WebGLProperties() {\n\n\tlet properties = new WeakMap();\n\n\tfunction get( object ) {\n\n\t\tlet map = properties.get( object );\n\n\t\tif ( map === undefined ) {\n\n\t\t\tmap = {};\n\t\t\tproperties.set( object, map );\n\n\t\t}\n\n\t\treturn map;\n\n\t}\n\n\tfunction remove( object ) {\n\n\t\tproperties.delete( object );\n\n\t}\n\n\tfunction update( object, key, value ) {\n\n\t\tproperties.get( object )[ key ] = value;\n\n\t}\n\n\tfunction dispose() {\n\n\t\tproperties = new WeakMap();\n\n\t}\n\n\treturn {\n\t\tget: get,\n\t\tremove: remove,\n\t\tupdate: update,\n\t\tdispose: dispose\n\t};\n\n}\n\nfunction painterSortStable( a, b ) {\n\n\tif ( a.groupOrder !== b.groupOrder ) {\n\n\t\treturn a.groupOrder - b.groupOrder;\n\n\t} else if ( a.renderOrder !== b.renderOrder ) {\n\n\t\treturn a.renderOrder - b.renderOrder;\n\n\t} else if ( a.material.id !== b.material.id ) {\n\n\t\treturn a.material.id - b.material.id;\n\n\t} else if ( a.z !== b.z ) {\n\n\t\treturn a.z - b.z;\n\n\t} else {\n\n\t\treturn a.id - b.id;\n\n\t}\n\n}\n\nfunction reversePainterSortStable( a, b ) {\n\n\tif ( a.groupOrder !== b.groupOrder ) {\n\n\t\treturn a.groupOrder - b.groupOrder;\n\n\t} else if ( a.renderOrder !== b.renderOrder ) {\n\n\t\treturn a.renderOrder - b.renderOrder;\n\n\t} else if ( a.z !== b.z ) {\n\n\t\treturn b.z - a.z;\n\n\t} else {\n\n\t\treturn a.id - b.id;\n\n\t}\n\n}\n\n\nfunction WebGLRenderList() {\n\n\tconst renderItems = [];\n\tlet renderItemsIndex = 0;\n\n\tconst opaque = [];\n\tconst transmissive = [];\n\tconst transparent = [];\n\n\tfunction init() {\n\n\t\trenderItemsIndex = 0;\n\n\t\topaque.length = 0;\n\t\ttransmissive.length = 0;\n\t\ttransparent.length = 0;\n\n\t}\n\n\tfunction getNextRenderItem( object, geometry, material, groupOrder, z, group ) {\n\n\t\tlet renderItem = renderItems[ renderItemsIndex ];\n\n\t\tif ( renderItem === undefined ) {\n\n\t\t\trenderItem = {\n\t\t\t\tid: object.id,\n\t\t\t\tobject: object,\n\t\t\t\tgeometry: geometry,\n\t\t\t\tmaterial: material,\n\t\t\t\tgroupOrder: groupOrder,\n\t\t\t\trenderOrder: object.renderOrder,\n\t\t\t\tz: z,\n\t\t\t\tgroup: group\n\t\t\t};\n\n\t\t\trenderItems[ renderItemsIndex ] = renderItem;\n\n\t\t} else {\n\n\t\t\trenderItem.id = object.id;\n\t\t\trenderItem.object = object;\n\t\t\trenderItem.geometry = geometry;\n\t\t\trenderItem.material = material;\n\t\t\trenderItem.groupOrder = groupOrder;\n\t\t\trenderItem.renderOrder = object.renderOrder;\n\t\t\trenderItem.z = z;\n\t\t\trenderItem.group = group;\n\n\t\t}\n\n\t\trenderItemsIndex ++;\n\n\t\treturn renderItem;\n\n\t}\n\n\tfunction push( object, geometry, material, groupOrder, z, group ) {\n\n\t\tconst renderItem = getNextRenderItem( object, geometry, material, groupOrder, z, group );\n\n\t\tif ( material.transmission > 0.0 ) {\n\n\t\t\ttransmissive.push( renderItem );\n\n\t\t} else if ( material.transparent === true ) {\n\n\t\t\ttransparent.push( renderItem );\n\n\t\t} else {\n\n\t\t\topaque.push( renderItem );\n\n\t\t}\n\n\t}\n\n\tfunction unshift( object, geometry, material, groupOrder, z, group ) {\n\n\t\tconst renderItem = getNextRenderItem( object, geometry, material, groupOrder, z, group );\n\n\t\tif ( material.transmission > 0.0 ) {\n\n\t\t\ttransmissive.unshift( renderItem );\n\n\t\t} else if ( material.transparent === true ) {\n\n\t\t\ttransparent.unshift( renderItem );\n\n\t\t} else {\n\n\t\t\topaque.unshift( renderItem );\n\n\t\t}\n\n\t}\n\n\tfunction sort( customOpaqueSort, customTransparentSort ) {\n\n\t\tif ( opaque.length > 1 ) opaque.sort( customOpaqueSort || painterSortStable );\n\t\tif ( transmissive.length > 1 ) transmissive.sort( customTransparentSort || reversePainterSortStable );\n\t\tif ( transparent.length > 1 ) transparent.sort( customTransparentSort || reversePainterSortStable );\n\n\t}\n\n\tfunction finish() {\n\n\t\t// Clear references from inactive renderItems in the list\n\n\t\tfor ( let i = renderItemsIndex, il = renderItems.length; i < il; i ++ ) {\n\n\t\t\tconst renderItem = renderItems[ i ];\n\n\t\t\tif ( renderItem.id === null ) break;\n\n\t\t\trenderItem.id = null;\n\t\t\trenderItem.object = null;\n\t\t\trenderItem.geometry = null;\n\t\t\trenderItem.material = null;\n\t\t\trenderItem.group = null;\n\n\t\t}\n\n\t}\n\n\treturn {\n\n\t\topaque: opaque,\n\t\ttransmissive: transmissive,\n\t\ttransparent: transparent,\n\n\t\tinit: init,\n\t\tpush: push,\n\t\tunshift: unshift,\n\t\tfinish: finish,\n\n\t\tsort: sort\n\t};\n\n}\n\nfunction WebGLRenderLists() {\n\n\tlet lists = new WeakMap();\n\n\tfunction get( scene, renderCallDepth ) {\n\n\t\tconst listArray = lists.get( scene );\n\t\tlet list;\n\n\t\tif ( listArray === undefined ) {\n\n\t\t\tlist = new WebGLRenderList();\n\t\t\tlists.set( scene, [ list ] );\n\n\t\t} else {\n\n\t\t\tif ( renderCallDepth >= listArray.length ) {\n\n\t\t\t\tlist = new WebGLRenderList();\n\t\t\t\tlistArray.push( list );\n\n\t\t\t} else {\n\n\t\t\t\tlist = listArray[ renderCallDepth ];\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn list;\n\n\t}\n\n\tfunction dispose() {\n\n\t\tlists = new WeakMap();\n\n\t}\n\n\treturn {\n\t\tget: get,\n\t\tdispose: dispose\n\t};\n\n}\n\nfunction UniformsCache() {\n\n\tconst lights = {};\n\n\treturn {\n\n\t\tget: function ( light ) {\n\n\t\t\tif ( lights[ light.id ] !== undefined ) {\n\n\t\t\t\treturn lights[ light.id ];\n\n\t\t\t}\n\n\t\t\tlet uniforms;\n\n\t\t\tswitch ( light.type ) {\n\n\t\t\t\tcase 'DirectionalLight':\n\t\t\t\t\tuniforms = {\n\t\t\t\t\t\tdirection: new Vector3(),\n\t\t\t\t\t\tcolor: new Color()\n\t\t\t\t\t};\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 'SpotLight':\n\t\t\t\t\tuniforms = {\n\t\t\t\t\t\tposition: new Vector3(),\n\t\t\t\t\t\tdirection: new Vector3(),\n\t\t\t\t\t\tcolor: new Color(),\n\t\t\t\t\t\tdistance: 0,\n\t\t\t\t\t\tconeCos: 0,\n\t\t\t\t\t\tpenumbraCos: 0,\n\t\t\t\t\t\tdecay: 0\n\t\t\t\t\t};\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 'PointLight':\n\t\t\t\t\tuniforms = {\n\t\t\t\t\t\tposition: new Vector3(),\n\t\t\t\t\t\tcolor: new Color(),\n\t\t\t\t\t\tdistance: 0,\n\t\t\t\t\t\tdecay: 0\n\t\t\t\t\t};\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 'HemisphereLight':\n\t\t\t\t\tuniforms = {\n\t\t\t\t\t\tdirection: new Vector3(),\n\t\t\t\t\t\tskyColor: new Color(),\n\t\t\t\t\t\tgroundColor: new Color()\n\t\t\t\t\t};\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 'RectAreaLight':\n\t\t\t\t\tuniforms = {\n\t\t\t\t\t\tcolor: new Color(),\n\t\t\t\t\t\tposition: new Vector3(),\n\t\t\t\t\t\thalfWidth: new Vector3(),\n\t\t\t\t\t\thalfHeight: new Vector3()\n\t\t\t\t\t};\n\t\t\t\t\tbreak;\n\n\t\t\t}\n\n\t\t\tlights[ light.id ] = uniforms;\n\n\t\t\treturn uniforms;\n\n\t\t}\n\n\t};\n\n}\n\nfunction ShadowUniformsCache() {\n\n\tconst lights = {};\n\n\treturn {\n\n\t\tget: function ( light ) {\n\n\t\t\tif ( lights[ light.id ] !== undefined ) {\n\n\t\t\t\treturn lights[ light.id ];\n\n\t\t\t}\n\n\t\t\tlet uniforms;\n\n\t\t\tswitch ( light.type ) {\n\n\t\t\t\tcase 'DirectionalLight':\n\t\t\t\t\tuniforms = {\n\t\t\t\t\t\tshadowBias: 0,\n\t\t\t\t\t\tshadowNormalBias: 0,\n\t\t\t\t\t\tshadowRadius: 1,\n\t\t\t\t\t\tshadowMapSize: new Vector2()\n\t\t\t\t\t};\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 'SpotLight':\n\t\t\t\t\tuniforms = {\n\t\t\t\t\t\tshadowBias: 0,\n\t\t\t\t\t\tshadowNormalBias: 0,\n\t\t\t\t\t\tshadowRadius: 1,\n\t\t\t\t\t\tshadowMapSize: new Vector2()\n\t\t\t\t\t};\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 'PointLight':\n\t\t\t\t\tuniforms = {\n\t\t\t\t\t\tshadowBias: 0,\n\t\t\t\t\t\tshadowNormalBias: 0,\n\t\t\t\t\t\tshadowRadius: 1,\n\t\t\t\t\t\tshadowMapSize: new Vector2(),\n\t\t\t\t\t\tshadowCameraNear: 1,\n\t\t\t\t\t\tshadowCameraFar: 1000\n\t\t\t\t\t};\n\t\t\t\t\tbreak;\n\n\t\t\t\t// TODO (abelnation): set RectAreaLight shadow uniforms\n\n\t\t\t}\n\n\t\t\tlights[ light.id ] = uniforms;\n\n\t\t\treturn uniforms;\n\n\t\t}\n\n\t};\n\n}\n\n\n\nlet nextVersion = 0;\n\nfunction shadowCastingAndTexturingLightsFirst( lightA, lightB ) {\n\n\treturn ( lightB.castShadow ? 2 : 0 ) - ( lightA.castShadow ? 2 : 0 ) + ( lightB.map ? 1 : 0 ) - ( lightA.map ? 1 : 0 );\n\n}\n\nfunction WebGLLights( extensions ) {\n\n\tconst cache = new UniformsCache();\n\n\tconst shadowCache = ShadowUniformsCache();\n\n\tconst state = {\n\n\t\tversion: 0,\n\n\t\thash: {\n\t\t\tdirectionalLength: - 1,\n\t\t\tpointLength: - 1,\n\t\t\tspotLength: - 1,\n\t\t\trectAreaLength: - 1,\n\t\t\themiLength: - 1,\n\n\t\t\tnumDirectionalShadows: - 1,\n\t\t\tnumPointShadows: - 1,\n\t\t\tnumSpotShadows: - 1,\n\t\t\tnumSpotMaps: - 1,\n\n\t\t\tnumLightProbes: - 1\n\t\t},\n\n\t\tambient: [ 0, 0, 0 ],\n\t\tprobe: [],\n\t\tdirectional: [],\n\t\tdirectionalShadow: [],\n\t\tdirectionalShadowMap: [],\n\t\tdirectionalShadowMatrix: [],\n\t\tspot: [],\n\t\tspotLightMap: [],\n\t\tspotShadow: [],\n\t\tspotShadowMap: [],\n\t\tspotLightMatrix: [],\n\t\trectArea: [],\n\t\trectAreaLTC1: null,\n\t\trectAreaLTC2: null,\n\t\tpoint: [],\n\t\tpointShadow: [],\n\t\tpointShadowMap: [],\n\t\tpointShadowMatrix: [],\n\t\themi: [],\n\t\tnumSpotLightShadowsWithMaps: 0,\n\t\tnumLightProbes: 0\n\n\t};\n\n\tfor ( let i = 0; i < 9; i ++ ) state.probe.push( new Vector3() );\n\n\tconst vector3 = new Vector3();\n\tconst matrix4 = new Matrix4();\n\tconst matrix42 = new Matrix4();\n\n\tfunction setup( lights ) {\n\n\t\tlet r = 0, g = 0, b = 0;\n\n\t\tfor ( let i = 0; i < 9; i ++ ) state.probe[ i ].set( 0, 0, 0 );\n\n\t\tlet directionalLength = 0;\n\t\tlet pointLength = 0;\n\t\tlet spotLength = 0;\n\t\tlet rectAreaLength = 0;\n\t\tlet hemiLength = 0;\n\n\t\tlet numDirectionalShadows = 0;\n\t\tlet numPointShadows = 0;\n\t\tlet numSpotShadows = 0;\n\t\tlet numSpotMaps = 0;\n\t\tlet numSpotShadowsWithMaps = 0;\n\n\t\tlet numLightProbes = 0;\n\n\t\t// ordering : [shadow casting + map texturing, map texturing, shadow casting, none ]\n\t\tlights.sort( shadowCastingAndTexturingLightsFirst );\n\n\t\tfor ( let i = 0, l = lights.length; i < l; i ++ ) {\n\n\t\t\tconst light = lights[ i ];\n\n\t\t\tconst color = light.color;\n\t\t\tconst intensity = light.intensity;\n\t\t\tconst distance = light.distance;\n\n\t\t\tconst shadowMap = ( light.shadow && light.shadow.map ) ? light.shadow.map.texture : null;\n\n\t\t\tif ( light.isAmbientLight ) {\n\n\t\t\t\tr += color.r * intensity;\n\t\t\t\tg += color.g * intensity;\n\t\t\t\tb += color.b * intensity;\n\n\t\t\t} else if ( light.isLightProbe ) {\n\n\t\t\t\tfor ( let j = 0; j < 9; j ++ ) {\n\n\t\t\t\t\tstate.probe[ j ].addScaledVector( light.sh.coefficients[ j ], intensity );\n\n\t\t\t\t}\n\n\t\t\t\tnumLightProbes ++;\n\n\t\t\t} else if ( light.isDirectionalLight ) {\n\n\t\t\t\tconst uniforms = cache.get( light );\n\n\t\t\t\tuniforms.color.copy( light.color ).multiplyScalar( light.intensity );\n\n\t\t\t\tif ( light.castShadow ) {\n\n\t\t\t\t\tconst shadow = light.shadow;\n\n\t\t\t\t\tconst shadowUniforms = shadowCache.get( light );\n\n\t\t\t\t\tshadowUniforms.shadowBias = shadow.bias;\n\t\t\t\t\tshadowUniforms.shadowNormalBias = shadow.normalBias;\n\t\t\t\t\tshadowUniforms.shadowRadius = shadow.radius;\n\t\t\t\t\tshadowUniforms.shadowMapSize = shadow.mapSize;\n\n\t\t\t\t\tstate.directionalShadow[ directionalLength ] = shadowUniforms;\n\t\t\t\t\tstate.directionalShadowMap[ directionalLength ] = shadowMap;\n\t\t\t\t\tstate.directionalShadowMatrix[ directionalLength ] = light.shadow.matrix;\n\n\t\t\t\t\tnumDirectionalShadows ++;\n\n\t\t\t\t}\n\n\t\t\t\tstate.directional[ directionalLength ] = uniforms;\n\n\t\t\t\tdirectionalLength ++;\n\n\t\t\t} else if ( light.isSpotLight ) {\n\n\t\t\t\tconst uniforms = cache.get( light );\n\n\t\t\t\tuniforms.position.setFromMatrixPosition( light.matrixWorld );\n\n\t\t\t\tuniforms.color.copy( color ).multiplyScalar( intensity );\n\t\t\t\tuniforms.distance = distance;\n\n\t\t\t\tuniforms.coneCos = Math.cos( light.angle );\n\t\t\t\tuniforms.penumbraCos = Math.cos( light.angle * ( 1 - light.penumbra ) );\n\t\t\t\tuniforms.decay = light.decay;\n\n\t\t\t\tstate.spot[ spotLength ] = uniforms;\n\n\t\t\t\tconst shadow = light.shadow;\n\n\t\t\t\tif ( light.map ) {\n\n\t\t\t\t\tstate.spotLightMap[ numSpotMaps ] = light.map;\n\t\t\t\t\tnumSpotMaps ++;\n\n\t\t\t\t\t// make sure the lightMatrix is up to date\n\t\t\t\t\t// TODO : do it if required only\n\t\t\t\t\tshadow.updateMatrices( light );\n\n\t\t\t\t\tif ( light.castShadow ) numSpotShadowsWithMaps ++;\n\n\t\t\t\t}\n\n\t\t\t\tstate.spotLightMatrix[ spotLength ] = shadow.matrix;\n\n\t\t\t\tif ( light.castShadow ) {\n\n\t\t\t\t\tconst shadowUniforms = shadowCache.get( light );\n\n\t\t\t\t\tshadowUniforms.shadowBias = shadow.bias;\n\t\t\t\t\tshadowUniforms.shadowNormalBias = shadow.normalBias;\n\t\t\t\t\tshadowUniforms.shadowRadius = shadow.radius;\n\t\t\t\t\tshadowUniforms.shadowMapSize = shadow.mapSize;\n\n\t\t\t\t\tstate.spotShadow[ spotLength ] = shadowUniforms;\n\t\t\t\t\tstate.spotShadowMap[ spotLength ] = shadowMap;\n\n\t\t\t\t\tnumSpotShadows ++;\n\n\t\t\t\t}\n\n\t\t\t\tspotLength ++;\n\n\t\t\t} else if ( light.isRectAreaLight ) {\n\n\t\t\t\tconst uniforms = cache.get( light );\n\n\t\t\t\tuniforms.color.copy( color ).multiplyScalar( intensity );\n\n\t\t\t\tuniforms.halfWidth.set( light.width * 0.5, 0.0, 0.0 );\n\t\t\t\tuniforms.halfHeight.set( 0.0, light.height * 0.5, 0.0 );\n\n\t\t\t\tstate.rectArea[ rectAreaLength ] = uniforms;\n\n\t\t\t\trectAreaLength ++;\n\n\t\t\t} else if ( light.isPointLight ) {\n\n\t\t\t\tconst uniforms = cache.get( light );\n\n\t\t\t\tuniforms.color.copy( light.color ).multiplyScalar( light.intensity );\n\t\t\t\tuniforms.distance = light.distance;\n\t\t\t\tuniforms.decay = light.decay;\n\n\t\t\t\tif ( light.castShadow ) {\n\n\t\t\t\t\tconst shadow = light.shadow;\n\n\t\t\t\t\tconst shadowUniforms = shadowCache.get( light );\n\n\t\t\t\t\tshadowUniforms.shadowBias = shadow.bias;\n\t\t\t\t\tshadowUniforms.shadowNormalBias = shadow.normalBias;\n\t\t\t\t\tshadowUniforms.shadowRadius = shadow.radius;\n\t\t\t\t\tshadowUniforms.shadowMapSize = shadow.mapSize;\n\t\t\t\t\tshadowUniforms.shadowCameraNear = shadow.camera.near;\n\t\t\t\t\tshadowUniforms.shadowCameraFar = shadow.camera.far;\n\n\t\t\t\t\tstate.pointShadow[ pointLength ] = shadowUniforms;\n\t\t\t\t\tstate.pointShadowMap[ pointLength ] = shadowMap;\n\t\t\t\t\tstate.pointShadowMatrix[ pointLength ] = light.shadow.matrix;\n\n\t\t\t\t\tnumPointShadows ++;\n\n\t\t\t\t}\n\n\t\t\t\tstate.point[ pointLength ] = uniforms;\n\n\t\t\t\tpointLength ++;\n\n\t\t\t} else if ( light.isHemisphereLight ) {\n\n\t\t\t\tconst uniforms = cache.get( light );\n\n\t\t\t\tuniforms.skyColor.copy( light.color ).multiplyScalar( intensity );\n\t\t\t\tuniforms.groundColor.copy( light.groundColor ).multiplyScalar( intensity );\n\n\t\t\t\tstate.hemi[ hemiLength ] = uniforms;\n\n\t\t\t\themiLength ++;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( rectAreaLength > 0 ) {\n\n\t\t\tif ( extensions.has( 'OES_texture_float_linear' ) === true ) {\n\n\t\t\t\tstate.rectAreaLTC1 = UniformsLib.LTC_FLOAT_1;\n\t\t\t\tstate.rectAreaLTC2 = UniformsLib.LTC_FLOAT_2;\n\n\t\t\t} else {\n\n\t\t\t\tstate.rectAreaLTC1 = UniformsLib.LTC_HALF_1;\n\t\t\t\tstate.rectAreaLTC2 = UniformsLib.LTC_HALF_2;\n\n\t\t\t}\n\n\t\t}\n\n\t\tstate.ambient[ 0 ] = r;\n\t\tstate.ambient[ 1 ] = g;\n\t\tstate.ambient[ 2 ] = b;\n\n\t\tconst hash = state.hash;\n\n\t\tif ( hash.directionalLength !== directionalLength ||\n\t\t\thash.pointLength !== pointLength ||\n\t\t\thash.spotLength !== spotLength ||\n\t\t\thash.rectAreaLength !== rectAreaLength ||\n\t\t\thash.hemiLength !== hemiLength ||\n\t\t\thash.numDirectionalShadows !== numDirectionalShadows ||\n\t\t\thash.numPointShadows !== numPointShadows ||\n\t\t\thash.numSpotShadows !== numSpotShadows ||\n\t\t\thash.numSpotMaps !== numSpotMaps ||\n\t\t\thash.numLightProbes !== numLightProbes ) {\n\n\t\t\tstate.directional.length = directionalLength;\n\t\t\tstate.spot.length = spotLength;\n\t\t\tstate.rectArea.length = rectAreaLength;\n\t\t\tstate.point.length = pointLength;\n\t\t\tstate.hemi.length = hemiLength;\n\n\t\t\tstate.directionalShadow.length = numDirectionalShadows;\n\t\t\tstate.directionalShadowMap.length = numDirectionalShadows;\n\t\t\tstate.pointShadow.length = numPointShadows;\n\t\t\tstate.pointShadowMap.length = numPointShadows;\n\t\t\tstate.spotShadow.length = numSpotShadows;\n\t\t\tstate.spotShadowMap.length = numSpotShadows;\n\t\t\tstate.directionalShadowMatrix.length = numDirectionalShadows;\n\t\t\tstate.pointShadowMatrix.length = numPointShadows;\n\t\t\tstate.spotLightMatrix.length = numSpotShadows + numSpotMaps - numSpotShadowsWithMaps;\n\t\t\tstate.spotLightMap.length = numSpotMaps;\n\t\t\tstate.numSpotLightShadowsWithMaps = numSpotShadowsWithMaps;\n\t\t\tstate.numLightProbes = numLightProbes;\n\n\t\t\thash.directionalLength = directionalLength;\n\t\t\thash.pointLength = pointLength;\n\t\t\thash.spotLength = spotLength;\n\t\t\thash.rectAreaLength = rectAreaLength;\n\t\t\thash.hemiLength = hemiLength;\n\n\t\t\thash.numDirectionalShadows = numDirectionalShadows;\n\t\t\thash.numPointShadows = numPointShadows;\n\t\t\thash.numSpotShadows = numSpotShadows;\n\t\t\thash.numSpotMaps = numSpotMaps;\n\n\t\t\thash.numLightProbes = numLightProbes;\n\n\t\t\tstate.version = nextVersion ++;\n\n\t\t}\n\n\t}\n\n\tfunction setupView( lights, camera ) {\n\n\t\tlet directionalLength = 0;\n\t\tlet pointLength = 0;\n\t\tlet spotLength = 0;\n\t\tlet rectAreaLength = 0;\n\t\tlet hemiLength = 0;\n\n\t\tconst viewMatrix = camera.matrixWorldInverse;\n\n\t\tfor ( let i = 0, l = lights.length; i < l; i ++ ) {\n\n\t\t\tconst light = lights[ i ];\n\n\t\t\tif ( light.isDirectionalLight ) {\n\n\t\t\t\tconst uniforms = state.directional[ directionalLength ];\n\n\t\t\t\tuniforms.direction.setFromMatrixPosition( light.matrixWorld );\n\t\t\t\tvector3.setFromMatrixPosition( light.target.matrixWorld );\n\t\t\t\tuniforms.direction.sub( vector3 );\n\t\t\t\tuniforms.direction.transformDirection( viewMatrix );\n\n\t\t\t\tdirectionalLength ++;\n\n\t\t\t} else if ( light.isSpotLight ) {\n\n\t\t\t\tconst uniforms = state.spot[ spotLength ];\n\n\t\t\t\tuniforms.position.setFromMatrixPosition( light.matrixWorld );\n\t\t\t\tuniforms.position.applyMatrix4( viewMatrix );\n\n\t\t\t\tuniforms.direction.setFromMatrixPosition( light.matrixWorld );\n\t\t\t\tvector3.setFromMatrixPosition( light.target.matrixWorld );\n\t\t\t\tuniforms.direction.sub( vector3 );\n\t\t\t\tuniforms.direction.transformDirection( viewMatrix );\n\n\t\t\t\tspotLength ++;\n\n\t\t\t} else if ( light.isRectAreaLight ) {\n\n\t\t\t\tconst uniforms = state.rectArea[ rectAreaLength ];\n\n\t\t\t\tuniforms.position.setFromMatrixPosition( light.matrixWorld );\n\t\t\t\tuniforms.position.applyMatrix4( viewMatrix );\n\n\t\t\t\t// extract local rotation of light to derive width/height half vectors\n\t\t\t\tmatrix42.identity();\n\t\t\t\tmatrix4.copy( light.matrixWorld );\n\t\t\t\tmatrix4.premultiply( viewMatrix );\n\t\t\t\tmatrix42.extractRotation( matrix4 );\n\n\t\t\t\tuniforms.halfWidth.set( light.width * 0.5, 0.0, 0.0 );\n\t\t\t\tuniforms.halfHeight.set( 0.0, light.height * 0.5, 0.0 );\n\n\t\t\t\tuniforms.halfWidth.applyMatrix4( matrix42 );\n\t\t\t\tuniforms.halfHeight.applyMatrix4( matrix42 );\n\n\t\t\t\trectAreaLength ++;\n\n\t\t\t} else if ( light.isPointLight ) {\n\n\t\t\t\tconst uniforms = state.point[ pointLength ];\n\n\t\t\t\tuniforms.position.setFromMatrixPosition( light.matrixWorld );\n\t\t\t\tuniforms.position.applyMatrix4( viewMatrix );\n\n\t\t\t\tpointLength ++;\n\n\t\t\t} else if ( light.isHemisphereLight ) {\n\n\t\t\t\tconst uniforms = state.hemi[ hemiLength ];\n\n\t\t\t\tuniforms.direction.setFromMatrixPosition( light.matrixWorld );\n\t\t\t\tuniforms.direction.transformDirection( viewMatrix );\n\n\t\t\t\themiLength ++;\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\treturn {\n\t\tsetup: setup,\n\t\tsetupView: setupView,\n\t\tstate: state\n\t};\n\n}\n\nfunction WebGLRenderState( extensions ) {\n\n\tconst lights = new WebGLLights( extensions );\n\n\tconst lightsArray = [];\n\tconst shadowsArray = [];\n\n\tfunction init( camera ) {\n\n\t\tstate.camera = camera;\n\n\t\tlightsArray.length = 0;\n\t\tshadowsArray.length = 0;\n\n\t}\n\n\tfunction pushLight( light ) {\n\n\t\tlightsArray.push( light );\n\n\t}\n\n\tfunction pushShadow( shadowLight ) {\n\n\t\tshadowsArray.push( shadowLight );\n\n\t}\n\n\tfunction setupLights() {\n\n\t\tlights.setup( lightsArray );\n\n\t}\n\n\tfunction setupLightsView( camera ) {\n\n\t\tlights.setupView( lightsArray, camera );\n\n\t}\n\n\tconst state = {\n\t\tlightsArray: lightsArray,\n\t\tshadowsArray: shadowsArray,\n\n\t\tcamera: null,\n\n\t\tlights: lights,\n\n\t\ttransmissionRenderTarget: {}\n\t};\n\n\treturn {\n\t\tinit: init,\n\t\tstate: state,\n\t\tsetupLights: setupLights,\n\t\tsetupLightsView: setupLightsView,\n\n\t\tpushLight: pushLight,\n\t\tpushShadow: pushShadow\n\t};\n\n}\n\nfunction WebGLRenderStates( extensions ) {\n\n\tlet renderStates = new WeakMap();\n\n\tfunction get( scene, renderCallDepth = 0 ) {\n\n\t\tconst renderStateArray = renderStates.get( scene );\n\t\tlet renderState;\n\n\t\tif ( renderStateArray === undefined ) {\n\n\t\t\trenderState = new WebGLRenderState( extensions );\n\t\t\trenderStates.set( scene, [ renderState ] );\n\n\t\t} else {\n\n\t\t\tif ( renderCallDepth >= renderStateArray.length ) {\n\n\t\t\t\trenderState = new WebGLRenderState( extensions );\n\t\t\t\trenderStateArray.push( renderState );\n\n\t\t\t} else {\n\n\t\t\t\trenderState = renderStateArray[ renderCallDepth ];\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn renderState;\n\n\t}\n\n\tfunction dispose() {\n\n\t\trenderStates = new WeakMap();\n\n\t}\n\n\treturn {\n\t\tget: get,\n\t\tdispose: dispose\n\t};\n\n}\n\nclass MeshDepthMaterial extends Material {\n\n\tconstructor( parameters ) {\n\n\t\tsuper();\n\n\t\tthis.isMeshDepthMaterial = true;\n\n\t\tthis.type = 'MeshDepthMaterial';\n\n\t\tthis.depthPacking = BasicDepthPacking;\n\n\t\tthis.map = null;\n\n\t\tthis.alphaMap = null;\n\n\t\tthis.displacementMap = null;\n\t\tthis.displacementScale = 1;\n\t\tthis.displacementBias = 0;\n\n\t\tthis.wireframe = false;\n\t\tthis.wireframeLinewidth = 1;\n\n\t\tthis.setValues( parameters );\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.depthPacking = source.depthPacking;\n\n\t\tthis.map = source.map;\n\n\t\tthis.alphaMap = source.alphaMap;\n\n\t\tthis.displacementMap = source.displacementMap;\n\t\tthis.displacementScale = source.displacementScale;\n\t\tthis.displacementBias = source.displacementBias;\n\n\t\tthis.wireframe = source.wireframe;\n\t\tthis.wireframeLinewidth = source.wireframeLinewidth;\n\n\t\treturn this;\n\n\t}\n\n}\n\nclass MeshDistanceMaterial extends Material {\n\n\tconstructor( parameters ) {\n\n\t\tsuper();\n\n\t\tthis.isMeshDistanceMaterial = true;\n\n\t\tthis.type = 'MeshDistanceMaterial';\n\n\t\tthis.map = null;\n\n\t\tthis.alphaMap = null;\n\n\t\tthis.displacementMap = null;\n\t\tthis.displacementScale = 1;\n\t\tthis.displacementBias = 0;\n\n\t\tthis.setValues( parameters );\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.map = source.map;\n\n\t\tthis.alphaMap = source.alphaMap;\n\n\t\tthis.displacementMap = source.displacementMap;\n\t\tthis.displacementScale = source.displacementScale;\n\t\tthis.displacementBias = source.displacementBias;\n\n\t\treturn this;\n\n\t}\n\n}\n\nconst vertex = \"void main() {\\n\\tgl_Position = vec4( position, 1.0 );\\n}\";\n\nconst fragment = \"uniform sampler2D shadow_pass;\\nuniform vec2 resolution;\\nuniform float radius;\\n#include \\nvoid main() {\\n\\tconst float samples = float( VSM_SAMPLES );\\n\\tfloat mean = 0.0;\\n\\tfloat squared_mean = 0.0;\\n\\tfloat uvStride = samples <= 1.0 ? 0.0 : 2.0 / ( samples - 1.0 );\\n\\tfloat uvStart = samples <= 1.0 ? 0.0 : - 1.0;\\n\\tfor ( float i = 0.0; i < samples; i ++ ) {\\n\\t\\tfloat uvOffset = uvStart + i * uvStride;\\n\\t\\t#ifdef HORIZONTAL_PASS\\n\\t\\t\\tvec2 distribution = unpackRGBATo2Half( texture2D( shadow_pass, ( gl_FragCoord.xy + vec2( uvOffset, 0.0 ) * radius ) / resolution ) );\\n\\t\\t\\tmean += distribution.x;\\n\\t\\t\\tsquared_mean += distribution.y * distribution.y + distribution.x * distribution.x;\\n\\t\\t#else\\n\\t\\t\\tfloat depth = unpackRGBAToDepth( texture2D( shadow_pass, ( gl_FragCoord.xy + vec2( 0.0, uvOffset ) * radius ) / resolution ) );\\n\\t\\t\\tmean += depth;\\n\\t\\t\\tsquared_mean += depth * depth;\\n\\t\\t#endif\\n\\t}\\n\\tmean = mean / samples;\\n\\tsquared_mean = squared_mean / samples;\\n\\tfloat std_dev = sqrt( squared_mean - mean * mean );\\n\\tgl_FragColor = pack2HalfToRGBA( vec2( mean, std_dev ) );\\n}\";\n\nfunction WebGLShadowMap( renderer, objects, capabilities ) {\n\n\tlet _frustum = new Frustum();\n\n\tconst _shadowMapSize = new Vector2(),\n\t\t_viewportSize = new Vector2(),\n\n\t\t_viewport = new Vector4(),\n\n\t\t_depthMaterial = new MeshDepthMaterial( { depthPacking: RGBADepthPacking } ),\n\t\t_distanceMaterial = new MeshDistanceMaterial(),\n\n\t\t_materialCache = {},\n\n\t\t_maxTextureSize = capabilities.maxTextureSize;\n\n\tconst shadowSide = { [ FrontSide ]: BackSide, [ BackSide ]: FrontSide, [ DoubleSide ]: DoubleSide };\n\n\tconst shadowMaterialVertical = new ShaderMaterial( {\n\t\tdefines: {\n\t\t\tVSM_SAMPLES: 8\n\t\t},\n\t\tuniforms: {\n\t\t\tshadow_pass: { value: null },\n\t\t\tresolution: { value: new Vector2() },\n\t\t\tradius: { value: 4.0 }\n\t\t},\n\n\t\tvertexShader: vertex,\n\t\tfragmentShader: fragment\n\n\t} );\n\n\tconst shadowMaterialHorizontal = shadowMaterialVertical.clone();\n\tshadowMaterialHorizontal.defines.HORIZONTAL_PASS = 1;\n\n\tconst fullScreenTri = new BufferGeometry();\n\tfullScreenTri.setAttribute(\n\t\t'position',\n\t\tnew BufferAttribute(\n\t\t\tnew Float32Array( [ - 1, - 1, 0.5, 3, - 1, 0.5, - 1, 3, 0.5 ] ),\n\t\t\t3\n\t\t)\n\t);\n\n\tconst fullScreenMesh = new Mesh( fullScreenTri, shadowMaterialVertical );\n\n\tconst scope = this;\n\n\tthis.enabled = false;\n\n\tthis.autoUpdate = true;\n\tthis.needsUpdate = false;\n\n\tthis.type = PCFShadowMap;\n\tlet _previousType = this.type;\n\n\tthis.render = function ( lights, scene, camera ) {\n\n\t\tif ( scope.enabled === false ) return;\n\t\tif ( scope.autoUpdate === false && scope.needsUpdate === false ) return;\n\n\t\tif ( lights.length === 0 ) return;\n\n\t\tconst currentRenderTarget = renderer.getRenderTarget();\n\t\tconst activeCubeFace = renderer.getActiveCubeFace();\n\t\tconst activeMipmapLevel = renderer.getActiveMipmapLevel();\n\n\t\tconst _state = renderer.state;\n\n\t\t// Set GL state for depth map.\n\t\t_state.setBlending( NoBlending );\n\t\t_state.buffers.color.setClear( 1, 1, 1, 1 );\n\t\t_state.buffers.depth.setTest( true );\n\t\t_state.setScissorTest( false );\n\n\t\t// check for shadow map type changes\n\n\t\tconst toVSM = ( _previousType !== VSMShadowMap && this.type === VSMShadowMap );\n\t\tconst fromVSM = ( _previousType === VSMShadowMap && this.type !== VSMShadowMap );\n\n\t\t// render depth map\n\n\t\tfor ( let i = 0, il = lights.length; i < il; i ++ ) {\n\n\t\t\tconst light = lights[ i ];\n\t\t\tconst shadow = light.shadow;\n\n\t\t\tif ( shadow === undefined ) {\n\n\t\t\t\tconsole.warn( 'THREE.WebGLShadowMap:', light, 'has no shadow.' );\n\t\t\t\tcontinue;\n\n\t\t\t}\n\n\t\t\tif ( shadow.autoUpdate === false && shadow.needsUpdate === false ) continue;\n\n\t\t\t_shadowMapSize.copy( shadow.mapSize );\n\n\t\t\tconst shadowFrameExtents = shadow.getFrameExtents();\n\n\t\t\t_shadowMapSize.multiply( shadowFrameExtents );\n\n\t\t\t_viewportSize.copy( shadow.mapSize );\n\n\t\t\tif ( _shadowMapSize.x > _maxTextureSize || _shadowMapSize.y > _maxTextureSize ) {\n\n\t\t\t\tif ( _shadowMapSize.x > _maxTextureSize ) {\n\n\t\t\t\t\t_viewportSize.x = Math.floor( _maxTextureSize / shadowFrameExtents.x );\n\t\t\t\t\t_shadowMapSize.x = _viewportSize.x * shadowFrameExtents.x;\n\t\t\t\t\tshadow.mapSize.x = _viewportSize.x;\n\n\t\t\t\t}\n\n\t\t\t\tif ( _shadowMapSize.y > _maxTextureSize ) {\n\n\t\t\t\t\t_viewportSize.y = Math.floor( _maxTextureSize / shadowFrameExtents.y );\n\t\t\t\t\t_shadowMapSize.y = _viewportSize.y * shadowFrameExtents.y;\n\t\t\t\t\tshadow.mapSize.y = _viewportSize.y;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tif ( shadow.map === null || toVSM === true || fromVSM === true ) {\n\n\t\t\t\tconst pars = ( this.type !== VSMShadowMap ) ? { minFilter: NearestFilter, magFilter: NearestFilter } : {};\n\n\t\t\t\tif ( shadow.map !== null ) {\n\n\t\t\t\t\tshadow.map.dispose();\n\n\t\t\t\t}\n\n\t\t\t\tshadow.map = new WebGLRenderTarget( _shadowMapSize.x, _shadowMapSize.y, pars );\n\t\t\t\tshadow.map.texture.name = light.name + '.shadowMap';\n\n\t\t\t\tshadow.camera.updateProjectionMatrix();\n\n\t\t\t}\n\n\t\t\trenderer.setRenderTarget( shadow.map );\n\t\t\trenderer.clear();\n\n\t\t\tconst viewportCount = shadow.getViewportCount();\n\n\t\t\tfor ( let vp = 0; vp < viewportCount; vp ++ ) {\n\n\t\t\t\tconst viewport = shadow.getViewport( vp );\n\n\t\t\t\t_viewport.set(\n\t\t\t\t\t_viewportSize.x * viewport.x,\n\t\t\t\t\t_viewportSize.y * viewport.y,\n\t\t\t\t\t_viewportSize.x * viewport.z,\n\t\t\t\t\t_viewportSize.y * viewport.w\n\t\t\t\t);\n\n\t\t\t\t_state.viewport( _viewport );\n\n\t\t\t\tshadow.updateMatrices( light, vp );\n\n\t\t\t\t_frustum = shadow.getFrustum();\n\n\t\t\t\trenderObject( scene, camera, shadow.camera, light, this.type );\n\n\t\t\t}\n\n\t\t\t// do blur pass for VSM\n\n\t\t\tif ( shadow.isPointLightShadow !== true && this.type === VSMShadowMap ) {\n\n\t\t\t\tVSMPass( shadow, camera );\n\n\t\t\t}\n\n\t\t\tshadow.needsUpdate = false;\n\n\t\t}\n\n\t\t_previousType = this.type;\n\n\t\tscope.needsUpdate = false;\n\n\t\trenderer.setRenderTarget( currentRenderTarget, activeCubeFace, activeMipmapLevel );\n\n\t};\n\n\tfunction VSMPass( shadow, camera ) {\n\n\t\tconst geometry = objects.update( fullScreenMesh );\n\n\t\tif ( shadowMaterialVertical.defines.VSM_SAMPLES !== shadow.blurSamples ) {\n\n\t\t\tshadowMaterialVertical.defines.VSM_SAMPLES = shadow.blurSamples;\n\t\t\tshadowMaterialHorizontal.defines.VSM_SAMPLES = shadow.blurSamples;\n\n\t\t\tshadowMaterialVertical.needsUpdate = true;\n\t\t\tshadowMaterialHorizontal.needsUpdate = true;\n\n\t\t}\n\n\t\tif ( shadow.mapPass === null ) {\n\n\t\t\tshadow.mapPass = new WebGLRenderTarget( _shadowMapSize.x, _shadowMapSize.y );\n\n\t\t}\n\n\t\t// vertical pass\n\n\t\tshadowMaterialVertical.uniforms.shadow_pass.value = shadow.map.texture;\n\t\tshadowMaterialVertical.uniforms.resolution.value = shadow.mapSize;\n\t\tshadowMaterialVertical.uniforms.radius.value = shadow.radius;\n\t\trenderer.setRenderTarget( shadow.mapPass );\n\t\trenderer.clear();\n\t\trenderer.renderBufferDirect( camera, null, geometry, shadowMaterialVertical, fullScreenMesh, null );\n\n\t\t// horizontal pass\n\n\t\tshadowMaterialHorizontal.uniforms.shadow_pass.value = shadow.mapPass.texture;\n\t\tshadowMaterialHorizontal.uniforms.resolution.value = shadow.mapSize;\n\t\tshadowMaterialHorizontal.uniforms.radius.value = shadow.radius;\n\t\trenderer.setRenderTarget( shadow.map );\n\t\trenderer.clear();\n\t\trenderer.renderBufferDirect( camera, null, geometry, shadowMaterialHorizontal, fullScreenMesh, null );\n\n\t}\n\n\tfunction getDepthMaterial( object, material, light, type ) {\n\n\t\tlet result = null;\n\n\t\tconst customMaterial = ( light.isPointLight === true ) ? object.customDistanceMaterial : object.customDepthMaterial;\n\n\t\tif ( customMaterial !== undefined ) {\n\n\t\t\tresult = customMaterial;\n\n\t\t} else {\n\n\t\t\tresult = ( light.isPointLight === true ) ? _distanceMaterial : _depthMaterial;\n\n\t\t\tif ( ( renderer.localClippingEnabled && material.clipShadows === true && Array.isArray( material.clippingPlanes ) && material.clippingPlanes.length !== 0 ) ||\n\t\t\t\t( material.displacementMap && material.displacementScale !== 0 ) ||\n\t\t\t\t( material.alphaMap && material.alphaTest > 0 ) ||\n\t\t\t\t( material.map && material.alphaTest > 0 ) ) {\n\n\t\t\t\t// in this case we need a unique material instance reflecting the\n\t\t\t\t// appropriate state\n\n\t\t\t\tconst keyA = result.uuid, keyB = material.uuid;\n\n\t\t\t\tlet materialsForVariant = _materialCache[ keyA ];\n\n\t\t\t\tif ( materialsForVariant === undefined ) {\n\n\t\t\t\t\tmaterialsForVariant = {};\n\t\t\t\t\t_materialCache[ keyA ] = materialsForVariant;\n\n\t\t\t\t}\n\n\t\t\t\tlet cachedMaterial = materialsForVariant[ keyB ];\n\n\t\t\t\tif ( cachedMaterial === undefined ) {\n\n\t\t\t\t\tcachedMaterial = result.clone();\n\t\t\t\t\tmaterialsForVariant[ keyB ] = cachedMaterial;\n\t\t\t\t\tmaterial.addEventListener( 'dispose', onMaterialDispose );\n\n\t\t\t\t}\n\n\t\t\t\tresult = cachedMaterial;\n\n\t\t\t}\n\n\t\t}\n\n\t\tresult.visible = material.visible;\n\t\tresult.wireframe = material.wireframe;\n\n\t\tif ( type === VSMShadowMap ) {\n\n\t\t\tresult.side = ( material.shadowSide !== null ) ? material.shadowSide : material.side;\n\n\t\t} else {\n\n\t\t\tresult.side = ( material.shadowSide !== null ) ? material.shadowSide : shadowSide[ material.side ];\n\n\t\t}\n\n\t\tresult.alphaMap = material.alphaMap;\n\t\tresult.alphaTest = material.alphaTest;\n\t\tresult.map = material.map;\n\n\t\tresult.clipShadows = material.clipShadows;\n\t\tresult.clippingPlanes = material.clippingPlanes;\n\t\tresult.clipIntersection = material.clipIntersection;\n\n\t\tresult.displacementMap = material.displacementMap;\n\t\tresult.displacementScale = material.displacementScale;\n\t\tresult.displacementBias = material.displacementBias;\n\n\t\tresult.wireframeLinewidth = material.wireframeLinewidth;\n\t\tresult.linewidth = material.linewidth;\n\n\t\tif ( light.isPointLight === true && result.isMeshDistanceMaterial === true ) {\n\n\t\t\tconst materialProperties = renderer.properties.get( result );\n\t\t\tmaterialProperties.light = light;\n\n\t\t}\n\n\t\treturn result;\n\n\t}\n\n\tfunction renderObject( object, camera, shadowCamera, light, type ) {\n\n\t\tif ( object.visible === false ) return;\n\n\t\tconst visible = object.layers.test( camera.layers );\n\n\t\tif ( visible && ( object.isMesh || object.isLine || object.isPoints ) ) {\n\n\t\t\tif ( ( object.castShadow || ( object.receiveShadow && type === VSMShadowMap ) ) && ( ! object.frustumCulled || _frustum.intersectsObject( object ) ) ) {\n\n\t\t\t\tobject.modelViewMatrix.multiplyMatrices( shadowCamera.matrixWorldInverse, object.matrixWorld );\n\n\t\t\t\tconst geometry = objects.update( object );\n\t\t\t\tconst material = object.material;\n\n\t\t\t\tif ( Array.isArray( material ) ) {\n\n\t\t\t\t\tconst groups = geometry.groups;\n\n\t\t\t\t\tfor ( let k = 0, kl = groups.length; k < kl; k ++ ) {\n\n\t\t\t\t\t\tconst group = groups[ k ];\n\t\t\t\t\t\tconst groupMaterial = material[ group.materialIndex ];\n\n\t\t\t\t\t\tif ( groupMaterial && groupMaterial.visible ) {\n\n\t\t\t\t\t\t\tconst depthMaterial = getDepthMaterial( object, groupMaterial, light, type );\n\n\t\t\t\t\t\t\tobject.onBeforeShadow( renderer, object, camera, shadowCamera, geometry, depthMaterial, group );\n\n\t\t\t\t\t\t\trenderer.renderBufferDirect( shadowCamera, null, geometry, depthMaterial, object, group );\n\n\t\t\t\t\t\t\tobject.onAfterShadow( renderer, object, camera, shadowCamera, geometry, depthMaterial, group );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t} else if ( material.visible ) {\n\n\t\t\t\t\tconst depthMaterial = getDepthMaterial( object, material, light, type );\n\n\t\t\t\t\tobject.onBeforeShadow( renderer, object, camera, shadowCamera, geometry, depthMaterial, null );\n\n\t\t\t\t\trenderer.renderBufferDirect( shadowCamera, null, geometry, depthMaterial, object, null );\n\n\t\t\t\t\tobject.onAfterShadow( renderer, object, camera, shadowCamera, geometry, depthMaterial, null );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst children = object.children;\n\n\t\tfor ( let i = 0, l = children.length; i < l; i ++ ) {\n\n\t\t\trenderObject( children[ i ], camera, shadowCamera, light, type );\n\n\t\t}\n\n\t}\n\n\tfunction onMaterialDispose( event ) {\n\n\t\tconst material = event.target;\n\n\t\tmaterial.removeEventListener( 'dispose', onMaterialDispose );\n\n\t\t// make sure to remove the unique distance/depth materials used for shadow map rendering\n\n\t\tfor ( const id in _materialCache ) {\n\n\t\t\tconst cache = _materialCache[ id ];\n\n\t\t\tconst uuid = event.target.uuid;\n\n\t\t\tif ( uuid in cache ) {\n\n\t\t\t\tconst shadowMaterial = cache[ uuid ];\n\t\t\t\tshadowMaterial.dispose();\n\t\t\t\tdelete cache[ uuid ];\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n}\n\nfunction WebGLState( gl ) {\n\n\tfunction ColorBuffer() {\n\n\t\tlet locked = false;\n\n\t\tconst color = new Vector4();\n\t\tlet currentColorMask = null;\n\t\tconst currentColorClear = new Vector4( 0, 0, 0, 0 );\n\n\t\treturn {\n\n\t\t\tsetMask: function ( colorMask ) {\n\n\t\t\t\tif ( currentColorMask !== colorMask && ! locked ) {\n\n\t\t\t\t\tgl.colorMask( colorMask, colorMask, colorMask, colorMask );\n\t\t\t\t\tcurrentColorMask = colorMask;\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\tsetLocked: function ( lock ) {\n\n\t\t\t\tlocked = lock;\n\n\t\t\t},\n\n\t\t\tsetClear: function ( r, g, b, a, premultipliedAlpha ) {\n\n\t\t\t\tif ( premultipliedAlpha === true ) {\n\n\t\t\t\t\tr *= a; g *= a; b *= a;\n\n\t\t\t\t}\n\n\t\t\t\tcolor.set( r, g, b, a );\n\n\t\t\t\tif ( currentColorClear.equals( color ) === false ) {\n\n\t\t\t\t\tgl.clearColor( r, g, b, a );\n\t\t\t\t\tcurrentColorClear.copy( color );\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\treset: function () {\n\n\t\t\t\tlocked = false;\n\n\t\t\t\tcurrentColorMask = null;\n\t\t\t\tcurrentColorClear.set( - 1, 0, 0, 0 ); // set to invalid state\n\n\t\t\t}\n\n\t\t};\n\n\t}\n\n\tfunction DepthBuffer() {\n\n\t\tlet locked = false;\n\n\t\tlet currentDepthMask = null;\n\t\tlet currentDepthFunc = null;\n\t\tlet currentDepthClear = null;\n\n\t\treturn {\n\n\t\t\tsetTest: function ( depthTest ) {\n\n\t\t\t\tif ( depthTest ) {\n\n\t\t\t\t\tenable( gl.DEPTH_TEST );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tdisable( gl.DEPTH_TEST );\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\tsetMask: function ( depthMask ) {\n\n\t\t\t\tif ( currentDepthMask !== depthMask && ! locked ) {\n\n\t\t\t\t\tgl.depthMask( depthMask );\n\t\t\t\t\tcurrentDepthMask = depthMask;\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\tsetFunc: function ( depthFunc ) {\n\n\t\t\t\tif ( currentDepthFunc !== depthFunc ) {\n\n\t\t\t\t\tswitch ( depthFunc ) {\n\n\t\t\t\t\t\tcase NeverDepth:\n\n\t\t\t\t\t\t\tgl.depthFunc( gl.NEVER );\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase AlwaysDepth:\n\n\t\t\t\t\t\t\tgl.depthFunc( gl.ALWAYS );\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase LessDepth:\n\n\t\t\t\t\t\t\tgl.depthFunc( gl.LESS );\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase LessEqualDepth:\n\n\t\t\t\t\t\t\tgl.depthFunc( gl.LEQUAL );\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase EqualDepth:\n\n\t\t\t\t\t\t\tgl.depthFunc( gl.EQUAL );\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase GreaterEqualDepth:\n\n\t\t\t\t\t\t\tgl.depthFunc( gl.GEQUAL );\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase GreaterDepth:\n\n\t\t\t\t\t\t\tgl.depthFunc( gl.GREATER );\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase NotEqualDepth:\n\n\t\t\t\t\t\t\tgl.depthFunc( gl.NOTEQUAL );\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tdefault:\n\n\t\t\t\t\t\t\tgl.depthFunc( gl.LEQUAL );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tcurrentDepthFunc = depthFunc;\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\tsetLocked: function ( lock ) {\n\n\t\t\t\tlocked = lock;\n\n\t\t\t},\n\n\t\t\tsetClear: function ( depth ) {\n\n\t\t\t\tif ( currentDepthClear !== depth ) {\n\n\t\t\t\t\tgl.clearDepth( depth );\n\t\t\t\t\tcurrentDepthClear = depth;\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\treset: function () {\n\n\t\t\t\tlocked = false;\n\n\t\t\t\tcurrentDepthMask = null;\n\t\t\t\tcurrentDepthFunc = null;\n\t\t\t\tcurrentDepthClear = null;\n\n\t\t\t}\n\n\t\t};\n\n\t}\n\n\tfunction StencilBuffer() {\n\n\t\tlet locked = false;\n\n\t\tlet currentStencilMask = null;\n\t\tlet currentStencilFunc = null;\n\t\tlet currentStencilRef = null;\n\t\tlet currentStencilFuncMask = null;\n\t\tlet currentStencilFail = null;\n\t\tlet currentStencilZFail = null;\n\t\tlet currentStencilZPass = null;\n\t\tlet currentStencilClear = null;\n\n\t\treturn {\n\n\t\t\tsetTest: function ( stencilTest ) {\n\n\t\t\t\tif ( ! locked ) {\n\n\t\t\t\t\tif ( stencilTest ) {\n\n\t\t\t\t\t\tenable( gl.STENCIL_TEST );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tdisable( gl.STENCIL_TEST );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\tsetMask: function ( stencilMask ) {\n\n\t\t\t\tif ( currentStencilMask !== stencilMask && ! locked ) {\n\n\t\t\t\t\tgl.stencilMask( stencilMask );\n\t\t\t\t\tcurrentStencilMask = stencilMask;\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\tsetFunc: function ( stencilFunc, stencilRef, stencilMask ) {\n\n\t\t\t\tif ( currentStencilFunc !== stencilFunc ||\n\t\t\t\t currentStencilRef !== stencilRef ||\n\t\t\t\t currentStencilFuncMask !== stencilMask ) {\n\n\t\t\t\t\tgl.stencilFunc( stencilFunc, stencilRef, stencilMask );\n\n\t\t\t\t\tcurrentStencilFunc = stencilFunc;\n\t\t\t\t\tcurrentStencilRef = stencilRef;\n\t\t\t\t\tcurrentStencilFuncMask = stencilMask;\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\tsetOp: function ( stencilFail, stencilZFail, stencilZPass ) {\n\n\t\t\t\tif ( currentStencilFail !== stencilFail ||\n\t\t\t\t currentStencilZFail !== stencilZFail ||\n\t\t\t\t currentStencilZPass !== stencilZPass ) {\n\n\t\t\t\t\tgl.stencilOp( stencilFail, stencilZFail, stencilZPass );\n\n\t\t\t\t\tcurrentStencilFail = stencilFail;\n\t\t\t\t\tcurrentStencilZFail = stencilZFail;\n\t\t\t\t\tcurrentStencilZPass = stencilZPass;\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\tsetLocked: function ( lock ) {\n\n\t\t\t\tlocked = lock;\n\n\t\t\t},\n\n\t\t\tsetClear: function ( stencil ) {\n\n\t\t\t\tif ( currentStencilClear !== stencil ) {\n\n\t\t\t\t\tgl.clearStencil( stencil );\n\t\t\t\t\tcurrentStencilClear = stencil;\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\treset: function () {\n\n\t\t\t\tlocked = false;\n\n\t\t\t\tcurrentStencilMask = null;\n\t\t\t\tcurrentStencilFunc = null;\n\t\t\t\tcurrentStencilRef = null;\n\t\t\t\tcurrentStencilFuncMask = null;\n\t\t\t\tcurrentStencilFail = null;\n\t\t\t\tcurrentStencilZFail = null;\n\t\t\t\tcurrentStencilZPass = null;\n\t\t\t\tcurrentStencilClear = null;\n\n\t\t\t}\n\n\t\t};\n\n\t}\n\n\t//\n\n\tconst colorBuffer = new ColorBuffer();\n\tconst depthBuffer = new DepthBuffer();\n\tconst stencilBuffer = new StencilBuffer();\n\n\tconst uboBindings = new WeakMap();\n\tconst uboProgramMap = new WeakMap();\n\n\tlet enabledCapabilities = {};\n\n\tlet currentBoundFramebuffers = {};\n\tlet currentDrawbuffers = new WeakMap();\n\tlet defaultDrawbuffers = [];\n\n\tlet currentProgram = null;\n\n\tlet currentBlendingEnabled = false;\n\tlet currentBlending = null;\n\tlet currentBlendEquation = null;\n\tlet currentBlendSrc = null;\n\tlet currentBlendDst = null;\n\tlet currentBlendEquationAlpha = null;\n\tlet currentBlendSrcAlpha = null;\n\tlet currentBlendDstAlpha = null;\n\tlet currentBlendColor = new Color( 0, 0, 0 );\n\tlet currentBlendAlpha = 0;\n\tlet currentPremultipledAlpha = false;\n\n\tlet currentFlipSided = null;\n\tlet currentCullFace = null;\n\n\tlet currentLineWidth = null;\n\n\tlet currentPolygonOffsetFactor = null;\n\tlet currentPolygonOffsetUnits = null;\n\n\tconst maxTextures = gl.getParameter( gl.MAX_COMBINED_TEXTURE_IMAGE_UNITS );\n\n\tlet lineWidthAvailable = false;\n\tlet version = 0;\n\tconst glVersion = gl.getParameter( gl.VERSION );\n\n\tif ( glVersion.indexOf( 'WebGL' ) !== - 1 ) {\n\n\t\tversion = parseFloat( /^WebGL (\\d)/.exec( glVersion )[ 1 ] );\n\t\tlineWidthAvailable = ( version >= 1.0 );\n\n\t} else if ( glVersion.indexOf( 'OpenGL ES' ) !== - 1 ) {\n\n\t\tversion = parseFloat( /^OpenGL ES (\\d)/.exec( glVersion )[ 1 ] );\n\t\tlineWidthAvailable = ( version >= 2.0 );\n\n\t}\n\n\tlet currentTextureSlot = null;\n\tlet currentBoundTextures = {};\n\n\tconst scissorParam = gl.getParameter( gl.SCISSOR_BOX );\n\tconst viewportParam = gl.getParameter( gl.VIEWPORT );\n\n\tconst currentScissor = new Vector4().fromArray( scissorParam );\n\tconst currentViewport = new Vector4().fromArray( viewportParam );\n\n\tfunction createTexture( type, target, count, dimensions ) {\n\n\t\tconst data = new Uint8Array( 4 ); // 4 is required to match default unpack alignment of 4.\n\t\tconst texture = gl.createTexture();\n\n\t\tgl.bindTexture( type, texture );\n\t\tgl.texParameteri( type, gl.TEXTURE_MIN_FILTER, gl.NEAREST );\n\t\tgl.texParameteri( type, gl.TEXTURE_MAG_FILTER, gl.NEAREST );\n\n\t\tfor ( let i = 0; i < count; i ++ ) {\n\n\t\t\tif ( type === gl.TEXTURE_3D || type === gl.TEXTURE_2D_ARRAY ) {\n\n\t\t\t\tgl.texImage3D( target, 0, gl.RGBA, 1, 1, dimensions, 0, gl.RGBA, gl.UNSIGNED_BYTE, data );\n\n\t\t\t} else {\n\n\t\t\t\tgl.texImage2D( target + i, 0, gl.RGBA, 1, 1, 0, gl.RGBA, gl.UNSIGNED_BYTE, data );\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn texture;\n\n\t}\n\n\tconst emptyTextures = {};\n\temptyTextures[ gl.TEXTURE_2D ] = createTexture( gl.TEXTURE_2D, gl.TEXTURE_2D, 1 );\n\temptyTextures[ gl.TEXTURE_CUBE_MAP ] = createTexture( gl.TEXTURE_CUBE_MAP, gl.TEXTURE_CUBE_MAP_POSITIVE_X, 6 );\n\temptyTextures[ gl.TEXTURE_2D_ARRAY ] = createTexture( gl.TEXTURE_2D_ARRAY, gl.TEXTURE_2D_ARRAY, 1, 1 );\n\temptyTextures[ gl.TEXTURE_3D ] = createTexture( gl.TEXTURE_3D, gl.TEXTURE_3D, 1, 1 );\n\n\t// init\n\n\tcolorBuffer.setClear( 0, 0, 0, 1 );\n\tdepthBuffer.setClear( 1 );\n\tstencilBuffer.setClear( 0 );\n\n\tenable( gl.DEPTH_TEST );\n\tdepthBuffer.setFunc( LessEqualDepth );\n\n\tsetFlipSided( false );\n\tsetCullFace( CullFaceBack );\n\tenable( gl.CULL_FACE );\n\n\tsetBlending( NoBlending );\n\n\t//\n\n\tfunction enable( id ) {\n\n\t\tif ( enabledCapabilities[ id ] !== true ) {\n\n\t\t\tgl.enable( id );\n\t\t\tenabledCapabilities[ id ] = true;\n\n\t\t}\n\n\t}\n\n\tfunction disable( id ) {\n\n\t\tif ( enabledCapabilities[ id ] !== false ) {\n\n\t\t\tgl.disable( id );\n\t\t\tenabledCapabilities[ id ] = false;\n\n\t\t}\n\n\t}\n\n\tfunction bindFramebuffer( target, framebuffer ) {\n\n\t\tif ( currentBoundFramebuffers[ target ] !== framebuffer ) {\n\n\t\t\tgl.bindFramebuffer( target, framebuffer );\n\n\t\t\tcurrentBoundFramebuffers[ target ] = framebuffer;\n\n\t\t\t// gl.DRAW_FRAMEBUFFER is equivalent to gl.FRAMEBUFFER\n\n\t\t\tif ( target === gl.DRAW_FRAMEBUFFER ) {\n\n\t\t\t\tcurrentBoundFramebuffers[ gl.FRAMEBUFFER ] = framebuffer;\n\n\t\t\t}\n\n\t\t\tif ( target === gl.FRAMEBUFFER ) {\n\n\t\t\t\tcurrentBoundFramebuffers[ gl.DRAW_FRAMEBUFFER ] = framebuffer;\n\n\t\t\t}\n\n\t\t\treturn true;\n\n\t\t}\n\n\t\treturn false;\n\n\t}\n\n\tfunction drawBuffers( renderTarget, framebuffer ) {\n\n\t\tlet drawBuffers = defaultDrawbuffers;\n\n\t\tlet needsUpdate = false;\n\n\t\tif ( renderTarget ) {\n\n\t\t\tdrawBuffers = currentDrawbuffers.get( framebuffer );\n\n\t\t\tif ( drawBuffers === undefined ) {\n\n\t\t\t\tdrawBuffers = [];\n\t\t\t\tcurrentDrawbuffers.set( framebuffer, drawBuffers );\n\n\t\t\t}\n\n\t\t\tconst textures = renderTarget.textures;\n\n\t\t\tif ( drawBuffers.length !== textures.length || drawBuffers[ 0 ] !== gl.COLOR_ATTACHMENT0 ) {\n\n\t\t\t\tfor ( let i = 0, il = textures.length; i < il; i ++ ) {\n\n\t\t\t\t\tdrawBuffers[ i ] = gl.COLOR_ATTACHMENT0 + i;\n\n\t\t\t\t}\n\n\t\t\t\tdrawBuffers.length = textures.length;\n\n\t\t\t\tneedsUpdate = true;\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tif ( drawBuffers[ 0 ] !== gl.BACK ) {\n\n\t\t\t\tdrawBuffers[ 0 ] = gl.BACK;\n\n\t\t\t\tneedsUpdate = true;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( needsUpdate ) {\n\n\t\t\tgl.drawBuffers( drawBuffers );\n\n\t\t}\n\n\t}\n\n\tfunction useProgram( program ) {\n\n\t\tif ( currentProgram !== program ) {\n\n\t\t\tgl.useProgram( program );\n\n\t\t\tcurrentProgram = program;\n\n\t\t\treturn true;\n\n\t\t}\n\n\t\treturn false;\n\n\t}\n\n\tconst equationToGL = {\n\t\t[ AddEquation ]: gl.FUNC_ADD,\n\t\t[ SubtractEquation ]: gl.FUNC_SUBTRACT,\n\t\t[ ReverseSubtractEquation ]: gl.FUNC_REVERSE_SUBTRACT\n\t};\n\n\tequationToGL[ MinEquation ] = gl.MIN;\n\tequationToGL[ MaxEquation ] = gl.MAX;\n\n\tconst factorToGL = {\n\t\t[ ZeroFactor ]: gl.ZERO,\n\t\t[ OneFactor ]: gl.ONE,\n\t\t[ SrcColorFactor ]: gl.SRC_COLOR,\n\t\t[ SrcAlphaFactor ]: gl.SRC_ALPHA,\n\t\t[ SrcAlphaSaturateFactor ]: gl.SRC_ALPHA_SATURATE,\n\t\t[ DstColorFactor ]: gl.DST_COLOR,\n\t\t[ DstAlphaFactor ]: gl.DST_ALPHA,\n\t\t[ OneMinusSrcColorFactor ]: gl.ONE_MINUS_SRC_COLOR,\n\t\t[ OneMinusSrcAlphaFactor ]: gl.ONE_MINUS_SRC_ALPHA,\n\t\t[ OneMinusDstColorFactor ]: gl.ONE_MINUS_DST_COLOR,\n\t\t[ OneMinusDstAlphaFactor ]: gl.ONE_MINUS_DST_ALPHA,\n\t\t[ ConstantColorFactor ]: gl.CONSTANT_COLOR,\n\t\t[ OneMinusConstantColorFactor ]: gl.ONE_MINUS_CONSTANT_COLOR,\n\t\t[ ConstantAlphaFactor ]: gl.CONSTANT_ALPHA,\n\t\t[ OneMinusConstantAlphaFactor ]: gl.ONE_MINUS_CONSTANT_ALPHA\n\t};\n\n\tfunction setBlending( blending, blendEquation, blendSrc, blendDst, blendEquationAlpha, blendSrcAlpha, blendDstAlpha, blendColor, blendAlpha, premultipliedAlpha ) {\n\n\t\tif ( blending === NoBlending ) {\n\n\t\t\tif ( currentBlendingEnabled === true ) {\n\n\t\t\t\tdisable( gl.BLEND );\n\t\t\t\tcurrentBlendingEnabled = false;\n\n\t\t\t}\n\n\t\t\treturn;\n\n\t\t}\n\n\t\tif ( currentBlendingEnabled === false ) {\n\n\t\t\tenable( gl.BLEND );\n\t\t\tcurrentBlendingEnabled = true;\n\n\t\t}\n\n\t\tif ( blending !== CustomBlending ) {\n\n\t\t\tif ( blending !== currentBlending || premultipliedAlpha !== currentPremultipledAlpha ) {\n\n\t\t\t\tif ( currentBlendEquation !== AddEquation || currentBlendEquationAlpha !== AddEquation ) {\n\n\t\t\t\t\tgl.blendEquation( gl.FUNC_ADD );\n\n\t\t\t\t\tcurrentBlendEquation = AddEquation;\n\t\t\t\t\tcurrentBlendEquationAlpha = AddEquation;\n\n\t\t\t\t}\n\n\t\t\t\tif ( premultipliedAlpha ) {\n\n\t\t\t\t\tswitch ( blending ) {\n\n\t\t\t\t\t\tcase NormalBlending:\n\t\t\t\t\t\t\tgl.blendFuncSeparate( gl.ONE, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE_MINUS_SRC_ALPHA );\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase AdditiveBlending:\n\t\t\t\t\t\t\tgl.blendFunc( gl.ONE, gl.ONE );\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase SubtractiveBlending:\n\t\t\t\t\t\t\tgl.blendFuncSeparate( gl.ZERO, gl.ONE_MINUS_SRC_COLOR, gl.ZERO, gl.ONE );\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase MultiplyBlending:\n\t\t\t\t\t\t\tgl.blendFuncSeparate( gl.ZERO, gl.SRC_COLOR, gl.ZERO, gl.SRC_ALPHA );\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tdefault:\n\t\t\t\t\t\t\tconsole.error( 'THREE.WebGLState: Invalid blending: ', blending );\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\tswitch ( blending ) {\n\n\t\t\t\t\t\tcase NormalBlending:\n\t\t\t\t\t\t\tgl.blendFuncSeparate( gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE_MINUS_SRC_ALPHA );\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase AdditiveBlending:\n\t\t\t\t\t\t\tgl.blendFunc( gl.SRC_ALPHA, gl.ONE );\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase SubtractiveBlending:\n\t\t\t\t\t\t\tgl.blendFuncSeparate( gl.ZERO, gl.ONE_MINUS_SRC_COLOR, gl.ZERO, gl.ONE );\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase MultiplyBlending:\n\t\t\t\t\t\t\tgl.blendFunc( gl.ZERO, gl.SRC_COLOR );\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tdefault:\n\t\t\t\t\t\t\tconsole.error( 'THREE.WebGLState: Invalid blending: ', blending );\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tcurrentBlendSrc = null;\n\t\t\t\tcurrentBlendDst = null;\n\t\t\t\tcurrentBlendSrcAlpha = null;\n\t\t\t\tcurrentBlendDstAlpha = null;\n\t\t\t\tcurrentBlendColor.set( 0, 0, 0 );\n\t\t\t\tcurrentBlendAlpha = 0;\n\n\t\t\t\tcurrentBlending = blending;\n\t\t\t\tcurrentPremultipledAlpha = premultipliedAlpha;\n\n\t\t\t}\n\n\t\t\treturn;\n\n\t\t}\n\n\t\t// custom blending\n\n\t\tblendEquationAlpha = blendEquationAlpha || blendEquation;\n\t\tblendSrcAlpha = blendSrcAlpha || blendSrc;\n\t\tblendDstAlpha = blendDstAlpha || blendDst;\n\n\t\tif ( blendEquation !== currentBlendEquation || blendEquationAlpha !== currentBlendEquationAlpha ) {\n\n\t\t\tgl.blendEquationSeparate( equationToGL[ blendEquation ], equationToGL[ blendEquationAlpha ] );\n\n\t\t\tcurrentBlendEquation = blendEquation;\n\t\t\tcurrentBlendEquationAlpha = blendEquationAlpha;\n\n\t\t}\n\n\t\tif ( blendSrc !== currentBlendSrc || blendDst !== currentBlendDst || blendSrcAlpha !== currentBlendSrcAlpha || blendDstAlpha !== currentBlendDstAlpha ) {\n\n\t\t\tgl.blendFuncSeparate( factorToGL[ blendSrc ], factorToGL[ blendDst ], factorToGL[ blendSrcAlpha ], factorToGL[ blendDstAlpha ] );\n\n\t\t\tcurrentBlendSrc = blendSrc;\n\t\t\tcurrentBlendDst = blendDst;\n\t\t\tcurrentBlendSrcAlpha = blendSrcAlpha;\n\t\t\tcurrentBlendDstAlpha = blendDstAlpha;\n\n\t\t}\n\n\t\tif ( blendColor.equals( currentBlendColor ) === false || blendAlpha !== currentBlendAlpha ) {\n\n\t\t\tgl.blendColor( blendColor.r, blendColor.g, blendColor.b, blendAlpha );\n\n\t\t\tcurrentBlendColor.copy( blendColor );\n\t\t\tcurrentBlendAlpha = blendAlpha;\n\n\t\t}\n\n\t\tcurrentBlending = blending;\n\t\tcurrentPremultipledAlpha = false;\n\n\t}\n\n\tfunction setMaterial( material, frontFaceCW ) {\n\n\t\tmaterial.side === DoubleSide\n\t\t\t? disable( gl.CULL_FACE )\n\t\t\t: enable( gl.CULL_FACE );\n\n\t\tlet flipSided = ( material.side === BackSide );\n\t\tif ( frontFaceCW ) flipSided = ! flipSided;\n\n\t\tsetFlipSided( flipSided );\n\n\t\t( material.blending === NormalBlending && material.transparent === false )\n\t\t\t? setBlending( NoBlending )\n\t\t\t: setBlending( material.blending, material.blendEquation, material.blendSrc, material.blendDst, material.blendEquationAlpha, material.blendSrcAlpha, material.blendDstAlpha, material.blendColor, material.blendAlpha, material.premultipliedAlpha );\n\n\t\tdepthBuffer.setFunc( material.depthFunc );\n\t\tdepthBuffer.setTest( material.depthTest );\n\t\tdepthBuffer.setMask( material.depthWrite );\n\t\tcolorBuffer.setMask( material.colorWrite );\n\n\t\tconst stencilWrite = material.stencilWrite;\n\t\tstencilBuffer.setTest( stencilWrite );\n\t\tif ( stencilWrite ) {\n\n\t\t\tstencilBuffer.setMask( material.stencilWriteMask );\n\t\t\tstencilBuffer.setFunc( material.stencilFunc, material.stencilRef, material.stencilFuncMask );\n\t\t\tstencilBuffer.setOp( material.stencilFail, material.stencilZFail, material.stencilZPass );\n\n\t\t}\n\n\t\tsetPolygonOffset( material.polygonOffset, material.polygonOffsetFactor, material.polygonOffsetUnits );\n\n\t\tmaterial.alphaToCoverage === true\n\t\t\t? enable( gl.SAMPLE_ALPHA_TO_COVERAGE )\n\t\t\t: disable( gl.SAMPLE_ALPHA_TO_COVERAGE );\n\n\t}\n\n\t//\n\n\tfunction setFlipSided( flipSided ) {\n\n\t\tif ( currentFlipSided !== flipSided ) {\n\n\t\t\tif ( flipSided ) {\n\n\t\t\t\tgl.frontFace( gl.CW );\n\n\t\t\t} else {\n\n\t\t\t\tgl.frontFace( gl.CCW );\n\n\t\t\t}\n\n\t\t\tcurrentFlipSided = flipSided;\n\n\t\t}\n\n\t}\n\n\tfunction setCullFace( cullFace ) {\n\n\t\tif ( cullFace !== CullFaceNone ) {\n\n\t\t\tenable( gl.CULL_FACE );\n\n\t\t\tif ( cullFace !== currentCullFace ) {\n\n\t\t\t\tif ( cullFace === CullFaceBack ) {\n\n\t\t\t\t\tgl.cullFace( gl.BACK );\n\n\t\t\t\t} else if ( cullFace === CullFaceFront ) {\n\n\t\t\t\t\tgl.cullFace( gl.FRONT );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tgl.cullFace( gl.FRONT_AND_BACK );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tdisable( gl.CULL_FACE );\n\n\t\t}\n\n\t\tcurrentCullFace = cullFace;\n\n\t}\n\n\tfunction setLineWidth( width ) {\n\n\t\tif ( width !== currentLineWidth ) {\n\n\t\t\tif ( lineWidthAvailable ) gl.lineWidth( width );\n\n\t\t\tcurrentLineWidth = width;\n\n\t\t}\n\n\t}\n\n\tfunction setPolygonOffset( polygonOffset, factor, units ) {\n\n\t\tif ( polygonOffset ) {\n\n\t\t\tenable( gl.POLYGON_OFFSET_FILL );\n\n\t\t\tif ( currentPolygonOffsetFactor !== factor || currentPolygonOffsetUnits !== units ) {\n\n\t\t\t\tgl.polygonOffset( factor, units );\n\n\t\t\t\tcurrentPolygonOffsetFactor = factor;\n\t\t\t\tcurrentPolygonOffsetUnits = units;\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tdisable( gl.POLYGON_OFFSET_FILL );\n\n\t\t}\n\n\t}\n\n\tfunction setScissorTest( scissorTest ) {\n\n\t\tif ( scissorTest ) {\n\n\t\t\tenable( gl.SCISSOR_TEST );\n\n\t\t} else {\n\n\t\t\tdisable( gl.SCISSOR_TEST );\n\n\t\t}\n\n\t}\n\n\t// texture\n\n\tfunction activeTexture( webglSlot ) {\n\n\t\tif ( webglSlot === undefined ) webglSlot = gl.TEXTURE0 + maxTextures - 1;\n\n\t\tif ( currentTextureSlot !== webglSlot ) {\n\n\t\t\tgl.activeTexture( webglSlot );\n\t\t\tcurrentTextureSlot = webglSlot;\n\n\t\t}\n\n\t}\n\n\tfunction bindTexture( webglType, webglTexture, webglSlot ) {\n\n\t\tif ( webglSlot === undefined ) {\n\n\t\t\tif ( currentTextureSlot === null ) {\n\n\t\t\t\twebglSlot = gl.TEXTURE0 + maxTextures - 1;\n\n\t\t\t} else {\n\n\t\t\t\twebglSlot = currentTextureSlot;\n\n\t\t\t}\n\n\t\t}\n\n\t\tlet boundTexture = currentBoundTextures[ webglSlot ];\n\n\t\tif ( boundTexture === undefined ) {\n\n\t\t\tboundTexture = { type: undefined, texture: undefined };\n\t\t\tcurrentBoundTextures[ webglSlot ] = boundTexture;\n\n\t\t}\n\n\t\tif ( boundTexture.type !== webglType || boundTexture.texture !== webglTexture ) {\n\n\t\t\tif ( currentTextureSlot !== webglSlot ) {\n\n\t\t\t\tgl.activeTexture( webglSlot );\n\t\t\t\tcurrentTextureSlot = webglSlot;\n\n\t\t\t}\n\n\t\t\tgl.bindTexture( webglType, webglTexture || emptyTextures[ webglType ] );\n\n\t\t\tboundTexture.type = webglType;\n\t\t\tboundTexture.texture = webglTexture;\n\n\t\t}\n\n\t}\n\n\tfunction unbindTexture() {\n\n\t\tconst boundTexture = currentBoundTextures[ currentTextureSlot ];\n\n\t\tif ( boundTexture !== undefined && boundTexture.type !== undefined ) {\n\n\t\t\tgl.bindTexture( boundTexture.type, null );\n\n\t\t\tboundTexture.type = undefined;\n\t\t\tboundTexture.texture = undefined;\n\n\t\t}\n\n\t}\n\n\tfunction compressedTexImage2D() {\n\n\t\ttry {\n\n\t\t\tgl.compressedTexImage2D.apply( gl, arguments );\n\n\t\t} catch ( error ) {\n\n\t\t\tconsole.error( 'THREE.WebGLState:', error );\n\n\t\t}\n\n\t}\n\n\tfunction compressedTexImage3D() {\n\n\t\ttry {\n\n\t\t\tgl.compressedTexImage3D.apply( gl, arguments );\n\n\t\t} catch ( error ) {\n\n\t\t\tconsole.error( 'THREE.WebGLState:', error );\n\n\t\t}\n\n\t}\n\n\tfunction texSubImage2D() {\n\n\t\ttry {\n\n\t\t\tgl.texSubImage2D.apply( gl, arguments );\n\n\t\t} catch ( error ) {\n\n\t\t\tconsole.error( 'THREE.WebGLState:', error );\n\n\t\t}\n\n\t}\n\n\tfunction texSubImage3D() {\n\n\t\ttry {\n\n\t\t\tgl.texSubImage3D.apply( gl, arguments );\n\n\t\t} catch ( error ) {\n\n\t\t\tconsole.error( 'THREE.WebGLState:', error );\n\n\t\t}\n\n\t}\n\n\tfunction compressedTexSubImage2D() {\n\n\t\ttry {\n\n\t\t\tgl.compressedTexSubImage2D.apply( gl, arguments );\n\n\t\t} catch ( error ) {\n\n\t\t\tconsole.error( 'THREE.WebGLState:', error );\n\n\t\t}\n\n\t}\n\n\tfunction compressedTexSubImage3D() {\n\n\t\ttry {\n\n\t\t\tgl.compressedTexSubImage3D.apply( gl, arguments );\n\n\t\t} catch ( error ) {\n\n\t\t\tconsole.error( 'THREE.WebGLState:', error );\n\n\t\t}\n\n\t}\n\n\tfunction texStorage2D() {\n\n\t\ttry {\n\n\t\t\tgl.texStorage2D.apply( gl, arguments );\n\n\t\t} catch ( error ) {\n\n\t\t\tconsole.error( 'THREE.WebGLState:', error );\n\n\t\t}\n\n\t}\n\n\tfunction texStorage3D() {\n\n\t\ttry {\n\n\t\t\tgl.texStorage3D.apply( gl, arguments );\n\n\t\t} catch ( error ) {\n\n\t\t\tconsole.error( 'THREE.WebGLState:', error );\n\n\t\t}\n\n\t}\n\n\tfunction texImage2D() {\n\n\t\ttry {\n\n\t\t\tgl.texImage2D.apply( gl, arguments );\n\n\t\t} catch ( error ) {\n\n\t\t\tconsole.error( 'THREE.WebGLState:', error );\n\n\t\t}\n\n\t}\n\n\tfunction texImage3D() {\n\n\t\ttry {\n\n\t\t\tgl.texImage3D.apply( gl, arguments );\n\n\t\t} catch ( error ) {\n\n\t\t\tconsole.error( 'THREE.WebGLState:', error );\n\n\t\t}\n\n\t}\n\n\t//\n\n\tfunction scissor( scissor ) {\n\n\t\tif ( currentScissor.equals( scissor ) === false ) {\n\n\t\t\tgl.scissor( scissor.x, scissor.y, scissor.z, scissor.w );\n\t\t\tcurrentScissor.copy( scissor );\n\n\t\t}\n\n\t}\n\n\tfunction viewport( viewport ) {\n\n\t\tif ( currentViewport.equals( viewport ) === false ) {\n\n\t\t\tgl.viewport( viewport.x, viewport.y, viewport.z, viewport.w );\n\t\t\tcurrentViewport.copy( viewport );\n\n\t\t}\n\n\t}\n\n\tfunction updateUBOMapping( uniformsGroup, program ) {\n\n\t\tlet mapping = uboProgramMap.get( program );\n\n\t\tif ( mapping === undefined ) {\n\n\t\t\tmapping = new WeakMap();\n\n\t\t\tuboProgramMap.set( program, mapping );\n\n\t\t}\n\n\t\tlet blockIndex = mapping.get( uniformsGroup );\n\n\t\tif ( blockIndex === undefined ) {\n\n\t\t\tblockIndex = gl.getUniformBlockIndex( program, uniformsGroup.name );\n\n\t\t\tmapping.set( uniformsGroup, blockIndex );\n\n\t\t}\n\n\t}\n\n\tfunction uniformBlockBinding( uniformsGroup, program ) {\n\n\t\tconst mapping = uboProgramMap.get( program );\n\t\tconst blockIndex = mapping.get( uniformsGroup );\n\n\t\tif ( uboBindings.get( program ) !== blockIndex ) {\n\n\t\t\t// bind shader specific block index to global block point\n\t\t\tgl.uniformBlockBinding( program, blockIndex, uniformsGroup.__bindingPointIndex );\n\n\t\t\tuboBindings.set( program, blockIndex );\n\n\t\t}\n\n\t}\n\n\t//\n\n\tfunction reset() {\n\n\t\t// reset state\n\n\t\tgl.disable( gl.BLEND );\n\t\tgl.disable( gl.CULL_FACE );\n\t\tgl.disable( gl.DEPTH_TEST );\n\t\tgl.disable( gl.POLYGON_OFFSET_FILL );\n\t\tgl.disable( gl.SCISSOR_TEST );\n\t\tgl.disable( gl.STENCIL_TEST );\n\t\tgl.disable( gl.SAMPLE_ALPHA_TO_COVERAGE );\n\n\t\tgl.blendEquation( gl.FUNC_ADD );\n\t\tgl.blendFunc( gl.ONE, gl.ZERO );\n\t\tgl.blendFuncSeparate( gl.ONE, gl.ZERO, gl.ONE, gl.ZERO );\n\t\tgl.blendColor( 0, 0, 0, 0 );\n\n\t\tgl.colorMask( true, true, true, true );\n\t\tgl.clearColor( 0, 0, 0, 0 );\n\n\t\tgl.depthMask( true );\n\t\tgl.depthFunc( gl.LESS );\n\t\tgl.clearDepth( 1 );\n\n\t\tgl.stencilMask( 0xffffffff );\n\t\tgl.stencilFunc( gl.ALWAYS, 0, 0xffffffff );\n\t\tgl.stencilOp( gl.KEEP, gl.KEEP, gl.KEEP );\n\t\tgl.clearStencil( 0 );\n\n\t\tgl.cullFace( gl.BACK );\n\t\tgl.frontFace( gl.CCW );\n\n\t\tgl.polygonOffset( 0, 0 );\n\n\t\tgl.activeTexture( gl.TEXTURE0 );\n\n\t\tgl.bindFramebuffer( gl.FRAMEBUFFER, null );\n\t\tgl.bindFramebuffer( gl.DRAW_FRAMEBUFFER, null );\n\t\tgl.bindFramebuffer( gl.READ_FRAMEBUFFER, null );\n\n\t\tgl.useProgram( null );\n\n\t\tgl.lineWidth( 1 );\n\n\t\tgl.scissor( 0, 0, gl.canvas.width, gl.canvas.height );\n\t\tgl.viewport( 0, 0, gl.canvas.width, gl.canvas.height );\n\n\t\t// reset internals\n\n\t\tenabledCapabilities = {};\n\n\t\tcurrentTextureSlot = null;\n\t\tcurrentBoundTextures = {};\n\n\t\tcurrentBoundFramebuffers = {};\n\t\tcurrentDrawbuffers = new WeakMap();\n\t\tdefaultDrawbuffers = [];\n\n\t\tcurrentProgram = null;\n\n\t\tcurrentBlendingEnabled = false;\n\t\tcurrentBlending = null;\n\t\tcurrentBlendEquation = null;\n\t\tcurrentBlendSrc = null;\n\t\tcurrentBlendDst = null;\n\t\tcurrentBlendEquationAlpha = null;\n\t\tcurrentBlendSrcAlpha = null;\n\t\tcurrentBlendDstAlpha = null;\n\t\tcurrentBlendColor = new Color( 0, 0, 0 );\n\t\tcurrentBlendAlpha = 0;\n\t\tcurrentPremultipledAlpha = false;\n\n\t\tcurrentFlipSided = null;\n\t\tcurrentCullFace = null;\n\n\t\tcurrentLineWidth = null;\n\n\t\tcurrentPolygonOffsetFactor = null;\n\t\tcurrentPolygonOffsetUnits = null;\n\n\t\tcurrentScissor.set( 0, 0, gl.canvas.width, gl.canvas.height );\n\t\tcurrentViewport.set( 0, 0, gl.canvas.width, gl.canvas.height );\n\n\t\tcolorBuffer.reset();\n\t\tdepthBuffer.reset();\n\t\tstencilBuffer.reset();\n\n\t}\n\n\treturn {\n\n\t\tbuffers: {\n\t\t\tcolor: colorBuffer,\n\t\t\tdepth: depthBuffer,\n\t\t\tstencil: stencilBuffer\n\t\t},\n\n\t\tenable: enable,\n\t\tdisable: disable,\n\n\t\tbindFramebuffer: bindFramebuffer,\n\t\tdrawBuffers: drawBuffers,\n\n\t\tuseProgram: useProgram,\n\n\t\tsetBlending: setBlending,\n\t\tsetMaterial: setMaterial,\n\n\t\tsetFlipSided: setFlipSided,\n\t\tsetCullFace: setCullFace,\n\n\t\tsetLineWidth: setLineWidth,\n\t\tsetPolygonOffset: setPolygonOffset,\n\n\t\tsetScissorTest: setScissorTest,\n\n\t\tactiveTexture: activeTexture,\n\t\tbindTexture: bindTexture,\n\t\tunbindTexture: unbindTexture,\n\t\tcompressedTexImage2D: compressedTexImage2D,\n\t\tcompressedTexImage3D: compressedTexImage3D,\n\t\ttexImage2D: texImage2D,\n\t\ttexImage3D: texImage3D,\n\n\t\tupdateUBOMapping: updateUBOMapping,\n\t\tuniformBlockBinding: uniformBlockBinding,\n\n\t\ttexStorage2D: texStorage2D,\n\t\ttexStorage3D: texStorage3D,\n\t\ttexSubImage2D: texSubImage2D,\n\t\ttexSubImage3D: texSubImage3D,\n\t\tcompressedTexSubImage2D: compressedTexSubImage2D,\n\t\tcompressedTexSubImage3D: compressedTexSubImage3D,\n\n\t\tscissor: scissor,\n\t\tviewport: viewport,\n\n\t\treset: reset\n\n\t};\n\n}\n\nfunction WebGLTextures( _gl, extensions, state, properties, capabilities, utils, info ) {\n\n\tconst multisampledRTTExt = extensions.has( 'WEBGL_multisampled_render_to_texture' ) ? extensions.get( 'WEBGL_multisampled_render_to_texture' ) : null;\n\tconst supportsInvalidateFramebuffer = typeof navigator === 'undefined' ? false : /OculusBrowser/g.test( navigator.userAgent );\n\n\tconst _imageDimensions = new Vector2();\n\tconst _videoTextures = new WeakMap();\n\tlet _canvas;\n\n\tconst _sources = new WeakMap(); // maps WebglTexture objects to instances of Source\n\n\t// cordova iOS (as of 5.0) still uses UIWebView, which provides OffscreenCanvas,\n\t// also OffscreenCanvas.getContext(\"webgl\"), but not OffscreenCanvas.getContext(\"2d\")!\n\t// Some implementations may only implement OffscreenCanvas partially (e.g. lacking 2d).\n\n\tlet useOffscreenCanvas = false;\n\n\ttry {\n\n\t\tuseOffscreenCanvas = typeof OffscreenCanvas !== 'undefined'\n\t\t\t// eslint-disable-next-line compat/compat\n\t\t\t&& ( new OffscreenCanvas( 1, 1 ).getContext( '2d' ) ) !== null;\n\n\t} catch ( err ) {\n\n\t\t// Ignore any errors\n\n\t}\n\n\tfunction createCanvas( width, height ) {\n\n\t\t// Use OffscreenCanvas when available. Specially needed in web workers\n\n\t\treturn useOffscreenCanvas ?\n\t\t\t// eslint-disable-next-line compat/compat\n\t\t\tnew OffscreenCanvas( width, height ) : createElementNS( 'canvas' );\n\n\t}\n\n\tfunction resizeImage( image, needsNewCanvas, maxSize ) {\n\n\t\tlet scale = 1;\n\n\t\tconst dimensions = getDimensions( image );\n\n\t\t// handle case if texture exceeds max size\n\n\t\tif ( dimensions.width > maxSize || dimensions.height > maxSize ) {\n\n\t\t\tscale = maxSize / Math.max( dimensions.width, dimensions.height );\n\n\t\t}\n\n\t\t// only perform resize if necessary\n\n\t\tif ( scale < 1 ) {\n\n\t\t\t// only perform resize for certain image types\n\n\t\t\tif ( ( typeof HTMLImageElement !== 'undefined' && image instanceof HTMLImageElement ) ||\n\t\t\t\t( typeof HTMLCanvasElement !== 'undefined' && image instanceof HTMLCanvasElement ) ||\n\t\t\t\t( typeof ImageBitmap !== 'undefined' && image instanceof ImageBitmap ) ||\n\t\t\t\t( typeof VideoFrame !== 'undefined' && image instanceof VideoFrame ) ) {\n\n\t\t\t\tconst width = Math.floor( scale * dimensions.width );\n\t\t\t\tconst height = Math.floor( scale * dimensions.height );\n\n\t\t\t\tif ( _canvas === undefined ) _canvas = createCanvas( width, height );\n\n\t\t\t\t// cube textures can't reuse the same canvas\n\n\t\t\t\tconst canvas = needsNewCanvas ? createCanvas( width, height ) : _canvas;\n\n\t\t\t\tcanvas.width = width;\n\t\t\t\tcanvas.height = height;\n\n\t\t\t\tconst context = canvas.getContext( '2d' );\n\t\t\t\tcontext.drawImage( image, 0, 0, width, height );\n\n\t\t\t\tconsole.warn( 'THREE.WebGLRenderer: Texture has been resized from (' + dimensions.width + 'x' + dimensions.height + ') to (' + width + 'x' + height + ').' );\n\n\t\t\t\treturn canvas;\n\n\t\t\t} else {\n\n\t\t\t\tif ( 'data' in image ) {\n\n\t\t\t\t\tconsole.warn( 'THREE.WebGLRenderer: Image in DataTexture is too big (' + dimensions.width + 'x' + dimensions.height + ').' );\n\n\t\t\t\t}\n\n\t\t\t\treturn image;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn image;\n\n\t}\n\n\tfunction textureNeedsGenerateMipmaps( texture ) {\n\n\t\treturn texture.generateMipmaps && texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter;\n\n\t}\n\n\tfunction generateMipmap( target ) {\n\n\t\t_gl.generateMipmap( target );\n\n\t}\n\n\tfunction getInternalFormat( internalFormatName, glFormat, glType, colorSpace, forceLinearTransfer = false ) {\n\n\t\tif ( internalFormatName !== null ) {\n\n\t\t\tif ( _gl[ internalFormatName ] !== undefined ) return _gl[ internalFormatName ];\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: Attempt to use non-existing WebGL internal format \\'' + internalFormatName + '\\'' );\n\n\t\t}\n\n\t\tlet internalFormat = glFormat;\n\n\t\tif ( glFormat === _gl.RED ) {\n\n\t\t\tif ( glType === _gl.FLOAT ) internalFormat = _gl.R32F;\n\t\t\tif ( glType === _gl.HALF_FLOAT ) internalFormat = _gl.R16F;\n\t\t\tif ( glType === _gl.UNSIGNED_BYTE ) internalFormat = _gl.R8;\n\n\t\t}\n\n\t\tif ( glFormat === _gl.RED_INTEGER ) {\n\n\t\t\tif ( glType === _gl.UNSIGNED_BYTE ) internalFormat = _gl.R8UI;\n\t\t\tif ( glType === _gl.UNSIGNED_SHORT ) internalFormat = _gl.R16UI;\n\t\t\tif ( glType === _gl.UNSIGNED_INT ) internalFormat = _gl.R32UI;\n\t\t\tif ( glType === _gl.BYTE ) internalFormat = _gl.R8I;\n\t\t\tif ( glType === _gl.SHORT ) internalFormat = _gl.R16I;\n\t\t\tif ( glType === _gl.INT ) internalFormat = _gl.R32I;\n\n\t\t}\n\n\t\tif ( glFormat === _gl.RG ) {\n\n\t\t\tif ( glType === _gl.FLOAT ) internalFormat = _gl.RG32F;\n\t\t\tif ( glType === _gl.HALF_FLOAT ) internalFormat = _gl.RG16F;\n\t\t\tif ( glType === _gl.UNSIGNED_BYTE ) internalFormat = _gl.RG8;\n\n\t\t}\n\n\t\tif ( glFormat === _gl.RG_INTEGER ) {\n\n\t\t\tif ( glType === _gl.UNSIGNED_BYTE ) internalFormat = _gl.RG8UI;\n\t\t\tif ( glType === _gl.UNSIGNED_SHORT ) internalFormat = _gl.RG16UI;\n\t\t\tif ( glType === _gl.UNSIGNED_INT ) internalFormat = _gl.RG32UI;\n\t\t\tif ( glType === _gl.BYTE ) internalFormat = _gl.RG8I;\n\t\t\tif ( glType === _gl.SHORT ) internalFormat = _gl.RG16I;\n\t\t\tif ( glType === _gl.INT ) internalFormat = _gl.RG32I;\n\n\t\t}\n\n\t\tif ( glFormat === _gl.RGB ) {\n\n\t\t\tif ( glType === _gl.UNSIGNED_INT_5_9_9_9_REV ) internalFormat = _gl.RGB9_E5;\n\n\t\t}\n\n\t\tif ( glFormat === _gl.RGBA ) {\n\n\t\t\tconst transfer = forceLinearTransfer ? LinearTransfer : ColorManagement.getTransfer( colorSpace );\n\n\t\t\tif ( glType === _gl.FLOAT ) internalFormat = _gl.RGBA32F;\n\t\t\tif ( glType === _gl.HALF_FLOAT ) internalFormat = _gl.RGBA16F;\n\t\t\tif ( glType === _gl.UNSIGNED_BYTE ) internalFormat = ( transfer === SRGBTransfer ) ? _gl.SRGB8_ALPHA8 : _gl.RGBA8;\n\t\t\tif ( glType === _gl.UNSIGNED_SHORT_4_4_4_4 ) internalFormat = _gl.RGBA4;\n\t\t\tif ( glType === _gl.UNSIGNED_SHORT_5_5_5_1 ) internalFormat = _gl.RGB5_A1;\n\n\t\t}\n\n\t\tif ( internalFormat === _gl.R16F || internalFormat === _gl.R32F ||\n\t\t\tinternalFormat === _gl.RG16F || internalFormat === _gl.RG32F ||\n\t\t\tinternalFormat === _gl.RGBA16F || internalFormat === _gl.RGBA32F ) {\n\n\t\t\textensions.get( 'EXT_color_buffer_float' );\n\n\t\t}\n\n\t\treturn internalFormat;\n\n\t}\n\n\tfunction getInternalDepthFormat( useStencil, depthType ) {\n\n\t\tlet glInternalFormat;\n\t\tif ( useStencil ) {\n\n\t\t\tif ( depthType === null || depthType === UnsignedIntType || depthType === UnsignedInt248Type ) {\n\n\t\t\t\tglInternalFormat = _gl.DEPTH24_STENCIL8;\n\n\t\t\t} else if ( depthType === FloatType ) {\n\n\t\t\t\tglInternalFormat = _gl.DEPTH32F_STENCIL8;\n\n\t\t\t} else if ( depthType === UnsignedShortType ) {\n\n\t\t\t\tglInternalFormat = _gl.DEPTH24_STENCIL8;\n\t\t\t\tconsole.warn( 'DepthTexture: 16 bit depth attachment is not supported with stencil. Using 24-bit attachment.' );\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tif ( depthType === null || depthType === UnsignedIntType || depthType === UnsignedInt248Type ) {\n\n\t\t\t\tglInternalFormat = _gl.DEPTH_COMPONENT24;\n\n\t\t\t} else if ( depthType === FloatType ) {\n\n\t\t\t\tglInternalFormat = _gl.DEPTH_COMPONENT32F;\n\n\t\t\t} else if ( depthType === UnsignedShortType ) {\n\n\t\t\t\tglInternalFormat = _gl.DEPTH_COMPONENT16;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn glInternalFormat;\n\n\t}\n\n\tfunction getMipLevels( texture, image ) {\n\n\t\tif ( textureNeedsGenerateMipmaps( texture ) === true || ( texture.isFramebufferTexture && texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter ) ) {\n\n\t\t\treturn Math.log2( Math.max( image.width, image.height ) ) + 1;\n\n\t\t} else if ( texture.mipmaps !== undefined && texture.mipmaps.length > 0 ) {\n\n\t\t\t// user-defined mipmaps\n\n\t\t\treturn texture.mipmaps.length;\n\n\t\t} else if ( texture.isCompressedTexture && Array.isArray( texture.image ) ) {\n\n\t\t\treturn image.mipmaps.length;\n\n\t\t} else {\n\n\t\t\t// texture without mipmaps (only base level)\n\n\t\t\treturn 1;\n\n\t\t}\n\n\t}\n\n\t//\n\n\tfunction onTextureDispose( event ) {\n\n\t\tconst texture = event.target;\n\n\t\ttexture.removeEventListener( 'dispose', onTextureDispose );\n\n\t\tdeallocateTexture( texture );\n\n\t\tif ( texture.isVideoTexture ) {\n\n\t\t\t_videoTextures.delete( texture );\n\n\t\t}\n\n\t}\n\n\tfunction onRenderTargetDispose( event ) {\n\n\t\tconst renderTarget = event.target;\n\n\t\trenderTarget.removeEventListener( 'dispose', onRenderTargetDispose );\n\n\t\tdeallocateRenderTarget( renderTarget );\n\n\t}\n\n\t//\n\n\tfunction deallocateTexture( texture ) {\n\n\t\tconst textureProperties = properties.get( texture );\n\n\t\tif ( textureProperties.__webglInit === undefined ) return;\n\n\t\t// check if it's necessary to remove the WebGLTexture object\n\n\t\tconst source = texture.source;\n\t\tconst webglTextures = _sources.get( source );\n\n\t\tif ( webglTextures ) {\n\n\t\t\tconst webglTexture = webglTextures[ textureProperties.__cacheKey ];\n\t\t\twebglTexture.usedTimes --;\n\n\t\t\t// the WebGLTexture object is not used anymore, remove it\n\n\t\t\tif ( webglTexture.usedTimes === 0 ) {\n\n\t\t\t\tdeleteTexture( texture );\n\n\t\t\t}\n\n\t\t\t// remove the weak map entry if no WebGLTexture uses the source anymore\n\n\t\t\tif ( Object.keys( webglTextures ).length === 0 ) {\n\n\t\t\t\t_sources.delete( source );\n\n\t\t\t}\n\n\t\t}\n\n\t\tproperties.remove( texture );\n\n\t}\n\n\tfunction deleteTexture( texture ) {\n\n\t\tconst textureProperties = properties.get( texture );\n\t\t_gl.deleteTexture( textureProperties.__webglTexture );\n\n\t\tconst source = texture.source;\n\t\tconst webglTextures = _sources.get( source );\n\t\tdelete webglTextures[ textureProperties.__cacheKey ];\n\n\t\tinfo.memory.textures --;\n\n\t}\n\n\tfunction deallocateRenderTarget( renderTarget ) {\n\n\t\tconst renderTargetProperties = properties.get( renderTarget );\n\n\t\tif ( renderTarget.depthTexture ) {\n\n\t\t\trenderTarget.depthTexture.dispose();\n\n\t\t}\n\n\t\tif ( renderTarget.isWebGLCubeRenderTarget ) {\n\n\t\t\tfor ( let i = 0; i < 6; i ++ ) {\n\n\t\t\t\tif ( Array.isArray( renderTargetProperties.__webglFramebuffer[ i ] ) ) {\n\n\t\t\t\t\tfor ( let level = 0; level < renderTargetProperties.__webglFramebuffer[ i ].length; level ++ ) _gl.deleteFramebuffer( renderTargetProperties.__webglFramebuffer[ i ][ level ] );\n\n\t\t\t\t} else {\n\n\t\t\t\t\t_gl.deleteFramebuffer( renderTargetProperties.__webglFramebuffer[ i ] );\n\n\t\t\t\t}\n\n\t\t\t\tif ( renderTargetProperties.__webglDepthbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglDepthbuffer[ i ] );\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tif ( Array.isArray( renderTargetProperties.__webglFramebuffer ) ) {\n\n\t\t\t\tfor ( let level = 0; level < renderTargetProperties.__webglFramebuffer.length; level ++ ) _gl.deleteFramebuffer( renderTargetProperties.__webglFramebuffer[ level ] );\n\n\t\t\t} else {\n\n\t\t\t\t_gl.deleteFramebuffer( renderTargetProperties.__webglFramebuffer );\n\n\t\t\t}\n\n\t\t\tif ( renderTargetProperties.__webglDepthbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglDepthbuffer );\n\t\t\tif ( renderTargetProperties.__webglMultisampledFramebuffer ) _gl.deleteFramebuffer( renderTargetProperties.__webglMultisampledFramebuffer );\n\n\t\t\tif ( renderTargetProperties.__webglColorRenderbuffer ) {\n\n\t\t\t\tfor ( let i = 0; i < renderTargetProperties.__webglColorRenderbuffer.length; i ++ ) {\n\n\t\t\t\t\tif ( renderTargetProperties.__webglColorRenderbuffer[ i ] ) _gl.deleteRenderbuffer( renderTargetProperties.__webglColorRenderbuffer[ i ] );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tif ( renderTargetProperties.__webglDepthRenderbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglDepthRenderbuffer );\n\n\t\t}\n\n\t\tconst textures = renderTarget.textures;\n\n\t\tfor ( let i = 0, il = textures.length; i < il; i ++ ) {\n\n\t\t\tconst attachmentProperties = properties.get( textures[ i ] );\n\n\t\t\tif ( attachmentProperties.__webglTexture ) {\n\n\t\t\t\t_gl.deleteTexture( attachmentProperties.__webglTexture );\n\n\t\t\t\tinfo.memory.textures --;\n\n\t\t\t}\n\n\t\t\tproperties.remove( textures[ i ] );\n\n\t\t}\n\n\t\tproperties.remove( renderTarget );\n\n\t}\n\n\t//\n\n\tlet textureUnits = 0;\n\n\tfunction resetTextureUnits() {\n\n\t\ttextureUnits = 0;\n\n\t}\n\n\tfunction allocateTextureUnit() {\n\n\t\tconst textureUnit = textureUnits;\n\n\t\tif ( textureUnit >= capabilities.maxTextures ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLTextures: Trying to use ' + textureUnit + ' texture units while this GPU supports only ' + capabilities.maxTextures );\n\n\t\t}\n\n\t\ttextureUnits += 1;\n\n\t\treturn textureUnit;\n\n\t}\n\n\tfunction getTextureCacheKey( texture ) {\n\n\t\tconst array = [];\n\n\t\tarray.push( texture.wrapS );\n\t\tarray.push( texture.wrapT );\n\t\tarray.push( texture.wrapR || 0 );\n\t\tarray.push( texture.magFilter );\n\t\tarray.push( texture.minFilter );\n\t\tarray.push( texture.anisotropy );\n\t\tarray.push( texture.internalFormat );\n\t\tarray.push( texture.format );\n\t\tarray.push( texture.type );\n\t\tarray.push( texture.generateMipmaps );\n\t\tarray.push( texture.premultiplyAlpha );\n\t\tarray.push( texture.flipY );\n\t\tarray.push( texture.unpackAlignment );\n\t\tarray.push( texture.colorSpace );\n\n\t\treturn array.join();\n\n\t}\n\n\t//\n\n\tfunction setTexture2D( texture, slot ) {\n\n\t\tconst textureProperties = properties.get( texture );\n\n\t\tif ( texture.isVideoTexture ) updateVideoTexture( texture );\n\n\t\tif ( texture.isRenderTargetTexture === false && texture.version > 0 && textureProperties.__version !== texture.version ) {\n\n\t\t\tconst image = texture.image;\n\n\t\t\tif ( image === null ) {\n\n\t\t\t\tconsole.warn( 'THREE.WebGLRenderer: Texture marked for update but no image data found.' );\n\n\t\t\t} else if ( image.complete === false ) {\n\n\t\t\t\tconsole.warn( 'THREE.WebGLRenderer: Texture marked for update but image is incomplete' );\n\n\t\t\t} else {\n\n\t\t\t\tuploadTexture( textureProperties, texture, slot );\n\t\t\t\treturn;\n\n\t\t\t}\n\n\t\t}\n\n\t\tstate.bindTexture( _gl.TEXTURE_2D, textureProperties.__webglTexture, _gl.TEXTURE0 + slot );\n\n\t}\n\n\tfunction setTexture2DArray( texture, slot ) {\n\n\t\tconst textureProperties = properties.get( texture );\n\n\t\tif ( texture.version > 0 && textureProperties.__version !== texture.version ) {\n\n\t\t\tuploadTexture( textureProperties, texture, slot );\n\t\t\treturn;\n\n\t\t}\n\n\t\tstate.bindTexture( _gl.TEXTURE_2D_ARRAY, textureProperties.__webglTexture, _gl.TEXTURE0 + slot );\n\n\t}\n\n\tfunction setTexture3D( texture, slot ) {\n\n\t\tconst textureProperties = properties.get( texture );\n\n\t\tif ( texture.version > 0 && textureProperties.__version !== texture.version ) {\n\n\t\t\tuploadTexture( textureProperties, texture, slot );\n\t\t\treturn;\n\n\t\t}\n\n\t\tstate.bindTexture( _gl.TEXTURE_3D, textureProperties.__webglTexture, _gl.TEXTURE0 + slot );\n\n\t}\n\n\tfunction setTextureCube( texture, slot ) {\n\n\t\tconst textureProperties = properties.get( texture );\n\n\t\tif ( texture.version > 0 && textureProperties.__version !== texture.version ) {\n\n\t\t\tuploadCubeTexture( textureProperties, texture, slot );\n\t\t\treturn;\n\n\t\t}\n\n\t\tstate.bindTexture( _gl.TEXTURE_CUBE_MAP, textureProperties.__webglTexture, _gl.TEXTURE0 + slot );\n\n\t}\n\n\tconst wrappingToGL = {\n\t\t[ RepeatWrapping ]: _gl.REPEAT,\n\t\t[ ClampToEdgeWrapping ]: _gl.CLAMP_TO_EDGE,\n\t\t[ MirroredRepeatWrapping ]: _gl.MIRRORED_REPEAT\n\t};\n\n\tconst filterToGL = {\n\t\t[ NearestFilter ]: _gl.NEAREST,\n\t\t[ NearestMipmapNearestFilter ]: _gl.NEAREST_MIPMAP_NEAREST,\n\t\t[ NearestMipmapLinearFilter ]: _gl.NEAREST_MIPMAP_LINEAR,\n\n\t\t[ LinearFilter ]: _gl.LINEAR,\n\t\t[ LinearMipmapNearestFilter ]: _gl.LINEAR_MIPMAP_NEAREST,\n\t\t[ LinearMipmapLinearFilter ]: _gl.LINEAR_MIPMAP_LINEAR\n\t};\n\n\tconst compareToGL = {\n\t\t[ NeverCompare ]: _gl.NEVER,\n\t\t[ AlwaysCompare ]: _gl.ALWAYS,\n\t\t[ LessCompare ]: _gl.LESS,\n\t\t[ LessEqualCompare ]: _gl.LEQUAL,\n\t\t[ EqualCompare ]: _gl.EQUAL,\n\t\t[ GreaterEqualCompare ]: _gl.GEQUAL,\n\t\t[ GreaterCompare ]: _gl.GREATER,\n\t\t[ NotEqualCompare ]: _gl.NOTEQUAL\n\t};\n\n\tfunction setTextureParameters( textureType, texture ) {\n\n\t\tif ( texture.type === FloatType && extensions.has( 'OES_texture_float_linear' ) === false &&\n\t\t\t( texture.magFilter === LinearFilter || texture.magFilter === LinearMipmapNearestFilter || texture.magFilter === NearestMipmapLinearFilter || texture.magFilter === LinearMipmapLinearFilter ||\n\t\t\ttexture.minFilter === LinearFilter || texture.minFilter === LinearMipmapNearestFilter || texture.minFilter === NearestMipmapLinearFilter || texture.minFilter === LinearMipmapLinearFilter ) ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: Unable to use linear filtering with floating point textures. OES_texture_float_linear not supported on this device.' );\n\n\t\t}\n\n\t\t_gl.texParameteri( textureType, _gl.TEXTURE_WRAP_S, wrappingToGL[ texture.wrapS ] );\n\t\t_gl.texParameteri( textureType, _gl.TEXTURE_WRAP_T, wrappingToGL[ texture.wrapT ] );\n\n\t\tif ( textureType === _gl.TEXTURE_3D || textureType === _gl.TEXTURE_2D_ARRAY ) {\n\n\t\t\t_gl.texParameteri( textureType, _gl.TEXTURE_WRAP_R, wrappingToGL[ texture.wrapR ] );\n\n\t\t}\n\n\t\t_gl.texParameteri( textureType, _gl.TEXTURE_MAG_FILTER, filterToGL[ texture.magFilter ] );\n\t\t_gl.texParameteri( textureType, _gl.TEXTURE_MIN_FILTER, filterToGL[ texture.minFilter ] );\n\n\t\tif ( texture.compareFunction ) {\n\n\t\t\t_gl.texParameteri( textureType, _gl.TEXTURE_COMPARE_MODE, _gl.COMPARE_REF_TO_TEXTURE );\n\t\t\t_gl.texParameteri( textureType, _gl.TEXTURE_COMPARE_FUNC, compareToGL[ texture.compareFunction ] );\n\n\t\t}\n\n\t\tif ( extensions.has( 'EXT_texture_filter_anisotropic' ) === true ) {\n\n\t\t\tif ( texture.magFilter === NearestFilter ) return;\n\t\t\tif ( texture.minFilter !== NearestMipmapLinearFilter && texture.minFilter !== LinearMipmapLinearFilter ) return;\n\t\t\tif ( texture.type === FloatType && extensions.has( 'OES_texture_float_linear' ) === false ) return; // verify extension\n\n\t\t\tif ( texture.anisotropy > 1 || properties.get( texture ).__currentAnisotropy ) {\n\n\t\t\t\tconst extension = extensions.get( 'EXT_texture_filter_anisotropic' );\n\t\t\t\t_gl.texParameterf( textureType, extension.TEXTURE_MAX_ANISOTROPY_EXT, Math.min( texture.anisotropy, capabilities.getMaxAnisotropy() ) );\n\t\t\t\tproperties.get( texture ).__currentAnisotropy = texture.anisotropy;\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\tfunction initTexture( textureProperties, texture ) {\n\n\t\tlet forceUpload = false;\n\n\t\tif ( textureProperties.__webglInit === undefined ) {\n\n\t\t\ttextureProperties.__webglInit = true;\n\n\t\t\ttexture.addEventListener( 'dispose', onTextureDispose );\n\n\t\t}\n\n\t\t// create Source <-> WebGLTextures mapping if necessary\n\n\t\tconst source = texture.source;\n\t\tlet webglTextures = _sources.get( source );\n\n\t\tif ( webglTextures === undefined ) {\n\n\t\t\twebglTextures = {};\n\t\t\t_sources.set( source, webglTextures );\n\n\t\t}\n\n\t\t// check if there is already a WebGLTexture object for the given texture parameters\n\n\t\tconst textureCacheKey = getTextureCacheKey( texture );\n\n\t\tif ( textureCacheKey !== textureProperties.__cacheKey ) {\n\n\t\t\t// if not, create a new instance of WebGLTexture\n\n\t\t\tif ( webglTextures[ textureCacheKey ] === undefined ) {\n\n\t\t\t\t// create new entry\n\n\t\t\t\twebglTextures[ textureCacheKey ] = {\n\t\t\t\t\ttexture: _gl.createTexture(),\n\t\t\t\t\tusedTimes: 0\n\t\t\t\t};\n\n\t\t\t\tinfo.memory.textures ++;\n\n\t\t\t\t// when a new instance of WebGLTexture was created, a texture upload is required\n\t\t\t\t// even if the image contents are identical\n\n\t\t\t\tforceUpload = true;\n\n\t\t\t}\n\n\t\t\twebglTextures[ textureCacheKey ].usedTimes ++;\n\n\t\t\t// every time the texture cache key changes, it's necessary to check if an instance of\n\t\t\t// WebGLTexture can be deleted in order to avoid a memory leak.\n\n\t\t\tconst webglTexture = webglTextures[ textureProperties.__cacheKey ];\n\n\t\t\tif ( webglTexture !== undefined ) {\n\n\t\t\t\twebglTextures[ textureProperties.__cacheKey ].usedTimes --;\n\n\t\t\t\tif ( webglTexture.usedTimes === 0 ) {\n\n\t\t\t\t\tdeleteTexture( texture );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// store references to cache key and WebGLTexture object\n\n\t\t\ttextureProperties.__cacheKey = textureCacheKey;\n\t\t\ttextureProperties.__webglTexture = webglTextures[ textureCacheKey ].texture;\n\n\t\t}\n\n\t\treturn forceUpload;\n\n\t}\n\n\tfunction uploadTexture( textureProperties, texture, slot ) {\n\n\t\tlet textureType = _gl.TEXTURE_2D;\n\n\t\tif ( texture.isDataArrayTexture || texture.isCompressedArrayTexture ) textureType = _gl.TEXTURE_2D_ARRAY;\n\t\tif ( texture.isData3DTexture ) textureType = _gl.TEXTURE_3D;\n\n\t\tconst forceUpload = initTexture( textureProperties, texture );\n\t\tconst source = texture.source;\n\n\t\tstate.bindTexture( textureType, textureProperties.__webglTexture, _gl.TEXTURE0 + slot );\n\n\t\tconst sourceProperties = properties.get( source );\n\n\t\tif ( source.version !== sourceProperties.__version || forceUpload === true ) {\n\n\t\t\tstate.activeTexture( _gl.TEXTURE0 + slot );\n\n\t\t\tconst workingPrimaries = ColorManagement.getPrimaries( ColorManagement.workingColorSpace );\n\t\t\tconst texturePrimaries = texture.colorSpace === NoColorSpace ? null : ColorManagement.getPrimaries( texture.colorSpace );\n\t\t\tconst unpackConversion = texture.colorSpace === NoColorSpace || workingPrimaries === texturePrimaries ? _gl.NONE : _gl.BROWSER_DEFAULT_WEBGL;\n\n\t\t\t_gl.pixelStorei( _gl.UNPACK_FLIP_Y_WEBGL, texture.flipY );\n\t\t\t_gl.pixelStorei( _gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, texture.premultiplyAlpha );\n\t\t\t_gl.pixelStorei( _gl.UNPACK_ALIGNMENT, texture.unpackAlignment );\n\t\t\t_gl.pixelStorei( _gl.UNPACK_COLORSPACE_CONVERSION_WEBGL, unpackConversion );\n\n\t\t\tlet image = resizeImage( texture.image, false, capabilities.maxTextureSize );\n\t\t\timage = verifyColorSpace( texture, image );\n\n\t\t\tconst glFormat = utils.convert( texture.format, texture.colorSpace );\n\n\t\t\tconst glType = utils.convert( texture.type );\n\t\t\tlet glInternalFormat = getInternalFormat( texture.internalFormat, glFormat, glType, texture.colorSpace, texture.isVideoTexture );\n\n\t\t\tsetTextureParameters( textureType, texture );\n\n\t\t\tlet mipmap;\n\t\t\tconst mipmaps = texture.mipmaps;\n\n\t\t\tconst useTexStorage = ( texture.isVideoTexture !== true );\n\t\t\tconst allocateMemory = ( sourceProperties.__version === undefined ) || ( forceUpload === true );\n\t\t\tconst dataReady = source.dataReady;\n\t\t\tconst levels = getMipLevels( texture, image );\n\n\t\t\tif ( texture.isDepthTexture ) {\n\n\t\t\t\tglInternalFormat = getInternalDepthFormat( texture.format === DepthStencilFormat, texture.type );\n\n\t\t\t\t//\n\n\t\t\t\tif ( allocateMemory ) {\n\n\t\t\t\t\tif ( useTexStorage ) {\n\n\t\t\t\t\t\tstate.texStorage2D( _gl.TEXTURE_2D, 1, glInternalFormat, image.width, image.height );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tstate.texImage2D( _gl.TEXTURE_2D, 0, glInternalFormat, image.width, image.height, 0, glFormat, glType, null );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t} else if ( texture.isDataTexture ) {\n\n\t\t\t\t// use manually created mipmaps if available\n\t\t\t\t// if there are no manual mipmaps\n\t\t\t\t// set 0 level mipmap and then use GL to generate other mipmap levels\n\n\t\t\t\tif ( mipmaps.length > 0 ) {\n\n\t\t\t\t\tif ( useTexStorage && allocateMemory ) {\n\n\t\t\t\t\t\tstate.texStorage2D( _gl.TEXTURE_2D, levels, glInternalFormat, mipmaps[ 0 ].width, mipmaps[ 0 ].height );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tfor ( let i = 0, il = mipmaps.length; i < il; i ++ ) {\n\n\t\t\t\t\t\tmipmap = mipmaps[ i ];\n\n\t\t\t\t\t\tif ( useTexStorage ) {\n\n\t\t\t\t\t\t\tif ( dataReady ) {\n\n\t\t\t\t\t\t\t\tstate.texSubImage2D( _gl.TEXTURE_2D, i, 0, 0, mipmap.width, mipmap.height, glFormat, glType, mipmap.data );\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\tstate.texImage2D( _gl.TEXTURE_2D, i, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t\ttexture.generateMipmaps = false;\n\n\t\t\t\t} else {\n\n\t\t\t\t\tif ( useTexStorage ) {\n\n\t\t\t\t\t\tif ( allocateMemory ) {\n\n\t\t\t\t\t\t\tstate.texStorage2D( _gl.TEXTURE_2D, levels, glInternalFormat, image.width, image.height );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tif ( dataReady ) {\n\n\t\t\t\t\t\t\tstate.texSubImage2D( _gl.TEXTURE_2D, 0, 0, 0, image.width, image.height, glFormat, glType, image.data );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tstate.texImage2D( _gl.TEXTURE_2D, 0, glInternalFormat, image.width, image.height, 0, glFormat, glType, image.data );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t} else if ( texture.isCompressedTexture ) {\n\n\t\t\t\tif ( texture.isCompressedArrayTexture ) {\n\n\t\t\t\t\tif ( useTexStorage && allocateMemory ) {\n\n\t\t\t\t\t\tstate.texStorage3D( _gl.TEXTURE_2D_ARRAY, levels, glInternalFormat, mipmaps[ 0 ].width, mipmaps[ 0 ].height, image.depth );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tfor ( let i = 0, il = mipmaps.length; i < il; i ++ ) {\n\n\t\t\t\t\t\tmipmap = mipmaps[ i ];\n\n\t\t\t\t\t\tif ( texture.format !== RGBAFormat ) {\n\n\t\t\t\t\t\t\tif ( glFormat !== null ) {\n\n\t\t\t\t\t\t\t\tif ( useTexStorage ) {\n\n\t\t\t\t\t\t\t\t\tif ( dataReady ) {\n\n\t\t\t\t\t\t\t\t\t\tif ( texture.layerUpdates.size > 0 ) {\n\n\t\t\t\t\t\t\t\t\t\t\tfor ( const layerIndex of texture.layerUpdates ) {\n\n\t\t\t\t\t\t\t\t\t\t\t\tconst layerSize = mipmap.width * mipmap.height;\n\t\t\t\t\t\t\t\t\t\t\t\tstate.compressedTexSubImage3D( _gl.TEXTURE_2D_ARRAY, i, 0, 0, layerIndex, mipmap.width, mipmap.height, 1, glFormat, mipmap.data.slice( layerSize * layerIndex, layerSize * ( layerIndex + 1 ) ), 0, 0 );\n\n\t\t\t\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t\t\t\ttexture.clearLayerUpdates();\n\n\t\t\t\t\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t\t\t\t\tstate.compressedTexSubImage3D( _gl.TEXTURE_2D_ARRAY, i, 0, 0, 0, mipmap.width, mipmap.height, image.depth, glFormat, mipmap.data, 0, 0 );\n\n\t\t\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t\t\tstate.compressedTexImage3D( _gl.TEXTURE_2D_ARRAY, i, glInternalFormat, mipmap.width, mipmap.height, image.depth, 0, mipmap.data, 0, 0 );\n\n\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t\tconsole.warn( 'THREE.WebGLRenderer: Attempt to load unsupported compressed texture format in .uploadTexture()' );\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\tif ( useTexStorage ) {\n\n\t\t\t\t\t\t\t\tif ( dataReady ) {\n\n\t\t\t\t\t\t\t\t\tstate.texSubImage3D( _gl.TEXTURE_2D_ARRAY, i, 0, 0, 0, mipmap.width, mipmap.height, image.depth, glFormat, glType, mipmap.data );\n\n\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t\tstate.texImage3D( _gl.TEXTURE_2D_ARRAY, i, glInternalFormat, mipmap.width, mipmap.height, image.depth, 0, glFormat, glType, mipmap.data );\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\tif ( useTexStorage && allocateMemory ) {\n\n\t\t\t\t\t\tstate.texStorage2D( _gl.TEXTURE_2D, levels, glInternalFormat, mipmaps[ 0 ].width, mipmaps[ 0 ].height );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tfor ( let i = 0, il = mipmaps.length; i < il; i ++ ) {\n\n\t\t\t\t\t\tmipmap = mipmaps[ i ];\n\n\t\t\t\t\t\tif ( texture.format !== RGBAFormat ) {\n\n\t\t\t\t\t\t\tif ( glFormat !== null ) {\n\n\t\t\t\t\t\t\t\tif ( useTexStorage ) {\n\n\t\t\t\t\t\t\t\t\tif ( dataReady ) {\n\n\t\t\t\t\t\t\t\t\t\tstate.compressedTexSubImage2D( _gl.TEXTURE_2D, i, 0, 0, mipmap.width, mipmap.height, glFormat, mipmap.data );\n\n\t\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t\t\tstate.compressedTexImage2D( _gl.TEXTURE_2D, i, glInternalFormat, mipmap.width, mipmap.height, 0, mipmap.data );\n\n\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t\tconsole.warn( 'THREE.WebGLRenderer: Attempt to load unsupported compressed texture format in .uploadTexture()' );\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\tif ( useTexStorage ) {\n\n\t\t\t\t\t\t\t\tif ( dataReady ) {\n\n\t\t\t\t\t\t\t\t\tstate.texSubImage2D( _gl.TEXTURE_2D, i, 0, 0, mipmap.width, mipmap.height, glFormat, glType, mipmap.data );\n\n\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t\tstate.texImage2D( _gl.TEXTURE_2D, i, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data );\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t} else if ( texture.isDataArrayTexture ) {\n\n\t\t\t\tif ( useTexStorage ) {\n\n\t\t\t\t\tif ( allocateMemory ) {\n\n\t\t\t\t\t\tstate.texStorage3D( _gl.TEXTURE_2D_ARRAY, levels, glInternalFormat, image.width, image.height, image.depth );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( dataReady ) {\n\n\t\t\t\t\t\tif ( texture.layerUpdates.size > 0 ) {\n\n\t\t\t\t\t\t\t// When type is GL_UNSIGNED_BYTE, each of these bytes is\n\t\t\t\t\t\t\t// interpreted as one color component, depending on format. When\n\t\t\t\t\t\t\t// type is one of GL_UNSIGNED_SHORT_5_6_5,\n\t\t\t\t\t\t\t// GL_UNSIGNED_SHORT_4_4_4_4, GL_UNSIGNED_SHORT_5_5_5_1, each\n\t\t\t\t\t\t\t// unsigned value is interpreted as containing all the components\n\t\t\t\t\t\t\t// for a single pixel, with the color components arranged\n\t\t\t\t\t\t\t// according to format.\n\t\t\t\t\t\t\t//\n\t\t\t\t\t\t\t// See https://registry.khronos.org/OpenGL-Refpages/es1.1/xhtml/glTexImage2D.xml\n\t\t\t\t\t\t\tlet texelSize;\n\t\t\t\t\t\t\tswitch ( glType ) {\n\n\t\t\t\t\t\t\t\tcase _gl.UNSIGNED_BYTE:\n\t\t\t\t\t\t\t\t\tswitch ( glFormat ) {\n\n\t\t\t\t\t\t\t\t\t\tcase _gl.ALPHA:\n\t\t\t\t\t\t\t\t\t\t\ttexelSize = 1;\n\t\t\t\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t\t\t\tcase _gl.LUMINANCE:\n\t\t\t\t\t\t\t\t\t\t\ttexelSize = 1;\n\t\t\t\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t\t\t\tcase _gl.LUMINANCE_ALPHA:\n\t\t\t\t\t\t\t\t\t\t\ttexelSize = 2;\n\t\t\t\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t\t\t\tcase _gl.RGB:\n\t\t\t\t\t\t\t\t\t\t\ttexelSize = 3;\n\t\t\t\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t\t\t\tcase _gl.RGBA:\n\t\t\t\t\t\t\t\t\t\t\ttexelSize = 4;\n\t\t\t\t\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\t\t\t\t\tdefault:\n\t\t\t\t\t\t\t\t\t\t\tthrow new Error( `Unknown texel size for format ${glFormat}.` );\n\n\t\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\t\t\tcase _gl.UNSIGNED_SHORT_4_4_4_4:\n\t\t\t\t\t\t\t\tcase _gl.UNSIGNED_SHORT_5_5_5_1:\n\t\t\t\t\t\t\t\tcase _gl.UNSIGNED_SHORT_5_6_5:\n\t\t\t\t\t\t\t\t\ttexelSize = 1;\n\t\t\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\t\t\tdefault:\n\t\t\t\t\t\t\t\t\tthrow new Error( `Unknown texel size for type ${glType}.` );\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\tconst layerSize = image.width * image.height * texelSize;\n\n\t\t\t\t\t\t\tfor ( const layerIndex of texture.layerUpdates ) {\n\n\t\t\t\t\t\t\t\tstate.texSubImage3D( _gl.TEXTURE_2D_ARRAY, 0, 0, 0, layerIndex, image.width, image.height, 1, glFormat, glType, image.data.slice( layerSize * layerIndex, layerSize * ( layerIndex + 1 ) ) );\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\ttexture.clearLayerUpdates();\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\tstate.texSubImage3D( _gl.TEXTURE_2D_ARRAY, 0, 0, 0, 0, image.width, image.height, image.depth, glFormat, glType, image.data );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\tstate.texImage3D( _gl.TEXTURE_2D_ARRAY, 0, glInternalFormat, image.width, image.height, image.depth, 0, glFormat, glType, image.data );\n\n\t\t\t\t}\n\n\t\t\t} else if ( texture.isData3DTexture ) {\n\n\t\t\t\tif ( useTexStorage ) {\n\n\t\t\t\t\tif ( allocateMemory ) {\n\n\t\t\t\t\t\tstate.texStorage3D( _gl.TEXTURE_3D, levels, glInternalFormat, image.width, image.height, image.depth );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( dataReady ) {\n\n\t\t\t\t\t\tstate.texSubImage3D( _gl.TEXTURE_3D, 0, 0, 0, 0, image.width, image.height, image.depth, glFormat, glType, image.data );\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\tstate.texImage3D( _gl.TEXTURE_3D, 0, glInternalFormat, image.width, image.height, image.depth, 0, glFormat, glType, image.data );\n\n\t\t\t\t}\n\n\t\t\t} else if ( texture.isFramebufferTexture ) {\n\n\t\t\t\tif ( allocateMemory ) {\n\n\t\t\t\t\tif ( useTexStorage ) {\n\n\t\t\t\t\t\tstate.texStorage2D( _gl.TEXTURE_2D, levels, glInternalFormat, image.width, image.height );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tlet width = image.width, height = image.height;\n\n\t\t\t\t\t\tfor ( let i = 0; i < levels; i ++ ) {\n\n\t\t\t\t\t\t\tstate.texImage2D( _gl.TEXTURE_2D, i, glInternalFormat, width, height, 0, glFormat, glType, null );\n\n\t\t\t\t\t\t\twidth >>= 1;\n\t\t\t\t\t\t\theight >>= 1;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\t// regular Texture (image, video, canvas)\n\n\t\t\t\t// use manually created mipmaps if available\n\t\t\t\t// if there are no manual mipmaps\n\t\t\t\t// set 0 level mipmap and then use GL to generate other mipmap levels\n\n\t\t\t\tif ( mipmaps.length > 0 ) {\n\n\t\t\t\t\tif ( useTexStorage && allocateMemory ) {\n\n\t\t\t\t\t\tconst dimensions = getDimensions( mipmaps[ 0 ] );\n\n\t\t\t\t\t\tstate.texStorage2D( _gl.TEXTURE_2D, levels, glInternalFormat, dimensions.width, dimensions.height );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tfor ( let i = 0, il = mipmaps.length; i < il; i ++ ) {\n\n\t\t\t\t\t\tmipmap = mipmaps[ i ];\n\n\t\t\t\t\t\tif ( useTexStorage ) {\n\n\t\t\t\t\t\t\tif ( dataReady ) {\n\n\t\t\t\t\t\t\t\tstate.texSubImage2D( _gl.TEXTURE_2D, i, 0, 0, glFormat, glType, mipmap );\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\tstate.texImage2D( _gl.TEXTURE_2D, i, glInternalFormat, glFormat, glType, mipmap );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t\ttexture.generateMipmaps = false;\n\n\t\t\t\t} else {\n\n\t\t\t\t\tif ( useTexStorage ) {\n\n\t\t\t\t\t\tif ( allocateMemory ) {\n\n\t\t\t\t\t\t\tconst dimensions = getDimensions( image );\n\n\t\t\t\t\t\t\tstate.texStorage2D( _gl.TEXTURE_2D, levels, glInternalFormat, dimensions.width, dimensions.height );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tif ( dataReady ) {\n\n\t\t\t\t\t\t\tstate.texSubImage2D( _gl.TEXTURE_2D, 0, 0, 0, glFormat, glType, image );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tstate.texImage2D( _gl.TEXTURE_2D, 0, glInternalFormat, glFormat, glType, image );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tif ( textureNeedsGenerateMipmaps( texture ) ) {\n\n\t\t\t\tgenerateMipmap( textureType );\n\n\t\t\t}\n\n\t\t\tsourceProperties.__version = source.version;\n\n\t\t\tif ( texture.onUpdate ) texture.onUpdate( texture );\n\n\t\t}\n\n\t\ttextureProperties.__version = texture.version;\n\n\t}\n\n\tfunction uploadCubeTexture( textureProperties, texture, slot ) {\n\n\t\tif ( texture.image.length !== 6 ) return;\n\n\t\tconst forceUpload = initTexture( textureProperties, texture );\n\t\tconst source = texture.source;\n\n\t\tstate.bindTexture( _gl.TEXTURE_CUBE_MAP, textureProperties.__webglTexture, _gl.TEXTURE0 + slot );\n\n\t\tconst sourceProperties = properties.get( source );\n\n\t\tif ( source.version !== sourceProperties.__version || forceUpload === true ) {\n\n\t\t\tstate.activeTexture( _gl.TEXTURE0 + slot );\n\n\t\t\tconst workingPrimaries = ColorManagement.getPrimaries( ColorManagement.workingColorSpace );\n\t\t\tconst texturePrimaries = texture.colorSpace === NoColorSpace ? null : ColorManagement.getPrimaries( texture.colorSpace );\n\t\t\tconst unpackConversion = texture.colorSpace === NoColorSpace || workingPrimaries === texturePrimaries ? _gl.NONE : _gl.BROWSER_DEFAULT_WEBGL;\n\n\t\t\t_gl.pixelStorei( _gl.UNPACK_FLIP_Y_WEBGL, texture.flipY );\n\t\t\t_gl.pixelStorei( _gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, texture.premultiplyAlpha );\n\t\t\t_gl.pixelStorei( _gl.UNPACK_ALIGNMENT, texture.unpackAlignment );\n\t\t\t_gl.pixelStorei( _gl.UNPACK_COLORSPACE_CONVERSION_WEBGL, unpackConversion );\n\n\t\t\tconst isCompressed = ( texture.isCompressedTexture || texture.image[ 0 ].isCompressedTexture );\n\t\t\tconst isDataTexture = ( texture.image[ 0 ] && texture.image[ 0 ].isDataTexture );\n\n\t\t\tconst cubeImage = [];\n\n\t\t\tfor ( let i = 0; i < 6; i ++ ) {\n\n\t\t\t\tif ( ! isCompressed && ! isDataTexture ) {\n\n\t\t\t\t\tcubeImage[ i ] = resizeImage( texture.image[ i ], true, capabilities.maxCubemapSize );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tcubeImage[ i ] = isDataTexture ? texture.image[ i ].image : texture.image[ i ];\n\n\t\t\t\t}\n\n\t\t\t\tcubeImage[ i ] = verifyColorSpace( texture, cubeImage[ i ] );\n\n\t\t\t}\n\n\t\t\tconst image = cubeImage[ 0 ],\n\t\t\t\tglFormat = utils.convert( texture.format, texture.colorSpace ),\n\t\t\t\tglType = utils.convert( texture.type ),\n\t\t\t\tglInternalFormat = getInternalFormat( texture.internalFormat, glFormat, glType, texture.colorSpace );\n\n\t\t\tconst useTexStorage = ( texture.isVideoTexture !== true );\n\t\t\tconst allocateMemory = ( sourceProperties.__version === undefined ) || ( forceUpload === true );\n\t\t\tconst dataReady = source.dataReady;\n\t\t\tlet levels = getMipLevels( texture, image );\n\n\t\t\tsetTextureParameters( _gl.TEXTURE_CUBE_MAP, texture );\n\n\t\t\tlet mipmaps;\n\n\t\t\tif ( isCompressed ) {\n\n\t\t\t\tif ( useTexStorage && allocateMemory ) {\n\n\t\t\t\t\tstate.texStorage2D( _gl.TEXTURE_CUBE_MAP, levels, glInternalFormat, image.width, image.height );\n\n\t\t\t\t}\n\n\t\t\t\tfor ( let i = 0; i < 6; i ++ ) {\n\n\t\t\t\t\tmipmaps = cubeImage[ i ].mipmaps;\n\n\t\t\t\t\tfor ( let j = 0; j < mipmaps.length; j ++ ) {\n\n\t\t\t\t\t\tconst mipmap = mipmaps[ j ];\n\n\t\t\t\t\t\tif ( texture.format !== RGBAFormat ) {\n\n\t\t\t\t\t\t\tif ( glFormat !== null ) {\n\n\t\t\t\t\t\t\t\tif ( useTexStorage ) {\n\n\t\t\t\t\t\t\t\t\tif ( dataReady ) {\n\n\t\t\t\t\t\t\t\t\t\tstate.compressedTexSubImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j, 0, 0, mipmap.width, mipmap.height, glFormat, mipmap.data );\n\n\t\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t\t\tstate.compressedTexImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j, glInternalFormat, mipmap.width, mipmap.height, 0, mipmap.data );\n\n\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t\tconsole.warn( 'THREE.WebGLRenderer: Attempt to load unsupported compressed texture format in .setTextureCube()' );\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\tif ( useTexStorage ) {\n\n\t\t\t\t\t\t\t\tif ( dataReady ) {\n\n\t\t\t\t\t\t\t\t\tstate.texSubImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j, 0, 0, mipmap.width, mipmap.height, glFormat, glType, mipmap.data );\n\n\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t\tstate.texImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data );\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\tmipmaps = texture.mipmaps;\n\n\t\t\t\tif ( useTexStorage && allocateMemory ) {\n\n\t\t\t\t\t// TODO: Uniformly handle mipmap definitions\n\t\t\t\t\t// Normal textures and compressed cube textures define base level + mips with their mipmap array\n\t\t\t\t\t// Uncompressed cube textures use their mipmap array only for mips (no base level)\n\n\t\t\t\t\tif ( mipmaps.length > 0 ) levels ++;\n\n\t\t\t\t\tconst dimensions = getDimensions( cubeImage[ 0 ] );\n\n\t\t\t\t\tstate.texStorage2D( _gl.TEXTURE_CUBE_MAP, levels, glInternalFormat, dimensions.width, dimensions.height );\n\n\t\t\t\t}\n\n\t\t\t\tfor ( let i = 0; i < 6; i ++ ) {\n\n\t\t\t\t\tif ( isDataTexture ) {\n\n\t\t\t\t\t\tif ( useTexStorage ) {\n\n\t\t\t\t\t\t\tif ( dataReady ) {\n\n\t\t\t\t\t\t\t\tstate.texSubImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, 0, 0, cubeImage[ i ].width, cubeImage[ i ].height, glFormat, glType, cubeImage[ i ].data );\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\tstate.texImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, glInternalFormat, cubeImage[ i ].width, cubeImage[ i ].height, 0, glFormat, glType, cubeImage[ i ].data );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tfor ( let j = 0; j < mipmaps.length; j ++ ) {\n\n\t\t\t\t\t\t\tconst mipmap = mipmaps[ j ];\n\t\t\t\t\t\t\tconst mipmapImage = mipmap.image[ i ].image;\n\n\t\t\t\t\t\t\tif ( useTexStorage ) {\n\n\t\t\t\t\t\t\t\tif ( dataReady ) {\n\n\t\t\t\t\t\t\t\t\tstate.texSubImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j + 1, 0, 0, mipmapImage.width, mipmapImage.height, glFormat, glType, mipmapImage.data );\n\n\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t\tstate.texImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j + 1, glInternalFormat, mipmapImage.width, mipmapImage.height, 0, glFormat, glType, mipmapImage.data );\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tif ( useTexStorage ) {\n\n\t\t\t\t\t\t\tif ( dataReady ) {\n\n\t\t\t\t\t\t\t\tstate.texSubImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, 0, 0, glFormat, glType, cubeImage[ i ] );\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\tstate.texImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, glInternalFormat, glFormat, glType, cubeImage[ i ] );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tfor ( let j = 0; j < mipmaps.length; j ++ ) {\n\n\t\t\t\t\t\t\tconst mipmap = mipmaps[ j ];\n\n\t\t\t\t\t\t\tif ( useTexStorage ) {\n\n\t\t\t\t\t\t\t\tif ( dataReady ) {\n\n\t\t\t\t\t\t\t\t\tstate.texSubImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j + 1, 0, 0, glFormat, glType, mipmap.image[ i ] );\n\n\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t\tstate.texImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j + 1, glInternalFormat, glFormat, glType, mipmap.image[ i ] );\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tif ( textureNeedsGenerateMipmaps( texture ) ) {\n\n\t\t\t\t// We assume images for cube map have the same size.\n\t\t\t\tgenerateMipmap( _gl.TEXTURE_CUBE_MAP );\n\n\t\t\t}\n\n\t\t\tsourceProperties.__version = source.version;\n\n\t\t\tif ( texture.onUpdate ) texture.onUpdate( texture );\n\n\t\t}\n\n\t\ttextureProperties.__version = texture.version;\n\n\t}\n\n\t// Render targets\n\n\t// Setup storage for target texture and bind it to correct framebuffer\n\tfunction setupFrameBufferTexture( framebuffer, renderTarget, texture, attachment, textureTarget, level ) {\n\n\t\tconst glFormat = utils.convert( texture.format, texture.colorSpace );\n\t\tconst glType = utils.convert( texture.type );\n\t\tconst glInternalFormat = getInternalFormat( texture.internalFormat, glFormat, glType, texture.colorSpace );\n\t\tconst renderTargetProperties = properties.get( renderTarget );\n\n\t\tif ( ! renderTargetProperties.__hasExternalTextures ) {\n\n\t\t\tconst width = Math.max( 1, renderTarget.width >> level );\n\t\t\tconst height = Math.max( 1, renderTarget.height >> level );\n\n\t\t\tif ( textureTarget === _gl.TEXTURE_3D || textureTarget === _gl.TEXTURE_2D_ARRAY ) {\n\n\t\t\t\tstate.texImage3D( textureTarget, level, glInternalFormat, width, height, renderTarget.depth, 0, glFormat, glType, null );\n\n\t\t\t} else {\n\n\t\t\t\tstate.texImage2D( textureTarget, level, glInternalFormat, width, height, 0, glFormat, glType, null );\n\n\t\t\t}\n\n\t\t}\n\n\t\tstate.bindFramebuffer( _gl.FRAMEBUFFER, framebuffer );\n\n\t\tif ( useMultisampledRTT( renderTarget ) ) {\n\n\t\t\tmultisampledRTTExt.framebufferTexture2DMultisampleEXT( _gl.FRAMEBUFFER, attachment, textureTarget, properties.get( texture ).__webglTexture, 0, getRenderTargetSamples( renderTarget ) );\n\n\t\t} else if ( textureTarget === _gl.TEXTURE_2D || ( textureTarget >= _gl.TEXTURE_CUBE_MAP_POSITIVE_X && textureTarget <= _gl.TEXTURE_CUBE_MAP_NEGATIVE_Z ) ) { // see #24753\n\n\t\t\t_gl.framebufferTexture2D( _gl.FRAMEBUFFER, attachment, textureTarget, properties.get( texture ).__webglTexture, level );\n\n\t\t}\n\n\t\tstate.bindFramebuffer( _gl.FRAMEBUFFER, null );\n\n\t}\n\n\t// Setup storage for internal depth/stencil buffers and bind to correct framebuffer\n\tfunction setupRenderBufferStorage( renderbuffer, renderTarget, isMultisample ) {\n\n\t\t_gl.bindRenderbuffer( _gl.RENDERBUFFER, renderbuffer );\n\n\t\tif ( renderTarget.depthBuffer ) {\n\n\t\t\t// retrieve the depth attachment types\n\t\t\tconst depthTexture = renderTarget.depthTexture;\n\t\t\tconst depthType = depthTexture && depthTexture.isDepthTexture ? depthTexture.type : null;\n\t\t\tconst glInternalFormat = getInternalDepthFormat( renderTarget.stencilBuffer, depthType );\n\t\t\tconst glAttachmentType = renderTarget.stencilBuffer ? _gl.DEPTH_STENCIL_ATTACHMENT : _gl.DEPTH_ATTACHMENT;\n\n\t\t\t// set up the attachment\n\t\t\tconst samples = getRenderTargetSamples( renderTarget );\n\t\t\tconst isUseMultisampledRTT = useMultisampledRTT( renderTarget );\n\t\t\tif ( isUseMultisampledRTT ) {\n\n\t\t\t\tmultisampledRTTExt.renderbufferStorageMultisampleEXT( _gl.RENDERBUFFER, samples, glInternalFormat, renderTarget.width, renderTarget.height );\n\n\t\t\t} else if ( isMultisample ) {\n\n\t\t\t\t_gl.renderbufferStorageMultisample( _gl.RENDERBUFFER, samples, glInternalFormat, renderTarget.width, renderTarget.height );\n\n\t\t\t} else {\n\n\t\t\t\t_gl.renderbufferStorage( _gl.RENDERBUFFER, glInternalFormat, renderTarget.width, renderTarget.height );\n\n\t\t\t}\n\n\t\t\t_gl.framebufferRenderbuffer( _gl.FRAMEBUFFER, glAttachmentType, _gl.RENDERBUFFER, renderbuffer );\n\n\t\t} else {\n\n\t\t\tconst textures = renderTarget.textures;\n\n\t\t\tfor ( let i = 0; i < textures.length; i ++ ) {\n\n\t\t\t\tconst texture = textures[ i ];\n\n\t\t\t\tconst glFormat = utils.convert( texture.format, texture.colorSpace );\n\t\t\t\tconst glType = utils.convert( texture.type );\n\t\t\t\tconst glInternalFormat = getInternalFormat( texture.internalFormat, glFormat, glType, texture.colorSpace );\n\t\t\t\tconst samples = getRenderTargetSamples( renderTarget );\n\n\t\t\t\tif ( isMultisample && useMultisampledRTT( renderTarget ) === false ) {\n\n\t\t\t\t\t_gl.renderbufferStorageMultisample( _gl.RENDERBUFFER, samples, glInternalFormat, renderTarget.width, renderTarget.height );\n\n\t\t\t\t} else if ( useMultisampledRTT( renderTarget ) ) {\n\n\t\t\t\t\tmultisampledRTTExt.renderbufferStorageMultisampleEXT( _gl.RENDERBUFFER, samples, glInternalFormat, renderTarget.width, renderTarget.height );\n\n\t\t\t\t} else {\n\n\t\t\t\t\t_gl.renderbufferStorage( _gl.RENDERBUFFER, glInternalFormat, renderTarget.width, renderTarget.height );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\t_gl.bindRenderbuffer( _gl.RENDERBUFFER, null );\n\n\t}\n\n\t// Setup resources for a Depth Texture for a FBO (needs an extension)\n\tfunction setupDepthTexture( framebuffer, renderTarget ) {\n\n\t\tconst isCube = ( renderTarget && renderTarget.isWebGLCubeRenderTarget );\n\t\tif ( isCube ) throw new Error( 'Depth Texture with cube render targets is not supported' );\n\n\t\tstate.bindFramebuffer( _gl.FRAMEBUFFER, framebuffer );\n\n\t\tif ( ! ( renderTarget.depthTexture && renderTarget.depthTexture.isDepthTexture ) ) {\n\n\t\t\tthrow new Error( 'renderTarget.depthTexture must be an instance of THREE.DepthTexture' );\n\n\t\t}\n\n\t\t// upload an empty depth texture with framebuffer size\n\t\tif ( ! properties.get( renderTarget.depthTexture ).__webglTexture ||\n\t\t\t\trenderTarget.depthTexture.image.width !== renderTarget.width ||\n\t\t\t\trenderTarget.depthTexture.image.height !== renderTarget.height ) {\n\n\t\t\trenderTarget.depthTexture.image.width = renderTarget.width;\n\t\t\trenderTarget.depthTexture.image.height = renderTarget.height;\n\t\t\trenderTarget.depthTexture.needsUpdate = true;\n\n\t\t}\n\n\t\tsetTexture2D( renderTarget.depthTexture, 0 );\n\n\t\tconst webglDepthTexture = properties.get( renderTarget.depthTexture ).__webglTexture;\n\t\tconst samples = getRenderTargetSamples( renderTarget );\n\n\t\tif ( renderTarget.depthTexture.format === DepthFormat ) {\n\n\t\t\tif ( useMultisampledRTT( renderTarget ) ) {\n\n\t\t\t\tmultisampledRTTExt.framebufferTexture2DMultisampleEXT( _gl.FRAMEBUFFER, _gl.DEPTH_ATTACHMENT, _gl.TEXTURE_2D, webglDepthTexture, 0, samples );\n\n\t\t\t} else {\n\n\t\t\t\t_gl.framebufferTexture2D( _gl.FRAMEBUFFER, _gl.DEPTH_ATTACHMENT, _gl.TEXTURE_2D, webglDepthTexture, 0 );\n\n\t\t\t}\n\n\t\t} else if ( renderTarget.depthTexture.format === DepthStencilFormat ) {\n\n\t\t\tif ( useMultisampledRTT( renderTarget ) ) {\n\n\t\t\t\tmultisampledRTTExt.framebufferTexture2DMultisampleEXT( _gl.FRAMEBUFFER, _gl.DEPTH_STENCIL_ATTACHMENT, _gl.TEXTURE_2D, webglDepthTexture, 0, samples );\n\n\t\t\t} else {\n\n\t\t\t\t_gl.framebufferTexture2D( _gl.FRAMEBUFFER, _gl.DEPTH_STENCIL_ATTACHMENT, _gl.TEXTURE_2D, webglDepthTexture, 0 );\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tthrow new Error( 'Unknown depthTexture format' );\n\n\t\t}\n\n\t}\n\n\t// Setup GL resources for a non-texture depth buffer\n\tfunction setupDepthRenderbuffer( renderTarget ) {\n\n\t\tconst renderTargetProperties = properties.get( renderTarget );\n\t\tconst isCube = ( renderTarget.isWebGLCubeRenderTarget === true );\n\n\t\tif ( renderTarget.depthTexture && ! renderTargetProperties.__autoAllocateDepthBuffer ) {\n\n\t\t\tif ( isCube ) throw new Error( 'target.depthTexture not supported in Cube render targets' );\n\n\t\t\tsetupDepthTexture( renderTargetProperties.__webglFramebuffer, renderTarget );\n\n\t\t} else {\n\n\t\t\tif ( isCube ) {\n\n\t\t\t\trenderTargetProperties.__webglDepthbuffer = [];\n\n\t\t\t\tfor ( let i = 0; i < 6; i ++ ) {\n\n\t\t\t\t\tstate.bindFramebuffer( _gl.FRAMEBUFFER, renderTargetProperties.__webglFramebuffer[ i ] );\n\t\t\t\t\trenderTargetProperties.__webglDepthbuffer[ i ] = _gl.createRenderbuffer();\n\t\t\t\t\tsetupRenderBufferStorage( renderTargetProperties.__webglDepthbuffer[ i ], renderTarget, false );\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\tstate.bindFramebuffer( _gl.FRAMEBUFFER, renderTargetProperties.__webglFramebuffer );\n\t\t\t\trenderTargetProperties.__webglDepthbuffer = _gl.createRenderbuffer();\n\t\t\t\tsetupRenderBufferStorage( renderTargetProperties.__webglDepthbuffer, renderTarget, false );\n\n\t\t\t}\n\n\t\t}\n\n\t\tstate.bindFramebuffer( _gl.FRAMEBUFFER, null );\n\n\t}\n\n\t// rebind framebuffer with external textures\n\tfunction rebindTextures( renderTarget, colorTexture, depthTexture ) {\n\n\t\tconst renderTargetProperties = properties.get( renderTarget );\n\n\t\tif ( colorTexture !== undefined ) {\n\n\t\t\tsetupFrameBufferTexture( renderTargetProperties.__webglFramebuffer, renderTarget, renderTarget.texture, _gl.COLOR_ATTACHMENT0, _gl.TEXTURE_2D, 0 );\n\n\t\t}\n\n\t\tif ( depthTexture !== undefined ) {\n\n\t\t\tsetupDepthRenderbuffer( renderTarget );\n\n\t\t}\n\n\t}\n\n\t// Set up GL resources for the render target\n\tfunction setupRenderTarget( renderTarget ) {\n\n\t\tconst texture = renderTarget.texture;\n\n\t\tconst renderTargetProperties = properties.get( renderTarget );\n\t\tconst textureProperties = properties.get( texture );\n\n\t\trenderTarget.addEventListener( 'dispose', onRenderTargetDispose );\n\n\t\tconst textures = renderTarget.textures;\n\n\t\tconst isCube = ( renderTarget.isWebGLCubeRenderTarget === true );\n\t\tconst isMultipleRenderTargets = ( textures.length > 1 );\n\n\t\tif ( ! isMultipleRenderTargets ) {\n\n\t\t\tif ( textureProperties.__webglTexture === undefined ) {\n\n\t\t\t\ttextureProperties.__webglTexture = _gl.createTexture();\n\n\t\t\t}\n\n\t\t\ttextureProperties.__version = texture.version;\n\t\t\tinfo.memory.textures ++;\n\n\t\t}\n\n\t\t// Setup framebuffer\n\n\t\tif ( isCube ) {\n\n\t\t\trenderTargetProperties.__webglFramebuffer = [];\n\n\t\t\tfor ( let i = 0; i < 6; i ++ ) {\n\n\t\t\t\tif ( texture.mipmaps && texture.mipmaps.length > 0 ) {\n\n\t\t\t\t\trenderTargetProperties.__webglFramebuffer[ i ] = [];\n\n\t\t\t\t\tfor ( let level = 0; level < texture.mipmaps.length; level ++ ) {\n\n\t\t\t\t\t\trenderTargetProperties.__webglFramebuffer[ i ][ level ] = _gl.createFramebuffer();\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\trenderTargetProperties.__webglFramebuffer[ i ] = _gl.createFramebuffer();\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tif ( texture.mipmaps && texture.mipmaps.length > 0 ) {\n\n\t\t\t\trenderTargetProperties.__webglFramebuffer = [];\n\n\t\t\t\tfor ( let level = 0; level < texture.mipmaps.length; level ++ ) {\n\n\t\t\t\t\trenderTargetProperties.__webglFramebuffer[ level ] = _gl.createFramebuffer();\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\trenderTargetProperties.__webglFramebuffer = _gl.createFramebuffer();\n\n\t\t\t}\n\n\t\t\tif ( isMultipleRenderTargets ) {\n\n\t\t\t\tfor ( let i = 0, il = textures.length; i < il; i ++ ) {\n\n\t\t\t\t\tconst attachmentProperties = properties.get( textures[ i ] );\n\n\t\t\t\t\tif ( attachmentProperties.__webglTexture === undefined ) {\n\n\t\t\t\t\t\tattachmentProperties.__webglTexture = _gl.createTexture();\n\n\t\t\t\t\t\tinfo.memory.textures ++;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tif ( ( renderTarget.samples > 0 ) && useMultisampledRTT( renderTarget ) === false ) {\n\n\t\t\t\trenderTargetProperties.__webglMultisampledFramebuffer = _gl.createFramebuffer();\n\t\t\t\trenderTargetProperties.__webglColorRenderbuffer = [];\n\n\t\t\t\tstate.bindFramebuffer( _gl.FRAMEBUFFER, renderTargetProperties.__webglMultisampledFramebuffer );\n\n\t\t\t\tfor ( let i = 0; i < textures.length; i ++ ) {\n\n\t\t\t\t\tconst texture = textures[ i ];\n\t\t\t\t\trenderTargetProperties.__webglColorRenderbuffer[ i ] = _gl.createRenderbuffer();\n\n\t\t\t\t\t_gl.bindRenderbuffer( _gl.RENDERBUFFER, renderTargetProperties.__webglColorRenderbuffer[ i ] );\n\n\t\t\t\t\tconst glFormat = utils.convert( texture.format, texture.colorSpace );\n\t\t\t\t\tconst glType = utils.convert( texture.type );\n\t\t\t\t\tconst glInternalFormat = getInternalFormat( texture.internalFormat, glFormat, glType, texture.colorSpace, renderTarget.isXRRenderTarget === true );\n\t\t\t\t\tconst samples = getRenderTargetSamples( renderTarget );\n\t\t\t\t\t_gl.renderbufferStorageMultisample( _gl.RENDERBUFFER, samples, glInternalFormat, renderTarget.width, renderTarget.height );\n\n\t\t\t\t\t_gl.framebufferRenderbuffer( _gl.FRAMEBUFFER, _gl.COLOR_ATTACHMENT0 + i, _gl.RENDERBUFFER, renderTargetProperties.__webglColorRenderbuffer[ i ] );\n\n\t\t\t\t}\n\n\t\t\t\t_gl.bindRenderbuffer( _gl.RENDERBUFFER, null );\n\n\t\t\t\tif ( renderTarget.depthBuffer ) {\n\n\t\t\t\t\trenderTargetProperties.__webglDepthRenderbuffer = _gl.createRenderbuffer();\n\t\t\t\t\tsetupRenderBufferStorage( renderTargetProperties.__webglDepthRenderbuffer, renderTarget, true );\n\n\t\t\t\t}\n\n\t\t\t\tstate.bindFramebuffer( _gl.FRAMEBUFFER, null );\n\n\t\t\t}\n\n\t\t}\n\n\t\t// Setup color buffer\n\n\t\tif ( isCube ) {\n\n\t\t\tstate.bindTexture( _gl.TEXTURE_CUBE_MAP, textureProperties.__webglTexture );\n\t\t\tsetTextureParameters( _gl.TEXTURE_CUBE_MAP, texture );\n\n\t\t\tfor ( let i = 0; i < 6; i ++ ) {\n\n\t\t\t\tif ( texture.mipmaps && texture.mipmaps.length > 0 ) {\n\n\t\t\t\t\tfor ( let level = 0; level < texture.mipmaps.length; level ++ ) {\n\n\t\t\t\t\t\tsetupFrameBufferTexture( renderTargetProperties.__webglFramebuffer[ i ][ level ], renderTarget, texture, _gl.COLOR_ATTACHMENT0, _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, level );\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\tsetupFrameBufferTexture( renderTargetProperties.__webglFramebuffer[ i ], renderTarget, texture, _gl.COLOR_ATTACHMENT0, _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, 0 );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tif ( textureNeedsGenerateMipmaps( texture ) ) {\n\n\t\t\t\tgenerateMipmap( _gl.TEXTURE_CUBE_MAP );\n\n\t\t\t}\n\n\t\t\tstate.unbindTexture();\n\n\t\t} else if ( isMultipleRenderTargets ) {\n\n\t\t\tfor ( let i = 0, il = textures.length; i < il; i ++ ) {\n\n\t\t\t\tconst attachment = textures[ i ];\n\t\t\t\tconst attachmentProperties = properties.get( attachment );\n\n\t\t\t\tstate.bindTexture( _gl.TEXTURE_2D, attachmentProperties.__webglTexture );\n\t\t\t\tsetTextureParameters( _gl.TEXTURE_2D, attachment );\n\t\t\t\tsetupFrameBufferTexture( renderTargetProperties.__webglFramebuffer, renderTarget, attachment, _gl.COLOR_ATTACHMENT0 + i, _gl.TEXTURE_2D, 0 );\n\n\t\t\t\tif ( textureNeedsGenerateMipmaps( attachment ) ) {\n\n\t\t\t\t\tgenerateMipmap( _gl.TEXTURE_2D );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tstate.unbindTexture();\n\n\t\t} else {\n\n\t\t\tlet glTextureType = _gl.TEXTURE_2D;\n\n\t\t\tif ( renderTarget.isWebGL3DRenderTarget || renderTarget.isWebGLArrayRenderTarget ) {\n\n\t\t\t\tglTextureType = renderTarget.isWebGL3DRenderTarget ? _gl.TEXTURE_3D : _gl.TEXTURE_2D_ARRAY;\n\n\t\t\t}\n\n\t\t\tstate.bindTexture( glTextureType, textureProperties.__webglTexture );\n\t\t\tsetTextureParameters( glTextureType, texture );\n\n\t\t\tif ( texture.mipmaps && texture.mipmaps.length > 0 ) {\n\n\t\t\t\tfor ( let level = 0; level < texture.mipmaps.length; level ++ ) {\n\n\t\t\t\t\tsetupFrameBufferTexture( renderTargetProperties.__webglFramebuffer[ level ], renderTarget, texture, _gl.COLOR_ATTACHMENT0, glTextureType, level );\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\tsetupFrameBufferTexture( renderTargetProperties.__webglFramebuffer, renderTarget, texture, _gl.COLOR_ATTACHMENT0, glTextureType, 0 );\n\n\t\t\t}\n\n\t\t\tif ( textureNeedsGenerateMipmaps( texture ) ) {\n\n\t\t\t\tgenerateMipmap( glTextureType );\n\n\t\t\t}\n\n\t\t\tstate.unbindTexture();\n\n\t\t}\n\n\t\t// Setup depth and stencil buffers\n\n\t\tif ( renderTarget.depthBuffer ) {\n\n\t\t\tsetupDepthRenderbuffer( renderTarget );\n\n\t\t}\n\n\t}\n\n\tfunction updateRenderTargetMipmap( renderTarget ) {\n\n\t\tconst textures = renderTarget.textures;\n\n\t\tfor ( let i = 0, il = textures.length; i < il; i ++ ) {\n\n\t\t\tconst texture = textures[ i ];\n\n\t\t\tif ( textureNeedsGenerateMipmaps( texture ) ) {\n\n\t\t\t\tconst target = renderTarget.isWebGLCubeRenderTarget ? _gl.TEXTURE_CUBE_MAP : _gl.TEXTURE_2D;\n\t\t\t\tconst webglTexture = properties.get( texture ).__webglTexture;\n\n\t\t\t\tstate.bindTexture( target, webglTexture );\n\t\t\t\tgenerateMipmap( target );\n\t\t\t\tstate.unbindTexture();\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\tconst invalidationArrayRead = [];\n\tconst invalidationArrayDraw = [];\n\n\tfunction updateMultisampleRenderTarget( renderTarget ) {\n\n\t\tif ( renderTarget.samples > 0 ) {\n\n\t\t\tif ( useMultisampledRTT( renderTarget ) === false ) {\n\n\t\t\t\tconst textures = renderTarget.textures;\n\t\t\t\tconst width = renderTarget.width;\n\t\t\t\tconst height = renderTarget.height;\n\t\t\t\tlet mask = _gl.COLOR_BUFFER_BIT;\n\t\t\t\tconst depthStyle = renderTarget.stencilBuffer ? _gl.DEPTH_STENCIL_ATTACHMENT : _gl.DEPTH_ATTACHMENT;\n\t\t\t\tconst renderTargetProperties = properties.get( renderTarget );\n\t\t\t\tconst isMultipleRenderTargets = ( textures.length > 1 );\n\n\t\t\t\t// If MRT we need to remove FBO attachments\n\t\t\t\tif ( isMultipleRenderTargets ) {\n\n\t\t\t\t\tfor ( let i = 0; i < textures.length; i ++ ) {\n\n\t\t\t\t\t\tstate.bindFramebuffer( _gl.FRAMEBUFFER, renderTargetProperties.__webglMultisampledFramebuffer );\n\t\t\t\t\t\t_gl.framebufferRenderbuffer( _gl.FRAMEBUFFER, _gl.COLOR_ATTACHMENT0 + i, _gl.RENDERBUFFER, null );\n\n\t\t\t\t\t\tstate.bindFramebuffer( _gl.FRAMEBUFFER, renderTargetProperties.__webglFramebuffer );\n\t\t\t\t\t\t_gl.framebufferTexture2D( _gl.DRAW_FRAMEBUFFER, _gl.COLOR_ATTACHMENT0 + i, _gl.TEXTURE_2D, null, 0 );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tstate.bindFramebuffer( _gl.READ_FRAMEBUFFER, renderTargetProperties.__webglMultisampledFramebuffer );\n\t\t\t\tstate.bindFramebuffer( _gl.DRAW_FRAMEBUFFER, renderTargetProperties.__webglFramebuffer );\n\n\t\t\t\tfor ( let i = 0; i < textures.length; i ++ ) {\n\n\t\t\t\t\tif ( renderTarget.resolveDepthBuffer ) {\n\n\t\t\t\t\t\tif ( renderTarget.depthBuffer ) mask |= _gl.DEPTH_BUFFER_BIT;\n\n\t\t\t\t\t\t// resolving stencil is slow with a D3D backend. disable it for all transmission render targets (see #27799)\n\n\t\t\t\t\t\tif ( renderTarget.stencilBuffer && renderTarget.resolveStencilBuffer ) mask |= _gl.STENCIL_BUFFER_BIT;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( isMultipleRenderTargets ) {\n\n\t\t\t\t\t\t_gl.framebufferRenderbuffer( _gl.READ_FRAMEBUFFER, _gl.COLOR_ATTACHMENT0, _gl.RENDERBUFFER, renderTargetProperties.__webglColorRenderbuffer[ i ] );\n\n\t\t\t\t\t\tconst webglTexture = properties.get( textures[ i ] ).__webglTexture;\n\t\t\t\t\t\t_gl.framebufferTexture2D( _gl.DRAW_FRAMEBUFFER, _gl.COLOR_ATTACHMENT0, _gl.TEXTURE_2D, webglTexture, 0 );\n\n\t\t\t\t\t}\n\n\t\t\t\t\t_gl.blitFramebuffer( 0, 0, width, height, 0, 0, width, height, mask, _gl.NEAREST );\n\n\t\t\t\t\tif ( supportsInvalidateFramebuffer === true ) {\n\n\t\t\t\t\t\tinvalidationArrayRead.length = 0;\n\t\t\t\t\t\tinvalidationArrayDraw.length = 0;\n\n\t\t\t\t\t\tinvalidationArrayRead.push( _gl.COLOR_ATTACHMENT0 + i );\n\n\t\t\t\t\t\tif ( renderTarget.depthBuffer && renderTarget.resolveDepthBuffer === false ) {\n\n\t\t\t\t\t\t\tinvalidationArrayRead.push( depthStyle );\n\t\t\t\t\t\t\tinvalidationArrayDraw.push( depthStyle );\n\n\t\t\t\t\t\t\t_gl.invalidateFramebuffer( _gl.DRAW_FRAMEBUFFER, invalidationArrayDraw );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t_gl.invalidateFramebuffer( _gl.READ_FRAMEBUFFER, invalidationArrayRead );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tstate.bindFramebuffer( _gl.READ_FRAMEBUFFER, null );\n\t\t\t\tstate.bindFramebuffer( _gl.DRAW_FRAMEBUFFER, null );\n\n\t\t\t\t// If MRT since pre-blit we removed the FBO we need to reconstruct the attachments\n\t\t\t\tif ( isMultipleRenderTargets ) {\n\n\t\t\t\t\tfor ( let i = 0; i < textures.length; i ++ ) {\n\n\t\t\t\t\t\tstate.bindFramebuffer( _gl.FRAMEBUFFER, renderTargetProperties.__webglMultisampledFramebuffer );\n\t\t\t\t\t\t_gl.framebufferRenderbuffer( _gl.FRAMEBUFFER, _gl.COLOR_ATTACHMENT0 + i, _gl.RENDERBUFFER, renderTargetProperties.__webglColorRenderbuffer[ i ] );\n\n\t\t\t\t\t\tconst webglTexture = properties.get( textures[ i ] ).__webglTexture;\n\n\t\t\t\t\t\tstate.bindFramebuffer( _gl.FRAMEBUFFER, renderTargetProperties.__webglFramebuffer );\n\t\t\t\t\t\t_gl.framebufferTexture2D( _gl.DRAW_FRAMEBUFFER, _gl.COLOR_ATTACHMENT0 + i, _gl.TEXTURE_2D, webglTexture, 0 );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tstate.bindFramebuffer( _gl.DRAW_FRAMEBUFFER, renderTargetProperties.__webglMultisampledFramebuffer );\n\n\t\t\t} else {\n\n\t\t\t\tif ( renderTarget.depthBuffer && renderTarget.resolveDepthBuffer === false && supportsInvalidateFramebuffer ) {\n\n\t\t\t\t\tconst depthStyle = renderTarget.stencilBuffer ? _gl.DEPTH_STENCIL_ATTACHMENT : _gl.DEPTH_ATTACHMENT;\n\n\t\t\t\t\t_gl.invalidateFramebuffer( _gl.DRAW_FRAMEBUFFER, [ depthStyle ] );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\tfunction getRenderTargetSamples( renderTarget ) {\n\n\t\treturn Math.min( capabilities.maxSamples, renderTarget.samples );\n\n\t}\n\n\tfunction useMultisampledRTT( renderTarget ) {\n\n\t\tconst renderTargetProperties = properties.get( renderTarget );\n\n\t\treturn renderTarget.samples > 0 && extensions.has( 'WEBGL_multisampled_render_to_texture' ) === true && renderTargetProperties.__useRenderToTexture !== false;\n\n\t}\n\n\tfunction updateVideoTexture( texture ) {\n\n\t\tconst frame = info.render.frame;\n\n\t\t// Check the last frame we updated the VideoTexture\n\n\t\tif ( _videoTextures.get( texture ) !== frame ) {\n\n\t\t\t_videoTextures.set( texture, frame );\n\t\t\ttexture.update();\n\n\t\t}\n\n\t}\n\n\tfunction verifyColorSpace( texture, image ) {\n\n\t\tconst colorSpace = texture.colorSpace;\n\t\tconst format = texture.format;\n\t\tconst type = texture.type;\n\n\t\tif ( texture.isCompressedTexture === true || texture.isVideoTexture === true ) return image;\n\n\t\tif ( colorSpace !== LinearSRGBColorSpace && colorSpace !== NoColorSpace ) {\n\n\t\t\t// sRGB\n\n\t\t\tif ( ColorManagement.getTransfer( colorSpace ) === SRGBTransfer ) {\n\n\t\t\t\t// in WebGL 2 uncompressed textures can only be sRGB encoded if they have the RGBA8 format\n\n\t\t\t\tif ( format !== RGBAFormat || type !== UnsignedByteType ) {\n\n\t\t\t\t\tconsole.warn( 'THREE.WebGLTextures: sRGB encoded textures have to use RGBAFormat and UnsignedByteType.' );\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\tconsole.error( 'THREE.WebGLTextures: Unsupported texture color space:', colorSpace );\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn image;\n\n\t}\n\n\tfunction getDimensions( image ) {\n\n\t\tif ( typeof HTMLImageElement !== 'undefined' && image instanceof HTMLImageElement ) {\n\n\t\t\t// if intrinsic data are not available, fallback to width/height\n\n\t\t\t_imageDimensions.width = image.naturalWidth || image.width;\n\t\t\t_imageDimensions.height = image.naturalHeight || image.height;\n\n\t\t} else if ( typeof VideoFrame !== 'undefined' && image instanceof VideoFrame ) {\n\n\t\t\t_imageDimensions.width = image.displayWidth;\n\t\t\t_imageDimensions.height = image.displayHeight;\n\n\t\t} else {\n\n\t\t\t_imageDimensions.width = image.width;\n\t\t\t_imageDimensions.height = image.height;\n\n\t\t}\n\n\t\treturn _imageDimensions;\n\n\t}\n\n\t//\n\n\tthis.allocateTextureUnit = allocateTextureUnit;\n\tthis.resetTextureUnits = resetTextureUnits;\n\n\tthis.setTexture2D = setTexture2D;\n\tthis.setTexture2DArray = setTexture2DArray;\n\tthis.setTexture3D = setTexture3D;\n\tthis.setTextureCube = setTextureCube;\n\tthis.rebindTextures = rebindTextures;\n\tthis.setupRenderTarget = setupRenderTarget;\n\tthis.updateRenderTargetMipmap = updateRenderTargetMipmap;\n\tthis.updateMultisampleRenderTarget = updateMultisampleRenderTarget;\n\tthis.setupDepthRenderbuffer = setupDepthRenderbuffer;\n\tthis.setupFrameBufferTexture = setupFrameBufferTexture;\n\tthis.useMultisampledRTT = useMultisampledRTT;\n\n}\n\nfunction WebGLUtils( gl, extensions ) {\n\n\tfunction convert( p, colorSpace = NoColorSpace ) {\n\n\t\tlet extension;\n\n\t\tconst transfer = ColorManagement.getTransfer( colorSpace );\n\n\t\tif ( p === UnsignedByteType ) return gl.UNSIGNED_BYTE;\n\t\tif ( p === UnsignedShort4444Type ) return gl.UNSIGNED_SHORT_4_4_4_4;\n\t\tif ( p === UnsignedShort5551Type ) return gl.UNSIGNED_SHORT_5_5_5_1;\n\t\tif ( p === UnsignedInt5999Type ) return gl.UNSIGNED_INT_5_9_9_9_REV;\n\n\t\tif ( p === ByteType ) return gl.BYTE;\n\t\tif ( p === ShortType ) return gl.SHORT;\n\t\tif ( p === UnsignedShortType ) return gl.UNSIGNED_SHORT;\n\t\tif ( p === IntType ) return gl.INT;\n\t\tif ( p === UnsignedIntType ) return gl.UNSIGNED_INT;\n\t\tif ( p === FloatType ) return gl.FLOAT;\n\t\tif ( p === HalfFloatType ) return gl.HALF_FLOAT;\n\n\t\tif ( p === AlphaFormat ) return gl.ALPHA;\n\t\tif ( p === RGBFormat ) return gl.RGB;\n\t\tif ( p === RGBAFormat ) return gl.RGBA;\n\t\tif ( p === LuminanceFormat ) return gl.LUMINANCE;\n\t\tif ( p === LuminanceAlphaFormat ) return gl.LUMINANCE_ALPHA;\n\t\tif ( p === DepthFormat ) return gl.DEPTH_COMPONENT;\n\t\tif ( p === DepthStencilFormat ) return gl.DEPTH_STENCIL;\n\n\t\t// WebGL2 formats.\n\n\t\tif ( p === RedFormat ) return gl.RED;\n\t\tif ( p === RedIntegerFormat ) return gl.RED_INTEGER;\n\t\tif ( p === RGFormat ) return gl.RG;\n\t\tif ( p === RGIntegerFormat ) return gl.RG_INTEGER;\n\t\tif ( p === RGBAIntegerFormat ) return gl.RGBA_INTEGER;\n\n\t\t// S3TC\n\n\t\tif ( p === RGB_S3TC_DXT1_Format || p === RGBA_S3TC_DXT1_Format || p === RGBA_S3TC_DXT3_Format || p === RGBA_S3TC_DXT5_Format ) {\n\n\t\t\tif ( transfer === SRGBTransfer ) {\n\n\t\t\t\textension = extensions.get( 'WEBGL_compressed_texture_s3tc_srgb' );\n\n\t\t\t\tif ( extension !== null ) {\n\n\t\t\t\t\tif ( p === RGB_S3TC_DXT1_Format ) return extension.COMPRESSED_SRGB_S3TC_DXT1_EXT;\n\t\t\t\t\tif ( p === RGBA_S3TC_DXT1_Format ) return extension.COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT;\n\t\t\t\t\tif ( p === RGBA_S3TC_DXT3_Format ) return extension.COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT;\n\t\t\t\t\tif ( p === RGBA_S3TC_DXT5_Format ) return extension.COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT;\n\n\t\t\t\t} else {\n\n\t\t\t\t\treturn null;\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\textension = extensions.get( 'WEBGL_compressed_texture_s3tc' );\n\n\t\t\t\tif ( extension !== null ) {\n\n\t\t\t\t\tif ( p === RGB_S3TC_DXT1_Format ) return extension.COMPRESSED_RGB_S3TC_DXT1_EXT;\n\t\t\t\t\tif ( p === RGBA_S3TC_DXT1_Format ) return extension.COMPRESSED_RGBA_S3TC_DXT1_EXT;\n\t\t\t\t\tif ( p === RGBA_S3TC_DXT3_Format ) return extension.COMPRESSED_RGBA_S3TC_DXT3_EXT;\n\t\t\t\t\tif ( p === RGBA_S3TC_DXT5_Format ) return extension.COMPRESSED_RGBA_S3TC_DXT5_EXT;\n\n\t\t\t\t} else {\n\n\t\t\t\t\treturn null;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\t// PVRTC\n\n\t\tif ( p === RGB_PVRTC_4BPPV1_Format || p === RGB_PVRTC_2BPPV1_Format || p === RGBA_PVRTC_4BPPV1_Format || p === RGBA_PVRTC_2BPPV1_Format ) {\n\n\t\t\textension = extensions.get( 'WEBGL_compressed_texture_pvrtc' );\n\n\t\t\tif ( extension !== null ) {\n\n\t\t\t\tif ( p === RGB_PVRTC_4BPPV1_Format ) return extension.COMPRESSED_RGB_PVRTC_4BPPV1_IMG;\n\t\t\t\tif ( p === RGB_PVRTC_2BPPV1_Format ) return extension.COMPRESSED_RGB_PVRTC_2BPPV1_IMG;\n\t\t\t\tif ( p === RGBA_PVRTC_4BPPV1_Format ) return extension.COMPRESSED_RGBA_PVRTC_4BPPV1_IMG;\n\t\t\t\tif ( p === RGBA_PVRTC_2BPPV1_Format ) return extension.COMPRESSED_RGBA_PVRTC_2BPPV1_IMG;\n\n\t\t\t} else {\n\n\t\t\t\treturn null;\n\n\t\t\t}\n\n\t\t}\n\n\t\t// ETC\n\n\t\tif ( p === RGB_ETC1_Format || p === RGB_ETC2_Format || p === RGBA_ETC2_EAC_Format ) {\n\n\t\t\textension = extensions.get( 'WEBGL_compressed_texture_etc' );\n\n\t\t\tif ( extension !== null ) {\n\n\t\t\t\tif ( p === RGB_ETC1_Format || p === RGB_ETC2_Format ) return ( transfer === SRGBTransfer ) ? extension.COMPRESSED_SRGB8_ETC2 : extension.COMPRESSED_RGB8_ETC2;\n\t\t\t\tif ( p === RGBA_ETC2_EAC_Format ) return ( transfer === SRGBTransfer ) ? extension.COMPRESSED_SRGB8_ALPHA8_ETC2_EAC : extension.COMPRESSED_RGBA8_ETC2_EAC;\n\n\t\t\t} else {\n\n\t\t\t\treturn null;\n\n\t\t\t}\n\n\t\t}\n\n\t\t// ASTC\n\n\t\tif ( p === RGBA_ASTC_4x4_Format || p === RGBA_ASTC_5x4_Format || p === RGBA_ASTC_5x5_Format ||\n\t\t\tp === RGBA_ASTC_6x5_Format || p === RGBA_ASTC_6x6_Format || p === RGBA_ASTC_8x5_Format ||\n\t\t\tp === RGBA_ASTC_8x6_Format || p === RGBA_ASTC_8x8_Format || p === RGBA_ASTC_10x5_Format ||\n\t\t\tp === RGBA_ASTC_10x6_Format || p === RGBA_ASTC_10x8_Format || p === RGBA_ASTC_10x10_Format ||\n\t\t\tp === RGBA_ASTC_12x10_Format || p === RGBA_ASTC_12x12_Format ) {\n\n\t\t\textension = extensions.get( 'WEBGL_compressed_texture_astc' );\n\n\t\t\tif ( extension !== null ) {\n\n\t\t\t\tif ( p === RGBA_ASTC_4x4_Format ) return ( transfer === SRGBTransfer ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR : extension.COMPRESSED_RGBA_ASTC_4x4_KHR;\n\t\t\t\tif ( p === RGBA_ASTC_5x4_Format ) return ( transfer === SRGBTransfer ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR : extension.COMPRESSED_RGBA_ASTC_5x4_KHR;\n\t\t\t\tif ( p === RGBA_ASTC_5x5_Format ) return ( transfer === SRGBTransfer ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR : extension.COMPRESSED_RGBA_ASTC_5x5_KHR;\n\t\t\t\tif ( p === RGBA_ASTC_6x5_Format ) return ( transfer === SRGBTransfer ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR : extension.COMPRESSED_RGBA_ASTC_6x5_KHR;\n\t\t\t\tif ( p === RGBA_ASTC_6x6_Format ) return ( transfer === SRGBTransfer ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR : extension.COMPRESSED_RGBA_ASTC_6x6_KHR;\n\t\t\t\tif ( p === RGBA_ASTC_8x5_Format ) return ( transfer === SRGBTransfer ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR : extension.COMPRESSED_RGBA_ASTC_8x5_KHR;\n\t\t\t\tif ( p === RGBA_ASTC_8x6_Format ) return ( transfer === SRGBTransfer ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR : extension.COMPRESSED_RGBA_ASTC_8x6_KHR;\n\t\t\t\tif ( p === RGBA_ASTC_8x8_Format ) return ( transfer === SRGBTransfer ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR : extension.COMPRESSED_RGBA_ASTC_8x8_KHR;\n\t\t\t\tif ( p === RGBA_ASTC_10x5_Format ) return ( transfer === SRGBTransfer ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR : extension.COMPRESSED_RGBA_ASTC_10x5_KHR;\n\t\t\t\tif ( p === RGBA_ASTC_10x6_Format ) return ( transfer === SRGBTransfer ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR : extension.COMPRESSED_RGBA_ASTC_10x6_KHR;\n\t\t\t\tif ( p === RGBA_ASTC_10x8_Format ) return ( transfer === SRGBTransfer ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR : extension.COMPRESSED_RGBA_ASTC_10x8_KHR;\n\t\t\t\tif ( p === RGBA_ASTC_10x10_Format ) return ( transfer === SRGBTransfer ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR : extension.COMPRESSED_RGBA_ASTC_10x10_KHR;\n\t\t\t\tif ( p === RGBA_ASTC_12x10_Format ) return ( transfer === SRGBTransfer ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR : extension.COMPRESSED_RGBA_ASTC_12x10_KHR;\n\t\t\t\tif ( p === RGBA_ASTC_12x12_Format ) return ( transfer === SRGBTransfer ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR : extension.COMPRESSED_RGBA_ASTC_12x12_KHR;\n\n\t\t\t} else {\n\n\t\t\t\treturn null;\n\n\t\t\t}\n\n\t\t}\n\n\t\t// BPTC\n\n\t\tif ( p === RGBA_BPTC_Format || p === RGB_BPTC_SIGNED_Format || p === RGB_BPTC_UNSIGNED_Format ) {\n\n\t\t\textension = extensions.get( 'EXT_texture_compression_bptc' );\n\n\t\t\tif ( extension !== null ) {\n\n\t\t\t\tif ( p === RGBA_BPTC_Format ) return ( transfer === SRGBTransfer ) ? extension.COMPRESSED_SRGB_ALPHA_BPTC_UNORM_EXT : extension.COMPRESSED_RGBA_BPTC_UNORM_EXT;\n\t\t\t\tif ( p === RGB_BPTC_SIGNED_Format ) return extension.COMPRESSED_RGB_BPTC_SIGNED_FLOAT_EXT;\n\t\t\t\tif ( p === RGB_BPTC_UNSIGNED_Format ) return extension.COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT_EXT;\n\n\t\t\t} else {\n\n\t\t\t\treturn null;\n\n\t\t\t}\n\n\t\t}\n\n\t\t// RGTC\n\n\t\tif ( p === RED_RGTC1_Format || p === SIGNED_RED_RGTC1_Format || p === RED_GREEN_RGTC2_Format || p === SIGNED_RED_GREEN_RGTC2_Format ) {\n\n\t\t\textension = extensions.get( 'EXT_texture_compression_rgtc' );\n\n\t\t\tif ( extension !== null ) {\n\n\t\t\t\tif ( p === RGBA_BPTC_Format ) return extension.COMPRESSED_RED_RGTC1_EXT;\n\t\t\t\tif ( p === SIGNED_RED_RGTC1_Format ) return extension.COMPRESSED_SIGNED_RED_RGTC1_EXT;\n\t\t\t\tif ( p === RED_GREEN_RGTC2_Format ) return extension.COMPRESSED_RED_GREEN_RGTC2_EXT;\n\t\t\t\tif ( p === SIGNED_RED_GREEN_RGTC2_Format ) return extension.COMPRESSED_SIGNED_RED_GREEN_RGTC2_EXT;\n\n\t\t\t} else {\n\n\t\t\t\treturn null;\n\n\t\t\t}\n\n\t\t}\n\n\t\t//\n\n\t\tif ( p === UnsignedInt248Type ) return gl.UNSIGNED_INT_24_8;\n\n\t\t// if \"p\" can't be resolved, assume the user defines a WebGL constant as a string (fallback/workaround for packed RGB formats)\n\n\t\treturn ( gl[ p ] !== undefined ) ? gl[ p ] : null;\n\n\t}\n\n\treturn { convert: convert };\n\n}\n\nclass ArrayCamera extends PerspectiveCamera {\n\n\tconstructor( array = [] ) {\n\n\t\tsuper();\n\n\t\tthis.isArrayCamera = true;\n\n\t\tthis.cameras = array;\n\n\t}\n\n}\n\nclass Group extends Object3D {\n\n\tconstructor() {\n\n\t\tsuper();\n\n\t\tthis.isGroup = true;\n\n\t\tthis.type = 'Group';\n\n\t}\n\n}\n\nconst _moveEvent = { type: 'move' };\n\nclass WebXRController {\n\n\tconstructor() {\n\n\t\tthis._targetRay = null;\n\t\tthis._grip = null;\n\t\tthis._hand = null;\n\n\t}\n\n\tgetHandSpace() {\n\n\t\tif ( this._hand === null ) {\n\n\t\t\tthis._hand = new Group();\n\t\t\tthis._hand.matrixAutoUpdate = false;\n\t\t\tthis._hand.visible = false;\n\n\t\t\tthis._hand.joints = {};\n\t\t\tthis._hand.inputState = { pinching: false };\n\n\t\t}\n\n\t\treturn this._hand;\n\n\t}\n\n\tgetTargetRaySpace() {\n\n\t\tif ( this._targetRay === null ) {\n\n\t\t\tthis._targetRay = new Group();\n\t\t\tthis._targetRay.matrixAutoUpdate = false;\n\t\t\tthis._targetRay.visible = false;\n\t\t\tthis._targetRay.hasLinearVelocity = false;\n\t\t\tthis._targetRay.linearVelocity = new Vector3();\n\t\t\tthis._targetRay.hasAngularVelocity = false;\n\t\t\tthis._targetRay.angularVelocity = new Vector3();\n\n\t\t}\n\n\t\treturn this._targetRay;\n\n\t}\n\n\tgetGripSpace() {\n\n\t\tif ( this._grip === null ) {\n\n\t\t\tthis._grip = new Group();\n\t\t\tthis._grip.matrixAutoUpdate = false;\n\t\t\tthis._grip.visible = false;\n\t\t\tthis._grip.hasLinearVelocity = false;\n\t\t\tthis._grip.linearVelocity = new Vector3();\n\t\t\tthis._grip.hasAngularVelocity = false;\n\t\t\tthis._grip.angularVelocity = new Vector3();\n\n\t\t}\n\n\t\treturn this._grip;\n\n\t}\n\n\tdispatchEvent( event ) {\n\n\t\tif ( this._targetRay !== null ) {\n\n\t\t\tthis._targetRay.dispatchEvent( event );\n\n\t\t}\n\n\t\tif ( this._grip !== null ) {\n\n\t\t\tthis._grip.dispatchEvent( event );\n\n\t\t}\n\n\t\tif ( this._hand !== null ) {\n\n\t\t\tthis._hand.dispatchEvent( event );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tconnect( inputSource ) {\n\n\t\tif ( inputSource && inputSource.hand ) {\n\n\t\t\tconst hand = this._hand;\n\n\t\t\tif ( hand ) {\n\n\t\t\t\tfor ( const inputjoint of inputSource.hand.values() ) {\n\n\t\t\t\t\t// Initialize hand with joints when connected\n\t\t\t\t\tthis._getHandJoint( hand, inputjoint );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tthis.dispatchEvent( { type: 'connected', data: inputSource } );\n\n\t\treturn this;\n\n\t}\n\n\tdisconnect( inputSource ) {\n\n\t\tthis.dispatchEvent( { type: 'disconnected', data: inputSource } );\n\n\t\tif ( this._targetRay !== null ) {\n\n\t\t\tthis._targetRay.visible = false;\n\n\t\t}\n\n\t\tif ( this._grip !== null ) {\n\n\t\t\tthis._grip.visible = false;\n\n\t\t}\n\n\t\tif ( this._hand !== null ) {\n\n\t\t\tthis._hand.visible = false;\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tupdate( inputSource, frame, referenceSpace ) {\n\n\t\tlet inputPose = null;\n\t\tlet gripPose = null;\n\t\tlet handPose = null;\n\n\t\tconst targetRay = this._targetRay;\n\t\tconst grip = this._grip;\n\t\tconst hand = this._hand;\n\n\t\tif ( inputSource && frame.session.visibilityState !== 'visible-blurred' ) {\n\n\t\t\tif ( hand && inputSource.hand ) {\n\n\t\t\t\thandPose = true;\n\n\t\t\t\tfor ( const inputjoint of inputSource.hand.values() ) {\n\n\t\t\t\t\t// Update the joints groups with the XRJoint poses\n\t\t\t\t\tconst jointPose = frame.getJointPose( inputjoint, referenceSpace );\n\n\t\t\t\t\t// The transform of this joint will be updated with the joint pose on each frame\n\t\t\t\t\tconst joint = this._getHandJoint( hand, inputjoint );\n\n\t\t\t\t\tif ( jointPose !== null ) {\n\n\t\t\t\t\t\tjoint.matrix.fromArray( jointPose.transform.matrix );\n\t\t\t\t\t\tjoint.matrix.decompose( joint.position, joint.rotation, joint.scale );\n\t\t\t\t\t\tjoint.matrixWorldNeedsUpdate = true;\n\t\t\t\t\t\tjoint.jointRadius = jointPose.radius;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tjoint.visible = jointPose !== null;\n\n\t\t\t\t}\n\n\t\t\t\t// Custom events\n\n\t\t\t\t// Check pinchz\n\t\t\t\tconst indexTip = hand.joints[ 'index-finger-tip' ];\n\t\t\t\tconst thumbTip = hand.joints[ 'thumb-tip' ];\n\t\t\t\tconst distance = indexTip.position.distanceTo( thumbTip.position );\n\n\t\t\t\tconst distanceToPinch = 0.02;\n\t\t\t\tconst threshold = 0.005;\n\n\t\t\t\tif ( hand.inputState.pinching && distance > distanceToPinch + threshold ) {\n\n\t\t\t\t\thand.inputState.pinching = false;\n\t\t\t\t\tthis.dispatchEvent( {\n\t\t\t\t\t\ttype: 'pinchend',\n\t\t\t\t\t\thandedness: inputSource.handedness,\n\t\t\t\t\t\ttarget: this\n\t\t\t\t\t} );\n\n\t\t\t\t} else if ( ! hand.inputState.pinching && distance <= distanceToPinch - threshold ) {\n\n\t\t\t\t\thand.inputState.pinching = true;\n\t\t\t\t\tthis.dispatchEvent( {\n\t\t\t\t\t\ttype: 'pinchstart',\n\t\t\t\t\t\thandedness: inputSource.handedness,\n\t\t\t\t\t\ttarget: this\n\t\t\t\t\t} );\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\tif ( grip !== null && inputSource.gripSpace ) {\n\n\t\t\t\t\tgripPose = frame.getPose( inputSource.gripSpace, referenceSpace );\n\n\t\t\t\t\tif ( gripPose !== null ) {\n\n\t\t\t\t\t\tgrip.matrix.fromArray( gripPose.transform.matrix );\n\t\t\t\t\t\tgrip.matrix.decompose( grip.position, grip.rotation, grip.scale );\n\t\t\t\t\t\tgrip.matrixWorldNeedsUpdate = true;\n\n\t\t\t\t\t\tif ( gripPose.linearVelocity ) {\n\n\t\t\t\t\t\t\tgrip.hasLinearVelocity = true;\n\t\t\t\t\t\t\tgrip.linearVelocity.copy( gripPose.linearVelocity );\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\tgrip.hasLinearVelocity = false;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tif ( gripPose.angularVelocity ) {\n\n\t\t\t\t\t\t\tgrip.hasAngularVelocity = true;\n\t\t\t\t\t\t\tgrip.angularVelocity.copy( gripPose.angularVelocity );\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\tgrip.hasAngularVelocity = false;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tif ( targetRay !== null ) {\n\n\t\t\t\tinputPose = frame.getPose( inputSource.targetRaySpace, referenceSpace );\n\n\t\t\t\t// Some runtimes (namely Vive Cosmos with Vive OpenXR Runtime) have only grip space and ray space is equal to it\n\t\t\t\tif ( inputPose === null && gripPose !== null ) {\n\n\t\t\t\t\tinputPose = gripPose;\n\n\t\t\t\t}\n\n\t\t\t\tif ( inputPose !== null ) {\n\n\t\t\t\t\ttargetRay.matrix.fromArray( inputPose.transform.matrix );\n\t\t\t\t\ttargetRay.matrix.decompose( targetRay.position, targetRay.rotation, targetRay.scale );\n\t\t\t\t\ttargetRay.matrixWorldNeedsUpdate = true;\n\n\t\t\t\t\tif ( inputPose.linearVelocity ) {\n\n\t\t\t\t\t\ttargetRay.hasLinearVelocity = true;\n\t\t\t\t\t\ttargetRay.linearVelocity.copy( inputPose.linearVelocity );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\ttargetRay.hasLinearVelocity = false;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( inputPose.angularVelocity ) {\n\n\t\t\t\t\t\ttargetRay.hasAngularVelocity = true;\n\t\t\t\t\t\ttargetRay.angularVelocity.copy( inputPose.angularVelocity );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\ttargetRay.hasAngularVelocity = false;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tthis.dispatchEvent( _moveEvent );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\n\t\t}\n\n\t\tif ( targetRay !== null ) {\n\n\t\t\ttargetRay.visible = ( inputPose !== null );\n\n\t\t}\n\n\t\tif ( grip !== null ) {\n\n\t\t\tgrip.visible = ( gripPose !== null );\n\n\t\t}\n\n\t\tif ( hand !== null ) {\n\n\t\t\thand.visible = ( handPose !== null );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\t// private method\n\n\t_getHandJoint( hand, inputjoint ) {\n\n\t\tif ( hand.joints[ inputjoint.jointName ] === undefined ) {\n\n\t\t\tconst joint = new Group();\n\t\t\tjoint.matrixAutoUpdate = false;\n\t\t\tjoint.visible = false;\n\t\t\thand.joints[ inputjoint.jointName ] = joint;\n\n\t\t\thand.add( joint );\n\n\t\t}\n\n\t\treturn hand.joints[ inputjoint.jointName ];\n\n\t}\n\n}\n\nconst _occlusion_vertex = `\nvoid main() {\n\n\tgl_Position = vec4( position, 1.0 );\n\n}`;\n\nconst _occlusion_fragment = `\nuniform sampler2DArray depthColor;\nuniform float depthWidth;\nuniform float depthHeight;\n\nvoid main() {\n\n\tvec2 coord = vec2( gl_FragCoord.x / depthWidth, gl_FragCoord.y / depthHeight );\n\n\tif ( coord.x >= 1.0 ) {\n\n\t\tgl_FragDepth = texture( depthColor, vec3( coord.x - 1.0, coord.y, 1 ) ).r;\n\n\t} else {\n\n\t\tgl_FragDepth = texture( depthColor, vec3( coord.x, coord.y, 0 ) ).r;\n\n\t}\n\n}`;\n\nclass WebXRDepthSensing {\n\n\tconstructor() {\n\n\t\tthis.texture = null;\n\t\tthis.mesh = null;\n\n\t\tthis.depthNear = 0;\n\t\tthis.depthFar = 0;\n\n\t}\n\n\tinit( renderer, depthData, renderState ) {\n\n\t\tif ( this.texture === null ) {\n\n\t\t\tconst texture = new Texture();\n\n\t\t\tconst texProps = renderer.properties.get( texture );\n\t\t\ttexProps.__webglTexture = depthData.texture;\n\n\t\t\tif ( ( depthData.depthNear != renderState.depthNear ) || ( depthData.depthFar != renderState.depthFar ) ) {\n\n\t\t\t\tthis.depthNear = depthData.depthNear;\n\t\t\t\tthis.depthFar = depthData.depthFar;\n\n\t\t\t}\n\n\t\t\tthis.texture = texture;\n\n\t\t}\n\n\t}\n\n\tgetMesh( cameraXR ) {\n\n\t\tif ( this.texture !== null ) {\n\n\t\t\tif ( this.mesh === null ) {\n\n\t\t\t\tconst viewport = cameraXR.cameras[ 0 ].viewport;\n\t\t\t\tconst material = new ShaderMaterial( {\n\t\t\t\t\tvertexShader: _occlusion_vertex,\n\t\t\t\t\tfragmentShader: _occlusion_fragment,\n\t\t\t\t\tuniforms: {\n\t\t\t\t\t\tdepthColor: { value: this.texture },\n\t\t\t\t\t\tdepthWidth: { value: viewport.z },\n\t\t\t\t\t\tdepthHeight: { value: viewport.w }\n\t\t\t\t\t}\n\t\t\t\t} );\n\n\t\t\t\tthis.mesh = new Mesh( new PlaneGeometry( 20, 20 ), material );\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn this.mesh;\n\n\t}\n\n\treset() {\n\n\t\tthis.texture = null;\n\t\tthis.mesh = null;\n\n\t}\n\n}\n\nclass WebXRManager extends EventDispatcher {\n\n\tconstructor( renderer, gl ) {\n\n\t\tsuper();\n\n\t\tconst scope = this;\n\n\t\tlet session = null;\n\n\t\tlet framebufferScaleFactor = 1.0;\n\n\t\tlet referenceSpace = null;\n\t\tlet referenceSpaceType = 'local-floor';\n\t\t// Set default foveation to maximum.\n\t\tlet foveation = 1.0;\n\t\tlet customReferenceSpace = null;\n\n\t\tlet pose = null;\n\t\tlet glBinding = null;\n\t\tlet glProjLayer = null;\n\t\tlet glBaseLayer = null;\n\t\tlet xrFrame = null;\n\n\t\tconst depthSensing = new WebXRDepthSensing();\n\t\tconst attributes = gl.getContextAttributes();\n\n\t\tlet initialRenderTarget = null;\n\t\tlet newRenderTarget = null;\n\n\t\tconst controllers = [];\n\t\tconst controllerInputSources = [];\n\n\t\tconst currentSize = new Vector2();\n\t\tlet currentPixelRatio = null;\n\n\t\t//\n\n\t\tconst cameraL = new PerspectiveCamera();\n\t\tcameraL.layers.enable( 1 );\n\t\tcameraL.viewport = new Vector4();\n\n\t\tconst cameraR = new PerspectiveCamera();\n\t\tcameraR.layers.enable( 2 );\n\t\tcameraR.viewport = new Vector4();\n\n\t\tconst cameras = [ cameraL, cameraR ];\n\n\t\tconst cameraXR = new ArrayCamera();\n\t\tcameraXR.layers.enable( 1 );\n\t\tcameraXR.layers.enable( 2 );\n\n\t\tlet _currentDepthNear = null;\n\t\tlet _currentDepthFar = null;\n\n\t\t//\n\n\t\tthis.cameraAutoUpdate = true;\n\t\tthis.enabled = false;\n\n\t\tthis.isPresenting = false;\n\n\t\tthis.getController = function ( index ) {\n\n\t\t\tlet controller = controllers[ index ];\n\n\t\t\tif ( controller === undefined ) {\n\n\t\t\t\tcontroller = new WebXRController();\n\t\t\t\tcontrollers[ index ] = controller;\n\n\t\t\t}\n\n\t\t\treturn controller.getTargetRaySpace();\n\n\t\t};\n\n\t\tthis.getControllerGrip = function ( index ) {\n\n\t\t\tlet controller = controllers[ index ];\n\n\t\t\tif ( controller === undefined ) {\n\n\t\t\t\tcontroller = new WebXRController();\n\t\t\t\tcontrollers[ index ] = controller;\n\n\t\t\t}\n\n\t\t\treturn controller.getGripSpace();\n\n\t\t};\n\n\t\tthis.getHand = function ( index ) {\n\n\t\t\tlet controller = controllers[ index ];\n\n\t\t\tif ( controller === undefined ) {\n\n\t\t\t\tcontroller = new WebXRController();\n\t\t\t\tcontrollers[ index ] = controller;\n\n\t\t\t}\n\n\t\t\treturn controller.getHandSpace();\n\n\t\t};\n\n\t\t//\n\n\t\tfunction onSessionEvent( event ) {\n\n\t\t\tconst controllerIndex = controllerInputSources.indexOf( event.inputSource );\n\n\t\t\tif ( controllerIndex === - 1 ) {\n\n\t\t\t\treturn;\n\n\t\t\t}\n\n\t\t\tconst controller = controllers[ controllerIndex ];\n\n\t\t\tif ( controller !== undefined ) {\n\n\t\t\t\tcontroller.update( event.inputSource, event.frame, customReferenceSpace || referenceSpace );\n\t\t\t\tcontroller.dispatchEvent( { type: event.type, data: event.inputSource } );\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction onSessionEnd() {\n\n\t\t\tsession.removeEventListener( 'select', onSessionEvent );\n\t\t\tsession.removeEventListener( 'selectstart', onSessionEvent );\n\t\t\tsession.removeEventListener( 'selectend', onSessionEvent );\n\t\t\tsession.removeEventListener( 'squeeze', onSessionEvent );\n\t\t\tsession.removeEventListener( 'squeezestart', onSessionEvent );\n\t\t\tsession.removeEventListener( 'squeezeend', onSessionEvent );\n\t\t\tsession.removeEventListener( 'end', onSessionEnd );\n\t\t\tsession.removeEventListener( 'inputsourceschange', onInputSourcesChange );\n\n\t\t\tfor ( let i = 0; i < controllers.length; i ++ ) {\n\n\t\t\t\tconst inputSource = controllerInputSources[ i ];\n\n\t\t\t\tif ( inputSource === null ) continue;\n\n\t\t\t\tcontrollerInputSources[ i ] = null;\n\n\t\t\t\tcontrollers[ i ].disconnect( inputSource );\n\n\t\t\t}\n\n\t\t\t_currentDepthNear = null;\n\t\t\t_currentDepthFar = null;\n\n\t\t\tdepthSensing.reset();\n\n\t\t\t// restore framebuffer/rendering state\n\n\t\t\trenderer.setRenderTarget( initialRenderTarget );\n\n\t\t\tglBaseLayer = null;\n\t\t\tglProjLayer = null;\n\t\t\tglBinding = null;\n\t\t\tsession = null;\n\t\t\tnewRenderTarget = null;\n\n\t\t\t//\n\n\t\t\tanimation.stop();\n\n\t\t\tscope.isPresenting = false;\n\n\t\t\trenderer.setPixelRatio( currentPixelRatio );\n\t\t\trenderer.setSize( currentSize.width, currentSize.height, false );\n\n\t\t\tscope.dispatchEvent( { type: 'sessionend' } );\n\n\t\t}\n\n\t\tthis.setFramebufferScaleFactor = function ( value ) {\n\n\t\t\tframebufferScaleFactor = value;\n\n\t\t\tif ( scope.isPresenting === true ) {\n\n\t\t\t\tconsole.warn( 'THREE.WebXRManager: Cannot change framebuffer scale while presenting.' );\n\n\t\t\t}\n\n\t\t};\n\n\t\tthis.setReferenceSpaceType = function ( value ) {\n\n\t\t\treferenceSpaceType = value;\n\n\t\t\tif ( scope.isPresenting === true ) {\n\n\t\t\t\tconsole.warn( 'THREE.WebXRManager: Cannot change reference space type while presenting.' );\n\n\t\t\t}\n\n\t\t};\n\n\t\tthis.getReferenceSpace = function () {\n\n\t\t\treturn customReferenceSpace || referenceSpace;\n\n\t\t};\n\n\t\tthis.setReferenceSpace = function ( space ) {\n\n\t\t\tcustomReferenceSpace = space;\n\n\t\t};\n\n\t\tthis.getBaseLayer = function () {\n\n\t\t\treturn glProjLayer !== null ? glProjLayer : glBaseLayer;\n\n\t\t};\n\n\t\tthis.getBinding = function () {\n\n\t\t\treturn glBinding;\n\n\t\t};\n\n\t\tthis.getFrame = function () {\n\n\t\t\treturn xrFrame;\n\n\t\t};\n\n\t\tthis.getSession = function () {\n\n\t\t\treturn session;\n\n\t\t};\n\n\t\tthis.setSession = async function ( value ) {\n\n\t\t\tsession = value;\n\n\t\t\tif ( session !== null ) {\n\n\t\t\t\tinitialRenderTarget = renderer.getRenderTarget();\n\n\t\t\t\tsession.addEventListener( 'select', onSessionEvent );\n\t\t\t\tsession.addEventListener( 'selectstart', onSessionEvent );\n\t\t\t\tsession.addEventListener( 'selectend', onSessionEvent );\n\t\t\t\tsession.addEventListener( 'squeeze', onSessionEvent );\n\t\t\t\tsession.addEventListener( 'squeezestart', onSessionEvent );\n\t\t\t\tsession.addEventListener( 'squeezeend', onSessionEvent );\n\t\t\t\tsession.addEventListener( 'end', onSessionEnd );\n\t\t\t\tsession.addEventListener( 'inputsourceschange', onInputSourcesChange );\n\n\t\t\t\tif ( attributes.xrCompatible !== true ) {\n\n\t\t\t\t\tawait gl.makeXRCompatible();\n\n\t\t\t\t}\n\n\t\t\t\tcurrentPixelRatio = renderer.getPixelRatio();\n\t\t\t\trenderer.getSize( currentSize );\n\n\t\t\t\tif ( session.renderState.layers === undefined ) {\n\n\t\t\t\t\tconst layerInit = {\n\t\t\t\t\t\tantialias: attributes.antialias,\n\t\t\t\t\t\talpha: true,\n\t\t\t\t\t\tdepth: attributes.depth,\n\t\t\t\t\t\tstencil: attributes.stencil,\n\t\t\t\t\t\tframebufferScaleFactor: framebufferScaleFactor\n\t\t\t\t\t};\n\n\t\t\t\t\tglBaseLayer = new XRWebGLLayer( session, gl, layerInit );\n\n\t\t\t\t\tsession.updateRenderState( { baseLayer: glBaseLayer } );\n\n\t\t\t\t\trenderer.setPixelRatio( 1 );\n\t\t\t\t\trenderer.setSize( glBaseLayer.framebufferWidth, glBaseLayer.framebufferHeight, false );\n\n\t\t\t\t\tnewRenderTarget = new WebGLRenderTarget(\n\t\t\t\t\t\tglBaseLayer.framebufferWidth,\n\t\t\t\t\t\tglBaseLayer.framebufferHeight,\n\t\t\t\t\t\t{\n\t\t\t\t\t\t\tformat: RGBAFormat,\n\t\t\t\t\t\t\ttype: UnsignedByteType,\n\t\t\t\t\t\t\tcolorSpace: renderer.outputColorSpace,\n\t\t\t\t\t\t\tstencilBuffer: attributes.stencil\n\t\t\t\t\t\t}\n\t\t\t\t\t);\n\n\t\t\t\t} else {\n\n\t\t\t\t\tlet depthFormat = null;\n\t\t\t\t\tlet depthType = null;\n\t\t\t\t\tlet glDepthFormat = null;\n\n\t\t\t\t\tif ( attributes.depth ) {\n\n\t\t\t\t\t\tglDepthFormat = attributes.stencil ? gl.DEPTH24_STENCIL8 : gl.DEPTH_COMPONENT24;\n\t\t\t\t\t\tdepthFormat = attributes.stencil ? DepthStencilFormat : DepthFormat;\n\t\t\t\t\t\tdepthType = attributes.stencil ? UnsignedInt248Type : UnsignedIntType;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tconst projectionlayerInit = {\n\t\t\t\t\t\tcolorFormat: gl.RGBA8,\n\t\t\t\t\t\tdepthFormat: glDepthFormat,\n\t\t\t\t\t\tscaleFactor: framebufferScaleFactor\n\t\t\t\t\t};\n\n\t\t\t\t\tglBinding = new XRWebGLBinding( session, gl );\n\n\t\t\t\t\tglProjLayer = glBinding.createProjectionLayer( projectionlayerInit );\n\n\t\t\t\t\tsession.updateRenderState( { layers: [ glProjLayer ] } );\n\n\t\t\t\t\trenderer.setPixelRatio( 1 );\n\t\t\t\t\trenderer.setSize( glProjLayer.textureWidth, glProjLayer.textureHeight, false );\n\n\t\t\t\t\tnewRenderTarget = new WebGLRenderTarget(\n\t\t\t\t\t\tglProjLayer.textureWidth,\n\t\t\t\t\t\tglProjLayer.textureHeight,\n\t\t\t\t\t\t{\n\t\t\t\t\t\t\tformat: RGBAFormat,\n\t\t\t\t\t\t\ttype: UnsignedByteType,\n\t\t\t\t\t\t\tdepthTexture: new DepthTexture( glProjLayer.textureWidth, glProjLayer.textureHeight, depthType, undefined, undefined, undefined, undefined, undefined, undefined, depthFormat ),\n\t\t\t\t\t\t\tstencilBuffer: attributes.stencil,\n\t\t\t\t\t\t\tcolorSpace: renderer.outputColorSpace,\n\t\t\t\t\t\t\tsamples: attributes.antialias ? 4 : 0,\n\t\t\t\t\t\t\tresolveDepthBuffer: ( glProjLayer.ignoreDepthValues === false )\n\t\t\t\t\t\t} );\n\n\t\t\t\t}\n\n\t\t\t\tnewRenderTarget.isXRRenderTarget = true; // TODO Remove this when possible, see #23278\n\n\t\t\t\tthis.setFoveation( foveation );\n\n\t\t\t\tcustomReferenceSpace = null;\n\t\t\t\treferenceSpace = await session.requestReferenceSpace( referenceSpaceType );\n\n\t\t\t\tanimation.setContext( session );\n\t\t\t\tanimation.start();\n\n\t\t\t\tscope.isPresenting = true;\n\n\t\t\t\tscope.dispatchEvent( { type: 'sessionstart' } );\n\n\t\t\t}\n\n\t\t};\n\n\t\tthis.getEnvironmentBlendMode = function () {\n\n\t\t\tif ( session !== null ) {\n\n\t\t\t\treturn session.environmentBlendMode;\n\n\t\t\t}\n\n\t\t};\n\n\t\tfunction onInputSourcesChange( event ) {\n\n\t\t\t// Notify disconnected\n\n\t\t\tfor ( let i = 0; i < event.removed.length; i ++ ) {\n\n\t\t\t\tconst inputSource = event.removed[ i ];\n\t\t\t\tconst index = controllerInputSources.indexOf( inputSource );\n\n\t\t\t\tif ( index >= 0 ) {\n\n\t\t\t\t\tcontrollerInputSources[ index ] = null;\n\t\t\t\t\tcontrollers[ index ].disconnect( inputSource );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// Notify connected\n\n\t\t\tfor ( let i = 0; i < event.added.length; i ++ ) {\n\n\t\t\t\tconst inputSource = event.added[ i ];\n\n\t\t\t\tlet controllerIndex = controllerInputSources.indexOf( inputSource );\n\n\t\t\t\tif ( controllerIndex === - 1 ) {\n\n\t\t\t\t\t// Assign input source a controller that currently has no input source\n\n\t\t\t\t\tfor ( let i = 0; i < controllers.length; i ++ ) {\n\n\t\t\t\t\t\tif ( i >= controllerInputSources.length ) {\n\n\t\t\t\t\t\t\tcontrollerInputSources.push( inputSource );\n\t\t\t\t\t\t\tcontrollerIndex = i;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\t} else if ( controllerInputSources[ i ] === null ) {\n\n\t\t\t\t\t\t\tcontrollerInputSources[ i ] = inputSource;\n\t\t\t\t\t\t\tcontrollerIndex = i;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t\t// If all controllers do currently receive input we ignore new ones\n\n\t\t\t\t\tif ( controllerIndex === - 1 ) break;\n\n\t\t\t\t}\n\n\t\t\t\tconst controller = controllers[ controllerIndex ];\n\n\t\t\t\tif ( controller ) {\n\n\t\t\t\t\tcontroller.connect( inputSource );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\t//\n\n\t\tconst cameraLPos = new Vector3();\n\t\tconst cameraRPos = new Vector3();\n\n\t\t/**\n\t\t * Assumes 2 cameras that are parallel and share an X-axis, and that\n\t\t * the cameras' projection and world matrices have already been set.\n\t\t * And that near and far planes are identical for both cameras.\n\t\t * Visualization of this technique: https://computergraphics.stackexchange.com/a/4765\n\t\t */\n\t\tfunction setProjectionFromUnion( camera, cameraL, cameraR ) {\n\n\t\t\tcameraLPos.setFromMatrixPosition( cameraL.matrixWorld );\n\t\t\tcameraRPos.setFromMatrixPosition( cameraR.matrixWorld );\n\n\t\t\tconst ipd = cameraLPos.distanceTo( cameraRPos );\n\n\t\t\tconst projL = cameraL.projectionMatrix.elements;\n\t\t\tconst projR = cameraR.projectionMatrix.elements;\n\n\t\t\t// VR systems will have identical far and near planes, and\n\t\t\t// most likely identical top and bottom frustum extents.\n\t\t\t// Use the left camera for these values.\n\t\t\tconst near = projL[ 14 ] / ( projL[ 10 ] - 1 );\n\t\t\tconst far = projL[ 14 ] / ( projL[ 10 ] + 1 );\n\t\t\tconst topFov = ( projL[ 9 ] + 1 ) / projL[ 5 ];\n\t\t\tconst bottomFov = ( projL[ 9 ] - 1 ) / projL[ 5 ];\n\n\t\t\tconst leftFov = ( projL[ 8 ] - 1 ) / projL[ 0 ];\n\t\t\tconst rightFov = ( projR[ 8 ] + 1 ) / projR[ 0 ];\n\t\t\tconst left = near * leftFov;\n\t\t\tconst right = near * rightFov;\n\n\t\t\t// Calculate the new camera's position offset from the\n\t\t\t// left camera. xOffset should be roughly half `ipd`.\n\t\t\tconst zOffset = ipd / ( - leftFov + rightFov );\n\t\t\tconst xOffset = zOffset * - leftFov;\n\n\t\t\t// TODO: Better way to apply this offset?\n\t\t\tcameraL.matrixWorld.decompose( camera.position, camera.quaternion, camera.scale );\n\t\t\tcamera.translateX( xOffset );\n\t\t\tcamera.translateZ( zOffset );\n\t\t\tcamera.matrixWorld.compose( camera.position, camera.quaternion, camera.scale );\n\t\t\tcamera.matrixWorldInverse.copy( camera.matrixWorld ).invert();\n\n\t\t\t// Find the union of the frustum values of the cameras and scale\n\t\t\t// the values so that the near plane's position does not change in world space,\n\t\t\t// although must now be relative to the new union camera.\n\t\t\tconst near2 = near + zOffset;\n\t\t\tconst far2 = far + zOffset;\n\t\t\tconst left2 = left - xOffset;\n\t\t\tconst right2 = right + ( ipd - xOffset );\n\t\t\tconst top2 = topFov * far / far2 * near2;\n\t\t\tconst bottom2 = bottomFov * far / far2 * near2;\n\n\t\t\tcamera.projectionMatrix.makePerspective( left2, right2, top2, bottom2, near2, far2 );\n\t\t\tcamera.projectionMatrixInverse.copy( camera.projectionMatrix ).invert();\n\n\t\t}\n\n\t\tfunction updateCamera( camera, parent ) {\n\n\t\t\tif ( parent === null ) {\n\n\t\t\t\tcamera.matrixWorld.copy( camera.matrix );\n\n\t\t\t} else {\n\n\t\t\t\tcamera.matrixWorld.multiplyMatrices( parent.matrixWorld, camera.matrix );\n\n\t\t\t}\n\n\t\t\tcamera.matrixWorldInverse.copy( camera.matrixWorld ).invert();\n\n\t\t}\n\n\t\tthis.updateCamera = function ( camera ) {\n\n\t\t\tif ( session === null ) return;\n\n\t\t\tif ( depthSensing.texture !== null ) {\n\n\t\t\t\tcamera.near = depthSensing.depthNear;\n\t\t\t\tcamera.far = depthSensing.depthFar;\n\n\t\t\t}\n\n\t\t\tcameraXR.near = cameraR.near = cameraL.near = camera.near;\n\t\t\tcameraXR.far = cameraR.far = cameraL.far = camera.far;\n\n\t\t\tif ( _currentDepthNear !== cameraXR.near || _currentDepthFar !== cameraXR.far ) {\n\n\t\t\t\t// Note that the new renderState won't apply until the next frame. See #18320\n\n\t\t\t\tsession.updateRenderState( {\n\t\t\t\t\tdepthNear: cameraXR.near,\n\t\t\t\t\tdepthFar: cameraXR.far\n\t\t\t\t} );\n\n\t\t\t\t_currentDepthNear = cameraXR.near;\n\t\t\t\t_currentDepthFar = cameraXR.far;\n\n\t\t\t\tcameraL.near = _currentDepthNear;\n\t\t\t\tcameraL.far = _currentDepthFar;\n\t\t\t\tcameraR.near = _currentDepthNear;\n\t\t\t\tcameraR.far = _currentDepthFar;\n\n\t\t\t\tcameraL.updateProjectionMatrix();\n\t\t\t\tcameraR.updateProjectionMatrix();\n\t\t\t\tcamera.updateProjectionMatrix();\n\n\t\t\t}\n\n\t\t\tconst parent = camera.parent;\n\t\t\tconst cameras = cameraXR.cameras;\n\n\t\t\tupdateCamera( cameraXR, parent );\n\n\t\t\tfor ( let i = 0; i < cameras.length; i ++ ) {\n\n\t\t\t\tupdateCamera( cameras[ i ], parent );\n\n\t\t\t}\n\n\t\t\t// update projection matrix for proper view frustum culling\n\n\t\t\tif ( cameras.length === 2 ) {\n\n\t\t\t\tsetProjectionFromUnion( cameraXR, cameraL, cameraR );\n\n\t\t\t} else {\n\n\t\t\t\t// assume single camera setup (AR)\n\n\t\t\t\tcameraXR.projectionMatrix.copy( cameraL.projectionMatrix );\n\n\t\t\t}\n\n\t\t\t// update user camera and its children\n\n\t\t\tupdateUserCamera( camera, cameraXR, parent );\n\n\t\t};\n\n\t\tfunction updateUserCamera( camera, cameraXR, parent ) {\n\n\t\t\tif ( parent === null ) {\n\n\t\t\t\tcamera.matrix.copy( cameraXR.matrixWorld );\n\n\t\t\t} else {\n\n\t\t\t\tcamera.matrix.copy( parent.matrixWorld );\n\t\t\t\tcamera.matrix.invert();\n\t\t\t\tcamera.matrix.multiply( cameraXR.matrixWorld );\n\n\t\t\t}\n\n\t\t\tcamera.matrix.decompose( camera.position, camera.quaternion, camera.scale );\n\t\t\tcamera.updateMatrixWorld( true );\n\n\t\t\tcamera.projectionMatrix.copy( cameraXR.projectionMatrix );\n\t\t\tcamera.projectionMatrixInverse.copy( cameraXR.projectionMatrixInverse );\n\n\t\t\tif ( camera.isPerspectiveCamera ) {\n\n\t\t\t\tcamera.fov = RAD2DEG * 2 * Math.atan( 1 / camera.projectionMatrix.elements[ 5 ] );\n\t\t\t\tcamera.zoom = 1;\n\n\t\t\t}\n\n\t\t}\n\n\t\tthis.getCamera = function () {\n\n\t\t\treturn cameraXR;\n\n\t\t};\n\n\t\tthis.getFoveation = function () {\n\n\t\t\tif ( glProjLayer === null && glBaseLayer === null ) {\n\n\t\t\t\treturn undefined;\n\n\t\t\t}\n\n\t\t\treturn foveation;\n\n\t\t};\n\n\t\tthis.setFoveation = function ( value ) {\n\n\t\t\t// 0 = no foveation = full resolution\n\t\t\t// 1 = maximum foveation = the edges render at lower resolution\n\n\t\t\tfoveation = value;\n\n\t\t\tif ( glProjLayer !== null ) {\n\n\t\t\t\tglProjLayer.fixedFoveation = value;\n\n\t\t\t}\n\n\t\t\tif ( glBaseLayer !== null && glBaseLayer.fixedFoveation !== undefined ) {\n\n\t\t\t\tglBaseLayer.fixedFoveation = value;\n\n\t\t\t}\n\n\t\t};\n\n\t\tthis.hasDepthSensing = function () {\n\n\t\t\treturn depthSensing.texture !== null;\n\n\t\t};\n\n\t\tthis.getDepthSensingMesh = function () {\n\n\t\t\treturn depthSensing.getMesh( cameraXR );\n\n\t\t};\n\n\t\t// Animation Loop\n\n\t\tlet onAnimationFrameCallback = null;\n\n\t\tfunction onAnimationFrame( time, frame ) {\n\n\t\t\tpose = frame.getViewerPose( customReferenceSpace || referenceSpace );\n\t\t\txrFrame = frame;\n\n\t\t\tif ( pose !== null ) {\n\n\t\t\t\tconst views = pose.views;\n\n\t\t\t\tif ( glBaseLayer !== null ) {\n\n\t\t\t\t\trenderer.setRenderTargetFramebuffer( newRenderTarget, glBaseLayer.framebuffer );\n\t\t\t\t\trenderer.setRenderTarget( newRenderTarget );\n\n\t\t\t\t}\n\n\t\t\t\tlet cameraXRNeedsUpdate = false;\n\n\t\t\t\t// check if it's necessary to rebuild cameraXR's camera list\n\n\t\t\t\tif ( views.length !== cameraXR.cameras.length ) {\n\n\t\t\t\t\tcameraXR.cameras.length = 0;\n\t\t\t\t\tcameraXRNeedsUpdate = true;\n\n\t\t\t\t}\n\n\t\t\t\tfor ( let i = 0; i < views.length; i ++ ) {\n\n\t\t\t\t\tconst view = views[ i ];\n\n\t\t\t\t\tlet viewport = null;\n\n\t\t\t\t\tif ( glBaseLayer !== null ) {\n\n\t\t\t\t\t\tviewport = glBaseLayer.getViewport( view );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tconst glSubImage = glBinding.getViewSubImage( glProjLayer, view );\n\t\t\t\t\t\tviewport = glSubImage.viewport;\n\n\t\t\t\t\t\t// For side-by-side projection, we only produce a single texture for both eyes.\n\t\t\t\t\t\tif ( i === 0 ) {\n\n\t\t\t\t\t\t\trenderer.setRenderTargetTextures(\n\t\t\t\t\t\t\t\tnewRenderTarget,\n\t\t\t\t\t\t\t\tglSubImage.colorTexture,\n\t\t\t\t\t\t\t\tglProjLayer.ignoreDepthValues ? undefined : glSubImage.depthStencilTexture );\n\n\t\t\t\t\t\t\trenderer.setRenderTarget( newRenderTarget );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t\tlet camera = cameras[ i ];\n\n\t\t\t\t\tif ( camera === undefined ) {\n\n\t\t\t\t\t\tcamera = new PerspectiveCamera();\n\t\t\t\t\t\tcamera.layers.enable( i );\n\t\t\t\t\t\tcamera.viewport = new Vector4();\n\t\t\t\t\t\tcameras[ i ] = camera;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tcamera.matrix.fromArray( view.transform.matrix );\n\t\t\t\t\tcamera.matrix.decompose( camera.position, camera.quaternion, camera.scale );\n\t\t\t\t\tcamera.projectionMatrix.fromArray( view.projectionMatrix );\n\t\t\t\t\tcamera.projectionMatrixInverse.copy( camera.projectionMatrix ).invert();\n\t\t\t\t\tcamera.viewport.set( viewport.x, viewport.y, viewport.width, viewport.height );\n\n\t\t\t\t\tif ( i === 0 ) {\n\n\t\t\t\t\t\tcameraXR.matrix.copy( camera.matrix );\n\t\t\t\t\t\tcameraXR.matrix.decompose( cameraXR.position, cameraXR.quaternion, cameraXR.scale );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( cameraXRNeedsUpdate === true ) {\n\n\t\t\t\t\t\tcameraXR.cameras.push( camera );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\t//\n\n\t\t\t\tconst enabledFeatures = session.enabledFeatures;\n\n\t\t\t\tif ( enabledFeatures && enabledFeatures.includes( 'depth-sensing' ) ) {\n\n\t\t\t\t\tconst depthData = glBinding.getDepthInformation( views[ 0 ] );\n\n\t\t\t\t\tif ( depthData && depthData.isValid && depthData.texture ) {\n\n\t\t\t\t\t\tdepthSensing.init( renderer, depthData, session.renderState );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t//\n\n\t\t\tfor ( let i = 0; i < controllers.length; i ++ ) {\n\n\t\t\t\tconst inputSource = controllerInputSources[ i ];\n\t\t\t\tconst controller = controllers[ i ];\n\n\t\t\t\tif ( inputSource !== null && controller !== undefined ) {\n\n\t\t\t\t\tcontroller.update( inputSource, frame, customReferenceSpace || referenceSpace );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tif ( onAnimationFrameCallback ) onAnimationFrameCallback( time, frame );\n\n\t\t\tif ( frame.detectedPlanes ) {\n\n\t\t\t\tscope.dispatchEvent( { type: 'planesdetected', data: frame } );\n\n\t\t\t}\n\n\t\t\txrFrame = null;\n\n\t\t}\n\n\t\tconst animation = new WebGLAnimation();\n\n\t\tanimation.setAnimationLoop( onAnimationFrame );\n\n\t\tthis.setAnimationLoop = function ( callback ) {\n\n\t\t\tonAnimationFrameCallback = callback;\n\n\t\t};\n\n\t\tthis.dispose = function () {};\n\n\t}\n\n}\n\nconst _e1 = /*@__PURE__*/ new Euler();\nconst _m1 = /*@__PURE__*/ new Matrix4();\n\nfunction WebGLMaterials( renderer, properties ) {\n\n\tfunction refreshTransformUniform( map, uniform ) {\n\n\t\tif ( map.matrixAutoUpdate === true ) {\n\n\t\t\tmap.updateMatrix();\n\n\t\t}\n\n\t\tuniform.value.copy( map.matrix );\n\n\t}\n\n\tfunction refreshFogUniforms( uniforms, fog ) {\n\n\t\tfog.color.getRGB( uniforms.fogColor.value, getUnlitUniformColorSpace( renderer ) );\n\n\t\tif ( fog.isFog ) {\n\n\t\t\tuniforms.fogNear.value = fog.near;\n\t\t\tuniforms.fogFar.value = fog.far;\n\n\t\t} else if ( fog.isFogExp2 ) {\n\n\t\t\tuniforms.fogDensity.value = fog.density;\n\n\t\t}\n\n\t}\n\n\tfunction refreshMaterialUniforms( uniforms, material, pixelRatio, height, transmissionRenderTarget ) {\n\n\t\tif ( material.isMeshBasicMaterial ) {\n\n\t\t\trefreshUniformsCommon( uniforms, material );\n\n\t\t} else if ( material.isMeshLambertMaterial ) {\n\n\t\t\trefreshUniformsCommon( uniforms, material );\n\n\t\t} else if ( material.isMeshToonMaterial ) {\n\n\t\t\trefreshUniformsCommon( uniforms, material );\n\t\t\trefreshUniformsToon( uniforms, material );\n\n\t\t} else if ( material.isMeshPhongMaterial ) {\n\n\t\t\trefreshUniformsCommon( uniforms, material );\n\t\t\trefreshUniformsPhong( uniforms, material );\n\n\t\t} else if ( material.isMeshStandardMaterial ) {\n\n\t\t\trefreshUniformsCommon( uniforms, material );\n\t\t\trefreshUniformsStandard( uniforms, material );\n\n\t\t\tif ( material.isMeshPhysicalMaterial ) {\n\n\t\t\t\trefreshUniformsPhysical( uniforms, material, transmissionRenderTarget );\n\n\t\t\t}\n\n\t\t} else if ( material.isMeshMatcapMaterial ) {\n\n\t\t\trefreshUniformsCommon( uniforms, material );\n\t\t\trefreshUniformsMatcap( uniforms, material );\n\n\t\t} else if ( material.isMeshDepthMaterial ) {\n\n\t\t\trefreshUniformsCommon( uniforms, material );\n\n\t\t} else if ( material.isMeshDistanceMaterial ) {\n\n\t\t\trefreshUniformsCommon( uniforms, material );\n\t\t\trefreshUniformsDistance( uniforms, material );\n\n\t\t} else if ( material.isMeshNormalMaterial ) {\n\n\t\t\trefreshUniformsCommon( uniforms, material );\n\n\t\t} else if ( material.isLineBasicMaterial ) {\n\n\t\t\trefreshUniformsLine( uniforms, material );\n\n\t\t\tif ( material.isLineDashedMaterial ) {\n\n\t\t\t\trefreshUniformsDash( uniforms, material );\n\n\t\t\t}\n\n\t\t} else if ( material.isPointsMaterial ) {\n\n\t\t\trefreshUniformsPoints( uniforms, material, pixelRatio, height );\n\n\t\t} else if ( material.isSpriteMaterial ) {\n\n\t\t\trefreshUniformsSprites( uniforms, material );\n\n\t\t} else if ( material.isShadowMaterial ) {\n\n\t\t\tuniforms.color.value.copy( material.color );\n\t\t\tuniforms.opacity.value = material.opacity;\n\n\t\t} else if ( material.isShaderMaterial ) {\n\n\t\t\tmaterial.uniformsNeedUpdate = false; // #15581\n\n\t\t}\n\n\t}\n\n\tfunction refreshUniformsCommon( uniforms, material ) {\n\n\t\tuniforms.opacity.value = material.opacity;\n\n\t\tif ( material.color ) {\n\n\t\t\tuniforms.diffuse.value.copy( material.color );\n\n\t\t}\n\n\t\tif ( material.emissive ) {\n\n\t\t\tuniforms.emissive.value.copy( material.emissive ).multiplyScalar( material.emissiveIntensity );\n\n\t\t}\n\n\t\tif ( material.map ) {\n\n\t\t\tuniforms.map.value = material.map;\n\n\t\t\trefreshTransformUniform( material.map, uniforms.mapTransform );\n\n\t\t}\n\n\t\tif ( material.alphaMap ) {\n\n\t\t\tuniforms.alphaMap.value = material.alphaMap;\n\n\t\t\trefreshTransformUniform( material.alphaMap, uniforms.alphaMapTransform );\n\n\t\t}\n\n\t\tif ( material.bumpMap ) {\n\n\t\t\tuniforms.bumpMap.value = material.bumpMap;\n\n\t\t\trefreshTransformUniform( material.bumpMap, uniforms.bumpMapTransform );\n\n\t\t\tuniforms.bumpScale.value = material.bumpScale;\n\n\t\t\tif ( material.side === BackSide ) {\n\n\t\t\t\tuniforms.bumpScale.value *= - 1;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( material.normalMap ) {\n\n\t\t\tuniforms.normalMap.value = material.normalMap;\n\n\t\t\trefreshTransformUniform( material.normalMap, uniforms.normalMapTransform );\n\n\t\t\tuniforms.normalScale.value.copy( material.normalScale );\n\n\t\t\tif ( material.side === BackSide ) {\n\n\t\t\t\tuniforms.normalScale.value.negate();\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( material.displacementMap ) {\n\n\t\t\tuniforms.displacementMap.value = material.displacementMap;\n\n\t\t\trefreshTransformUniform( material.displacementMap, uniforms.displacementMapTransform );\n\n\t\t\tuniforms.displacementScale.value = material.displacementScale;\n\t\t\tuniforms.displacementBias.value = material.displacementBias;\n\n\t\t}\n\n\t\tif ( material.emissiveMap ) {\n\n\t\t\tuniforms.emissiveMap.value = material.emissiveMap;\n\n\t\t\trefreshTransformUniform( material.emissiveMap, uniforms.emissiveMapTransform );\n\n\t\t}\n\n\t\tif ( material.specularMap ) {\n\n\t\t\tuniforms.specularMap.value = material.specularMap;\n\n\t\t\trefreshTransformUniform( material.specularMap, uniforms.specularMapTransform );\n\n\t\t}\n\n\t\tif ( material.alphaTest > 0 ) {\n\n\t\t\tuniforms.alphaTest.value = material.alphaTest;\n\n\t\t}\n\n\t\tconst materialProperties = properties.get( material );\n\n\t\tconst envMap = materialProperties.envMap;\n\t\tconst envMapRotation = materialProperties.envMapRotation;\n\n\t\tif ( envMap ) {\n\n\t\t\tuniforms.envMap.value = envMap;\n\n\t\t\t_e1.copy( envMapRotation );\n\n\t\t\t// accommodate left-handed frame\n\t\t\t_e1.x *= - 1; _e1.y *= - 1; _e1.z *= - 1;\n\n\t\t\tif ( envMap.isCubeTexture && envMap.isRenderTargetTexture === false ) {\n\n\t\t\t\t// environment maps which are not cube render targets or PMREMs follow a different convention\n\t\t\t\t_e1.y *= - 1;\n\t\t\t\t_e1.z *= - 1;\n\n\t\t\t}\n\n\t\t\tuniforms.envMapRotation.value.setFromMatrix4( _m1.makeRotationFromEuler( _e1 ) );\n\n\t\t\tuniforms.flipEnvMap.value = ( envMap.isCubeTexture && envMap.isRenderTargetTexture === false ) ? - 1 : 1;\n\n\t\t\tuniforms.reflectivity.value = material.reflectivity;\n\t\t\tuniforms.ior.value = material.ior;\n\t\t\tuniforms.refractionRatio.value = material.refractionRatio;\n\n\t\t}\n\n\t\tif ( material.lightMap ) {\n\n\t\t\tuniforms.lightMap.value = material.lightMap;\n\t\t\tuniforms.lightMapIntensity.value = material.lightMapIntensity;\n\n\t\t\trefreshTransformUniform( material.lightMap, uniforms.lightMapTransform );\n\n\t\t}\n\n\t\tif ( material.aoMap ) {\n\n\t\t\tuniforms.aoMap.value = material.aoMap;\n\t\t\tuniforms.aoMapIntensity.value = material.aoMapIntensity;\n\n\t\t\trefreshTransformUniform( material.aoMap, uniforms.aoMapTransform );\n\n\t\t}\n\n\t}\n\n\tfunction refreshUniformsLine( uniforms, material ) {\n\n\t\tuniforms.diffuse.value.copy( material.color );\n\t\tuniforms.opacity.value = material.opacity;\n\n\t\tif ( material.map ) {\n\n\t\t\tuniforms.map.value = material.map;\n\n\t\t\trefreshTransformUniform( material.map, uniforms.mapTransform );\n\n\t\t}\n\n\t}\n\n\tfunction refreshUniformsDash( uniforms, material ) {\n\n\t\tuniforms.dashSize.value = material.dashSize;\n\t\tuniforms.totalSize.value = material.dashSize + material.gapSize;\n\t\tuniforms.scale.value = material.scale;\n\n\t}\n\n\tfunction refreshUniformsPoints( uniforms, material, pixelRatio, height ) {\n\n\t\tuniforms.diffuse.value.copy( material.color );\n\t\tuniforms.opacity.value = material.opacity;\n\t\tuniforms.size.value = material.size * pixelRatio;\n\t\tuniforms.scale.value = height * 0.5;\n\n\t\tif ( material.map ) {\n\n\t\t\tuniforms.map.value = material.map;\n\n\t\t\trefreshTransformUniform( material.map, uniforms.uvTransform );\n\n\t\t}\n\n\t\tif ( material.alphaMap ) {\n\n\t\t\tuniforms.alphaMap.value = material.alphaMap;\n\n\t\t\trefreshTransformUniform( material.alphaMap, uniforms.alphaMapTransform );\n\n\t\t}\n\n\t\tif ( material.alphaTest > 0 ) {\n\n\t\t\tuniforms.alphaTest.value = material.alphaTest;\n\n\t\t}\n\n\t}\n\n\tfunction refreshUniformsSprites( uniforms, material ) {\n\n\t\tuniforms.diffuse.value.copy( material.color );\n\t\tuniforms.opacity.value = material.opacity;\n\t\tuniforms.rotation.value = material.rotation;\n\n\t\tif ( material.map ) {\n\n\t\t\tuniforms.map.value = material.map;\n\n\t\t\trefreshTransformUniform( material.map, uniforms.mapTransform );\n\n\t\t}\n\n\t\tif ( material.alphaMap ) {\n\n\t\t\tuniforms.alphaMap.value = material.alphaMap;\n\n\t\t\trefreshTransformUniform( material.alphaMap, uniforms.alphaMapTransform );\n\n\t\t}\n\n\t\tif ( material.alphaTest > 0 ) {\n\n\t\t\tuniforms.alphaTest.value = material.alphaTest;\n\n\t\t}\n\n\t}\n\n\tfunction refreshUniformsPhong( uniforms, material ) {\n\n\t\tuniforms.specular.value.copy( material.specular );\n\t\tuniforms.shininess.value = Math.max( material.shininess, 1e-4 ); // to prevent pow( 0.0, 0.0 )\n\n\t}\n\n\tfunction refreshUniformsToon( uniforms, material ) {\n\n\t\tif ( material.gradientMap ) {\n\n\t\t\tuniforms.gradientMap.value = material.gradientMap;\n\n\t\t}\n\n\t}\n\n\tfunction refreshUniformsStandard( uniforms, material ) {\n\n\t\tuniforms.metalness.value = material.metalness;\n\n\t\tif ( material.metalnessMap ) {\n\n\t\t\tuniforms.metalnessMap.value = material.metalnessMap;\n\n\t\t\trefreshTransformUniform( material.metalnessMap, uniforms.metalnessMapTransform );\n\n\t\t}\n\n\t\tuniforms.roughness.value = material.roughness;\n\n\t\tif ( material.roughnessMap ) {\n\n\t\t\tuniforms.roughnessMap.value = material.roughnessMap;\n\n\t\t\trefreshTransformUniform( material.roughnessMap, uniforms.roughnessMapTransform );\n\n\t\t}\n\n\t\tif ( material.envMap ) {\n\n\t\t\t//uniforms.envMap.value = material.envMap; // part of uniforms common\n\n\t\t\tuniforms.envMapIntensity.value = material.envMapIntensity;\n\n\t\t}\n\n\t}\n\n\tfunction refreshUniformsPhysical( uniforms, material, transmissionRenderTarget ) {\n\n\t\tuniforms.ior.value = material.ior; // also part of uniforms common\n\n\t\tif ( material.sheen > 0 ) {\n\n\t\t\tuniforms.sheenColor.value.copy( material.sheenColor ).multiplyScalar( material.sheen );\n\n\t\t\tuniforms.sheenRoughness.value = material.sheenRoughness;\n\n\t\t\tif ( material.sheenColorMap ) {\n\n\t\t\t\tuniforms.sheenColorMap.value = material.sheenColorMap;\n\n\t\t\t\trefreshTransformUniform( material.sheenColorMap, uniforms.sheenColorMapTransform );\n\n\t\t\t}\n\n\t\t\tif ( material.sheenRoughnessMap ) {\n\n\t\t\t\tuniforms.sheenRoughnessMap.value = material.sheenRoughnessMap;\n\n\t\t\t\trefreshTransformUniform( material.sheenRoughnessMap, uniforms.sheenRoughnessMapTransform );\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( material.clearcoat > 0 ) {\n\n\t\t\tuniforms.clearcoat.value = material.clearcoat;\n\t\t\tuniforms.clearcoatRoughness.value = material.clearcoatRoughness;\n\n\t\t\tif ( material.clearcoatMap ) {\n\n\t\t\t\tuniforms.clearcoatMap.value = material.clearcoatMap;\n\n\t\t\t\trefreshTransformUniform( material.clearcoatMap, uniforms.clearcoatMapTransform );\n\n\t\t\t}\n\n\t\t\tif ( material.clearcoatRoughnessMap ) {\n\n\t\t\t\tuniforms.clearcoatRoughnessMap.value = material.clearcoatRoughnessMap;\n\n\t\t\t\trefreshTransformUniform( material.clearcoatRoughnessMap, uniforms.clearcoatRoughnessMapTransform );\n\n\t\t\t}\n\n\t\t\tif ( material.clearcoatNormalMap ) {\n\n\t\t\t\tuniforms.clearcoatNormalMap.value = material.clearcoatNormalMap;\n\n\t\t\t\trefreshTransformUniform( material.clearcoatNormalMap, uniforms.clearcoatNormalMapTransform );\n\n\t\t\t\tuniforms.clearcoatNormalScale.value.copy( material.clearcoatNormalScale );\n\n\t\t\t\tif ( material.side === BackSide ) {\n\n\t\t\t\t\tuniforms.clearcoatNormalScale.value.negate();\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( material.dispersion > 0 ) {\n\n\t\t\tuniforms.dispersion.value = material.dispersion;\n\n\t\t}\n\n\t\tif ( material.iridescence > 0 ) {\n\n\t\t\tuniforms.iridescence.value = material.iridescence;\n\t\t\tuniforms.iridescenceIOR.value = material.iridescenceIOR;\n\t\t\tuniforms.iridescenceThicknessMinimum.value = material.iridescenceThicknessRange[ 0 ];\n\t\t\tuniforms.iridescenceThicknessMaximum.value = material.iridescenceThicknessRange[ 1 ];\n\n\t\t\tif ( material.iridescenceMap ) {\n\n\t\t\t\tuniforms.iridescenceMap.value = material.iridescenceMap;\n\n\t\t\t\trefreshTransformUniform( material.iridescenceMap, uniforms.iridescenceMapTransform );\n\n\t\t\t}\n\n\t\t\tif ( material.iridescenceThicknessMap ) {\n\n\t\t\t\tuniforms.iridescenceThicknessMap.value = material.iridescenceThicknessMap;\n\n\t\t\t\trefreshTransformUniform( material.iridescenceThicknessMap, uniforms.iridescenceThicknessMapTransform );\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( material.transmission > 0 ) {\n\n\t\t\tuniforms.transmission.value = material.transmission;\n\t\t\tuniforms.transmissionSamplerMap.value = transmissionRenderTarget.texture;\n\t\t\tuniforms.transmissionSamplerSize.value.set( transmissionRenderTarget.width, transmissionRenderTarget.height );\n\n\t\t\tif ( material.transmissionMap ) {\n\n\t\t\t\tuniforms.transmissionMap.value = material.transmissionMap;\n\n\t\t\t\trefreshTransformUniform( material.transmissionMap, uniforms.transmissionMapTransform );\n\n\t\t\t}\n\n\t\t\tuniforms.thickness.value = material.thickness;\n\n\t\t\tif ( material.thicknessMap ) {\n\n\t\t\t\tuniforms.thicknessMap.value = material.thicknessMap;\n\n\t\t\t\trefreshTransformUniform( material.thicknessMap, uniforms.thicknessMapTransform );\n\n\t\t\t}\n\n\t\t\tuniforms.attenuationDistance.value = material.attenuationDistance;\n\t\t\tuniforms.attenuationColor.value.copy( material.attenuationColor );\n\n\t\t}\n\n\t\tif ( material.anisotropy > 0 ) {\n\n\t\t\tuniforms.anisotropyVector.value.set( material.anisotropy * Math.cos( material.anisotropyRotation ), material.anisotropy * Math.sin( material.anisotropyRotation ) );\n\n\t\t\tif ( material.anisotropyMap ) {\n\n\t\t\t\tuniforms.anisotropyMap.value = material.anisotropyMap;\n\n\t\t\t\trefreshTransformUniform( material.anisotropyMap, uniforms.anisotropyMapTransform );\n\n\t\t\t}\n\n\t\t}\n\n\t\tuniforms.specularIntensity.value = material.specularIntensity;\n\t\tuniforms.specularColor.value.copy( material.specularColor );\n\n\t\tif ( material.specularColorMap ) {\n\n\t\t\tuniforms.specularColorMap.value = material.specularColorMap;\n\n\t\t\trefreshTransformUniform( material.specularColorMap, uniforms.specularColorMapTransform );\n\n\t\t}\n\n\t\tif ( material.specularIntensityMap ) {\n\n\t\t\tuniforms.specularIntensityMap.value = material.specularIntensityMap;\n\n\t\t\trefreshTransformUniform( material.specularIntensityMap, uniforms.specularIntensityMapTransform );\n\n\t\t}\n\n\t}\n\n\tfunction refreshUniformsMatcap( uniforms, material ) {\n\n\t\tif ( material.matcap ) {\n\n\t\t\tuniforms.matcap.value = material.matcap;\n\n\t\t}\n\n\t}\n\n\tfunction refreshUniformsDistance( uniforms, material ) {\n\n\t\tconst light = properties.get( material ).light;\n\n\t\tuniforms.referencePosition.value.setFromMatrixPosition( light.matrixWorld );\n\t\tuniforms.nearDistance.value = light.shadow.camera.near;\n\t\tuniforms.farDistance.value = light.shadow.camera.far;\n\n\t}\n\n\treturn {\n\t\trefreshFogUniforms: refreshFogUniforms,\n\t\trefreshMaterialUniforms: refreshMaterialUniforms\n\t};\n\n}\n\nfunction WebGLUniformsGroups( gl, info, capabilities, state ) {\n\n\tlet buffers = {};\n\tlet updateList = {};\n\tlet allocatedBindingPoints = [];\n\n\tconst maxBindingPoints = gl.getParameter( gl.MAX_UNIFORM_BUFFER_BINDINGS ); // binding points are global whereas block indices are per shader program\n\n\tfunction bind( uniformsGroup, program ) {\n\n\t\tconst webglProgram = program.program;\n\t\tstate.uniformBlockBinding( uniformsGroup, webglProgram );\n\n\t}\n\n\tfunction update( uniformsGroup, program ) {\n\n\t\tlet buffer = buffers[ uniformsGroup.id ];\n\n\t\tif ( buffer === undefined ) {\n\n\t\t\tprepareUniformsGroup( uniformsGroup );\n\n\t\t\tbuffer = createBuffer( uniformsGroup );\n\t\t\tbuffers[ uniformsGroup.id ] = buffer;\n\n\t\t\tuniformsGroup.addEventListener( 'dispose', onUniformsGroupsDispose );\n\n\t\t}\n\n\t\t// ensure to update the binding points/block indices mapping for this program\n\n\t\tconst webglProgram = program.program;\n\t\tstate.updateUBOMapping( uniformsGroup, webglProgram );\n\n\t\t// update UBO once per frame\n\n\t\tconst frame = info.render.frame;\n\n\t\tif ( updateList[ uniformsGroup.id ] !== frame ) {\n\n\t\t\tupdateBufferData( uniformsGroup );\n\n\t\t\tupdateList[ uniformsGroup.id ] = frame;\n\n\t\t}\n\n\t}\n\n\tfunction createBuffer( uniformsGroup ) {\n\n\t\t// the setup of an UBO is independent of a particular shader program but global\n\n\t\tconst bindingPointIndex = allocateBindingPointIndex();\n\t\tuniformsGroup.__bindingPointIndex = bindingPointIndex;\n\n\t\tconst buffer = gl.createBuffer();\n\t\tconst size = uniformsGroup.__size;\n\t\tconst usage = uniformsGroup.usage;\n\n\t\tgl.bindBuffer( gl.UNIFORM_BUFFER, buffer );\n\t\tgl.bufferData( gl.UNIFORM_BUFFER, size, usage );\n\t\tgl.bindBuffer( gl.UNIFORM_BUFFER, null );\n\t\tgl.bindBufferBase( gl.UNIFORM_BUFFER, bindingPointIndex, buffer );\n\n\t\treturn buffer;\n\n\t}\n\n\tfunction allocateBindingPointIndex() {\n\n\t\tfor ( let i = 0; i < maxBindingPoints; i ++ ) {\n\n\t\t\tif ( allocatedBindingPoints.indexOf( i ) === - 1 ) {\n\n\t\t\t\tallocatedBindingPoints.push( i );\n\t\t\t\treturn i;\n\n\t\t\t}\n\n\t\t}\n\n\t\tconsole.error( 'THREE.WebGLRenderer: Maximum number of simultaneously usable uniforms groups reached.' );\n\n\t\treturn 0;\n\n\t}\n\n\tfunction updateBufferData( uniformsGroup ) {\n\n\t\tconst buffer = buffers[ uniformsGroup.id ];\n\t\tconst uniforms = uniformsGroup.uniforms;\n\t\tconst cache = uniformsGroup.__cache;\n\n\t\tgl.bindBuffer( gl.UNIFORM_BUFFER, buffer );\n\n\t\tfor ( let i = 0, il = uniforms.length; i < il; i ++ ) {\n\n\t\t\tconst uniformArray = Array.isArray( uniforms[ i ] ) ? uniforms[ i ] : [ uniforms[ i ] ];\n\n\t\t\tfor ( let j = 0, jl = uniformArray.length; j < jl; j ++ ) {\n\n\t\t\t\tconst uniform = uniformArray[ j ];\n\n\t\t\t\tif ( hasUniformChanged( uniform, i, j, cache ) === true ) {\n\n\t\t\t\t\tconst offset = uniform.__offset;\n\n\t\t\t\t\tconst values = Array.isArray( uniform.value ) ? uniform.value : [ uniform.value ];\n\n\t\t\t\t\tlet arrayOffset = 0;\n\n\t\t\t\t\tfor ( let k = 0; k < values.length; k ++ ) {\n\n\t\t\t\t\t\tconst value = values[ k ];\n\n\t\t\t\t\t\tconst info = getUniformSize( value );\n\n\t\t\t\t\t\t// TODO add integer and struct support\n\t\t\t\t\t\tif ( typeof value === 'number' || typeof value === 'boolean' ) {\n\n\t\t\t\t\t\t\tuniform.__data[ 0 ] = value;\n\t\t\t\t\t\t\tgl.bufferSubData( gl.UNIFORM_BUFFER, offset + arrayOffset, uniform.__data );\n\n\t\t\t\t\t\t} else if ( value.isMatrix3 ) {\n\n\t\t\t\t\t\t\t// manually converting 3x3 to 3x4\n\n\t\t\t\t\t\t\tuniform.__data[ 0 ] = value.elements[ 0 ];\n\t\t\t\t\t\t\tuniform.__data[ 1 ] = value.elements[ 1 ];\n\t\t\t\t\t\t\tuniform.__data[ 2 ] = value.elements[ 2 ];\n\t\t\t\t\t\t\tuniform.__data[ 3 ] = 0;\n\t\t\t\t\t\t\tuniform.__data[ 4 ] = value.elements[ 3 ];\n\t\t\t\t\t\t\tuniform.__data[ 5 ] = value.elements[ 4 ];\n\t\t\t\t\t\t\tuniform.__data[ 6 ] = value.elements[ 5 ];\n\t\t\t\t\t\t\tuniform.__data[ 7 ] = 0;\n\t\t\t\t\t\t\tuniform.__data[ 8 ] = value.elements[ 6 ];\n\t\t\t\t\t\t\tuniform.__data[ 9 ] = value.elements[ 7 ];\n\t\t\t\t\t\t\tuniform.__data[ 10 ] = value.elements[ 8 ];\n\t\t\t\t\t\t\tuniform.__data[ 11 ] = 0;\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\tvalue.toArray( uniform.__data, arrayOffset );\n\n\t\t\t\t\t\t\tarrayOffset += info.storage / Float32Array.BYTES_PER_ELEMENT;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t\tgl.bufferSubData( gl.UNIFORM_BUFFER, offset, uniform.__data );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tgl.bindBuffer( gl.UNIFORM_BUFFER, null );\n\n\t}\n\n\tfunction hasUniformChanged( uniform, index, indexArray, cache ) {\n\n\t\tconst value = uniform.value;\n\t\tconst indexString = index + '_' + indexArray;\n\n\t\tif ( cache[ indexString ] === undefined ) {\n\n\t\t\t// cache entry does not exist so far\n\n\t\t\tif ( typeof value === 'number' || typeof value === 'boolean' ) {\n\n\t\t\t\tcache[ indexString ] = value;\n\n\t\t\t} else {\n\n\t\t\t\tcache[ indexString ] = value.clone();\n\n\t\t\t}\n\n\t\t\treturn true;\n\n\t\t} else {\n\n\t\t\tconst cachedObject = cache[ indexString ];\n\n\t\t\t// compare current value with cached entry\n\n\t\t\tif ( typeof value === 'number' || typeof value === 'boolean' ) {\n\n\t\t\t\tif ( cachedObject !== value ) {\n\n\t\t\t\t\tcache[ indexString ] = value;\n\t\t\t\t\treturn true;\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\tif ( cachedObject.equals( value ) === false ) {\n\n\t\t\t\t\tcachedObject.copy( value );\n\t\t\t\t\treturn true;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn false;\n\n\t}\n\n\tfunction prepareUniformsGroup( uniformsGroup ) {\n\n\t\t// determine total buffer size according to the STD140 layout\n\t\t// Hint: STD140 is the only supported layout in WebGL 2\n\n\t\tconst uniforms = uniformsGroup.uniforms;\n\n\t\tlet offset = 0; // global buffer offset in bytes\n\t\tconst chunkSize = 16; // size of a chunk in bytes\n\n\t\tfor ( let i = 0, l = uniforms.length; i < l; i ++ ) {\n\n\t\t\tconst uniformArray = Array.isArray( uniforms[ i ] ) ? uniforms[ i ] : [ uniforms[ i ] ];\n\n\t\t\tfor ( let j = 0, jl = uniformArray.length; j < jl; j ++ ) {\n\n\t\t\t\tconst uniform = uniformArray[ j ];\n\n\t\t\t\tconst values = Array.isArray( uniform.value ) ? uniform.value : [ uniform.value ];\n\n\t\t\t\tfor ( let k = 0, kl = values.length; k < kl; k ++ ) {\n\n\t\t\t\t\tconst value = values[ k ];\n\n\t\t\t\t\tconst info = getUniformSize( value );\n\n\t\t\t\t\t// Calculate the chunk offset\n\t\t\t\t\tconst chunkOffsetUniform = offset % chunkSize;\n\n\t\t\t\t\t// Check for chunk overflow\n\t\t\t\t\tif ( chunkOffsetUniform !== 0 && ( chunkSize - chunkOffsetUniform ) < info.boundary ) {\n\n\t\t\t\t\t\t// Add padding and adjust offset\n\t\t\t\t\t\toffset += ( chunkSize - chunkOffsetUniform );\n\n\t\t\t\t\t}\n\n\t\t\t\t\t// the following two properties will be used for partial buffer updates\n\n\t\t\t\t\tuniform.__data = new Float32Array( info.storage / Float32Array.BYTES_PER_ELEMENT );\n\t\t\t\t\tuniform.__offset = offset;\n\n\n\t\t\t\t\t// Update the global offset\n\t\t\t\t\toffset += info.storage;\n\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\t// ensure correct final padding\n\n\t\tconst chunkOffset = offset % chunkSize;\n\n\t\tif ( chunkOffset > 0 ) offset += ( chunkSize - chunkOffset );\n\n\t\t//\n\n\t\tuniformsGroup.__size = offset;\n\t\tuniformsGroup.__cache = {};\n\n\t\treturn this;\n\n\t}\n\n\tfunction getUniformSize( value ) {\n\n\t\tconst info = {\n\t\t\tboundary: 0, // bytes\n\t\t\tstorage: 0 // bytes\n\t\t};\n\n\t\t// determine sizes according to STD140\n\n\t\tif ( typeof value === 'number' || typeof value === 'boolean' ) {\n\n\t\t\t// float/int/bool\n\n\t\t\tinfo.boundary = 4;\n\t\t\tinfo.storage = 4;\n\n\t\t} else if ( value.isVector2 ) {\n\n\t\t\t// vec2\n\n\t\t\tinfo.boundary = 8;\n\t\t\tinfo.storage = 8;\n\n\t\t} else if ( value.isVector3 || value.isColor ) {\n\n\t\t\t// vec3\n\n\t\t\tinfo.boundary = 16;\n\t\t\tinfo.storage = 12; // evil: vec3 must start on a 16-byte boundary but it only consumes 12 bytes\n\n\t\t} else if ( value.isVector4 ) {\n\n\t\t\t// vec4\n\n\t\t\tinfo.boundary = 16;\n\t\t\tinfo.storage = 16;\n\n\t\t} else if ( value.isMatrix3 ) {\n\n\t\t\t// mat3 (in STD140 a 3x3 matrix is represented as 3x4)\n\n\t\t\tinfo.boundary = 48;\n\t\t\tinfo.storage = 48;\n\n\t\t} else if ( value.isMatrix4 ) {\n\n\t\t\t// mat4\n\n\t\t\tinfo.boundary = 64;\n\t\t\tinfo.storage = 64;\n\n\t\t} else if ( value.isTexture ) {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: Texture samplers can not be part of an uniforms group.' );\n\n\t\t} else {\n\n\t\t\tconsole.warn( 'THREE.WebGLRenderer: Unsupported uniform value type.', value );\n\n\t\t}\n\n\t\treturn info;\n\n\t}\n\n\tfunction onUniformsGroupsDispose( event ) {\n\n\t\tconst uniformsGroup = event.target;\n\n\t\tuniformsGroup.removeEventListener( 'dispose', onUniformsGroupsDispose );\n\n\t\tconst index = allocatedBindingPoints.indexOf( uniformsGroup.__bindingPointIndex );\n\t\tallocatedBindingPoints.splice( index, 1 );\n\n\t\tgl.deleteBuffer( buffers[ uniformsGroup.id ] );\n\n\t\tdelete buffers[ uniformsGroup.id ];\n\t\tdelete updateList[ uniformsGroup.id ];\n\n\t}\n\n\tfunction dispose() {\n\n\t\tfor ( const id in buffers ) {\n\n\t\t\tgl.deleteBuffer( buffers[ id ] );\n\n\t\t}\n\n\t\tallocatedBindingPoints = [];\n\t\tbuffers = {};\n\t\tupdateList = {};\n\n\t}\n\n\treturn {\n\n\t\tbind: bind,\n\t\tupdate: update,\n\n\t\tdispose: dispose\n\n\t};\n\n}\n\nclass WebGLRenderer {\n\n\tconstructor( parameters = {} ) {\n\n\t\tconst {\n\t\t\tcanvas = createCanvasElement(),\n\t\t\tcontext = null,\n\t\t\tdepth = true,\n\t\t\tstencil = false,\n\t\t\talpha = false,\n\t\t\tantialias = false,\n\t\t\tpremultipliedAlpha = true,\n\t\t\tpreserveDrawingBuffer = false,\n\t\t\tpowerPreference = 'default',\n\t\t\tfailIfMajorPerformanceCaveat = false,\n\t\t} = parameters;\n\n\t\tthis.isWebGLRenderer = true;\n\n\t\tlet _alpha;\n\n\t\tif ( context !== null ) {\n\n\t\t\tif ( typeof WebGLRenderingContext !== 'undefined' && context instanceof WebGLRenderingContext ) {\n\n\t\t\t\tthrow new Error( 'THREE.WebGLRenderer: WebGL 1 is not supported since r163.' );\n\n\t\t\t}\n\n\t\t\t_alpha = context.getContextAttributes().alpha;\n\n\t\t} else {\n\n\t\t\t_alpha = alpha;\n\n\t\t}\n\n\t\tconst uintClearColor = new Uint32Array( 4 );\n\t\tconst intClearColor = new Int32Array( 4 );\n\n\t\tlet currentRenderList = null;\n\t\tlet currentRenderState = null;\n\n\t\t// render() can be called from within a callback triggered by another render.\n\t\t// We track this so that the nested render call gets its list and state isolated from the parent render call.\n\n\t\tconst renderListStack = [];\n\t\tconst renderStateStack = [];\n\n\t\t// public properties\n\n\t\tthis.domElement = canvas;\n\n\t\t// Debug configuration container\n\t\tthis.debug = {\n\n\t\t\t/**\n\t\t\t * Enables error checking and reporting when shader programs are being compiled\n\t\t\t * @type {boolean}\n\t\t\t */\n\t\t\tcheckShaderErrors: true,\n\t\t\t/**\n\t\t\t * Callback for custom error reporting.\n\t\t\t * @type {?Function}\n\t\t\t */\n\t\t\tonShaderError: null\n\t\t};\n\n\t\t// clearing\n\n\t\tthis.autoClear = true;\n\t\tthis.autoClearColor = true;\n\t\tthis.autoClearDepth = true;\n\t\tthis.autoClearStencil = true;\n\n\t\t// scene graph\n\n\t\tthis.sortObjects = true;\n\n\t\t// user-defined clipping\n\n\t\tthis.clippingPlanes = [];\n\t\tthis.localClippingEnabled = false;\n\n\t\t// physically based shading\n\n\t\tthis._outputColorSpace = SRGBColorSpace;\n\n\t\t// tone mapping\n\n\t\tthis.toneMapping = NoToneMapping;\n\t\tthis.toneMappingExposure = 1.0;\n\n\t\t// internal properties\n\n\t\tconst _this = this;\n\n\t\tlet _isContextLost = false;\n\n\t\t// internal state cache\n\n\t\tlet _currentActiveCubeFace = 0;\n\t\tlet _currentActiveMipmapLevel = 0;\n\t\tlet _currentRenderTarget = null;\n\t\tlet _currentMaterialId = - 1;\n\n\t\tlet _currentCamera = null;\n\n\t\tconst _currentViewport = new Vector4();\n\t\tconst _currentScissor = new Vector4();\n\t\tlet _currentScissorTest = null;\n\n\t\tconst _currentClearColor = new Color( 0x000000 );\n\t\tlet _currentClearAlpha = 0;\n\n\t\t//\n\n\t\tlet _width = canvas.width;\n\t\tlet _height = canvas.height;\n\n\t\tlet _pixelRatio = 1;\n\t\tlet _opaqueSort = null;\n\t\tlet _transparentSort = null;\n\n\t\tconst _viewport = new Vector4( 0, 0, _width, _height );\n\t\tconst _scissor = new Vector4( 0, 0, _width, _height );\n\t\tlet _scissorTest = false;\n\n\t\t// frustum\n\n\t\tconst _frustum = new Frustum();\n\n\t\t// clipping\n\n\t\tlet _clippingEnabled = false;\n\t\tlet _localClippingEnabled = false;\n\n\t\t// camera matrices cache\n\n\t\tconst _projScreenMatrix = new Matrix4();\n\n\t\tconst _vector3 = new Vector3();\n\n\t\tconst _emptyScene = { background: null, fog: null, environment: null, overrideMaterial: null, isScene: true };\n\n\t\tlet _renderBackground = false;\n\n\t\tfunction getTargetPixelRatio() {\n\n\t\t\treturn _currentRenderTarget === null ? _pixelRatio : 1;\n\n\t\t}\n\n\t\t// initialize\n\n\t\tlet _gl = context;\n\n\t\tfunction getContext( contextName, contextAttributes ) {\n\n\t\t\treturn canvas.getContext( contextName, contextAttributes );\n\n\t\t}\n\n\t\ttry {\n\n\t\t\tconst contextAttributes = {\n\t\t\t\talpha: true,\n\t\t\t\tdepth,\n\t\t\t\tstencil,\n\t\t\t\tantialias,\n\t\t\t\tpremultipliedAlpha,\n\t\t\t\tpreserveDrawingBuffer,\n\t\t\t\tpowerPreference,\n\t\t\t\tfailIfMajorPerformanceCaveat,\n\t\t\t};\n\n\t\t\t// OffscreenCanvas does not have setAttribute, see #22811\n\t\t\tif ( 'setAttribute' in canvas ) canvas.setAttribute( 'data-engine', `three.js r${REVISION}` );\n\n\t\t\t// event listeners must be registered before WebGL context is created, see #12753\n\t\t\tcanvas.addEventListener( 'webglcontextlost', onContextLost, false );\n\t\t\tcanvas.addEventListener( 'webglcontextrestored', onContextRestore, false );\n\t\t\tcanvas.addEventListener( 'webglcontextcreationerror', onContextCreationError, false );\n\n\t\t\tif ( _gl === null ) {\n\n\t\t\t\tconst contextName = 'webgl2';\n\n\t\t\t\t_gl = getContext( contextName, contextAttributes );\n\n\t\t\t\tif ( _gl === null ) {\n\n\t\t\t\t\tif ( getContext( contextName ) ) {\n\n\t\t\t\t\t\tthrow new Error( 'Error creating WebGL context with your selected attributes.' );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tthrow new Error( 'Error creating WebGL context.' );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} catch ( error ) {\n\n\t\t\tconsole.error( 'THREE.WebGLRenderer: ' + error.message );\n\t\t\tthrow error;\n\n\t\t}\n\n\t\tlet extensions, capabilities, state, info;\n\t\tlet properties, textures, cubemaps, cubeuvmaps, attributes, geometries, objects;\n\t\tlet programCache, materials, renderLists, renderStates, clipping, shadowMap;\n\n\t\tlet background, morphtargets, bufferRenderer, indexedBufferRenderer;\n\n\t\tlet utils, bindingStates, uniformsGroups;\n\n\t\tfunction initGLContext() {\n\n\t\t\textensions = new WebGLExtensions( _gl );\n\t\t\textensions.init();\n\n\t\t\tutils = new WebGLUtils( _gl, extensions );\n\n\t\t\tcapabilities = new WebGLCapabilities( _gl, extensions, parameters, utils );\n\n\t\t\tstate = new WebGLState( _gl );\n\n\t\t\tinfo = new WebGLInfo( _gl );\n\t\t\tproperties = new WebGLProperties();\n\t\t\ttextures = new WebGLTextures( _gl, extensions, state, properties, capabilities, utils, info );\n\t\t\tcubemaps = new WebGLCubeMaps( _this );\n\t\t\tcubeuvmaps = new WebGLCubeUVMaps( _this );\n\t\t\tattributes = new WebGLAttributes( _gl );\n\t\t\tbindingStates = new WebGLBindingStates( _gl, attributes );\n\t\t\tgeometries = new WebGLGeometries( _gl, attributes, info, bindingStates );\n\t\t\tobjects = new WebGLObjects( _gl, geometries, attributes, info );\n\t\t\tmorphtargets = new WebGLMorphtargets( _gl, capabilities, textures );\n\t\t\tclipping = new WebGLClipping( properties );\n\t\t\tprogramCache = new WebGLPrograms( _this, cubemaps, cubeuvmaps, extensions, capabilities, bindingStates, clipping );\n\t\t\tmaterials = new WebGLMaterials( _this, properties );\n\t\t\trenderLists = new WebGLRenderLists();\n\t\t\trenderStates = new WebGLRenderStates( extensions );\n\t\t\tbackground = new WebGLBackground( _this, cubemaps, cubeuvmaps, state, objects, _alpha, premultipliedAlpha );\n\t\t\tshadowMap = new WebGLShadowMap( _this, objects, capabilities );\n\t\t\tuniformsGroups = new WebGLUniformsGroups( _gl, info, capabilities, state );\n\n\t\t\tbufferRenderer = new WebGLBufferRenderer( _gl, extensions, info );\n\t\t\tindexedBufferRenderer = new WebGLIndexedBufferRenderer( _gl, extensions, info );\n\n\t\t\tinfo.programs = programCache.programs;\n\n\t\t\t_this.capabilities = capabilities;\n\t\t\t_this.extensions = extensions;\n\t\t\t_this.properties = properties;\n\t\t\t_this.renderLists = renderLists;\n\t\t\t_this.shadowMap = shadowMap;\n\t\t\t_this.state = state;\n\t\t\t_this.info = info;\n\n\t\t}\n\n\t\tinitGLContext();\n\n\t\t// xr\n\n\t\tconst xr = new WebXRManager( _this, _gl );\n\n\t\tthis.xr = xr;\n\n\t\t// API\n\n\t\tthis.getContext = function () {\n\n\t\t\treturn _gl;\n\n\t\t};\n\n\t\tthis.getContextAttributes = function () {\n\n\t\t\treturn _gl.getContextAttributes();\n\n\t\t};\n\n\t\tthis.forceContextLoss = function () {\n\n\t\t\tconst extension = extensions.get( 'WEBGL_lose_context' );\n\t\t\tif ( extension ) extension.loseContext();\n\n\t\t};\n\n\t\tthis.forceContextRestore = function () {\n\n\t\t\tconst extension = extensions.get( 'WEBGL_lose_context' );\n\t\t\tif ( extension ) extension.restoreContext();\n\n\t\t};\n\n\t\tthis.getPixelRatio = function () {\n\n\t\t\treturn _pixelRatio;\n\n\t\t};\n\n\t\tthis.setPixelRatio = function ( value ) {\n\n\t\t\tif ( value === undefined ) return;\n\n\t\t\t_pixelRatio = value;\n\n\t\t\tthis.setSize( _width, _height, false );\n\n\t\t};\n\n\t\tthis.getSize = function ( target ) {\n\n\t\t\treturn target.set( _width, _height );\n\n\t\t};\n\n\t\tthis.setSize = function ( width, height, updateStyle = true ) {\n\n\t\t\tif ( xr.isPresenting ) {\n\n\t\t\t\tconsole.warn( 'THREE.WebGLRenderer: Can\\'t change size while VR device is presenting.' );\n\t\t\t\treturn;\n\n\t\t\t}\n\n\t\t\t_width = width;\n\t\t\t_height = height;\n\n\t\t\tcanvas.width = Math.floor( width * _pixelRatio );\n\t\t\tcanvas.height = Math.floor( height * _pixelRatio );\n\n\t\t\tif ( updateStyle === true ) {\n\n\t\t\t\tcanvas.style.width = width + 'px';\n\t\t\t\tcanvas.style.height = height + 'px';\n\n\t\t\t}\n\n\t\t\tthis.setViewport( 0, 0, width, height );\n\n\t\t};\n\n\t\tthis.getDrawingBufferSize = function ( target ) {\n\n\t\t\treturn target.set( _width * _pixelRatio, _height * _pixelRatio ).floor();\n\n\t\t};\n\n\t\tthis.setDrawingBufferSize = function ( width, height, pixelRatio ) {\n\n\t\t\t_width = width;\n\t\t\t_height = height;\n\n\t\t\t_pixelRatio = pixelRatio;\n\n\t\t\tcanvas.width = Math.floor( width * pixelRatio );\n\t\t\tcanvas.height = Math.floor( height * pixelRatio );\n\n\t\t\tthis.setViewport( 0, 0, width, height );\n\n\t\t};\n\n\t\tthis.getCurrentViewport = function ( target ) {\n\n\t\t\treturn target.copy( _currentViewport );\n\n\t\t};\n\n\t\tthis.getViewport = function ( target ) {\n\n\t\t\treturn target.copy( _viewport );\n\n\t\t};\n\n\t\tthis.setViewport = function ( x, y, width, height ) {\n\n\t\t\tif ( x.isVector4 ) {\n\n\t\t\t\t_viewport.set( x.x, x.y, x.z, x.w );\n\n\t\t\t} else {\n\n\t\t\t\t_viewport.set( x, y, width, height );\n\n\t\t\t}\n\n\t\t\tstate.viewport( _currentViewport.copy( _viewport ).multiplyScalar( _pixelRatio ).round() );\n\n\t\t};\n\n\t\tthis.getScissor = function ( target ) {\n\n\t\t\treturn target.copy( _scissor );\n\n\t\t};\n\n\t\tthis.setScissor = function ( x, y, width, height ) {\n\n\t\t\tif ( x.isVector4 ) {\n\n\t\t\t\t_scissor.set( x.x, x.y, x.z, x.w );\n\n\t\t\t} else {\n\n\t\t\t\t_scissor.set( x, y, width, height );\n\n\t\t\t}\n\n\t\t\tstate.scissor( _currentScissor.copy( _scissor ).multiplyScalar( _pixelRatio ).round() );\n\n\t\t};\n\n\t\tthis.getScissorTest = function () {\n\n\t\t\treturn _scissorTest;\n\n\t\t};\n\n\t\tthis.setScissorTest = function ( boolean ) {\n\n\t\t\tstate.setScissorTest( _scissorTest = boolean );\n\n\t\t};\n\n\t\tthis.setOpaqueSort = function ( method ) {\n\n\t\t\t_opaqueSort = method;\n\n\t\t};\n\n\t\tthis.setTransparentSort = function ( method ) {\n\n\t\t\t_transparentSort = method;\n\n\t\t};\n\n\t\t// Clearing\n\n\t\tthis.getClearColor = function ( target ) {\n\n\t\t\treturn target.copy( background.getClearColor() );\n\n\t\t};\n\n\t\tthis.setClearColor = function () {\n\n\t\t\tbackground.setClearColor.apply( background, arguments );\n\n\t\t};\n\n\t\tthis.getClearAlpha = function () {\n\n\t\t\treturn background.getClearAlpha();\n\n\t\t};\n\n\t\tthis.setClearAlpha = function () {\n\n\t\t\tbackground.setClearAlpha.apply( background, arguments );\n\n\t\t};\n\n\t\tthis.clear = function ( color = true, depth = true, stencil = true ) {\n\n\t\t\tlet bits = 0;\n\n\t\t\tif ( color ) {\n\n\t\t\t\t// check if we're trying to clear an integer target\n\t\t\t\tlet isIntegerFormat = false;\n\t\t\t\tif ( _currentRenderTarget !== null ) {\n\n\t\t\t\t\tconst targetFormat = _currentRenderTarget.texture.format;\n\t\t\t\t\tisIntegerFormat = targetFormat === RGBAIntegerFormat ||\n\t\t\t\t\t\ttargetFormat === RGIntegerFormat ||\n\t\t\t\t\t\ttargetFormat === RedIntegerFormat;\n\n\t\t\t\t}\n\n\t\t\t\t// use the appropriate clear functions to clear the target if it's a signed\n\t\t\t\t// or unsigned integer target\n\t\t\t\tif ( isIntegerFormat ) {\n\n\t\t\t\t\tconst targetType = _currentRenderTarget.texture.type;\n\t\t\t\t\tconst isUnsignedType = targetType === UnsignedByteType ||\n\t\t\t\t\t\ttargetType === UnsignedIntType ||\n\t\t\t\t\t\ttargetType === UnsignedShortType ||\n\t\t\t\t\t\ttargetType === UnsignedInt248Type ||\n\t\t\t\t\t\ttargetType === UnsignedShort4444Type ||\n\t\t\t\t\t\ttargetType === UnsignedShort5551Type;\n\n\t\t\t\t\tconst clearColor = background.getClearColor();\n\t\t\t\t\tconst a = background.getClearAlpha();\n\t\t\t\t\tconst r = clearColor.r;\n\t\t\t\t\tconst g = clearColor.g;\n\t\t\t\t\tconst b = clearColor.b;\n\n\t\t\t\t\tif ( isUnsignedType ) {\n\n\t\t\t\t\t\tuintClearColor[ 0 ] = r;\n\t\t\t\t\t\tuintClearColor[ 1 ] = g;\n\t\t\t\t\t\tuintClearColor[ 2 ] = b;\n\t\t\t\t\t\tuintClearColor[ 3 ] = a;\n\t\t\t\t\t\t_gl.clearBufferuiv( _gl.COLOR, 0, uintClearColor );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tintClearColor[ 0 ] = r;\n\t\t\t\t\t\tintClearColor[ 1 ] = g;\n\t\t\t\t\t\tintClearColor[ 2 ] = b;\n\t\t\t\t\t\tintClearColor[ 3 ] = a;\n\t\t\t\t\t\t_gl.clearBufferiv( _gl.COLOR, 0, intClearColor );\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\tbits |= _gl.COLOR_BUFFER_BIT;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tif ( depth ) bits |= _gl.DEPTH_BUFFER_BIT;\n\t\t\tif ( stencil ) {\n\n\t\t\t\tbits |= _gl.STENCIL_BUFFER_BIT;\n\t\t\t\tthis.state.buffers.stencil.setMask( 0xffffffff );\n\n\t\t\t}\n\n\t\t\t_gl.clear( bits );\n\n\t\t};\n\n\t\tthis.clearColor = function () {\n\n\t\t\tthis.clear( true, false, false );\n\n\t\t};\n\n\t\tthis.clearDepth = function () {\n\n\t\t\tthis.clear( false, true, false );\n\n\t\t};\n\n\t\tthis.clearStencil = function () {\n\n\t\t\tthis.clear( false, false, true );\n\n\t\t};\n\n\t\t//\n\n\t\tthis.dispose = function () {\n\n\t\t\tcanvas.removeEventListener( 'webglcontextlost', onContextLost, false );\n\t\t\tcanvas.removeEventListener( 'webglcontextrestored', onContextRestore, false );\n\t\t\tcanvas.removeEventListener( 'webglcontextcreationerror', onContextCreationError, false );\n\n\t\t\trenderLists.dispose();\n\t\t\trenderStates.dispose();\n\t\t\tproperties.dispose();\n\t\t\tcubemaps.dispose();\n\t\t\tcubeuvmaps.dispose();\n\t\t\tobjects.dispose();\n\t\t\tbindingStates.dispose();\n\t\t\tuniformsGroups.dispose();\n\t\t\tprogramCache.dispose();\n\n\t\t\txr.dispose();\n\n\t\t\txr.removeEventListener( 'sessionstart', onXRSessionStart );\n\t\t\txr.removeEventListener( 'sessionend', onXRSessionEnd );\n\n\t\t\tanimation.stop();\n\n\t\t};\n\n\t\t// Events\n\n\t\tfunction onContextLost( event ) {\n\n\t\t\tevent.preventDefault();\n\n\t\t\tconsole.log( 'THREE.WebGLRenderer: Context Lost.' );\n\n\t\t\t_isContextLost = true;\n\n\t\t}\n\n\t\tfunction onContextRestore( /* event */ ) {\n\n\t\t\tconsole.log( 'THREE.WebGLRenderer: Context Restored.' );\n\n\t\t\t_isContextLost = false;\n\n\t\t\tconst infoAutoReset = info.autoReset;\n\t\t\tconst shadowMapEnabled = shadowMap.enabled;\n\t\t\tconst shadowMapAutoUpdate = shadowMap.autoUpdate;\n\t\t\tconst shadowMapNeedsUpdate = shadowMap.needsUpdate;\n\t\t\tconst shadowMapType = shadowMap.type;\n\n\t\t\tinitGLContext();\n\n\t\t\tinfo.autoReset = infoAutoReset;\n\t\t\tshadowMap.enabled = shadowMapEnabled;\n\t\t\tshadowMap.autoUpdate = shadowMapAutoUpdate;\n\t\t\tshadowMap.needsUpdate = shadowMapNeedsUpdate;\n\t\t\tshadowMap.type = shadowMapType;\n\n\t\t}\n\n\t\tfunction onContextCreationError( event ) {\n\n\t\t\tconsole.error( 'THREE.WebGLRenderer: A WebGL context could not be created. Reason: ', event.statusMessage );\n\n\t\t}\n\n\t\tfunction onMaterialDispose( event ) {\n\n\t\t\tconst material = event.target;\n\n\t\t\tmaterial.removeEventListener( 'dispose', onMaterialDispose );\n\n\t\t\tdeallocateMaterial( material );\n\n\t\t}\n\n\t\t// Buffer deallocation\n\n\t\tfunction deallocateMaterial( material ) {\n\n\t\t\treleaseMaterialProgramReferences( material );\n\n\t\t\tproperties.remove( material );\n\n\t\t}\n\n\n\t\tfunction releaseMaterialProgramReferences( material ) {\n\n\t\t\tconst programs = properties.get( material ).programs;\n\n\t\t\tif ( programs !== undefined ) {\n\n\t\t\t\tprograms.forEach( function ( program ) {\n\n\t\t\t\t\tprogramCache.releaseProgram( program );\n\n\t\t\t\t} );\n\n\t\t\t\tif ( material.isShaderMaterial ) {\n\n\t\t\t\t\tprogramCache.releaseShaderCache( material );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\t// Buffer rendering\n\n\t\tthis.renderBufferDirect = function ( camera, scene, geometry, material, object, group ) {\n\n\t\t\tif ( scene === null ) scene = _emptyScene; // renderBufferDirect second parameter used to be fog (could be null)\n\n\t\t\tconst frontFaceCW = ( object.isMesh && object.matrixWorld.determinant() < 0 );\n\n\t\t\tconst program = setProgram( camera, scene, geometry, material, object );\n\n\t\t\tstate.setMaterial( material, frontFaceCW );\n\n\t\t\t//\n\n\t\t\tlet index = geometry.index;\n\t\t\tlet rangeFactor = 1;\n\n\t\t\tif ( material.wireframe === true ) {\n\n\t\t\t\tindex = geometries.getWireframeAttribute( geometry );\n\n\t\t\t\tif ( index === undefined ) return;\n\n\t\t\t\trangeFactor = 2;\n\n\t\t\t}\n\n\t\t\t//\n\n\t\t\tconst drawRange = geometry.drawRange;\n\t\t\tconst position = geometry.attributes.position;\n\n\t\t\tlet drawStart = drawRange.start * rangeFactor;\n\t\t\tlet drawEnd = ( drawRange.start + drawRange.count ) * rangeFactor;\n\n\t\t\tif ( group !== null ) {\n\n\t\t\t\tdrawStart = Math.max( drawStart, group.start * rangeFactor );\n\t\t\t\tdrawEnd = Math.min( drawEnd, ( group.start + group.count ) * rangeFactor );\n\n\t\t\t}\n\n\t\t\tif ( index !== null ) {\n\n\t\t\t\tdrawStart = Math.max( drawStart, 0 );\n\t\t\t\tdrawEnd = Math.min( drawEnd, index.count );\n\n\t\t\t} else if ( position !== undefined && position !== null ) {\n\n\t\t\t\tdrawStart = Math.max( drawStart, 0 );\n\t\t\t\tdrawEnd = Math.min( drawEnd, position.count );\n\n\t\t\t}\n\n\t\t\tconst drawCount = drawEnd - drawStart;\n\n\t\t\tif ( drawCount < 0 || drawCount === Infinity ) return;\n\n\t\t\t//\n\n\t\t\tbindingStates.setup( object, material, program, geometry, index );\n\n\t\t\tlet attribute;\n\t\t\tlet renderer = bufferRenderer;\n\n\t\t\tif ( index !== null ) {\n\n\t\t\t\tattribute = attributes.get( index );\n\n\t\t\t\trenderer = indexedBufferRenderer;\n\t\t\t\trenderer.setIndex( attribute );\n\n\t\t\t}\n\n\t\t\t//\n\n\t\t\tif ( object.isMesh ) {\n\n\t\t\t\tif ( material.wireframe === true ) {\n\n\t\t\t\t\tstate.setLineWidth( material.wireframeLinewidth * getTargetPixelRatio() );\n\t\t\t\t\trenderer.setMode( _gl.LINES );\n\n\t\t\t\t} else {\n\n\t\t\t\t\trenderer.setMode( _gl.TRIANGLES );\n\n\t\t\t\t}\n\n\t\t\t} else if ( object.isLine ) {\n\n\t\t\t\tlet lineWidth = material.linewidth;\n\n\t\t\t\tif ( lineWidth === undefined ) lineWidth = 1; // Not using Line*Material\n\n\t\t\t\tstate.setLineWidth( lineWidth * getTargetPixelRatio() );\n\n\t\t\t\tif ( object.isLineSegments ) {\n\n\t\t\t\t\trenderer.setMode( _gl.LINES );\n\n\t\t\t\t} else if ( object.isLineLoop ) {\n\n\t\t\t\t\trenderer.setMode( _gl.LINE_LOOP );\n\n\t\t\t\t} else {\n\n\t\t\t\t\trenderer.setMode( _gl.LINE_STRIP );\n\n\t\t\t\t}\n\n\t\t\t} else if ( object.isPoints ) {\n\n\t\t\t\trenderer.setMode( _gl.POINTS );\n\n\t\t\t} else if ( object.isSprite ) {\n\n\t\t\t\trenderer.setMode( _gl.TRIANGLES );\n\n\t\t\t}\n\n\t\t\tif ( object.isBatchedMesh ) {\n\n\t\t\t\tif ( object._multiDrawInstances !== null ) {\n\n\t\t\t\t\trenderer.renderMultiDrawInstances( object._multiDrawStarts, object._multiDrawCounts, object._multiDrawCount, object._multiDrawInstances );\n\n\t\t\t\t} else {\n\n\t\t\t\t\trenderer.renderMultiDraw( object._multiDrawStarts, object._multiDrawCounts, object._multiDrawCount );\n\n\t\t\t\t}\n\n\t\t\t} else if ( object.isInstancedMesh ) {\n\n\t\t\t\trenderer.renderInstances( drawStart, drawCount, object.count );\n\n\t\t\t} else if ( geometry.isInstancedBufferGeometry ) {\n\n\t\t\t\tconst maxInstanceCount = geometry._maxInstanceCount !== undefined ? geometry._maxInstanceCount : Infinity;\n\t\t\t\tconst instanceCount = Math.min( geometry.instanceCount, maxInstanceCount );\n\n\t\t\t\trenderer.renderInstances( drawStart, drawCount, instanceCount );\n\n\t\t\t} else {\n\n\t\t\t\trenderer.render( drawStart, drawCount );\n\n\t\t\t}\n\n\t\t};\n\n\t\t// Compile\n\n\t\tfunction prepareMaterial( material, scene, object ) {\n\n\t\t\tif ( material.transparent === true && material.side === DoubleSide && material.forceSinglePass === false ) {\n\n\t\t\t\tmaterial.side = BackSide;\n\t\t\t\tmaterial.needsUpdate = true;\n\t\t\t\tgetProgram( material, scene, object );\n\n\t\t\t\tmaterial.side = FrontSide;\n\t\t\t\tmaterial.needsUpdate = true;\n\t\t\t\tgetProgram( material, scene, object );\n\n\t\t\t\tmaterial.side = DoubleSide;\n\n\t\t\t} else {\n\n\t\t\t\tgetProgram( material, scene, object );\n\n\t\t\t}\n\n\t\t}\n\n\t\tthis.compile = function ( scene, camera, targetScene = null ) {\n\n\t\t\tif ( targetScene === null ) targetScene = scene;\n\n\t\t\tcurrentRenderState = renderStates.get( targetScene );\n\t\t\tcurrentRenderState.init( camera );\n\n\t\t\trenderStateStack.push( currentRenderState );\n\n\t\t\t// gather lights from both the target scene and the new object that will be added to the scene.\n\n\t\t\ttargetScene.traverseVisible( function ( object ) {\n\n\t\t\t\tif ( object.isLight && object.layers.test( camera.layers ) ) {\n\n\t\t\t\t\tcurrentRenderState.pushLight( object );\n\n\t\t\t\t\tif ( object.castShadow ) {\n\n\t\t\t\t\t\tcurrentRenderState.pushShadow( object );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t} );\n\n\t\t\tif ( scene !== targetScene ) {\n\n\t\t\t\tscene.traverseVisible( function ( object ) {\n\n\t\t\t\t\tif ( object.isLight && object.layers.test( camera.layers ) ) {\n\n\t\t\t\t\t\tcurrentRenderState.pushLight( object );\n\n\t\t\t\t\t\tif ( object.castShadow ) {\n\n\t\t\t\t\t\t\tcurrentRenderState.pushShadow( object );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t} );\n\n\t\t\t}\n\n\t\t\tcurrentRenderState.setupLights();\n\n\t\t\t// Only initialize materials in the new scene, not the targetScene.\n\n\t\t\tconst materials = new Set();\n\n\t\t\tscene.traverse( function ( object ) {\n\n\t\t\t\tconst material = object.material;\n\n\t\t\t\tif ( material ) {\n\n\t\t\t\t\tif ( Array.isArray( material ) ) {\n\n\t\t\t\t\t\tfor ( let i = 0; i < material.length; i ++ ) {\n\n\t\t\t\t\t\t\tconst material2 = material[ i ];\n\n\t\t\t\t\t\t\tprepareMaterial( material2, targetScene, object );\n\t\t\t\t\t\t\tmaterials.add( material2 );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tprepareMaterial( material, targetScene, object );\n\t\t\t\t\t\tmaterials.add( material );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t} );\n\n\t\t\trenderStateStack.pop();\n\t\t\tcurrentRenderState = null;\n\n\t\t\treturn materials;\n\n\t\t};\n\n\t\t// compileAsync\n\n\t\tthis.compileAsync = function ( scene, camera, targetScene = null ) {\n\n\t\t\tconst materials = this.compile( scene, camera, targetScene );\n\n\t\t\t// Wait for all the materials in the new object to indicate that they're\n\t\t\t// ready to be used before resolving the promise.\n\n\t\t\treturn new Promise( ( resolve ) => {\n\n\t\t\t\tfunction checkMaterialsReady() {\n\n\t\t\t\t\tmaterials.forEach( function ( material ) {\n\n\t\t\t\t\t\tconst materialProperties = properties.get( material );\n\t\t\t\t\t\tconst program = materialProperties.currentProgram;\n\n\t\t\t\t\t\tif ( program.isReady() ) {\n\n\t\t\t\t\t\t\t// remove any programs that report they're ready to use from the list\n\t\t\t\t\t\t\tmaterials.delete( material );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t} );\n\n\t\t\t\t\t// once the list of compiling materials is empty, call the callback\n\n\t\t\t\t\tif ( materials.size === 0 ) {\n\n\t\t\t\t\t\tresolve( scene );\n\t\t\t\t\t\treturn;\n\n\t\t\t\t\t}\n\n\t\t\t\t\t// if some materials are still not ready, wait a bit and check again\n\n\t\t\t\t\tsetTimeout( checkMaterialsReady, 10 );\n\n\t\t\t\t}\n\n\t\t\t\tif ( extensions.get( 'KHR_parallel_shader_compile' ) !== null ) {\n\n\t\t\t\t\t// If we can check the compilation status of the materials without\n\t\t\t\t\t// blocking then do so right away.\n\n\t\t\t\t\tcheckMaterialsReady();\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// Otherwise start by waiting a bit to give the materials we just\n\t\t\t\t\t// initialized a chance to finish.\n\n\t\t\t\t\tsetTimeout( checkMaterialsReady, 10 );\n\n\t\t\t\t}\n\n\t\t\t} );\n\n\t\t};\n\n\t\t// Animation Loop\n\n\t\tlet onAnimationFrameCallback = null;\n\n\t\tfunction onAnimationFrame( time ) {\n\n\t\t\tif ( onAnimationFrameCallback ) onAnimationFrameCallback( time );\n\n\t\t}\n\n\t\tfunction onXRSessionStart() {\n\n\t\t\tanimation.stop();\n\n\t\t}\n\n\t\tfunction onXRSessionEnd() {\n\n\t\t\tanimation.start();\n\n\t\t}\n\n\t\tconst animation = new WebGLAnimation();\n\t\tanimation.setAnimationLoop( onAnimationFrame );\n\n\t\tif ( typeof self !== 'undefined' ) animation.setContext( self );\n\n\t\tthis.setAnimationLoop = function ( callback ) {\n\n\t\t\tonAnimationFrameCallback = callback;\n\t\t\txr.setAnimationLoop( callback );\n\n\t\t\t( callback === null ) ? animation.stop() : animation.start();\n\n\t\t};\n\n\t\txr.addEventListener( 'sessionstart', onXRSessionStart );\n\t\txr.addEventListener( 'sessionend', onXRSessionEnd );\n\n\t\t// Rendering\n\n\t\tthis.render = function ( scene, camera ) {\n\n\t\t\tif ( camera !== undefined && camera.isCamera !== true ) {\n\n\t\t\t\tconsole.error( 'THREE.WebGLRenderer.render: camera is not an instance of THREE.Camera.' );\n\t\t\t\treturn;\n\n\t\t\t}\n\n\t\t\tif ( _isContextLost === true ) return;\n\n\t\t\t// update scene graph\n\n\t\t\tif ( scene.matrixWorldAutoUpdate === true ) scene.updateMatrixWorld();\n\n\t\t\t// update camera matrices and frustum\n\n\t\t\tif ( camera.parent === null && camera.matrixWorldAutoUpdate === true ) camera.updateMatrixWorld();\n\n\t\t\tif ( xr.enabled === true && xr.isPresenting === true ) {\n\n\t\t\t\tif ( xr.cameraAutoUpdate === true ) xr.updateCamera( camera );\n\n\t\t\t\tcamera = xr.getCamera(); // use XR camera for rendering\n\n\t\t\t}\n\n\t\t\t//\n\t\t\tif ( scene.isScene === true ) scene.onBeforeRender( _this, scene, camera, _currentRenderTarget );\n\n\t\t\tcurrentRenderState = renderStates.get( scene, renderStateStack.length );\n\t\t\tcurrentRenderState.init( camera );\n\n\t\t\trenderStateStack.push( currentRenderState );\n\n\t\t\t_projScreenMatrix.multiplyMatrices( camera.projectionMatrix, camera.matrixWorldInverse );\n\t\t\t_frustum.setFromProjectionMatrix( _projScreenMatrix );\n\n\t\t\t_localClippingEnabled = this.localClippingEnabled;\n\t\t\t_clippingEnabled = clipping.init( this.clippingPlanes, _localClippingEnabled );\n\n\t\t\tcurrentRenderList = renderLists.get( scene, renderListStack.length );\n\t\t\tcurrentRenderList.init();\n\n\t\t\trenderListStack.push( currentRenderList );\n\n\t\t\tif ( xr.enabled === true && xr.isPresenting === true ) {\n\n\t\t\t\tconst depthSensingMesh = _this.xr.getDepthSensingMesh();\n\n\t\t\t\tif ( depthSensingMesh !== null ) {\n\n\t\t\t\t\tprojectObject( depthSensingMesh, camera, - Infinity, _this.sortObjects );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tprojectObject( scene, camera, 0, _this.sortObjects );\n\n\t\t\tcurrentRenderList.finish();\n\n\t\t\tif ( _this.sortObjects === true ) {\n\n\t\t\t\tcurrentRenderList.sort( _opaqueSort, _transparentSort );\n\n\t\t\t}\n\n\t\t\t_renderBackground = xr.enabled === false || xr.isPresenting === false || xr.hasDepthSensing() === false;\n\t\t\tif ( _renderBackground ) {\n\n\t\t\t\tbackground.addToRenderList( currentRenderList, scene );\n\n\t\t\t}\n\n\t\t\t//\n\n\t\t\tthis.info.render.frame ++;\n\n\t\t\tif ( _clippingEnabled === true ) clipping.beginShadows();\n\n\t\t\tconst shadowsArray = currentRenderState.state.shadowsArray;\n\n\t\t\tshadowMap.render( shadowsArray, scene, camera );\n\n\t\t\tif ( _clippingEnabled === true ) clipping.endShadows();\n\n\t\t\t//\n\n\t\t\tif ( this.info.autoReset === true ) this.info.reset();\n\n\t\t\t// render scene\n\n\t\t\tconst opaqueObjects = currentRenderList.opaque;\n\t\t\tconst transmissiveObjects = currentRenderList.transmissive;\n\n\t\t\tcurrentRenderState.setupLights();\n\n\t\t\tif ( camera.isArrayCamera ) {\n\n\t\t\t\tconst cameras = camera.cameras;\n\n\t\t\t\tif ( transmissiveObjects.length > 0 ) {\n\n\t\t\t\t\tfor ( let i = 0, l = cameras.length; i < l; i ++ ) {\n\n\t\t\t\t\t\tconst camera2 = cameras[ i ];\n\n\t\t\t\t\t\trenderTransmissionPass( opaqueObjects, transmissiveObjects, scene, camera2 );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tif ( _renderBackground ) background.render( scene );\n\n\t\t\t\tfor ( let i = 0, l = cameras.length; i < l; i ++ ) {\n\n\t\t\t\t\tconst camera2 = cameras[ i ];\n\n\t\t\t\t\trenderScene( currentRenderList, scene, camera2, camera2.viewport );\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\tif ( transmissiveObjects.length > 0 ) renderTransmissionPass( opaqueObjects, transmissiveObjects, scene, camera );\n\n\t\t\t\tif ( _renderBackground ) background.render( scene );\n\n\t\t\t\trenderScene( currentRenderList, scene, camera );\n\n\t\t\t}\n\n\t\t\t//\n\n\t\t\tif ( _currentRenderTarget !== null ) {\n\n\t\t\t\t// resolve multisample renderbuffers to a single-sample texture if necessary\n\n\t\t\t\ttextures.updateMultisampleRenderTarget( _currentRenderTarget );\n\n\t\t\t\t// Generate mipmap if we're using any kind of mipmap filtering\n\n\t\t\t\ttextures.updateRenderTargetMipmap( _currentRenderTarget );\n\n\t\t\t}\n\n\t\t\t//\n\n\t\t\tif ( scene.isScene === true ) scene.onAfterRender( _this, scene, camera );\n\n\t\t\t// _gl.finish();\n\n\t\t\tbindingStates.resetDefaultState();\n\t\t\t_currentMaterialId = - 1;\n\t\t\t_currentCamera = null;\n\n\t\t\trenderStateStack.pop();\n\n\t\t\tif ( renderStateStack.length > 0 ) {\n\n\t\t\t\tcurrentRenderState = renderStateStack[ renderStateStack.length - 1 ];\n\n\t\t\t\tif ( _clippingEnabled === true ) clipping.setGlobalState( _this.clippingPlanes, currentRenderState.state.camera );\n\n\t\t\t} else {\n\n\t\t\t\tcurrentRenderState = null;\n\n\t\t\t}\n\n\t\t\trenderListStack.pop();\n\n\t\t\tif ( renderListStack.length > 0 ) {\n\n\t\t\t\tcurrentRenderList = renderListStack[ renderListStack.length - 1 ];\n\n\t\t\t} else {\n\n\t\t\t\tcurrentRenderList = null;\n\n\t\t\t}\n\n\t\t};\n\n\t\tfunction projectObject( object, camera, groupOrder, sortObjects ) {\n\n\t\t\tif ( object.visible === false ) return;\n\n\t\t\tconst visible = object.layers.test( camera.layers );\n\n\t\t\tif ( visible ) {\n\n\t\t\t\tif ( object.isGroup ) {\n\n\t\t\t\t\tgroupOrder = object.renderOrder;\n\n\t\t\t\t} else if ( object.isLOD ) {\n\n\t\t\t\t\tif ( object.autoUpdate === true ) object.update( camera );\n\n\t\t\t\t} else if ( object.isLight ) {\n\n\t\t\t\t\tcurrentRenderState.pushLight( object );\n\n\t\t\t\t\tif ( object.castShadow ) {\n\n\t\t\t\t\t\tcurrentRenderState.pushShadow( object );\n\n\t\t\t\t\t}\n\n\t\t\t\t} else if ( object.isSprite ) {\n\n\t\t\t\t\tif ( ! object.frustumCulled || _frustum.intersectsSprite( object ) ) {\n\n\t\t\t\t\t\tif ( sortObjects ) {\n\n\t\t\t\t\t\t\t_vector3.setFromMatrixPosition( object.matrixWorld )\n\t\t\t\t\t\t\t\t.applyMatrix4( _projScreenMatrix );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tconst geometry = objects.update( object );\n\t\t\t\t\t\tconst material = object.material;\n\n\t\t\t\t\t\tif ( material.visible ) {\n\n\t\t\t\t\t\t\tcurrentRenderList.push( object, geometry, material, groupOrder, _vector3.z, null );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t} else if ( object.isMesh || object.isLine || object.isPoints ) {\n\n\t\t\t\t\tif ( ! object.frustumCulled || _frustum.intersectsObject( object ) ) {\n\n\t\t\t\t\t\tconst geometry = objects.update( object );\n\t\t\t\t\t\tconst material = object.material;\n\n\t\t\t\t\t\tif ( sortObjects ) {\n\n\t\t\t\t\t\t\tif ( object.boundingSphere !== undefined ) {\n\n\t\t\t\t\t\t\t\tif ( object.boundingSphere === null ) object.computeBoundingSphere();\n\t\t\t\t\t\t\t\t_vector3.copy( object.boundingSphere.center );\n\n\t\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t\tif ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();\n\t\t\t\t\t\t\t\t_vector3.copy( geometry.boundingSphere.center );\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t_vector3\n\t\t\t\t\t\t\t\t.applyMatrix4( object.matrixWorld )\n\t\t\t\t\t\t\t\t.applyMatrix4( _projScreenMatrix );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tif ( Array.isArray( material ) ) {\n\n\t\t\t\t\t\t\tconst groups = geometry.groups;\n\n\t\t\t\t\t\t\tfor ( let i = 0, l = groups.length; i < l; i ++ ) {\n\n\t\t\t\t\t\t\t\tconst group = groups[ i ];\n\t\t\t\t\t\t\t\tconst groupMaterial = material[ group.materialIndex ];\n\n\t\t\t\t\t\t\t\tif ( groupMaterial && groupMaterial.visible ) {\n\n\t\t\t\t\t\t\t\t\tcurrentRenderList.push( object, geometry, groupMaterial, groupOrder, _vector3.z, group );\n\n\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t} else if ( material.visible ) {\n\n\t\t\t\t\t\t\tcurrentRenderList.push( object, geometry, material, groupOrder, _vector3.z, null );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tconst children = object.children;\n\n\t\t\tfor ( let i = 0, l = children.length; i < l; i ++ ) {\n\n\t\t\t\tprojectObject( children[ i ], camera, groupOrder, sortObjects );\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction renderScene( currentRenderList, scene, camera, viewport ) {\n\n\t\t\tconst opaqueObjects = currentRenderList.opaque;\n\t\t\tconst transmissiveObjects = currentRenderList.transmissive;\n\t\t\tconst transparentObjects = currentRenderList.transparent;\n\n\t\t\tcurrentRenderState.setupLightsView( camera );\n\n\t\t\tif ( _clippingEnabled === true ) clipping.setGlobalState( _this.clippingPlanes, camera );\n\n\t\t\tif ( viewport ) state.viewport( _currentViewport.copy( viewport ) );\n\n\t\t\tif ( opaqueObjects.length > 0 ) renderObjects( opaqueObjects, scene, camera );\n\t\t\tif ( transmissiveObjects.length > 0 ) renderObjects( transmissiveObjects, scene, camera );\n\t\t\tif ( transparentObjects.length > 0 ) renderObjects( transparentObjects, scene, camera );\n\n\t\t\t// Ensure depth buffer writing is enabled so it can be cleared on next render\n\n\t\t\tstate.buffers.depth.setTest( true );\n\t\t\tstate.buffers.depth.setMask( true );\n\t\t\tstate.buffers.color.setMask( true );\n\n\t\t\tstate.setPolygonOffset( false );\n\n\t\t}\n\n\t\tfunction renderTransmissionPass( opaqueObjects, transmissiveObjects, scene, camera ) {\n\n\t\t\tconst overrideMaterial = scene.isScene === true ? scene.overrideMaterial : null;\n\n\t\t\tif ( overrideMaterial !== null ) {\n\n\t\t\t\treturn;\n\n\t\t\t}\n\n\t\t\tif ( currentRenderState.state.transmissionRenderTarget[ camera.id ] === undefined ) {\n\n\t\t\t\tcurrentRenderState.state.transmissionRenderTarget[ camera.id ] = new WebGLRenderTarget( 1, 1, {\n\t\t\t\t\tgenerateMipmaps: true,\n\t\t\t\t\ttype: ( extensions.has( 'EXT_color_buffer_half_float' ) || extensions.has( 'EXT_color_buffer_float' ) ) ? HalfFloatType : UnsignedByteType,\n\t\t\t\t\tminFilter: LinearMipmapLinearFilter,\n\t\t\t\t\tsamples: 4,\n\t\t\t\t\tstencilBuffer: stencil,\n\t\t\t\t\tresolveDepthBuffer: false,\n\t\t\t\t\tresolveStencilBuffer: false,\n\t\t\t\t\tcolorSpace: ColorManagement.workingColorSpace,\n\t\t\t\t} );\n\n\t\t\t\t// debug\n\n\t\t\t\t/*\n\t\t\t\tconst geometry = new PlaneGeometry();\n\t\t\t\tconst material = new MeshBasicMaterial( { map: _transmissionRenderTarget.texture } );\n\n\t\t\t\tconst mesh = new Mesh( geometry, material );\n\t\t\t\tscene.add( mesh );\n\t\t\t\t*/\n\n\t\t\t}\n\n\t\t\tconst transmissionRenderTarget = currentRenderState.state.transmissionRenderTarget[ camera.id ];\n\n\t\t\tconst activeViewport = camera.viewport || _currentViewport;\n\t\t\ttransmissionRenderTarget.setSize( activeViewport.z, activeViewport.w );\n\n\t\t\t//\n\n\t\t\tconst currentRenderTarget = _this.getRenderTarget();\n\t\t\t_this.setRenderTarget( transmissionRenderTarget );\n\n\t\t\t_this.getClearColor( _currentClearColor );\n\t\t\t_currentClearAlpha = _this.getClearAlpha();\n\t\t\tif ( _currentClearAlpha < 1 ) _this.setClearColor( 0xffffff, 0.5 );\n\n\t\t\tif ( _renderBackground ) {\n\n\t\t\t\tbackground.render( scene );\n\n\t\t\t} else {\n\n\t\t\t\t_this.clear();\n\n\t\t\t}\n\n\t\t\t// Turn off the features which can affect the frag color for opaque objects pass.\n\t\t\t// Otherwise they are applied twice in opaque objects pass and transmission objects pass.\n\t\t\tconst currentToneMapping = _this.toneMapping;\n\t\t\t_this.toneMapping = NoToneMapping;\n\n\t\t\t// Remove viewport from camera to avoid nested render calls resetting viewport to it (e.g Reflector).\n\t\t\t// Transmission render pass requires viewport to match the transmissionRenderTarget.\n\t\t\tconst currentCameraViewport = camera.viewport;\n\t\t\tif ( camera.viewport !== undefined ) camera.viewport = undefined;\n\n\t\t\tcurrentRenderState.setupLightsView( camera );\n\n\t\t\tif ( _clippingEnabled === true ) clipping.setGlobalState( _this.clippingPlanes, camera );\n\n\t\t\trenderObjects( opaqueObjects, scene, camera );\n\n\t\t\ttextures.updateMultisampleRenderTarget( transmissionRenderTarget );\n\t\t\ttextures.updateRenderTargetMipmap( transmissionRenderTarget );\n\n\t\t\tif ( extensions.has( 'WEBGL_multisampled_render_to_texture' ) === false ) { // see #28131\n\n\t\t\t\tlet renderTargetNeedsUpdate = false;\n\n\t\t\t\tfor ( let i = 0, l = transmissiveObjects.length; i < l; i ++ ) {\n\n\t\t\t\t\tconst renderItem = transmissiveObjects[ i ];\n\n\t\t\t\t\tconst object = renderItem.object;\n\t\t\t\t\tconst geometry = renderItem.geometry;\n\t\t\t\t\tconst material = renderItem.material;\n\t\t\t\t\tconst group = renderItem.group;\n\n\t\t\t\t\tif ( material.side === DoubleSide && object.layers.test( camera.layers ) ) {\n\n\t\t\t\t\t\tconst currentSide = material.side;\n\n\t\t\t\t\t\tmaterial.side = BackSide;\n\t\t\t\t\t\tmaterial.needsUpdate = true;\n\n\t\t\t\t\t\trenderObject( object, scene, camera, geometry, material, group );\n\n\t\t\t\t\t\tmaterial.side = currentSide;\n\t\t\t\t\t\tmaterial.needsUpdate = true;\n\n\t\t\t\t\t\trenderTargetNeedsUpdate = true;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tif ( renderTargetNeedsUpdate === true ) {\n\n\t\t\t\t\ttextures.updateMultisampleRenderTarget( transmissionRenderTarget );\n\t\t\t\t\ttextures.updateRenderTargetMipmap( transmissionRenderTarget );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t_this.setRenderTarget( currentRenderTarget );\n\n\t\t\t_this.setClearColor( _currentClearColor, _currentClearAlpha );\n\n\t\t\tif ( currentCameraViewport !== undefined ) camera.viewport = currentCameraViewport;\n\n\t\t\t_this.toneMapping = currentToneMapping;\n\n\t\t}\n\n\t\tfunction renderObjects( renderList, scene, camera ) {\n\n\t\t\tconst overrideMaterial = scene.isScene === true ? scene.overrideMaterial : null;\n\n\t\t\tfor ( let i = 0, l = renderList.length; i < l; i ++ ) {\n\n\t\t\t\tconst renderItem = renderList[ i ];\n\n\t\t\t\tconst object = renderItem.object;\n\t\t\t\tconst geometry = renderItem.geometry;\n\t\t\t\tconst material = overrideMaterial === null ? renderItem.material : overrideMaterial;\n\t\t\t\tconst group = renderItem.group;\n\n\t\t\t\tif ( object.layers.test( camera.layers ) ) {\n\n\t\t\t\t\trenderObject( object, scene, camera, geometry, material, group );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction renderObject( object, scene, camera, geometry, material, group ) {\n\n\t\t\tobject.onBeforeRender( _this, scene, camera, geometry, material, group );\n\n\t\t\tobject.modelViewMatrix.multiplyMatrices( camera.matrixWorldInverse, object.matrixWorld );\n\t\t\tobject.normalMatrix.getNormalMatrix( object.modelViewMatrix );\n\n\t\t\tmaterial.onBeforeRender( _this, scene, camera, geometry, object, group );\n\n\t\t\tif ( material.transparent === true && material.side === DoubleSide && material.forceSinglePass === false ) {\n\n\t\t\t\tmaterial.side = BackSide;\n\t\t\t\tmaterial.needsUpdate = true;\n\t\t\t\t_this.renderBufferDirect( camera, scene, geometry, material, object, group );\n\n\t\t\t\tmaterial.side = FrontSide;\n\t\t\t\tmaterial.needsUpdate = true;\n\t\t\t\t_this.renderBufferDirect( camera, scene, geometry, material, object, group );\n\n\t\t\t\tmaterial.side = DoubleSide;\n\n\t\t\t} else {\n\n\t\t\t\t_this.renderBufferDirect( camera, scene, geometry, material, object, group );\n\n\t\t\t}\n\n\t\t\tobject.onAfterRender( _this, scene, camera, geometry, material, group );\n\n\t\t}\n\n\t\tfunction getProgram( material, scene, object ) {\n\n\t\t\tif ( scene.isScene !== true ) scene = _emptyScene; // scene could be a Mesh, Line, Points, ...\n\n\t\t\tconst materialProperties = properties.get( material );\n\n\t\t\tconst lights = currentRenderState.state.lights;\n\t\t\tconst shadowsArray = currentRenderState.state.shadowsArray;\n\n\t\t\tconst lightsStateVersion = lights.state.version;\n\n\t\t\tconst parameters = programCache.getParameters( material, lights.state, shadowsArray, scene, object );\n\t\t\tconst programCacheKey = programCache.getProgramCacheKey( parameters );\n\n\t\t\tlet programs = materialProperties.programs;\n\n\t\t\t// always update environment and fog - changing these trigger an getProgram call, but it's possible that the program doesn't change\n\n\t\t\tmaterialProperties.environment = material.isMeshStandardMaterial ? scene.environment : null;\n\t\t\tmaterialProperties.fog = scene.fog;\n\t\t\tmaterialProperties.envMap = ( material.isMeshStandardMaterial ? cubeuvmaps : cubemaps ).get( material.envMap || materialProperties.environment );\n\t\t\tmaterialProperties.envMapRotation = ( materialProperties.environment !== null && material.envMap === null ) ? scene.environmentRotation : material.envMapRotation;\n\n\t\t\tif ( programs === undefined ) {\n\n\t\t\t\t// new material\n\n\t\t\t\tmaterial.addEventListener( 'dispose', onMaterialDispose );\n\n\t\t\t\tprograms = new Map();\n\t\t\t\tmaterialProperties.programs = programs;\n\n\t\t\t}\n\n\t\t\tlet program = programs.get( programCacheKey );\n\n\t\t\tif ( program !== undefined ) {\n\n\t\t\t\t// early out if program and light state is identical\n\n\t\t\t\tif ( materialProperties.currentProgram === program && materialProperties.lightsStateVersion === lightsStateVersion ) {\n\n\t\t\t\t\tupdateCommonMaterialProperties( material, parameters );\n\n\t\t\t\t\treturn program;\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\tparameters.uniforms = programCache.getUniforms( material );\n\n\t\t\t\tmaterial.onBuild( object, parameters, _this );\n\n\t\t\t\tmaterial.onBeforeCompile( parameters, _this );\n\n\t\t\t\tprogram = programCache.acquireProgram( parameters, programCacheKey );\n\t\t\t\tprograms.set( programCacheKey, program );\n\n\t\t\t\tmaterialProperties.uniforms = parameters.uniforms;\n\n\t\t\t}\n\n\t\t\tconst uniforms = materialProperties.uniforms;\n\n\t\t\tif ( ( ! material.isShaderMaterial && ! material.isRawShaderMaterial ) || material.clipping === true ) {\n\n\t\t\t\tuniforms.clippingPlanes = clipping.uniform;\n\n\t\t\t}\n\n\t\t\tupdateCommonMaterialProperties( material, parameters );\n\n\t\t\t// store the light setup it was created for\n\n\t\t\tmaterialProperties.needsLights = materialNeedsLights( material );\n\t\t\tmaterialProperties.lightsStateVersion = lightsStateVersion;\n\n\t\t\tif ( materialProperties.needsLights ) {\n\n\t\t\t\t// wire up the material to this renderer's lighting state\n\n\t\t\t\tuniforms.ambientLightColor.value = lights.state.ambient;\n\t\t\t\tuniforms.lightProbe.value = lights.state.probe;\n\t\t\t\tuniforms.directionalLights.value = lights.state.directional;\n\t\t\t\tuniforms.directionalLightShadows.value = lights.state.directionalShadow;\n\t\t\t\tuniforms.spotLights.value = lights.state.spot;\n\t\t\t\tuniforms.spotLightShadows.value = lights.state.spotShadow;\n\t\t\t\tuniforms.rectAreaLights.value = lights.state.rectArea;\n\t\t\t\tuniforms.ltc_1.value = lights.state.rectAreaLTC1;\n\t\t\t\tuniforms.ltc_2.value = lights.state.rectAreaLTC2;\n\t\t\t\tuniforms.pointLights.value = lights.state.point;\n\t\t\t\tuniforms.pointLightShadows.value = lights.state.pointShadow;\n\t\t\t\tuniforms.hemisphereLights.value = lights.state.hemi;\n\n\t\t\t\tuniforms.directionalShadowMap.value = lights.state.directionalShadowMap;\n\t\t\t\tuniforms.directionalShadowMatrix.value = lights.state.directionalShadowMatrix;\n\t\t\t\tuniforms.spotShadowMap.value = lights.state.spotShadowMap;\n\t\t\t\tuniforms.spotLightMatrix.value = lights.state.spotLightMatrix;\n\t\t\t\tuniforms.spotLightMap.value = lights.state.spotLightMap;\n\t\t\t\tuniforms.pointShadowMap.value = lights.state.pointShadowMap;\n\t\t\t\tuniforms.pointShadowMatrix.value = lights.state.pointShadowMatrix;\n\t\t\t\t// TODO (abelnation): add area lights shadow info to uniforms\n\n\t\t\t}\n\n\t\t\tmaterialProperties.currentProgram = program;\n\t\t\tmaterialProperties.uniformsList = null;\n\n\t\t\treturn program;\n\n\t\t}\n\n\t\tfunction getUniformList( materialProperties ) {\n\n\t\t\tif ( materialProperties.uniformsList === null ) {\n\n\t\t\t\tconst progUniforms = materialProperties.currentProgram.getUniforms();\n\t\t\t\tmaterialProperties.uniformsList = WebGLUniforms.seqWithValue( progUniforms.seq, materialProperties.uniforms );\n\n\t\t\t}\n\n\t\t\treturn materialProperties.uniformsList;\n\n\t\t}\n\n\t\tfunction updateCommonMaterialProperties( material, parameters ) {\n\n\t\t\tconst materialProperties = properties.get( material );\n\n\t\t\tmaterialProperties.outputColorSpace = parameters.outputColorSpace;\n\t\t\tmaterialProperties.batching = parameters.batching;\n\t\t\tmaterialProperties.batchingColor = parameters.batchingColor;\n\t\t\tmaterialProperties.instancing = parameters.instancing;\n\t\t\tmaterialProperties.instancingColor = parameters.instancingColor;\n\t\t\tmaterialProperties.instancingMorph = parameters.instancingMorph;\n\t\t\tmaterialProperties.skinning = parameters.skinning;\n\t\t\tmaterialProperties.morphTargets = parameters.morphTargets;\n\t\t\tmaterialProperties.morphNormals = parameters.morphNormals;\n\t\t\tmaterialProperties.morphColors = parameters.morphColors;\n\t\t\tmaterialProperties.morphTargetsCount = parameters.morphTargetsCount;\n\t\t\tmaterialProperties.numClippingPlanes = parameters.numClippingPlanes;\n\t\t\tmaterialProperties.numIntersection = parameters.numClipIntersection;\n\t\t\tmaterialProperties.vertexAlphas = parameters.vertexAlphas;\n\t\t\tmaterialProperties.vertexTangents = parameters.vertexTangents;\n\t\t\tmaterialProperties.toneMapping = parameters.toneMapping;\n\n\t\t}\n\n\t\tfunction setProgram( camera, scene, geometry, material, object ) {\n\n\t\t\tif ( scene.isScene !== true ) scene = _emptyScene; // scene could be a Mesh, Line, Points, ...\n\n\t\t\ttextures.resetTextureUnits();\n\n\t\t\tconst fog = scene.fog;\n\t\t\tconst environment = material.isMeshStandardMaterial ? scene.environment : null;\n\t\t\tconst colorSpace = ( _currentRenderTarget === null ) ? _this.outputColorSpace : ( _currentRenderTarget.isXRRenderTarget === true ? _currentRenderTarget.texture.colorSpace : LinearSRGBColorSpace );\n\t\t\tconst envMap = ( material.isMeshStandardMaterial ? cubeuvmaps : cubemaps ).get( material.envMap || environment );\n\t\t\tconst vertexAlphas = material.vertexColors === true && !! geometry.attributes.color && geometry.attributes.color.itemSize === 4;\n\t\t\tconst vertexTangents = !! geometry.attributes.tangent && ( !! material.normalMap || material.anisotropy > 0 );\n\t\t\tconst morphTargets = !! geometry.morphAttributes.position;\n\t\t\tconst morphNormals = !! geometry.morphAttributes.normal;\n\t\t\tconst morphColors = !! geometry.morphAttributes.color;\n\n\t\t\tlet toneMapping = NoToneMapping;\n\n\t\t\tif ( material.toneMapped ) {\n\n\t\t\t\tif ( _currentRenderTarget === null || _currentRenderTarget.isXRRenderTarget === true ) {\n\n\t\t\t\t\ttoneMapping = _this.toneMapping;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tconst morphAttribute = geometry.morphAttributes.position || geometry.morphAttributes.normal || geometry.morphAttributes.color;\n\t\t\tconst morphTargetsCount = ( morphAttribute !== undefined ) ? morphAttribute.length : 0;\n\n\t\t\tconst materialProperties = properties.get( material );\n\t\t\tconst lights = currentRenderState.state.lights;\n\n\t\t\tif ( _clippingEnabled === true ) {\n\n\t\t\t\tif ( _localClippingEnabled === true || camera !== _currentCamera ) {\n\n\t\t\t\t\tconst useCache =\n\t\t\t\t\t\tcamera === _currentCamera &&\n\t\t\t\t\t\tmaterial.id === _currentMaterialId;\n\n\t\t\t\t\t// we might want to call this function with some ClippingGroup\n\t\t\t\t\t// object instead of the material, once it becomes feasible\n\t\t\t\t\t// (#8465, #8379)\n\t\t\t\t\tclipping.setState( material, camera, useCache );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t//\n\n\t\t\tlet needsProgramChange = false;\n\n\t\t\tif ( material.version === materialProperties.__version ) {\n\n\t\t\t\tif ( materialProperties.needsLights && ( materialProperties.lightsStateVersion !== lights.state.version ) ) {\n\n\t\t\t\t\tneedsProgramChange = true;\n\n\t\t\t\t} else if ( materialProperties.outputColorSpace !== colorSpace ) {\n\n\t\t\t\t\tneedsProgramChange = true;\n\n\t\t\t\t} else if ( object.isBatchedMesh && materialProperties.batching === false ) {\n\n\t\t\t\t\tneedsProgramChange = true;\n\n\t\t\t\t} else if ( ! object.isBatchedMesh && materialProperties.batching === true ) {\n\n\t\t\t\t\tneedsProgramChange = true;\n\n\t\t\t\t} else if ( object.isBatchedMesh && materialProperties.batchingColor === true && object.colorTexture === null ) {\n\n\t\t\t\t\tneedsProgramChange = true;\n\n\t\t\t\t} else if ( object.isBatchedMesh && materialProperties.batchingColor === false && object.colorTexture !== null ) {\n\n\t\t\t\t\tneedsProgramChange = true;\n\n\t\t\t\t} else if ( object.isInstancedMesh && materialProperties.instancing === false ) {\n\n\t\t\t\t\tneedsProgramChange = true;\n\n\t\t\t\t} else if ( ! object.isInstancedMesh && materialProperties.instancing === true ) {\n\n\t\t\t\t\tneedsProgramChange = true;\n\n\t\t\t\t} else if ( object.isSkinnedMesh && materialProperties.skinning === false ) {\n\n\t\t\t\t\tneedsProgramChange = true;\n\n\t\t\t\t} else if ( ! object.isSkinnedMesh && materialProperties.skinning === true ) {\n\n\t\t\t\t\tneedsProgramChange = true;\n\n\t\t\t\t} else if ( object.isInstancedMesh && materialProperties.instancingColor === true && object.instanceColor === null ) {\n\n\t\t\t\t\tneedsProgramChange = true;\n\n\t\t\t\t} else if ( object.isInstancedMesh && materialProperties.instancingColor === false && object.instanceColor !== null ) {\n\n\t\t\t\t\tneedsProgramChange = true;\n\n\t\t\t\t} else if ( object.isInstancedMesh && materialProperties.instancingMorph === true && object.morphTexture === null ) {\n\n\t\t\t\t\tneedsProgramChange = true;\n\n\t\t\t\t} else if ( object.isInstancedMesh && materialProperties.instancingMorph === false && object.morphTexture !== null ) {\n\n\t\t\t\t\tneedsProgramChange = true;\n\n\t\t\t\t} else if ( materialProperties.envMap !== envMap ) {\n\n\t\t\t\t\tneedsProgramChange = true;\n\n\t\t\t\t} else if ( material.fog === true && materialProperties.fog !== fog ) {\n\n\t\t\t\t\tneedsProgramChange = true;\n\n\t\t\t\t} else if ( materialProperties.numClippingPlanes !== undefined &&\n\t\t\t\t\t( materialProperties.numClippingPlanes !== clipping.numPlanes ||\n\t\t\t\t\tmaterialProperties.numIntersection !== clipping.numIntersection ) ) {\n\n\t\t\t\t\tneedsProgramChange = true;\n\n\t\t\t\t} else if ( materialProperties.vertexAlphas !== vertexAlphas ) {\n\n\t\t\t\t\tneedsProgramChange = true;\n\n\t\t\t\t} else if ( materialProperties.vertexTangents !== vertexTangents ) {\n\n\t\t\t\t\tneedsProgramChange = true;\n\n\t\t\t\t} else if ( materialProperties.morphTargets !== morphTargets ) {\n\n\t\t\t\t\tneedsProgramChange = true;\n\n\t\t\t\t} else if ( materialProperties.morphNormals !== morphNormals ) {\n\n\t\t\t\t\tneedsProgramChange = true;\n\n\t\t\t\t} else if ( materialProperties.morphColors !== morphColors ) {\n\n\t\t\t\t\tneedsProgramChange = true;\n\n\t\t\t\t} else if ( materialProperties.toneMapping !== toneMapping ) {\n\n\t\t\t\t\tneedsProgramChange = true;\n\n\t\t\t\t} else if ( materialProperties.morphTargetsCount !== morphTargetsCount ) {\n\n\t\t\t\t\tneedsProgramChange = true;\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\tneedsProgramChange = true;\n\t\t\t\tmaterialProperties.__version = material.version;\n\n\t\t\t}\n\n\t\t\t//\n\n\t\t\tlet program = materialProperties.currentProgram;\n\n\t\t\tif ( needsProgramChange === true ) {\n\n\t\t\t\tprogram = getProgram( material, scene, object );\n\n\t\t\t}\n\n\t\t\tlet refreshProgram = false;\n\t\t\tlet refreshMaterial = false;\n\t\t\tlet refreshLights = false;\n\n\t\t\tconst p_uniforms = program.getUniforms(),\n\t\t\t\tm_uniforms = materialProperties.uniforms;\n\n\t\t\tif ( state.useProgram( program.program ) ) {\n\n\t\t\t\trefreshProgram = true;\n\t\t\t\trefreshMaterial = true;\n\t\t\t\trefreshLights = true;\n\n\t\t\t}\n\n\t\t\tif ( material.id !== _currentMaterialId ) {\n\n\t\t\t\t_currentMaterialId = material.id;\n\n\t\t\t\trefreshMaterial = true;\n\n\t\t\t}\n\n\t\t\tif ( refreshProgram || _currentCamera !== camera ) {\n\n\t\t\t\t// common camera uniforms\n\n\t\t\t\tp_uniforms.setValue( _gl, 'projectionMatrix', camera.projectionMatrix );\n\t\t\t\tp_uniforms.setValue( _gl, 'viewMatrix', camera.matrixWorldInverse );\n\n\t\t\t\tconst uCamPos = p_uniforms.map.cameraPosition;\n\n\t\t\t\tif ( uCamPos !== undefined ) {\n\n\t\t\t\t\tuCamPos.setValue( _gl, _vector3.setFromMatrixPosition( camera.matrixWorld ) );\n\n\t\t\t\t}\n\n\t\t\t\tif ( capabilities.logarithmicDepthBuffer ) {\n\n\t\t\t\t\tp_uniforms.setValue( _gl, 'logDepthBufFC',\n\t\t\t\t\t\t2.0 / ( Math.log( camera.far + 1.0 ) / Math.LN2 ) );\n\n\t\t\t\t}\n\n\t\t\t\t// consider moving isOrthographic to UniformLib and WebGLMaterials, see https://github.com/mrdoob/three.js/pull/26467#issuecomment-1645185067\n\n\t\t\t\tif ( material.isMeshPhongMaterial ||\n\t\t\t\t\tmaterial.isMeshToonMaterial ||\n\t\t\t\t\tmaterial.isMeshLambertMaterial ||\n\t\t\t\t\tmaterial.isMeshBasicMaterial ||\n\t\t\t\t\tmaterial.isMeshStandardMaterial ||\n\t\t\t\t\tmaterial.isShaderMaterial ) {\n\n\t\t\t\t\tp_uniforms.setValue( _gl, 'isOrthographic', camera.isOrthographicCamera === true );\n\n\t\t\t\t}\n\n\t\t\t\tif ( _currentCamera !== camera ) {\n\n\t\t\t\t\t_currentCamera = camera;\n\n\t\t\t\t\t// lighting uniforms depend on the camera so enforce an update\n\t\t\t\t\t// now, in case this material supports lights - or later, when\n\t\t\t\t\t// the next material that does gets activated:\n\n\t\t\t\t\trefreshMaterial = true;\t\t// set to true on material change\n\t\t\t\t\trefreshLights = true;\t\t// remains set until update done\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// skinning and morph target uniforms must be set even if material didn't change\n\t\t\t// auto-setting of texture unit for bone and morph texture must go before other textures\n\t\t\t// otherwise textures used for skinning and morphing can take over texture units reserved for other material textures\n\n\t\t\tif ( object.isSkinnedMesh ) {\n\n\t\t\t\tp_uniforms.setOptional( _gl, object, 'bindMatrix' );\n\t\t\t\tp_uniforms.setOptional( _gl, object, 'bindMatrixInverse' );\n\n\t\t\t\tconst skeleton = object.skeleton;\n\n\t\t\t\tif ( skeleton ) {\n\n\t\t\t\t\tif ( skeleton.boneTexture === null ) skeleton.computeBoneTexture();\n\n\t\t\t\t\tp_uniforms.setValue( _gl, 'boneTexture', skeleton.boneTexture, textures );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tif ( object.isBatchedMesh ) {\n\n\t\t\t\tp_uniforms.setOptional( _gl, object, 'batchingTexture' );\n\t\t\t\tp_uniforms.setValue( _gl, 'batchingTexture', object._matricesTexture, textures );\n\n\t\t\t\tp_uniforms.setOptional( _gl, object, 'batchingColorTexture' );\n\t\t\t\tif ( object._colorsTexture !== null ) {\n\n\t\t\t\t\tp_uniforms.setValue( _gl, 'batchingColorTexture', object._colorsTexture, textures );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tconst morphAttributes = geometry.morphAttributes;\n\n\t\t\tif ( morphAttributes.position !== undefined || morphAttributes.normal !== undefined || ( morphAttributes.color !== undefined ) ) {\n\n\t\t\t\tmorphtargets.update( object, geometry, program );\n\n\t\t\t}\n\n\t\t\tif ( refreshMaterial || materialProperties.receiveShadow !== object.receiveShadow ) {\n\n\t\t\t\tmaterialProperties.receiveShadow = object.receiveShadow;\n\t\t\t\tp_uniforms.setValue( _gl, 'receiveShadow', object.receiveShadow );\n\n\t\t\t}\n\n\t\t\t// https://github.com/mrdoob/three.js/pull/24467#issuecomment-1209031512\n\n\t\t\tif ( material.isMeshGouraudMaterial && material.envMap !== null ) {\n\n\t\t\t\tm_uniforms.envMap.value = envMap;\n\n\t\t\t\tm_uniforms.flipEnvMap.value = ( envMap.isCubeTexture && envMap.isRenderTargetTexture === false ) ? - 1 : 1;\n\n\t\t\t}\n\n\t\t\tif ( material.isMeshStandardMaterial && material.envMap === null && scene.environment !== null ) {\n\n\t\t\t\tm_uniforms.envMapIntensity.value = scene.environmentIntensity;\n\n\t\t\t}\n\n\t\t\tif ( refreshMaterial ) {\n\n\t\t\t\tp_uniforms.setValue( _gl, 'toneMappingExposure', _this.toneMappingExposure );\n\n\t\t\t\tif ( materialProperties.needsLights ) {\n\n\t\t\t\t\t// the current material requires lighting info\n\n\t\t\t\t\t// note: all lighting uniforms are always set correctly\n\t\t\t\t\t// they simply reference the renderer's state for their\n\t\t\t\t\t// values\n\t\t\t\t\t//\n\t\t\t\t\t// use the current material's .needsUpdate flags to set\n\t\t\t\t\t// the GL state when required\n\n\t\t\t\t\tmarkUniformsLightsNeedsUpdate( m_uniforms, refreshLights );\n\n\t\t\t\t}\n\n\t\t\t\t// refresh uniforms common to several materials\n\n\t\t\t\tif ( fog && material.fog === true ) {\n\n\t\t\t\t\tmaterials.refreshFogUniforms( m_uniforms, fog );\n\n\t\t\t\t}\n\n\t\t\t\tmaterials.refreshMaterialUniforms( m_uniforms, material, _pixelRatio, _height, currentRenderState.state.transmissionRenderTarget[ camera.id ] );\n\n\t\t\t\tWebGLUniforms.upload( _gl, getUniformList( materialProperties ), m_uniforms, textures );\n\n\t\t\t}\n\n\t\t\tif ( material.isShaderMaterial && material.uniformsNeedUpdate === true ) {\n\n\t\t\t\tWebGLUniforms.upload( _gl, getUniformList( materialProperties ), m_uniforms, textures );\n\t\t\t\tmaterial.uniformsNeedUpdate = false;\n\n\t\t\t}\n\n\t\t\tif ( material.isSpriteMaterial ) {\n\n\t\t\t\tp_uniforms.setValue( _gl, 'center', object.center );\n\n\t\t\t}\n\n\t\t\t// common matrices\n\n\t\t\tp_uniforms.setValue( _gl, 'modelViewMatrix', object.modelViewMatrix );\n\t\t\tp_uniforms.setValue( _gl, 'normalMatrix', object.normalMatrix );\n\t\t\tp_uniforms.setValue( _gl, 'modelMatrix', object.matrixWorld );\n\n\t\t\t// UBOs\n\n\t\t\tif ( material.isShaderMaterial || material.isRawShaderMaterial ) {\n\n\t\t\t\tconst groups = material.uniformsGroups;\n\n\t\t\t\tfor ( let i = 0, l = groups.length; i < l; i ++ ) {\n\n\t\t\t\t\tconst group = groups[ i ];\n\n\t\t\t\t\tuniformsGroups.update( group, program );\n\t\t\t\t\tuniformsGroups.bind( group, program );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\treturn program;\n\n\t\t}\n\n\t\t// If uniforms are marked as clean, they don't need to be loaded to the GPU.\n\n\t\tfunction markUniformsLightsNeedsUpdate( uniforms, value ) {\n\n\t\t\tuniforms.ambientLightColor.needsUpdate = value;\n\t\t\tuniforms.lightProbe.needsUpdate = value;\n\n\t\t\tuniforms.directionalLights.needsUpdate = value;\n\t\t\tuniforms.directionalLightShadows.needsUpdate = value;\n\t\t\tuniforms.pointLights.needsUpdate = value;\n\t\t\tuniforms.pointLightShadows.needsUpdate = value;\n\t\t\tuniforms.spotLights.needsUpdate = value;\n\t\t\tuniforms.spotLightShadows.needsUpdate = value;\n\t\t\tuniforms.rectAreaLights.needsUpdate = value;\n\t\t\tuniforms.hemisphereLights.needsUpdate = value;\n\n\t\t}\n\n\t\tfunction materialNeedsLights( material ) {\n\n\t\t\treturn material.isMeshLambertMaterial || material.isMeshToonMaterial || material.isMeshPhongMaterial ||\n\t\t\t\tmaterial.isMeshStandardMaterial || material.isShadowMaterial ||\n\t\t\t\t( material.isShaderMaterial && material.lights === true );\n\n\t\t}\n\n\t\tthis.getActiveCubeFace = function () {\n\n\t\t\treturn _currentActiveCubeFace;\n\n\t\t};\n\n\t\tthis.getActiveMipmapLevel = function () {\n\n\t\t\treturn _currentActiveMipmapLevel;\n\n\t\t};\n\n\t\tthis.getRenderTarget = function () {\n\n\t\t\treturn _currentRenderTarget;\n\n\t\t};\n\n\t\tthis.setRenderTargetTextures = function ( renderTarget, colorTexture, depthTexture ) {\n\n\t\t\tproperties.get( renderTarget.texture ).__webglTexture = colorTexture;\n\t\t\tproperties.get( renderTarget.depthTexture ).__webglTexture = depthTexture;\n\n\t\t\tconst renderTargetProperties = properties.get( renderTarget );\n\t\t\trenderTargetProperties.__hasExternalTextures = true;\n\n\t\t\trenderTargetProperties.__autoAllocateDepthBuffer = depthTexture === undefined;\n\n\t\t\tif ( ! renderTargetProperties.__autoAllocateDepthBuffer ) {\n\n\t\t\t\t// The multisample_render_to_texture extension doesn't work properly if there\n\t\t\t\t// are midframe flushes and an external depth buffer. Disable use of the extension.\n\t\t\t\tif ( extensions.has( 'WEBGL_multisampled_render_to_texture' ) === true ) {\n\n\t\t\t\t\tconsole.warn( 'THREE.WebGLRenderer: Render-to-texture extension was disabled because an external texture was provided' );\n\t\t\t\t\trenderTargetProperties.__useRenderToTexture = false;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t};\n\n\t\tthis.setRenderTargetFramebuffer = function ( renderTarget, defaultFramebuffer ) {\n\n\t\t\tconst renderTargetProperties = properties.get( renderTarget );\n\t\t\trenderTargetProperties.__webglFramebuffer = defaultFramebuffer;\n\t\t\trenderTargetProperties.__useDefaultFramebuffer = defaultFramebuffer === undefined;\n\n\t\t};\n\n\t\tthis.setRenderTarget = function ( renderTarget, activeCubeFace = 0, activeMipmapLevel = 0 ) {\n\n\t\t\t_currentRenderTarget = renderTarget;\n\t\t\t_currentActiveCubeFace = activeCubeFace;\n\t\t\t_currentActiveMipmapLevel = activeMipmapLevel;\n\n\t\t\tlet useDefaultFramebuffer = true;\n\t\t\tlet framebuffer = null;\n\t\t\tlet isCube = false;\n\t\t\tlet isRenderTarget3D = false;\n\n\t\t\tif ( renderTarget ) {\n\n\t\t\t\tconst renderTargetProperties = properties.get( renderTarget );\n\n\t\t\t\tif ( renderTargetProperties.__useDefaultFramebuffer !== undefined ) {\n\n\t\t\t\t\t// We need to make sure to rebind the framebuffer.\n\t\t\t\t\tstate.bindFramebuffer( _gl.FRAMEBUFFER, null );\n\t\t\t\t\tuseDefaultFramebuffer = false;\n\n\t\t\t\t} else if ( renderTargetProperties.__webglFramebuffer === undefined ) {\n\n\t\t\t\t\ttextures.setupRenderTarget( renderTarget );\n\n\t\t\t\t} else if ( renderTargetProperties.__hasExternalTextures ) {\n\n\t\t\t\t\t// Color and depth texture must be rebound in order for the swapchain to update.\n\t\t\t\t\ttextures.rebindTextures( renderTarget, properties.get( renderTarget.texture ).__webglTexture, properties.get( renderTarget.depthTexture ).__webglTexture );\n\n\t\t\t\t}\n\n\t\t\t\tconst texture = renderTarget.texture;\n\n\t\t\t\tif ( texture.isData3DTexture || texture.isDataArrayTexture || texture.isCompressedArrayTexture ) {\n\n\t\t\t\t\tisRenderTarget3D = true;\n\n\t\t\t\t}\n\n\t\t\t\tconst __webglFramebuffer = properties.get( renderTarget ).__webglFramebuffer;\n\n\t\t\t\tif ( renderTarget.isWebGLCubeRenderTarget ) {\n\n\t\t\t\t\tif ( Array.isArray( __webglFramebuffer[ activeCubeFace ] ) ) {\n\n\t\t\t\t\t\tframebuffer = __webglFramebuffer[ activeCubeFace ][ activeMipmapLevel ];\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tframebuffer = __webglFramebuffer[ activeCubeFace ];\n\n\t\t\t\t\t}\n\n\t\t\t\t\tisCube = true;\n\n\t\t\t\t} else if ( ( renderTarget.samples > 0 ) && textures.useMultisampledRTT( renderTarget ) === false ) {\n\n\t\t\t\t\tframebuffer = properties.get( renderTarget ).__webglMultisampledFramebuffer;\n\n\t\t\t\t} else {\n\n\t\t\t\t\tif ( Array.isArray( __webglFramebuffer ) ) {\n\n\t\t\t\t\t\tframebuffer = __webglFramebuffer[ activeMipmapLevel ];\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tframebuffer = __webglFramebuffer;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\t_currentViewport.copy( renderTarget.viewport );\n\t\t\t\t_currentScissor.copy( renderTarget.scissor );\n\t\t\t\t_currentScissorTest = renderTarget.scissorTest;\n\n\t\t\t} else {\n\n\t\t\t\t_currentViewport.copy( _viewport ).multiplyScalar( _pixelRatio ).floor();\n\t\t\t\t_currentScissor.copy( _scissor ).multiplyScalar( _pixelRatio ).floor();\n\t\t\t\t_currentScissorTest = _scissorTest;\n\n\t\t\t}\n\n\t\t\tconst framebufferBound = state.bindFramebuffer( _gl.FRAMEBUFFER, framebuffer );\n\n\t\t\tif ( framebufferBound && useDefaultFramebuffer ) {\n\n\t\t\t\tstate.drawBuffers( renderTarget, framebuffer );\n\n\t\t\t}\n\n\t\t\tstate.viewport( _currentViewport );\n\t\t\tstate.scissor( _currentScissor );\n\t\t\tstate.setScissorTest( _currentScissorTest );\n\n\t\t\tif ( isCube ) {\n\n\t\t\t\tconst textureProperties = properties.get( renderTarget.texture );\n\t\t\t\t_gl.framebufferTexture2D( _gl.FRAMEBUFFER, _gl.COLOR_ATTACHMENT0, _gl.TEXTURE_CUBE_MAP_POSITIVE_X + activeCubeFace, textureProperties.__webglTexture, activeMipmapLevel );\n\n\t\t\t} else if ( isRenderTarget3D ) {\n\n\t\t\t\tconst textureProperties = properties.get( renderTarget.texture );\n\t\t\t\tconst layer = activeCubeFace || 0;\n\t\t\t\t_gl.framebufferTextureLayer( _gl.FRAMEBUFFER, _gl.COLOR_ATTACHMENT0, textureProperties.__webglTexture, activeMipmapLevel || 0, layer );\n\n\t\t\t}\n\n\t\t\t_currentMaterialId = - 1; // reset current material to ensure correct uniform bindings\n\n\t\t};\n\n\t\tthis.readRenderTargetPixels = function ( renderTarget, x, y, width, height, buffer, activeCubeFaceIndex ) {\n\n\t\t\tif ( ! ( renderTarget && renderTarget.isWebGLRenderTarget ) ) {\n\n\t\t\t\tconsole.error( 'THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not THREE.WebGLRenderTarget.' );\n\t\t\t\treturn;\n\n\t\t\t}\n\n\t\t\tlet framebuffer = properties.get( renderTarget ).__webglFramebuffer;\n\n\t\t\tif ( renderTarget.isWebGLCubeRenderTarget && activeCubeFaceIndex !== undefined ) {\n\n\t\t\t\tframebuffer = framebuffer[ activeCubeFaceIndex ];\n\n\t\t\t}\n\n\t\t\tif ( framebuffer ) {\n\n\t\t\t\tstate.bindFramebuffer( _gl.FRAMEBUFFER, framebuffer );\n\n\t\t\t\ttry {\n\n\t\t\t\t\tconst texture = renderTarget.texture;\n\t\t\t\t\tconst textureFormat = texture.format;\n\t\t\t\t\tconst textureType = texture.type;\n\n\t\t\t\t\tif ( ! capabilities.textureFormatReadable( textureFormat ) ) {\n\n\t\t\t\t\t\tconsole.error( 'THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not in RGBA or implementation defined format.' );\n\t\t\t\t\t\treturn;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( ! capabilities.textureTypeReadable( textureType ) ) {\n\n\t\t\t\t\t\tconsole.error( 'THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not in UnsignedByteType or implementation defined type.' );\n\t\t\t\t\t\treturn;\n\n\t\t\t\t\t}\n\n\t\t\t\t\t// the following if statement ensures valid read requests (no out-of-bounds pixels, see #8604)\n\n\t\t\t\t\tif ( ( x >= 0 && x <= ( renderTarget.width - width ) ) && ( y >= 0 && y <= ( renderTarget.height - height ) ) ) {\n\n\t\t\t\t\t\t_gl.readPixels( x, y, width, height, utils.convert( textureFormat ), utils.convert( textureType ), buffer );\n\n\t\t\t\t\t}\n\n\t\t\t\t} finally {\n\n\t\t\t\t\t// restore framebuffer of current render target if necessary\n\n\t\t\t\t\tconst framebuffer = ( _currentRenderTarget !== null ) ? properties.get( _currentRenderTarget ).__webglFramebuffer : null;\n\t\t\t\t\tstate.bindFramebuffer( _gl.FRAMEBUFFER, framebuffer );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t};\n\n\t\tthis.readRenderTargetPixelsAsync = async function ( renderTarget, x, y, width, height, buffer, activeCubeFaceIndex ) {\n\n\t\t\tif ( ! ( renderTarget && renderTarget.isWebGLRenderTarget ) ) {\n\n\t\t\t\tthrow new Error( 'THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not THREE.WebGLRenderTarget.' );\n\n\t\t\t}\n\n\t\t\tlet framebuffer = properties.get( renderTarget ).__webglFramebuffer;\n\t\t\tif ( renderTarget.isWebGLCubeRenderTarget && activeCubeFaceIndex !== undefined ) {\n\n\t\t\t\tframebuffer = framebuffer[ activeCubeFaceIndex ];\n\n\t\t\t}\n\n\t\t\tif ( framebuffer ) {\n\n\t\t\t\tstate.bindFramebuffer( _gl.FRAMEBUFFER, framebuffer );\n\n\t\t\t\ttry {\n\n\t\t\t\t\tconst texture = renderTarget.texture;\n\t\t\t\t\tconst textureFormat = texture.format;\n\t\t\t\t\tconst textureType = texture.type;\n\n\t\t\t\t\tif ( ! capabilities.textureFormatReadable( textureFormat ) ) {\n\n\t\t\t\t\t\tthrow new Error( 'THREE.WebGLRenderer.readRenderTargetPixelsAsync: renderTarget is not in RGBA or implementation defined format.' );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( ! capabilities.textureTypeReadable( textureType ) ) {\n\n\t\t\t\t\t\tthrow new Error( 'THREE.WebGLRenderer.readRenderTargetPixelsAsync: renderTarget is not in UnsignedByteType or implementation defined type.' );\n\n\t\t\t\t\t}\n\n\t\t\t\t\t// the following if statement ensures valid read requests (no out-of-bounds pixels, see #8604)\n\t\t\t\t\tif ( ( x >= 0 && x <= ( renderTarget.width - width ) ) && ( y >= 0 && y <= ( renderTarget.height - height ) ) ) {\n\n\t\t\t\t\t\tconst glBuffer = _gl.createBuffer();\n\t\t\t\t\t\t_gl.bindBuffer( _gl.PIXEL_PACK_BUFFER, glBuffer );\n\t\t\t\t\t\t_gl.bufferData( _gl.PIXEL_PACK_BUFFER, buffer.byteLength, _gl.STREAM_READ );\n\t\t\t\t\t\t_gl.readPixels( x, y, width, height, utils.convert( textureFormat ), utils.convert( textureType ), 0 );\n\t\t\t\t\t\t_gl.flush();\n\n\t\t\t\t\t\t// check if the commands have finished every 8 ms\n\t\t\t\t\t\tconst sync = _gl.fenceSync( _gl.SYNC_GPU_COMMANDS_COMPLETE, 0 );\n\t\t\t\t\t\tawait probeAsync( _gl, sync, 4 );\n\n\t\t\t\t\t\ttry {\n\n\t\t\t\t\t\t\t_gl.bindBuffer( _gl.PIXEL_PACK_BUFFER, glBuffer );\n\t\t\t\t\t\t\t_gl.getBufferSubData( _gl.PIXEL_PACK_BUFFER, 0, buffer );\n\n\t\t\t\t\t\t} finally {\n\n\t\t\t\t\t\t\t_gl.deleteBuffer( glBuffer );\n\t\t\t\t\t\t\t_gl.deleteSync( sync );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\treturn buffer;\n\n\t\t\t\t\t}\n\n\t\t\t\t} finally {\n\n\t\t\t\t\t// restore framebuffer of current render target if necessary\n\n\t\t\t\t\tconst framebuffer = ( _currentRenderTarget !== null ) ? properties.get( _currentRenderTarget ).__webglFramebuffer : null;\n\t\t\t\t\tstate.bindFramebuffer( _gl.FRAMEBUFFER, framebuffer );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t};\n\n\t\tthis.copyFramebufferToTexture = function ( texture, position = null, level = 0 ) {\n\n\t\t\t// support previous signature with position first\n\t\t\tif ( texture.isTexture !== true ) {\n\n\t\t\t\t// @deprecated, r165\n\t\t\t\tconsole.warn( 'WebGLRenderer: copyFramebufferToTexture function signature has changed.' );\n\n\t\t\t\tposition = arguments[ 0 ] || null;\n\t\t\t\ttexture = arguments[ 1 ];\n\n\t\t\t}\n\n\t\t\tconst levelScale = Math.pow( 2, - level );\n\t\t\tconst width = Math.floor( texture.image.width * levelScale );\n\t\t\tconst height = Math.floor( texture.image.height * levelScale );\n\n\t\t\tconst x = position !== null ? position.x : 0;\n\t\t\tconst y = position !== null ? position.y : 0;\n\n\t\t\ttextures.setTexture2D( texture, 0 );\n\n\t\t\t_gl.copyTexSubImage2D( _gl.TEXTURE_2D, level, 0, 0, x, y, width, height );\n\n\t\t\tstate.unbindTexture();\n\n\t\t};\n\n\t\tthis.copyTextureToTexture = function ( srcTexture, dstTexture, srcRegion = null, dstPosition = null, level = 0 ) {\n\n\t\t\t// support previous signature with dstPosition first\n\t\t\tif ( srcTexture.isTexture !== true ) {\n\n\t\t\t\t// @deprecated, r165\n\t\t\t\tconsole.warn( 'WebGLRenderer: copyTextureToTexture function signature has changed.' );\n\n\t\t\t\tdstPosition = arguments[ 0 ] || null;\n\t\t\t\tsrcTexture = arguments[ 1 ];\n\t\t\t\tdstTexture = arguments[ 2 ];\n\t\t\t\tlevel = arguments[ 3 ] || 0;\n\t\t\t\tsrcRegion = null;\n\n\t\t\t}\n\n\t\t\tlet width, height, minX, minY;\n\t\t\tlet dstX, dstY;\n\t\t\tif ( srcRegion !== null ) {\n\n\t\t\t\twidth = srcRegion.max.x - srcRegion.min.x;\n\t\t\t\theight = srcRegion.max.y - srcRegion.min.y;\n\t\t\t\tminX = srcRegion.min.x;\n\t\t\t\tminY = srcRegion.min.y;\n\n\t\t\t} else {\n\n\t\t\t\twidth = srcTexture.image.width;\n\t\t\t\theight = srcTexture.image.height;\n\t\t\t\tminX = 0;\n\t\t\t\tminY = 0;\n\n\t\t\t}\n\n\t\t\tif ( dstPosition !== null ) {\n\n\t\t\t\tdstX = dstPosition.x;\n\t\t\t\tdstY = dstPosition.y;\n\n\t\t\t} else {\n\n\t\t\t\tdstX = 0;\n\t\t\t\tdstY = 0;\n\n\t\t\t}\n\n\t\t\tconst glFormat = utils.convert( dstTexture.format );\n\t\t\tconst glType = utils.convert( dstTexture.type );\n\n\t\t\ttextures.setTexture2D( dstTexture, 0 );\n\n\t\t\t// As another texture upload may have changed pixelStorei\n\t\t\t// parameters, make sure they are correct for the dstTexture\n\t\t\t_gl.pixelStorei( _gl.UNPACK_FLIP_Y_WEBGL, dstTexture.flipY );\n\t\t\t_gl.pixelStorei( _gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, dstTexture.premultiplyAlpha );\n\t\t\t_gl.pixelStorei( _gl.UNPACK_ALIGNMENT, dstTexture.unpackAlignment );\n\n\t\t\tconst currentUnpackRowLen = _gl.getParameter( _gl.UNPACK_ROW_LENGTH );\n\t\t\tconst currentUnpackImageHeight = _gl.getParameter( _gl.UNPACK_IMAGE_HEIGHT );\n\t\t\tconst currentUnpackSkipPixels = _gl.getParameter( _gl.UNPACK_SKIP_PIXELS );\n\t\t\tconst currentUnpackSkipRows = _gl.getParameter( _gl.UNPACK_SKIP_ROWS );\n\t\t\tconst currentUnpackSkipImages = _gl.getParameter( _gl.UNPACK_SKIP_IMAGES );\n\n\t\t\tconst image = srcTexture.isCompressedTexture ? srcTexture.mipmaps[ level ] : srcTexture.image;\n\n\t\t\t_gl.pixelStorei( _gl.UNPACK_ROW_LENGTH, image.width );\n\t\t\t_gl.pixelStorei( _gl.UNPACK_IMAGE_HEIGHT, image.height );\n\t\t\t_gl.pixelStorei( _gl.UNPACK_SKIP_PIXELS, minX );\n\t\t\t_gl.pixelStorei( _gl.UNPACK_SKIP_ROWS, minY );\n\n\t\t\tif ( srcTexture.isDataTexture ) {\n\n\t\t\t\t_gl.texSubImage2D( _gl.TEXTURE_2D, level, dstX, dstY, width, height, glFormat, glType, image.data );\n\n\t\t\t} else {\n\n\t\t\t\tif ( srcTexture.isCompressedTexture ) {\n\n\t\t\t\t\t_gl.compressedTexSubImage2D( _gl.TEXTURE_2D, level, dstX, dstY, image.width, image.height, glFormat, image.data );\n\n\t\t\t\t} else {\n\n\t\t\t\t\t_gl.texSubImage2D( _gl.TEXTURE_2D, level, dstX, dstY, glFormat, glType, image );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t_gl.pixelStorei( _gl.UNPACK_ROW_LENGTH, currentUnpackRowLen );\n\t\t\t_gl.pixelStorei( _gl.UNPACK_IMAGE_HEIGHT, currentUnpackImageHeight );\n\t\t\t_gl.pixelStorei( _gl.UNPACK_SKIP_PIXELS, currentUnpackSkipPixels );\n\t\t\t_gl.pixelStorei( _gl.UNPACK_SKIP_ROWS, currentUnpackSkipRows );\n\t\t\t_gl.pixelStorei( _gl.UNPACK_SKIP_IMAGES, currentUnpackSkipImages );\n\n\t\t\t// Generate mipmaps only when copying level 0\n\t\t\tif ( level === 0 && dstTexture.generateMipmaps ) _gl.generateMipmap( _gl.TEXTURE_2D );\n\n\t\t\tstate.unbindTexture();\n\n\t\t};\n\n\t\tthis.copyTextureToTexture3D = function ( srcTexture, dstTexture, srcRegion = null, dstPosition = null, level = 0 ) {\n\n\t\t\t// support previous signature with source box first\n\t\t\tif ( srcTexture.isTexture !== true ) {\n\n\t\t\t\t// @deprecated, r165\n\t\t\t\tconsole.warn( 'WebGLRenderer: copyTextureToTexture3D function signature has changed.' );\n\n\t\t\t\tsrcRegion = arguments[ 0 ] || null;\n\t\t\t\tdstPosition = arguments[ 1 ] || null;\n\t\t\t\tsrcTexture = arguments[ 2 ];\n\t\t\t\tdstTexture = arguments[ 3 ];\n\t\t\t\tlevel = arguments[ 4 ] || 0;\n\n\t\t\t}\n\n\t\t\tlet width, height, depth, minX, minY, minZ;\n\t\t\tlet dstX, dstY, dstZ;\n\t\t\tconst image = srcTexture.isCompressedTexture ? srcTexture.mipmaps[ level ] : srcTexture.image;\n\t\t\tif ( srcRegion !== null ) {\n\n\t\t\t\twidth = srcRegion.max.x - srcRegion.min.x;\n\t\t\t\theight = srcRegion.max.y - srcRegion.min.y;\n\t\t\t\tdepth = srcRegion.max.z - srcRegion.min.z;\n\t\t\t\tminX = srcRegion.min.x;\n\t\t\t\tminY = srcRegion.min.y;\n\t\t\t\tminZ = srcRegion.min.z;\n\n\t\t\t} else {\n\n\t\t\t\twidth = image.width;\n\t\t\t\theight = image.height;\n\t\t\t\tdepth = image.depth;\n\t\t\t\tminX = 0;\n\t\t\t\tminY = 0;\n\t\t\t\tminZ = 0;\n\n\t\t\t}\n\n\t\t\tif ( dstPosition !== null ) {\n\n\t\t\t\tdstX = dstPosition.x;\n\t\t\t\tdstY = dstPosition.y;\n\t\t\t\tdstZ = dstPosition.z;\n\n\t\t\t} else {\n\n\t\t\t\tdstX = 0;\n\t\t\t\tdstY = 0;\n\t\t\t\tdstZ = 0;\n\n\t\t\t}\n\n\t\t\tconst glFormat = utils.convert( dstTexture.format );\n\t\t\tconst glType = utils.convert( dstTexture.type );\n\t\t\tlet glTarget;\n\n\t\t\tif ( dstTexture.isData3DTexture ) {\n\n\t\t\t\ttextures.setTexture3D( dstTexture, 0 );\n\t\t\t\tglTarget = _gl.TEXTURE_3D;\n\n\t\t\t} else if ( dstTexture.isDataArrayTexture || dstTexture.isCompressedArrayTexture ) {\n\n\t\t\t\ttextures.setTexture2DArray( dstTexture, 0 );\n\t\t\t\tglTarget = _gl.TEXTURE_2D_ARRAY;\n\n\t\t\t} else {\n\n\t\t\t\tconsole.warn( 'THREE.WebGLRenderer.copyTextureToTexture3D: only supports THREE.DataTexture3D and THREE.DataTexture2DArray.' );\n\t\t\t\treturn;\n\n\t\t\t}\n\n\t\t\t_gl.pixelStorei( _gl.UNPACK_FLIP_Y_WEBGL, dstTexture.flipY );\n\t\t\t_gl.pixelStorei( _gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, dstTexture.premultiplyAlpha );\n\t\t\t_gl.pixelStorei( _gl.UNPACK_ALIGNMENT, dstTexture.unpackAlignment );\n\n\t\t\tconst currentUnpackRowLen = _gl.getParameter( _gl.UNPACK_ROW_LENGTH );\n\t\t\tconst currentUnpackImageHeight = _gl.getParameter( _gl.UNPACK_IMAGE_HEIGHT );\n\t\t\tconst currentUnpackSkipPixels = _gl.getParameter( _gl.UNPACK_SKIP_PIXELS );\n\t\t\tconst currentUnpackSkipRows = _gl.getParameter( _gl.UNPACK_SKIP_ROWS );\n\t\t\tconst currentUnpackSkipImages = _gl.getParameter( _gl.UNPACK_SKIP_IMAGES );\n\n\t\t\t_gl.pixelStorei( _gl.UNPACK_ROW_LENGTH, image.width );\n\t\t\t_gl.pixelStorei( _gl.UNPACK_IMAGE_HEIGHT, image.height );\n\t\t\t_gl.pixelStorei( _gl.UNPACK_SKIP_PIXELS, minX );\n\t\t\t_gl.pixelStorei( _gl.UNPACK_SKIP_ROWS, minY );\n\t\t\t_gl.pixelStorei( _gl.UNPACK_SKIP_IMAGES, minZ );\n\n\t\t\tif ( srcTexture.isDataTexture || srcTexture.isData3DTexture ) {\n\n\t\t\t\t_gl.texSubImage3D( glTarget, level, dstX, dstY, dstZ, width, height, depth, glFormat, glType, image.data );\n\n\t\t\t} else {\n\n\t\t\t\tif ( dstTexture.isCompressedArrayTexture ) {\n\n\t\t\t\t\t_gl.compressedTexSubImage3D( glTarget, level, dstX, dstY, dstZ, width, height, depth, glFormat, image.data );\n\n\t\t\t\t} else {\n\n\t\t\t\t\t_gl.texSubImage3D( glTarget, level, dstX, dstY, dstZ, width, height, depth, glFormat, glType, image );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t_gl.pixelStorei( _gl.UNPACK_ROW_LENGTH, currentUnpackRowLen );\n\t\t\t_gl.pixelStorei( _gl.UNPACK_IMAGE_HEIGHT, currentUnpackImageHeight );\n\t\t\t_gl.pixelStorei( _gl.UNPACK_SKIP_PIXELS, currentUnpackSkipPixels );\n\t\t\t_gl.pixelStorei( _gl.UNPACK_SKIP_ROWS, currentUnpackSkipRows );\n\t\t\t_gl.pixelStorei( _gl.UNPACK_SKIP_IMAGES, currentUnpackSkipImages );\n\n\t\t\t// Generate mipmaps only when copying level 0\n\t\t\tif ( level === 0 && dstTexture.generateMipmaps ) _gl.generateMipmap( glTarget );\n\n\t\t\tstate.unbindTexture();\n\n\t\t};\n\n\t\tthis.initRenderTarget = function ( target ) {\n\n\t\t\tif ( properties.get( target ).__webglFramebuffer === undefined ) {\n\n\t\t\t\ttextures.setupRenderTarget( target );\n\n\t\t\t}\n\n\t\t};\n\n\t\tthis.initTexture = function ( texture ) {\n\n\t\t\tif ( texture.isCubeTexture ) {\n\n\t\t\t\ttextures.setTextureCube( texture, 0 );\n\n\t\t\t} else if ( texture.isData3DTexture ) {\n\n\t\t\t\ttextures.setTexture3D( texture, 0 );\n\n\t\t\t} else if ( texture.isDataArrayTexture || texture.isCompressedArrayTexture ) {\n\n\t\t\t\ttextures.setTexture2DArray( texture, 0 );\n\n\t\t\t} else {\n\n\t\t\t\ttextures.setTexture2D( texture, 0 );\n\n\t\t\t}\n\n\t\t\tstate.unbindTexture();\n\n\t\t};\n\n\t\tthis.resetState = function () {\n\n\t\t\t_currentActiveCubeFace = 0;\n\t\t\t_currentActiveMipmapLevel = 0;\n\t\t\t_currentRenderTarget = null;\n\n\t\t\tstate.reset();\n\t\t\tbindingStates.reset();\n\n\t\t};\n\n\t\tif ( typeof __THREE_DEVTOOLS__ !== 'undefined' ) {\n\n\t\t\t__THREE_DEVTOOLS__.dispatchEvent( new CustomEvent( 'observe', { detail: this } ) );\n\n\t\t}\n\n\t}\n\n\tget coordinateSystem() {\n\n\t\treturn WebGLCoordinateSystem;\n\n\t}\n\n\tget outputColorSpace() {\n\n\t\treturn this._outputColorSpace;\n\n\t}\n\n\tset outputColorSpace( colorSpace ) {\n\n\t\tthis._outputColorSpace = colorSpace;\n\n\t\tconst gl = this.getContext();\n\t\tgl.drawingBufferColorSpace = colorSpace === DisplayP3ColorSpace ? 'display-p3' : 'srgb';\n\t\tgl.unpackColorSpace = ColorManagement.workingColorSpace === LinearDisplayP3ColorSpace ? 'display-p3' : 'srgb';\n\n\t}\n\n}\n\nclass FogExp2 {\n\n\tconstructor( color, density = 0.00025 ) {\n\n\t\tthis.isFogExp2 = true;\n\n\t\tthis.name = '';\n\n\t\tthis.color = new Color( color );\n\t\tthis.density = density;\n\n\t}\n\n\tclone() {\n\n\t\treturn new FogExp2( this.color, this.density );\n\n\t}\n\n\ttoJSON( /* meta */ ) {\n\n\t\treturn {\n\t\t\ttype: 'FogExp2',\n\t\t\tname: this.name,\n\t\t\tcolor: this.color.getHex(),\n\t\t\tdensity: this.density\n\t\t};\n\n\t}\n\n}\n\nclass Fog {\n\n\tconstructor( color, near = 1, far = 1000 ) {\n\n\t\tthis.isFog = true;\n\n\t\tthis.name = '';\n\n\t\tthis.color = new Color( color );\n\n\t\tthis.near = near;\n\t\tthis.far = far;\n\n\t}\n\n\tclone() {\n\n\t\treturn new Fog( this.color, this.near, this.far );\n\n\t}\n\n\ttoJSON( /* meta */ ) {\n\n\t\treturn {\n\t\t\ttype: 'Fog',\n\t\t\tname: this.name,\n\t\t\tcolor: this.color.getHex(),\n\t\t\tnear: this.near,\n\t\t\tfar: this.far\n\t\t};\n\n\t}\n\n}\n\nclass Scene extends Object3D {\n\n\tconstructor() {\n\n\t\tsuper();\n\n\t\tthis.isScene = true;\n\n\t\tthis.type = 'Scene';\n\n\t\tthis.background = null;\n\t\tthis.environment = null;\n\t\tthis.fog = null;\n\n\t\tthis.backgroundBlurriness = 0;\n\t\tthis.backgroundIntensity = 1;\n\t\tthis.backgroundRotation = new Euler();\n\n\t\tthis.environmentIntensity = 1;\n\t\tthis.environmentRotation = new Euler();\n\n\t\tthis.overrideMaterial = null;\n\n\t\tif ( typeof __THREE_DEVTOOLS__ !== 'undefined' ) {\n\n\t\t\t__THREE_DEVTOOLS__.dispatchEvent( new CustomEvent( 'observe', { detail: this } ) );\n\n\t\t}\n\n\t}\n\n\tcopy( source, recursive ) {\n\n\t\tsuper.copy( source, recursive );\n\n\t\tif ( source.background !== null ) this.background = source.background.clone();\n\t\tif ( source.environment !== null ) this.environment = source.environment.clone();\n\t\tif ( source.fog !== null ) this.fog = source.fog.clone();\n\n\t\tthis.backgroundBlurriness = source.backgroundBlurriness;\n\t\tthis.backgroundIntensity = source.backgroundIntensity;\n\t\tthis.backgroundRotation.copy( source.backgroundRotation );\n\n\t\tthis.environmentIntensity = source.environmentIntensity;\n\t\tthis.environmentRotation.copy( source.environmentRotation );\n\n\t\tif ( source.overrideMaterial !== null ) this.overrideMaterial = source.overrideMaterial.clone();\n\n\t\tthis.matrixAutoUpdate = source.matrixAutoUpdate;\n\n\t\treturn this;\n\n\t}\n\n\ttoJSON( meta ) {\n\n\t\tconst data = super.toJSON( meta );\n\n\t\tif ( this.fog !== null ) data.object.fog = this.fog.toJSON();\n\n\t\tif ( this.backgroundBlurriness > 0 ) data.object.backgroundBlurriness = this.backgroundBlurriness;\n\t\tif ( this.backgroundIntensity !== 1 ) data.object.backgroundIntensity = this.backgroundIntensity;\n\t\tdata.object.backgroundRotation = this.backgroundRotation.toArray();\n\n\t\tif ( this.environmentIntensity !== 1 ) data.object.environmentIntensity = this.environmentIntensity;\n\t\tdata.object.environmentRotation = this.environmentRotation.toArray();\n\n\t\treturn data;\n\n\t}\n\n}\n\nclass InterleavedBuffer {\n\n\tconstructor( array, stride ) {\n\n\t\tthis.isInterleavedBuffer = true;\n\n\t\tthis.array = array;\n\t\tthis.stride = stride;\n\t\tthis.count = array !== undefined ? array.length / stride : 0;\n\n\t\tthis.usage = StaticDrawUsage;\n\t\tthis._updateRange = { offset: 0, count: - 1 };\n\t\tthis.updateRanges = [];\n\n\t\tthis.version = 0;\n\n\t\tthis.uuid = generateUUID();\n\n\t}\n\n\tonUploadCallback() {}\n\n\tset needsUpdate( value ) {\n\n\t\tif ( value === true ) this.version ++;\n\n\t}\n\n\tget updateRange() {\n\n\t\twarnOnce( 'THREE.InterleavedBuffer: updateRange() is deprecated and will be removed in r169. Use addUpdateRange() instead.' ); // @deprecated, r159\n\t\treturn this._updateRange;\n\n\t}\n\n\tsetUsage( value ) {\n\n\t\tthis.usage = value;\n\n\t\treturn this;\n\n\t}\n\n\taddUpdateRange( start, count ) {\n\n\t\tthis.updateRanges.push( { start, count } );\n\n\t}\n\n\tclearUpdateRanges() {\n\n\t\tthis.updateRanges.length = 0;\n\n\t}\n\n\tcopy( source ) {\n\n\t\tthis.array = new source.array.constructor( source.array );\n\t\tthis.count = source.count;\n\t\tthis.stride = source.stride;\n\t\tthis.usage = source.usage;\n\n\t\treturn this;\n\n\t}\n\n\tcopyAt( index1, attribute, index2 ) {\n\n\t\tindex1 *= this.stride;\n\t\tindex2 *= attribute.stride;\n\n\t\tfor ( let i = 0, l = this.stride; i < l; i ++ ) {\n\n\t\t\tthis.array[ index1 + i ] = attribute.array[ index2 + i ];\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tset( value, offset = 0 ) {\n\n\t\tthis.array.set( value, offset );\n\n\t\treturn this;\n\n\t}\n\n\tclone( data ) {\n\n\t\tif ( data.arrayBuffers === undefined ) {\n\n\t\t\tdata.arrayBuffers = {};\n\n\t\t}\n\n\t\tif ( this.array.buffer._uuid === undefined ) {\n\n\t\t\tthis.array.buffer._uuid = generateUUID();\n\n\t\t}\n\n\t\tif ( data.arrayBuffers[ this.array.buffer._uuid ] === undefined ) {\n\n\t\t\tdata.arrayBuffers[ this.array.buffer._uuid ] = this.array.slice( 0 ).buffer;\n\n\t\t}\n\n\t\tconst array = new this.array.constructor( data.arrayBuffers[ this.array.buffer._uuid ] );\n\n\t\tconst ib = new this.constructor( array, this.stride );\n\t\tib.setUsage( this.usage );\n\n\t\treturn ib;\n\n\t}\n\n\tonUpload( callback ) {\n\n\t\tthis.onUploadCallback = callback;\n\n\t\treturn this;\n\n\t}\n\n\ttoJSON( data ) {\n\n\t\tif ( data.arrayBuffers === undefined ) {\n\n\t\t\tdata.arrayBuffers = {};\n\n\t\t}\n\n\t\t// generate UUID for array buffer if necessary\n\n\t\tif ( this.array.buffer._uuid === undefined ) {\n\n\t\t\tthis.array.buffer._uuid = generateUUID();\n\n\t\t}\n\n\t\tif ( data.arrayBuffers[ this.array.buffer._uuid ] === undefined ) {\n\n\t\t\tdata.arrayBuffers[ this.array.buffer._uuid ] = Array.from( new Uint32Array( this.array.buffer ) );\n\n\t\t}\n\n\t\t//\n\n\t\treturn {\n\t\t\tuuid: this.uuid,\n\t\t\tbuffer: this.array.buffer._uuid,\n\t\t\ttype: this.array.constructor.name,\n\t\t\tstride: this.stride\n\t\t};\n\n\t}\n\n}\n\nconst _vector$6 = /*@__PURE__*/ new Vector3();\n\nclass InterleavedBufferAttribute {\n\n\tconstructor( interleavedBuffer, itemSize, offset, normalized = false ) {\n\n\t\tthis.isInterleavedBufferAttribute = true;\n\n\t\tthis.name = '';\n\n\t\tthis.data = interleavedBuffer;\n\t\tthis.itemSize = itemSize;\n\t\tthis.offset = offset;\n\n\t\tthis.normalized = normalized;\n\n\t}\n\n\tget count() {\n\n\t\treturn this.data.count;\n\n\t}\n\n\tget array() {\n\n\t\treturn this.data.array;\n\n\t}\n\n\tset needsUpdate( value ) {\n\n\t\tthis.data.needsUpdate = value;\n\n\t}\n\n\tapplyMatrix4( m ) {\n\n\t\tfor ( let i = 0, l = this.data.count; i < l; i ++ ) {\n\n\t\t\t_vector$6.fromBufferAttribute( this, i );\n\n\t\t\t_vector$6.applyMatrix4( m );\n\n\t\t\tthis.setXYZ( i, _vector$6.x, _vector$6.y, _vector$6.z );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tapplyNormalMatrix( m ) {\n\n\t\tfor ( let i = 0, l = this.count; i < l; i ++ ) {\n\n\t\t\t_vector$6.fromBufferAttribute( this, i );\n\n\t\t\t_vector$6.applyNormalMatrix( m );\n\n\t\t\tthis.setXYZ( i, _vector$6.x, _vector$6.y, _vector$6.z );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\ttransformDirection( m ) {\n\n\t\tfor ( let i = 0, l = this.count; i < l; i ++ ) {\n\n\t\t\t_vector$6.fromBufferAttribute( this, i );\n\n\t\t\t_vector$6.transformDirection( m );\n\n\t\t\tthis.setXYZ( i, _vector$6.x, _vector$6.y, _vector$6.z );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tgetComponent( index, component ) {\n\n\t\tlet value = this.array[ index * this.data.stride + this.offset + component ];\n\n\t\tif ( this.normalized ) value = denormalize( value, this.array );\n\n\t\treturn value;\n\n\t}\n\n\tsetComponent( index, component, value ) {\n\n\t\tif ( this.normalized ) value = normalize( value, this.array );\n\n\t\tthis.data.array[ index * this.data.stride + this.offset + component ] = value;\n\n\t\treturn this;\n\n\t}\n\n\tsetX( index, x ) {\n\n\t\tif ( this.normalized ) x = normalize( x, this.array );\n\n\t\tthis.data.array[ index * this.data.stride + this.offset ] = x;\n\n\t\treturn this;\n\n\t}\n\n\tsetY( index, y ) {\n\n\t\tif ( this.normalized ) y = normalize( y, this.array );\n\n\t\tthis.data.array[ index * this.data.stride + this.offset + 1 ] = y;\n\n\t\treturn this;\n\n\t}\n\n\tsetZ( index, z ) {\n\n\t\tif ( this.normalized ) z = normalize( z, this.array );\n\n\t\tthis.data.array[ index * this.data.stride + this.offset + 2 ] = z;\n\n\t\treturn this;\n\n\t}\n\n\tsetW( index, w ) {\n\n\t\tif ( this.normalized ) w = normalize( w, this.array );\n\n\t\tthis.data.array[ index * this.data.stride + this.offset + 3 ] = w;\n\n\t\treturn this;\n\n\t}\n\n\tgetX( index ) {\n\n\t\tlet x = this.data.array[ index * this.data.stride + this.offset ];\n\n\t\tif ( this.normalized ) x = denormalize( x, this.array );\n\n\t\treturn x;\n\n\t}\n\n\tgetY( index ) {\n\n\t\tlet y = this.data.array[ index * this.data.stride + this.offset + 1 ];\n\n\t\tif ( this.normalized ) y = denormalize( y, this.array );\n\n\t\treturn y;\n\n\t}\n\n\tgetZ( index ) {\n\n\t\tlet z = this.data.array[ index * this.data.stride + this.offset + 2 ];\n\n\t\tif ( this.normalized ) z = denormalize( z, this.array );\n\n\t\treturn z;\n\n\t}\n\n\tgetW( index ) {\n\n\t\tlet w = this.data.array[ index * this.data.stride + this.offset + 3 ];\n\n\t\tif ( this.normalized ) w = denormalize( w, this.array );\n\n\t\treturn w;\n\n\t}\n\n\tsetXY( index, x, y ) {\n\n\t\tindex = index * this.data.stride + this.offset;\n\n\t\tif ( this.normalized ) {\n\n\t\t\tx = normalize( x, this.array );\n\t\t\ty = normalize( y, this.array );\n\n\t\t}\n\n\t\tthis.data.array[ index + 0 ] = x;\n\t\tthis.data.array[ index + 1 ] = y;\n\n\t\treturn this;\n\n\t}\n\n\tsetXYZ( index, x, y, z ) {\n\n\t\tindex = index * this.data.stride + this.offset;\n\n\t\tif ( this.normalized ) {\n\n\t\t\tx = normalize( x, this.array );\n\t\t\ty = normalize( y, this.array );\n\t\t\tz = normalize( z, this.array );\n\n\t\t}\n\n\t\tthis.data.array[ index + 0 ] = x;\n\t\tthis.data.array[ index + 1 ] = y;\n\t\tthis.data.array[ index + 2 ] = z;\n\n\t\treturn this;\n\n\t}\n\n\tsetXYZW( index, x, y, z, w ) {\n\n\t\tindex = index * this.data.stride + this.offset;\n\n\t\tif ( this.normalized ) {\n\n\t\t\tx = normalize( x, this.array );\n\t\t\ty = normalize( y, this.array );\n\t\t\tz = normalize( z, this.array );\n\t\t\tw = normalize( w, this.array );\n\n\t\t}\n\n\t\tthis.data.array[ index + 0 ] = x;\n\t\tthis.data.array[ index + 1 ] = y;\n\t\tthis.data.array[ index + 2 ] = z;\n\t\tthis.data.array[ index + 3 ] = w;\n\n\t\treturn this;\n\n\t}\n\n\tclone( data ) {\n\n\t\tif ( data === undefined ) {\n\n\t\t\tconsole.log( 'THREE.InterleavedBufferAttribute.clone(): Cloning an interleaved buffer attribute will de-interleave buffer data.' );\n\n\t\t\tconst array = [];\n\n\t\t\tfor ( let i = 0; i < this.count; i ++ ) {\n\n\t\t\t\tconst index = i * this.data.stride + this.offset;\n\n\t\t\t\tfor ( let j = 0; j < this.itemSize; j ++ ) {\n\n\t\t\t\t\tarray.push( this.data.array[ index + j ] );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\treturn new BufferAttribute( new this.array.constructor( array ), this.itemSize, this.normalized );\n\n\t\t} else {\n\n\t\t\tif ( data.interleavedBuffers === undefined ) {\n\n\t\t\t\tdata.interleavedBuffers = {};\n\n\t\t\t}\n\n\t\t\tif ( data.interleavedBuffers[ this.data.uuid ] === undefined ) {\n\n\t\t\t\tdata.interleavedBuffers[ this.data.uuid ] = this.data.clone( data );\n\n\t\t\t}\n\n\t\t\treturn new InterleavedBufferAttribute( data.interleavedBuffers[ this.data.uuid ], this.itemSize, this.offset, this.normalized );\n\n\t\t}\n\n\t}\n\n\ttoJSON( data ) {\n\n\t\tif ( data === undefined ) {\n\n\t\t\tconsole.log( 'THREE.InterleavedBufferAttribute.toJSON(): Serializing an interleaved buffer attribute will de-interleave buffer data.' );\n\n\t\t\tconst array = [];\n\n\t\t\tfor ( let i = 0; i < this.count; i ++ ) {\n\n\t\t\t\tconst index = i * this.data.stride + this.offset;\n\n\t\t\t\tfor ( let j = 0; j < this.itemSize; j ++ ) {\n\n\t\t\t\t\tarray.push( this.data.array[ index + j ] );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// de-interleave data and save it as an ordinary buffer attribute for now\n\n\t\t\treturn {\n\t\t\t\titemSize: this.itemSize,\n\t\t\t\ttype: this.array.constructor.name,\n\t\t\t\tarray: array,\n\t\t\t\tnormalized: this.normalized\n\t\t\t};\n\n\t\t} else {\n\n\t\t\t// save as true interleaved attribute\n\n\t\t\tif ( data.interleavedBuffers === undefined ) {\n\n\t\t\t\tdata.interleavedBuffers = {};\n\n\t\t\t}\n\n\t\t\tif ( data.interleavedBuffers[ this.data.uuid ] === undefined ) {\n\n\t\t\t\tdata.interleavedBuffers[ this.data.uuid ] = this.data.toJSON( data );\n\n\t\t\t}\n\n\t\t\treturn {\n\t\t\t\tisInterleavedBufferAttribute: true,\n\t\t\t\titemSize: this.itemSize,\n\t\t\t\tdata: this.data.uuid,\n\t\t\t\toffset: this.offset,\n\t\t\t\tnormalized: this.normalized\n\t\t\t};\n\n\t\t}\n\n\t}\n\n}\n\nclass SpriteMaterial extends Material {\n\n\tconstructor( parameters ) {\n\n\t\tsuper();\n\n\t\tthis.isSpriteMaterial = true;\n\n\t\tthis.type = 'SpriteMaterial';\n\n\t\tthis.color = new Color( 0xffffff );\n\n\t\tthis.map = null;\n\n\t\tthis.alphaMap = null;\n\n\t\tthis.rotation = 0;\n\n\t\tthis.sizeAttenuation = true;\n\n\t\tthis.transparent = true;\n\n\t\tthis.fog = true;\n\n\t\tthis.setValues( parameters );\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.color.copy( source.color );\n\n\t\tthis.map = source.map;\n\n\t\tthis.alphaMap = source.alphaMap;\n\n\t\tthis.rotation = source.rotation;\n\n\t\tthis.sizeAttenuation = source.sizeAttenuation;\n\n\t\tthis.fog = source.fog;\n\n\t\treturn this;\n\n\t}\n\n}\n\nlet _geometry;\n\nconst _intersectPoint = /*@__PURE__*/ new Vector3();\nconst _worldScale = /*@__PURE__*/ new Vector3();\nconst _mvPosition = /*@__PURE__*/ new Vector3();\n\nconst _alignedPosition = /*@__PURE__*/ new Vector2();\nconst _rotatedPosition = /*@__PURE__*/ new Vector2();\nconst _viewWorldMatrix = /*@__PURE__*/ new Matrix4();\n\nconst _vA = /*@__PURE__*/ new Vector3();\nconst _vB = /*@__PURE__*/ new Vector3();\nconst _vC = /*@__PURE__*/ new Vector3();\n\nconst _uvA = /*@__PURE__*/ new Vector2();\nconst _uvB = /*@__PURE__*/ new Vector2();\nconst _uvC = /*@__PURE__*/ new Vector2();\n\nclass Sprite extends Object3D {\n\n\tconstructor( material = new SpriteMaterial() ) {\n\n\t\tsuper();\n\n\t\tthis.isSprite = true;\n\n\t\tthis.type = 'Sprite';\n\n\t\tif ( _geometry === undefined ) {\n\n\t\t\t_geometry = new BufferGeometry();\n\n\t\t\tconst float32Array = new Float32Array( [\n\t\t\t\t- 0.5, - 0.5, 0, 0, 0,\n\t\t\t\t0.5, - 0.5, 0, 1, 0,\n\t\t\t\t0.5, 0.5, 0, 1, 1,\n\t\t\t\t- 0.5, 0.5, 0, 0, 1\n\t\t\t] );\n\n\t\t\tconst interleavedBuffer = new InterleavedBuffer( float32Array, 5 );\n\n\t\t\t_geometry.setIndex( [ 0, 1, 2,\t0, 2, 3 ] );\n\t\t\t_geometry.setAttribute( 'position', new InterleavedBufferAttribute( interleavedBuffer, 3, 0, false ) );\n\t\t\t_geometry.setAttribute( 'uv', new InterleavedBufferAttribute( interleavedBuffer, 2, 3, false ) );\n\n\t\t}\n\n\t\tthis.geometry = _geometry;\n\t\tthis.material = material;\n\n\t\tthis.center = new Vector2( 0.5, 0.5 );\n\n\t}\n\n\traycast( raycaster, intersects ) {\n\n\t\tif ( raycaster.camera === null ) {\n\n\t\t\tconsole.error( 'THREE.Sprite: \"Raycaster.camera\" needs to be set in order to raycast against sprites.' );\n\n\t\t}\n\n\t\t_worldScale.setFromMatrixScale( this.matrixWorld );\n\n\t\t_viewWorldMatrix.copy( raycaster.camera.matrixWorld );\n\t\tthis.modelViewMatrix.multiplyMatrices( raycaster.camera.matrixWorldInverse, this.matrixWorld );\n\n\t\t_mvPosition.setFromMatrixPosition( this.modelViewMatrix );\n\n\t\tif ( raycaster.camera.isPerspectiveCamera && this.material.sizeAttenuation === false ) {\n\n\t\t\t_worldScale.multiplyScalar( - _mvPosition.z );\n\n\t\t}\n\n\t\tconst rotation = this.material.rotation;\n\t\tlet sin, cos;\n\n\t\tif ( rotation !== 0 ) {\n\n\t\t\tcos = Math.cos( rotation );\n\t\t\tsin = Math.sin( rotation );\n\n\t\t}\n\n\t\tconst center = this.center;\n\n\t\ttransformVertex( _vA.set( - 0.5, - 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );\n\t\ttransformVertex( _vB.set( 0.5, - 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );\n\t\ttransformVertex( _vC.set( 0.5, 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );\n\n\t\t_uvA.set( 0, 0 );\n\t\t_uvB.set( 1, 0 );\n\t\t_uvC.set( 1, 1 );\n\n\t\t// check first triangle\n\t\tlet intersect = raycaster.ray.intersectTriangle( _vA, _vB, _vC, false, _intersectPoint );\n\n\t\tif ( intersect === null ) {\n\n\t\t\t// check second triangle\n\t\t\ttransformVertex( _vB.set( - 0.5, 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );\n\t\t\t_uvB.set( 0, 1 );\n\n\t\t\tintersect = raycaster.ray.intersectTriangle( _vA, _vC, _vB, false, _intersectPoint );\n\t\t\tif ( intersect === null ) {\n\n\t\t\t\treturn;\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst distance = raycaster.ray.origin.distanceTo( _intersectPoint );\n\n\t\tif ( distance < raycaster.near || distance > raycaster.far ) return;\n\n\t\tintersects.push( {\n\n\t\t\tdistance: distance,\n\t\t\tpoint: _intersectPoint.clone(),\n\t\t\tuv: Triangle.getInterpolation( _intersectPoint, _vA, _vB, _vC, _uvA, _uvB, _uvC, new Vector2() ),\n\t\t\tface: null,\n\t\t\tobject: this\n\n\t\t} );\n\n\t}\n\n\tcopy( source, recursive ) {\n\n\t\tsuper.copy( source, recursive );\n\n\t\tif ( source.center !== undefined ) this.center.copy( source.center );\n\n\t\tthis.material = source.material;\n\n\t\treturn this;\n\n\t}\n\n}\n\nfunction transformVertex( vertexPosition, mvPosition, center, scale, sin, cos ) {\n\n\t// compute position in camera space\n\t_alignedPosition.subVectors( vertexPosition, center ).addScalar( 0.5 ).multiply( scale );\n\n\t// to check if rotation is not zero\n\tif ( sin !== undefined ) {\n\n\t\t_rotatedPosition.x = ( cos * _alignedPosition.x ) - ( sin * _alignedPosition.y );\n\t\t_rotatedPosition.y = ( sin * _alignedPosition.x ) + ( cos * _alignedPosition.y );\n\n\t} else {\n\n\t\t_rotatedPosition.copy( _alignedPosition );\n\n\t}\n\n\n\tvertexPosition.copy( mvPosition );\n\tvertexPosition.x += _rotatedPosition.x;\n\tvertexPosition.y += _rotatedPosition.y;\n\n\t// transform to world space\n\tvertexPosition.applyMatrix4( _viewWorldMatrix );\n\n}\n\nconst _v1$2 = /*@__PURE__*/ new Vector3();\nconst _v2$1 = /*@__PURE__*/ new Vector3();\n\nclass LOD extends Object3D {\n\n\tconstructor() {\n\n\t\tsuper();\n\n\t\tthis._currentLevel = 0;\n\n\t\tthis.type = 'LOD';\n\n\t\tObject.defineProperties( this, {\n\t\t\tlevels: {\n\t\t\t\tenumerable: true,\n\t\t\t\tvalue: []\n\t\t\t},\n\t\t\tisLOD: {\n\t\t\t\tvalue: true,\n\t\t\t}\n\t\t} );\n\n\t\tthis.autoUpdate = true;\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source, false );\n\n\t\tconst levels = source.levels;\n\n\t\tfor ( let i = 0, l = levels.length; i < l; i ++ ) {\n\n\t\t\tconst level = levels[ i ];\n\n\t\t\tthis.addLevel( level.object.clone(), level.distance, level.hysteresis );\n\n\t\t}\n\n\t\tthis.autoUpdate = source.autoUpdate;\n\n\t\treturn this;\n\n\t}\n\n\taddLevel( object, distance = 0, hysteresis = 0 ) {\n\n\t\tdistance = Math.abs( distance );\n\n\t\tconst levels = this.levels;\n\n\t\tlet l;\n\n\t\tfor ( l = 0; l < levels.length; l ++ ) {\n\n\t\t\tif ( distance < levels[ l ].distance ) {\n\n\t\t\t\tbreak;\n\n\t\t\t}\n\n\t\t}\n\n\t\tlevels.splice( l, 0, { distance: distance, hysteresis: hysteresis, object: object } );\n\n\t\tthis.add( object );\n\n\t\treturn this;\n\n\t}\n\n\tgetCurrentLevel() {\n\n\t\treturn this._currentLevel;\n\n\t}\n\n\n\n\tgetObjectForDistance( distance ) {\n\n\t\tconst levels = this.levels;\n\n\t\tif ( levels.length > 0 ) {\n\n\t\t\tlet i, l;\n\n\t\t\tfor ( i = 1, l = levels.length; i < l; i ++ ) {\n\n\t\t\t\tlet levelDistance = levels[ i ].distance;\n\n\t\t\t\tif ( levels[ i ].object.visible ) {\n\n\t\t\t\t\tlevelDistance -= levelDistance * levels[ i ].hysteresis;\n\n\t\t\t\t}\n\n\t\t\t\tif ( distance < levelDistance ) {\n\n\t\t\t\t\tbreak;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\treturn levels[ i - 1 ].object;\n\n\t\t}\n\n\t\treturn null;\n\n\t}\n\n\traycast( raycaster, intersects ) {\n\n\t\tconst levels = this.levels;\n\n\t\tif ( levels.length > 0 ) {\n\n\t\t\t_v1$2.setFromMatrixPosition( this.matrixWorld );\n\n\t\t\tconst distance = raycaster.ray.origin.distanceTo( _v1$2 );\n\n\t\t\tthis.getObjectForDistance( distance ).raycast( raycaster, intersects );\n\n\t\t}\n\n\t}\n\n\tupdate( camera ) {\n\n\t\tconst levels = this.levels;\n\n\t\tif ( levels.length > 1 ) {\n\n\t\t\t_v1$2.setFromMatrixPosition( camera.matrixWorld );\n\t\t\t_v2$1.setFromMatrixPosition( this.matrixWorld );\n\n\t\t\tconst distance = _v1$2.distanceTo( _v2$1 ) / camera.zoom;\n\n\t\t\tlevels[ 0 ].object.visible = true;\n\n\t\t\tlet i, l;\n\n\t\t\tfor ( i = 1, l = levels.length; i < l; i ++ ) {\n\n\t\t\t\tlet levelDistance = levels[ i ].distance;\n\n\t\t\t\tif ( levels[ i ].object.visible ) {\n\n\t\t\t\t\tlevelDistance -= levelDistance * levels[ i ].hysteresis;\n\n\t\t\t\t}\n\n\t\t\t\tif ( distance >= levelDistance ) {\n\n\t\t\t\t\tlevels[ i - 1 ].object.visible = false;\n\t\t\t\t\tlevels[ i ].object.visible = true;\n\n\t\t\t\t} else {\n\n\t\t\t\t\tbreak;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tthis._currentLevel = i - 1;\n\n\t\t\tfor ( ; i < l; i ++ ) {\n\n\t\t\t\tlevels[ i ].object.visible = false;\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\ttoJSON( meta ) {\n\n\t\tconst data = super.toJSON( meta );\n\n\t\tif ( this.autoUpdate === false ) data.object.autoUpdate = false;\n\n\t\tdata.object.levels = [];\n\n\t\tconst levels = this.levels;\n\n\t\tfor ( let i = 0, l = levels.length; i < l; i ++ ) {\n\n\t\t\tconst level = levels[ i ];\n\n\t\t\tdata.object.levels.push( {\n\t\t\t\tobject: level.object.uuid,\n\t\t\t\tdistance: level.distance,\n\t\t\t\thysteresis: level.hysteresis\n\t\t\t} );\n\n\t\t}\n\n\t\treturn data;\n\n\t}\n\n}\n\nconst _basePosition = /*@__PURE__*/ new Vector3();\n\nconst _skinIndex = /*@__PURE__*/ new Vector4();\nconst _skinWeight = /*@__PURE__*/ new Vector4();\n\nconst _vector3 = /*@__PURE__*/ new Vector3();\nconst _matrix4 = /*@__PURE__*/ new Matrix4();\nconst _vertex = /*@__PURE__*/ new Vector3();\n\nconst _sphere$4 = /*@__PURE__*/ new Sphere();\nconst _inverseMatrix$2 = /*@__PURE__*/ new Matrix4();\nconst _ray$2 = /*@__PURE__*/ new Ray();\n\nclass SkinnedMesh extends Mesh {\n\n\tconstructor( geometry, material ) {\n\n\t\tsuper( geometry, material );\n\n\t\tthis.isSkinnedMesh = true;\n\n\t\tthis.type = 'SkinnedMesh';\n\n\t\tthis.bindMode = AttachedBindMode;\n\t\tthis.bindMatrix = new Matrix4();\n\t\tthis.bindMatrixInverse = new Matrix4();\n\n\t\tthis.boundingBox = null;\n\t\tthis.boundingSphere = null;\n\n\t}\n\n\tcomputeBoundingBox() {\n\n\t\tconst geometry = this.geometry;\n\n\t\tif ( this.boundingBox === null ) {\n\n\t\t\tthis.boundingBox = new Box3();\n\n\t\t}\n\n\t\tthis.boundingBox.makeEmpty();\n\n\t\tconst positionAttribute = geometry.getAttribute( 'position' );\n\n\t\tfor ( let i = 0; i < positionAttribute.count; i ++ ) {\n\n\t\t\tthis.getVertexPosition( i, _vertex );\n\t\t\tthis.boundingBox.expandByPoint( _vertex );\n\n\t\t}\n\n\t}\n\n\tcomputeBoundingSphere() {\n\n\t\tconst geometry = this.geometry;\n\n\t\tif ( this.boundingSphere === null ) {\n\n\t\t\tthis.boundingSphere = new Sphere();\n\n\t\t}\n\n\t\tthis.boundingSphere.makeEmpty();\n\n\t\tconst positionAttribute = geometry.getAttribute( 'position' );\n\n\t\tfor ( let i = 0; i < positionAttribute.count; i ++ ) {\n\n\t\t\tthis.getVertexPosition( i, _vertex );\n\t\t\tthis.boundingSphere.expandByPoint( _vertex );\n\n\t\t}\n\n\t}\n\n\tcopy( source, recursive ) {\n\n\t\tsuper.copy( source, recursive );\n\n\t\tthis.bindMode = source.bindMode;\n\t\tthis.bindMatrix.copy( source.bindMatrix );\n\t\tthis.bindMatrixInverse.copy( source.bindMatrixInverse );\n\n\t\tthis.skeleton = source.skeleton;\n\n\t\tif ( source.boundingBox !== null ) this.boundingBox = source.boundingBox.clone();\n\t\tif ( source.boundingSphere !== null ) this.boundingSphere = source.boundingSphere.clone();\n\n\t\treturn this;\n\n\t}\n\n\traycast( raycaster, intersects ) {\n\n\t\tconst material = this.material;\n\t\tconst matrixWorld = this.matrixWorld;\n\n\t\tif ( material === undefined ) return;\n\n\t\t// test with bounding sphere in world space\n\n\t\tif ( this.boundingSphere === null ) this.computeBoundingSphere();\n\n\t\t_sphere$4.copy( this.boundingSphere );\n\t\t_sphere$4.applyMatrix4( matrixWorld );\n\n\t\tif ( raycaster.ray.intersectsSphere( _sphere$4 ) === false ) return;\n\n\t\t// convert ray to local space of skinned mesh\n\n\t\t_inverseMatrix$2.copy( matrixWorld ).invert();\n\t\t_ray$2.copy( raycaster.ray ).applyMatrix4( _inverseMatrix$2 );\n\n\t\t// test with bounding box in local space\n\n\t\tif ( this.boundingBox !== null ) {\n\n\t\t\tif ( _ray$2.intersectsBox( this.boundingBox ) === false ) return;\n\n\t\t}\n\n\t\t// test for intersections with geometry\n\n\t\tthis._computeIntersections( raycaster, intersects, _ray$2 );\n\n\t}\n\n\tgetVertexPosition( index, target ) {\n\n\t\tsuper.getVertexPosition( index, target );\n\n\t\tthis.applyBoneTransform( index, target );\n\n\t\treturn target;\n\n\t}\n\n\tbind( skeleton, bindMatrix ) {\n\n\t\tthis.skeleton = skeleton;\n\n\t\tif ( bindMatrix === undefined ) {\n\n\t\t\tthis.updateMatrixWorld( true );\n\n\t\t\tthis.skeleton.calculateInverses();\n\n\t\t\tbindMatrix = this.matrixWorld;\n\n\t\t}\n\n\t\tthis.bindMatrix.copy( bindMatrix );\n\t\tthis.bindMatrixInverse.copy( bindMatrix ).invert();\n\n\t}\n\n\tpose() {\n\n\t\tthis.skeleton.pose();\n\n\t}\n\n\tnormalizeSkinWeights() {\n\n\t\tconst vector = new Vector4();\n\n\t\tconst skinWeight = this.geometry.attributes.skinWeight;\n\n\t\tfor ( let i = 0, l = skinWeight.count; i < l; i ++ ) {\n\n\t\t\tvector.fromBufferAttribute( skinWeight, i );\n\n\t\t\tconst scale = 1.0 / vector.manhattanLength();\n\n\t\t\tif ( scale !== Infinity ) {\n\n\t\t\t\tvector.multiplyScalar( scale );\n\n\t\t\t} else {\n\n\t\t\t\tvector.set( 1, 0, 0, 0 ); // do something reasonable\n\n\t\t\t}\n\n\t\t\tskinWeight.setXYZW( i, vector.x, vector.y, vector.z, vector.w );\n\n\t\t}\n\n\t}\n\n\tupdateMatrixWorld( force ) {\n\n\t\tsuper.updateMatrixWorld( force );\n\n\t\tif ( this.bindMode === AttachedBindMode ) {\n\n\t\t\tthis.bindMatrixInverse.copy( this.matrixWorld ).invert();\n\n\t\t} else if ( this.bindMode === DetachedBindMode ) {\n\n\t\t\tthis.bindMatrixInverse.copy( this.bindMatrix ).invert();\n\n\t\t} else {\n\n\t\t\tconsole.warn( 'THREE.SkinnedMesh: Unrecognized bindMode: ' + this.bindMode );\n\n\t\t}\n\n\t}\n\n\tapplyBoneTransform( index, vector ) {\n\n\t\tconst skeleton = this.skeleton;\n\t\tconst geometry = this.geometry;\n\n\t\t_skinIndex.fromBufferAttribute( geometry.attributes.skinIndex, index );\n\t\t_skinWeight.fromBufferAttribute( geometry.attributes.skinWeight, index );\n\n\t\t_basePosition.copy( vector ).applyMatrix4( this.bindMatrix );\n\n\t\tvector.set( 0, 0, 0 );\n\n\t\tfor ( let i = 0; i < 4; i ++ ) {\n\n\t\t\tconst weight = _skinWeight.getComponent( i );\n\n\t\t\tif ( weight !== 0 ) {\n\n\t\t\t\tconst boneIndex = _skinIndex.getComponent( i );\n\n\t\t\t\t_matrix4.multiplyMatrices( skeleton.bones[ boneIndex ].matrixWorld, skeleton.boneInverses[ boneIndex ] );\n\n\t\t\t\tvector.addScaledVector( _vector3.copy( _basePosition ).applyMatrix4( _matrix4 ), weight );\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn vector.applyMatrix4( this.bindMatrixInverse );\n\n\t}\n\n}\n\nclass Bone extends Object3D {\n\n\tconstructor() {\n\n\t\tsuper();\n\n\t\tthis.isBone = true;\n\n\t\tthis.type = 'Bone';\n\n\t}\n\n}\n\nclass DataTexture extends Texture {\n\n\tconstructor( data = null, width = 1, height = 1, format, type, mapping, wrapS, wrapT, magFilter = NearestFilter, minFilter = NearestFilter, anisotropy, colorSpace ) {\n\n\t\tsuper( null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, colorSpace );\n\n\t\tthis.isDataTexture = true;\n\n\t\tthis.image = { data: data, width: width, height: height };\n\n\t\tthis.generateMipmaps = false;\n\t\tthis.flipY = false;\n\t\tthis.unpackAlignment = 1;\n\n\t}\n\n}\n\nconst _offsetMatrix = /*@__PURE__*/ new Matrix4();\nconst _identityMatrix$1 = /*@__PURE__*/ new Matrix4();\n\nclass Skeleton {\n\n\tconstructor( bones = [], boneInverses = [] ) {\n\n\t\tthis.uuid = generateUUID();\n\n\t\tthis.bones = bones.slice( 0 );\n\t\tthis.boneInverses = boneInverses;\n\t\tthis.boneMatrices = null;\n\n\t\tthis.boneTexture = null;\n\n\t\tthis.init();\n\n\t}\n\n\tinit() {\n\n\t\tconst bones = this.bones;\n\t\tconst boneInverses = this.boneInverses;\n\n\t\tthis.boneMatrices = new Float32Array( bones.length * 16 );\n\n\t\t// calculate inverse bone matrices if necessary\n\n\t\tif ( boneInverses.length === 0 ) {\n\n\t\t\tthis.calculateInverses();\n\n\t\t} else {\n\n\t\t\t// handle special case\n\n\t\t\tif ( bones.length !== boneInverses.length ) {\n\n\t\t\t\tconsole.warn( 'THREE.Skeleton: Number of inverse bone matrices does not match amount of bones.' );\n\n\t\t\t\tthis.boneInverses = [];\n\n\t\t\t\tfor ( let i = 0, il = this.bones.length; i < il; i ++ ) {\n\n\t\t\t\t\tthis.boneInverses.push( new Matrix4() );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\tcalculateInverses() {\n\n\t\tthis.boneInverses.length = 0;\n\n\t\tfor ( let i = 0, il = this.bones.length; i < il; i ++ ) {\n\n\t\t\tconst inverse = new Matrix4();\n\n\t\t\tif ( this.bones[ i ] ) {\n\n\t\t\t\tinverse.copy( this.bones[ i ].matrixWorld ).invert();\n\n\t\t\t}\n\n\t\t\tthis.boneInverses.push( inverse );\n\n\t\t}\n\n\t}\n\n\tpose() {\n\n\t\t// recover the bind-time world matrices\n\n\t\tfor ( let i = 0, il = this.bones.length; i < il; i ++ ) {\n\n\t\t\tconst bone = this.bones[ i ];\n\n\t\t\tif ( bone ) {\n\n\t\t\t\tbone.matrixWorld.copy( this.boneInverses[ i ] ).invert();\n\n\t\t\t}\n\n\t\t}\n\n\t\t// compute the local matrices, positions, rotations and scales\n\n\t\tfor ( let i = 0, il = this.bones.length; i < il; i ++ ) {\n\n\t\t\tconst bone = this.bones[ i ];\n\n\t\t\tif ( bone ) {\n\n\t\t\t\tif ( bone.parent && bone.parent.isBone ) {\n\n\t\t\t\t\tbone.matrix.copy( bone.parent.matrixWorld ).invert();\n\t\t\t\t\tbone.matrix.multiply( bone.matrixWorld );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tbone.matrix.copy( bone.matrixWorld );\n\n\t\t\t\t}\n\n\t\t\t\tbone.matrix.decompose( bone.position, bone.quaternion, bone.scale );\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\tupdate() {\n\n\t\tconst bones = this.bones;\n\t\tconst boneInverses = this.boneInverses;\n\t\tconst boneMatrices = this.boneMatrices;\n\t\tconst boneTexture = this.boneTexture;\n\n\t\t// flatten bone matrices to array\n\n\t\tfor ( let i = 0, il = bones.length; i < il; i ++ ) {\n\n\t\t\t// compute the offset between the current and the original transform\n\n\t\t\tconst matrix = bones[ i ] ? bones[ i ].matrixWorld : _identityMatrix$1;\n\n\t\t\t_offsetMatrix.multiplyMatrices( matrix, boneInverses[ i ] );\n\t\t\t_offsetMatrix.toArray( boneMatrices, i * 16 );\n\n\t\t}\n\n\t\tif ( boneTexture !== null ) {\n\n\t\t\tboneTexture.needsUpdate = true;\n\n\t\t}\n\n\t}\n\n\tclone() {\n\n\t\treturn new Skeleton( this.bones, this.boneInverses );\n\n\t}\n\n\tcomputeBoneTexture() {\n\n\t\t// layout (1 matrix = 4 pixels)\n\t\t// RGBA RGBA RGBA RGBA (=> column1, column2, column3, column4)\n\t\t// with 8x8 pixel texture max 16 bones * 4 pixels = (8 * 8)\n\t\t// 16x16 pixel texture max 64 bones * 4 pixels = (16 * 16)\n\t\t// 32x32 pixel texture max 256 bones * 4 pixels = (32 * 32)\n\t\t// 64x64 pixel texture max 1024 bones * 4 pixels = (64 * 64)\n\n\t\tlet size = Math.sqrt( this.bones.length * 4 ); // 4 pixels needed for 1 matrix\n\t\tsize = Math.ceil( size / 4 ) * 4;\n\t\tsize = Math.max( size, 4 );\n\n\t\tconst boneMatrices = new Float32Array( size * size * 4 ); // 4 floats per RGBA pixel\n\t\tboneMatrices.set( this.boneMatrices ); // copy current values\n\n\t\tconst boneTexture = new DataTexture( boneMatrices, size, size, RGBAFormat, FloatType );\n\t\tboneTexture.needsUpdate = true;\n\n\t\tthis.boneMatrices = boneMatrices;\n\t\tthis.boneTexture = boneTexture;\n\n\t\treturn this;\n\n\t}\n\n\tgetBoneByName( name ) {\n\n\t\tfor ( let i = 0, il = this.bones.length; i < il; i ++ ) {\n\n\t\t\tconst bone = this.bones[ i ];\n\n\t\t\tif ( bone.name === name ) {\n\n\t\t\t\treturn bone;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn undefined;\n\n\t}\n\n\tdispose( ) {\n\n\t\tif ( this.boneTexture !== null ) {\n\n\t\t\tthis.boneTexture.dispose();\n\n\t\t\tthis.boneTexture = null;\n\n\t\t}\n\n\t}\n\n\tfromJSON( json, bones ) {\n\n\t\tthis.uuid = json.uuid;\n\n\t\tfor ( let i = 0, l = json.bones.length; i < l; i ++ ) {\n\n\t\t\tconst uuid = json.bones[ i ];\n\t\t\tlet bone = bones[ uuid ];\n\n\t\t\tif ( bone === undefined ) {\n\n\t\t\t\tconsole.warn( 'THREE.Skeleton: No bone found with UUID:', uuid );\n\t\t\t\tbone = new Bone();\n\n\t\t\t}\n\n\t\t\tthis.bones.push( bone );\n\t\t\tthis.boneInverses.push( new Matrix4().fromArray( json.boneInverses[ i ] ) );\n\n\t\t}\n\n\t\tthis.init();\n\n\t\treturn this;\n\n\t}\n\n\ttoJSON() {\n\n\t\tconst data = {\n\t\t\tmetadata: {\n\t\t\t\tversion: 4.6,\n\t\t\t\ttype: 'Skeleton',\n\t\t\t\tgenerator: 'Skeleton.toJSON'\n\t\t\t},\n\t\t\tbones: [],\n\t\t\tboneInverses: []\n\t\t};\n\n\t\tdata.uuid = this.uuid;\n\n\t\tconst bones = this.bones;\n\t\tconst boneInverses = this.boneInverses;\n\n\t\tfor ( let i = 0, l = bones.length; i < l; i ++ ) {\n\n\t\t\tconst bone = bones[ i ];\n\t\t\tdata.bones.push( bone.uuid );\n\n\t\t\tconst boneInverse = boneInverses[ i ];\n\t\t\tdata.boneInverses.push( boneInverse.toArray() );\n\n\t\t}\n\n\t\treturn data;\n\n\t}\n\n}\n\nclass InstancedBufferAttribute extends BufferAttribute {\n\n\tconstructor( array, itemSize, normalized, meshPerAttribute = 1 ) {\n\n\t\tsuper( array, itemSize, normalized );\n\n\t\tthis.isInstancedBufferAttribute = true;\n\n\t\tthis.meshPerAttribute = meshPerAttribute;\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.meshPerAttribute = source.meshPerAttribute;\n\n\t\treturn this;\n\n\t}\n\n\ttoJSON() {\n\n\t\tconst data = super.toJSON();\n\n\t\tdata.meshPerAttribute = this.meshPerAttribute;\n\n\t\tdata.isInstancedBufferAttribute = true;\n\n\t\treturn data;\n\n\t}\n\n}\n\nconst _instanceLocalMatrix = /*@__PURE__*/ new Matrix4();\nconst _instanceWorldMatrix = /*@__PURE__*/ new Matrix4();\n\nconst _instanceIntersects = [];\n\nconst _box3 = /*@__PURE__*/ new Box3();\nconst _identity = /*@__PURE__*/ new Matrix4();\nconst _mesh$1 = /*@__PURE__*/ new Mesh();\nconst _sphere$3 = /*@__PURE__*/ new Sphere();\n\nclass InstancedMesh extends Mesh {\n\n\tconstructor( geometry, material, count ) {\n\n\t\tsuper( geometry, material );\n\n\t\tthis.isInstancedMesh = true;\n\n\t\tthis.instanceMatrix = new InstancedBufferAttribute( new Float32Array( count * 16 ), 16 );\n\t\tthis.instanceColor = null;\n\t\tthis.morphTexture = null;\n\n\t\tthis.count = count;\n\n\t\tthis.boundingBox = null;\n\t\tthis.boundingSphere = null;\n\n\t\tfor ( let i = 0; i < count; i ++ ) {\n\n\t\t\tthis.setMatrixAt( i, _identity );\n\n\t\t}\n\n\t}\n\n\tcomputeBoundingBox() {\n\n\t\tconst geometry = this.geometry;\n\t\tconst count = this.count;\n\n\t\tif ( this.boundingBox === null ) {\n\n\t\t\tthis.boundingBox = new Box3();\n\n\t\t}\n\n\t\tif ( geometry.boundingBox === null ) {\n\n\t\t\tgeometry.computeBoundingBox();\n\n\t\t}\n\n\t\tthis.boundingBox.makeEmpty();\n\n\t\tfor ( let i = 0; i < count; i ++ ) {\n\n\t\t\tthis.getMatrixAt( i, _instanceLocalMatrix );\n\n\t\t\t_box3.copy( geometry.boundingBox ).applyMatrix4( _instanceLocalMatrix );\n\n\t\t\tthis.boundingBox.union( _box3 );\n\n\t\t}\n\n\t}\n\n\tcomputeBoundingSphere() {\n\n\t\tconst geometry = this.geometry;\n\t\tconst count = this.count;\n\n\t\tif ( this.boundingSphere === null ) {\n\n\t\t\tthis.boundingSphere = new Sphere();\n\n\t\t}\n\n\t\tif ( geometry.boundingSphere === null ) {\n\n\t\t\tgeometry.computeBoundingSphere();\n\n\t\t}\n\n\t\tthis.boundingSphere.makeEmpty();\n\n\t\tfor ( let i = 0; i < count; i ++ ) {\n\n\t\t\tthis.getMatrixAt( i, _instanceLocalMatrix );\n\n\t\t\t_sphere$3.copy( geometry.boundingSphere ).applyMatrix4( _instanceLocalMatrix );\n\n\t\t\tthis.boundingSphere.union( _sphere$3 );\n\n\t\t}\n\n\t}\n\n\tcopy( source, recursive ) {\n\n\t\tsuper.copy( source, recursive );\n\n\t\tthis.instanceMatrix.copy( source.instanceMatrix );\n\n\t\tif ( source.morphTexture !== null ) this.morphTexture = source.morphTexture.clone();\n\t\tif ( source.instanceColor !== null ) this.instanceColor = source.instanceColor.clone();\n\n\t\tthis.count = source.count;\n\n\t\tif ( source.boundingBox !== null ) this.boundingBox = source.boundingBox.clone();\n\t\tif ( source.boundingSphere !== null ) this.boundingSphere = source.boundingSphere.clone();\n\n\t\treturn this;\n\n\t}\n\n\tgetColorAt( index, color ) {\n\n\t\tcolor.fromArray( this.instanceColor.array, index * 3 );\n\n\t}\n\n\tgetMatrixAt( index, matrix ) {\n\n\t\tmatrix.fromArray( this.instanceMatrix.array, index * 16 );\n\n\t}\n\n\tgetMorphAt( index, object ) {\n\n\t\tconst objectInfluences = object.morphTargetInfluences;\n\n\t\tconst array = this.morphTexture.source.data.data;\n\n\t\tconst len = objectInfluences.length + 1; // All influences + the baseInfluenceSum\n\n\t\tconst dataIndex = index * len + 1; // Skip the baseInfluenceSum at the beginning\n\n\t\tfor ( let i = 0; i < objectInfluences.length; i ++ ) {\n\n\t\t\tobjectInfluences[ i ] = array[ dataIndex + i ];\n\n\t\t}\n\n\t}\n\n\traycast( raycaster, intersects ) {\n\n\t\tconst matrixWorld = this.matrixWorld;\n\t\tconst raycastTimes = this.count;\n\n\t\t_mesh$1.geometry = this.geometry;\n\t\t_mesh$1.material = this.material;\n\n\t\tif ( _mesh$1.material === undefined ) return;\n\n\t\t// test with bounding sphere first\n\n\t\tif ( this.boundingSphere === null ) this.computeBoundingSphere();\n\n\t\t_sphere$3.copy( this.boundingSphere );\n\t\t_sphere$3.applyMatrix4( matrixWorld );\n\n\t\tif ( raycaster.ray.intersectsSphere( _sphere$3 ) === false ) return;\n\n\t\t// now test each instance\n\n\t\tfor ( let instanceId = 0; instanceId < raycastTimes; instanceId ++ ) {\n\n\t\t\t// calculate the world matrix for each instance\n\n\t\t\tthis.getMatrixAt( instanceId, _instanceLocalMatrix );\n\n\t\t\t_instanceWorldMatrix.multiplyMatrices( matrixWorld, _instanceLocalMatrix );\n\n\t\t\t// the mesh represents this single instance\n\n\t\t\t_mesh$1.matrixWorld = _instanceWorldMatrix;\n\n\t\t\t_mesh$1.raycast( raycaster, _instanceIntersects );\n\n\t\t\t// process the result of raycast\n\n\t\t\tfor ( let i = 0, l = _instanceIntersects.length; i < l; i ++ ) {\n\n\t\t\t\tconst intersect = _instanceIntersects[ i ];\n\t\t\t\tintersect.instanceId = instanceId;\n\t\t\t\tintersect.object = this;\n\t\t\t\tintersects.push( intersect );\n\n\t\t\t}\n\n\t\t\t_instanceIntersects.length = 0;\n\n\t\t}\n\n\t}\n\n\tsetColorAt( index, color ) {\n\n\t\tif ( this.instanceColor === null ) {\n\n\t\t\tthis.instanceColor = new InstancedBufferAttribute( new Float32Array( this.instanceMatrix.count * 3 ), 3 );\n\n\t\t}\n\n\t\tcolor.toArray( this.instanceColor.array, index * 3 );\n\n\t}\n\n\tsetMatrixAt( index, matrix ) {\n\n\t\tmatrix.toArray( this.instanceMatrix.array, index * 16 );\n\n\t}\n\n\tsetMorphAt( index, object ) {\n\n\t\tconst objectInfluences = object.morphTargetInfluences;\n\n\t\tconst len = objectInfluences.length + 1; // morphBaseInfluence + all influences\n\n\t\tif ( this.morphTexture === null ) {\n\n\t\t\tthis.morphTexture = new DataTexture( new Float32Array( len * this.count ), len, this.count, RedFormat, FloatType );\n\n\t\t}\n\n\t\tconst array = this.morphTexture.source.data.data;\n\n\t\tlet morphInfluencesSum = 0;\n\n\t\tfor ( let i = 0; i < objectInfluences.length; i ++ ) {\n\n\t\t\tmorphInfluencesSum += objectInfluences[ i ];\n\n\t\t}\n\n\t\tconst morphBaseInfluence = this.geometry.morphTargetsRelative ? 1 : 1 - morphInfluencesSum;\n\n\t\tconst dataIndex = len * index;\n\n\t\tarray[ dataIndex ] = morphBaseInfluence;\n\n\t\tarray.set( objectInfluences, dataIndex + 1 );\n\n\t}\n\n\tupdateMorphTargets() {\n\n\t}\n\n\tdispose() {\n\n\t\tthis.dispatchEvent( { type: 'dispose' } );\n\n\t\tif ( this.morphTexture !== null ) {\n\n\t\t\tthis.morphTexture.dispose();\n\t\t\tthis.morphTexture = null;\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n}\n\nfunction sortOpaque( a, b ) {\n\n\treturn a.z - b.z;\n\n}\n\nfunction sortTransparent( a, b ) {\n\n\treturn b.z - a.z;\n\n}\n\nclass MultiDrawRenderList {\n\n\tconstructor() {\n\n\t\tthis.index = 0;\n\t\tthis.pool = [];\n\t\tthis.list = [];\n\n\t}\n\n\tpush( drawRange, z ) {\n\n\t\tconst pool = this.pool;\n\t\tconst list = this.list;\n\t\tif ( this.index >= pool.length ) {\n\n\t\t\tpool.push( {\n\n\t\t\t\tstart: - 1,\n\t\t\t\tcount: - 1,\n\t\t\t\tz: - 1,\n\n\t\t\t} );\n\n\t\t}\n\n\t\tconst item = pool[ this.index ];\n\t\tlist.push( item );\n\t\tthis.index ++;\n\n\t\titem.start = drawRange.start;\n\t\titem.count = drawRange.count;\n\t\titem.z = z;\n\n\t}\n\n\treset() {\n\n\t\tthis.list.length = 0;\n\t\tthis.index = 0;\n\n\t}\n\n}\n\nconst ID_ATTR_NAME = 'batchId';\nconst _matrix$1 = /*@__PURE__*/ new Matrix4();\nconst _invMatrixWorld = /*@__PURE__*/ new Matrix4();\nconst _identityMatrix = /*@__PURE__*/ new Matrix4();\nconst _whiteColor = /*@__PURE__*/ new Color( 1, 1, 1 );\nconst _projScreenMatrix$2 = /*@__PURE__*/ new Matrix4();\nconst _frustum = /*@__PURE__*/ new Frustum();\nconst _box$1 = /*@__PURE__*/ new Box3();\nconst _sphere$2 = /*@__PURE__*/ new Sphere();\nconst _vector$5 = /*@__PURE__*/ new Vector3();\nconst _forward = /*@__PURE__*/ new Vector3();\nconst _temp = /*@__PURE__*/ new Vector3();\nconst _renderList = /*@__PURE__*/ new MultiDrawRenderList();\nconst _mesh = /*@__PURE__*/ new Mesh();\nconst _batchIntersects = [];\n\n// @TODO: SkinnedMesh support?\n// @TODO: geometry.groups support?\n// @TODO: geometry.drawRange support?\n// @TODO: geometry.morphAttributes support?\n// @TODO: Support uniform parameter per geometry\n// @TODO: Add an \"optimize\" function to pack geometry and remove data gaps\n\n// copies data from attribute \"src\" into \"target\" starting at \"targetOffset\"\nfunction copyAttributeData( src, target, targetOffset = 0 ) {\n\n\tconst itemSize = target.itemSize;\n\tif ( src.isInterleavedBufferAttribute || src.array.constructor !== target.array.constructor ) {\n\n\t\t// use the component getters and setters if the array data cannot\n\t\t// be copied directly\n\t\tconst vertexCount = src.count;\n\t\tfor ( let i = 0; i < vertexCount; i ++ ) {\n\n\t\t\tfor ( let c = 0; c < itemSize; c ++ ) {\n\n\t\t\t\ttarget.setComponent( i + targetOffset, c, src.getComponent( i, c ) );\n\n\t\t\t}\n\n\t\t}\n\n\t} else {\n\n\t\t// faster copy approach using typed array set function\n\t\ttarget.array.set( src.array, targetOffset * itemSize );\n\n\t}\n\n\ttarget.needsUpdate = true;\n\n}\n\nclass BatchedMesh extends Mesh {\n\n\tget maxGeometryCount() {\n\n\t\treturn this._maxGeometryCount;\n\n\t}\n\n\tconstructor( maxGeometryCount, maxVertexCount, maxIndexCount = maxVertexCount * 2, material ) {\n\n\t\tsuper( new BufferGeometry(), material );\n\n\t\tthis.isBatchedMesh = true;\n\t\tthis.perObjectFrustumCulled = true;\n\t\tthis.sortObjects = true;\n\t\tthis.boundingBox = null;\n\t\tthis.boundingSphere = null;\n\t\tthis.customSort = null;\n\n\t\tthis._drawRanges = [];\n\t\tthis._reservedRanges = [];\n\n\t\tthis._visibility = [];\n\t\tthis._active = [];\n\t\tthis._bounds = [];\n\n\t\tthis._maxGeometryCount = maxGeometryCount;\n\t\tthis._maxVertexCount = maxVertexCount;\n\t\tthis._maxIndexCount = maxIndexCount;\n\n\t\tthis._geometryInitialized = false;\n\t\tthis._geometryCount = 0;\n\t\tthis._multiDrawCounts = new Int32Array( maxGeometryCount );\n\t\tthis._multiDrawStarts = new Int32Array( maxGeometryCount );\n\t\tthis._multiDrawCount = 0;\n\t\tthis._multiDrawInstances = null;\n\t\tthis._visibilityChanged = true;\n\n\t\t// Local matrix per geometry by using data texture\n\t\tthis._matricesTexture = null;\n\n\t\tthis._initMatricesTexture();\n\n\t\t// Local color per geometry by using data texture\n\t\tthis._colorsTexture = null;\n\n\t}\n\n\t_initMatricesTexture() {\n\n\t\t// layout (1 matrix = 4 pixels)\n\t\t// RGBA RGBA RGBA RGBA (=> column1, column2, column3, column4)\n\t\t// with 8x8 pixel texture max 16 matrices * 4 pixels = (8 * 8)\n\t\t// 16x16 pixel texture max 64 matrices * 4 pixels = (16 * 16)\n\t\t// 32x32 pixel texture max 256 matrices * 4 pixels = (32 * 32)\n\t\t// 64x64 pixel texture max 1024 matrices * 4 pixels = (64 * 64)\n\n\t\tlet size = Math.sqrt( this._maxGeometryCount * 4 ); // 4 pixels needed for 1 matrix\n\t\tsize = Math.ceil( size / 4 ) * 4;\n\t\tsize = Math.max( size, 4 );\n\n\t\tconst matricesArray = new Float32Array( size * size * 4 ); // 4 floats per RGBA pixel\n\t\tconst matricesTexture = new DataTexture( matricesArray, size, size, RGBAFormat, FloatType );\n\n\t\tthis._matricesTexture = matricesTexture;\n\n\t}\n\n\t_initColorsTexture() {\n\n\t\tlet size = Math.sqrt( this._maxGeometryCount );\n\t\tsize = Math.ceil( size );\n\n\t\t// 4 floats per RGBA pixel initialized to white\n\t\tconst colorsArray = new Float32Array( size * size * 4 ).fill( 1 );\n\t\tconst colorsTexture = new DataTexture( colorsArray, size, size, RGBAFormat, FloatType );\n\t\tcolorsTexture.colorSpace = ColorManagement.workingColorSpace;\n\n\t\tthis._colorsTexture = colorsTexture;\n\n\t}\n\n\t_initializeGeometry( reference ) {\n\n\t\tconst geometry = this.geometry;\n\t\tconst maxVertexCount = this._maxVertexCount;\n\t\tconst maxGeometryCount = this._maxGeometryCount;\n\t\tconst maxIndexCount = this._maxIndexCount;\n\t\tif ( this._geometryInitialized === false ) {\n\n\t\t\tfor ( const attributeName in reference.attributes ) {\n\n\t\t\t\tconst srcAttribute = reference.getAttribute( attributeName );\n\t\t\t\tconst { array, itemSize, normalized } = srcAttribute;\n\n\t\t\t\tconst dstArray = new array.constructor( maxVertexCount * itemSize );\n\t\t\t\tconst dstAttribute = new BufferAttribute( dstArray, itemSize, normalized );\n\n\t\t\t\tgeometry.setAttribute( attributeName, dstAttribute );\n\n\t\t\t}\n\n\t\t\tif ( reference.getIndex() !== null ) {\n\n\t\t\t\tconst indexArray = maxVertexCount > 65536\n\t\t\t\t\t? new Uint32Array( maxIndexCount )\n\t\t\t\t\t: new Uint16Array( maxIndexCount );\n\n\t\t\t\tgeometry.setIndex( new BufferAttribute( indexArray, 1 ) );\n\n\t\t\t}\n\n\t\t\tconst idArray = maxGeometryCount > 65536\n\t\t\t\t? new Uint32Array( maxVertexCount )\n\t\t\t\t: new Uint16Array( maxVertexCount );\n\t\t\tgeometry.setAttribute( ID_ATTR_NAME, new BufferAttribute( idArray, 1 ) );\n\n\t\t\tthis._geometryInitialized = true;\n\n\t\t}\n\n\t}\n\n\t// Make sure the geometry is compatible with the existing combined geometry attributes\n\t_validateGeometry( geometry ) {\n\n\t\t// check that the geometry doesn't have a version of our reserved id attribute\n\t\tif ( geometry.getAttribute( ID_ATTR_NAME ) ) {\n\n\t\t\tthrow new Error( `BatchedMesh: Geometry cannot use attribute \"${ ID_ATTR_NAME }\"` );\n\n\t\t}\n\n\t\t// check to ensure the geometries are using consistent attributes and indices\n\t\tconst batchGeometry = this.geometry;\n\t\tif ( Boolean( geometry.getIndex() ) !== Boolean( batchGeometry.getIndex() ) ) {\n\n\t\t\tthrow new Error( 'BatchedMesh: All geometries must consistently have \"index\".' );\n\n\t\t}\n\n\t\tfor ( const attributeName in batchGeometry.attributes ) {\n\n\t\t\tif ( attributeName === ID_ATTR_NAME ) {\n\n\t\t\t\tcontinue;\n\n\t\t\t}\n\n\t\t\tif ( ! geometry.hasAttribute( attributeName ) ) {\n\n\t\t\t\tthrow new Error( `BatchedMesh: Added geometry missing \"${ attributeName }\". All geometries must have consistent attributes.` );\n\n\t\t\t}\n\n\t\t\tconst srcAttribute = geometry.getAttribute( attributeName );\n\t\t\tconst dstAttribute = batchGeometry.getAttribute( attributeName );\n\t\t\tif ( srcAttribute.itemSize !== dstAttribute.itemSize || srcAttribute.normalized !== dstAttribute.normalized ) {\n\n\t\t\t\tthrow new Error( 'BatchedMesh: All attributes must have a consistent itemSize and normalized value.' );\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\tsetCustomSort( func ) {\n\n\t\tthis.customSort = func;\n\t\treturn this;\n\n\t}\n\n\tcomputeBoundingBox() {\n\n\t\tif ( this.boundingBox === null ) {\n\n\t\t\tthis.boundingBox = new Box3();\n\n\t\t}\n\n\t\tconst geometryCount = this._geometryCount;\n\t\tconst boundingBox = this.boundingBox;\n\t\tconst active = this._active;\n\n\t\tboundingBox.makeEmpty();\n\t\tfor ( let i = 0; i < geometryCount; i ++ ) {\n\n\t\t\tif ( active[ i ] === false ) continue;\n\n\t\t\tthis.getMatrixAt( i, _matrix$1 );\n\t\t\tthis.getBoundingBoxAt( i, _box$1 ).applyMatrix4( _matrix$1 );\n\t\t\tboundingBox.union( _box$1 );\n\n\t\t}\n\n\t}\n\n\tcomputeBoundingSphere() {\n\n\t\tif ( this.boundingSphere === null ) {\n\n\t\t\tthis.boundingSphere = new Sphere();\n\n\t\t}\n\n\t\tconst geometryCount = this._geometryCount;\n\t\tconst boundingSphere = this.boundingSphere;\n\t\tconst active = this._active;\n\n\t\tboundingSphere.makeEmpty();\n\t\tfor ( let i = 0; i < geometryCount; i ++ ) {\n\n\t\t\tif ( active[ i ] === false ) continue;\n\n\t\t\tthis.getMatrixAt( i, _matrix$1 );\n\t\t\tthis.getBoundingSphereAt( i, _sphere$2 ).applyMatrix4( _matrix$1 );\n\t\t\tboundingSphere.union( _sphere$2 );\n\n\t\t}\n\n\t}\n\n\taddGeometry( geometry, vertexCount = - 1, indexCount = - 1 ) {\n\n\t\tthis._initializeGeometry( geometry );\n\n\t\tthis._validateGeometry( geometry );\n\n\t\t// ensure we're not over geometry\n\t\tif ( this._geometryCount >= this._maxGeometryCount ) {\n\n\t\t\tthrow new Error( 'BatchedMesh: Maximum geometry count reached.' );\n\n\t\t}\n\n\t\t// get the necessary range fo the geometry\n\t\tconst reservedRange = {\n\t\t\tvertexStart: - 1,\n\t\t\tvertexCount: - 1,\n\t\t\tindexStart: - 1,\n\t\t\tindexCount: - 1,\n\t\t};\n\n\t\tlet lastRange = null;\n\t\tconst reservedRanges = this._reservedRanges;\n\t\tconst drawRanges = this._drawRanges;\n\t\tconst bounds = this._bounds;\n\t\tif ( this._geometryCount !== 0 ) {\n\n\t\t\tlastRange = reservedRanges[ reservedRanges.length - 1 ];\n\n\t\t}\n\n\t\tif ( vertexCount === - 1 ) {\n\n\t\t\treservedRange.vertexCount = geometry.getAttribute( 'position' ).count;\n\n\t\t} else {\n\n\t\t\treservedRange.vertexCount = vertexCount;\n\n\t\t}\n\n\t\tif ( lastRange === null ) {\n\n\t\t\treservedRange.vertexStart = 0;\n\n\t\t} else {\n\n\t\t\treservedRange.vertexStart = lastRange.vertexStart + lastRange.vertexCount;\n\n\t\t}\n\n\t\tconst index = geometry.getIndex();\n\t\tconst hasIndex = index !== null;\n\t\tif ( hasIndex ) {\n\n\t\t\tif ( indexCount\t=== - 1 ) {\n\n\t\t\t\treservedRange.indexCount = index.count;\n\n\t\t\t} else {\n\n\t\t\t\treservedRange.indexCount = indexCount;\n\n\t\t\t}\n\n\t\t\tif ( lastRange === null ) {\n\n\t\t\t\treservedRange.indexStart = 0;\n\n\t\t\t} else {\n\n\t\t\t\treservedRange.indexStart = lastRange.indexStart + lastRange.indexCount;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif (\n\t\t\treservedRange.indexStart !== - 1 &&\n\t\t\treservedRange.indexStart + reservedRange.indexCount > this._maxIndexCount ||\n\t\t\treservedRange.vertexStart + reservedRange.vertexCount > this._maxVertexCount\n\t\t) {\n\n\t\t\tthrow new Error( 'BatchedMesh: Reserved space request exceeds the maximum buffer size.' );\n\n\t\t}\n\n\t\tconst visibility = this._visibility;\n\t\tconst active = this._active;\n\t\tconst matricesTexture = this._matricesTexture;\n\t\tconst matricesArray = this._matricesTexture.image.data;\n\t\tconst colorsTexture = this._colorsTexture;\n\n\t\t// push new visibility states\n\t\tvisibility.push( true );\n\t\tactive.push( true );\n\n\t\t// update id\n\t\tconst geometryId = this._geometryCount;\n\t\tthis._geometryCount ++;\n\n\t\t// initialize matrix information\n\t\t_identityMatrix.toArray( matricesArray, geometryId * 16 );\n\t\tmatricesTexture.needsUpdate = true;\n\n\t\t// initialize the color to white\n\t\tif ( colorsTexture !== null ) {\n\n\t\t\t_whiteColor.toArray( colorsTexture.image.data, geometryId * 4 );\n\t\t\tcolorsTexture.needsUpdate = true;\n\n\t\t}\n\n\t\t// add the reserved range and draw range objects\n\t\treservedRanges.push( reservedRange );\n\t\tdrawRanges.push( {\n\t\t\tstart: hasIndex ? reservedRange.indexStart : reservedRange.vertexStart,\n\t\t\tcount: - 1\n\t\t} );\n\t\tbounds.push( {\n\t\t\tboxInitialized: false,\n\t\t\tbox: new Box3(),\n\n\t\t\tsphereInitialized: false,\n\t\t\tsphere: new Sphere()\n\t\t} );\n\n\t\t// set the id for the geometry\n\t\tconst idAttribute = this.geometry.getAttribute( ID_ATTR_NAME );\n\t\tfor ( let i = 0; i < reservedRange.vertexCount; i ++ ) {\n\n\t\t\tidAttribute.setX( reservedRange.vertexStart + i, geometryId );\n\n\t\t}\n\n\t\tidAttribute.needsUpdate = true;\n\n\t\t// update the geometry\n\t\tthis.setGeometryAt( geometryId, geometry );\n\n\t\treturn geometryId;\n\n\t}\n\n\tsetGeometryAt( id, geometry ) {\n\n\t\tif ( id >= this._geometryCount ) {\n\n\t\t\tthrow new Error( 'BatchedMesh: Maximum geometry count reached.' );\n\n\t\t}\n\n\t\tthis._validateGeometry( geometry );\n\n\t\tconst batchGeometry = this.geometry;\n\t\tconst hasIndex = batchGeometry.getIndex() !== null;\n\t\tconst dstIndex = batchGeometry.getIndex();\n\t\tconst srcIndex = geometry.getIndex();\n\t\tconst reservedRange = this._reservedRanges[ id ];\n\t\tif (\n\t\t\thasIndex &&\n\t\t\tsrcIndex.count > reservedRange.indexCount ||\n\t\t\tgeometry.attributes.position.count > reservedRange.vertexCount\n\t\t) {\n\n\t\t\tthrow new Error( 'BatchedMesh: Reserved space not large enough for provided geometry.' );\n\n\t\t}\n\n\t\t// copy geometry over\n\t\tconst vertexStart = reservedRange.vertexStart;\n\t\tconst vertexCount = reservedRange.vertexCount;\n\t\tfor ( const attributeName in batchGeometry.attributes ) {\n\n\t\t\tif ( attributeName === ID_ATTR_NAME ) {\n\n\t\t\t\tcontinue;\n\n\t\t\t}\n\n\t\t\t// copy attribute data\n\t\t\tconst srcAttribute = geometry.getAttribute( attributeName );\n\t\t\tconst dstAttribute = batchGeometry.getAttribute( attributeName );\n\t\t\tcopyAttributeData( srcAttribute, dstAttribute, vertexStart );\n\n\t\t\t// fill the rest in with zeroes\n\t\t\tconst itemSize = srcAttribute.itemSize;\n\t\t\tfor ( let i = srcAttribute.count, l = vertexCount; i < l; i ++ ) {\n\n\t\t\t\tconst index = vertexStart + i;\n\t\t\t\tfor ( let c = 0; c < itemSize; c ++ ) {\n\n\t\t\t\t\tdstAttribute.setComponent( index, c, 0 );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tdstAttribute.needsUpdate = true;\n\t\t\tdstAttribute.addUpdateRange( vertexStart * itemSize, vertexCount * itemSize );\n\n\t\t}\n\n\t\t// copy index\n\t\tif ( hasIndex ) {\n\n\t\t\tconst indexStart = reservedRange.indexStart;\n\n\t\t\t// copy index data over\n\t\t\tfor ( let i = 0; i < srcIndex.count; i ++ ) {\n\n\t\t\t\tdstIndex.setX( indexStart + i, vertexStart + srcIndex.getX( i ) );\n\n\t\t\t}\n\n\t\t\t// fill the rest in with zeroes\n\t\t\tfor ( let i = srcIndex.count, l = reservedRange.indexCount; i < l; i ++ ) {\n\n\t\t\t\tdstIndex.setX( indexStart + i, vertexStart );\n\n\t\t\t}\n\n\t\t\tdstIndex.needsUpdate = true;\n\t\t\tdstIndex.addUpdateRange( indexStart, reservedRange.indexCount );\n\n\t\t}\n\n\t\t// store the bounding boxes\n\t\tconst bound = this._bounds[ id ];\n\t\tif ( geometry.boundingBox !== null ) {\n\n\t\t\tbound.box.copy( geometry.boundingBox );\n\t\t\tbound.boxInitialized = true;\n\n\t\t} else {\n\n\t\t\tbound.boxInitialized = false;\n\n\t\t}\n\n\t\tif ( geometry.boundingSphere !== null ) {\n\n\t\t\tbound.sphere.copy( geometry.boundingSphere );\n\t\t\tbound.sphereInitialized = true;\n\n\t\t} else {\n\n\t\t\tbound.sphereInitialized = false;\n\n\t\t}\n\n\t\t// set drawRange count\n\t\tconst drawRange = this._drawRanges[ id ];\n\t\tconst posAttr = geometry.getAttribute( 'position' );\n\t\tdrawRange.count = hasIndex ? srcIndex.count : posAttr.count;\n\t\tthis._visibilityChanged = true;\n\n\t\treturn id;\n\n\t}\n\n\tdeleteGeometry( geometryId ) {\n\n\t\t// Note: User needs to call optimize() afterward to pack the data.\n\n\t\tconst active = this._active;\n\t\tif ( geometryId >= active.length || active[ geometryId ] === false ) {\n\n\t\t\treturn this;\n\n\t\t}\n\n\t\tactive[ geometryId ] = false;\n\t\tthis._visibilityChanged = true;\n\n\t\treturn this;\n\n\t}\n\n\tgetInstanceCountAt( id ) {\n\n\t\tif ( this._multiDrawInstances === null ) return null;\n\n\t\treturn this._multiDrawInstances[ id ];\n\n\t}\n\n\tsetInstanceCountAt( id, instanceCount ) {\n\n\t\tif ( this._multiDrawInstances === null ) {\n\n\t\t\tthis._multiDrawInstances = new Int32Array( this._maxGeometryCount ).fill( 1 );\n\n\t\t}\n\n\t\tthis._multiDrawInstances[ id ] = instanceCount;\n\n\t\treturn id;\n\n\t}\n\n\t// get bounding box and compute it if it doesn't exist\n\tgetBoundingBoxAt( id, target ) {\n\n\t\tconst active = this._active;\n\t\tif ( active[ id ] === false ) {\n\n\t\t\treturn null;\n\n\t\t}\n\n\t\t// compute bounding box\n\t\tconst bound = this._bounds[ id ];\n\t\tconst box = bound.box;\n\t\tconst geometry = this.geometry;\n\t\tif ( bound.boxInitialized === false ) {\n\n\t\t\tbox.makeEmpty();\n\n\t\t\tconst index = geometry.index;\n\t\t\tconst position = geometry.attributes.position;\n\t\t\tconst drawRange = this._drawRanges[ id ];\n\t\t\tfor ( let i = drawRange.start, l = drawRange.start + drawRange.count; i < l; i ++ ) {\n\n\t\t\t\tlet iv = i;\n\t\t\t\tif ( index ) {\n\n\t\t\t\t\tiv = index.getX( iv );\n\n\t\t\t\t}\n\n\t\t\t\tbox.expandByPoint( _vector$5.fromBufferAttribute( position, iv ) );\n\n\t\t\t}\n\n\t\t\tbound.boxInitialized = true;\n\n\t\t}\n\n\t\ttarget.copy( box );\n\t\treturn target;\n\n\t}\n\n\t// get bounding sphere and compute it if it doesn't exist\n\tgetBoundingSphereAt( id, target ) {\n\n\t\tconst active = this._active;\n\t\tif ( active[ id ] === false ) {\n\n\t\t\treturn null;\n\n\t\t}\n\n\t\t// compute bounding sphere\n\t\tconst bound = this._bounds[ id ];\n\t\tconst sphere = bound.sphere;\n\t\tconst geometry = this.geometry;\n\t\tif ( bound.sphereInitialized === false ) {\n\n\t\t\tsphere.makeEmpty();\n\n\t\t\tthis.getBoundingBoxAt( id, _box$1 );\n\t\t\t_box$1.getCenter( sphere.center );\n\n\t\t\tconst index = geometry.index;\n\t\t\tconst position = geometry.attributes.position;\n\t\t\tconst drawRange = this._drawRanges[ id ];\n\n\t\t\tlet maxRadiusSq = 0;\n\t\t\tfor ( let i = drawRange.start, l = drawRange.start + drawRange.count; i < l; i ++ ) {\n\n\t\t\t\tlet iv = i;\n\t\t\t\tif ( index ) {\n\n\t\t\t\t\tiv = index.getX( iv );\n\n\t\t\t\t}\n\n\t\t\t\t_vector$5.fromBufferAttribute( position, iv );\n\t\t\t\tmaxRadiusSq = Math.max( maxRadiusSq, sphere.center.distanceToSquared( _vector$5 ) );\n\n\t\t\t}\n\n\t\t\tsphere.radius = Math.sqrt( maxRadiusSq );\n\t\t\tbound.sphereInitialized = true;\n\n\t\t}\n\n\t\ttarget.copy( sphere );\n\t\treturn target;\n\n\t}\n\n\tsetMatrixAt( geometryId, matrix ) {\n\n\t\t// @TODO: Map geometryId to index of the arrays because\n\t\t// optimize() can make geometryId mismatch the index\n\n\t\tconst active = this._active;\n\t\tconst matricesTexture = this._matricesTexture;\n\t\tconst matricesArray = this._matricesTexture.image.data;\n\t\tconst geometryCount = this._geometryCount;\n\t\tif ( geometryId >= geometryCount || active[ geometryId ] === false ) {\n\n\t\t\treturn this;\n\n\t\t}\n\n\t\tmatrix.toArray( matricesArray, geometryId * 16 );\n\t\tmatricesTexture.needsUpdate = true;\n\n\t\treturn this;\n\n\t}\n\n\tgetMatrixAt( geometryId, matrix ) {\n\n\t\tconst active = this._active;\n\t\tconst matricesArray = this._matricesTexture.image.data;\n\t\tconst geometryCount = this._geometryCount;\n\t\tif ( geometryId >= geometryCount || active[ geometryId ] === false ) {\n\n\t\t\treturn null;\n\n\t\t}\n\n\t\treturn matrix.fromArray( matricesArray, geometryId * 16 );\n\n\t}\n\n\tsetColorAt( geometryId, color ) {\n\n\t\tif ( this._colorsTexture === null ) {\n\n\t\t\tthis._initColorsTexture();\n\n\t\t}\n\n\t\t// @TODO: Map geometryId to index of the arrays because\n\t\t// optimize() can make geometryId mismatch the index\n\n\t\tconst active = this._active;\n\t\tconst colorsTexture = this._colorsTexture;\n\t\tconst colorsArray = this._colorsTexture.image.data;\n\t\tconst geometryCount = this._geometryCount;\n\t\tif ( geometryId >= geometryCount || active[ geometryId ] === false ) {\n\n\t\t\treturn this;\n\n\t\t}\n\n\t\tcolor.toArray( colorsArray, geometryId * 4 );\n\t\tcolorsTexture.needsUpdate = true;\n\n\t\treturn this;\n\n\t}\n\n\tgetColorAt( geometryId, color ) {\n\n\t\tconst active = this._active;\n\t\tconst colorsArray = this._colorsTexture.image.data;\n\t\tconst geometryCount = this._geometryCount;\n\t\tif ( geometryId >= geometryCount || active[ geometryId ] === false ) {\n\n\t\t\treturn null;\n\n\t\t}\n\n\t\treturn color.fromArray( colorsArray, geometryId * 4 );\n\n\t}\n\n\tsetVisibleAt( geometryId, value ) {\n\n\t\tconst visibility = this._visibility;\n\t\tconst active = this._active;\n\t\tconst geometryCount = this._geometryCount;\n\n\t\t// if the geometry is out of range, not active, or visibility state\n\t\t// does not change then return early\n\t\tif (\n\t\t\tgeometryId >= geometryCount ||\n\t\t\tactive[ geometryId ] === false ||\n\t\t\tvisibility[ geometryId ] === value\n\t\t) {\n\n\t\t\treturn this;\n\n\t\t}\n\n\t\tvisibility[ geometryId ] = value;\n\t\tthis._visibilityChanged = true;\n\n\t\treturn this;\n\n\t}\n\n\tgetVisibleAt( geometryId ) {\n\n\t\tconst visibility = this._visibility;\n\t\tconst active = this._active;\n\t\tconst geometryCount = this._geometryCount;\n\n\t\t// return early if the geometry is out of range or not active\n\t\tif ( geometryId >= geometryCount || active[ geometryId ] === false ) {\n\n\t\t\treturn false;\n\n\t\t}\n\n\t\treturn visibility[ geometryId ];\n\n\t}\n\n\traycast( raycaster, intersects ) {\n\n\t\tconst visibility = this._visibility;\n\t\tconst active = this._active;\n\t\tconst drawRanges = this._drawRanges;\n\t\tconst geometryCount = this._geometryCount;\n\t\tconst matrixWorld = this.matrixWorld;\n\t\tconst batchGeometry = this.geometry;\n\n\t\t// iterate over each geometry\n\t\t_mesh.material = this.material;\n\t\t_mesh.geometry.index = batchGeometry.index;\n\t\t_mesh.geometry.attributes = batchGeometry.attributes;\n\t\tif ( _mesh.geometry.boundingBox === null ) {\n\n\t\t\t_mesh.geometry.boundingBox = new Box3();\n\n\t\t}\n\n\t\tif ( _mesh.geometry.boundingSphere === null ) {\n\n\t\t\t_mesh.geometry.boundingSphere = new Sphere();\n\n\t\t}\n\n\t\tfor ( let i = 0; i < geometryCount; i ++ ) {\n\n\t\t\tif ( ! visibility[ i ] || ! active[ i ] ) {\n\n\t\t\t\tcontinue;\n\n\t\t\t}\n\n\t\t\tconst drawRange = drawRanges[ i ];\n\t\t\t_mesh.geometry.setDrawRange( drawRange.start, drawRange.count );\n\n\t\t\t// ge the intersects\n\t\t\tthis.getMatrixAt( i, _mesh.matrixWorld ).premultiply( matrixWorld );\n\t\t\tthis.getBoundingBoxAt( i, _mesh.geometry.boundingBox );\n\t\t\tthis.getBoundingSphereAt( i, _mesh.geometry.boundingSphere );\n\t\t\t_mesh.raycast( raycaster, _batchIntersects );\n\n\t\t\t// add batch id to the intersects\n\t\t\tfor ( let j = 0, l = _batchIntersects.length; j < l; j ++ ) {\n\n\t\t\t\tconst intersect = _batchIntersects[ j ];\n\t\t\t\tintersect.object = this;\n\t\t\t\tintersect.batchId = i;\n\t\t\t\tintersects.push( intersect );\n\n\t\t\t}\n\n\t\t\t_batchIntersects.length = 0;\n\n\t\t}\n\n\t\t_mesh.material = null;\n\t\t_mesh.geometry.index = null;\n\t\t_mesh.geometry.attributes = {};\n\t\t_mesh.geometry.setDrawRange( 0, Infinity );\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.geometry = source.geometry.clone();\n\t\tthis.perObjectFrustumCulled = source.perObjectFrustumCulled;\n\t\tthis.sortObjects = source.sortObjects;\n\t\tthis.boundingBox = source.boundingBox !== null ? source.boundingBox.clone() : null;\n\t\tthis.boundingSphere = source.boundingSphere !== null ? source.boundingSphere.clone() : null;\n\n\t\tthis._drawRanges = source._drawRanges.map( range => ( { ...range } ) );\n\t\tthis._reservedRanges = source._reservedRanges.map( range => ( { ...range } ) );\n\n\t\tthis._visibility = source._visibility.slice();\n\t\tthis._active = source._active.slice();\n\t\tthis._bounds = source._bounds.map( bound => ( {\n\t\t\tboxInitialized: bound.boxInitialized,\n\t\t\tbox: bound.box.clone(),\n\n\t\t\tsphereInitialized: bound.sphereInitialized,\n\t\t\tsphere: bound.sphere.clone()\n\t\t} ) );\n\n\t\tthis._maxGeometryCount = source._maxGeometryCount;\n\t\tthis._maxVertexCount = source._maxVertexCount;\n\t\tthis._maxIndexCount = source._maxIndexCount;\n\n\t\tthis._geometryInitialized = source._geometryInitialized;\n\t\tthis._geometryCount = source._geometryCount;\n\t\tthis._multiDrawCounts = source._multiDrawCounts.slice();\n\t\tthis._multiDrawStarts = source._multiDrawStarts.slice();\n\n\t\tthis._matricesTexture = source._matricesTexture.clone();\n\t\tthis._matricesTexture.image.data = this._matricesTexture.image.slice();\n\n\t\tif ( this._colorsTexture !== null ) {\n\n\t\t\tthis._colorsTexture = source._colorsTexture.clone();\n\t\t\tthis._colorsTexture.image.data = this._colorsTexture.image.slice();\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tdispose() {\n\n\t\t// Assuming the geometry is not shared with other meshes\n\t\tthis.geometry.dispose();\n\n\t\tthis._matricesTexture.dispose();\n\t\tthis._matricesTexture = null;\n\n\t\tif ( this._colorsTexture !== null ) {\n\n\t\t\tthis._colorsTexture.dispose();\n\t\t\tthis._colorsTexture = null;\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tonBeforeRender( renderer, scene, camera, geometry, material/*, _group*/ ) {\n\n\t\t// if visibility has not changed and frustum culling and object sorting is not required\n\t\t// then skip iterating over all items\n\t\tif ( ! this._visibilityChanged && ! this.perObjectFrustumCulled && ! this.sortObjects ) {\n\n\t\t\treturn;\n\n\t\t}\n\n\t\t// the indexed version of the multi draw function requires specifying the start\n\t\t// offset in bytes.\n\t\tconst index = geometry.getIndex();\n\t\tconst bytesPerElement = index === null ? 1 : index.array.BYTES_PER_ELEMENT;\n\n\t\tconst active = this._active;\n\t\tconst visibility = this._visibility;\n\t\tconst multiDrawStarts = this._multiDrawStarts;\n\t\tconst multiDrawCounts = this._multiDrawCounts;\n\t\tconst drawRanges = this._drawRanges;\n\t\tconst perObjectFrustumCulled = this.perObjectFrustumCulled;\n\n\t\t// prepare the frustum in the local frame\n\t\tif ( perObjectFrustumCulled ) {\n\n\t\t\t_projScreenMatrix$2\n\t\t\t\t.multiplyMatrices( camera.projectionMatrix, camera.matrixWorldInverse )\n\t\t\t\t.multiply( this.matrixWorld );\n\t\t\t_frustum.setFromProjectionMatrix(\n\t\t\t\t_projScreenMatrix$2,\n\t\t\t\trenderer.coordinateSystem\n\t\t\t);\n\n\t\t}\n\n\t\tlet count = 0;\n\t\tif ( this.sortObjects ) {\n\n\t\t\t// get the camera position in the local frame\n\t\t\t_invMatrixWorld.copy( this.matrixWorld ).invert();\n\t\t\t_vector$5.setFromMatrixPosition( camera.matrixWorld ).applyMatrix4( _invMatrixWorld );\n\t\t\t_forward.set( 0, 0, - 1 ).transformDirection( camera.matrixWorld ).transformDirection( _invMatrixWorld );\n\n\t\t\tfor ( let i = 0, l = visibility.length; i < l; i ++ ) {\n\n\t\t\t\tif ( visibility[ i ] && active[ i ] ) {\n\n\t\t\t\t\t// get the bounds in world space\n\t\t\t\t\tthis.getMatrixAt( i, _matrix$1 );\n\t\t\t\t\tthis.getBoundingSphereAt( i, _sphere$2 ).applyMatrix4( _matrix$1 );\n\n\t\t\t\t\t// determine whether the batched geometry is within the frustum\n\t\t\t\t\tlet culled = false;\n\t\t\t\t\tif ( perObjectFrustumCulled ) {\n\n\t\t\t\t\t\tculled = ! _frustum.intersectsSphere( _sphere$2 );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( ! culled ) {\n\n\t\t\t\t\t\t// get the distance from camera used for sorting\n\t\t\t\t\t\tconst z = _temp.subVectors( _sphere$2.center, _vector$5 ).dot( _forward );\n\t\t\t\t\t\t_renderList.push( drawRanges[ i ], z );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// Sort the draw ranges and prep for rendering\n\t\t\tconst list = _renderList.list;\n\t\t\tconst customSort = this.customSort;\n\t\t\tif ( customSort === null ) {\n\n\t\t\t\tlist.sort( material.transparent ? sortTransparent : sortOpaque );\n\n\t\t\t} else {\n\n\t\t\t\tcustomSort.call( this, list, camera );\n\n\t\t\t}\n\n\t\t\tfor ( let i = 0, l = list.length; i < l; i ++ ) {\n\n\t\t\t\tconst item = list[ i ];\n\t\t\t\tmultiDrawStarts[ count ] = item.start * bytesPerElement;\n\t\t\t\tmultiDrawCounts[ count ] = item.count;\n\t\t\t\tcount ++;\n\n\t\t\t}\n\n\t\t\t_renderList.reset();\n\n\t\t} else {\n\n\t\t\tfor ( let i = 0, l = visibility.length; i < l; i ++ ) {\n\n\t\t\t\tif ( visibility[ i ] && active[ i ] ) {\n\n\t\t\t\t\t// determine whether the batched geometry is within the frustum\n\t\t\t\t\tlet culled = false;\n\t\t\t\t\tif ( perObjectFrustumCulled ) {\n\n\t\t\t\t\t\t// get the bounds in world space\n\t\t\t\t\t\tthis.getMatrixAt( i, _matrix$1 );\n\t\t\t\t\t\tthis.getBoundingSphereAt( i, _sphere$2 ).applyMatrix4( _matrix$1 );\n\t\t\t\t\t\tculled = ! _frustum.intersectsSphere( _sphere$2 );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( ! culled ) {\n\n\t\t\t\t\t\tconst range = drawRanges[ i ];\n\t\t\t\t\t\tmultiDrawStarts[ count ] = range.start * bytesPerElement;\n\t\t\t\t\t\tmultiDrawCounts[ count ] = range.count;\n\t\t\t\t\t\tcount ++;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tthis._multiDrawCount = count;\n\t\tthis._visibilityChanged = false;\n\n\t}\n\n\tonBeforeShadow( renderer, object, camera, shadowCamera, geometry, depthMaterial/* , group */ ) {\n\n\t\tthis.onBeforeRender( renderer, null, shadowCamera, geometry, depthMaterial );\n\n\t}\n\n}\n\nclass LineBasicMaterial extends Material {\n\n\tconstructor( parameters ) {\n\n\t\tsuper();\n\n\t\tthis.isLineBasicMaterial = true;\n\n\t\tthis.type = 'LineBasicMaterial';\n\n\t\tthis.color = new Color( 0xffffff );\n\n\t\tthis.map = null;\n\n\t\tthis.linewidth = 1;\n\t\tthis.linecap = 'round';\n\t\tthis.linejoin = 'round';\n\n\t\tthis.fog = true;\n\n\t\tthis.setValues( parameters );\n\n\t}\n\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.color.copy( source.color );\n\n\t\tthis.map = source.map;\n\n\t\tthis.linewidth = source.linewidth;\n\t\tthis.linecap = source.linecap;\n\t\tthis.linejoin = source.linejoin;\n\n\t\tthis.fog = source.fog;\n\n\t\treturn this;\n\n\t}\n\n}\n\nconst _vStart = /*@__PURE__*/ new Vector3();\nconst _vEnd = /*@__PURE__*/ new Vector3();\n\nconst _inverseMatrix$1 = /*@__PURE__*/ new Matrix4();\nconst _ray$1 = /*@__PURE__*/ new Ray();\nconst _sphere$1 = /*@__PURE__*/ new Sphere();\n\nconst _intersectPointOnRay = /*@__PURE__*/ new Vector3();\nconst _intersectPointOnSegment = /*@__PURE__*/ new Vector3();\n\nclass Line extends Object3D {\n\n\tconstructor( geometry = new BufferGeometry(), material = new LineBasicMaterial() ) {\n\n\t\tsuper();\n\n\t\tthis.isLine = true;\n\n\t\tthis.type = 'Line';\n\n\t\tthis.geometry = geometry;\n\t\tthis.material = material;\n\n\t\tthis.updateMorphTargets();\n\n\t}\n\n\tcopy( source, recursive ) {\n\n\t\tsuper.copy( source, recursive );\n\n\t\tthis.material = Array.isArray( source.material ) ? source.material.slice() : source.material;\n\t\tthis.geometry = source.geometry;\n\n\t\treturn this;\n\n\t}\n\n\tcomputeLineDistances() {\n\n\t\tconst geometry = this.geometry;\n\n\t\t// we assume non-indexed geometry\n\n\t\tif ( geometry.index === null ) {\n\n\t\t\tconst positionAttribute = geometry.attributes.position;\n\t\t\tconst lineDistances = [ 0 ];\n\n\t\t\tfor ( let i = 1, l = positionAttribute.count; i < l; i ++ ) {\n\n\t\t\t\t_vStart.fromBufferAttribute( positionAttribute, i - 1 );\n\t\t\t\t_vEnd.fromBufferAttribute( positionAttribute, i );\n\n\t\t\t\tlineDistances[ i ] = lineDistances[ i - 1 ];\n\t\t\t\tlineDistances[ i ] += _vStart.distanceTo( _vEnd );\n\n\t\t\t}\n\n\t\t\tgeometry.setAttribute( 'lineDistance', new Float32BufferAttribute( lineDistances, 1 ) );\n\n\t\t} else {\n\n\t\t\tconsole.warn( 'THREE.Line.computeLineDistances(): Computation only possible with non-indexed BufferGeometry.' );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\traycast( raycaster, intersects ) {\n\n\t\tconst geometry = this.geometry;\n\t\tconst matrixWorld = this.matrixWorld;\n\t\tconst threshold = raycaster.params.Line.threshold;\n\t\tconst drawRange = geometry.drawRange;\n\n\t\t// Checking boundingSphere distance to ray\n\n\t\tif ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();\n\n\t\t_sphere$1.copy( geometry.boundingSphere );\n\t\t_sphere$1.applyMatrix4( matrixWorld );\n\t\t_sphere$1.radius += threshold;\n\n\t\tif ( raycaster.ray.intersectsSphere( _sphere$1 ) === false ) return;\n\n\t\t//\n\n\t\t_inverseMatrix$1.copy( matrixWorld ).invert();\n\t\t_ray$1.copy( raycaster.ray ).applyMatrix4( _inverseMatrix$1 );\n\n\t\tconst localThreshold = threshold / ( ( this.scale.x + this.scale.y + this.scale.z ) / 3 );\n\t\tconst localThresholdSq = localThreshold * localThreshold;\n\n\t\tconst step = this.isLineSegments ? 2 : 1;\n\n\t\tconst index = geometry.index;\n\t\tconst attributes = geometry.attributes;\n\t\tconst positionAttribute = attributes.position;\n\n\t\tif ( index !== null ) {\n\n\t\t\tconst start = Math.max( 0, drawRange.start );\n\t\t\tconst end = Math.min( index.count, ( drawRange.start + drawRange.count ) );\n\n\t\t\tfor ( let i = start, l = end - 1; i < l; i += step ) {\n\n\t\t\t\tconst a = index.getX( i );\n\t\t\t\tconst b = index.getX( i + 1 );\n\n\t\t\t\tconst intersect = checkIntersection( this, raycaster, _ray$1, localThresholdSq, a, b );\n\n\t\t\t\tif ( intersect ) {\n\n\t\t\t\t\tintersects.push( intersect );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tif ( this.isLineLoop ) {\n\n\t\t\t\tconst a = index.getX( end - 1 );\n\t\t\t\tconst b = index.getX( start );\n\n\t\t\t\tconst intersect = checkIntersection( this, raycaster, _ray$1, localThresholdSq, a, b );\n\n\t\t\t\tif ( intersect ) {\n\n\t\t\t\t\tintersects.push( intersect );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tconst start = Math.max( 0, drawRange.start );\n\t\t\tconst end = Math.min( positionAttribute.count, ( drawRange.start + drawRange.count ) );\n\n\t\t\tfor ( let i = start, l = end - 1; i < l; i += step ) {\n\n\t\t\t\tconst intersect = checkIntersection( this, raycaster, _ray$1, localThresholdSq, i, i + 1 );\n\n\t\t\t\tif ( intersect ) {\n\n\t\t\t\t\tintersects.push( intersect );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tif ( this.isLineLoop ) {\n\n\t\t\t\tconst intersect = checkIntersection( this, raycaster, _ray$1, localThresholdSq, end - 1, start );\n\n\t\t\t\tif ( intersect ) {\n\n\t\t\t\t\tintersects.push( intersect );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\tupdateMorphTargets() {\n\n\t\tconst geometry = this.geometry;\n\n\t\tconst morphAttributes = geometry.morphAttributes;\n\t\tconst keys = Object.keys( morphAttributes );\n\n\t\tif ( keys.length > 0 ) {\n\n\t\t\tconst morphAttribute = morphAttributes[ keys[ 0 ] ];\n\n\t\t\tif ( morphAttribute !== undefined ) {\n\n\t\t\t\tthis.morphTargetInfluences = [];\n\t\t\t\tthis.morphTargetDictionary = {};\n\n\t\t\t\tfor ( let m = 0, ml = morphAttribute.length; m < ml; m ++ ) {\n\n\t\t\t\t\tconst name = morphAttribute[ m ].name || String( m );\n\n\t\t\t\t\tthis.morphTargetInfluences.push( 0 );\n\t\t\t\t\tthis.morphTargetDictionary[ name ] = m;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n}\n\nfunction checkIntersection( object, raycaster, ray, thresholdSq, a, b ) {\n\n\tconst positionAttribute = object.geometry.attributes.position;\n\n\t_vStart.fromBufferAttribute( positionAttribute, a );\n\t_vEnd.fromBufferAttribute( positionAttribute, b );\n\n\tconst distSq = ray.distanceSqToSegment( _vStart, _vEnd, _intersectPointOnRay, _intersectPointOnSegment );\n\n\tif ( distSq > thresholdSq ) return;\n\n\t_intersectPointOnRay.applyMatrix4( object.matrixWorld ); // Move back to world space for distance calculation\n\n\tconst distance = raycaster.ray.origin.distanceTo( _intersectPointOnRay );\n\n\tif ( distance < raycaster.near || distance > raycaster.far ) return;\n\n\treturn {\n\n\t\tdistance: distance,\n\t\t// What do we want? intersection point on the ray or on the segment??\n\t\t// point: raycaster.ray.at( distance ),\n\t\tpoint: _intersectPointOnSegment.clone().applyMatrix4( object.matrixWorld ),\n\t\tindex: a,\n\t\tface: null,\n\t\tfaceIndex: null,\n\t\tobject: object\n\n\t};\n\n}\n\nconst _start = /*@__PURE__*/ new Vector3();\nconst _end = /*@__PURE__*/ new Vector3();\n\nclass LineSegments extends Line {\n\n\tconstructor( geometry, material ) {\n\n\t\tsuper( geometry, material );\n\n\t\tthis.isLineSegments = true;\n\n\t\tthis.type = 'LineSegments';\n\n\t}\n\n\tcomputeLineDistances() {\n\n\t\tconst geometry = this.geometry;\n\n\t\t// we assume non-indexed geometry\n\n\t\tif ( geometry.index === null ) {\n\n\t\t\tconst positionAttribute = geometry.attributes.position;\n\t\t\tconst lineDistances = [];\n\n\t\t\tfor ( let i = 0, l = positionAttribute.count; i < l; i += 2 ) {\n\n\t\t\t\t_start.fromBufferAttribute( positionAttribute, i );\n\t\t\t\t_end.fromBufferAttribute( positionAttribute, i + 1 );\n\n\t\t\t\tlineDistances[ i ] = ( i === 0 ) ? 0 : lineDistances[ i - 1 ];\n\t\t\t\tlineDistances[ i + 1 ] = lineDistances[ i ] + _start.distanceTo( _end );\n\n\t\t\t}\n\n\t\t\tgeometry.setAttribute( 'lineDistance', new Float32BufferAttribute( lineDistances, 1 ) );\n\n\t\t} else {\n\n\t\t\tconsole.warn( 'THREE.LineSegments.computeLineDistances(): Computation only possible with non-indexed BufferGeometry.' );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n}\n\nclass LineLoop extends Line {\n\n\tconstructor( geometry, material ) {\n\n\t\tsuper( geometry, material );\n\n\t\tthis.isLineLoop = true;\n\n\t\tthis.type = 'LineLoop';\n\n\t}\n\n}\n\nclass PointsMaterial extends Material {\n\n\tconstructor( parameters ) {\n\n\t\tsuper();\n\n\t\tthis.isPointsMaterial = true;\n\n\t\tthis.type = 'PointsMaterial';\n\n\t\tthis.color = new Color( 0xffffff );\n\n\t\tthis.map = null;\n\n\t\tthis.alphaMap = null;\n\n\t\tthis.size = 1;\n\t\tthis.sizeAttenuation = true;\n\n\t\tthis.fog = true;\n\n\t\tthis.setValues( parameters );\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.color.copy( source.color );\n\n\t\tthis.map = source.map;\n\n\t\tthis.alphaMap = source.alphaMap;\n\n\t\tthis.size = source.size;\n\t\tthis.sizeAttenuation = source.sizeAttenuation;\n\n\t\tthis.fog = source.fog;\n\n\t\treturn this;\n\n\t}\n\n}\n\nconst _inverseMatrix = /*@__PURE__*/ new Matrix4();\nconst _ray = /*@__PURE__*/ new Ray();\nconst _sphere = /*@__PURE__*/ new Sphere();\nconst _position$2 = /*@__PURE__*/ new Vector3();\n\nclass Points extends Object3D {\n\n\tconstructor( geometry = new BufferGeometry(), material = new PointsMaterial() ) {\n\n\t\tsuper();\n\n\t\tthis.isPoints = true;\n\n\t\tthis.type = 'Points';\n\n\t\tthis.geometry = geometry;\n\t\tthis.material = material;\n\n\t\tthis.updateMorphTargets();\n\n\t}\n\n\tcopy( source, recursive ) {\n\n\t\tsuper.copy( source, recursive );\n\n\t\tthis.material = Array.isArray( source.material ) ? source.material.slice() : source.material;\n\t\tthis.geometry = source.geometry;\n\n\t\treturn this;\n\n\t}\n\n\traycast( raycaster, intersects ) {\n\n\t\tconst geometry = this.geometry;\n\t\tconst matrixWorld = this.matrixWorld;\n\t\tconst threshold = raycaster.params.Points.threshold;\n\t\tconst drawRange = geometry.drawRange;\n\n\t\t// Checking boundingSphere distance to ray\n\n\t\tif ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();\n\n\t\t_sphere.copy( geometry.boundingSphere );\n\t\t_sphere.applyMatrix4( matrixWorld );\n\t\t_sphere.radius += threshold;\n\n\t\tif ( raycaster.ray.intersectsSphere( _sphere ) === false ) return;\n\n\t\t//\n\n\t\t_inverseMatrix.copy( matrixWorld ).invert();\n\t\t_ray.copy( raycaster.ray ).applyMatrix4( _inverseMatrix );\n\n\t\tconst localThreshold = threshold / ( ( this.scale.x + this.scale.y + this.scale.z ) / 3 );\n\t\tconst localThresholdSq = localThreshold * localThreshold;\n\n\t\tconst index = geometry.index;\n\t\tconst attributes = geometry.attributes;\n\t\tconst positionAttribute = attributes.position;\n\n\t\tif ( index !== null ) {\n\n\t\t\tconst start = Math.max( 0, drawRange.start );\n\t\t\tconst end = Math.min( index.count, ( drawRange.start + drawRange.count ) );\n\n\t\t\tfor ( let i = start, il = end; i < il; i ++ ) {\n\n\t\t\t\tconst a = index.getX( i );\n\n\t\t\t\t_position$2.fromBufferAttribute( positionAttribute, a );\n\n\t\t\t\ttestPoint( _position$2, a, localThresholdSq, matrixWorld, raycaster, intersects, this );\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tconst start = Math.max( 0, drawRange.start );\n\t\t\tconst end = Math.min( positionAttribute.count, ( drawRange.start + drawRange.count ) );\n\n\t\t\tfor ( let i = start, l = end; i < l; i ++ ) {\n\n\t\t\t\t_position$2.fromBufferAttribute( positionAttribute, i );\n\n\t\t\t\ttestPoint( _position$2, i, localThresholdSq, matrixWorld, raycaster, intersects, this );\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\tupdateMorphTargets() {\n\n\t\tconst geometry = this.geometry;\n\n\t\tconst morphAttributes = geometry.morphAttributes;\n\t\tconst keys = Object.keys( morphAttributes );\n\n\t\tif ( keys.length > 0 ) {\n\n\t\t\tconst morphAttribute = morphAttributes[ keys[ 0 ] ];\n\n\t\t\tif ( morphAttribute !== undefined ) {\n\n\t\t\t\tthis.morphTargetInfluences = [];\n\t\t\t\tthis.morphTargetDictionary = {};\n\n\t\t\t\tfor ( let m = 0, ml = morphAttribute.length; m < ml; m ++ ) {\n\n\t\t\t\t\tconst name = morphAttribute[ m ].name || String( m );\n\n\t\t\t\t\tthis.morphTargetInfluences.push( 0 );\n\t\t\t\t\tthis.morphTargetDictionary[ name ] = m;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n}\n\nfunction testPoint( point, index, localThresholdSq, matrixWorld, raycaster, intersects, object ) {\n\n\tconst rayPointDistanceSq = _ray.distanceSqToPoint( point );\n\n\tif ( rayPointDistanceSq < localThresholdSq ) {\n\n\t\tconst intersectPoint = new Vector3();\n\n\t\t_ray.closestPointToPoint( point, intersectPoint );\n\t\tintersectPoint.applyMatrix4( matrixWorld );\n\n\t\tconst distance = raycaster.ray.origin.distanceTo( intersectPoint );\n\n\t\tif ( distance < raycaster.near || distance > raycaster.far ) return;\n\n\t\tintersects.push( {\n\n\t\t\tdistance: distance,\n\t\t\tdistanceToRay: Math.sqrt( rayPointDistanceSq ),\n\t\t\tpoint: intersectPoint,\n\t\t\tindex: index,\n\t\t\tface: null,\n\t\t\tobject: object\n\n\t\t} );\n\n\t}\n\n}\n\nclass VideoTexture extends Texture {\n\n\tconstructor( video, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy ) {\n\n\t\tsuper( video, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy );\n\n\t\tthis.isVideoTexture = true;\n\n\t\tthis.minFilter = minFilter !== undefined ? minFilter : LinearFilter;\n\t\tthis.magFilter = magFilter !== undefined ? magFilter : LinearFilter;\n\n\t\tthis.generateMipmaps = false;\n\n\t\tconst scope = this;\n\n\t\tfunction updateVideo() {\n\n\t\t\tscope.needsUpdate = true;\n\t\t\tvideo.requestVideoFrameCallback( updateVideo );\n\n\t\t}\n\n\t\tif ( 'requestVideoFrameCallback' in video ) {\n\n\t\t\tvideo.requestVideoFrameCallback( updateVideo );\n\n\t\t}\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor( this.image ).copy( this );\n\n\t}\n\n\tupdate() {\n\n\t\tconst video = this.image;\n\t\tconst hasVideoFrameCallback = 'requestVideoFrameCallback' in video;\n\n\t\tif ( hasVideoFrameCallback === false && video.readyState >= video.HAVE_CURRENT_DATA ) {\n\n\t\t\tthis.needsUpdate = true;\n\n\t\t}\n\n\t}\n\n}\n\nclass FramebufferTexture extends Texture {\n\n\tconstructor( width, height ) {\n\n\t\tsuper( { width, height } );\n\n\t\tthis.isFramebufferTexture = true;\n\n\t\tthis.magFilter = NearestFilter;\n\t\tthis.minFilter = NearestFilter;\n\n\t\tthis.generateMipmaps = false;\n\n\t\tthis.needsUpdate = true;\n\n\t}\n\n}\n\nclass CompressedTexture extends Texture {\n\n\tconstructor( mipmaps, width, height, format, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy, colorSpace ) {\n\n\t\tsuper( null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, colorSpace );\n\n\t\tthis.isCompressedTexture = true;\n\n\t\tthis.image = { width: width, height: height };\n\t\tthis.mipmaps = mipmaps;\n\n\t\t// no flipping for cube textures\n\t\t// (also flipping doesn't work for compressed textures )\n\n\t\tthis.flipY = false;\n\n\t\t// can't generate mipmaps for compressed textures\n\t\t// mips must be embedded in DDS files\n\n\t\tthis.generateMipmaps = false;\n\n\t}\n\n}\n\nclass CompressedArrayTexture extends CompressedTexture {\n\n\tconstructor( mipmaps, width, height, depth, format, type ) {\n\n\t\tsuper( mipmaps, width, height, format, type );\n\n\t\tthis.isCompressedArrayTexture = true;\n\t\tthis.image.depth = depth;\n\t\tthis.wrapR = ClampToEdgeWrapping;\n\n\t\tthis.layerUpdates = new Set();\n\n\t}\n\n\taddLayerUpdates( layerIndex ) {\n\n\t\tthis.layerUpdates.add( layerIndex );\n\n\t}\n\n\tclearLayerUpdates() {\n\n\t\tthis.layerUpdates.clear();\n\n\t}\n\n}\n\nclass CompressedCubeTexture extends CompressedTexture {\n\n\tconstructor( images, format, type ) {\n\n\t\tsuper( undefined, images[ 0 ].width, images[ 0 ].height, format, type, CubeReflectionMapping );\n\n\t\tthis.isCompressedCubeTexture = true;\n\t\tthis.isCubeTexture = true;\n\n\t\tthis.image = images;\n\n\t}\n\n}\n\nclass CanvasTexture extends Texture {\n\n\tconstructor( canvas, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy ) {\n\n\t\tsuper( canvas, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy );\n\n\t\tthis.isCanvasTexture = true;\n\n\t\tthis.needsUpdate = true;\n\n\t}\n\n}\n\n/**\n * Extensible curve object.\n *\n * Some common of curve methods:\n * .getPoint( t, optionalTarget ), .getTangent( t, optionalTarget )\n * .getPointAt( u, optionalTarget ), .getTangentAt( u, optionalTarget )\n * .getPoints(), .getSpacedPoints()\n * .getLength()\n * .updateArcLengths()\n *\n * This following curves inherit from THREE.Curve:\n *\n * -- 2D curves --\n * THREE.ArcCurve\n * THREE.CubicBezierCurve\n * THREE.EllipseCurve\n * THREE.LineCurve\n * THREE.QuadraticBezierCurve\n * THREE.SplineCurve\n *\n * -- 3D curves --\n * THREE.CatmullRomCurve3\n * THREE.CubicBezierCurve3\n * THREE.LineCurve3\n * THREE.QuadraticBezierCurve3\n *\n * A series of curves can be represented as a THREE.CurvePath.\n *\n **/\n\nclass Curve {\n\n\tconstructor() {\n\n\t\tthis.type = 'Curve';\n\n\t\tthis.arcLengthDivisions = 200;\n\n\t}\n\n\t// Virtual base class method to overwrite and implement in subclasses\n\t//\t- t [0 .. 1]\n\n\tgetPoint( /* t, optionalTarget */ ) {\n\n\t\tconsole.warn( 'THREE.Curve: .getPoint() not implemented.' );\n\t\treturn null;\n\n\t}\n\n\t// Get point at relative position in curve according to arc length\n\t// - u [0 .. 1]\n\n\tgetPointAt( u, optionalTarget ) {\n\n\t\tconst t = this.getUtoTmapping( u );\n\t\treturn this.getPoint( t, optionalTarget );\n\n\t}\n\n\t// Get sequence of points using getPoint( t )\n\n\tgetPoints( divisions = 5 ) {\n\n\t\tconst points = [];\n\n\t\tfor ( let d = 0; d <= divisions; d ++ ) {\n\n\t\t\tpoints.push( this.getPoint( d / divisions ) );\n\n\t\t}\n\n\t\treturn points;\n\n\t}\n\n\t// Get sequence of points using getPointAt( u )\n\n\tgetSpacedPoints( divisions = 5 ) {\n\n\t\tconst points = [];\n\n\t\tfor ( let d = 0; d <= divisions; d ++ ) {\n\n\t\t\tpoints.push( this.getPointAt( d / divisions ) );\n\n\t\t}\n\n\t\treturn points;\n\n\t}\n\n\t// Get total curve arc length\n\n\tgetLength() {\n\n\t\tconst lengths = this.getLengths();\n\t\treturn lengths[ lengths.length - 1 ];\n\n\t}\n\n\t// Get list of cumulative segment lengths\n\n\tgetLengths( divisions = this.arcLengthDivisions ) {\n\n\t\tif ( this.cacheArcLengths &&\n\t\t\t( this.cacheArcLengths.length === divisions + 1 ) &&\n\t\t\t! this.needsUpdate ) {\n\n\t\t\treturn this.cacheArcLengths;\n\n\t\t}\n\n\t\tthis.needsUpdate = false;\n\n\t\tconst cache = [];\n\t\tlet current, last = this.getPoint( 0 );\n\t\tlet sum = 0;\n\n\t\tcache.push( 0 );\n\n\t\tfor ( let p = 1; p <= divisions; p ++ ) {\n\n\t\t\tcurrent = this.getPoint( p / divisions );\n\t\t\tsum += current.distanceTo( last );\n\t\t\tcache.push( sum );\n\t\t\tlast = current;\n\n\t\t}\n\n\t\tthis.cacheArcLengths = cache;\n\n\t\treturn cache; // { sums: cache, sum: sum }; Sum is in the last element.\n\n\t}\n\n\tupdateArcLengths() {\n\n\t\tthis.needsUpdate = true;\n\t\tthis.getLengths();\n\n\t}\n\n\t// Given u ( 0 .. 1 ), get a t to find p. This gives you points which are equidistant\n\n\tgetUtoTmapping( u, distance ) {\n\n\t\tconst arcLengths = this.getLengths();\n\n\t\tlet i = 0;\n\t\tconst il = arcLengths.length;\n\n\t\tlet targetArcLength; // The targeted u distance value to get\n\n\t\tif ( distance ) {\n\n\t\t\ttargetArcLength = distance;\n\n\t\t} else {\n\n\t\t\ttargetArcLength = u * arcLengths[ il - 1 ];\n\n\t\t}\n\n\t\t// binary search for the index with largest value smaller than target u distance\n\n\t\tlet low = 0, high = il - 1, comparison;\n\n\t\twhile ( low <= high ) {\n\n\t\t\ti = Math.floor( low + ( high - low ) / 2 ); // less likely to overflow, though probably not issue here, JS doesn't really have integers, all numbers are floats\n\n\t\t\tcomparison = arcLengths[ i ] - targetArcLength;\n\n\t\t\tif ( comparison < 0 ) {\n\n\t\t\t\tlow = i + 1;\n\n\t\t\t} else if ( comparison > 0 ) {\n\n\t\t\t\thigh = i - 1;\n\n\t\t\t} else {\n\n\t\t\t\thigh = i;\n\t\t\t\tbreak;\n\n\t\t\t\t// DONE\n\n\t\t\t}\n\n\t\t}\n\n\t\ti = high;\n\n\t\tif ( arcLengths[ i ] === targetArcLength ) {\n\n\t\t\treturn i / ( il - 1 );\n\n\t\t}\n\n\t\t// we could get finer grain at lengths, or use simple interpolation between two points\n\n\t\tconst lengthBefore = arcLengths[ i ];\n\t\tconst lengthAfter = arcLengths[ i + 1 ];\n\n\t\tconst segmentLength = lengthAfter - lengthBefore;\n\n\t\t// determine where we are between the 'before' and 'after' points\n\n\t\tconst segmentFraction = ( targetArcLength - lengthBefore ) / segmentLength;\n\n\t\t// add that fractional amount to t\n\n\t\tconst t = ( i + segmentFraction ) / ( il - 1 );\n\n\t\treturn t;\n\n\t}\n\n\t// Returns a unit vector tangent at t\n\t// In case any sub curve does not implement its tangent derivation,\n\t// 2 points a small delta apart will be used to find its gradient\n\t// which seems to give a reasonable approximation\n\n\tgetTangent( t, optionalTarget ) {\n\n\t\tconst delta = 0.0001;\n\t\tlet t1 = t - delta;\n\t\tlet t2 = t + delta;\n\n\t\t// Capping in case of danger\n\n\t\tif ( t1 < 0 ) t1 = 0;\n\t\tif ( t2 > 1 ) t2 = 1;\n\n\t\tconst pt1 = this.getPoint( t1 );\n\t\tconst pt2 = this.getPoint( t2 );\n\n\t\tconst tangent = optionalTarget || ( ( pt1.isVector2 ) ? new Vector2() : new Vector3() );\n\n\t\ttangent.copy( pt2 ).sub( pt1 ).normalize();\n\n\t\treturn tangent;\n\n\t}\n\n\tgetTangentAt( u, optionalTarget ) {\n\n\t\tconst t = this.getUtoTmapping( u );\n\t\treturn this.getTangent( t, optionalTarget );\n\n\t}\n\n\tcomputeFrenetFrames( segments, closed ) {\n\n\t\t// see http://www.cs.indiana.edu/pub/techreports/TR425.pdf\n\n\t\tconst normal = new Vector3();\n\n\t\tconst tangents = [];\n\t\tconst normals = [];\n\t\tconst binormals = [];\n\n\t\tconst vec = new Vector3();\n\t\tconst mat = new Matrix4();\n\n\t\t// compute the tangent vectors for each segment on the curve\n\n\t\tfor ( let i = 0; i <= segments; i ++ ) {\n\n\t\t\tconst u = i / segments;\n\n\t\t\ttangents[ i ] = this.getTangentAt( u, new Vector3() );\n\n\t\t}\n\n\t\t// select an initial normal vector perpendicular to the first tangent vector,\n\t\t// and in the direction of the minimum tangent xyz component\n\n\t\tnormals[ 0 ] = new Vector3();\n\t\tbinormals[ 0 ] = new Vector3();\n\t\tlet min = Number.MAX_VALUE;\n\t\tconst tx = Math.abs( tangents[ 0 ].x );\n\t\tconst ty = Math.abs( tangents[ 0 ].y );\n\t\tconst tz = Math.abs( tangents[ 0 ].z );\n\n\t\tif ( tx <= min ) {\n\n\t\t\tmin = tx;\n\t\t\tnormal.set( 1, 0, 0 );\n\n\t\t}\n\n\t\tif ( ty <= min ) {\n\n\t\t\tmin = ty;\n\t\t\tnormal.set( 0, 1, 0 );\n\n\t\t}\n\n\t\tif ( tz <= min ) {\n\n\t\t\tnormal.set( 0, 0, 1 );\n\n\t\t}\n\n\t\tvec.crossVectors( tangents[ 0 ], normal ).normalize();\n\n\t\tnormals[ 0 ].crossVectors( tangents[ 0 ], vec );\n\t\tbinormals[ 0 ].crossVectors( tangents[ 0 ], normals[ 0 ] );\n\n\n\t\t// compute the slowly-varying normal and binormal vectors for each segment on the curve\n\n\t\tfor ( let i = 1; i <= segments; i ++ ) {\n\n\t\t\tnormals[ i ] = normals[ i - 1 ].clone();\n\n\t\t\tbinormals[ i ] = binormals[ i - 1 ].clone();\n\n\t\t\tvec.crossVectors( tangents[ i - 1 ], tangents[ i ] );\n\n\t\t\tif ( vec.length() > Number.EPSILON ) {\n\n\t\t\t\tvec.normalize();\n\n\t\t\t\tconst theta = Math.acos( clamp( tangents[ i - 1 ].dot( tangents[ i ] ), - 1, 1 ) ); // clamp for floating pt errors\n\n\t\t\t\tnormals[ i ].applyMatrix4( mat.makeRotationAxis( vec, theta ) );\n\n\t\t\t}\n\n\t\t\tbinormals[ i ].crossVectors( tangents[ i ], normals[ i ] );\n\n\t\t}\n\n\t\t// if the curve is closed, postprocess the vectors so the first and last normal vectors are the same\n\n\t\tif ( closed === true ) {\n\n\t\t\tlet theta = Math.acos( clamp( normals[ 0 ].dot( normals[ segments ] ), - 1, 1 ) );\n\t\t\ttheta /= segments;\n\n\t\t\tif ( tangents[ 0 ].dot( vec.crossVectors( normals[ 0 ], normals[ segments ] ) ) > 0 ) {\n\n\t\t\t\ttheta = - theta;\n\n\t\t\t}\n\n\t\t\tfor ( let i = 1; i <= segments; i ++ ) {\n\n\t\t\t\t// twist a little...\n\t\t\t\tnormals[ i ].applyMatrix4( mat.makeRotationAxis( tangents[ i ], theta * i ) );\n\t\t\t\tbinormals[ i ].crossVectors( tangents[ i ], normals[ i ] );\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn {\n\t\t\ttangents: tangents,\n\t\t\tnormals: normals,\n\t\t\tbinormals: binormals\n\t\t};\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n\tcopy( source ) {\n\n\t\tthis.arcLengthDivisions = source.arcLengthDivisions;\n\n\t\treturn this;\n\n\t}\n\n\ttoJSON() {\n\n\t\tconst data = {\n\t\t\tmetadata: {\n\t\t\t\tversion: 4.6,\n\t\t\t\ttype: 'Curve',\n\t\t\t\tgenerator: 'Curve.toJSON'\n\t\t\t}\n\t\t};\n\n\t\tdata.arcLengthDivisions = this.arcLengthDivisions;\n\t\tdata.type = this.type;\n\n\t\treturn data;\n\n\t}\n\n\tfromJSON( json ) {\n\n\t\tthis.arcLengthDivisions = json.arcLengthDivisions;\n\n\t\treturn this;\n\n\t}\n\n}\n\nclass EllipseCurve extends Curve {\n\n\tconstructor( aX = 0, aY = 0, xRadius = 1, yRadius = 1, aStartAngle = 0, aEndAngle = Math.PI * 2, aClockwise = false, aRotation = 0 ) {\n\n\t\tsuper();\n\n\t\tthis.isEllipseCurve = true;\n\n\t\tthis.type = 'EllipseCurve';\n\n\t\tthis.aX = aX;\n\t\tthis.aY = aY;\n\n\t\tthis.xRadius = xRadius;\n\t\tthis.yRadius = yRadius;\n\n\t\tthis.aStartAngle = aStartAngle;\n\t\tthis.aEndAngle = aEndAngle;\n\n\t\tthis.aClockwise = aClockwise;\n\n\t\tthis.aRotation = aRotation;\n\n\t}\n\n\tgetPoint( t, optionalTarget = new Vector2() ) {\n\n\t\tconst point = optionalTarget;\n\n\t\tconst twoPi = Math.PI * 2;\n\t\tlet deltaAngle = this.aEndAngle - this.aStartAngle;\n\t\tconst samePoints = Math.abs( deltaAngle ) < Number.EPSILON;\n\n\t\t// ensures that deltaAngle is 0 .. 2 PI\n\t\twhile ( deltaAngle < 0 ) deltaAngle += twoPi;\n\t\twhile ( deltaAngle > twoPi ) deltaAngle -= twoPi;\n\n\t\tif ( deltaAngle < Number.EPSILON ) {\n\n\t\t\tif ( samePoints ) {\n\n\t\t\t\tdeltaAngle = 0;\n\n\t\t\t} else {\n\n\t\t\t\tdeltaAngle = twoPi;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( this.aClockwise === true && ! samePoints ) {\n\n\t\t\tif ( deltaAngle === twoPi ) {\n\n\t\t\t\tdeltaAngle = - twoPi;\n\n\t\t\t} else {\n\n\t\t\t\tdeltaAngle = deltaAngle - twoPi;\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst angle = this.aStartAngle + t * deltaAngle;\n\t\tlet x = this.aX + this.xRadius * Math.cos( angle );\n\t\tlet y = this.aY + this.yRadius * Math.sin( angle );\n\n\t\tif ( this.aRotation !== 0 ) {\n\n\t\t\tconst cos = Math.cos( this.aRotation );\n\t\t\tconst sin = Math.sin( this.aRotation );\n\n\t\t\tconst tx = x - this.aX;\n\t\t\tconst ty = y - this.aY;\n\n\t\t\t// Rotate the point about the center of the ellipse.\n\t\t\tx = tx * cos - ty * sin + this.aX;\n\t\t\ty = tx * sin + ty * cos + this.aY;\n\n\t\t}\n\n\t\treturn point.set( x, y );\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.aX = source.aX;\n\t\tthis.aY = source.aY;\n\n\t\tthis.xRadius = source.xRadius;\n\t\tthis.yRadius = source.yRadius;\n\n\t\tthis.aStartAngle = source.aStartAngle;\n\t\tthis.aEndAngle = source.aEndAngle;\n\n\t\tthis.aClockwise = source.aClockwise;\n\n\t\tthis.aRotation = source.aRotation;\n\n\t\treturn this;\n\n\t}\n\n\ttoJSON() {\n\n\t\tconst data = super.toJSON();\n\n\t\tdata.aX = this.aX;\n\t\tdata.aY = this.aY;\n\n\t\tdata.xRadius = this.xRadius;\n\t\tdata.yRadius = this.yRadius;\n\n\t\tdata.aStartAngle = this.aStartAngle;\n\t\tdata.aEndAngle = this.aEndAngle;\n\n\t\tdata.aClockwise = this.aClockwise;\n\n\t\tdata.aRotation = this.aRotation;\n\n\t\treturn data;\n\n\t}\n\n\tfromJSON( json ) {\n\n\t\tsuper.fromJSON( json );\n\n\t\tthis.aX = json.aX;\n\t\tthis.aY = json.aY;\n\n\t\tthis.xRadius = json.xRadius;\n\t\tthis.yRadius = json.yRadius;\n\n\t\tthis.aStartAngle = json.aStartAngle;\n\t\tthis.aEndAngle = json.aEndAngle;\n\n\t\tthis.aClockwise = json.aClockwise;\n\n\t\tthis.aRotation = json.aRotation;\n\n\t\treturn this;\n\n\t}\n\n}\n\nclass ArcCurve extends EllipseCurve {\n\n\tconstructor( aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise ) {\n\n\t\tsuper( aX, aY, aRadius, aRadius, aStartAngle, aEndAngle, aClockwise );\n\n\t\tthis.isArcCurve = true;\n\n\t\tthis.type = 'ArcCurve';\n\n\t}\n\n}\n\n/**\n * Centripetal CatmullRom Curve - which is useful for avoiding\n * cusps and self-intersections in non-uniform catmull rom curves.\n * http://www.cemyuksel.com/research/catmullrom_param/catmullrom.pdf\n *\n * curve.type accepts centripetal(default), chordal and catmullrom\n * curve.tension is used for catmullrom which defaults to 0.5\n */\n\n\n/*\nBased on an optimized c++ solution in\n - http://stackoverflow.com/questions/9489736/catmull-rom-curve-with-no-cusps-and-no-self-intersections/\n - http://ideone.com/NoEbVM\n\nThis CubicPoly class could be used for reusing some variables and calculations,\nbut for three.js curve use, it could be possible inlined and flatten into a single function call\nwhich can be placed in CurveUtils.\n*/\n\nfunction CubicPoly() {\n\n\tlet c0 = 0, c1 = 0, c2 = 0, c3 = 0;\n\n\t/*\n\t * Compute coefficients for a cubic polynomial\n\t * p(s) = c0 + c1*s + c2*s^2 + c3*s^3\n\t * such that\n\t * p(0) = x0, p(1) = x1\n\t * and\n\t * p'(0) = t0, p'(1) = t1.\n\t */\n\tfunction init( x0, x1, t0, t1 ) {\n\n\t\tc0 = x0;\n\t\tc1 = t0;\n\t\tc2 = - 3 * x0 + 3 * x1 - 2 * t0 - t1;\n\t\tc3 = 2 * x0 - 2 * x1 + t0 + t1;\n\n\t}\n\n\treturn {\n\n\t\tinitCatmullRom: function ( x0, x1, x2, x3, tension ) {\n\n\t\t\tinit( x1, x2, tension * ( x2 - x0 ), tension * ( x3 - x1 ) );\n\n\t\t},\n\n\t\tinitNonuniformCatmullRom: function ( x0, x1, x2, x3, dt0, dt1, dt2 ) {\n\n\t\t\t// compute tangents when parameterized in [t1,t2]\n\t\t\tlet t1 = ( x1 - x0 ) / dt0 - ( x2 - x0 ) / ( dt0 + dt1 ) + ( x2 - x1 ) / dt1;\n\t\t\tlet t2 = ( x2 - x1 ) / dt1 - ( x3 - x1 ) / ( dt1 + dt2 ) + ( x3 - x2 ) / dt2;\n\n\t\t\t// rescale tangents for parametrization in [0,1]\n\t\t\tt1 *= dt1;\n\t\t\tt2 *= dt1;\n\n\t\t\tinit( x1, x2, t1, t2 );\n\n\t\t},\n\n\t\tcalc: function ( t ) {\n\n\t\t\tconst t2 = t * t;\n\t\t\tconst t3 = t2 * t;\n\t\t\treturn c0 + c1 * t + c2 * t2 + c3 * t3;\n\n\t\t}\n\n\t};\n\n}\n\n//\n\nconst tmp = /*@__PURE__*/ new Vector3();\nconst px = /*@__PURE__*/ new CubicPoly();\nconst py = /*@__PURE__*/ new CubicPoly();\nconst pz = /*@__PURE__*/ new CubicPoly();\n\nclass CatmullRomCurve3 extends Curve {\n\n\tconstructor( points = [], closed = false, curveType = 'centripetal', tension = 0.5 ) {\n\n\t\tsuper();\n\n\t\tthis.isCatmullRomCurve3 = true;\n\n\t\tthis.type = 'CatmullRomCurve3';\n\n\t\tthis.points = points;\n\t\tthis.closed = closed;\n\t\tthis.curveType = curveType;\n\t\tthis.tension = tension;\n\n\t}\n\n\tgetPoint( t, optionalTarget = new Vector3() ) {\n\n\t\tconst point = optionalTarget;\n\n\t\tconst points = this.points;\n\t\tconst l = points.length;\n\n\t\tconst p = ( l - ( this.closed ? 0 : 1 ) ) * t;\n\t\tlet intPoint = Math.floor( p );\n\t\tlet weight = p - intPoint;\n\n\t\tif ( this.closed ) {\n\n\t\t\tintPoint += intPoint > 0 ? 0 : ( Math.floor( Math.abs( intPoint ) / l ) + 1 ) * l;\n\n\t\t} else if ( weight === 0 && intPoint === l - 1 ) {\n\n\t\t\tintPoint = l - 2;\n\t\t\tweight = 1;\n\n\t\t}\n\n\t\tlet p0, p3; // 4 points (p1 & p2 defined below)\n\n\t\tif ( this.closed || intPoint > 0 ) {\n\n\t\t\tp0 = points[ ( intPoint - 1 ) % l ];\n\n\t\t} else {\n\n\t\t\t// extrapolate first point\n\t\t\ttmp.subVectors( points[ 0 ], points[ 1 ] ).add( points[ 0 ] );\n\t\t\tp0 = tmp;\n\n\t\t}\n\n\t\tconst p1 = points[ intPoint % l ];\n\t\tconst p2 = points[ ( intPoint + 1 ) % l ];\n\n\t\tif ( this.closed || intPoint + 2 < l ) {\n\n\t\t\tp3 = points[ ( intPoint + 2 ) % l ];\n\n\t\t} else {\n\n\t\t\t// extrapolate last point\n\t\t\ttmp.subVectors( points[ l - 1 ], points[ l - 2 ] ).add( points[ l - 1 ] );\n\t\t\tp3 = tmp;\n\n\t\t}\n\n\t\tif ( this.curveType === 'centripetal' || this.curveType === 'chordal' ) {\n\n\t\t\t// init Centripetal / Chordal Catmull-Rom\n\t\t\tconst pow = this.curveType === 'chordal' ? 0.5 : 0.25;\n\t\t\tlet dt0 = Math.pow( p0.distanceToSquared( p1 ), pow );\n\t\t\tlet dt1 = Math.pow( p1.distanceToSquared( p2 ), pow );\n\t\t\tlet dt2 = Math.pow( p2.distanceToSquared( p3 ), pow );\n\n\t\t\t// safety check for repeated points\n\t\t\tif ( dt1 < 1e-4 ) dt1 = 1.0;\n\t\t\tif ( dt0 < 1e-4 ) dt0 = dt1;\n\t\t\tif ( dt2 < 1e-4 ) dt2 = dt1;\n\n\t\t\tpx.initNonuniformCatmullRom( p0.x, p1.x, p2.x, p3.x, dt0, dt1, dt2 );\n\t\t\tpy.initNonuniformCatmullRom( p0.y, p1.y, p2.y, p3.y, dt0, dt1, dt2 );\n\t\t\tpz.initNonuniformCatmullRom( p0.z, p1.z, p2.z, p3.z, dt0, dt1, dt2 );\n\n\t\t} else if ( this.curveType === 'catmullrom' ) {\n\n\t\t\tpx.initCatmullRom( p0.x, p1.x, p2.x, p3.x, this.tension );\n\t\t\tpy.initCatmullRom( p0.y, p1.y, p2.y, p3.y, this.tension );\n\t\t\tpz.initCatmullRom( p0.z, p1.z, p2.z, p3.z, this.tension );\n\n\t\t}\n\n\t\tpoint.set(\n\t\t\tpx.calc( weight ),\n\t\t\tpy.calc( weight ),\n\t\t\tpz.calc( weight )\n\t\t);\n\n\t\treturn point;\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.points = [];\n\n\t\tfor ( let i = 0, l = source.points.length; i < l; i ++ ) {\n\n\t\t\tconst point = source.points[ i ];\n\n\t\t\tthis.points.push( point.clone() );\n\n\t\t}\n\n\t\tthis.closed = source.closed;\n\t\tthis.curveType = source.curveType;\n\t\tthis.tension = source.tension;\n\n\t\treturn this;\n\n\t}\n\n\ttoJSON() {\n\n\t\tconst data = super.toJSON();\n\n\t\tdata.points = [];\n\n\t\tfor ( let i = 0, l = this.points.length; i < l; i ++ ) {\n\n\t\t\tconst point = this.points[ i ];\n\t\t\tdata.points.push( point.toArray() );\n\n\t\t}\n\n\t\tdata.closed = this.closed;\n\t\tdata.curveType = this.curveType;\n\t\tdata.tension = this.tension;\n\n\t\treturn data;\n\n\t}\n\n\tfromJSON( json ) {\n\n\t\tsuper.fromJSON( json );\n\n\t\tthis.points = [];\n\n\t\tfor ( let i = 0, l = json.points.length; i < l; i ++ ) {\n\n\t\t\tconst point = json.points[ i ];\n\t\t\tthis.points.push( new Vector3().fromArray( point ) );\n\n\t\t}\n\n\t\tthis.closed = json.closed;\n\t\tthis.curveType = json.curveType;\n\t\tthis.tension = json.tension;\n\n\t\treturn this;\n\n\t}\n\n}\n\n/**\n * Bezier Curves formulas obtained from\n * https://en.wikipedia.org/wiki/B%C3%A9zier_curve\n */\n\nfunction CatmullRom( t, p0, p1, p2, p3 ) {\n\n\tconst v0 = ( p2 - p0 ) * 0.5;\n\tconst v1 = ( p3 - p1 ) * 0.5;\n\tconst t2 = t * t;\n\tconst t3 = t * t2;\n\treturn ( 2 * p1 - 2 * p2 + v0 + v1 ) * t3 + ( - 3 * p1 + 3 * p2 - 2 * v0 - v1 ) * t2 + v0 * t + p1;\n\n}\n\n//\n\nfunction QuadraticBezierP0( t, p ) {\n\n\tconst k = 1 - t;\n\treturn k * k * p;\n\n}\n\nfunction QuadraticBezierP1( t, p ) {\n\n\treturn 2 * ( 1 - t ) * t * p;\n\n}\n\nfunction QuadraticBezierP2( t, p ) {\n\n\treturn t * t * p;\n\n}\n\nfunction QuadraticBezier( t, p0, p1, p2 ) {\n\n\treturn QuadraticBezierP0( t, p0 ) + QuadraticBezierP1( t, p1 ) +\n\t\tQuadraticBezierP2( t, p2 );\n\n}\n\n//\n\nfunction CubicBezierP0( t, p ) {\n\n\tconst k = 1 - t;\n\treturn k * k * k * p;\n\n}\n\nfunction CubicBezierP1( t, p ) {\n\n\tconst k = 1 - t;\n\treturn 3 * k * k * t * p;\n\n}\n\nfunction CubicBezierP2( t, p ) {\n\n\treturn 3 * ( 1 - t ) * t * t * p;\n\n}\n\nfunction CubicBezierP3( t, p ) {\n\n\treturn t * t * t * p;\n\n}\n\nfunction CubicBezier( t, p0, p1, p2, p3 ) {\n\n\treturn CubicBezierP0( t, p0 ) + CubicBezierP1( t, p1 ) + CubicBezierP2( t, p2 ) +\n\t\tCubicBezierP3( t, p3 );\n\n}\n\nclass CubicBezierCurve extends Curve {\n\n\tconstructor( v0 = new Vector2(), v1 = new Vector2(), v2 = new Vector2(), v3 = new Vector2() ) {\n\n\t\tsuper();\n\n\t\tthis.isCubicBezierCurve = true;\n\n\t\tthis.type = 'CubicBezierCurve';\n\n\t\tthis.v0 = v0;\n\t\tthis.v1 = v1;\n\t\tthis.v2 = v2;\n\t\tthis.v3 = v3;\n\n\t}\n\n\tgetPoint( t, optionalTarget = new Vector2() ) {\n\n\t\tconst point = optionalTarget;\n\n\t\tconst v0 = this.v0, v1 = this.v1, v2 = this.v2, v3 = this.v3;\n\n\t\tpoint.set(\n\t\t\tCubicBezier( t, v0.x, v1.x, v2.x, v3.x ),\n\t\t\tCubicBezier( t, v0.y, v1.y, v2.y, v3.y )\n\t\t);\n\n\t\treturn point;\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.v0.copy( source.v0 );\n\t\tthis.v1.copy( source.v1 );\n\t\tthis.v2.copy( source.v2 );\n\t\tthis.v3.copy( source.v3 );\n\n\t\treturn this;\n\n\t}\n\n\ttoJSON() {\n\n\t\tconst data = super.toJSON();\n\n\t\tdata.v0 = this.v0.toArray();\n\t\tdata.v1 = this.v1.toArray();\n\t\tdata.v2 = this.v2.toArray();\n\t\tdata.v3 = this.v3.toArray();\n\n\t\treturn data;\n\n\t}\n\n\tfromJSON( json ) {\n\n\t\tsuper.fromJSON( json );\n\n\t\tthis.v0.fromArray( json.v0 );\n\t\tthis.v1.fromArray( json.v1 );\n\t\tthis.v2.fromArray( json.v2 );\n\t\tthis.v3.fromArray( json.v3 );\n\n\t\treturn this;\n\n\t}\n\n}\n\nclass CubicBezierCurve3 extends Curve {\n\n\tconstructor( v0 = new Vector3(), v1 = new Vector3(), v2 = new Vector3(), v3 = new Vector3() ) {\n\n\t\tsuper();\n\n\t\tthis.isCubicBezierCurve3 = true;\n\n\t\tthis.type = 'CubicBezierCurve3';\n\n\t\tthis.v0 = v0;\n\t\tthis.v1 = v1;\n\t\tthis.v2 = v2;\n\t\tthis.v3 = v3;\n\n\t}\n\n\tgetPoint( t, optionalTarget = new Vector3() ) {\n\n\t\tconst point = optionalTarget;\n\n\t\tconst v0 = this.v0, v1 = this.v1, v2 = this.v2, v3 = this.v3;\n\n\t\tpoint.set(\n\t\t\tCubicBezier( t, v0.x, v1.x, v2.x, v3.x ),\n\t\t\tCubicBezier( t, v0.y, v1.y, v2.y, v3.y ),\n\t\t\tCubicBezier( t, v0.z, v1.z, v2.z, v3.z )\n\t\t);\n\n\t\treturn point;\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.v0.copy( source.v0 );\n\t\tthis.v1.copy( source.v1 );\n\t\tthis.v2.copy( source.v2 );\n\t\tthis.v3.copy( source.v3 );\n\n\t\treturn this;\n\n\t}\n\n\ttoJSON() {\n\n\t\tconst data = super.toJSON();\n\n\t\tdata.v0 = this.v0.toArray();\n\t\tdata.v1 = this.v1.toArray();\n\t\tdata.v2 = this.v2.toArray();\n\t\tdata.v3 = this.v3.toArray();\n\n\t\treturn data;\n\n\t}\n\n\tfromJSON( json ) {\n\n\t\tsuper.fromJSON( json );\n\n\t\tthis.v0.fromArray( json.v0 );\n\t\tthis.v1.fromArray( json.v1 );\n\t\tthis.v2.fromArray( json.v2 );\n\t\tthis.v3.fromArray( json.v3 );\n\n\t\treturn this;\n\n\t}\n\n}\n\nclass LineCurve extends Curve {\n\n\tconstructor( v1 = new Vector2(), v2 = new Vector2() ) {\n\n\t\tsuper();\n\n\t\tthis.isLineCurve = true;\n\n\t\tthis.type = 'LineCurve';\n\n\t\tthis.v1 = v1;\n\t\tthis.v2 = v2;\n\n\t}\n\n\tgetPoint( t, optionalTarget = new Vector2() ) {\n\n\t\tconst point = optionalTarget;\n\n\t\tif ( t === 1 ) {\n\n\t\t\tpoint.copy( this.v2 );\n\n\t\t} else {\n\n\t\t\tpoint.copy( this.v2 ).sub( this.v1 );\n\t\t\tpoint.multiplyScalar( t ).add( this.v1 );\n\n\t\t}\n\n\t\treturn point;\n\n\t}\n\n\t// Line curve is linear, so we can overwrite default getPointAt\n\tgetPointAt( u, optionalTarget ) {\n\n\t\treturn this.getPoint( u, optionalTarget );\n\n\t}\n\n\tgetTangent( t, optionalTarget = new Vector2() ) {\n\n\t\treturn optionalTarget.subVectors( this.v2, this.v1 ).normalize();\n\n\t}\n\n\tgetTangentAt( u, optionalTarget ) {\n\n\t\treturn this.getTangent( u, optionalTarget );\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.v1.copy( source.v1 );\n\t\tthis.v2.copy( source.v2 );\n\n\t\treturn this;\n\n\t}\n\n\ttoJSON() {\n\n\t\tconst data = super.toJSON();\n\n\t\tdata.v1 = this.v1.toArray();\n\t\tdata.v2 = this.v2.toArray();\n\n\t\treturn data;\n\n\t}\n\n\tfromJSON( json ) {\n\n\t\tsuper.fromJSON( json );\n\n\t\tthis.v1.fromArray( json.v1 );\n\t\tthis.v2.fromArray( json.v2 );\n\n\t\treturn this;\n\n\t}\n\n}\n\nclass LineCurve3 extends Curve {\n\n\tconstructor( v1 = new Vector3(), v2 = new Vector3() ) {\n\n\t\tsuper();\n\n\t\tthis.isLineCurve3 = true;\n\n\t\tthis.type = 'LineCurve3';\n\n\t\tthis.v1 = v1;\n\t\tthis.v2 = v2;\n\n\t}\n\n\tgetPoint( t, optionalTarget = new Vector3() ) {\n\n\t\tconst point = optionalTarget;\n\n\t\tif ( t === 1 ) {\n\n\t\t\tpoint.copy( this.v2 );\n\n\t\t} else {\n\n\t\t\tpoint.copy( this.v2 ).sub( this.v1 );\n\t\t\tpoint.multiplyScalar( t ).add( this.v1 );\n\n\t\t}\n\n\t\treturn point;\n\n\t}\n\n\t// Line curve is linear, so we can overwrite default getPointAt\n\tgetPointAt( u, optionalTarget ) {\n\n\t\treturn this.getPoint( u, optionalTarget );\n\n\t}\n\n\tgetTangent( t, optionalTarget = new Vector3() ) {\n\n\t\treturn optionalTarget.subVectors( this.v2, this.v1 ).normalize();\n\n\t}\n\n\tgetTangentAt( u, optionalTarget ) {\n\n\t\treturn this.getTangent( u, optionalTarget );\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.v1.copy( source.v1 );\n\t\tthis.v2.copy( source.v2 );\n\n\t\treturn this;\n\n\t}\n\n\ttoJSON() {\n\n\t\tconst data = super.toJSON();\n\n\t\tdata.v1 = this.v1.toArray();\n\t\tdata.v2 = this.v2.toArray();\n\n\t\treturn data;\n\n\t}\n\n\tfromJSON( json ) {\n\n\t\tsuper.fromJSON( json );\n\n\t\tthis.v1.fromArray( json.v1 );\n\t\tthis.v2.fromArray( json.v2 );\n\n\t\treturn this;\n\n\t}\n\n}\n\nclass QuadraticBezierCurve extends Curve {\n\n\tconstructor( v0 = new Vector2(), v1 = new Vector2(), v2 = new Vector2() ) {\n\n\t\tsuper();\n\n\t\tthis.isQuadraticBezierCurve = true;\n\n\t\tthis.type = 'QuadraticBezierCurve';\n\n\t\tthis.v0 = v0;\n\t\tthis.v1 = v1;\n\t\tthis.v2 = v2;\n\n\t}\n\n\tgetPoint( t, optionalTarget = new Vector2() ) {\n\n\t\tconst point = optionalTarget;\n\n\t\tconst v0 = this.v0, v1 = this.v1, v2 = this.v2;\n\n\t\tpoint.set(\n\t\t\tQuadraticBezier( t, v0.x, v1.x, v2.x ),\n\t\t\tQuadraticBezier( t, v0.y, v1.y, v2.y )\n\t\t);\n\n\t\treturn point;\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.v0.copy( source.v0 );\n\t\tthis.v1.copy( source.v1 );\n\t\tthis.v2.copy( source.v2 );\n\n\t\treturn this;\n\n\t}\n\n\ttoJSON() {\n\n\t\tconst data = super.toJSON();\n\n\t\tdata.v0 = this.v0.toArray();\n\t\tdata.v1 = this.v1.toArray();\n\t\tdata.v2 = this.v2.toArray();\n\n\t\treturn data;\n\n\t}\n\n\tfromJSON( json ) {\n\n\t\tsuper.fromJSON( json );\n\n\t\tthis.v0.fromArray( json.v0 );\n\t\tthis.v1.fromArray( json.v1 );\n\t\tthis.v2.fromArray( json.v2 );\n\n\t\treturn this;\n\n\t}\n\n}\n\nclass QuadraticBezierCurve3 extends Curve {\n\n\tconstructor( v0 = new Vector3(), v1 = new Vector3(), v2 = new Vector3() ) {\n\n\t\tsuper();\n\n\t\tthis.isQuadraticBezierCurve3 = true;\n\n\t\tthis.type = 'QuadraticBezierCurve3';\n\n\t\tthis.v0 = v0;\n\t\tthis.v1 = v1;\n\t\tthis.v2 = v2;\n\n\t}\n\n\tgetPoint( t, optionalTarget = new Vector3() ) {\n\n\t\tconst point = optionalTarget;\n\n\t\tconst v0 = this.v0, v1 = this.v1, v2 = this.v2;\n\n\t\tpoint.set(\n\t\t\tQuadraticBezier( t, v0.x, v1.x, v2.x ),\n\t\t\tQuadraticBezier( t, v0.y, v1.y, v2.y ),\n\t\t\tQuadraticBezier( t, v0.z, v1.z, v2.z )\n\t\t);\n\n\t\treturn point;\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.v0.copy( source.v0 );\n\t\tthis.v1.copy( source.v1 );\n\t\tthis.v2.copy( source.v2 );\n\n\t\treturn this;\n\n\t}\n\n\ttoJSON() {\n\n\t\tconst data = super.toJSON();\n\n\t\tdata.v0 = this.v0.toArray();\n\t\tdata.v1 = this.v1.toArray();\n\t\tdata.v2 = this.v2.toArray();\n\n\t\treturn data;\n\n\t}\n\n\tfromJSON( json ) {\n\n\t\tsuper.fromJSON( json );\n\n\t\tthis.v0.fromArray( json.v0 );\n\t\tthis.v1.fromArray( json.v1 );\n\t\tthis.v2.fromArray( json.v2 );\n\n\t\treturn this;\n\n\t}\n\n}\n\nclass SplineCurve extends Curve {\n\n\tconstructor( points = [] ) {\n\n\t\tsuper();\n\n\t\tthis.isSplineCurve = true;\n\n\t\tthis.type = 'SplineCurve';\n\n\t\tthis.points = points;\n\n\t}\n\n\tgetPoint( t, optionalTarget = new Vector2() ) {\n\n\t\tconst point = optionalTarget;\n\n\t\tconst points = this.points;\n\t\tconst p = ( points.length - 1 ) * t;\n\n\t\tconst intPoint = Math.floor( p );\n\t\tconst weight = p - intPoint;\n\n\t\tconst p0 = points[ intPoint === 0 ? intPoint : intPoint - 1 ];\n\t\tconst p1 = points[ intPoint ];\n\t\tconst p2 = points[ intPoint > points.length - 2 ? points.length - 1 : intPoint + 1 ];\n\t\tconst p3 = points[ intPoint > points.length - 3 ? points.length - 1 : intPoint + 2 ];\n\n\t\tpoint.set(\n\t\t\tCatmullRom( weight, p0.x, p1.x, p2.x, p3.x ),\n\t\t\tCatmullRom( weight, p0.y, p1.y, p2.y, p3.y )\n\t\t);\n\n\t\treturn point;\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.points = [];\n\n\t\tfor ( let i = 0, l = source.points.length; i < l; i ++ ) {\n\n\t\t\tconst point = source.points[ i ];\n\n\t\t\tthis.points.push( point.clone() );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\ttoJSON() {\n\n\t\tconst data = super.toJSON();\n\n\t\tdata.points = [];\n\n\t\tfor ( let i = 0, l = this.points.length; i < l; i ++ ) {\n\n\t\t\tconst point = this.points[ i ];\n\t\t\tdata.points.push( point.toArray() );\n\n\t\t}\n\n\t\treturn data;\n\n\t}\n\n\tfromJSON( json ) {\n\n\t\tsuper.fromJSON( json );\n\n\t\tthis.points = [];\n\n\t\tfor ( let i = 0, l = json.points.length; i < l; i ++ ) {\n\n\t\t\tconst point = json.points[ i ];\n\t\t\tthis.points.push( new Vector2().fromArray( point ) );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n}\n\nvar Curves = /*#__PURE__*/Object.freeze({\n\t__proto__: null,\n\tArcCurve: ArcCurve,\n\tCatmullRomCurve3: CatmullRomCurve3,\n\tCubicBezierCurve: CubicBezierCurve,\n\tCubicBezierCurve3: CubicBezierCurve3,\n\tEllipseCurve: EllipseCurve,\n\tLineCurve: LineCurve,\n\tLineCurve3: LineCurve3,\n\tQuadraticBezierCurve: QuadraticBezierCurve,\n\tQuadraticBezierCurve3: QuadraticBezierCurve3,\n\tSplineCurve: SplineCurve\n});\n\n/**************************************************************\n *\tCurved Path - a curve path is simply a array of connected\n * curves, but retains the api of a curve\n **************************************************************/\n\nclass CurvePath extends Curve {\n\n\tconstructor() {\n\n\t\tsuper();\n\n\t\tthis.type = 'CurvePath';\n\n\t\tthis.curves = [];\n\t\tthis.autoClose = false; // Automatically closes the path\n\n\t}\n\n\tadd( curve ) {\n\n\t\tthis.curves.push( curve );\n\n\t}\n\n\tclosePath() {\n\n\t\t// Add a line curve if start and end of lines are not connected\n\t\tconst startPoint = this.curves[ 0 ].getPoint( 0 );\n\t\tconst endPoint = this.curves[ this.curves.length - 1 ].getPoint( 1 );\n\n\t\tif ( ! startPoint.equals( endPoint ) ) {\n\n\t\t\tconst lineType = ( startPoint.isVector2 === true ) ? 'LineCurve' : 'LineCurve3';\n\t\t\tthis.curves.push( new Curves[ lineType ]( endPoint, startPoint ) );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\t// To get accurate point with reference to\n\t// entire path distance at time t,\n\t// following has to be done:\n\n\t// 1. Length of each sub path have to be known\n\t// 2. Locate and identify type of curve\n\t// 3. Get t for the curve\n\t// 4. Return curve.getPointAt(t')\n\n\tgetPoint( t, optionalTarget ) {\n\n\t\tconst d = t * this.getLength();\n\t\tconst curveLengths = this.getCurveLengths();\n\t\tlet i = 0;\n\n\t\t// To think about boundaries points.\n\n\t\twhile ( i < curveLengths.length ) {\n\n\t\t\tif ( curveLengths[ i ] >= d ) {\n\n\t\t\t\tconst diff = curveLengths[ i ] - d;\n\t\t\t\tconst curve = this.curves[ i ];\n\n\t\t\t\tconst segmentLength = curve.getLength();\n\t\t\t\tconst u = segmentLength === 0 ? 0 : 1 - diff / segmentLength;\n\n\t\t\t\treturn curve.getPointAt( u, optionalTarget );\n\n\t\t\t}\n\n\t\t\ti ++;\n\n\t\t}\n\n\t\treturn null;\n\n\t\t// loop where sum != 0, sum > d , sum+1 1 && ! points[ points.length - 1 ].equals( points[ 0 ] ) ) {\n\n\t\t\tpoints.push( points[ 0 ] );\n\n\t\t}\n\n\t\treturn points;\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.curves = [];\n\n\t\tfor ( let i = 0, l = source.curves.length; i < l; i ++ ) {\n\n\t\t\tconst curve = source.curves[ i ];\n\n\t\t\tthis.curves.push( curve.clone() );\n\n\t\t}\n\n\t\tthis.autoClose = source.autoClose;\n\n\t\treturn this;\n\n\t}\n\n\ttoJSON() {\n\n\t\tconst data = super.toJSON();\n\n\t\tdata.autoClose = this.autoClose;\n\t\tdata.curves = [];\n\n\t\tfor ( let i = 0, l = this.curves.length; i < l; i ++ ) {\n\n\t\t\tconst curve = this.curves[ i ];\n\t\t\tdata.curves.push( curve.toJSON() );\n\n\t\t}\n\n\t\treturn data;\n\n\t}\n\n\tfromJSON( json ) {\n\n\t\tsuper.fromJSON( json );\n\n\t\tthis.autoClose = json.autoClose;\n\t\tthis.curves = [];\n\n\t\tfor ( let i = 0, l = json.curves.length; i < l; i ++ ) {\n\n\t\t\tconst curve = json.curves[ i ];\n\t\t\tthis.curves.push( new Curves[ curve.type ]().fromJSON( curve ) );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n}\n\nclass Path extends CurvePath {\n\n\tconstructor( points ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'Path';\n\n\t\tthis.currentPoint = new Vector2();\n\n\t\tif ( points ) {\n\n\t\t\tthis.setFromPoints( points );\n\n\t\t}\n\n\t}\n\n\tsetFromPoints( points ) {\n\n\t\tthis.moveTo( points[ 0 ].x, points[ 0 ].y );\n\n\t\tfor ( let i = 1, l = points.length; i < l; i ++ ) {\n\n\t\t\tthis.lineTo( points[ i ].x, points[ i ].y );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tmoveTo( x, y ) {\n\n\t\tthis.currentPoint.set( x, y ); // TODO consider referencing vectors instead of copying?\n\n\t\treturn this;\n\n\t}\n\n\tlineTo( x, y ) {\n\n\t\tconst curve = new LineCurve( this.currentPoint.clone(), new Vector2( x, y ) );\n\t\tthis.curves.push( curve );\n\n\t\tthis.currentPoint.set( x, y );\n\n\t\treturn this;\n\n\t}\n\n\tquadraticCurveTo( aCPx, aCPy, aX, aY ) {\n\n\t\tconst curve = new QuadraticBezierCurve(\n\t\t\tthis.currentPoint.clone(),\n\t\t\tnew Vector2( aCPx, aCPy ),\n\t\t\tnew Vector2( aX, aY )\n\t\t);\n\n\t\tthis.curves.push( curve );\n\n\t\tthis.currentPoint.set( aX, aY );\n\n\t\treturn this;\n\n\t}\n\n\tbezierCurveTo( aCP1x, aCP1y, aCP2x, aCP2y, aX, aY ) {\n\n\t\tconst curve = new CubicBezierCurve(\n\t\t\tthis.currentPoint.clone(),\n\t\t\tnew Vector2( aCP1x, aCP1y ),\n\t\t\tnew Vector2( aCP2x, aCP2y ),\n\t\t\tnew Vector2( aX, aY )\n\t\t);\n\n\t\tthis.curves.push( curve );\n\n\t\tthis.currentPoint.set( aX, aY );\n\n\t\treturn this;\n\n\t}\n\n\tsplineThru( pts /*Array of Vector*/ ) {\n\n\t\tconst npts = [ this.currentPoint.clone() ].concat( pts );\n\n\t\tconst curve = new SplineCurve( npts );\n\t\tthis.curves.push( curve );\n\n\t\tthis.currentPoint.copy( pts[ pts.length - 1 ] );\n\n\t\treturn this;\n\n\t}\n\n\tarc( aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise ) {\n\n\t\tconst x0 = this.currentPoint.x;\n\t\tconst y0 = this.currentPoint.y;\n\n\t\tthis.absarc( aX + x0, aY + y0, aRadius,\n\t\t\taStartAngle, aEndAngle, aClockwise );\n\n\t\treturn this;\n\n\t}\n\n\tabsarc( aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise ) {\n\n\t\tthis.absellipse( aX, aY, aRadius, aRadius, aStartAngle, aEndAngle, aClockwise );\n\n\t\treturn this;\n\n\t}\n\n\tellipse( aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation ) {\n\n\t\tconst x0 = this.currentPoint.x;\n\t\tconst y0 = this.currentPoint.y;\n\n\t\tthis.absellipse( aX + x0, aY + y0, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation );\n\n\t\treturn this;\n\n\t}\n\n\tabsellipse( aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation ) {\n\n\t\tconst curve = new EllipseCurve( aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation );\n\n\t\tif ( this.curves.length > 0 ) {\n\n\t\t\t// if a previous curve is present, attempt to join\n\t\t\tconst firstPoint = curve.getPoint( 0 );\n\n\t\t\tif ( ! firstPoint.equals( this.currentPoint ) ) {\n\n\t\t\t\tthis.lineTo( firstPoint.x, firstPoint.y );\n\n\t\t\t}\n\n\t\t}\n\n\t\tthis.curves.push( curve );\n\n\t\tconst lastPoint = curve.getPoint( 1 );\n\t\tthis.currentPoint.copy( lastPoint );\n\n\t\treturn this;\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.currentPoint.copy( source.currentPoint );\n\n\t\treturn this;\n\n\t}\n\n\ttoJSON() {\n\n\t\tconst data = super.toJSON();\n\n\t\tdata.currentPoint = this.currentPoint.toArray();\n\n\t\treturn data;\n\n\t}\n\n\tfromJSON( json ) {\n\n\t\tsuper.fromJSON( json );\n\n\t\tthis.currentPoint.fromArray( json.currentPoint );\n\n\t\treturn this;\n\n\t}\n\n}\n\nclass LatheGeometry extends BufferGeometry {\n\n\tconstructor( points = [ new Vector2( 0, - 0.5 ), new Vector2( 0.5, 0 ), new Vector2( 0, 0.5 ) ], segments = 12, phiStart = 0, phiLength = Math.PI * 2 ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'LatheGeometry';\n\n\t\tthis.parameters = {\n\t\t\tpoints: points,\n\t\t\tsegments: segments,\n\t\t\tphiStart: phiStart,\n\t\t\tphiLength: phiLength\n\t\t};\n\n\t\tsegments = Math.floor( segments );\n\n\t\t// clamp phiLength so it's in range of [ 0, 2PI ]\n\n\t\tphiLength = clamp( phiLength, 0, Math.PI * 2 );\n\n\t\t// buffers\n\n\t\tconst indices = [];\n\t\tconst vertices = [];\n\t\tconst uvs = [];\n\t\tconst initNormals = [];\n\t\tconst normals = [];\n\n\t\t// helper variables\n\n\t\tconst inverseSegments = 1.0 / segments;\n\t\tconst vertex = new Vector3();\n\t\tconst uv = new Vector2();\n\t\tconst normal = new Vector3();\n\t\tconst curNormal = new Vector3();\n\t\tconst prevNormal = new Vector3();\n\t\tlet dx = 0;\n\t\tlet dy = 0;\n\n\t\t// pre-compute normals for initial \"meridian\"\n\n\t\tfor ( let j = 0; j <= ( points.length - 1 ); j ++ ) {\n\n\t\t\tswitch ( j ) {\n\n\t\t\t\tcase 0:\t\t\t\t// special handling for 1st vertex on path\n\n\t\t\t\t\tdx = points[ j + 1 ].x - points[ j ].x;\n\t\t\t\t\tdy = points[ j + 1 ].y - points[ j ].y;\n\n\t\t\t\t\tnormal.x = dy * 1.0;\n\t\t\t\t\tnormal.y = - dx;\n\t\t\t\t\tnormal.z = dy * 0.0;\n\n\t\t\t\t\tprevNormal.copy( normal );\n\n\t\t\t\t\tnormal.normalize();\n\n\t\t\t\t\tinitNormals.push( normal.x, normal.y, normal.z );\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase ( points.length - 1 ):\t// special handling for last Vertex on path\n\n\t\t\t\t\tinitNormals.push( prevNormal.x, prevNormal.y, prevNormal.z );\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tdefault:\t\t\t// default handling for all vertices in between\n\n\t\t\t\t\tdx = points[ j + 1 ].x - points[ j ].x;\n\t\t\t\t\tdy = points[ j + 1 ].y - points[ j ].y;\n\n\t\t\t\t\tnormal.x = dy * 1.0;\n\t\t\t\t\tnormal.y = - dx;\n\t\t\t\t\tnormal.z = dy * 0.0;\n\n\t\t\t\t\tcurNormal.copy( normal );\n\n\t\t\t\t\tnormal.x += prevNormal.x;\n\t\t\t\t\tnormal.y += prevNormal.y;\n\t\t\t\t\tnormal.z += prevNormal.z;\n\n\t\t\t\t\tnormal.normalize();\n\n\t\t\t\t\tinitNormals.push( normal.x, normal.y, normal.z );\n\n\t\t\t\t\tprevNormal.copy( curNormal );\n\n\t\t\t}\n\n\t\t}\n\n\t\t// generate vertices, uvs and normals\n\n\t\tfor ( let i = 0; i <= segments; i ++ ) {\n\n\t\t\tconst phi = phiStart + i * inverseSegments * phiLength;\n\n\t\t\tconst sin = Math.sin( phi );\n\t\t\tconst cos = Math.cos( phi );\n\n\t\t\tfor ( let j = 0; j <= ( points.length - 1 ); j ++ ) {\n\n\t\t\t\t// vertex\n\n\t\t\t\tvertex.x = points[ j ].x * sin;\n\t\t\t\tvertex.y = points[ j ].y;\n\t\t\t\tvertex.z = points[ j ].x * cos;\n\n\t\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t\t\t// uv\n\n\t\t\t\tuv.x = i / segments;\n\t\t\t\tuv.y = j / ( points.length - 1 );\n\n\t\t\t\tuvs.push( uv.x, uv.y );\n\n\t\t\t\t// normal\n\n\t\t\t\tconst x = initNormals[ 3 * j + 0 ] * sin;\n\t\t\t\tconst y = initNormals[ 3 * j + 1 ];\n\t\t\t\tconst z = initNormals[ 3 * j + 0 ] * cos;\n\n\t\t\t\tnormals.push( x, y, z );\n\n\t\t\t}\n\n\t\t}\n\n\t\t// indices\n\n\t\tfor ( let i = 0; i < segments; i ++ ) {\n\n\t\t\tfor ( let j = 0; j < ( points.length - 1 ); j ++ ) {\n\n\t\t\t\tconst base = j + i * points.length;\n\n\t\t\t\tconst a = base;\n\t\t\t\tconst b = base + points.length;\n\t\t\t\tconst c = base + points.length + 1;\n\t\t\t\tconst d = base + 1;\n\n\t\t\t\t// faces\n\n\t\t\t\tindices.push( a, b, d );\n\t\t\t\tindices.push( c, d, b );\n\n\t\t\t}\n\n\t\t}\n\n\t\t// build geometry\n\n\t\tthis.setIndex( indices );\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );\n\t\tthis.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.parameters = Object.assign( {}, source.parameters );\n\n\t\treturn this;\n\n\t}\n\n\tstatic fromJSON( data ) {\n\n\t\treturn new LatheGeometry( data.points, data.segments, data.phiStart, data.phiLength );\n\n\t}\n\n}\n\nclass CapsuleGeometry extends LatheGeometry {\n\n\tconstructor( radius = 1, length = 1, capSegments = 4, radialSegments = 8 ) {\n\n\t\tconst path = new Path();\n\t\tpath.absarc( 0, - length / 2, radius, Math.PI * 1.5, 0 );\n\t\tpath.absarc( 0, length / 2, radius, 0, Math.PI * 0.5 );\n\n\t\tsuper( path.getPoints( capSegments ), radialSegments );\n\n\t\tthis.type = 'CapsuleGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\tlength: length,\n\t\t\tcapSegments: capSegments,\n\t\t\tradialSegments: radialSegments,\n\t\t};\n\n\t}\n\n\tstatic fromJSON( data ) {\n\n\t\treturn new CapsuleGeometry( data.radius, data.length, data.capSegments, data.radialSegments );\n\n\t}\n\n}\n\nclass CircleGeometry extends BufferGeometry {\n\n\tconstructor( radius = 1, segments = 32, thetaStart = 0, thetaLength = Math.PI * 2 ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'CircleGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\tsegments: segments,\n\t\t\tthetaStart: thetaStart,\n\t\t\tthetaLength: thetaLength\n\t\t};\n\n\t\tsegments = Math.max( 3, segments );\n\n\t\t// buffers\n\n\t\tconst indices = [];\n\t\tconst vertices = [];\n\t\tconst normals = [];\n\t\tconst uvs = [];\n\n\t\t// helper variables\n\n\t\tconst vertex = new Vector3();\n\t\tconst uv = new Vector2();\n\n\t\t// center point\n\n\t\tvertices.push( 0, 0, 0 );\n\t\tnormals.push( 0, 0, 1 );\n\t\tuvs.push( 0.5, 0.5 );\n\n\t\tfor ( let s = 0, i = 3; s <= segments; s ++, i += 3 ) {\n\n\t\t\tconst segment = thetaStart + s / segments * thetaLength;\n\n\t\t\t// vertex\n\n\t\t\tvertex.x = radius * Math.cos( segment );\n\t\t\tvertex.y = radius * Math.sin( segment );\n\n\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t\t// normal\n\n\t\t\tnormals.push( 0, 0, 1 );\n\n\t\t\t// uvs\n\n\t\t\tuv.x = ( vertices[ i ] / radius + 1 ) / 2;\n\t\t\tuv.y = ( vertices[ i + 1 ] / radius + 1 ) / 2;\n\n\t\t\tuvs.push( uv.x, uv.y );\n\n\t\t}\n\n\t\t// indices\n\n\t\tfor ( let i = 1; i <= segments; i ++ ) {\n\n\t\t\tindices.push( i, i + 1, 0 );\n\n\t\t}\n\n\t\t// build geometry\n\n\t\tthis.setIndex( indices );\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tthis.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.parameters = Object.assign( {}, source.parameters );\n\n\t\treturn this;\n\n\t}\n\n\tstatic fromJSON( data ) {\n\n\t\treturn new CircleGeometry( data.radius, data.segments, data.thetaStart, data.thetaLength );\n\n\t}\n\n}\n\nclass CylinderGeometry extends BufferGeometry {\n\n\tconstructor( radiusTop = 1, radiusBottom = 1, height = 1, radialSegments = 32, heightSegments = 1, openEnded = false, thetaStart = 0, thetaLength = Math.PI * 2 ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'CylinderGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradiusTop: radiusTop,\n\t\t\tradiusBottom: radiusBottom,\n\t\t\theight: height,\n\t\t\tradialSegments: radialSegments,\n\t\t\theightSegments: heightSegments,\n\t\t\topenEnded: openEnded,\n\t\t\tthetaStart: thetaStart,\n\t\t\tthetaLength: thetaLength\n\t\t};\n\n\t\tconst scope = this;\n\n\t\tradialSegments = Math.floor( radialSegments );\n\t\theightSegments = Math.floor( heightSegments );\n\n\t\t// buffers\n\n\t\tconst indices = [];\n\t\tconst vertices = [];\n\t\tconst normals = [];\n\t\tconst uvs = [];\n\n\t\t// helper variables\n\n\t\tlet index = 0;\n\t\tconst indexArray = [];\n\t\tconst halfHeight = height / 2;\n\t\tlet groupStart = 0;\n\n\t\t// generate geometry\n\n\t\tgenerateTorso();\n\n\t\tif ( openEnded === false ) {\n\n\t\t\tif ( radiusTop > 0 ) generateCap( true );\n\t\t\tif ( radiusBottom > 0 ) generateCap( false );\n\n\t\t}\n\n\t\t// build geometry\n\n\t\tthis.setIndex( indices );\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tthis.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );\n\n\t\tfunction generateTorso() {\n\n\t\t\tconst normal = new Vector3();\n\t\t\tconst vertex = new Vector3();\n\n\t\t\tlet groupCount = 0;\n\n\t\t\t// this will be used to calculate the normal\n\t\t\tconst slope = ( radiusBottom - radiusTop ) / height;\n\n\t\t\t// generate vertices, normals and uvs\n\n\t\t\tfor ( let y = 0; y <= heightSegments; y ++ ) {\n\n\t\t\t\tconst indexRow = [];\n\n\t\t\t\tconst v = y / heightSegments;\n\n\t\t\t\t// calculate the radius of the current row\n\n\t\t\t\tconst radius = v * ( radiusBottom - radiusTop ) + radiusTop;\n\n\t\t\t\tfor ( let x = 0; x <= radialSegments; x ++ ) {\n\n\t\t\t\t\tconst u = x / radialSegments;\n\n\t\t\t\t\tconst theta = u * thetaLength + thetaStart;\n\n\t\t\t\t\tconst sinTheta = Math.sin( theta );\n\t\t\t\t\tconst cosTheta = Math.cos( theta );\n\n\t\t\t\t\t// vertex\n\n\t\t\t\t\tvertex.x = radius * sinTheta;\n\t\t\t\t\tvertex.y = - v * height + halfHeight;\n\t\t\t\t\tvertex.z = radius * cosTheta;\n\t\t\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t\t\t\t// normal\n\n\t\t\t\t\tnormal.set( sinTheta, slope, cosTheta ).normalize();\n\t\t\t\t\tnormals.push( normal.x, normal.y, normal.z );\n\n\t\t\t\t\t// uv\n\n\t\t\t\t\tuvs.push( u, 1 - v );\n\n\t\t\t\t\t// save index of vertex in respective row\n\n\t\t\t\t\tindexRow.push( index ++ );\n\n\t\t\t\t}\n\n\t\t\t\t// now save vertices of the row in our index array\n\n\t\t\t\tindexArray.push( indexRow );\n\n\t\t\t}\n\n\t\t\t// generate indices\n\n\t\t\tfor ( let x = 0; x < radialSegments; x ++ ) {\n\n\t\t\t\tfor ( let y = 0; y < heightSegments; y ++ ) {\n\n\t\t\t\t\t// we use the index array to access the correct indices\n\n\t\t\t\t\tconst a = indexArray[ y ][ x ];\n\t\t\t\t\tconst b = indexArray[ y + 1 ][ x ];\n\t\t\t\t\tconst c = indexArray[ y + 1 ][ x + 1 ];\n\t\t\t\t\tconst d = indexArray[ y ][ x + 1 ];\n\n\t\t\t\t\t// faces\n\n\t\t\t\t\tindices.push( a, b, d );\n\t\t\t\t\tindices.push( b, c, d );\n\n\t\t\t\t\t// update group counter\n\n\t\t\t\t\tgroupCount += 6;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// add a group to the geometry. this will ensure multi material support\n\n\t\t\tscope.addGroup( groupStart, groupCount, 0 );\n\n\t\t\t// calculate new start value for groups\n\n\t\t\tgroupStart += groupCount;\n\n\t\t}\n\n\t\tfunction generateCap( top ) {\n\n\t\t\t// save the index of the first center vertex\n\t\t\tconst centerIndexStart = index;\n\n\t\t\tconst uv = new Vector2();\n\t\t\tconst vertex = new Vector3();\n\n\t\t\tlet groupCount = 0;\n\n\t\t\tconst radius = ( top === true ) ? radiusTop : radiusBottom;\n\t\t\tconst sign = ( top === true ) ? 1 : - 1;\n\n\t\t\t// first we generate the center vertex data of the cap.\n\t\t\t// because the geometry needs one set of uvs per face,\n\t\t\t// we must generate a center vertex per face/segment\n\n\t\t\tfor ( let x = 1; x <= radialSegments; x ++ ) {\n\n\t\t\t\t// vertex\n\n\t\t\t\tvertices.push( 0, halfHeight * sign, 0 );\n\n\t\t\t\t// normal\n\n\t\t\t\tnormals.push( 0, sign, 0 );\n\n\t\t\t\t// uv\n\n\t\t\t\tuvs.push( 0.5, 0.5 );\n\n\t\t\t\t// increase index\n\n\t\t\t\tindex ++;\n\n\t\t\t}\n\n\t\t\t// save the index of the last center vertex\n\t\t\tconst centerIndexEnd = index;\n\n\t\t\t// now we generate the surrounding vertices, normals and uvs\n\n\t\t\tfor ( let x = 0; x <= radialSegments; x ++ ) {\n\n\t\t\t\tconst u = x / radialSegments;\n\t\t\t\tconst theta = u * thetaLength + thetaStart;\n\n\t\t\t\tconst cosTheta = Math.cos( theta );\n\t\t\t\tconst sinTheta = Math.sin( theta );\n\n\t\t\t\t// vertex\n\n\t\t\t\tvertex.x = radius * sinTheta;\n\t\t\t\tvertex.y = halfHeight * sign;\n\t\t\t\tvertex.z = radius * cosTheta;\n\t\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t\t\t// normal\n\n\t\t\t\tnormals.push( 0, sign, 0 );\n\n\t\t\t\t// uv\n\n\t\t\t\tuv.x = ( cosTheta * 0.5 ) + 0.5;\n\t\t\t\tuv.y = ( sinTheta * 0.5 * sign ) + 0.5;\n\t\t\t\tuvs.push( uv.x, uv.y );\n\n\t\t\t\t// increase index\n\n\t\t\t\tindex ++;\n\n\t\t\t}\n\n\t\t\t// generate indices\n\n\t\t\tfor ( let x = 0; x < radialSegments; x ++ ) {\n\n\t\t\t\tconst c = centerIndexStart + x;\n\t\t\t\tconst i = centerIndexEnd + x;\n\n\t\t\t\tif ( top === true ) {\n\n\t\t\t\t\t// face top\n\n\t\t\t\t\tindices.push( i, i + 1, c );\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// face bottom\n\n\t\t\t\t\tindices.push( i + 1, i, c );\n\n\t\t\t\t}\n\n\t\t\t\tgroupCount += 3;\n\n\t\t\t}\n\n\t\t\t// add a group to the geometry. this will ensure multi material support\n\n\t\t\tscope.addGroup( groupStart, groupCount, top === true ? 1 : 2 );\n\n\t\t\t// calculate new start value for groups\n\n\t\t\tgroupStart += groupCount;\n\n\t\t}\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.parameters = Object.assign( {}, source.parameters );\n\n\t\treturn this;\n\n\t}\n\n\tstatic fromJSON( data ) {\n\n\t\treturn new CylinderGeometry( data.radiusTop, data.radiusBottom, data.height, data.radialSegments, data.heightSegments, data.openEnded, data.thetaStart, data.thetaLength );\n\n\t}\n\n}\n\nclass ConeGeometry extends CylinderGeometry {\n\n\tconstructor( radius = 1, height = 1, radialSegments = 32, heightSegments = 1, openEnded = false, thetaStart = 0, thetaLength = Math.PI * 2 ) {\n\n\t\tsuper( 0, radius, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength );\n\n\t\tthis.type = 'ConeGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\theight: height,\n\t\t\tradialSegments: radialSegments,\n\t\t\theightSegments: heightSegments,\n\t\t\topenEnded: openEnded,\n\t\t\tthetaStart: thetaStart,\n\t\t\tthetaLength: thetaLength\n\t\t};\n\n\t}\n\n\tstatic fromJSON( data ) {\n\n\t\treturn new ConeGeometry( data.radius, data.height, data.radialSegments, data.heightSegments, data.openEnded, data.thetaStart, data.thetaLength );\n\n\t}\n\n}\n\nclass PolyhedronGeometry extends BufferGeometry {\n\n\tconstructor( vertices = [], indices = [], radius = 1, detail = 0 ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'PolyhedronGeometry';\n\n\t\tthis.parameters = {\n\t\t\tvertices: vertices,\n\t\t\tindices: indices,\n\t\t\tradius: radius,\n\t\t\tdetail: detail\n\t\t};\n\n\t\t// default buffer data\n\n\t\tconst vertexBuffer = [];\n\t\tconst uvBuffer = [];\n\n\t\t// the subdivision creates the vertex buffer data\n\n\t\tsubdivide( detail );\n\n\t\t// all vertices should lie on a conceptual sphere with a given radius\n\n\t\tapplyRadius( radius );\n\n\t\t// finally, create the uv data\n\n\t\tgenerateUVs();\n\n\t\t// build non-indexed geometry\n\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertexBuffer, 3 ) );\n\t\tthis.setAttribute( 'normal', new Float32BufferAttribute( vertexBuffer.slice(), 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvBuffer, 2 ) );\n\n\t\tif ( detail === 0 ) {\n\n\t\t\tthis.computeVertexNormals(); // flat normals\n\n\t\t} else {\n\n\t\t\tthis.normalizeNormals(); // smooth normals\n\n\t\t}\n\n\t\t// helper functions\n\n\t\tfunction subdivide( detail ) {\n\n\t\t\tconst a = new Vector3();\n\t\t\tconst b = new Vector3();\n\t\t\tconst c = new Vector3();\n\n\t\t\t// iterate over all faces and apply a subdivision with the given detail value\n\n\t\t\tfor ( let i = 0; i < indices.length; i += 3 ) {\n\n\t\t\t\t// get the vertices of the face\n\n\t\t\t\tgetVertexByIndex( indices[ i + 0 ], a );\n\t\t\t\tgetVertexByIndex( indices[ i + 1 ], b );\n\t\t\t\tgetVertexByIndex( indices[ i + 2 ], c );\n\n\t\t\t\t// perform subdivision\n\n\t\t\t\tsubdivideFace( a, b, c, detail );\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction subdivideFace( a, b, c, detail ) {\n\n\t\t\tconst cols = detail + 1;\n\n\t\t\t// we use this multidimensional array as a data structure for creating the subdivision\n\n\t\t\tconst v = [];\n\n\t\t\t// construct all of the vertices for this subdivision\n\n\t\t\tfor ( let i = 0; i <= cols; i ++ ) {\n\n\t\t\t\tv[ i ] = [];\n\n\t\t\t\tconst aj = a.clone().lerp( c, i / cols );\n\t\t\t\tconst bj = b.clone().lerp( c, i / cols );\n\n\t\t\t\tconst rows = cols - i;\n\n\t\t\t\tfor ( let j = 0; j <= rows; j ++ ) {\n\n\t\t\t\t\tif ( j === 0 && i === cols ) {\n\n\t\t\t\t\t\tv[ i ][ j ] = aj;\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tv[ i ][ j ] = aj.clone().lerp( bj, j / rows );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// construct all of the faces\n\n\t\t\tfor ( let i = 0; i < cols; i ++ ) {\n\n\t\t\t\tfor ( let j = 0; j < 2 * ( cols - i ) - 1; j ++ ) {\n\n\t\t\t\t\tconst k = Math.floor( j / 2 );\n\n\t\t\t\t\tif ( j % 2 === 0 ) {\n\n\t\t\t\t\t\tpushVertex( v[ i ][ k + 1 ] );\n\t\t\t\t\t\tpushVertex( v[ i + 1 ][ k ] );\n\t\t\t\t\t\tpushVertex( v[ i ][ k ] );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tpushVertex( v[ i ][ k + 1 ] );\n\t\t\t\t\t\tpushVertex( v[ i + 1 ][ k + 1 ] );\n\t\t\t\t\t\tpushVertex( v[ i + 1 ][ k ] );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction applyRadius( radius ) {\n\n\t\t\tconst vertex = new Vector3();\n\n\t\t\t// iterate over the entire buffer and apply the radius to each vertex\n\n\t\t\tfor ( let i = 0; i < vertexBuffer.length; i += 3 ) {\n\n\t\t\t\tvertex.x = vertexBuffer[ i + 0 ];\n\t\t\t\tvertex.y = vertexBuffer[ i + 1 ];\n\t\t\t\tvertex.z = vertexBuffer[ i + 2 ];\n\n\t\t\t\tvertex.normalize().multiplyScalar( radius );\n\n\t\t\t\tvertexBuffer[ i + 0 ] = vertex.x;\n\t\t\t\tvertexBuffer[ i + 1 ] = vertex.y;\n\t\t\t\tvertexBuffer[ i + 2 ] = vertex.z;\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction generateUVs() {\n\n\t\t\tconst vertex = new Vector3();\n\n\t\t\tfor ( let i = 0; i < vertexBuffer.length; i += 3 ) {\n\n\t\t\t\tvertex.x = vertexBuffer[ i + 0 ];\n\t\t\t\tvertex.y = vertexBuffer[ i + 1 ];\n\t\t\t\tvertex.z = vertexBuffer[ i + 2 ];\n\n\t\t\t\tconst u = azimuth( vertex ) / 2 / Math.PI + 0.5;\n\t\t\t\tconst v = inclination( vertex ) / Math.PI + 0.5;\n\t\t\t\tuvBuffer.push( u, 1 - v );\n\n\t\t\t}\n\n\t\t\tcorrectUVs();\n\n\t\t\tcorrectSeam();\n\n\t\t}\n\n\t\tfunction correctSeam() {\n\n\t\t\t// handle case when face straddles the seam, see #3269\n\n\t\t\tfor ( let i = 0; i < uvBuffer.length; i += 6 ) {\n\n\t\t\t\t// uv data of a single face\n\n\t\t\t\tconst x0 = uvBuffer[ i + 0 ];\n\t\t\t\tconst x1 = uvBuffer[ i + 2 ];\n\t\t\t\tconst x2 = uvBuffer[ i + 4 ];\n\n\t\t\t\tconst max = Math.max( x0, x1, x2 );\n\t\t\t\tconst min = Math.min( x0, x1, x2 );\n\n\t\t\t\t// 0.9 is somewhat arbitrary\n\n\t\t\t\tif ( max > 0.9 && min < 0.1 ) {\n\n\t\t\t\t\tif ( x0 < 0.2 ) uvBuffer[ i + 0 ] += 1;\n\t\t\t\t\tif ( x1 < 0.2 ) uvBuffer[ i + 2 ] += 1;\n\t\t\t\t\tif ( x2 < 0.2 ) uvBuffer[ i + 4 ] += 1;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction pushVertex( vertex ) {\n\n\t\t\tvertexBuffer.push( vertex.x, vertex.y, vertex.z );\n\n\t\t}\n\n\t\tfunction getVertexByIndex( index, vertex ) {\n\n\t\t\tconst stride = index * 3;\n\n\t\t\tvertex.x = vertices[ stride + 0 ];\n\t\t\tvertex.y = vertices[ stride + 1 ];\n\t\t\tvertex.z = vertices[ stride + 2 ];\n\n\t\t}\n\n\t\tfunction correctUVs() {\n\n\t\t\tconst a = new Vector3();\n\t\t\tconst b = new Vector3();\n\t\t\tconst c = new Vector3();\n\n\t\t\tconst centroid = new Vector3();\n\n\t\t\tconst uvA = new Vector2();\n\t\t\tconst uvB = new Vector2();\n\t\t\tconst uvC = new Vector2();\n\n\t\t\tfor ( let i = 0, j = 0; i < vertexBuffer.length; i += 9, j += 6 ) {\n\n\t\t\t\ta.set( vertexBuffer[ i + 0 ], vertexBuffer[ i + 1 ], vertexBuffer[ i + 2 ] );\n\t\t\t\tb.set( vertexBuffer[ i + 3 ], vertexBuffer[ i + 4 ], vertexBuffer[ i + 5 ] );\n\t\t\t\tc.set( vertexBuffer[ i + 6 ], vertexBuffer[ i + 7 ], vertexBuffer[ i + 8 ] );\n\n\t\t\t\tuvA.set( uvBuffer[ j + 0 ], uvBuffer[ j + 1 ] );\n\t\t\t\tuvB.set( uvBuffer[ j + 2 ], uvBuffer[ j + 3 ] );\n\t\t\t\tuvC.set( uvBuffer[ j + 4 ], uvBuffer[ j + 5 ] );\n\n\t\t\t\tcentroid.copy( a ).add( b ).add( c ).divideScalar( 3 );\n\n\t\t\t\tconst azi = azimuth( centroid );\n\n\t\t\t\tcorrectUV( uvA, j + 0, a, azi );\n\t\t\t\tcorrectUV( uvB, j + 2, b, azi );\n\t\t\t\tcorrectUV( uvC, j + 4, c, azi );\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction correctUV( uv, stride, vector, azimuth ) {\n\n\t\t\tif ( ( azimuth < 0 ) && ( uv.x === 1 ) ) {\n\n\t\t\t\tuvBuffer[ stride ] = uv.x - 1;\n\n\t\t\t}\n\n\t\t\tif ( ( vector.x === 0 ) && ( vector.z === 0 ) ) {\n\n\t\t\t\tuvBuffer[ stride ] = azimuth / 2 / Math.PI + 0.5;\n\n\t\t\t}\n\n\t\t}\n\n\t\t// Angle around the Y axis, counter-clockwise when looking from above.\n\n\t\tfunction azimuth( vector ) {\n\n\t\t\treturn Math.atan2( vector.z, - vector.x );\n\n\t\t}\n\n\n\t\t// Angle above the XZ plane.\n\n\t\tfunction inclination( vector ) {\n\n\t\t\treturn Math.atan2( - vector.y, Math.sqrt( ( vector.x * vector.x ) + ( vector.z * vector.z ) ) );\n\n\t\t}\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.parameters = Object.assign( {}, source.parameters );\n\n\t\treturn this;\n\n\t}\n\n\tstatic fromJSON( data ) {\n\n\t\treturn new PolyhedronGeometry( data.vertices, data.indices, data.radius, data.details );\n\n\t}\n\n}\n\nclass DodecahedronGeometry extends PolyhedronGeometry {\n\n\tconstructor( radius = 1, detail = 0 ) {\n\n\t\tconst t = ( 1 + Math.sqrt( 5 ) ) / 2;\n\t\tconst r = 1 / t;\n\n\t\tconst vertices = [\n\n\t\t\t// (±1, ±1, ±1)\n\t\t\t- 1, - 1, - 1,\t- 1, - 1, 1,\n\t\t\t- 1, 1, - 1, - 1, 1, 1,\n\t\t\t1, - 1, - 1, 1, - 1, 1,\n\t\t\t1, 1, - 1, 1, 1, 1,\n\n\t\t\t// (0, ±1/φ, ±φ)\n\t\t\t0, - r, - t, 0, - r, t,\n\t\t\t0, r, - t, 0, r, t,\n\n\t\t\t// (±1/φ, ±φ, 0)\n\t\t\t- r, - t, 0, - r, t, 0,\n\t\t\tr, - t, 0, r, t, 0,\n\n\t\t\t// (±φ, 0, ±1/φ)\n\t\t\t- t, 0, - r, t, 0, - r,\n\t\t\t- t, 0, r, t, 0, r\n\t\t];\n\n\t\tconst indices = [\n\t\t\t3, 11, 7, \t3, 7, 15, \t3, 15, 13,\n\t\t\t7, 19, 17, \t7, 17, 6, \t7, 6, 15,\n\t\t\t17, 4, 8, \t17, 8, 10, \t17, 10, 6,\n\t\t\t8, 0, 16, \t8, 16, 2, \t8, 2, 10,\n\t\t\t0, 12, 1, \t0, 1, 18, \t0, 18, 16,\n\t\t\t6, 10, 2, \t6, 2, 13, \t6, 13, 15,\n\t\t\t2, 16, 18, \t2, 18, 3, \t2, 3, 13,\n\t\t\t18, 1, 9, \t18, 9, 11, \t18, 11, 3,\n\t\t\t4, 14, 12, \t4, 12, 0, \t4, 0, 8,\n\t\t\t11, 9, 5, \t11, 5, 19, \t11, 19, 7,\n\t\t\t19, 5, 14, \t19, 14, 4, \t19, 4, 17,\n\t\t\t1, 12, 14, \t1, 14, 5, \t1, 5, 9\n\t\t];\n\n\t\tsuper( vertices, indices, radius, detail );\n\n\t\tthis.type = 'DodecahedronGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\tdetail: detail\n\t\t};\n\n\t}\n\n\tstatic fromJSON( data ) {\n\n\t\treturn new DodecahedronGeometry( data.radius, data.detail );\n\n\t}\n\n}\n\nconst _v0 = /*@__PURE__*/ new Vector3();\nconst _v1$1 = /*@__PURE__*/ new Vector3();\nconst _normal = /*@__PURE__*/ new Vector3();\nconst _triangle = /*@__PURE__*/ new Triangle();\n\nclass EdgesGeometry extends BufferGeometry {\n\n\tconstructor( geometry = null, thresholdAngle = 1 ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'EdgesGeometry';\n\n\t\tthis.parameters = {\n\t\t\tgeometry: geometry,\n\t\t\tthresholdAngle: thresholdAngle\n\t\t};\n\n\t\tif ( geometry !== null ) {\n\n\t\t\tconst precisionPoints = 4;\n\t\t\tconst precision = Math.pow( 10, precisionPoints );\n\t\t\tconst thresholdDot = Math.cos( DEG2RAD * thresholdAngle );\n\n\t\t\tconst indexAttr = geometry.getIndex();\n\t\t\tconst positionAttr = geometry.getAttribute( 'position' );\n\t\t\tconst indexCount = indexAttr ? indexAttr.count : positionAttr.count;\n\n\t\t\tconst indexArr = [ 0, 0, 0 ];\n\t\t\tconst vertKeys = [ 'a', 'b', 'c' ];\n\t\t\tconst hashes = new Array( 3 );\n\n\t\t\tconst edgeData = {};\n\t\t\tconst vertices = [];\n\t\t\tfor ( let i = 0; i < indexCount; i += 3 ) {\n\n\t\t\t\tif ( indexAttr ) {\n\n\t\t\t\t\tindexArr[ 0 ] = indexAttr.getX( i );\n\t\t\t\t\tindexArr[ 1 ] = indexAttr.getX( i + 1 );\n\t\t\t\t\tindexArr[ 2 ] = indexAttr.getX( i + 2 );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tindexArr[ 0 ] = i;\n\t\t\t\t\tindexArr[ 1 ] = i + 1;\n\t\t\t\t\tindexArr[ 2 ] = i + 2;\n\n\t\t\t\t}\n\n\t\t\t\tconst { a, b, c } = _triangle;\n\t\t\t\ta.fromBufferAttribute( positionAttr, indexArr[ 0 ] );\n\t\t\t\tb.fromBufferAttribute( positionAttr, indexArr[ 1 ] );\n\t\t\t\tc.fromBufferAttribute( positionAttr, indexArr[ 2 ] );\n\t\t\t\t_triangle.getNormal( _normal );\n\n\t\t\t\t// create hashes for the edge from the vertices\n\t\t\t\thashes[ 0 ] = `${ Math.round( a.x * precision ) },${ Math.round( a.y * precision ) },${ Math.round( a.z * precision ) }`;\n\t\t\t\thashes[ 1 ] = `${ Math.round( b.x * precision ) },${ Math.round( b.y * precision ) },${ Math.round( b.z * precision ) }`;\n\t\t\t\thashes[ 2 ] = `${ Math.round( c.x * precision ) },${ Math.round( c.y * precision ) },${ Math.round( c.z * precision ) }`;\n\n\t\t\t\t// skip degenerate triangles\n\t\t\t\tif ( hashes[ 0 ] === hashes[ 1 ] || hashes[ 1 ] === hashes[ 2 ] || hashes[ 2 ] === hashes[ 0 ] ) {\n\n\t\t\t\t\tcontinue;\n\n\t\t\t\t}\n\n\t\t\t\t// iterate over every edge\n\t\t\t\tfor ( let j = 0; j < 3; j ++ ) {\n\n\t\t\t\t\t// get the first and next vertex making up the edge\n\t\t\t\t\tconst jNext = ( j + 1 ) % 3;\n\t\t\t\t\tconst vecHash0 = hashes[ j ];\n\t\t\t\t\tconst vecHash1 = hashes[ jNext ];\n\t\t\t\t\tconst v0 = _triangle[ vertKeys[ j ] ];\n\t\t\t\t\tconst v1 = _triangle[ vertKeys[ jNext ] ];\n\n\t\t\t\t\tconst hash = `${ vecHash0 }_${ vecHash1 }`;\n\t\t\t\t\tconst reverseHash = `${ vecHash1 }_${ vecHash0 }`;\n\n\t\t\t\t\tif ( reverseHash in edgeData && edgeData[ reverseHash ] ) {\n\n\t\t\t\t\t\t// if we found a sibling edge add it into the vertex array if\n\t\t\t\t\t\t// it meets the angle threshold and delete the edge from the map.\n\t\t\t\t\t\tif ( _normal.dot( edgeData[ reverseHash ].normal ) <= thresholdDot ) {\n\n\t\t\t\t\t\t\tvertices.push( v0.x, v0.y, v0.z );\n\t\t\t\t\t\t\tvertices.push( v1.x, v1.y, v1.z );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tedgeData[ reverseHash ] = null;\n\n\t\t\t\t\t} else if ( ! ( hash in edgeData ) ) {\n\n\t\t\t\t\t\t// if we've already got an edge here then skip adding a new one\n\t\t\t\t\t\tedgeData[ hash ] = {\n\n\t\t\t\t\t\t\tindex0: indexArr[ j ],\n\t\t\t\t\t\t\tindex1: indexArr[ jNext ],\n\t\t\t\t\t\t\tnormal: _normal.clone(),\n\n\t\t\t\t\t\t};\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// iterate over all remaining, unmatched edges and add them to the vertex array\n\t\t\tfor ( const key in edgeData ) {\n\n\t\t\t\tif ( edgeData[ key ] ) {\n\n\t\t\t\t\tconst { index0, index1 } = edgeData[ key ];\n\t\t\t\t\t_v0.fromBufferAttribute( positionAttr, index0 );\n\t\t\t\t\t_v1$1.fromBufferAttribute( positionAttr, index1 );\n\n\t\t\t\t\tvertices.push( _v0.x, _v0.y, _v0.z );\n\t\t\t\t\tvertices.push( _v1$1.x, _v1$1.y, _v1$1.z );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\n\t\t}\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.parameters = Object.assign( {}, source.parameters );\n\n\t\treturn this;\n\n\t}\n\n}\n\nclass Shape extends Path {\n\n\tconstructor( points ) {\n\n\t\tsuper( points );\n\n\t\tthis.uuid = generateUUID();\n\n\t\tthis.type = 'Shape';\n\n\t\tthis.holes = [];\n\n\t}\n\n\tgetPointsHoles( divisions ) {\n\n\t\tconst holesPts = [];\n\n\t\tfor ( let i = 0, l = this.holes.length; i < l; i ++ ) {\n\n\t\t\tholesPts[ i ] = this.holes[ i ].getPoints( divisions );\n\n\t\t}\n\n\t\treturn holesPts;\n\n\t}\n\n\t// get points of shape and holes (keypoints based on segments parameter)\n\n\textractPoints( divisions ) {\n\n\t\treturn {\n\n\t\t\tshape: this.getPoints( divisions ),\n\t\t\tholes: this.getPointsHoles( divisions )\n\n\t\t};\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.holes = [];\n\n\t\tfor ( let i = 0, l = source.holes.length; i < l; i ++ ) {\n\n\t\t\tconst hole = source.holes[ i ];\n\n\t\t\tthis.holes.push( hole.clone() );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\ttoJSON() {\n\n\t\tconst data = super.toJSON();\n\n\t\tdata.uuid = this.uuid;\n\t\tdata.holes = [];\n\n\t\tfor ( let i = 0, l = this.holes.length; i < l; i ++ ) {\n\n\t\t\tconst hole = this.holes[ i ];\n\t\t\tdata.holes.push( hole.toJSON() );\n\n\t\t}\n\n\t\treturn data;\n\n\t}\n\n\tfromJSON( json ) {\n\n\t\tsuper.fromJSON( json );\n\n\t\tthis.uuid = json.uuid;\n\t\tthis.holes = [];\n\n\t\tfor ( let i = 0, l = json.holes.length; i < l; i ++ ) {\n\n\t\t\tconst hole = json.holes[ i ];\n\t\t\tthis.holes.push( new Path().fromJSON( hole ) );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n}\n\n/**\n * Port from https://github.com/mapbox/earcut (v2.2.4)\n */\n\nconst Earcut = {\n\n\ttriangulate: function ( data, holeIndices, dim = 2 ) {\n\n\t\tconst hasHoles = holeIndices && holeIndices.length;\n\t\tconst outerLen = hasHoles ? holeIndices[ 0 ] * dim : data.length;\n\t\tlet outerNode = linkedList( data, 0, outerLen, dim, true );\n\t\tconst triangles = [];\n\n\t\tif ( ! outerNode || outerNode.next === outerNode.prev ) return triangles;\n\n\t\tlet minX, minY, maxX, maxY, x, y, invSize;\n\n\t\tif ( hasHoles ) outerNode = eliminateHoles( data, holeIndices, outerNode, dim );\n\n\t\t// if the shape is not too simple, we'll use z-order curve hash later; calculate polygon bbox\n\t\tif ( data.length > 80 * dim ) {\n\n\t\t\tminX = maxX = data[ 0 ];\n\t\t\tminY = maxY = data[ 1 ];\n\n\t\t\tfor ( let i = dim; i < outerLen; i += dim ) {\n\n\t\t\t\tx = data[ i ];\n\t\t\t\ty = data[ i + 1 ];\n\t\t\t\tif ( x < minX ) minX = x;\n\t\t\t\tif ( y < minY ) minY = y;\n\t\t\t\tif ( x > maxX ) maxX = x;\n\t\t\t\tif ( y > maxY ) maxY = y;\n\n\t\t\t}\n\n\t\t\t// minX, minY and invSize are later used to transform coords into integers for z-order calculation\n\t\t\tinvSize = Math.max( maxX - minX, maxY - minY );\n\t\t\tinvSize = invSize !== 0 ? 32767 / invSize : 0;\n\n\t\t}\n\n\t\tearcutLinked( outerNode, triangles, dim, minX, minY, invSize, 0 );\n\n\t\treturn triangles;\n\n\t}\n\n};\n\n// create a circular doubly linked list from polygon points in the specified winding order\nfunction linkedList( data, start, end, dim, clockwise ) {\n\n\tlet i, last;\n\n\tif ( clockwise === ( signedArea( data, start, end, dim ) > 0 ) ) {\n\n\t\tfor ( i = start; i < end; i += dim ) last = insertNode( i, data[ i ], data[ i + 1 ], last );\n\n\t} else {\n\n\t\tfor ( i = end - dim; i >= start; i -= dim ) last = insertNode( i, data[ i ], data[ i + 1 ], last );\n\n\t}\n\n\tif ( last && equals( last, last.next ) ) {\n\n\t\tremoveNode( last );\n\t\tlast = last.next;\n\n\t}\n\n\treturn last;\n\n}\n\n// eliminate colinear or duplicate points\nfunction filterPoints( start, end ) {\n\n\tif ( ! start ) return start;\n\tif ( ! end ) end = start;\n\n\tlet p = start,\n\t\tagain;\n\tdo {\n\n\t\tagain = false;\n\n\t\tif ( ! p.steiner && ( equals( p, p.next ) || area( p.prev, p, p.next ) === 0 ) ) {\n\n\t\t\tremoveNode( p );\n\t\t\tp = end = p.prev;\n\t\t\tif ( p === p.next ) break;\n\t\t\tagain = true;\n\n\t\t} else {\n\n\t\t\tp = p.next;\n\n\t\t}\n\n\t} while ( again || p !== end );\n\n\treturn end;\n\n}\n\n// main ear slicing loop which triangulates a polygon (given as a linked list)\nfunction earcutLinked( ear, triangles, dim, minX, minY, invSize, pass ) {\n\n\tif ( ! ear ) return;\n\n\t// interlink polygon nodes in z-order\n\tif ( ! pass && invSize ) indexCurve( ear, minX, minY, invSize );\n\n\tlet stop = ear,\n\t\tprev, next;\n\n\t// iterate through ears, slicing them one by one\n\twhile ( ear.prev !== ear.next ) {\n\n\t\tprev = ear.prev;\n\t\tnext = ear.next;\n\n\t\tif ( invSize ? isEarHashed( ear, minX, minY, invSize ) : isEar( ear ) ) {\n\n\t\t\t// cut off the triangle\n\t\t\ttriangles.push( prev.i / dim | 0 );\n\t\t\ttriangles.push( ear.i / dim | 0 );\n\t\t\ttriangles.push( next.i / dim | 0 );\n\n\t\t\tremoveNode( ear );\n\n\t\t\t// skipping the next vertex leads to less sliver triangles\n\t\t\tear = next.next;\n\t\t\tstop = next.next;\n\n\t\t\tcontinue;\n\n\t\t}\n\n\t\tear = next;\n\n\t\t// if we looped through the whole remaining polygon and can't find any more ears\n\t\tif ( ear === stop ) {\n\n\t\t\t// try filtering points and slicing again\n\t\t\tif ( ! pass ) {\n\n\t\t\t\tearcutLinked( filterPoints( ear ), triangles, dim, minX, minY, invSize, 1 );\n\n\t\t\t\t// if this didn't work, try curing all small self-intersections locally\n\n\t\t\t} else if ( pass === 1 ) {\n\n\t\t\t\tear = cureLocalIntersections( filterPoints( ear ), triangles, dim );\n\t\t\t\tearcutLinked( ear, triangles, dim, minX, minY, invSize, 2 );\n\n\t\t\t\t// as a last resort, try splitting the remaining polygon into two\n\n\t\t\t} else if ( pass === 2 ) {\n\n\t\t\t\tsplitEarcut( ear, triangles, dim, minX, minY, invSize );\n\n\t\t\t}\n\n\t\t\tbreak;\n\n\t\t}\n\n\t}\n\n}\n\n// check whether a polygon node forms a valid ear with adjacent nodes\nfunction isEar( ear ) {\n\n\tconst a = ear.prev,\n\t\tb = ear,\n\t\tc = ear.next;\n\n\tif ( area( a, b, c ) >= 0 ) return false; // reflex, can't be an ear\n\n\t// now make sure we don't have other points inside the potential ear\n\tconst ax = a.x, bx = b.x, cx = c.x, ay = a.y, by = b.y, cy = c.y;\n\n\t// triangle bbox; min & max are calculated like this for speed\n\tconst x0 = ax < bx ? ( ax < cx ? ax : cx ) : ( bx < cx ? bx : cx ),\n\t\ty0 = ay < by ? ( ay < cy ? ay : cy ) : ( by < cy ? by : cy ),\n\t\tx1 = ax > bx ? ( ax > cx ? ax : cx ) : ( bx > cx ? bx : cx ),\n\t\ty1 = ay > by ? ( ay > cy ? ay : cy ) : ( by > cy ? by : cy );\n\n\tlet p = c.next;\n\twhile ( p !== a ) {\n\n\t\tif ( p.x >= x0 && p.x <= x1 && p.y >= y0 && p.y <= y1 &&\n\t\t\tpointInTriangle( ax, ay, bx, by, cx, cy, p.x, p.y ) &&\n\t\t\tarea( p.prev, p, p.next ) >= 0 ) return false;\n\t\tp = p.next;\n\n\t}\n\n\treturn true;\n\n}\n\nfunction isEarHashed( ear, minX, minY, invSize ) {\n\n\tconst a = ear.prev,\n\t\tb = ear,\n\t\tc = ear.next;\n\n\tif ( area( a, b, c ) >= 0 ) return false; // reflex, can't be an ear\n\n\tconst ax = a.x, bx = b.x, cx = c.x, ay = a.y, by = b.y, cy = c.y;\n\n\t// triangle bbox; min & max are calculated like this for speed\n\tconst x0 = ax < bx ? ( ax < cx ? ax : cx ) : ( bx < cx ? bx : cx ),\n\t\ty0 = ay < by ? ( ay < cy ? ay : cy ) : ( by < cy ? by : cy ),\n\t\tx1 = ax > bx ? ( ax > cx ? ax : cx ) : ( bx > cx ? bx : cx ),\n\t\ty1 = ay > by ? ( ay > cy ? ay : cy ) : ( by > cy ? by : cy );\n\n\t// z-order range for the current triangle bbox;\n\tconst minZ = zOrder( x0, y0, minX, minY, invSize ),\n\t\tmaxZ = zOrder( x1, y1, minX, minY, invSize );\n\n\tlet p = ear.prevZ,\n\t\tn = ear.nextZ;\n\n\t// look for points inside the triangle in both directions\n\twhile ( p && p.z >= minZ && n && n.z <= maxZ ) {\n\n\t\tif ( p.x >= x0 && p.x <= x1 && p.y >= y0 && p.y <= y1 && p !== a && p !== c &&\n\t\t\tpointInTriangle( ax, ay, bx, by, cx, cy, p.x, p.y ) && area( p.prev, p, p.next ) >= 0 ) return false;\n\t\tp = p.prevZ;\n\n\t\tif ( n.x >= x0 && n.x <= x1 && n.y >= y0 && n.y <= y1 && n !== a && n !== c &&\n\t\t\tpointInTriangle( ax, ay, bx, by, cx, cy, n.x, n.y ) && area( n.prev, n, n.next ) >= 0 ) return false;\n\t\tn = n.nextZ;\n\n\t}\n\n\t// look for remaining points in decreasing z-order\n\twhile ( p && p.z >= minZ ) {\n\n\t\tif ( p.x >= x0 && p.x <= x1 && p.y >= y0 && p.y <= y1 && p !== a && p !== c &&\n\t\t\tpointInTriangle( ax, ay, bx, by, cx, cy, p.x, p.y ) && area( p.prev, p, p.next ) >= 0 ) return false;\n\t\tp = p.prevZ;\n\n\t}\n\n\t// look for remaining points in increasing z-order\n\twhile ( n && n.z <= maxZ ) {\n\n\t\tif ( n.x >= x0 && n.x <= x1 && n.y >= y0 && n.y <= y1 && n !== a && n !== c &&\n\t\t\tpointInTriangle( ax, ay, bx, by, cx, cy, n.x, n.y ) && area( n.prev, n, n.next ) >= 0 ) return false;\n\t\tn = n.nextZ;\n\n\t}\n\n\treturn true;\n\n}\n\n// go through all polygon nodes and cure small local self-intersections\nfunction cureLocalIntersections( start, triangles, dim ) {\n\n\tlet p = start;\n\tdo {\n\n\t\tconst a = p.prev,\n\t\t\tb = p.next.next;\n\n\t\tif ( ! equals( a, b ) && intersects( a, p, p.next, b ) && locallyInside( a, b ) && locallyInside( b, a ) ) {\n\n\t\t\ttriangles.push( a.i / dim | 0 );\n\t\t\ttriangles.push( p.i / dim | 0 );\n\t\t\ttriangles.push( b.i / dim | 0 );\n\n\t\t\t// remove two nodes involved\n\t\t\tremoveNode( p );\n\t\t\tremoveNode( p.next );\n\n\t\t\tp = start = b;\n\n\t\t}\n\n\t\tp = p.next;\n\n\t} while ( p !== start );\n\n\treturn filterPoints( p );\n\n}\n\n// try splitting polygon into two and triangulate them independently\nfunction splitEarcut( start, triangles, dim, minX, minY, invSize ) {\n\n\t// look for a valid diagonal that divides the polygon into two\n\tlet a = start;\n\tdo {\n\n\t\tlet b = a.next.next;\n\t\twhile ( b !== a.prev ) {\n\n\t\t\tif ( a.i !== b.i && isValidDiagonal( a, b ) ) {\n\n\t\t\t\t// split the polygon in two by the diagonal\n\t\t\t\tlet c = splitPolygon( a, b );\n\n\t\t\t\t// filter colinear points around the cuts\n\t\t\t\ta = filterPoints( a, a.next );\n\t\t\t\tc = filterPoints( c, c.next );\n\n\t\t\t\t// run earcut on each half\n\t\t\t\tearcutLinked( a, triangles, dim, minX, minY, invSize, 0 );\n\t\t\t\tearcutLinked( c, triangles, dim, minX, minY, invSize, 0 );\n\t\t\t\treturn;\n\n\t\t\t}\n\n\t\t\tb = b.next;\n\n\t\t}\n\n\t\ta = a.next;\n\n\t} while ( a !== start );\n\n}\n\n// link every hole into the outer loop, producing a single-ring polygon without holes\nfunction eliminateHoles( data, holeIndices, outerNode, dim ) {\n\n\tconst queue = [];\n\tlet i, len, start, end, list;\n\n\tfor ( i = 0, len = holeIndices.length; i < len; i ++ ) {\n\n\t\tstart = holeIndices[ i ] * dim;\n\t\tend = i < len - 1 ? holeIndices[ i + 1 ] * dim : data.length;\n\t\tlist = linkedList( data, start, end, dim, false );\n\t\tif ( list === list.next ) list.steiner = true;\n\t\tqueue.push( getLeftmost( list ) );\n\n\t}\n\n\tqueue.sort( compareX );\n\n\t// process holes from left to right\n\tfor ( i = 0; i < queue.length; i ++ ) {\n\n\t\touterNode = eliminateHole( queue[ i ], outerNode );\n\n\t}\n\n\treturn outerNode;\n\n}\n\nfunction compareX( a, b ) {\n\n\treturn a.x - b.x;\n\n}\n\n// find a bridge between vertices that connects hole with an outer ring and link it\nfunction eliminateHole( hole, outerNode ) {\n\n\tconst bridge = findHoleBridge( hole, outerNode );\n\tif ( ! bridge ) {\n\n\t\treturn outerNode;\n\n\t}\n\n\tconst bridgeReverse = splitPolygon( bridge, hole );\n\n\t// filter collinear points around the cuts\n\tfilterPoints( bridgeReverse, bridgeReverse.next );\n\treturn filterPoints( bridge, bridge.next );\n\n}\n\n// David Eberly's algorithm for finding a bridge between hole and outer polygon\nfunction findHoleBridge( hole, outerNode ) {\n\n\tlet p = outerNode,\n\t\tqx = - Infinity,\n\t\tm;\n\n\tconst hx = hole.x, hy = hole.y;\n\n\t// find a segment intersected by a ray from the hole's leftmost point to the left;\n\t// segment's endpoint with lesser x will be potential connection point\n\tdo {\n\n\t\tif ( hy <= p.y && hy >= p.next.y && p.next.y !== p.y ) {\n\n\t\t\tconst x = p.x + ( hy - p.y ) * ( p.next.x - p.x ) / ( p.next.y - p.y );\n\t\t\tif ( x <= hx && x > qx ) {\n\n\t\t\t\tqx = x;\n\t\t\t\tm = p.x < p.next.x ? p : p.next;\n\t\t\t\tif ( x === hx ) return m; // hole touches outer segment; pick leftmost endpoint\n\n\t\t\t}\n\n\t\t}\n\n\t\tp = p.next;\n\n\t} while ( p !== outerNode );\n\n\tif ( ! m ) return null;\n\n\t// look for points inside the triangle of hole point, segment intersection and endpoint;\n\t// if there are no points found, we have a valid connection;\n\t// otherwise choose the point of the minimum angle with the ray as connection point\n\n\tconst stop = m,\n\t\tmx = m.x,\n\t\tmy = m.y;\n\tlet tanMin = Infinity, tan;\n\n\tp = m;\n\n\tdo {\n\n\t\tif ( hx >= p.x && p.x >= mx && hx !== p.x &&\n\t\t\t\tpointInTriangle( hy < my ? hx : qx, hy, mx, my, hy < my ? qx : hx, hy, p.x, p.y ) ) {\n\n\t\t\ttan = Math.abs( hy - p.y ) / ( hx - p.x ); // tangential\n\n\t\t\tif ( locallyInside( p, hole ) && ( tan < tanMin || ( tan === tanMin && ( p.x > m.x || ( p.x === m.x && sectorContainsSector( m, p ) ) ) ) ) ) {\n\n\t\t\t\tm = p;\n\t\t\t\ttanMin = tan;\n\n\t\t\t}\n\n\t\t}\n\n\t\tp = p.next;\n\n\t} while ( p !== stop );\n\n\treturn m;\n\n}\n\n// whether sector in vertex m contains sector in vertex p in the same coordinates\nfunction sectorContainsSector( m, p ) {\n\n\treturn area( m.prev, m, p.prev ) < 0 && area( p.next, m, m.next ) < 0;\n\n}\n\n// interlink polygon nodes in z-order\nfunction indexCurve( start, minX, minY, invSize ) {\n\n\tlet p = start;\n\tdo {\n\n\t\tif ( p.z === 0 ) p.z = zOrder( p.x, p.y, minX, minY, invSize );\n\t\tp.prevZ = p.prev;\n\t\tp.nextZ = p.next;\n\t\tp = p.next;\n\n\t} while ( p !== start );\n\n\tp.prevZ.nextZ = null;\n\tp.prevZ = null;\n\n\tsortLinked( p );\n\n}\n\n// Simon Tatham's linked list merge sort algorithm\n// http://www.chiark.greenend.org.uk/~sgtatham/algorithms/listsort.html\nfunction sortLinked( list ) {\n\n\tlet i, p, q, e, tail, numMerges, pSize, qSize,\n\t\tinSize = 1;\n\n\tdo {\n\n\t\tp = list;\n\t\tlist = null;\n\t\ttail = null;\n\t\tnumMerges = 0;\n\n\t\twhile ( p ) {\n\n\t\t\tnumMerges ++;\n\t\t\tq = p;\n\t\t\tpSize = 0;\n\t\t\tfor ( i = 0; i < inSize; i ++ ) {\n\n\t\t\t\tpSize ++;\n\t\t\t\tq = q.nextZ;\n\t\t\t\tif ( ! q ) break;\n\n\t\t\t}\n\n\t\t\tqSize = inSize;\n\n\t\t\twhile ( pSize > 0 || ( qSize > 0 && q ) ) {\n\n\t\t\t\tif ( pSize !== 0 && ( qSize === 0 || ! q || p.z <= q.z ) ) {\n\n\t\t\t\t\te = p;\n\t\t\t\t\tp = p.nextZ;\n\t\t\t\t\tpSize --;\n\n\t\t\t\t} else {\n\n\t\t\t\t\te = q;\n\t\t\t\t\tq = q.nextZ;\n\t\t\t\t\tqSize --;\n\n\t\t\t\t}\n\n\t\t\t\tif ( tail ) tail.nextZ = e;\n\t\t\t\telse list = e;\n\n\t\t\t\te.prevZ = tail;\n\t\t\t\ttail = e;\n\n\t\t\t}\n\n\t\t\tp = q;\n\n\t\t}\n\n\t\ttail.nextZ = null;\n\t\tinSize *= 2;\n\n\t} while ( numMerges > 1 );\n\n\treturn list;\n\n}\n\n// z-order of a point given coords and inverse of the longer side of data bbox\nfunction zOrder( x, y, minX, minY, invSize ) {\n\n\t// coords are transformed into non-negative 15-bit integer range\n\tx = ( x - minX ) * invSize | 0;\n\ty = ( y - minY ) * invSize | 0;\n\n\tx = ( x | ( x << 8 ) ) & 0x00FF00FF;\n\tx = ( x | ( x << 4 ) ) & 0x0F0F0F0F;\n\tx = ( x | ( x << 2 ) ) & 0x33333333;\n\tx = ( x | ( x << 1 ) ) & 0x55555555;\n\n\ty = ( y | ( y << 8 ) ) & 0x00FF00FF;\n\ty = ( y | ( y << 4 ) ) & 0x0F0F0F0F;\n\ty = ( y | ( y << 2 ) ) & 0x33333333;\n\ty = ( y | ( y << 1 ) ) & 0x55555555;\n\n\treturn x | ( y << 1 );\n\n}\n\n// find the leftmost node of a polygon ring\nfunction getLeftmost( start ) {\n\n\tlet p = start,\n\t\tleftmost = start;\n\tdo {\n\n\t\tif ( p.x < leftmost.x || ( p.x === leftmost.x && p.y < leftmost.y ) ) leftmost = p;\n\t\tp = p.next;\n\n\t} while ( p !== start );\n\n\treturn leftmost;\n\n}\n\n// check if a point lies within a convex triangle\nfunction pointInTriangle( ax, ay, bx, by, cx, cy, px, py ) {\n\n\treturn ( cx - px ) * ( ay - py ) >= ( ax - px ) * ( cy - py ) &&\n ( ax - px ) * ( by - py ) >= ( bx - px ) * ( ay - py ) &&\n ( bx - px ) * ( cy - py ) >= ( cx - px ) * ( by - py );\n\n}\n\n// check if a diagonal between two polygon nodes is valid (lies in polygon interior)\nfunction isValidDiagonal( a, b ) {\n\n\treturn a.next.i !== b.i && a.prev.i !== b.i && ! intersectsPolygon( a, b ) && // dones't intersect other edges\n ( locallyInside( a, b ) && locallyInside( b, a ) && middleInside( a, b ) && // locally visible\n ( area( a.prev, a, b.prev ) || area( a, b.prev, b ) ) || // does not create opposite-facing sectors\n equals( a, b ) && area( a.prev, a, a.next ) > 0 && area( b.prev, b, b.next ) > 0 ); // special zero-length case\n\n}\n\n// signed area of a triangle\nfunction area( p, q, r ) {\n\n\treturn ( q.y - p.y ) * ( r.x - q.x ) - ( q.x - p.x ) * ( r.y - q.y );\n\n}\n\n// check if two points are equal\nfunction equals( p1, p2 ) {\n\n\treturn p1.x === p2.x && p1.y === p2.y;\n\n}\n\n// check if two segments intersect\nfunction intersects( p1, q1, p2, q2 ) {\n\n\tconst o1 = sign( area( p1, q1, p2 ) );\n\tconst o2 = sign( area( p1, q1, q2 ) );\n\tconst o3 = sign( area( p2, q2, p1 ) );\n\tconst o4 = sign( area( p2, q2, q1 ) );\n\n\tif ( o1 !== o2 && o3 !== o4 ) return true; // general case\n\n\tif ( o1 === 0 && onSegment( p1, p2, q1 ) ) return true; // p1, q1 and p2 are collinear and p2 lies on p1q1\n\tif ( o2 === 0 && onSegment( p1, q2, q1 ) ) return true; // p1, q1 and q2 are collinear and q2 lies on p1q1\n\tif ( o3 === 0 && onSegment( p2, p1, q2 ) ) return true; // p2, q2 and p1 are collinear and p1 lies on p2q2\n\tif ( o4 === 0 && onSegment( p2, q1, q2 ) ) return true; // p2, q2 and q1 are collinear and q1 lies on p2q2\n\n\treturn false;\n\n}\n\n// for collinear points p, q, r, check if point q lies on segment pr\nfunction onSegment( p, q, r ) {\n\n\treturn q.x <= Math.max( p.x, r.x ) && q.x >= Math.min( p.x, r.x ) && q.y <= Math.max( p.y, r.y ) && q.y >= Math.min( p.y, r.y );\n\n}\n\nfunction sign( num ) {\n\n\treturn num > 0 ? 1 : num < 0 ? - 1 : 0;\n\n}\n\n// check if a polygon diagonal intersects any polygon segments\nfunction intersectsPolygon( a, b ) {\n\n\tlet p = a;\n\tdo {\n\n\t\tif ( p.i !== a.i && p.next.i !== a.i && p.i !== b.i && p.next.i !== b.i &&\n\t\t\tintersects( p, p.next, a, b ) ) return true;\n\t\tp = p.next;\n\n\t} while ( p !== a );\n\n\treturn false;\n\n}\n\n// check if a polygon diagonal is locally inside the polygon\nfunction locallyInside( a, b ) {\n\n\treturn area( a.prev, a, a.next ) < 0 ?\n\t\tarea( a, b, a.next ) >= 0 && area( a, a.prev, b ) >= 0 :\n\t\tarea( a, b, a.prev ) < 0 || area( a, a.next, b ) < 0;\n\n}\n\n// check if the middle point of a polygon diagonal is inside the polygon\nfunction middleInside( a, b ) {\n\n\tlet p = a,\n\t\tinside = false;\n\tconst px = ( a.x + b.x ) / 2,\n\t\tpy = ( a.y + b.y ) / 2;\n\tdo {\n\n\t\tif ( ( ( p.y > py ) !== ( p.next.y > py ) ) && p.next.y !== p.y &&\n\t\t\t( px < ( p.next.x - p.x ) * ( py - p.y ) / ( p.next.y - p.y ) + p.x ) )\n\t\t\tinside = ! inside;\n\t\tp = p.next;\n\n\t} while ( p !== a );\n\n\treturn inside;\n\n}\n\n// link two polygon vertices with a bridge; if the vertices belong to the same ring, it splits polygon into two;\n// if one belongs to the outer ring and another to a hole, it merges it into a single ring\nfunction splitPolygon( a, b ) {\n\n\tconst a2 = new Node( a.i, a.x, a.y ),\n\t\tb2 = new Node( b.i, b.x, b.y ),\n\t\tan = a.next,\n\t\tbp = b.prev;\n\n\ta.next = b;\n\tb.prev = a;\n\n\ta2.next = an;\n\tan.prev = a2;\n\n\tb2.next = a2;\n\ta2.prev = b2;\n\n\tbp.next = b2;\n\tb2.prev = bp;\n\n\treturn b2;\n\n}\n\n// create a node and optionally link it with previous one (in a circular doubly linked list)\nfunction insertNode( i, x, y, last ) {\n\n\tconst p = new Node( i, x, y );\n\n\tif ( ! last ) {\n\n\t\tp.prev = p;\n\t\tp.next = p;\n\n\t} else {\n\n\t\tp.next = last.next;\n\t\tp.prev = last;\n\t\tlast.next.prev = p;\n\t\tlast.next = p;\n\n\t}\n\n\treturn p;\n\n}\n\nfunction removeNode( p ) {\n\n\tp.next.prev = p.prev;\n\tp.prev.next = p.next;\n\n\tif ( p.prevZ ) p.prevZ.nextZ = p.nextZ;\n\tif ( p.nextZ ) p.nextZ.prevZ = p.prevZ;\n\n}\n\nfunction Node( i, x, y ) {\n\n\t// vertex index in coordinates array\n\tthis.i = i;\n\n\t// vertex coordinates\n\tthis.x = x;\n\tthis.y = y;\n\n\t// previous and next vertex nodes in a polygon ring\n\tthis.prev = null;\n\tthis.next = null;\n\n\t// z-order curve value\n\tthis.z = 0;\n\n\t// previous and next nodes in z-order\n\tthis.prevZ = null;\n\tthis.nextZ = null;\n\n\t// indicates whether this is a steiner point\n\tthis.steiner = false;\n\n}\n\nfunction signedArea( data, start, end, dim ) {\n\n\tlet sum = 0;\n\tfor ( let i = start, j = end - dim; i < end; i += dim ) {\n\n\t\tsum += ( data[ j ] - data[ i ] ) * ( data[ i + 1 ] + data[ j + 1 ] );\n\t\tj = i;\n\n\t}\n\n\treturn sum;\n\n}\n\nclass ShapeUtils {\n\n\t// calculate area of the contour polygon\n\n\tstatic area( contour ) {\n\n\t\tconst n = contour.length;\n\t\tlet a = 0.0;\n\n\t\tfor ( let p = n - 1, q = 0; q < n; p = q ++ ) {\n\n\t\t\ta += contour[ p ].x * contour[ q ].y - contour[ q ].x * contour[ p ].y;\n\n\t\t}\n\n\t\treturn a * 0.5;\n\n\t}\n\n\tstatic isClockWise( pts ) {\n\n\t\treturn ShapeUtils.area( pts ) < 0;\n\n\t}\n\n\tstatic triangulateShape( contour, holes ) {\n\n\t\tconst vertices = []; // flat array of vertices like [ x0,y0, x1,y1, x2,y2, ... ]\n\t\tconst holeIndices = []; // array of hole indices\n\t\tconst faces = []; // final array of vertex indices like [ [ a,b,d ], [ b,c,d ] ]\n\n\t\tremoveDupEndPts( contour );\n\t\taddContour( vertices, contour );\n\n\t\t//\n\n\t\tlet holeIndex = contour.length;\n\n\t\tholes.forEach( removeDupEndPts );\n\n\t\tfor ( let i = 0; i < holes.length; i ++ ) {\n\n\t\t\tholeIndices.push( holeIndex );\n\t\t\tholeIndex += holes[ i ].length;\n\t\t\taddContour( vertices, holes[ i ] );\n\n\t\t}\n\n\t\t//\n\n\t\tconst triangles = Earcut.triangulate( vertices, holeIndices );\n\n\t\t//\n\n\t\tfor ( let i = 0; i < triangles.length; i += 3 ) {\n\n\t\t\tfaces.push( triangles.slice( i, i + 3 ) );\n\n\t\t}\n\n\t\treturn faces;\n\n\t}\n\n}\n\nfunction removeDupEndPts( points ) {\n\n\tconst l = points.length;\n\n\tif ( l > 2 && points[ l - 1 ].equals( points[ 0 ] ) ) {\n\n\t\tpoints.pop();\n\n\t}\n\n}\n\nfunction addContour( vertices, contour ) {\n\n\tfor ( let i = 0; i < contour.length; i ++ ) {\n\n\t\tvertices.push( contour[ i ].x );\n\t\tvertices.push( contour[ i ].y );\n\n\t}\n\n}\n\n/**\n * Creates extruded geometry from a path shape.\n *\n * parameters = {\n *\n * curveSegments: , // number of points on the curves\n * steps: , // number of points for z-side extrusions / used for subdividing segments of extrude spline too\n * depth: , // Depth to extrude the shape\n *\n * bevelEnabled: , // turn on bevel\n * bevelThickness: , // how deep into the original shape bevel goes\n * bevelSize: , // how far from shape outline (including bevelOffset) is bevel\n * bevelOffset: , // how far from shape outline does bevel start\n * bevelSegments: , // number of bevel layers\n *\n * extrudePath: // curve to extrude shape along\n *\n * UVGenerator: // object that provides UV generator functions\n *\n * }\n */\n\n\nclass ExtrudeGeometry extends BufferGeometry {\n\n\tconstructor( shapes = new Shape( [ new Vector2( 0.5, 0.5 ), new Vector2( - 0.5, 0.5 ), new Vector2( - 0.5, - 0.5 ), new Vector2( 0.5, - 0.5 ) ] ), options = {} ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'ExtrudeGeometry';\n\n\t\tthis.parameters = {\n\t\t\tshapes: shapes,\n\t\t\toptions: options\n\t\t};\n\n\t\tshapes = Array.isArray( shapes ) ? shapes : [ shapes ];\n\n\t\tconst scope = this;\n\n\t\tconst verticesArray = [];\n\t\tconst uvArray = [];\n\n\t\tfor ( let i = 0, l = shapes.length; i < l; i ++ ) {\n\n\t\t\tconst shape = shapes[ i ];\n\t\t\taddShape( shape );\n\n\t\t}\n\n\t\t// build geometry\n\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( verticesArray, 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvArray, 2 ) );\n\n\t\tthis.computeVertexNormals();\n\n\t\t// functions\n\n\t\tfunction addShape( shape ) {\n\n\t\t\tconst placeholder = [];\n\n\t\t\t// options\n\n\t\t\tconst curveSegments = options.curveSegments !== undefined ? options.curveSegments : 12;\n\t\t\tconst steps = options.steps !== undefined ? options.steps : 1;\n\t\t\tconst depth = options.depth !== undefined ? options.depth : 1;\n\n\t\t\tlet bevelEnabled = options.bevelEnabled !== undefined ? options.bevelEnabled : true;\n\t\t\tlet bevelThickness = options.bevelThickness !== undefined ? options.bevelThickness : 0.2;\n\t\t\tlet bevelSize = options.bevelSize !== undefined ? options.bevelSize : bevelThickness - 0.1;\n\t\t\tlet bevelOffset = options.bevelOffset !== undefined ? options.bevelOffset : 0;\n\t\t\tlet bevelSegments = options.bevelSegments !== undefined ? options.bevelSegments : 3;\n\n\t\t\tconst extrudePath = options.extrudePath;\n\n\t\t\tconst uvgen = options.UVGenerator !== undefined ? options.UVGenerator : WorldUVGenerator;\n\n\t\t\t//\n\n\t\t\tlet extrudePts, extrudeByPath = false;\n\t\t\tlet splineTube, binormal, normal, position2;\n\n\t\t\tif ( extrudePath ) {\n\n\t\t\t\textrudePts = extrudePath.getSpacedPoints( steps );\n\n\t\t\t\textrudeByPath = true;\n\t\t\t\tbevelEnabled = false; // bevels not supported for path extrusion\n\n\t\t\t\t// SETUP TNB variables\n\n\t\t\t\t// TODO1 - have a .isClosed in spline?\n\n\t\t\t\tsplineTube = extrudePath.computeFrenetFrames( steps, false );\n\n\t\t\t\t// console.log(splineTube, 'splineTube', splineTube.normals.length, 'steps', steps, 'extrudePts', extrudePts.length);\n\n\t\t\t\tbinormal = new Vector3();\n\t\t\t\tnormal = new Vector3();\n\t\t\t\tposition2 = new Vector3();\n\n\t\t\t}\n\n\t\t\t// Safeguards if bevels are not enabled\n\n\t\t\tif ( ! bevelEnabled ) {\n\n\t\t\t\tbevelSegments = 0;\n\t\t\t\tbevelThickness = 0;\n\t\t\t\tbevelSize = 0;\n\t\t\t\tbevelOffset = 0;\n\n\t\t\t}\n\n\t\t\t// Variables initialization\n\n\t\t\tconst shapePoints = shape.extractPoints( curveSegments );\n\n\t\t\tlet vertices = shapePoints.shape;\n\t\t\tconst holes = shapePoints.holes;\n\n\t\t\tconst reverse = ! ShapeUtils.isClockWise( vertices );\n\n\t\t\tif ( reverse ) {\n\n\t\t\t\tvertices = vertices.reverse();\n\n\t\t\t\t// Maybe we should also check if holes are in the opposite direction, just to be safe ...\n\n\t\t\t\tfor ( let h = 0, hl = holes.length; h < hl; h ++ ) {\n\n\t\t\t\t\tconst ahole = holes[ h ];\n\n\t\t\t\t\tif ( ShapeUtils.isClockWise( ahole ) ) {\n\n\t\t\t\t\t\tholes[ h ] = ahole.reverse();\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\n\t\t\tconst faces = ShapeUtils.triangulateShape( vertices, holes );\n\n\t\t\t/* Vertices */\n\n\t\t\tconst contour = vertices; // vertices has all points but contour has only points of circumference\n\n\t\t\tfor ( let h = 0, hl = holes.length; h < hl; h ++ ) {\n\n\t\t\t\tconst ahole = holes[ h ];\n\n\t\t\t\tvertices = vertices.concat( ahole );\n\n\t\t\t}\n\n\n\t\t\tfunction scalePt2( pt, vec, size ) {\n\n\t\t\t\tif ( ! vec ) console.error( 'THREE.ExtrudeGeometry: vec does not exist' );\n\n\t\t\t\treturn pt.clone().addScaledVector( vec, size );\n\n\t\t\t}\n\n\t\t\tconst vlen = vertices.length, flen = faces.length;\n\n\n\t\t\t// Find directions for point movement\n\n\n\t\t\tfunction getBevelVec( inPt, inPrev, inNext ) {\n\n\t\t\t\t// computes for inPt the corresponding point inPt' on a new contour\n\t\t\t\t// shifted by 1 unit (length of normalized vector) to the left\n\t\t\t\t// if we walk along contour clockwise, this new contour is outside the old one\n\t\t\t\t//\n\t\t\t\t// inPt' is the intersection of the two lines parallel to the two\n\t\t\t\t// adjacent edges of inPt at a distance of 1 unit on the left side.\n\n\t\t\t\tlet v_trans_x, v_trans_y, shrink_by; // resulting translation vector for inPt\n\n\t\t\t\t// good reading for geometry algorithms (here: line-line intersection)\n\t\t\t\t// http://geomalgorithms.com/a05-_intersect-1.html\n\n\t\t\t\tconst v_prev_x = inPt.x - inPrev.x,\n\t\t\t\t\tv_prev_y = inPt.y - inPrev.y;\n\t\t\t\tconst v_next_x = inNext.x - inPt.x,\n\t\t\t\t\tv_next_y = inNext.y - inPt.y;\n\n\t\t\t\tconst v_prev_lensq = ( v_prev_x * v_prev_x + v_prev_y * v_prev_y );\n\n\t\t\t\t// check for collinear edges\n\t\t\t\tconst collinear0 = ( v_prev_x * v_next_y - v_prev_y * v_next_x );\n\n\t\t\t\tif ( Math.abs( collinear0 ) > Number.EPSILON ) {\n\n\t\t\t\t\t// not collinear\n\n\t\t\t\t\t// length of vectors for normalizing\n\n\t\t\t\t\tconst v_prev_len = Math.sqrt( v_prev_lensq );\n\t\t\t\t\tconst v_next_len = Math.sqrt( v_next_x * v_next_x + v_next_y * v_next_y );\n\n\t\t\t\t\t// shift adjacent points by unit vectors to the left\n\n\t\t\t\t\tconst ptPrevShift_x = ( inPrev.x - v_prev_y / v_prev_len );\n\t\t\t\t\tconst ptPrevShift_y = ( inPrev.y + v_prev_x / v_prev_len );\n\n\t\t\t\t\tconst ptNextShift_x = ( inNext.x - v_next_y / v_next_len );\n\t\t\t\t\tconst ptNextShift_y = ( inNext.y + v_next_x / v_next_len );\n\n\t\t\t\t\t// scaling factor for v_prev to intersection point\n\n\t\t\t\t\tconst sf = ( ( ptNextShift_x - ptPrevShift_x ) * v_next_y -\n\t\t\t\t\t\t\t( ptNextShift_y - ptPrevShift_y ) * v_next_x ) /\n\t\t\t\t\t\t( v_prev_x * v_next_y - v_prev_y * v_next_x );\n\n\t\t\t\t\t// vector from inPt to intersection point\n\n\t\t\t\t\tv_trans_x = ( ptPrevShift_x + v_prev_x * sf - inPt.x );\n\t\t\t\t\tv_trans_y = ( ptPrevShift_y + v_prev_y * sf - inPt.y );\n\n\t\t\t\t\t// Don't normalize!, otherwise sharp corners become ugly\n\t\t\t\t\t// but prevent crazy spikes\n\t\t\t\t\tconst v_trans_lensq = ( v_trans_x * v_trans_x + v_trans_y * v_trans_y );\n\t\t\t\t\tif ( v_trans_lensq <= 2 ) {\n\n\t\t\t\t\t\treturn new Vector2( v_trans_x, v_trans_y );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tshrink_by = Math.sqrt( v_trans_lensq / 2 );\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// handle special case of collinear edges\n\n\t\t\t\t\tlet direction_eq = false; // assumes: opposite\n\n\t\t\t\t\tif ( v_prev_x > Number.EPSILON ) {\n\n\t\t\t\t\t\tif ( v_next_x > Number.EPSILON ) {\n\n\t\t\t\t\t\t\tdirection_eq = true;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tif ( v_prev_x < - Number.EPSILON ) {\n\n\t\t\t\t\t\t\tif ( v_next_x < - Number.EPSILON ) {\n\n\t\t\t\t\t\t\t\tdirection_eq = true;\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\tif ( Math.sign( v_prev_y ) === Math.sign( v_next_y ) ) {\n\n\t\t\t\t\t\t\t\tdirection_eq = true;\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( direction_eq ) {\n\n\t\t\t\t\t\t// console.log(\"Warning: lines are a straight sequence\");\n\t\t\t\t\t\tv_trans_x = - v_prev_y;\n\t\t\t\t\t\tv_trans_y = v_prev_x;\n\t\t\t\t\t\tshrink_by = Math.sqrt( v_prev_lensq );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\t// console.log(\"Warning: lines are a straight spike\");\n\t\t\t\t\t\tv_trans_x = v_prev_x;\n\t\t\t\t\t\tv_trans_y = v_prev_y;\n\t\t\t\t\t\tshrink_by = Math.sqrt( v_prev_lensq / 2 );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\treturn new Vector2( v_trans_x / shrink_by, v_trans_y / shrink_by );\n\n\t\t\t}\n\n\n\t\t\tconst contourMovements = [];\n\n\t\t\tfor ( let i = 0, il = contour.length, j = il - 1, k = i + 1; i < il; i ++, j ++, k ++ ) {\n\n\t\t\t\tif ( j === il ) j = 0;\n\t\t\t\tif ( k === il ) k = 0;\n\n\t\t\t\t// (j)---(i)---(k)\n\t\t\t\t// console.log('i,j,k', i, j , k)\n\n\t\t\t\tcontourMovements[ i ] = getBevelVec( contour[ i ], contour[ j ], contour[ k ] );\n\n\t\t\t}\n\n\t\t\tconst holesMovements = [];\n\t\t\tlet oneHoleMovements, verticesMovements = contourMovements.concat();\n\n\t\t\tfor ( let h = 0, hl = holes.length; h < hl; h ++ ) {\n\n\t\t\t\tconst ahole = holes[ h ];\n\n\t\t\t\toneHoleMovements = [];\n\n\t\t\t\tfor ( let i = 0, il = ahole.length, j = il - 1, k = i + 1; i < il; i ++, j ++, k ++ ) {\n\n\t\t\t\t\tif ( j === il ) j = 0;\n\t\t\t\t\tif ( k === il ) k = 0;\n\n\t\t\t\t\t// (j)---(i)---(k)\n\t\t\t\t\toneHoleMovements[ i ] = getBevelVec( ahole[ i ], ahole[ j ], ahole[ k ] );\n\n\t\t\t\t}\n\n\t\t\t\tholesMovements.push( oneHoleMovements );\n\t\t\t\tverticesMovements = verticesMovements.concat( oneHoleMovements );\n\n\t\t\t}\n\n\n\t\t\t// Loop bevelSegments, 1 for the front, 1 for the back\n\n\t\t\tfor ( let b = 0; b < bevelSegments; b ++ ) {\n\n\t\t\t\t//for ( b = bevelSegments; b > 0; b -- ) {\n\n\t\t\t\tconst t = b / bevelSegments;\n\t\t\t\tconst z = bevelThickness * Math.cos( t * Math.PI / 2 );\n\t\t\t\tconst bs = bevelSize * Math.sin( t * Math.PI / 2 ) + bevelOffset;\n\n\t\t\t\t// contract shape\n\n\t\t\t\tfor ( let i = 0, il = contour.length; i < il; i ++ ) {\n\n\t\t\t\t\tconst vert = scalePt2( contour[ i ], contourMovements[ i ], bs );\n\n\t\t\t\t\tv( vert.x, vert.y, - z );\n\n\t\t\t\t}\n\n\t\t\t\t// expand holes\n\n\t\t\t\tfor ( let h = 0, hl = holes.length; h < hl; h ++ ) {\n\n\t\t\t\t\tconst ahole = holes[ h ];\n\t\t\t\t\toneHoleMovements = holesMovements[ h ];\n\n\t\t\t\t\tfor ( let i = 0, il = ahole.length; i < il; i ++ ) {\n\n\t\t\t\t\t\tconst vert = scalePt2( ahole[ i ], oneHoleMovements[ i ], bs );\n\n\t\t\t\t\t\tv( vert.x, vert.y, - z );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tconst bs = bevelSize + bevelOffset;\n\n\t\t\t// Back facing vertices\n\n\t\t\tfor ( let i = 0; i < vlen; i ++ ) {\n\n\t\t\t\tconst vert = bevelEnabled ? scalePt2( vertices[ i ], verticesMovements[ i ], bs ) : vertices[ i ];\n\n\t\t\t\tif ( ! extrudeByPath ) {\n\n\t\t\t\t\tv( vert.x, vert.y, 0 );\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// v( vert.x, vert.y + extrudePts[ 0 ].y, extrudePts[ 0 ].x );\n\n\t\t\t\t\tnormal.copy( splineTube.normals[ 0 ] ).multiplyScalar( vert.x );\n\t\t\t\t\tbinormal.copy( splineTube.binormals[ 0 ] ).multiplyScalar( vert.y );\n\n\t\t\t\t\tposition2.copy( extrudePts[ 0 ] ).add( normal ).add( binormal );\n\n\t\t\t\t\tv( position2.x, position2.y, position2.z );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// Add stepped vertices...\n\t\t\t// Including front facing vertices\n\n\t\t\tfor ( let s = 1; s <= steps; s ++ ) {\n\n\t\t\t\tfor ( let i = 0; i < vlen; i ++ ) {\n\n\t\t\t\t\tconst vert = bevelEnabled ? scalePt2( vertices[ i ], verticesMovements[ i ], bs ) : vertices[ i ];\n\n\t\t\t\t\tif ( ! extrudeByPath ) {\n\n\t\t\t\t\t\tv( vert.x, vert.y, depth / steps * s );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\t// v( vert.x, vert.y + extrudePts[ s - 1 ].y, extrudePts[ s - 1 ].x );\n\n\t\t\t\t\t\tnormal.copy( splineTube.normals[ s ] ).multiplyScalar( vert.x );\n\t\t\t\t\t\tbinormal.copy( splineTube.binormals[ s ] ).multiplyScalar( vert.y );\n\n\t\t\t\t\t\tposition2.copy( extrudePts[ s ] ).add( normal ).add( binormal );\n\n\t\t\t\t\t\tv( position2.x, position2.y, position2.z );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\n\t\t\t// Add bevel segments planes\n\n\t\t\t//for ( b = 1; b <= bevelSegments; b ++ ) {\n\t\t\tfor ( let b = bevelSegments - 1; b >= 0; b -- ) {\n\n\t\t\t\tconst t = b / bevelSegments;\n\t\t\t\tconst z = bevelThickness * Math.cos( t * Math.PI / 2 );\n\t\t\t\tconst bs = bevelSize * Math.sin( t * Math.PI / 2 ) + bevelOffset;\n\n\t\t\t\t// contract shape\n\n\t\t\t\tfor ( let i = 0, il = contour.length; i < il; i ++ ) {\n\n\t\t\t\t\tconst vert = scalePt2( contour[ i ], contourMovements[ i ], bs );\n\t\t\t\t\tv( vert.x, vert.y, depth + z );\n\n\t\t\t\t}\n\n\t\t\t\t// expand holes\n\n\t\t\t\tfor ( let h = 0, hl = holes.length; h < hl; h ++ ) {\n\n\t\t\t\t\tconst ahole = holes[ h ];\n\t\t\t\t\toneHoleMovements = holesMovements[ h ];\n\n\t\t\t\t\tfor ( let i = 0, il = ahole.length; i < il; i ++ ) {\n\n\t\t\t\t\t\tconst vert = scalePt2( ahole[ i ], oneHoleMovements[ i ], bs );\n\n\t\t\t\t\t\tif ( ! extrudeByPath ) {\n\n\t\t\t\t\t\t\tv( vert.x, vert.y, depth + z );\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\tv( vert.x, vert.y + extrudePts[ steps - 1 ].y, extrudePts[ steps - 1 ].x + z );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t/* Faces */\n\n\t\t\t// Top and bottom faces\n\n\t\t\tbuildLidFaces();\n\n\t\t\t// Sides faces\n\n\t\t\tbuildSideFaces();\n\n\n\t\t\t///// Internal functions\n\n\t\t\tfunction buildLidFaces() {\n\n\t\t\t\tconst start = verticesArray.length / 3;\n\n\t\t\t\tif ( bevelEnabled ) {\n\n\t\t\t\t\tlet layer = 0; // steps + 1\n\t\t\t\t\tlet offset = vlen * layer;\n\n\t\t\t\t\t// Bottom faces\n\n\t\t\t\t\tfor ( let i = 0; i < flen; i ++ ) {\n\n\t\t\t\t\t\tconst face = faces[ i ];\n\t\t\t\t\t\tf3( face[ 2 ] + offset, face[ 1 ] + offset, face[ 0 ] + offset );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tlayer = steps + bevelSegments * 2;\n\t\t\t\t\toffset = vlen * layer;\n\n\t\t\t\t\t// Top faces\n\n\t\t\t\t\tfor ( let i = 0; i < flen; i ++ ) {\n\n\t\t\t\t\t\tconst face = faces[ i ];\n\t\t\t\t\t\tf3( face[ 0 ] + offset, face[ 1 ] + offset, face[ 2 ] + offset );\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// Bottom faces\n\n\t\t\t\t\tfor ( let i = 0; i < flen; i ++ ) {\n\n\t\t\t\t\t\tconst face = faces[ i ];\n\t\t\t\t\t\tf3( face[ 2 ], face[ 1 ], face[ 0 ] );\n\n\t\t\t\t\t}\n\n\t\t\t\t\t// Top faces\n\n\t\t\t\t\tfor ( let i = 0; i < flen; i ++ ) {\n\n\t\t\t\t\t\tconst face = faces[ i ];\n\t\t\t\t\t\tf3( face[ 0 ] + vlen * steps, face[ 1 ] + vlen * steps, face[ 2 ] + vlen * steps );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tscope.addGroup( start, verticesArray.length / 3 - start, 0 );\n\n\t\t\t}\n\n\t\t\t// Create faces for the z-sides of the shape\n\n\t\t\tfunction buildSideFaces() {\n\n\t\t\t\tconst start = verticesArray.length / 3;\n\t\t\t\tlet layeroffset = 0;\n\t\t\t\tsidewalls( contour, layeroffset );\n\t\t\t\tlayeroffset += contour.length;\n\n\t\t\t\tfor ( let h = 0, hl = holes.length; h < hl; h ++ ) {\n\n\t\t\t\t\tconst ahole = holes[ h ];\n\t\t\t\t\tsidewalls( ahole, layeroffset );\n\n\t\t\t\t\t//, true\n\t\t\t\t\tlayeroffset += ahole.length;\n\n\t\t\t\t}\n\n\n\t\t\t\tscope.addGroup( start, verticesArray.length / 3 - start, 1 );\n\n\n\t\t\t}\n\n\t\t\tfunction sidewalls( contour, layeroffset ) {\n\n\t\t\t\tlet i = contour.length;\n\n\t\t\t\twhile ( -- i >= 0 ) {\n\n\t\t\t\t\tconst j = i;\n\t\t\t\t\tlet k = i - 1;\n\t\t\t\t\tif ( k < 0 ) k = contour.length - 1;\n\n\t\t\t\t\t//console.log('b', i,j, i-1, k,vertices.length);\n\n\t\t\t\t\tfor ( let s = 0, sl = ( steps + bevelSegments * 2 ); s < sl; s ++ ) {\n\n\t\t\t\t\t\tconst slen1 = vlen * s;\n\t\t\t\t\t\tconst slen2 = vlen * ( s + 1 );\n\n\t\t\t\t\t\tconst a = layeroffset + j + slen1,\n\t\t\t\t\t\t\tb = layeroffset + k + slen1,\n\t\t\t\t\t\t\tc = layeroffset + k + slen2,\n\t\t\t\t\t\t\td = layeroffset + j + slen2;\n\n\t\t\t\t\t\tf4( a, b, c, d );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tfunction v( x, y, z ) {\n\n\t\t\t\tplaceholder.push( x );\n\t\t\t\tplaceholder.push( y );\n\t\t\t\tplaceholder.push( z );\n\n\t\t\t}\n\n\n\t\t\tfunction f3( a, b, c ) {\n\n\t\t\t\taddVertex( a );\n\t\t\t\taddVertex( b );\n\t\t\t\taddVertex( c );\n\n\t\t\t\tconst nextIndex = verticesArray.length / 3;\n\t\t\t\tconst uvs = uvgen.generateTopUV( scope, verticesArray, nextIndex - 3, nextIndex - 2, nextIndex - 1 );\n\n\t\t\t\taddUV( uvs[ 0 ] );\n\t\t\t\taddUV( uvs[ 1 ] );\n\t\t\t\taddUV( uvs[ 2 ] );\n\n\t\t\t}\n\n\t\t\tfunction f4( a, b, c, d ) {\n\n\t\t\t\taddVertex( a );\n\t\t\t\taddVertex( b );\n\t\t\t\taddVertex( d );\n\n\t\t\t\taddVertex( b );\n\t\t\t\taddVertex( c );\n\t\t\t\taddVertex( d );\n\n\n\t\t\t\tconst nextIndex = verticesArray.length / 3;\n\t\t\t\tconst uvs = uvgen.generateSideWallUV( scope, verticesArray, nextIndex - 6, nextIndex - 3, nextIndex - 2, nextIndex - 1 );\n\n\t\t\t\taddUV( uvs[ 0 ] );\n\t\t\t\taddUV( uvs[ 1 ] );\n\t\t\t\taddUV( uvs[ 3 ] );\n\n\t\t\t\taddUV( uvs[ 1 ] );\n\t\t\t\taddUV( uvs[ 2 ] );\n\t\t\t\taddUV( uvs[ 3 ] );\n\n\t\t\t}\n\n\t\t\tfunction addVertex( index ) {\n\n\t\t\t\tverticesArray.push( placeholder[ index * 3 + 0 ] );\n\t\t\t\tverticesArray.push( placeholder[ index * 3 + 1 ] );\n\t\t\t\tverticesArray.push( placeholder[ index * 3 + 2 ] );\n\n\t\t\t}\n\n\n\t\t\tfunction addUV( vector2 ) {\n\n\t\t\t\tuvArray.push( vector2.x );\n\t\t\t\tuvArray.push( vector2.y );\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.parameters = Object.assign( {}, source.parameters );\n\n\t\treturn this;\n\n\t}\n\n\ttoJSON() {\n\n\t\tconst data = super.toJSON();\n\n\t\tconst shapes = this.parameters.shapes;\n\t\tconst options = this.parameters.options;\n\n\t\treturn toJSON$1( shapes, options, data );\n\n\t}\n\n\tstatic fromJSON( data, shapes ) {\n\n\t\tconst geometryShapes = [];\n\n\t\tfor ( let j = 0, jl = data.shapes.length; j < jl; j ++ ) {\n\n\t\t\tconst shape = shapes[ data.shapes[ j ] ];\n\n\t\t\tgeometryShapes.push( shape );\n\n\t\t}\n\n\t\tconst extrudePath = data.options.extrudePath;\n\n\t\tif ( extrudePath !== undefined ) {\n\n\t\t\tdata.options.extrudePath = new Curves[ extrudePath.type ]().fromJSON( extrudePath );\n\n\t\t}\n\n\t\treturn new ExtrudeGeometry( geometryShapes, data.options );\n\n\t}\n\n}\n\nconst WorldUVGenerator = {\n\n\tgenerateTopUV: function ( geometry, vertices, indexA, indexB, indexC ) {\n\n\t\tconst a_x = vertices[ indexA * 3 ];\n\t\tconst a_y = vertices[ indexA * 3 + 1 ];\n\t\tconst b_x = vertices[ indexB * 3 ];\n\t\tconst b_y = vertices[ indexB * 3 + 1 ];\n\t\tconst c_x = vertices[ indexC * 3 ];\n\t\tconst c_y = vertices[ indexC * 3 + 1 ];\n\n\t\treturn [\n\t\t\tnew Vector2( a_x, a_y ),\n\t\t\tnew Vector2( b_x, b_y ),\n\t\t\tnew Vector2( c_x, c_y )\n\t\t];\n\n\t},\n\n\tgenerateSideWallUV: function ( geometry, vertices, indexA, indexB, indexC, indexD ) {\n\n\t\tconst a_x = vertices[ indexA * 3 ];\n\t\tconst a_y = vertices[ indexA * 3 + 1 ];\n\t\tconst a_z = vertices[ indexA * 3 + 2 ];\n\t\tconst b_x = vertices[ indexB * 3 ];\n\t\tconst b_y = vertices[ indexB * 3 + 1 ];\n\t\tconst b_z = vertices[ indexB * 3 + 2 ];\n\t\tconst c_x = vertices[ indexC * 3 ];\n\t\tconst c_y = vertices[ indexC * 3 + 1 ];\n\t\tconst c_z = vertices[ indexC * 3 + 2 ];\n\t\tconst d_x = vertices[ indexD * 3 ];\n\t\tconst d_y = vertices[ indexD * 3 + 1 ];\n\t\tconst d_z = vertices[ indexD * 3 + 2 ];\n\n\t\tif ( Math.abs( a_y - b_y ) < Math.abs( a_x - b_x ) ) {\n\n\t\t\treturn [\n\t\t\t\tnew Vector2( a_x, 1 - a_z ),\n\t\t\t\tnew Vector2( b_x, 1 - b_z ),\n\t\t\t\tnew Vector2( c_x, 1 - c_z ),\n\t\t\t\tnew Vector2( d_x, 1 - d_z )\n\t\t\t];\n\n\t\t} else {\n\n\t\t\treturn [\n\t\t\t\tnew Vector2( a_y, 1 - a_z ),\n\t\t\t\tnew Vector2( b_y, 1 - b_z ),\n\t\t\t\tnew Vector2( c_y, 1 - c_z ),\n\t\t\t\tnew Vector2( d_y, 1 - d_z )\n\t\t\t];\n\n\t\t}\n\n\t}\n\n};\n\nfunction toJSON$1( shapes, options, data ) {\n\n\tdata.shapes = [];\n\n\tif ( Array.isArray( shapes ) ) {\n\n\t\tfor ( let i = 0, l = shapes.length; i < l; i ++ ) {\n\n\t\t\tconst shape = shapes[ i ];\n\n\t\t\tdata.shapes.push( shape.uuid );\n\n\t\t}\n\n\t} else {\n\n\t\tdata.shapes.push( shapes.uuid );\n\n\t}\n\n\tdata.options = Object.assign( {}, options );\n\n\tif ( options.extrudePath !== undefined ) data.options.extrudePath = options.extrudePath.toJSON();\n\n\treturn data;\n\n}\n\nclass IcosahedronGeometry extends PolyhedronGeometry {\n\n\tconstructor( radius = 1, detail = 0 ) {\n\n\t\tconst t = ( 1 + Math.sqrt( 5 ) ) / 2;\n\n\t\tconst vertices = [\n\t\t\t- 1, t, 0, \t1, t, 0, \t- 1, - t, 0, \t1, - t, 0,\n\t\t\t0, - 1, t, \t0, 1, t,\t0, - 1, - t, \t0, 1, - t,\n\t\t\tt, 0, - 1, \tt, 0, 1, \t- t, 0, - 1, \t- t, 0, 1\n\t\t];\n\n\t\tconst indices = [\n\t\t\t0, 11, 5, \t0, 5, 1, \t0, 1, 7, \t0, 7, 10, \t0, 10, 11,\n\t\t\t1, 5, 9, \t5, 11, 4,\t11, 10, 2,\t10, 7, 6,\t7, 1, 8,\n\t\t\t3, 9, 4, \t3, 4, 2,\t3, 2, 6,\t3, 6, 8,\t3, 8, 9,\n\t\t\t4, 9, 5, \t2, 4, 11,\t6, 2, 10,\t8, 6, 7,\t9, 8, 1\n\t\t];\n\n\t\tsuper( vertices, indices, radius, detail );\n\n\t\tthis.type = 'IcosahedronGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\tdetail: detail\n\t\t};\n\n\t}\n\n\tstatic fromJSON( data ) {\n\n\t\treturn new IcosahedronGeometry( data.radius, data.detail );\n\n\t}\n\n}\n\nclass OctahedronGeometry extends PolyhedronGeometry {\n\n\tconstructor( radius = 1, detail = 0 ) {\n\n\t\tconst vertices = [\n\t\t\t1, 0, 0, \t- 1, 0, 0,\t0, 1, 0,\n\t\t\t0, - 1, 0, \t0, 0, 1,\t0, 0, - 1\n\t\t];\n\n\t\tconst indices = [\n\t\t\t0, 2, 4,\t0, 4, 3,\t0, 3, 5,\n\t\t\t0, 5, 2,\t1, 2, 5,\t1, 5, 3,\n\t\t\t1, 3, 4,\t1, 4, 2\n\t\t];\n\n\t\tsuper( vertices, indices, radius, detail );\n\n\t\tthis.type = 'OctahedronGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\tdetail: detail\n\t\t};\n\n\t}\n\n\tstatic fromJSON( data ) {\n\n\t\treturn new OctahedronGeometry( data.radius, data.detail );\n\n\t}\n\n}\n\nclass RingGeometry extends BufferGeometry {\n\n\tconstructor( innerRadius = 0.5, outerRadius = 1, thetaSegments = 32, phiSegments = 1, thetaStart = 0, thetaLength = Math.PI * 2 ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'RingGeometry';\n\n\t\tthis.parameters = {\n\t\t\tinnerRadius: innerRadius,\n\t\t\touterRadius: outerRadius,\n\t\t\tthetaSegments: thetaSegments,\n\t\t\tphiSegments: phiSegments,\n\t\t\tthetaStart: thetaStart,\n\t\t\tthetaLength: thetaLength\n\t\t};\n\n\t\tthetaSegments = Math.max( 3, thetaSegments );\n\t\tphiSegments = Math.max( 1, phiSegments );\n\n\t\t// buffers\n\n\t\tconst indices = [];\n\t\tconst vertices = [];\n\t\tconst normals = [];\n\t\tconst uvs = [];\n\n\t\t// some helper variables\n\n\t\tlet radius = innerRadius;\n\t\tconst radiusStep = ( ( outerRadius - innerRadius ) / phiSegments );\n\t\tconst vertex = new Vector3();\n\t\tconst uv = new Vector2();\n\n\t\t// generate vertices, normals and uvs\n\n\t\tfor ( let j = 0; j <= phiSegments; j ++ ) {\n\n\t\t\tfor ( let i = 0; i <= thetaSegments; i ++ ) {\n\n\t\t\t\t// values are generate from the inside of the ring to the outside\n\n\t\t\t\tconst segment = thetaStart + i / thetaSegments * thetaLength;\n\n\t\t\t\t// vertex\n\n\t\t\t\tvertex.x = radius * Math.cos( segment );\n\t\t\t\tvertex.y = radius * Math.sin( segment );\n\n\t\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t\t\t// normal\n\n\t\t\t\tnormals.push( 0, 0, 1 );\n\n\t\t\t\t// uv\n\n\t\t\t\tuv.x = ( vertex.x / outerRadius + 1 ) / 2;\n\t\t\t\tuv.y = ( vertex.y / outerRadius + 1 ) / 2;\n\n\t\t\t\tuvs.push( uv.x, uv.y );\n\n\t\t\t}\n\n\t\t\t// increase the radius for next row of vertices\n\n\t\t\tradius += radiusStep;\n\n\t\t}\n\n\t\t// indices\n\n\t\tfor ( let j = 0; j < phiSegments; j ++ ) {\n\n\t\t\tconst thetaSegmentLevel = j * ( thetaSegments + 1 );\n\n\t\t\tfor ( let i = 0; i < thetaSegments; i ++ ) {\n\n\t\t\t\tconst segment = i + thetaSegmentLevel;\n\n\t\t\t\tconst a = segment;\n\t\t\t\tconst b = segment + thetaSegments + 1;\n\t\t\t\tconst c = segment + thetaSegments + 2;\n\t\t\t\tconst d = segment + 1;\n\n\t\t\t\t// faces\n\n\t\t\t\tindices.push( a, b, d );\n\t\t\t\tindices.push( b, c, d );\n\n\t\t\t}\n\n\t\t}\n\n\t\t// build geometry\n\n\t\tthis.setIndex( indices );\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tthis.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.parameters = Object.assign( {}, source.parameters );\n\n\t\treturn this;\n\n\t}\n\n\tstatic fromJSON( data ) {\n\n\t\treturn new RingGeometry( data.innerRadius, data.outerRadius, data.thetaSegments, data.phiSegments, data.thetaStart, data.thetaLength );\n\n\t}\n\n}\n\nclass ShapeGeometry extends BufferGeometry {\n\n\tconstructor( shapes = new Shape( [ new Vector2( 0, 0.5 ), new Vector2( - 0.5, - 0.5 ), new Vector2( 0.5, - 0.5 ) ] ), curveSegments = 12 ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'ShapeGeometry';\n\n\t\tthis.parameters = {\n\t\t\tshapes: shapes,\n\t\t\tcurveSegments: curveSegments\n\t\t};\n\n\t\t// buffers\n\n\t\tconst indices = [];\n\t\tconst vertices = [];\n\t\tconst normals = [];\n\t\tconst uvs = [];\n\n\t\t// helper variables\n\n\t\tlet groupStart = 0;\n\t\tlet groupCount = 0;\n\n\t\t// allow single and array values for \"shapes\" parameter\n\n\t\tif ( Array.isArray( shapes ) === false ) {\n\n\t\t\taddShape( shapes );\n\n\t\t} else {\n\n\t\t\tfor ( let i = 0; i < shapes.length; i ++ ) {\n\n\t\t\t\taddShape( shapes[ i ] );\n\n\t\t\t\tthis.addGroup( groupStart, groupCount, i ); // enables MultiMaterial support\n\n\t\t\t\tgroupStart += groupCount;\n\t\t\t\tgroupCount = 0;\n\n\t\t\t}\n\n\t\t}\n\n\t\t// build geometry\n\n\t\tthis.setIndex( indices );\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tthis.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );\n\n\n\t\t// helper functions\n\n\t\tfunction addShape( shape ) {\n\n\t\t\tconst indexOffset = vertices.length / 3;\n\t\t\tconst points = shape.extractPoints( curveSegments );\n\n\t\t\tlet shapeVertices = points.shape;\n\t\t\tconst shapeHoles = points.holes;\n\n\t\t\t// check direction of vertices\n\n\t\t\tif ( ShapeUtils.isClockWise( shapeVertices ) === false ) {\n\n\t\t\t\tshapeVertices = shapeVertices.reverse();\n\n\t\t\t}\n\n\t\t\tfor ( let i = 0, l = shapeHoles.length; i < l; i ++ ) {\n\n\t\t\t\tconst shapeHole = shapeHoles[ i ];\n\n\t\t\t\tif ( ShapeUtils.isClockWise( shapeHole ) === true ) {\n\n\t\t\t\t\tshapeHoles[ i ] = shapeHole.reverse();\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tconst faces = ShapeUtils.triangulateShape( shapeVertices, shapeHoles );\n\n\t\t\t// join vertices of inner and outer paths to a single array\n\n\t\t\tfor ( let i = 0, l = shapeHoles.length; i < l; i ++ ) {\n\n\t\t\t\tconst shapeHole = shapeHoles[ i ];\n\t\t\t\tshapeVertices = shapeVertices.concat( shapeHole );\n\n\t\t\t}\n\n\t\t\t// vertices, normals, uvs\n\n\t\t\tfor ( let i = 0, l = shapeVertices.length; i < l; i ++ ) {\n\n\t\t\t\tconst vertex = shapeVertices[ i ];\n\n\t\t\t\tvertices.push( vertex.x, vertex.y, 0 );\n\t\t\t\tnormals.push( 0, 0, 1 );\n\t\t\t\tuvs.push( vertex.x, vertex.y ); // world uvs\n\n\t\t\t}\n\n\t\t\t// indices\n\n\t\t\tfor ( let i = 0, l = faces.length; i < l; i ++ ) {\n\n\t\t\t\tconst face = faces[ i ];\n\n\t\t\t\tconst a = face[ 0 ] + indexOffset;\n\t\t\t\tconst b = face[ 1 ] + indexOffset;\n\t\t\t\tconst c = face[ 2 ] + indexOffset;\n\n\t\t\t\tindices.push( a, b, c );\n\t\t\t\tgroupCount += 3;\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.parameters = Object.assign( {}, source.parameters );\n\n\t\treturn this;\n\n\t}\n\n\ttoJSON() {\n\n\t\tconst data = super.toJSON();\n\n\t\tconst shapes = this.parameters.shapes;\n\n\t\treturn toJSON( shapes, data );\n\n\t}\n\n\tstatic fromJSON( data, shapes ) {\n\n\t\tconst geometryShapes = [];\n\n\t\tfor ( let j = 0, jl = data.shapes.length; j < jl; j ++ ) {\n\n\t\t\tconst shape = shapes[ data.shapes[ j ] ];\n\n\t\t\tgeometryShapes.push( shape );\n\n\t\t}\n\n\t\treturn new ShapeGeometry( geometryShapes, data.curveSegments );\n\n\t}\n\n}\n\nfunction toJSON( shapes, data ) {\n\n\tdata.shapes = [];\n\n\tif ( Array.isArray( shapes ) ) {\n\n\t\tfor ( let i = 0, l = shapes.length; i < l; i ++ ) {\n\n\t\t\tconst shape = shapes[ i ];\n\n\t\t\tdata.shapes.push( shape.uuid );\n\n\t\t}\n\n\t} else {\n\n\t\tdata.shapes.push( shapes.uuid );\n\n\t}\n\n\treturn data;\n\n}\n\nclass SphereGeometry extends BufferGeometry {\n\n\tconstructor( radius = 1, widthSegments = 32, heightSegments = 16, phiStart = 0, phiLength = Math.PI * 2, thetaStart = 0, thetaLength = Math.PI ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'SphereGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\twidthSegments: widthSegments,\n\t\t\theightSegments: heightSegments,\n\t\t\tphiStart: phiStart,\n\t\t\tphiLength: phiLength,\n\t\t\tthetaStart: thetaStart,\n\t\t\tthetaLength: thetaLength\n\t\t};\n\n\t\twidthSegments = Math.max( 3, Math.floor( widthSegments ) );\n\t\theightSegments = Math.max( 2, Math.floor( heightSegments ) );\n\n\t\tconst thetaEnd = Math.min( thetaStart + thetaLength, Math.PI );\n\n\t\tlet index = 0;\n\t\tconst grid = [];\n\n\t\tconst vertex = new Vector3();\n\t\tconst normal = new Vector3();\n\n\t\t// buffers\n\n\t\tconst indices = [];\n\t\tconst vertices = [];\n\t\tconst normals = [];\n\t\tconst uvs = [];\n\n\t\t// generate vertices, normals and uvs\n\n\t\tfor ( let iy = 0; iy <= heightSegments; iy ++ ) {\n\n\t\t\tconst verticesRow = [];\n\n\t\t\tconst v = iy / heightSegments;\n\n\t\t\t// special case for the poles\n\n\t\t\tlet uOffset = 0;\n\n\t\t\tif ( iy === 0 && thetaStart === 0 ) {\n\n\t\t\t\tuOffset = 0.5 / widthSegments;\n\n\t\t\t} else if ( iy === heightSegments && thetaEnd === Math.PI ) {\n\n\t\t\t\tuOffset = - 0.5 / widthSegments;\n\n\t\t\t}\n\n\t\t\tfor ( let ix = 0; ix <= widthSegments; ix ++ ) {\n\n\t\t\t\tconst u = ix / widthSegments;\n\n\t\t\t\t// vertex\n\n\t\t\t\tvertex.x = - radius * Math.cos( phiStart + u * phiLength ) * Math.sin( thetaStart + v * thetaLength );\n\t\t\t\tvertex.y = radius * Math.cos( thetaStart + v * thetaLength );\n\t\t\t\tvertex.z = radius * Math.sin( phiStart + u * phiLength ) * Math.sin( thetaStart + v * thetaLength );\n\n\t\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t\t\t// normal\n\n\t\t\t\tnormal.copy( vertex ).normalize();\n\t\t\t\tnormals.push( normal.x, normal.y, normal.z );\n\n\t\t\t\t// uv\n\n\t\t\t\tuvs.push( u + uOffset, 1 - v );\n\n\t\t\t\tverticesRow.push( index ++ );\n\n\t\t\t}\n\n\t\t\tgrid.push( verticesRow );\n\n\t\t}\n\n\t\t// indices\n\n\t\tfor ( let iy = 0; iy < heightSegments; iy ++ ) {\n\n\t\t\tfor ( let ix = 0; ix < widthSegments; ix ++ ) {\n\n\t\t\t\tconst a = grid[ iy ][ ix + 1 ];\n\t\t\t\tconst b = grid[ iy ][ ix ];\n\t\t\t\tconst c = grid[ iy + 1 ][ ix ];\n\t\t\t\tconst d = grid[ iy + 1 ][ ix + 1 ];\n\n\t\t\t\tif ( iy !== 0 || thetaStart > 0 ) indices.push( a, b, d );\n\t\t\t\tif ( iy !== heightSegments - 1 || thetaEnd < Math.PI ) indices.push( b, c, d );\n\n\t\t\t}\n\n\t\t}\n\n\t\t// build geometry\n\n\t\tthis.setIndex( indices );\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tthis.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.parameters = Object.assign( {}, source.parameters );\n\n\t\treturn this;\n\n\t}\n\n\tstatic fromJSON( data ) {\n\n\t\treturn new SphereGeometry( data.radius, data.widthSegments, data.heightSegments, data.phiStart, data.phiLength, data.thetaStart, data.thetaLength );\n\n\t}\n\n}\n\nclass TetrahedronGeometry extends PolyhedronGeometry {\n\n\tconstructor( radius = 1, detail = 0 ) {\n\n\t\tconst vertices = [\n\t\t\t1, 1, 1, \t- 1, - 1, 1, \t- 1, 1, - 1, \t1, - 1, - 1\n\t\t];\n\n\t\tconst indices = [\n\t\t\t2, 1, 0, \t0, 3, 2,\t1, 3, 0,\t2, 3, 1\n\t\t];\n\n\t\tsuper( vertices, indices, radius, detail );\n\n\t\tthis.type = 'TetrahedronGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\tdetail: detail\n\t\t};\n\n\t}\n\n\tstatic fromJSON( data ) {\n\n\t\treturn new TetrahedronGeometry( data.radius, data.detail );\n\n\t}\n\n}\n\nclass TorusGeometry extends BufferGeometry {\n\n\tconstructor( radius = 1, tube = 0.4, radialSegments = 12, tubularSegments = 48, arc = Math.PI * 2 ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'TorusGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\ttube: tube,\n\t\t\tradialSegments: radialSegments,\n\t\t\ttubularSegments: tubularSegments,\n\t\t\tarc: arc\n\t\t};\n\n\t\tradialSegments = Math.floor( radialSegments );\n\t\ttubularSegments = Math.floor( tubularSegments );\n\n\t\t// buffers\n\n\t\tconst indices = [];\n\t\tconst vertices = [];\n\t\tconst normals = [];\n\t\tconst uvs = [];\n\n\t\t// helper variables\n\n\t\tconst center = new Vector3();\n\t\tconst vertex = new Vector3();\n\t\tconst normal = new Vector3();\n\n\t\t// generate vertices, normals and uvs\n\n\t\tfor ( let j = 0; j <= radialSegments; j ++ ) {\n\n\t\t\tfor ( let i = 0; i <= tubularSegments; i ++ ) {\n\n\t\t\t\tconst u = i / tubularSegments * arc;\n\t\t\t\tconst v = j / radialSegments * Math.PI * 2;\n\n\t\t\t\t// vertex\n\n\t\t\t\tvertex.x = ( radius + tube * Math.cos( v ) ) * Math.cos( u );\n\t\t\t\tvertex.y = ( radius + tube * Math.cos( v ) ) * Math.sin( u );\n\t\t\t\tvertex.z = tube * Math.sin( v );\n\n\t\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t\t\t// normal\n\n\t\t\t\tcenter.x = radius * Math.cos( u );\n\t\t\t\tcenter.y = radius * Math.sin( u );\n\t\t\t\tnormal.subVectors( vertex, center ).normalize();\n\n\t\t\t\tnormals.push( normal.x, normal.y, normal.z );\n\n\t\t\t\t// uv\n\n\t\t\t\tuvs.push( i / tubularSegments );\n\t\t\t\tuvs.push( j / radialSegments );\n\n\t\t\t}\n\n\t\t}\n\n\t\t// generate indices\n\n\t\tfor ( let j = 1; j <= radialSegments; j ++ ) {\n\n\t\t\tfor ( let i = 1; i <= tubularSegments; i ++ ) {\n\n\t\t\t\t// indices\n\n\t\t\t\tconst a = ( tubularSegments + 1 ) * j + i - 1;\n\t\t\t\tconst b = ( tubularSegments + 1 ) * ( j - 1 ) + i - 1;\n\t\t\t\tconst c = ( tubularSegments + 1 ) * ( j - 1 ) + i;\n\t\t\t\tconst d = ( tubularSegments + 1 ) * j + i;\n\n\t\t\t\t// faces\n\n\t\t\t\tindices.push( a, b, d );\n\t\t\t\tindices.push( b, c, d );\n\n\t\t\t}\n\n\t\t}\n\n\t\t// build geometry\n\n\t\tthis.setIndex( indices );\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tthis.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.parameters = Object.assign( {}, source.parameters );\n\n\t\treturn this;\n\n\t}\n\n\tstatic fromJSON( data ) {\n\n\t\treturn new TorusGeometry( data.radius, data.tube, data.radialSegments, data.tubularSegments, data.arc );\n\n\t}\n\n}\n\nclass TorusKnotGeometry extends BufferGeometry {\n\n\tconstructor( radius = 1, tube = 0.4, tubularSegments = 64, radialSegments = 8, p = 2, q = 3 ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'TorusKnotGeometry';\n\n\t\tthis.parameters = {\n\t\t\tradius: radius,\n\t\t\ttube: tube,\n\t\t\ttubularSegments: tubularSegments,\n\t\t\tradialSegments: radialSegments,\n\t\t\tp: p,\n\t\t\tq: q\n\t\t};\n\n\t\ttubularSegments = Math.floor( tubularSegments );\n\t\tradialSegments = Math.floor( radialSegments );\n\n\t\t// buffers\n\n\t\tconst indices = [];\n\t\tconst vertices = [];\n\t\tconst normals = [];\n\t\tconst uvs = [];\n\n\t\t// helper variables\n\n\t\tconst vertex = new Vector3();\n\t\tconst normal = new Vector3();\n\n\t\tconst P1 = new Vector3();\n\t\tconst P2 = new Vector3();\n\n\t\tconst B = new Vector3();\n\t\tconst T = new Vector3();\n\t\tconst N = new Vector3();\n\n\t\t// generate vertices, normals and uvs\n\n\t\tfor ( let i = 0; i <= tubularSegments; ++ i ) {\n\n\t\t\t// the radian \"u\" is used to calculate the position on the torus curve of the current tubular segment\n\n\t\t\tconst u = i / tubularSegments * p * Math.PI * 2;\n\n\t\t\t// now we calculate two points. P1 is our current position on the curve, P2 is a little farther ahead.\n\t\t\t// these points are used to create a special \"coordinate space\", which is necessary to calculate the correct vertex positions\n\n\t\t\tcalculatePositionOnCurve( u, p, q, radius, P1 );\n\t\t\tcalculatePositionOnCurve( u + 0.01, p, q, radius, P2 );\n\n\t\t\t// calculate orthonormal basis\n\n\t\t\tT.subVectors( P2, P1 );\n\t\t\tN.addVectors( P2, P1 );\n\t\t\tB.crossVectors( T, N );\n\t\t\tN.crossVectors( B, T );\n\n\t\t\t// normalize B, N. T can be ignored, we don't use it\n\n\t\t\tB.normalize();\n\t\t\tN.normalize();\n\n\t\t\tfor ( let j = 0; j <= radialSegments; ++ j ) {\n\n\t\t\t\t// now calculate the vertices. they are nothing more than an extrusion of the torus curve.\n\t\t\t\t// because we extrude a shape in the xy-plane, there is no need to calculate a z-value.\n\n\t\t\t\tconst v = j / radialSegments * Math.PI * 2;\n\t\t\t\tconst cx = - tube * Math.cos( v );\n\t\t\t\tconst cy = tube * Math.sin( v );\n\n\t\t\t\t// now calculate the final vertex position.\n\t\t\t\t// first we orient the extrusion with our basis vectors, then we add it to the current position on the curve\n\n\t\t\t\tvertex.x = P1.x + ( cx * N.x + cy * B.x );\n\t\t\t\tvertex.y = P1.y + ( cx * N.y + cy * B.y );\n\t\t\t\tvertex.z = P1.z + ( cx * N.z + cy * B.z );\n\n\t\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t\t\t// normal (P1 is always the center/origin of the extrusion, thus we can use it to calculate the normal)\n\n\t\t\t\tnormal.subVectors( vertex, P1 ).normalize();\n\n\t\t\t\tnormals.push( normal.x, normal.y, normal.z );\n\n\t\t\t\t// uv\n\n\t\t\t\tuvs.push( i / tubularSegments );\n\t\t\t\tuvs.push( j / radialSegments );\n\n\t\t\t}\n\n\t\t}\n\n\t\t// generate indices\n\n\t\tfor ( let j = 1; j <= tubularSegments; j ++ ) {\n\n\t\t\tfor ( let i = 1; i <= radialSegments; i ++ ) {\n\n\t\t\t\t// indices\n\n\t\t\t\tconst a = ( radialSegments + 1 ) * ( j - 1 ) + ( i - 1 );\n\t\t\t\tconst b = ( radialSegments + 1 ) * j + ( i - 1 );\n\t\t\t\tconst c = ( radialSegments + 1 ) * j + i;\n\t\t\t\tconst d = ( radialSegments + 1 ) * ( j - 1 ) + i;\n\n\t\t\t\t// faces\n\n\t\t\t\tindices.push( a, b, d );\n\t\t\t\tindices.push( b, c, d );\n\n\t\t\t}\n\n\t\t}\n\n\t\t// build geometry\n\n\t\tthis.setIndex( indices );\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tthis.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );\n\n\t\t// this function calculates the current position on the torus curve\n\n\t\tfunction calculatePositionOnCurve( u, p, q, radius, position ) {\n\n\t\t\tconst cu = Math.cos( u );\n\t\t\tconst su = Math.sin( u );\n\t\t\tconst quOverP = q / p * u;\n\t\t\tconst cs = Math.cos( quOverP );\n\n\t\t\tposition.x = radius * ( 2 + cs ) * 0.5 * cu;\n\t\t\tposition.y = radius * ( 2 + cs ) * su * 0.5;\n\t\t\tposition.z = radius * Math.sin( quOverP ) * 0.5;\n\n\t\t}\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.parameters = Object.assign( {}, source.parameters );\n\n\t\treturn this;\n\n\t}\n\n\tstatic fromJSON( data ) {\n\n\t\treturn new TorusKnotGeometry( data.radius, data.tube, data.tubularSegments, data.radialSegments, data.p, data.q );\n\n\t}\n\n}\n\nclass TubeGeometry extends BufferGeometry {\n\n\tconstructor( path = new QuadraticBezierCurve3( new Vector3( - 1, - 1, 0 ), new Vector3( - 1, 1, 0 ), new Vector3( 1, 1, 0 ) ), tubularSegments = 64, radius = 1, radialSegments = 8, closed = false ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'TubeGeometry';\n\n\t\tthis.parameters = {\n\t\t\tpath: path,\n\t\t\ttubularSegments: tubularSegments,\n\t\t\tradius: radius,\n\t\t\tradialSegments: radialSegments,\n\t\t\tclosed: closed\n\t\t};\n\n\t\tconst frames = path.computeFrenetFrames( tubularSegments, closed );\n\n\t\t// expose internals\n\n\t\tthis.tangents = frames.tangents;\n\t\tthis.normals = frames.normals;\n\t\tthis.binormals = frames.binormals;\n\n\t\t// helper variables\n\n\t\tconst vertex = new Vector3();\n\t\tconst normal = new Vector3();\n\t\tconst uv = new Vector2();\n\t\tlet P = new Vector3();\n\n\t\t// buffer\n\n\t\tconst vertices = [];\n\t\tconst normals = [];\n\t\tconst uvs = [];\n\t\tconst indices = [];\n\n\t\t// create buffer data\n\n\t\tgenerateBufferData();\n\n\t\t// build geometry\n\n\t\tthis.setIndex( indices );\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tthis.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );\n\n\t\t// functions\n\n\t\tfunction generateBufferData() {\n\n\t\t\tfor ( let i = 0; i < tubularSegments; i ++ ) {\n\n\t\t\t\tgenerateSegment( i );\n\n\t\t\t}\n\n\t\t\t// if the geometry is not closed, generate the last row of vertices and normals\n\t\t\t// at the regular position on the given path\n\t\t\t//\n\t\t\t// if the geometry is closed, duplicate the first row of vertices and normals (uvs will differ)\n\n\t\t\tgenerateSegment( ( closed === false ) ? tubularSegments : 0 );\n\n\t\t\t// uvs are generated in a separate function.\n\t\t\t// this makes it easy compute correct values for closed geometries\n\n\t\t\tgenerateUVs();\n\n\t\t\t// finally create faces\n\n\t\t\tgenerateIndices();\n\n\t\t}\n\n\t\tfunction generateSegment( i ) {\n\n\t\t\t// we use getPointAt to sample evenly distributed points from the given path\n\n\t\t\tP = path.getPointAt( i / tubularSegments, P );\n\n\t\t\t// retrieve corresponding normal and binormal\n\n\t\t\tconst N = frames.normals[ i ];\n\t\t\tconst B = frames.binormals[ i ];\n\n\t\t\t// generate normals and vertices for the current segment\n\n\t\t\tfor ( let j = 0; j <= radialSegments; j ++ ) {\n\n\t\t\t\tconst v = j / radialSegments * Math.PI * 2;\n\n\t\t\t\tconst sin = Math.sin( v );\n\t\t\t\tconst cos = - Math.cos( v );\n\n\t\t\t\t// normal\n\n\t\t\t\tnormal.x = ( cos * N.x + sin * B.x );\n\t\t\t\tnormal.y = ( cos * N.y + sin * B.y );\n\t\t\t\tnormal.z = ( cos * N.z + sin * B.z );\n\t\t\t\tnormal.normalize();\n\n\t\t\t\tnormals.push( normal.x, normal.y, normal.z );\n\n\t\t\t\t// vertex\n\n\t\t\t\tvertex.x = P.x + radius * normal.x;\n\t\t\t\tvertex.y = P.y + radius * normal.y;\n\t\t\t\tvertex.z = P.z + radius * normal.z;\n\n\t\t\t\tvertices.push( vertex.x, vertex.y, vertex.z );\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction generateIndices() {\n\n\t\t\tfor ( let j = 1; j <= tubularSegments; j ++ ) {\n\n\t\t\t\tfor ( let i = 1; i <= radialSegments; i ++ ) {\n\n\t\t\t\t\tconst a = ( radialSegments + 1 ) * ( j - 1 ) + ( i - 1 );\n\t\t\t\t\tconst b = ( radialSegments + 1 ) * j + ( i - 1 );\n\t\t\t\t\tconst c = ( radialSegments + 1 ) * j + i;\n\t\t\t\t\tconst d = ( radialSegments + 1 ) * ( j - 1 ) + i;\n\n\t\t\t\t\t// faces\n\n\t\t\t\t\tindices.push( a, b, d );\n\t\t\t\t\tindices.push( b, c, d );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction generateUVs() {\n\n\t\t\tfor ( let i = 0; i <= tubularSegments; i ++ ) {\n\n\t\t\t\tfor ( let j = 0; j <= radialSegments; j ++ ) {\n\n\t\t\t\t\tuv.x = i / tubularSegments;\n\t\t\t\t\tuv.y = j / radialSegments;\n\n\t\t\t\t\tuvs.push( uv.x, uv.y );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.parameters = Object.assign( {}, source.parameters );\n\n\t\treturn this;\n\n\t}\n\n\ttoJSON() {\n\n\t\tconst data = super.toJSON();\n\n\t\tdata.path = this.parameters.path.toJSON();\n\n\t\treturn data;\n\n\t}\n\n\tstatic fromJSON( data ) {\n\n\t\t// This only works for built-in curves (e.g. CatmullRomCurve3).\n\t\t// User defined curves or instances of CurvePath will not be deserialized.\n\t\treturn new TubeGeometry(\n\t\t\tnew Curves[ data.path.type ]().fromJSON( data.path ),\n\t\t\tdata.tubularSegments,\n\t\t\tdata.radius,\n\t\t\tdata.radialSegments,\n\t\t\tdata.closed\n\t\t);\n\n\t}\n\n}\n\nclass WireframeGeometry extends BufferGeometry {\n\n\tconstructor( geometry = null ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'WireframeGeometry';\n\n\t\tthis.parameters = {\n\t\t\tgeometry: geometry\n\t\t};\n\n\t\tif ( geometry !== null ) {\n\n\t\t\t// buffer\n\n\t\t\tconst vertices = [];\n\t\t\tconst edges = new Set();\n\n\t\t\t// helper variables\n\n\t\t\tconst start = new Vector3();\n\t\t\tconst end = new Vector3();\n\n\t\t\tif ( geometry.index !== null ) {\n\n\t\t\t\t// indexed BufferGeometry\n\n\t\t\t\tconst position = geometry.attributes.position;\n\t\t\t\tconst indices = geometry.index;\n\t\t\t\tlet groups = geometry.groups;\n\n\t\t\t\tif ( groups.length === 0 ) {\n\n\t\t\t\t\tgroups = [ { start: 0, count: indices.count, materialIndex: 0 } ];\n\n\t\t\t\t}\n\n\t\t\t\t// create a data structure that contains all edges without duplicates\n\n\t\t\t\tfor ( let o = 0, ol = groups.length; o < ol; ++ o ) {\n\n\t\t\t\t\tconst group = groups[ o ];\n\n\t\t\t\t\tconst groupStart = group.start;\n\t\t\t\t\tconst groupCount = group.count;\n\n\t\t\t\t\tfor ( let i = groupStart, l = ( groupStart + groupCount ); i < l; i += 3 ) {\n\n\t\t\t\t\t\tfor ( let j = 0; j < 3; j ++ ) {\n\n\t\t\t\t\t\t\tconst index1 = indices.getX( i + j );\n\t\t\t\t\t\t\tconst index2 = indices.getX( i + ( j + 1 ) % 3 );\n\n\t\t\t\t\t\t\tstart.fromBufferAttribute( position, index1 );\n\t\t\t\t\t\t\tend.fromBufferAttribute( position, index2 );\n\n\t\t\t\t\t\t\tif ( isUniqueEdge( start, end, edges ) === true ) {\n\n\t\t\t\t\t\t\t\tvertices.push( start.x, start.y, start.z );\n\t\t\t\t\t\t\t\tvertices.push( end.x, end.y, end.z );\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\t// non-indexed BufferGeometry\n\n\t\t\t\tconst position = geometry.attributes.position;\n\n\t\t\t\tfor ( let i = 0, l = ( position.count / 3 ); i < l; i ++ ) {\n\n\t\t\t\t\tfor ( let j = 0; j < 3; j ++ ) {\n\n\t\t\t\t\t\t// three edges per triangle, an edge is represented as (index1, index2)\n\t\t\t\t\t\t// e.g. the first triangle has the following edges: (0,1),(1,2),(2,0)\n\n\t\t\t\t\t\tconst index1 = 3 * i + j;\n\t\t\t\t\t\tconst index2 = 3 * i + ( ( j + 1 ) % 3 );\n\n\t\t\t\t\t\tstart.fromBufferAttribute( position, index1 );\n\t\t\t\t\t\tend.fromBufferAttribute( position, index2 );\n\n\t\t\t\t\t\tif ( isUniqueEdge( start, end, edges ) === true ) {\n\n\t\t\t\t\t\t\tvertices.push( start.x, start.y, start.z );\n\t\t\t\t\t\t\tvertices.push( end.x, end.y, end.z );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// build geometry\n\n\t\t\tthis.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\n\t\t}\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.parameters = Object.assign( {}, source.parameters );\n\n\t\treturn this;\n\n\t}\n\n}\n\nfunction isUniqueEdge( start, end, edges ) {\n\n\tconst hash1 = `${start.x},${start.y},${start.z}-${end.x},${end.y},${end.z}`;\n\tconst hash2 = `${end.x},${end.y},${end.z}-${start.x},${start.y},${start.z}`; // coincident edge\n\n\tif ( edges.has( hash1 ) === true || edges.has( hash2 ) === true ) {\n\n\t\treturn false;\n\n\t} else {\n\n\t\tedges.add( hash1 );\n\t\tedges.add( hash2 );\n\t\treturn true;\n\n\t}\n\n}\n\nvar Geometries = /*#__PURE__*/Object.freeze({\n\t__proto__: null,\n\tBoxGeometry: BoxGeometry,\n\tCapsuleGeometry: CapsuleGeometry,\n\tCircleGeometry: CircleGeometry,\n\tConeGeometry: ConeGeometry,\n\tCylinderGeometry: CylinderGeometry,\n\tDodecahedronGeometry: DodecahedronGeometry,\n\tEdgesGeometry: EdgesGeometry,\n\tExtrudeGeometry: ExtrudeGeometry,\n\tIcosahedronGeometry: IcosahedronGeometry,\n\tLatheGeometry: LatheGeometry,\n\tOctahedronGeometry: OctahedronGeometry,\n\tPlaneGeometry: PlaneGeometry,\n\tPolyhedronGeometry: PolyhedronGeometry,\n\tRingGeometry: RingGeometry,\n\tShapeGeometry: ShapeGeometry,\n\tSphereGeometry: SphereGeometry,\n\tTetrahedronGeometry: TetrahedronGeometry,\n\tTorusGeometry: TorusGeometry,\n\tTorusKnotGeometry: TorusKnotGeometry,\n\tTubeGeometry: TubeGeometry,\n\tWireframeGeometry: WireframeGeometry\n});\n\nclass ShadowMaterial extends Material {\n\n\tconstructor( parameters ) {\n\n\t\tsuper();\n\n\t\tthis.isShadowMaterial = true;\n\n\t\tthis.type = 'ShadowMaterial';\n\n\t\tthis.color = new Color( 0x000000 );\n\t\tthis.transparent = true;\n\n\t\tthis.fog = true;\n\n\t\tthis.setValues( parameters );\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.color.copy( source.color );\n\n\t\tthis.fog = source.fog;\n\n\t\treturn this;\n\n\t}\n\n}\n\nclass RawShaderMaterial extends ShaderMaterial {\n\n\tconstructor( parameters ) {\n\n\t\tsuper( parameters );\n\n\t\tthis.isRawShaderMaterial = true;\n\n\t\tthis.type = 'RawShaderMaterial';\n\n\t}\n\n}\n\nclass MeshStandardMaterial extends Material {\n\n\tconstructor( parameters ) {\n\n\t\tsuper();\n\n\t\tthis.isMeshStandardMaterial = true;\n\n\t\tthis.defines = { 'STANDARD': '' };\n\n\t\tthis.type = 'MeshStandardMaterial';\n\n\t\tthis.color = new Color( 0xffffff ); // diffuse\n\t\tthis.roughness = 1.0;\n\t\tthis.metalness = 0.0;\n\n\t\tthis.map = null;\n\n\t\tthis.lightMap = null;\n\t\tthis.lightMapIntensity = 1.0;\n\n\t\tthis.aoMap = null;\n\t\tthis.aoMapIntensity = 1.0;\n\n\t\tthis.emissive = new Color( 0x000000 );\n\t\tthis.emissiveIntensity = 1.0;\n\t\tthis.emissiveMap = null;\n\n\t\tthis.bumpMap = null;\n\t\tthis.bumpScale = 1;\n\n\t\tthis.normalMap = null;\n\t\tthis.normalMapType = TangentSpaceNormalMap;\n\t\tthis.normalScale = new Vector2( 1, 1 );\n\n\t\tthis.displacementMap = null;\n\t\tthis.displacementScale = 1;\n\t\tthis.displacementBias = 0;\n\n\t\tthis.roughnessMap = null;\n\n\t\tthis.metalnessMap = null;\n\n\t\tthis.alphaMap = null;\n\n\t\tthis.envMap = null;\n\t\tthis.envMapRotation = new Euler();\n\t\tthis.envMapIntensity = 1.0;\n\n\t\tthis.wireframe = false;\n\t\tthis.wireframeLinewidth = 1;\n\t\tthis.wireframeLinecap = 'round';\n\t\tthis.wireframeLinejoin = 'round';\n\n\t\tthis.flatShading = false;\n\n\t\tthis.fog = true;\n\n\t\tthis.setValues( parameters );\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.defines = { 'STANDARD': '' };\n\n\t\tthis.color.copy( source.color );\n\t\tthis.roughness = source.roughness;\n\t\tthis.metalness = source.metalness;\n\n\t\tthis.map = source.map;\n\n\t\tthis.lightMap = source.lightMap;\n\t\tthis.lightMapIntensity = source.lightMapIntensity;\n\n\t\tthis.aoMap = source.aoMap;\n\t\tthis.aoMapIntensity = source.aoMapIntensity;\n\n\t\tthis.emissive.copy( source.emissive );\n\t\tthis.emissiveMap = source.emissiveMap;\n\t\tthis.emissiveIntensity = source.emissiveIntensity;\n\n\t\tthis.bumpMap = source.bumpMap;\n\t\tthis.bumpScale = source.bumpScale;\n\n\t\tthis.normalMap = source.normalMap;\n\t\tthis.normalMapType = source.normalMapType;\n\t\tthis.normalScale.copy( source.normalScale );\n\n\t\tthis.displacementMap = source.displacementMap;\n\t\tthis.displacementScale = source.displacementScale;\n\t\tthis.displacementBias = source.displacementBias;\n\n\t\tthis.roughnessMap = source.roughnessMap;\n\n\t\tthis.metalnessMap = source.metalnessMap;\n\n\t\tthis.alphaMap = source.alphaMap;\n\n\t\tthis.envMap = source.envMap;\n\t\tthis.envMapRotation.copy( source.envMapRotation );\n\t\tthis.envMapIntensity = source.envMapIntensity;\n\n\t\tthis.wireframe = source.wireframe;\n\t\tthis.wireframeLinewidth = source.wireframeLinewidth;\n\t\tthis.wireframeLinecap = source.wireframeLinecap;\n\t\tthis.wireframeLinejoin = source.wireframeLinejoin;\n\n\t\tthis.flatShading = source.flatShading;\n\n\t\tthis.fog = source.fog;\n\n\t\treturn this;\n\n\t}\n\n}\n\nclass MeshPhysicalMaterial extends MeshStandardMaterial {\n\n\tconstructor( parameters ) {\n\n\t\tsuper();\n\n\t\tthis.isMeshPhysicalMaterial = true;\n\n\t\tthis.defines = {\n\n\t\t\t'STANDARD': '',\n\t\t\t'PHYSICAL': ''\n\n\t\t};\n\n\t\tthis.type = 'MeshPhysicalMaterial';\n\n\t\tthis.anisotropyRotation = 0;\n\t\tthis.anisotropyMap = null;\n\n\t\tthis.clearcoatMap = null;\n\t\tthis.clearcoatRoughness = 0.0;\n\t\tthis.clearcoatRoughnessMap = null;\n\t\tthis.clearcoatNormalScale = new Vector2( 1, 1 );\n\t\tthis.clearcoatNormalMap = null;\n\n\t\tthis.ior = 1.5;\n\n\t\tObject.defineProperty( this, 'reflectivity', {\n\t\t\tget: function () {\n\n\t\t\t\treturn ( clamp( 2.5 * ( this.ior - 1 ) / ( this.ior + 1 ), 0, 1 ) );\n\n\t\t\t},\n\t\t\tset: function ( reflectivity ) {\n\n\t\t\t\tthis.ior = ( 1 + 0.4 * reflectivity ) / ( 1 - 0.4 * reflectivity );\n\n\t\t\t}\n\t\t} );\n\n\t\tthis.iridescenceMap = null;\n\t\tthis.iridescenceIOR = 1.3;\n\t\tthis.iridescenceThicknessRange = [ 100, 400 ];\n\t\tthis.iridescenceThicknessMap = null;\n\n\t\tthis.sheenColor = new Color( 0x000000 );\n\t\tthis.sheenColorMap = null;\n\t\tthis.sheenRoughness = 1.0;\n\t\tthis.sheenRoughnessMap = null;\n\n\t\tthis.transmissionMap = null;\n\n\t\tthis.thickness = 0;\n\t\tthis.thicknessMap = null;\n\t\tthis.attenuationDistance = Infinity;\n\t\tthis.attenuationColor = new Color( 1, 1, 1 );\n\n\t\tthis.specularIntensity = 1.0;\n\t\tthis.specularIntensityMap = null;\n\t\tthis.specularColor = new Color( 1, 1, 1 );\n\t\tthis.specularColorMap = null;\n\n\t\tthis._anisotropy = 0;\n\t\tthis._clearcoat = 0;\n\t\tthis._dispersion = 0;\n\t\tthis._iridescence = 0;\n\t\tthis._sheen = 0.0;\n\t\tthis._transmission = 0;\n\n\t\tthis.setValues( parameters );\n\n\t}\n\n\tget anisotropy() {\n\n\t\treturn this._anisotropy;\n\n\t}\n\n\tset anisotropy( value ) {\n\n\t\tif ( this._anisotropy > 0 !== value > 0 ) {\n\n\t\t\tthis.version ++;\n\n\t\t}\n\n\t\tthis._anisotropy = value;\n\n\t}\n\n\tget clearcoat() {\n\n\t\treturn this._clearcoat;\n\n\t}\n\n\tset clearcoat( value ) {\n\n\t\tif ( this._clearcoat > 0 !== value > 0 ) {\n\n\t\t\tthis.version ++;\n\n\t\t}\n\n\t\tthis._clearcoat = value;\n\n\t}\n\n\tget iridescence() {\n\n\t\treturn this._iridescence;\n\n\t}\n\n\tset iridescence( value ) {\n\n\t\tif ( this._iridescence > 0 !== value > 0 ) {\n\n\t\t\tthis.version ++;\n\n\t\t}\n\n\t\tthis._iridescence = value;\n\n\t}\n\n\tget dispersion() {\n\n\t\treturn this._dispersion;\n\n\t}\n\n\tset dispersion( value ) {\n\n\t\tif ( this._dispersion > 0 !== value > 0 ) {\n\n\t\t\tthis.version ++;\n\n\t\t}\n\n\t\tthis._dispersion = value;\n\n\t}\n\n\tget sheen() {\n\n\t\treturn this._sheen;\n\n\t}\n\n\tset sheen( value ) {\n\n\t\tif ( this._sheen > 0 !== value > 0 ) {\n\n\t\t\tthis.version ++;\n\n\t\t}\n\n\t\tthis._sheen = value;\n\n\t}\n\n\tget transmission() {\n\n\t\treturn this._transmission;\n\n\t}\n\n\tset transmission( value ) {\n\n\t\tif ( this._transmission > 0 !== value > 0 ) {\n\n\t\t\tthis.version ++;\n\n\t\t}\n\n\t\tthis._transmission = value;\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.defines = {\n\n\t\t\t'STANDARD': '',\n\t\t\t'PHYSICAL': ''\n\n\t\t};\n\n\t\tthis.anisotropy = source.anisotropy;\n\t\tthis.anisotropyRotation = source.anisotropyRotation;\n\t\tthis.anisotropyMap = source.anisotropyMap;\n\n\t\tthis.clearcoat = source.clearcoat;\n\t\tthis.clearcoatMap = source.clearcoatMap;\n\t\tthis.clearcoatRoughness = source.clearcoatRoughness;\n\t\tthis.clearcoatRoughnessMap = source.clearcoatRoughnessMap;\n\t\tthis.clearcoatNormalMap = source.clearcoatNormalMap;\n\t\tthis.clearcoatNormalScale.copy( source.clearcoatNormalScale );\n\n\t\tthis.dispersion = source.dispersion;\n\t\tthis.ior = source.ior;\n\n\t\tthis.iridescence = source.iridescence;\n\t\tthis.iridescenceMap = source.iridescenceMap;\n\t\tthis.iridescenceIOR = source.iridescenceIOR;\n\t\tthis.iridescenceThicknessRange = [ ...source.iridescenceThicknessRange ];\n\t\tthis.iridescenceThicknessMap = source.iridescenceThicknessMap;\n\n\t\tthis.sheen = source.sheen;\n\t\tthis.sheenColor.copy( source.sheenColor );\n\t\tthis.sheenColorMap = source.sheenColorMap;\n\t\tthis.sheenRoughness = source.sheenRoughness;\n\t\tthis.sheenRoughnessMap = source.sheenRoughnessMap;\n\n\t\tthis.transmission = source.transmission;\n\t\tthis.transmissionMap = source.transmissionMap;\n\n\t\tthis.thickness = source.thickness;\n\t\tthis.thicknessMap = source.thicknessMap;\n\t\tthis.attenuationDistance = source.attenuationDistance;\n\t\tthis.attenuationColor.copy( source.attenuationColor );\n\n\t\tthis.specularIntensity = source.specularIntensity;\n\t\tthis.specularIntensityMap = source.specularIntensityMap;\n\t\tthis.specularColor.copy( source.specularColor );\n\t\tthis.specularColorMap = source.specularColorMap;\n\n\t\treturn this;\n\n\t}\n\n}\n\nclass MeshPhongMaterial extends Material {\n\n\tconstructor( parameters ) {\n\n\t\tsuper();\n\n\t\tthis.isMeshPhongMaterial = true;\n\n\t\tthis.type = 'MeshPhongMaterial';\n\n\t\tthis.color = new Color( 0xffffff ); // diffuse\n\t\tthis.specular = new Color( 0x111111 );\n\t\tthis.shininess = 30;\n\n\t\tthis.map = null;\n\n\t\tthis.lightMap = null;\n\t\tthis.lightMapIntensity = 1.0;\n\n\t\tthis.aoMap = null;\n\t\tthis.aoMapIntensity = 1.0;\n\n\t\tthis.emissive = new Color( 0x000000 );\n\t\tthis.emissiveIntensity = 1.0;\n\t\tthis.emissiveMap = null;\n\n\t\tthis.bumpMap = null;\n\t\tthis.bumpScale = 1;\n\n\t\tthis.normalMap = null;\n\t\tthis.normalMapType = TangentSpaceNormalMap;\n\t\tthis.normalScale = new Vector2( 1, 1 );\n\n\t\tthis.displacementMap = null;\n\t\tthis.displacementScale = 1;\n\t\tthis.displacementBias = 0;\n\n\t\tthis.specularMap = null;\n\n\t\tthis.alphaMap = null;\n\n\t\tthis.envMap = null;\n\t\tthis.envMapRotation = new Euler();\n\t\tthis.combine = MultiplyOperation;\n\t\tthis.reflectivity = 1;\n\t\tthis.refractionRatio = 0.98;\n\n\t\tthis.wireframe = false;\n\t\tthis.wireframeLinewidth = 1;\n\t\tthis.wireframeLinecap = 'round';\n\t\tthis.wireframeLinejoin = 'round';\n\n\t\tthis.flatShading = false;\n\n\t\tthis.fog = true;\n\n\t\tthis.setValues( parameters );\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.color.copy( source.color );\n\t\tthis.specular.copy( source.specular );\n\t\tthis.shininess = source.shininess;\n\n\t\tthis.map = source.map;\n\n\t\tthis.lightMap = source.lightMap;\n\t\tthis.lightMapIntensity = source.lightMapIntensity;\n\n\t\tthis.aoMap = source.aoMap;\n\t\tthis.aoMapIntensity = source.aoMapIntensity;\n\n\t\tthis.emissive.copy( source.emissive );\n\t\tthis.emissiveMap = source.emissiveMap;\n\t\tthis.emissiveIntensity = source.emissiveIntensity;\n\n\t\tthis.bumpMap = source.bumpMap;\n\t\tthis.bumpScale = source.bumpScale;\n\n\t\tthis.normalMap = source.normalMap;\n\t\tthis.normalMapType = source.normalMapType;\n\t\tthis.normalScale.copy( source.normalScale );\n\n\t\tthis.displacementMap = source.displacementMap;\n\t\tthis.displacementScale = source.displacementScale;\n\t\tthis.displacementBias = source.displacementBias;\n\n\t\tthis.specularMap = source.specularMap;\n\n\t\tthis.alphaMap = source.alphaMap;\n\n\t\tthis.envMap = source.envMap;\n\t\tthis.envMapRotation.copy( source.envMapRotation );\n\t\tthis.combine = source.combine;\n\t\tthis.reflectivity = source.reflectivity;\n\t\tthis.refractionRatio = source.refractionRatio;\n\n\t\tthis.wireframe = source.wireframe;\n\t\tthis.wireframeLinewidth = source.wireframeLinewidth;\n\t\tthis.wireframeLinecap = source.wireframeLinecap;\n\t\tthis.wireframeLinejoin = source.wireframeLinejoin;\n\n\t\tthis.flatShading = source.flatShading;\n\n\t\tthis.fog = source.fog;\n\n\t\treturn this;\n\n\t}\n\n}\n\nclass MeshToonMaterial extends Material {\n\n\tconstructor( parameters ) {\n\n\t\tsuper();\n\n\t\tthis.isMeshToonMaterial = true;\n\n\t\tthis.defines = { 'TOON': '' };\n\n\t\tthis.type = 'MeshToonMaterial';\n\n\t\tthis.color = new Color( 0xffffff );\n\n\t\tthis.map = null;\n\t\tthis.gradientMap = null;\n\n\t\tthis.lightMap = null;\n\t\tthis.lightMapIntensity = 1.0;\n\n\t\tthis.aoMap = null;\n\t\tthis.aoMapIntensity = 1.0;\n\n\t\tthis.emissive = new Color( 0x000000 );\n\t\tthis.emissiveIntensity = 1.0;\n\t\tthis.emissiveMap = null;\n\n\t\tthis.bumpMap = null;\n\t\tthis.bumpScale = 1;\n\n\t\tthis.normalMap = null;\n\t\tthis.normalMapType = TangentSpaceNormalMap;\n\t\tthis.normalScale = new Vector2( 1, 1 );\n\n\t\tthis.displacementMap = null;\n\t\tthis.displacementScale = 1;\n\t\tthis.displacementBias = 0;\n\n\t\tthis.alphaMap = null;\n\n\t\tthis.wireframe = false;\n\t\tthis.wireframeLinewidth = 1;\n\t\tthis.wireframeLinecap = 'round';\n\t\tthis.wireframeLinejoin = 'round';\n\n\t\tthis.fog = true;\n\n\t\tthis.setValues( parameters );\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.color.copy( source.color );\n\n\t\tthis.map = source.map;\n\t\tthis.gradientMap = source.gradientMap;\n\n\t\tthis.lightMap = source.lightMap;\n\t\tthis.lightMapIntensity = source.lightMapIntensity;\n\n\t\tthis.aoMap = source.aoMap;\n\t\tthis.aoMapIntensity = source.aoMapIntensity;\n\n\t\tthis.emissive.copy( source.emissive );\n\t\tthis.emissiveMap = source.emissiveMap;\n\t\tthis.emissiveIntensity = source.emissiveIntensity;\n\n\t\tthis.bumpMap = source.bumpMap;\n\t\tthis.bumpScale = source.bumpScale;\n\n\t\tthis.normalMap = source.normalMap;\n\t\tthis.normalMapType = source.normalMapType;\n\t\tthis.normalScale.copy( source.normalScale );\n\n\t\tthis.displacementMap = source.displacementMap;\n\t\tthis.displacementScale = source.displacementScale;\n\t\tthis.displacementBias = source.displacementBias;\n\n\t\tthis.alphaMap = source.alphaMap;\n\n\t\tthis.wireframe = source.wireframe;\n\t\tthis.wireframeLinewidth = source.wireframeLinewidth;\n\t\tthis.wireframeLinecap = source.wireframeLinecap;\n\t\tthis.wireframeLinejoin = source.wireframeLinejoin;\n\n\t\tthis.fog = source.fog;\n\n\t\treturn this;\n\n\t}\n\n}\n\nclass MeshNormalMaterial extends Material {\n\n\tconstructor( parameters ) {\n\n\t\tsuper();\n\n\t\tthis.isMeshNormalMaterial = true;\n\n\t\tthis.type = 'MeshNormalMaterial';\n\n\t\tthis.bumpMap = null;\n\t\tthis.bumpScale = 1;\n\n\t\tthis.normalMap = null;\n\t\tthis.normalMapType = TangentSpaceNormalMap;\n\t\tthis.normalScale = new Vector2( 1, 1 );\n\n\t\tthis.displacementMap = null;\n\t\tthis.displacementScale = 1;\n\t\tthis.displacementBias = 0;\n\n\t\tthis.wireframe = false;\n\t\tthis.wireframeLinewidth = 1;\n\n\t\tthis.flatShading = false;\n\n\t\tthis.setValues( parameters );\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.bumpMap = source.bumpMap;\n\t\tthis.bumpScale = source.bumpScale;\n\n\t\tthis.normalMap = source.normalMap;\n\t\tthis.normalMapType = source.normalMapType;\n\t\tthis.normalScale.copy( source.normalScale );\n\n\t\tthis.displacementMap = source.displacementMap;\n\t\tthis.displacementScale = source.displacementScale;\n\t\tthis.displacementBias = source.displacementBias;\n\n\t\tthis.wireframe = source.wireframe;\n\t\tthis.wireframeLinewidth = source.wireframeLinewidth;\n\n\t\tthis.flatShading = source.flatShading;\n\n\t\treturn this;\n\n\t}\n\n}\n\nclass MeshLambertMaterial extends Material {\n\n\tconstructor( parameters ) {\n\n\t\tsuper();\n\n\t\tthis.isMeshLambertMaterial = true;\n\n\t\tthis.type = 'MeshLambertMaterial';\n\n\t\tthis.color = new Color( 0xffffff ); // diffuse\n\n\t\tthis.map = null;\n\n\t\tthis.lightMap = null;\n\t\tthis.lightMapIntensity = 1.0;\n\n\t\tthis.aoMap = null;\n\t\tthis.aoMapIntensity = 1.0;\n\n\t\tthis.emissive = new Color( 0x000000 );\n\t\tthis.emissiveIntensity = 1.0;\n\t\tthis.emissiveMap = null;\n\n\t\tthis.bumpMap = null;\n\t\tthis.bumpScale = 1;\n\n\t\tthis.normalMap = null;\n\t\tthis.normalMapType = TangentSpaceNormalMap;\n\t\tthis.normalScale = new Vector2( 1, 1 );\n\n\t\tthis.displacementMap = null;\n\t\tthis.displacementScale = 1;\n\t\tthis.displacementBias = 0;\n\n\t\tthis.specularMap = null;\n\n\t\tthis.alphaMap = null;\n\n\t\tthis.envMap = null;\n\t\tthis.envMapRotation = new Euler();\n\t\tthis.combine = MultiplyOperation;\n\t\tthis.reflectivity = 1;\n\t\tthis.refractionRatio = 0.98;\n\n\t\tthis.wireframe = false;\n\t\tthis.wireframeLinewidth = 1;\n\t\tthis.wireframeLinecap = 'round';\n\t\tthis.wireframeLinejoin = 'round';\n\n\t\tthis.flatShading = false;\n\n\t\tthis.fog = true;\n\n\t\tthis.setValues( parameters );\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.color.copy( source.color );\n\n\t\tthis.map = source.map;\n\n\t\tthis.lightMap = source.lightMap;\n\t\tthis.lightMapIntensity = source.lightMapIntensity;\n\n\t\tthis.aoMap = source.aoMap;\n\t\tthis.aoMapIntensity = source.aoMapIntensity;\n\n\t\tthis.emissive.copy( source.emissive );\n\t\tthis.emissiveMap = source.emissiveMap;\n\t\tthis.emissiveIntensity = source.emissiveIntensity;\n\n\t\tthis.bumpMap = source.bumpMap;\n\t\tthis.bumpScale = source.bumpScale;\n\n\t\tthis.normalMap = source.normalMap;\n\t\tthis.normalMapType = source.normalMapType;\n\t\tthis.normalScale.copy( source.normalScale );\n\n\t\tthis.displacementMap = source.displacementMap;\n\t\tthis.displacementScale = source.displacementScale;\n\t\tthis.displacementBias = source.displacementBias;\n\n\t\tthis.specularMap = source.specularMap;\n\n\t\tthis.alphaMap = source.alphaMap;\n\n\t\tthis.envMap = source.envMap;\n\t\tthis.envMapRotation.copy( source.envMapRotation );\n\t\tthis.combine = source.combine;\n\t\tthis.reflectivity = source.reflectivity;\n\t\tthis.refractionRatio = source.refractionRatio;\n\n\t\tthis.wireframe = source.wireframe;\n\t\tthis.wireframeLinewidth = source.wireframeLinewidth;\n\t\tthis.wireframeLinecap = source.wireframeLinecap;\n\t\tthis.wireframeLinejoin = source.wireframeLinejoin;\n\n\t\tthis.flatShading = source.flatShading;\n\n\t\tthis.fog = source.fog;\n\n\t\treturn this;\n\n\t}\n\n}\n\nclass MeshMatcapMaterial extends Material {\n\n\tconstructor( parameters ) {\n\n\t\tsuper();\n\n\t\tthis.isMeshMatcapMaterial = true;\n\n\t\tthis.defines = { 'MATCAP': '' };\n\n\t\tthis.type = 'MeshMatcapMaterial';\n\n\t\tthis.color = new Color( 0xffffff ); // diffuse\n\n\t\tthis.matcap = null;\n\n\t\tthis.map = null;\n\n\t\tthis.bumpMap = null;\n\t\tthis.bumpScale = 1;\n\n\t\tthis.normalMap = null;\n\t\tthis.normalMapType = TangentSpaceNormalMap;\n\t\tthis.normalScale = new Vector2( 1, 1 );\n\n\t\tthis.displacementMap = null;\n\t\tthis.displacementScale = 1;\n\t\tthis.displacementBias = 0;\n\n\t\tthis.alphaMap = null;\n\n\t\tthis.flatShading = false;\n\n\t\tthis.fog = true;\n\n\t\tthis.setValues( parameters );\n\n\t}\n\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.defines = { 'MATCAP': '' };\n\n\t\tthis.color.copy( source.color );\n\n\t\tthis.matcap = source.matcap;\n\n\t\tthis.map = source.map;\n\n\t\tthis.bumpMap = source.bumpMap;\n\t\tthis.bumpScale = source.bumpScale;\n\n\t\tthis.normalMap = source.normalMap;\n\t\tthis.normalMapType = source.normalMapType;\n\t\tthis.normalScale.copy( source.normalScale );\n\n\t\tthis.displacementMap = source.displacementMap;\n\t\tthis.displacementScale = source.displacementScale;\n\t\tthis.displacementBias = source.displacementBias;\n\n\t\tthis.alphaMap = source.alphaMap;\n\n\t\tthis.flatShading = source.flatShading;\n\n\t\tthis.fog = source.fog;\n\n\t\treturn this;\n\n\t}\n\n}\n\nclass LineDashedMaterial extends LineBasicMaterial {\n\n\tconstructor( parameters ) {\n\n\t\tsuper();\n\n\t\tthis.isLineDashedMaterial = true;\n\n\t\tthis.type = 'LineDashedMaterial';\n\n\t\tthis.scale = 1;\n\t\tthis.dashSize = 3;\n\t\tthis.gapSize = 1;\n\n\t\tthis.setValues( parameters );\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.scale = source.scale;\n\t\tthis.dashSize = source.dashSize;\n\t\tthis.gapSize = source.gapSize;\n\n\t\treturn this;\n\n\t}\n\n}\n\n// converts an array to a specific type\nfunction convertArray( array, type, forceClone ) {\n\n\tif ( ! array || // let 'undefined' and 'null' pass\n\t\t! forceClone && array.constructor === type ) return array;\n\n\tif ( typeof type.BYTES_PER_ELEMENT === 'number' ) {\n\n\t\treturn new type( array ); // create typed array\n\n\t}\n\n\treturn Array.prototype.slice.call( array ); // create Array\n\n}\n\nfunction isTypedArray( object ) {\n\n\treturn ArrayBuffer.isView( object ) &&\n\t\t! ( object instanceof DataView );\n\n}\n\n// returns an array by which times and values can be sorted\nfunction getKeyframeOrder( times ) {\n\n\tfunction compareTime( i, j ) {\n\n\t\treturn times[ i ] - times[ j ];\n\n\t}\n\n\tconst n = times.length;\n\tconst result = new Array( n );\n\tfor ( let i = 0; i !== n; ++ i ) result[ i ] = i;\n\n\tresult.sort( compareTime );\n\n\treturn result;\n\n}\n\n// uses the array previously returned by 'getKeyframeOrder' to sort data\nfunction sortedArray( values, stride, order ) {\n\n\tconst nValues = values.length;\n\tconst result = new values.constructor( nValues );\n\n\tfor ( let i = 0, dstOffset = 0; dstOffset !== nValues; ++ i ) {\n\n\t\tconst srcOffset = order[ i ] * stride;\n\n\t\tfor ( let j = 0; j !== stride; ++ j ) {\n\n\t\t\tresult[ dstOffset ++ ] = values[ srcOffset + j ];\n\n\t\t}\n\n\t}\n\n\treturn result;\n\n}\n\n// function for parsing AOS keyframe formats\nfunction flattenJSON( jsonKeys, times, values, valuePropertyName ) {\n\n\tlet i = 1, key = jsonKeys[ 0 ];\n\n\twhile ( key !== undefined && key[ valuePropertyName ] === undefined ) {\n\n\t\tkey = jsonKeys[ i ++ ];\n\n\t}\n\n\tif ( key === undefined ) return; // no data\n\n\tlet value = key[ valuePropertyName ];\n\tif ( value === undefined ) return; // no data\n\n\tif ( Array.isArray( value ) ) {\n\n\t\tdo {\n\n\t\t\tvalue = key[ valuePropertyName ];\n\n\t\t\tif ( value !== undefined ) {\n\n\t\t\t\ttimes.push( key.time );\n\t\t\t\tvalues.push.apply( values, value ); // push all elements\n\n\t\t\t}\n\n\t\t\tkey = jsonKeys[ i ++ ];\n\n\t\t} while ( key !== undefined );\n\n\t} else if ( value.toArray !== undefined ) {\n\n\t\t// ...assume THREE.Math-ish\n\n\t\tdo {\n\n\t\t\tvalue = key[ valuePropertyName ];\n\n\t\t\tif ( value !== undefined ) {\n\n\t\t\t\ttimes.push( key.time );\n\t\t\t\tvalue.toArray( values, values.length );\n\n\t\t\t}\n\n\t\t\tkey = jsonKeys[ i ++ ];\n\n\t\t} while ( key !== undefined );\n\n\t} else {\n\n\t\t// otherwise push as-is\n\n\t\tdo {\n\n\t\t\tvalue = key[ valuePropertyName ];\n\n\t\t\tif ( value !== undefined ) {\n\n\t\t\t\ttimes.push( key.time );\n\t\t\t\tvalues.push( value );\n\n\t\t\t}\n\n\t\t\tkey = jsonKeys[ i ++ ];\n\n\t\t} while ( key !== undefined );\n\n\t}\n\n}\n\nfunction subclip( sourceClip, name, startFrame, endFrame, fps = 30 ) {\n\n\tconst clip = sourceClip.clone();\n\n\tclip.name = name;\n\n\tconst tracks = [];\n\n\tfor ( let i = 0; i < clip.tracks.length; ++ i ) {\n\n\t\tconst track = clip.tracks[ i ];\n\t\tconst valueSize = track.getValueSize();\n\n\t\tconst times = [];\n\t\tconst values = [];\n\n\t\tfor ( let j = 0; j < track.times.length; ++ j ) {\n\n\t\t\tconst frame = track.times[ j ] * fps;\n\n\t\t\tif ( frame < startFrame || frame >= endFrame ) continue;\n\n\t\t\ttimes.push( track.times[ j ] );\n\n\t\t\tfor ( let k = 0; k < valueSize; ++ k ) {\n\n\t\t\t\tvalues.push( track.values[ j * valueSize + k ] );\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( times.length === 0 ) continue;\n\n\t\ttrack.times = convertArray( times, track.times.constructor );\n\t\ttrack.values = convertArray( values, track.values.constructor );\n\n\t\ttracks.push( track );\n\n\t}\n\n\tclip.tracks = tracks;\n\n\t// find minimum .times value across all tracks in the trimmed clip\n\n\tlet minStartTime = Infinity;\n\n\tfor ( let i = 0; i < clip.tracks.length; ++ i ) {\n\n\t\tif ( minStartTime > clip.tracks[ i ].times[ 0 ] ) {\n\n\t\t\tminStartTime = clip.tracks[ i ].times[ 0 ];\n\n\t\t}\n\n\t}\n\n\t// shift all tracks such that clip begins at t=0\n\n\tfor ( let i = 0; i < clip.tracks.length; ++ i ) {\n\n\t\tclip.tracks[ i ].shift( - 1 * minStartTime );\n\n\t}\n\n\tclip.resetDuration();\n\n\treturn clip;\n\n}\n\nfunction makeClipAdditive( targetClip, referenceFrame = 0, referenceClip = targetClip, fps = 30 ) {\n\n\tif ( fps <= 0 ) fps = 30;\n\n\tconst numTracks = referenceClip.tracks.length;\n\tconst referenceTime = referenceFrame / fps;\n\n\t// Make each track's values relative to the values at the reference frame\n\tfor ( let i = 0; i < numTracks; ++ i ) {\n\n\t\tconst referenceTrack = referenceClip.tracks[ i ];\n\t\tconst referenceTrackType = referenceTrack.ValueTypeName;\n\n\t\t// Skip this track if it's non-numeric\n\t\tif ( referenceTrackType === 'bool' || referenceTrackType === 'string' ) continue;\n\n\t\t// Find the track in the target clip whose name and type matches the reference track\n\t\tconst targetTrack = targetClip.tracks.find( function ( track ) {\n\n\t\t\treturn track.name === referenceTrack.name\n\t\t\t\t&& track.ValueTypeName === referenceTrackType;\n\n\t\t} );\n\n\t\tif ( targetTrack === undefined ) continue;\n\n\t\tlet referenceOffset = 0;\n\t\tconst referenceValueSize = referenceTrack.getValueSize();\n\n\t\tif ( referenceTrack.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline ) {\n\n\t\t\treferenceOffset = referenceValueSize / 3;\n\n\t\t}\n\n\t\tlet targetOffset = 0;\n\t\tconst targetValueSize = targetTrack.getValueSize();\n\n\t\tif ( targetTrack.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline ) {\n\n\t\t\ttargetOffset = targetValueSize / 3;\n\n\t\t}\n\n\t\tconst lastIndex = referenceTrack.times.length - 1;\n\t\tlet referenceValue;\n\n\t\t// Find the value to subtract out of the track\n\t\tif ( referenceTime <= referenceTrack.times[ 0 ] ) {\n\n\t\t\t// Reference frame is earlier than the first keyframe, so just use the first keyframe\n\t\t\tconst startIndex = referenceOffset;\n\t\t\tconst endIndex = referenceValueSize - referenceOffset;\n\t\t\treferenceValue = referenceTrack.values.slice( startIndex, endIndex );\n\n\t\t} else if ( referenceTime >= referenceTrack.times[ lastIndex ] ) {\n\n\t\t\t// Reference frame is after the last keyframe, so just use the last keyframe\n\t\t\tconst startIndex = lastIndex * referenceValueSize + referenceOffset;\n\t\t\tconst endIndex = startIndex + referenceValueSize - referenceOffset;\n\t\t\treferenceValue = referenceTrack.values.slice( startIndex, endIndex );\n\n\t\t} else {\n\n\t\t\t// Interpolate to the reference value\n\t\t\tconst interpolant = referenceTrack.createInterpolant();\n\t\t\tconst startIndex = referenceOffset;\n\t\t\tconst endIndex = referenceValueSize - referenceOffset;\n\t\t\tinterpolant.evaluate( referenceTime );\n\t\t\treferenceValue = interpolant.resultBuffer.slice( startIndex, endIndex );\n\n\t\t}\n\n\t\t// Conjugate the quaternion\n\t\tif ( referenceTrackType === 'quaternion' ) {\n\n\t\t\tconst referenceQuat = new Quaternion().fromArray( referenceValue ).normalize().conjugate();\n\t\t\treferenceQuat.toArray( referenceValue );\n\n\t\t}\n\n\t\t// Subtract the reference value from all of the track values\n\n\t\tconst numTimes = targetTrack.times.length;\n\t\tfor ( let j = 0; j < numTimes; ++ j ) {\n\n\t\t\tconst valueStart = j * targetValueSize + targetOffset;\n\n\t\t\tif ( referenceTrackType === 'quaternion' ) {\n\n\t\t\t\t// Multiply the conjugate for quaternion track types\n\t\t\t\tQuaternion.multiplyQuaternionsFlat(\n\t\t\t\t\ttargetTrack.values,\n\t\t\t\t\tvalueStart,\n\t\t\t\t\treferenceValue,\n\t\t\t\t\t0,\n\t\t\t\t\ttargetTrack.values,\n\t\t\t\t\tvalueStart\n\t\t\t\t);\n\n\t\t\t} else {\n\n\t\t\t\tconst valueEnd = targetValueSize - targetOffset * 2;\n\n\t\t\t\t// Subtract each value for all other numeric track types\n\t\t\t\tfor ( let k = 0; k < valueEnd; ++ k ) {\n\n\t\t\t\t\ttargetTrack.values[ valueStart + k ] -= referenceValue[ k ];\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\ttargetClip.blendMode = AdditiveAnimationBlendMode;\n\n\treturn targetClip;\n\n}\n\nconst AnimationUtils = {\n\tconvertArray: convertArray,\n\tisTypedArray: isTypedArray,\n\tgetKeyframeOrder: getKeyframeOrder,\n\tsortedArray: sortedArray,\n\tflattenJSON: flattenJSON,\n\tsubclip: subclip,\n\tmakeClipAdditive: makeClipAdditive\n};\n\n/**\n * Abstract base class of interpolants over parametric samples.\n *\n * The parameter domain is one dimensional, typically the time or a path\n * along a curve defined by the data.\n *\n * The sample values can have any dimensionality and derived classes may\n * apply special interpretations to the data.\n *\n * This class provides the interval seek in a Template Method, deferring\n * the actual interpolation to derived classes.\n *\n * Time complexity is O(1) for linear access crossing at most two points\n * and O(log N) for random access, where N is the number of positions.\n *\n * References:\n *\n * \t\thttp://www.oodesign.com/template-method-pattern.html\n *\n */\n\nclass Interpolant {\n\n\tconstructor( parameterPositions, sampleValues, sampleSize, resultBuffer ) {\n\n\t\tthis.parameterPositions = parameterPositions;\n\t\tthis._cachedIndex = 0;\n\n\t\tthis.resultBuffer = resultBuffer !== undefined ?\n\t\t\tresultBuffer : new sampleValues.constructor( sampleSize );\n\t\tthis.sampleValues = sampleValues;\n\t\tthis.valueSize = sampleSize;\n\n\t\tthis.settings = null;\n\t\tthis.DefaultSettings_ = {};\n\n\t}\n\n\tevaluate( t ) {\n\n\t\tconst pp = this.parameterPositions;\n\t\tlet i1 = this._cachedIndex,\n\t\t\tt1 = pp[ i1 ],\n\t\t\tt0 = pp[ i1 - 1 ];\n\n\t\tvalidate_interval: {\n\n\t\t\tseek: {\n\n\t\t\t\tlet right;\n\n\t\t\t\tlinear_scan: {\n\n\t\t\t\t\t//- See http://jsperf.com/comparison-to-undefined/3\n\t\t\t\t\t//- slower code:\n\t\t\t\t\t//-\n\t\t\t\t\t//- \t\t\t\tif ( t >= t1 || t1 === undefined ) {\n\t\t\t\t\tforward_scan: if ( ! ( t < t1 ) ) {\n\n\t\t\t\t\t\tfor ( let giveUpAt = i1 + 2; ; ) {\n\n\t\t\t\t\t\t\tif ( t1 === undefined ) {\n\n\t\t\t\t\t\t\t\tif ( t < t0 ) break forward_scan;\n\n\t\t\t\t\t\t\t\t// after end\n\n\t\t\t\t\t\t\t\ti1 = pp.length;\n\t\t\t\t\t\t\t\tthis._cachedIndex = i1;\n\t\t\t\t\t\t\t\treturn this.copySampleValue_( i1 - 1 );\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\tif ( i1 === giveUpAt ) break; // this loop\n\n\t\t\t\t\t\t\tt0 = t1;\n\t\t\t\t\t\t\tt1 = pp[ ++ i1 ];\n\n\t\t\t\t\t\t\tif ( t < t1 ) {\n\n\t\t\t\t\t\t\t\t// we have arrived at the sought interval\n\t\t\t\t\t\t\t\tbreak seek;\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t// prepare binary search on the right side of the index\n\t\t\t\t\t\tright = pp.length;\n\t\t\t\t\t\tbreak linear_scan;\n\n\t\t\t\t\t}\n\n\t\t\t\t\t//- slower code:\n\t\t\t\t\t//-\t\t\t\t\tif ( t < t0 || t0 === undefined ) {\n\t\t\t\t\tif ( ! ( t >= t0 ) ) {\n\n\t\t\t\t\t\t// looping?\n\n\t\t\t\t\t\tconst t1global = pp[ 1 ];\n\n\t\t\t\t\t\tif ( t < t1global ) {\n\n\t\t\t\t\t\t\ti1 = 2; // + 1, using the scan for the details\n\t\t\t\t\t\t\tt0 = t1global;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t// linear reverse scan\n\n\t\t\t\t\t\tfor ( let giveUpAt = i1 - 2; ; ) {\n\n\t\t\t\t\t\t\tif ( t0 === undefined ) {\n\n\t\t\t\t\t\t\t\t// before start\n\n\t\t\t\t\t\t\t\tthis._cachedIndex = 0;\n\t\t\t\t\t\t\t\treturn this.copySampleValue_( 0 );\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\tif ( i1 === giveUpAt ) break; // this loop\n\n\t\t\t\t\t\t\tt1 = t0;\n\t\t\t\t\t\t\tt0 = pp[ -- i1 - 1 ];\n\n\t\t\t\t\t\t\tif ( t >= t0 ) {\n\n\t\t\t\t\t\t\t\t// we have arrived at the sought interval\n\t\t\t\t\t\t\t\tbreak seek;\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t// prepare binary search on the left side of the index\n\t\t\t\t\t\tright = i1;\n\t\t\t\t\t\ti1 = 0;\n\t\t\t\t\t\tbreak linear_scan;\n\n\t\t\t\t\t}\n\n\t\t\t\t\t// the interval is valid\n\n\t\t\t\t\tbreak validate_interval;\n\n\t\t\t\t} // linear scan\n\n\t\t\t\t// binary search\n\n\t\t\t\twhile ( i1 < right ) {\n\n\t\t\t\t\tconst mid = ( i1 + right ) >>> 1;\n\n\t\t\t\t\tif ( t < pp[ mid ] ) {\n\n\t\t\t\t\t\tright = mid;\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\ti1 = mid + 1;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tt1 = pp[ i1 ];\n\t\t\t\tt0 = pp[ i1 - 1 ];\n\n\t\t\t\t// check boundary cases, again\n\n\t\t\t\tif ( t0 === undefined ) {\n\n\t\t\t\t\tthis._cachedIndex = 0;\n\t\t\t\t\treturn this.copySampleValue_( 0 );\n\n\t\t\t\t}\n\n\t\t\t\tif ( t1 === undefined ) {\n\n\t\t\t\t\ti1 = pp.length;\n\t\t\t\t\tthis._cachedIndex = i1;\n\t\t\t\t\treturn this.copySampleValue_( i1 - 1 );\n\n\t\t\t\t}\n\n\t\t\t} // seek\n\n\t\t\tthis._cachedIndex = i1;\n\n\t\t\tthis.intervalChanged_( i1, t0, t1 );\n\n\t\t} // validate_interval\n\n\t\treturn this.interpolate_( i1, t0, t, t1 );\n\n\t}\n\n\tgetSettings_() {\n\n\t\treturn this.settings || this.DefaultSettings_;\n\n\t}\n\n\tcopySampleValue_( index ) {\n\n\t\t// copies a sample value to the result buffer\n\n\t\tconst result = this.resultBuffer,\n\t\t\tvalues = this.sampleValues,\n\t\t\tstride = this.valueSize,\n\t\t\toffset = index * stride;\n\n\t\tfor ( let i = 0; i !== stride; ++ i ) {\n\n\t\t\tresult[ i ] = values[ offset + i ];\n\n\t\t}\n\n\t\treturn result;\n\n\t}\n\n\t// Template methods for derived classes:\n\n\tinterpolate_( /* i1, t0, t, t1 */ ) {\n\n\t\tthrow new Error( 'call to abstract method' );\n\t\t// implementations shall return this.resultBuffer\n\n\t}\n\n\tintervalChanged_( /* i1, t0, t1 */ ) {\n\n\t\t// empty\n\n\t}\n\n}\n\n/**\n * Fast and simple cubic spline interpolant.\n *\n * It was derived from a Hermitian construction setting the first derivative\n * at each sample position to the linear slope between neighboring positions\n * over their parameter interval.\n */\n\nclass CubicInterpolant extends Interpolant {\n\n\tconstructor( parameterPositions, sampleValues, sampleSize, resultBuffer ) {\n\n\t\tsuper( parameterPositions, sampleValues, sampleSize, resultBuffer );\n\n\t\tthis._weightPrev = - 0;\n\t\tthis._offsetPrev = - 0;\n\t\tthis._weightNext = - 0;\n\t\tthis._offsetNext = - 0;\n\n\t\tthis.DefaultSettings_ = {\n\n\t\t\tendingStart: ZeroCurvatureEnding,\n\t\t\tendingEnd: ZeroCurvatureEnding\n\n\t\t};\n\n\t}\n\n\tintervalChanged_( i1, t0, t1 ) {\n\n\t\tconst pp = this.parameterPositions;\n\t\tlet iPrev = i1 - 2,\n\t\t\tiNext = i1 + 1,\n\n\t\t\ttPrev = pp[ iPrev ],\n\t\t\ttNext = pp[ iNext ];\n\n\t\tif ( tPrev === undefined ) {\n\n\t\t\tswitch ( this.getSettings_().endingStart ) {\n\n\t\t\t\tcase ZeroSlopeEnding:\n\n\t\t\t\t\t// f'(t0) = 0\n\t\t\t\t\tiPrev = i1;\n\t\t\t\t\ttPrev = 2 * t0 - t1;\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase WrapAroundEnding:\n\n\t\t\t\t\t// use the other end of the curve\n\t\t\t\t\tiPrev = pp.length - 2;\n\t\t\t\t\ttPrev = t0 + pp[ iPrev ] - pp[ iPrev + 1 ];\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tdefault: // ZeroCurvatureEnding\n\n\t\t\t\t\t// f''(t0) = 0 a.k.a. Natural Spline\n\t\t\t\t\tiPrev = i1;\n\t\t\t\t\ttPrev = t1;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( tNext === undefined ) {\n\n\t\t\tswitch ( this.getSettings_().endingEnd ) {\n\n\t\t\t\tcase ZeroSlopeEnding:\n\n\t\t\t\t\t// f'(tN) = 0\n\t\t\t\t\tiNext = i1;\n\t\t\t\t\ttNext = 2 * t1 - t0;\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase WrapAroundEnding:\n\n\t\t\t\t\t// use the other end of the curve\n\t\t\t\t\tiNext = 1;\n\t\t\t\t\ttNext = t1 + pp[ 1 ] - pp[ 0 ];\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tdefault: // ZeroCurvatureEnding\n\n\t\t\t\t\t// f''(tN) = 0, a.k.a. Natural Spline\n\t\t\t\t\tiNext = i1 - 1;\n\t\t\t\t\ttNext = t0;\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst halfDt = ( t1 - t0 ) * 0.5,\n\t\t\tstride = this.valueSize;\n\n\t\tthis._weightPrev = halfDt / ( t0 - tPrev );\n\t\tthis._weightNext = halfDt / ( tNext - t1 );\n\t\tthis._offsetPrev = iPrev * stride;\n\t\tthis._offsetNext = iNext * stride;\n\n\t}\n\n\tinterpolate_( i1, t0, t, t1 ) {\n\n\t\tconst result = this.resultBuffer,\n\t\t\tvalues = this.sampleValues,\n\t\t\tstride = this.valueSize,\n\n\t\t\to1 = i1 * stride,\t\to0 = o1 - stride,\n\t\t\toP = this._offsetPrev, \toN = this._offsetNext,\n\t\t\twP = this._weightPrev,\twN = this._weightNext,\n\n\t\t\tp = ( t - t0 ) / ( t1 - t0 ),\n\t\t\tpp = p * p,\n\t\t\tppp = pp * p;\n\n\t\t// evaluate polynomials\n\n\t\tconst sP = - wP * ppp + 2 * wP * pp - wP * p;\n\t\tconst s0 = ( 1 + wP ) * ppp + ( - 1.5 - 2 * wP ) * pp + ( - 0.5 + wP ) * p + 1;\n\t\tconst s1 = ( - 1 - wN ) * ppp + ( 1.5 + wN ) * pp + 0.5 * p;\n\t\tconst sN = wN * ppp - wN * pp;\n\n\t\t// combine data linearly\n\n\t\tfor ( let i = 0; i !== stride; ++ i ) {\n\n\t\t\tresult[ i ] =\n\t\t\t\t\tsP * values[ oP + i ] +\n\t\t\t\t\ts0 * values[ o0 + i ] +\n\t\t\t\t\ts1 * values[ o1 + i ] +\n\t\t\t\t\tsN * values[ oN + i ];\n\n\t\t}\n\n\t\treturn result;\n\n\t}\n\n}\n\nclass LinearInterpolant extends Interpolant {\n\n\tconstructor( parameterPositions, sampleValues, sampleSize, resultBuffer ) {\n\n\t\tsuper( parameterPositions, sampleValues, sampleSize, resultBuffer );\n\n\t}\n\n\tinterpolate_( i1, t0, t, t1 ) {\n\n\t\tconst result = this.resultBuffer,\n\t\t\tvalues = this.sampleValues,\n\t\t\tstride = this.valueSize,\n\n\t\t\toffset1 = i1 * stride,\n\t\t\toffset0 = offset1 - stride,\n\n\t\t\tweight1 = ( t - t0 ) / ( t1 - t0 ),\n\t\t\tweight0 = 1 - weight1;\n\n\t\tfor ( let i = 0; i !== stride; ++ i ) {\n\n\t\t\tresult[ i ] =\n\t\t\t\t\tvalues[ offset0 + i ] * weight0 +\n\t\t\t\t\tvalues[ offset1 + i ] * weight1;\n\n\t\t}\n\n\t\treturn result;\n\n\t}\n\n}\n\n/**\n *\n * Interpolant that evaluates to the sample value at the position preceding\n * the parameter.\n */\n\nclass DiscreteInterpolant extends Interpolant {\n\n\tconstructor( parameterPositions, sampleValues, sampleSize, resultBuffer ) {\n\n\t\tsuper( parameterPositions, sampleValues, sampleSize, resultBuffer );\n\n\t}\n\n\tinterpolate_( i1 /*, t0, t, t1 */ ) {\n\n\t\treturn this.copySampleValue_( i1 - 1 );\n\n\t}\n\n}\n\nclass KeyframeTrack {\n\n\tconstructor( name, times, values, interpolation ) {\n\n\t\tif ( name === undefined ) throw new Error( 'THREE.KeyframeTrack: track name is undefined' );\n\t\tif ( times === undefined || times.length === 0 ) throw new Error( 'THREE.KeyframeTrack: no keyframes in track named ' + name );\n\n\t\tthis.name = name;\n\n\t\tthis.times = convertArray( times, this.TimeBufferType );\n\t\tthis.values = convertArray( values, this.ValueBufferType );\n\n\t\tthis.setInterpolation( interpolation || this.DefaultInterpolation );\n\n\t}\n\n\t// Serialization (in static context, because of constructor invocation\n\t// and automatic invocation of .toJSON):\n\n\tstatic toJSON( track ) {\n\n\t\tconst trackType = track.constructor;\n\n\t\tlet json;\n\n\t\t// derived classes can define a static toJSON method\n\t\tif ( trackType.toJSON !== this.toJSON ) {\n\n\t\t\tjson = trackType.toJSON( track );\n\n\t\t} else {\n\n\t\t\t// by default, we assume the data can be serialized as-is\n\t\t\tjson = {\n\n\t\t\t\t'name': track.name,\n\t\t\t\t'times': convertArray( track.times, Array ),\n\t\t\t\t'values': convertArray( track.values, Array )\n\n\t\t\t};\n\n\t\t\tconst interpolation = track.getInterpolation();\n\n\t\t\tif ( interpolation !== track.DefaultInterpolation ) {\n\n\t\t\t\tjson.interpolation = interpolation;\n\n\t\t\t}\n\n\t\t}\n\n\t\tjson.type = track.ValueTypeName; // mandatory\n\n\t\treturn json;\n\n\t}\n\n\tInterpolantFactoryMethodDiscrete( result ) {\n\n\t\treturn new DiscreteInterpolant( this.times, this.values, this.getValueSize(), result );\n\n\t}\n\n\tInterpolantFactoryMethodLinear( result ) {\n\n\t\treturn new LinearInterpolant( this.times, this.values, this.getValueSize(), result );\n\n\t}\n\n\tInterpolantFactoryMethodSmooth( result ) {\n\n\t\treturn new CubicInterpolant( this.times, this.values, this.getValueSize(), result );\n\n\t}\n\n\tsetInterpolation( interpolation ) {\n\n\t\tlet factoryMethod;\n\n\t\tswitch ( interpolation ) {\n\n\t\t\tcase InterpolateDiscrete:\n\n\t\t\t\tfactoryMethod = this.InterpolantFactoryMethodDiscrete;\n\n\t\t\t\tbreak;\n\n\t\t\tcase InterpolateLinear:\n\n\t\t\t\tfactoryMethod = this.InterpolantFactoryMethodLinear;\n\n\t\t\t\tbreak;\n\n\t\t\tcase InterpolateSmooth:\n\n\t\t\t\tfactoryMethod = this.InterpolantFactoryMethodSmooth;\n\n\t\t\t\tbreak;\n\n\t\t}\n\n\t\tif ( factoryMethod === undefined ) {\n\n\t\t\tconst message = 'unsupported interpolation for ' +\n\t\t\t\tthis.ValueTypeName + ' keyframe track named ' + this.name;\n\n\t\t\tif ( this.createInterpolant === undefined ) {\n\n\t\t\t\t// fall back to default, unless the default itself is messed up\n\t\t\t\tif ( interpolation !== this.DefaultInterpolation ) {\n\n\t\t\t\t\tthis.setInterpolation( this.DefaultInterpolation );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tthrow new Error( message ); // fatal, in this case\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tconsole.warn( 'THREE.KeyframeTrack:', message );\n\t\t\treturn this;\n\n\t\t}\n\n\t\tthis.createInterpolant = factoryMethod;\n\n\t\treturn this;\n\n\t}\n\n\tgetInterpolation() {\n\n\t\tswitch ( this.createInterpolant ) {\n\n\t\t\tcase this.InterpolantFactoryMethodDiscrete:\n\n\t\t\t\treturn InterpolateDiscrete;\n\n\t\t\tcase this.InterpolantFactoryMethodLinear:\n\n\t\t\t\treturn InterpolateLinear;\n\n\t\t\tcase this.InterpolantFactoryMethodSmooth:\n\n\t\t\t\treturn InterpolateSmooth;\n\n\t\t}\n\n\t}\n\n\tgetValueSize() {\n\n\t\treturn this.values.length / this.times.length;\n\n\t}\n\n\t// move all keyframes either forwards or backwards in time\n\tshift( timeOffset ) {\n\n\t\tif ( timeOffset !== 0.0 ) {\n\n\t\t\tconst times = this.times;\n\n\t\t\tfor ( let i = 0, n = times.length; i !== n; ++ i ) {\n\n\t\t\t\ttimes[ i ] += timeOffset;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\t// scale all keyframe times by a factor (useful for frame <-> seconds conversions)\n\tscale( timeScale ) {\n\n\t\tif ( timeScale !== 1.0 ) {\n\n\t\t\tconst times = this.times;\n\n\t\t\tfor ( let i = 0, n = times.length; i !== n; ++ i ) {\n\n\t\t\t\ttimes[ i ] *= timeScale;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\t// removes keyframes before and after animation without changing any values within the range [startTime, endTime].\n\t// IMPORTANT: We do not shift around keys to the start of the track time, because for interpolated keys this will change their values\n\ttrim( startTime, endTime ) {\n\n\t\tconst times = this.times,\n\t\t\tnKeys = times.length;\n\n\t\tlet from = 0,\n\t\t\tto = nKeys - 1;\n\n\t\twhile ( from !== nKeys && times[ from ] < startTime ) {\n\n\t\t\t++ from;\n\n\t\t}\n\n\t\twhile ( to !== - 1 && times[ to ] > endTime ) {\n\n\t\t\t-- to;\n\n\t\t}\n\n\t\t++ to; // inclusive -> exclusive bound\n\n\t\tif ( from !== 0 || to !== nKeys ) {\n\n\t\t\t// empty tracks are forbidden, so keep at least one keyframe\n\t\t\tif ( from >= to ) {\n\n\t\t\t\tto = Math.max( to, 1 );\n\t\t\t\tfrom = to - 1;\n\n\t\t\t}\n\n\t\t\tconst stride = this.getValueSize();\n\t\t\tthis.times = times.slice( from, to );\n\t\t\tthis.values = this.values.slice( from * stride, to * stride );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\t// ensure we do not get a GarbageInGarbageOut situation, make sure tracks are at least minimally viable\n\tvalidate() {\n\n\t\tlet valid = true;\n\n\t\tconst valueSize = this.getValueSize();\n\t\tif ( valueSize - Math.floor( valueSize ) !== 0 ) {\n\n\t\t\tconsole.error( 'THREE.KeyframeTrack: Invalid value size in track.', this );\n\t\t\tvalid = false;\n\n\t\t}\n\n\t\tconst times = this.times,\n\t\t\tvalues = this.values,\n\n\t\t\tnKeys = times.length;\n\n\t\tif ( nKeys === 0 ) {\n\n\t\t\tconsole.error( 'THREE.KeyframeTrack: Track is empty.', this );\n\t\t\tvalid = false;\n\n\t\t}\n\n\t\tlet prevTime = null;\n\n\t\tfor ( let i = 0; i !== nKeys; i ++ ) {\n\n\t\t\tconst currTime = times[ i ];\n\n\t\t\tif ( typeof currTime === 'number' && isNaN( currTime ) ) {\n\n\t\t\t\tconsole.error( 'THREE.KeyframeTrack: Time is not a valid number.', this, i, currTime );\n\t\t\t\tvalid = false;\n\t\t\t\tbreak;\n\n\t\t\t}\n\n\t\t\tif ( prevTime !== null && prevTime > currTime ) {\n\n\t\t\t\tconsole.error( 'THREE.KeyframeTrack: Out of order keys.', this, i, currTime, prevTime );\n\t\t\t\tvalid = false;\n\t\t\t\tbreak;\n\n\t\t\t}\n\n\t\t\tprevTime = currTime;\n\n\t\t}\n\n\t\tif ( values !== undefined ) {\n\n\t\t\tif ( isTypedArray( values ) ) {\n\n\t\t\t\tfor ( let i = 0, n = values.length; i !== n; ++ i ) {\n\n\t\t\t\t\tconst value = values[ i ];\n\n\t\t\t\t\tif ( isNaN( value ) ) {\n\n\t\t\t\t\t\tconsole.error( 'THREE.KeyframeTrack: Value is not a valid number.', this, i, value );\n\t\t\t\t\t\tvalid = false;\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn valid;\n\n\t}\n\n\t// removes equivalent sequential keys as common in morph target sequences\n\t// (0,0,0,0,1,1,1,0,0,0,0,0,0,0) --> (0,0,1,1,0,0)\n\toptimize() {\n\n\t\t// times or values may be shared with other tracks, so overwriting is unsafe\n\t\tconst times = this.times.slice(),\n\t\t\tvalues = this.values.slice(),\n\t\t\tstride = this.getValueSize(),\n\n\t\t\tsmoothInterpolation = this.getInterpolation() === InterpolateSmooth,\n\n\t\t\tlastIndex = times.length - 1;\n\n\t\tlet writeIndex = 1;\n\n\t\tfor ( let i = 1; i < lastIndex; ++ i ) {\n\n\t\t\tlet keep = false;\n\n\t\t\tconst time = times[ i ];\n\t\t\tconst timeNext = times[ i + 1 ];\n\n\t\t\t// remove adjacent keyframes scheduled at the same time\n\n\t\t\tif ( time !== timeNext && ( i !== 1 || time !== times[ 0 ] ) ) {\n\n\t\t\t\tif ( ! smoothInterpolation ) {\n\n\t\t\t\t\t// remove unnecessary keyframes same as their neighbors\n\n\t\t\t\t\tconst offset = i * stride,\n\t\t\t\t\t\toffsetP = offset - stride,\n\t\t\t\t\t\toffsetN = offset + stride;\n\n\t\t\t\t\tfor ( let j = 0; j !== stride; ++ j ) {\n\n\t\t\t\t\t\tconst value = values[ offset + j ];\n\n\t\t\t\t\t\tif ( value !== values[ offsetP + j ] ||\n\t\t\t\t\t\t\tvalue !== values[ offsetN + j ] ) {\n\n\t\t\t\t\t\t\tkeep = true;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\tkeep = true;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// in-place compaction\n\n\t\t\tif ( keep ) {\n\n\t\t\t\tif ( i !== writeIndex ) {\n\n\t\t\t\t\ttimes[ writeIndex ] = times[ i ];\n\n\t\t\t\t\tconst readOffset = i * stride,\n\t\t\t\t\t\twriteOffset = writeIndex * stride;\n\n\t\t\t\t\tfor ( let j = 0; j !== stride; ++ j ) {\n\n\t\t\t\t\t\tvalues[ writeOffset + j ] = values[ readOffset + j ];\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\t++ writeIndex;\n\n\t\t\t}\n\n\t\t}\n\n\t\t// flush last keyframe (compaction looks ahead)\n\n\t\tif ( lastIndex > 0 ) {\n\n\t\t\ttimes[ writeIndex ] = times[ lastIndex ];\n\n\t\t\tfor ( let readOffset = lastIndex * stride, writeOffset = writeIndex * stride, j = 0; j !== stride; ++ j ) {\n\n\t\t\t\tvalues[ writeOffset + j ] = values[ readOffset + j ];\n\n\t\t\t}\n\n\t\t\t++ writeIndex;\n\n\t\t}\n\n\t\tif ( writeIndex !== times.length ) {\n\n\t\t\tthis.times = times.slice( 0, writeIndex );\n\t\t\tthis.values = values.slice( 0, writeIndex * stride );\n\n\t\t} else {\n\n\t\t\tthis.times = times;\n\t\t\tthis.values = values;\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\tconst times = this.times.slice();\n\t\tconst values = this.values.slice();\n\n\t\tconst TypedKeyframeTrack = this.constructor;\n\t\tconst track = new TypedKeyframeTrack( this.name, times, values );\n\n\t\t// Interpolant argument to constructor is not saved, so copy the factory method directly.\n\t\ttrack.createInterpolant = this.createInterpolant;\n\n\t\treturn track;\n\n\t}\n\n}\n\nKeyframeTrack.prototype.TimeBufferType = Float32Array;\nKeyframeTrack.prototype.ValueBufferType = Float32Array;\nKeyframeTrack.prototype.DefaultInterpolation = InterpolateLinear;\n\n/**\n * A Track of Boolean keyframe values.\n */\nclass BooleanKeyframeTrack extends KeyframeTrack {\n\n\t// No interpolation parameter because only InterpolateDiscrete is valid.\n\tconstructor( name, times, values ) {\n\n\t\tsuper( name, times, values );\n\n\t}\n\n}\n\nBooleanKeyframeTrack.prototype.ValueTypeName = 'bool';\nBooleanKeyframeTrack.prototype.ValueBufferType = Array;\nBooleanKeyframeTrack.prototype.DefaultInterpolation = InterpolateDiscrete;\nBooleanKeyframeTrack.prototype.InterpolantFactoryMethodLinear = undefined;\nBooleanKeyframeTrack.prototype.InterpolantFactoryMethodSmooth = undefined;\n\n/**\n * A Track of keyframe values that represent color.\n */\nclass ColorKeyframeTrack extends KeyframeTrack {}\n\nColorKeyframeTrack.prototype.ValueTypeName = 'color';\n\n/**\n * A Track of numeric keyframe values.\n */\nclass NumberKeyframeTrack extends KeyframeTrack {}\n\nNumberKeyframeTrack.prototype.ValueTypeName = 'number';\n\n/**\n * Spherical linear unit quaternion interpolant.\n */\n\nclass QuaternionLinearInterpolant extends Interpolant {\n\n\tconstructor( parameterPositions, sampleValues, sampleSize, resultBuffer ) {\n\n\t\tsuper( parameterPositions, sampleValues, sampleSize, resultBuffer );\n\n\t}\n\n\tinterpolate_( i1, t0, t, t1 ) {\n\n\t\tconst result = this.resultBuffer,\n\t\t\tvalues = this.sampleValues,\n\t\t\tstride = this.valueSize,\n\n\t\t\talpha = ( t - t0 ) / ( t1 - t0 );\n\n\t\tlet offset = i1 * stride;\n\n\t\tfor ( let end = offset + stride; offset !== end; offset += 4 ) {\n\n\t\t\tQuaternion.slerpFlat( result, 0, values, offset - stride, values, offset, alpha );\n\n\t\t}\n\n\t\treturn result;\n\n\t}\n\n}\n\n/**\n * A Track of quaternion keyframe values.\n */\nclass QuaternionKeyframeTrack extends KeyframeTrack {\n\n\tInterpolantFactoryMethodLinear( result ) {\n\n\t\treturn new QuaternionLinearInterpolant( this.times, this.values, this.getValueSize(), result );\n\n\t}\n\n}\n\nQuaternionKeyframeTrack.prototype.ValueTypeName = 'quaternion';\n// ValueBufferType is inherited\n// DefaultInterpolation is inherited;\nQuaternionKeyframeTrack.prototype.InterpolantFactoryMethodSmooth = undefined;\n\n/**\n * A Track that interpolates Strings\n */\nclass StringKeyframeTrack extends KeyframeTrack {\n\n\t// No interpolation parameter because only InterpolateDiscrete is valid.\n\tconstructor( name, times, values ) {\n\n\t\tsuper( name, times, values );\n\n\t}\n\n}\n\nStringKeyframeTrack.prototype.ValueTypeName = 'string';\nStringKeyframeTrack.prototype.ValueBufferType = Array;\nStringKeyframeTrack.prototype.DefaultInterpolation = InterpolateDiscrete;\nStringKeyframeTrack.prototype.InterpolantFactoryMethodLinear = undefined;\nStringKeyframeTrack.prototype.InterpolantFactoryMethodSmooth = undefined;\n\n/**\n * A Track of vectored keyframe values.\n */\nclass VectorKeyframeTrack extends KeyframeTrack {}\n\nVectorKeyframeTrack.prototype.ValueTypeName = 'vector';\n\nclass AnimationClip {\n\n\tconstructor( name = '', duration = - 1, tracks = [], blendMode = NormalAnimationBlendMode ) {\n\n\t\tthis.name = name;\n\t\tthis.tracks = tracks;\n\t\tthis.duration = duration;\n\t\tthis.blendMode = blendMode;\n\n\t\tthis.uuid = generateUUID();\n\n\t\t// this means it should figure out its duration by scanning the tracks\n\t\tif ( this.duration < 0 ) {\n\n\t\t\tthis.resetDuration();\n\n\t\t}\n\n\t}\n\n\n\tstatic parse( json ) {\n\n\t\tconst tracks = [],\n\t\t\tjsonTracks = json.tracks,\n\t\t\tframeTime = 1.0 / ( json.fps || 1.0 );\n\n\t\tfor ( let i = 0, n = jsonTracks.length; i !== n; ++ i ) {\n\n\t\t\ttracks.push( parseKeyframeTrack( jsonTracks[ i ] ).scale( frameTime ) );\n\n\t\t}\n\n\t\tconst clip = new this( json.name, json.duration, tracks, json.blendMode );\n\t\tclip.uuid = json.uuid;\n\n\t\treturn clip;\n\n\t}\n\n\tstatic toJSON( clip ) {\n\n\t\tconst tracks = [],\n\t\t\tclipTracks = clip.tracks;\n\n\t\tconst json = {\n\n\t\t\t'name': clip.name,\n\t\t\t'duration': clip.duration,\n\t\t\t'tracks': tracks,\n\t\t\t'uuid': clip.uuid,\n\t\t\t'blendMode': clip.blendMode\n\n\t\t};\n\n\t\tfor ( let i = 0, n = clipTracks.length; i !== n; ++ i ) {\n\n\t\t\ttracks.push( KeyframeTrack.toJSON( clipTracks[ i ] ) );\n\n\t\t}\n\n\t\treturn json;\n\n\t}\n\n\tstatic CreateFromMorphTargetSequence( name, morphTargetSequence, fps, noLoop ) {\n\n\t\tconst numMorphTargets = morphTargetSequence.length;\n\t\tconst tracks = [];\n\n\t\tfor ( let i = 0; i < numMorphTargets; i ++ ) {\n\n\t\t\tlet times = [];\n\t\t\tlet values = [];\n\n\t\t\ttimes.push(\n\t\t\t\t( i + numMorphTargets - 1 ) % numMorphTargets,\n\t\t\t\ti,\n\t\t\t\t( i + 1 ) % numMorphTargets );\n\n\t\t\tvalues.push( 0, 1, 0 );\n\n\t\t\tconst order = getKeyframeOrder( times );\n\t\t\ttimes = sortedArray( times, 1, order );\n\t\t\tvalues = sortedArray( values, 1, order );\n\n\t\t\t// if there is a key at the first frame, duplicate it as the\n\t\t\t// last frame as well for perfect loop.\n\t\t\tif ( ! noLoop && times[ 0 ] === 0 ) {\n\n\t\t\t\ttimes.push( numMorphTargets );\n\t\t\t\tvalues.push( values[ 0 ] );\n\n\t\t\t}\n\n\t\t\ttracks.push(\n\t\t\t\tnew NumberKeyframeTrack(\n\t\t\t\t\t'.morphTargetInfluences[' + morphTargetSequence[ i ].name + ']',\n\t\t\t\t\ttimes, values\n\t\t\t\t).scale( 1.0 / fps ) );\n\n\t\t}\n\n\t\treturn new this( name, - 1, tracks );\n\n\t}\n\n\tstatic findByName( objectOrClipArray, name ) {\n\n\t\tlet clipArray = objectOrClipArray;\n\n\t\tif ( ! Array.isArray( objectOrClipArray ) ) {\n\n\t\t\tconst o = objectOrClipArray;\n\t\t\tclipArray = o.geometry && o.geometry.animations || o.animations;\n\n\t\t}\n\n\t\tfor ( let i = 0; i < clipArray.length; i ++ ) {\n\n\t\t\tif ( clipArray[ i ].name === name ) {\n\n\t\t\t\treturn clipArray[ i ];\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn null;\n\n\t}\n\n\tstatic CreateClipsFromMorphTargetSequences( morphTargets, fps, noLoop ) {\n\n\t\tconst animationToMorphTargets = {};\n\n\t\t// tested with https://regex101.com/ on trick sequences\n\t\t// such flamingo_flyA_003, flamingo_run1_003, crdeath0059\n\t\tconst pattern = /^([\\w-]*?)([\\d]+)$/;\n\n\t\t// sort morph target names into animation groups based\n\t\t// patterns like Walk_001, Walk_002, Run_001, Run_002\n\t\tfor ( let i = 0, il = morphTargets.length; i < il; i ++ ) {\n\n\t\t\tconst morphTarget = morphTargets[ i ];\n\t\t\tconst parts = morphTarget.name.match( pattern );\n\n\t\t\tif ( parts && parts.length > 1 ) {\n\n\t\t\t\tconst name = parts[ 1 ];\n\n\t\t\t\tlet animationMorphTargets = animationToMorphTargets[ name ];\n\n\t\t\t\tif ( ! animationMorphTargets ) {\n\n\t\t\t\t\tanimationToMorphTargets[ name ] = animationMorphTargets = [];\n\n\t\t\t\t}\n\n\t\t\t\tanimationMorphTargets.push( morphTarget );\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst clips = [];\n\n\t\tfor ( const name in animationToMorphTargets ) {\n\n\t\t\tclips.push( this.CreateFromMorphTargetSequence( name, animationToMorphTargets[ name ], fps, noLoop ) );\n\n\t\t}\n\n\t\treturn clips;\n\n\t}\n\n\t// parse the animation.hierarchy format\n\tstatic parseAnimation( animation, bones ) {\n\n\t\tif ( ! animation ) {\n\n\t\t\tconsole.error( 'THREE.AnimationClip: No animation in JSONLoader data.' );\n\t\t\treturn null;\n\n\t\t}\n\n\t\tconst addNonemptyTrack = function ( trackType, trackName, animationKeys, propertyName, destTracks ) {\n\n\t\t\t// only return track if there are actually keys.\n\t\t\tif ( animationKeys.length !== 0 ) {\n\n\t\t\t\tconst times = [];\n\t\t\t\tconst values = [];\n\n\t\t\t\tflattenJSON( animationKeys, times, values, propertyName );\n\n\t\t\t\t// empty keys are filtered out, so check again\n\t\t\t\tif ( times.length !== 0 ) {\n\n\t\t\t\t\tdestTracks.push( new trackType( trackName, times, values ) );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t};\n\n\t\tconst tracks = [];\n\n\t\tconst clipName = animation.name || 'default';\n\t\tconst fps = animation.fps || 30;\n\t\tconst blendMode = animation.blendMode;\n\n\t\t// automatic length determination in AnimationClip.\n\t\tlet duration = animation.length || - 1;\n\n\t\tconst hierarchyTracks = animation.hierarchy || [];\n\n\t\tfor ( let h = 0; h < hierarchyTracks.length; h ++ ) {\n\n\t\t\tconst animationKeys = hierarchyTracks[ h ].keys;\n\n\t\t\t// skip empty tracks\n\t\t\tif ( ! animationKeys || animationKeys.length === 0 ) continue;\n\n\t\t\t// process morph targets\n\t\t\tif ( animationKeys[ 0 ].morphTargets ) {\n\n\t\t\t\t// figure out all morph targets used in this track\n\t\t\t\tconst morphTargetNames = {};\n\n\t\t\t\tlet k;\n\n\t\t\t\tfor ( k = 0; k < animationKeys.length; k ++ ) {\n\n\t\t\t\t\tif ( animationKeys[ k ].morphTargets ) {\n\n\t\t\t\t\t\tfor ( let m = 0; m < animationKeys[ k ].morphTargets.length; m ++ ) {\n\n\t\t\t\t\t\t\tmorphTargetNames[ animationKeys[ k ].morphTargets[ m ] ] = - 1;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\t// create a track for each morph target with all zero\n\t\t\t\t// morphTargetInfluences except for the keys in which\n\t\t\t\t// the morphTarget is named.\n\t\t\t\tfor ( const morphTargetName in morphTargetNames ) {\n\n\t\t\t\t\tconst times = [];\n\t\t\t\t\tconst values = [];\n\n\t\t\t\t\tfor ( let m = 0; m !== animationKeys[ k ].morphTargets.length; ++ m ) {\n\n\t\t\t\t\t\tconst animationKey = animationKeys[ k ];\n\n\t\t\t\t\t\ttimes.push( animationKey.time );\n\t\t\t\t\t\tvalues.push( ( animationKey.morphTarget === morphTargetName ) ? 1 : 0 );\n\n\t\t\t\t\t}\n\n\t\t\t\t\ttracks.push( new NumberKeyframeTrack( '.morphTargetInfluence[' + morphTargetName + ']', times, values ) );\n\n\t\t\t\t}\n\n\t\t\t\tduration = morphTargetNames.length * fps;\n\n\t\t\t} else {\n\n\t\t\t\t// ...assume skeletal animation\n\n\t\t\t\tconst boneName = '.bones[' + bones[ h ].name + ']';\n\n\t\t\t\taddNonemptyTrack(\n\t\t\t\t\tVectorKeyframeTrack, boneName + '.position',\n\t\t\t\t\tanimationKeys, 'pos', tracks );\n\n\t\t\t\taddNonemptyTrack(\n\t\t\t\t\tQuaternionKeyframeTrack, boneName + '.quaternion',\n\t\t\t\t\tanimationKeys, 'rot', tracks );\n\n\t\t\t\taddNonemptyTrack(\n\t\t\t\t\tVectorKeyframeTrack, boneName + '.scale',\n\t\t\t\t\tanimationKeys, 'scl', tracks );\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( tracks.length === 0 ) {\n\n\t\t\treturn null;\n\n\t\t}\n\n\t\tconst clip = new this( clipName, duration, tracks, blendMode );\n\n\t\treturn clip;\n\n\t}\n\n\tresetDuration() {\n\n\t\tconst tracks = this.tracks;\n\t\tlet duration = 0;\n\n\t\tfor ( let i = 0, n = tracks.length; i !== n; ++ i ) {\n\n\t\t\tconst track = this.tracks[ i ];\n\n\t\t\tduration = Math.max( duration, track.times[ track.times.length - 1 ] );\n\n\t\t}\n\n\t\tthis.duration = duration;\n\n\t\treturn this;\n\n\t}\n\n\ttrim() {\n\n\t\tfor ( let i = 0; i < this.tracks.length; i ++ ) {\n\n\t\t\tthis.tracks[ i ].trim( 0, this.duration );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tvalidate() {\n\n\t\tlet valid = true;\n\n\t\tfor ( let i = 0; i < this.tracks.length; i ++ ) {\n\n\t\t\tvalid = valid && this.tracks[ i ].validate();\n\n\t\t}\n\n\t\treturn valid;\n\n\t}\n\n\toptimize() {\n\n\t\tfor ( let i = 0; i < this.tracks.length; i ++ ) {\n\n\t\t\tthis.tracks[ i ].optimize();\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\tconst tracks = [];\n\n\t\tfor ( let i = 0; i < this.tracks.length; i ++ ) {\n\n\t\t\ttracks.push( this.tracks[ i ].clone() );\n\n\t\t}\n\n\t\treturn new this.constructor( this.name, this.duration, tracks, this.blendMode );\n\n\t}\n\n\ttoJSON() {\n\n\t\treturn this.constructor.toJSON( this );\n\n\t}\n\n}\n\nfunction getTrackTypeForValueTypeName( typeName ) {\n\n\tswitch ( typeName.toLowerCase() ) {\n\n\t\tcase 'scalar':\n\t\tcase 'double':\n\t\tcase 'float':\n\t\tcase 'number':\n\t\tcase 'integer':\n\n\t\t\treturn NumberKeyframeTrack;\n\n\t\tcase 'vector':\n\t\tcase 'vector2':\n\t\tcase 'vector3':\n\t\tcase 'vector4':\n\n\t\t\treturn VectorKeyframeTrack;\n\n\t\tcase 'color':\n\n\t\t\treturn ColorKeyframeTrack;\n\n\t\tcase 'quaternion':\n\n\t\t\treturn QuaternionKeyframeTrack;\n\n\t\tcase 'bool':\n\t\tcase 'boolean':\n\n\t\t\treturn BooleanKeyframeTrack;\n\n\t\tcase 'string':\n\n\t\t\treturn StringKeyframeTrack;\n\n\t}\n\n\tthrow new Error( 'THREE.KeyframeTrack: Unsupported typeName: ' + typeName );\n\n}\n\nfunction parseKeyframeTrack( json ) {\n\n\tif ( json.type === undefined ) {\n\n\t\tthrow new Error( 'THREE.KeyframeTrack: track type undefined, can not parse' );\n\n\t}\n\n\tconst trackType = getTrackTypeForValueTypeName( json.type );\n\n\tif ( json.times === undefined ) {\n\n\t\tconst times = [], values = [];\n\n\t\tflattenJSON( json.keys, times, values, 'value' );\n\n\t\tjson.times = times;\n\t\tjson.values = values;\n\n\t}\n\n\t// derived classes can define a static parse method\n\tif ( trackType.parse !== undefined ) {\n\n\t\treturn trackType.parse( json );\n\n\t} else {\n\n\t\t// by default, we assume a constructor compatible with the base\n\t\treturn new trackType( json.name, json.times, json.values, json.interpolation );\n\n\t}\n\n}\n\nconst Cache = {\n\n\tenabled: false,\n\n\tfiles: {},\n\n\tadd: function ( key, file ) {\n\n\t\tif ( this.enabled === false ) return;\n\n\t\t// console.log( 'THREE.Cache', 'Adding key:', key );\n\n\t\tthis.files[ key ] = file;\n\n\t},\n\n\tget: function ( key ) {\n\n\t\tif ( this.enabled === false ) return;\n\n\t\t// console.log( 'THREE.Cache', 'Checking key:', key );\n\n\t\treturn this.files[ key ];\n\n\t},\n\n\tremove: function ( key ) {\n\n\t\tdelete this.files[ key ];\n\n\t},\n\n\tclear: function () {\n\n\t\tthis.files = {};\n\n\t}\n\n};\n\nclass LoadingManager {\n\n\tconstructor( onLoad, onProgress, onError ) {\n\n\t\tconst scope = this;\n\n\t\tlet isLoading = false;\n\t\tlet itemsLoaded = 0;\n\t\tlet itemsTotal = 0;\n\t\tlet urlModifier = undefined;\n\t\tconst handlers = [];\n\n\t\t// Refer to #5689 for the reason why we don't set .onStart\n\t\t// in the constructor\n\n\t\tthis.onStart = undefined;\n\t\tthis.onLoad = onLoad;\n\t\tthis.onProgress = onProgress;\n\t\tthis.onError = onError;\n\n\t\tthis.itemStart = function ( url ) {\n\n\t\t\titemsTotal ++;\n\n\t\t\tif ( isLoading === false ) {\n\n\t\t\t\tif ( scope.onStart !== undefined ) {\n\n\t\t\t\t\tscope.onStart( url, itemsLoaded, itemsTotal );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tisLoading = true;\n\n\t\t};\n\n\t\tthis.itemEnd = function ( url ) {\n\n\t\t\titemsLoaded ++;\n\n\t\t\tif ( scope.onProgress !== undefined ) {\n\n\t\t\t\tscope.onProgress( url, itemsLoaded, itemsTotal );\n\n\t\t\t}\n\n\t\t\tif ( itemsLoaded === itemsTotal ) {\n\n\t\t\t\tisLoading = false;\n\n\t\t\t\tif ( scope.onLoad !== undefined ) {\n\n\t\t\t\t\tscope.onLoad();\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t};\n\n\t\tthis.itemError = function ( url ) {\n\n\t\t\tif ( scope.onError !== undefined ) {\n\n\t\t\t\tscope.onError( url );\n\n\t\t\t}\n\n\t\t};\n\n\t\tthis.resolveURL = function ( url ) {\n\n\t\t\tif ( urlModifier ) {\n\n\t\t\t\treturn urlModifier( url );\n\n\t\t\t}\n\n\t\t\treturn url;\n\n\t\t};\n\n\t\tthis.setURLModifier = function ( transform ) {\n\n\t\t\turlModifier = transform;\n\n\t\t\treturn this;\n\n\t\t};\n\n\t\tthis.addHandler = function ( regex, loader ) {\n\n\t\t\thandlers.push( regex, loader );\n\n\t\t\treturn this;\n\n\t\t};\n\n\t\tthis.removeHandler = function ( regex ) {\n\n\t\t\tconst index = handlers.indexOf( regex );\n\n\t\t\tif ( index !== - 1 ) {\n\n\t\t\t\thandlers.splice( index, 2 );\n\n\t\t\t}\n\n\t\t\treturn this;\n\n\t\t};\n\n\t\tthis.getHandler = function ( file ) {\n\n\t\t\tfor ( let i = 0, l = handlers.length; i < l; i += 2 ) {\n\n\t\t\t\tconst regex = handlers[ i ];\n\t\t\t\tconst loader = handlers[ i + 1 ];\n\n\t\t\t\tif ( regex.global ) regex.lastIndex = 0; // see #17920\n\n\t\t\t\tif ( regex.test( file ) ) {\n\n\t\t\t\t\treturn loader;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\treturn null;\n\n\t\t};\n\n\t}\n\n}\n\nconst DefaultLoadingManager = /*@__PURE__*/ new LoadingManager();\n\nclass Loader {\n\n\tconstructor( manager ) {\n\n\t\tthis.manager = ( manager !== undefined ) ? manager : DefaultLoadingManager;\n\n\t\tthis.crossOrigin = 'anonymous';\n\t\tthis.withCredentials = false;\n\t\tthis.path = '';\n\t\tthis.resourcePath = '';\n\t\tthis.requestHeader = {};\n\n\t}\n\n\tload( /* url, onLoad, onProgress, onError */ ) {}\n\n\tloadAsync( url, onProgress ) {\n\n\t\tconst scope = this;\n\n\t\treturn new Promise( function ( resolve, reject ) {\n\n\t\t\tscope.load( url, resolve, onProgress, reject );\n\n\t\t} );\n\n\t}\n\n\tparse( /* data */ ) {}\n\n\tsetCrossOrigin( crossOrigin ) {\n\n\t\tthis.crossOrigin = crossOrigin;\n\t\treturn this;\n\n\t}\n\n\tsetWithCredentials( value ) {\n\n\t\tthis.withCredentials = value;\n\t\treturn this;\n\n\t}\n\n\tsetPath( path ) {\n\n\t\tthis.path = path;\n\t\treturn this;\n\n\t}\n\n\tsetResourcePath( resourcePath ) {\n\n\t\tthis.resourcePath = resourcePath;\n\t\treturn this;\n\n\t}\n\n\tsetRequestHeader( requestHeader ) {\n\n\t\tthis.requestHeader = requestHeader;\n\t\treturn this;\n\n\t}\n\n}\n\nLoader.DEFAULT_MATERIAL_NAME = '__DEFAULT';\n\nconst loading = {};\n\nclass HttpError extends Error {\n\n\tconstructor( message, response ) {\n\n\t\tsuper( message );\n\t\tthis.response = response;\n\n\t}\n\n}\n\nclass FileLoader extends Loader {\n\n\tconstructor( manager ) {\n\n\t\tsuper( manager );\n\n\t}\n\n\tload( url, onLoad, onProgress, onError ) {\n\n\t\tif ( url === undefined ) url = '';\n\n\t\tif ( this.path !== undefined ) url = this.path + url;\n\n\t\turl = this.manager.resolveURL( url );\n\n\t\tconst cached = Cache.get( url );\n\n\t\tif ( cached !== undefined ) {\n\n\t\t\tthis.manager.itemStart( url );\n\n\t\t\tsetTimeout( () => {\n\n\t\t\t\tif ( onLoad ) onLoad( cached );\n\n\t\t\t\tthis.manager.itemEnd( url );\n\n\t\t\t}, 0 );\n\n\t\t\treturn cached;\n\n\t\t}\n\n\t\t// Check if request is duplicate\n\n\t\tif ( loading[ url ] !== undefined ) {\n\n\t\t\tloading[ url ].push( {\n\n\t\t\t\tonLoad: onLoad,\n\t\t\t\tonProgress: onProgress,\n\t\t\t\tonError: onError\n\n\t\t\t} );\n\n\t\t\treturn;\n\n\t\t}\n\n\t\t// Initialise array for duplicate requests\n\t\tloading[ url ] = [];\n\n\t\tloading[ url ].push( {\n\t\t\tonLoad: onLoad,\n\t\t\tonProgress: onProgress,\n\t\t\tonError: onError,\n\t\t} );\n\n\t\t// create request\n\t\tconst req = new Request( url, {\n\t\t\theaders: new Headers( this.requestHeader ),\n\t\t\tcredentials: this.withCredentials ? 'include' : 'same-origin',\n\t\t\t// An abort controller could be added within a future PR\n\t\t} );\n\n\t\t// record states ( avoid data race )\n\t\tconst mimeType = this.mimeType;\n\t\tconst responseType = this.responseType;\n\n\t\t// start the fetch\n\t\tfetch( req )\n\t\t\t.then( response => {\n\n\t\t\t\tif ( response.status === 200 || response.status === 0 ) {\n\n\t\t\t\t\t// Some browsers return HTTP Status 0 when using non-http protocol\n\t\t\t\t\t// e.g. 'file://' or 'data://'. Handle as success.\n\n\t\t\t\t\tif ( response.status === 0 ) {\n\n\t\t\t\t\t\tconsole.warn( 'THREE.FileLoader: HTTP Status 0 received.' );\n\n\t\t\t\t\t}\n\n\t\t\t\t\t// Workaround: Checking if response.body === undefined for Alipay browser #23548\n\n\t\t\t\t\tif ( typeof ReadableStream === 'undefined' || response.body === undefined || response.body.getReader === undefined ) {\n\n\t\t\t\t\t\treturn response;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tconst callbacks = loading[ url ];\n\t\t\t\t\tconst reader = response.body.getReader();\n\n\t\t\t\t\t// Nginx needs X-File-Size check\n\t\t\t\t\t// https://serverfault.com/questions/482875/why-does-nginx-remove-content-length-header-for-chunked-content\n\t\t\t\t\tconst contentLength = response.headers.get( 'X-File-Size' ) || response.headers.get( 'Content-Length' );\n\t\t\t\t\tconst total = contentLength ? parseInt( contentLength ) : 0;\n\t\t\t\t\tconst lengthComputable = total !== 0;\n\t\t\t\t\tlet loaded = 0;\n\n\t\t\t\t\t// periodically read data into the new stream tracking while download progress\n\t\t\t\t\tconst stream = new ReadableStream( {\n\t\t\t\t\t\tstart( controller ) {\n\n\t\t\t\t\t\t\treadData();\n\n\t\t\t\t\t\t\tfunction readData() {\n\n\t\t\t\t\t\t\t\treader.read().then( ( { done, value } ) => {\n\n\t\t\t\t\t\t\t\t\tif ( done ) {\n\n\t\t\t\t\t\t\t\t\t\tcontroller.close();\n\n\t\t\t\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t\t\t\tloaded += value.byteLength;\n\n\t\t\t\t\t\t\t\t\t\tconst event = new ProgressEvent( 'progress', { lengthComputable, loaded, total } );\n\t\t\t\t\t\t\t\t\t\tfor ( let i = 0, il = callbacks.length; i < il; i ++ ) {\n\n\t\t\t\t\t\t\t\t\t\t\tconst callback = callbacks[ i ];\n\t\t\t\t\t\t\t\t\t\t\tif ( callback.onProgress ) callback.onProgress( event );\n\n\t\t\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t\t\tcontroller.enqueue( value );\n\t\t\t\t\t\t\t\t\t\treadData();\n\n\t\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t}, ( e ) => {\n\n\t\t\t\t\t\t\t\t\tcontroller.error( e );\n\n\t\t\t\t\t\t\t\t} );\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t} );\n\n\t\t\t\t\treturn new Response( stream );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tthrow new HttpError( `fetch for \"${response.url}\" responded with ${response.status}: ${response.statusText}`, response );\n\n\t\t\t\t}\n\n\t\t\t} )\n\t\t\t.then( response => {\n\n\t\t\t\tswitch ( responseType ) {\n\n\t\t\t\t\tcase 'arraybuffer':\n\n\t\t\t\t\t\treturn response.arrayBuffer();\n\n\t\t\t\t\tcase 'blob':\n\n\t\t\t\t\t\treturn response.blob();\n\n\t\t\t\t\tcase 'document':\n\n\t\t\t\t\t\treturn response.text()\n\t\t\t\t\t\t\t.then( text => {\n\n\t\t\t\t\t\t\t\tconst parser = new DOMParser();\n\t\t\t\t\t\t\t\treturn parser.parseFromString( text, mimeType );\n\n\t\t\t\t\t\t\t} );\n\n\t\t\t\t\tcase 'json':\n\n\t\t\t\t\t\treturn response.json();\n\n\t\t\t\t\tdefault:\n\n\t\t\t\t\t\tif ( mimeType === undefined ) {\n\n\t\t\t\t\t\t\treturn response.text();\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t// sniff encoding\n\t\t\t\t\t\t\tconst re = /charset=\"?([^;\"\\s]*)\"?/i;\n\t\t\t\t\t\t\tconst exec = re.exec( mimeType );\n\t\t\t\t\t\t\tconst label = exec && exec[ 1 ] ? exec[ 1 ].toLowerCase() : undefined;\n\t\t\t\t\t\t\tconst decoder = new TextDecoder( label );\n\t\t\t\t\t\t\treturn response.arrayBuffer().then( ab => decoder.decode( ab ) );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t} )\n\t\t\t.then( data => {\n\n\t\t\t\t// Add to cache only on HTTP success, so that we do not cache\n\t\t\t\t// error response bodies as proper responses to requests.\n\t\t\t\tCache.add( url, data );\n\n\t\t\t\tconst callbacks = loading[ url ];\n\t\t\t\tdelete loading[ url ];\n\n\t\t\t\tfor ( let i = 0, il = callbacks.length; i < il; i ++ ) {\n\n\t\t\t\t\tconst callback = callbacks[ i ];\n\t\t\t\t\tif ( callback.onLoad ) callback.onLoad( data );\n\n\t\t\t\t}\n\n\t\t\t} )\n\t\t\t.catch( err => {\n\n\t\t\t\t// Abort errors and other errors are handled the same\n\n\t\t\t\tconst callbacks = loading[ url ];\n\n\t\t\t\tif ( callbacks === undefined ) {\n\n\t\t\t\t\t// When onLoad was called and url was deleted in `loading`\n\t\t\t\t\tthis.manager.itemError( url );\n\t\t\t\t\tthrow err;\n\n\t\t\t\t}\n\n\t\t\t\tdelete loading[ url ];\n\n\t\t\t\tfor ( let i = 0, il = callbacks.length; i < il; i ++ ) {\n\n\t\t\t\t\tconst callback = callbacks[ i ];\n\t\t\t\t\tif ( callback.onError ) callback.onError( err );\n\n\t\t\t\t}\n\n\t\t\t\tthis.manager.itemError( url );\n\n\t\t\t} )\n\t\t\t.finally( () => {\n\n\t\t\t\tthis.manager.itemEnd( url );\n\n\t\t\t} );\n\n\t\tthis.manager.itemStart( url );\n\n\t}\n\n\tsetResponseType( value ) {\n\n\t\tthis.responseType = value;\n\t\treturn this;\n\n\t}\n\n\tsetMimeType( value ) {\n\n\t\tthis.mimeType = value;\n\t\treturn this;\n\n\t}\n\n}\n\nclass AnimationLoader extends Loader {\n\n\tconstructor( manager ) {\n\n\t\tsuper( manager );\n\n\t}\n\n\tload( url, onLoad, onProgress, onError ) {\n\n\t\tconst scope = this;\n\n\t\tconst loader = new FileLoader( this.manager );\n\t\tloader.setPath( this.path );\n\t\tloader.setRequestHeader( this.requestHeader );\n\t\tloader.setWithCredentials( this.withCredentials );\n\t\tloader.load( url, function ( text ) {\n\n\t\t\ttry {\n\n\t\t\t\tonLoad( scope.parse( JSON.parse( text ) ) );\n\n\t\t\t} catch ( e ) {\n\n\t\t\t\tif ( onError ) {\n\n\t\t\t\t\tonError( e );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tconsole.error( e );\n\n\t\t\t\t}\n\n\t\t\t\tscope.manager.itemError( url );\n\n\t\t\t}\n\n\t\t}, onProgress, onError );\n\n\t}\n\n\tparse( json ) {\n\n\t\tconst animations = [];\n\n\t\tfor ( let i = 0; i < json.length; i ++ ) {\n\n\t\t\tconst clip = AnimationClip.parse( json[ i ] );\n\n\t\t\tanimations.push( clip );\n\n\t\t}\n\n\t\treturn animations;\n\n\t}\n\n}\n\n/**\n * Abstract Base class to block based textures loader (dds, pvr, ...)\n *\n * Sub classes have to implement the parse() method which will be used in load().\n */\n\nclass CompressedTextureLoader extends Loader {\n\n\tconstructor( manager ) {\n\n\t\tsuper( manager );\n\n\t}\n\n\tload( url, onLoad, onProgress, onError ) {\n\n\t\tconst scope = this;\n\n\t\tconst images = [];\n\n\t\tconst texture = new CompressedTexture();\n\n\t\tconst loader = new FileLoader( this.manager );\n\t\tloader.setPath( this.path );\n\t\tloader.setResponseType( 'arraybuffer' );\n\t\tloader.setRequestHeader( this.requestHeader );\n\t\tloader.setWithCredentials( scope.withCredentials );\n\n\t\tlet loaded = 0;\n\n\t\tfunction loadTexture( i ) {\n\n\t\t\tloader.load( url[ i ], function ( buffer ) {\n\n\t\t\t\tconst texDatas = scope.parse( buffer, true );\n\n\t\t\t\timages[ i ] = {\n\t\t\t\t\twidth: texDatas.width,\n\t\t\t\t\theight: texDatas.height,\n\t\t\t\t\tformat: texDatas.format,\n\t\t\t\t\tmipmaps: texDatas.mipmaps\n\t\t\t\t};\n\n\t\t\t\tloaded += 1;\n\n\t\t\t\tif ( loaded === 6 ) {\n\n\t\t\t\t\tif ( texDatas.mipmapCount === 1 ) texture.minFilter = LinearFilter;\n\n\t\t\t\t\ttexture.image = images;\n\t\t\t\t\ttexture.format = texDatas.format;\n\t\t\t\t\ttexture.needsUpdate = true;\n\n\t\t\t\t\tif ( onLoad ) onLoad( texture );\n\n\t\t\t\t}\n\n\t\t\t}, onProgress, onError );\n\n\t\t}\n\n\t\tif ( Array.isArray( url ) ) {\n\n\t\t\tfor ( let i = 0, il = url.length; i < il; ++ i ) {\n\n\t\t\t\tloadTexture( i );\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\t// compressed cubemap texture stored in a single DDS file\n\n\t\t\tloader.load( url, function ( buffer ) {\n\n\t\t\t\tconst texDatas = scope.parse( buffer, true );\n\n\t\t\t\tif ( texDatas.isCubemap ) {\n\n\t\t\t\t\tconst faces = texDatas.mipmaps.length / texDatas.mipmapCount;\n\n\t\t\t\t\tfor ( let f = 0; f < faces; f ++ ) {\n\n\t\t\t\t\t\timages[ f ] = { mipmaps: [] };\n\n\t\t\t\t\t\tfor ( let i = 0; i < texDatas.mipmapCount; i ++ ) {\n\n\t\t\t\t\t\t\timages[ f ].mipmaps.push( texDatas.mipmaps[ f * texDatas.mipmapCount + i ] );\n\t\t\t\t\t\t\timages[ f ].format = texDatas.format;\n\t\t\t\t\t\t\timages[ f ].width = texDatas.width;\n\t\t\t\t\t\t\timages[ f ].height = texDatas.height;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t\ttexture.image = images;\n\n\t\t\t\t} else {\n\n\t\t\t\t\ttexture.image.width = texDatas.width;\n\t\t\t\t\ttexture.image.height = texDatas.height;\n\t\t\t\t\ttexture.mipmaps = texDatas.mipmaps;\n\n\t\t\t\t}\n\n\t\t\t\tif ( texDatas.mipmapCount === 1 ) {\n\n\t\t\t\t\ttexture.minFilter = LinearFilter;\n\n\t\t\t\t}\n\n\t\t\t\ttexture.format = texDatas.format;\n\t\t\t\ttexture.needsUpdate = true;\n\n\t\t\t\tif ( onLoad ) onLoad( texture );\n\n\t\t\t}, onProgress, onError );\n\n\t\t}\n\n\t\treturn texture;\n\n\t}\n\n}\n\nclass ImageLoader extends Loader {\n\n\tconstructor( manager ) {\n\n\t\tsuper( manager );\n\n\t}\n\n\tload( url, onLoad, onProgress, onError ) {\n\n\t\tif ( this.path !== undefined ) url = this.path + url;\n\n\t\turl = this.manager.resolveURL( url );\n\n\t\tconst scope = this;\n\n\t\tconst cached = Cache.get( url );\n\n\t\tif ( cached !== undefined ) {\n\n\t\t\tscope.manager.itemStart( url );\n\n\t\t\tsetTimeout( function () {\n\n\t\t\t\tif ( onLoad ) onLoad( cached );\n\n\t\t\t\tscope.manager.itemEnd( url );\n\n\t\t\t}, 0 );\n\n\t\t\treturn cached;\n\n\t\t}\n\n\t\tconst image = createElementNS( 'img' );\n\n\t\tfunction onImageLoad() {\n\n\t\t\tremoveEventListeners();\n\n\t\t\tCache.add( url, this );\n\n\t\t\tif ( onLoad ) onLoad( this );\n\n\t\t\tscope.manager.itemEnd( url );\n\n\t\t}\n\n\t\tfunction onImageError( event ) {\n\n\t\t\tremoveEventListeners();\n\n\t\t\tif ( onError ) onError( event );\n\n\t\t\tscope.manager.itemError( url );\n\t\t\tscope.manager.itemEnd( url );\n\n\t\t}\n\n\t\tfunction removeEventListeners() {\n\n\t\t\timage.removeEventListener( 'load', onImageLoad, false );\n\t\t\timage.removeEventListener( 'error', onImageError, false );\n\n\t\t}\n\n\t\timage.addEventListener( 'load', onImageLoad, false );\n\t\timage.addEventListener( 'error', onImageError, false );\n\n\t\tif ( url.slice( 0, 5 ) !== 'data:' ) {\n\n\t\t\tif ( this.crossOrigin !== undefined ) image.crossOrigin = this.crossOrigin;\n\n\t\t}\n\n\t\tscope.manager.itemStart( url );\n\n\t\timage.src = url;\n\n\t\treturn image;\n\n\t}\n\n}\n\nclass CubeTextureLoader extends Loader {\n\n\tconstructor( manager ) {\n\n\t\tsuper( manager );\n\n\t}\n\n\tload( urls, onLoad, onProgress, onError ) {\n\n\t\tconst texture = new CubeTexture();\n\t\ttexture.colorSpace = SRGBColorSpace;\n\n\t\tconst loader = new ImageLoader( this.manager );\n\t\tloader.setCrossOrigin( this.crossOrigin );\n\t\tloader.setPath( this.path );\n\n\t\tlet loaded = 0;\n\n\t\tfunction loadTexture( i ) {\n\n\t\t\tloader.load( urls[ i ], function ( image ) {\n\n\t\t\t\ttexture.images[ i ] = image;\n\n\t\t\t\tloaded ++;\n\n\t\t\t\tif ( loaded === 6 ) {\n\n\t\t\t\t\ttexture.needsUpdate = true;\n\n\t\t\t\t\tif ( onLoad ) onLoad( texture );\n\n\t\t\t\t}\n\n\t\t\t}, undefined, onError );\n\n\t\t}\n\n\t\tfor ( let i = 0; i < urls.length; ++ i ) {\n\n\t\t\tloadTexture( i );\n\n\t\t}\n\n\t\treturn texture;\n\n\t}\n\n}\n\n/**\n * Abstract Base class to load generic binary textures formats (rgbe, hdr, ...)\n *\n * Sub classes have to implement the parse() method which will be used in load().\n */\n\nclass DataTextureLoader extends Loader {\n\n\tconstructor( manager ) {\n\n\t\tsuper( manager );\n\n\t}\n\n\tload( url, onLoad, onProgress, onError ) {\n\n\t\tconst scope = this;\n\n\t\tconst texture = new DataTexture();\n\n\t\tconst loader = new FileLoader( this.manager );\n\t\tloader.setResponseType( 'arraybuffer' );\n\t\tloader.setRequestHeader( this.requestHeader );\n\t\tloader.setPath( this.path );\n\t\tloader.setWithCredentials( scope.withCredentials );\n\t\tloader.load( url, function ( buffer ) {\n\n\t\t\tlet texData;\n\n\t\t\ttry {\n\n\t\t\t\ttexData = scope.parse( buffer );\n\n\t\t\t} catch ( error ) {\n\n\t\t\t\tif ( onError !== undefined ) {\n\n\t\t\t\t\tonError( error );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tconsole.error( error );\n\t\t\t\t\treturn;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tif ( texData.image !== undefined ) {\n\n\t\t\t\ttexture.image = texData.image;\n\n\t\t\t} else if ( texData.data !== undefined ) {\n\n\t\t\t\ttexture.image.width = texData.width;\n\t\t\t\ttexture.image.height = texData.height;\n\t\t\t\ttexture.image.data = texData.data;\n\n\t\t\t}\n\n\t\t\ttexture.wrapS = texData.wrapS !== undefined ? texData.wrapS : ClampToEdgeWrapping;\n\t\t\ttexture.wrapT = texData.wrapT !== undefined ? texData.wrapT : ClampToEdgeWrapping;\n\n\t\t\ttexture.magFilter = texData.magFilter !== undefined ? texData.magFilter : LinearFilter;\n\t\t\ttexture.minFilter = texData.minFilter !== undefined ? texData.minFilter : LinearFilter;\n\n\t\t\ttexture.anisotropy = texData.anisotropy !== undefined ? texData.anisotropy : 1;\n\n\t\t\tif ( texData.colorSpace !== undefined ) {\n\n\t\t\t\ttexture.colorSpace = texData.colorSpace;\n\n\t\t\t}\n\n\t\t\tif ( texData.flipY !== undefined ) {\n\n\t\t\t\ttexture.flipY = texData.flipY;\n\n\t\t\t}\n\n\t\t\tif ( texData.format !== undefined ) {\n\n\t\t\t\ttexture.format = texData.format;\n\n\t\t\t}\n\n\t\t\tif ( texData.type !== undefined ) {\n\n\t\t\t\ttexture.type = texData.type;\n\n\t\t\t}\n\n\t\t\tif ( texData.mipmaps !== undefined ) {\n\n\t\t\t\ttexture.mipmaps = texData.mipmaps;\n\t\t\t\ttexture.minFilter = LinearMipmapLinearFilter; // presumably...\n\n\t\t\t}\n\n\t\t\tif ( texData.mipmapCount === 1 ) {\n\n\t\t\t\ttexture.minFilter = LinearFilter;\n\n\t\t\t}\n\n\t\t\tif ( texData.generateMipmaps !== undefined ) {\n\n\t\t\t\ttexture.generateMipmaps = texData.generateMipmaps;\n\n\t\t\t}\n\n\t\t\ttexture.needsUpdate = true;\n\n\t\t\tif ( onLoad ) onLoad( texture, texData );\n\n\t\t}, onProgress, onError );\n\n\n\t\treturn texture;\n\n\t}\n\n}\n\nclass TextureLoader extends Loader {\n\n\tconstructor( manager ) {\n\n\t\tsuper( manager );\n\n\t}\n\n\tload( url, onLoad, onProgress, onError ) {\n\n\t\tconst texture = new Texture();\n\n\t\tconst loader = new ImageLoader( this.manager );\n\t\tloader.setCrossOrigin( this.crossOrigin );\n\t\tloader.setPath( this.path );\n\n\t\tloader.load( url, function ( image ) {\n\n\t\t\ttexture.image = image;\n\t\t\ttexture.needsUpdate = true;\n\n\t\t\tif ( onLoad !== undefined ) {\n\n\t\t\t\tonLoad( texture );\n\n\t\t\t}\n\n\t\t}, onProgress, onError );\n\n\t\treturn texture;\n\n\t}\n\n}\n\nclass Light extends Object3D {\n\n\tconstructor( color, intensity = 1 ) {\n\n\t\tsuper();\n\n\t\tthis.isLight = true;\n\n\t\tthis.type = 'Light';\n\n\t\tthis.color = new Color( color );\n\t\tthis.intensity = intensity;\n\n\t}\n\n\tdispose() {\n\n\t\t// Empty here in base class; some subclasses override.\n\n\t}\n\n\tcopy( source, recursive ) {\n\n\t\tsuper.copy( source, recursive );\n\n\t\tthis.color.copy( source.color );\n\t\tthis.intensity = source.intensity;\n\n\t\treturn this;\n\n\t}\n\n\ttoJSON( meta ) {\n\n\t\tconst data = super.toJSON( meta );\n\n\t\tdata.object.color = this.color.getHex();\n\t\tdata.object.intensity = this.intensity;\n\n\t\tif ( this.groundColor !== undefined ) data.object.groundColor = this.groundColor.getHex();\n\n\t\tif ( this.distance !== undefined ) data.object.distance = this.distance;\n\t\tif ( this.angle !== undefined ) data.object.angle = this.angle;\n\t\tif ( this.decay !== undefined ) data.object.decay = this.decay;\n\t\tif ( this.penumbra !== undefined ) data.object.penumbra = this.penumbra;\n\n\t\tif ( this.shadow !== undefined ) data.object.shadow = this.shadow.toJSON();\n\n\t\treturn data;\n\n\t}\n\n}\n\nclass HemisphereLight extends Light {\n\n\tconstructor( skyColor, groundColor, intensity ) {\n\n\t\tsuper( skyColor, intensity );\n\n\t\tthis.isHemisphereLight = true;\n\n\t\tthis.type = 'HemisphereLight';\n\n\t\tthis.position.copy( Object3D.DEFAULT_UP );\n\t\tthis.updateMatrix();\n\n\t\tthis.groundColor = new Color( groundColor );\n\n\t}\n\n\tcopy( source, recursive ) {\n\n\t\tsuper.copy( source, recursive );\n\n\t\tthis.groundColor.copy( source.groundColor );\n\n\t\treturn this;\n\n\t}\n\n}\n\nconst _projScreenMatrix$1 = /*@__PURE__*/ new Matrix4();\nconst _lightPositionWorld$1 = /*@__PURE__*/ new Vector3();\nconst _lookTarget$1 = /*@__PURE__*/ new Vector3();\n\nclass LightShadow {\n\n\tconstructor( camera ) {\n\n\t\tthis.camera = camera;\n\n\t\tthis.bias = 0;\n\t\tthis.normalBias = 0;\n\t\tthis.radius = 1;\n\t\tthis.blurSamples = 8;\n\n\t\tthis.mapSize = new Vector2( 512, 512 );\n\n\t\tthis.map = null;\n\t\tthis.mapPass = null;\n\t\tthis.matrix = new Matrix4();\n\n\t\tthis.autoUpdate = true;\n\t\tthis.needsUpdate = false;\n\n\t\tthis._frustum = new Frustum();\n\t\tthis._frameExtents = new Vector2( 1, 1 );\n\n\t\tthis._viewportCount = 1;\n\n\t\tthis._viewports = [\n\n\t\t\tnew Vector4( 0, 0, 1, 1 )\n\n\t\t];\n\n\t}\n\n\tgetViewportCount() {\n\n\t\treturn this._viewportCount;\n\n\t}\n\n\tgetFrustum() {\n\n\t\treturn this._frustum;\n\n\t}\n\n\tupdateMatrices( light ) {\n\n\t\tconst shadowCamera = this.camera;\n\t\tconst shadowMatrix = this.matrix;\n\n\t\t_lightPositionWorld$1.setFromMatrixPosition( light.matrixWorld );\n\t\tshadowCamera.position.copy( _lightPositionWorld$1 );\n\n\t\t_lookTarget$1.setFromMatrixPosition( light.target.matrixWorld );\n\t\tshadowCamera.lookAt( _lookTarget$1 );\n\t\tshadowCamera.updateMatrixWorld();\n\n\t\t_projScreenMatrix$1.multiplyMatrices( shadowCamera.projectionMatrix, shadowCamera.matrixWorldInverse );\n\t\tthis._frustum.setFromProjectionMatrix( _projScreenMatrix$1 );\n\n\t\tshadowMatrix.set(\n\t\t\t0.5, 0.0, 0.0, 0.5,\n\t\t\t0.0, 0.5, 0.0, 0.5,\n\t\t\t0.0, 0.0, 0.5, 0.5,\n\t\t\t0.0, 0.0, 0.0, 1.0\n\t\t);\n\n\t\tshadowMatrix.multiply( _projScreenMatrix$1 );\n\n\t}\n\n\tgetViewport( viewportIndex ) {\n\n\t\treturn this._viewports[ viewportIndex ];\n\n\t}\n\n\tgetFrameExtents() {\n\n\t\treturn this._frameExtents;\n\n\t}\n\n\tdispose() {\n\n\t\tif ( this.map ) {\n\n\t\t\tthis.map.dispose();\n\n\t\t}\n\n\t\tif ( this.mapPass ) {\n\n\t\t\tthis.mapPass.dispose();\n\n\t\t}\n\n\t}\n\n\tcopy( source ) {\n\n\t\tthis.camera = source.camera.clone();\n\n\t\tthis.bias = source.bias;\n\t\tthis.radius = source.radius;\n\n\t\tthis.mapSize.copy( source.mapSize );\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n\ttoJSON() {\n\n\t\tconst object = {};\n\n\t\tif ( this.bias !== 0 ) object.bias = this.bias;\n\t\tif ( this.normalBias !== 0 ) object.normalBias = this.normalBias;\n\t\tif ( this.radius !== 1 ) object.radius = this.radius;\n\t\tif ( this.mapSize.x !== 512 || this.mapSize.y !== 512 ) object.mapSize = this.mapSize.toArray();\n\n\t\tobject.camera = this.camera.toJSON( false ).object;\n\t\tdelete object.camera.matrix;\n\n\t\treturn object;\n\n\t}\n\n}\n\nclass SpotLightShadow extends LightShadow {\n\n\tconstructor() {\n\n\t\tsuper( new PerspectiveCamera( 50, 1, 0.5, 500 ) );\n\n\t\tthis.isSpotLightShadow = true;\n\n\t\tthis.focus = 1;\n\n\t}\n\n\tupdateMatrices( light ) {\n\n\t\tconst camera = this.camera;\n\n\t\tconst fov = RAD2DEG * 2 * light.angle * this.focus;\n\t\tconst aspect = this.mapSize.width / this.mapSize.height;\n\t\tconst far = light.distance || camera.far;\n\n\t\tif ( fov !== camera.fov || aspect !== camera.aspect || far !== camera.far ) {\n\n\t\t\tcamera.fov = fov;\n\t\t\tcamera.aspect = aspect;\n\t\t\tcamera.far = far;\n\t\t\tcamera.updateProjectionMatrix();\n\n\t\t}\n\n\t\tsuper.updateMatrices( light );\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.focus = source.focus;\n\n\t\treturn this;\n\n\t}\n\n}\n\nclass SpotLight extends Light {\n\n\tconstructor( color, intensity, distance = 0, angle = Math.PI / 3, penumbra = 0, decay = 2 ) {\n\n\t\tsuper( color, intensity );\n\n\t\tthis.isSpotLight = true;\n\n\t\tthis.type = 'SpotLight';\n\n\t\tthis.position.copy( Object3D.DEFAULT_UP );\n\t\tthis.updateMatrix();\n\n\t\tthis.target = new Object3D();\n\n\t\tthis.distance = distance;\n\t\tthis.angle = angle;\n\t\tthis.penumbra = penumbra;\n\t\tthis.decay = decay;\n\n\t\tthis.map = null;\n\n\t\tthis.shadow = new SpotLightShadow();\n\n\t}\n\n\tget power() {\n\n\t\t// compute the light's luminous power (in lumens) from its intensity (in candela)\n\t\t// by convention for a spotlight, luminous power (lm) = π * luminous intensity (cd)\n\t\treturn this.intensity * Math.PI;\n\n\t}\n\n\tset power( power ) {\n\n\t\t// set the light's intensity (in candela) from the desired luminous power (in lumens)\n\t\tthis.intensity = power / Math.PI;\n\n\t}\n\n\tdispose() {\n\n\t\tthis.shadow.dispose();\n\n\t}\n\n\tcopy( source, recursive ) {\n\n\t\tsuper.copy( source, recursive );\n\n\t\tthis.distance = source.distance;\n\t\tthis.angle = source.angle;\n\t\tthis.penumbra = source.penumbra;\n\t\tthis.decay = source.decay;\n\n\t\tthis.target = source.target.clone();\n\n\t\tthis.shadow = source.shadow.clone();\n\n\t\treturn this;\n\n\t}\n\n}\n\nconst _projScreenMatrix = /*@__PURE__*/ new Matrix4();\nconst _lightPositionWorld = /*@__PURE__*/ new Vector3();\nconst _lookTarget = /*@__PURE__*/ new Vector3();\n\nclass PointLightShadow extends LightShadow {\n\n\tconstructor() {\n\n\t\tsuper( new PerspectiveCamera( 90, 1, 0.5, 500 ) );\n\n\t\tthis.isPointLightShadow = true;\n\n\t\tthis._frameExtents = new Vector2( 4, 2 );\n\n\t\tthis._viewportCount = 6;\n\n\t\tthis._viewports = [\n\t\t\t// These viewports map a cube-map onto a 2D texture with the\n\t\t\t// following orientation:\n\t\t\t//\n\t\t\t// xzXZ\n\t\t\t// y Y\n\t\t\t//\n\t\t\t// X - Positive x direction\n\t\t\t// x - Negative x direction\n\t\t\t// Y - Positive y direction\n\t\t\t// y - Negative y direction\n\t\t\t// Z - Positive z direction\n\t\t\t// z - Negative z direction\n\n\t\t\t// positive X\n\t\t\tnew Vector4( 2, 1, 1, 1 ),\n\t\t\t// negative X\n\t\t\tnew Vector4( 0, 1, 1, 1 ),\n\t\t\t// positive Z\n\t\t\tnew Vector4( 3, 1, 1, 1 ),\n\t\t\t// negative Z\n\t\t\tnew Vector4( 1, 1, 1, 1 ),\n\t\t\t// positive Y\n\t\t\tnew Vector4( 3, 0, 1, 1 ),\n\t\t\t// negative Y\n\t\t\tnew Vector4( 1, 0, 1, 1 )\n\t\t];\n\n\t\tthis._cubeDirections = [\n\t\t\tnew Vector3( 1, 0, 0 ), new Vector3( - 1, 0, 0 ), new Vector3( 0, 0, 1 ),\n\t\t\tnew Vector3( 0, 0, - 1 ), new Vector3( 0, 1, 0 ), new Vector3( 0, - 1, 0 )\n\t\t];\n\n\t\tthis._cubeUps = [\n\t\t\tnew Vector3( 0, 1, 0 ), new Vector3( 0, 1, 0 ), new Vector3( 0, 1, 0 ),\n\t\t\tnew Vector3( 0, 1, 0 ), new Vector3( 0, 0, 1 ),\tnew Vector3( 0, 0, - 1 )\n\t\t];\n\n\t}\n\n\tupdateMatrices( light, viewportIndex = 0 ) {\n\n\t\tconst camera = this.camera;\n\t\tconst shadowMatrix = this.matrix;\n\n\t\tconst far = light.distance || camera.far;\n\n\t\tif ( far !== camera.far ) {\n\n\t\t\tcamera.far = far;\n\t\t\tcamera.updateProjectionMatrix();\n\n\t\t}\n\n\t\t_lightPositionWorld.setFromMatrixPosition( light.matrixWorld );\n\t\tcamera.position.copy( _lightPositionWorld );\n\n\t\t_lookTarget.copy( camera.position );\n\t\t_lookTarget.add( this._cubeDirections[ viewportIndex ] );\n\t\tcamera.up.copy( this._cubeUps[ viewportIndex ] );\n\t\tcamera.lookAt( _lookTarget );\n\t\tcamera.updateMatrixWorld();\n\n\t\tshadowMatrix.makeTranslation( - _lightPositionWorld.x, - _lightPositionWorld.y, - _lightPositionWorld.z );\n\n\t\t_projScreenMatrix.multiplyMatrices( camera.projectionMatrix, camera.matrixWorldInverse );\n\t\tthis._frustum.setFromProjectionMatrix( _projScreenMatrix );\n\n\t}\n\n}\n\nclass PointLight extends Light {\n\n\tconstructor( color, intensity, distance = 0, decay = 2 ) {\n\n\t\tsuper( color, intensity );\n\n\t\tthis.isPointLight = true;\n\n\t\tthis.type = 'PointLight';\n\n\t\tthis.distance = distance;\n\t\tthis.decay = decay;\n\n\t\tthis.shadow = new PointLightShadow();\n\n\t}\n\n\tget power() {\n\n\t\t// compute the light's luminous power (in lumens) from its intensity (in candela)\n\t\t// for an isotropic light source, luminous power (lm) = 4 π luminous intensity (cd)\n\t\treturn this.intensity * 4 * Math.PI;\n\n\t}\n\n\tset power( power ) {\n\n\t\t// set the light's intensity (in candela) from the desired luminous power (in lumens)\n\t\tthis.intensity = power / ( 4 * Math.PI );\n\n\t}\n\n\tdispose() {\n\n\t\tthis.shadow.dispose();\n\n\t}\n\n\tcopy( source, recursive ) {\n\n\t\tsuper.copy( source, recursive );\n\n\t\tthis.distance = source.distance;\n\t\tthis.decay = source.decay;\n\n\t\tthis.shadow = source.shadow.clone();\n\n\t\treturn this;\n\n\t}\n\n}\n\nclass DirectionalLightShadow extends LightShadow {\n\n\tconstructor() {\n\n\t\tsuper( new OrthographicCamera( - 5, 5, 5, - 5, 0.5, 500 ) );\n\n\t\tthis.isDirectionalLightShadow = true;\n\n\t}\n\n}\n\nclass DirectionalLight extends Light {\n\n\tconstructor( color, intensity ) {\n\n\t\tsuper( color, intensity );\n\n\t\tthis.isDirectionalLight = true;\n\n\t\tthis.type = 'DirectionalLight';\n\n\t\tthis.position.copy( Object3D.DEFAULT_UP );\n\t\tthis.updateMatrix();\n\n\t\tthis.target = new Object3D();\n\n\t\tthis.shadow = new DirectionalLightShadow();\n\n\t}\n\n\tdispose() {\n\n\t\tthis.shadow.dispose();\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.target = source.target.clone();\n\t\tthis.shadow = source.shadow.clone();\n\n\t\treturn this;\n\n\t}\n\n}\n\nclass AmbientLight extends Light {\n\n\tconstructor( color, intensity ) {\n\n\t\tsuper( color, intensity );\n\n\t\tthis.isAmbientLight = true;\n\n\t\tthis.type = 'AmbientLight';\n\n\t}\n\n}\n\nclass RectAreaLight extends Light {\n\n\tconstructor( color, intensity, width = 10, height = 10 ) {\n\n\t\tsuper( color, intensity );\n\n\t\tthis.isRectAreaLight = true;\n\n\t\tthis.type = 'RectAreaLight';\n\n\t\tthis.width = width;\n\t\tthis.height = height;\n\n\t}\n\n\tget power() {\n\n\t\t// compute the light's luminous power (in lumens) from its intensity (in nits)\n\t\treturn this.intensity * this.width * this.height * Math.PI;\n\n\t}\n\n\tset power( power ) {\n\n\t\t// set the light's intensity (in nits) from the desired luminous power (in lumens)\n\t\tthis.intensity = power / ( this.width * this.height * Math.PI );\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.width = source.width;\n\t\tthis.height = source.height;\n\n\t\treturn this;\n\n\t}\n\n\ttoJSON( meta ) {\n\n\t\tconst data = super.toJSON( meta );\n\n\t\tdata.object.width = this.width;\n\t\tdata.object.height = this.height;\n\n\t\treturn data;\n\n\t}\n\n}\n\n/**\n * Primary reference:\n * https://graphics.stanford.edu/papers/envmap/envmap.pdf\n *\n * Secondary reference:\n * https://www.ppsloan.org/publications/StupidSH36.pdf\n */\n\n// 3-band SH defined by 9 coefficients\n\nclass SphericalHarmonics3 {\n\n\tconstructor() {\n\n\t\tthis.isSphericalHarmonics3 = true;\n\n\t\tthis.coefficients = [];\n\n\t\tfor ( let i = 0; i < 9; i ++ ) {\n\n\t\t\tthis.coefficients.push( new Vector3() );\n\n\t\t}\n\n\t}\n\n\tset( coefficients ) {\n\n\t\tfor ( let i = 0; i < 9; i ++ ) {\n\n\t\t\tthis.coefficients[ i ].copy( coefficients[ i ] );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tzero() {\n\n\t\tfor ( let i = 0; i < 9; i ++ ) {\n\n\t\t\tthis.coefficients[ i ].set( 0, 0, 0 );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\t// get the radiance in the direction of the normal\n\t// target is a Vector3\n\tgetAt( normal, target ) {\n\n\t\t// normal is assumed to be unit length\n\n\t\tconst x = normal.x, y = normal.y, z = normal.z;\n\n\t\tconst coeff = this.coefficients;\n\n\t\t// band 0\n\t\ttarget.copy( coeff[ 0 ] ).multiplyScalar( 0.282095 );\n\n\t\t// band 1\n\t\ttarget.addScaledVector( coeff[ 1 ], 0.488603 * y );\n\t\ttarget.addScaledVector( coeff[ 2 ], 0.488603 * z );\n\t\ttarget.addScaledVector( coeff[ 3 ], 0.488603 * x );\n\n\t\t// band 2\n\t\ttarget.addScaledVector( coeff[ 4 ], 1.092548 * ( x * y ) );\n\t\ttarget.addScaledVector( coeff[ 5 ], 1.092548 * ( y * z ) );\n\t\ttarget.addScaledVector( coeff[ 6 ], 0.315392 * ( 3.0 * z * z - 1.0 ) );\n\t\ttarget.addScaledVector( coeff[ 7 ], 1.092548 * ( x * z ) );\n\t\ttarget.addScaledVector( coeff[ 8 ], 0.546274 * ( x * x - y * y ) );\n\n\t\treturn target;\n\n\t}\n\n\t// get the irradiance (radiance convolved with cosine lobe) in the direction of the normal\n\t// target is a Vector3\n\t// https://graphics.stanford.edu/papers/envmap/envmap.pdf\n\tgetIrradianceAt( normal, target ) {\n\n\t\t// normal is assumed to be unit length\n\n\t\tconst x = normal.x, y = normal.y, z = normal.z;\n\n\t\tconst coeff = this.coefficients;\n\n\t\t// band 0\n\t\ttarget.copy( coeff[ 0 ] ).multiplyScalar( 0.886227 ); // π * 0.282095\n\n\t\t// band 1\n\t\ttarget.addScaledVector( coeff[ 1 ], 2.0 * 0.511664 * y ); // ( 2 * π / 3 ) * 0.488603\n\t\ttarget.addScaledVector( coeff[ 2 ], 2.0 * 0.511664 * z );\n\t\ttarget.addScaledVector( coeff[ 3 ], 2.0 * 0.511664 * x );\n\n\t\t// band 2\n\t\ttarget.addScaledVector( coeff[ 4 ], 2.0 * 0.429043 * x * y ); // ( π / 4 ) * 1.092548\n\t\ttarget.addScaledVector( coeff[ 5 ], 2.0 * 0.429043 * y * z );\n\t\ttarget.addScaledVector( coeff[ 6 ], 0.743125 * z * z - 0.247708 ); // ( π / 4 ) * 0.315392 * 3\n\t\ttarget.addScaledVector( coeff[ 7 ], 2.0 * 0.429043 * x * z );\n\t\ttarget.addScaledVector( coeff[ 8 ], 0.429043 * ( x * x - y * y ) ); // ( π / 4 ) * 0.546274\n\n\t\treturn target;\n\n\t}\n\n\tadd( sh ) {\n\n\t\tfor ( let i = 0; i < 9; i ++ ) {\n\n\t\t\tthis.coefficients[ i ].add( sh.coefficients[ i ] );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\taddScaledSH( sh, s ) {\n\n\t\tfor ( let i = 0; i < 9; i ++ ) {\n\n\t\t\tthis.coefficients[ i ].addScaledVector( sh.coefficients[ i ], s );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tscale( s ) {\n\n\t\tfor ( let i = 0; i < 9; i ++ ) {\n\n\t\t\tthis.coefficients[ i ].multiplyScalar( s );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tlerp( sh, alpha ) {\n\n\t\tfor ( let i = 0; i < 9; i ++ ) {\n\n\t\t\tthis.coefficients[ i ].lerp( sh.coefficients[ i ], alpha );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tequals( sh ) {\n\n\t\tfor ( let i = 0; i < 9; i ++ ) {\n\n\t\t\tif ( ! this.coefficients[ i ].equals( sh.coefficients[ i ] ) ) {\n\n\t\t\t\treturn false;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn true;\n\n\t}\n\n\tcopy( sh ) {\n\n\t\treturn this.set( sh.coefficients );\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n\tfromArray( array, offset = 0 ) {\n\n\t\tconst coefficients = this.coefficients;\n\n\t\tfor ( let i = 0; i < 9; i ++ ) {\n\n\t\t\tcoefficients[ i ].fromArray( array, offset + ( i * 3 ) );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\ttoArray( array = [], offset = 0 ) {\n\n\t\tconst coefficients = this.coefficients;\n\n\t\tfor ( let i = 0; i < 9; i ++ ) {\n\n\t\t\tcoefficients[ i ].toArray( array, offset + ( i * 3 ) );\n\n\t\t}\n\n\t\treturn array;\n\n\t}\n\n\t// evaluate the basis functions\n\t// shBasis is an Array[ 9 ]\n\tstatic getBasisAt( normal, shBasis ) {\n\n\t\t// normal is assumed to be unit length\n\n\t\tconst x = normal.x, y = normal.y, z = normal.z;\n\n\t\t// band 0\n\t\tshBasis[ 0 ] = 0.282095;\n\n\t\t// band 1\n\t\tshBasis[ 1 ] = 0.488603 * y;\n\t\tshBasis[ 2 ] = 0.488603 * z;\n\t\tshBasis[ 3 ] = 0.488603 * x;\n\n\t\t// band 2\n\t\tshBasis[ 4 ] = 1.092548 * x * y;\n\t\tshBasis[ 5 ] = 1.092548 * y * z;\n\t\tshBasis[ 6 ] = 0.315392 * ( 3 * z * z - 1 );\n\t\tshBasis[ 7 ] = 1.092548 * x * z;\n\t\tshBasis[ 8 ] = 0.546274 * ( x * x - y * y );\n\n\t}\n\n}\n\nclass LightProbe extends Light {\n\n\tconstructor( sh = new SphericalHarmonics3(), intensity = 1 ) {\n\n\t\tsuper( undefined, intensity );\n\n\t\tthis.isLightProbe = true;\n\n\t\tthis.sh = sh;\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.sh.copy( source.sh );\n\n\t\treturn this;\n\n\t}\n\n\tfromJSON( json ) {\n\n\t\tthis.intensity = json.intensity; // TODO: Move this bit to Light.fromJSON();\n\t\tthis.sh.fromArray( json.sh );\n\n\t\treturn this;\n\n\t}\n\n\ttoJSON( meta ) {\n\n\t\tconst data = super.toJSON( meta );\n\n\t\tdata.object.sh = this.sh.toArray();\n\n\t\treturn data;\n\n\t}\n\n}\n\nclass MaterialLoader extends Loader {\n\n\tconstructor( manager ) {\n\n\t\tsuper( manager );\n\t\tthis.textures = {};\n\n\t}\n\n\tload( url, onLoad, onProgress, onError ) {\n\n\t\tconst scope = this;\n\n\t\tconst loader = new FileLoader( scope.manager );\n\t\tloader.setPath( scope.path );\n\t\tloader.setRequestHeader( scope.requestHeader );\n\t\tloader.setWithCredentials( scope.withCredentials );\n\t\tloader.load( url, function ( text ) {\n\n\t\t\ttry {\n\n\t\t\t\tonLoad( scope.parse( JSON.parse( text ) ) );\n\n\t\t\t} catch ( e ) {\n\n\t\t\t\tif ( onError ) {\n\n\t\t\t\t\tonError( e );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tconsole.error( e );\n\n\t\t\t\t}\n\n\t\t\t\tscope.manager.itemError( url );\n\n\t\t\t}\n\n\t\t}, onProgress, onError );\n\n\t}\n\n\tparse( json ) {\n\n\t\tconst textures = this.textures;\n\n\t\tfunction getTexture( name ) {\n\n\t\t\tif ( textures[ name ] === undefined ) {\n\n\t\t\t\tconsole.warn( 'THREE.MaterialLoader: Undefined texture', name );\n\n\t\t\t}\n\n\t\t\treturn textures[ name ];\n\n\t\t}\n\n\t\tconst material = MaterialLoader.createMaterialFromType( json.type );\n\n\t\tif ( json.uuid !== undefined ) material.uuid = json.uuid;\n\t\tif ( json.name !== undefined ) material.name = json.name;\n\t\tif ( json.color !== undefined && material.color !== undefined ) material.color.setHex( json.color );\n\t\tif ( json.roughness !== undefined ) material.roughness = json.roughness;\n\t\tif ( json.metalness !== undefined ) material.metalness = json.metalness;\n\t\tif ( json.sheen !== undefined ) material.sheen = json.sheen;\n\t\tif ( json.sheenColor !== undefined ) material.sheenColor = new Color().setHex( json.sheenColor );\n\t\tif ( json.sheenRoughness !== undefined ) material.sheenRoughness = json.sheenRoughness;\n\t\tif ( json.emissive !== undefined && material.emissive !== undefined ) material.emissive.setHex( json.emissive );\n\t\tif ( json.specular !== undefined && material.specular !== undefined ) material.specular.setHex( json.specular );\n\t\tif ( json.specularIntensity !== undefined ) material.specularIntensity = json.specularIntensity;\n\t\tif ( json.specularColor !== undefined && material.specularColor !== undefined ) material.specularColor.setHex( json.specularColor );\n\t\tif ( json.shininess !== undefined ) material.shininess = json.shininess;\n\t\tif ( json.clearcoat !== undefined ) material.clearcoat = json.clearcoat;\n\t\tif ( json.clearcoatRoughness !== undefined ) material.clearcoatRoughness = json.clearcoatRoughness;\n\t\tif ( json.dispersion !== undefined ) material.dispersion = json.dispersion;\n\t\tif ( json.iridescence !== undefined ) material.iridescence = json.iridescence;\n\t\tif ( json.iridescenceIOR !== undefined ) material.iridescenceIOR = json.iridescenceIOR;\n\t\tif ( json.iridescenceThicknessRange !== undefined ) material.iridescenceThicknessRange = json.iridescenceThicknessRange;\n\t\tif ( json.transmission !== undefined ) material.transmission = json.transmission;\n\t\tif ( json.thickness !== undefined ) material.thickness = json.thickness;\n\t\tif ( json.attenuationDistance !== undefined ) material.attenuationDistance = json.attenuationDistance;\n\t\tif ( json.attenuationColor !== undefined && material.attenuationColor !== undefined ) material.attenuationColor.setHex( json.attenuationColor );\n\t\tif ( json.anisotropy !== undefined ) material.anisotropy = json.anisotropy;\n\t\tif ( json.anisotropyRotation !== undefined ) material.anisotropyRotation = json.anisotropyRotation;\n\t\tif ( json.fog !== undefined ) material.fog = json.fog;\n\t\tif ( json.flatShading !== undefined ) material.flatShading = json.flatShading;\n\t\tif ( json.blending !== undefined ) material.blending = json.blending;\n\t\tif ( json.combine !== undefined ) material.combine = json.combine;\n\t\tif ( json.side !== undefined ) material.side = json.side;\n\t\tif ( json.shadowSide !== undefined ) material.shadowSide = json.shadowSide;\n\t\tif ( json.opacity !== undefined ) material.opacity = json.opacity;\n\t\tif ( json.transparent !== undefined ) material.transparent = json.transparent;\n\t\tif ( json.alphaTest !== undefined ) material.alphaTest = json.alphaTest;\n\t\tif ( json.alphaHash !== undefined ) material.alphaHash = json.alphaHash;\n\t\tif ( json.depthFunc !== undefined ) material.depthFunc = json.depthFunc;\n\t\tif ( json.depthTest !== undefined ) material.depthTest = json.depthTest;\n\t\tif ( json.depthWrite !== undefined ) material.depthWrite = json.depthWrite;\n\t\tif ( json.colorWrite !== undefined ) material.colorWrite = json.colorWrite;\n\t\tif ( json.blendSrc !== undefined ) material.blendSrc = json.blendSrc;\n\t\tif ( json.blendDst !== undefined ) material.blendDst = json.blendDst;\n\t\tif ( json.blendEquation !== undefined ) material.blendEquation = json.blendEquation;\n\t\tif ( json.blendSrcAlpha !== undefined ) material.blendSrcAlpha = json.blendSrcAlpha;\n\t\tif ( json.blendDstAlpha !== undefined ) material.blendDstAlpha = json.blendDstAlpha;\n\t\tif ( json.blendEquationAlpha !== undefined ) material.blendEquationAlpha = json.blendEquationAlpha;\n\t\tif ( json.blendColor !== undefined && material.blendColor !== undefined ) material.blendColor.setHex( json.blendColor );\n\t\tif ( json.blendAlpha !== undefined ) material.blendAlpha = json.blendAlpha;\n\t\tif ( json.stencilWriteMask !== undefined ) material.stencilWriteMask = json.stencilWriteMask;\n\t\tif ( json.stencilFunc !== undefined ) material.stencilFunc = json.stencilFunc;\n\t\tif ( json.stencilRef !== undefined ) material.stencilRef = json.stencilRef;\n\t\tif ( json.stencilFuncMask !== undefined ) material.stencilFuncMask = json.stencilFuncMask;\n\t\tif ( json.stencilFail !== undefined ) material.stencilFail = json.stencilFail;\n\t\tif ( json.stencilZFail !== undefined ) material.stencilZFail = json.stencilZFail;\n\t\tif ( json.stencilZPass !== undefined ) material.stencilZPass = json.stencilZPass;\n\t\tif ( json.stencilWrite !== undefined ) material.stencilWrite = json.stencilWrite;\n\n\t\tif ( json.wireframe !== undefined ) material.wireframe = json.wireframe;\n\t\tif ( json.wireframeLinewidth !== undefined ) material.wireframeLinewidth = json.wireframeLinewidth;\n\t\tif ( json.wireframeLinecap !== undefined ) material.wireframeLinecap = json.wireframeLinecap;\n\t\tif ( json.wireframeLinejoin !== undefined ) material.wireframeLinejoin = json.wireframeLinejoin;\n\n\t\tif ( json.rotation !== undefined ) material.rotation = json.rotation;\n\n\t\tif ( json.linewidth !== undefined ) material.linewidth = json.linewidth;\n\t\tif ( json.dashSize !== undefined ) material.dashSize = json.dashSize;\n\t\tif ( json.gapSize !== undefined ) material.gapSize = json.gapSize;\n\t\tif ( json.scale !== undefined ) material.scale = json.scale;\n\n\t\tif ( json.polygonOffset !== undefined ) material.polygonOffset = json.polygonOffset;\n\t\tif ( json.polygonOffsetFactor !== undefined ) material.polygonOffsetFactor = json.polygonOffsetFactor;\n\t\tif ( json.polygonOffsetUnits !== undefined ) material.polygonOffsetUnits = json.polygonOffsetUnits;\n\n\t\tif ( json.dithering !== undefined ) material.dithering = json.dithering;\n\n\t\tif ( json.alphaToCoverage !== undefined ) material.alphaToCoverage = json.alphaToCoverage;\n\t\tif ( json.premultipliedAlpha !== undefined ) material.premultipliedAlpha = json.premultipliedAlpha;\n\t\tif ( json.forceSinglePass !== undefined ) material.forceSinglePass = json.forceSinglePass;\n\n\t\tif ( json.visible !== undefined ) material.visible = json.visible;\n\n\t\tif ( json.toneMapped !== undefined ) material.toneMapped = json.toneMapped;\n\n\t\tif ( json.userData !== undefined ) material.userData = json.userData;\n\n\t\tif ( json.vertexColors !== undefined ) {\n\n\t\t\tif ( typeof json.vertexColors === 'number' ) {\n\n\t\t\t\tmaterial.vertexColors = ( json.vertexColors > 0 ) ? true : false;\n\n\t\t\t} else {\n\n\t\t\t\tmaterial.vertexColors = json.vertexColors;\n\n\t\t\t}\n\n\t\t}\n\n\t\t// Shader Material\n\n\t\tif ( json.uniforms !== undefined ) {\n\n\t\t\tfor ( const name in json.uniforms ) {\n\n\t\t\t\tconst uniform = json.uniforms[ name ];\n\n\t\t\t\tmaterial.uniforms[ name ] = {};\n\n\t\t\t\tswitch ( uniform.type ) {\n\n\t\t\t\t\tcase 't':\n\t\t\t\t\t\tmaterial.uniforms[ name ].value = getTexture( uniform.value );\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'c':\n\t\t\t\t\t\tmaterial.uniforms[ name ].value = new Color().setHex( uniform.value );\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'v2':\n\t\t\t\t\t\tmaterial.uniforms[ name ].value = new Vector2().fromArray( uniform.value );\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'v3':\n\t\t\t\t\t\tmaterial.uniforms[ name ].value = new Vector3().fromArray( uniform.value );\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'v4':\n\t\t\t\t\t\tmaterial.uniforms[ name ].value = new Vector4().fromArray( uniform.value );\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'm3':\n\t\t\t\t\t\tmaterial.uniforms[ name ].value = new Matrix3().fromArray( uniform.value );\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tcase 'm4':\n\t\t\t\t\t\tmaterial.uniforms[ name ].value = new Matrix4().fromArray( uniform.value );\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tdefault:\n\t\t\t\t\t\tmaterial.uniforms[ name ].value = uniform.value;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( json.defines !== undefined ) material.defines = json.defines;\n\t\tif ( json.vertexShader !== undefined ) material.vertexShader = json.vertexShader;\n\t\tif ( json.fragmentShader !== undefined ) material.fragmentShader = json.fragmentShader;\n\t\tif ( json.glslVersion !== undefined ) material.glslVersion = json.glslVersion;\n\n\t\tif ( json.extensions !== undefined ) {\n\n\t\t\tfor ( const key in json.extensions ) {\n\n\t\t\t\tmaterial.extensions[ key ] = json.extensions[ key ];\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( json.lights !== undefined ) material.lights = json.lights;\n\t\tif ( json.clipping !== undefined ) material.clipping = json.clipping;\n\n\t\t// for PointsMaterial\n\n\t\tif ( json.size !== undefined ) material.size = json.size;\n\t\tif ( json.sizeAttenuation !== undefined ) material.sizeAttenuation = json.sizeAttenuation;\n\n\t\t// maps\n\n\t\tif ( json.map !== undefined ) material.map = getTexture( json.map );\n\t\tif ( json.matcap !== undefined ) material.matcap = getTexture( json.matcap );\n\n\t\tif ( json.alphaMap !== undefined ) material.alphaMap = getTexture( json.alphaMap );\n\n\t\tif ( json.bumpMap !== undefined ) material.bumpMap = getTexture( json.bumpMap );\n\t\tif ( json.bumpScale !== undefined ) material.bumpScale = json.bumpScale;\n\n\t\tif ( json.normalMap !== undefined ) material.normalMap = getTexture( json.normalMap );\n\t\tif ( json.normalMapType !== undefined ) material.normalMapType = json.normalMapType;\n\t\tif ( json.normalScale !== undefined ) {\n\n\t\t\tlet normalScale = json.normalScale;\n\n\t\t\tif ( Array.isArray( normalScale ) === false ) {\n\n\t\t\t\t// Blender exporter used to export a scalar. See #7459\n\n\t\t\t\tnormalScale = [ normalScale, normalScale ];\n\n\t\t\t}\n\n\t\t\tmaterial.normalScale = new Vector2().fromArray( normalScale );\n\n\t\t}\n\n\t\tif ( json.displacementMap !== undefined ) material.displacementMap = getTexture( json.displacementMap );\n\t\tif ( json.displacementScale !== undefined ) material.displacementScale = json.displacementScale;\n\t\tif ( json.displacementBias !== undefined ) material.displacementBias = json.displacementBias;\n\n\t\tif ( json.roughnessMap !== undefined ) material.roughnessMap = getTexture( json.roughnessMap );\n\t\tif ( json.metalnessMap !== undefined ) material.metalnessMap = getTexture( json.metalnessMap );\n\n\t\tif ( json.emissiveMap !== undefined ) material.emissiveMap = getTexture( json.emissiveMap );\n\t\tif ( json.emissiveIntensity !== undefined ) material.emissiveIntensity = json.emissiveIntensity;\n\n\t\tif ( json.specularMap !== undefined ) material.specularMap = getTexture( json.specularMap );\n\t\tif ( json.specularIntensityMap !== undefined ) material.specularIntensityMap = getTexture( json.specularIntensityMap );\n\t\tif ( json.specularColorMap !== undefined ) material.specularColorMap = getTexture( json.specularColorMap );\n\n\t\tif ( json.envMap !== undefined ) material.envMap = getTexture( json.envMap );\n\t\tif ( json.envMapRotation !== undefined ) material.envMapRotation.fromArray( json.envMapRotation );\n\t\tif ( json.envMapIntensity !== undefined ) material.envMapIntensity = json.envMapIntensity;\n\n\t\tif ( json.reflectivity !== undefined ) material.reflectivity = json.reflectivity;\n\t\tif ( json.refractionRatio !== undefined ) material.refractionRatio = json.refractionRatio;\n\n\t\tif ( json.lightMap !== undefined ) material.lightMap = getTexture( json.lightMap );\n\t\tif ( json.lightMapIntensity !== undefined ) material.lightMapIntensity = json.lightMapIntensity;\n\n\t\tif ( json.aoMap !== undefined ) material.aoMap = getTexture( json.aoMap );\n\t\tif ( json.aoMapIntensity !== undefined ) material.aoMapIntensity = json.aoMapIntensity;\n\n\t\tif ( json.gradientMap !== undefined ) material.gradientMap = getTexture( json.gradientMap );\n\n\t\tif ( json.clearcoatMap !== undefined ) material.clearcoatMap = getTexture( json.clearcoatMap );\n\t\tif ( json.clearcoatRoughnessMap !== undefined ) material.clearcoatRoughnessMap = getTexture( json.clearcoatRoughnessMap );\n\t\tif ( json.clearcoatNormalMap !== undefined ) material.clearcoatNormalMap = getTexture( json.clearcoatNormalMap );\n\t\tif ( json.clearcoatNormalScale !== undefined ) material.clearcoatNormalScale = new Vector2().fromArray( json.clearcoatNormalScale );\n\n\t\tif ( json.iridescenceMap !== undefined ) material.iridescenceMap = getTexture( json.iridescenceMap );\n\t\tif ( json.iridescenceThicknessMap !== undefined ) material.iridescenceThicknessMap = getTexture( json.iridescenceThicknessMap );\n\n\t\tif ( json.transmissionMap !== undefined ) material.transmissionMap = getTexture( json.transmissionMap );\n\t\tif ( json.thicknessMap !== undefined ) material.thicknessMap = getTexture( json.thicknessMap );\n\n\t\tif ( json.anisotropyMap !== undefined ) material.anisotropyMap = getTexture( json.anisotropyMap );\n\n\t\tif ( json.sheenColorMap !== undefined ) material.sheenColorMap = getTexture( json.sheenColorMap );\n\t\tif ( json.sheenRoughnessMap !== undefined ) material.sheenRoughnessMap = getTexture( json.sheenRoughnessMap );\n\n\t\treturn material;\n\n\t}\n\n\tsetTextures( value ) {\n\n\t\tthis.textures = value;\n\t\treturn this;\n\n\t}\n\n\tstatic createMaterialFromType( type ) {\n\n\t\tconst materialLib = {\n\t\t\tShadowMaterial,\n\t\t\tSpriteMaterial,\n\t\t\tRawShaderMaterial,\n\t\t\tShaderMaterial,\n\t\t\tPointsMaterial,\n\t\t\tMeshPhysicalMaterial,\n\t\t\tMeshStandardMaterial,\n\t\t\tMeshPhongMaterial,\n\t\t\tMeshToonMaterial,\n\t\t\tMeshNormalMaterial,\n\t\t\tMeshLambertMaterial,\n\t\t\tMeshDepthMaterial,\n\t\t\tMeshDistanceMaterial,\n\t\t\tMeshBasicMaterial,\n\t\t\tMeshMatcapMaterial,\n\t\t\tLineDashedMaterial,\n\t\t\tLineBasicMaterial,\n\t\t\tMaterial\n\t\t};\n\n\t\treturn new materialLib[ type ]();\n\n\t}\n\n}\n\nclass LoaderUtils {\n\n\tstatic decodeText( array ) { // @deprecated, r165\n\n\t\tconsole.warn( 'THREE.LoaderUtils: decodeText() has been deprecated with r165 and will be removed with r175. Use TextDecoder instead.' );\n\n\t\tif ( typeof TextDecoder !== 'undefined' ) {\n\n\t\t\treturn new TextDecoder().decode( array );\n\n\t\t}\n\n\t\t// Avoid the String.fromCharCode.apply(null, array) shortcut, which\n\t\t// throws a \"maximum call stack size exceeded\" error for large arrays.\n\n\t\tlet s = '';\n\n\t\tfor ( let i = 0, il = array.length; i < il; i ++ ) {\n\n\t\t\t// Implicitly assumes little-endian.\n\t\t\ts += String.fromCharCode( array[ i ] );\n\n\t\t}\n\n\t\ttry {\n\n\t\t\t// merges multi-byte utf-8 characters.\n\n\t\t\treturn decodeURIComponent( escape( s ) );\n\n\t\t} catch ( e ) { // see #16358\n\n\t\t\treturn s;\n\n\t\t}\n\n\t}\n\n\tstatic extractUrlBase( url ) {\n\n\t\tconst index = url.lastIndexOf( '/' );\n\n\t\tif ( index === - 1 ) return './';\n\n\t\treturn url.slice( 0, index + 1 );\n\n\t}\n\n\tstatic resolveURL( url, path ) {\n\n\t\t// Invalid URL\n\t\tif ( typeof url !== 'string' || url === '' ) return '';\n\n\t\t// Host Relative URL\n\t\tif ( /^https?:\\/\\//i.test( path ) && /^\\//.test( url ) ) {\n\n\t\t\tpath = path.replace( /(^https?:\\/\\/[^\\/]+).*/i, '$1' );\n\n\t\t}\n\n\t\t// Absolute URL http://,https://,//\n\t\tif ( /^(https?:)?\\/\\//i.test( url ) ) return url;\n\n\t\t// Data URI\n\t\tif ( /^data:.*,.*$/i.test( url ) ) return url;\n\n\t\t// Blob URL\n\t\tif ( /^blob:.*$/i.test( url ) ) return url;\n\n\t\t// Relative URL\n\t\treturn path + url;\n\n\t}\n\n}\n\nclass InstancedBufferGeometry extends BufferGeometry {\n\n\tconstructor() {\n\n\t\tsuper();\n\n\t\tthis.isInstancedBufferGeometry = true;\n\n\t\tthis.type = 'InstancedBufferGeometry';\n\t\tthis.instanceCount = Infinity;\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.instanceCount = source.instanceCount;\n\n\t\treturn this;\n\n\t}\n\n\ttoJSON() {\n\n\t\tconst data = super.toJSON();\n\n\t\tdata.instanceCount = this.instanceCount;\n\n\t\tdata.isInstancedBufferGeometry = true;\n\n\t\treturn data;\n\n\t}\n\n}\n\nclass BufferGeometryLoader extends Loader {\n\n\tconstructor( manager ) {\n\n\t\tsuper( manager );\n\n\t}\n\n\tload( url, onLoad, onProgress, onError ) {\n\n\t\tconst scope = this;\n\n\t\tconst loader = new FileLoader( scope.manager );\n\t\tloader.setPath( scope.path );\n\t\tloader.setRequestHeader( scope.requestHeader );\n\t\tloader.setWithCredentials( scope.withCredentials );\n\t\tloader.load( url, function ( text ) {\n\n\t\t\ttry {\n\n\t\t\t\tonLoad( scope.parse( JSON.parse( text ) ) );\n\n\t\t\t} catch ( e ) {\n\n\t\t\t\tif ( onError ) {\n\n\t\t\t\t\tonError( e );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tconsole.error( e );\n\n\t\t\t\t}\n\n\t\t\t\tscope.manager.itemError( url );\n\n\t\t\t}\n\n\t\t}, onProgress, onError );\n\n\t}\n\n\tparse( json ) {\n\n\t\tconst interleavedBufferMap = {};\n\t\tconst arrayBufferMap = {};\n\n\t\tfunction getInterleavedBuffer( json, uuid ) {\n\n\t\t\tif ( interleavedBufferMap[ uuid ] !== undefined ) return interleavedBufferMap[ uuid ];\n\n\t\t\tconst interleavedBuffers = json.interleavedBuffers;\n\t\t\tconst interleavedBuffer = interleavedBuffers[ uuid ];\n\n\t\t\tconst buffer = getArrayBuffer( json, interleavedBuffer.buffer );\n\n\t\t\tconst array = getTypedArray( interleavedBuffer.type, buffer );\n\t\t\tconst ib = new InterleavedBuffer( array, interleavedBuffer.stride );\n\t\t\tib.uuid = interleavedBuffer.uuid;\n\n\t\t\tinterleavedBufferMap[ uuid ] = ib;\n\n\t\t\treturn ib;\n\n\t\t}\n\n\t\tfunction getArrayBuffer( json, uuid ) {\n\n\t\t\tif ( arrayBufferMap[ uuid ] !== undefined ) return arrayBufferMap[ uuid ];\n\n\t\t\tconst arrayBuffers = json.arrayBuffers;\n\t\t\tconst arrayBuffer = arrayBuffers[ uuid ];\n\n\t\t\tconst ab = new Uint32Array( arrayBuffer ).buffer;\n\n\t\t\tarrayBufferMap[ uuid ] = ab;\n\n\t\t\treturn ab;\n\n\t\t}\n\n\t\tconst geometry = json.isInstancedBufferGeometry ? new InstancedBufferGeometry() : new BufferGeometry();\n\n\t\tconst index = json.data.index;\n\n\t\tif ( index !== undefined ) {\n\n\t\t\tconst typedArray = getTypedArray( index.type, index.array );\n\t\t\tgeometry.setIndex( new BufferAttribute( typedArray, 1 ) );\n\n\t\t}\n\n\t\tconst attributes = json.data.attributes;\n\n\t\tfor ( const key in attributes ) {\n\n\t\t\tconst attribute = attributes[ key ];\n\t\t\tlet bufferAttribute;\n\n\t\t\tif ( attribute.isInterleavedBufferAttribute ) {\n\n\t\t\t\tconst interleavedBuffer = getInterleavedBuffer( json.data, attribute.data );\n\t\t\t\tbufferAttribute = new InterleavedBufferAttribute( interleavedBuffer, attribute.itemSize, attribute.offset, attribute.normalized );\n\n\t\t\t} else {\n\n\t\t\t\tconst typedArray = getTypedArray( attribute.type, attribute.array );\n\t\t\t\tconst bufferAttributeConstr = attribute.isInstancedBufferAttribute ? InstancedBufferAttribute : BufferAttribute;\n\t\t\t\tbufferAttribute = new bufferAttributeConstr( typedArray, attribute.itemSize, attribute.normalized );\n\n\t\t\t}\n\n\t\t\tif ( attribute.name !== undefined ) bufferAttribute.name = attribute.name;\n\t\t\tif ( attribute.usage !== undefined ) bufferAttribute.setUsage( attribute.usage );\n\n\t\t\tgeometry.setAttribute( key, bufferAttribute );\n\n\t\t}\n\n\t\tconst morphAttributes = json.data.morphAttributes;\n\n\t\tif ( morphAttributes ) {\n\n\t\t\tfor ( const key in morphAttributes ) {\n\n\t\t\t\tconst attributeArray = morphAttributes[ key ];\n\n\t\t\t\tconst array = [];\n\n\t\t\t\tfor ( let i = 0, il = attributeArray.length; i < il; i ++ ) {\n\n\t\t\t\t\tconst attribute = attributeArray[ i ];\n\t\t\t\t\tlet bufferAttribute;\n\n\t\t\t\t\tif ( attribute.isInterleavedBufferAttribute ) {\n\n\t\t\t\t\t\tconst interleavedBuffer = getInterleavedBuffer( json.data, attribute.data );\n\t\t\t\t\t\tbufferAttribute = new InterleavedBufferAttribute( interleavedBuffer, attribute.itemSize, attribute.offset, attribute.normalized );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tconst typedArray = getTypedArray( attribute.type, attribute.array );\n\t\t\t\t\t\tbufferAttribute = new BufferAttribute( typedArray, attribute.itemSize, attribute.normalized );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( attribute.name !== undefined ) bufferAttribute.name = attribute.name;\n\t\t\t\t\tarray.push( bufferAttribute );\n\n\t\t\t\t}\n\n\t\t\t\tgeometry.morphAttributes[ key ] = array;\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst morphTargetsRelative = json.data.morphTargetsRelative;\n\n\t\tif ( morphTargetsRelative ) {\n\n\t\t\tgeometry.morphTargetsRelative = true;\n\n\t\t}\n\n\t\tconst groups = json.data.groups || json.data.drawcalls || json.data.offsets;\n\n\t\tif ( groups !== undefined ) {\n\n\t\t\tfor ( let i = 0, n = groups.length; i !== n; ++ i ) {\n\n\t\t\t\tconst group = groups[ i ];\n\n\t\t\t\tgeometry.addGroup( group.start, group.count, group.materialIndex );\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst boundingSphere = json.data.boundingSphere;\n\n\t\tif ( boundingSphere !== undefined ) {\n\n\t\t\tconst center = new Vector3();\n\n\t\t\tif ( boundingSphere.center !== undefined ) {\n\n\t\t\t\tcenter.fromArray( boundingSphere.center );\n\n\t\t\t}\n\n\t\t\tgeometry.boundingSphere = new Sphere( center, boundingSphere.radius );\n\n\t\t}\n\n\t\tif ( json.name ) geometry.name = json.name;\n\t\tif ( json.userData ) geometry.userData = json.userData;\n\n\t\treturn geometry;\n\n\t}\n\n}\n\nclass ObjectLoader extends Loader {\n\n\tconstructor( manager ) {\n\n\t\tsuper( manager );\n\n\t}\n\n\tload( url, onLoad, onProgress, onError ) {\n\n\t\tconst scope = this;\n\n\t\tconst path = ( this.path === '' ) ? LoaderUtils.extractUrlBase( url ) : this.path;\n\t\tthis.resourcePath = this.resourcePath || path;\n\n\t\tconst loader = new FileLoader( this.manager );\n\t\tloader.setPath( this.path );\n\t\tloader.setRequestHeader( this.requestHeader );\n\t\tloader.setWithCredentials( this.withCredentials );\n\t\tloader.load( url, function ( text ) {\n\n\t\t\tlet json = null;\n\n\t\t\ttry {\n\n\t\t\t\tjson = JSON.parse( text );\n\n\t\t\t} catch ( error ) {\n\n\t\t\t\tif ( onError !== undefined ) onError( error );\n\n\t\t\t\tconsole.error( 'THREE:ObjectLoader: Can\\'t parse ' + url + '.', error.message );\n\n\t\t\t\treturn;\n\n\t\t\t}\n\n\t\t\tconst metadata = json.metadata;\n\n\t\t\tif ( metadata === undefined || metadata.type === undefined || metadata.type.toLowerCase() === 'geometry' ) {\n\n\t\t\t\tif ( onError !== undefined ) onError( new Error( 'THREE.ObjectLoader: Can\\'t load ' + url ) );\n\n\t\t\t\tconsole.error( 'THREE.ObjectLoader: Can\\'t load ' + url );\n\t\t\t\treturn;\n\n\t\t\t}\n\n\t\t\tscope.parse( json, onLoad );\n\n\t\t}, onProgress, onError );\n\n\t}\n\n\tasync loadAsync( url, onProgress ) {\n\n\t\tconst scope = this;\n\n\t\tconst path = ( this.path === '' ) ? LoaderUtils.extractUrlBase( url ) : this.path;\n\t\tthis.resourcePath = this.resourcePath || path;\n\n\t\tconst loader = new FileLoader( this.manager );\n\t\tloader.setPath( this.path );\n\t\tloader.setRequestHeader( this.requestHeader );\n\t\tloader.setWithCredentials( this.withCredentials );\n\n\t\tconst text = await loader.loadAsync( url, onProgress );\n\n\t\tconst json = JSON.parse( text );\n\n\t\tconst metadata = json.metadata;\n\n\t\tif ( metadata === undefined || metadata.type === undefined || metadata.type.toLowerCase() === 'geometry' ) {\n\n\t\t\tthrow new Error( 'THREE.ObjectLoader: Can\\'t load ' + url );\n\n\t\t}\n\n\t\treturn await scope.parseAsync( json );\n\n\t}\n\n\tparse( json, onLoad ) {\n\n\t\tconst animations = this.parseAnimations( json.animations );\n\t\tconst shapes = this.parseShapes( json.shapes );\n\t\tconst geometries = this.parseGeometries( json.geometries, shapes );\n\n\t\tconst images = this.parseImages( json.images, function () {\n\n\t\t\tif ( onLoad !== undefined ) onLoad( object );\n\n\t\t} );\n\n\t\tconst textures = this.parseTextures( json.textures, images );\n\t\tconst materials = this.parseMaterials( json.materials, textures );\n\n\t\tconst object = this.parseObject( json.object, geometries, materials, textures, animations );\n\t\tconst skeletons = this.parseSkeletons( json.skeletons, object );\n\n\t\tthis.bindSkeletons( object, skeletons );\n\n\t\t//\n\n\t\tif ( onLoad !== undefined ) {\n\n\t\t\tlet hasImages = false;\n\n\t\t\tfor ( const uuid in images ) {\n\n\t\t\t\tif ( images[ uuid ].data instanceof HTMLImageElement ) {\n\n\t\t\t\t\thasImages = true;\n\t\t\t\t\tbreak;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tif ( hasImages === false ) onLoad( object );\n\n\t\t}\n\n\t\treturn object;\n\n\t}\n\n\tasync parseAsync( json ) {\n\n\t\tconst animations = this.parseAnimations( json.animations );\n\t\tconst shapes = this.parseShapes( json.shapes );\n\t\tconst geometries = this.parseGeometries( json.geometries, shapes );\n\n\t\tconst images = await this.parseImagesAsync( json.images );\n\n\t\tconst textures = this.parseTextures( json.textures, images );\n\t\tconst materials = this.parseMaterials( json.materials, textures );\n\n\t\tconst object = this.parseObject( json.object, geometries, materials, textures, animations );\n\t\tconst skeletons = this.parseSkeletons( json.skeletons, object );\n\n\t\tthis.bindSkeletons( object, skeletons );\n\n\t\treturn object;\n\n\t}\n\n\tparseShapes( json ) {\n\n\t\tconst shapes = {};\n\n\t\tif ( json !== undefined ) {\n\n\t\t\tfor ( let i = 0, l = json.length; i < l; i ++ ) {\n\n\t\t\t\tconst shape = new Shape().fromJSON( json[ i ] );\n\n\t\t\t\tshapes[ shape.uuid ] = shape;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn shapes;\n\n\t}\n\n\tparseSkeletons( json, object ) {\n\n\t\tconst skeletons = {};\n\t\tconst bones = {};\n\n\t\t// generate bone lookup table\n\n\t\tobject.traverse( function ( child ) {\n\n\t\t\tif ( child.isBone ) bones[ child.uuid ] = child;\n\n\t\t} );\n\n\t\t// create skeletons\n\n\t\tif ( json !== undefined ) {\n\n\t\t\tfor ( let i = 0, l = json.length; i < l; i ++ ) {\n\n\t\t\t\tconst skeleton = new Skeleton().fromJSON( json[ i ], bones );\n\n\t\t\t\tskeletons[ skeleton.uuid ] = skeleton;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn skeletons;\n\n\t}\n\n\tparseGeometries( json, shapes ) {\n\n\t\tconst geometries = {};\n\n\t\tif ( json !== undefined ) {\n\n\t\t\tconst bufferGeometryLoader = new BufferGeometryLoader();\n\n\t\t\tfor ( let i = 0, l = json.length; i < l; i ++ ) {\n\n\t\t\t\tlet geometry;\n\t\t\t\tconst data = json[ i ];\n\n\t\t\t\tswitch ( data.type ) {\n\n\t\t\t\t\tcase 'BufferGeometry':\n\t\t\t\t\tcase 'InstancedBufferGeometry':\n\n\t\t\t\t\t\tgeometry = bufferGeometryLoader.parse( data );\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\tdefault:\n\n\t\t\t\t\t\tif ( data.type in Geometries ) {\n\n\t\t\t\t\t\t\tgeometry = Geometries[ data.type ].fromJSON( data, shapes );\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\tconsole.warn( `THREE.ObjectLoader: Unsupported geometry type \"${ data.type }\"` );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tgeometry.uuid = data.uuid;\n\n\t\t\t\tif ( data.name !== undefined ) geometry.name = data.name;\n\t\t\t\tif ( data.userData !== undefined ) geometry.userData = data.userData;\n\n\t\t\t\tgeometries[ data.uuid ] = geometry;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn geometries;\n\n\t}\n\n\tparseMaterials( json, textures ) {\n\n\t\tconst cache = {}; // MultiMaterial\n\t\tconst materials = {};\n\n\t\tif ( json !== undefined ) {\n\n\t\t\tconst loader = new MaterialLoader();\n\t\t\tloader.setTextures( textures );\n\n\t\t\tfor ( let i = 0, l = json.length; i < l; i ++ ) {\n\n\t\t\t\tconst data = json[ i ];\n\n\t\t\t\tif ( cache[ data.uuid ] === undefined ) {\n\n\t\t\t\t\tcache[ data.uuid ] = loader.parse( data );\n\n\t\t\t\t}\n\n\t\t\t\tmaterials[ data.uuid ] = cache[ data.uuid ];\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn materials;\n\n\t}\n\n\tparseAnimations( json ) {\n\n\t\tconst animations = {};\n\n\t\tif ( json !== undefined ) {\n\n\t\t\tfor ( let i = 0; i < json.length; i ++ ) {\n\n\t\t\t\tconst data = json[ i ];\n\n\t\t\t\tconst clip = AnimationClip.parse( data );\n\n\t\t\t\tanimations[ clip.uuid ] = clip;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn animations;\n\n\t}\n\n\tparseImages( json, onLoad ) {\n\n\t\tconst scope = this;\n\t\tconst images = {};\n\n\t\tlet loader;\n\n\t\tfunction loadImage( url ) {\n\n\t\t\tscope.manager.itemStart( url );\n\n\t\t\treturn loader.load( url, function () {\n\n\t\t\t\tscope.manager.itemEnd( url );\n\n\t\t\t}, undefined, function () {\n\n\t\t\t\tscope.manager.itemError( url );\n\t\t\t\tscope.manager.itemEnd( url );\n\n\t\t\t} );\n\n\t\t}\n\n\t\tfunction deserializeImage( image ) {\n\n\t\t\tif ( typeof image === 'string' ) {\n\n\t\t\t\tconst url = image;\n\n\t\t\t\tconst path = /^(\\/\\/)|([a-z]+:(\\/\\/)?)/i.test( url ) ? url : scope.resourcePath + url;\n\n\t\t\t\treturn loadImage( path );\n\n\t\t\t} else {\n\n\t\t\t\tif ( image.data ) {\n\n\t\t\t\t\treturn {\n\t\t\t\t\t\tdata: getTypedArray( image.type, image.data ),\n\t\t\t\t\t\twidth: image.width,\n\t\t\t\t\t\theight: image.height\n\t\t\t\t\t};\n\n\t\t\t\t} else {\n\n\t\t\t\t\treturn null;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( json !== undefined && json.length > 0 ) {\n\n\t\t\tconst manager = new LoadingManager( onLoad );\n\n\t\t\tloader = new ImageLoader( manager );\n\t\t\tloader.setCrossOrigin( this.crossOrigin );\n\n\t\t\tfor ( let i = 0, il = json.length; i < il; i ++ ) {\n\n\t\t\t\tconst image = json[ i ];\n\t\t\t\tconst url = image.url;\n\n\t\t\t\tif ( Array.isArray( url ) ) {\n\n\t\t\t\t\t// load array of images e.g CubeTexture\n\n\t\t\t\t\tconst imageArray = [];\n\n\t\t\t\t\tfor ( let j = 0, jl = url.length; j < jl; j ++ ) {\n\n\t\t\t\t\t\tconst currentUrl = url[ j ];\n\n\t\t\t\t\t\tconst deserializedImage = deserializeImage( currentUrl );\n\n\t\t\t\t\t\tif ( deserializedImage !== null ) {\n\n\t\t\t\t\t\t\tif ( deserializedImage instanceof HTMLImageElement ) {\n\n\t\t\t\t\t\t\t\timageArray.push( deserializedImage );\n\n\t\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t\t// special case: handle array of data textures for cube textures\n\n\t\t\t\t\t\t\t\timageArray.push( new DataTexture( deserializedImage.data, deserializedImage.width, deserializedImage.height ) );\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t\timages[ image.uuid ] = new Source( imageArray );\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// load single image\n\n\t\t\t\t\tconst deserializedImage = deserializeImage( image.url );\n\t\t\t\t\timages[ image.uuid ] = new Source( deserializedImage );\n\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn images;\n\n\t}\n\n\tasync parseImagesAsync( json ) {\n\n\t\tconst scope = this;\n\t\tconst images = {};\n\n\t\tlet loader;\n\n\t\tasync function deserializeImage( image ) {\n\n\t\t\tif ( typeof image === 'string' ) {\n\n\t\t\t\tconst url = image;\n\n\t\t\t\tconst path = /^(\\/\\/)|([a-z]+:(\\/\\/)?)/i.test( url ) ? url : scope.resourcePath + url;\n\n\t\t\t\treturn await loader.loadAsync( path );\n\n\t\t\t} else {\n\n\t\t\t\tif ( image.data ) {\n\n\t\t\t\t\treturn {\n\t\t\t\t\t\tdata: getTypedArray( image.type, image.data ),\n\t\t\t\t\t\twidth: image.width,\n\t\t\t\t\t\theight: image.height\n\t\t\t\t\t};\n\n\t\t\t\t} else {\n\n\t\t\t\t\treturn null;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( json !== undefined && json.length > 0 ) {\n\n\t\t\tloader = new ImageLoader( this.manager );\n\t\t\tloader.setCrossOrigin( this.crossOrigin );\n\n\t\t\tfor ( let i = 0, il = json.length; i < il; i ++ ) {\n\n\t\t\t\tconst image = json[ i ];\n\t\t\t\tconst url = image.url;\n\n\t\t\t\tif ( Array.isArray( url ) ) {\n\n\t\t\t\t\t// load array of images e.g CubeTexture\n\n\t\t\t\t\tconst imageArray = [];\n\n\t\t\t\t\tfor ( let j = 0, jl = url.length; j < jl; j ++ ) {\n\n\t\t\t\t\t\tconst currentUrl = url[ j ];\n\n\t\t\t\t\t\tconst deserializedImage = await deserializeImage( currentUrl );\n\n\t\t\t\t\t\tif ( deserializedImage !== null ) {\n\n\t\t\t\t\t\t\tif ( deserializedImage instanceof HTMLImageElement ) {\n\n\t\t\t\t\t\t\t\timageArray.push( deserializedImage );\n\n\t\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t\t// special case: handle array of data textures for cube textures\n\n\t\t\t\t\t\t\t\timageArray.push( new DataTexture( deserializedImage.data, deserializedImage.width, deserializedImage.height ) );\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t\timages[ image.uuid ] = new Source( imageArray );\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// load single image\n\n\t\t\t\t\tconst deserializedImage = await deserializeImage( image.url );\n\t\t\t\t\timages[ image.uuid ] = new Source( deserializedImage );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn images;\n\n\t}\n\n\tparseTextures( json, images ) {\n\n\t\tfunction parseConstant( value, type ) {\n\n\t\t\tif ( typeof value === 'number' ) return value;\n\n\t\t\tconsole.warn( 'THREE.ObjectLoader.parseTexture: Constant should be in numeric form.', value );\n\n\t\t\treturn type[ value ];\n\n\t\t}\n\n\t\tconst textures = {};\n\n\t\tif ( json !== undefined ) {\n\n\t\t\tfor ( let i = 0, l = json.length; i < l; i ++ ) {\n\n\t\t\t\tconst data = json[ i ];\n\n\t\t\t\tif ( data.image === undefined ) {\n\n\t\t\t\t\tconsole.warn( 'THREE.ObjectLoader: No \"image\" specified for', data.uuid );\n\n\t\t\t\t}\n\n\t\t\t\tif ( images[ data.image ] === undefined ) {\n\n\t\t\t\t\tconsole.warn( 'THREE.ObjectLoader: Undefined image', data.image );\n\n\t\t\t\t}\n\n\t\t\t\tconst source = images[ data.image ];\n\t\t\t\tconst image = source.data;\n\n\t\t\t\tlet texture;\n\n\t\t\t\tif ( Array.isArray( image ) ) {\n\n\t\t\t\t\ttexture = new CubeTexture();\n\n\t\t\t\t\tif ( image.length === 6 ) texture.needsUpdate = true;\n\n\t\t\t\t} else {\n\n\t\t\t\t\tif ( image && image.data ) {\n\n\t\t\t\t\t\ttexture = new DataTexture();\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\ttexture = new Texture();\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( image ) texture.needsUpdate = true; // textures can have undefined image data\n\n\t\t\t\t}\n\n\t\t\t\ttexture.source = source;\n\n\t\t\t\ttexture.uuid = data.uuid;\n\n\t\t\t\tif ( data.name !== undefined ) texture.name = data.name;\n\n\t\t\t\tif ( data.mapping !== undefined ) texture.mapping = parseConstant( data.mapping, TEXTURE_MAPPING );\n\t\t\t\tif ( data.channel !== undefined ) texture.channel = data.channel;\n\n\t\t\t\tif ( data.offset !== undefined ) texture.offset.fromArray( data.offset );\n\t\t\t\tif ( data.repeat !== undefined ) texture.repeat.fromArray( data.repeat );\n\t\t\t\tif ( data.center !== undefined ) texture.center.fromArray( data.center );\n\t\t\t\tif ( data.rotation !== undefined ) texture.rotation = data.rotation;\n\n\t\t\t\tif ( data.wrap !== undefined ) {\n\n\t\t\t\t\ttexture.wrapS = parseConstant( data.wrap[ 0 ], TEXTURE_WRAPPING );\n\t\t\t\t\ttexture.wrapT = parseConstant( data.wrap[ 1 ], TEXTURE_WRAPPING );\n\n\t\t\t\t}\n\n\t\t\t\tif ( data.format !== undefined ) texture.format = data.format;\n\t\t\t\tif ( data.internalFormat !== undefined ) texture.internalFormat = data.internalFormat;\n\t\t\t\tif ( data.type !== undefined ) texture.type = data.type;\n\t\t\t\tif ( data.colorSpace !== undefined ) texture.colorSpace = data.colorSpace;\n\n\t\t\t\tif ( data.minFilter !== undefined ) texture.minFilter = parseConstant( data.minFilter, TEXTURE_FILTER );\n\t\t\t\tif ( data.magFilter !== undefined ) texture.magFilter = parseConstant( data.magFilter, TEXTURE_FILTER );\n\t\t\t\tif ( data.anisotropy !== undefined ) texture.anisotropy = data.anisotropy;\n\n\t\t\t\tif ( data.flipY !== undefined ) texture.flipY = data.flipY;\n\n\t\t\t\tif ( data.generateMipmaps !== undefined ) texture.generateMipmaps = data.generateMipmaps;\n\t\t\t\tif ( data.premultiplyAlpha !== undefined ) texture.premultiplyAlpha = data.premultiplyAlpha;\n\t\t\t\tif ( data.unpackAlignment !== undefined ) texture.unpackAlignment = data.unpackAlignment;\n\t\t\t\tif ( data.compareFunction !== undefined ) texture.compareFunction = data.compareFunction;\n\n\t\t\t\tif ( data.userData !== undefined ) texture.userData = data.userData;\n\n\t\t\t\ttextures[ data.uuid ] = texture;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn textures;\n\n\t}\n\n\tparseObject( data, geometries, materials, textures, animations ) {\n\n\t\tlet object;\n\n\t\tfunction getGeometry( name ) {\n\n\t\t\tif ( geometries[ name ] === undefined ) {\n\n\t\t\t\tconsole.warn( 'THREE.ObjectLoader: Undefined geometry', name );\n\n\t\t\t}\n\n\t\t\treturn geometries[ name ];\n\n\t\t}\n\n\t\tfunction getMaterial( name ) {\n\n\t\t\tif ( name === undefined ) return undefined;\n\n\t\t\tif ( Array.isArray( name ) ) {\n\n\t\t\t\tconst array = [];\n\n\t\t\t\tfor ( let i = 0, l = name.length; i < l; i ++ ) {\n\n\t\t\t\t\tconst uuid = name[ i ];\n\n\t\t\t\t\tif ( materials[ uuid ] === undefined ) {\n\n\t\t\t\t\t\tconsole.warn( 'THREE.ObjectLoader: Undefined material', uuid );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tarray.push( materials[ uuid ] );\n\n\t\t\t\t}\n\n\t\t\t\treturn array;\n\n\t\t\t}\n\n\t\t\tif ( materials[ name ] === undefined ) {\n\n\t\t\t\tconsole.warn( 'THREE.ObjectLoader: Undefined material', name );\n\n\t\t\t}\n\n\t\t\treturn materials[ name ];\n\n\t\t}\n\n\t\tfunction getTexture( uuid ) {\n\n\t\t\tif ( textures[ uuid ] === undefined ) {\n\n\t\t\t\tconsole.warn( 'THREE.ObjectLoader: Undefined texture', uuid );\n\n\t\t\t}\n\n\t\t\treturn textures[ uuid ];\n\n\t\t}\n\n\t\tlet geometry, material;\n\n\t\tswitch ( data.type ) {\n\n\t\t\tcase 'Scene':\n\n\t\t\t\tobject = new Scene();\n\n\t\t\t\tif ( data.background !== undefined ) {\n\n\t\t\t\t\tif ( Number.isInteger( data.background ) ) {\n\n\t\t\t\t\t\tobject.background = new Color( data.background );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tobject.background = getTexture( data.background );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tif ( data.environment !== undefined ) {\n\n\t\t\t\t\tobject.environment = getTexture( data.environment );\n\n\t\t\t\t}\n\n\t\t\t\tif ( data.fog !== undefined ) {\n\n\t\t\t\t\tif ( data.fog.type === 'Fog' ) {\n\n\t\t\t\t\t\tobject.fog = new Fog( data.fog.color, data.fog.near, data.fog.far );\n\n\t\t\t\t\t} else if ( data.fog.type === 'FogExp2' ) {\n\n\t\t\t\t\t\tobject.fog = new FogExp2( data.fog.color, data.fog.density );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( data.fog.name !== '' ) {\n\n\t\t\t\t\t\tobject.fog.name = data.fog.name;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tif ( data.backgroundBlurriness !== undefined ) object.backgroundBlurriness = data.backgroundBlurriness;\n\t\t\t\tif ( data.backgroundIntensity !== undefined ) object.backgroundIntensity = data.backgroundIntensity;\n\t\t\t\tif ( data.backgroundRotation !== undefined ) object.backgroundRotation.fromArray( data.backgroundRotation );\n\n\t\t\t\tif ( data.environmentIntensity !== undefined ) object.environmentIntensity = data.environmentIntensity;\n\t\t\t\tif ( data.environmentRotation !== undefined ) object.environmentRotation.fromArray( data.environmentRotation );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'PerspectiveCamera':\n\n\t\t\t\tobject = new PerspectiveCamera( data.fov, data.aspect, data.near, data.far );\n\n\t\t\t\tif ( data.focus !== undefined ) object.focus = data.focus;\n\t\t\t\tif ( data.zoom !== undefined ) object.zoom = data.zoom;\n\t\t\t\tif ( data.filmGauge !== undefined ) object.filmGauge = data.filmGauge;\n\t\t\t\tif ( data.filmOffset !== undefined ) object.filmOffset = data.filmOffset;\n\t\t\t\tif ( data.view !== undefined ) object.view = Object.assign( {}, data.view );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'OrthographicCamera':\n\n\t\t\t\tobject = new OrthographicCamera( data.left, data.right, data.top, data.bottom, data.near, data.far );\n\n\t\t\t\tif ( data.zoom !== undefined ) object.zoom = data.zoom;\n\t\t\t\tif ( data.view !== undefined ) object.view = Object.assign( {}, data.view );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'AmbientLight':\n\n\t\t\t\tobject = new AmbientLight( data.color, data.intensity );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'DirectionalLight':\n\n\t\t\t\tobject = new DirectionalLight( data.color, data.intensity );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'PointLight':\n\n\t\t\t\tobject = new PointLight( data.color, data.intensity, data.distance, data.decay );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'RectAreaLight':\n\n\t\t\t\tobject = new RectAreaLight( data.color, data.intensity, data.width, data.height );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'SpotLight':\n\n\t\t\t\tobject = new SpotLight( data.color, data.intensity, data.distance, data.angle, data.penumbra, data.decay );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'HemisphereLight':\n\n\t\t\t\tobject = new HemisphereLight( data.color, data.groundColor, data.intensity );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'LightProbe':\n\n\t\t\t\tobject = new LightProbe().fromJSON( data );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'SkinnedMesh':\n\n\t\t\t\tgeometry = getGeometry( data.geometry );\n\t\t\t \tmaterial = getMaterial( data.material );\n\n\t\t\t\tobject = new SkinnedMesh( geometry, material );\n\n\t\t\t\tif ( data.bindMode !== undefined ) object.bindMode = data.bindMode;\n\t\t\t\tif ( data.bindMatrix !== undefined ) object.bindMatrix.fromArray( data.bindMatrix );\n\t\t\t\tif ( data.skeleton !== undefined ) object.skeleton = data.skeleton;\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'Mesh':\n\n\t\t\t\tgeometry = getGeometry( data.geometry );\n\t\t\t\tmaterial = getMaterial( data.material );\n\n\t\t\t\tobject = new Mesh( geometry, material );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'InstancedMesh':\n\n\t\t\t\tgeometry = getGeometry( data.geometry );\n\t\t\t\tmaterial = getMaterial( data.material );\n\t\t\t\tconst count = data.count;\n\t\t\t\tconst instanceMatrix = data.instanceMatrix;\n\t\t\t\tconst instanceColor = data.instanceColor;\n\n\t\t\t\tobject = new InstancedMesh( geometry, material, count );\n\t\t\t\tobject.instanceMatrix = new InstancedBufferAttribute( new Float32Array( instanceMatrix.array ), 16 );\n\t\t\t\tif ( instanceColor !== undefined ) object.instanceColor = new InstancedBufferAttribute( new Float32Array( instanceColor.array ), instanceColor.itemSize );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'BatchedMesh':\n\n\t\t\t\tgeometry = getGeometry( data.geometry );\n\t\t\t\tmaterial = getMaterial( data.material );\n\n\t\t\t\tobject = new BatchedMesh( data.maxGeometryCount, data.maxVertexCount, data.maxIndexCount, material );\n\t\t\t\tobject.geometry = geometry;\n\t\t\t\tobject.perObjectFrustumCulled = data.perObjectFrustumCulled;\n\t\t\t\tobject.sortObjects = data.sortObjects;\n\n\t\t\t\tobject._drawRanges = data.drawRanges;\n\t\t\t\tobject._reservedRanges = data.reservedRanges;\n\n\t\t\t\tobject._visibility = data.visibility;\n\t\t\t\tobject._active = data.active;\n\t\t\t\tobject._bounds = data.bounds.map( bound => {\n\n\t\t\t\t\tconst box = new Box3();\n\t\t\t\t\tbox.min.fromArray( bound.boxMin );\n\t\t\t\t\tbox.max.fromArray( bound.boxMax );\n\n\t\t\t\t\tconst sphere = new Sphere();\n\t\t\t\t\tsphere.radius = bound.sphereRadius;\n\t\t\t\t\tsphere.center.fromArray( bound.sphereCenter );\n\n\t\t\t\t\treturn {\n\t\t\t\t\t\tboxInitialized: bound.boxInitialized,\n\t\t\t\t\t\tbox: box,\n\n\t\t\t\t\t\tsphereInitialized: bound.sphereInitialized,\n\t\t\t\t\t\tsphere: sphere\n\t\t\t\t\t};\n\n\t\t\t\t} );\n\n\t\t\t\tobject._maxGeometryCount = data.maxGeometryCount;\n\t\t\t\tobject._maxVertexCount = data.maxVertexCount;\n\t\t\t\tobject._maxIndexCount = data.maxIndexCount;\n\n\t\t\t\tobject._geometryInitialized = data.geometryInitialized;\n\t\t\t\tobject._geometryCount = data.geometryCount;\n\n\t\t\t\tobject._matricesTexture = getTexture( data.matricesTexture.uuid );\n\t\t\t\tif ( data.colorsTexture !== undefined ) object._colorsTexture = getTexture( data.colorsTexture.uuid );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'LOD':\n\n\t\t\t\tobject = new LOD();\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'Line':\n\n\t\t\t\tobject = new Line( getGeometry( data.geometry ), getMaterial( data.material ) );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'LineLoop':\n\n\t\t\t\tobject = new LineLoop( getGeometry( data.geometry ), getMaterial( data.material ) );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'LineSegments':\n\n\t\t\t\tobject = new LineSegments( getGeometry( data.geometry ), getMaterial( data.material ) );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'PointCloud':\n\t\t\tcase 'Points':\n\n\t\t\t\tobject = new Points( getGeometry( data.geometry ), getMaterial( data.material ) );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'Sprite':\n\n\t\t\t\tobject = new Sprite( getMaterial( data.material ) );\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'Group':\n\n\t\t\t\tobject = new Group();\n\n\t\t\t\tbreak;\n\n\t\t\tcase 'Bone':\n\n\t\t\t\tobject = new Bone();\n\n\t\t\t\tbreak;\n\n\t\t\tdefault:\n\n\t\t\t\tobject = new Object3D();\n\n\t\t}\n\n\t\tobject.uuid = data.uuid;\n\n\t\tif ( data.name !== undefined ) object.name = data.name;\n\n\t\tif ( data.matrix !== undefined ) {\n\n\t\t\tobject.matrix.fromArray( data.matrix );\n\n\t\t\tif ( data.matrixAutoUpdate !== undefined ) object.matrixAutoUpdate = data.matrixAutoUpdate;\n\t\t\tif ( object.matrixAutoUpdate ) object.matrix.decompose( object.position, object.quaternion, object.scale );\n\n\t\t} else {\n\n\t\t\tif ( data.position !== undefined ) object.position.fromArray( data.position );\n\t\t\tif ( data.rotation !== undefined ) object.rotation.fromArray( data.rotation );\n\t\t\tif ( data.quaternion !== undefined ) object.quaternion.fromArray( data.quaternion );\n\t\t\tif ( data.scale !== undefined ) object.scale.fromArray( data.scale );\n\n\t\t}\n\n\t\tif ( data.up !== undefined ) object.up.fromArray( data.up );\n\n\t\tif ( data.castShadow !== undefined ) object.castShadow = data.castShadow;\n\t\tif ( data.receiveShadow !== undefined ) object.receiveShadow = data.receiveShadow;\n\n\t\tif ( data.shadow ) {\n\n\t\t\tif ( data.shadow.bias !== undefined ) object.shadow.bias = data.shadow.bias;\n\t\t\tif ( data.shadow.normalBias !== undefined ) object.shadow.normalBias = data.shadow.normalBias;\n\t\t\tif ( data.shadow.radius !== undefined ) object.shadow.radius = data.shadow.radius;\n\t\t\tif ( data.shadow.mapSize !== undefined ) object.shadow.mapSize.fromArray( data.shadow.mapSize );\n\t\t\tif ( data.shadow.camera !== undefined ) object.shadow.camera = this.parseObject( data.shadow.camera );\n\n\t\t}\n\n\t\tif ( data.visible !== undefined ) object.visible = data.visible;\n\t\tif ( data.frustumCulled !== undefined ) object.frustumCulled = data.frustumCulled;\n\t\tif ( data.renderOrder !== undefined ) object.renderOrder = data.renderOrder;\n\t\tif ( data.userData !== undefined ) object.userData = data.userData;\n\t\tif ( data.layers !== undefined ) object.layers.mask = data.layers;\n\n\t\tif ( data.children !== undefined ) {\n\n\t\t\tconst children = data.children;\n\n\t\t\tfor ( let i = 0; i < children.length; i ++ ) {\n\n\t\t\t\tobject.add( this.parseObject( children[ i ], geometries, materials, textures, animations ) );\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( data.animations !== undefined ) {\n\n\t\t\tconst objectAnimations = data.animations;\n\n\t\t\tfor ( let i = 0; i < objectAnimations.length; i ++ ) {\n\n\t\t\t\tconst uuid = objectAnimations[ i ];\n\n\t\t\t\tobject.animations.push( animations[ uuid ] );\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( data.type === 'LOD' ) {\n\n\t\t\tif ( data.autoUpdate !== undefined ) object.autoUpdate = data.autoUpdate;\n\n\t\t\tconst levels = data.levels;\n\n\t\t\tfor ( let l = 0; l < levels.length; l ++ ) {\n\n\t\t\t\tconst level = levels[ l ];\n\t\t\t\tconst child = object.getObjectByProperty( 'uuid', level.object );\n\n\t\t\t\tif ( child !== undefined ) {\n\n\t\t\t\t\tobject.addLevel( child, level.distance, level.hysteresis );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn object;\n\n\t}\n\n\tbindSkeletons( object, skeletons ) {\n\n\t\tif ( Object.keys( skeletons ).length === 0 ) return;\n\n\t\tobject.traverse( function ( child ) {\n\n\t\t\tif ( child.isSkinnedMesh === true && child.skeleton !== undefined ) {\n\n\t\t\t\tconst skeleton = skeletons[ child.skeleton ];\n\n\t\t\t\tif ( skeleton === undefined ) {\n\n\t\t\t\t\tconsole.warn( 'THREE.ObjectLoader: No skeleton found with UUID:', child.skeleton );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tchild.bind( skeleton, child.bindMatrix );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} );\n\n\t}\n\n}\n\nconst TEXTURE_MAPPING = {\n\tUVMapping: UVMapping,\n\tCubeReflectionMapping: CubeReflectionMapping,\n\tCubeRefractionMapping: CubeRefractionMapping,\n\tEquirectangularReflectionMapping: EquirectangularReflectionMapping,\n\tEquirectangularRefractionMapping: EquirectangularRefractionMapping,\n\tCubeUVReflectionMapping: CubeUVReflectionMapping\n};\n\nconst TEXTURE_WRAPPING = {\n\tRepeatWrapping: RepeatWrapping,\n\tClampToEdgeWrapping: ClampToEdgeWrapping,\n\tMirroredRepeatWrapping: MirroredRepeatWrapping\n};\n\nconst TEXTURE_FILTER = {\n\tNearestFilter: NearestFilter,\n\tNearestMipmapNearestFilter: NearestMipmapNearestFilter,\n\tNearestMipmapLinearFilter: NearestMipmapLinearFilter,\n\tLinearFilter: LinearFilter,\n\tLinearMipmapNearestFilter: LinearMipmapNearestFilter,\n\tLinearMipmapLinearFilter: LinearMipmapLinearFilter\n};\n\nclass ImageBitmapLoader extends Loader {\n\n\tconstructor( manager ) {\n\n\t\tsuper( manager );\n\n\t\tthis.isImageBitmapLoader = true;\n\n\t\tif ( typeof createImageBitmap === 'undefined' ) {\n\n\t\t\tconsole.warn( 'THREE.ImageBitmapLoader: createImageBitmap() not supported.' );\n\n\t\t}\n\n\t\tif ( typeof fetch === 'undefined' ) {\n\n\t\t\tconsole.warn( 'THREE.ImageBitmapLoader: fetch() not supported.' );\n\n\t\t}\n\n\t\tthis.options = { premultiplyAlpha: 'none' };\n\n\t}\n\n\tsetOptions( options ) {\n\n\t\tthis.options = options;\n\n\t\treturn this;\n\n\t}\n\n\tload( url, onLoad, onProgress, onError ) {\n\n\t\tif ( url === undefined ) url = '';\n\n\t\tif ( this.path !== undefined ) url = this.path + url;\n\n\t\turl = this.manager.resolveURL( url );\n\n\t\tconst scope = this;\n\n\t\tconst cached = Cache.get( url );\n\n\t\tif ( cached !== undefined ) {\n\n\t\t\tscope.manager.itemStart( url );\n\n\t\t\t// If cached is a promise, wait for it to resolve\n\t\t\tif ( cached.then ) {\n\n\t\t\t\tcached.then( imageBitmap => {\n\n\t\t\t\t\tif ( onLoad ) onLoad( imageBitmap );\n\n\t\t\t\t\tscope.manager.itemEnd( url );\n\n\t\t\t\t} ).catch( e => {\n\n\t\t\t\t\tif ( onError ) onError( e );\n\n\t\t\t\t} );\n\t\t\t\treturn;\n\n\t\t\t}\n\n\t\t\t// If cached is not a promise (i.e., it's already an imageBitmap)\n\t\t\tsetTimeout( function () {\n\n\t\t\t\tif ( onLoad ) onLoad( cached );\n\n\t\t\t\tscope.manager.itemEnd( url );\n\n\t\t\t}, 0 );\n\n\t\t\treturn cached;\n\n\t\t}\n\n\t\tconst fetchOptions = {};\n\t\tfetchOptions.credentials = ( this.crossOrigin === 'anonymous' ) ? 'same-origin' : 'include';\n\t\tfetchOptions.headers = this.requestHeader;\n\n\t\tconst promise = fetch( url, fetchOptions ).then( function ( res ) {\n\n\t\t\treturn res.blob();\n\n\t\t} ).then( function ( blob ) {\n\n\t\t\treturn createImageBitmap( blob, Object.assign( scope.options, { colorSpaceConversion: 'none' } ) );\n\n\t\t} ).then( function ( imageBitmap ) {\n\n\t\t\tCache.add( url, imageBitmap );\n\n\t\t\tif ( onLoad ) onLoad( imageBitmap );\n\n\t\t\tscope.manager.itemEnd( url );\n\n\t\t\treturn imageBitmap;\n\n\t\t} ).catch( function ( e ) {\n\n\t\t\tif ( onError ) onError( e );\n\n\t\t\tCache.remove( url );\n\n\t\t\tscope.manager.itemError( url );\n\t\t\tscope.manager.itemEnd( url );\n\n\t\t} );\n\n\t\tCache.add( url, promise );\n\t\tscope.manager.itemStart( url );\n\n\t}\n\n}\n\nlet _context;\n\nclass AudioContext {\n\n\tstatic getContext() {\n\n\t\tif ( _context === undefined ) {\n\n\t\t\t_context = new ( window.AudioContext || window.webkitAudioContext )();\n\n\t\t}\n\n\t\treturn _context;\n\n\t}\n\n\tstatic setContext( value ) {\n\n\t\t_context = value;\n\n\t}\n\n}\n\nclass AudioLoader extends Loader {\n\n\tconstructor( manager ) {\n\n\t\tsuper( manager );\n\n\t}\n\n\tload( url, onLoad, onProgress, onError ) {\n\n\t\tconst scope = this;\n\n\t\tconst loader = new FileLoader( this.manager );\n\t\tloader.setResponseType( 'arraybuffer' );\n\t\tloader.setPath( this.path );\n\t\tloader.setRequestHeader( this.requestHeader );\n\t\tloader.setWithCredentials( this.withCredentials );\n\t\tloader.load( url, function ( buffer ) {\n\n\t\t\ttry {\n\n\t\t\t\t// Create a copy of the buffer. The `decodeAudioData` method\n\t\t\t\t// detaches the buffer when complete, preventing reuse.\n\t\t\t\tconst bufferCopy = buffer.slice( 0 );\n\n\t\t\t\tconst context = AudioContext.getContext();\n\t\t\t\tcontext.decodeAudioData( bufferCopy, function ( audioBuffer ) {\n\n\t\t\t\t\tonLoad( audioBuffer );\n\n\t\t\t\t} ).catch( handleError );\n\n\t\t\t} catch ( e ) {\n\n\t\t\t\thandleError( e );\n\n\t\t\t}\n\n\t\t}, onProgress, onError );\n\n\t\tfunction handleError( e ) {\n\n\t\t\tif ( onError ) {\n\n\t\t\t\tonError( e );\n\n\t\t\t} else {\n\n\t\t\t\tconsole.error( e );\n\n\t\t\t}\n\n\t\t\tscope.manager.itemError( url );\n\n\t\t}\n\n\t}\n\n}\n\nconst _eyeRight = /*@__PURE__*/ new Matrix4();\nconst _eyeLeft = /*@__PURE__*/ new Matrix4();\nconst _projectionMatrix = /*@__PURE__*/ new Matrix4();\n\nclass StereoCamera {\n\n\tconstructor() {\n\n\t\tthis.type = 'StereoCamera';\n\n\t\tthis.aspect = 1;\n\n\t\tthis.eyeSep = 0.064;\n\n\t\tthis.cameraL = new PerspectiveCamera();\n\t\tthis.cameraL.layers.enable( 1 );\n\t\tthis.cameraL.matrixAutoUpdate = false;\n\n\t\tthis.cameraR = new PerspectiveCamera();\n\t\tthis.cameraR.layers.enable( 2 );\n\t\tthis.cameraR.matrixAutoUpdate = false;\n\n\t\tthis._cache = {\n\t\t\tfocus: null,\n\t\t\tfov: null,\n\t\t\taspect: null,\n\t\t\tnear: null,\n\t\t\tfar: null,\n\t\t\tzoom: null,\n\t\t\teyeSep: null\n\t\t};\n\n\t}\n\n\tupdate( camera ) {\n\n\t\tconst cache = this._cache;\n\n\t\tconst needsUpdate = cache.focus !== camera.focus || cache.fov !== camera.fov ||\n\t\t\tcache.aspect !== camera.aspect * this.aspect || cache.near !== camera.near ||\n\t\t\tcache.far !== camera.far || cache.zoom !== camera.zoom || cache.eyeSep !== this.eyeSep;\n\n\t\tif ( needsUpdate ) {\n\n\t\t\tcache.focus = camera.focus;\n\t\t\tcache.fov = camera.fov;\n\t\t\tcache.aspect = camera.aspect * this.aspect;\n\t\t\tcache.near = camera.near;\n\t\t\tcache.far = camera.far;\n\t\t\tcache.zoom = camera.zoom;\n\t\t\tcache.eyeSep = this.eyeSep;\n\n\t\t\t// Off-axis stereoscopic effect based on\n\t\t\t// http://paulbourke.net/stereographics/stereorender/\n\n\t\t\t_projectionMatrix.copy( camera.projectionMatrix );\n\t\t\tconst eyeSepHalf = cache.eyeSep / 2;\n\t\t\tconst eyeSepOnProjection = eyeSepHalf * cache.near / cache.focus;\n\t\t\tconst ymax = ( cache.near * Math.tan( DEG2RAD * cache.fov * 0.5 ) ) / cache.zoom;\n\t\t\tlet xmin, xmax;\n\n\t\t\t// translate xOffset\n\n\t\t\t_eyeLeft.elements[ 12 ] = - eyeSepHalf;\n\t\t\t_eyeRight.elements[ 12 ] = eyeSepHalf;\n\n\t\t\t// for left eye\n\n\t\t\txmin = - ymax * cache.aspect + eyeSepOnProjection;\n\t\t\txmax = ymax * cache.aspect + eyeSepOnProjection;\n\n\t\t\t_projectionMatrix.elements[ 0 ] = 2 * cache.near / ( xmax - xmin );\n\t\t\t_projectionMatrix.elements[ 8 ] = ( xmax + xmin ) / ( xmax - xmin );\n\n\t\t\tthis.cameraL.projectionMatrix.copy( _projectionMatrix );\n\n\t\t\t// for right eye\n\n\t\t\txmin = - ymax * cache.aspect - eyeSepOnProjection;\n\t\t\txmax = ymax * cache.aspect - eyeSepOnProjection;\n\n\t\t\t_projectionMatrix.elements[ 0 ] = 2 * cache.near / ( xmax - xmin );\n\t\t\t_projectionMatrix.elements[ 8 ] = ( xmax + xmin ) / ( xmax - xmin );\n\n\t\t\tthis.cameraR.projectionMatrix.copy( _projectionMatrix );\n\n\t\t}\n\n\t\tthis.cameraL.matrixWorld.copy( camera.matrixWorld ).multiply( _eyeLeft );\n\t\tthis.cameraR.matrixWorld.copy( camera.matrixWorld ).multiply( _eyeRight );\n\n\t}\n\n}\n\nclass Clock {\n\n\tconstructor( autoStart = true ) {\n\n\t\tthis.autoStart = autoStart;\n\n\t\tthis.startTime = 0;\n\t\tthis.oldTime = 0;\n\t\tthis.elapsedTime = 0;\n\n\t\tthis.running = false;\n\n\t}\n\n\tstart() {\n\n\t\tthis.startTime = now();\n\n\t\tthis.oldTime = this.startTime;\n\t\tthis.elapsedTime = 0;\n\t\tthis.running = true;\n\n\t}\n\n\tstop() {\n\n\t\tthis.getElapsedTime();\n\t\tthis.running = false;\n\t\tthis.autoStart = false;\n\n\t}\n\n\tgetElapsedTime() {\n\n\t\tthis.getDelta();\n\t\treturn this.elapsedTime;\n\n\t}\n\n\tgetDelta() {\n\n\t\tlet diff = 0;\n\n\t\tif ( this.autoStart && ! this.running ) {\n\n\t\t\tthis.start();\n\t\t\treturn 0;\n\n\t\t}\n\n\t\tif ( this.running ) {\n\n\t\t\tconst newTime = now();\n\n\t\t\tdiff = ( newTime - this.oldTime ) / 1000;\n\t\t\tthis.oldTime = newTime;\n\n\t\t\tthis.elapsedTime += diff;\n\n\t\t}\n\n\t\treturn diff;\n\n\t}\n\n}\n\nfunction now() {\n\n\treturn ( typeof performance === 'undefined' ? Date : performance ).now(); // see #10732\n\n}\n\nconst _position$1 = /*@__PURE__*/ new Vector3();\nconst _quaternion$1 = /*@__PURE__*/ new Quaternion();\nconst _scale$1 = /*@__PURE__*/ new Vector3();\nconst _orientation$1 = /*@__PURE__*/ new Vector3();\n\nclass AudioListener extends Object3D {\n\n\tconstructor() {\n\n\t\tsuper();\n\n\t\tthis.type = 'AudioListener';\n\n\t\tthis.context = AudioContext.getContext();\n\n\t\tthis.gain = this.context.createGain();\n\t\tthis.gain.connect( this.context.destination );\n\n\t\tthis.filter = null;\n\n\t\tthis.timeDelta = 0;\n\n\t\t// private\n\n\t\tthis._clock = new Clock();\n\n\t}\n\n\tgetInput() {\n\n\t\treturn this.gain;\n\n\t}\n\n\tremoveFilter() {\n\n\t\tif ( this.filter !== null ) {\n\n\t\t\tthis.gain.disconnect( this.filter );\n\t\t\tthis.filter.disconnect( this.context.destination );\n\t\t\tthis.gain.connect( this.context.destination );\n\t\t\tthis.filter = null;\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tgetFilter() {\n\n\t\treturn this.filter;\n\n\t}\n\n\tsetFilter( value ) {\n\n\t\tif ( this.filter !== null ) {\n\n\t\t\tthis.gain.disconnect( this.filter );\n\t\t\tthis.filter.disconnect( this.context.destination );\n\n\t\t} else {\n\n\t\t\tthis.gain.disconnect( this.context.destination );\n\n\t\t}\n\n\t\tthis.filter = value;\n\t\tthis.gain.connect( this.filter );\n\t\tthis.filter.connect( this.context.destination );\n\n\t\treturn this;\n\n\t}\n\n\tgetMasterVolume() {\n\n\t\treturn this.gain.gain.value;\n\n\t}\n\n\tsetMasterVolume( value ) {\n\n\t\tthis.gain.gain.setTargetAtTime( value, this.context.currentTime, 0.01 );\n\n\t\treturn this;\n\n\t}\n\n\tupdateMatrixWorld( force ) {\n\n\t\tsuper.updateMatrixWorld( force );\n\n\t\tconst listener = this.context.listener;\n\t\tconst up = this.up;\n\n\t\tthis.timeDelta = this._clock.getDelta();\n\n\t\tthis.matrixWorld.decompose( _position$1, _quaternion$1, _scale$1 );\n\n\t\t_orientation$1.set( 0, 0, - 1 ).applyQuaternion( _quaternion$1 );\n\n\t\tif ( listener.positionX ) {\n\n\t\t\t// code path for Chrome (see #14393)\n\n\t\t\tconst endTime = this.context.currentTime + this.timeDelta;\n\n\t\t\tlistener.positionX.linearRampToValueAtTime( _position$1.x, endTime );\n\t\t\tlistener.positionY.linearRampToValueAtTime( _position$1.y, endTime );\n\t\t\tlistener.positionZ.linearRampToValueAtTime( _position$1.z, endTime );\n\t\t\tlistener.forwardX.linearRampToValueAtTime( _orientation$1.x, endTime );\n\t\t\tlistener.forwardY.linearRampToValueAtTime( _orientation$1.y, endTime );\n\t\t\tlistener.forwardZ.linearRampToValueAtTime( _orientation$1.z, endTime );\n\t\t\tlistener.upX.linearRampToValueAtTime( up.x, endTime );\n\t\t\tlistener.upY.linearRampToValueAtTime( up.y, endTime );\n\t\t\tlistener.upZ.linearRampToValueAtTime( up.z, endTime );\n\n\t\t} else {\n\n\t\t\tlistener.setPosition( _position$1.x, _position$1.y, _position$1.z );\n\t\t\tlistener.setOrientation( _orientation$1.x, _orientation$1.y, _orientation$1.z, up.x, up.y, up.z );\n\n\t\t}\n\n\t}\n\n}\n\nclass Audio extends Object3D {\n\n\tconstructor( listener ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'Audio';\n\n\t\tthis.listener = listener;\n\t\tthis.context = listener.context;\n\n\t\tthis.gain = this.context.createGain();\n\t\tthis.gain.connect( listener.getInput() );\n\n\t\tthis.autoplay = false;\n\n\t\tthis.buffer = null;\n\t\tthis.detune = 0;\n\t\tthis.loop = false;\n\t\tthis.loopStart = 0;\n\t\tthis.loopEnd = 0;\n\t\tthis.offset = 0;\n\t\tthis.duration = undefined;\n\t\tthis.playbackRate = 1;\n\t\tthis.isPlaying = false;\n\t\tthis.hasPlaybackControl = true;\n\t\tthis.source = null;\n\t\tthis.sourceType = 'empty';\n\n\t\tthis._startedAt = 0;\n\t\tthis._progress = 0;\n\t\tthis._connected = false;\n\n\t\tthis.filters = [];\n\n\t}\n\n\tgetOutput() {\n\n\t\treturn this.gain;\n\n\t}\n\n\tsetNodeSource( audioNode ) {\n\n\t\tthis.hasPlaybackControl = false;\n\t\tthis.sourceType = 'audioNode';\n\t\tthis.source = audioNode;\n\t\tthis.connect();\n\n\t\treturn this;\n\n\t}\n\n\tsetMediaElementSource( mediaElement ) {\n\n\t\tthis.hasPlaybackControl = false;\n\t\tthis.sourceType = 'mediaNode';\n\t\tthis.source = this.context.createMediaElementSource( mediaElement );\n\t\tthis.connect();\n\n\t\treturn this;\n\n\t}\n\n\tsetMediaStreamSource( mediaStream ) {\n\n\t\tthis.hasPlaybackControl = false;\n\t\tthis.sourceType = 'mediaStreamNode';\n\t\tthis.source = this.context.createMediaStreamSource( mediaStream );\n\t\tthis.connect();\n\n\t\treturn this;\n\n\t}\n\n\tsetBuffer( audioBuffer ) {\n\n\t\tthis.buffer = audioBuffer;\n\t\tthis.sourceType = 'buffer';\n\n\t\tif ( this.autoplay ) this.play();\n\n\t\treturn this;\n\n\t}\n\n\tplay( delay = 0 ) {\n\n\t\tif ( this.isPlaying === true ) {\n\n\t\t\tconsole.warn( 'THREE.Audio: Audio is already playing.' );\n\t\t\treturn;\n\n\t\t}\n\n\t\tif ( this.hasPlaybackControl === false ) {\n\n\t\t\tconsole.warn( 'THREE.Audio: this Audio has no playback control.' );\n\t\t\treturn;\n\n\t\t}\n\n\t\tthis._startedAt = this.context.currentTime + delay;\n\n\t\tconst source = this.context.createBufferSource();\n\t\tsource.buffer = this.buffer;\n\t\tsource.loop = this.loop;\n\t\tsource.loopStart = this.loopStart;\n\t\tsource.loopEnd = this.loopEnd;\n\t\tsource.onended = this.onEnded.bind( this );\n\t\tsource.start( this._startedAt, this._progress + this.offset, this.duration );\n\n\t\tthis.isPlaying = true;\n\n\t\tthis.source = source;\n\n\t\tthis.setDetune( this.detune );\n\t\tthis.setPlaybackRate( this.playbackRate );\n\n\t\treturn this.connect();\n\n\t}\n\n\tpause() {\n\n\t\tif ( this.hasPlaybackControl === false ) {\n\n\t\t\tconsole.warn( 'THREE.Audio: this Audio has no playback control.' );\n\t\t\treturn;\n\n\t\t}\n\n\t\tif ( this.isPlaying === true ) {\n\n\t\t\t// update current progress\n\n\t\t\tthis._progress += Math.max( this.context.currentTime - this._startedAt, 0 ) * this.playbackRate;\n\n\t\t\tif ( this.loop === true ) {\n\n\t\t\t\t// ensure _progress does not exceed duration with looped audios\n\n\t\t\t\tthis._progress = this._progress % ( this.duration || this.buffer.duration );\n\n\t\t\t}\n\n\t\t\tthis.source.stop();\n\t\t\tthis.source.onended = null;\n\n\t\t\tthis.isPlaying = false;\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tstop() {\n\n\t\tif ( this.hasPlaybackControl === false ) {\n\n\t\t\tconsole.warn( 'THREE.Audio: this Audio has no playback control.' );\n\t\t\treturn;\n\n\t\t}\n\n\t\tthis._progress = 0;\n\n\t\tif ( this.source !== null ) {\n\n\t\t\tthis.source.stop();\n\t\t\tthis.source.onended = null;\n\n\t\t}\n\n\t\tthis.isPlaying = false;\n\n\t\treturn this;\n\n\t}\n\n\tconnect() {\n\n\t\tif ( this.filters.length > 0 ) {\n\n\t\t\tthis.source.connect( this.filters[ 0 ] );\n\n\t\t\tfor ( let i = 1, l = this.filters.length; i < l; i ++ ) {\n\n\t\t\t\tthis.filters[ i - 1 ].connect( this.filters[ i ] );\n\n\t\t\t}\n\n\t\t\tthis.filters[ this.filters.length - 1 ].connect( this.getOutput() );\n\n\t\t} else {\n\n\t\t\tthis.source.connect( this.getOutput() );\n\n\t\t}\n\n\t\tthis._connected = true;\n\n\t\treturn this;\n\n\t}\n\n\tdisconnect() {\n\n\t\tif ( this._connected === false ) {\n\n\t\t\treturn;\n\n\t\t}\n\n\t\tif ( this.filters.length > 0 ) {\n\n\t\t\tthis.source.disconnect( this.filters[ 0 ] );\n\n\t\t\tfor ( let i = 1, l = this.filters.length; i < l; i ++ ) {\n\n\t\t\t\tthis.filters[ i - 1 ].disconnect( this.filters[ i ] );\n\n\t\t\t}\n\n\t\t\tthis.filters[ this.filters.length - 1 ].disconnect( this.getOutput() );\n\n\t\t} else {\n\n\t\t\tthis.source.disconnect( this.getOutput() );\n\n\t\t}\n\n\t\tthis._connected = false;\n\n\t\treturn this;\n\n\t}\n\n\tgetFilters() {\n\n\t\treturn this.filters;\n\n\t}\n\n\tsetFilters( value ) {\n\n\t\tif ( ! value ) value = [];\n\n\t\tif ( this._connected === true ) {\n\n\t\t\tthis.disconnect();\n\t\t\tthis.filters = value.slice();\n\t\t\tthis.connect();\n\n\t\t} else {\n\n\t\t\tthis.filters = value.slice();\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tsetDetune( value ) {\n\n\t\tthis.detune = value;\n\n\t\tif ( this.isPlaying === true && this.source.detune !== undefined ) {\n\n\t\t\tthis.source.detune.setTargetAtTime( this.detune, this.context.currentTime, 0.01 );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tgetDetune() {\n\n\t\treturn this.detune;\n\n\t}\n\n\tgetFilter() {\n\n\t\treturn this.getFilters()[ 0 ];\n\n\t}\n\n\tsetFilter( filter ) {\n\n\t\treturn this.setFilters( filter ? [ filter ] : [] );\n\n\t}\n\n\tsetPlaybackRate( value ) {\n\n\t\tif ( this.hasPlaybackControl === false ) {\n\n\t\t\tconsole.warn( 'THREE.Audio: this Audio has no playback control.' );\n\t\t\treturn;\n\n\t\t}\n\n\t\tthis.playbackRate = value;\n\n\t\tif ( this.isPlaying === true ) {\n\n\t\t\tthis.source.playbackRate.setTargetAtTime( this.playbackRate, this.context.currentTime, 0.01 );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tgetPlaybackRate() {\n\n\t\treturn this.playbackRate;\n\n\t}\n\n\tonEnded() {\n\n\t\tthis.isPlaying = false;\n\n\t}\n\n\tgetLoop() {\n\n\t\tif ( this.hasPlaybackControl === false ) {\n\n\t\t\tconsole.warn( 'THREE.Audio: this Audio has no playback control.' );\n\t\t\treturn false;\n\n\t\t}\n\n\t\treturn this.loop;\n\n\t}\n\n\tsetLoop( value ) {\n\n\t\tif ( this.hasPlaybackControl === false ) {\n\n\t\t\tconsole.warn( 'THREE.Audio: this Audio has no playback control.' );\n\t\t\treturn;\n\n\t\t}\n\n\t\tthis.loop = value;\n\n\t\tif ( this.isPlaying === true ) {\n\n\t\t\tthis.source.loop = this.loop;\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tsetLoopStart( value ) {\n\n\t\tthis.loopStart = value;\n\n\t\treturn this;\n\n\t}\n\n\tsetLoopEnd( value ) {\n\n\t\tthis.loopEnd = value;\n\n\t\treturn this;\n\n\t}\n\n\tgetVolume() {\n\n\t\treturn this.gain.gain.value;\n\n\t}\n\n\tsetVolume( value ) {\n\n\t\tthis.gain.gain.setTargetAtTime( value, this.context.currentTime, 0.01 );\n\n\t\treturn this;\n\n\t}\n\n}\n\nconst _position = /*@__PURE__*/ new Vector3();\nconst _quaternion = /*@__PURE__*/ new Quaternion();\nconst _scale = /*@__PURE__*/ new Vector3();\nconst _orientation = /*@__PURE__*/ new Vector3();\n\nclass PositionalAudio extends Audio {\n\n\tconstructor( listener ) {\n\n\t\tsuper( listener );\n\n\t\tthis.panner = this.context.createPanner();\n\t\tthis.panner.panningModel = 'HRTF';\n\t\tthis.panner.connect( this.gain );\n\n\t}\n\n\tconnect() {\n\n\t\tsuper.connect();\n\n\t\tthis.panner.connect( this.gain );\n\n\t}\n\n\tdisconnect() {\n\n\t\tsuper.disconnect();\n\n\t\tthis.panner.disconnect( this.gain );\n\n\t}\n\n\tgetOutput() {\n\n\t\treturn this.panner;\n\n\t}\n\n\tgetRefDistance() {\n\n\t\treturn this.panner.refDistance;\n\n\t}\n\n\tsetRefDistance( value ) {\n\n\t\tthis.panner.refDistance = value;\n\n\t\treturn this;\n\n\t}\n\n\tgetRolloffFactor() {\n\n\t\treturn this.panner.rolloffFactor;\n\n\t}\n\n\tsetRolloffFactor( value ) {\n\n\t\tthis.panner.rolloffFactor = value;\n\n\t\treturn this;\n\n\t}\n\n\tgetDistanceModel() {\n\n\t\treturn this.panner.distanceModel;\n\n\t}\n\n\tsetDistanceModel( value ) {\n\n\t\tthis.panner.distanceModel = value;\n\n\t\treturn this;\n\n\t}\n\n\tgetMaxDistance() {\n\n\t\treturn this.panner.maxDistance;\n\n\t}\n\n\tsetMaxDistance( value ) {\n\n\t\tthis.panner.maxDistance = value;\n\n\t\treturn this;\n\n\t}\n\n\tsetDirectionalCone( coneInnerAngle, coneOuterAngle, coneOuterGain ) {\n\n\t\tthis.panner.coneInnerAngle = coneInnerAngle;\n\t\tthis.panner.coneOuterAngle = coneOuterAngle;\n\t\tthis.panner.coneOuterGain = coneOuterGain;\n\n\t\treturn this;\n\n\t}\n\n\tupdateMatrixWorld( force ) {\n\n\t\tsuper.updateMatrixWorld( force );\n\n\t\tif ( this.hasPlaybackControl === true && this.isPlaying === false ) return;\n\n\t\tthis.matrixWorld.decompose( _position, _quaternion, _scale );\n\n\t\t_orientation.set( 0, 0, 1 ).applyQuaternion( _quaternion );\n\n\t\tconst panner = this.panner;\n\n\t\tif ( panner.positionX ) {\n\n\t\t\t// code path for Chrome and Firefox (see #14393)\n\n\t\t\tconst endTime = this.context.currentTime + this.listener.timeDelta;\n\n\t\t\tpanner.positionX.linearRampToValueAtTime( _position.x, endTime );\n\t\t\tpanner.positionY.linearRampToValueAtTime( _position.y, endTime );\n\t\t\tpanner.positionZ.linearRampToValueAtTime( _position.z, endTime );\n\t\t\tpanner.orientationX.linearRampToValueAtTime( _orientation.x, endTime );\n\t\t\tpanner.orientationY.linearRampToValueAtTime( _orientation.y, endTime );\n\t\t\tpanner.orientationZ.linearRampToValueAtTime( _orientation.z, endTime );\n\n\t\t} else {\n\n\t\t\tpanner.setPosition( _position.x, _position.y, _position.z );\n\t\t\tpanner.setOrientation( _orientation.x, _orientation.y, _orientation.z );\n\n\t\t}\n\n\t}\n\n}\n\nclass AudioAnalyser {\n\n\tconstructor( audio, fftSize = 2048 ) {\n\n\t\tthis.analyser = audio.context.createAnalyser();\n\t\tthis.analyser.fftSize = fftSize;\n\n\t\tthis.data = new Uint8Array( this.analyser.frequencyBinCount );\n\n\t\taudio.getOutput().connect( this.analyser );\n\n\t}\n\n\n\tgetFrequencyData() {\n\n\t\tthis.analyser.getByteFrequencyData( this.data );\n\n\t\treturn this.data;\n\n\t}\n\n\tgetAverageFrequency() {\n\n\t\tlet value = 0;\n\t\tconst data = this.getFrequencyData();\n\n\t\tfor ( let i = 0; i < data.length; i ++ ) {\n\n\t\t\tvalue += data[ i ];\n\n\t\t}\n\n\t\treturn value / data.length;\n\n\t}\n\n}\n\nclass PropertyMixer {\n\n\tconstructor( binding, typeName, valueSize ) {\n\n\t\tthis.binding = binding;\n\t\tthis.valueSize = valueSize;\n\n\t\tlet mixFunction,\n\t\t\tmixFunctionAdditive,\n\t\t\tsetIdentity;\n\n\t\t// buffer layout: [ incoming | accu0 | accu1 | orig | addAccu | (optional work) ]\n\t\t//\n\t\t// interpolators can use .buffer as their .result\n\t\t// the data then goes to 'incoming'\n\t\t//\n\t\t// 'accu0' and 'accu1' are used frame-interleaved for\n\t\t// the cumulative result and are compared to detect\n\t\t// changes\n\t\t//\n\t\t// 'orig' stores the original state of the property\n\t\t//\n\t\t// 'add' is used for additive cumulative results\n\t\t//\n\t\t// 'work' is optional and is only present for quaternion types. It is used\n\t\t// to store intermediate quaternion multiplication results\n\n\t\tswitch ( typeName ) {\n\n\t\t\tcase 'quaternion':\n\t\t\t\tmixFunction = this._slerp;\n\t\t\t\tmixFunctionAdditive = this._slerpAdditive;\n\t\t\t\tsetIdentity = this._setAdditiveIdentityQuaternion;\n\n\t\t\t\tthis.buffer = new Float64Array( valueSize * 6 );\n\t\t\t\tthis._workIndex = 5;\n\t\t\t\tbreak;\n\n\t\t\tcase 'string':\n\t\t\tcase 'bool':\n\t\t\t\tmixFunction = this._select;\n\n\t\t\t\t// Use the regular mix function and for additive on these types,\n\t\t\t\t// additive is not relevant for non-numeric types\n\t\t\t\tmixFunctionAdditive = this._select;\n\n\t\t\t\tsetIdentity = this._setAdditiveIdentityOther;\n\n\t\t\t\tthis.buffer = new Array( valueSize * 5 );\n\t\t\t\tbreak;\n\n\t\t\tdefault:\n\t\t\t\tmixFunction = this._lerp;\n\t\t\t\tmixFunctionAdditive = this._lerpAdditive;\n\t\t\t\tsetIdentity = this._setAdditiveIdentityNumeric;\n\n\t\t\t\tthis.buffer = new Float64Array( valueSize * 5 );\n\n\t\t}\n\n\t\tthis._mixBufferRegion = mixFunction;\n\t\tthis._mixBufferRegionAdditive = mixFunctionAdditive;\n\t\tthis._setIdentity = setIdentity;\n\t\tthis._origIndex = 3;\n\t\tthis._addIndex = 4;\n\n\t\tthis.cumulativeWeight = 0;\n\t\tthis.cumulativeWeightAdditive = 0;\n\n\t\tthis.useCount = 0;\n\t\tthis.referenceCount = 0;\n\n\t}\n\n\t// accumulate data in the 'incoming' region into 'accu'\n\taccumulate( accuIndex, weight ) {\n\n\t\t// note: happily accumulating nothing when weight = 0, the caller knows\n\t\t// the weight and shouldn't have made the call in the first place\n\n\t\tconst buffer = this.buffer,\n\t\t\tstride = this.valueSize,\n\t\t\toffset = accuIndex * stride + stride;\n\n\t\tlet currentWeight = this.cumulativeWeight;\n\n\t\tif ( currentWeight === 0 ) {\n\n\t\t\t// accuN := incoming * weight\n\n\t\t\tfor ( let i = 0; i !== stride; ++ i ) {\n\n\t\t\t\tbuffer[ offset + i ] = buffer[ i ];\n\n\t\t\t}\n\n\t\t\tcurrentWeight = weight;\n\n\t\t} else {\n\n\t\t\t// accuN := accuN + incoming * weight\n\n\t\t\tcurrentWeight += weight;\n\t\t\tconst mix = weight / currentWeight;\n\t\t\tthis._mixBufferRegion( buffer, offset, 0, mix, stride );\n\n\t\t}\n\n\t\tthis.cumulativeWeight = currentWeight;\n\n\t}\n\n\t// accumulate data in the 'incoming' region into 'add'\n\taccumulateAdditive( weight ) {\n\n\t\tconst buffer = this.buffer,\n\t\t\tstride = this.valueSize,\n\t\t\toffset = stride * this._addIndex;\n\n\t\tif ( this.cumulativeWeightAdditive === 0 ) {\n\n\t\t\t// add = identity\n\n\t\t\tthis._setIdentity();\n\n\t\t}\n\n\t\t// add := add + incoming * weight\n\n\t\tthis._mixBufferRegionAdditive( buffer, offset, 0, weight, stride );\n\t\tthis.cumulativeWeightAdditive += weight;\n\n\t}\n\n\t// apply the state of 'accu' to the binding when accus differ\n\tapply( accuIndex ) {\n\n\t\tconst stride = this.valueSize,\n\t\t\tbuffer = this.buffer,\n\t\t\toffset = accuIndex * stride + stride,\n\n\t\t\tweight = this.cumulativeWeight,\n\t\t\tweightAdditive = this.cumulativeWeightAdditive,\n\n\t\t\tbinding = this.binding;\n\n\t\tthis.cumulativeWeight = 0;\n\t\tthis.cumulativeWeightAdditive = 0;\n\n\t\tif ( weight < 1 ) {\n\n\t\t\t// accuN := accuN + original * ( 1 - cumulativeWeight )\n\n\t\t\tconst originalValueOffset = stride * this._origIndex;\n\n\t\t\tthis._mixBufferRegion(\n\t\t\t\tbuffer, offset, originalValueOffset, 1 - weight, stride );\n\n\t\t}\n\n\t\tif ( weightAdditive > 0 ) {\n\n\t\t\t// accuN := accuN + additive accuN\n\n\t\t\tthis._mixBufferRegionAdditive( buffer, offset, this._addIndex * stride, 1, stride );\n\n\t\t}\n\n\t\tfor ( let i = stride, e = stride + stride; i !== e; ++ i ) {\n\n\t\t\tif ( buffer[ i ] !== buffer[ i + stride ] ) {\n\n\t\t\t\t// value has changed -> update scene graph\n\n\t\t\t\tbinding.setValue( buffer, offset );\n\t\t\t\tbreak;\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\t// remember the state of the bound property and copy it to both accus\n\tsaveOriginalState() {\n\n\t\tconst binding = this.binding;\n\n\t\tconst buffer = this.buffer,\n\t\t\tstride = this.valueSize,\n\n\t\t\toriginalValueOffset = stride * this._origIndex;\n\n\t\tbinding.getValue( buffer, originalValueOffset );\n\n\t\t// accu[0..1] := orig -- initially detect changes against the original\n\t\tfor ( let i = stride, e = originalValueOffset; i !== e; ++ i ) {\n\n\t\t\tbuffer[ i ] = buffer[ originalValueOffset + ( i % stride ) ];\n\n\t\t}\n\n\t\t// Add to identity for additive\n\t\tthis._setIdentity();\n\n\t\tthis.cumulativeWeight = 0;\n\t\tthis.cumulativeWeightAdditive = 0;\n\n\t}\n\n\t// apply the state previously taken via 'saveOriginalState' to the binding\n\trestoreOriginalState() {\n\n\t\tconst originalValueOffset = this.valueSize * 3;\n\t\tthis.binding.setValue( this.buffer, originalValueOffset );\n\n\t}\n\n\t_setAdditiveIdentityNumeric() {\n\n\t\tconst startIndex = this._addIndex * this.valueSize;\n\t\tconst endIndex = startIndex + this.valueSize;\n\n\t\tfor ( let i = startIndex; i < endIndex; i ++ ) {\n\n\t\t\tthis.buffer[ i ] = 0;\n\n\t\t}\n\n\t}\n\n\t_setAdditiveIdentityQuaternion() {\n\n\t\tthis._setAdditiveIdentityNumeric();\n\t\tthis.buffer[ this._addIndex * this.valueSize + 3 ] = 1;\n\n\t}\n\n\t_setAdditiveIdentityOther() {\n\n\t\tconst startIndex = this._origIndex * this.valueSize;\n\t\tconst targetIndex = this._addIndex * this.valueSize;\n\n\t\tfor ( let i = 0; i < this.valueSize; i ++ ) {\n\n\t\t\tthis.buffer[ targetIndex + i ] = this.buffer[ startIndex + i ];\n\n\t\t}\n\n\t}\n\n\n\t// mix functions\n\n\t_select( buffer, dstOffset, srcOffset, t, stride ) {\n\n\t\tif ( t >= 0.5 ) {\n\n\t\t\tfor ( let i = 0; i !== stride; ++ i ) {\n\n\t\t\t\tbuffer[ dstOffset + i ] = buffer[ srcOffset + i ];\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\t_slerp( buffer, dstOffset, srcOffset, t ) {\n\n\t\tQuaternion.slerpFlat( buffer, dstOffset, buffer, dstOffset, buffer, srcOffset, t );\n\n\t}\n\n\t_slerpAdditive( buffer, dstOffset, srcOffset, t, stride ) {\n\n\t\tconst workOffset = this._workIndex * stride;\n\n\t\t// Store result in intermediate buffer offset\n\t\tQuaternion.multiplyQuaternionsFlat( buffer, workOffset, buffer, dstOffset, buffer, srcOffset );\n\n\t\t// Slerp to the intermediate result\n\t\tQuaternion.slerpFlat( buffer, dstOffset, buffer, dstOffset, buffer, workOffset, t );\n\n\t}\n\n\t_lerp( buffer, dstOffset, srcOffset, t, stride ) {\n\n\t\tconst s = 1 - t;\n\n\t\tfor ( let i = 0; i !== stride; ++ i ) {\n\n\t\t\tconst j = dstOffset + i;\n\n\t\t\tbuffer[ j ] = buffer[ j ] * s + buffer[ srcOffset + i ] * t;\n\n\t\t}\n\n\t}\n\n\t_lerpAdditive( buffer, dstOffset, srcOffset, t, stride ) {\n\n\t\tfor ( let i = 0; i !== stride; ++ i ) {\n\n\t\t\tconst j = dstOffset + i;\n\n\t\t\tbuffer[ j ] = buffer[ j ] + buffer[ srcOffset + i ] * t;\n\n\t\t}\n\n\t}\n\n}\n\n// Characters [].:/ are reserved for track binding syntax.\nconst _RESERVED_CHARS_RE = '\\\\[\\\\]\\\\.:\\\\/';\nconst _reservedRe = new RegExp( '[' + _RESERVED_CHARS_RE + ']', 'g' );\n\n// Attempts to allow node names from any language. ES5's `\\w` regexp matches\n// only latin characters, and the unicode \\p{L} is not yet supported. So\n// instead, we exclude reserved characters and match everything else.\nconst _wordChar = '[^' + _RESERVED_CHARS_RE + ']';\nconst _wordCharOrDot = '[^' + _RESERVED_CHARS_RE.replace( '\\\\.', '' ) + ']';\n\n// Parent directories, delimited by '/' or ':'. Currently unused, but must\n// be matched to parse the rest of the track name.\nconst _directoryRe = /*@__PURE__*/ /((?:WC+[\\/:])*)/.source.replace( 'WC', _wordChar );\n\n// Target node. May contain word characters (a-zA-Z0-9_) and '.' or '-'.\nconst _nodeRe = /*@__PURE__*/ /(WCOD+)?/.source.replace( 'WCOD', _wordCharOrDot );\n\n// Object on target node, and accessor. May not contain reserved\n// characters. Accessor may contain any character except closing bracket.\nconst _objectRe = /*@__PURE__*/ /(?:\\.(WC+)(?:\\[(.+)\\])?)?/.source.replace( 'WC', _wordChar );\n\n// Property and accessor. May not contain reserved characters. Accessor may\n// contain any non-bracket characters.\nconst _propertyRe = /*@__PURE__*/ /\\.(WC+)(?:\\[(.+)\\])?/.source.replace( 'WC', _wordChar );\n\nconst _trackRe = new RegExp( ''\n\t+ '^'\n\t+ _directoryRe\n\t+ _nodeRe\n\t+ _objectRe\n\t+ _propertyRe\n\t+ '$'\n);\n\nconst _supportedObjectNames = [ 'material', 'materials', 'bones', 'map' ];\n\nclass Composite {\n\n\tconstructor( targetGroup, path, optionalParsedPath ) {\n\n\t\tconst parsedPath = optionalParsedPath || PropertyBinding.parseTrackName( path );\n\n\t\tthis._targetGroup = targetGroup;\n\t\tthis._bindings = targetGroup.subscribe_( path, parsedPath );\n\n\t}\n\n\tgetValue( array, offset ) {\n\n\t\tthis.bind(); // bind all binding\n\n\t\tconst firstValidIndex = this._targetGroup.nCachedObjects_,\n\t\t\tbinding = this._bindings[ firstValidIndex ];\n\n\t\t// and only call .getValue on the first\n\t\tif ( binding !== undefined ) binding.getValue( array, offset );\n\n\t}\n\n\tsetValue( array, offset ) {\n\n\t\tconst bindings = this._bindings;\n\n\t\tfor ( let i = this._targetGroup.nCachedObjects_, n = bindings.length; i !== n; ++ i ) {\n\n\t\t\tbindings[ i ].setValue( array, offset );\n\n\t\t}\n\n\t}\n\n\tbind() {\n\n\t\tconst bindings = this._bindings;\n\n\t\tfor ( let i = this._targetGroup.nCachedObjects_, n = bindings.length; i !== n; ++ i ) {\n\n\t\t\tbindings[ i ].bind();\n\n\t\t}\n\n\t}\n\n\tunbind() {\n\n\t\tconst bindings = this._bindings;\n\n\t\tfor ( let i = this._targetGroup.nCachedObjects_, n = bindings.length; i !== n; ++ i ) {\n\n\t\t\tbindings[ i ].unbind();\n\n\t\t}\n\n\t}\n\n}\n\n// Note: This class uses a State pattern on a per-method basis:\n// 'bind' sets 'this.getValue' / 'setValue' and shadows the\n// prototype version of these methods with one that represents\n// the bound state. When the property is not found, the methods\n// become no-ops.\nclass PropertyBinding {\n\n\tconstructor( rootNode, path, parsedPath ) {\n\n\t\tthis.path = path;\n\t\tthis.parsedPath = parsedPath || PropertyBinding.parseTrackName( path );\n\n\t\tthis.node = PropertyBinding.findNode( rootNode, this.parsedPath.nodeName );\n\n\t\tthis.rootNode = rootNode;\n\n\t\t// initial state of these methods that calls 'bind'\n\t\tthis.getValue = this._getValue_unbound;\n\t\tthis.setValue = this._setValue_unbound;\n\n\t}\n\n\n\tstatic create( root, path, parsedPath ) {\n\n\t\tif ( ! ( root && root.isAnimationObjectGroup ) ) {\n\n\t\t\treturn new PropertyBinding( root, path, parsedPath );\n\n\t\t} else {\n\n\t\t\treturn new PropertyBinding.Composite( root, path, parsedPath );\n\n\t\t}\n\n\t}\n\n\t/**\n\t * Replaces spaces with underscores and removes unsupported characters from\n\t * node names, to ensure compatibility with parseTrackName().\n\t *\n\t * @param {string} name Node name to be sanitized.\n\t * @return {string}\n\t */\n\tstatic sanitizeNodeName( name ) {\n\n\t\treturn name.replace( /\\s/g, '_' ).replace( _reservedRe, '' );\n\n\t}\n\n\tstatic parseTrackName( trackName ) {\n\n\t\tconst matches = _trackRe.exec( trackName );\n\n\t\tif ( matches === null ) {\n\n\t\t\tthrow new Error( 'PropertyBinding: Cannot parse trackName: ' + trackName );\n\n\t\t}\n\n\t\tconst results = {\n\t\t\t// directoryName: matches[ 1 ], // (tschw) currently unused\n\t\t\tnodeName: matches[ 2 ],\n\t\t\tobjectName: matches[ 3 ],\n\t\t\tobjectIndex: matches[ 4 ],\n\t\t\tpropertyName: matches[ 5 ], // required\n\t\t\tpropertyIndex: matches[ 6 ]\n\t\t};\n\n\t\tconst lastDot = results.nodeName && results.nodeName.lastIndexOf( '.' );\n\n\t\tif ( lastDot !== undefined && lastDot !== - 1 ) {\n\n\t\t\tconst objectName = results.nodeName.substring( lastDot + 1 );\n\n\t\t\t// Object names must be checked against an allowlist. Otherwise, there\n\t\t\t// is no way to parse 'foo.bar.baz': 'baz' must be a property, but\n\t\t\t// 'bar' could be the objectName, or part of a nodeName (which can\n\t\t\t// include '.' characters).\n\t\t\tif ( _supportedObjectNames.indexOf( objectName ) !== - 1 ) {\n\n\t\t\t\tresults.nodeName = results.nodeName.substring( 0, lastDot );\n\t\t\t\tresults.objectName = objectName;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( results.propertyName === null || results.propertyName.length === 0 ) {\n\n\t\t\tthrow new Error( 'PropertyBinding: can not parse propertyName from trackName: ' + trackName );\n\n\t\t}\n\n\t\treturn results;\n\n\t}\n\n\tstatic findNode( root, nodeName ) {\n\n\t\tif ( nodeName === undefined || nodeName === '' || nodeName === '.' || nodeName === - 1 || nodeName === root.name || nodeName === root.uuid ) {\n\n\t\t\treturn root;\n\n\t\t}\n\n\t\t// search into skeleton bones.\n\t\tif ( root.skeleton ) {\n\n\t\t\tconst bone = root.skeleton.getBoneByName( nodeName );\n\n\t\t\tif ( bone !== undefined ) {\n\n\t\t\t\treturn bone;\n\n\t\t\t}\n\n\t\t}\n\n\t\t// search into node subtree.\n\t\tif ( root.children ) {\n\n\t\t\tconst searchNodeSubtree = function ( children ) {\n\n\t\t\t\tfor ( let i = 0; i < children.length; i ++ ) {\n\n\t\t\t\t\tconst childNode = children[ i ];\n\n\t\t\t\t\tif ( childNode.name === nodeName || childNode.uuid === nodeName ) {\n\n\t\t\t\t\t\treturn childNode;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tconst result = searchNodeSubtree( childNode.children );\n\n\t\t\t\t\tif ( result ) return result;\n\n\t\t\t\t}\n\n\t\t\t\treturn null;\n\n\t\t\t};\n\n\t\t\tconst subTreeNode = searchNodeSubtree( root.children );\n\n\t\t\tif ( subTreeNode ) {\n\n\t\t\t\treturn subTreeNode;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn null;\n\n\t}\n\n\t// these are used to \"bind\" a nonexistent property\n\t_getValue_unavailable() {}\n\t_setValue_unavailable() {}\n\n\t// Getters\n\n\t_getValue_direct( buffer, offset ) {\n\n\t\tbuffer[ offset ] = this.targetObject[ this.propertyName ];\n\n\t}\n\n\t_getValue_array( buffer, offset ) {\n\n\t\tconst source = this.resolvedProperty;\n\n\t\tfor ( let i = 0, n = source.length; i !== n; ++ i ) {\n\n\t\t\tbuffer[ offset ++ ] = source[ i ];\n\n\t\t}\n\n\t}\n\n\t_getValue_arrayElement( buffer, offset ) {\n\n\t\tbuffer[ offset ] = this.resolvedProperty[ this.propertyIndex ];\n\n\t}\n\n\t_getValue_toArray( buffer, offset ) {\n\n\t\tthis.resolvedProperty.toArray( buffer, offset );\n\n\t}\n\n\t// Direct\n\n\t_setValue_direct( buffer, offset ) {\n\n\t\tthis.targetObject[ this.propertyName ] = buffer[ offset ];\n\n\t}\n\n\t_setValue_direct_setNeedsUpdate( buffer, offset ) {\n\n\t\tthis.targetObject[ this.propertyName ] = buffer[ offset ];\n\t\tthis.targetObject.needsUpdate = true;\n\n\t}\n\n\t_setValue_direct_setMatrixWorldNeedsUpdate( buffer, offset ) {\n\n\t\tthis.targetObject[ this.propertyName ] = buffer[ offset ];\n\t\tthis.targetObject.matrixWorldNeedsUpdate = true;\n\n\t}\n\n\t// EntireArray\n\n\t_setValue_array( buffer, offset ) {\n\n\t\tconst dest = this.resolvedProperty;\n\n\t\tfor ( let i = 0, n = dest.length; i !== n; ++ i ) {\n\n\t\t\tdest[ i ] = buffer[ offset ++ ];\n\n\t\t}\n\n\t}\n\n\t_setValue_array_setNeedsUpdate( buffer, offset ) {\n\n\t\tconst dest = this.resolvedProperty;\n\n\t\tfor ( let i = 0, n = dest.length; i !== n; ++ i ) {\n\n\t\t\tdest[ i ] = buffer[ offset ++ ];\n\n\t\t}\n\n\t\tthis.targetObject.needsUpdate = true;\n\n\t}\n\n\t_setValue_array_setMatrixWorldNeedsUpdate( buffer, offset ) {\n\n\t\tconst dest = this.resolvedProperty;\n\n\t\tfor ( let i = 0, n = dest.length; i !== n; ++ i ) {\n\n\t\t\tdest[ i ] = buffer[ offset ++ ];\n\n\t\t}\n\n\t\tthis.targetObject.matrixWorldNeedsUpdate = true;\n\n\t}\n\n\t// ArrayElement\n\n\t_setValue_arrayElement( buffer, offset ) {\n\n\t\tthis.resolvedProperty[ this.propertyIndex ] = buffer[ offset ];\n\n\t}\n\n\t_setValue_arrayElement_setNeedsUpdate( buffer, offset ) {\n\n\t\tthis.resolvedProperty[ this.propertyIndex ] = buffer[ offset ];\n\t\tthis.targetObject.needsUpdate = true;\n\n\t}\n\n\t_setValue_arrayElement_setMatrixWorldNeedsUpdate( buffer, offset ) {\n\n\t\tthis.resolvedProperty[ this.propertyIndex ] = buffer[ offset ];\n\t\tthis.targetObject.matrixWorldNeedsUpdate = true;\n\n\t}\n\n\t// HasToFromArray\n\n\t_setValue_fromArray( buffer, offset ) {\n\n\t\tthis.resolvedProperty.fromArray( buffer, offset );\n\n\t}\n\n\t_setValue_fromArray_setNeedsUpdate( buffer, offset ) {\n\n\t\tthis.resolvedProperty.fromArray( buffer, offset );\n\t\tthis.targetObject.needsUpdate = true;\n\n\t}\n\n\t_setValue_fromArray_setMatrixWorldNeedsUpdate( buffer, offset ) {\n\n\t\tthis.resolvedProperty.fromArray( buffer, offset );\n\t\tthis.targetObject.matrixWorldNeedsUpdate = true;\n\n\t}\n\n\t_getValue_unbound( targetArray, offset ) {\n\n\t\tthis.bind();\n\t\tthis.getValue( targetArray, offset );\n\n\t}\n\n\t_setValue_unbound( sourceArray, offset ) {\n\n\t\tthis.bind();\n\t\tthis.setValue( sourceArray, offset );\n\n\t}\n\n\t// create getter / setter pair for a property in the scene graph\n\tbind() {\n\n\t\tlet targetObject = this.node;\n\t\tconst parsedPath = this.parsedPath;\n\n\t\tconst objectName = parsedPath.objectName;\n\t\tconst propertyName = parsedPath.propertyName;\n\t\tlet propertyIndex = parsedPath.propertyIndex;\n\n\t\tif ( ! targetObject ) {\n\n\t\t\ttargetObject = PropertyBinding.findNode( this.rootNode, parsedPath.nodeName );\n\n\t\t\tthis.node = targetObject;\n\n\t\t}\n\n\t\t// set fail state so we can just 'return' on error\n\t\tthis.getValue = this._getValue_unavailable;\n\t\tthis.setValue = this._setValue_unavailable;\n\n\t\t// ensure there is a value node\n\t\tif ( ! targetObject ) {\n\n\t\t\tconsole.warn( 'THREE.PropertyBinding: No target node found for track: ' + this.path + '.' );\n\t\t\treturn;\n\n\t\t}\n\n\t\tif ( objectName ) {\n\n\t\t\tlet objectIndex = parsedPath.objectIndex;\n\n\t\t\t// special cases were we need to reach deeper into the hierarchy to get the face materials....\n\t\t\tswitch ( objectName ) {\n\n\t\t\t\tcase 'materials':\n\n\t\t\t\t\tif ( ! targetObject.material ) {\n\n\t\t\t\t\t\tconsole.error( 'THREE.PropertyBinding: Can not bind to material as node does not have a material.', this );\n\t\t\t\t\t\treturn;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( ! targetObject.material.materials ) {\n\n\t\t\t\t\t\tconsole.error( 'THREE.PropertyBinding: Can not bind to material.materials as node.material does not have a materials array.', this );\n\t\t\t\t\t\treturn;\n\n\t\t\t\t\t}\n\n\t\t\t\t\ttargetObject = targetObject.material.materials;\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 'bones':\n\n\t\t\t\t\tif ( ! targetObject.skeleton ) {\n\n\t\t\t\t\t\tconsole.error( 'THREE.PropertyBinding: Can not bind to bones as node does not have a skeleton.', this );\n\t\t\t\t\t\treturn;\n\n\t\t\t\t\t}\n\n\t\t\t\t\t// potential future optimization: skip this if propertyIndex is already an integer\n\t\t\t\t\t// and convert the integer string to a true integer.\n\n\t\t\t\t\ttargetObject = targetObject.skeleton.bones;\n\n\t\t\t\t\t// support resolving morphTarget names into indices.\n\t\t\t\t\tfor ( let i = 0; i < targetObject.length; i ++ ) {\n\n\t\t\t\t\t\tif ( targetObject[ i ].name === objectIndex ) {\n\n\t\t\t\t\t\t\tobjectIndex = i;\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 'map':\n\n\t\t\t\t\tif ( 'map' in targetObject ) {\n\n\t\t\t\t\t\ttargetObject = targetObject.map;\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( ! targetObject.material ) {\n\n\t\t\t\t\t\tconsole.error( 'THREE.PropertyBinding: Can not bind to material as node does not have a material.', this );\n\t\t\t\t\t\treturn;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( ! targetObject.material.map ) {\n\n\t\t\t\t\t\tconsole.error( 'THREE.PropertyBinding: Can not bind to material.map as node.material does not have a map.', this );\n\t\t\t\t\t\treturn;\n\n\t\t\t\t\t}\n\n\t\t\t\t\ttargetObject = targetObject.material.map;\n\t\t\t\t\tbreak;\n\n\t\t\t\tdefault:\n\n\t\t\t\t\tif ( targetObject[ objectName ] === undefined ) {\n\n\t\t\t\t\t\tconsole.error( 'THREE.PropertyBinding: Can not bind to objectName of node undefined.', this );\n\t\t\t\t\t\treturn;\n\n\t\t\t\t\t}\n\n\t\t\t\t\ttargetObject = targetObject[ objectName ];\n\n\t\t\t}\n\n\n\t\t\tif ( objectIndex !== undefined ) {\n\n\t\t\t\tif ( targetObject[ objectIndex ] === undefined ) {\n\n\t\t\t\t\tconsole.error( 'THREE.PropertyBinding: Trying to bind to objectIndex of objectName, but is undefined.', this, targetObject );\n\t\t\t\t\treturn;\n\n\t\t\t\t}\n\n\t\t\t\ttargetObject = targetObject[ objectIndex ];\n\n\t\t\t}\n\n\t\t}\n\n\t\t// resolve property\n\t\tconst nodeProperty = targetObject[ propertyName ];\n\n\t\tif ( nodeProperty === undefined ) {\n\n\t\t\tconst nodeName = parsedPath.nodeName;\n\n\t\t\tconsole.error( 'THREE.PropertyBinding: Trying to update property for track: ' + nodeName +\n\t\t\t\t'.' + propertyName + ' but it wasn\\'t found.', targetObject );\n\t\t\treturn;\n\n\t\t}\n\n\t\t// determine versioning scheme\n\t\tlet versioning = this.Versioning.None;\n\n\t\tthis.targetObject = targetObject;\n\n\t\tif ( targetObject.needsUpdate !== undefined ) { // material\n\n\t\t\tversioning = this.Versioning.NeedsUpdate;\n\n\t\t} else if ( targetObject.matrixWorldNeedsUpdate !== undefined ) { // node transform\n\n\t\t\tversioning = this.Versioning.MatrixWorldNeedsUpdate;\n\n\t\t}\n\n\t\t// determine how the property gets bound\n\t\tlet bindingType = this.BindingType.Direct;\n\n\t\tif ( propertyIndex !== undefined ) {\n\n\t\t\t// access a sub element of the property array (only primitives are supported right now)\n\n\t\t\tif ( propertyName === 'morphTargetInfluences' ) {\n\n\t\t\t\t// potential optimization, skip this if propertyIndex is already an integer, and convert the integer string to a true integer.\n\n\t\t\t\t// support resolving morphTarget names into indices.\n\t\t\t\tif ( ! targetObject.geometry ) {\n\n\t\t\t\t\tconsole.error( 'THREE.PropertyBinding: Can not bind to morphTargetInfluences because node does not have a geometry.', this );\n\t\t\t\t\treturn;\n\n\t\t\t\t}\n\n\t\t\t\tif ( ! targetObject.geometry.morphAttributes ) {\n\n\t\t\t\t\tconsole.error( 'THREE.PropertyBinding: Can not bind to morphTargetInfluences because node does not have a geometry.morphAttributes.', this );\n\t\t\t\t\treturn;\n\n\t\t\t\t}\n\n\t\t\t\tif ( targetObject.morphTargetDictionary[ propertyIndex ] !== undefined ) {\n\n\t\t\t\t\tpropertyIndex = targetObject.morphTargetDictionary[ propertyIndex ];\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tbindingType = this.BindingType.ArrayElement;\n\n\t\t\tthis.resolvedProperty = nodeProperty;\n\t\t\tthis.propertyIndex = propertyIndex;\n\n\t\t} else if ( nodeProperty.fromArray !== undefined && nodeProperty.toArray !== undefined ) {\n\n\t\t\t// must use copy for Object3D.Euler/Quaternion\n\n\t\t\tbindingType = this.BindingType.HasFromToArray;\n\n\t\t\tthis.resolvedProperty = nodeProperty;\n\n\t\t} else if ( Array.isArray( nodeProperty ) ) {\n\n\t\t\tbindingType = this.BindingType.EntireArray;\n\n\t\t\tthis.resolvedProperty = nodeProperty;\n\n\t\t} else {\n\n\t\t\tthis.propertyName = propertyName;\n\n\t\t}\n\n\t\t// select getter / setter\n\t\tthis.getValue = this.GetterByBindingType[ bindingType ];\n\t\tthis.setValue = this.SetterByBindingTypeAndVersioning[ bindingType ][ versioning ];\n\n\t}\n\n\tunbind() {\n\n\t\tthis.node = null;\n\n\t\t// back to the prototype version of getValue / setValue\n\t\t// note: avoiding to mutate the shape of 'this' via 'delete'\n\t\tthis.getValue = this._getValue_unbound;\n\t\tthis.setValue = this._setValue_unbound;\n\n\t}\n\n}\n\nPropertyBinding.Composite = Composite;\n\nPropertyBinding.prototype.BindingType = {\n\tDirect: 0,\n\tEntireArray: 1,\n\tArrayElement: 2,\n\tHasFromToArray: 3\n};\n\nPropertyBinding.prototype.Versioning = {\n\tNone: 0,\n\tNeedsUpdate: 1,\n\tMatrixWorldNeedsUpdate: 2\n};\n\nPropertyBinding.prototype.GetterByBindingType = [\n\n\tPropertyBinding.prototype._getValue_direct,\n\tPropertyBinding.prototype._getValue_array,\n\tPropertyBinding.prototype._getValue_arrayElement,\n\tPropertyBinding.prototype._getValue_toArray,\n\n];\n\nPropertyBinding.prototype.SetterByBindingTypeAndVersioning = [\n\n\t[\n\t\t// Direct\n\t\tPropertyBinding.prototype._setValue_direct,\n\t\tPropertyBinding.prototype._setValue_direct_setNeedsUpdate,\n\t\tPropertyBinding.prototype._setValue_direct_setMatrixWorldNeedsUpdate,\n\n\t], [\n\n\t\t// EntireArray\n\n\t\tPropertyBinding.prototype._setValue_array,\n\t\tPropertyBinding.prototype._setValue_array_setNeedsUpdate,\n\t\tPropertyBinding.prototype._setValue_array_setMatrixWorldNeedsUpdate,\n\n\t], [\n\n\t\t// ArrayElement\n\t\tPropertyBinding.prototype._setValue_arrayElement,\n\t\tPropertyBinding.prototype._setValue_arrayElement_setNeedsUpdate,\n\t\tPropertyBinding.prototype._setValue_arrayElement_setMatrixWorldNeedsUpdate,\n\n\t], [\n\n\t\t// HasToFromArray\n\t\tPropertyBinding.prototype._setValue_fromArray,\n\t\tPropertyBinding.prototype._setValue_fromArray_setNeedsUpdate,\n\t\tPropertyBinding.prototype._setValue_fromArray_setMatrixWorldNeedsUpdate,\n\n\t]\n\n];\n\n/**\n *\n * A group of objects that receives a shared animation state.\n *\n * Usage:\n *\n * - Add objects you would otherwise pass as 'root' to the\n * constructor or the .clipAction method of AnimationMixer.\n *\n * - Instead pass this object as 'root'.\n *\n * - You can also add and remove objects later when the mixer\n * is running.\n *\n * Note:\n *\n * Objects of this class appear as one object to the mixer,\n * so cache control of the individual objects must be done\n * on the group.\n *\n * Limitation:\n *\n * - The animated properties must be compatible among the\n * all objects in the group.\n *\n * - A single property can either be controlled through a\n * target group or directly, but not both.\n */\n\nclass AnimationObjectGroup {\n\n\tconstructor() {\n\n\t\tthis.isAnimationObjectGroup = true;\n\n\t\tthis.uuid = generateUUID();\n\n\t\t// cached objects followed by the active ones\n\t\tthis._objects = Array.prototype.slice.call( arguments );\n\n\t\tthis.nCachedObjects_ = 0; // threshold\n\t\t// note: read by PropertyBinding.Composite\n\n\t\tconst indices = {};\n\t\tthis._indicesByUUID = indices; // for bookkeeping\n\n\t\tfor ( let i = 0, n = arguments.length; i !== n; ++ i ) {\n\n\t\t\tindices[ arguments[ i ].uuid ] = i;\n\n\t\t}\n\n\t\tthis._paths = []; // inside: string\n\t\tthis._parsedPaths = []; // inside: { we don't care, here }\n\t\tthis._bindings = []; // inside: Array< PropertyBinding >\n\t\tthis._bindingsIndicesByPath = {}; // inside: indices in these arrays\n\n\t\tconst scope = this;\n\n\t\tthis.stats = {\n\n\t\t\tobjects: {\n\t\t\t\tget total() {\n\n\t\t\t\t\treturn scope._objects.length;\n\n\t\t\t\t},\n\t\t\t\tget inUse() {\n\n\t\t\t\t\treturn this.total - scope.nCachedObjects_;\n\n\t\t\t\t}\n\t\t\t},\n\t\t\tget bindingsPerObject() {\n\n\t\t\t\treturn scope._bindings.length;\n\n\t\t\t}\n\n\t\t};\n\n\t}\n\n\tadd() {\n\n\t\tconst objects = this._objects,\n\t\t\tindicesByUUID = this._indicesByUUID,\n\t\t\tpaths = this._paths,\n\t\t\tparsedPaths = this._parsedPaths,\n\t\t\tbindings = this._bindings,\n\t\t\tnBindings = bindings.length;\n\n\t\tlet knownObject = undefined,\n\t\t\tnObjects = objects.length,\n\t\t\tnCachedObjects = this.nCachedObjects_;\n\n\t\tfor ( let i = 0, n = arguments.length; i !== n; ++ i ) {\n\n\t\t\tconst object = arguments[ i ],\n\t\t\t\tuuid = object.uuid;\n\t\t\tlet index = indicesByUUID[ uuid ];\n\n\t\t\tif ( index === undefined ) {\n\n\t\t\t\t// unknown object -> add it to the ACTIVE region\n\n\t\t\t\tindex = nObjects ++;\n\t\t\t\tindicesByUUID[ uuid ] = index;\n\t\t\t\tobjects.push( object );\n\n\t\t\t\t// accounting is done, now do the same for all bindings\n\n\t\t\t\tfor ( let j = 0, m = nBindings; j !== m; ++ j ) {\n\n\t\t\t\t\tbindings[ j ].push( new PropertyBinding( object, paths[ j ], parsedPaths[ j ] ) );\n\n\t\t\t\t}\n\n\t\t\t} else if ( index < nCachedObjects ) {\n\n\t\t\t\tknownObject = objects[ index ];\n\n\t\t\t\t// move existing object to the ACTIVE region\n\n\t\t\t\tconst firstActiveIndex = -- nCachedObjects,\n\t\t\t\t\tlastCachedObject = objects[ firstActiveIndex ];\n\n\t\t\t\tindicesByUUID[ lastCachedObject.uuid ] = index;\n\t\t\t\tobjects[ index ] = lastCachedObject;\n\n\t\t\t\tindicesByUUID[ uuid ] = firstActiveIndex;\n\t\t\t\tobjects[ firstActiveIndex ] = object;\n\n\t\t\t\t// accounting is done, now do the same for all bindings\n\n\t\t\t\tfor ( let j = 0, m = nBindings; j !== m; ++ j ) {\n\n\t\t\t\t\tconst bindingsForPath = bindings[ j ],\n\t\t\t\t\t\tlastCached = bindingsForPath[ firstActiveIndex ];\n\n\t\t\t\t\tlet binding = bindingsForPath[ index ];\n\n\t\t\t\t\tbindingsForPath[ index ] = lastCached;\n\n\t\t\t\t\tif ( binding === undefined ) {\n\n\t\t\t\t\t\t// since we do not bother to create new bindings\n\t\t\t\t\t\t// for objects that are cached, the binding may\n\t\t\t\t\t\t// or may not exist\n\n\t\t\t\t\t\tbinding = new PropertyBinding( object, paths[ j ], parsedPaths[ j ] );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tbindingsForPath[ firstActiveIndex ] = binding;\n\n\t\t\t\t}\n\n\t\t\t} else if ( objects[ index ] !== knownObject ) {\n\n\t\t\t\tconsole.error( 'THREE.AnimationObjectGroup: Different objects with the same UUID ' +\n\t\t\t\t\t'detected. Clean the caches or recreate your infrastructure when reloading scenes.' );\n\n\t\t\t} // else the object is already where we want it to be\n\n\t\t} // for arguments\n\n\t\tthis.nCachedObjects_ = nCachedObjects;\n\n\t}\n\n\tremove() {\n\n\t\tconst objects = this._objects,\n\t\t\tindicesByUUID = this._indicesByUUID,\n\t\t\tbindings = this._bindings,\n\t\t\tnBindings = bindings.length;\n\n\t\tlet nCachedObjects = this.nCachedObjects_;\n\n\t\tfor ( let i = 0, n = arguments.length; i !== n; ++ i ) {\n\n\t\t\tconst object = arguments[ i ],\n\t\t\t\tuuid = object.uuid,\n\t\t\t\tindex = indicesByUUID[ uuid ];\n\n\t\t\tif ( index !== undefined && index >= nCachedObjects ) {\n\n\t\t\t\t// move existing object into the CACHED region\n\n\t\t\t\tconst lastCachedIndex = nCachedObjects ++,\n\t\t\t\t\tfirstActiveObject = objects[ lastCachedIndex ];\n\n\t\t\t\tindicesByUUID[ firstActiveObject.uuid ] = index;\n\t\t\t\tobjects[ index ] = firstActiveObject;\n\n\t\t\t\tindicesByUUID[ uuid ] = lastCachedIndex;\n\t\t\t\tobjects[ lastCachedIndex ] = object;\n\n\t\t\t\t// accounting is done, now do the same for all bindings\n\n\t\t\t\tfor ( let j = 0, m = nBindings; j !== m; ++ j ) {\n\n\t\t\t\t\tconst bindingsForPath = bindings[ j ],\n\t\t\t\t\t\tfirstActive = bindingsForPath[ lastCachedIndex ],\n\t\t\t\t\t\tbinding = bindingsForPath[ index ];\n\n\t\t\t\t\tbindingsForPath[ index ] = firstActive;\n\t\t\t\t\tbindingsForPath[ lastCachedIndex ] = binding;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} // for arguments\n\n\t\tthis.nCachedObjects_ = nCachedObjects;\n\n\t}\n\n\t// remove & forget\n\tuncache() {\n\n\t\tconst objects = this._objects,\n\t\t\tindicesByUUID = this._indicesByUUID,\n\t\t\tbindings = this._bindings,\n\t\t\tnBindings = bindings.length;\n\n\t\tlet nCachedObjects = this.nCachedObjects_,\n\t\t\tnObjects = objects.length;\n\n\t\tfor ( let i = 0, n = arguments.length; i !== n; ++ i ) {\n\n\t\t\tconst object = arguments[ i ],\n\t\t\t\tuuid = object.uuid,\n\t\t\t\tindex = indicesByUUID[ uuid ];\n\n\t\t\tif ( index !== undefined ) {\n\n\t\t\t\tdelete indicesByUUID[ uuid ];\n\n\t\t\t\tif ( index < nCachedObjects ) {\n\n\t\t\t\t\t// object is cached, shrink the CACHED region\n\n\t\t\t\t\tconst firstActiveIndex = -- nCachedObjects,\n\t\t\t\t\t\tlastCachedObject = objects[ firstActiveIndex ],\n\t\t\t\t\t\tlastIndex = -- nObjects,\n\t\t\t\t\t\tlastObject = objects[ lastIndex ];\n\n\t\t\t\t\t// last cached object takes this object's place\n\t\t\t\t\tindicesByUUID[ lastCachedObject.uuid ] = index;\n\t\t\t\t\tobjects[ index ] = lastCachedObject;\n\n\t\t\t\t\t// last object goes to the activated slot and pop\n\t\t\t\t\tindicesByUUID[ lastObject.uuid ] = firstActiveIndex;\n\t\t\t\t\tobjects[ firstActiveIndex ] = lastObject;\n\t\t\t\t\tobjects.pop();\n\n\t\t\t\t\t// accounting is done, now do the same for all bindings\n\n\t\t\t\t\tfor ( let j = 0, m = nBindings; j !== m; ++ j ) {\n\n\t\t\t\t\t\tconst bindingsForPath = bindings[ j ],\n\t\t\t\t\t\t\tlastCached = bindingsForPath[ firstActiveIndex ],\n\t\t\t\t\t\t\tlast = bindingsForPath[ lastIndex ];\n\n\t\t\t\t\t\tbindingsForPath[ index ] = lastCached;\n\t\t\t\t\t\tbindingsForPath[ firstActiveIndex ] = last;\n\t\t\t\t\t\tbindingsForPath.pop();\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// object is active, just swap with the last and pop\n\n\t\t\t\t\tconst lastIndex = -- nObjects,\n\t\t\t\t\t\tlastObject = objects[ lastIndex ];\n\n\t\t\t\t\tif ( lastIndex > 0 ) {\n\n\t\t\t\t\t\tindicesByUUID[ lastObject.uuid ] = index;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tobjects[ index ] = lastObject;\n\t\t\t\t\tobjects.pop();\n\n\t\t\t\t\t// accounting is done, now do the same for all bindings\n\n\t\t\t\t\tfor ( let j = 0, m = nBindings; j !== m; ++ j ) {\n\n\t\t\t\t\t\tconst bindingsForPath = bindings[ j ];\n\n\t\t\t\t\t\tbindingsForPath[ index ] = bindingsForPath[ lastIndex ];\n\t\t\t\t\t\tbindingsForPath.pop();\n\n\t\t\t\t\t}\n\n\t\t\t\t} // cached or active\n\n\t\t\t} // if object is known\n\n\t\t} // for arguments\n\n\t\tthis.nCachedObjects_ = nCachedObjects;\n\n\t}\n\n\t// Internal interface used by befriended PropertyBinding.Composite:\n\n\tsubscribe_( path, parsedPath ) {\n\n\t\t// returns an array of bindings for the given path that is changed\n\t\t// according to the contained objects in the group\n\n\t\tconst indicesByPath = this._bindingsIndicesByPath;\n\t\tlet index = indicesByPath[ path ];\n\t\tconst bindings = this._bindings;\n\n\t\tif ( index !== undefined ) return bindings[ index ];\n\n\t\tconst paths = this._paths,\n\t\t\tparsedPaths = this._parsedPaths,\n\t\t\tobjects = this._objects,\n\t\t\tnObjects = objects.length,\n\t\t\tnCachedObjects = this.nCachedObjects_,\n\t\t\tbindingsForPath = new Array( nObjects );\n\n\t\tindex = bindings.length;\n\n\t\tindicesByPath[ path ] = index;\n\n\t\tpaths.push( path );\n\t\tparsedPaths.push( parsedPath );\n\t\tbindings.push( bindingsForPath );\n\n\t\tfor ( let i = nCachedObjects, n = objects.length; i !== n; ++ i ) {\n\n\t\t\tconst object = objects[ i ];\n\t\t\tbindingsForPath[ i ] = new PropertyBinding( object, path, parsedPath );\n\n\t\t}\n\n\t\treturn bindingsForPath;\n\n\t}\n\n\tunsubscribe_( path ) {\n\n\t\t// tells the group to forget about a property path and no longer\n\t\t// update the array previously obtained with 'subscribe_'\n\n\t\tconst indicesByPath = this._bindingsIndicesByPath,\n\t\t\tindex = indicesByPath[ path ];\n\n\t\tif ( index !== undefined ) {\n\n\t\t\tconst paths = this._paths,\n\t\t\t\tparsedPaths = this._parsedPaths,\n\t\t\t\tbindings = this._bindings,\n\t\t\t\tlastBindingsIndex = bindings.length - 1,\n\t\t\t\tlastBindings = bindings[ lastBindingsIndex ],\n\t\t\t\tlastBindingsPath = path[ lastBindingsIndex ];\n\n\t\t\tindicesByPath[ lastBindingsPath ] = index;\n\n\t\t\tbindings[ index ] = lastBindings;\n\t\t\tbindings.pop();\n\n\t\t\tparsedPaths[ index ] = parsedPaths[ lastBindingsIndex ];\n\t\t\tparsedPaths.pop();\n\n\t\t\tpaths[ index ] = paths[ lastBindingsIndex ];\n\t\t\tpaths.pop();\n\n\t\t}\n\n\t}\n\n}\n\nclass AnimationAction {\n\n\tconstructor( mixer, clip, localRoot = null, blendMode = clip.blendMode ) {\n\n\t\tthis._mixer = mixer;\n\t\tthis._clip = clip;\n\t\tthis._localRoot = localRoot;\n\t\tthis.blendMode = blendMode;\n\n\t\tconst tracks = clip.tracks,\n\t\t\tnTracks = tracks.length,\n\t\t\tinterpolants = new Array( nTracks );\n\n\t\tconst interpolantSettings = {\n\t\t\tendingStart: ZeroCurvatureEnding,\n\t\t\tendingEnd: ZeroCurvatureEnding\n\t\t};\n\n\t\tfor ( let i = 0; i !== nTracks; ++ i ) {\n\n\t\t\tconst interpolant = tracks[ i ].createInterpolant( null );\n\t\t\tinterpolants[ i ] = interpolant;\n\t\t\tinterpolant.settings = interpolantSettings;\n\n\t\t}\n\n\t\tthis._interpolantSettings = interpolantSettings;\n\n\t\tthis._interpolants = interpolants; // bound by the mixer\n\n\t\t// inside: PropertyMixer (managed by the mixer)\n\t\tthis._propertyBindings = new Array( nTracks );\n\n\t\tthis._cacheIndex = null; // for the memory manager\n\t\tthis._byClipCacheIndex = null; // for the memory manager\n\n\t\tthis._timeScaleInterpolant = null;\n\t\tthis._weightInterpolant = null;\n\n\t\tthis.loop = LoopRepeat;\n\t\tthis._loopCount = - 1;\n\n\t\t// global mixer time when the action is to be started\n\t\t// it's set back to 'null' upon start of the action\n\t\tthis._startTime = null;\n\n\t\t// scaled local time of the action\n\t\t// gets clamped or wrapped to 0..clip.duration according to loop\n\t\tthis.time = 0;\n\n\t\tthis.timeScale = 1;\n\t\tthis._effectiveTimeScale = 1;\n\n\t\tthis.weight = 1;\n\t\tthis._effectiveWeight = 1;\n\n\t\tthis.repetitions = Infinity; // no. of repetitions when looping\n\n\t\tthis.paused = false; // true -> zero effective time scale\n\t\tthis.enabled = true; // false -> zero effective weight\n\n\t\tthis.clampWhenFinished = false;// keep feeding the last frame?\n\n\t\tthis.zeroSlopeAtStart = true;// for smooth interpolation w/o separate\n\t\tthis.zeroSlopeAtEnd = true;// clips for start, loop and end\n\n\t}\n\n\t// State & Scheduling\n\n\tplay() {\n\n\t\tthis._mixer._activateAction( this );\n\n\t\treturn this;\n\n\t}\n\n\tstop() {\n\n\t\tthis._mixer._deactivateAction( this );\n\n\t\treturn this.reset();\n\n\t}\n\n\treset() {\n\n\t\tthis.paused = false;\n\t\tthis.enabled = true;\n\n\t\tthis.time = 0; // restart clip\n\t\tthis._loopCount = - 1;// forget previous loops\n\t\tthis._startTime = null;// forget scheduling\n\n\t\treturn this.stopFading().stopWarping();\n\n\t}\n\n\tisRunning() {\n\n\t\treturn this.enabled && ! this.paused && this.timeScale !== 0 &&\n\t\t\tthis._startTime === null && this._mixer._isActiveAction( this );\n\n\t}\n\n\t// return true when play has been called\n\tisScheduled() {\n\n\t\treturn this._mixer._isActiveAction( this );\n\n\t}\n\n\tstartAt( time ) {\n\n\t\tthis._startTime = time;\n\n\t\treturn this;\n\n\t}\n\n\tsetLoop( mode, repetitions ) {\n\n\t\tthis.loop = mode;\n\t\tthis.repetitions = repetitions;\n\n\t\treturn this;\n\n\t}\n\n\t// Weight\n\n\t// set the weight stopping any scheduled fading\n\t// although .enabled = false yields an effective weight of zero, this\n\t// method does *not* change .enabled, because it would be confusing\n\tsetEffectiveWeight( weight ) {\n\n\t\tthis.weight = weight;\n\n\t\t// note: same logic as when updated at runtime\n\t\tthis._effectiveWeight = this.enabled ? weight : 0;\n\n\t\treturn this.stopFading();\n\n\t}\n\n\t// return the weight considering fading and .enabled\n\tgetEffectiveWeight() {\n\n\t\treturn this._effectiveWeight;\n\n\t}\n\n\tfadeIn( duration ) {\n\n\t\treturn this._scheduleFading( duration, 0, 1 );\n\n\t}\n\n\tfadeOut( duration ) {\n\n\t\treturn this._scheduleFading( duration, 1, 0 );\n\n\t}\n\n\tcrossFadeFrom( fadeOutAction, duration, warp ) {\n\n\t\tfadeOutAction.fadeOut( duration );\n\t\tthis.fadeIn( duration );\n\n\t\tif ( warp ) {\n\n\t\t\tconst fadeInDuration = this._clip.duration,\n\t\t\t\tfadeOutDuration = fadeOutAction._clip.duration,\n\n\t\t\t\tstartEndRatio = fadeOutDuration / fadeInDuration,\n\t\t\t\tendStartRatio = fadeInDuration / fadeOutDuration;\n\n\t\t\tfadeOutAction.warp( 1.0, startEndRatio, duration );\n\t\t\tthis.warp( endStartRatio, 1.0, duration );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tcrossFadeTo( fadeInAction, duration, warp ) {\n\n\t\treturn fadeInAction.crossFadeFrom( this, duration, warp );\n\n\t}\n\n\tstopFading() {\n\n\t\tconst weightInterpolant = this._weightInterpolant;\n\n\t\tif ( weightInterpolant !== null ) {\n\n\t\t\tthis._weightInterpolant = null;\n\t\t\tthis._mixer._takeBackControlInterpolant( weightInterpolant );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\t// Time Scale Control\n\n\t// set the time scale stopping any scheduled warping\n\t// although .paused = true yields an effective time scale of zero, this\n\t// method does *not* change .paused, because it would be confusing\n\tsetEffectiveTimeScale( timeScale ) {\n\n\t\tthis.timeScale = timeScale;\n\t\tthis._effectiveTimeScale = this.paused ? 0 : timeScale;\n\n\t\treturn this.stopWarping();\n\n\t}\n\n\t// return the time scale considering warping and .paused\n\tgetEffectiveTimeScale() {\n\n\t\treturn this._effectiveTimeScale;\n\n\t}\n\n\tsetDuration( duration ) {\n\n\t\tthis.timeScale = this._clip.duration / duration;\n\n\t\treturn this.stopWarping();\n\n\t}\n\n\tsyncWith( action ) {\n\n\t\tthis.time = action.time;\n\t\tthis.timeScale = action.timeScale;\n\n\t\treturn this.stopWarping();\n\n\t}\n\n\thalt( duration ) {\n\n\t\treturn this.warp( this._effectiveTimeScale, 0, duration );\n\n\t}\n\n\twarp( startTimeScale, endTimeScale, duration ) {\n\n\t\tconst mixer = this._mixer,\n\t\t\tnow = mixer.time,\n\t\t\ttimeScale = this.timeScale;\n\n\t\tlet interpolant = this._timeScaleInterpolant;\n\n\t\tif ( interpolant === null ) {\n\n\t\t\tinterpolant = mixer._lendControlInterpolant();\n\t\t\tthis._timeScaleInterpolant = interpolant;\n\n\t\t}\n\n\t\tconst times = interpolant.parameterPositions,\n\t\t\tvalues = interpolant.sampleValues;\n\n\t\ttimes[ 0 ] = now;\n\t\ttimes[ 1 ] = now + duration;\n\n\t\tvalues[ 0 ] = startTimeScale / timeScale;\n\t\tvalues[ 1 ] = endTimeScale / timeScale;\n\n\t\treturn this;\n\n\t}\n\n\tstopWarping() {\n\n\t\tconst timeScaleInterpolant = this._timeScaleInterpolant;\n\n\t\tif ( timeScaleInterpolant !== null ) {\n\n\t\t\tthis._timeScaleInterpolant = null;\n\t\t\tthis._mixer._takeBackControlInterpolant( timeScaleInterpolant );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\t// Object Accessors\n\n\tgetMixer() {\n\n\t\treturn this._mixer;\n\n\t}\n\n\tgetClip() {\n\n\t\treturn this._clip;\n\n\t}\n\n\tgetRoot() {\n\n\t\treturn this._localRoot || this._mixer._root;\n\n\t}\n\n\t// Interna\n\n\t_update( time, deltaTime, timeDirection, accuIndex ) {\n\n\t\t// called by the mixer\n\n\t\tif ( ! this.enabled ) {\n\n\t\t\t// call ._updateWeight() to update ._effectiveWeight\n\n\t\t\tthis._updateWeight( time );\n\t\t\treturn;\n\n\t\t}\n\n\t\tconst startTime = this._startTime;\n\n\t\tif ( startTime !== null ) {\n\n\t\t\t// check for scheduled start of action\n\n\t\t\tconst timeRunning = ( time - startTime ) * timeDirection;\n\t\t\tif ( timeRunning < 0 || timeDirection === 0 ) {\n\n\t\t\t\tdeltaTime = 0;\n\n\t\t\t} else {\n\n\n\t\t\t\tthis._startTime = null; // unschedule\n\t\t\t\tdeltaTime = timeDirection * timeRunning;\n\n\t\t\t}\n\n\t\t}\n\n\t\t// apply time scale and advance time\n\n\t\tdeltaTime *= this._updateTimeScale( time );\n\t\tconst clipTime = this._updateTime( deltaTime );\n\n\t\t// note: _updateTime may disable the action resulting in\n\t\t// an effective weight of 0\n\n\t\tconst weight = this._updateWeight( time );\n\n\t\tif ( weight > 0 ) {\n\n\t\t\tconst interpolants = this._interpolants;\n\t\t\tconst propertyMixers = this._propertyBindings;\n\n\t\t\tswitch ( this.blendMode ) {\n\n\t\t\t\tcase AdditiveAnimationBlendMode:\n\n\t\t\t\t\tfor ( let j = 0, m = interpolants.length; j !== m; ++ j ) {\n\n\t\t\t\t\t\tinterpolants[ j ].evaluate( clipTime );\n\t\t\t\t\t\tpropertyMixers[ j ].accumulateAdditive( weight );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase NormalAnimationBlendMode:\n\t\t\t\tdefault:\n\n\t\t\t\t\tfor ( let j = 0, m = interpolants.length; j !== m; ++ j ) {\n\n\t\t\t\t\t\tinterpolants[ j ].evaluate( clipTime );\n\t\t\t\t\t\tpropertyMixers[ j ].accumulate( accuIndex, weight );\n\n\t\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\t_updateWeight( time ) {\n\n\t\tlet weight = 0;\n\n\t\tif ( this.enabled ) {\n\n\t\t\tweight = this.weight;\n\t\t\tconst interpolant = this._weightInterpolant;\n\n\t\t\tif ( interpolant !== null ) {\n\n\t\t\t\tconst interpolantValue = interpolant.evaluate( time )[ 0 ];\n\n\t\t\t\tweight *= interpolantValue;\n\n\t\t\t\tif ( time > interpolant.parameterPositions[ 1 ] ) {\n\n\t\t\t\t\tthis.stopFading();\n\n\t\t\t\t\tif ( interpolantValue === 0 ) {\n\n\t\t\t\t\t\t// faded out, disable\n\t\t\t\t\t\tthis.enabled = false;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tthis._effectiveWeight = weight;\n\t\treturn weight;\n\n\t}\n\n\t_updateTimeScale( time ) {\n\n\t\tlet timeScale = 0;\n\n\t\tif ( ! this.paused ) {\n\n\t\t\ttimeScale = this.timeScale;\n\n\t\t\tconst interpolant = this._timeScaleInterpolant;\n\n\t\t\tif ( interpolant !== null ) {\n\n\t\t\t\tconst interpolantValue = interpolant.evaluate( time )[ 0 ];\n\n\t\t\t\ttimeScale *= interpolantValue;\n\n\t\t\t\tif ( time > interpolant.parameterPositions[ 1 ] ) {\n\n\t\t\t\t\tthis.stopWarping();\n\n\t\t\t\t\tif ( timeScale === 0 ) {\n\n\t\t\t\t\t\t// motion has halted, pause\n\t\t\t\t\t\tthis.paused = true;\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\t// warp done - apply final time scale\n\t\t\t\t\t\tthis.timeScale = timeScale;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tthis._effectiveTimeScale = timeScale;\n\t\treturn timeScale;\n\n\t}\n\n\t_updateTime( deltaTime ) {\n\n\t\tconst duration = this._clip.duration;\n\t\tconst loop = this.loop;\n\n\t\tlet time = this.time + deltaTime;\n\t\tlet loopCount = this._loopCount;\n\n\t\tconst pingPong = ( loop === LoopPingPong );\n\n\t\tif ( deltaTime === 0 ) {\n\n\t\t\tif ( loopCount === - 1 ) return time;\n\n\t\t\treturn ( pingPong && ( loopCount & 1 ) === 1 ) ? duration - time : time;\n\n\t\t}\n\n\t\tif ( loop === LoopOnce ) {\n\n\t\t\tif ( loopCount === - 1 ) {\n\n\t\t\t\t// just started\n\n\t\t\t\tthis._loopCount = 0;\n\t\t\t\tthis._setEndings( true, true, false );\n\n\t\t\t}\n\n\t\t\thandle_stop: {\n\n\t\t\t\tif ( time >= duration ) {\n\n\t\t\t\t\ttime = duration;\n\n\t\t\t\t} else if ( time < 0 ) {\n\n\t\t\t\t\ttime = 0;\n\n\t\t\t\t} else {\n\n\t\t\t\t\tthis.time = time;\n\n\t\t\t\t\tbreak handle_stop;\n\n\t\t\t\t}\n\n\t\t\t\tif ( this.clampWhenFinished ) this.paused = true;\n\t\t\t\telse this.enabled = false;\n\n\t\t\t\tthis.time = time;\n\n\t\t\t\tthis._mixer.dispatchEvent( {\n\t\t\t\t\ttype: 'finished', action: this,\n\t\t\t\t\tdirection: deltaTime < 0 ? - 1 : 1\n\t\t\t\t} );\n\n\t\t\t}\n\n\t\t} else { // repetitive Repeat or PingPong\n\n\t\t\tif ( loopCount === - 1 ) {\n\n\t\t\t\t// just started\n\n\t\t\t\tif ( deltaTime >= 0 ) {\n\n\t\t\t\t\tloopCount = 0;\n\n\t\t\t\t\tthis._setEndings( true, this.repetitions === 0, pingPong );\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// when looping in reverse direction, the initial\n\t\t\t\t\t// transition through zero counts as a repetition,\n\t\t\t\t\t// so leave loopCount at -1\n\n\t\t\t\t\tthis._setEndings( this.repetitions === 0, true, pingPong );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tif ( time >= duration || time < 0 ) {\n\n\t\t\t\t// wrap around\n\n\t\t\t\tconst loopDelta = Math.floor( time / duration ); // signed\n\t\t\t\ttime -= duration * loopDelta;\n\n\t\t\t\tloopCount += Math.abs( loopDelta );\n\n\t\t\t\tconst pending = this.repetitions - loopCount;\n\n\t\t\t\tif ( pending <= 0 ) {\n\n\t\t\t\t\t// have to stop (switch state, clamp time, fire event)\n\n\t\t\t\t\tif ( this.clampWhenFinished ) this.paused = true;\n\t\t\t\t\telse this.enabled = false;\n\n\t\t\t\t\ttime = deltaTime > 0 ? duration : 0;\n\n\t\t\t\t\tthis.time = time;\n\n\t\t\t\t\tthis._mixer.dispatchEvent( {\n\t\t\t\t\t\ttype: 'finished', action: this,\n\t\t\t\t\t\tdirection: deltaTime > 0 ? 1 : - 1\n\t\t\t\t\t} );\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// keep running\n\n\t\t\t\t\tif ( pending === 1 ) {\n\n\t\t\t\t\t\t// entering the last round\n\n\t\t\t\t\t\tconst atStart = deltaTime < 0;\n\t\t\t\t\t\tthis._setEndings( atStart, ! atStart, pingPong );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tthis._setEndings( false, false, pingPong );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tthis._loopCount = loopCount;\n\n\t\t\t\t\tthis.time = time;\n\n\t\t\t\t\tthis._mixer.dispatchEvent( {\n\t\t\t\t\t\ttype: 'loop', action: this, loopDelta: loopDelta\n\t\t\t\t\t} );\n\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\tthis.time = time;\n\n\t\t\t}\n\n\t\t\tif ( pingPong && ( loopCount & 1 ) === 1 ) {\n\n\t\t\t\t// invert time for the \"pong round\"\n\n\t\t\t\treturn duration - time;\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn time;\n\n\t}\n\n\t_setEndings( atStart, atEnd, pingPong ) {\n\n\t\tconst settings = this._interpolantSettings;\n\n\t\tif ( pingPong ) {\n\n\t\t\tsettings.endingStart = ZeroSlopeEnding;\n\t\t\tsettings.endingEnd = ZeroSlopeEnding;\n\n\t\t} else {\n\n\t\t\t// assuming for LoopOnce atStart == atEnd == true\n\n\t\t\tif ( atStart ) {\n\n\t\t\t\tsettings.endingStart = this.zeroSlopeAtStart ? ZeroSlopeEnding : ZeroCurvatureEnding;\n\n\t\t\t} else {\n\n\t\t\t\tsettings.endingStart = WrapAroundEnding;\n\n\t\t\t}\n\n\t\t\tif ( atEnd ) {\n\n\t\t\t\tsettings.endingEnd = this.zeroSlopeAtEnd ? ZeroSlopeEnding : ZeroCurvatureEnding;\n\n\t\t\t} else {\n\n\t\t\t\tsettings.endingEnd \t = WrapAroundEnding;\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\t_scheduleFading( duration, weightNow, weightThen ) {\n\n\t\tconst mixer = this._mixer, now = mixer.time;\n\t\tlet interpolant = this._weightInterpolant;\n\n\t\tif ( interpolant === null ) {\n\n\t\t\tinterpolant = mixer._lendControlInterpolant();\n\t\t\tthis._weightInterpolant = interpolant;\n\n\t\t}\n\n\t\tconst times = interpolant.parameterPositions,\n\t\t\tvalues = interpolant.sampleValues;\n\n\t\ttimes[ 0 ] = now;\n\t\tvalues[ 0 ] = weightNow;\n\t\ttimes[ 1 ] = now + duration;\n\t\tvalues[ 1 ] = weightThen;\n\n\t\treturn this;\n\n\t}\n\n}\n\nconst _controlInterpolantsResultBuffer = new Float32Array( 1 );\n\n\nclass AnimationMixer extends EventDispatcher {\n\n\tconstructor( root ) {\n\n\t\tsuper();\n\n\t\tthis._root = root;\n\t\tthis._initMemoryManager();\n\t\tthis._accuIndex = 0;\n\t\tthis.time = 0;\n\t\tthis.timeScale = 1.0;\n\n\t}\n\n\t_bindAction( action, prototypeAction ) {\n\n\t\tconst root = action._localRoot || this._root,\n\t\t\ttracks = action._clip.tracks,\n\t\t\tnTracks = tracks.length,\n\t\t\tbindings = action._propertyBindings,\n\t\t\tinterpolants = action._interpolants,\n\t\t\trootUuid = root.uuid,\n\t\t\tbindingsByRoot = this._bindingsByRootAndName;\n\n\t\tlet bindingsByName = bindingsByRoot[ rootUuid ];\n\n\t\tif ( bindingsByName === undefined ) {\n\n\t\t\tbindingsByName = {};\n\t\t\tbindingsByRoot[ rootUuid ] = bindingsByName;\n\n\t\t}\n\n\t\tfor ( let i = 0; i !== nTracks; ++ i ) {\n\n\t\t\tconst track = tracks[ i ],\n\t\t\t\ttrackName = track.name;\n\n\t\t\tlet binding = bindingsByName[ trackName ];\n\n\t\t\tif ( binding !== undefined ) {\n\n\t\t\t\t++ binding.referenceCount;\n\t\t\t\tbindings[ i ] = binding;\n\n\t\t\t} else {\n\n\t\t\t\tbinding = bindings[ i ];\n\n\t\t\t\tif ( binding !== undefined ) {\n\n\t\t\t\t\t// existing binding, make sure the cache knows\n\n\t\t\t\t\tif ( binding._cacheIndex === null ) {\n\n\t\t\t\t\t\t++ binding.referenceCount;\n\t\t\t\t\t\tthis._addInactiveBinding( binding, rootUuid, trackName );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tcontinue;\n\n\t\t\t\t}\n\n\t\t\t\tconst path = prototypeAction && prototypeAction.\n\t\t\t\t\t_propertyBindings[ i ].binding.parsedPath;\n\n\t\t\t\tbinding = new PropertyMixer(\n\t\t\t\t\tPropertyBinding.create( root, trackName, path ),\n\t\t\t\t\ttrack.ValueTypeName, track.getValueSize() );\n\n\t\t\t\t++ binding.referenceCount;\n\t\t\t\tthis._addInactiveBinding( binding, rootUuid, trackName );\n\n\t\t\t\tbindings[ i ] = binding;\n\n\t\t\t}\n\n\t\t\tinterpolants[ i ].resultBuffer = binding.buffer;\n\n\t\t}\n\n\t}\n\n\t_activateAction( action ) {\n\n\t\tif ( ! this._isActiveAction( action ) ) {\n\n\t\t\tif ( action._cacheIndex === null ) {\n\n\t\t\t\t// this action has been forgotten by the cache, but the user\n\t\t\t\t// appears to be still using it -> rebind\n\n\t\t\t\tconst rootUuid = ( action._localRoot || this._root ).uuid,\n\t\t\t\t\tclipUuid = action._clip.uuid,\n\t\t\t\t\tactionsForClip = this._actionsByClip[ clipUuid ];\n\n\t\t\t\tthis._bindAction( action,\n\t\t\t\t\tactionsForClip && actionsForClip.knownActions[ 0 ] );\n\n\t\t\t\tthis._addInactiveAction( action, clipUuid, rootUuid );\n\n\t\t\t}\n\n\t\t\tconst bindings = action._propertyBindings;\n\n\t\t\t// increment reference counts / sort out state\n\t\t\tfor ( let i = 0, n = bindings.length; i !== n; ++ i ) {\n\n\t\t\t\tconst binding = bindings[ i ];\n\n\t\t\t\tif ( binding.useCount ++ === 0 ) {\n\n\t\t\t\t\tthis._lendBinding( binding );\n\t\t\t\t\tbinding.saveOriginalState();\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tthis._lendAction( action );\n\n\t\t}\n\n\t}\n\n\t_deactivateAction( action ) {\n\n\t\tif ( this._isActiveAction( action ) ) {\n\n\t\t\tconst bindings = action._propertyBindings;\n\n\t\t\t// decrement reference counts / sort out state\n\t\t\tfor ( let i = 0, n = bindings.length; i !== n; ++ i ) {\n\n\t\t\t\tconst binding = bindings[ i ];\n\n\t\t\t\tif ( -- binding.useCount === 0 ) {\n\n\t\t\t\t\tbinding.restoreOriginalState();\n\t\t\t\t\tthis._takeBackBinding( binding );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tthis._takeBackAction( action );\n\n\t\t}\n\n\t}\n\n\t// Memory manager\n\n\t_initMemoryManager() {\n\n\t\tthis._actions = []; // 'nActiveActions' followed by inactive ones\n\t\tthis._nActiveActions = 0;\n\n\t\tthis._actionsByClip = {};\n\t\t// inside:\n\t\t// {\n\t\t// \tknownActions: Array< AnimationAction > - used as prototypes\n\t\t// \tactionByRoot: AnimationAction - lookup\n\t\t// }\n\n\n\t\tthis._bindings = []; // 'nActiveBindings' followed by inactive ones\n\t\tthis._nActiveBindings = 0;\n\n\t\tthis._bindingsByRootAndName = {}; // inside: Map< name, PropertyMixer >\n\n\n\t\tthis._controlInterpolants = []; // same game as above\n\t\tthis._nActiveControlInterpolants = 0;\n\n\t\tconst scope = this;\n\n\t\tthis.stats = {\n\n\t\t\tactions: {\n\t\t\t\tget total() {\n\n\t\t\t\t\treturn scope._actions.length;\n\n\t\t\t\t},\n\t\t\t\tget inUse() {\n\n\t\t\t\t\treturn scope._nActiveActions;\n\n\t\t\t\t}\n\t\t\t},\n\t\t\tbindings: {\n\t\t\t\tget total() {\n\n\t\t\t\t\treturn scope._bindings.length;\n\n\t\t\t\t},\n\t\t\t\tget inUse() {\n\n\t\t\t\t\treturn scope._nActiveBindings;\n\n\t\t\t\t}\n\t\t\t},\n\t\t\tcontrolInterpolants: {\n\t\t\t\tget total() {\n\n\t\t\t\t\treturn scope._controlInterpolants.length;\n\n\t\t\t\t},\n\t\t\t\tget inUse() {\n\n\t\t\t\t\treturn scope._nActiveControlInterpolants;\n\n\t\t\t\t}\n\t\t\t}\n\n\t\t};\n\n\t}\n\n\t// Memory management for AnimationAction objects\n\n\t_isActiveAction( action ) {\n\n\t\tconst index = action._cacheIndex;\n\t\treturn index !== null && index < this._nActiveActions;\n\n\t}\n\n\t_addInactiveAction( action, clipUuid, rootUuid ) {\n\n\t\tconst actions = this._actions,\n\t\t\tactionsByClip = this._actionsByClip;\n\n\t\tlet actionsForClip = actionsByClip[ clipUuid ];\n\n\t\tif ( actionsForClip === undefined ) {\n\n\t\t\tactionsForClip = {\n\n\t\t\t\tknownActions: [ action ],\n\t\t\t\tactionByRoot: {}\n\n\t\t\t};\n\n\t\t\taction._byClipCacheIndex = 0;\n\n\t\t\tactionsByClip[ clipUuid ] = actionsForClip;\n\n\t\t} else {\n\n\t\t\tconst knownActions = actionsForClip.knownActions;\n\n\t\t\taction._byClipCacheIndex = knownActions.length;\n\t\t\tknownActions.push( action );\n\n\t\t}\n\n\t\taction._cacheIndex = actions.length;\n\t\tactions.push( action );\n\n\t\tactionsForClip.actionByRoot[ rootUuid ] = action;\n\n\t}\n\n\t_removeInactiveAction( action ) {\n\n\t\tconst actions = this._actions,\n\t\t\tlastInactiveAction = actions[ actions.length - 1 ],\n\t\t\tcacheIndex = action._cacheIndex;\n\n\t\tlastInactiveAction._cacheIndex = cacheIndex;\n\t\tactions[ cacheIndex ] = lastInactiveAction;\n\t\tactions.pop();\n\n\t\taction._cacheIndex = null;\n\n\n\t\tconst clipUuid = action._clip.uuid,\n\t\t\tactionsByClip = this._actionsByClip,\n\t\t\tactionsForClip = actionsByClip[ clipUuid ],\n\t\t\tknownActionsForClip = actionsForClip.knownActions,\n\n\t\t\tlastKnownAction =\n\t\t\t\tknownActionsForClip[ knownActionsForClip.length - 1 ],\n\n\t\t\tbyClipCacheIndex = action._byClipCacheIndex;\n\n\t\tlastKnownAction._byClipCacheIndex = byClipCacheIndex;\n\t\tknownActionsForClip[ byClipCacheIndex ] = lastKnownAction;\n\t\tknownActionsForClip.pop();\n\n\t\taction._byClipCacheIndex = null;\n\n\n\t\tconst actionByRoot = actionsForClip.actionByRoot,\n\t\t\trootUuid = ( action._localRoot || this._root ).uuid;\n\n\t\tdelete actionByRoot[ rootUuid ];\n\n\t\tif ( knownActionsForClip.length === 0 ) {\n\n\t\t\tdelete actionsByClip[ clipUuid ];\n\n\t\t}\n\n\t\tthis._removeInactiveBindingsForAction( action );\n\n\t}\n\n\t_removeInactiveBindingsForAction( action ) {\n\n\t\tconst bindings = action._propertyBindings;\n\n\t\tfor ( let i = 0, n = bindings.length; i !== n; ++ i ) {\n\n\t\t\tconst binding = bindings[ i ];\n\n\t\t\tif ( -- binding.referenceCount === 0 ) {\n\n\t\t\t\tthis._removeInactiveBinding( binding );\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\t_lendAction( action ) {\n\n\t\t// [ active actions | inactive actions ]\n\t\t// [ active actions >| inactive actions ]\n\t\t// s a\n\t\t// <-swap->\n\t\t// a s\n\n\t\tconst actions = this._actions,\n\t\t\tprevIndex = action._cacheIndex,\n\n\t\t\tlastActiveIndex = this._nActiveActions ++,\n\n\t\t\tfirstInactiveAction = actions[ lastActiveIndex ];\n\n\t\taction._cacheIndex = lastActiveIndex;\n\t\tactions[ lastActiveIndex ] = action;\n\n\t\tfirstInactiveAction._cacheIndex = prevIndex;\n\t\tactions[ prevIndex ] = firstInactiveAction;\n\n\t}\n\n\t_takeBackAction( action ) {\n\n\t\t// [ active actions | inactive actions ]\n\t\t// [ active actions |< inactive actions ]\n\t\t// a s\n\t\t// <-swap->\n\t\t// s a\n\n\t\tconst actions = this._actions,\n\t\t\tprevIndex = action._cacheIndex,\n\n\t\t\tfirstInactiveIndex = -- this._nActiveActions,\n\n\t\t\tlastActiveAction = actions[ firstInactiveIndex ];\n\n\t\taction._cacheIndex = firstInactiveIndex;\n\t\tactions[ firstInactiveIndex ] = action;\n\n\t\tlastActiveAction._cacheIndex = prevIndex;\n\t\tactions[ prevIndex ] = lastActiveAction;\n\n\t}\n\n\t// Memory management for PropertyMixer objects\n\n\t_addInactiveBinding( binding, rootUuid, trackName ) {\n\n\t\tconst bindingsByRoot = this._bindingsByRootAndName,\n\t\t\tbindings = this._bindings;\n\n\t\tlet bindingByName = bindingsByRoot[ rootUuid ];\n\n\t\tif ( bindingByName === undefined ) {\n\n\t\t\tbindingByName = {};\n\t\t\tbindingsByRoot[ rootUuid ] = bindingByName;\n\n\t\t}\n\n\t\tbindingByName[ trackName ] = binding;\n\n\t\tbinding._cacheIndex = bindings.length;\n\t\tbindings.push( binding );\n\n\t}\n\n\t_removeInactiveBinding( binding ) {\n\n\t\tconst bindings = this._bindings,\n\t\t\tpropBinding = binding.binding,\n\t\t\trootUuid = propBinding.rootNode.uuid,\n\t\t\ttrackName = propBinding.path,\n\t\t\tbindingsByRoot = this._bindingsByRootAndName,\n\t\t\tbindingByName = bindingsByRoot[ rootUuid ],\n\n\t\t\tlastInactiveBinding = bindings[ bindings.length - 1 ],\n\t\t\tcacheIndex = binding._cacheIndex;\n\n\t\tlastInactiveBinding._cacheIndex = cacheIndex;\n\t\tbindings[ cacheIndex ] = lastInactiveBinding;\n\t\tbindings.pop();\n\n\t\tdelete bindingByName[ trackName ];\n\n\t\tif ( Object.keys( bindingByName ).length === 0 ) {\n\n\t\t\tdelete bindingsByRoot[ rootUuid ];\n\n\t\t}\n\n\t}\n\n\t_lendBinding( binding ) {\n\n\t\tconst bindings = this._bindings,\n\t\t\tprevIndex = binding._cacheIndex,\n\n\t\t\tlastActiveIndex = this._nActiveBindings ++,\n\n\t\t\tfirstInactiveBinding = bindings[ lastActiveIndex ];\n\n\t\tbinding._cacheIndex = lastActiveIndex;\n\t\tbindings[ lastActiveIndex ] = binding;\n\n\t\tfirstInactiveBinding._cacheIndex = prevIndex;\n\t\tbindings[ prevIndex ] = firstInactiveBinding;\n\n\t}\n\n\t_takeBackBinding( binding ) {\n\n\t\tconst bindings = this._bindings,\n\t\t\tprevIndex = binding._cacheIndex,\n\n\t\t\tfirstInactiveIndex = -- this._nActiveBindings,\n\n\t\t\tlastActiveBinding = bindings[ firstInactiveIndex ];\n\n\t\tbinding._cacheIndex = firstInactiveIndex;\n\t\tbindings[ firstInactiveIndex ] = binding;\n\n\t\tlastActiveBinding._cacheIndex = prevIndex;\n\t\tbindings[ prevIndex ] = lastActiveBinding;\n\n\t}\n\n\n\t// Memory management of Interpolants for weight and time scale\n\n\t_lendControlInterpolant() {\n\n\t\tconst interpolants = this._controlInterpolants,\n\t\t\tlastActiveIndex = this._nActiveControlInterpolants ++;\n\n\t\tlet interpolant = interpolants[ lastActiveIndex ];\n\n\t\tif ( interpolant === undefined ) {\n\n\t\t\tinterpolant = new LinearInterpolant(\n\t\t\t\tnew Float32Array( 2 ), new Float32Array( 2 ),\n\t\t\t\t1, _controlInterpolantsResultBuffer );\n\n\t\t\tinterpolant.__cacheIndex = lastActiveIndex;\n\t\t\tinterpolants[ lastActiveIndex ] = interpolant;\n\n\t\t}\n\n\t\treturn interpolant;\n\n\t}\n\n\t_takeBackControlInterpolant( interpolant ) {\n\n\t\tconst interpolants = this._controlInterpolants,\n\t\t\tprevIndex = interpolant.__cacheIndex,\n\n\t\t\tfirstInactiveIndex = -- this._nActiveControlInterpolants,\n\n\t\t\tlastActiveInterpolant = interpolants[ firstInactiveIndex ];\n\n\t\tinterpolant.__cacheIndex = firstInactiveIndex;\n\t\tinterpolants[ firstInactiveIndex ] = interpolant;\n\n\t\tlastActiveInterpolant.__cacheIndex = prevIndex;\n\t\tinterpolants[ prevIndex ] = lastActiveInterpolant;\n\n\t}\n\n\t// return an action for a clip optionally using a custom root target\n\t// object (this method allocates a lot of dynamic memory in case a\n\t// previously unknown clip/root combination is specified)\n\tclipAction( clip, optionalRoot, blendMode ) {\n\n\t\tconst root = optionalRoot || this._root,\n\t\t\trootUuid = root.uuid;\n\n\t\tlet clipObject = typeof clip === 'string' ? AnimationClip.findByName( root, clip ) : clip;\n\n\t\tconst clipUuid = clipObject !== null ? clipObject.uuid : clip;\n\n\t\tconst actionsForClip = this._actionsByClip[ clipUuid ];\n\t\tlet prototypeAction = null;\n\n\t\tif ( blendMode === undefined ) {\n\n\t\t\tif ( clipObject !== null ) {\n\n\t\t\t\tblendMode = clipObject.blendMode;\n\n\t\t\t} else {\n\n\t\t\t\tblendMode = NormalAnimationBlendMode;\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( actionsForClip !== undefined ) {\n\n\t\t\tconst existingAction = actionsForClip.actionByRoot[ rootUuid ];\n\n\t\t\tif ( existingAction !== undefined && existingAction.blendMode === blendMode ) {\n\n\t\t\t\treturn existingAction;\n\n\t\t\t}\n\n\t\t\t// we know the clip, so we don't have to parse all\n\t\t\t// the bindings again but can just copy\n\t\t\tprototypeAction = actionsForClip.knownActions[ 0 ];\n\n\t\t\t// also, take the clip from the prototype action\n\t\t\tif ( clipObject === null )\n\t\t\t\tclipObject = prototypeAction._clip;\n\n\t\t}\n\n\t\t// clip must be known when specified via string\n\t\tif ( clipObject === null ) return null;\n\n\t\t// allocate all resources required to run it\n\t\tconst newAction = new AnimationAction( this, clipObject, optionalRoot, blendMode );\n\n\t\tthis._bindAction( newAction, prototypeAction );\n\n\t\t// and make the action known to the memory manager\n\t\tthis._addInactiveAction( newAction, clipUuid, rootUuid );\n\n\t\treturn newAction;\n\n\t}\n\n\t// get an existing action\n\texistingAction( clip, optionalRoot ) {\n\n\t\tconst root = optionalRoot || this._root,\n\t\t\trootUuid = root.uuid,\n\n\t\t\tclipObject = typeof clip === 'string' ?\n\t\t\t\tAnimationClip.findByName( root, clip ) : clip,\n\n\t\t\tclipUuid = clipObject ? clipObject.uuid : clip,\n\n\t\t\tactionsForClip = this._actionsByClip[ clipUuid ];\n\n\t\tif ( actionsForClip !== undefined ) {\n\n\t\t\treturn actionsForClip.actionByRoot[ rootUuid ] || null;\n\n\t\t}\n\n\t\treturn null;\n\n\t}\n\n\t// deactivates all previously scheduled actions\n\tstopAllAction() {\n\n\t\tconst actions = this._actions,\n\t\t\tnActions = this._nActiveActions;\n\n\t\tfor ( let i = nActions - 1; i >= 0; -- i ) {\n\n\t\t\tactions[ i ].stop();\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\t// advance the time and update apply the animation\n\tupdate( deltaTime ) {\n\n\t\tdeltaTime *= this.timeScale;\n\n\t\tconst actions = this._actions,\n\t\t\tnActions = this._nActiveActions,\n\n\t\t\ttime = this.time += deltaTime,\n\t\t\ttimeDirection = Math.sign( deltaTime ),\n\n\t\t\taccuIndex = this._accuIndex ^= 1;\n\n\t\t// run active actions\n\n\t\tfor ( let i = 0; i !== nActions; ++ i ) {\n\n\t\t\tconst action = actions[ i ];\n\n\t\t\taction._update( time, deltaTime, timeDirection, accuIndex );\n\n\t\t}\n\n\t\t// update scene graph\n\n\t\tconst bindings = this._bindings,\n\t\t\tnBindings = this._nActiveBindings;\n\n\t\tfor ( let i = 0; i !== nBindings; ++ i ) {\n\n\t\t\tbindings[ i ].apply( accuIndex );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\t// Allows you to seek to a specific time in an animation.\n\tsetTime( timeInSeconds ) {\n\n\t\tthis.time = 0; // Zero out time attribute for AnimationMixer object;\n\t\tfor ( let i = 0; i < this._actions.length; i ++ ) {\n\n\t\t\tthis._actions[ i ].time = 0; // Zero out time attribute for all associated AnimationAction objects.\n\n\t\t}\n\n\t\treturn this.update( timeInSeconds ); // Update used to set exact time. Returns \"this\" AnimationMixer object.\n\n\t}\n\n\t// return this mixer's root target object\n\tgetRoot() {\n\n\t\treturn this._root;\n\n\t}\n\n\t// free all resources specific to a particular clip\n\tuncacheClip( clip ) {\n\n\t\tconst actions = this._actions,\n\t\t\tclipUuid = clip.uuid,\n\t\t\tactionsByClip = this._actionsByClip,\n\t\t\tactionsForClip = actionsByClip[ clipUuid ];\n\n\t\tif ( actionsForClip !== undefined ) {\n\n\t\t\t// note: just calling _removeInactiveAction would mess up the\n\t\t\t// iteration state and also require updating the state we can\n\t\t\t// just throw away\n\n\t\t\tconst actionsToRemove = actionsForClip.knownActions;\n\n\t\t\tfor ( let i = 0, n = actionsToRemove.length; i !== n; ++ i ) {\n\n\t\t\t\tconst action = actionsToRemove[ i ];\n\n\t\t\t\tthis._deactivateAction( action );\n\n\t\t\t\tconst cacheIndex = action._cacheIndex,\n\t\t\t\t\tlastInactiveAction = actions[ actions.length - 1 ];\n\n\t\t\t\taction._cacheIndex = null;\n\t\t\t\taction._byClipCacheIndex = null;\n\n\t\t\t\tlastInactiveAction._cacheIndex = cacheIndex;\n\t\t\t\tactions[ cacheIndex ] = lastInactiveAction;\n\t\t\t\tactions.pop();\n\n\t\t\t\tthis._removeInactiveBindingsForAction( action );\n\n\t\t\t}\n\n\t\t\tdelete actionsByClip[ clipUuid ];\n\n\t\t}\n\n\t}\n\n\t// free all resources specific to a particular root target object\n\tuncacheRoot( root ) {\n\n\t\tconst rootUuid = root.uuid,\n\t\t\tactionsByClip = this._actionsByClip;\n\n\t\tfor ( const clipUuid in actionsByClip ) {\n\n\t\t\tconst actionByRoot = actionsByClip[ clipUuid ].actionByRoot,\n\t\t\t\taction = actionByRoot[ rootUuid ];\n\n\t\t\tif ( action !== undefined ) {\n\n\t\t\t\tthis._deactivateAction( action );\n\t\t\t\tthis._removeInactiveAction( action );\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst bindingsByRoot = this._bindingsByRootAndName,\n\t\t\tbindingByName = bindingsByRoot[ rootUuid ];\n\n\t\tif ( bindingByName !== undefined ) {\n\n\t\t\tfor ( const trackName in bindingByName ) {\n\n\t\t\t\tconst binding = bindingByName[ trackName ];\n\t\t\t\tbinding.restoreOriginalState();\n\t\t\t\tthis._removeInactiveBinding( binding );\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\t// remove a targeted clip from the cache\n\tuncacheAction( clip, optionalRoot ) {\n\n\t\tconst action = this.existingAction( clip, optionalRoot );\n\n\t\tif ( action !== null ) {\n\n\t\t\tthis._deactivateAction( action );\n\t\t\tthis._removeInactiveAction( action );\n\n\t\t}\n\n\t}\n\n}\n\nclass Uniform {\n\n\tconstructor( value ) {\n\n\t\tthis.value = value;\n\n\t}\n\n\tclone() {\n\n\t\treturn new Uniform( this.value.clone === undefined ? this.value : this.value.clone() );\n\n\t}\n\n}\n\nlet _id = 0;\n\nclass UniformsGroup extends EventDispatcher {\n\n\tconstructor() {\n\n\t\tsuper();\n\n\t\tthis.isUniformsGroup = true;\n\n\t\tObject.defineProperty( this, 'id', { value: _id ++ } );\n\n\t\tthis.name = '';\n\n\t\tthis.usage = StaticDrawUsage;\n\t\tthis.uniforms = [];\n\n\t}\n\n\tadd( uniform ) {\n\n\t\tthis.uniforms.push( uniform );\n\n\t\treturn this;\n\n\t}\n\n\tremove( uniform ) {\n\n\t\tconst index = this.uniforms.indexOf( uniform );\n\n\t\tif ( index !== - 1 ) this.uniforms.splice( index, 1 );\n\n\t\treturn this;\n\n\t}\n\n\tsetName( name ) {\n\n\t\tthis.name = name;\n\n\t\treturn this;\n\n\t}\n\n\tsetUsage( value ) {\n\n\t\tthis.usage = value;\n\n\t\treturn this;\n\n\t}\n\n\tdispose() {\n\n\t\tthis.dispatchEvent( { type: 'dispose' } );\n\n\t\treturn this;\n\n\t}\n\n\tcopy( source ) {\n\n\t\tthis.name = source.name;\n\t\tthis.usage = source.usage;\n\n\t\tconst uniformsSource = source.uniforms;\n\n\t\tthis.uniforms.length = 0;\n\n\t\tfor ( let i = 0, l = uniformsSource.length; i < l; i ++ ) {\n\n\t\t\tconst uniforms = Array.isArray( uniformsSource[ i ] ) ? uniformsSource[ i ] : [ uniformsSource[ i ] ];\n\n\t\t\tfor ( let j = 0; j < uniforms.length; j ++ ) {\n\n\t\t\t\tthis.uniforms.push( uniforms[ j ].clone() );\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n}\n\nclass InstancedInterleavedBuffer extends InterleavedBuffer {\n\n\tconstructor( array, stride, meshPerAttribute = 1 ) {\n\n\t\tsuper( array, stride );\n\n\t\tthis.isInstancedInterleavedBuffer = true;\n\n\t\tthis.meshPerAttribute = meshPerAttribute;\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source );\n\n\t\tthis.meshPerAttribute = source.meshPerAttribute;\n\n\t\treturn this;\n\n\t}\n\n\tclone( data ) {\n\n\t\tconst ib = super.clone( data );\n\n\t\tib.meshPerAttribute = this.meshPerAttribute;\n\n\t\treturn ib;\n\n\t}\n\n\ttoJSON( data ) {\n\n\t\tconst json = super.toJSON( data );\n\n\t\tjson.isInstancedInterleavedBuffer = true;\n\t\tjson.meshPerAttribute = this.meshPerAttribute;\n\n\t\treturn json;\n\n\t}\n\n}\n\nclass GLBufferAttribute {\n\n\tconstructor( buffer, type, itemSize, elementSize, count ) {\n\n\t\tthis.isGLBufferAttribute = true;\n\n\t\tthis.name = '';\n\n\t\tthis.buffer = buffer;\n\t\tthis.type = type;\n\t\tthis.itemSize = itemSize;\n\t\tthis.elementSize = elementSize;\n\t\tthis.count = count;\n\n\t\tthis.version = 0;\n\n\t}\n\n\tset needsUpdate( value ) {\n\n\t\tif ( value === true ) this.version ++;\n\n\t}\n\n\tsetBuffer( buffer ) {\n\n\t\tthis.buffer = buffer;\n\n\t\treturn this;\n\n\t}\n\n\tsetType( type, elementSize ) {\n\n\t\tthis.type = type;\n\t\tthis.elementSize = elementSize;\n\n\t\treturn this;\n\n\t}\n\n\tsetItemSize( itemSize ) {\n\n\t\tthis.itemSize = itemSize;\n\n\t\treturn this;\n\n\t}\n\n\tsetCount( count ) {\n\n\t\tthis.count = count;\n\n\t\treturn this;\n\n\t}\n\n}\n\nconst _matrix = /*@__PURE__*/ new Matrix4();\n\nclass Raycaster {\n\n\tconstructor( origin, direction, near = 0, far = Infinity ) {\n\n\t\tthis.ray = new Ray( origin, direction );\n\t\t// direction is assumed to be normalized (for accurate distance calculations)\n\n\t\tthis.near = near;\n\t\tthis.far = far;\n\t\tthis.camera = null;\n\t\tthis.layers = new Layers();\n\n\t\tthis.params = {\n\t\t\tMesh: {},\n\t\t\tLine: { threshold: 1 },\n\t\t\tLOD: {},\n\t\t\tPoints: { threshold: 1 },\n\t\t\tSprite: {}\n\t\t};\n\n\t}\n\n\tset( origin, direction ) {\n\n\t\t// direction is assumed to be normalized (for accurate distance calculations)\n\n\t\tthis.ray.set( origin, direction );\n\n\t}\n\n\tsetFromCamera( coords, camera ) {\n\n\t\tif ( camera.isPerspectiveCamera ) {\n\n\t\t\tthis.ray.origin.setFromMatrixPosition( camera.matrixWorld );\n\t\t\tthis.ray.direction.set( coords.x, coords.y, 0.5 ).unproject( camera ).sub( this.ray.origin ).normalize();\n\t\t\tthis.camera = camera;\n\n\t\t} else if ( camera.isOrthographicCamera ) {\n\n\t\t\tthis.ray.origin.set( coords.x, coords.y, ( camera.near + camera.far ) / ( camera.near - camera.far ) ).unproject( camera ); // set origin in plane of camera\n\t\t\tthis.ray.direction.set( 0, 0, - 1 ).transformDirection( camera.matrixWorld );\n\t\t\tthis.camera = camera;\n\n\t\t} else {\n\n\t\t\tconsole.error( 'THREE.Raycaster: Unsupported camera type: ' + camera.type );\n\n\t\t}\n\n\t}\n\n\tsetFromXRController( controller ) {\n\n\t\t_matrix.identity().extractRotation( controller.matrixWorld );\n\n\t\tthis.ray.origin.setFromMatrixPosition( controller.matrixWorld );\n\t\tthis.ray.direction.set( 0, 0, - 1 ).applyMatrix4( _matrix );\n\n\t\treturn this;\n\n\t}\n\n\tintersectObject( object, recursive = true, intersects = [] ) {\n\n\t\tintersect( object, this, intersects, recursive );\n\n\t\tintersects.sort( ascSort );\n\n\t\treturn intersects;\n\n\t}\n\n\tintersectObjects( objects, recursive = true, intersects = [] ) {\n\n\t\tfor ( let i = 0, l = objects.length; i < l; i ++ ) {\n\n\t\t\tintersect( objects[ i ], this, intersects, recursive );\n\n\t\t}\n\n\t\tintersects.sort( ascSort );\n\n\t\treturn intersects;\n\n\t}\n\n}\n\nfunction ascSort( a, b ) {\n\n\treturn a.distance - b.distance;\n\n}\n\nfunction intersect( object, raycaster, intersects, recursive ) {\n\n\tlet propagate = true;\n\n\tif ( object.layers.test( raycaster.layers ) ) {\n\n\t\tconst result = object.raycast( raycaster, intersects );\n\n\t\tif ( result === false ) propagate = false;\n\n\t}\n\n\tif ( propagate === true && recursive === true ) {\n\n\t\tconst children = object.children;\n\n\t\tfor ( let i = 0, l = children.length; i < l; i ++ ) {\n\n\t\t\tintersect( children[ i ], raycaster, intersects, true );\n\n\t\t}\n\n\t}\n\n}\n\n/**\n * Ref: https://en.wikipedia.org/wiki/Spherical_coordinate_system\n *\n * phi (the polar angle) is measured from the positive y-axis. The positive y-axis is up.\n * theta (the azimuthal angle) is measured from the positive z-axis.\n */\nclass Spherical {\n\n\tconstructor( radius = 1, phi = 0, theta = 0 ) {\n\n\t\tthis.radius = radius;\n\t\tthis.phi = phi; // polar angle\n\t\tthis.theta = theta; // azimuthal angle\n\n\t\treturn this;\n\n\t}\n\n\tset( radius, phi, theta ) {\n\n\t\tthis.radius = radius;\n\t\tthis.phi = phi;\n\t\tthis.theta = theta;\n\n\t\treturn this;\n\n\t}\n\n\tcopy( other ) {\n\n\t\tthis.radius = other.radius;\n\t\tthis.phi = other.phi;\n\t\tthis.theta = other.theta;\n\n\t\treturn this;\n\n\t}\n\n\t// restrict phi to be between EPS and PI-EPS\n\tmakeSafe() {\n\n\t\tconst EPS = 0.000001;\n\t\tthis.phi = Math.max( EPS, Math.min( Math.PI - EPS, this.phi ) );\n\n\t\treturn this;\n\n\t}\n\n\tsetFromVector3( v ) {\n\n\t\treturn this.setFromCartesianCoords( v.x, v.y, v.z );\n\n\t}\n\n\tsetFromCartesianCoords( x, y, z ) {\n\n\t\tthis.radius = Math.sqrt( x * x + y * y + z * z );\n\n\t\tif ( this.radius === 0 ) {\n\n\t\t\tthis.theta = 0;\n\t\t\tthis.phi = 0;\n\n\t\t} else {\n\n\t\t\tthis.theta = Math.atan2( x, z );\n\t\t\tthis.phi = Math.acos( clamp( y / this.radius, - 1, 1 ) );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n}\n\n/**\n * Ref: https://en.wikipedia.org/wiki/Cylindrical_coordinate_system\n */\n\nclass Cylindrical {\n\n\tconstructor( radius = 1, theta = 0, y = 0 ) {\n\n\t\tthis.radius = radius; // distance from the origin to a point in the x-z plane\n\t\tthis.theta = theta; // counterclockwise angle in the x-z plane measured in radians from the positive z-axis\n\t\tthis.y = y; // height above the x-z plane\n\n\t\treturn this;\n\n\t}\n\n\tset( radius, theta, y ) {\n\n\t\tthis.radius = radius;\n\t\tthis.theta = theta;\n\t\tthis.y = y;\n\n\t\treturn this;\n\n\t}\n\n\tcopy( other ) {\n\n\t\tthis.radius = other.radius;\n\t\tthis.theta = other.theta;\n\t\tthis.y = other.y;\n\n\t\treturn this;\n\n\t}\n\n\tsetFromVector3( v ) {\n\n\t\treturn this.setFromCartesianCoords( v.x, v.y, v.z );\n\n\t}\n\n\tsetFromCartesianCoords( x, y, z ) {\n\n\t\tthis.radius = Math.sqrt( x * x + z * z );\n\t\tthis.theta = Math.atan2( x, z );\n\t\tthis.y = y;\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n}\n\nconst _vector$4 = /*@__PURE__*/ new Vector2();\n\nclass Box2 {\n\n\tconstructor( min = new Vector2( + Infinity, + Infinity ), max = new Vector2( - Infinity, - Infinity ) ) {\n\n\t\tthis.isBox2 = true;\n\n\t\tthis.min = min;\n\t\tthis.max = max;\n\n\t}\n\n\tset( min, max ) {\n\n\t\tthis.min.copy( min );\n\t\tthis.max.copy( max );\n\n\t\treturn this;\n\n\t}\n\n\tsetFromPoints( points ) {\n\n\t\tthis.makeEmpty();\n\n\t\tfor ( let i = 0, il = points.length; i < il; i ++ ) {\n\n\t\t\tthis.expandByPoint( points[ i ] );\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tsetFromCenterAndSize( center, size ) {\n\n\t\tconst halfSize = _vector$4.copy( size ).multiplyScalar( 0.5 );\n\t\tthis.min.copy( center ).sub( halfSize );\n\t\tthis.max.copy( center ).add( halfSize );\n\n\t\treturn this;\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n\tcopy( box ) {\n\n\t\tthis.min.copy( box.min );\n\t\tthis.max.copy( box.max );\n\n\t\treturn this;\n\n\t}\n\n\tmakeEmpty() {\n\n\t\tthis.min.x = this.min.y = + Infinity;\n\t\tthis.max.x = this.max.y = - Infinity;\n\n\t\treturn this;\n\n\t}\n\n\tisEmpty() {\n\n\t\t// this is a more robust check for empty than ( volume <= 0 ) because volume can get positive with two negative axes\n\n\t\treturn ( this.max.x < this.min.x ) || ( this.max.y < this.min.y );\n\n\t}\n\n\tgetCenter( target ) {\n\n\t\treturn this.isEmpty() ? target.set( 0, 0 ) : target.addVectors( this.min, this.max ).multiplyScalar( 0.5 );\n\n\t}\n\n\tgetSize( target ) {\n\n\t\treturn this.isEmpty() ? target.set( 0, 0 ) : target.subVectors( this.max, this.min );\n\n\t}\n\n\texpandByPoint( point ) {\n\n\t\tthis.min.min( point );\n\t\tthis.max.max( point );\n\n\t\treturn this;\n\n\t}\n\n\texpandByVector( vector ) {\n\n\t\tthis.min.sub( vector );\n\t\tthis.max.add( vector );\n\n\t\treturn this;\n\n\t}\n\n\texpandByScalar( scalar ) {\n\n\t\tthis.min.addScalar( - scalar );\n\t\tthis.max.addScalar( scalar );\n\n\t\treturn this;\n\n\t}\n\n\tcontainsPoint( point ) {\n\n\t\treturn point.x < this.min.x || point.x > this.max.x ||\n\t\t\tpoint.y < this.min.y || point.y > this.max.y ? false : true;\n\n\t}\n\n\tcontainsBox( box ) {\n\n\t\treturn this.min.x <= box.min.x && box.max.x <= this.max.x &&\n\t\t\tthis.min.y <= box.min.y && box.max.y <= this.max.y;\n\n\t}\n\n\tgetParameter( point, target ) {\n\n\t\t// This can potentially have a divide by zero if the box\n\t\t// has a size dimension of 0.\n\n\t\treturn target.set(\n\t\t\t( point.x - this.min.x ) / ( this.max.x - this.min.x ),\n\t\t\t( point.y - this.min.y ) / ( this.max.y - this.min.y )\n\t\t);\n\n\t}\n\n\tintersectsBox( box ) {\n\n\t\t// using 4 splitting planes to rule out intersections\n\n\t\treturn box.max.x < this.min.x || box.min.x > this.max.x ||\n\t\t\tbox.max.y < this.min.y || box.min.y > this.max.y ? false : true;\n\n\t}\n\n\tclampPoint( point, target ) {\n\n\t\treturn target.copy( point ).clamp( this.min, this.max );\n\n\t}\n\n\tdistanceToPoint( point ) {\n\n\t\treturn this.clampPoint( point, _vector$4 ).distanceTo( point );\n\n\t}\n\n\tintersect( box ) {\n\n\t\tthis.min.max( box.min );\n\t\tthis.max.min( box.max );\n\n\t\tif ( this.isEmpty() ) this.makeEmpty();\n\n\t\treturn this;\n\n\t}\n\n\tunion( box ) {\n\n\t\tthis.min.min( box.min );\n\t\tthis.max.max( box.max );\n\n\t\treturn this;\n\n\t}\n\n\ttranslate( offset ) {\n\n\t\tthis.min.add( offset );\n\t\tthis.max.add( offset );\n\n\t\treturn this;\n\n\t}\n\n\tequals( box ) {\n\n\t\treturn box.min.equals( this.min ) && box.max.equals( this.max );\n\n\t}\n\n}\n\nconst _startP = /*@__PURE__*/ new Vector3();\nconst _startEnd = /*@__PURE__*/ new Vector3();\n\nclass Line3 {\n\n\tconstructor( start = new Vector3(), end = new Vector3() ) {\n\n\t\tthis.start = start;\n\t\tthis.end = end;\n\n\t}\n\n\tset( start, end ) {\n\n\t\tthis.start.copy( start );\n\t\tthis.end.copy( end );\n\n\t\treturn this;\n\n\t}\n\n\tcopy( line ) {\n\n\t\tthis.start.copy( line.start );\n\t\tthis.end.copy( line.end );\n\n\t\treturn this;\n\n\t}\n\n\tgetCenter( target ) {\n\n\t\treturn target.addVectors( this.start, this.end ).multiplyScalar( 0.5 );\n\n\t}\n\n\tdelta( target ) {\n\n\t\treturn target.subVectors( this.end, this.start );\n\n\t}\n\n\tdistanceSq() {\n\n\t\treturn this.start.distanceToSquared( this.end );\n\n\t}\n\n\tdistance() {\n\n\t\treturn this.start.distanceTo( this.end );\n\n\t}\n\n\tat( t, target ) {\n\n\t\treturn this.delta( target ).multiplyScalar( t ).add( this.start );\n\n\t}\n\n\tclosestPointToPointParameter( point, clampToLine ) {\n\n\t\t_startP.subVectors( point, this.start );\n\t\t_startEnd.subVectors( this.end, this.start );\n\n\t\tconst startEnd2 = _startEnd.dot( _startEnd );\n\t\tconst startEnd_startP = _startEnd.dot( _startP );\n\n\t\tlet t = startEnd_startP / startEnd2;\n\n\t\tif ( clampToLine ) {\n\n\t\t\tt = clamp( t, 0, 1 );\n\n\t\t}\n\n\t\treturn t;\n\n\t}\n\n\tclosestPointToPoint( point, clampToLine, target ) {\n\n\t\tconst t = this.closestPointToPointParameter( point, clampToLine );\n\n\t\treturn this.delta( target ).multiplyScalar( t ).add( this.start );\n\n\t}\n\n\tapplyMatrix4( matrix ) {\n\n\t\tthis.start.applyMatrix4( matrix );\n\t\tthis.end.applyMatrix4( matrix );\n\n\t\treturn this;\n\n\t}\n\n\tequals( line ) {\n\n\t\treturn line.start.equals( this.start ) && line.end.equals( this.end );\n\n\t}\n\n\tclone() {\n\n\t\treturn new this.constructor().copy( this );\n\n\t}\n\n}\n\nconst _vector$3 = /*@__PURE__*/ new Vector3();\n\nclass SpotLightHelper extends Object3D {\n\n\tconstructor( light, color ) {\n\n\t\tsuper();\n\n\t\tthis.light = light;\n\n\t\tthis.matrixAutoUpdate = false;\n\n\t\tthis.color = color;\n\n\t\tthis.type = 'SpotLightHelper';\n\n\t\tconst geometry = new BufferGeometry();\n\n\t\tconst positions = [\n\t\t\t0, 0, 0, \t0, 0, 1,\n\t\t\t0, 0, 0, \t1, 0, 1,\n\t\t\t0, 0, 0,\t- 1, 0, 1,\n\t\t\t0, 0, 0, \t0, 1, 1,\n\t\t\t0, 0, 0, \t0, - 1, 1\n\t\t];\n\n\t\tfor ( let i = 0, j = 1, l = 32; i < l; i ++, j ++ ) {\n\n\t\t\tconst p1 = ( i / l ) * Math.PI * 2;\n\t\t\tconst p2 = ( j / l ) * Math.PI * 2;\n\n\t\t\tpositions.push(\n\t\t\t\tMath.cos( p1 ), Math.sin( p1 ), 1,\n\t\t\t\tMath.cos( p2 ), Math.sin( p2 ), 1\n\t\t\t);\n\n\t\t}\n\n\t\tgeometry.setAttribute( 'position', new Float32BufferAttribute( positions, 3 ) );\n\n\t\tconst material = new LineBasicMaterial( { fog: false, toneMapped: false } );\n\n\t\tthis.cone = new LineSegments( geometry, material );\n\t\tthis.add( this.cone );\n\n\t\tthis.update();\n\n\t}\n\n\tdispose() {\n\n\t\tthis.cone.geometry.dispose();\n\t\tthis.cone.material.dispose();\n\n\t}\n\n\tupdate() {\n\n\t\tthis.light.updateWorldMatrix( true, false );\n\t\tthis.light.target.updateWorldMatrix( true, false );\n\n\t\t// update the local matrix based on the parent and light target transforms\n\t\tif ( this.parent ) {\n\n\t\t\tthis.parent.updateWorldMatrix( true );\n\n\t\t\tthis.matrix\n\t\t\t\t.copy( this.parent.matrixWorld )\n\t\t\t\t.invert()\n\t\t\t\t.multiply( this.light.matrixWorld );\n\n\t\t} else {\n\n\t\t\tthis.matrix.copy( this.light.matrixWorld );\n\n\t\t}\n\n\t\tthis.matrixWorld.copy( this.light.matrixWorld );\n\n\t\tconst coneLength = this.light.distance ? this.light.distance : 1000;\n\t\tconst coneWidth = coneLength * Math.tan( this.light.angle );\n\n\t\tthis.cone.scale.set( coneWidth, coneWidth, coneLength );\n\n\t\t_vector$3.setFromMatrixPosition( this.light.target.matrixWorld );\n\n\t\tthis.cone.lookAt( _vector$3 );\n\n\t\tif ( this.color !== undefined ) {\n\n\t\t\tthis.cone.material.color.set( this.color );\n\n\t\t} else {\n\n\t\t\tthis.cone.material.color.copy( this.light.color );\n\n\t\t}\n\n\t}\n\n}\n\nconst _vector$2 = /*@__PURE__*/ new Vector3();\nconst _boneMatrix = /*@__PURE__*/ new Matrix4();\nconst _matrixWorldInv = /*@__PURE__*/ new Matrix4();\n\n\nclass SkeletonHelper extends LineSegments {\n\n\tconstructor( object ) {\n\n\t\tconst bones = getBoneList( object );\n\n\t\tconst geometry = new BufferGeometry();\n\n\t\tconst vertices = [];\n\t\tconst colors = [];\n\n\t\tconst color1 = new Color( 0, 0, 1 );\n\t\tconst color2 = new Color( 0, 1, 0 );\n\n\t\tfor ( let i = 0; i < bones.length; i ++ ) {\n\n\t\t\tconst bone = bones[ i ];\n\n\t\t\tif ( bone.parent && bone.parent.isBone ) {\n\n\t\t\t\tvertices.push( 0, 0, 0 );\n\t\t\t\tvertices.push( 0, 0, 0 );\n\t\t\t\tcolors.push( color1.r, color1.g, color1.b );\n\t\t\t\tcolors.push( color2.r, color2.g, color2.b );\n\n\t\t\t}\n\n\t\t}\n\n\t\tgeometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tgeometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );\n\n\t\tconst material = new LineBasicMaterial( { vertexColors: true, depthTest: false, depthWrite: false, toneMapped: false, transparent: true } );\n\n\t\tsuper( geometry, material );\n\n\t\tthis.isSkeletonHelper = true;\n\n\t\tthis.type = 'SkeletonHelper';\n\n\t\tthis.root = object;\n\t\tthis.bones = bones;\n\n\t\tthis.matrix = object.matrixWorld;\n\t\tthis.matrixAutoUpdate = false;\n\n\t}\n\n\tupdateMatrixWorld( force ) {\n\n\t\tconst bones = this.bones;\n\n\t\tconst geometry = this.geometry;\n\t\tconst position = geometry.getAttribute( 'position' );\n\n\t\t_matrixWorldInv.copy( this.root.matrixWorld ).invert();\n\n\t\tfor ( let i = 0, j = 0; i < bones.length; i ++ ) {\n\n\t\t\tconst bone = bones[ i ];\n\n\t\t\tif ( bone.parent && bone.parent.isBone ) {\n\n\t\t\t\t_boneMatrix.multiplyMatrices( _matrixWorldInv, bone.matrixWorld );\n\t\t\t\t_vector$2.setFromMatrixPosition( _boneMatrix );\n\t\t\t\tposition.setXYZ( j, _vector$2.x, _vector$2.y, _vector$2.z );\n\n\t\t\t\t_boneMatrix.multiplyMatrices( _matrixWorldInv, bone.parent.matrixWorld );\n\t\t\t\t_vector$2.setFromMatrixPosition( _boneMatrix );\n\t\t\t\tposition.setXYZ( j + 1, _vector$2.x, _vector$2.y, _vector$2.z );\n\n\t\t\t\tj += 2;\n\n\t\t\t}\n\n\t\t}\n\n\t\tgeometry.getAttribute( 'position' ).needsUpdate = true;\n\n\t\tsuper.updateMatrixWorld( force );\n\n\t}\n\n\tdispose() {\n\n\t\tthis.geometry.dispose();\n\t\tthis.material.dispose();\n\n\t}\n\n}\n\n\nfunction getBoneList( object ) {\n\n\tconst boneList = [];\n\n\tif ( object.isBone === true ) {\n\n\t\tboneList.push( object );\n\n\t}\n\n\tfor ( let i = 0; i < object.children.length; i ++ ) {\n\n\t\tboneList.push.apply( boneList, getBoneList( object.children[ i ] ) );\n\n\t}\n\n\treturn boneList;\n\n}\n\nclass PointLightHelper extends Mesh {\n\n\tconstructor( light, sphereSize, color ) {\n\n\t\tconst geometry = new SphereGeometry( sphereSize, 4, 2 );\n\t\tconst material = new MeshBasicMaterial( { wireframe: true, fog: false, toneMapped: false } );\n\n\t\tsuper( geometry, material );\n\n\t\tthis.light = light;\n\n\t\tthis.color = color;\n\n\t\tthis.type = 'PointLightHelper';\n\n\t\tthis.matrix = this.light.matrixWorld;\n\t\tthis.matrixAutoUpdate = false;\n\n\t\tthis.update();\n\n\n\t\t/*\n\t// TODO: delete this comment?\n\tconst distanceGeometry = new THREE.IcosahedronGeometry( 1, 2 );\n\tconst distanceMaterial = new THREE.MeshBasicMaterial( { color: hexColor, fog: false, wireframe: true, opacity: 0.1, transparent: true } );\n\n\tthis.lightSphere = new THREE.Mesh( bulbGeometry, bulbMaterial );\n\tthis.lightDistance = new THREE.Mesh( distanceGeometry, distanceMaterial );\n\n\tconst d = light.distance;\n\n\tif ( d === 0.0 ) {\n\n\t\tthis.lightDistance.visible = false;\n\n\t} else {\n\n\t\tthis.lightDistance.scale.set( d, d, d );\n\n\t}\n\n\tthis.add( this.lightDistance );\n\t*/\n\n\t}\n\n\tdispose() {\n\n\t\tthis.geometry.dispose();\n\t\tthis.material.dispose();\n\n\t}\n\n\tupdate() {\n\n\t\tthis.light.updateWorldMatrix( true, false );\n\n\t\tif ( this.color !== undefined ) {\n\n\t\t\tthis.material.color.set( this.color );\n\n\t\t} else {\n\n\t\t\tthis.material.color.copy( this.light.color );\n\n\t\t}\n\n\t\t/*\n\t\tconst d = this.light.distance;\n\n\t\tif ( d === 0.0 ) {\n\n\t\t\tthis.lightDistance.visible = false;\n\n\t\t} else {\n\n\t\t\tthis.lightDistance.visible = true;\n\t\t\tthis.lightDistance.scale.set( d, d, d );\n\n\t\t}\n\t\t*/\n\n\t}\n\n}\n\nconst _vector$1 = /*@__PURE__*/ new Vector3();\nconst _color1 = /*@__PURE__*/ new Color();\nconst _color2 = /*@__PURE__*/ new Color();\n\nclass HemisphereLightHelper extends Object3D {\n\n\tconstructor( light, size, color ) {\n\n\t\tsuper();\n\n\t\tthis.light = light;\n\n\t\tthis.matrix = light.matrixWorld;\n\t\tthis.matrixAutoUpdate = false;\n\n\t\tthis.color = color;\n\n\t\tthis.type = 'HemisphereLightHelper';\n\n\t\tconst geometry = new OctahedronGeometry( size );\n\t\tgeometry.rotateY( Math.PI * 0.5 );\n\n\t\tthis.material = new MeshBasicMaterial( { wireframe: true, fog: false, toneMapped: false } );\n\t\tif ( this.color === undefined ) this.material.vertexColors = true;\n\n\t\tconst position = geometry.getAttribute( 'position' );\n\t\tconst colors = new Float32Array( position.count * 3 );\n\n\t\tgeometry.setAttribute( 'color', new BufferAttribute( colors, 3 ) );\n\n\t\tthis.add( new Mesh( geometry, this.material ) );\n\n\t\tthis.update();\n\n\t}\n\n\tdispose() {\n\n\t\tthis.children[ 0 ].geometry.dispose();\n\t\tthis.children[ 0 ].material.dispose();\n\n\t}\n\n\tupdate() {\n\n\t\tconst mesh = this.children[ 0 ];\n\n\t\tif ( this.color !== undefined ) {\n\n\t\t\tthis.material.color.set( this.color );\n\n\t\t} else {\n\n\t\t\tconst colors = mesh.geometry.getAttribute( 'color' );\n\n\t\t\t_color1.copy( this.light.color );\n\t\t\t_color2.copy( this.light.groundColor );\n\n\t\t\tfor ( let i = 0, l = colors.count; i < l; i ++ ) {\n\n\t\t\t\tconst color = ( i < ( l / 2 ) ) ? _color1 : _color2;\n\n\t\t\t\tcolors.setXYZ( i, color.r, color.g, color.b );\n\n\t\t\t}\n\n\t\t\tcolors.needsUpdate = true;\n\n\t\t}\n\n\t\tthis.light.updateWorldMatrix( true, false );\n\n\t\tmesh.lookAt( _vector$1.setFromMatrixPosition( this.light.matrixWorld ).negate() );\n\n\t}\n\n}\n\nclass GridHelper extends LineSegments {\n\n\tconstructor( size = 10, divisions = 10, color1 = 0x444444, color2 = 0x888888 ) {\n\n\t\tcolor1 = new Color( color1 );\n\t\tcolor2 = new Color( color2 );\n\n\t\tconst center = divisions / 2;\n\t\tconst step = size / divisions;\n\t\tconst halfSize = size / 2;\n\n\t\tconst vertices = [], colors = [];\n\n\t\tfor ( let i = 0, j = 0, k = - halfSize; i <= divisions; i ++, k += step ) {\n\n\t\t\tvertices.push( - halfSize, 0, k, halfSize, 0, k );\n\t\t\tvertices.push( k, 0, - halfSize, k, 0, halfSize );\n\n\t\t\tconst color = i === center ? color1 : color2;\n\n\t\t\tcolor.toArray( colors, j ); j += 3;\n\t\t\tcolor.toArray( colors, j ); j += 3;\n\t\t\tcolor.toArray( colors, j ); j += 3;\n\t\t\tcolor.toArray( colors, j ); j += 3;\n\n\t\t}\n\n\t\tconst geometry = new BufferGeometry();\n\t\tgeometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tgeometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );\n\n\t\tconst material = new LineBasicMaterial( { vertexColors: true, toneMapped: false } );\n\n\t\tsuper( geometry, material );\n\n\t\tthis.type = 'GridHelper';\n\n\t}\n\n\tdispose() {\n\n\t\tthis.geometry.dispose();\n\t\tthis.material.dispose();\n\n\t}\n\n}\n\nclass PolarGridHelper extends LineSegments {\n\n\tconstructor( radius = 10, sectors = 16, rings = 8, divisions = 64, color1 = 0x444444, color2 = 0x888888 ) {\n\n\t\tcolor1 = new Color( color1 );\n\t\tcolor2 = new Color( color2 );\n\n\t\tconst vertices = [];\n\t\tconst colors = [];\n\n\t\t// create the sectors\n\n\t\tif ( sectors > 1 ) {\n\n\t\t\tfor ( let i = 0; i < sectors; i ++ ) {\n\n\t\t\t\tconst v = ( i / sectors ) * ( Math.PI * 2 );\n\n\t\t\t\tconst x = Math.sin( v ) * radius;\n\t\t\t\tconst z = Math.cos( v ) * radius;\n\n\t\t\t\tvertices.push( 0, 0, 0 );\n\t\t\t\tvertices.push( x, 0, z );\n\n\t\t\t\tconst color = ( i & 1 ) ? color1 : color2;\n\n\t\t\t\tcolors.push( color.r, color.g, color.b );\n\t\t\t\tcolors.push( color.r, color.g, color.b );\n\n\t\t\t}\n\n\t\t}\n\n\t\t// create the rings\n\n\t\tfor ( let i = 0; i < rings; i ++ ) {\n\n\t\t\tconst color = ( i & 1 ) ? color1 : color2;\n\n\t\t\tconst r = radius - ( radius / rings * i );\n\n\t\t\tfor ( let j = 0; j < divisions; j ++ ) {\n\n\t\t\t\t// first vertex\n\n\t\t\t\tlet v = ( j / divisions ) * ( Math.PI * 2 );\n\n\t\t\t\tlet x = Math.sin( v ) * r;\n\t\t\t\tlet z = Math.cos( v ) * r;\n\n\t\t\t\tvertices.push( x, 0, z );\n\t\t\t\tcolors.push( color.r, color.g, color.b );\n\n\t\t\t\t// second vertex\n\n\t\t\t\tv = ( ( j + 1 ) / divisions ) * ( Math.PI * 2 );\n\n\t\t\t\tx = Math.sin( v ) * r;\n\t\t\t\tz = Math.cos( v ) * r;\n\n\t\t\t\tvertices.push( x, 0, z );\n\t\t\t\tcolors.push( color.r, color.g, color.b );\n\n\t\t\t}\n\n\t\t}\n\n\t\tconst geometry = new BufferGeometry();\n\t\tgeometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tgeometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );\n\n\t\tconst material = new LineBasicMaterial( { vertexColors: true, toneMapped: false } );\n\n\t\tsuper( geometry, material );\n\n\t\tthis.type = 'PolarGridHelper';\n\n\t}\n\n\tdispose() {\n\n\t\tthis.geometry.dispose();\n\t\tthis.material.dispose();\n\n\t}\n\n}\n\nconst _v1 = /*@__PURE__*/ new Vector3();\nconst _v2 = /*@__PURE__*/ new Vector3();\nconst _v3 = /*@__PURE__*/ new Vector3();\n\nclass DirectionalLightHelper extends Object3D {\n\n\tconstructor( light, size, color ) {\n\n\t\tsuper();\n\n\t\tthis.light = light;\n\n\t\tthis.matrix = light.matrixWorld;\n\t\tthis.matrixAutoUpdate = false;\n\n\t\tthis.color = color;\n\n\t\tthis.type = 'DirectionalLightHelper';\n\n\t\tif ( size === undefined ) size = 1;\n\n\t\tlet geometry = new BufferGeometry();\n\t\tgeometry.setAttribute( 'position', new Float32BufferAttribute( [\n\t\t\t- size, size, 0,\n\t\t\tsize, size, 0,\n\t\t\tsize, - size, 0,\n\t\t\t- size, - size, 0,\n\t\t\t- size, size, 0\n\t\t], 3 ) );\n\n\t\tconst material = new LineBasicMaterial( { fog: false, toneMapped: false } );\n\n\t\tthis.lightPlane = new Line( geometry, material );\n\t\tthis.add( this.lightPlane );\n\n\t\tgeometry = new BufferGeometry();\n\t\tgeometry.setAttribute( 'position', new Float32BufferAttribute( [ 0, 0, 0, 0, 0, 1 ], 3 ) );\n\n\t\tthis.targetLine = new Line( geometry, material );\n\t\tthis.add( this.targetLine );\n\n\t\tthis.update();\n\n\t}\n\n\tdispose() {\n\n\t\tthis.lightPlane.geometry.dispose();\n\t\tthis.lightPlane.material.dispose();\n\t\tthis.targetLine.geometry.dispose();\n\t\tthis.targetLine.material.dispose();\n\n\t}\n\n\tupdate() {\n\n\t\tthis.light.updateWorldMatrix( true, false );\n\t\tthis.light.target.updateWorldMatrix( true, false );\n\n\t\t_v1.setFromMatrixPosition( this.light.matrixWorld );\n\t\t_v2.setFromMatrixPosition( this.light.target.matrixWorld );\n\t\t_v3.subVectors( _v2, _v1 );\n\n\t\tthis.lightPlane.lookAt( _v2 );\n\n\t\tif ( this.color !== undefined ) {\n\n\t\t\tthis.lightPlane.material.color.set( this.color );\n\t\t\tthis.targetLine.material.color.set( this.color );\n\n\t\t} else {\n\n\t\t\tthis.lightPlane.material.color.copy( this.light.color );\n\t\t\tthis.targetLine.material.color.copy( this.light.color );\n\n\t\t}\n\n\t\tthis.targetLine.lookAt( _v2 );\n\t\tthis.targetLine.scale.z = _v3.length();\n\n\t}\n\n}\n\nconst _vector = /*@__PURE__*/ new Vector3();\nconst _camera = /*@__PURE__*/ new Camera();\n\n/**\n *\t- shows frustum, line of sight and up of the camera\n *\t- suitable for fast updates\n * \t- based on frustum visualization in lightgl.js shadowmap example\n *\t\thttps://github.com/evanw/lightgl.js/blob/master/tests/shadowmap.html\n */\n\nclass CameraHelper extends LineSegments {\n\n\tconstructor( camera ) {\n\n\t\tconst geometry = new BufferGeometry();\n\t\tconst material = new LineBasicMaterial( { color: 0xffffff, vertexColors: true, toneMapped: false } );\n\n\t\tconst vertices = [];\n\t\tconst colors = [];\n\n\t\tconst pointMap = {};\n\n\t\t// near\n\n\t\taddLine( 'n1', 'n2' );\n\t\taddLine( 'n2', 'n4' );\n\t\taddLine( 'n4', 'n3' );\n\t\taddLine( 'n3', 'n1' );\n\n\t\t// far\n\n\t\taddLine( 'f1', 'f2' );\n\t\taddLine( 'f2', 'f4' );\n\t\taddLine( 'f4', 'f3' );\n\t\taddLine( 'f3', 'f1' );\n\n\t\t// sides\n\n\t\taddLine( 'n1', 'f1' );\n\t\taddLine( 'n2', 'f2' );\n\t\taddLine( 'n3', 'f3' );\n\t\taddLine( 'n4', 'f4' );\n\n\t\t// cone\n\n\t\taddLine( 'p', 'n1' );\n\t\taddLine( 'p', 'n2' );\n\t\taddLine( 'p', 'n3' );\n\t\taddLine( 'p', 'n4' );\n\n\t\t// up\n\n\t\taddLine( 'u1', 'u2' );\n\t\taddLine( 'u2', 'u3' );\n\t\taddLine( 'u3', 'u1' );\n\n\t\t// target\n\n\t\taddLine( 'c', 't' );\n\t\taddLine( 'p', 'c' );\n\n\t\t// cross\n\n\t\taddLine( 'cn1', 'cn2' );\n\t\taddLine( 'cn3', 'cn4' );\n\n\t\taddLine( 'cf1', 'cf2' );\n\t\taddLine( 'cf3', 'cf4' );\n\n\t\tfunction addLine( a, b ) {\n\n\t\t\taddPoint( a );\n\t\t\taddPoint( b );\n\n\t\t}\n\n\t\tfunction addPoint( id ) {\n\n\t\t\tvertices.push( 0, 0, 0 );\n\t\t\tcolors.push( 0, 0, 0 );\n\n\t\t\tif ( pointMap[ id ] === undefined ) {\n\n\t\t\t\tpointMap[ id ] = [];\n\n\t\t\t}\n\n\t\t\tpointMap[ id ].push( ( vertices.length / 3 ) - 1 );\n\n\t\t}\n\n\t\tgeometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tgeometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );\n\n\t\tsuper( geometry, material );\n\n\t\tthis.type = 'CameraHelper';\n\n\t\tthis.camera = camera;\n\t\tif ( this.camera.updateProjectionMatrix ) this.camera.updateProjectionMatrix();\n\n\t\tthis.matrix = camera.matrixWorld;\n\t\tthis.matrixAutoUpdate = false;\n\n\t\tthis.pointMap = pointMap;\n\n\t\tthis.update();\n\n\t\t// colors\n\n\t\tconst colorFrustum = new Color( 0xffaa00 );\n\t\tconst colorCone = new Color( 0xff0000 );\n\t\tconst colorUp = new Color( 0x00aaff );\n\t\tconst colorTarget = new Color( 0xffffff );\n\t\tconst colorCross = new Color( 0x333333 );\n\n\t\tthis.setColors( colorFrustum, colorCone, colorUp, colorTarget, colorCross );\n\n\t}\n\n\tsetColors( frustum, cone, up, target, cross ) {\n\n\t\tconst geometry = this.geometry;\n\n\t\tconst colorAttribute = geometry.getAttribute( 'color' );\n\n\t\t// near\n\n\t\tcolorAttribute.setXYZ( 0, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 1, frustum.r, frustum.g, frustum.b ); // n1, n2\n\t\tcolorAttribute.setXYZ( 2, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 3, frustum.r, frustum.g, frustum.b ); // n2, n4\n\t\tcolorAttribute.setXYZ( 4, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 5, frustum.r, frustum.g, frustum.b ); // n4, n3\n\t\tcolorAttribute.setXYZ( 6, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 7, frustum.r, frustum.g, frustum.b ); // n3, n1\n\n\t\t// far\n\n\t\tcolorAttribute.setXYZ( 8, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 9, frustum.r, frustum.g, frustum.b ); // f1, f2\n\t\tcolorAttribute.setXYZ( 10, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 11, frustum.r, frustum.g, frustum.b ); // f2, f4\n\t\tcolorAttribute.setXYZ( 12, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 13, frustum.r, frustum.g, frustum.b ); // f4, f3\n\t\tcolorAttribute.setXYZ( 14, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 15, frustum.r, frustum.g, frustum.b ); // f3, f1\n\n\t\t// sides\n\n\t\tcolorAttribute.setXYZ( 16, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 17, frustum.r, frustum.g, frustum.b ); // n1, f1\n\t\tcolorAttribute.setXYZ( 18, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 19, frustum.r, frustum.g, frustum.b ); // n2, f2\n\t\tcolorAttribute.setXYZ( 20, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 21, frustum.r, frustum.g, frustum.b ); // n3, f3\n\t\tcolorAttribute.setXYZ( 22, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 23, frustum.r, frustum.g, frustum.b ); // n4, f4\n\n\t\t// cone\n\n\t\tcolorAttribute.setXYZ( 24, cone.r, cone.g, cone.b ); colorAttribute.setXYZ( 25, cone.r, cone.g, cone.b ); // p, n1\n\t\tcolorAttribute.setXYZ( 26, cone.r, cone.g, cone.b ); colorAttribute.setXYZ( 27, cone.r, cone.g, cone.b ); // p, n2\n\t\tcolorAttribute.setXYZ( 28, cone.r, cone.g, cone.b ); colorAttribute.setXYZ( 29, cone.r, cone.g, cone.b ); // p, n3\n\t\tcolorAttribute.setXYZ( 30, cone.r, cone.g, cone.b ); colorAttribute.setXYZ( 31, cone.r, cone.g, cone.b ); // p, n4\n\n\t\t// up\n\n\t\tcolorAttribute.setXYZ( 32, up.r, up.g, up.b ); colorAttribute.setXYZ( 33, up.r, up.g, up.b ); // u1, u2\n\t\tcolorAttribute.setXYZ( 34, up.r, up.g, up.b ); colorAttribute.setXYZ( 35, up.r, up.g, up.b ); // u2, u3\n\t\tcolorAttribute.setXYZ( 36, up.r, up.g, up.b ); colorAttribute.setXYZ( 37, up.r, up.g, up.b ); // u3, u1\n\n\t\t// target\n\n\t\tcolorAttribute.setXYZ( 38, target.r, target.g, target.b ); colorAttribute.setXYZ( 39, target.r, target.g, target.b ); // c, t\n\t\tcolorAttribute.setXYZ( 40, cross.r, cross.g, cross.b ); colorAttribute.setXYZ( 41, cross.r, cross.g, cross.b ); // p, c\n\n\t\t// cross\n\n\t\tcolorAttribute.setXYZ( 42, cross.r, cross.g, cross.b ); colorAttribute.setXYZ( 43, cross.r, cross.g, cross.b ); // cn1, cn2\n\t\tcolorAttribute.setXYZ( 44, cross.r, cross.g, cross.b ); colorAttribute.setXYZ( 45, cross.r, cross.g, cross.b ); // cn3, cn4\n\n\t\tcolorAttribute.setXYZ( 46, cross.r, cross.g, cross.b ); colorAttribute.setXYZ( 47, cross.r, cross.g, cross.b ); // cf1, cf2\n\t\tcolorAttribute.setXYZ( 48, cross.r, cross.g, cross.b ); colorAttribute.setXYZ( 49, cross.r, cross.g, cross.b ); // cf3, cf4\n\n\t\tcolorAttribute.needsUpdate = true;\n\n\t}\n\n\tupdate() {\n\n\t\tconst geometry = this.geometry;\n\t\tconst pointMap = this.pointMap;\n\n\t\tconst w = 1, h = 1;\n\n\t\t// we need just camera projection matrix inverse\n\t\t// world matrix must be identity\n\n\t\t_camera.projectionMatrixInverse.copy( this.camera.projectionMatrixInverse );\n\n\t\t// center / target\n\n\t\tsetPoint( 'c', pointMap, geometry, _camera, 0, 0, - 1 );\n\t\tsetPoint( 't', pointMap, geometry, _camera, 0, 0, 1 );\n\n\t\t// near\n\n\t\tsetPoint( 'n1', pointMap, geometry, _camera, - w, - h, - 1 );\n\t\tsetPoint( 'n2', pointMap, geometry, _camera, w, - h, - 1 );\n\t\tsetPoint( 'n3', pointMap, geometry, _camera, - w, h, - 1 );\n\t\tsetPoint( 'n4', pointMap, geometry, _camera, w, h, - 1 );\n\n\t\t// far\n\n\t\tsetPoint( 'f1', pointMap, geometry, _camera, - w, - h, 1 );\n\t\tsetPoint( 'f2', pointMap, geometry, _camera, w, - h, 1 );\n\t\tsetPoint( 'f3', pointMap, geometry, _camera, - w, h, 1 );\n\t\tsetPoint( 'f4', pointMap, geometry, _camera, w, h, 1 );\n\n\t\t// up\n\n\t\tsetPoint( 'u1', pointMap, geometry, _camera, w * 0.7, h * 1.1, - 1 );\n\t\tsetPoint( 'u2', pointMap, geometry, _camera, - w * 0.7, h * 1.1, - 1 );\n\t\tsetPoint( 'u3', pointMap, geometry, _camera, 0, h * 2, - 1 );\n\n\t\t// cross\n\n\t\tsetPoint( 'cf1', pointMap, geometry, _camera, - w, 0, 1 );\n\t\tsetPoint( 'cf2', pointMap, geometry, _camera, w, 0, 1 );\n\t\tsetPoint( 'cf3', pointMap, geometry, _camera, 0, - h, 1 );\n\t\tsetPoint( 'cf4', pointMap, geometry, _camera, 0, h, 1 );\n\n\t\tsetPoint( 'cn1', pointMap, geometry, _camera, - w, 0, - 1 );\n\t\tsetPoint( 'cn2', pointMap, geometry, _camera, w, 0, - 1 );\n\t\tsetPoint( 'cn3', pointMap, geometry, _camera, 0, - h, - 1 );\n\t\tsetPoint( 'cn4', pointMap, geometry, _camera, 0, h, - 1 );\n\n\t\tgeometry.getAttribute( 'position' ).needsUpdate = true;\n\n\t}\n\n\tdispose() {\n\n\t\tthis.geometry.dispose();\n\t\tthis.material.dispose();\n\n\t}\n\n}\n\n\nfunction setPoint( point, pointMap, geometry, camera, x, y, z ) {\n\n\t_vector.set( x, y, z ).unproject( camera );\n\n\tconst points = pointMap[ point ];\n\n\tif ( points !== undefined ) {\n\n\t\tconst position = geometry.getAttribute( 'position' );\n\n\t\tfor ( let i = 0, l = points.length; i < l; i ++ ) {\n\n\t\t\tposition.setXYZ( points[ i ], _vector.x, _vector.y, _vector.z );\n\n\t\t}\n\n\t}\n\n}\n\nconst _box = /*@__PURE__*/ new Box3();\n\nclass BoxHelper extends LineSegments {\n\n\tconstructor( object, color = 0xffff00 ) {\n\n\t\tconst indices = new Uint16Array( [ 0, 1, 1, 2, 2, 3, 3, 0, 4, 5, 5, 6, 6, 7, 7, 4, 0, 4, 1, 5, 2, 6, 3, 7 ] );\n\t\tconst positions = new Float32Array( 8 * 3 );\n\n\t\tconst geometry = new BufferGeometry();\n\t\tgeometry.setIndex( new BufferAttribute( indices, 1 ) );\n\t\tgeometry.setAttribute( 'position', new BufferAttribute( positions, 3 ) );\n\n\t\tsuper( geometry, new LineBasicMaterial( { color: color, toneMapped: false } ) );\n\n\t\tthis.object = object;\n\t\tthis.type = 'BoxHelper';\n\n\t\tthis.matrixAutoUpdate = false;\n\n\t\tthis.update();\n\n\t}\n\n\tupdate( object ) {\n\n\t\tif ( object !== undefined ) {\n\n\t\t\tconsole.warn( 'THREE.BoxHelper: .update() has no longer arguments.' );\n\n\t\t}\n\n\t\tif ( this.object !== undefined ) {\n\n\t\t\t_box.setFromObject( this.object );\n\n\t\t}\n\n\t\tif ( _box.isEmpty() ) return;\n\n\t\tconst min = _box.min;\n\t\tconst max = _box.max;\n\n\t\t/*\n\t\t\t5____4\n\t\t1/___0/|\n\t\t| 6__|_7\n\t\t2/___3/\n\n\t\t0: max.x, max.y, max.z\n\t\t1: min.x, max.y, max.z\n\t\t2: min.x, min.y, max.z\n\t\t3: max.x, min.y, max.z\n\t\t4: max.x, max.y, min.z\n\t\t5: min.x, max.y, min.z\n\t\t6: min.x, min.y, min.z\n\t\t7: max.x, min.y, min.z\n\t\t*/\n\n\t\tconst position = this.geometry.attributes.position;\n\t\tconst array = position.array;\n\n\t\tarray[ 0 ] = max.x; array[ 1 ] = max.y; array[ 2 ] = max.z;\n\t\tarray[ 3 ] = min.x; array[ 4 ] = max.y; array[ 5 ] = max.z;\n\t\tarray[ 6 ] = min.x; array[ 7 ] = min.y; array[ 8 ] = max.z;\n\t\tarray[ 9 ] = max.x; array[ 10 ] = min.y; array[ 11 ] = max.z;\n\t\tarray[ 12 ] = max.x; array[ 13 ] = max.y; array[ 14 ] = min.z;\n\t\tarray[ 15 ] = min.x; array[ 16 ] = max.y; array[ 17 ] = min.z;\n\t\tarray[ 18 ] = min.x; array[ 19 ] = min.y; array[ 20 ] = min.z;\n\t\tarray[ 21 ] = max.x; array[ 22 ] = min.y; array[ 23 ] = min.z;\n\n\t\tposition.needsUpdate = true;\n\n\t\tthis.geometry.computeBoundingSphere();\n\n\t}\n\n\tsetFromObject( object ) {\n\n\t\tthis.object = object;\n\t\tthis.update();\n\n\t\treturn this;\n\n\t}\n\n\tcopy( source, recursive ) {\n\n\t\tsuper.copy( source, recursive );\n\n\t\tthis.object = source.object;\n\n\t\treturn this;\n\n\t}\n\n\tdispose() {\n\n\t\tthis.geometry.dispose();\n\t\tthis.material.dispose();\n\n\t}\n\n}\n\nclass Box3Helper extends LineSegments {\n\n\tconstructor( box, color = 0xffff00 ) {\n\n\t\tconst indices = new Uint16Array( [ 0, 1, 1, 2, 2, 3, 3, 0, 4, 5, 5, 6, 6, 7, 7, 4, 0, 4, 1, 5, 2, 6, 3, 7 ] );\n\n\t\tconst positions = [ 1, 1, 1, - 1, 1, 1, - 1, - 1, 1, 1, - 1, 1, 1, 1, - 1, - 1, 1, - 1, - 1, - 1, - 1, 1, - 1, - 1 ];\n\n\t\tconst geometry = new BufferGeometry();\n\n\t\tgeometry.setIndex( new BufferAttribute( indices, 1 ) );\n\n\t\tgeometry.setAttribute( 'position', new Float32BufferAttribute( positions, 3 ) );\n\n\t\tsuper( geometry, new LineBasicMaterial( { color: color, toneMapped: false } ) );\n\n\t\tthis.box = box;\n\n\t\tthis.type = 'Box3Helper';\n\n\t\tthis.geometry.computeBoundingSphere();\n\n\t}\n\n\tupdateMatrixWorld( force ) {\n\n\t\tconst box = this.box;\n\n\t\tif ( box.isEmpty() ) return;\n\n\t\tbox.getCenter( this.position );\n\n\t\tbox.getSize( this.scale );\n\n\t\tthis.scale.multiplyScalar( 0.5 );\n\n\t\tsuper.updateMatrixWorld( force );\n\n\t}\n\n\tdispose() {\n\n\t\tthis.geometry.dispose();\n\t\tthis.material.dispose();\n\n\t}\n\n}\n\nclass PlaneHelper extends Line {\n\n\tconstructor( plane, size = 1, hex = 0xffff00 ) {\n\n\t\tconst color = hex;\n\n\t\tconst positions = [ 1, - 1, 0, - 1, 1, 0, - 1, - 1, 0, 1, 1, 0, - 1, 1, 0, - 1, - 1, 0, 1, - 1, 0, 1, 1, 0 ];\n\n\t\tconst geometry = new BufferGeometry();\n\t\tgeometry.setAttribute( 'position', new Float32BufferAttribute( positions, 3 ) );\n\t\tgeometry.computeBoundingSphere();\n\n\t\tsuper( geometry, new LineBasicMaterial( { color: color, toneMapped: false } ) );\n\n\t\tthis.type = 'PlaneHelper';\n\n\t\tthis.plane = plane;\n\n\t\tthis.size = size;\n\n\t\tconst positions2 = [ 1, 1, 0, - 1, 1, 0, - 1, - 1, 0, 1, 1, 0, - 1, - 1, 0, 1, - 1, 0 ];\n\n\t\tconst geometry2 = new BufferGeometry();\n\t\tgeometry2.setAttribute( 'position', new Float32BufferAttribute( positions2, 3 ) );\n\t\tgeometry2.computeBoundingSphere();\n\n\t\tthis.add( new Mesh( geometry2, new MeshBasicMaterial( { color: color, opacity: 0.2, transparent: true, depthWrite: false, toneMapped: false } ) ) );\n\n\t}\n\n\tupdateMatrixWorld( force ) {\n\n\t\tthis.position.set( 0, 0, 0 );\n\n\t\tthis.scale.set( 0.5 * this.size, 0.5 * this.size, 1 );\n\n\t\tthis.lookAt( this.plane.normal );\n\n\t\tthis.translateZ( - this.plane.constant );\n\n\t\tsuper.updateMatrixWorld( force );\n\n\t}\n\n\tdispose() {\n\n\t\tthis.geometry.dispose();\n\t\tthis.material.dispose();\n\t\tthis.children[ 0 ].geometry.dispose();\n\t\tthis.children[ 0 ].material.dispose();\n\n\t}\n\n}\n\nconst _axis = /*@__PURE__*/ new Vector3();\nlet _lineGeometry, _coneGeometry;\n\nclass ArrowHelper extends Object3D {\n\n\t// dir is assumed to be normalized\n\n\tconstructor( dir = new Vector3( 0, 0, 1 ), origin = new Vector3( 0, 0, 0 ), length = 1, color = 0xffff00, headLength = length * 0.2, headWidth = headLength * 0.2 ) {\n\n\t\tsuper();\n\n\t\tthis.type = 'ArrowHelper';\n\n\t\tif ( _lineGeometry === undefined ) {\n\n\t\t\t_lineGeometry = new BufferGeometry();\n\t\t\t_lineGeometry.setAttribute( 'position', new Float32BufferAttribute( [ 0, 0, 0, 0, 1, 0 ], 3 ) );\n\n\t\t\t_coneGeometry = new CylinderGeometry( 0, 0.5, 1, 5, 1 );\n\t\t\t_coneGeometry.translate( 0, - 0.5, 0 );\n\n\t\t}\n\n\t\tthis.position.copy( origin );\n\n\t\tthis.line = new Line( _lineGeometry, new LineBasicMaterial( { color: color, toneMapped: false } ) );\n\t\tthis.line.matrixAutoUpdate = false;\n\t\tthis.add( this.line );\n\n\t\tthis.cone = new Mesh( _coneGeometry, new MeshBasicMaterial( { color: color, toneMapped: false } ) );\n\t\tthis.cone.matrixAutoUpdate = false;\n\t\tthis.add( this.cone );\n\n\t\tthis.setDirection( dir );\n\t\tthis.setLength( length, headLength, headWidth );\n\n\t}\n\n\tsetDirection( dir ) {\n\n\t\t// dir is assumed to be normalized\n\n\t\tif ( dir.y > 0.99999 ) {\n\n\t\t\tthis.quaternion.set( 0, 0, 0, 1 );\n\n\t\t} else if ( dir.y < - 0.99999 ) {\n\n\t\t\tthis.quaternion.set( 1, 0, 0, 0 );\n\n\t\t} else {\n\n\t\t\t_axis.set( dir.z, 0, - dir.x ).normalize();\n\n\t\t\tconst radians = Math.acos( dir.y );\n\n\t\t\tthis.quaternion.setFromAxisAngle( _axis, radians );\n\n\t\t}\n\n\t}\n\n\tsetLength( length, headLength = length * 0.2, headWidth = headLength * 0.2 ) {\n\n\t\tthis.line.scale.set( 1, Math.max( 0.0001, length - headLength ), 1 ); // see #17458\n\t\tthis.line.updateMatrix();\n\n\t\tthis.cone.scale.set( headWidth, headLength, headWidth );\n\t\tthis.cone.position.y = length;\n\t\tthis.cone.updateMatrix();\n\n\t}\n\n\tsetColor( color ) {\n\n\t\tthis.line.material.color.set( color );\n\t\tthis.cone.material.color.set( color );\n\n\t}\n\n\tcopy( source ) {\n\n\t\tsuper.copy( source, false );\n\n\t\tthis.line.copy( source.line );\n\t\tthis.cone.copy( source.cone );\n\n\t\treturn this;\n\n\t}\n\n\tdispose() {\n\n\t\tthis.line.geometry.dispose();\n\t\tthis.line.material.dispose();\n\t\tthis.cone.geometry.dispose();\n\t\tthis.cone.material.dispose();\n\n\t}\n\n}\n\nclass AxesHelper extends LineSegments {\n\n\tconstructor( size = 1 ) {\n\n\t\tconst vertices = [\n\t\t\t0, 0, 0,\tsize, 0, 0,\n\t\t\t0, 0, 0,\t0, size, 0,\n\t\t\t0, 0, 0,\t0, 0, size\n\t\t];\n\n\t\tconst colors = [\n\t\t\t1, 0, 0,\t1, 0.6, 0,\n\t\t\t0, 1, 0,\t0.6, 1, 0,\n\t\t\t0, 0, 1,\t0, 0.6, 1\n\t\t];\n\n\t\tconst geometry = new BufferGeometry();\n\t\tgeometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );\n\t\tgeometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );\n\n\t\tconst material = new LineBasicMaterial( { vertexColors: true, toneMapped: false } );\n\n\t\tsuper( geometry, material );\n\n\t\tthis.type = 'AxesHelper';\n\n\t}\n\n\tsetColors( xAxisColor, yAxisColor, zAxisColor ) {\n\n\t\tconst color = new Color();\n\t\tconst array = this.geometry.attributes.color.array;\n\n\t\tcolor.set( xAxisColor );\n\t\tcolor.toArray( array, 0 );\n\t\tcolor.toArray( array, 3 );\n\n\t\tcolor.set( yAxisColor );\n\t\tcolor.toArray( array, 6 );\n\t\tcolor.toArray( array, 9 );\n\n\t\tcolor.set( zAxisColor );\n\t\tcolor.toArray( array, 12 );\n\t\tcolor.toArray( array, 15 );\n\n\t\tthis.geometry.attributes.color.needsUpdate = true;\n\n\t\treturn this;\n\n\t}\n\n\tdispose() {\n\n\t\tthis.geometry.dispose();\n\t\tthis.material.dispose();\n\n\t}\n\n}\n\nclass ShapePath {\n\n\tconstructor() {\n\n\t\tthis.type = 'ShapePath';\n\n\t\tthis.color = new Color();\n\n\t\tthis.subPaths = [];\n\t\tthis.currentPath = null;\n\n\t}\n\n\tmoveTo( x, y ) {\n\n\t\tthis.currentPath = new Path();\n\t\tthis.subPaths.push( this.currentPath );\n\t\tthis.currentPath.moveTo( x, y );\n\n\t\treturn this;\n\n\t}\n\n\tlineTo( x, y ) {\n\n\t\tthis.currentPath.lineTo( x, y );\n\n\t\treturn this;\n\n\t}\n\n\tquadraticCurveTo( aCPx, aCPy, aX, aY ) {\n\n\t\tthis.currentPath.quadraticCurveTo( aCPx, aCPy, aX, aY );\n\n\t\treturn this;\n\n\t}\n\n\tbezierCurveTo( aCP1x, aCP1y, aCP2x, aCP2y, aX, aY ) {\n\n\t\tthis.currentPath.bezierCurveTo( aCP1x, aCP1y, aCP2x, aCP2y, aX, aY );\n\n\t\treturn this;\n\n\t}\n\n\tsplineThru( pts ) {\n\n\t\tthis.currentPath.splineThru( pts );\n\n\t\treturn this;\n\n\t}\n\n\ttoShapes( isCCW ) {\n\n\t\tfunction toShapesNoHoles( inSubpaths ) {\n\n\t\t\tconst shapes = [];\n\n\t\t\tfor ( let i = 0, l = inSubpaths.length; i < l; i ++ ) {\n\n\t\t\t\tconst tmpPath = inSubpaths[ i ];\n\n\t\t\t\tconst tmpShape = new Shape();\n\t\t\t\ttmpShape.curves = tmpPath.curves;\n\n\t\t\t\tshapes.push( tmpShape );\n\n\t\t\t}\n\n\t\t\treturn shapes;\n\n\t\t}\n\n\t\tfunction isPointInsidePolygon( inPt, inPolygon ) {\n\n\t\t\tconst polyLen = inPolygon.length;\n\n\t\t\t// inPt on polygon contour => immediate success or\n\t\t\t// toggling of inside/outside at every single! intersection point of an edge\n\t\t\t// with the horizontal line through inPt, left of inPt\n\t\t\t// not counting lowerY endpoints of edges and whole edges on that line\n\t\t\tlet inside = false;\n\t\t\tfor ( let p = polyLen - 1, q = 0; q < polyLen; p = q ++ ) {\n\n\t\t\t\tlet edgeLowPt = inPolygon[ p ];\n\t\t\t\tlet edgeHighPt = inPolygon[ q ];\n\n\t\t\t\tlet edgeDx = edgeHighPt.x - edgeLowPt.x;\n\t\t\t\tlet edgeDy = edgeHighPt.y - edgeLowPt.y;\n\n\t\t\t\tif ( Math.abs( edgeDy ) > Number.EPSILON ) {\n\n\t\t\t\t\t// not parallel\n\t\t\t\t\tif ( edgeDy < 0 ) {\n\n\t\t\t\t\t\tedgeLowPt = inPolygon[ q ]; edgeDx = - edgeDx;\n\t\t\t\t\t\tedgeHighPt = inPolygon[ p ]; edgeDy = - edgeDy;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( ( inPt.y < edgeLowPt.y ) || ( inPt.y > edgeHighPt.y ) ) \t\tcontinue;\n\n\t\t\t\t\tif ( inPt.y === edgeLowPt.y ) {\n\n\t\t\t\t\t\tif ( inPt.x === edgeLowPt.x )\t\treturn\ttrue;\t\t// inPt is on contour ?\n\t\t\t\t\t\t// continue;\t\t\t\t// no intersection or edgeLowPt => doesn't count !!!\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tconst perpEdge = edgeDy * ( inPt.x - edgeLowPt.x ) - edgeDx * ( inPt.y - edgeLowPt.y );\n\t\t\t\t\t\tif ( perpEdge === 0 )\t\t\t\treturn\ttrue;\t\t// inPt is on contour ?\n\t\t\t\t\t\tif ( perpEdge < 0 ) \t\t\t\tcontinue;\n\t\t\t\t\t\tinside = ! inside;\t\t// true intersection left of inPt\n\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// parallel or collinear\n\t\t\t\t\tif ( inPt.y !== edgeLowPt.y ) \t\tcontinue;\t\t\t// parallel\n\t\t\t\t\t// edge lies on the same horizontal line as inPt\n\t\t\t\t\tif ( ( ( edgeHighPt.x <= inPt.x ) && ( inPt.x <= edgeLowPt.x ) ) ||\n\t\t\t\t\t\t ( ( edgeLowPt.x <= inPt.x ) && ( inPt.x <= edgeHighPt.x ) ) )\t\treturn\ttrue;\t// inPt: Point on contour !\n\t\t\t\t\t// continue;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\treturn\tinside;\n\n\t\t}\n\n\t\tconst isClockWise = ShapeUtils.isClockWise;\n\n\t\tconst subPaths = this.subPaths;\n\t\tif ( subPaths.length === 0 ) return [];\n\n\t\tlet solid, tmpPath, tmpShape;\n\t\tconst shapes = [];\n\n\t\tif ( subPaths.length === 1 ) {\n\n\t\t\ttmpPath = subPaths[ 0 ];\n\t\t\ttmpShape = new Shape();\n\t\t\ttmpShape.curves = tmpPath.curves;\n\t\t\tshapes.push( tmpShape );\n\t\t\treturn shapes;\n\n\t\t}\n\n\t\tlet holesFirst = ! isClockWise( subPaths[ 0 ].getPoints() );\n\t\tholesFirst = isCCW ? ! holesFirst : holesFirst;\n\n\t\t// console.log(\"Holes first\", holesFirst);\n\n\t\tconst betterShapeHoles = [];\n\t\tconst newShapes = [];\n\t\tlet newShapeHoles = [];\n\t\tlet mainIdx = 0;\n\t\tlet tmpPoints;\n\n\t\tnewShapes[ mainIdx ] = undefined;\n\t\tnewShapeHoles[ mainIdx ] = [];\n\n\t\tfor ( let i = 0, l = subPaths.length; i < l; i ++ ) {\n\n\t\t\ttmpPath = subPaths[ i ];\n\t\t\ttmpPoints = tmpPath.getPoints();\n\t\t\tsolid = isClockWise( tmpPoints );\n\t\t\tsolid = isCCW ? ! solid : solid;\n\n\t\t\tif ( solid ) {\n\n\t\t\t\tif ( ( ! holesFirst ) && ( newShapes[ mainIdx ] ) )\tmainIdx ++;\n\n\t\t\t\tnewShapes[ mainIdx ] = { s: new Shape(), p: tmpPoints };\n\t\t\t\tnewShapes[ mainIdx ].s.curves = tmpPath.curves;\n\n\t\t\t\tif ( holesFirst )\tmainIdx ++;\n\t\t\t\tnewShapeHoles[ mainIdx ] = [];\n\n\t\t\t\t//console.log('cw', i);\n\n\t\t\t} else {\n\n\t\t\t\tnewShapeHoles[ mainIdx ].push( { h: tmpPath, p: tmpPoints[ 0 ] } );\n\n\t\t\t\t//console.log('ccw', i);\n\n\t\t\t}\n\n\t\t}\n\n\t\t// only Holes? -> probably all Shapes with wrong orientation\n\t\tif ( ! newShapes[ 0 ] )\treturn\ttoShapesNoHoles( subPaths );\n\n\n\t\tif ( newShapes.length > 1 ) {\n\n\t\t\tlet ambiguous = false;\n\t\t\tlet toChange = 0;\n\n\t\t\tfor ( let sIdx = 0, sLen = newShapes.length; sIdx < sLen; sIdx ++ ) {\n\n\t\t\t\tbetterShapeHoles[ sIdx ] = [];\n\n\t\t\t}\n\n\t\t\tfor ( let sIdx = 0, sLen = newShapes.length; sIdx < sLen; sIdx ++ ) {\n\n\t\t\t\tconst sho = newShapeHoles[ sIdx ];\n\n\t\t\t\tfor ( let hIdx = 0; hIdx < sho.length; hIdx ++ ) {\n\n\t\t\t\t\tconst ho = sho[ hIdx ];\n\t\t\t\t\tlet hole_unassigned = true;\n\n\t\t\t\t\tfor ( let s2Idx = 0; s2Idx < newShapes.length; s2Idx ++ ) {\n\n\t\t\t\t\t\tif ( isPointInsidePolygon( ho.p, newShapes[ s2Idx ].p ) ) {\n\n\t\t\t\t\t\t\tif ( sIdx !== s2Idx )\ttoChange ++;\n\n\t\t\t\t\t\t\tif ( hole_unassigned ) {\n\n\t\t\t\t\t\t\t\thole_unassigned = false;\n\t\t\t\t\t\t\t\tbetterShapeHoles[ s2Idx ].push( ho );\n\n\t\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t\tambiguous = true;\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( hole_unassigned ) {\n\n\t\t\t\t\t\tbetterShapeHoles[ sIdx ].push( ho );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tif ( toChange > 0 && ambiguous === false ) {\n\n\t\t\t\tnewShapeHoles = betterShapeHoles;\n\n\t\t\t}\n\n\t\t}\n\n\t\tlet tmpHoles;\n\n\t\tfor ( let i = 0, il = newShapes.length; i < il; i ++ ) {\n\n\t\t\ttmpShape = newShapes[ i ].s;\n\t\t\tshapes.push( tmpShape );\n\t\t\ttmpHoles = newShapeHoles[ i ];\n\n\t\t\tfor ( let j = 0, jl = tmpHoles.length; j < jl; j ++ ) {\n\n\t\t\t\ttmpShape.holes.push( tmpHoles[ j ].h );\n\n\t\t\t}\n\n\t\t}\n\n\t\t//console.log(\"shape\", shapes);\n\n\t\treturn shapes;\n\n\t}\n\n}\n\nclass WebGLMultipleRenderTargets extends WebGLRenderTarget { // @deprecated, r162\n\n\tconstructor( width = 1, height = 1, count = 1, options = {} ) {\n\n\t\tconsole.warn( 'THREE.WebGLMultipleRenderTargets has been deprecated and will be removed in r172. Use THREE.WebGLRenderTarget and set the \"count\" parameter to enable MRT.' );\n\n\t\tsuper( width, height, { ...options, count } );\n\n\t\tthis.isWebGLMultipleRenderTargets = true;\n\n\t}\n\n\tget texture() {\n\n\t\treturn this.textures;\n\n\t}\n\n}\n\nif ( typeof __THREE_DEVTOOLS__ !== 'undefined' ) {\n\n\t__THREE_DEVTOOLS__.dispatchEvent( new CustomEvent( 'register', { detail: {\n\t\trevision: REVISION,\n\t} } ) );\n\n}\n\nif ( typeof window !== 'undefined' ) {\n\n\tif ( window.__THREE__ ) {\n\n\t\tconsole.warn( 'WARNING: Multiple instances of Three.js being imported.' );\n\n\t} else {\n\n\t\twindow.__THREE__ = REVISION;\n\n\t}\n\n}\n\nexport { ACESFilmicToneMapping, AddEquation, AddOperation, AdditiveAnimationBlendMode, AdditiveBlending, AgXToneMapping, AlphaFormat, AlwaysCompare, AlwaysDepth, AlwaysStencilFunc, AmbientLight, AnimationAction, AnimationClip, AnimationLoader, AnimationMixer, AnimationObjectGroup, AnimationUtils, ArcCurve, ArrayCamera, ArrowHelper, AttachedBindMode, Audio, AudioAnalyser, AudioContext, AudioListener, AudioLoader, AxesHelper, BackSide, BasicDepthPacking, BasicShadowMap, BatchedMesh, Bone, BooleanKeyframeTrack, Box2, Box3, Box3Helper, BoxGeometry, BoxHelper, BufferAttribute, BufferGeometry, BufferGeometryLoader, ByteType, Cache, Camera, CameraHelper, CanvasTexture, CapsuleGeometry, CatmullRomCurve3, CineonToneMapping, CircleGeometry, ClampToEdgeWrapping, Clock, Color, ColorKeyframeTrack, ColorManagement, CompressedArrayTexture, CompressedCubeTexture, CompressedTexture, CompressedTextureLoader, ConeGeometry, ConstantAlphaFactor, ConstantColorFactor, CubeCamera, CubeReflectionMapping, CubeRefractionMapping, CubeTexture, CubeTextureLoader, CubeUVReflectionMapping, CubicBezierCurve, CubicBezierCurve3, CubicInterpolant, CullFaceBack, CullFaceFront, CullFaceFrontBack, CullFaceNone, Curve, CurvePath, CustomBlending, CustomToneMapping, CylinderGeometry, Cylindrical, Data3DTexture, DataArrayTexture, DataTexture, DataTextureLoader, DataUtils, DecrementStencilOp, DecrementWrapStencilOp, DefaultLoadingManager, DepthFormat, DepthStencilFormat, DepthTexture, DetachedBindMode, DirectionalLight, DirectionalLightHelper, DiscreteInterpolant, DisplayP3ColorSpace, DodecahedronGeometry, DoubleSide, DstAlphaFactor, DstColorFactor, DynamicCopyUsage, DynamicDrawUsage, DynamicReadUsage, EdgesGeometry, EllipseCurve, EqualCompare, EqualDepth, EqualStencilFunc, EquirectangularReflectionMapping, EquirectangularRefractionMapping, Euler, EventDispatcher, ExtrudeGeometry, FileLoader, Float16BufferAttribute, Float32BufferAttribute, FloatType, Fog, FogExp2, FramebufferTexture, FrontSide, Frustum, GLBufferAttribute, GLSL1, GLSL3, GreaterCompare, GreaterDepth, GreaterEqualCompare, GreaterEqualDepth, GreaterEqualStencilFunc, GreaterStencilFunc, GridHelper, Group, HalfFloatType, HemisphereLight, HemisphereLightHelper, IcosahedronGeometry, ImageBitmapLoader, ImageLoader, ImageUtils, IncrementStencilOp, IncrementWrapStencilOp, InstancedBufferAttribute, InstancedBufferGeometry, InstancedInterleavedBuffer, InstancedMesh, Int16BufferAttribute, Int32BufferAttribute, Int8BufferAttribute, IntType, InterleavedBuffer, InterleavedBufferAttribute, Interpolant, InterpolateDiscrete, InterpolateLinear, InterpolateSmooth, InvertStencilOp, KeepStencilOp, KeyframeTrack, LOD, LatheGeometry, Layers, LessCompare, LessDepth, LessEqualCompare, LessEqualDepth, LessEqualStencilFunc, LessStencilFunc, Light, LightProbe, Line, Line3, LineBasicMaterial, LineCurve, LineCurve3, LineDashedMaterial, LineLoop, LineSegments, LinearDisplayP3ColorSpace, LinearFilter, LinearInterpolant, LinearMipMapLinearFilter, LinearMipMapNearestFilter, LinearMipmapLinearFilter, LinearMipmapNearestFilter, LinearSRGBColorSpace, LinearToneMapping, LinearTransfer, Loader, LoaderUtils, LoadingManager, LoopOnce, LoopPingPong, LoopRepeat, LuminanceAlphaFormat, LuminanceFormat, MOUSE, Material, MaterialLoader, MathUtils, Matrix3, Matrix4, MaxEquation, Mesh, MeshBasicMaterial, MeshDepthMaterial, MeshDistanceMaterial, MeshLambertMaterial, MeshMatcapMaterial, MeshNormalMaterial, MeshPhongMaterial, MeshPhysicalMaterial, MeshStandardMaterial, MeshToonMaterial, MinEquation, MirroredRepeatWrapping, MixOperation, MultiplyBlending, MultiplyOperation, NearestFilter, NearestMipMapLinearFilter, NearestMipMapNearestFilter, NearestMipmapLinearFilter, NearestMipmapNearestFilter, NeutralToneMapping, NeverCompare, NeverDepth, NeverStencilFunc, NoBlending, NoColorSpace, NoToneMapping, NormalAnimationBlendMode, NormalBlending, NotEqualCompare, NotEqualDepth, NotEqualStencilFunc, NumberKeyframeTrack, Object3D, ObjectLoader, ObjectSpaceNormalMap, OctahedronGeometry, OneFactor, OneMinusConstantAlphaFactor, OneMinusConstantColorFactor, OneMinusDstAlphaFactor, OneMinusDstColorFactor, OneMinusSrcAlphaFactor, OneMinusSrcColorFactor, OrthographicCamera, P3Primaries, PCFShadowMap, PCFSoftShadowMap, PMREMGenerator, Path, PerspectiveCamera, Plane, PlaneGeometry, PlaneHelper, PointLight, PointLightHelper, Points, PointsMaterial, PolarGridHelper, PolyhedronGeometry, PositionalAudio, PropertyBinding, PropertyMixer, QuadraticBezierCurve, QuadraticBezierCurve3, Quaternion, QuaternionKeyframeTrack, QuaternionLinearInterpolant, RED_GREEN_RGTC2_Format, RED_RGTC1_Format, REVISION, RGBADepthPacking, RGBAFormat, RGBAIntegerFormat, RGBA_ASTC_10x10_Format, RGBA_ASTC_10x5_Format, RGBA_ASTC_10x6_Format, RGBA_ASTC_10x8_Format, RGBA_ASTC_12x10_Format, RGBA_ASTC_12x12_Format, RGBA_ASTC_4x4_Format, RGBA_ASTC_5x4_Format, RGBA_ASTC_5x5_Format, RGBA_ASTC_6x5_Format, RGBA_ASTC_6x6_Format, RGBA_ASTC_8x5_Format, RGBA_ASTC_8x6_Format, RGBA_ASTC_8x8_Format, RGBA_BPTC_Format, RGBA_ETC2_EAC_Format, RGBA_PVRTC_2BPPV1_Format, RGBA_PVRTC_4BPPV1_Format, RGBA_S3TC_DXT1_Format, RGBA_S3TC_DXT3_Format, RGBA_S3TC_DXT5_Format, RGBFormat, RGB_BPTC_SIGNED_Format, RGB_BPTC_UNSIGNED_Format, RGB_ETC1_Format, RGB_ETC2_Format, RGB_PVRTC_2BPPV1_Format, RGB_PVRTC_4BPPV1_Format, RGB_S3TC_DXT1_Format, RGFormat, RGIntegerFormat, RawShaderMaterial, Ray, Raycaster, Rec709Primaries, RectAreaLight, RedFormat, RedIntegerFormat, ReinhardToneMapping, RenderTarget, RepeatWrapping, ReplaceStencilOp, ReverseSubtractEquation, RingGeometry, SIGNED_RED_GREEN_RGTC2_Format, SIGNED_RED_RGTC1_Format, SRGBColorSpace, SRGBTransfer, Scene, ShaderChunk, ShaderLib, ShaderMaterial, ShadowMaterial, Shape, ShapeGeometry, ShapePath, ShapeUtils, ShortType, Skeleton, SkeletonHelper, SkinnedMesh, Source, Sphere, SphereGeometry, Spherical, SphericalHarmonics3, SplineCurve, SpotLight, SpotLightHelper, Sprite, SpriteMaterial, SrcAlphaFactor, SrcAlphaSaturateFactor, SrcColorFactor, StaticCopyUsage, StaticDrawUsage, StaticReadUsage, StereoCamera, StreamCopyUsage, StreamDrawUsage, StreamReadUsage, StringKeyframeTrack, SubtractEquation, SubtractiveBlending, TOUCH, TangentSpaceNormalMap, TetrahedronGeometry, Texture, TextureLoader, TorusGeometry, TorusKnotGeometry, Triangle, TriangleFanDrawMode, TriangleStripDrawMode, TrianglesDrawMode, TubeGeometry, UVMapping, Uint16BufferAttribute, Uint32BufferAttribute, Uint8BufferAttribute, Uint8ClampedBufferAttribute, Uniform, UniformsGroup, UniformsLib, UniformsUtils, UnsignedByteType, UnsignedInt248Type, UnsignedInt5999Type, UnsignedIntType, UnsignedShort4444Type, UnsignedShort5551Type, UnsignedShortType, VSMShadowMap, Vector2, Vector3, Vector4, VectorKeyframeTrack, VideoTexture, WebGL3DRenderTarget, WebGLArrayRenderTarget, WebGLCoordinateSystem, WebGLCubeRenderTarget, WebGLMultipleRenderTargets, WebGLRenderTarget, WebGLRenderer, WebGLUtils, WebGPUCoordinateSystem, WireframeGeometry, WrapAroundEnding, ZeroCurvatureEnding, ZeroFactor, ZeroSlopeEnding, ZeroStencilOp, createCanvasElement };\n","import { Matrix4, ShaderLib } from 'three';\nimport { defaultObjectColors, defaultSemanticsColors } from '../defaults/colors.js';\nimport { POINTS, LINES, TRIANGLES } from './geometry/GeometryData';\nimport 'three/examples/jsm/lines/LineMaterial';\nimport { CityObjectsMaterial } from '../materials/CityObjectsMaterial.js';\nimport { CityObjectsMesh } from '../objects/CityObjectsMesh.js';\nimport { CityObjectsLines } from '../objects/CityObjectsLines.js';\nimport { CityObjectsPoints } from '../objects/CityObjectsPoints.js';\nimport { CityObjectsLineMaterial } from '../materials/CityObjectsLineMaterial.js';\nimport { CityObjectsPointsMaterial } from '../materials/CityObjectsPointsMaterial.js';\nimport { TriangleParser } from './geometry/TriangleParser';\nimport { LineParser } from './geometry/LineParser';\nimport { PointParser } from './geometry/PointParser';\nimport { CityObjectsInstancedMesh } from '../objects/CityObjectsInstancedMesh.js';\n\nexport class CityJSONWorkerParser {\n\n\tconstructor() {\n\n\t\tthis.matrix = null;\n\t\tthis.onChunkLoad = null;\n\t\tthis.onComplete = null;\n\t\tthis.chunkSize = 2000;\n\t\tthis.loading = false;\n\n\t\tthis.objectColors = defaultObjectColors;\n\t\tthis.surfaceColors = defaultSemanticsColors;\n\n\t\tthis.lods = [];\n\n\t\tthis.resetMaterial();\n\n\t}\n\n\tresetMaterial() {\n\n\t\tthis.meshMaterial = new CityObjectsMaterial( ShaderLib.lambert, {\n\t\t\tobjectColors: this.objectColors,\n\t\t\tsurfaceColors: this.surfaceColors\n\t\t} );\n\n\t\tthis.lineMaterial = new CityObjectsLineMaterial( {\n\n\t\t\tcolor: 0xffffff,\n\t\t\tlinewidth: 0.001,\n\t\t\tvertexColors: false,\n\t\t\tdashed: false,\n\t\t\tobjectColors: this.objectColors,\n\t\t\tsurfaceColors: this.surfaceColors\n\n\t\t} );\n\n\t\tthis.pointsMaterial = new CityObjectsPointsMaterial( {\n\t\t\tsize: 10,\n\t\t\tobjectColors: this.objectColors,\n\t\t\tsurfaceColors: this.surfaceColors\n\t\t} );\n\n\t}\n\n\tsetMaterialsColors( objectColors, surfaceColors ) {\n\n\t\tthis.meshMaterial.objectColors = objectColors;\n\t\tthis.meshMaterial.surfaceColors = surfaceColors;\n\n\t\tthis.lineMaterial.objectColors = objectColors;\n\t\tthis.lineMaterial.surfaceColors = surfaceColors;\n\n\t\tthis.pointsMaterial.objectColors = objectColors;\n\t\tthis.pointsMaterial.surfaceColors = surfaceColors;\n\n\t}\n\n\tparse( data, scene ) {\n\n\t\tthis.loading = true;\n\n\t\t// Sets the web worker that will parse all normal (ie non-instanced)\n\t\t// geometries\n\t\tconst worker = new Worker( new URL( \"./helpers/ParserWorker.js\", import.meta.url ), { type: \"module\" } );\n\t\tconst m = this.matrix;\n\t\tconst onChunkLoad = this.onChunkLoad;\n\t\tconst onComplete = this.onComplete;\n\t\tconst context = this;\n\t\tconst citymodel = data;\n\n\t\tworker.onmessage = function ( e ) {\n\n\t\t\tif ( e.data.type === \"chunkLoaded\" ) {\n\n\t\t\t\tconst vertices = e.data.v_buffer;\n\t\t\t\tconst geometryData = e.data.geometryData;\n\n\t\t\t\tcontext.setMaterialsColors( e.data.objectColors, e.data.surfaceColors );\n\n\t\t\t\tcontext.lods = e.data.lods;\n\t\t\t\tcontext.objectColors = e.data.objectColors;\n\t\t\t\tcontext.surfaceColors = e.data.surfaceColors;\n\n\t\t\t\tif ( e.data.geometryData.geometryType == TRIANGLES ) {\n\n\t\t\t\t\tconst mesh = new CityObjectsMesh( citymodel, vertices, geometryData, m, context.meshMaterial );\n\t\t\t\t\tscene.add( mesh );\n\n\t\t\t\t}\n\n\t\t\t\tif ( e.data.geometryData.geometryType == LINES ) {\n\n\t\t\t\t\tconst lines = new CityObjectsLines( citymodel, vertices, geometryData, m, context.lineMaterial );\n\t\t\t\t\tscene.add( lines );\n\n\t\t\t\t}\n\n\t\t\t\tif ( e.data.geometryData.geometryType == POINTS ) {\n\n\n\t\t\t\t\tconst points = new CityObjectsPoints( citymodel, vertices, geometryData, m, context.pointsMaterial );\n\t\t\t\t\tscene.add( points );\n\n\t\t\t\t}\n\n\t\t\t\tif ( onChunkLoad ) {\n\n\t\t\t\t\tonChunkLoad();\n\n\t\t\t\t}\n\n\t\t\t} else if ( e.data.type === \"done\" ) {\n\n\t\t\t\tcontext.loading = false;\n\n\t\t\t\tif ( data.appearance && data.appearance.materials ) {\n\n\t\t\t\t\tcontext.meshMaterial.materials = data.appearance.materials;\n\n\t\t\t\t}\n\n\t\t\t\tif ( onComplete ) {\n\n\t\t\t\t\tonComplete();\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t};\n\n\t\tworker.postMessage( [ data, { chunkSize: this.chunkSize, objectColors: this.objectColors, lods: this.lods } ] );\n\n\t\t// Parse geometry templates\n\t\tif ( data[ 'geometry-templates' ] ) {\n\n\t\t\tconst templatesGeomData = [];\n\n\t\t\tconst vertices = data[ 'geometry-templates' ][ 'vertices-templates' ];\n\n\t\t\tconst geometryParsers = [\n\t\t\t\tnew TriangleParser( data, Object.keys( data.CityObjects ), this.objectColors, vertices ),\n\t\t\t\tnew LineParser( data, Object.keys( data.CityObjects ), this.objectColors, vertices ),\n\t\t\t\tnew PointParser( data, Object.keys( data.CityObjects ), this.objectColors, vertices )\n\t\t\t];\n\n\t\t\tfor ( const template of data[ 'geometry-templates' ].templates ) {\n\n\t\t\t\tfor ( const geometryParser of geometryParsers ) {\n\n\t\t\t\t\tgeometryParser.lods = this.lods;\n\t\t\t\t\tgeometryParser.parseGeometry( template, - 1, - 1 );\n\t\t\t\t\tthis.lods = geometryParser.lods;\n\n\t\t\t\t\tif ( geometryParser.geomData.count() > 0 ) {\n\n\t\t\t\t\t\ttemplatesGeomData.push( geometryParser.geomData );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tgeometryParser.clean();\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tconst instances = [];\n\n\t\t\tfor ( let i = 0; i < templatesGeomData.length; i ++ ) {\n\n\t\t\t\tinstances.push( {\n\t\t\t\t\tmatrices: [],\n\t\t\t\t\tobjectIds: [],\n\t\t\t\t\tobjectType: [],\n\t\t\t\t\tgeometryIds: []\n\t\t\t\t} );\n\n\t\t\t}\n\n\t\t\tfor ( const objectId in data.CityObjects ) {\n\n\t\t\t\tconst cityObject = data.CityObjects[ objectId ];\n\n\t\t\t\tif ( cityObject.geometry && cityObject.geometry.length > 0 ) {\n\n\t\t\t\t\tfor ( let i = 0; i < cityObject.geometry.length; i ++ ) {\n\n\t\t\t\t\t\tconst geometry = cityObject.geometry[ i ];\n\n\t\t\t\t\t\tif ( geometry.type == \"GeometryInstance\" ) {\n\n\t\t\t\t\t\t\tconst matrix = new Matrix4();\n\t\t\t\t\t\t\tmatrix.set( ... geometry.transformationMatrix );\n\t\t\t\t\t\t\tmatrix.setPosition( ... data.vertices[ geometry.boundaries[ 0 ] ] );\n\n\t\t\t\t\t\t\tinstances[ geometry.template ].matrices.push( matrix );\n\t\t\t\t\t\t\tinstances[ geometry.template ].objectIds.push( Object.keys( data.CityObjects ).indexOf( objectId ) );\n\t\t\t\t\t\t\tinstances[ geometry.template ].objectType.push( Object.keys( this.objectColors ).indexOf( cityObject.type ) );\n\t\t\t\t\t\t\tinstances[ geometry.template ].geometryIds.push( i );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tfor ( let i = 0; i < templatesGeomData.length; i ++ ) {\n\n\t\t\t\tif ( templatesGeomData[ i ].geometryType == TRIANGLES ) {\n\n\t\t\t\t\tconst mesh = new CityObjectsInstancedMesh( citymodel, templatesGeomData[ i ].getVertices( vertices ), templatesGeomData[ i ], instances[ i ], m, this.meshMaterial );\n\t\t\t\t\tscene.add( mesh );\n\n\n\t\t\t\t} else if ( templatesGeomData[ i ].geometryType == LINES ) {\n\n\t\t\t\t\tfor ( let j = 0; j < instances[ i ].matrices.length; j ++ ) {\n\n\t\t\t\t\t\ttemplatesGeomData[ i ].setObjectId( instances[ i ].objectIds[ j ] );\n\t\t\t\t\t\ttemplatesGeomData[ i ].setObjectType( instances[ i ].objectType[ j ] );\n\t\t\t\t\t\ttemplatesGeomData[ i ].setGeometryIdx( instances[ i ].geometryIds[ j ] );\n\n\t\t\t\t\t\tconst line = new CityObjectsLines( templatesGeomData[ i ].getVertices( vertices ), templatesGeomData[ i ], m, this.lineMaterial );\n\t\t\t\t\t\tline.applyMatrix4( instances[ i ].matrices[ j ] );\n\t\t\t\t\t\tscene.add( line );\n\n\t\t\t\t\t}\n\n\t\t\t\t} else if ( templatesGeomData[ i ].geometryType == POINTS ) {\n\n\t\t\t\t\tfor ( let j = 0; j < instances[ i ].matrices.length; j ++ ) {\n\n\t\t\t\t\t\ttemplatesGeomData[ i ].setObjectId( instances[ i ].objectIds[ j ] );\n\t\t\t\t\t\ttemplatesGeomData[ i ].setObjectType( instances[ i ].objectType[ j ] );\n\t\t\t\t\t\ttemplatesGeomData[ i ].setGeometryIdx( instances[ i ].geometryIds[ j ] );\n\n\t\t\t\t\t\tconst line = new CityObjectsPoints( templatesGeomData[ i ].getVertices( vertices ), templatesGeomData[ i ], m, this.pointsMaterial );\n\t\t\t\t\t\tline.applyMatrix4( instances[ i ].matrices[ j ] );\n\t\t\t\t\t\tscene.add( line );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n}\n","export const defaultObjectColors = {\n\t\"Building\": 0x7497df,\n\t\"BuildingPart\": 0x7497df,\n\t\"BuildingInstallation\": 0x7497df,\n\t\"Bridge\": 0x999999,\n\t\"BridgePart\": 0x999999,\n\t\"BridgeInstallation\": 0x999999,\n\t\"BridgeConstructionElement\": 0x999999,\n\t\"CityObjectGroup\": 0xffffb3,\n\t\"CityFurniture\": 0xcc0000,\n\t\"GenericCityObject\": 0xcc0000,\n\t\"LandUse\": 0xffffb3,\n\t\"PlantCover\": 0x39ac39,\n\t\"Railway\": 0x000000,\n\t\"Road\": 0x999999,\n\t\"SolitaryVegetationObject\": 0x39ac39,\n\t\"TINRelief\": 0xffdb99,\n\t\"TransportSquare\": 0x999999,\n\t\"Tunnel\": 0x999999,\n\t\"TunnelPart\": 0x999999,\n\t\"TunnelInstallation\": 0x999999,\n\t\"WaterBody\": 0x4da6ff\n};\n\nexport const defaultSemanticsColors = {\n\t\"GroundSurface\": 0x999999,\n\t\"WallSurface\": 0xffffff,\n\t\"RoofSurface\": 0xff0000,\n\t\"TrafficArea\": 0x6e6e6e,\n\t\"AuxiliaryTrafficArea\": 0x2c8200,\n\t\"Window\": 0x0059ff,\n\t\"Door\": 0x640000\n};\n","// Geometry types\nexport const POINTS = 0;\nexport const LINES = 1;\nexport const TRIANGLES = 2;\n\nexport class GeometryData {\n\n\tconstructor( geometryType ) {\n\n\t\tthis.geometryType = geometryType;\n\n\t\tthis.vertexIds = [];\n\t\tthis.objectIds = [];\n\t\tthis.objectTypes = [];\n\t\tthis.semanticSurfaces = [];\n\t\tthis.geometryIds = [];\n\t\tthis.boundaryIds = [];\n\t\tthis.lodIds = [];\n\t\tthis.materials = {};\n\t\tthis.textures = {};\n\n\t}\n\n\tappendMaterial( theme, v ) {\n\n\t\tif ( ! ( theme in this.materials ) ) {\n\n\t\t\tthis.materials[ theme ] = [];\n\n\t\t}\n\n\t\tconst themeArray = this.materials[ theme ];\n\n\t\tfor ( let i = themeArray.length; i < this.count() - 1; i ++ ) {\n\n\t\t\tthemeArray.push( - 1 );\n\n\t\t}\n\n\t\tthis.materials[ theme ].push( v );\n\n\t}\n\n\tappendTexture( theme, values ) {\n\n\t\tif ( ! ( theme in this.textures ) ) {\n\n\t\t\tthis.textures[ theme ] = {\n\t\t\t\tindex: [],\n\t\t\t\tuvs: []\n\t\t\t};\n\n\t\t}\n\n\t\tconst themeObject = this.textures[ theme ];\n\n\t\tfor ( let i = themeObject.index.length; i < this.count() - 1; i ++ ) {\n\n\t\t\tthemeObject.index.push( - 1 );\n\t\t\tthemeObject.uvs.push( [ 0, 0 ] );\n\n\t\t}\n\n\t\tthemeObject.index.push( values.index );\n\t\tthemeObject.uvs.push( values.uvs );\n\n\t}\n\n\taddVertex( vertexId, objectId, objectType, surfaceType, geometryIdx, boundaryIdx, lodIdx, material, texture ) {\n\n\t\tthis.vertexIds.push( vertexId );\n\t\tthis.objectIds.push( objectId );\n\t\tthis.objectTypes.push( objectType );\n\t\tthis.semanticSurfaces.push( surfaceType );\n\t\tthis.geometryIds.push( geometryIdx );\n\t\tthis.boundaryIds.push( boundaryIdx );\n\t\tthis.lodIds.push( lodIdx );\n\n\t\tif ( material ) {\n\n\t\t\tconst context = this;\n\n\t\t\tObject.entries( material ).forEach( entry => {\n\n\t\t\t\tconst [ theme, value ] = entry;\n\n\t\t\t\tcontext.appendMaterial( theme, value );\n\n\t\t\t} );\n\n\t\t}\n\n\t\tif ( texture ) {\n\n\t\t\tconst context = this;\n\n\t\t\tObject.entries( texture ).forEach( entry => {\n\n\t\t\t\tconst [ theme, value ] = entry;\n\n\t\t\t\tcontext.appendTexture( theme, value );\n\n\t\t\t} );\n\n\t\t}\n\n\t}\n\n\tcompleteMaterials() {\n\n\t\tfor ( const theme in this.materials ) {\n\n\t\t\tconst themeArray = this.materials[ theme ];\n\n\t\t\tfor ( let i = themeArray.length; i < this.count(); i ++ ) {\n\n\t\t\t\tthemeArray.push( - 1 );\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\tcompleteTextures() {\n\n\t\tfor ( const theme in this.textures ) {\n\n\t\t\tconst themeObject = this.textures[ theme ];\n\n\t\t\tfor ( let i = themeObject.index.length; i < this.count(); i ++ ) {\n\n\t\t\t\tthemeObject.index.push( - 1 );\n\t\t\t\tthemeObject.uvs.push( [ 0, 0 ] );\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\tcount() {\n\n\t\treturn this.vertexIds.length;\n\n\t}\n\n\tgetVertices( vertexList ) {\n\n\t\tlet vertices = [];\n\n\t\tfor ( const vertexIndex of this.vertexIds ) {\n\n\t\t\tconst vertex = vertexList[ vertexIndex ];\n\n\t\t\tvertices.push( ...vertex );\n\n\t\t}\n\n\t\treturn vertices;\n\n\t}\n\n\ttoObject() {\n\n\t\tthis.completeMaterials();\n\t\tthis.completeTextures();\n\n\t\treturn {\n\t\t\tgeometryType: this.geometryType,\n\t\t\tobjectIds: this.objectIds,\n\t\t\tobjectType: this.objectTypes,\n\t\t\tsemanticSurfaces: this.semanticSurfaces,\n\t\t\tgeometryIds: this.geometryIds,\n\t\t\tboundaryIds: this.boundaryIds,\n\t\t\tlodIds: this.lodIds,\n\t\t\tmaterials: this.materials,\n\t\t\ttextures: this.textures\n\t\t};\n\n\t}\n\n\tsetObjectId( objectId ) {\n\n\t\tfor ( let i = 0; i < this.objectIds.length; i ++ ) {\n\n\t\t\tthis.objectIds[ i ] = objectId;\n\n\t\t}\n\n\t}\n\n\n\tsetObjectType( objectType ) {\n\n\t\tfor ( let i = 0; i < this.objectTypes.length; i ++ ) {\n\n\t\t\tthis.objectTypes[ i ] = objectType;\n\n\t\t}\n\n\t}\n\n\tsetGeometryIdx( geometryIdx ) {\n\n\t\tfor ( let i = 0; i < this.geometryIds.length; i ++ ) {\n\n\t\t\tthis.geometryIds[ i ] = geometryIdx;\n\n\t\t}\n\n\t}\n\n\tmerge( otherGeomData ) {\n\n\t\tif ( otherGeomData.geometryType != this.geometryType ) {\n\n\t\t\tconsole.warn( \"Merging different types of geometry data!\" );\n\n\t\t}\n\n\t\tthis.vertexIds.concat( this.otherGeomData.vertexId );\n\t\tthis.objectIds.concat( this.otherGeomData.objectId );\n\t\tthis.objectTypes.concat( this.otherGeomData.objectType );\n\t\tthis.semanticSurfaces.concat( this.otherGeomData.surfaceType );\n\t\tthis.geometryIds.concat( this.otherGeomData.geometryIdx );\n\t\tthis.boundaryIds.concat( this.otherGeomData.boundaryIdx );\n\t\tthis.lodIds.concat( this.otherGeomData.lodIdx );\n\n\t}\n\n}\n","import { ShaderChunk, UniformsLib, UniformsUtils } from \"three\";\nimport { CityObjectsBaseMaterial } from \"./CityObjectsBaseMaterial\";\n\nexport class CityObjectsMaterial extends CityObjectsBaseMaterial {\n\n\tconstructor( shader, parameters ) {\n\n\t\tconst newShader = { ...shader };\n\t\tnewShader.uniforms = {\n\t\t\t...UniformsUtils.clone( UniformsLib.cityobject ),\n\t\t\t...UniformsUtils.clone( shader.uniforms ),\n\t\t};\n\t\tnewShader.extensions = {\n\t\t\tderivatives: true,\n\t\t};\n\t\tnewShader.lights = true;\n\t\tnewShader.vertexShader =\n\t\tShaderChunk.cityobjectinclude_vertex +\n\t\tnewShader.vertexShader.replace(\n\t\t\t/#include /,\n\t\t\t`\n\t\t\t#include \n\t\t\t`\n\t\t\t+ ShaderChunk.cityobjectdiffuse_vertex\n\t\t\t+ ShaderChunk.cityobjectshowlod_vertex\n\t\t);\n\t\tnewShader.fragmentShader =\n\t\t`\n\t\t\tvarying vec3 diffuse_;\n\t\t\tvarying float discard_;\n\n\t\t\t#ifdef TEXTURE_THEME\n\n\t\t\t\tuniform sampler2D cityTexture;\n\n\t\t\t\tflat in int vTexIndex;\n\t\t\t\tvarying vec2 vTexUV;\n\n\t\t\t#endif\n\n\t\t\t#ifdef MATERIAL_THEME\n\n\t\t\t\tvarying vec3 emissive_;\n\t\t\t\n\t\t\t#endif\n\t\t` +\n\t\tnewShader.fragmentShader.replace(\n\t\t\t/vec4 diffuseColor = vec4\\( diffuse, opacity \\);/,\n\t\t\t`\n\t\t\tvec4 diffuseColor = vec4( diffuse_, opacity );\n\n\t\t\t#ifdef TEXTURE_THEME\n\n\t\t\t\tif ( vTexIndex > - 1 ) {\n\n\t\t\t\t\tvec4 tempDiffuseColor = vec4(1.0, 1.0, 1.0, 0.0);\n\n\t\t\t\t\ttempDiffuseColor = texture2D( cityTexture, vTexUV );\n\n\t\t\t\t\tdiffuseColor *= tempDiffuseColor;\n\n\t\t\t\t}\n\n\t\t\t#endif\n\n\t\t\t#ifdef SHOW_LOD\n\n\t\t\t\tif ( discard_ > 0.0 ) {\n\t\t\t\t\tdiscard;\n\t\t\t\t}\n\t\t\t\n\t\t\t#endif\n\t\t\t`\n\t\t).replace(\n\t\t\t/vec3 totalEmissiveRadiance = emissive;/,\n\t\t\t`\n\t\t\t#ifdef MATERIAL_THEME\n\n\t\t\t\tvec3 totalEmissiveRadiance = emissive_;\n\n\t\t\t#else\n\n\t\t\t\tvec3 totalEmissiveRadiance = emissive;\n\n\t\t\t#endif\n\t\t\t`\n\t\t);\n\n\t\tsuper( newShader );\n\n\t\tthis.setValues( parameters );\n\n\t}\n\n}\n","import { Color, ShaderChunk, ShaderMaterial, UniformsLib } from \"three\";\n\nUniformsLib.cityobject = {\n\n\tobjectColors: { value: [] },\n\tsurfaceColors: { value: [] },\n\tattributeColors: { value: [] },\n\tcityMaterials: { value: [] },\n\tcityTexture: { type: 't' },\n\tshowLod: { value: - 1 },\n\thighlightedObjId: { value: - 1 },\n\thighlightedGeomId: { value: - 1 },\n\thighlightedBoundId: { value: - 1 },\n\thighlightColor: { value: new Color( 0xFFC107 ).convertSRGBToLinear() }\n\n};\n\nShaderChunk.cityobjectinclude_vertex = `\n uniform vec3 objectColors[ OBJCOLOR_COUNT ];\n uniform vec3 highlightColor;\n uniform float highlightedObjId;\n \n attribute float objectid;\n attribute int type;\n \n varying vec3 diffuse_;\n\n #ifdef SHOW_SEMANTICS\n\n uniform vec3 surfaceColors[ SEMANTIC_COUNT ];\n\n attribute int surfacetype;\n\n #endif\n\n\t\t#ifdef COLOR_ATTRIBUTE\n\n uniform vec3 attributeColors[ ATTRIBUTE_COUNT ];\n\n attribute int attributevalue;\n\n #endif\n\n #ifdef SELECT_SURFACE\n\n uniform float highlightedGeomId;\n uniform float highlightedBoundId;\n\n attribute float geometryid;\n attribute float boundaryid;\n\n #endif\n\n #ifdef SHOW_LOD\n\n uniform float showLod;\n\n attribute float lodid;\n\n varying float discard_;\n \n #endif\n\n\t\t#ifdef MATERIAL_THEME\n\n\t\t\tstruct CityMaterial\n\t\t\t{\n\t\t\t\tvec3 diffuseColor;\n\t\t\t\tvec3 emissiveColor;\n\t\t\t\tvec3 specularColor;\n\t\t\t};\n\n\t\t\tuniform CityMaterial cityMaterials[ MATERIAL_COUNT ];\n\n\t\t\tvarying vec3 emissive_;\n\n\t\t\tattribute int MATERIAL_THEME;\n\n\t\t#endif\n\n\t\t#ifdef TEXTURE_THEME\n\n\t\t\tattribute int TEXTURE_THEME;\n\t\t\tattribute vec2 TEXTURE_THEME_UV;\n\n\t\t\tflat out int vTexIndex;\n\t\t\tvarying vec2 vTexUV;\n\n\t\t#endif\n `;\n\nShaderChunk.cityobjectdiffuse_vertex = `\n #ifdef SHOW_SEMANTICS\n\n diffuse_ = surfacetype > -1 ? surfaceColors[surfacetype] : objectColors[type];\n\n #else\n\n diffuse_ = objectColors[type];\n\n #endif\n\n\t\t#ifdef COLOR_ATTRIBUTE\n\n diffuse_ = attributevalue > -1 ? attributeColors[attributevalue] : vec3( 0.0, 0.0, 0.0 );\n\n #endif\n\n\t\t#ifdef MATERIAL_THEME\n\n\t\t\tif ( MATERIAL_THEME > - 1 ) {\n\n\t\t\t\tdiffuse_ = cityMaterials[ MATERIAL_THEME ].diffuseColor;\n\t\t\t\temissive_ = cityMaterials[ MATERIAL_THEME ].emissiveColor;\n\n\t\t\t}\n\n\t\t#endif\n\n\t\t#ifdef TEXTURE_THEME\n\n\t\t\tvTexIndex = TEXTURE_THEME;\n\t\t\tvTexUV = TEXTURE_THEME_UV;\n\n\t\t\tif ( vTexIndex > - 1 ) {\n\n\t\t\t\tdiffuse_ = vec3( 1.0, 1.0, 1.0 );\n\n\t\t\t}\n\n\t\t#endif\n\n #ifdef SELECT_SURFACE\n\n diffuse_ = abs( objectid - highlightedObjId ) < 0.5 && abs( geometryid - highlightedGeomId ) < 0.5 && abs( boundaryid - highlightedBoundId ) < 0.5 ? highlightColor : diffuse_;\n\n #else\n\n diffuse_ = abs( objectid - highlightedObjId ) < 0.5 ? highlightColor : diffuse_;\n\n #endif\n `;\n\nShaderChunk.cityobjectshowlod_vertex = `\n #ifdef SHOW_LOD\n\n if ( abs ( lodid - showLod ) > 0.5 ) {\n discard_ = 1.0;\n }\n\n #endif\n `;\n\nexport class CityObjectsBaseMaterial extends ShaderMaterial {\n\n\tconstructor( shader ) {\n\n\t\tsuper( shader );\n\n\t\tthis.objectColors = {};\n\t\tthis.surfaceColors = {};\n\t\tthis.attributeColors = {};\n\t\tthis.materials = [];\n\t\tthis.showSemantics = true;\n\n\t\tthis.textures = [];\n\n\t\tthis.instancing = false;\n\n\t\tthis.isCityObjectsMaterial = true;\n\n\t\tthis.defines.OBJCOLOR_COUNT = 0;\n\t\tthis.defines.SEMANTIC_COUNT = 0;\n\t\tthis.defines.ATTRIBUTE_COUNT = 0;\n\t\tthis.defines.MATERIAL_COUNT = 0;\n\n\t}\n\n\tcreateColorsArray( colors ) {\n\n\t\tconst data = [];\n\t\tfor ( const type in colors ) {\n\n\t\t\tconst color = new Color( colors[ type ] );\n\n\t\t\tdata.push( color.convertSRGBToLinear() );\n\n\t\t}\n\n\t\treturn data;\n\n\t}\n\n\tset attributeColors( colors ) {\n\n\t\tthis.attributeColorsLookup = colors;\n\n\t\tthis.uniforms.attributeColors.value = this.createColorsArray( colors );\n\t\tthis.defines.ATTRIBUTE_COUNT = Object.keys( colors ).length;\n\n\t}\n\n\tget attributeColors() {\n\n\t\treturn this.attributeColorsLookup;\n\n\t}\n\n\tget conditionalFormatting() {\n\n\t\treturn Boolean( 'COLOR_ATTRIBUTE' in this.defines );\n\n\t}\n\n\tset conditionalFormatting( value ) {\n\n\t\tif ( Boolean( value ) !== Boolean( 'COLOR_ATTRIBUTE' in this.defines ) ) {\n\n\t\t\tthis.needsUpdate = true;\n\n\t\t}\n\n\t\tif ( value === true ) {\n\n\t\t\tthis.defines.COLOR_ATTRIBUTE = '';\n\n\t\t} else {\n\n\t\t\tdelete this.defines.COLOR_ATTRIBUTE;\n\n\t\t}\n\n\t}\n\n\tset objectColors( colors ) {\n\n\t\tthis.objectColorsLookup = colors;\n\n\t\t// Maybe here we check if the key order has changed\n\t\tthis.uniforms.objectColors.value = this.createColorsArray( colors );\n\t\tthis.defines.OBJCOLOR_COUNT = Object.keys( colors ).length;\n\n\t}\n\n\tget objectColors() {\n\n\t\treturn this.objectColorsLookup;\n\n\t}\n\n\tset surfaceColors( colors ) {\n\n\t\tthis.surfaceColorsLookup = colors;\n\n\t\t// Maybe here we check if the key order has changed\n\t\tthis.uniforms.surfaceColors.value = this.createColorsArray( colors );\n\t\tthis.defines.SEMANTIC_COUNT = Object.keys( colors ).length;\n\n\t\tthis.needsUpdate = true;\n\n\t}\n\n\tget surfaceColors() {\n\n\t\treturn this.surfaceColorsLookup;\n\n\t}\n\n\tget showSemantics() {\n\n\t\treturn Boolean( 'SHOW_SEMANTICS' in this.defines );\n\n\t}\n\n\tset showSemantics( value ) {\n\n\t\tif ( Boolean( value ) !== Boolean( 'SHOW_SEMANTICS' in this.defines ) ) {\n\n\t\t\tthis.needsUpdate = true;\n\n\t\t}\n\n\t\tif ( value === true ) {\n\n\t\t\tthis.defines.SHOW_SEMANTICS = '';\n\n\t\t} else {\n\n\t\t\tdelete this.defines.SHOW_SEMANTICS;\n\n\t\t}\n\n\t}\n\n\tget selectSurface() {\n\n\t\treturn Boolean( 'SELECT_SURFACE' in this.defines );\n\n\t}\n\n\tset selectSurface( value ) {\n\n\t\tif ( Boolean( value ) !== Boolean( 'SELECT_SURFACE' in this.defines ) ) {\n\n\t\t\tthis.needsUpdate = true;\n\n\t\t}\n\n\t\tif ( value === true ) {\n\n\t\t\tthis.defines.SELECT_SURFACE = '';\n\n\t\t} else {\n\n\t\t\tdelete this.defines.SELECT_SURFACE;\n\n\t\t}\n\n\t}\n\n\tget showLod() {\n\n\t\treturn this.uniforms.showLod.value;\n\n\t}\n\n\tset showLod( value ) {\n\n\t\tif ( Boolean( value > - 1 ) !== Boolean( 'SHOW_LOD' in this.defines ) ) {\n\n\t\t\tthis.needsUpdate = true;\n\n\t\t}\n\n\t\tif ( value > - 1 ) {\n\n\t\t\tthis.defines.SHOW_LOD = '';\n\n\t\t} else {\n\n\t\t\tdelete this.defines.SHOW_LOD;\n\n\t\t}\n\n\t\tthis.uniforms.showLod.value = value;\n\n\t}\n\n\tset materialTheme( value ) {\n\n\t\tconst themeName = value.replace( /[^a-z0-9]/gi, '' );\n\n\t\tif ( themeName !== this.defines.MATERIAL_THEME ) {\n\n\t\t\tthis.needsUpdate = true;\n\n\t\t}\n\n\t\tif ( value === \"undefined\" || value === undefined || value == null ) {\n\n\t\t\tdelete this.defines.MATERIAL_THEME;\n\n\t\t} else {\n\n\t\t\tthis.defines.MATERIAL_THEME = `mat${themeName}`;\n\n\t\t}\n\n\t}\n\n\tset textureTheme( value ) {\n\n\t\tconst themeName = value.replace( /[^a-z0-9]/gi, '' );\n\n\t\tif ( themeName !== this.defines.TEXTURE_THEME ) {\n\n\t\t\tthis.needsUpdate = true;\n\n\t\t}\n\n\t\tif ( value === \"undefined\" || value === undefined || value == null ) {\n\n\t\t\tdelete this.defines.TEXTURE_THEME;\n\t\t\tdelete this.defines.TEXTURE_THEME_UV;\n\n\t\t} else {\n\n\t\t\tthis.defines.TEXTURE_THEME = `tex${themeName}`;\n\t\t\tthis.defines.TEXTURE_THEME_UV = `tex${themeName}uv`;\n\n\t\t}\n\n\t}\n\n\tset materials( materials ) {\n\n\t\tconst data = [];\n\t\tfor ( let i = 0; i < materials.length; i ++ ) {\n\n\t\t\tconst mat = Object.assign( {\n\t\t\t\tdiffuseColor: [ 1, 1, 1 ],\n\t\t\t\temissiveColor: [ 0, 0, 0 ],\n\t\t\t\tspecularColor: [ 1, 1, 1 ],\n\t\t\t}, materials[ i ] );\n\n\t\t\tmat.diffuseColor = new Color( ...mat.diffuseColor ).convertLinearToSRGB();\n\t\t\tmat.emissiveColor = new Color( ...mat.emissiveColor ).convertLinearToSRGB();\n\t\t\tmat.specularColor = new Color( ...mat.specularColor ).convertLinearToSRGB();\n\n\t\t\tdata.push( mat );\n\n\t\t}\n\n\t\tthis.defines.MATERIAL_COUNT = data.length;\n\n\t\tthis.uniforms.cityMaterials.value = data;\n\n\t}\n\n\tget highlightColor() {\n\n\t\treturn this.uniforms.highlightColor;\n\n\t}\n\n\tset highlightColor( color ) {\n\n\t\tif ( typeof color === 'string' || color instanceof String ) {\n\n\t\t\tthis.uniforms.highlightColor.value.setHex( color.replace( '#', '0x' ) );\n\n\t\t} else if ( color instanceof Number ) {\n\n\t\t\tthis.uniforms.highlightColor.setHex( color );\n\n\t\t} else if ( color instanceof Color ) {\n\n\t\t\tthis.uniforms.highlightColor = color;\n\n\t\t}\n\n\t}\n\n\tget highlightedObject() {\n\n\t\treturn {\n\n\t\t\tobjectIndex: this.uniforms.highlightedObjId.value,\n\t\t\tgeometryIndex: this.uniforms.highlightedGeomId.value,\n\t\t\tboundaryIndex: this.uniforms.highlightedBoundId.value\n\n\t\t};\n\n\t}\n\n\t/**\n\t * Expects an object with three properties: `objectIndex`, `geometryIndex`,\n\t * and `boundaryIndex`.\n\t */\n\tset highlightedObject( objectInfo ) {\n\n\t\tif ( objectInfo ) {\n\n\t\t\tthis.uniforms.highlightedObjId.value = objectInfo.objectIndex === undefined ? - 1 : objectInfo.objectIndex;\n\t\t\tthis.uniforms.highlightedGeomId.value = objectInfo.geometryIndex === undefined ? - 1 : objectInfo.geometryIndex;\n\t\t\tthis.uniforms.highlightedBoundId.value = objectInfo.boundaryIndex === undefined ? - 1 : objectInfo.boundaryIndex;\n\n\t\t} else {\n\n\t\t\tthis.uniforms.highlightedObjId.value = - 1;\n\t\t\tthis.uniforms.highlightedGeomId.value = - 1;\n\t\t\tthis.uniforms.highlightedBoundId.value = - 1;\n\n\t\t}\n\n\t}\n\n}\n","import { BufferAttribute,\n\t\t BufferGeometry,\n\t\t Int32BufferAttribute,\n\t\t Mesh } from 'three';\n\nexport class CityObjectsMesh extends Mesh {\n\n\tconstructor( citymodel, vertices, geometryData, matrix, material ) {\n\n\t\tconst geom = new BufferGeometry();\n\n\t\tconst vertexArray = new Float32Array( vertices );\n\t\tgeom.setAttribute( 'position', new BufferAttribute( vertexArray, 3 ) );\n\t\tconst idsArray = new Uint16Array( geometryData.objectIds );\n\t\tgeom.setAttribute( 'objectid', new BufferAttribute( idsArray, 1 ) );\n\t\tconst typeArray = new Uint8Array( geometryData.objectType );\n\t\tgeom.setAttribute( 'type', new Int32BufferAttribute( typeArray, 1 ) );\n\t\tconst surfaceTypeArray = new Int8Array( geometryData.semanticSurfaces );\n\t\tgeom.setAttribute( 'surfacetype', new Int32BufferAttribute( surfaceTypeArray, 1 ) );\n\t\tconst geomIdsArray = new Float32Array( geometryData.geometryIds );\n\t\tgeom.setAttribute( 'geometryid', new BufferAttribute( geomIdsArray, 1 ) );\n\t\tconst lodIdsArray = new Int8Array( geometryData.lodIds );\n\t\tgeom.setAttribute( 'lodid', new BufferAttribute( lodIdsArray, 1 ) );\n\t\tconst boundaryIdsArray = new Float32Array( geometryData.boundaryIds );\n\t\tgeom.setAttribute( 'boundaryid', new BufferAttribute( boundaryIdsArray, 1 ) );\n\n\t\tfor ( const material in geometryData.materials ) {\n\n\t\t\tconst themeName = material.replace( /[^a-z0-9]/gi, '' );\n\n\t\t\tconst materialArray = new Uint8Array( geometryData.materials[ material ] );\n\t\t\tgeom.setAttribute( `mat${themeName}`, new Int32BufferAttribute( materialArray, 1 ) );\n\n\t\t}\n\n\t\tfor ( const texture in geometryData.textures ) {\n\n\t\t\tconst themeName = texture.replace( /[^a-z0-9]/gi, '' );\n\n\t\t\tconst textureArray = new Int16Array( geometryData.textures[ texture ].index );\n\t\t\tgeom.setAttribute( `tex${themeName}`, new Int32BufferAttribute( textureArray, 1 ) );\n\n\t\t\tconst textureUVs = new Float32Array( geometryData.textures[ texture ].uvs.flat( 1 ) );\n\t\t\tgeom.setAttribute( `tex${themeName}uv`, new BufferAttribute( textureUVs, 2 ) );\n\n\t\t}\n\n\t\tgeom.attributes.position.needsUpdate = true;\n\n\t\tif ( matrix ) {\n\n\t\t\tgeom.applyMatrix4( matrix );\n\n\t\t}\n\n\t\tgeom.computeVertexNormals();\n\n\t\tsuper( geom, material );\n\n\t\tthis.citymodel = citymodel;\n\n\t\tthis.isCityObject = true;\n\t\tthis.isCityObjectMesh = true;\n\n\t\tthis.supportsConditionalFormatting = true;\n\t\tthis.supportsMaterials = true;\n\n\t}\n\n\tsetArrayAsAttribute( array ) {\n\n\t\tthis.geometry.setAttribute( 'attributevalue', new Int32BufferAttribute( new Int32Array( array ), 1 ) );\n\n\t}\n\n\taddAttributeByProperty( attributeEvaluator ) {\n\n\t\tconst allValues = attributeEvaluator.getAllValues();\n\t\tconst uniqueValues = attributeEvaluator.getUniqueValues();\n\n\t\tif ( uniqueValues.length < 110 ) {\n\n\t\t\tconst objectLookup = [];\n\t\t\tfor ( const value of allValues ) {\n\n\t\t\t\tobjectLookup.push( uniqueValues.indexOf( value ) );\n\n\t\t\t}\n\n\t\t\tconst objectIds = this.geometry.attributes.objectid.array;\n\n\t\t\tconst finalArray = objectIds.map( i => {\n\n\t\t\t\treturn objectLookup[ i ];\n\n\t\t\t} );\n\n\t\t\tif ( finalArray.length !== objectIds.length ) {\n\n\t\t\t\tconsole.warn( \"Wrong size of attributes array.\" );\n\t\t\t\treturn;\n\n\t\t\t}\n\n\t\t\tthis.setArrayAsAttribute( finalArray );\n\n\t\t}\n\n\t}\n\n\tgetIntersectionVertex( intersection ) {\n\n\t\treturn intersection.face.a;\n\n\t}\n\n\tresolveIntersectionInfo( intersection ) {\n\n\t\tconst intersectionInfo = {};\n\n\t\tconst vertexIdx = this.getIntersectionVertex( intersection );\n\n\t\tconst idx = this.geometry.getAttribute( 'objectid' ).getX( vertexIdx );\n\n\t\tintersectionInfo.vertexIndex = vertexIdx;\n\t\tintersectionInfo.objectIndex = idx;\n\t\tintersectionInfo.objectId = Object.keys( this.citymodel.CityObjects )[ idx ];\n\t\tintersectionInfo.geometryIndex = this.geometry.getAttribute( 'geometryid' ).getX( vertexIdx );\n\t\tintersectionInfo.boundaryIndex = this.geometry.getAttribute( 'boundaryid' ).getX( vertexIdx );\n\n\t\tintersectionInfo.objectTypeIndex = this.geometry.getAttribute( 'type' ).getX( vertexIdx );\n\t\tintersectionInfo.surfaceTypeIndex = this.geometry.getAttribute( 'surfacetype' ).getX( vertexIdx );\n\t\tintersectionInfo.lodIndex = this.geometry.getAttribute( 'lodid' ).getX( vertexIdx );\n\n\t\treturn intersectionInfo;\n\n\t}\n\n\tsetTextureTheme( theme, textureManager ) {\n\n\t\tif ( theme === \"undefined\" ) {\n\n\t\t\tthis.unsetTextures();\n\t\t\treturn;\n\n\t\t}\n\n\t\tconst themeName = theme.replace( /[^a-z0-9]/gi, '' );\n\n\t\tconst attributeName = `tex${themeName}`;\n\n\t\tif ( attributeName in this.geometry.attributes ) {\n\n\t\t\tconst textureIds = this.geometry.attributes[ attributeName ].array;\n\n\t\t\t// Create a lookup of textures\n\t\t\tconst { values, indices } = textureIds.reduce( ( p, c, i ) => {\n\n\t\t\t\tif ( p.last !== c ) {\n\n\t\t\t\t\tp.values.push( c );\n\t\t\t\t\tp.indices.push( i );\n\t\t\t\t\tp.last = c;\n\n\t\t \t\t}\n\n\t\t \t\treturn p;\n\n\t\t\t}, { last: - 1, values: [], indices: [] } );\n\n\t\t\tconst baseMaterial = Array.isArray( this.material ) ? this.material[ this.material.length - 1 ] : this.material;\n\n\t\t\tconst materials = textureManager.getMaterials( baseMaterial );\n\n\t\t\tfor ( const mat of materials ) {\n\n\t\t\t\tif ( mat !== baseMaterial ) {\n\n\t\t\t\t\tmat.textureTheme = theme;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// TODO: We need to add the last element here\n\t\t\tfor ( let i = 0; i < indices.length - 1; i ++ ) {\n\n\t\t\t\tthis.geometry.addGroup( indices[ i ], indices[ i + 1 ] - indices[ i ], values[ i ] > - 1 ? values[ i ] : materials.length - 1 );\n\n\t\t\t}\n\n\t\t\tconst i = indices.length - 1;\n\n\t\t\tthis.geometry.addGroup( indices[ i ], this.geometry.attributes.type.array.length - indices[ i ], values[ i ] > - 1 ? values[ i ] : materials.length - 1 );\n\n\t\t\tthis.material = materials;\n\n\t\t}\n\n\t}\n\n\tunsetTextures() {\n\n\t\tif ( Array.isArray( this.material ) ) {\n\n\t\t\tthis.material = this.material[ this.material.length - 1 ];\n\n\t\t}\n\n\t\tthis.material.textureTheme = \"undefined\";\n\n\t}\n\n}\n","import { InstancedBufferAttribute } from 'three';\nimport { LineSegments2 } from 'three/examples/jsm/lines/LineSegments2';\nimport { LineSegmentsGeometry } from 'three/examples/jsm/lines/LineSegmentsGeometry';\n\nfunction removeDuplicates( array ) {\n\n\tlet newArray = [ array.length / 2 ];\n\n\tfor ( let i = 0; i < array.length; i += 2 ) {\n\n\t\tnewArray[ i / 2 ] = array[ i ];\n\n\t}\n\n\treturn newArray;\n\n}\n\nexport class CityObjectsLines extends LineSegments2 {\n\n\tconstructor( citymodel, vertices, geometryData, matrix, material ) {\n\n\t\tconst geom = new LineSegmentsGeometry();\n\n\t\tgeom.setPositions( new Float32Array( vertices ) );\n\n\t\tconst idsArray = new Float32Array( removeDuplicates( geometryData.objectIds ) );\n\t\tgeom.setAttribute( 'objectid', new InstancedBufferAttribute( idsArray, 1 ) );\n\n\t\tconst typeArray = new Int32Array( removeDuplicates( geometryData.objectType ) );\n\t\tgeom.setAttribute( 'type', new InstancedBufferAttribute( typeArray, 1 ) );\n\t\tconst surfaceTypeArray = new Int32Array( removeDuplicates( geometryData.semanticSurfaces ) );\n\t\tgeom.setAttribute( 'surfacetype', new InstancedBufferAttribute( surfaceTypeArray, 1 ) );\n\t\tconst geomIdsArray = new Float32Array( removeDuplicates( geometryData.geometryIds ) );\n\t\tgeom.setAttribute( 'geometryid', new InstancedBufferAttribute( geomIdsArray, 1 ) );\n\t\tconst lodIdsArray = new Uint8Array( removeDuplicates( geometryData.lodIds ) );\n\t\tgeom.setAttribute( 'lodid', new InstancedBufferAttribute( lodIdsArray, 1 ) );\n\t\tconst boundaryIdsArray = new Float32Array( removeDuplicates( geometryData.boundaryIds ) );\n\t\tgeom.setAttribute( 'boundaryid', new InstancedBufferAttribute( boundaryIdsArray, 1 ) );\n\n\t\t// geom.attributes.position.needsUpdate = true;\n\n\t\tif ( matrix ) {\n\n\t\t\tgeom.applyMatrix4( matrix );\n\n\t\t}\n\n\t\tsuper( geom, material );\n\n\t\tthis.citymodel = citymodel;\n\n\t\tthis.isCityObject = true;\n\t\tthis.isCityObjectLine = true;\n\n\t}\n\n\tgetIntersectionVertex( intersection ) {\n\n\t\treturn intersection.faceIndex;\n\n\t}\n\n\tresolveIntersectionInfo( intersection ) {\n\n\t\tconst intersectionInfo = {};\n\n\t\tconst vertexIdx = this.getIntersectionVertex( intersection );\n\n\t\tconst idx = this.geometry.getAttribute( 'objectid' ).getX( vertexIdx );\n\n\t\tintersectionInfo.vertexIndex = vertexIdx;\n\t\tintersectionInfo.objectIndex = idx;\n\n\t\tintersectionInfo.objectId = Object.keys( this.citymodel.CityObjects )[ idx ];\n\t\tintersectionInfo.geometryIndex = this.geometry.getAttribute( 'geometryid' ).getX( vertexIdx );\n\t\tintersectionInfo.boundaryIndex = this.geometry.getAttribute( 'boundaryid' ).getX( vertexIdx );\n\n\t\tintersectionInfo.objectTypeIndex = this.geometry.getAttribute( 'type' ).getX( vertexIdx );\n\t\tintersectionInfo.surfaceTypeIndex = this.geometry.getAttribute( 'surfacetype' ).getX( vertexIdx );\n\t\tintersectionInfo.lodIndex = this.geometry.getAttribute( 'lodid' ).getX( vertexIdx );\n\n\t\treturn intersectionInfo;\n\n\t}\n\n}\n","import {\n\tBox3,\n\tInstancedInterleavedBuffer,\n\tInterleavedBufferAttribute,\n\tLine3,\n\tMathUtils,\n\tMatrix4,\n\tMesh,\n\tSphere,\n\tVector3,\n\tVector4\n} from 'three';\nimport { LineSegmentsGeometry } from '../lines/LineSegmentsGeometry.js';\nimport { LineMaterial } from '../lines/LineMaterial.js';\n\nconst _viewport = new Vector4();\n\nconst _start = new Vector3();\nconst _end = new Vector3();\n\nconst _start4 = new Vector4();\nconst _end4 = new Vector4();\n\nconst _ssOrigin = new Vector4();\nconst _ssOrigin3 = new Vector3();\nconst _mvMatrix = new Matrix4();\nconst _line = new Line3();\nconst _closestPoint = new Vector3();\n\nconst _box = new Box3();\nconst _sphere = new Sphere();\nconst _clipToWorldVector = new Vector4();\n\nlet _ray, _lineWidth;\n\n// Returns the margin required to expand by in world space given the distance from the camera,\n// line width, resolution, and camera projection\nfunction getWorldSpaceHalfWidth( camera, distance, resolution ) {\n\n\t// transform into clip space, adjust the x and y values by the pixel width offset, then\n\t// transform back into world space to get world offset. Note clip space is [-1, 1] so full\n\t// width does not need to be halved.\n\t_clipToWorldVector.set( 0, 0, - distance, 1.0 ).applyMatrix4( camera.projectionMatrix );\n\t_clipToWorldVector.multiplyScalar( 1.0 / _clipToWorldVector.w );\n\t_clipToWorldVector.x = _lineWidth / resolution.width;\n\t_clipToWorldVector.y = _lineWidth / resolution.height;\n\t_clipToWorldVector.applyMatrix4( camera.projectionMatrixInverse );\n\t_clipToWorldVector.multiplyScalar( 1.0 / _clipToWorldVector.w );\n\n\treturn Math.abs( Math.max( _clipToWorldVector.x, _clipToWorldVector.y ) );\n\n}\n\nfunction raycastWorldUnits( lineSegments, intersects ) {\n\n\tconst matrixWorld = lineSegments.matrixWorld;\n\tconst geometry = lineSegments.geometry;\n\tconst instanceStart = geometry.attributes.instanceStart;\n\tconst instanceEnd = geometry.attributes.instanceEnd;\n\tconst segmentCount = Math.min( geometry.instanceCount, instanceStart.count );\n\n\tfor ( let i = 0, l = segmentCount; i < l; i ++ ) {\n\n\t\t_line.start.fromBufferAttribute( instanceStart, i );\n\t\t_line.end.fromBufferAttribute( instanceEnd, i );\n\n\t\t_line.applyMatrix4( matrixWorld );\n\n\t\tconst pointOnLine = new Vector3();\n\t\tconst point = new Vector3();\n\n\t\t_ray.distanceSqToSegment( _line.start, _line.end, point, pointOnLine );\n\t\tconst isInside = point.distanceTo( pointOnLine ) < _lineWidth * 0.5;\n\n\t\tif ( isInside ) {\n\n\t\t\tintersects.push( {\n\t\t\t\tpoint,\n\t\t\t\tpointOnLine,\n\t\t\t\tdistance: _ray.origin.distanceTo( point ),\n\t\t\t\tobject: lineSegments,\n\t\t\t\tface: null,\n\t\t\t\tfaceIndex: i,\n\t\t\t\tuv: null,\n\t\t\t\tuv1: null,\n\t\t\t} );\n\n\t\t}\n\n\t}\n\n}\n\nfunction raycastScreenSpace( lineSegments, camera, intersects ) {\n\n\tconst projectionMatrix = camera.projectionMatrix;\n\tconst material = lineSegments.material;\n\tconst resolution = material.resolution;\n\tconst matrixWorld = lineSegments.matrixWorld;\n\n\tconst geometry = lineSegments.geometry;\n\tconst instanceStart = geometry.attributes.instanceStart;\n\tconst instanceEnd = geometry.attributes.instanceEnd;\n\tconst segmentCount = Math.min( geometry.instanceCount, instanceStart.count );\n\n\tconst near = - camera.near;\n\n\t//\n\n\t// pick a point 1 unit out along the ray to avoid the ray origin\n\t// sitting at the camera origin which will cause \"w\" to be 0 when\n\t// applying the projection matrix.\n\t_ray.at( 1, _ssOrigin );\n\n\t// ndc space [ - 1.0, 1.0 ]\n\t_ssOrigin.w = 1;\n\t_ssOrigin.applyMatrix4( camera.matrixWorldInverse );\n\t_ssOrigin.applyMatrix4( projectionMatrix );\n\t_ssOrigin.multiplyScalar( 1 / _ssOrigin.w );\n\n\t// screen space\n\t_ssOrigin.x *= resolution.x / 2;\n\t_ssOrigin.y *= resolution.y / 2;\n\t_ssOrigin.z = 0;\n\n\t_ssOrigin3.copy( _ssOrigin );\n\n\t_mvMatrix.multiplyMatrices( camera.matrixWorldInverse, matrixWorld );\n\n\tfor ( let i = 0, l = segmentCount; i < l; i ++ ) {\n\n\t\t_start4.fromBufferAttribute( instanceStart, i );\n\t\t_end4.fromBufferAttribute( instanceEnd, i );\n\n\t\t_start4.w = 1;\n\t\t_end4.w = 1;\n\n\t\t// camera space\n\t\t_start4.applyMatrix4( _mvMatrix );\n\t\t_end4.applyMatrix4( _mvMatrix );\n\n\t\t// skip the segment if it's entirely behind the camera\n\t\tconst isBehindCameraNear = _start4.z > near && _end4.z > near;\n\t\tif ( isBehindCameraNear ) {\n\n\t\t\tcontinue;\n\n\t\t}\n\n\t\t// trim the segment if it extends behind camera near\n\t\tif ( _start4.z > near ) {\n\n\t\t\tconst deltaDist = _start4.z - _end4.z;\n\t\t\tconst t = ( _start4.z - near ) / deltaDist;\n\t\t\t_start4.lerp( _end4, t );\n\n\t\t} else if ( _end4.z > near ) {\n\n\t\t\tconst deltaDist = _end4.z - _start4.z;\n\t\t\tconst t = ( _end4.z - near ) / deltaDist;\n\t\t\t_end4.lerp( _start4, t );\n\n\t\t}\n\n\t\t// clip space\n\t\t_start4.applyMatrix4( projectionMatrix );\n\t\t_end4.applyMatrix4( projectionMatrix );\n\n\t\t// ndc space [ - 1.0, 1.0 ]\n\t\t_start4.multiplyScalar( 1 / _start4.w );\n\t\t_end4.multiplyScalar( 1 / _end4.w );\n\n\t\t// screen space\n\t\t_start4.x *= resolution.x / 2;\n\t\t_start4.y *= resolution.y / 2;\n\n\t\t_end4.x *= resolution.x / 2;\n\t\t_end4.y *= resolution.y / 2;\n\n\t\t// create 2d segment\n\t\t_line.start.copy( _start4 );\n\t\t_line.start.z = 0;\n\n\t\t_line.end.copy( _end4 );\n\t\t_line.end.z = 0;\n\n\t\t// get closest point on ray to segment\n\t\tconst param = _line.closestPointToPointParameter( _ssOrigin3, true );\n\t\t_line.at( param, _closestPoint );\n\n\t\t// check if the intersection point is within clip space\n\t\tconst zPos = MathUtils.lerp( _start4.z, _end4.z, param );\n\t\tconst isInClipSpace = zPos >= - 1 && zPos <= 1;\n\n\t\tconst isInside = _ssOrigin3.distanceTo( _closestPoint ) < _lineWidth * 0.5;\n\n\t\tif ( isInClipSpace && isInside ) {\n\n\t\t\t_line.start.fromBufferAttribute( instanceStart, i );\n\t\t\t_line.end.fromBufferAttribute( instanceEnd, i );\n\n\t\t\t_line.start.applyMatrix4( matrixWorld );\n\t\t\t_line.end.applyMatrix4( matrixWorld );\n\n\t\t\tconst pointOnLine = new Vector3();\n\t\t\tconst point = new Vector3();\n\n\t\t\t_ray.distanceSqToSegment( _line.start, _line.end, point, pointOnLine );\n\n\t\t\tintersects.push( {\n\t\t\t\tpoint: point,\n\t\t\t\tpointOnLine: pointOnLine,\n\t\t\t\tdistance: _ray.origin.distanceTo( point ),\n\t\t\t\tobject: lineSegments,\n\t\t\t\tface: null,\n\t\t\t\tfaceIndex: i,\n\t\t\t\tuv: null,\n\t\t\t\tuv1: null,\n\t\t\t} );\n\n\t\t}\n\n\t}\n\n}\n\nclass LineSegments2 extends Mesh {\n\n\tconstructor( geometry = new LineSegmentsGeometry(), material = new LineMaterial( { color: Math.random() * 0xffffff } ) ) {\n\n\t\tsuper( geometry, material );\n\n\t\tthis.isLineSegments2 = true;\n\n\t\tthis.type = 'LineSegments2';\n\n\t}\n\n\t// for backwards-compatibility, but could be a method of LineSegmentsGeometry...\n\n\tcomputeLineDistances() {\n\n\t\tconst geometry = this.geometry;\n\n\t\tconst instanceStart = geometry.attributes.instanceStart;\n\t\tconst instanceEnd = geometry.attributes.instanceEnd;\n\t\tconst lineDistances = new Float32Array( 2 * instanceStart.count );\n\n\t\tfor ( let i = 0, j = 0, l = instanceStart.count; i < l; i ++, j += 2 ) {\n\n\t\t\t_start.fromBufferAttribute( instanceStart, i );\n\t\t\t_end.fromBufferAttribute( instanceEnd, i );\n\n\t\t\tlineDistances[ j ] = ( j === 0 ) ? 0 : lineDistances[ j - 1 ];\n\t\t\tlineDistances[ j + 1 ] = lineDistances[ j ] + _start.distanceTo( _end );\n\n\t\t}\n\n\t\tconst instanceDistanceBuffer = new InstancedInterleavedBuffer( lineDistances, 2, 1 ); // d0, d1\n\n\t\tgeometry.setAttribute( 'instanceDistanceStart', new InterleavedBufferAttribute( instanceDistanceBuffer, 1, 0 ) ); // d0\n\t\tgeometry.setAttribute( 'instanceDistanceEnd', new InterleavedBufferAttribute( instanceDistanceBuffer, 1, 1 ) ); // d1\n\n\t\treturn this;\n\n\t}\n\n\traycast( raycaster, intersects ) {\n\n\t\tconst worldUnits = this.material.worldUnits;\n\t\tconst camera = raycaster.camera;\n\n\t\tif ( camera === null && ! worldUnits ) {\n\n\t\t\tconsole.error( 'LineSegments2: \"Raycaster.camera\" needs to be set in order to raycast against LineSegments2 while worldUnits is set to false.' );\n\n\t\t}\n\n\t\tconst threshold = ( raycaster.params.Line2 !== undefined ) ? raycaster.params.Line2.threshold || 0 : 0;\n\n\t\t_ray = raycaster.ray;\n\n\t\tconst matrixWorld = this.matrixWorld;\n\t\tconst geometry = this.geometry;\n\t\tconst material = this.material;\n\n\t\t_lineWidth = material.linewidth + threshold;\n\n\t\t// check if we intersect the sphere bounds\n\t\tif ( geometry.boundingSphere === null ) {\n\n\t\t\tgeometry.computeBoundingSphere();\n\n\t\t}\n\n\t\t_sphere.copy( geometry.boundingSphere ).applyMatrix4( matrixWorld );\n\n\t\t// increase the sphere bounds by the worst case line screen space width\n\t\tlet sphereMargin;\n\t\tif ( worldUnits ) {\n\n\t\t\tsphereMargin = _lineWidth * 0.5;\n\n\t\t} else {\n\n\t\t\tconst distanceToSphere = Math.max( camera.near, _sphere.distanceToPoint( _ray.origin ) );\n\t\t\tsphereMargin = getWorldSpaceHalfWidth( camera, distanceToSphere, material.resolution );\n\n\t\t}\n\n\t\t_sphere.radius += sphereMargin;\n\n\t\tif ( _ray.intersectsSphere( _sphere ) === false ) {\n\n\t\t\treturn;\n\n\t\t}\n\n\t\t// check if we intersect the box bounds\n\t\tif ( geometry.boundingBox === null ) {\n\n\t\t\tgeometry.computeBoundingBox();\n\n\t\t}\n\n\t\t_box.copy( geometry.boundingBox ).applyMatrix4( matrixWorld );\n\n\t\t// increase the box bounds by the worst case line width\n\t\tlet boxMargin;\n\t\tif ( worldUnits ) {\n\n\t\t\tboxMargin = _lineWidth * 0.5;\n\n\t\t} else {\n\n\t\t\tconst distanceToBox = Math.max( camera.near, _box.distanceToPoint( _ray.origin ) );\n\t\t\tboxMargin = getWorldSpaceHalfWidth( camera, distanceToBox, material.resolution );\n\n\t\t}\n\n\t\t_box.expandByScalar( boxMargin );\n\n\t\tif ( _ray.intersectsBox( _box ) === false ) {\n\n\t\t\treturn;\n\n\t\t}\n\n\t\tif ( worldUnits ) {\n\n\t\t\traycastWorldUnits( this, intersects );\n\n\t\t} else {\n\n\t\t\traycastScreenSpace( this, camera, intersects );\n\n\t\t}\n\n\t}\n\n\tonBeforeRender( renderer ) {\n\n\t\tconst uniforms = this.material.uniforms;\n\n\t\tif ( uniforms && uniforms.resolution ) {\n\n\t\t\trenderer.getViewport( _viewport );\n\t\t\tthis.material.uniforms.resolution.value.set( _viewport.z, _viewport.w );\n\n\t\t}\n\n\t}\n\n}\n\nexport { LineSegments2 };\n","import {\n\tBox3,\n\tFloat32BufferAttribute,\n\tInstancedBufferGeometry,\n\tInstancedInterleavedBuffer,\n\tInterleavedBufferAttribute,\n\tSphere,\n\tVector3,\n\tWireframeGeometry\n} from 'three';\n\nconst _box = new Box3();\nconst _vector = new Vector3();\n\nclass LineSegmentsGeometry extends InstancedBufferGeometry {\n\n\tconstructor() {\n\n\t\tsuper();\n\n\t\tthis.isLineSegmentsGeometry = true;\n\n\t\tthis.type = 'LineSegmentsGeometry';\n\n\t\tconst positions = [ - 1, 2, 0, 1, 2, 0, - 1, 1, 0, 1, 1, 0, - 1, 0, 0, 1, 0, 0, - 1, - 1, 0, 1, - 1, 0 ];\n\t\tconst uvs = [ - 1, 2, 1, 2, - 1, 1, 1, 1, - 1, - 1, 1, - 1, - 1, - 2, 1, - 2 ];\n\t\tconst index = [ 0, 2, 1, 2, 3, 1, 2, 4, 3, 4, 5, 3, 4, 6, 5, 6, 7, 5 ];\n\n\t\tthis.setIndex( index );\n\t\tthis.setAttribute( 'position', new Float32BufferAttribute( positions, 3 ) );\n\t\tthis.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );\n\n\t}\n\n\tapplyMatrix4( matrix ) {\n\n\t\tconst start = this.attributes.instanceStart;\n\t\tconst end = this.attributes.instanceEnd;\n\n\t\tif ( start !== undefined ) {\n\n\t\t\tstart.applyMatrix4( matrix );\n\n\t\t\tend.applyMatrix4( matrix );\n\n\t\t\tstart.needsUpdate = true;\n\n\t\t}\n\n\t\tif ( this.boundingBox !== null ) {\n\n\t\t\tthis.computeBoundingBox();\n\n\t\t}\n\n\t\tif ( this.boundingSphere !== null ) {\n\n\t\t\tthis.computeBoundingSphere();\n\n\t\t}\n\n\t\treturn this;\n\n\t}\n\n\tsetPositions( array ) {\n\n\t\tlet lineSegments;\n\n\t\tif ( array instanceof Float32Array ) {\n\n\t\t\tlineSegments = array;\n\n\t\t} else if ( Array.isArray( array ) ) {\n\n\t\t\tlineSegments = new Float32Array( array );\n\n\t\t}\n\n\t\tconst instanceBuffer = new InstancedInterleavedBuffer( lineSegments, 6, 1 ); // xyz, xyz\n\n\t\tthis.setAttribute( 'instanceStart', new InterleavedBufferAttribute( instanceBuffer, 3, 0 ) ); // xyz\n\t\tthis.setAttribute( 'instanceEnd', new InterleavedBufferAttribute( instanceBuffer, 3, 3 ) ); // xyz\n\n\t\t//\n\n\t\tthis.computeBoundingBox();\n\t\tthis.computeBoundingSphere();\n\n\t\treturn this;\n\n\t}\n\n\tsetColors( array ) {\n\n\t\tlet colors;\n\n\t\tif ( array instanceof Float32Array ) {\n\n\t\t\tcolors = array;\n\n\t\t} else if ( Array.isArray( array ) ) {\n\n\t\t\tcolors = new Float32Array( array );\n\n\t\t}\n\n\t\tconst instanceColorBuffer = new InstancedInterleavedBuffer( colors, 6, 1 ); // rgb, rgb\n\n\t\tthis.setAttribute( 'instanceColorStart', new InterleavedBufferAttribute( instanceColorBuffer, 3, 0 ) ); // rgb\n\t\tthis.setAttribute( 'instanceColorEnd', new InterleavedBufferAttribute( instanceColorBuffer, 3, 3 ) ); // rgb\n\n\t\treturn this;\n\n\t}\n\n\tfromWireframeGeometry( geometry ) {\n\n\t\tthis.setPositions( geometry.attributes.position.array );\n\n\t\treturn this;\n\n\t}\n\n\tfromEdgesGeometry( geometry ) {\n\n\t\tthis.setPositions( geometry.attributes.position.array );\n\n\t\treturn this;\n\n\t}\n\n\tfromMesh( mesh ) {\n\n\t\tthis.fromWireframeGeometry( new WireframeGeometry( mesh.geometry ) );\n\n\t\t// set colors, maybe\n\n\t\treturn this;\n\n\t}\n\n\tfromLineSegments( lineSegments ) {\n\n\t\tconst geometry = lineSegments.geometry;\n\n\t\tthis.setPositions( geometry.attributes.position.array ); // assumes non-indexed\n\n\t\t// set colors, maybe\n\n\t\treturn this;\n\n\t}\n\n\tcomputeBoundingBox() {\n\n\t\tif ( this.boundingBox === null ) {\n\n\t\t\tthis.boundingBox = new Box3();\n\n\t\t}\n\n\t\tconst start = this.attributes.instanceStart;\n\t\tconst end = this.attributes.instanceEnd;\n\n\t\tif ( start !== undefined && end !== undefined ) {\n\n\t\t\tthis.boundingBox.setFromBufferAttribute( start );\n\n\t\t\t_box.setFromBufferAttribute( end );\n\n\t\t\tthis.boundingBox.union( _box );\n\n\t\t}\n\n\t}\n\n\tcomputeBoundingSphere() {\n\n\t\tif ( this.boundingSphere === null ) {\n\n\t\t\tthis.boundingSphere = new Sphere();\n\n\t\t}\n\n\t\tif ( this.boundingBox === null ) {\n\n\t\t\tthis.computeBoundingBox();\n\n\t\t}\n\n\t\tconst start = this.attributes.instanceStart;\n\t\tconst end = this.attributes.instanceEnd;\n\n\t\tif ( start !== undefined && end !== undefined ) {\n\n\t\t\tconst center = this.boundingSphere.center;\n\n\t\t\tthis.boundingBox.getCenter( center );\n\n\t\t\tlet maxRadiusSq = 0;\n\n\t\t\tfor ( let i = 0, il = start.count; i < il; i ++ ) {\n\n\t\t\t\t_vector.fromBufferAttribute( start, i );\n\t\t\t\tmaxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( _vector ) );\n\n\t\t\t\t_vector.fromBufferAttribute( end, i );\n\t\t\t\tmaxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( _vector ) );\n\n\t\t\t}\n\n\t\t\tthis.boundingSphere.radius = Math.sqrt( maxRadiusSq );\n\n\t\t\tif ( isNaN( this.boundingSphere.radius ) ) {\n\n\t\t\t\tconsole.error( 'THREE.LineSegmentsGeometry.computeBoundingSphere(): Computed radius is NaN. The instanced position data is likely to have NaN values.', this );\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\ttoJSON() {\n\n\t\t// todo\n\n\t}\n\n\tapplyMatrix( matrix ) {\n\n\t\tconsole.warn( 'THREE.LineSegmentsGeometry: applyMatrix() has been renamed to applyMatrix4().' );\n\n\t\treturn this.applyMatrix4( matrix );\n\n\t}\n\n}\n\nexport { LineSegmentsGeometry };\n","import {\n\tShaderLib,\n\tShaderMaterial,\n\tUniformsLib,\n\tUniformsUtils,\n\tVector2,\n} from 'three';\n\nUniformsLib.line = {\n\n\tworldUnits: { value: 1 },\n\tlinewidth: { value: 1 },\n\tresolution: { value: new Vector2( 1, 1 ) },\n\tdashOffset: { value: 0 },\n\tdashScale: { value: 1 },\n\tdashSize: { value: 1 },\n\tgapSize: { value: 1 } // todo FIX - maybe change to totalSize\n\n};\n\nShaderLib[ 'line' ] = {\n\n\tuniforms: UniformsUtils.merge( [\n\t\tUniformsLib.common,\n\t\tUniformsLib.fog,\n\t\tUniformsLib.line\n\t] ),\n\n\tvertexShader:\n\t/* glsl */`\n\t\t#include \n\t\t#include \n\t\t#include \n\t\t#include \n\t\t#include \n\n\t\tuniform float linewidth;\n\t\tuniform vec2 resolution;\n\n\t\tattribute vec3 instanceStart;\n\t\tattribute vec3 instanceEnd;\n\n\t\tattribute vec3 instanceColorStart;\n\t\tattribute vec3 instanceColorEnd;\n\n\t\t#ifdef WORLD_UNITS\n\n\t\t\tvarying vec4 worldPos;\n\t\t\tvarying vec3 worldStart;\n\t\t\tvarying vec3 worldEnd;\n\n\t\t\t#ifdef USE_DASH\n\n\t\t\t\tvarying vec2 vUv;\n\n\t\t\t#endif\n\n\t\t#else\n\n\t\t\tvarying vec2 vUv;\n\n\t\t#endif\n\n\t\t#ifdef USE_DASH\n\n\t\t\tuniform float dashScale;\n\t\t\tattribute float instanceDistanceStart;\n\t\t\tattribute float instanceDistanceEnd;\n\t\t\tvarying float vLineDistance;\n\n\t\t#endif\n\n\t\tvoid trimSegment( const in vec4 start, inout vec4 end ) {\n\n\t\t\t// trim end segment so it terminates between the camera plane and the near plane\n\n\t\t\t// conservative estimate of the near plane\n\t\t\tfloat a = projectionMatrix[ 2 ][ 2 ]; // 3nd entry in 3th column\n\t\t\tfloat b = projectionMatrix[ 3 ][ 2 ]; // 3nd entry in 4th column\n\t\t\tfloat nearEstimate = - 0.5 * b / a;\n\n\t\t\tfloat alpha = ( nearEstimate - start.z ) / ( end.z - start.z );\n\n\t\t\tend.xyz = mix( start.xyz, end.xyz, alpha );\n\n\t\t}\n\n\t\tvoid main() {\n\n\t\t\t#ifdef USE_COLOR\n\n\t\t\t\tvColor.xyz = ( position.y < 0.5 ) ? instanceColorStart : instanceColorEnd;\n\n\t\t\t#endif\n\n\t\t\t#ifdef USE_DASH\n\n\t\t\t\tvLineDistance = ( position.y < 0.5 ) ? dashScale * instanceDistanceStart : dashScale * instanceDistanceEnd;\n\t\t\t\tvUv = uv;\n\n\t\t\t#endif\n\n\t\t\tfloat aspect = resolution.x / resolution.y;\n\n\t\t\t// camera space\n\t\t\tvec4 start = modelViewMatrix * vec4( instanceStart, 1.0 );\n\t\t\tvec4 end = modelViewMatrix * vec4( instanceEnd, 1.0 );\n\n\t\t\t#ifdef WORLD_UNITS\n\n\t\t\t\tworldStart = start.xyz;\n\t\t\t\tworldEnd = end.xyz;\n\n\t\t\t#else\n\n\t\t\t\tvUv = uv;\n\n\t\t\t#endif\n\n\t\t\t// special case for perspective projection, and segments that terminate either in, or behind, the camera plane\n\t\t\t// clearly the gpu firmware has a way of addressing this issue when projecting into ndc space\n\t\t\t// but we need to perform ndc-space calculations in the shader, so we must address this issue directly\n\t\t\t// perhaps there is a more elegant solution -- WestLangley\n\n\t\t\tbool perspective = ( projectionMatrix[ 2 ][ 3 ] == - 1.0 ); // 4th entry in the 3rd column\n\n\t\t\tif ( perspective ) {\n\n\t\t\t\tif ( start.z < 0.0 && end.z >= 0.0 ) {\n\n\t\t\t\t\ttrimSegment( start, end );\n\n\t\t\t\t} else if ( end.z < 0.0 && start.z >= 0.0 ) {\n\n\t\t\t\t\ttrimSegment( end, start );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// clip space\n\t\t\tvec4 clipStart = projectionMatrix * start;\n\t\t\tvec4 clipEnd = projectionMatrix * end;\n\n\t\t\t// ndc space\n\t\t\tvec3 ndcStart = clipStart.xyz / clipStart.w;\n\t\t\tvec3 ndcEnd = clipEnd.xyz / clipEnd.w;\n\n\t\t\t// direction\n\t\t\tvec2 dir = ndcEnd.xy - ndcStart.xy;\n\n\t\t\t// account for clip-space aspect ratio\n\t\t\tdir.x *= aspect;\n\t\t\tdir = normalize( dir );\n\n\t\t\t#ifdef WORLD_UNITS\n\n\t\t\t\tvec3 worldDir = normalize( end.xyz - start.xyz );\n\t\t\t\tvec3 tmpFwd = normalize( mix( start.xyz, end.xyz, 0.5 ) );\n\t\t\t\tvec3 worldUp = normalize( cross( worldDir, tmpFwd ) );\n\t\t\t\tvec3 worldFwd = cross( worldDir, worldUp );\n\t\t\t\tworldPos = position.y < 0.5 ? start: end;\n\n\t\t\t\t// height offset\n\t\t\t\tfloat hw = linewidth * 0.5;\n\t\t\t\tworldPos.xyz += position.x < 0.0 ? hw * worldUp : - hw * worldUp;\n\n\t\t\t\t// don't extend the line if we're rendering dashes because we\n\t\t\t\t// won't be rendering the endcaps\n\t\t\t\t#ifndef USE_DASH\n\n\t\t\t\t\t// cap extension\n\t\t\t\t\tworldPos.xyz += position.y < 0.5 ? - hw * worldDir : hw * worldDir;\n\n\t\t\t\t\t// add width to the box\n\t\t\t\t\tworldPos.xyz += worldFwd * hw;\n\n\t\t\t\t\t// endcaps\n\t\t\t\t\tif ( position.y > 1.0 || position.y < 0.0 ) {\n\n\t\t\t\t\t\tworldPos.xyz -= worldFwd * 2.0 * hw;\n\n\t\t\t\t\t}\n\n\t\t\t\t#endif\n\n\t\t\t\t// project the worldpos\n\t\t\t\tvec4 clip = projectionMatrix * worldPos;\n\n\t\t\t\t// shift the depth of the projected points so the line\n\t\t\t\t// segments overlap neatly\n\t\t\t\tvec3 clipPose = ( position.y < 0.5 ) ? ndcStart : ndcEnd;\n\t\t\t\tclip.z = clipPose.z * clip.w;\n\n\t\t\t#else\n\n\t\t\t\tvec2 offset = vec2( dir.y, - dir.x );\n\t\t\t\t// undo aspect ratio adjustment\n\t\t\t\tdir.x /= aspect;\n\t\t\t\toffset.x /= aspect;\n\n\t\t\t\t// sign flip\n\t\t\t\tif ( position.x < 0.0 ) offset *= - 1.0;\n\n\t\t\t\t// endcaps\n\t\t\t\tif ( position.y < 0.0 ) {\n\n\t\t\t\t\toffset += - dir;\n\n\t\t\t\t} else if ( position.y > 1.0 ) {\n\n\t\t\t\t\toffset += dir;\n\n\t\t\t\t}\n\n\t\t\t\t// adjust for linewidth\n\t\t\t\toffset *= linewidth;\n\n\t\t\t\t// adjust for clip-space to screen-space conversion // maybe resolution should be based on viewport ...\n\t\t\t\toffset /= resolution.y;\n\n\t\t\t\t// select end\n\t\t\t\tvec4 clip = ( position.y < 0.5 ) ? clipStart : clipEnd;\n\n\t\t\t\t// back to clip space\n\t\t\t\toffset *= clip.w;\n\n\t\t\t\tclip.xy += offset;\n\n\t\t\t#endif\n\n\t\t\tgl_Position = clip;\n\n\t\t\tvec4 mvPosition = ( position.y < 0.5 ) ? start : end; // this is an approximation\n\n\t\t\t#include \n\t\t\t#include \n\t\t\t#include \n\n\t\t}\n\t\t`,\n\n\tfragmentShader:\n\t/* glsl */`\n\t\tuniform vec3 diffuse;\n\t\tuniform float opacity;\n\t\tuniform float linewidth;\n\n\t\t#ifdef USE_DASH\n\n\t\t\tuniform float dashOffset;\n\t\t\tuniform float dashSize;\n\t\t\tuniform float gapSize;\n\n\t\t#endif\n\n\t\tvarying float vLineDistance;\n\n\t\t#ifdef WORLD_UNITS\n\n\t\t\tvarying vec4 worldPos;\n\t\t\tvarying vec3 worldStart;\n\t\t\tvarying vec3 worldEnd;\n\n\t\t\t#ifdef USE_DASH\n\n\t\t\t\tvarying vec2 vUv;\n\n\t\t\t#endif\n\n\t\t#else\n\n\t\t\tvarying vec2 vUv;\n\n\t\t#endif\n\n\t\t#include \n\t\t#include \n\t\t#include \n\t\t#include \n\t\t#include \n\n\t\tvec2 closestLineToLine(vec3 p1, vec3 p2, vec3 p3, vec3 p4) {\n\n\t\t\tfloat mua;\n\t\t\tfloat mub;\n\n\t\t\tvec3 p13 = p1 - p3;\n\t\t\tvec3 p43 = p4 - p3;\n\n\t\t\tvec3 p21 = p2 - p1;\n\n\t\t\tfloat d1343 = dot( p13, p43 );\n\t\t\tfloat d4321 = dot( p43, p21 );\n\t\t\tfloat d1321 = dot( p13, p21 );\n\t\t\tfloat d4343 = dot( p43, p43 );\n\t\t\tfloat d2121 = dot( p21, p21 );\n\n\t\t\tfloat denom = d2121 * d4343 - d4321 * d4321;\n\n\t\t\tfloat numer = d1343 * d4321 - d1321 * d4343;\n\n\t\t\tmua = numer / denom;\n\t\t\tmua = clamp( mua, 0.0, 1.0 );\n\t\t\tmub = ( d1343 + d4321 * ( mua ) ) / d4343;\n\t\t\tmub = clamp( mub, 0.0, 1.0 );\n\n\t\t\treturn vec2( mua, mub );\n\n\t\t}\n\n\t\tvoid main() {\n\n\t\t\t#include \n\n\t\t\t#ifdef USE_DASH\n\n\t\t\t\tif ( vUv.y < - 1.0 || vUv.y > 1.0 ) discard; // discard endcaps\n\n\t\t\t\tif ( mod( vLineDistance + dashOffset, dashSize + gapSize ) > dashSize ) discard; // todo - FIX\n\n\t\t\t#endif\n\n\t\t\tfloat alpha = opacity;\n\n\t\t\t#ifdef WORLD_UNITS\n\n\t\t\t\t// Find the closest points on the view ray and the line segment\n\t\t\t\tvec3 rayEnd = normalize( worldPos.xyz ) * 1e5;\n\t\t\t\tvec3 lineDir = worldEnd - worldStart;\n\t\t\t\tvec2 params = closestLineToLine( worldStart, worldEnd, vec3( 0.0, 0.0, 0.0 ), rayEnd );\n\n\t\t\t\tvec3 p1 = worldStart + lineDir * params.x;\n\t\t\t\tvec3 p2 = rayEnd * params.y;\n\t\t\t\tvec3 delta = p1 - p2;\n\t\t\t\tfloat len = length( delta );\n\t\t\t\tfloat norm = len / linewidth;\n\n\t\t\t\t#ifndef USE_DASH\n\n\t\t\t\t\t#ifdef USE_ALPHA_TO_COVERAGE\n\n\t\t\t\t\t\tfloat dnorm = fwidth( norm );\n\t\t\t\t\t\talpha = 1.0 - smoothstep( 0.5 - dnorm, 0.5 + dnorm, norm );\n\n\t\t\t\t\t#else\n\n\t\t\t\t\t\tif ( norm > 0.5 ) {\n\n\t\t\t\t\t\t\tdiscard;\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t#endif\n\n\t\t\t\t#endif\n\n\t\t\t#else\n\n\t\t\t\t#ifdef USE_ALPHA_TO_COVERAGE\n\n\t\t\t\t\t// artifacts appear on some hardware if a derivative is taken within a conditional\n\t\t\t\t\tfloat a = vUv.x;\n\t\t\t\t\tfloat b = ( vUv.y > 0.0 ) ? vUv.y - 1.0 : vUv.y + 1.0;\n\t\t\t\t\tfloat len2 = a * a + b * b;\n\t\t\t\t\tfloat dlen = fwidth( len2 );\n\n\t\t\t\t\tif ( abs( vUv.y ) > 1.0 ) {\n\n\t\t\t\t\t\talpha = 1.0 - smoothstep( 1.0 - dlen, 1.0 + dlen, len2 );\n\n\t\t\t\t\t}\n\n\t\t\t\t#else\n\n\t\t\t\t\tif ( abs( vUv.y ) > 1.0 ) {\n\n\t\t\t\t\t\tfloat a = vUv.x;\n\t\t\t\t\t\tfloat b = ( vUv.y > 0.0 ) ? vUv.y - 1.0 : vUv.y + 1.0;\n\t\t\t\t\t\tfloat len2 = a * a + b * b;\n\n\t\t\t\t\t\tif ( len2 > 1.0 ) discard;\n\n\t\t\t\t\t}\n\n\t\t\t\t#endif\n\n\t\t\t#endif\n\n\t\t\tvec4 diffuseColor = vec4( diffuse, alpha );\n\n\t\t\t#include \n\t\t\t#include \n\n\t\t\tgl_FragColor = vec4( diffuseColor.rgb, alpha );\n\n\t\t\t#include \n\t\t\t#include \n\t\t\t#include \n\t\t\t#include \n\n\t\t}\n\t\t`\n};\n\nclass LineMaterial extends ShaderMaterial {\n\n\tconstructor( parameters ) {\n\n\t\tsuper( {\n\n\t\t\ttype: 'LineMaterial',\n\n\t\t\tuniforms: UniformsUtils.clone( ShaderLib[ 'line' ].uniforms ),\n\n\t\t\tvertexShader: ShaderLib[ 'line' ].vertexShader,\n\t\t\tfragmentShader: ShaderLib[ 'line' ].fragmentShader,\n\n\t\t\tclipping: true // required for clipping support\n\n\t\t} );\n\n\t\tthis.isLineMaterial = true;\n\n\t\tthis.setValues( parameters );\n\n\t}\n\n\tget color() {\n\n\t\treturn this.uniforms.diffuse.value;\n\n\t}\n\n\tset color( value ) {\n\n\t\tthis.uniforms.diffuse.value = value;\n\n\t}\n\n\tget worldUnits() {\n\n\t\treturn 'WORLD_UNITS' in this.defines;\n\n\t}\n\n\tset worldUnits( value ) {\n\n\t\tif ( value === true ) {\n\n\t\t\tthis.defines.WORLD_UNITS = '';\n\n\t\t} else {\n\n\t\t\tdelete this.defines.WORLD_UNITS;\n\n\t\t}\n\n\t}\n\n\tget linewidth() {\n\n\t\treturn this.uniforms.linewidth.value;\n\n\t}\n\n\tset linewidth( value ) {\n\n\t\tif ( ! this.uniforms.linewidth ) return;\n\t\tthis.uniforms.linewidth.value = value;\n\n\t}\n\n\tget dashed() {\n\n\t\treturn 'USE_DASH' in this.defines;\n\n\t}\n\n\tset dashed( value ) {\n\n\t\tif ( ( value === true ) !== this.dashed ) {\n\n\t\t\tthis.needsUpdate = true;\n\n\t\t}\n\n\t\tif ( value === true ) {\n\n\t\t\tthis.defines.USE_DASH = '';\n\n\t\t} else {\n\n\t\t\tdelete this.defines.USE_DASH;\n\n\t\t}\n\n\t}\n\n\tget dashScale() {\n\n\t\treturn this.uniforms.dashScale.value;\n\n\t}\n\n\tset dashScale( value ) {\n\n\t\tthis.uniforms.dashScale.value = value;\n\n\t}\n\n\tget dashSize() {\n\n\t\treturn this.uniforms.dashSize.value;\n\n\t}\n\n\tset dashSize( value ) {\n\n\t\tthis.uniforms.dashSize.value = value;\n\n\t}\n\n\tget dashOffset() {\n\n\t\treturn this.uniforms.dashOffset.value;\n\n\t}\n\n\tset dashOffset( value ) {\n\n\t\tthis.uniforms.dashOffset.value = value;\n\n\t}\n\n\tget gapSize() {\n\n\t\treturn this.uniforms.gapSize.value;\n\n\t}\n\n\tset gapSize( value ) {\n\n\t\tthis.uniforms.gapSize.value = value;\n\n\t}\n\n\tget opacity() {\n\n\t\treturn this.uniforms.opacity.value;\n\n\t}\n\n\tset opacity( value ) {\n\n\t\tif ( ! this.uniforms ) return;\n\t\tthis.uniforms.opacity.value = value;\n\n\t}\n\n\tget resolution() {\n\n\t\treturn this.uniforms.resolution.value;\n\n\t}\n\n\tset resolution( value ) {\n\n\t\tthis.uniforms.resolution.value.copy( value );\n\n\t}\n\n\tget alphaToCoverage() {\n\n\t\treturn 'USE_ALPHA_TO_COVERAGE' in this.defines;\n\n\t}\n\n\tset alphaToCoverage( value ) {\n\n\t\tif ( ! this.defines ) return;\n\n\t\tif ( ( value === true ) !== this.alphaToCoverage ) {\n\n\t\t\tthis.needsUpdate = true;\n\n\t\t}\n\n\t\tif ( value === true ) {\n\n\t\t\tthis.defines.USE_ALPHA_TO_COVERAGE = '';\n\n\t\t} else {\n\n\t\t\tdelete this.defines.USE_ALPHA_TO_COVERAGE;\n\n\t\t}\n\n\t}\n\n}\n\nexport { LineMaterial };\n","import { BufferAttribute,\n\t\t BufferGeometry,\n\t\t Int32BufferAttribute,\n\t\t Points } from 'three';\n\nexport class CityObjectsPoints extends Points {\n\n\tconstructor( citymodel, vertices, geometryData, matrix, material ) {\n\n\t\tconst geom = new BufferGeometry();\n\n\t\tconst vertexArray = new Float32Array( vertices );\n\t\tgeom.setAttribute( 'position', new BufferAttribute( vertexArray, 3 ) );\n\t\tconst idsArray = new Uint16Array( geometryData.objectIds );\n\t\tgeom.setAttribute( 'objectid', new BufferAttribute( idsArray, 1 ) );\n\t\tconst typeArray = new Uint8Array( geometryData.objectType );\n\t\tgeom.setAttribute( 'type', new Int32BufferAttribute( typeArray, 1 ) );\n\t\tconst surfaceTypeArray = new Int8Array( geometryData.semanticSurfaces );\n\t\tgeom.setAttribute( 'surfacetype', new Int32BufferAttribute( surfaceTypeArray, 1 ) );\n\t\tconst geomIdsArray = new Float32Array( geometryData.geometryIds );\n\t\tgeom.setAttribute( 'geometryid', new BufferAttribute( geomIdsArray, 1 ) );\n\t\tconst lodIdsArray = new Int8Array( geometryData.lodIds );\n\t\tgeom.setAttribute( 'lodid', new BufferAttribute( lodIdsArray, 1 ) );\n\t\tconst boundaryIdsArray = new Float32Array( geometryData.boundaryIds );\n\t\tgeom.setAttribute( 'boundaryid', new BufferAttribute( boundaryIdsArray, 1 ) );\n\n\t\tgeom.attributes.position.needsUpdate = true;\n\n\t\tif ( matrix ) {\n\n\t\t\tgeom.applyMatrix4( matrix );\n\n\t\t}\n\n\t\tgeom.computeVertexNormals();\n\n\t\tsuper( geom, material );\n\n\t\tthis.citymodel = citymodel;\n\n\t\tthis.isCityObject = true;\n\t\tthis.isCityObjectPoints = true;\n\n\t}\n\n\tgetIntersectionVertex( intersection ) {\n\n\t\treturn intersection.index;\n\n\t}\n\n\tresolveIntersectionInfo( intersection ) {\n\n\t\tconst intersectionInfo = {};\n\n\t\tconst vertexIdx = this.getIntersectionVertex( intersection );\n\n\t\tconst idx = this.geometry.getAttribute( 'objectid' ).getX( vertexIdx );\n\n\t\tintersectionInfo.vertexIndex = vertexIdx;\n\t\tintersectionInfo.objectIndex = idx;\n\n\t\tintersectionInfo.objectId = Object.keys( this.citymodel.CityObjects )[ idx ];\n\t\tintersectionInfo.geometryIndex = this.geometry.getAttribute( 'geometryid' ).getX( vertexIdx );\n\t\tintersectionInfo.boundaryIndex = this.geometry.getAttribute( 'boundaryid' ).getX( vertexIdx );\n\n\t\tintersectionInfo.objectTypeIndex = this.geometry.getAttribute( 'type' ).getX( vertexIdx );\n\t\tintersectionInfo.surfaceTypeIndex = this.geometry.getAttribute( 'surfacetype' ).getX( vertexIdx );\n\t\tintersectionInfo.lodIndex = this.geometry.getAttribute( 'lodid' ).getX( vertexIdx );\n\n\t\treturn intersectionInfo;\n\n\t}\n\n}\n","import { ShaderChunk, ShaderLib,\n\t\t UniformsLib,\n\t\t UniformsUtils } from \"three\";\nimport 'three/examples/jsm/lines/LineMaterial';\nimport { CityObjectsBaseMaterial } from \"./CityObjectsBaseMaterial\";\n\nexport class CityObjectsLineMaterial extends CityObjectsBaseMaterial {\n\n\tconstructor( parameters ) {\n\n\t\tconst shader = ShaderLib[ 'line' ];\n\n\t\tconst newShader = { ...shader };\n\t\tnewShader.uniforms = {\n\t\t\t...UniformsLib.cityobject,\n\t\t\t...UniformsUtils.clone( shader.uniforms ),\n\t\t};\n\t\tnewShader.extensions = {\n\t\t\tderivatives: true,\n\t\t};\n\t\tnewShader.lights = false;\n\t\tnewShader.vertexShader =\n\t\tShaderChunk.cityobjectinclude_vertex +\n\t\tnewShader.vertexShader.replace(\n\t\t\t/#include /,\n\t\t\t`\n\t\t\t#include \n\t\t\t`\n\t\t\t+ ShaderChunk.cityobjectdiffuse_vertex\n\t\t\t+ ShaderChunk.cityobjectshowlod_vertex\n\t\t);\n\t\tnewShader.fragmentShader =\n\t\t`\n\t\t\tvarying vec3 diffuse_;\n\t\t\tvarying float discard_;\n\t\t` +\n\t\tnewShader.fragmentShader.replace(\n\t\t\t/vec4 diffuseColor = vec4\\( diffuse, alpha \\);/,\n\t\t\t`\n\t\t\tvec4 diffuseColor = vec4( diffuse_, alpha );\n\n\t\t\t#ifdef SHOW_LOD\n\n\t\t\t\tif ( discard_ > 0.0 ) {\n\t\t\t\t\tdiscard;\n\t\t\t\t}\n\t\t\t\n\t\t\t#endif\n\t\t\t`\n\t\t);\n\n\t\tsuper( newShader );\n\n\t\tObject.defineProperties( this, {\n\n\t\t\tcolor: {\n\n\t\t\t\tenumerable: true,\n\n\t\t\t\tget: function () {\n\n\t\t\t\t\treturn this.uniforms.diffuse.value;\n\n\t\t\t\t},\n\n\t\t\t\tset: function ( value ) {\n\n\t\t\t\t\tthis.uniforms.diffuse.value = value;\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\tworldUnits: {\n\n\t\t\t\tenumerable: true,\n\n\t\t\t\tget: function () {\n\n\t\t\t\t\treturn 'WORLD_UNITS' in this.defines;\n\n\t\t\t\t},\n\n\t\t\t\tset: function ( value ) {\n\n\t\t\t\t\tif ( value === true ) {\n\n\t\t\t\t\t\tthis.defines.WORLD_UNITS = '';\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tdelete this.defines.WORLD_UNITS;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\tlinewidth: {\n\n\t\t\t\tenumerable: true,\n\n\t\t\t\tget: function () {\n\n\t\t\t\t\treturn this.uniforms.linewidth.value;\n\n\t\t\t\t},\n\n\t\t\t\tset: function ( value ) {\n\n\t\t\t\t\tthis.uniforms.linewidth.value = value;\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\tdashed: {\n\n\t\t\t\tenumerable: true,\n\n\t\t\t\tget: function () {\n\n\t\t\t\t\treturn Boolean( 'USE_DASH' in this.defines );\n\n\t\t\t\t},\n\n\t\t\t\tset( value ) {\n\n\t\t\t\t\tif ( Boolean( value ) !== Boolean( 'USE_DASH' in this.defines ) ) {\n\n\t\t\t\t\t\tthis.needsUpdate = true;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( value === true ) {\n\n\t\t\t\t\t\tthis.defines.USE_DASH = '';\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tdelete this.defines.USE_DASH;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\tdashScale: {\n\n\t\t\t\tenumerable: true,\n\n\t\t\t\tget: function () {\n\n\t\t\t\t\treturn this.uniforms.dashScale.value;\n\n\t\t\t\t},\n\n\t\t\t\tset: function ( value ) {\n\n\t\t\t\t\tthis.uniforms.dashScale.value = value;\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\tdashSize: {\n\n\t\t\t\tenumerable: true,\n\n\t\t\t\tget: function () {\n\n\t\t\t\t\treturn this.uniforms.dashSize.value;\n\n\t\t\t\t},\n\n\t\t\t\tset: function ( value ) {\n\n\t\t\t\t\tthis.uniforms.dashSize.value = value;\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\tdashOffset: {\n\n\t\t\t\tenumerable: true,\n\n\t\t\t\tget: function () {\n\n\t\t\t\t\treturn this.uniforms.dashOffset.value;\n\n\t\t\t\t},\n\n\t\t\t\tset: function ( value ) {\n\n\t\t\t\t\tthis.uniforms.dashOffset.value = value;\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\tgapSize: {\n\n\t\t\t\tenumerable: true,\n\n\t\t\t\tget: function () {\n\n\t\t\t\t\treturn this.uniforms.gapSize.value;\n\n\t\t\t\t},\n\n\t\t\t\tset: function ( value ) {\n\n\t\t\t\t\tthis.uniforms.gapSize.value = value;\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\topacity: {\n\n\t\t\t\tenumerable: true,\n\n\t\t\t\tget: function () {\n\n\t\t\t\t\treturn this.uniforms.opacity.value;\n\n\t\t\t\t},\n\n\t\t\t\tset: function ( value ) {\n\n\t\t\t\t\tthis.uniforms.opacity.value = value;\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\tresolution: {\n\n\t\t\t\tenumerable: true,\n\n\t\t\t\tget: function () {\n\n\t\t\t\t\treturn this.uniforms.resolution.value;\n\n\t\t\t\t},\n\n\t\t\t\tset: function ( value ) {\n\n\t\t\t\t\tthis.uniforms.resolution.value.copy( value );\n\n\t\t\t\t}\n\n\t\t\t},\n\n\t\t\talphaToCoverage: {\n\n\t\t\t\tenumerable: true,\n\n\t\t\t\tget: function () {\n\n\t\t\t\t\treturn Boolean( 'USE_ALPHA_TO_COVERAGE' in this.defines );\n\n\t\t\t\t},\n\n\t\t\t\tset: function ( value ) {\n\n\t\t\t\t\tif ( Boolean( value ) !== Boolean( 'USE_ALPHA_TO_COVERAGE' in this.defines ) ) {\n\n\t\t\t\t\t\tthis.needsUpdate = true;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tif ( value === true ) {\n\n\t\t\t\t\t\tthis.defines.USE_ALPHA_TO_COVERAGE = '';\n\t\t\t\t\t\tthis.extensions.derivatives = true;\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tdelete this.defines.USE_ALPHA_TO_COVERAGE;\n\t\t\t\t\t\tthis.extensions.derivatives = false;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t} );\n\n\t\tthis.setValues( parameters );\n\n\t}\n\n}\n","import { ShaderChunk,\n\t\t ShaderLib,\n\t\t UniformsLib,\n\t\t UniformsUtils } from \"three\";\nimport 'three/examples/jsm/lines/LineMaterial';\nimport { CityObjectsBaseMaterial } from \"./CityObjectsBaseMaterial\";\n\nexport class CityObjectsPointsMaterial extends CityObjectsBaseMaterial {\n\n\tconstructor( parameters ) {\n\n\t\tconst shader = ShaderLib.points;\n\n\t\tconst newShader = { ...shader };\n\t\tnewShader.uniforms = {\n\t\t\t...UniformsLib.cityobject,\n\t\t\t...UniformsUtils.clone( shader.uniforms ),\n\t\t};\n\t\tnewShader.extensions = {\n\t\t\tderivatives: true,\n\t\t};\n\t\tnewShader.lights = false;\n\t\tnewShader.vertexShader =\n\t\tShaderChunk.cityobjectinclude_vertex +\n\t\tnewShader.vertexShader.replace(\n\t\t\t/#include /,\n\t\t\t`\n\t\t\t#include \n\t\t\t`\n\t\t\t+ ShaderChunk.cityobjectdiffuse_vertex\n\t\t\t+ ShaderChunk.cityobjectshowlod_vertex\n\t\t);\n\t\tnewShader.fragmentShader =\n\t\t`\n\t\t\tvarying vec3 diffuse_;\n\t\t\tvarying float discard_;\n\t\t` +\n\t\tnewShader.fragmentShader.replace(\n\t\t\t/vec4 diffuseColor = vec4\\( diffuse, opacity \\);/,\n\t\t\t`\n\t\t\tvec4 diffuseColor = vec4( diffuse_, opacity );\n\n\t\t\t#ifdef SHOW_LOD\n\n\t\t\t\tif ( discard_ > 0.0 ) {\n\t\t\t\t\tdiscard;\n\t\t\t\t}\n\t\t\t\n\t\t\t#endif\n\t\t\t`\n\t\t);\n\n\t\tsuper( newShader, parameters );\n\n\t\tthis.setValues( parameters );\n\n\t}\n\n\tget size() {\n\n\t\treturn this.uniforms.size.value;\n\n\t}\n\n\tset size( value ) {\n\n\t\tthis.uniforms.size.value = value;\n\n\t}\n\n\tget sizeAttenuation() {\n\n\t\treturn Boolean( 'USE_SIZEATTENUATION' in this.defines );\n\n\t}\n\n\tset sizeAttenuation( value ) {\n\n\t\tif ( Boolean( value ) !== Boolean( 'USE_SIZEATTENUATION' in this.defines ) ) {\n\n\t\t\tthis.needsUpdate = true;\n\n\t\t}\n\n\t\tif ( value === true ) {\n\n\t\t\tthis.defines.USE_SIZEATTENUATION = '';\n\n\t\t} else {\n\n\t\t\tdelete this.defines.USE_SIZEATTENUATION;\n\n\t\t}\n\n\t}\n\n}\n","import {\n\tVector3\n} from 'three';\nimport earcut from 'earcut';\n\nimport { TRIANGLES, GeometryData } from './GeometryData.js';\nimport { BaseParser } from './BaseParser.js';\n\nexport class TriangleParser extends BaseParser {\n\n\tconstructor( json, objectIds, objectColors, vertices ) {\n\n\t\tsuper( json, objectIds, objectColors );\n\n\t\tif ( vertices ) {\n\n\t\t\tthis.vertices = vertices;\n\n\t\t} else {\n\n\t\t\tthis.vertices = this.json.vertices;\n\n\t\t}\n\n\t\tthis.geomData = new GeometryData( TRIANGLES );\n\n\t}\n\n\tclean() {\n\n\t\tthis.geomData = new GeometryData( TRIANGLES );\n\n\t}\n\n\t/**\n\t * Flattens the given geometry, meaning that a Solid or MultiSolid will be\n\t * basically converted to a MultiSuface\n\t */\n\tflattenGeometry( geometry ) {\n\n\t\tconst geometryType = geometry.type;\n\n\t\tif ( geometryType == \"MultiSurface\" || geometryType == \"CompositeSurface\" ) {\n\n\t\t\treturn geometry;\n\n\t\t}\n\n\t\tif ( geometryType == \"Solid\" ) {\n\n\t\t\tconst newGeometry = Object.assign( {}, geometry );\n\n\t\t\tnewGeometry.boundaries = geometry.boundaries.flat( 1 );\n\n\t\t\tif ( geometry.semantics ) {\n\n\t\t\t\tnewGeometry.semantics.values = geometry.semantics.values.flat( 1 );\n\n\t\t\t}\n\n\t\t\tif ( geometry.material ) {\n\n\t\t\t\tfor ( const theme in geometry.material ) {\n\n\t\t\t\t\tnewGeometry.material[ theme ].values = geometry.material[ theme ].values.flat( 1 );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tif ( geometry.texture ) {\n\n\t\t\t\tfor ( const theme in geometry.texture ) {\n\n\t\t\t\t\tnewGeometry.texture[ theme ].values = geometry.texture[ theme ].values.flat( 1 );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\treturn newGeometry;\n\n\t\t}\n\n\t\tif ( geometryType == \"MultiSolid\" || geometryType == \"CompositeSolid\" ) {\n\n\t\t\tconst newGeometry = Object.assign( {}, geometry );\n\n\t\t\tnewGeometry.boundaries = geometry.boundaries.flat( 2 );\n\n\t\t\tif ( geometry.semantics ) {\n\n\t\t\t\tnewGeometry.semantics.values = geometry.semantics.values.flat( 2 );\n\n\t\t\t}\n\n\t\t\tif ( geometry.material ) {\n\n\t\t\t\tfor ( const theme in geometry.material ) {\n\n\t\t\t\t\tnewGeometry.material[ theme ].values = geometry.material[ theme ].values.flat( 2 );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tif ( geometry.texture ) {\n\n\t\t\t\tfor ( const theme in geometry.texture ) {\n\n\t\t\t\t\tnewGeometry.texture[ theme ].values = geometry.texture[ theme ].values.flat( 2 );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\treturn newGeometry;\n\n\t\t}\n\n\t}\n\n\tparseGeometry( geometry, objectId, geomIdx ) {\n\n\t\tconst cityObj = this.json.CityObjects[ objectId ];\n\n\t\tconst idIdx = cityObj ? this.getObjectIdx( objectId ) : - 1;\n\t\tconst objType = cityObj ? this.getObjectTypeIdx( cityObj.type ) : - 1;\n\t\tconst lodIdx = this.getLodIndex( geometry.lod );\n\n\t\t// We flatten the geometry to a MultiSurface, basically, so that it's\n\t\t// easily parsable.\n\t\tconst flatGeometry = this.flattenGeometry( geometry );\n\n\t\tif ( flatGeometry ) {\n\n\t\t\tthis.parseShell( flatGeometry, idIdx, objType, geomIdx, lodIdx );\n\n\t\t}\n\n\n\t}\n\n\tparseShell( geometry, idIdx, objType, geomIdx, lodIdx ) {\n\n\t\tconst boundaries = geometry.boundaries;\n\t\tconst semantics = geometry.semantics ? geometry.semantics.values : [];\n\t\tconst surfaces = geometry.semantics ? geometry.semantics.surfaces : [];\n\t\tconst material = geometry.material ? geometry.material : {};\n\t\tconst texture = geometry.texture ? geometry.texture : {};\n\n\t\t// Contains the boundary but with the right verticeId\n\t\tfor ( let i = 0; i < boundaries.length; i ++ ) {\n\n\t\t\tlet boundary = [];\n\t\t\tlet holes = [];\n\n\t\t\tconst surfaceType = this.getSurfaceTypeIdx( i, semantics, surfaces );\n\t\t\tconst materialValue = this.getSurfaceMaterials( i, material );\n\n\t\t\tfor ( let j = 0; j < boundaries[ i ].length; j ++ ) {\n\n\t\t\t\tif ( boundary.length > 0 ) {\n\n\t\t\t\t\tholes.push( boundary.length );\n\n\t\t\t\t}\n\n\t\t\t\t// const new_boundary = this.extractLocalIndices( geom, boundaries[ i ][ j ], vertices, json );\n\t\t\t\t// boundary.push( ...new_boundary );\n\t\t\t\tboundary.push( ...boundaries[ i ][ j ] );\n\n\t\t\t}\n\n\t\t\tif ( boundary.length == 3 ) {\n\n\t\t\t\tfor ( let n = 0; n < 3; n ++ ) {\n\n\t\t\t\t\tthis.geomData.addVertex( boundary[ n ],\n\t\t\t\t\t\t\t\t\t\t\t idIdx,\n\t\t\t\t\t\t\t\t\t\t\t objType,\n\t\t\t\t\t\t\t\t\t\t\t surfaceType,\n\t\t\t\t\t\t\t\t\t\t\t geomIdx,\n\t\t\t\t\t\t\t\t\t\t\t i,\n\t\t\t\t\t\t\t\t\t\t\t lodIdx,\n\t\t\t\t\t\t\t\t\t\t\t materialValue,\n\t\t\t\t\t\t\t\t\t\t\t this.getTextureData( i, n, holes, texture ) );\n\n\t\t\t\t}\n\n\n\t\t\t} else if ( boundary.length > 3 ) {\n\n\t\t\t\t//create list of points\n\t\t\t\tlet pList = [];\n\t\t\t\tfor ( let k = 0; k < boundary.length; k ++ ) {\n\n\t\t\t\t\tpList.push( {\n\t\t\t\t\t\tx: this.vertices[ boundary[ k ] ][ 0 ],\n\t\t\t\t\t\ty: this.vertices[ boundary[ k ] ][ 1 ],\n\t\t\t\t\t\tz: this.vertices[ boundary[ k ] ][ 2 ]\n\t\t\t\t\t} );\n\n\t\t\t\t}\n\n\t\t\t\t//get normal of these points\n\t\t\t\tconst normal = this.getNewellsNormal( pList );\n\n\t\t\t\t//convert to 2d (for triangulation)\n\t\t\t\tlet pv = [];\n\t\t\t\tfor ( let k = 0; k < pList.length; k ++ ) {\n\n\t\t\t\t\tconst re = this.to_2d( pList[ k ], normal );\n\t\t\t\t\tpv.push( re.x );\n\t\t\t\t\tpv.push( re.y );\n\n\t\t\t\t}\n\n\t\t\t\t//triangulate\n\t\t\t\tconst tr = earcut( pv, holes, 2 );\n\n\t\t\t\t// create faces based on triangulation\n\t\t\t\tfor ( let k = 0; k < tr.length; k += 3 ) {\n\n\t\t\t\t\tfor ( let n = 0; n < 3; n ++ ) {\n\n\t\t\t\t\t\tconst vertex = boundary[ tr[ k + n ] ];\n\n\t\t\t\t\t\tthis.geomData.addVertex( vertex,\n\t\t\t\t\t\t\t\t\t\t\t \t idIdx,\n\t\t\t\t\t\t\t\t\t\t\t\t objType,\n\t\t\t\t\t\t\t\t\t\t\t\t surfaceType,\n\t\t\t\t\t\t\t\t\t\t\t\t geomIdx,\n\t\t\t\t\t\t\t\t\t\t\t\t i,\n\t\t\t\t\t\t\t\t\t\t\t\t lodIdx,\n\t\t\t\t\t\t\t\t\t\t\t\t materialValue,\n\t\t\t\t\t\t\t\t\t\t\t\t this.getTextureData( i, tr[ k + n ], holes, texture ) );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\tgetNewellsNormal( indices ) {\n\n\t\t// find normal with Newell's method\n\t\tlet n = [ 0.0, 0.0, 0.0 ];\n\n\t\tfor ( let i = 0; i < indices.length; i ++ ) {\n\n\t\t\tlet nex = i + 1;\n\n\t\t\tif ( nex == indices.length ) {\n\n\t\t\t\tnex = 0;\n\n\t\t\t}\n\n\t\t\tn[ 0 ] = n[ 0 ] + ( ( indices[ i ].y - indices[ nex ].y ) * ( indices[ i ].z + indices[ nex ].z ) );\n\t\t\tn[ 1 ] = n[ 1 ] + ( ( indices[ i ].z - indices[ nex ].z ) * ( indices[ i ].x + indices[ nex ].x ) );\n\t\t\tn[ 2 ] = n[ 2 ] + ( ( indices[ i ].x - indices[ nex ].x ) * ( indices[ i ].y + indices[ nex ].y ) );\n\n\t\t}\n\n\t\tlet b = new Vector3( n[ 0 ], n[ 1 ], n[ 2 ] );\n\t\treturn ( b.normalize() );\n\n\t}\n\n\tto_2d( p, n ) {\n\n\t\tp = new Vector3( p.x, p.y, p.z );\n\t\tlet x3 = new Vector3( 1.1, 1.1, 1.1 );\n\t\tif ( x3.distanceTo( n ) < 0.01 ) {\n\n\t\t\tx3.add( new Vector3( 1.0, 2.0, 3.0 ) );\n\n\t\t}\n\n\t\tlet tmp = x3.dot( n );\n\t\tlet tmp2 = n.clone();\n\t\ttmp2.multiplyScalar( tmp );\n\t\tx3.sub( tmp2 );\n\t\tx3.normalize();\n\t\tlet y3 = n.clone();\n\t\ty3.cross( x3 );\n\t\tlet x = p.dot( x3 );\n\t\tlet y = p.dot( y3 );\n\t\tlet re = { x: x, y: y };\n\t\treturn re;\n\n\t}\n\n}\n","'use strict';\n\nmodule.exports = earcut;\nmodule.exports.default = earcut;\n\nfunction earcut(data, holeIndices, dim) {\n\n dim = dim || 2;\n\n var hasHoles = holeIndices && holeIndices.length,\n outerLen = hasHoles ? holeIndices[0] * dim : data.length,\n outerNode = linkedList(data, 0, outerLen, dim, true),\n triangles = [];\n\n if (!outerNode || outerNode.next === outerNode.prev) return triangles;\n\n var minX, minY, maxX, maxY, x, y, invSize;\n\n if (hasHoles) outerNode = eliminateHoles(data, holeIndices, outerNode, dim);\n\n // if the shape is not too simple, we'll use z-order curve hash later; calculate polygon bbox\n if (data.length > 80 * dim) {\n minX = maxX = data[0];\n minY = maxY = data[1];\n\n for (var i = dim; i < outerLen; i += dim) {\n x = data[i];\n y = data[i + 1];\n if (x < minX) minX = x;\n if (y < minY) minY = y;\n if (x > maxX) maxX = x;\n if (y > maxY) maxY = y;\n }\n\n // minX, minY and invSize are later used to transform coords into integers for z-order calculation\n invSize = Math.max(maxX - minX, maxY - minY);\n invSize = invSize !== 0 ? 32767 / invSize : 0;\n }\n\n earcutLinked(outerNode, triangles, dim, minX, minY, invSize, 0);\n\n return triangles;\n}\n\n// create a circular doubly linked list from polygon points in the specified winding order\nfunction linkedList(data, start, end, dim, clockwise) {\n var i, last;\n\n if (clockwise === (signedArea(data, start, end, dim) > 0)) {\n for (i = start; i < end; i += dim) last = insertNode(i, data[i], data[i + 1], last);\n } else {\n for (i = end - dim; i >= start; i -= dim) last = insertNode(i, data[i], data[i + 1], last);\n }\n\n if (last && equals(last, last.next)) {\n removeNode(last);\n last = last.next;\n }\n\n return last;\n}\n\n// eliminate colinear or duplicate points\nfunction filterPoints(start, end) {\n if (!start) return start;\n if (!end) end = start;\n\n var p = start,\n again;\n do {\n again = false;\n\n if (!p.steiner && (equals(p, p.next) || area(p.prev, p, p.next) === 0)) {\n removeNode(p);\n p = end = p.prev;\n if (p === p.next) break;\n again = true;\n\n } else {\n p = p.next;\n }\n } while (again || p !== end);\n\n return end;\n}\n\n// main ear slicing loop which triangulates a polygon (given as a linked list)\nfunction earcutLinked(ear, triangles, dim, minX, minY, invSize, pass) {\n if (!ear) return;\n\n // interlink polygon nodes in z-order\n if (!pass && invSize) indexCurve(ear, minX, minY, invSize);\n\n var stop = ear,\n prev, next;\n\n // iterate through ears, slicing them one by one\n while (ear.prev !== ear.next) {\n prev = ear.prev;\n next = ear.next;\n\n if (invSize ? isEarHashed(ear, minX, minY, invSize) : isEar(ear)) {\n // cut off the triangle\n triangles.push(prev.i / dim | 0);\n triangles.push(ear.i / dim | 0);\n triangles.push(next.i / dim | 0);\n\n removeNode(ear);\n\n // skipping the next vertex leads to less sliver triangles\n ear = next.next;\n stop = next.next;\n\n continue;\n }\n\n ear = next;\n\n // if we looped through the whole remaining polygon and can't find any more ears\n if (ear === stop) {\n // try filtering points and slicing again\n if (!pass) {\n earcutLinked(filterPoints(ear), triangles, dim, minX, minY, invSize, 1);\n\n // if this didn't work, try curing all small self-intersections locally\n } else if (pass === 1) {\n ear = cureLocalIntersections(filterPoints(ear), triangles, dim);\n earcutLinked(ear, triangles, dim, minX, minY, invSize, 2);\n\n // as a last resort, try splitting the remaining polygon into two\n } else if (pass === 2) {\n splitEarcut(ear, triangles, dim, minX, minY, invSize);\n }\n\n break;\n }\n }\n}\n\n// check whether a polygon node forms a valid ear with adjacent nodes\nfunction isEar(ear) {\n var a = ear.prev,\n b = ear,\n c = ear.next;\n\n if (area(a, b, c) >= 0) return false; // reflex, can't be an ear\n\n // now make sure we don't have other points inside the potential ear\n var ax = a.x, bx = b.x, cx = c.x, ay = a.y, by = b.y, cy = c.y;\n\n // triangle bbox; min & max are calculated like this for speed\n var x0 = ax < bx ? (ax < cx ? ax : cx) : (bx < cx ? bx : cx),\n y0 = ay < by ? (ay < cy ? ay : cy) : (by < cy ? by : cy),\n x1 = ax > bx ? (ax > cx ? ax : cx) : (bx > cx ? bx : cx),\n y1 = ay > by ? (ay > cy ? ay : cy) : (by > cy ? by : cy);\n\n var p = c.next;\n while (p !== a) {\n if (p.x >= x0 && p.x <= x1 && p.y >= y0 && p.y <= y1 &&\n pointInTriangle(ax, ay, bx, by, cx, cy, p.x, p.y) &&\n area(p.prev, p, p.next) >= 0) return false;\n p = p.next;\n }\n\n return true;\n}\n\nfunction isEarHashed(ear, minX, minY, invSize) {\n var a = ear.prev,\n b = ear,\n c = ear.next;\n\n if (area(a, b, c) >= 0) return false; // reflex, can't be an ear\n\n var ax = a.x, bx = b.x, cx = c.x, ay = a.y, by = b.y, cy = c.y;\n\n // triangle bbox; min & max are calculated like this for speed\n var x0 = ax < bx ? (ax < cx ? ax : cx) : (bx < cx ? bx : cx),\n y0 = ay < by ? (ay < cy ? ay : cy) : (by < cy ? by : cy),\n x1 = ax > bx ? (ax > cx ? ax : cx) : (bx > cx ? bx : cx),\n y1 = ay > by ? (ay > cy ? ay : cy) : (by > cy ? by : cy);\n\n // z-order range for the current triangle bbox;\n var minZ = zOrder(x0, y0, minX, minY, invSize),\n maxZ = zOrder(x1, y1, minX, minY, invSize);\n\n var p = ear.prevZ,\n n = ear.nextZ;\n\n // look for points inside the triangle in both directions\n while (p && p.z >= minZ && n && n.z <= maxZ) {\n if (p.x >= x0 && p.x <= x1 && p.y >= y0 && p.y <= y1 && p !== a && p !== c &&\n pointInTriangle(ax, ay, bx, by, cx, cy, p.x, p.y) && area(p.prev, p, p.next) >= 0) return false;\n p = p.prevZ;\n\n if (n.x >= x0 && n.x <= x1 && n.y >= y0 && n.y <= y1 && n !== a && n !== c &&\n pointInTriangle(ax, ay, bx, by, cx, cy, n.x, n.y) && area(n.prev, n, n.next) >= 0) return false;\n n = n.nextZ;\n }\n\n // look for remaining points in decreasing z-order\n while (p && p.z >= minZ) {\n if (p.x >= x0 && p.x <= x1 && p.y >= y0 && p.y <= y1 && p !== a && p !== c &&\n pointInTriangle(ax, ay, bx, by, cx, cy, p.x, p.y) && area(p.prev, p, p.next) >= 0) return false;\n p = p.prevZ;\n }\n\n // look for remaining points in increasing z-order\n while (n && n.z <= maxZ) {\n if (n.x >= x0 && n.x <= x1 && n.y >= y0 && n.y <= y1 && n !== a && n !== c &&\n pointInTriangle(ax, ay, bx, by, cx, cy, n.x, n.y) && area(n.prev, n, n.next) >= 0) return false;\n n = n.nextZ;\n }\n\n return true;\n}\n\n// go through all polygon nodes and cure small local self-intersections\nfunction cureLocalIntersections(start, triangles, dim) {\n var p = start;\n do {\n var a = p.prev,\n b = p.next.next;\n\n if (!equals(a, b) && intersects(a, p, p.next, b) && locallyInside(a, b) && locallyInside(b, a)) {\n\n triangles.push(a.i / dim | 0);\n triangles.push(p.i / dim | 0);\n triangles.push(b.i / dim | 0);\n\n // remove two nodes involved\n removeNode(p);\n removeNode(p.next);\n\n p = start = b;\n }\n p = p.next;\n } while (p !== start);\n\n return filterPoints(p);\n}\n\n// try splitting polygon into two and triangulate them independently\nfunction splitEarcut(start, triangles, dim, minX, minY, invSize) {\n // look for a valid diagonal that divides the polygon into two\n var a = start;\n do {\n var b = a.next.next;\n while (b !== a.prev) {\n if (a.i !== b.i && isValidDiagonal(a, b)) {\n // split the polygon in two by the diagonal\n var c = splitPolygon(a, b);\n\n // filter colinear points around the cuts\n a = filterPoints(a, a.next);\n c = filterPoints(c, c.next);\n\n // run earcut on each half\n earcutLinked(a, triangles, dim, minX, minY, invSize, 0);\n earcutLinked(c, triangles, dim, minX, minY, invSize, 0);\n return;\n }\n b = b.next;\n }\n a = a.next;\n } while (a !== start);\n}\n\n// link every hole into the outer loop, producing a single-ring polygon without holes\nfunction eliminateHoles(data, holeIndices, outerNode, dim) {\n var queue = [],\n i, len, start, end, list;\n\n for (i = 0, len = holeIndices.length; i < len; i++) {\n start = holeIndices[i] * dim;\n end = i < len - 1 ? holeIndices[i + 1] * dim : data.length;\n list = linkedList(data, start, end, dim, false);\n if (list === list.next) list.steiner = true;\n queue.push(getLeftmost(list));\n }\n\n queue.sort(compareX);\n\n // process holes from left to right\n for (i = 0; i < queue.length; i++) {\n outerNode = eliminateHole(queue[i], outerNode);\n }\n\n return outerNode;\n}\n\nfunction compareX(a, b) {\n return a.x - b.x;\n}\n\n// find a bridge between vertices that connects hole with an outer ring and and link it\nfunction eliminateHole(hole, outerNode) {\n var bridge = findHoleBridge(hole, outerNode);\n if (!bridge) {\n return outerNode;\n }\n\n var bridgeReverse = splitPolygon(bridge, hole);\n\n // filter collinear points around the cuts\n filterPoints(bridgeReverse, bridgeReverse.next);\n return filterPoints(bridge, bridge.next);\n}\n\n// David Eberly's algorithm for finding a bridge between hole and outer polygon\nfunction findHoleBridge(hole, outerNode) {\n var p = outerNode,\n hx = hole.x,\n hy = hole.y,\n qx = -Infinity,\n m;\n\n // find a segment intersected by a ray from the hole's leftmost point to the left;\n // segment's endpoint with lesser x will be potential connection point\n do {\n if (hy <= p.y && hy >= p.next.y && p.next.y !== p.y) {\n var x = p.x + (hy - p.y) * (p.next.x - p.x) / (p.next.y - p.y);\n if (x <= hx && x > qx) {\n qx = x;\n m = p.x < p.next.x ? p : p.next;\n if (x === hx) return m; // hole touches outer segment; pick leftmost endpoint\n }\n }\n p = p.next;\n } while (p !== outerNode);\n\n if (!m) return null;\n\n // look for points inside the triangle of hole point, segment intersection and endpoint;\n // if there are no points found, we have a valid connection;\n // otherwise choose the point of the minimum angle with the ray as connection point\n\n var stop = m,\n mx = m.x,\n my = m.y,\n tanMin = Infinity,\n tan;\n\n p = m;\n\n do {\n if (hx >= p.x && p.x >= mx && hx !== p.x &&\n pointInTriangle(hy < my ? hx : qx, hy, mx, my, hy < my ? qx : hx, hy, p.x, p.y)) {\n\n tan = Math.abs(hy - p.y) / (hx - p.x); // tangential\n\n if (locallyInside(p, hole) &&\n (tan < tanMin || (tan === tanMin && (p.x > m.x || (p.x === m.x && sectorContainsSector(m, p)))))) {\n m = p;\n tanMin = tan;\n }\n }\n\n p = p.next;\n } while (p !== stop);\n\n return m;\n}\n\n// whether sector in vertex m contains sector in vertex p in the same coordinates\nfunction sectorContainsSector(m, p) {\n return area(m.prev, m, p.prev) < 0 && area(p.next, m, m.next) < 0;\n}\n\n// interlink polygon nodes in z-order\nfunction indexCurve(start, minX, minY, invSize) {\n var p = start;\n do {\n if (p.z === 0) p.z = zOrder(p.x, p.y, minX, minY, invSize);\n p.prevZ = p.prev;\n p.nextZ = p.next;\n p = p.next;\n } while (p !== start);\n\n p.prevZ.nextZ = null;\n p.prevZ = null;\n\n sortLinked(p);\n}\n\n// Simon Tatham's linked list merge sort algorithm\n// http://www.chiark.greenend.org.uk/~sgtatham/algorithms/listsort.html\nfunction sortLinked(list) {\n var i, p, q, e, tail, numMerges, pSize, qSize,\n inSize = 1;\n\n do {\n p = list;\n list = null;\n tail = null;\n numMerges = 0;\n\n while (p) {\n numMerges++;\n q = p;\n pSize = 0;\n for (i = 0; i < inSize; i++) {\n pSize++;\n q = q.nextZ;\n if (!q) break;\n }\n qSize = inSize;\n\n while (pSize > 0 || (qSize > 0 && q)) {\n\n if (pSize !== 0 && (qSize === 0 || !q || p.z <= q.z)) {\n e = p;\n p = p.nextZ;\n pSize--;\n } else {\n e = q;\n q = q.nextZ;\n qSize--;\n }\n\n if (tail) tail.nextZ = e;\n else list = e;\n\n e.prevZ = tail;\n tail = e;\n }\n\n p = q;\n }\n\n tail.nextZ = null;\n inSize *= 2;\n\n } while (numMerges > 1);\n\n return list;\n}\n\n// z-order of a point given coords and inverse of the longer side of data bbox\nfunction zOrder(x, y, minX, minY, invSize) {\n // coords are transformed into non-negative 15-bit integer range\n x = (x - minX) * invSize | 0;\n y = (y - minY) * invSize | 0;\n\n x = (x | (x << 8)) & 0x00FF00FF;\n x = (x | (x << 4)) & 0x0F0F0F0F;\n x = (x | (x << 2)) & 0x33333333;\n x = (x | (x << 1)) & 0x55555555;\n\n y = (y | (y << 8)) & 0x00FF00FF;\n y = (y | (y << 4)) & 0x0F0F0F0F;\n y = (y | (y << 2)) & 0x33333333;\n y = (y | (y << 1)) & 0x55555555;\n\n return x | (y << 1);\n}\n\n// find the leftmost node of a polygon ring\nfunction getLeftmost(start) {\n var p = start,\n leftmost = start;\n do {\n if (p.x < leftmost.x || (p.x === leftmost.x && p.y < leftmost.y)) leftmost = p;\n p = p.next;\n } while (p !== start);\n\n return leftmost;\n}\n\n// check if a point lies within a convex triangle\nfunction pointInTriangle(ax, ay, bx, by, cx, cy, px, py) {\n return (cx - px) * (ay - py) >= (ax - px) * (cy - py) &&\n (ax - px) * (by - py) >= (bx - px) * (ay - py) &&\n (bx - px) * (cy - py) >= (cx - px) * (by - py);\n}\n\n// check if a diagonal between two polygon nodes is valid (lies in polygon interior)\nfunction isValidDiagonal(a, b) {\n return a.next.i !== b.i && a.prev.i !== b.i && !intersectsPolygon(a, b) && // dones't intersect other edges\n (locallyInside(a, b) && locallyInside(b, a) && middleInside(a, b) && // locally visible\n (area(a.prev, a, b.prev) || area(a, b.prev, b)) || // does not create opposite-facing sectors\n equals(a, b) && area(a.prev, a, a.next) > 0 && area(b.prev, b, b.next) > 0); // special zero-length case\n}\n\n// signed area of a triangle\nfunction area(p, q, r) {\n return (q.y - p.y) * (r.x - q.x) - (q.x - p.x) * (r.y - q.y);\n}\n\n// check if two points are equal\nfunction equals(p1, p2) {\n return p1.x === p2.x && p1.y === p2.y;\n}\n\n// check if two segments intersect\nfunction intersects(p1, q1, p2, q2) {\n var o1 = sign(area(p1, q1, p2));\n var o2 = sign(area(p1, q1, q2));\n var o3 = sign(area(p2, q2, p1));\n var o4 = sign(area(p2, q2, q1));\n\n if (o1 !== o2 && o3 !== o4) return true; // general case\n\n if (o1 === 0 && onSegment(p1, p2, q1)) return true; // p1, q1 and p2 are collinear and p2 lies on p1q1\n if (o2 === 0 && onSegment(p1, q2, q1)) return true; // p1, q1 and q2 are collinear and q2 lies on p1q1\n if (o3 === 0 && onSegment(p2, p1, q2)) return true; // p2, q2 and p1 are collinear and p1 lies on p2q2\n if (o4 === 0 && onSegment(p2, q1, q2)) return true; // p2, q2 and q1 are collinear and q1 lies on p2q2\n\n return false;\n}\n\n// for collinear points p, q, r, check if point q lies on segment pr\nfunction onSegment(p, q, r) {\n return q.x <= Math.max(p.x, r.x) && q.x >= Math.min(p.x, r.x) && q.y <= Math.max(p.y, r.y) && q.y >= Math.min(p.y, r.y);\n}\n\nfunction sign(num) {\n return num > 0 ? 1 : num < 0 ? -1 : 0;\n}\n\n// check if a polygon diagonal intersects any polygon segments\nfunction intersectsPolygon(a, b) {\n var p = a;\n do {\n if (p.i !== a.i && p.next.i !== a.i && p.i !== b.i && p.next.i !== b.i &&\n intersects(p, p.next, a, b)) return true;\n p = p.next;\n } while (p !== a);\n\n return false;\n}\n\n// check if a polygon diagonal is locally inside the polygon\nfunction locallyInside(a, b) {\n return area(a.prev, a, a.next) < 0 ?\n area(a, b, a.next) >= 0 && area(a, a.prev, b) >= 0 :\n area(a, b, a.prev) < 0 || area(a, a.next, b) < 0;\n}\n\n// check if the middle point of a polygon diagonal is inside the polygon\nfunction middleInside(a, b) {\n var p = a,\n inside = false,\n px = (a.x + b.x) / 2,\n py = (a.y + b.y) / 2;\n do {\n if (((p.y > py) !== (p.next.y > py)) && p.next.y !== p.y &&\n (px < (p.next.x - p.x) * (py - p.y) / (p.next.y - p.y) + p.x))\n inside = !inside;\n p = p.next;\n } while (p !== a);\n\n return inside;\n}\n\n// link two polygon vertices with a bridge; if the vertices belong to the same ring, it splits polygon into two;\n// if one belongs to the outer ring and another to a hole, it merges it into a single ring\nfunction splitPolygon(a, b) {\n var a2 = new Node(a.i, a.x, a.y),\n b2 = new Node(b.i, b.x, b.y),\n an = a.next,\n bp = b.prev;\n\n a.next = b;\n b.prev = a;\n\n a2.next = an;\n an.prev = a2;\n\n b2.next = a2;\n a2.prev = b2;\n\n bp.next = b2;\n b2.prev = bp;\n\n return b2;\n}\n\n// create a node and optionally link it with previous one (in a circular doubly linked list)\nfunction insertNode(i, x, y, last) {\n var p = new Node(i, x, y);\n\n if (!last) {\n p.prev = p;\n p.next = p;\n\n } else {\n p.next = last.next;\n p.prev = last;\n last.next.prev = p;\n last.next = p;\n }\n return p;\n}\n\nfunction removeNode(p) {\n p.next.prev = p.prev;\n p.prev.next = p.next;\n\n if (p.prevZ) p.prevZ.nextZ = p.nextZ;\n if (p.nextZ) p.nextZ.prevZ = p.prevZ;\n}\n\nfunction Node(i, x, y) {\n // vertex index in coordinates array\n this.i = i;\n\n // vertex coordinates\n this.x = x;\n this.y = y;\n\n // previous and next vertex nodes in a polygon ring\n this.prev = null;\n this.next = null;\n\n // z-order curve value\n this.z = 0;\n\n // previous and next nodes in z-order\n this.prevZ = null;\n this.nextZ = null;\n\n // indicates whether this is a steiner point\n this.steiner = false;\n}\n\n// return a percentage difference between the polygon area and its triangulation area;\n// used to verify correctness of triangulation\nearcut.deviation = function (data, holeIndices, dim, triangles) {\n var hasHoles = holeIndices && holeIndices.length;\n var outerLen = hasHoles ? holeIndices[0] * dim : data.length;\n\n var polygonArea = Math.abs(signedArea(data, 0, outerLen, dim));\n if (hasHoles) {\n for (var i = 0, len = holeIndices.length; i < len; i++) {\n var start = holeIndices[i] * dim;\n var end = i < len - 1 ? holeIndices[i + 1] * dim : data.length;\n polygonArea -= Math.abs(signedArea(data, start, end, dim));\n }\n }\n\n var trianglesArea = 0;\n for (i = 0; i < triangles.length; i += 3) {\n var a = triangles[i] * dim;\n var b = triangles[i + 1] * dim;\n var c = triangles[i + 2] * dim;\n trianglesArea += Math.abs(\n (data[a] - data[c]) * (data[b + 1] - data[a + 1]) -\n (data[a] - data[b]) * (data[c + 1] - data[a + 1]));\n }\n\n return polygonArea === 0 && trianglesArea === 0 ? 0 :\n Math.abs((trianglesArea - polygonArea) / polygonArea);\n};\n\nfunction signedArea(data, start, end, dim) {\n var sum = 0;\n for (var i = start, j = end - dim; i < end; i += dim) {\n sum += (data[j] - data[i]) * (data[i + 1] + data[j + 1]);\n j = i;\n }\n return sum;\n}\n\n// turn a polygon in a multi-dimensional array form (e.g. as in GeoJSON) into a form Earcut accepts\nearcut.flatten = function (data) {\n var dim = data[0][0].length,\n result = {vertices: [], holes: [], dimensions: dim},\n holeIndex = 0;\n\n for (var i = 0; i < data.length; i++) {\n for (var j = 0; j < data[i].length; j++) {\n for (var d = 0; d < dim; d++) result.vertices.push(data[i][j][d]);\n }\n if (i > 0) {\n holeIndex += data[i - 1].length;\n result.holes.push(holeIndex);\n }\n }\n return result;\n};\n","import { defaultSemanticsColors } from '../../defaults/colors.js';\n\nexport class BaseParser {\n\n\tconstructor( json, objectIds, objectColors ) {\n\n\t\tthis.json = json;\n\n\t\tthis.objectIds = objectIds;\n\t\tthis.objectColors = objectColors;\n\t\tthis.surfaceColors = defaultSemanticsColors;\n\t\tthis.lods = [];\n\n\t}\n\n\tclean() { }\n\n\tparseGeometry( geometry, objectId, geomIdx ) {}\n\n\tgetObjectIdx( objectId ) {\n\n\t\treturn this.objectIds.indexOf( objectId );\n\n\t}\n\n\tgetObjectTypeIdx( cityObjectTypeName ) {\n\n\t\tlet objType = Object.keys( this.objectColors ).indexOf( cityObjectTypeName );\n\n\t\tif ( objType < 0 ) {\n\n\t\t\tobjType = Object.keys( this.objectColors ).length;\n\t\t\tthis.objectColors[ cityObjectTypeName ] = Math.floor( Math.random() * 0xffffff );\n\n\t\t}\n\n\t\treturn objType;\n\n\t}\n\n\tgetSurfaceTypeIdx( idx, semantics, surfaces ) {\n\n\t\tlet surfaceType = - 1;\n\t\tif ( semantics.length > 0 ) {\n\n\t\t\tconst surface = surfaces[ semantics[ idx ] ];\n\n\t\t\tif ( surface ) {\n\n\t\t\t\tsurfaceType = Object.keys( this.surfaceColors ).indexOf( surface.type );\n\n\t\t\t\tif ( surfaceType < 0 ) {\n\n\t\t\t\t\tsurfaceType = Object.keys( this.surfaceColors ).length;\n\t\t\t\t\tthis.surfaceColors[ surface.type ] = Math.floor( Math.random() * 0xffffff );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn surfaceType;\n\n\t}\n\n\tgetSurfaceMaterials( idx, material ) {\n\n\t\tconst pairs = Object.entries( material ).map( mat => {\n\n\t\t\tconst [ theme, obj ] = mat;\n\n\t\t\tif ( obj.values ) {\n\n\t\t\t\treturn [ theme, obj.values[ idx ] ];\n\n\t\t\t} else if ( obj.value !== undefined ) {\n\n\t\t\t\treturn [ theme, obj.value ];\n\n\t\t\t} else {\n\n\t\t\t\treturn [ theme, - 1 ];\n\n\t\t\t}\n\n\t\t} );\n\n\t\treturn Object.fromEntries( pairs );\n\n\t}\n\n\tgetTextureData( surfaceIndex, vertexIndex, holes, texture ) {\n\n\t\tif ( this.json.appearance && this.json.appearance[ 'vertices-texture' ] ) {\n\n\t\t\tconst textureVertices = this.json.appearance[ 'vertices-texture' ];\n\n\t\t\tconst pairs = Object.entries( texture ).map( tex => {\n\n\t\t\t\tconst [ theme, obj ] = tex;\n\n\t\t\t\tif ( obj.values ) {\n\n\t\t\t\t\tconst activeHoles = holes.filter( v => v <= vertexIndex );\n\n\t\t\t\t\tconst ringId = activeHoles.length;\n\t\t\t\t\tconst vId = ringId ? vertexIndex - activeHoles[ activeHoles.length - 1 ] : vertexIndex;\n\n\t\t\t\t\t// TODO: This is very delicate\n\t\t\t\t\tconst data = obj.values[ surfaceIndex ];\n\n\t\t\t\t\tif ( data[ 0 ][ 0 ] !== null ) {\n\n\t\t\t\t\t\tconst uvs = textureVertices[ data[ ringId ][ vId + 1 ] ];\n\n\t\t\t\t\t\treturn [ theme, { index: data[ 0 ][ 0 ], uvs } ];\n\n\t\t\t\t\t}\n\n\n\t\t\t\t\treturn [ theme, { index: - 1, uvs: [ 0, 0 ] } ];\n\n\t\t\t\t} else {\n\n\t\t\t\t\treturn [ theme, { index: - 1, uvs: [ 0, 0 ] } ];\n\n\t\t\t\t}\n\n\t\t\t} );\n\n\t\t\treturn Object.fromEntries( pairs );\n\n\t\t}\n\n\t\treturn undefined;\n\n\t}\n\n\tgetLodIndex( lod ) {\n\n\t\tif ( lod === undefined ) {\n\n\t\t\treturn - 1;\n\n\t\t}\n\n\t\tconst lodIdx = this.lods.indexOf( lod );\n\n\t\tif ( lodIdx < 0 ) {\n\n\t\t\tconst newIdx = this.lods.length;\n\t\t\tthis.lods.push( lod );\n\t\t\treturn newIdx;\n\n\t\t}\n\n\t\treturn lodIdx;\n\n\t}\n\n}\n","import { LINES, GeometryData } from './GeometryData.js';\nimport { BaseParser } from './BaseParser.js';\n\nexport class LineParser extends BaseParser {\n\n\tconstructor( json, objectIds, objectColors ) {\n\n\t\tsuper( json, objectIds, objectColors );\n\n\t\tthis.geomData = new GeometryData( LINES );\n\n\t}\n\n\tclean() {\n\n\t\tthis.geomData = new GeometryData( LINES );\n\n\t}\n\n\thandles( geometry ) {\n\n\t\treturn geometry.type == \"MultiLineString\";\n\n\t}\n\n\tparseGeometry( geometry, objectId, geomIdx ) {\n\n\t\tconst semanticSurfaces = geometry.semantics ? geometry.semantics.surfaces : [];\n\n\t\tif ( geometry.type == \"MultiLineString\" ) {\n\n\t\t\tconst cityObj = this.json.CityObjects[ objectId ];\n\n\t\t\tconst idIdx = this.getObjectIdx( objectId );\n\n\t\t\tconst objType = this.getObjectTypeIdx( cityObj.type );\n\n\t\t\tconst lodIdx = this.getLodIndex( cityObj.geometry[ geomIdx ].lod );\n\n\t\t\tconst linestrings = geometry.boundaries;\n\n\t\t\tfor ( let i = 0; i < linestrings.length; i ++ ) {\n\n\t\t\t\tif ( linestrings[ i ].length > 1 ) {\n\n\t\t\t\t\tconst semantics = geometry.semantics ? geometry.semantics.values : [];\n\t\t\t\t\tconst surfaceType = this.getSurfaceTypeIdx( i, semantics, semanticSurfaces );\n\n\t\t\t\t\tconst linestring = linestrings[ i ];\n\n\t\t\t\t\t// Contains the boundary but with the right verticeId\n\t\t\t\t\tfor ( let j = 0; j < linestrings[ i ].length - 1; j ++ ) {\n\n\t\t\t\t\t\tthis.geomData.addVertex( linestring[ j ],\n\t\t\t\t\t\t\tidIdx,\n\t\t\t\t\t\t\tobjType,\n\t\t\t\t\t\t\tsurfaceType,\n\t\t\t\t\t\t\tgeomIdx,\n\t\t\t\t\t\t\ti,\n\t\t\t\t\t\t\tlodIdx );\n\n\t\t\t\t\t\tthis.geomData.addVertex( linestring[ j + 1 ],\n\t\t\t\t\t\t\tidIdx,\n\t\t\t\t\t\t\tobjType,\n\t\t\t\t\t\t\tsurfaceType,\n\t\t\t\t\t\t\tgeomIdx,\n\t\t\t\t\t\t\ti,\n\t\t\t\t\t\t\tlodIdx );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n}\n","import { POINTS, GeometryData } from './GeometryData.js';\nimport { BaseParser } from './BaseParser.js';\n\nexport class PointParser extends BaseParser {\n\n\tconstructor( json, objectIds, objectColors ) {\n\n\t\tsuper( json, objectIds, objectColors );\n\n\t\tthis.geomData = new GeometryData( POINTS );\n\n\t}\n\n\tclean() {\n\n\t\tthis.geomData = new GeometryData( POINTS );\n\n\t}\n\n\thandles( geometry ) {\n\n\t\treturn geometry.type == \"MultiPoint\";\n\n\t}\n\n\tparseGeometry( geometry, objectId, geomIdx ) {\n\n\t\tconst semanticSurfaces = geometry.semantics ? geometry.semantics.surfaces : [];\n\n\t\tif ( geometry.type == \"MultiPoint\" ) {\n\n\t\t\tconst cityObj = this.json.CityObjects[ objectId ];\n\n\t\t\tconst idIdx = this.getObjectIdx( objectId );\n\n\t\t\tconst objType = this.getObjectTypeIdx( cityObj.type );\n\n\t\t\tconst lodIdx = this.getLodIndex( cityObj.geometry[ geomIdx ].lod );\n\n\t\t\tconst points = geometry.boundaries;\n\n\t\t\tfor ( let i = 0; i < points.length; i ++ ) {\n\n\t\t\t\tconst semantics = geometry.semantics ? geometry.semantics.values : [];\n\t\t\t\tconst surfaceType = this.getSurfaceTypeIdx( i, semantics, semanticSurfaces );\n\n\t\t\t\tthis.geomData.addVertex( points[ i ],\n\t\t\t\t\tidIdx,\n\t\t\t\t\tobjType,\n\t\t\t\t\tsurfaceType,\n\t\t\t\t\tgeomIdx,\n\t\t\t\t\ti,\n\t\t\t\t\tlodIdx );\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n}\n","import { InstancedBufferGeometry } from 'three';\nimport { InstancedBufferAttribute } from 'three';\nimport { BufferAttribute,\n\t\t InstancedMesh,\n\t\t Int32BufferAttribute } from 'three';\n\nexport class CityObjectsInstancedMesh extends InstancedMesh {\n\n\tconstructor( citymodel, vertices, geometryData, instanceData, matrix, material ) {\n\n\t\tconst geom = new InstancedBufferGeometry();\n\n\t\tconst vertexArray = new Float32Array( vertices );\n\t\tgeom.setAttribute( 'position', new BufferAttribute( vertexArray, 3 ) );\n\t\tconst idsArray = new Uint16Array( instanceData.objectIds );\n\t\tgeom.setAttribute( 'objectid', new InstancedBufferAttribute( idsArray, 1 ) );\n\t\tconst typeArray = new Int32Array( instanceData.objectType );\n\t\tgeom.setAttribute( 'type', new InstancedBufferAttribute( typeArray, 1 ) );\n\t\tconst surfaceTypeArray = new Int8Array( geometryData.semanticSurfaces );\n\t\tgeom.setAttribute( 'surfacetype', new Int32BufferAttribute( surfaceTypeArray, 1 ) );\n\t\tconst geomIdsArray = new Float32Array( instanceData.geometryIds );\n\t\tgeom.setAttribute( 'geometryid', new InstancedBufferAttribute( geomIdsArray, 1 ) );\n\t\tconst lodIdsArray = new Int8Array( geometryData.lodIds );\n\t\tgeom.setAttribute( 'lodid', new BufferAttribute( lodIdsArray, 1 ) );\n\t\tconst boundaryIdsArray = new Float32Array( geometryData.boundaryIds );\n\t\tgeom.setAttribute( 'boundaryid', new BufferAttribute( boundaryIdsArray, 1 ) );\n\n\t\tfor ( const material in geometryData.materials ) {\n\n\t\t\tconst materialArray = new Uint8Array( geometryData.materials[ material ] );\n\t\t\tgeom.setAttribute( `mat${material}`, new Int32BufferAttribute( materialArray, 1 ) );\n\n\t\t}\n\n\t\tgeom.attributes.position.needsUpdate = true;\n\n\t\tif ( matrix ) {\n\n\t\t\tgeom.applyMatrix4( matrix );\n\n\t\t}\n\n\t\tgeom.computeVertexNormals();\n\n\t\tsuper( geom, material, instanceData.matrices.length );\n\n\t\tfor ( let j = 0; j < instanceData.matrices.length; j ++ ) {\n\n\t\t\tthis.setMatrixAt( j, instanceData.matrices[ j ] );\n\n\t\t}\n\n\t\tthis.citymodel = citymodel;\n\n\t\tthis.isCityObject = true;\n\t\tthis.isCityObjectMesh = true;\n\n\t\tthis.supportsConditionalFormatting = true;\n\t\tthis.supportsMaterials = true;\n\n\t}\n\n\tsetArrayAsAttribute( array ) {\n\n\t\tthis.geometry.setAttribute( 'attributevalue', new InstancedBufferAttribute( new Int32Array( array ), 1 ) );\n\n\t}\n\n\taddAttributeByProperty( attributeEvaluator ) {\n\n\t\tconst allValues = attributeEvaluator.getAllValues();\n\t\tconst uniqueValues = attributeEvaluator.getUniqueValues();\n\n\t\tif ( uniqueValues.length < 110 ) {\n\n\t\t\tconst objectLookup = [];\n\t\t\tfor ( const value of allValues ) {\n\n\t\t\t\tobjectLookup.push( uniqueValues.indexOf( value ) );\n\n\t\t\t}\n\n\t\t\tconst objectIds = this.geometry.attributes.objectid.array;\n\n\t\t\tconst finalArray = objectIds.map( i => {\n\n\t\t\t\treturn objectLookup[ i ];\n\n\t\t\t} );\n\n\t\t\tif ( finalArray.length !== objectIds.length ) {\n\n\t\t\t\tconsole.warn( \"Wrong size of attributes array.\" );\n\t\t\t\treturn;\n\n\t\t\t}\n\n\t\t\tthis.setArrayAsAttribute( finalArray );\n\n\t\t}\n\n\t}\n\n\tgetIntersectionVertex( intersection ) {\n\n\t\treturn intersection.face.a;\n\n\t}\n\n\tresolveIntersectionInfo( intersection ) {\n\n\t\tconst intersectionInfo = {};\n\n\t\tconst vertexIdx = this.getIntersectionVertex( intersection );\n\t\tconst instanceId = intersection.instanceId;\n\n\t\tconst idx = this.geometry.getAttribute( 'objectid' ).getX( instanceId );\n\n\t\tintersectionInfo.vertexIndex = vertexIdx;\n\t\tintersectionInfo.objectIndex = idx;\n\t\tintersectionInfo.objectId = Object.keys( this.citymodel.CityObjects )[ idx ];\n\t\tintersectionInfo.geometryIndex = this.geometry.getAttribute( 'geometryid' ).getX( instanceId );\n\t\tintersectionInfo.boundaryIndex = this.geometry.getAttribute( 'boundaryid' ).getX( vertexIdx );\n\n\t\tintersectionInfo.objectTypeIndex = this.geometry.getAttribute( 'type' ).getX( instanceId );\n\t\tintersectionInfo.surfaceTypeIndex = this.geometry.getAttribute( 'surfacetype' ).getX( vertexIdx );\n\t\tintersectionInfo.lodIndex = this.geometry.getAttribute( 'lodid' ).getX( vertexIdx );\n\n\t\treturn intersectionInfo;\n\n\t}\n\n\tsetTextureTheme( theme, textureManager ) {\n\n\t\tif ( theme === \"undefined\" ) {\n\n\t\t\tthis.unsetTextures();\n\t\t\treturn;\n\n\t\t}\n\n\t\tconst themeName = theme.replace( /[^a-z0-9]/gi, '' );\n\n\t\tconst attributeName = `tex${themeName}`;\n\n\t\tif ( attributeName in this.geometry.attributes ) {\n\n\t\t\tconst textureIds = this.geometry.attributes[ attributeName ].array;\n\n\t\t\t// Create a lookup of textures\n\t\t\tconst { values, indices } = textureIds.reduce( ( p, c, i ) => {\n\n\t\t\t\tif ( p.last !== c ) {\n\n\t\t\t\t\tp.values.push( c );\n\t\t\t\t\tp.indices.push( i );\n\t\t\t\t\tp.last = c;\n\n\t\t \t\t}\n\n\t\t \t\treturn p;\n\n\t\t\t}, { last: - 1, values: [], indices: [] } );\n\n\t\t\tconst baseMaterial = Array.isArray( this.material ) ? this.material[ this.material.length - 1 ] : this.material;\n\n\t\t\tconst materials = textureManager.getMaterials( baseMaterial );\n\n\t\t\tfor ( const mat of materials ) {\n\n\t\t\t\tif ( mat !== baseMaterial ) {\n\n\t\t\t\t\tmat.textureTheme = theme;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// TODO: We need to add the last element here\n\t\t\tfor ( let i = 0; i < indices.length - 1; i ++ ) {\n\n\t\t\t\tthis.geometry.addGroup( indices[ i ], indices[ i + 1 ] - indices[ i ], values[ i ] > - 1 ? values[ i ] : materials.length - 1 );\n\n\t\t\t}\n\n\t\t\tconst i = indices.length - 1;\n\n\t\t\tthis.geometry.addGroup( indices[ i ], this.geometry.attributes.type.array.length - indices[ i ], values[ i ] > - 1 ? values[ i ] : materials.length - 1 );\n\n\t\t\tthis.material = materials;\n\n\t\t}\n\n\t}\n\n\tunsetTextures() {\n\n\t\tif ( Array.isArray( this.material ) ) {\n\n\t\t\tthis.material = this.material[ this.material.length - 1 ];\n\n\t\t}\n\n\t\tthis.material.textureTheme = \"undefined\";\n\n\t}\n\n}\n","let workerURL = require('./helpers/get-worker-url');\nlet url = new __parcel__URL__(\"ParserWorker.9395b3db.js\");\nmodule.exports = workerURL(url.toString(), url.origin, true);","\"use strict\";\n\nmodule.exports = function (workerUrl, origin, isESM) {\n if (origin === self.location.origin) {\n // If the worker bundle's url is on the same origin as the document,\n // use the worker bundle's own url.\n return workerUrl;\n } else {\n // Otherwise, create a blob URL which loads the worker bundle with `importScripts`.\n var source = isESM ? 'import ' + JSON.stringify(workerUrl) + ';' : 'importScripts(' + JSON.stringify(workerUrl) + ');';\n return URL.createObjectURL(new Blob([source], {\n type: 'application/javascript'\n }));\n }\n};","import { Matrix4, ShaderLib } from 'three';\nimport { defaultObjectColors, defaultSemanticsColors } from '../defaults/colors.js';\nimport { POINTS, LINES, TRIANGLES } from './geometry/GeometryData';\nimport 'three/examples/jsm/lines/LineMaterial';\nimport { CityObjectsMaterial } from '../materials/CityObjectsMaterial.js';\nimport { CityObjectsMesh } from '../objects/CityObjectsMesh.js';\nimport { CityObjectsLines } from '../objects/CityObjectsLines.js';\nimport { CityObjectsPoints } from '../objects/CityObjectsPoints.js';\nimport { CityObjectsLineMaterial } from '../materials/CityObjectsLineMaterial.js';\nimport { CityObjectsPointsMaterial } from '../materials/CityObjectsPointsMaterial.js';\nimport { TriangleParser } from './geometry/TriangleParser';\nimport { LineParser } from './geometry/LineParser';\nimport { PointParser } from './geometry/PointParser';\nimport { CityObjectsInstancedMesh } from '../objects/CityObjectsInstancedMesh.js';\nimport { ChunkParser } from './helpers/ChunkParser.js';\n\nexport class CityJSONParser {\n\n\tconstructor() {\n\n\t\tthis.matrix = null;\n\t\tthis.chunkSize = 2000;\n\n\t\tthis.objectColors = defaultObjectColors;\n\t\tthis.surfaceColors = defaultSemanticsColors;\n\n\t\tthis.lods = [];\n\n\t\tthis.resetMaterial();\n\n\t}\n\n\tresetMaterial() {\n\n\t\tthis.meshMaterial = new CityObjectsMaterial( ShaderLib.lambert, {\n\t\t\tobjectColors: this.objectColors,\n\t\t\tsurfaceColors: this.surfaceColors\n\t\t} );\n\n\t\tthis.lineMaterial = new CityObjectsLineMaterial( {\n\n\t\t\tcolor: 0xffffff,\n\t\t\tlinewidth: 0.001,\n\t\t\tvertexColors: false,\n\t\t\tdashed: false,\n\t\t\tobjectColors: this.objectColors,\n\t\t\tsurfaceColors: this.surfaceColors\n\n\t\t} );\n\n\t\tthis.pointsMaterial = new CityObjectsPointsMaterial( {\n\t\t\tsize: 10,\n\t\t\tobjectColors: this.objectColors,\n\t\t\tsurfaceColors: this.surfaceColors\n\t\t} );\n\n\t}\n\n\tsetMaterialsColors( objectColors, surfaceColors ) {\n\n\t\tthis.meshMaterial.objectColors = objectColors;\n\t\tthis.meshMaterial.surfaceColors = surfaceColors;\n\n\t\tthis.lineMaterial.objectColors = objectColors;\n\t\tthis.lineMaterial.surfaceColors = surfaceColors;\n\n\t\tthis.pointsMaterial.objectColors = objectColors;\n\t\tthis.pointsMaterial.surfaceColors = surfaceColors;\n\n\t}\n\n\tparse( data, scene ) {\n\n\t\tconst chunkParser = new ChunkParser();\n\n\t\tif ( this.chunkSize ) {\n\n\t\t\tchunkParser.chunkSize = this.chunkSize;\n\n\t\t}\n\n\t\tif ( this.objectColors ) {\n\n\t\t\tchunkParser.objectColors = this.objectColors;\n\n\t\t}\n\n\t\tif ( this.lods ) {\n\n\t\t\tchunkParser.lods = this.lods;\n\n\t\t}\n\n\n\t\tchunkParser.onchunkload = ( v, geometryData, lods, objectColors, surfaceColors ) => {\n\n\t\t\tconst vertexArray = new Float32Array( v );\n\t\t\tconst vertexBuffer = vertexArray.buffer;\n\n\t\t\tconst vertices = vertexBuffer;\n\t\t\tthis.setMaterialsColors( objectColors, surfaceColors );\n\t\t\tthis.lods = lods;\n\t\t\tthis.objectColors = objectColors;\n\t\t\tthis.surfaceColors = surfaceColors;\n\n\t\t\tif ( geometryData.geometryType == TRIANGLES ) {\n\n\t\t\t\tconst mesh = new CityObjectsMesh( data, vertices, geometryData, this.matrix, this.meshMaterial );\n\t\t\t\tscene.add( mesh );\n\n\t\t\t}\n\n\t\t\tif ( geometryData.geometryType == LINES ) {\n\n\t\t\t\tconst lines = new CityObjectsLines( data, vertices, geometryData, this.matrix, this.lineMaterial );\n\t\t\t\tscene.add( lines );\n\n\t\t\t}\n\n\t\t\tif ( geometryData.geometryType == POINTS ) {\n\n\t\t\t\tconst points = new CityObjectsPoints( data, vertices, geometryData, this.matrix, this.pointsMaterial );\n\t\t\t\tscene.add( points );\n\n\t\t\t}\n\n\t\t};\n\n\t\tchunkParser.parse( data );\n\n\t\tif ( data.appearance && data.appearance.materials ) {\n\n\t\t\tthis.meshMaterial.materials = data.appearance.materials;\n\n\t\t}\n\n\n\t\t// Parse geometry templates\n\t\tif ( data[ 'geometry-templates' ] ) {\n\n\t\t\tconst templatesGeomData = [];\n\n\t\t\tconst vertices = data[ 'geometry-templates' ][ 'vertices-templates' ];\n\n\t\t\tconst geometryParsers = [\n\t\t\t\tnew TriangleParser( data, Object.keys( data.CityObjects ), this.objectColors, vertices ),\n\t\t\t\tnew LineParser( data, Object.keys( data.CityObjects ), this.objectColors, vertices ),\n\t\t\t\tnew PointParser( data, Object.keys( data.CityObjects ), this.objectColors, vertices )\n\t\t\t];\n\n\t\t\tfor ( const template of data[ 'geometry-templates' ].templates ) {\n\n\t\t\t\tfor ( const geometryParser of geometryParsers ) {\n\n\t\t\t\t\tgeometryParser.lods = this.lods;\n\t\t\t\t\tgeometryParser.parseGeometry( template, - 1, - 1 );\n\t\t\t\t\tthis.lods = geometryParser.lods;\n\n\t\t\t\t\tif ( geometryParser.geomData.count() > 0 ) {\n\n\t\t\t\t\t\ttemplatesGeomData.push( geometryParser.geomData );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tgeometryParser.clean();\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tconst instances = [];\n\n\t\t\tfor ( let i = 0; i < templatesGeomData.length; i ++ ) {\n\n\t\t\t\tinstances.push( {\n\t\t\t\t\tmatrices: [],\n\t\t\t\t\tobjectIds: [],\n\t\t\t\t\tobjectType: [],\n\t\t\t\t\tgeometryIds: []\n\t\t\t\t} );\n\n\t\t\t}\n\n\t\t\tfor ( const objectId in data.CityObjects ) {\n\n\t\t\t\tconst cityObject = data.CityObjects[ objectId ];\n\n\t\t\t\tif ( cityObject.geometry && cityObject.geometry.length > 0 ) {\n\n\t\t\t\t\tfor ( let i = 0; i < cityObject.geometry.length; i ++ ) {\n\n\t\t\t\t\t\tconst geometry = cityObject.geometry[ i ];\n\n\t\t\t\t\t\tif ( geometry.type == \"GeometryInstance\" ) {\n\n\t\t\t\t\t\t\tconst matrix = new Matrix4();\n\t\t\t\t\t\t\tmatrix.set( ... geometry.transformationMatrix );\n\t\t\t\t\t\t\tmatrix.setPosition( ... data.vertices[ geometry.boundaries[ 0 ] ] );\n\n\t\t\t\t\t\t\tinstances[ geometry.template ].matrices.push( matrix );\n\t\t\t\t\t\t\tinstances[ geometry.template ].objectIds.push( Object.keys( data.CityObjects ).indexOf( objectId ) );\n\t\t\t\t\t\t\tinstances[ geometry.template ].objectType.push( Object.keys( this.objectColors ).indexOf( cityObject.type ) );\n\t\t\t\t\t\t\tinstances[ geometry.template ].geometryIds.push( i );\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tfor ( let i = 0; i < templatesGeomData.length; i ++ ) {\n\n\t\t\t\tif ( templatesGeomData[ i ].geometryType == TRIANGLES ) {\n\n\t\t\t\t\tconst mesh = new CityObjectsInstancedMesh( data, templatesGeomData[ i ].getVertices( vertices ), templatesGeomData[ i ], instances[ i ], this.matrix, this.meshMaterial );\n\t\t\t\t\tscene.add( mesh );\n\n\n\t\t\t\t} else if ( templatesGeomData[ i ].geometryType == LINES ) {\n\n\t\t\t\t\tfor ( let j = 0; j < instances[ i ].matrices.length; j ++ ) {\n\n\t\t\t\t\t\ttemplatesGeomData[ i ].setObjectId( instances[ i ].objectIds[ j ] );\n\t\t\t\t\t\ttemplatesGeomData[ i ].setObjectType( instances[ i ].objectType[ j ] );\n\t\t\t\t\t\ttemplatesGeomData[ i ].setGeometryIdx( instances[ i ].geometryIds[ j ] );\n\n\t\t\t\t\t\tconst line = new CityObjectsLines( templatesGeomData[ i ].getVertices( vertices ), templatesGeomData[ i ], this.matrix, this.lineMaterial );\n\t\t\t\t\t\tline.applyMatrix4( instances[ i ].matrices[ j ] );\n\t\t\t\t\t\tscene.add( line );\n\n\t\t\t\t\t}\n\n\t\t\t\t} else if ( templatesGeomData[ i ].geometryType == POINTS ) {\n\n\t\t\t\t\tfor ( let j = 0; j < instances[ i ].matrices.length; j ++ ) {\n\n\t\t\t\t\t\ttemplatesGeomData[ i ].setObjectId( instances[ i ].objectIds[ j ] );\n\t\t\t\t\t\ttemplatesGeomData[ i ].setObjectType( instances[ i ].objectType[ j ] );\n\t\t\t\t\t\ttemplatesGeomData[ i ].setGeometryIdx( instances[ i ].geometryIds[ j ] );\n\n\t\t\t\t\t\tconst line = new CityObjectsPoints( templatesGeomData[ i ].getVertices( vertices ), templatesGeomData[ i ], this.matrix, this.pointsMaterial );\n\t\t\t\t\t\tline.applyMatrix4( instances[ i ].matrices[ j ] );\n\t\t\t\t\t\tscene.add( line );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\n}\n","import { LineParser } from '../geometry/LineParser.js';\nimport { PointParser } from '../geometry/PointParser.js';\nimport { TriangleParser } from '../geometry/TriangleParser.js';\n\nexport class ChunkParser {\n\n\tconstructor() {\n\n\t\tthis.matrix = null;\n\t\tthis.chunkSize = 2000;\n\n\t\tthis.lods = [];\n\t\tthis.objectColors = {};\n\t\tthis.surfaceColors = {};\n\n\t\tthis.onchunkload = null;\n\t\tthis.onComplete = null;\n\n\t}\n\n\tparse( data ) {\n\n\t\tlet i = 0;\n\n\t\tconst geometryParsers = [\n\t\t\tnew TriangleParser( data, Object.keys( data.CityObjects ), this.objectColors ),\n\t\t\tnew LineParser( data, Object.keys( data.CityObjects ), this.objectColors ),\n\t\t\tnew PointParser( data, Object.keys( data.CityObjects ), this.objectColors )\n\t\t];\n\n\t\tfor ( const objectId in data.CityObjects ) {\n\n\t\t\tconst cityObject = data.CityObjects[ objectId ];\n\n\t\t\tif ( cityObject.geometry && cityObject.geometry.length > 0 ) {\n\n\t\t\t\tfor ( let geom_i = 0; geom_i < cityObject.geometry.length; geom_i ++ ) {\n\n\t\t\t\t\tfor ( const geometryParser of geometryParsers ) {\n\n\t\t\t\t\t\tgeometryParser.lods = this.lods;\n\t\t\t\t\t\tgeometryParser.parseGeometry( cityObject.geometry[ geom_i ], objectId, geom_i );\n\t\t\t\t\t\tthis.lods = geometryParser.lods;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tif ( i ++ > this.chunkSize ) {\n\n\t\t\t\tfor ( const geometryParser of geometryParsers ) {\n\n\t\t\t\t\tthis.returnObjects( geometryParser, data );\n\n\t\t\t\t\tgeometryParser.clean();\n\n\t\t\t\t}\n\n\t\t\t\ti = 0;\n\n\t\t\t}\n\n\t\t}\n\n\t\tfor ( const geometryParser of geometryParsers ) {\n\n\t\t\t// TODO: fix the \"finished\" flag here - probably better be a\n\t\t\t// different callback\n\t\t\tthis.returnObjects( geometryParser, data );\n\n\t\t\tgeometryParser.clean();\n\n\t\t}\n\n\t\t// TODO: this needs some fix - probably a common configuration class\n\t\t// shared between the parsers\n\t\tthis.objectColors = geometryParsers[ 0 ].objectColors;\n\t\tthis.surfaceColors = geometryParsers[ 0 ].surfaceColors;\n\n\t\tif ( this.onComplete ) {\n\n\t\t\tthis.onComplete();\n\n\t\t}\n\n\t}\n\n\treturnObjects( parser, data ) {\n\n\t\tif ( parser.geomData.count() > 0 ) {\n\n\t\t\tthis.onchunkload( parser.geomData.getVertices( data.vertices ),\n\t\t\t\t\t\t\t parser.geomData.toObject(),\n\t\t\t\t\t\t\t parser.lods,\n\t\t\t\t\t\t\t parser.objectColors,\n\t\t\t\t\t\t\t parser.surfaceColors );\n\n\t\t}\n\n\t}\n\n}\n","export class AttributeEvaluator {\n\n\tconstructor( citymodel, attributeName, includeNulls = false, checkParents = true, checkChildren = true ) {\n\n\t\tthis.citymodel = citymodel;\n\t\tthis.attributeName = attributeName;\n\n\t\tthis.includeNulls = includeNulls;\n\t\tthis.checkParents = checkParents;\n\t\tthis.checkChildren = checkChildren;\n\n\t\tthis.allValues = [];\n\t\tthis.uniqueValues = [];\n\n\t}\n\n\tgetAttributeValue( objectId, checkParent = true, checkChildren = true ) {\n\n\t\tconst cityobject = this.citymodel.CityObjects[ objectId ];\n\n\t\tif ( cityobject.attributes && cityobject.attributes[ this.attributeName ] !== undefined ) {\n\n\t\t\treturn cityobject.attributes[ this.attributeName ];\n\n\t\t}\n\n\t\tif ( checkParent && cityobject.parents ) {\n\n\t\t\tfor ( const parentId of cityobject.parents ) {\n\n\t\t\t\treturn this.getAttributeValue( parentId, true, false );\n\n\t\t\t}\n\n\t\t}\n\n\t\tif ( checkChildren && cityobject.children || cityobject.members ) {\n\n\t\t\tconst children = cityobject.children ? cityobject.children : cityobject.members;\n\n\t\t\tfor ( const childId of children ) {\n\n\t\t\t\treturn this.getAttributeValue( childId, false, true );\n\n\t\t\t}\n\n\t\t}\n\n\t\treturn null;\n\n\t}\n\n\tgetAllValues() {\n\n\t\tif ( this.allValues.length == 0 ) {\n\n\t\t\tconst allValues = [];\n\n\t\t\tfor ( const objId in this.citymodel.CityObjects ) {\n\n\t\t\t\tallValues.push( String( this.getAttributeValue( objId, this.checkParents, this.checkChildren ) ) );\n\n\t\t\t}\n\n\t\t\tthis.allValues = allValues;\n\n\t\t}\n\n\t\treturn this.allValues;\n\n\t}\n\n\tgetUniqueValues() {\n\n\t\tif ( this.uniqueValues.length == 0 ) {\n\n\t\t\tconst uniqueValues = new Set( this.getAllValues() );\n\n\t\t\tif ( ! this.includeNulls ) {\n\n\t\t\t\tuniqueValues.delete( null );\n\n\t\t\t}\n\n\t\t\t// This is a weird hack, but it's because sorting of keys is different\n\t\t\t// than sorting the values in any logical way. So we create a fake\n\t\t\t// object and just take its keys with the order that JS decides to\n\t\t\t// sort them.\n\n\t\t\tconst colors = {};\n\n\t\t\tfor ( const value of [ ...uniqueValues ].sort() ) {\n\n\t\t\t\tcolors[ value ] = '';\n\n\t\t\t}\n\n\t\t\tthis.uniqueValues = Object.keys( colors );\n\n\t\t}\n\n\t\treturn this.uniqueValues;\n\n\t}\n\n\tcreateColors() {\n\n\t\tconst uniqueValues = this.getUniqueValues();\n\t\tconst colors = {};\n\n\t\tfor ( const value of uniqueValues ) {\n\n\t\t\tcolors[ value ] = Math.floor( Math.random() * 0xffffff );\n\n\t\t}\n\n\t\treturn colors;\n\n\t}\n\n}\n","import { Texture, ShaderLib, RepeatWrapping, TextureLoader, SRGBColorSpace } from \"three\";\nimport { CityObjectsMaterial } from \"../materials/CityObjectsMaterial\";\n\nexport class TextureManager {\n\n\tconstructor( citymodel ) {\n\n\t\tif ( citymodel.appearance && citymodel.appearance.textures ) {\n\n\t\t\tthis.cityTextures = citymodel.appearance.textures;\n\n\t\t} else {\n\n\t\t\tthis.cityTextures = [];\n\n\t\t}\n\n\t\tthis.textures = [];\n\t\tthis.materials = [];\n\n\t\tthis.needsUpdate = false;\n\t\tthis.onChange = null;\n\n\t\tthis.loadFromUrl();\n\n\t}\n\n\tget totalTextures() {\n\n\t\treturn this.cityTextures.length;\n\n\t}\n\n\tget resolvedTextures() {\n\n\t\treturn this.textures.filter( t => t ).length;\n\n\t}\n\n\tgetMaterials( baseMaterial ) {\n\n\t\tif ( this.materials.length === 0 || this.needsUpdate ) {\n\n\t\t\tconst materials = [];\n\n\t\t\tfor ( let i = 0; i < this.cityTextures.length; i ++ ) {\n\n\t\t\t\tif ( this.textures[ i ] ) {\n\n\t\t\t\t\tconst mat = new CityObjectsMaterial( ShaderLib.lambert, {\n\t\t\t\t\t\tobjectColors: baseMaterial.objectColors,\n\t\t\t\t\t\tsurfaceColors: baseMaterial.surfaceColors,\n\t\t\t\t\t\ttransparent: true\n\t\t\t\t\t} );\n\n\t\t\t\t\tmat.uniforms.cityTexture.value = this.textures[ i ];\n\t\t\t\t\tmat.needsUpdate = true;\n\n\t\t\t\t\tmaterials.push( mat );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tmaterials.push( baseMaterial );\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tfor ( const mat of this.materials ) {\n\n\t\t\t\tif ( mat !== baseMaterial ) {\n\n\t\t\t\t\tmat.dispose();\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\tthis.materials = materials;\n\n\t\t\tthis.needsUpdate = false;\n\n\t\t}\n\n\t\treturn [ ...this.materials, baseMaterial ];\n\n\t}\n\n\tsetTextureFromUrl( i, url ) {\n\n\t\tconst context = this;\n\n\t\tnew TextureLoader().load( url, ( tex => {\n\n\t\t\ttex.encoding = SRGBColorSpace;\n\t\t\ttex.wrapS = RepeatWrapping;\n\t\t\ttex.wrapT = RepeatWrapping;\n\n\t\t\tcontext.textures[ i ] = tex;\n\n\t\t\tthis.needsUpdate = true;\n\t\t\tif ( this.onChange ) {\n\n\t\t\t\tthis.onChange();\n\n\t\t\t}\n\n\t\t} ) );\n\n\t}\n\n\tloadFromUrl() {\n\n\t\tthis.textures = [];\n\n\t\tfor ( const [ i, texture ] of this.cityTextures.entries() ) {\n\n\t\t\tthis.setTextureFromUrl( i, texture.image );\n\n\t\t}\n\n\t}\n\n\tsetTextureFromFile( file ) {\n\n\t\tconst context = this;\n\n\t\tfor ( const [ i, texture ] of this.cityTextures.entries() ) {\n\n\t\t\tif ( texture.image.includes( file.name ) ) {\n\n\t\t\t\tconst reader = new FileReader();\n\n\t\t\t\treader.onload = event => {\n\n\t\t\t\t\tconst img = new Image();\n\n\t\t\t\t\timg.onload = evt => {\n\n\t\t\t\t\t\tconst tex = new Texture( evt.target );\n\n\t\t\t\t\t\ttex.encoding = sRGBEncoding;\n\t\t\t\t\t\ttex.wrapS = RepeatWrapping;\n\t\t\t\t\t\ttex.wrapT = RepeatWrapping;\n\t\t\t\t\t\ttex.needsUpdate = true;\n\n\t\t\t\t\t\tcontext.textures[ i ] = tex;\n\n\t\t\t\t\t\tthis.needsUpdate = true;\n\t\t\t\t\t\tif ( this.onChange ) {\n\n\t\t\t\t\t\t\tthis.onChange();\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t};\n\n\t\t\t\t\timg.src = event.target.result;\n\n\t\t\t\t};\n\n\t\t\t\treader.readAsDataURL( file );\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n}\n","\n\n\n","\n\n\n","/*!\n * jQuery JavaScript Library v3.7.1\n * https://jquery.com/\n *\n * Copyright OpenJS Foundation and other contributors\n * Released under the MIT license\n * https://jquery.org/license\n *\n * Date: 2023-08-28T13:37Z\n */\n( function( global, factory ) {\n\n\t\"use strict\";\n\n\tif ( typeof module === \"object\" && typeof module.exports === \"object\" ) {\n\n\t\t// For CommonJS and CommonJS-like environments where a proper `window`\n\t\t// is present, execute the factory and get jQuery.\n\t\t// For environments that do not have a `window` with a `document`\n\t\t// (such as Node.js), expose a factory as module.exports.\n\t\t// This accentuates the need for the creation of a real `window`.\n\t\t// e.g. var jQuery = require(\"jquery\")(window);\n\t\t// See ticket trac-14549 for more info.\n\t\tmodule.exports = global.document ?\n\t\t\tfactory( global, true ) :\n\t\t\tfunction( w ) {\n\t\t\t\tif ( !w.document ) {\n\t\t\t\t\tthrow new Error( \"jQuery requires a window with a document\" );\n\t\t\t\t}\n\t\t\t\treturn factory( w );\n\t\t\t};\n\t} else {\n\t\tfactory( global );\n\t}\n\n// Pass this if window is not defined yet\n} )( typeof window !== \"undefined\" ? window : this, function( window, noGlobal ) {\n\n// Edge <= 12 - 13+, Firefox <=18 - 45+, IE 10 - 11, Safari 5.1 - 9+, iOS 6 - 9.1\n// throw exceptions when non-strict code (e.g., ASP.NET 4.5) accesses strict mode\n// arguments.callee.caller (trac-13335). But as of jQuery 3.0 (2016), strict mode should be common\n// enough that all such attempts are guarded in a try block.\n\"use strict\";\n\nvar arr = [];\n\nvar getProto = Object.getPrototypeOf;\n\nvar slice = arr.slice;\n\nvar flat = arr.flat ? function( array ) {\n\treturn arr.flat.call( array );\n} : function( array ) {\n\treturn arr.concat.apply( [], array );\n};\n\n\nvar push = arr.push;\n\nvar indexOf = arr.indexOf;\n\nvar class2type = {};\n\nvar toString = class2type.toString;\n\nvar hasOwn = class2type.hasOwnProperty;\n\nvar fnToString = hasOwn.toString;\n\nvar ObjectFunctionString = fnToString.call( Object );\n\nvar support = {};\n\nvar isFunction = function isFunction( obj ) {\n\n\t\t// Support: Chrome <=57, Firefox <=52\n\t\t// In some browsers, typeof returns \"function\" for HTML elements\n\t\t// (i.e., `typeof document.createElement( \"object\" ) === \"function\"`).\n\t\t// We don't want to classify *any* DOM node as a function.\n\t\t// Support: QtWeb <=3.8.5, WebKit <=534.34, wkhtmltopdf tool <=0.12.5\n\t\t// Plus for old WebKit, typeof returns \"function\" for HTML collections\n\t\t// (e.g., `typeof document.getElementsByTagName(\"div\") === \"function\"`). (gh-4756)\n\t\treturn typeof obj === \"function\" && typeof obj.nodeType !== \"number\" &&\n\t\t\ttypeof obj.item !== \"function\";\n\t};\n\n\nvar isWindow = function isWindow( obj ) {\n\t\treturn obj != null && obj === obj.window;\n\t};\n\n\nvar document = window.document;\n\n\n\n\tvar preservedScriptAttributes = {\n\t\ttype: true,\n\t\tsrc: true,\n\t\tnonce: true,\n\t\tnoModule: true\n\t};\n\n\tfunction DOMEval( code, node, doc ) {\n\t\tdoc = doc || document;\n\n\t\tvar i, val,\n\t\t\tscript = doc.createElement( \"script\" );\n\n\t\tscript.text = code;\n\t\tif ( node ) {\n\t\t\tfor ( i in preservedScriptAttributes ) {\n\n\t\t\t\t// Support: Firefox 64+, Edge 18+\n\t\t\t\t// Some browsers don't support the \"nonce\" property on scripts.\n\t\t\t\t// On the other hand, just using `getAttribute` is not enough as\n\t\t\t\t// the `nonce` attribute is reset to an empty string whenever it\n\t\t\t\t// becomes browsing-context connected.\n\t\t\t\t// See https://github.com/whatwg/html/issues/2369\n\t\t\t\t// See https://html.spec.whatwg.org/#nonce-attributes\n\t\t\t\t// The `node.getAttribute` check was added for the sake of\n\t\t\t\t// `jQuery.globalEval` so that it can fake a nonce-containing node\n\t\t\t\t// via an object.\n\t\t\t\tval = node[ i ] || node.getAttribute && node.getAttribute( i );\n\t\t\t\tif ( val ) {\n\t\t\t\t\tscript.setAttribute( i, val );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t\tdoc.head.appendChild( script ).parentNode.removeChild( script );\n\t}\n\n\nfunction toType( obj ) {\n\tif ( obj == null ) {\n\t\treturn obj + \"\";\n\t}\n\n\t// Support: Android <=2.3 only (functionish RegExp)\n\treturn typeof obj === \"object\" || typeof obj === \"function\" ?\n\t\tclass2type[ toString.call( obj ) ] || \"object\" :\n\t\ttypeof obj;\n}\n/* global Symbol */\n// Defining this global in .eslintrc.json would create a danger of using the global\n// unguarded in another place, it seems safer to define global only for this module\n\n\n\nvar version = \"3.7.1\",\n\n\trhtmlSuffix = /HTML$/i,\n\n\t// Define a local copy of jQuery\n\tjQuery = function( selector, context ) {\n\n\t\t// The jQuery object is actually just the init constructor 'enhanced'\n\t\t// Need init if jQuery is called (just allow error to be thrown if not included)\n\t\treturn new jQuery.fn.init( selector, context );\n\t};\n\njQuery.fn = jQuery.prototype = {\n\n\t// The current version of jQuery being used\n\tjquery: version,\n\n\tconstructor: jQuery,\n\n\t// The default length of a jQuery object is 0\n\tlength: 0,\n\n\ttoArray: function() {\n\t\treturn slice.call( this );\n\t},\n\n\t// Get the Nth element in the matched element set OR\n\t// Get the whole matched element set as a clean array\n\tget: function( num ) {\n\n\t\t// Return all the elements in a clean array\n\t\tif ( num == null ) {\n\t\t\treturn slice.call( this );\n\t\t}\n\n\t\t// Return just the one element from the set\n\t\treturn num < 0 ? this[ num + this.length ] : this[ num ];\n\t},\n\n\t// Take an array of elements and push it onto the stack\n\t// (returning the new matched element set)\n\tpushStack: function( elems ) {\n\n\t\t// Build a new jQuery matched element set\n\t\tvar ret = jQuery.merge( this.constructor(), elems );\n\n\t\t// Add the old object onto the stack (as a reference)\n\t\tret.prevObject = this;\n\n\t\t// Return the newly-formed element set\n\t\treturn ret;\n\t},\n\n\t// Execute a callback for every element in the matched set.\n\teach: function( callback ) {\n\t\treturn jQuery.each( this, callback );\n\t},\n\n\tmap: function( callback ) {\n\t\treturn this.pushStack( jQuery.map( this, function( elem, i ) {\n\t\t\treturn callback.call( elem, i, elem );\n\t\t} ) );\n\t},\n\n\tslice: function() {\n\t\treturn this.pushStack( slice.apply( this, arguments ) );\n\t},\n\n\tfirst: function() {\n\t\treturn this.eq( 0 );\n\t},\n\n\tlast: function() {\n\t\treturn this.eq( -1 );\n\t},\n\n\teven: function() {\n\t\treturn this.pushStack( jQuery.grep( this, function( _elem, i ) {\n\t\t\treturn ( i + 1 ) % 2;\n\t\t} ) );\n\t},\n\n\todd: function() {\n\t\treturn this.pushStack( jQuery.grep( this, function( _elem, i ) {\n\t\t\treturn i % 2;\n\t\t} ) );\n\t},\n\n\teq: function( i ) {\n\t\tvar len = this.length,\n\t\t\tj = +i + ( i < 0 ? len : 0 );\n\t\treturn this.pushStack( j >= 0 && j < len ? [ this[ j ] ] : [] );\n\t},\n\n\tend: function() {\n\t\treturn this.prevObject || this.constructor();\n\t},\n\n\t// For internal use only.\n\t// Behaves like an Array's method, not like a jQuery method.\n\tpush: push,\n\tsort: arr.sort,\n\tsplice: arr.splice\n};\n\njQuery.extend = jQuery.fn.extend = function() {\n\tvar options, name, src, copy, copyIsArray, clone,\n\t\ttarget = arguments[ 0 ] || {},\n\t\ti = 1,\n\t\tlength = arguments.length,\n\t\tdeep = false;\n\n\t// Handle a deep copy situation\n\tif ( typeof target === \"boolean\" ) {\n\t\tdeep = target;\n\n\t\t// Skip the boolean and the target\n\t\ttarget = arguments[ i ] || {};\n\t\ti++;\n\t}\n\n\t// Handle case when target is a string or something (possible in deep copy)\n\tif ( typeof target !== \"object\" && !isFunction( target ) ) {\n\t\ttarget = {};\n\t}\n\n\t// Extend jQuery itself if only one argument is passed\n\tif ( i === length ) {\n\t\ttarget = this;\n\t\ti--;\n\t}\n\n\tfor ( ; i < length; i++ ) {\n\n\t\t// Only deal with non-null/undefined values\n\t\tif ( ( options = arguments[ i ] ) != null ) {\n\n\t\t\t// Extend the base object\n\t\t\tfor ( name in options ) {\n\t\t\t\tcopy = options[ name ];\n\n\t\t\t\t// Prevent Object.prototype pollution\n\t\t\t\t// Prevent never-ending loop\n\t\t\t\tif ( name === \"__proto__\" || target === copy ) {\n\t\t\t\t\tcontinue;\n\t\t\t\t}\n\n\t\t\t\t// Recurse if we're merging plain objects or arrays\n\t\t\t\tif ( deep && copy && ( jQuery.isPlainObject( copy ) ||\n\t\t\t\t\t( copyIsArray = Array.isArray( copy ) ) ) ) {\n\t\t\t\t\tsrc = target[ name ];\n\n\t\t\t\t\t// Ensure proper type for the source value\n\t\t\t\t\tif ( copyIsArray && !Array.isArray( src ) ) {\n\t\t\t\t\t\tclone = [];\n\t\t\t\t\t} else if ( !copyIsArray && !jQuery.isPlainObject( src ) ) {\n\t\t\t\t\t\tclone = {};\n\t\t\t\t\t} else {\n\t\t\t\t\t\tclone = src;\n\t\t\t\t\t}\n\t\t\t\t\tcopyIsArray = false;\n\n\t\t\t\t\t// Never move original objects, clone them\n\t\t\t\t\ttarget[ name ] = jQuery.extend( deep, clone, copy );\n\n\t\t\t\t// Don't bring in undefined values\n\t\t\t\t} else if ( copy !== undefined ) {\n\t\t\t\t\ttarget[ name ] = copy;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\t// Return the modified object\n\treturn target;\n};\n\njQuery.extend( {\n\n\t// Unique for each copy of jQuery on the page\n\texpando: \"jQuery\" + ( version + Math.random() ).replace( /\\D/g, \"\" ),\n\n\t// Assume jQuery is ready without the ready module\n\tisReady: true,\n\n\terror: function( msg ) {\n\t\tthrow new Error( msg );\n\t},\n\n\tnoop: function() {},\n\n\tisPlainObject: function( obj ) {\n\t\tvar proto, Ctor;\n\n\t\t// Detect obvious negatives\n\t\t// Use toString instead of jQuery.type to catch host objects\n\t\tif ( !obj || toString.call( obj ) !== \"[object Object]\" ) {\n\t\t\treturn false;\n\t\t}\n\n\t\tproto = getProto( obj );\n\n\t\t// Objects with no prototype (e.g., `Object.create( null )`) are plain\n\t\tif ( !proto ) {\n\t\t\treturn true;\n\t\t}\n\n\t\t// Objects with prototype are plain iff they were constructed by a global Object function\n\t\tCtor = hasOwn.call( proto, \"constructor\" ) && proto.constructor;\n\t\treturn typeof Ctor === \"function\" && fnToString.call( Ctor ) === ObjectFunctionString;\n\t},\n\n\tisEmptyObject: function( obj ) {\n\t\tvar name;\n\n\t\tfor ( name in obj ) {\n\t\t\treturn false;\n\t\t}\n\t\treturn true;\n\t},\n\n\t// Evaluates a script in a provided context; falls back to the global one\n\t// if not specified.\n\tglobalEval: function( code, options, doc ) {\n\t\tDOMEval( code, { nonce: options && options.nonce }, doc );\n\t},\n\n\teach: function( obj, callback ) {\n\t\tvar length, i = 0;\n\n\t\tif ( isArrayLike( obj ) ) {\n\t\t\tlength = obj.length;\n\t\t\tfor ( ; i < length; i++ ) {\n\t\t\t\tif ( callback.call( obj[ i ], i, obj[ i ] ) === false ) {\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t}\n\t\t} else {\n\t\t\tfor ( i in obj ) {\n\t\t\t\tif ( callback.call( obj[ i ], i, obj[ i ] ) === false ) {\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn obj;\n\t},\n\n\n\t// Retrieve the text value of an array of DOM nodes\n\ttext: function( elem ) {\n\t\tvar node,\n\t\t\tret = \"\",\n\t\t\ti = 0,\n\t\t\tnodeType = elem.nodeType;\n\n\t\tif ( !nodeType ) {\n\n\t\t\t// If no nodeType, this is expected to be an array\n\t\t\twhile ( ( node = elem[ i++ ] ) ) {\n\n\t\t\t\t// Do not traverse comment nodes\n\t\t\t\tret += jQuery.text( node );\n\t\t\t}\n\t\t}\n\t\tif ( nodeType === 1 || nodeType === 11 ) {\n\t\t\treturn elem.textContent;\n\t\t}\n\t\tif ( nodeType === 9 ) {\n\t\t\treturn elem.documentElement.textContent;\n\t\t}\n\t\tif ( nodeType === 3 || nodeType === 4 ) {\n\t\t\treturn elem.nodeValue;\n\t\t}\n\n\t\t// Do not include comment or processing instruction nodes\n\n\t\treturn ret;\n\t},\n\n\t// results is for internal usage only\n\tmakeArray: function( arr, results ) {\n\t\tvar ret = results || [];\n\n\t\tif ( arr != null ) {\n\t\t\tif ( isArrayLike( Object( arr ) ) ) {\n\t\t\t\tjQuery.merge( ret,\n\t\t\t\t\ttypeof arr === \"string\" ?\n\t\t\t\t\t\t[ arr ] : arr\n\t\t\t\t);\n\t\t\t} else {\n\t\t\t\tpush.call( ret, arr );\n\t\t\t}\n\t\t}\n\n\t\treturn ret;\n\t},\n\n\tinArray: function( elem, arr, i ) {\n\t\treturn arr == null ? -1 : indexOf.call( arr, elem, i );\n\t},\n\n\tisXMLDoc: function( elem ) {\n\t\tvar namespace = elem && elem.namespaceURI,\n\t\t\tdocElem = elem && ( elem.ownerDocument || elem ).documentElement;\n\n\t\t// Assume HTML when documentElement doesn't yet exist, such as inside\n\t\t// document fragments.\n\t\treturn !rhtmlSuffix.test( namespace || docElem && docElem.nodeName || \"HTML\" );\n\t},\n\n\t// Support: Android <=4.0 only, PhantomJS 1 only\n\t// push.apply(_, arraylike) throws on ancient WebKit\n\tmerge: function( first, second ) {\n\t\tvar len = +second.length,\n\t\t\tj = 0,\n\t\t\ti = first.length;\n\n\t\tfor ( ; j < len; j++ ) {\n\t\t\tfirst[ i++ ] = second[ j ];\n\t\t}\n\n\t\tfirst.length = i;\n\n\t\treturn first;\n\t},\n\n\tgrep: function( elems, callback, invert ) {\n\t\tvar callbackInverse,\n\t\t\tmatches = [],\n\t\t\ti = 0,\n\t\t\tlength = elems.length,\n\t\t\tcallbackExpect = !invert;\n\n\t\t// Go through the array, only saving the items\n\t\t// that pass the validator function\n\t\tfor ( ; i < length; i++ ) {\n\t\t\tcallbackInverse = !callback( elems[ i ], i );\n\t\t\tif ( callbackInverse !== callbackExpect ) {\n\t\t\t\tmatches.push( elems[ i ] );\n\t\t\t}\n\t\t}\n\n\t\treturn matches;\n\t},\n\n\t// arg is for internal usage only\n\tmap: function( elems, callback, arg ) {\n\t\tvar length, value,\n\t\t\ti = 0,\n\t\t\tret = [];\n\n\t\t// Go through the array, translating each of the items to their new values\n\t\tif ( isArrayLike( elems ) ) {\n\t\t\tlength = elems.length;\n\t\t\tfor ( ; i < length; i++ ) {\n\t\t\t\tvalue = callback( elems[ i ], i, arg );\n\n\t\t\t\tif ( value != null ) {\n\t\t\t\t\tret.push( value );\n\t\t\t\t}\n\t\t\t}\n\n\t\t// Go through every key on the object,\n\t\t} else {\n\t\t\tfor ( i in elems ) {\n\t\t\t\tvalue = callback( elems[ i ], i, arg );\n\n\t\t\t\tif ( value != null ) {\n\t\t\t\t\tret.push( value );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t// Flatten any nested arrays\n\t\treturn flat( ret );\n\t},\n\n\t// A global GUID counter for objects\n\tguid: 1,\n\n\t// jQuery.support is not used in Core but other projects attach their\n\t// properties to it so it needs to exist.\n\tsupport: support\n} );\n\nif ( typeof Symbol === \"function\" ) {\n\tjQuery.fn[ Symbol.iterator ] = arr[ Symbol.iterator ];\n}\n\n// Populate the class2type map\njQuery.each( \"Boolean Number String Function Array Date RegExp Object Error Symbol\".split( \" \" ),\n\tfunction( _i, name ) {\n\t\tclass2type[ \"[object \" + name + \"]\" ] = name.toLowerCase();\n\t} );\n\nfunction isArrayLike( obj ) {\n\n\t// Support: real iOS 8.2 only (not reproducible in simulator)\n\t// `in` check used to prevent JIT error (gh-2145)\n\t// hasOwn isn't used here due to false negatives\n\t// regarding Nodelist length in IE\n\tvar length = !!obj && \"length\" in obj && obj.length,\n\t\ttype = toType( obj );\n\n\tif ( isFunction( obj ) || isWindow( obj ) ) {\n\t\treturn false;\n\t}\n\n\treturn type === \"array\" || length === 0 ||\n\t\ttypeof length === \"number\" && length > 0 && ( length - 1 ) in obj;\n}\n\n\nfunction nodeName( elem, name ) {\n\n\treturn elem.nodeName && elem.nodeName.toLowerCase() === name.toLowerCase();\n\n}\nvar pop = arr.pop;\n\n\nvar sort = arr.sort;\n\n\nvar splice = arr.splice;\n\n\nvar whitespace = \"[\\\\x20\\\\t\\\\r\\\\n\\\\f]\";\n\n\nvar rtrimCSS = new RegExp(\n\t\"^\" + whitespace + \"+|((?:^|[^\\\\\\\\])(?:\\\\\\\\.)*)\" + whitespace + \"+$\",\n\t\"g\"\n);\n\n\n\n\n// Note: an element does not contain itself\njQuery.contains = function( a, b ) {\n\tvar bup = b && b.parentNode;\n\n\treturn a === bup || !!( bup && bup.nodeType === 1 && (\n\n\t\t// Support: IE 9 - 11+\n\t\t// IE doesn't have `contains` on SVG.\n\t\ta.contains ?\n\t\t\ta.contains( bup ) :\n\t\t\ta.compareDocumentPosition && a.compareDocumentPosition( bup ) & 16\n\t) );\n};\n\n\n\n\n// CSS string/identifier serialization\n// https://drafts.csswg.org/cssom/#common-serializing-idioms\nvar rcssescape = /([\\0-\\x1f\\x7f]|^-?\\d)|^-$|[^\\x80-\\uFFFF\\w-]/g;\n\nfunction fcssescape( ch, asCodePoint ) {\n\tif ( asCodePoint ) {\n\n\t\t// U+0000 NULL becomes U+FFFD REPLACEMENT CHARACTER\n\t\tif ( ch === \"\\0\" ) {\n\t\t\treturn \"\\uFFFD\";\n\t\t}\n\n\t\t// Control characters and (dependent upon position) numbers get escaped as code points\n\t\treturn ch.slice( 0, -1 ) + \"\\\\\" + ch.charCodeAt( ch.length - 1 ).toString( 16 ) + \" \";\n\t}\n\n\t// Other potentially-special ASCII characters get backslash-escaped\n\treturn \"\\\\\" + ch;\n}\n\njQuery.escapeSelector = function( sel ) {\n\treturn ( sel + \"\" ).replace( rcssescape, fcssescape );\n};\n\n\n\n\nvar preferredDoc = document,\n\tpushNative = push;\n\n( function() {\n\nvar i,\n\tExpr,\n\toutermostContext,\n\tsortInput,\n\thasDuplicate,\n\tpush = pushNative,\n\n\t// Local document vars\n\tdocument,\n\tdocumentElement,\n\tdocumentIsHTML,\n\trbuggyQSA,\n\tmatches,\n\n\t// Instance-specific data\n\texpando = jQuery.expando,\n\tdirruns = 0,\n\tdone = 0,\n\tclassCache = createCache(),\n\ttokenCache = createCache(),\n\tcompilerCache = createCache(),\n\tnonnativeSelectorCache = createCache(),\n\tsortOrder = function( a, b ) {\n\t\tif ( a === b ) {\n\t\t\thasDuplicate = true;\n\t\t}\n\t\treturn 0;\n\t},\n\n\tbooleans = \"checked|selected|async|autofocus|autoplay|controls|defer|disabled|hidden|ismap|\" +\n\t\t\"loop|multiple|open|readonly|required|scoped\",\n\n\t// Regular expressions\n\n\t// https://www.w3.org/TR/css-syntax-3/#ident-token-diagram\n\tidentifier = \"(?:\\\\\\\\[\\\\da-fA-F]{1,6}\" + whitespace +\n\t\t\"?|\\\\\\\\[^\\\\r\\\\n\\\\f]|[\\\\w-]|[^\\0-\\\\x7f])+\",\n\n\t// Attribute selectors: https://www.w3.org/TR/selectors/#attribute-selectors\n\tattributes = \"\\\\[\" + whitespace + \"*(\" + identifier + \")(?:\" + whitespace +\n\n\t\t// Operator (capture 2)\n\t\t\"*([*^$|!~]?=)\" + whitespace +\n\n\t\t// \"Attribute values must be CSS identifiers [capture 5] or strings [capture 3 or capture 4]\"\n\t\t\"*(?:'((?:\\\\\\\\.|[^\\\\\\\\'])*)'|\\\"((?:\\\\\\\\.|[^\\\\\\\\\\\"])*)\\\"|(\" + identifier + \"))|)\" +\n\t\twhitespace + \"*\\\\]\",\n\n\tpseudos = \":(\" + identifier + \")(?:\\\\((\" +\n\n\t\t// To reduce the number of selectors needing tokenize in the preFilter, prefer arguments:\n\t\t// 1. quoted (capture 3; capture 4 or capture 5)\n\t\t\"('((?:\\\\\\\\.|[^\\\\\\\\'])*)'|\\\"((?:\\\\\\\\.|[^\\\\\\\\\\\"])*)\\\")|\" +\n\n\t\t// 2. simple (capture 6)\n\t\t\"((?:\\\\\\\\.|[^\\\\\\\\()[\\\\]]|\" + attributes + \")*)|\" +\n\n\t\t// 3. anything else (capture 2)\n\t\t\".*\" +\n\t\t\")\\\\)|)\",\n\n\t// Leading and non-escaped trailing whitespace, capturing some non-whitespace characters preceding the latter\n\trwhitespace = new RegExp( whitespace + \"+\", \"g\" ),\n\n\trcomma = new RegExp( \"^\" + whitespace + \"*,\" + whitespace + \"*\" ),\n\trleadingCombinator = new RegExp( \"^\" + whitespace + \"*([>+~]|\" + whitespace + \")\" +\n\t\twhitespace + \"*\" ),\n\trdescend = new RegExp( whitespace + \"|>\" ),\n\n\trpseudo = new RegExp( pseudos ),\n\tridentifier = new RegExp( \"^\" + identifier + \"$\" ),\n\n\tmatchExpr = {\n\t\tID: new RegExp( \"^#(\" + identifier + \")\" ),\n\t\tCLASS: new RegExp( \"^\\\\.(\" + identifier + \")\" ),\n\t\tTAG: new RegExp( \"^(\" + identifier + \"|[*])\" ),\n\t\tATTR: new RegExp( \"^\" + attributes ),\n\t\tPSEUDO: new RegExp( \"^\" + pseudos ),\n\t\tCHILD: new RegExp(\n\t\t\t\"^:(only|first|last|nth|nth-last)-(child|of-type)(?:\\\\(\" +\n\t\t\t\twhitespace + \"*(even|odd|(([+-]|)(\\\\d*)n|)\" + whitespace + \"*(?:([+-]|)\" +\n\t\t\t\twhitespace + \"*(\\\\d+)|))\" + whitespace + \"*\\\\)|)\", \"i\" ),\n\t\tbool: new RegExp( \"^(?:\" + booleans + \")$\", \"i\" ),\n\n\t\t// For use in libraries implementing .is()\n\t\t// We use this for POS matching in `select`\n\t\tneedsContext: new RegExp( \"^\" + whitespace +\n\t\t\t\"*[>+~]|:(even|odd|eq|gt|lt|nth|first|last)(?:\\\\(\" + whitespace +\n\t\t\t\"*((?:-\\\\d)?\\\\d*)\" + whitespace + \"*\\\\)|)(?=[^-]|$)\", \"i\" )\n\t},\n\n\trinputs = /^(?:input|select|textarea|button)$/i,\n\trheader = /^h\\d$/i,\n\n\t// Easily-parseable/retrievable ID or TAG or CLASS selectors\n\trquickExpr = /^(?:#([\\w-]+)|(\\w+)|\\.([\\w-]+))$/,\n\n\trsibling = /[+~]/,\n\n\t// CSS escapes\n\t// https://www.w3.org/TR/CSS21/syndata.html#escaped-characters\n\trunescape = new RegExp( \"\\\\\\\\[\\\\da-fA-F]{1,6}\" + whitespace +\n\t\t\"?|\\\\\\\\([^\\\\r\\\\n\\\\f])\", \"g\" ),\n\tfunescape = function( escape, nonHex ) {\n\t\tvar high = \"0x\" + escape.slice( 1 ) - 0x10000;\n\n\t\tif ( nonHex ) {\n\n\t\t\t// Strip the backslash prefix from a non-hex escape sequence\n\t\t\treturn nonHex;\n\t\t}\n\n\t\t// Replace a hexadecimal escape sequence with the encoded Unicode code point\n\t\t// Support: IE <=11+\n\t\t// For values outside the Basic Multilingual Plane (BMP), manually construct a\n\t\t// surrogate pair\n\t\treturn high < 0 ?\n\t\t\tString.fromCharCode( high + 0x10000 ) :\n\t\t\tString.fromCharCode( high >> 10 | 0xD800, high & 0x3FF | 0xDC00 );\n\t},\n\n\t// Used for iframes; see `setDocument`.\n\t// Support: IE 9 - 11+, Edge 12 - 18+\n\t// Removing the function wrapper causes a \"Permission Denied\"\n\t// error in IE/Edge.\n\tunloadHandler = function() {\n\t\tsetDocument();\n\t},\n\n\tinDisabledFieldset = addCombinator(\n\t\tfunction( elem ) {\n\t\t\treturn elem.disabled === true && nodeName( elem, \"fieldset\" );\n\t\t},\n\t\t{ dir: \"parentNode\", next: \"legend\" }\n\t);\n\n// Support: IE <=9 only\n// Accessing document.activeElement can throw unexpectedly\n// https://bugs.jquery.com/ticket/13393\nfunction safeActiveElement() {\n\ttry {\n\t\treturn document.activeElement;\n\t} catch ( err ) { }\n}\n\n// Optimize for push.apply( _, NodeList )\ntry {\n\tpush.apply(\n\t\t( arr = slice.call( preferredDoc.childNodes ) ),\n\t\tpreferredDoc.childNodes\n\t);\n\n\t// Support: Android <=4.0\n\t// Detect silently failing push.apply\n\t// eslint-disable-next-line no-unused-expressions\n\tarr[ preferredDoc.childNodes.length ].nodeType;\n} catch ( e ) {\n\tpush = {\n\t\tapply: function( target, els ) {\n\t\t\tpushNative.apply( target, slice.call( els ) );\n\t\t},\n\t\tcall: function( target ) {\n\t\t\tpushNative.apply( target, slice.call( arguments, 1 ) );\n\t\t}\n\t};\n}\n\nfunction find( selector, context, results, seed ) {\n\tvar m, i, elem, nid, match, groups, newSelector,\n\t\tnewContext = context && context.ownerDocument,\n\n\t\t// nodeType defaults to 9, since context defaults to document\n\t\tnodeType = context ? context.nodeType : 9;\n\n\tresults = results || [];\n\n\t// Return early from calls with invalid selector or context\n\tif ( typeof selector !== \"string\" || !selector ||\n\t\tnodeType !== 1 && nodeType !== 9 && nodeType !== 11 ) {\n\n\t\treturn results;\n\t}\n\n\t// Try to shortcut find operations (as opposed to filters) in HTML documents\n\tif ( !seed ) {\n\t\tsetDocument( context );\n\t\tcontext = context || document;\n\n\t\tif ( documentIsHTML ) {\n\n\t\t\t// If the selector is sufficiently simple, try using a \"get*By*\" DOM method\n\t\t\t// (excepting DocumentFragment context, where the methods don't exist)\n\t\t\tif ( nodeType !== 11 && ( match = rquickExpr.exec( selector ) ) ) {\n\n\t\t\t\t// ID selector\n\t\t\t\tif ( ( m = match[ 1 ] ) ) {\n\n\t\t\t\t\t// Document context\n\t\t\t\t\tif ( nodeType === 9 ) {\n\t\t\t\t\t\tif ( ( elem = context.getElementById( m ) ) ) {\n\n\t\t\t\t\t\t\t// Support: IE 9 only\n\t\t\t\t\t\t\t// getElementById can match elements by name instead of ID\n\t\t\t\t\t\t\tif ( elem.id === m ) {\n\t\t\t\t\t\t\t\tpush.call( results, elem );\n\t\t\t\t\t\t\t\treturn results;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\treturn results;\n\t\t\t\t\t\t}\n\n\t\t\t\t\t// Element context\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\t// Support: IE 9 only\n\t\t\t\t\t\t// getElementById can match elements by name instead of ID\n\t\t\t\t\t\tif ( newContext && ( elem = newContext.getElementById( m ) ) &&\n\t\t\t\t\t\t\tfind.contains( context, elem ) &&\n\t\t\t\t\t\t\telem.id === m ) {\n\n\t\t\t\t\t\t\tpush.call( results, elem );\n\t\t\t\t\t\t\treturn results;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t// Type selector\n\t\t\t\t} else if ( match[ 2 ] ) {\n\t\t\t\t\tpush.apply( results, context.getElementsByTagName( selector ) );\n\t\t\t\t\treturn results;\n\n\t\t\t\t// Class selector\n\t\t\t\t} else if ( ( m = match[ 3 ] ) && context.getElementsByClassName ) {\n\t\t\t\t\tpush.apply( results, context.getElementsByClassName( m ) );\n\t\t\t\t\treturn results;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Take advantage of querySelectorAll\n\t\t\tif ( !nonnativeSelectorCache[ selector + \" \" ] &&\n\t\t\t\t( !rbuggyQSA || !rbuggyQSA.test( selector ) ) ) {\n\n\t\t\t\tnewSelector = selector;\n\t\t\t\tnewContext = context;\n\n\t\t\t\t// qSA considers elements outside a scoping root when evaluating child or\n\t\t\t\t// descendant combinators, which is not what we want.\n\t\t\t\t// In such cases, we work around the behavior by prefixing every selector in the\n\t\t\t\t// list with an ID selector referencing the scope context.\n\t\t\t\t// The technique has to be used as well when a leading combinator is used\n\t\t\t\t// as such selectors are not recognized by querySelectorAll.\n\t\t\t\t// Thanks to Andrew Dupont for this technique.\n\t\t\t\tif ( nodeType === 1 &&\n\t\t\t\t\t( rdescend.test( selector ) || rleadingCombinator.test( selector ) ) ) {\n\n\t\t\t\t\t// Expand context for sibling selectors\n\t\t\t\t\tnewContext = rsibling.test( selector ) && testContext( context.parentNode ) ||\n\t\t\t\t\t\tcontext;\n\n\t\t\t\t\t// We can use :scope instead of the ID hack if the browser\n\t\t\t\t\t// supports it & if we're not changing the context.\n\t\t\t\t\t// Support: IE 11+, Edge 17 - 18+\n\t\t\t\t\t// IE/Edge sometimes throw a \"Permission denied\" error when\n\t\t\t\t\t// strict-comparing two documents; shallow comparisons work.\n\t\t\t\t\t// eslint-disable-next-line eqeqeq\n\t\t\t\t\tif ( newContext != context || !support.scope ) {\n\n\t\t\t\t\t\t// Capture the context ID, setting it first if necessary\n\t\t\t\t\t\tif ( ( nid = context.getAttribute( \"id\" ) ) ) {\n\t\t\t\t\t\t\tnid = jQuery.escapeSelector( nid );\n\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\tcontext.setAttribute( \"id\", ( nid = expando ) );\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\t// Prefix every selector in the list\n\t\t\t\t\tgroups = tokenize( selector );\n\t\t\t\t\ti = groups.length;\n\t\t\t\t\twhile ( i-- ) {\n\t\t\t\t\t\tgroups[ i ] = ( nid ? \"#\" + nid : \":scope\" ) + \" \" +\n\t\t\t\t\t\t\ttoSelector( groups[ i ] );\n\t\t\t\t\t}\n\t\t\t\t\tnewSelector = groups.join( \",\" );\n\t\t\t\t}\n\n\t\t\t\ttry {\n\t\t\t\t\tpush.apply( results,\n\t\t\t\t\t\tnewContext.querySelectorAll( newSelector )\n\t\t\t\t\t);\n\t\t\t\t\treturn results;\n\t\t\t\t} catch ( qsaError ) {\n\t\t\t\t\tnonnativeSelectorCache( selector, true );\n\t\t\t\t} finally {\n\t\t\t\t\tif ( nid === expando ) {\n\t\t\t\t\t\tcontext.removeAttribute( \"id\" );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\t// All others\n\treturn select( selector.replace( rtrimCSS, \"$1\" ), context, results, seed );\n}\n\n/**\n * Create key-value caches of limited size\n * @returns {function(string, object)} Returns the Object data after storing it on itself with\n *\tproperty name the (space-suffixed) string and (if the cache is larger than Expr.cacheLength)\n *\tdeleting the oldest entry\n */\nfunction createCache() {\n\tvar keys = [];\n\n\tfunction cache( key, value ) {\n\n\t\t// Use (key + \" \") to avoid collision with native prototype properties\n\t\t// (see https://github.com/jquery/sizzle/issues/157)\n\t\tif ( keys.push( key + \" \" ) > Expr.cacheLength ) {\n\n\t\t\t// Only keep the most recent entries\n\t\t\tdelete cache[ keys.shift() ];\n\t\t}\n\t\treturn ( cache[ key + \" \" ] = value );\n\t}\n\treturn cache;\n}\n\n/**\n * Mark a function for special use by jQuery selector module\n * @param {Function} fn The function to mark\n */\nfunction markFunction( fn ) {\n\tfn[ expando ] = true;\n\treturn fn;\n}\n\n/**\n * Support testing using an element\n * @param {Function} fn Passed the created element and returns a boolean result\n */\nfunction assert( fn ) {\n\tvar el = document.createElement( \"fieldset\" );\n\n\ttry {\n\t\treturn !!fn( el );\n\t} catch ( e ) {\n\t\treturn false;\n\t} finally {\n\n\t\t// Remove from its parent by default\n\t\tif ( el.parentNode ) {\n\t\t\tel.parentNode.removeChild( el );\n\t\t}\n\n\t\t// release memory in IE\n\t\tel = null;\n\t}\n}\n\n/**\n * Returns a function to use in pseudos for input types\n * @param {String} type\n */\nfunction createInputPseudo( type ) {\n\treturn function( elem ) {\n\t\treturn nodeName( elem, \"input\" ) && elem.type === type;\n\t};\n}\n\n/**\n * Returns a function to use in pseudos for buttons\n * @param {String} type\n */\nfunction createButtonPseudo( type ) {\n\treturn function( elem ) {\n\t\treturn ( nodeName( elem, \"input\" ) || nodeName( elem, \"button\" ) ) &&\n\t\t\telem.type === type;\n\t};\n}\n\n/**\n * Returns a function to use in pseudos for :enabled/:disabled\n * @param {Boolean} disabled true for :disabled; false for :enabled\n */\nfunction createDisabledPseudo( disabled ) {\n\n\t// Known :disabled false positives: fieldset[disabled] > legend:nth-of-type(n+2) :can-disable\n\treturn function( elem ) {\n\n\t\t// Only certain elements can match :enabled or :disabled\n\t\t// https://html.spec.whatwg.org/multipage/scripting.html#selector-enabled\n\t\t// https://html.spec.whatwg.org/multipage/scripting.html#selector-disabled\n\t\tif ( \"form\" in elem ) {\n\n\t\t\t// Check for inherited disabledness on relevant non-disabled elements:\n\t\t\t// * listed form-associated elements in a disabled fieldset\n\t\t\t// https://html.spec.whatwg.org/multipage/forms.html#category-listed\n\t\t\t// https://html.spec.whatwg.org/multipage/forms.html#concept-fe-disabled\n\t\t\t// * option elements in a disabled optgroup\n\t\t\t// https://html.spec.whatwg.org/multipage/forms.html#concept-option-disabled\n\t\t\t// All such elements have a \"form\" property.\n\t\t\tif ( elem.parentNode && elem.disabled === false ) {\n\n\t\t\t\t// Option elements defer to a parent optgroup if present\n\t\t\t\tif ( \"label\" in elem ) {\n\t\t\t\t\tif ( \"label\" in elem.parentNode ) {\n\t\t\t\t\t\treturn elem.parentNode.disabled === disabled;\n\t\t\t\t\t} else {\n\t\t\t\t\t\treturn elem.disabled === disabled;\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// Support: IE 6 - 11+\n\t\t\t\t// Use the isDisabled shortcut property to check for disabled fieldset ancestors\n\t\t\t\treturn elem.isDisabled === disabled ||\n\n\t\t\t\t\t// Where there is no isDisabled, check manually\n\t\t\t\t\telem.isDisabled !== !disabled &&\n\t\t\t\t\t\tinDisabledFieldset( elem ) === disabled;\n\t\t\t}\n\n\t\t\treturn elem.disabled === disabled;\n\n\t\t// Try to winnow out elements that can't be disabled before trusting the disabled property.\n\t\t// Some victims get caught in our net (label, legend, menu, track), but it shouldn't\n\t\t// even exist on them, let alone have a boolean value.\n\t\t} else if ( \"label\" in elem ) {\n\t\t\treturn elem.disabled === disabled;\n\t\t}\n\n\t\t// Remaining elements are neither :enabled nor :disabled\n\t\treturn false;\n\t};\n}\n\n/**\n * Returns a function to use in pseudos for positionals\n * @param {Function} fn\n */\nfunction createPositionalPseudo( fn ) {\n\treturn markFunction( function( argument ) {\n\t\targument = +argument;\n\t\treturn markFunction( function( seed, matches ) {\n\t\t\tvar j,\n\t\t\t\tmatchIndexes = fn( [], seed.length, argument ),\n\t\t\t\ti = matchIndexes.length;\n\n\t\t\t// Match elements found at the specified indexes\n\t\t\twhile ( i-- ) {\n\t\t\t\tif ( seed[ ( j = matchIndexes[ i ] ) ] ) {\n\t\t\t\t\tseed[ j ] = !( matches[ j ] = seed[ j ] );\n\t\t\t\t}\n\t\t\t}\n\t\t} );\n\t} );\n}\n\n/**\n * Checks a node for validity as a jQuery selector context\n * @param {Element|Object=} context\n * @returns {Element|Object|Boolean} The input node if acceptable, otherwise a falsy value\n */\nfunction testContext( context ) {\n\treturn context && typeof context.getElementsByTagName !== \"undefined\" && context;\n}\n\n/**\n * Sets document-related variables once based on the current document\n * @param {Element|Object} [node] An element or document object to use to set the document\n * @returns {Object} Returns the current document\n */\nfunction setDocument( node ) {\n\tvar subWindow,\n\t\tdoc = node ? node.ownerDocument || node : preferredDoc;\n\n\t// Return early if doc is invalid or already selected\n\t// Support: IE 11+, Edge 17 - 18+\n\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t// two documents; shallow comparisons work.\n\t// eslint-disable-next-line eqeqeq\n\tif ( doc == document || doc.nodeType !== 9 || !doc.documentElement ) {\n\t\treturn document;\n\t}\n\n\t// Update global variables\n\tdocument = doc;\n\tdocumentElement = document.documentElement;\n\tdocumentIsHTML = !jQuery.isXMLDoc( document );\n\n\t// Support: iOS 7 only, IE 9 - 11+\n\t// Older browsers didn't support unprefixed `matches`.\n\tmatches = documentElement.matches ||\n\t\tdocumentElement.webkitMatchesSelector ||\n\t\tdocumentElement.msMatchesSelector;\n\n\t// Support: IE 9 - 11+, Edge 12 - 18+\n\t// Accessing iframe documents after unload throws \"permission denied\" errors\n\t// (see trac-13936).\n\t// Limit the fix to IE & Edge Legacy; despite Edge 15+ implementing `matches`,\n\t// all IE 9+ and Edge Legacy versions implement `msMatchesSelector` as well.\n\tif ( documentElement.msMatchesSelector &&\n\n\t\t// Support: IE 11+, Edge 17 - 18+\n\t\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t\t// two documents; shallow comparisons work.\n\t\t// eslint-disable-next-line eqeqeq\n\t\tpreferredDoc != document &&\n\t\t( subWindow = document.defaultView ) && subWindow.top !== subWindow ) {\n\n\t\t// Support: IE 9 - 11+, Edge 12 - 18+\n\t\tsubWindow.addEventListener( \"unload\", unloadHandler );\n\t}\n\n\t// Support: IE <10\n\t// Check if getElementById returns elements by name\n\t// The broken getElementById methods don't pick up programmatically-set names,\n\t// so use a roundabout getElementsByName test\n\tsupport.getById = assert( function( el ) {\n\t\tdocumentElement.appendChild( el ).id = jQuery.expando;\n\t\treturn !document.getElementsByName ||\n\t\t\t!document.getElementsByName( jQuery.expando ).length;\n\t} );\n\n\t// Support: IE 9 only\n\t// Check to see if it's possible to do matchesSelector\n\t// on a disconnected node.\n\tsupport.disconnectedMatch = assert( function( el ) {\n\t\treturn matches.call( el, \"*\" );\n\t} );\n\n\t// Support: IE 9 - 11+, Edge 12 - 18+\n\t// IE/Edge don't support the :scope pseudo-class.\n\tsupport.scope = assert( function() {\n\t\treturn document.querySelectorAll( \":scope\" );\n\t} );\n\n\t// Support: Chrome 105 - 111 only, Safari 15.4 - 16.3 only\n\t// Make sure the `:has()` argument is parsed unforgivingly.\n\t// We include `*` in the test to detect buggy implementations that are\n\t// _selectively_ forgiving (specifically when the list includes at least\n\t// one valid selector).\n\t// Note that we treat complete lack of support for `:has()` as if it were\n\t// spec-compliant support, which is fine because use of `:has()` in such\n\t// environments will fail in the qSA path and fall back to jQuery traversal\n\t// anyway.\n\tsupport.cssHas = assert( function() {\n\t\ttry {\n\t\t\tdocument.querySelector( \":has(*,:jqfake)\" );\n\t\t\treturn false;\n\t\t} catch ( e ) {\n\t\t\treturn true;\n\t\t}\n\t} );\n\n\t// ID filter and find\n\tif ( support.getById ) {\n\t\tExpr.filter.ID = function( id ) {\n\t\t\tvar attrId = id.replace( runescape, funescape );\n\t\t\treturn function( elem ) {\n\t\t\t\treturn elem.getAttribute( \"id\" ) === attrId;\n\t\t\t};\n\t\t};\n\t\tExpr.find.ID = function( id, context ) {\n\t\t\tif ( typeof context.getElementById !== \"undefined\" && documentIsHTML ) {\n\t\t\t\tvar elem = context.getElementById( id );\n\t\t\t\treturn elem ? [ elem ] : [];\n\t\t\t}\n\t\t};\n\t} else {\n\t\tExpr.filter.ID = function( id ) {\n\t\t\tvar attrId = id.replace( runescape, funescape );\n\t\t\treturn function( elem ) {\n\t\t\t\tvar node = typeof elem.getAttributeNode !== \"undefined\" &&\n\t\t\t\t\telem.getAttributeNode( \"id\" );\n\t\t\t\treturn node && node.value === attrId;\n\t\t\t};\n\t\t};\n\n\t\t// Support: IE 6 - 7 only\n\t\t// getElementById is not reliable as a find shortcut\n\t\tExpr.find.ID = function( id, context ) {\n\t\t\tif ( typeof context.getElementById !== \"undefined\" && documentIsHTML ) {\n\t\t\t\tvar node, i, elems,\n\t\t\t\t\telem = context.getElementById( id );\n\n\t\t\t\tif ( elem ) {\n\n\t\t\t\t\t// Verify the id attribute\n\t\t\t\t\tnode = elem.getAttributeNode( \"id\" );\n\t\t\t\t\tif ( node && node.value === id ) {\n\t\t\t\t\t\treturn [ elem ];\n\t\t\t\t\t}\n\n\t\t\t\t\t// Fall back on getElementsByName\n\t\t\t\t\telems = context.getElementsByName( id );\n\t\t\t\t\ti = 0;\n\t\t\t\t\twhile ( ( elem = elems[ i++ ] ) ) {\n\t\t\t\t\t\tnode = elem.getAttributeNode( \"id\" );\n\t\t\t\t\t\tif ( node && node.value === id ) {\n\t\t\t\t\t\t\treturn [ elem ];\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\treturn [];\n\t\t\t}\n\t\t};\n\t}\n\n\t// Tag\n\tExpr.find.TAG = function( tag, context ) {\n\t\tif ( typeof context.getElementsByTagName !== \"undefined\" ) {\n\t\t\treturn context.getElementsByTagName( tag );\n\n\t\t// DocumentFragment nodes don't have gEBTN\n\t\t} else {\n\t\t\treturn context.querySelectorAll( tag );\n\t\t}\n\t};\n\n\t// Class\n\tExpr.find.CLASS = function( className, context ) {\n\t\tif ( typeof context.getElementsByClassName !== \"undefined\" && documentIsHTML ) {\n\t\t\treturn context.getElementsByClassName( className );\n\t\t}\n\t};\n\n\t/* QSA/matchesSelector\n\t---------------------------------------------------------------------- */\n\n\t// QSA and matchesSelector support\n\n\trbuggyQSA = [];\n\n\t// Build QSA regex\n\t// Regex strategy adopted from Diego Perini\n\tassert( function( el ) {\n\n\t\tvar input;\n\n\t\tdocumentElement.appendChild( el ).innerHTML =\n\t\t\t\"\" +\n\t\t\t\"\";\n\n\t\t// Support: iOS <=7 - 8 only\n\t\t// Boolean attributes and \"value\" are not treated correctly in some XML documents\n\t\tif ( !el.querySelectorAll( \"[selected]\" ).length ) {\n\t\t\trbuggyQSA.push( \"\\\\[\" + whitespace + \"*(?:value|\" + booleans + \")\" );\n\t\t}\n\n\t\t// Support: iOS <=7 - 8 only\n\t\tif ( !el.querySelectorAll( \"[id~=\" + expando + \"-]\" ).length ) {\n\t\t\trbuggyQSA.push( \"~=\" );\n\t\t}\n\n\t\t// Support: iOS 8 only\n\t\t// https://bugs.webkit.org/show_bug.cgi?id=136851\n\t\t// In-page `selector#id sibling-combinator selector` fails\n\t\tif ( !el.querySelectorAll( \"a#\" + expando + \"+*\" ).length ) {\n\t\t\trbuggyQSA.push( \".#.+[+~]\" );\n\t\t}\n\n\t\t// Support: Chrome <=105+, Firefox <=104+, Safari <=15.4+\n\t\t// In some of the document kinds, these selectors wouldn't work natively.\n\t\t// This is probably OK but for backwards compatibility we want to maintain\n\t\t// handling them through jQuery traversal in jQuery 3.x.\n\t\tif ( !el.querySelectorAll( \":checked\" ).length ) {\n\t\t\trbuggyQSA.push( \":checked\" );\n\t\t}\n\n\t\t// Support: Windows 8 Native Apps\n\t\t// The type and name attributes are restricted during .innerHTML assignment\n\t\tinput = document.createElement( \"input\" );\n\t\tinput.setAttribute( \"type\", \"hidden\" );\n\t\tel.appendChild( input ).setAttribute( \"name\", \"D\" );\n\n\t\t// Support: IE 9 - 11+\n\t\t// IE's :disabled selector does not pick up the children of disabled fieldsets\n\t\t// Support: Chrome <=105+, Firefox <=104+, Safari <=15.4+\n\t\t// In some of the document kinds, these selectors wouldn't work natively.\n\t\t// This is probably OK but for backwards compatibility we want to maintain\n\t\t// handling them through jQuery traversal in jQuery 3.x.\n\t\tdocumentElement.appendChild( el ).disabled = true;\n\t\tif ( el.querySelectorAll( \":disabled\" ).length !== 2 ) {\n\t\t\trbuggyQSA.push( \":enabled\", \":disabled\" );\n\t\t}\n\n\t\t// Support: IE 11+, Edge 15 - 18+\n\t\t// IE 11/Edge don't find elements on a `[name='']` query in some cases.\n\t\t// Adding a temporary attribute to the document before the selection works\n\t\t// around the issue.\n\t\t// Interestingly, IE 10 & older don't seem to have the issue.\n\t\tinput = document.createElement( \"input\" );\n\t\tinput.setAttribute( \"name\", \"\" );\n\t\tel.appendChild( input );\n\t\tif ( !el.querySelectorAll( \"[name='']\" ).length ) {\n\t\t\trbuggyQSA.push( \"\\\\[\" + whitespace + \"*name\" + whitespace + \"*=\" +\n\t\t\t\twhitespace + \"*(?:''|\\\"\\\")\" );\n\t\t}\n\t} );\n\n\tif ( !support.cssHas ) {\n\n\t\t// Support: Chrome 105 - 110+, Safari 15.4 - 16.3+\n\t\t// Our regular `try-catch` mechanism fails to detect natively-unsupported\n\t\t// pseudo-classes inside `:has()` (such as `:has(:contains(\"Foo\"))`)\n\t\t// in browsers that parse the `:has()` argument as a forgiving selector list.\n\t\t// https://drafts.csswg.org/selectors/#relational now requires the argument\n\t\t// to be parsed unforgivingly, but browsers have not yet fully adjusted.\n\t\trbuggyQSA.push( \":has\" );\n\t}\n\n\trbuggyQSA = rbuggyQSA.length && new RegExp( rbuggyQSA.join( \"|\" ) );\n\n\t/* Sorting\n\t---------------------------------------------------------------------- */\n\n\t// Document order sorting\n\tsortOrder = function( a, b ) {\n\n\t\t// Flag for duplicate removal\n\t\tif ( a === b ) {\n\t\t\thasDuplicate = true;\n\t\t\treturn 0;\n\t\t}\n\n\t\t// Sort on method existence if only one input has compareDocumentPosition\n\t\tvar compare = !a.compareDocumentPosition - !b.compareDocumentPosition;\n\t\tif ( compare ) {\n\t\t\treturn compare;\n\t\t}\n\n\t\t// Calculate position if both inputs belong to the same document\n\t\t// Support: IE 11+, Edge 17 - 18+\n\t\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t\t// two documents; shallow comparisons work.\n\t\t// eslint-disable-next-line eqeqeq\n\t\tcompare = ( a.ownerDocument || a ) == ( b.ownerDocument || b ) ?\n\t\t\ta.compareDocumentPosition( b ) :\n\n\t\t\t// Otherwise we know they are disconnected\n\t\t\t1;\n\n\t\t// Disconnected nodes\n\t\tif ( compare & 1 ||\n\t\t\t( !support.sortDetached && b.compareDocumentPosition( a ) === compare ) ) {\n\n\t\t\t// Choose the first element that is related to our preferred document\n\t\t\t// Support: IE 11+, Edge 17 - 18+\n\t\t\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t\t\t// two documents; shallow comparisons work.\n\t\t\t// eslint-disable-next-line eqeqeq\n\t\t\tif ( a === document || a.ownerDocument == preferredDoc &&\n\t\t\t\tfind.contains( preferredDoc, a ) ) {\n\t\t\t\treturn -1;\n\t\t\t}\n\n\t\t\t// Support: IE 11+, Edge 17 - 18+\n\t\t\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t\t\t// two documents; shallow comparisons work.\n\t\t\t// eslint-disable-next-line eqeqeq\n\t\t\tif ( b === document || b.ownerDocument == preferredDoc &&\n\t\t\t\tfind.contains( preferredDoc, b ) ) {\n\t\t\t\treturn 1;\n\t\t\t}\n\n\t\t\t// Maintain original order\n\t\t\treturn sortInput ?\n\t\t\t\t( indexOf.call( sortInput, a ) - indexOf.call( sortInput, b ) ) :\n\t\t\t\t0;\n\t\t}\n\n\t\treturn compare & 4 ? -1 : 1;\n\t};\n\n\treturn document;\n}\n\nfind.matches = function( expr, elements ) {\n\treturn find( expr, null, null, elements );\n};\n\nfind.matchesSelector = function( elem, expr ) {\n\tsetDocument( elem );\n\n\tif ( documentIsHTML &&\n\t\t!nonnativeSelectorCache[ expr + \" \" ] &&\n\t\t( !rbuggyQSA || !rbuggyQSA.test( expr ) ) ) {\n\n\t\ttry {\n\t\t\tvar ret = matches.call( elem, expr );\n\n\t\t\t// IE 9's matchesSelector returns false on disconnected nodes\n\t\t\tif ( ret || support.disconnectedMatch ||\n\n\t\t\t\t\t// As well, disconnected nodes are said to be in a document\n\t\t\t\t\t// fragment in IE 9\n\t\t\t\t\telem.document && elem.document.nodeType !== 11 ) {\n\t\t\t\treturn ret;\n\t\t\t}\n\t\t} catch ( e ) {\n\t\t\tnonnativeSelectorCache( expr, true );\n\t\t}\n\t}\n\n\treturn find( expr, document, null, [ elem ] ).length > 0;\n};\n\nfind.contains = function( context, elem ) {\n\n\t// Set document vars if needed\n\t// Support: IE 11+, Edge 17 - 18+\n\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t// two documents; shallow comparisons work.\n\t// eslint-disable-next-line eqeqeq\n\tif ( ( context.ownerDocument || context ) != document ) {\n\t\tsetDocument( context );\n\t}\n\treturn jQuery.contains( context, elem );\n};\n\n\nfind.attr = function( elem, name ) {\n\n\t// Set document vars if needed\n\t// Support: IE 11+, Edge 17 - 18+\n\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t// two documents; shallow comparisons work.\n\t// eslint-disable-next-line eqeqeq\n\tif ( ( elem.ownerDocument || elem ) != document ) {\n\t\tsetDocument( elem );\n\t}\n\n\tvar fn = Expr.attrHandle[ name.toLowerCase() ],\n\n\t\t// Don't get fooled by Object.prototype properties (see trac-13807)\n\t\tval = fn && hasOwn.call( Expr.attrHandle, name.toLowerCase() ) ?\n\t\t\tfn( elem, name, !documentIsHTML ) :\n\t\t\tundefined;\n\n\tif ( val !== undefined ) {\n\t\treturn val;\n\t}\n\n\treturn elem.getAttribute( name );\n};\n\nfind.error = function( msg ) {\n\tthrow new Error( \"Syntax error, unrecognized expression: \" + msg );\n};\n\n/**\n * Document sorting and removing duplicates\n * @param {ArrayLike} results\n */\njQuery.uniqueSort = function( results ) {\n\tvar elem,\n\t\tduplicates = [],\n\t\tj = 0,\n\t\ti = 0;\n\n\t// Unless we *know* we can detect duplicates, assume their presence\n\t//\n\t// Support: Android <=4.0+\n\t// Testing for detecting duplicates is unpredictable so instead assume we can't\n\t// depend on duplicate detection in all browsers without a stable sort.\n\thasDuplicate = !support.sortStable;\n\tsortInput = !support.sortStable && slice.call( results, 0 );\n\tsort.call( results, sortOrder );\n\n\tif ( hasDuplicate ) {\n\t\twhile ( ( elem = results[ i++ ] ) ) {\n\t\t\tif ( elem === results[ i ] ) {\n\t\t\t\tj = duplicates.push( i );\n\t\t\t}\n\t\t}\n\t\twhile ( j-- ) {\n\t\t\tsplice.call( results, duplicates[ j ], 1 );\n\t\t}\n\t}\n\n\t// Clear input after sorting to release objects\n\t// See https://github.com/jquery/sizzle/pull/225\n\tsortInput = null;\n\n\treturn results;\n};\n\njQuery.fn.uniqueSort = function() {\n\treturn this.pushStack( jQuery.uniqueSort( slice.apply( this ) ) );\n};\n\nExpr = jQuery.expr = {\n\n\t// Can be adjusted by the user\n\tcacheLength: 50,\n\n\tcreatePseudo: markFunction,\n\n\tmatch: matchExpr,\n\n\tattrHandle: {},\n\n\tfind: {},\n\n\trelative: {\n\t\t\">\": { dir: \"parentNode\", first: true },\n\t\t\" \": { dir: \"parentNode\" },\n\t\t\"+\": { dir: \"previousSibling\", first: true },\n\t\t\"~\": { dir: \"previousSibling\" }\n\t},\n\n\tpreFilter: {\n\t\tATTR: function( match ) {\n\t\t\tmatch[ 1 ] = match[ 1 ].replace( runescape, funescape );\n\n\t\t\t// Move the given value to match[3] whether quoted or unquoted\n\t\t\tmatch[ 3 ] = ( match[ 3 ] || match[ 4 ] || match[ 5 ] || \"\" )\n\t\t\t\t.replace( runescape, funescape );\n\n\t\t\tif ( match[ 2 ] === \"~=\" ) {\n\t\t\t\tmatch[ 3 ] = \" \" + match[ 3 ] + \" \";\n\t\t\t}\n\n\t\t\treturn match.slice( 0, 4 );\n\t\t},\n\n\t\tCHILD: function( match ) {\n\n\t\t\t/* matches from matchExpr[\"CHILD\"]\n\t\t\t\t1 type (only|nth|...)\n\t\t\t\t2 what (child|of-type)\n\t\t\t\t3 argument (even|odd|\\d*|\\d*n([+-]\\d+)?|...)\n\t\t\t\t4 xn-component of xn+y argument ([+-]?\\d*n|)\n\t\t\t\t5 sign of xn-component\n\t\t\t\t6 x of xn-component\n\t\t\t\t7 sign of y-component\n\t\t\t\t8 y of y-component\n\t\t\t*/\n\t\t\tmatch[ 1 ] = match[ 1 ].toLowerCase();\n\n\t\t\tif ( match[ 1 ].slice( 0, 3 ) === \"nth\" ) {\n\n\t\t\t\t// nth-* requires argument\n\t\t\t\tif ( !match[ 3 ] ) {\n\t\t\t\t\tfind.error( match[ 0 ] );\n\t\t\t\t}\n\n\t\t\t\t// numeric x and y parameters for Expr.filter.CHILD\n\t\t\t\t// remember that false/true cast respectively to 0/1\n\t\t\t\tmatch[ 4 ] = +( match[ 4 ] ?\n\t\t\t\t\tmatch[ 5 ] + ( match[ 6 ] || 1 ) :\n\t\t\t\t\t2 * ( match[ 3 ] === \"even\" || match[ 3 ] === \"odd\" )\n\t\t\t\t);\n\t\t\t\tmatch[ 5 ] = +( ( match[ 7 ] + match[ 8 ] ) || match[ 3 ] === \"odd\" );\n\n\t\t\t// other types prohibit arguments\n\t\t\t} else if ( match[ 3 ] ) {\n\t\t\t\tfind.error( match[ 0 ] );\n\t\t\t}\n\n\t\t\treturn match;\n\t\t},\n\n\t\tPSEUDO: function( match ) {\n\t\t\tvar excess,\n\t\t\t\tunquoted = !match[ 6 ] && match[ 2 ];\n\n\t\t\tif ( matchExpr.CHILD.test( match[ 0 ] ) ) {\n\t\t\t\treturn null;\n\t\t\t}\n\n\t\t\t// Accept quoted arguments as-is\n\t\t\tif ( match[ 3 ] ) {\n\t\t\t\tmatch[ 2 ] = match[ 4 ] || match[ 5 ] || \"\";\n\n\t\t\t// Strip excess characters from unquoted arguments\n\t\t\t} else if ( unquoted && rpseudo.test( unquoted ) &&\n\n\t\t\t\t// Get excess from tokenize (recursively)\n\t\t\t\t( excess = tokenize( unquoted, true ) ) &&\n\n\t\t\t\t// advance to the next closing parenthesis\n\t\t\t\t( excess = unquoted.indexOf( \")\", unquoted.length - excess ) - unquoted.length ) ) {\n\n\t\t\t\t// excess is a negative index\n\t\t\t\tmatch[ 0 ] = match[ 0 ].slice( 0, excess );\n\t\t\t\tmatch[ 2 ] = unquoted.slice( 0, excess );\n\t\t\t}\n\n\t\t\t// Return only captures needed by the pseudo filter method (type and argument)\n\t\t\treturn match.slice( 0, 3 );\n\t\t}\n\t},\n\n\tfilter: {\n\n\t\tTAG: function( nodeNameSelector ) {\n\t\t\tvar expectedNodeName = nodeNameSelector.replace( runescape, funescape ).toLowerCase();\n\t\t\treturn nodeNameSelector === \"*\" ?\n\t\t\t\tfunction() {\n\t\t\t\t\treturn true;\n\t\t\t\t} :\n\t\t\t\tfunction( elem ) {\n\t\t\t\t\treturn nodeName( elem, expectedNodeName );\n\t\t\t\t};\n\t\t},\n\n\t\tCLASS: function( className ) {\n\t\t\tvar pattern = classCache[ className + \" \" ];\n\n\t\t\treturn pattern ||\n\t\t\t\t( pattern = new RegExp( \"(^|\" + whitespace + \")\" + className +\n\t\t\t\t\t\"(\" + whitespace + \"|$)\" ) ) &&\n\t\t\t\tclassCache( className, function( elem ) {\n\t\t\t\t\treturn pattern.test(\n\t\t\t\t\t\ttypeof elem.className === \"string\" && elem.className ||\n\t\t\t\t\t\t\ttypeof elem.getAttribute !== \"undefined\" &&\n\t\t\t\t\t\t\t\telem.getAttribute( \"class\" ) ||\n\t\t\t\t\t\t\t\"\"\n\t\t\t\t\t);\n\t\t\t\t} );\n\t\t},\n\n\t\tATTR: function( name, operator, check ) {\n\t\t\treturn function( elem ) {\n\t\t\t\tvar result = find.attr( elem, name );\n\n\t\t\t\tif ( result == null ) {\n\t\t\t\t\treturn operator === \"!=\";\n\t\t\t\t}\n\t\t\t\tif ( !operator ) {\n\t\t\t\t\treturn true;\n\t\t\t\t}\n\n\t\t\t\tresult += \"\";\n\n\t\t\t\tif ( operator === \"=\" ) {\n\t\t\t\t\treturn result === check;\n\t\t\t\t}\n\t\t\t\tif ( operator === \"!=\" ) {\n\t\t\t\t\treturn result !== check;\n\t\t\t\t}\n\t\t\t\tif ( operator === \"^=\" ) {\n\t\t\t\t\treturn check && result.indexOf( check ) === 0;\n\t\t\t\t}\n\t\t\t\tif ( operator === \"*=\" ) {\n\t\t\t\t\treturn check && result.indexOf( check ) > -1;\n\t\t\t\t}\n\t\t\t\tif ( operator === \"$=\" ) {\n\t\t\t\t\treturn check && result.slice( -check.length ) === check;\n\t\t\t\t}\n\t\t\t\tif ( operator === \"~=\" ) {\n\t\t\t\t\treturn ( \" \" + result.replace( rwhitespace, \" \" ) + \" \" )\n\t\t\t\t\t\t.indexOf( check ) > -1;\n\t\t\t\t}\n\t\t\t\tif ( operator === \"|=\" ) {\n\t\t\t\t\treturn result === check || result.slice( 0, check.length + 1 ) === check + \"-\";\n\t\t\t\t}\n\n\t\t\t\treturn false;\n\t\t\t};\n\t\t},\n\n\t\tCHILD: function( type, what, _argument, first, last ) {\n\t\t\tvar simple = type.slice( 0, 3 ) !== \"nth\",\n\t\t\t\tforward = type.slice( -4 ) !== \"last\",\n\t\t\t\tofType = what === \"of-type\";\n\n\t\t\treturn first === 1 && last === 0 ?\n\n\t\t\t\t// Shortcut for :nth-*(n)\n\t\t\t\tfunction( elem ) {\n\t\t\t\t\treturn !!elem.parentNode;\n\t\t\t\t} :\n\n\t\t\t\tfunction( elem, _context, xml ) {\n\t\t\t\t\tvar cache, outerCache, node, nodeIndex, start,\n\t\t\t\t\t\tdir = simple !== forward ? \"nextSibling\" : \"previousSibling\",\n\t\t\t\t\t\tparent = elem.parentNode,\n\t\t\t\t\t\tname = ofType && elem.nodeName.toLowerCase(),\n\t\t\t\t\t\tuseCache = !xml && !ofType,\n\t\t\t\t\t\tdiff = false;\n\n\t\t\t\t\tif ( parent ) {\n\n\t\t\t\t\t\t// :(first|last|only)-(child|of-type)\n\t\t\t\t\t\tif ( simple ) {\n\t\t\t\t\t\t\twhile ( dir ) {\n\t\t\t\t\t\t\t\tnode = elem;\n\t\t\t\t\t\t\t\twhile ( ( node = node[ dir ] ) ) {\n\t\t\t\t\t\t\t\t\tif ( ofType ?\n\t\t\t\t\t\t\t\t\t\tnodeName( node, name ) :\n\t\t\t\t\t\t\t\t\t\tnode.nodeType === 1 ) {\n\n\t\t\t\t\t\t\t\t\t\treturn false;\n\t\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t// Reverse direction for :only-* (if we haven't yet done so)\n\t\t\t\t\t\t\t\tstart = dir = type === \"only\" && !start && \"nextSibling\";\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\treturn true;\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tstart = [ forward ? parent.firstChild : parent.lastChild ];\n\n\t\t\t\t\t\t// non-xml :nth-child(...) stores cache data on `parent`\n\t\t\t\t\t\tif ( forward && useCache ) {\n\n\t\t\t\t\t\t\t// Seek `elem` from a previously-cached index\n\t\t\t\t\t\t\touterCache = parent[ expando ] || ( parent[ expando ] = {} );\n\t\t\t\t\t\t\tcache = outerCache[ type ] || [];\n\t\t\t\t\t\t\tnodeIndex = cache[ 0 ] === dirruns && cache[ 1 ];\n\t\t\t\t\t\t\tdiff = nodeIndex && cache[ 2 ];\n\t\t\t\t\t\t\tnode = nodeIndex && parent.childNodes[ nodeIndex ];\n\n\t\t\t\t\t\t\twhile ( ( node = ++nodeIndex && node && node[ dir ] ||\n\n\t\t\t\t\t\t\t\t// Fallback to seeking `elem` from the start\n\t\t\t\t\t\t\t\t( diff = nodeIndex = 0 ) || start.pop() ) ) {\n\n\t\t\t\t\t\t\t\t// When found, cache indexes on `parent` and break\n\t\t\t\t\t\t\t\tif ( node.nodeType === 1 && ++diff && node === elem ) {\n\t\t\t\t\t\t\t\t\touterCache[ type ] = [ dirruns, nodeIndex, diff ];\n\t\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t// Use previously-cached element index if available\n\t\t\t\t\t\t\tif ( useCache ) {\n\t\t\t\t\t\t\t\touterCache = elem[ expando ] || ( elem[ expando ] = {} );\n\t\t\t\t\t\t\t\tcache = outerCache[ type ] || [];\n\t\t\t\t\t\t\t\tnodeIndex = cache[ 0 ] === dirruns && cache[ 1 ];\n\t\t\t\t\t\t\t\tdiff = nodeIndex;\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t// xml :nth-child(...)\n\t\t\t\t\t\t\t// or :nth-last-child(...) or :nth(-last)?-of-type(...)\n\t\t\t\t\t\t\tif ( diff === false ) {\n\n\t\t\t\t\t\t\t\t// Use the same loop as above to seek `elem` from the start\n\t\t\t\t\t\t\t\twhile ( ( node = ++nodeIndex && node && node[ dir ] ||\n\t\t\t\t\t\t\t\t\t( diff = nodeIndex = 0 ) || start.pop() ) ) {\n\n\t\t\t\t\t\t\t\t\tif ( ( ofType ?\n\t\t\t\t\t\t\t\t\t\tnodeName( node, name ) :\n\t\t\t\t\t\t\t\t\t\tnode.nodeType === 1 ) &&\n\t\t\t\t\t\t\t\t\t\t++diff ) {\n\n\t\t\t\t\t\t\t\t\t\t// Cache the index of each encountered element\n\t\t\t\t\t\t\t\t\t\tif ( useCache ) {\n\t\t\t\t\t\t\t\t\t\t\touterCache = node[ expando ] ||\n\t\t\t\t\t\t\t\t\t\t\t\t( node[ expando ] = {} );\n\t\t\t\t\t\t\t\t\t\t\touterCache[ type ] = [ dirruns, diff ];\n\t\t\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t\t\tif ( node === elem ) {\n\t\t\t\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t// Incorporate the offset, then check against cycle size\n\t\t\t\t\t\tdiff -= last;\n\t\t\t\t\t\treturn diff === first || ( diff % first === 0 && diff / first >= 0 );\n\t\t\t\t\t}\n\t\t\t\t};\n\t\t},\n\n\t\tPSEUDO: function( pseudo, argument ) {\n\n\t\t\t// pseudo-class names are case-insensitive\n\t\t\t// https://www.w3.org/TR/selectors/#pseudo-classes\n\t\t\t// Prioritize by case sensitivity in case custom pseudos are added with uppercase letters\n\t\t\t// Remember that setFilters inherits from pseudos\n\t\t\tvar args,\n\t\t\t\tfn = Expr.pseudos[ pseudo ] || Expr.setFilters[ pseudo.toLowerCase() ] ||\n\t\t\t\t\tfind.error( \"unsupported pseudo: \" + pseudo );\n\n\t\t\t// The user may use createPseudo to indicate that\n\t\t\t// arguments are needed to create the filter function\n\t\t\t// just as jQuery does\n\t\t\tif ( fn[ expando ] ) {\n\t\t\t\treturn fn( argument );\n\t\t\t}\n\n\t\t\t// But maintain support for old signatures\n\t\t\tif ( fn.length > 1 ) {\n\t\t\t\targs = [ pseudo, pseudo, \"\", argument ];\n\t\t\t\treturn Expr.setFilters.hasOwnProperty( pseudo.toLowerCase() ) ?\n\t\t\t\t\tmarkFunction( function( seed, matches ) {\n\t\t\t\t\t\tvar idx,\n\t\t\t\t\t\t\tmatched = fn( seed, argument ),\n\t\t\t\t\t\t\ti = matched.length;\n\t\t\t\t\t\twhile ( i-- ) {\n\t\t\t\t\t\t\tidx = indexOf.call( seed, matched[ i ] );\n\t\t\t\t\t\t\tseed[ idx ] = !( matches[ idx ] = matched[ i ] );\n\t\t\t\t\t\t}\n\t\t\t\t\t} ) :\n\t\t\t\t\tfunction( elem ) {\n\t\t\t\t\t\treturn fn( elem, 0, args );\n\t\t\t\t\t};\n\t\t\t}\n\n\t\t\treturn fn;\n\t\t}\n\t},\n\n\tpseudos: {\n\n\t\t// Potentially complex pseudos\n\t\tnot: markFunction( function( selector ) {\n\n\t\t\t// Trim the selector passed to compile\n\t\t\t// to avoid treating leading and trailing\n\t\t\t// spaces as combinators\n\t\t\tvar input = [],\n\t\t\t\tresults = [],\n\t\t\t\tmatcher = compile( selector.replace( rtrimCSS, \"$1\" ) );\n\n\t\t\treturn matcher[ expando ] ?\n\t\t\t\tmarkFunction( function( seed, matches, _context, xml ) {\n\t\t\t\t\tvar elem,\n\t\t\t\t\t\tunmatched = matcher( seed, null, xml, [] ),\n\t\t\t\t\t\ti = seed.length;\n\n\t\t\t\t\t// Match elements unmatched by `matcher`\n\t\t\t\t\twhile ( i-- ) {\n\t\t\t\t\t\tif ( ( elem = unmatched[ i ] ) ) {\n\t\t\t\t\t\t\tseed[ i ] = !( matches[ i ] = elem );\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t} ) :\n\t\t\t\tfunction( elem, _context, xml ) {\n\t\t\t\t\tinput[ 0 ] = elem;\n\t\t\t\t\tmatcher( input, null, xml, results );\n\n\t\t\t\t\t// Don't keep the element\n\t\t\t\t\t// (see https://github.com/jquery/sizzle/issues/299)\n\t\t\t\t\tinput[ 0 ] = null;\n\t\t\t\t\treturn !results.pop();\n\t\t\t\t};\n\t\t} ),\n\n\t\thas: markFunction( function( selector ) {\n\t\t\treturn function( elem ) {\n\t\t\t\treturn find( selector, elem ).length > 0;\n\t\t\t};\n\t\t} ),\n\n\t\tcontains: markFunction( function( text ) {\n\t\t\ttext = text.replace( runescape, funescape );\n\t\t\treturn function( elem ) {\n\t\t\t\treturn ( elem.textContent || jQuery.text( elem ) ).indexOf( text ) > -1;\n\t\t\t};\n\t\t} ),\n\n\t\t// \"Whether an element is represented by a :lang() selector\n\t\t// is based solely on the element's language value\n\t\t// being equal to the identifier C,\n\t\t// or beginning with the identifier C immediately followed by \"-\".\n\t\t// The matching of C against the element's language value is performed case-insensitively.\n\t\t// The identifier C does not have to be a valid language name.\"\n\t\t// https://www.w3.org/TR/selectors/#lang-pseudo\n\t\tlang: markFunction( function( lang ) {\n\n\t\t\t// lang value must be a valid identifier\n\t\t\tif ( !ridentifier.test( lang || \"\" ) ) {\n\t\t\t\tfind.error( \"unsupported lang: \" + lang );\n\t\t\t}\n\t\t\tlang = lang.replace( runescape, funescape ).toLowerCase();\n\t\t\treturn function( elem ) {\n\t\t\t\tvar elemLang;\n\t\t\t\tdo {\n\t\t\t\t\tif ( ( elemLang = documentIsHTML ?\n\t\t\t\t\t\telem.lang :\n\t\t\t\t\t\telem.getAttribute( \"xml:lang\" ) || elem.getAttribute( \"lang\" ) ) ) {\n\n\t\t\t\t\t\telemLang = elemLang.toLowerCase();\n\t\t\t\t\t\treturn elemLang === lang || elemLang.indexOf( lang + \"-\" ) === 0;\n\t\t\t\t\t}\n\t\t\t\t} while ( ( elem = elem.parentNode ) && elem.nodeType === 1 );\n\t\t\t\treturn false;\n\t\t\t};\n\t\t} ),\n\n\t\t// Miscellaneous\n\t\ttarget: function( elem ) {\n\t\t\tvar hash = window.location && window.location.hash;\n\t\t\treturn hash && hash.slice( 1 ) === elem.id;\n\t\t},\n\n\t\troot: function( elem ) {\n\t\t\treturn elem === documentElement;\n\t\t},\n\n\t\tfocus: function( elem ) {\n\t\t\treturn elem === safeActiveElement() &&\n\t\t\t\tdocument.hasFocus() &&\n\t\t\t\t!!( elem.type || elem.href || ~elem.tabIndex );\n\t\t},\n\n\t\t// Boolean properties\n\t\tenabled: createDisabledPseudo( false ),\n\t\tdisabled: createDisabledPseudo( true ),\n\n\t\tchecked: function( elem ) {\n\n\t\t\t// In CSS3, :checked should return both checked and selected elements\n\t\t\t// https://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked\n\t\t\treturn ( nodeName( elem, \"input\" ) && !!elem.checked ) ||\n\t\t\t\t( nodeName( elem, \"option\" ) && !!elem.selected );\n\t\t},\n\n\t\tselected: function( elem ) {\n\n\t\t\t// Support: IE <=11+\n\t\t\t// Accessing the selectedIndex property\n\t\t\t// forces the browser to treat the default option as\n\t\t\t// selected when in an optgroup.\n\t\t\tif ( elem.parentNode ) {\n\t\t\t\t// eslint-disable-next-line no-unused-expressions\n\t\t\t\telem.parentNode.selectedIndex;\n\t\t\t}\n\n\t\t\treturn elem.selected === true;\n\t\t},\n\n\t\t// Contents\n\t\tempty: function( elem ) {\n\n\t\t\t// https://www.w3.org/TR/selectors/#empty-pseudo\n\t\t\t// :empty is negated by element (1) or content nodes (text: 3; cdata: 4; entity ref: 5),\n\t\t\t// but not by others (comment: 8; processing instruction: 7; etc.)\n\t\t\t// nodeType < 6 works because attributes (2) do not appear as children\n\t\t\tfor ( elem = elem.firstChild; elem; elem = elem.nextSibling ) {\n\t\t\t\tif ( elem.nodeType < 6 ) {\n\t\t\t\t\treturn false;\n\t\t\t\t}\n\t\t\t}\n\t\t\treturn true;\n\t\t},\n\n\t\tparent: function( elem ) {\n\t\t\treturn !Expr.pseudos.empty( elem );\n\t\t},\n\n\t\t// Element/input types\n\t\theader: function( elem ) {\n\t\t\treturn rheader.test( elem.nodeName );\n\t\t},\n\n\t\tinput: function( elem ) {\n\t\t\treturn rinputs.test( elem.nodeName );\n\t\t},\n\n\t\tbutton: function( elem ) {\n\t\t\treturn nodeName( elem, \"input\" ) && elem.type === \"button\" ||\n\t\t\t\tnodeName( elem, \"button\" );\n\t\t},\n\n\t\ttext: function( elem ) {\n\t\t\tvar attr;\n\t\t\treturn nodeName( elem, \"input\" ) && elem.type === \"text\" &&\n\n\t\t\t\t// Support: IE <10 only\n\t\t\t\t// New HTML5 attribute values (e.g., \"search\") appear\n\t\t\t\t// with elem.type === \"text\"\n\t\t\t\t( ( attr = elem.getAttribute( \"type\" ) ) == null ||\n\t\t\t\t\tattr.toLowerCase() === \"text\" );\n\t\t},\n\n\t\t// Position-in-collection\n\t\tfirst: createPositionalPseudo( function() {\n\t\t\treturn [ 0 ];\n\t\t} ),\n\n\t\tlast: createPositionalPseudo( function( _matchIndexes, length ) {\n\t\t\treturn [ length - 1 ];\n\t\t} ),\n\n\t\teq: createPositionalPseudo( function( _matchIndexes, length, argument ) {\n\t\t\treturn [ argument < 0 ? argument + length : argument ];\n\t\t} ),\n\n\t\teven: createPositionalPseudo( function( matchIndexes, length ) {\n\t\t\tvar i = 0;\n\t\t\tfor ( ; i < length; i += 2 ) {\n\t\t\t\tmatchIndexes.push( i );\n\t\t\t}\n\t\t\treturn matchIndexes;\n\t\t} ),\n\n\t\todd: createPositionalPseudo( function( matchIndexes, length ) {\n\t\t\tvar i = 1;\n\t\t\tfor ( ; i < length; i += 2 ) {\n\t\t\t\tmatchIndexes.push( i );\n\t\t\t}\n\t\t\treturn matchIndexes;\n\t\t} ),\n\n\t\tlt: createPositionalPseudo( function( matchIndexes, length, argument ) {\n\t\t\tvar i;\n\n\t\t\tif ( argument < 0 ) {\n\t\t\t\ti = argument + length;\n\t\t\t} else if ( argument > length ) {\n\t\t\t\ti = length;\n\t\t\t} else {\n\t\t\t\ti = argument;\n\t\t\t}\n\n\t\t\tfor ( ; --i >= 0; ) {\n\t\t\t\tmatchIndexes.push( i );\n\t\t\t}\n\t\t\treturn matchIndexes;\n\t\t} ),\n\n\t\tgt: createPositionalPseudo( function( matchIndexes, length, argument ) {\n\t\t\tvar i = argument < 0 ? argument + length : argument;\n\t\t\tfor ( ; ++i < length; ) {\n\t\t\t\tmatchIndexes.push( i );\n\t\t\t}\n\t\t\treturn matchIndexes;\n\t\t} )\n\t}\n};\n\nExpr.pseudos.nth = Expr.pseudos.eq;\n\n// Add button/input type pseudos\nfor ( i in { radio: true, checkbox: true, file: true, password: true, image: true } ) {\n\tExpr.pseudos[ i ] = createInputPseudo( i );\n}\nfor ( i in { submit: true, reset: true } ) {\n\tExpr.pseudos[ i ] = createButtonPseudo( i );\n}\n\n// Easy API for creating new setFilters\nfunction setFilters() {}\nsetFilters.prototype = Expr.filters = Expr.pseudos;\nExpr.setFilters = new setFilters();\n\nfunction tokenize( selector, parseOnly ) {\n\tvar matched, match, tokens, type,\n\t\tsoFar, groups, preFilters,\n\t\tcached = tokenCache[ selector + \" \" ];\n\n\tif ( cached ) {\n\t\treturn parseOnly ? 0 : cached.slice( 0 );\n\t}\n\n\tsoFar = selector;\n\tgroups = [];\n\tpreFilters = Expr.preFilter;\n\n\twhile ( soFar ) {\n\n\t\t// Comma and first run\n\t\tif ( !matched || ( match = rcomma.exec( soFar ) ) ) {\n\t\t\tif ( match ) {\n\n\t\t\t\t// Don't consume trailing commas as valid\n\t\t\t\tsoFar = soFar.slice( match[ 0 ].length ) || soFar;\n\t\t\t}\n\t\t\tgroups.push( ( tokens = [] ) );\n\t\t}\n\n\t\tmatched = false;\n\n\t\t// Combinators\n\t\tif ( ( match = rleadingCombinator.exec( soFar ) ) ) {\n\t\t\tmatched = match.shift();\n\t\t\ttokens.push( {\n\t\t\t\tvalue: matched,\n\n\t\t\t\t// Cast descendant combinators to space\n\t\t\t\ttype: match[ 0 ].replace( rtrimCSS, \" \" )\n\t\t\t} );\n\t\t\tsoFar = soFar.slice( matched.length );\n\t\t}\n\n\t\t// Filters\n\t\tfor ( type in Expr.filter ) {\n\t\t\tif ( ( match = matchExpr[ type ].exec( soFar ) ) && ( !preFilters[ type ] ||\n\t\t\t\t( match = preFilters[ type ]( match ) ) ) ) {\n\t\t\t\tmatched = match.shift();\n\t\t\t\ttokens.push( {\n\t\t\t\t\tvalue: matched,\n\t\t\t\t\ttype: type,\n\t\t\t\t\tmatches: match\n\t\t\t\t} );\n\t\t\t\tsoFar = soFar.slice( matched.length );\n\t\t\t}\n\t\t}\n\n\t\tif ( !matched ) {\n\t\t\tbreak;\n\t\t}\n\t}\n\n\t// Return the length of the invalid excess\n\t// if we're just parsing\n\t// Otherwise, throw an error or return tokens\n\tif ( parseOnly ) {\n\t\treturn soFar.length;\n\t}\n\n\treturn soFar ?\n\t\tfind.error( selector ) :\n\n\t\t// Cache the tokens\n\t\ttokenCache( selector, groups ).slice( 0 );\n}\n\nfunction toSelector( tokens ) {\n\tvar i = 0,\n\t\tlen = tokens.length,\n\t\tselector = \"\";\n\tfor ( ; i < len; i++ ) {\n\t\tselector += tokens[ i ].value;\n\t}\n\treturn selector;\n}\n\nfunction addCombinator( matcher, combinator, base ) {\n\tvar dir = combinator.dir,\n\t\tskip = combinator.next,\n\t\tkey = skip || dir,\n\t\tcheckNonElements = base && key === \"parentNode\",\n\t\tdoneName = done++;\n\n\treturn combinator.first ?\n\n\t\t// Check against closest ancestor/preceding element\n\t\tfunction( elem, context, xml ) {\n\t\t\twhile ( ( elem = elem[ dir ] ) ) {\n\t\t\t\tif ( elem.nodeType === 1 || checkNonElements ) {\n\t\t\t\t\treturn matcher( elem, context, xml );\n\t\t\t\t}\n\t\t\t}\n\t\t\treturn false;\n\t\t} :\n\n\t\t// Check against all ancestor/preceding elements\n\t\tfunction( elem, context, xml ) {\n\t\t\tvar oldCache, outerCache,\n\t\t\t\tnewCache = [ dirruns, doneName ];\n\n\t\t\t// We can't set arbitrary data on XML nodes, so they don't benefit from combinator caching\n\t\t\tif ( xml ) {\n\t\t\t\twhile ( ( elem = elem[ dir ] ) ) {\n\t\t\t\t\tif ( elem.nodeType === 1 || checkNonElements ) {\n\t\t\t\t\t\tif ( matcher( elem, context, xml ) ) {\n\t\t\t\t\t\t\treturn true;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\twhile ( ( elem = elem[ dir ] ) ) {\n\t\t\t\t\tif ( elem.nodeType === 1 || checkNonElements ) {\n\t\t\t\t\t\touterCache = elem[ expando ] || ( elem[ expando ] = {} );\n\n\t\t\t\t\t\tif ( skip && nodeName( elem, skip ) ) {\n\t\t\t\t\t\t\telem = elem[ dir ] || elem;\n\t\t\t\t\t\t} else if ( ( oldCache = outerCache[ key ] ) &&\n\t\t\t\t\t\t\toldCache[ 0 ] === dirruns && oldCache[ 1 ] === doneName ) {\n\n\t\t\t\t\t\t\t// Assign to newCache so results back-propagate to previous elements\n\t\t\t\t\t\t\treturn ( newCache[ 2 ] = oldCache[ 2 ] );\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t// Reuse newcache so results back-propagate to previous elements\n\t\t\t\t\t\t\touterCache[ key ] = newCache;\n\n\t\t\t\t\t\t\t// A match means we're done; a fail means we have to keep checking\n\t\t\t\t\t\t\tif ( ( newCache[ 2 ] = matcher( elem, context, xml ) ) ) {\n\t\t\t\t\t\t\t\treturn true;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t\treturn false;\n\t\t};\n}\n\nfunction elementMatcher( matchers ) {\n\treturn matchers.length > 1 ?\n\t\tfunction( elem, context, xml ) {\n\t\t\tvar i = matchers.length;\n\t\t\twhile ( i-- ) {\n\t\t\t\tif ( !matchers[ i ]( elem, context, xml ) ) {\n\t\t\t\t\treturn false;\n\t\t\t\t}\n\t\t\t}\n\t\t\treturn true;\n\t\t} :\n\t\tmatchers[ 0 ];\n}\n\nfunction multipleContexts( selector, contexts, results ) {\n\tvar i = 0,\n\t\tlen = contexts.length;\n\tfor ( ; i < len; i++ ) {\n\t\tfind( selector, contexts[ i ], results );\n\t}\n\treturn results;\n}\n\nfunction condense( unmatched, map, filter, context, xml ) {\n\tvar elem,\n\t\tnewUnmatched = [],\n\t\ti = 0,\n\t\tlen = unmatched.length,\n\t\tmapped = map != null;\n\n\tfor ( ; i < len; i++ ) {\n\t\tif ( ( elem = unmatched[ i ] ) ) {\n\t\t\tif ( !filter || filter( elem, context, xml ) ) {\n\t\t\t\tnewUnmatched.push( elem );\n\t\t\t\tif ( mapped ) {\n\t\t\t\t\tmap.push( i );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\treturn newUnmatched;\n}\n\nfunction setMatcher( preFilter, selector, matcher, postFilter, postFinder, postSelector ) {\n\tif ( postFilter && !postFilter[ expando ] ) {\n\t\tpostFilter = setMatcher( postFilter );\n\t}\n\tif ( postFinder && !postFinder[ expando ] ) {\n\t\tpostFinder = setMatcher( postFinder, postSelector );\n\t}\n\treturn markFunction( function( seed, results, context, xml ) {\n\t\tvar temp, i, elem, matcherOut,\n\t\t\tpreMap = [],\n\t\t\tpostMap = [],\n\t\t\tpreexisting = results.length,\n\n\t\t\t// Get initial elements from seed or context\n\t\t\telems = seed ||\n\t\t\t\tmultipleContexts( selector || \"*\",\n\t\t\t\t\tcontext.nodeType ? [ context ] : context, [] ),\n\n\t\t\t// Prefilter to get matcher input, preserving a map for seed-results synchronization\n\t\t\tmatcherIn = preFilter && ( seed || !selector ) ?\n\t\t\t\tcondense( elems, preMap, preFilter, context, xml ) :\n\t\t\t\telems;\n\n\t\tif ( matcher ) {\n\n\t\t\t// If we have a postFinder, or filtered seed, or non-seed postFilter\n\t\t\t// or preexisting results,\n\t\t\tmatcherOut = postFinder || ( seed ? preFilter : preexisting || postFilter ) ?\n\n\t\t\t\t// ...intermediate processing is necessary\n\t\t\t\t[] :\n\n\t\t\t\t// ...otherwise use results directly\n\t\t\t\tresults;\n\n\t\t\t// Find primary matches\n\t\t\tmatcher( matcherIn, matcherOut, context, xml );\n\t\t} else {\n\t\t\tmatcherOut = matcherIn;\n\t\t}\n\n\t\t// Apply postFilter\n\t\tif ( postFilter ) {\n\t\t\ttemp = condense( matcherOut, postMap );\n\t\t\tpostFilter( temp, [], context, xml );\n\n\t\t\t// Un-match failing elements by moving them back to matcherIn\n\t\t\ti = temp.length;\n\t\t\twhile ( i-- ) {\n\t\t\t\tif ( ( elem = temp[ i ] ) ) {\n\t\t\t\t\tmatcherOut[ postMap[ i ] ] = !( matcherIn[ postMap[ i ] ] = elem );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\tif ( seed ) {\n\t\t\tif ( postFinder || preFilter ) {\n\t\t\t\tif ( postFinder ) {\n\n\t\t\t\t\t// Get the final matcherOut by condensing this intermediate into postFinder contexts\n\t\t\t\t\ttemp = [];\n\t\t\t\t\ti = matcherOut.length;\n\t\t\t\t\twhile ( i-- ) {\n\t\t\t\t\t\tif ( ( elem = matcherOut[ i ] ) ) {\n\n\t\t\t\t\t\t\t// Restore matcherIn since elem is not yet a final match\n\t\t\t\t\t\t\ttemp.push( ( matcherIn[ i ] = elem ) );\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t\tpostFinder( null, ( matcherOut = [] ), temp, xml );\n\t\t\t\t}\n\n\t\t\t\t// Move matched elements from seed to results to keep them synchronized\n\t\t\t\ti = matcherOut.length;\n\t\t\t\twhile ( i-- ) {\n\t\t\t\t\tif ( ( elem = matcherOut[ i ] ) &&\n\t\t\t\t\t\t( temp = postFinder ? indexOf.call( seed, elem ) : preMap[ i ] ) > -1 ) {\n\n\t\t\t\t\t\tseed[ temp ] = !( results[ temp ] = elem );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t// Add elements to results, through postFinder if defined\n\t\t} else {\n\t\t\tmatcherOut = condense(\n\t\t\t\tmatcherOut === results ?\n\t\t\t\t\tmatcherOut.splice( preexisting, matcherOut.length ) :\n\t\t\t\t\tmatcherOut\n\t\t\t);\n\t\t\tif ( postFinder ) {\n\t\t\t\tpostFinder( null, results, matcherOut, xml );\n\t\t\t} else {\n\t\t\t\tpush.apply( results, matcherOut );\n\t\t\t}\n\t\t}\n\t} );\n}\n\nfunction matcherFromTokens( tokens ) {\n\tvar checkContext, matcher, j,\n\t\tlen = tokens.length,\n\t\tleadingRelative = Expr.relative[ tokens[ 0 ].type ],\n\t\timplicitRelative = leadingRelative || Expr.relative[ \" \" ],\n\t\ti = leadingRelative ? 1 : 0,\n\n\t\t// The foundational matcher ensures that elements are reachable from top-level context(s)\n\t\tmatchContext = addCombinator( function( elem ) {\n\t\t\treturn elem === checkContext;\n\t\t}, implicitRelative, true ),\n\t\tmatchAnyContext = addCombinator( function( elem ) {\n\t\t\treturn indexOf.call( checkContext, elem ) > -1;\n\t\t}, implicitRelative, true ),\n\t\tmatchers = [ function( elem, context, xml ) {\n\n\t\t\t// Support: IE 11+, Edge 17 - 18+\n\t\t\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t\t\t// two documents; shallow comparisons work.\n\t\t\t// eslint-disable-next-line eqeqeq\n\t\t\tvar ret = ( !leadingRelative && ( xml || context != outermostContext ) ) || (\n\t\t\t\t( checkContext = context ).nodeType ?\n\t\t\t\t\tmatchContext( elem, context, xml ) :\n\t\t\t\t\tmatchAnyContext( elem, context, xml ) );\n\n\t\t\t// Avoid hanging onto element\n\t\t\t// (see https://github.com/jquery/sizzle/issues/299)\n\t\t\tcheckContext = null;\n\t\t\treturn ret;\n\t\t} ];\n\n\tfor ( ; i < len; i++ ) {\n\t\tif ( ( matcher = Expr.relative[ tokens[ i ].type ] ) ) {\n\t\t\tmatchers = [ addCombinator( elementMatcher( matchers ), matcher ) ];\n\t\t} else {\n\t\t\tmatcher = Expr.filter[ tokens[ i ].type ].apply( null, tokens[ i ].matches );\n\n\t\t\t// Return special upon seeing a positional matcher\n\t\t\tif ( matcher[ expando ] ) {\n\n\t\t\t\t// Find the next relative operator (if any) for proper handling\n\t\t\t\tj = ++i;\n\t\t\t\tfor ( ; j < len; j++ ) {\n\t\t\t\t\tif ( Expr.relative[ tokens[ j ].type ] ) {\n\t\t\t\t\t\tbreak;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\treturn setMatcher(\n\t\t\t\t\ti > 1 && elementMatcher( matchers ),\n\t\t\t\t\ti > 1 && toSelector(\n\n\t\t\t\t\t\t// If the preceding token was a descendant combinator, insert an implicit any-element `*`\n\t\t\t\t\t\ttokens.slice( 0, i - 1 )\n\t\t\t\t\t\t\t.concat( { value: tokens[ i - 2 ].type === \" \" ? \"*\" : \"\" } )\n\t\t\t\t\t).replace( rtrimCSS, \"$1\" ),\n\t\t\t\t\tmatcher,\n\t\t\t\t\ti < j && matcherFromTokens( tokens.slice( i, j ) ),\n\t\t\t\t\tj < len && matcherFromTokens( ( tokens = tokens.slice( j ) ) ),\n\t\t\t\t\tj < len && toSelector( tokens )\n\t\t\t\t);\n\t\t\t}\n\t\t\tmatchers.push( matcher );\n\t\t}\n\t}\n\n\treturn elementMatcher( matchers );\n}\n\nfunction matcherFromGroupMatchers( elementMatchers, setMatchers ) {\n\tvar bySet = setMatchers.length > 0,\n\t\tbyElement = elementMatchers.length > 0,\n\t\tsuperMatcher = function( seed, context, xml, results, outermost ) {\n\t\t\tvar elem, j, matcher,\n\t\t\t\tmatchedCount = 0,\n\t\t\t\ti = \"0\",\n\t\t\t\tunmatched = seed && [],\n\t\t\t\tsetMatched = [],\n\t\t\t\tcontextBackup = outermostContext,\n\n\t\t\t\t// We must always have either seed elements or outermost context\n\t\t\t\telems = seed || byElement && Expr.find.TAG( \"*\", outermost ),\n\n\t\t\t\t// Use integer dirruns iff this is the outermost matcher\n\t\t\t\tdirrunsUnique = ( dirruns += contextBackup == null ? 1 : Math.random() || 0.1 ),\n\t\t\t\tlen = elems.length;\n\n\t\t\tif ( outermost ) {\n\n\t\t\t\t// Support: IE 11+, Edge 17 - 18+\n\t\t\t\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t\t\t\t// two documents; shallow comparisons work.\n\t\t\t\t// eslint-disable-next-line eqeqeq\n\t\t\t\toutermostContext = context == document || context || outermost;\n\t\t\t}\n\n\t\t\t// Add elements passing elementMatchers directly to results\n\t\t\t// Support: iOS <=7 - 9 only\n\t\t\t// Tolerate NodeList properties (IE: \"length\"; Safari: ) matching\n\t\t\t// elements by id. (see trac-14142)\n\t\t\tfor ( ; i !== len && ( elem = elems[ i ] ) != null; i++ ) {\n\t\t\t\tif ( byElement && elem ) {\n\t\t\t\t\tj = 0;\n\n\t\t\t\t\t// Support: IE 11+, Edge 17 - 18+\n\t\t\t\t\t// IE/Edge sometimes throw a \"Permission denied\" error when strict-comparing\n\t\t\t\t\t// two documents; shallow comparisons work.\n\t\t\t\t\t// eslint-disable-next-line eqeqeq\n\t\t\t\t\tif ( !context && elem.ownerDocument != document ) {\n\t\t\t\t\t\tsetDocument( elem );\n\t\t\t\t\t\txml = !documentIsHTML;\n\t\t\t\t\t}\n\t\t\t\t\twhile ( ( matcher = elementMatchers[ j++ ] ) ) {\n\t\t\t\t\t\tif ( matcher( elem, context || document, xml ) ) {\n\t\t\t\t\t\t\tpush.call( results, elem );\n\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t\tif ( outermost ) {\n\t\t\t\t\t\tdirruns = dirrunsUnique;\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// Track unmatched elements for set filters\n\t\t\t\tif ( bySet ) {\n\n\t\t\t\t\t// They will have gone through all possible matchers\n\t\t\t\t\tif ( ( elem = !matcher && elem ) ) {\n\t\t\t\t\t\tmatchedCount--;\n\t\t\t\t\t}\n\n\t\t\t\t\t// Lengthen the array for every element, matched or not\n\t\t\t\t\tif ( seed ) {\n\t\t\t\t\t\tunmatched.push( elem );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// `i` is now the count of elements visited above, and adding it to `matchedCount`\n\t\t\t// makes the latter nonnegative.\n\t\t\tmatchedCount += i;\n\n\t\t\t// Apply set filters to unmatched elements\n\t\t\t// NOTE: This can be skipped if there are no unmatched elements (i.e., `matchedCount`\n\t\t\t// equals `i`), unless we didn't visit _any_ elements in the above loop because we have\n\t\t\t// no element matchers and no seed.\n\t\t\t// Incrementing an initially-string \"0\" `i` allows `i` to remain a string only in that\n\t\t\t// case, which will result in a \"00\" `matchedCount` that differs from `i` but is also\n\t\t\t// numerically zero.\n\t\t\tif ( bySet && i !== matchedCount ) {\n\t\t\t\tj = 0;\n\t\t\t\twhile ( ( matcher = setMatchers[ j++ ] ) ) {\n\t\t\t\t\tmatcher( unmatched, setMatched, context, xml );\n\t\t\t\t}\n\n\t\t\t\tif ( seed ) {\n\n\t\t\t\t\t// Reintegrate element matches to eliminate the need for sorting\n\t\t\t\t\tif ( matchedCount > 0 ) {\n\t\t\t\t\t\twhile ( i-- ) {\n\t\t\t\t\t\t\tif ( !( unmatched[ i ] || setMatched[ i ] ) ) {\n\t\t\t\t\t\t\t\tsetMatched[ i ] = pop.call( results );\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\t// Discard index placeholder values to get only actual matches\n\t\t\t\t\tsetMatched = condense( setMatched );\n\t\t\t\t}\n\n\t\t\t\t// Add matches to results\n\t\t\t\tpush.apply( results, setMatched );\n\n\t\t\t\t// Seedless set matches succeeding multiple successful matchers stipulate sorting\n\t\t\t\tif ( outermost && !seed && setMatched.length > 0 &&\n\t\t\t\t\t( matchedCount + setMatchers.length ) > 1 ) {\n\n\t\t\t\t\tjQuery.uniqueSort( results );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Override manipulation of globals by nested matchers\n\t\t\tif ( outermost ) {\n\t\t\t\tdirruns = dirrunsUnique;\n\t\t\t\toutermostContext = contextBackup;\n\t\t\t}\n\n\t\t\treturn unmatched;\n\t\t};\n\n\treturn bySet ?\n\t\tmarkFunction( superMatcher ) :\n\t\tsuperMatcher;\n}\n\nfunction compile( selector, match /* Internal Use Only */ ) {\n\tvar i,\n\t\tsetMatchers = [],\n\t\telementMatchers = [],\n\t\tcached = compilerCache[ selector + \" \" ];\n\n\tif ( !cached ) {\n\n\t\t// Generate a function of recursive functions that can be used to check each element\n\t\tif ( !match ) {\n\t\t\tmatch = tokenize( selector );\n\t\t}\n\t\ti = match.length;\n\t\twhile ( i-- ) {\n\t\t\tcached = matcherFromTokens( match[ i ] );\n\t\t\tif ( cached[ expando ] ) {\n\t\t\t\tsetMatchers.push( cached );\n\t\t\t} else {\n\t\t\t\telementMatchers.push( cached );\n\t\t\t}\n\t\t}\n\n\t\t// Cache the compiled function\n\t\tcached = compilerCache( selector,\n\t\t\tmatcherFromGroupMatchers( elementMatchers, setMatchers ) );\n\n\t\t// Save selector and tokenization\n\t\tcached.selector = selector;\n\t}\n\treturn cached;\n}\n\n/**\n * A low-level selection function that works with jQuery's compiled\n * selector functions\n * @param {String|Function} selector A selector or a pre-compiled\n * selector function built with jQuery selector compile\n * @param {Element} context\n * @param {Array} [results]\n * @param {Array} [seed] A set of elements to match against\n */\nfunction select( selector, context, results, seed ) {\n\tvar i, tokens, token, type, find,\n\t\tcompiled = typeof selector === \"function\" && selector,\n\t\tmatch = !seed && tokenize( ( selector = compiled.selector || selector ) );\n\n\tresults = results || [];\n\n\t// Try to minimize operations if there is only one selector in the list and no seed\n\t// (the latter of which guarantees us context)\n\tif ( match.length === 1 ) {\n\n\t\t// Reduce context if the leading compound selector is an ID\n\t\ttokens = match[ 0 ] = match[ 0 ].slice( 0 );\n\t\tif ( tokens.length > 2 && ( token = tokens[ 0 ] ).type === \"ID\" &&\n\t\t\t\tcontext.nodeType === 9 && documentIsHTML && Expr.relative[ tokens[ 1 ].type ] ) {\n\n\t\t\tcontext = ( Expr.find.ID(\n\t\t\t\ttoken.matches[ 0 ].replace( runescape, funescape ),\n\t\t\t\tcontext\n\t\t\t) || [] )[ 0 ];\n\t\t\tif ( !context ) {\n\t\t\t\treturn results;\n\n\t\t\t// Precompiled matchers will still verify ancestry, so step up a level\n\t\t\t} else if ( compiled ) {\n\t\t\t\tcontext = context.parentNode;\n\t\t\t}\n\n\t\t\tselector = selector.slice( tokens.shift().value.length );\n\t\t}\n\n\t\t// Fetch a seed set for right-to-left matching\n\t\ti = matchExpr.needsContext.test( selector ) ? 0 : tokens.length;\n\t\twhile ( i-- ) {\n\t\t\ttoken = tokens[ i ];\n\n\t\t\t// Abort if we hit a combinator\n\t\t\tif ( Expr.relative[ ( type = token.type ) ] ) {\n\t\t\t\tbreak;\n\t\t\t}\n\t\t\tif ( ( find = Expr.find[ type ] ) ) {\n\n\t\t\t\t// Search, expanding context for leading sibling combinators\n\t\t\t\tif ( ( seed = find(\n\t\t\t\t\ttoken.matches[ 0 ].replace( runescape, funescape ),\n\t\t\t\t\trsibling.test( tokens[ 0 ].type ) &&\n\t\t\t\t\t\ttestContext( context.parentNode ) || context\n\t\t\t\t) ) ) {\n\n\t\t\t\t\t// If seed is empty or no tokens remain, we can return early\n\t\t\t\t\ttokens.splice( i, 1 );\n\t\t\t\t\tselector = seed.length && toSelector( tokens );\n\t\t\t\t\tif ( !selector ) {\n\t\t\t\t\t\tpush.apply( results, seed );\n\t\t\t\t\t\treturn results;\n\t\t\t\t\t}\n\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\t// Compile and execute a filtering function if one is not provided\n\t// Provide `match` to avoid retokenization if we modified the selector above\n\t( compiled || compile( selector, match ) )(\n\t\tseed,\n\t\tcontext,\n\t\t!documentIsHTML,\n\t\tresults,\n\t\t!context || rsibling.test( selector ) && testContext( context.parentNode ) || context\n\t);\n\treturn results;\n}\n\n// One-time assignments\n\n// Support: Android <=4.0 - 4.1+\n// Sort stability\nsupport.sortStable = expando.split( \"\" ).sort( sortOrder ).join( \"\" ) === expando;\n\n// Initialize against the default document\nsetDocument();\n\n// Support: Android <=4.0 - 4.1+\n// Detached nodes confoundingly follow *each other*\nsupport.sortDetached = assert( function( el ) {\n\n\t// Should return 1, but returns 4 (following)\n\treturn el.compareDocumentPosition( document.createElement( \"fieldset\" ) ) & 1;\n} );\n\njQuery.find = find;\n\n// Deprecated\njQuery.expr[ \":\" ] = jQuery.expr.pseudos;\njQuery.unique = jQuery.uniqueSort;\n\n// These have always been private, but they used to be documented as part of\n// Sizzle so let's maintain them for now for backwards compatibility purposes.\nfind.compile = compile;\nfind.select = select;\nfind.setDocument = setDocument;\nfind.tokenize = tokenize;\n\nfind.escape = jQuery.escapeSelector;\nfind.getText = jQuery.text;\nfind.isXML = jQuery.isXMLDoc;\nfind.selectors = jQuery.expr;\nfind.support = jQuery.support;\nfind.uniqueSort = jQuery.uniqueSort;\n\n\t/* eslint-enable */\n\n} )();\n\n\nvar dir = function( elem, dir, until ) {\n\tvar matched = [],\n\t\ttruncate = until !== undefined;\n\n\twhile ( ( elem = elem[ dir ] ) && elem.nodeType !== 9 ) {\n\t\tif ( elem.nodeType === 1 ) {\n\t\t\tif ( truncate && jQuery( elem ).is( until ) ) {\n\t\t\t\tbreak;\n\t\t\t}\n\t\t\tmatched.push( elem );\n\t\t}\n\t}\n\treturn matched;\n};\n\n\nvar siblings = function( n, elem ) {\n\tvar matched = [];\n\n\tfor ( ; n; n = n.nextSibling ) {\n\t\tif ( n.nodeType === 1 && n !== elem ) {\n\t\t\tmatched.push( n );\n\t\t}\n\t}\n\n\treturn matched;\n};\n\n\nvar rneedsContext = jQuery.expr.match.needsContext;\n\nvar rsingleTag = ( /^<([a-z][^\\/\\0>:\\x20\\t\\r\\n\\f]*)[\\x20\\t\\r\\n\\f]*\\/?>(?:<\\/\\1>|)$/i );\n\n\n\n// Implement the identical functionality for filter and not\nfunction winnow( elements, qualifier, not ) {\n\tif ( isFunction( qualifier ) ) {\n\t\treturn jQuery.grep( elements, function( elem, i ) {\n\t\t\treturn !!qualifier.call( elem, i, elem ) !== not;\n\t\t} );\n\t}\n\n\t// Single element\n\tif ( qualifier.nodeType ) {\n\t\treturn jQuery.grep( elements, function( elem ) {\n\t\t\treturn ( elem === qualifier ) !== not;\n\t\t} );\n\t}\n\n\t// Arraylike of elements (jQuery, arguments, Array)\n\tif ( typeof qualifier !== \"string\" ) {\n\t\treturn jQuery.grep( elements, function( elem ) {\n\t\t\treturn ( indexOf.call( qualifier, elem ) > -1 ) !== not;\n\t\t} );\n\t}\n\n\t// Filtered directly for both simple and complex selectors\n\treturn jQuery.filter( qualifier, elements, not );\n}\n\njQuery.filter = function( expr, elems, not ) {\n\tvar elem = elems[ 0 ];\n\n\tif ( not ) {\n\t\texpr = \":not(\" + expr + \")\";\n\t}\n\n\tif ( elems.length === 1 && elem.nodeType === 1 ) {\n\t\treturn jQuery.find.matchesSelector( elem, expr ) ? [ elem ] : [];\n\t}\n\n\treturn jQuery.find.matches( expr, jQuery.grep( elems, function( elem ) {\n\t\treturn elem.nodeType === 1;\n\t} ) );\n};\n\njQuery.fn.extend( {\n\tfind: function( selector ) {\n\t\tvar i, ret,\n\t\t\tlen = this.length,\n\t\t\tself = this;\n\n\t\tif ( typeof selector !== \"string\" ) {\n\t\t\treturn this.pushStack( jQuery( selector ).filter( function() {\n\t\t\t\tfor ( i = 0; i < len; i++ ) {\n\t\t\t\t\tif ( jQuery.contains( self[ i ], this ) ) {\n\t\t\t\t\t\treturn true;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} ) );\n\t\t}\n\n\t\tret = this.pushStack( [] );\n\n\t\tfor ( i = 0; i < len; i++ ) {\n\t\t\tjQuery.find( selector, self[ i ], ret );\n\t\t}\n\n\t\treturn len > 1 ? jQuery.uniqueSort( ret ) : ret;\n\t},\n\tfilter: function( selector ) {\n\t\treturn this.pushStack( winnow( this, selector || [], false ) );\n\t},\n\tnot: function( selector ) {\n\t\treturn this.pushStack( winnow( this, selector || [], true ) );\n\t},\n\tis: function( selector ) {\n\t\treturn !!winnow(\n\t\t\tthis,\n\n\t\t\t// If this is a positional/relative selector, check membership in the returned set\n\t\t\t// so $(\"p:first\").is(\"p:last\") won't return true for a doc with two \"p\".\n\t\t\ttypeof selector === \"string\" && rneedsContext.test( selector ) ?\n\t\t\t\tjQuery( selector ) :\n\t\t\t\tselector || [],\n\t\t\tfalse\n\t\t).length;\n\t}\n} );\n\n\n// Initialize a jQuery object\n\n\n// A central reference to the root jQuery(document)\nvar rootjQuery,\n\n\t// A simple way to check for HTML strings\n\t// Prioritize #id over to avoid XSS via location.hash (trac-9521)\n\t// Strict HTML recognition (trac-11290: must start with <)\n\t// Shortcut simple #id case for speed\n\trquickExpr = /^(?:\\s*(<[\\w\\W]+>)[^>]*|#([\\w-]+))$/,\n\n\tinit = jQuery.fn.init = function( selector, context, root ) {\n\t\tvar match, elem;\n\n\t\t// HANDLE: $(\"\"), $(null), $(undefined), $(false)\n\t\tif ( !selector ) {\n\t\t\treturn this;\n\t\t}\n\n\t\t// Method init() accepts an alternate rootjQuery\n\t\t// so migrate can support jQuery.sub (gh-2101)\n\t\troot = root || rootjQuery;\n\n\t\t// Handle HTML strings\n\t\tif ( typeof selector === \"string\" ) {\n\t\t\tif ( selector[ 0 ] === \"<\" &&\n\t\t\t\tselector[ selector.length - 1 ] === \">\" &&\n\t\t\t\tselector.length >= 3 ) {\n\n\t\t\t\t// Assume that strings that start and end with <> are HTML and skip the regex check\n\t\t\t\tmatch = [ null, selector, null ];\n\n\t\t\t} else {\n\t\t\t\tmatch = rquickExpr.exec( selector );\n\t\t\t}\n\n\t\t\t// Match html or make sure no context is specified for #id\n\t\t\tif ( match && ( match[ 1 ] || !context ) ) {\n\n\t\t\t\t// HANDLE: $(html) -> $(array)\n\t\t\t\tif ( match[ 1 ] ) {\n\t\t\t\t\tcontext = context instanceof jQuery ? context[ 0 ] : context;\n\n\t\t\t\t\t// Option to run scripts is true for back-compat\n\t\t\t\t\t// Intentionally let the error be thrown if parseHTML is not present\n\t\t\t\t\tjQuery.merge( this, jQuery.parseHTML(\n\t\t\t\t\t\tmatch[ 1 ],\n\t\t\t\t\t\tcontext && context.nodeType ? context.ownerDocument || context : document,\n\t\t\t\t\t\ttrue\n\t\t\t\t\t) );\n\n\t\t\t\t\t// HANDLE: $(html, props)\n\t\t\t\t\tif ( rsingleTag.test( match[ 1 ] ) && jQuery.isPlainObject( context ) ) {\n\t\t\t\t\t\tfor ( match in context ) {\n\n\t\t\t\t\t\t\t// Properties of context are called as methods if possible\n\t\t\t\t\t\t\tif ( isFunction( this[ match ] ) ) {\n\t\t\t\t\t\t\t\tthis[ match ]( context[ match ] );\n\n\t\t\t\t\t\t\t// ...and otherwise set as attributes\n\t\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\t\tthis.attr( match, context[ match ] );\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\treturn this;\n\n\t\t\t\t// HANDLE: $(#id)\n\t\t\t\t} else {\n\t\t\t\t\telem = document.getElementById( match[ 2 ] );\n\n\t\t\t\t\tif ( elem ) {\n\n\t\t\t\t\t\t// Inject the element directly into the jQuery object\n\t\t\t\t\t\tthis[ 0 ] = elem;\n\t\t\t\t\t\tthis.length = 1;\n\t\t\t\t\t}\n\t\t\t\t\treturn this;\n\t\t\t\t}\n\n\t\t\t// HANDLE: $(expr, $(...))\n\t\t\t} else if ( !context || context.jquery ) {\n\t\t\t\treturn ( context || root ).find( selector );\n\n\t\t\t// HANDLE: $(expr, context)\n\t\t\t// (which is just equivalent to: $(context).find(expr)\n\t\t\t} else {\n\t\t\t\treturn this.constructor( context ).find( selector );\n\t\t\t}\n\n\t\t// HANDLE: $(DOMElement)\n\t\t} else if ( selector.nodeType ) {\n\t\t\tthis[ 0 ] = selector;\n\t\t\tthis.length = 1;\n\t\t\treturn this;\n\n\t\t// HANDLE: $(function)\n\t\t// Shortcut for document ready\n\t\t} else if ( isFunction( selector ) ) {\n\t\t\treturn root.ready !== undefined ?\n\t\t\t\troot.ready( selector ) :\n\n\t\t\t\t// Execute immediately if ready is not present\n\t\t\t\tselector( jQuery );\n\t\t}\n\n\t\treturn jQuery.makeArray( selector, this );\n\t};\n\n// Give the init function the jQuery prototype for later instantiation\ninit.prototype = jQuery.fn;\n\n// Initialize central reference\nrootjQuery = jQuery( document );\n\n\nvar rparentsprev = /^(?:parents|prev(?:Until|All))/,\n\n\t// Methods guaranteed to produce a unique set when starting from a unique set\n\tguaranteedUnique = {\n\t\tchildren: true,\n\t\tcontents: true,\n\t\tnext: true,\n\t\tprev: true\n\t};\n\njQuery.fn.extend( {\n\thas: function( target ) {\n\t\tvar targets = jQuery( target, this ),\n\t\t\tl = targets.length;\n\n\t\treturn this.filter( function() {\n\t\t\tvar i = 0;\n\t\t\tfor ( ; i < l; i++ ) {\n\t\t\t\tif ( jQuery.contains( this, targets[ i ] ) ) {\n\t\t\t\t\treturn true;\n\t\t\t\t}\n\t\t\t}\n\t\t} );\n\t},\n\n\tclosest: function( selectors, context ) {\n\t\tvar cur,\n\t\t\ti = 0,\n\t\t\tl = this.length,\n\t\t\tmatched = [],\n\t\t\ttargets = typeof selectors !== \"string\" && jQuery( selectors );\n\n\t\t// Positional selectors never match, since there's no _selection_ context\n\t\tif ( !rneedsContext.test( selectors ) ) {\n\t\t\tfor ( ; i < l; i++ ) {\n\t\t\t\tfor ( cur = this[ i ]; cur && cur !== context; cur = cur.parentNode ) {\n\n\t\t\t\t\t// Always skip document fragments\n\t\t\t\t\tif ( cur.nodeType < 11 && ( targets ?\n\t\t\t\t\t\ttargets.index( cur ) > -1 :\n\n\t\t\t\t\t\t// Don't pass non-elements to jQuery#find\n\t\t\t\t\t\tcur.nodeType === 1 &&\n\t\t\t\t\t\t\tjQuery.find.matchesSelector( cur, selectors ) ) ) {\n\n\t\t\t\t\t\tmatched.push( cur );\n\t\t\t\t\t\tbreak;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn this.pushStack( matched.length > 1 ? jQuery.uniqueSort( matched ) : matched );\n\t},\n\n\t// Determine the position of an element within the set\n\tindex: function( elem ) {\n\n\t\t// No argument, return index in parent\n\t\tif ( !elem ) {\n\t\t\treturn ( this[ 0 ] && this[ 0 ].parentNode ) ? this.first().prevAll().length : -1;\n\t\t}\n\n\t\t// Index in selector\n\t\tif ( typeof elem === \"string\" ) {\n\t\t\treturn indexOf.call( jQuery( elem ), this[ 0 ] );\n\t\t}\n\n\t\t// Locate the position of the desired element\n\t\treturn indexOf.call( this,\n\n\t\t\t// If it receives a jQuery object, the first element is used\n\t\t\telem.jquery ? elem[ 0 ] : elem\n\t\t);\n\t},\n\n\tadd: function( selector, context ) {\n\t\treturn this.pushStack(\n\t\t\tjQuery.uniqueSort(\n\t\t\t\tjQuery.merge( this.get(), jQuery( selector, context ) )\n\t\t\t)\n\t\t);\n\t},\n\n\taddBack: function( selector ) {\n\t\treturn this.add( selector == null ?\n\t\t\tthis.prevObject : this.prevObject.filter( selector )\n\t\t);\n\t}\n} );\n\nfunction sibling( cur, dir ) {\n\twhile ( ( cur = cur[ dir ] ) && cur.nodeType !== 1 ) {}\n\treturn cur;\n}\n\njQuery.each( {\n\tparent: function( elem ) {\n\t\tvar parent = elem.parentNode;\n\t\treturn parent && parent.nodeType !== 11 ? parent : null;\n\t},\n\tparents: function( elem ) {\n\t\treturn dir( elem, \"parentNode\" );\n\t},\n\tparentsUntil: function( elem, _i, until ) {\n\t\treturn dir( elem, \"parentNode\", until );\n\t},\n\tnext: function( elem ) {\n\t\treturn sibling( elem, \"nextSibling\" );\n\t},\n\tprev: function( elem ) {\n\t\treturn sibling( elem, \"previousSibling\" );\n\t},\n\tnextAll: function( elem ) {\n\t\treturn dir( elem, \"nextSibling\" );\n\t},\n\tprevAll: function( elem ) {\n\t\treturn dir( elem, \"previousSibling\" );\n\t},\n\tnextUntil: function( elem, _i, until ) {\n\t\treturn dir( elem, \"nextSibling\", until );\n\t},\n\tprevUntil: function( elem, _i, until ) {\n\t\treturn dir( elem, \"previousSibling\", until );\n\t},\n\tsiblings: function( elem ) {\n\t\treturn siblings( ( elem.parentNode || {} ).firstChild, elem );\n\t},\n\tchildren: function( elem ) {\n\t\treturn siblings( elem.firstChild );\n\t},\n\tcontents: function( elem ) {\n\t\tif ( elem.contentDocument != null &&\n\n\t\t\t// Support: IE 11+\n\t\t\t// elements with no `data` attribute has an object\n\t\t\t// `contentDocument` with a `null` prototype.\n\t\t\tgetProto( elem.contentDocument ) ) {\n\n\t\t\treturn elem.contentDocument;\n\t\t}\n\n\t\t// Support: IE 9 - 11 only, iOS 7 only, Android Browser <=4.3 only\n\t\t// Treat the template element as a regular one in browsers that\n\t\t// don't support it.\n\t\tif ( nodeName( elem, \"template\" ) ) {\n\t\t\telem = elem.content || elem;\n\t\t}\n\n\t\treturn jQuery.merge( [], elem.childNodes );\n\t}\n}, function( name, fn ) {\n\tjQuery.fn[ name ] = function( until, selector ) {\n\t\tvar matched = jQuery.map( this, fn, until );\n\n\t\tif ( name.slice( -5 ) !== \"Until\" ) {\n\t\t\tselector = until;\n\t\t}\n\n\t\tif ( selector && typeof selector === \"string\" ) {\n\t\t\tmatched = jQuery.filter( selector, matched );\n\t\t}\n\n\t\tif ( this.length > 1 ) {\n\n\t\t\t// Remove duplicates\n\t\t\tif ( !guaranteedUnique[ name ] ) {\n\t\t\t\tjQuery.uniqueSort( matched );\n\t\t\t}\n\n\t\t\t// Reverse order for parents* and prev-derivatives\n\t\t\tif ( rparentsprev.test( name ) ) {\n\t\t\t\tmatched.reverse();\n\t\t\t}\n\t\t}\n\n\t\treturn this.pushStack( matched );\n\t};\n} );\nvar rnothtmlwhite = ( /[^\\x20\\t\\r\\n\\f]+/g );\n\n\n\n// Convert String-formatted options into Object-formatted ones\nfunction createOptions( options ) {\n\tvar object = {};\n\tjQuery.each( options.match( rnothtmlwhite ) || [], function( _, flag ) {\n\t\tobject[ flag ] = true;\n\t} );\n\treturn object;\n}\n\n/*\n * Create a callback list using the following parameters:\n *\n *\toptions: an optional list of space-separated options that will change how\n *\t\t\tthe callback list behaves or a more traditional option object\n *\n * By default a callback list will act like an event callback list and can be\n * \"fired\" multiple times.\n *\n * Possible options:\n *\n *\tonce:\t\t\twill ensure the callback list can only be fired once (like a Deferred)\n *\n *\tmemory:\t\t\twill keep track of previous values and will call any callback added\n *\t\t\t\t\tafter the list has been fired right away with the latest \"memorized\"\n *\t\t\t\t\tvalues (like a Deferred)\n *\n *\tunique:\t\t\twill ensure a callback can only be added once (no duplicate in the list)\n *\n *\tstopOnFalse:\tinterrupt callings when a callback returns false\n *\n */\njQuery.Callbacks = function( options ) {\n\n\t// Convert options from String-formatted to Object-formatted if needed\n\t// (we check in cache first)\n\toptions = typeof options === \"string\" ?\n\t\tcreateOptions( options ) :\n\t\tjQuery.extend( {}, options );\n\n\tvar // Flag to know if list is currently firing\n\t\tfiring,\n\n\t\t// Last fire value for non-forgettable lists\n\t\tmemory,\n\n\t\t// Flag to know if list was already fired\n\t\tfired,\n\n\t\t// Flag to prevent firing\n\t\tlocked,\n\n\t\t// Actual callback list\n\t\tlist = [],\n\n\t\t// Queue of execution data for repeatable lists\n\t\tqueue = [],\n\n\t\t// Index of currently firing callback (modified by add/remove as needed)\n\t\tfiringIndex = -1,\n\n\t\t// Fire callbacks\n\t\tfire = function() {\n\n\t\t\t// Enforce single-firing\n\t\t\tlocked = locked || options.once;\n\n\t\t\t// Execute callbacks for all pending executions,\n\t\t\t// respecting firingIndex overrides and runtime changes\n\t\t\tfired = firing = true;\n\t\t\tfor ( ; queue.length; firingIndex = -1 ) {\n\t\t\t\tmemory = queue.shift();\n\t\t\t\twhile ( ++firingIndex < list.length ) {\n\n\t\t\t\t\t// Run callback and check for early termination\n\t\t\t\t\tif ( list[ firingIndex ].apply( memory[ 0 ], memory[ 1 ] ) === false &&\n\t\t\t\t\t\toptions.stopOnFalse ) {\n\n\t\t\t\t\t\t// Jump to end and forget the data so .add doesn't re-fire\n\t\t\t\t\t\tfiringIndex = list.length;\n\t\t\t\t\t\tmemory = false;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Forget the data if we're done with it\n\t\t\tif ( !options.memory ) {\n\t\t\t\tmemory = false;\n\t\t\t}\n\n\t\t\tfiring = false;\n\n\t\t\t// Clean up if we're done firing for good\n\t\t\tif ( locked ) {\n\n\t\t\t\t// Keep an empty list if we have data for future add calls\n\t\t\t\tif ( memory ) {\n\t\t\t\t\tlist = [];\n\n\t\t\t\t// Otherwise, this object is spent\n\t\t\t\t} else {\n\t\t\t\t\tlist = \"\";\n\t\t\t\t}\n\t\t\t}\n\t\t},\n\n\t\t// Actual Callbacks object\n\t\tself = {\n\n\t\t\t// Add a callback or a collection of callbacks to the list\n\t\t\tadd: function() {\n\t\t\t\tif ( list ) {\n\n\t\t\t\t\t// If we have memory from a past run, we should fire after adding\n\t\t\t\t\tif ( memory && !firing ) {\n\t\t\t\t\t\tfiringIndex = list.length - 1;\n\t\t\t\t\t\tqueue.push( memory );\n\t\t\t\t\t}\n\n\t\t\t\t\t( function add( args ) {\n\t\t\t\t\t\tjQuery.each( args, function( _, arg ) {\n\t\t\t\t\t\t\tif ( isFunction( arg ) ) {\n\t\t\t\t\t\t\t\tif ( !options.unique || !self.has( arg ) ) {\n\t\t\t\t\t\t\t\t\tlist.push( arg );\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t} else if ( arg && arg.length && toType( arg ) !== \"string\" ) {\n\n\t\t\t\t\t\t\t\t// Inspect recursively\n\t\t\t\t\t\t\t\tadd( arg );\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} );\n\t\t\t\t\t} )( arguments );\n\n\t\t\t\t\tif ( memory && !firing ) {\n\t\t\t\t\t\tfire();\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\treturn this;\n\t\t\t},\n\n\t\t\t// Remove a callback from the list\n\t\t\tremove: function() {\n\t\t\t\tjQuery.each( arguments, function( _, arg ) {\n\t\t\t\t\tvar index;\n\t\t\t\t\twhile ( ( index = jQuery.inArray( arg, list, index ) ) > -1 ) {\n\t\t\t\t\t\tlist.splice( index, 1 );\n\n\t\t\t\t\t\t// Handle firing indexes\n\t\t\t\t\t\tif ( index <= firingIndex ) {\n\t\t\t\t\t\t\tfiringIndex--;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t} );\n\t\t\t\treturn this;\n\t\t\t},\n\n\t\t\t// Check if a given callback is in the list.\n\t\t\t// If no argument is given, return whether or not list has callbacks attached.\n\t\t\thas: function( fn ) {\n\t\t\t\treturn fn ?\n\t\t\t\t\tjQuery.inArray( fn, list ) > -1 :\n\t\t\t\t\tlist.length > 0;\n\t\t\t},\n\n\t\t\t// Remove all callbacks from the list\n\t\t\tempty: function() {\n\t\t\t\tif ( list ) {\n\t\t\t\t\tlist = [];\n\t\t\t\t}\n\t\t\t\treturn this;\n\t\t\t},\n\n\t\t\t// Disable .fire and .add\n\t\t\t// Abort any current/pending executions\n\t\t\t// Clear all callbacks and values\n\t\t\tdisable: function() {\n\t\t\t\tlocked = queue = [];\n\t\t\t\tlist = memory = \"\";\n\t\t\t\treturn this;\n\t\t\t},\n\t\t\tdisabled: function() {\n\t\t\t\treturn !list;\n\t\t\t},\n\n\t\t\t// Disable .fire\n\t\t\t// Also disable .add unless we have memory (since it would have no effect)\n\t\t\t// Abort any pending executions\n\t\t\tlock: function() {\n\t\t\t\tlocked = queue = [];\n\t\t\t\tif ( !memory && !firing ) {\n\t\t\t\t\tlist = memory = \"\";\n\t\t\t\t}\n\t\t\t\treturn this;\n\t\t\t},\n\t\t\tlocked: function() {\n\t\t\t\treturn !!locked;\n\t\t\t},\n\n\t\t\t// Call all callbacks with the given context and arguments\n\t\t\tfireWith: function( context, args ) {\n\t\t\t\tif ( !locked ) {\n\t\t\t\t\targs = args || [];\n\t\t\t\t\targs = [ context, args.slice ? args.slice() : args ];\n\t\t\t\t\tqueue.push( args );\n\t\t\t\t\tif ( !firing ) {\n\t\t\t\t\t\tfire();\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\treturn this;\n\t\t\t},\n\n\t\t\t// Call all the callbacks with the given arguments\n\t\t\tfire: function() {\n\t\t\t\tself.fireWith( this, arguments );\n\t\t\t\treturn this;\n\t\t\t},\n\n\t\t\t// To know if the callbacks have already been called at least once\n\t\t\tfired: function() {\n\t\t\t\treturn !!fired;\n\t\t\t}\n\t\t};\n\n\treturn self;\n};\n\n\nfunction Identity( v ) {\n\treturn v;\n}\nfunction Thrower( ex ) {\n\tthrow ex;\n}\n\nfunction adoptValue( value, resolve, reject, noValue ) {\n\tvar method;\n\n\ttry {\n\n\t\t// Check for promise aspect first to privilege synchronous behavior\n\t\tif ( value && isFunction( ( method = value.promise ) ) ) {\n\t\t\tmethod.call( value ).done( resolve ).fail( reject );\n\n\t\t// Other thenables\n\t\t} else if ( value && isFunction( ( method = value.then ) ) ) {\n\t\t\tmethod.call( value, resolve, reject );\n\n\t\t// Other non-thenables\n\t\t} else {\n\n\t\t\t// Control `resolve` arguments by letting Array#slice cast boolean `noValue` to integer:\n\t\t\t// * false: [ value ].slice( 0 ) => resolve( value )\n\t\t\t// * true: [ value ].slice( 1 ) => resolve()\n\t\t\tresolve.apply( undefined, [ value ].slice( noValue ) );\n\t\t}\n\n\t// For Promises/A+, convert exceptions into rejections\n\t// Since jQuery.when doesn't unwrap thenables, we can skip the extra checks appearing in\n\t// Deferred#then to conditionally suppress rejection.\n\t} catch ( value ) {\n\n\t\t// Support: Android 4.0 only\n\t\t// Strict mode functions invoked without .call/.apply get global-object context\n\t\treject.apply( undefined, [ value ] );\n\t}\n}\n\njQuery.extend( {\n\n\tDeferred: function( func ) {\n\t\tvar tuples = [\n\n\t\t\t\t// action, add listener, callbacks,\n\t\t\t\t// ... .then handlers, argument index, [final state]\n\t\t\t\t[ \"notify\", \"progress\", jQuery.Callbacks( \"memory\" ),\n\t\t\t\t\tjQuery.Callbacks( \"memory\" ), 2 ],\n\t\t\t\t[ \"resolve\", \"done\", jQuery.Callbacks( \"once memory\" ),\n\t\t\t\t\tjQuery.Callbacks( \"once memory\" ), 0, \"resolved\" ],\n\t\t\t\t[ \"reject\", \"fail\", jQuery.Callbacks( \"once memory\" ),\n\t\t\t\t\tjQuery.Callbacks( \"once memory\" ), 1, \"rejected\" ]\n\t\t\t],\n\t\t\tstate = \"pending\",\n\t\t\tpromise = {\n\t\t\t\tstate: function() {\n\t\t\t\t\treturn state;\n\t\t\t\t},\n\t\t\t\talways: function() {\n\t\t\t\t\tdeferred.done( arguments ).fail( arguments );\n\t\t\t\t\treturn this;\n\t\t\t\t},\n\t\t\t\t\"catch\": function( fn ) {\n\t\t\t\t\treturn promise.then( null, fn );\n\t\t\t\t},\n\n\t\t\t\t// Keep pipe for back-compat\n\t\t\t\tpipe: function( /* fnDone, fnFail, fnProgress */ ) {\n\t\t\t\t\tvar fns = arguments;\n\n\t\t\t\t\treturn jQuery.Deferred( function( newDefer ) {\n\t\t\t\t\t\tjQuery.each( tuples, function( _i, tuple ) {\n\n\t\t\t\t\t\t\t// Map tuples (progress, done, fail) to arguments (done, fail, progress)\n\t\t\t\t\t\t\tvar fn = isFunction( fns[ tuple[ 4 ] ] ) && fns[ tuple[ 4 ] ];\n\n\t\t\t\t\t\t\t// deferred.progress(function() { bind to newDefer or newDefer.notify })\n\t\t\t\t\t\t\t// deferred.done(function() { bind to newDefer or newDefer.resolve })\n\t\t\t\t\t\t\t// deferred.fail(function() { bind to newDefer or newDefer.reject })\n\t\t\t\t\t\t\tdeferred[ tuple[ 1 ] ]( function() {\n\t\t\t\t\t\t\t\tvar returned = fn && fn.apply( this, arguments );\n\t\t\t\t\t\t\t\tif ( returned && isFunction( returned.promise ) ) {\n\t\t\t\t\t\t\t\t\treturned.promise()\n\t\t\t\t\t\t\t\t\t\t.progress( newDefer.notify )\n\t\t\t\t\t\t\t\t\t\t.done( newDefer.resolve )\n\t\t\t\t\t\t\t\t\t\t.fail( newDefer.reject );\n\t\t\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\t\t\tnewDefer[ tuple[ 0 ] + \"With\" ](\n\t\t\t\t\t\t\t\t\t\tthis,\n\t\t\t\t\t\t\t\t\t\tfn ? [ returned ] : arguments\n\t\t\t\t\t\t\t\t\t);\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t} );\n\t\t\t\t\t\t} );\n\t\t\t\t\t\tfns = null;\n\t\t\t\t\t} ).promise();\n\t\t\t\t},\n\t\t\t\tthen: function( onFulfilled, onRejected, onProgress ) {\n\t\t\t\t\tvar maxDepth = 0;\n\t\t\t\t\tfunction resolve( depth, deferred, handler, special ) {\n\t\t\t\t\t\treturn function() {\n\t\t\t\t\t\t\tvar that = this,\n\t\t\t\t\t\t\t\targs = arguments,\n\t\t\t\t\t\t\t\tmightThrow = function() {\n\t\t\t\t\t\t\t\t\tvar returned, then;\n\n\t\t\t\t\t\t\t\t\t// Support: Promises/A+ section 2.3.3.3.3\n\t\t\t\t\t\t\t\t\t// https://promisesaplus.com/#point-59\n\t\t\t\t\t\t\t\t\t// Ignore double-resolution attempts\n\t\t\t\t\t\t\t\t\tif ( depth < maxDepth ) {\n\t\t\t\t\t\t\t\t\t\treturn;\n\t\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t\treturned = handler.apply( that, args );\n\n\t\t\t\t\t\t\t\t\t// Support: Promises/A+ section 2.3.1\n\t\t\t\t\t\t\t\t\t// https://promisesaplus.com/#point-48\n\t\t\t\t\t\t\t\t\tif ( returned === deferred.promise() ) {\n\t\t\t\t\t\t\t\t\t\tthrow new TypeError( \"Thenable self-resolution\" );\n\t\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t\t// Support: Promises/A+ sections 2.3.3.1, 3.5\n\t\t\t\t\t\t\t\t\t// https://promisesaplus.com/#point-54\n\t\t\t\t\t\t\t\t\t// https://promisesaplus.com/#point-75\n\t\t\t\t\t\t\t\t\t// Retrieve `then` only once\n\t\t\t\t\t\t\t\t\tthen = returned &&\n\n\t\t\t\t\t\t\t\t\t\t// Support: Promises/A+ section 2.3.4\n\t\t\t\t\t\t\t\t\t\t// https://promisesaplus.com/#point-64\n\t\t\t\t\t\t\t\t\t\t// Only check objects and functions for thenability\n\t\t\t\t\t\t\t\t\t\t( typeof returned === \"object\" ||\n\t\t\t\t\t\t\t\t\t\t\ttypeof returned === \"function\" ) &&\n\t\t\t\t\t\t\t\t\t\treturned.then;\n\n\t\t\t\t\t\t\t\t\t// Handle a returned thenable\n\t\t\t\t\t\t\t\t\tif ( isFunction( then ) ) {\n\n\t\t\t\t\t\t\t\t\t\t// Special processors (notify) just wait for resolution\n\t\t\t\t\t\t\t\t\t\tif ( special ) {\n\t\t\t\t\t\t\t\t\t\t\tthen.call(\n\t\t\t\t\t\t\t\t\t\t\t\treturned,\n\t\t\t\t\t\t\t\t\t\t\t\tresolve( maxDepth, deferred, Identity, special ),\n\t\t\t\t\t\t\t\t\t\t\t\tresolve( maxDepth, deferred, Thrower, special )\n\t\t\t\t\t\t\t\t\t\t\t);\n\n\t\t\t\t\t\t\t\t\t\t// Normal processors (resolve) also hook into progress\n\t\t\t\t\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t\t\t\t\t// ...and disregard older resolution values\n\t\t\t\t\t\t\t\t\t\t\tmaxDepth++;\n\n\t\t\t\t\t\t\t\t\t\t\tthen.call(\n\t\t\t\t\t\t\t\t\t\t\t\treturned,\n\t\t\t\t\t\t\t\t\t\t\t\tresolve( maxDepth, deferred, Identity, special ),\n\t\t\t\t\t\t\t\t\t\t\t\tresolve( maxDepth, deferred, Thrower, special ),\n\t\t\t\t\t\t\t\t\t\t\t\tresolve( maxDepth, deferred, Identity,\n\t\t\t\t\t\t\t\t\t\t\t\t\tdeferred.notifyWith )\n\t\t\t\t\t\t\t\t\t\t\t);\n\t\t\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t\t// Handle all other returned values\n\t\t\t\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t\t\t\t// Only substitute handlers pass on context\n\t\t\t\t\t\t\t\t\t\t// and multiple values (non-spec behavior)\n\t\t\t\t\t\t\t\t\t\tif ( handler !== Identity ) {\n\t\t\t\t\t\t\t\t\t\t\tthat = undefined;\n\t\t\t\t\t\t\t\t\t\t\targs = [ returned ];\n\t\t\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t\t\t// Process the value(s)\n\t\t\t\t\t\t\t\t\t\t// Default process is resolve\n\t\t\t\t\t\t\t\t\t\t( special || deferred.resolveWith )( that, args );\n\t\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\t},\n\n\t\t\t\t\t\t\t\t// Only normal processors (resolve) catch and reject exceptions\n\t\t\t\t\t\t\t\tprocess = special ?\n\t\t\t\t\t\t\t\t\tmightThrow :\n\t\t\t\t\t\t\t\t\tfunction() {\n\t\t\t\t\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\t\t\t\t\tmightThrow();\n\t\t\t\t\t\t\t\t\t\t} catch ( e ) {\n\n\t\t\t\t\t\t\t\t\t\t\tif ( jQuery.Deferred.exceptionHook ) {\n\t\t\t\t\t\t\t\t\t\t\t\tjQuery.Deferred.exceptionHook( e,\n\t\t\t\t\t\t\t\t\t\t\t\t\tprocess.error );\n\t\t\t\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t\t\t\t// Support: Promises/A+ section 2.3.3.3.4.1\n\t\t\t\t\t\t\t\t\t\t\t// https://promisesaplus.com/#point-61\n\t\t\t\t\t\t\t\t\t\t\t// Ignore post-resolution exceptions\n\t\t\t\t\t\t\t\t\t\t\tif ( depth + 1 >= maxDepth ) {\n\n\t\t\t\t\t\t\t\t\t\t\t\t// Only substitute handlers pass on context\n\t\t\t\t\t\t\t\t\t\t\t\t// and multiple values (non-spec behavior)\n\t\t\t\t\t\t\t\t\t\t\t\tif ( handler !== Thrower ) {\n\t\t\t\t\t\t\t\t\t\t\t\t\tthat = undefined;\n\t\t\t\t\t\t\t\t\t\t\t\t\targs = [ e ];\n\t\t\t\t\t\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\t\t\t\t\t\tdeferred.rejectWith( that, args );\n\t\t\t\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\t\t};\n\n\t\t\t\t\t\t\t// Support: Promises/A+ section 2.3.3.3.1\n\t\t\t\t\t\t\t// https://promisesaplus.com/#point-57\n\t\t\t\t\t\t\t// Re-resolve promises immediately to dodge false rejection from\n\t\t\t\t\t\t\t// subsequent errors\n\t\t\t\t\t\t\tif ( depth ) {\n\t\t\t\t\t\t\t\tprocess();\n\t\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t\t// Call an optional hook to record the error, in case of exception\n\t\t\t\t\t\t\t\t// since it's otherwise lost when execution goes async\n\t\t\t\t\t\t\t\tif ( jQuery.Deferred.getErrorHook ) {\n\t\t\t\t\t\t\t\t\tprocess.error = jQuery.Deferred.getErrorHook();\n\n\t\t\t\t\t\t\t\t// The deprecated alias of the above. While the name suggests\n\t\t\t\t\t\t\t\t// returning the stack, not an error instance, jQuery just passes\n\t\t\t\t\t\t\t\t// it directly to `console.warn` so both will work; an instance\n\t\t\t\t\t\t\t\t// just better cooperates with source maps.\n\t\t\t\t\t\t\t\t} else if ( jQuery.Deferred.getStackHook ) {\n\t\t\t\t\t\t\t\t\tprocess.error = jQuery.Deferred.getStackHook();\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\twindow.setTimeout( process );\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t};\n\t\t\t\t\t}\n\n\t\t\t\t\treturn jQuery.Deferred( function( newDefer ) {\n\n\t\t\t\t\t\t// progress_handlers.add( ... )\n\t\t\t\t\t\ttuples[ 0 ][ 3 ].add(\n\t\t\t\t\t\t\tresolve(\n\t\t\t\t\t\t\t\t0,\n\t\t\t\t\t\t\t\tnewDefer,\n\t\t\t\t\t\t\t\tisFunction( onProgress ) ?\n\t\t\t\t\t\t\t\t\tonProgress :\n\t\t\t\t\t\t\t\t\tIdentity,\n\t\t\t\t\t\t\t\tnewDefer.notifyWith\n\t\t\t\t\t\t\t)\n\t\t\t\t\t\t);\n\n\t\t\t\t\t\t// fulfilled_handlers.add( ... )\n\t\t\t\t\t\ttuples[ 1 ][ 3 ].add(\n\t\t\t\t\t\t\tresolve(\n\t\t\t\t\t\t\t\t0,\n\t\t\t\t\t\t\t\tnewDefer,\n\t\t\t\t\t\t\t\tisFunction( onFulfilled ) ?\n\t\t\t\t\t\t\t\t\tonFulfilled :\n\t\t\t\t\t\t\t\t\tIdentity\n\t\t\t\t\t\t\t)\n\t\t\t\t\t\t);\n\n\t\t\t\t\t\t// rejected_handlers.add( ... )\n\t\t\t\t\t\ttuples[ 2 ][ 3 ].add(\n\t\t\t\t\t\t\tresolve(\n\t\t\t\t\t\t\t\t0,\n\t\t\t\t\t\t\t\tnewDefer,\n\t\t\t\t\t\t\t\tisFunction( onRejected ) ?\n\t\t\t\t\t\t\t\t\tonRejected :\n\t\t\t\t\t\t\t\t\tThrower\n\t\t\t\t\t\t\t)\n\t\t\t\t\t\t);\n\t\t\t\t\t} ).promise();\n\t\t\t\t},\n\n\t\t\t\t// Get a promise for this deferred\n\t\t\t\t// If obj is provided, the promise aspect is added to the object\n\t\t\t\tpromise: function( obj ) {\n\t\t\t\t\treturn obj != null ? jQuery.extend( obj, promise ) : promise;\n\t\t\t\t}\n\t\t\t},\n\t\t\tdeferred = {};\n\n\t\t// Add list-specific methods\n\t\tjQuery.each( tuples, function( i, tuple ) {\n\t\t\tvar list = tuple[ 2 ],\n\t\t\t\tstateString = tuple[ 5 ];\n\n\t\t\t// promise.progress = list.add\n\t\t\t// promise.done = list.add\n\t\t\t// promise.fail = list.add\n\t\t\tpromise[ tuple[ 1 ] ] = list.add;\n\n\t\t\t// Handle state\n\t\t\tif ( stateString ) {\n\t\t\t\tlist.add(\n\t\t\t\t\tfunction() {\n\n\t\t\t\t\t\t// state = \"resolved\" (i.e., fulfilled)\n\t\t\t\t\t\t// state = \"rejected\"\n\t\t\t\t\t\tstate = stateString;\n\t\t\t\t\t},\n\n\t\t\t\t\t// rejected_callbacks.disable\n\t\t\t\t\t// fulfilled_callbacks.disable\n\t\t\t\t\ttuples[ 3 - i ][ 2 ].disable,\n\n\t\t\t\t\t// rejected_handlers.disable\n\t\t\t\t\t// fulfilled_handlers.disable\n\t\t\t\t\ttuples[ 3 - i ][ 3 ].disable,\n\n\t\t\t\t\t// progress_callbacks.lock\n\t\t\t\t\ttuples[ 0 ][ 2 ].lock,\n\n\t\t\t\t\t// progress_handlers.lock\n\t\t\t\t\ttuples[ 0 ][ 3 ].lock\n\t\t\t\t);\n\t\t\t}\n\n\t\t\t// progress_handlers.fire\n\t\t\t// fulfilled_handlers.fire\n\t\t\t// rejected_handlers.fire\n\t\t\tlist.add( tuple[ 3 ].fire );\n\n\t\t\t// deferred.notify = function() { deferred.notifyWith(...) }\n\t\t\t// deferred.resolve = function() { deferred.resolveWith(...) }\n\t\t\t// deferred.reject = function() { deferred.rejectWith(...) }\n\t\t\tdeferred[ tuple[ 0 ] ] = function() {\n\t\t\t\tdeferred[ tuple[ 0 ] + \"With\" ]( this === deferred ? undefined : this, arguments );\n\t\t\t\treturn this;\n\t\t\t};\n\n\t\t\t// deferred.notifyWith = list.fireWith\n\t\t\t// deferred.resolveWith = list.fireWith\n\t\t\t// deferred.rejectWith = list.fireWith\n\t\t\tdeferred[ tuple[ 0 ] + \"With\" ] = list.fireWith;\n\t\t} );\n\n\t\t// Make the deferred a promise\n\t\tpromise.promise( deferred );\n\n\t\t// Call given func if any\n\t\tif ( func ) {\n\t\t\tfunc.call( deferred, deferred );\n\t\t}\n\n\t\t// All done!\n\t\treturn deferred;\n\t},\n\n\t// Deferred helper\n\twhen: function( singleValue ) {\n\t\tvar\n\n\t\t\t// count of uncompleted subordinates\n\t\t\tremaining = arguments.length,\n\n\t\t\t// count of unprocessed arguments\n\t\t\ti = remaining,\n\n\t\t\t// subordinate fulfillment data\n\t\t\tresolveContexts = Array( i ),\n\t\t\tresolveValues = slice.call( arguments ),\n\n\t\t\t// the primary Deferred\n\t\t\tprimary = jQuery.Deferred(),\n\n\t\t\t// subordinate callback factory\n\t\t\tupdateFunc = function( i ) {\n\t\t\t\treturn function( value ) {\n\t\t\t\t\tresolveContexts[ i ] = this;\n\t\t\t\t\tresolveValues[ i ] = arguments.length > 1 ? slice.call( arguments ) : value;\n\t\t\t\t\tif ( !( --remaining ) ) {\n\t\t\t\t\t\tprimary.resolveWith( resolveContexts, resolveValues );\n\t\t\t\t\t}\n\t\t\t\t};\n\t\t\t};\n\n\t\t// Single- and empty arguments are adopted like Promise.resolve\n\t\tif ( remaining <= 1 ) {\n\t\t\tadoptValue( singleValue, primary.done( updateFunc( i ) ).resolve, primary.reject,\n\t\t\t\t!remaining );\n\n\t\t\t// Use .then() to unwrap secondary thenables (cf. gh-3000)\n\t\t\tif ( primary.state() === \"pending\" ||\n\t\t\t\tisFunction( resolveValues[ i ] && resolveValues[ i ].then ) ) {\n\n\t\t\t\treturn primary.then();\n\t\t\t}\n\t\t}\n\n\t\t// Multiple arguments are aggregated like Promise.all array elements\n\t\twhile ( i-- ) {\n\t\t\tadoptValue( resolveValues[ i ], updateFunc( i ), primary.reject );\n\t\t}\n\n\t\treturn primary.promise();\n\t}\n} );\n\n\n// These usually indicate a programmer mistake during development,\n// warn about them ASAP rather than swallowing them by default.\nvar rerrorNames = /^(Eval|Internal|Range|Reference|Syntax|Type|URI)Error$/;\n\n// If `jQuery.Deferred.getErrorHook` is defined, `asyncError` is an error\n// captured before the async barrier to get the original error cause\n// which may otherwise be hidden.\njQuery.Deferred.exceptionHook = function( error, asyncError ) {\n\n\t// Support: IE 8 - 9 only\n\t// Console exists when dev tools are open, which can happen at any time\n\tif ( window.console && window.console.warn && error && rerrorNames.test( error.name ) ) {\n\t\twindow.console.warn( \"jQuery.Deferred exception: \" + error.message,\n\t\t\terror.stack, asyncError );\n\t}\n};\n\n\n\n\njQuery.readyException = function( error ) {\n\twindow.setTimeout( function() {\n\t\tthrow error;\n\t} );\n};\n\n\n\n\n// The deferred used on DOM ready\nvar readyList = jQuery.Deferred();\n\njQuery.fn.ready = function( fn ) {\n\n\treadyList\n\t\t.then( fn )\n\n\t\t// Wrap jQuery.readyException in a function so that the lookup\n\t\t// happens at the time of error handling instead of callback\n\t\t// registration.\n\t\t.catch( function( error ) {\n\t\t\tjQuery.readyException( error );\n\t\t} );\n\n\treturn this;\n};\n\njQuery.extend( {\n\n\t// Is the DOM ready to be used? Set to true once it occurs.\n\tisReady: false,\n\n\t// A counter to track how many items to wait for before\n\t// the ready event fires. See trac-6781\n\treadyWait: 1,\n\n\t// Handle when the DOM is ready\n\tready: function( wait ) {\n\n\t\t// Abort if there are pending holds or we're already ready\n\t\tif ( wait === true ? --jQuery.readyWait : jQuery.isReady ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Remember that the DOM is ready\n\t\tjQuery.isReady = true;\n\n\t\t// If a normal DOM Ready event fired, decrement, and wait if need be\n\t\tif ( wait !== true && --jQuery.readyWait > 0 ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// If there are functions bound, to execute\n\t\treadyList.resolveWith( document, [ jQuery ] );\n\t}\n} );\n\njQuery.ready.then = readyList.then;\n\n// The ready event handler and self cleanup method\nfunction completed() {\n\tdocument.removeEventListener( \"DOMContentLoaded\", completed );\n\twindow.removeEventListener( \"load\", completed );\n\tjQuery.ready();\n}\n\n// Catch cases where $(document).ready() is called\n// after the browser event has already occurred.\n// Support: IE <=9 - 10 only\n// Older IE sometimes signals \"interactive\" too soon\nif ( document.readyState === \"complete\" ||\n\t( document.readyState !== \"loading\" && !document.documentElement.doScroll ) ) {\n\n\t// Handle it asynchronously to allow scripts the opportunity to delay ready\n\twindow.setTimeout( jQuery.ready );\n\n} else {\n\n\t// Use the handy event callback\n\tdocument.addEventListener( \"DOMContentLoaded\", completed );\n\n\t// A fallback to window.onload, that will always work\n\twindow.addEventListener( \"load\", completed );\n}\n\n\n\n\n// Multifunctional method to get and set values of a collection\n// The value/s can optionally be executed if it's a function\nvar access = function( elems, fn, key, value, chainable, emptyGet, raw ) {\n\tvar i = 0,\n\t\tlen = elems.length,\n\t\tbulk = key == null;\n\n\t// Sets many values\n\tif ( toType( key ) === \"object\" ) {\n\t\tchainable = true;\n\t\tfor ( i in key ) {\n\t\t\taccess( elems, fn, i, key[ i ], true, emptyGet, raw );\n\t\t}\n\n\t// Sets one value\n\t} else if ( value !== undefined ) {\n\t\tchainable = true;\n\n\t\tif ( !isFunction( value ) ) {\n\t\t\traw = true;\n\t\t}\n\n\t\tif ( bulk ) {\n\n\t\t\t// Bulk operations run against the entire set\n\t\t\tif ( raw ) {\n\t\t\t\tfn.call( elems, value );\n\t\t\t\tfn = null;\n\n\t\t\t// ...except when executing function values\n\t\t\t} else {\n\t\t\t\tbulk = fn;\n\t\t\t\tfn = function( elem, _key, value ) {\n\t\t\t\t\treturn bulk.call( jQuery( elem ), value );\n\t\t\t\t};\n\t\t\t}\n\t\t}\n\n\t\tif ( fn ) {\n\t\t\tfor ( ; i < len; i++ ) {\n\t\t\t\tfn(\n\t\t\t\t\telems[ i ], key, raw ?\n\t\t\t\t\t\tvalue :\n\t\t\t\t\t\tvalue.call( elems[ i ], i, fn( elems[ i ], key ) )\n\t\t\t\t);\n\t\t\t}\n\t\t}\n\t}\n\n\tif ( chainable ) {\n\t\treturn elems;\n\t}\n\n\t// Gets\n\tif ( bulk ) {\n\t\treturn fn.call( elems );\n\t}\n\n\treturn len ? fn( elems[ 0 ], key ) : emptyGet;\n};\n\n\n// Matches dashed string for camelizing\nvar rmsPrefix = /^-ms-/,\n\trdashAlpha = /-([a-z])/g;\n\n// Used by camelCase as callback to replace()\nfunction fcamelCase( _all, letter ) {\n\treturn letter.toUpperCase();\n}\n\n// Convert dashed to camelCase; used by the css and data modules\n// Support: IE <=9 - 11, Edge 12 - 15\n// Microsoft forgot to hump their vendor prefix (trac-9572)\nfunction camelCase( string ) {\n\treturn string.replace( rmsPrefix, \"ms-\" ).replace( rdashAlpha, fcamelCase );\n}\nvar acceptData = function( owner ) {\n\n\t// Accepts only:\n\t// - Node\n\t// - Node.ELEMENT_NODE\n\t// - Node.DOCUMENT_NODE\n\t// - Object\n\t// - Any\n\treturn owner.nodeType === 1 || owner.nodeType === 9 || !( +owner.nodeType );\n};\n\n\n\n\nfunction Data() {\n\tthis.expando = jQuery.expando + Data.uid++;\n}\n\nData.uid = 1;\n\nData.prototype = {\n\n\tcache: function( owner ) {\n\n\t\t// Check if the owner object already has a cache\n\t\tvar value = owner[ this.expando ];\n\n\t\t// If not, create one\n\t\tif ( !value ) {\n\t\t\tvalue = {};\n\n\t\t\t// We can accept data for non-element nodes in modern browsers,\n\t\t\t// but we should not, see trac-8335.\n\t\t\t// Always return an empty object.\n\t\t\tif ( acceptData( owner ) ) {\n\n\t\t\t\t// If it is a node unlikely to be stringify-ed or looped over\n\t\t\t\t// use plain assignment\n\t\t\t\tif ( owner.nodeType ) {\n\t\t\t\t\towner[ this.expando ] = value;\n\n\t\t\t\t// Otherwise secure it in a non-enumerable property\n\t\t\t\t// configurable must be true to allow the property to be\n\t\t\t\t// deleted when data is removed\n\t\t\t\t} else {\n\t\t\t\t\tObject.defineProperty( owner, this.expando, {\n\t\t\t\t\t\tvalue: value,\n\t\t\t\t\t\tconfigurable: true\n\t\t\t\t\t} );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn value;\n\t},\n\tset: function( owner, data, value ) {\n\t\tvar prop,\n\t\t\tcache = this.cache( owner );\n\n\t\t// Handle: [ owner, key, value ] args\n\t\t// Always use camelCase key (gh-2257)\n\t\tif ( typeof data === \"string\" ) {\n\t\t\tcache[ camelCase( data ) ] = value;\n\n\t\t// Handle: [ owner, { properties } ] args\n\t\t} else {\n\n\t\t\t// Copy the properties one-by-one to the cache object\n\t\t\tfor ( prop in data ) {\n\t\t\t\tcache[ camelCase( prop ) ] = data[ prop ];\n\t\t\t}\n\t\t}\n\t\treturn cache;\n\t},\n\tget: function( owner, key ) {\n\t\treturn key === undefined ?\n\t\t\tthis.cache( owner ) :\n\n\t\t\t// Always use camelCase key (gh-2257)\n\t\t\towner[ this.expando ] && owner[ this.expando ][ camelCase( key ) ];\n\t},\n\taccess: function( owner, key, value ) {\n\n\t\t// In cases where either:\n\t\t//\n\t\t// 1. No key was specified\n\t\t// 2. A string key was specified, but no value provided\n\t\t//\n\t\t// Take the \"read\" path and allow the get method to determine\n\t\t// which value to return, respectively either:\n\t\t//\n\t\t// 1. The entire cache object\n\t\t// 2. The data stored at the key\n\t\t//\n\t\tif ( key === undefined ||\n\t\t\t\t( ( key && typeof key === \"string\" ) && value === undefined ) ) {\n\n\t\t\treturn this.get( owner, key );\n\t\t}\n\n\t\t// When the key is not a string, or both a key and value\n\t\t// are specified, set or extend (existing objects) with either:\n\t\t//\n\t\t// 1. An object of properties\n\t\t// 2. A key and value\n\t\t//\n\t\tthis.set( owner, key, value );\n\n\t\t// Since the \"set\" path can have two possible entry points\n\t\t// return the expected data based on which path was taken[*]\n\t\treturn value !== undefined ? value : key;\n\t},\n\tremove: function( owner, key ) {\n\t\tvar i,\n\t\t\tcache = owner[ this.expando ];\n\n\t\tif ( cache === undefined ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( key !== undefined ) {\n\n\t\t\t// Support array or space separated string of keys\n\t\t\tif ( Array.isArray( key ) ) {\n\n\t\t\t\t// If key is an array of keys...\n\t\t\t\t// We always set camelCase keys, so remove that.\n\t\t\t\tkey = key.map( camelCase );\n\t\t\t} else {\n\t\t\t\tkey = camelCase( key );\n\n\t\t\t\t// If a key with the spaces exists, use it.\n\t\t\t\t// Otherwise, create an array by matching non-whitespace\n\t\t\t\tkey = key in cache ?\n\t\t\t\t\t[ key ] :\n\t\t\t\t\t( key.match( rnothtmlwhite ) || [] );\n\t\t\t}\n\n\t\t\ti = key.length;\n\n\t\t\twhile ( i-- ) {\n\t\t\t\tdelete cache[ key[ i ] ];\n\t\t\t}\n\t\t}\n\n\t\t// Remove the expando if there's no more data\n\t\tif ( key === undefined || jQuery.isEmptyObject( cache ) ) {\n\n\t\t\t// Support: Chrome <=35 - 45\n\t\t\t// Webkit & Blink performance suffers when deleting properties\n\t\t\t// from DOM nodes, so set to undefined instead\n\t\t\t// https://bugs.chromium.org/p/chromium/issues/detail?id=378607 (bug restricted)\n\t\t\tif ( owner.nodeType ) {\n\t\t\t\towner[ this.expando ] = undefined;\n\t\t\t} else {\n\t\t\t\tdelete owner[ this.expando ];\n\t\t\t}\n\t\t}\n\t},\n\thasData: function( owner ) {\n\t\tvar cache = owner[ this.expando ];\n\t\treturn cache !== undefined && !jQuery.isEmptyObject( cache );\n\t}\n};\nvar dataPriv = new Data();\n\nvar dataUser = new Data();\n\n\n\n//\tImplementation Summary\n//\n//\t1. Enforce API surface and semantic compatibility with 1.9.x branch\n//\t2. Improve the module's maintainability by reducing the storage\n//\t\tpaths to a single mechanism.\n//\t3. Use the same single mechanism to support \"private\" and \"user\" data.\n//\t4. _Never_ expose \"private\" data to user code (TODO: Drop _data, _removeData)\n//\t5. Avoid exposing implementation details on user objects (eg. expando properties)\n//\t6. Provide a clear path for implementation upgrade to WeakMap in 2014\n\nvar rbrace = /^(?:\\{[\\w\\W]*\\}|\\[[\\w\\W]*\\])$/,\n\trmultiDash = /[A-Z]/g;\n\nfunction getData( data ) {\n\tif ( data === \"true\" ) {\n\t\treturn true;\n\t}\n\n\tif ( data === \"false\" ) {\n\t\treturn false;\n\t}\n\n\tif ( data === \"null\" ) {\n\t\treturn null;\n\t}\n\n\t// Only convert to a number if it doesn't change the string\n\tif ( data === +data + \"\" ) {\n\t\treturn +data;\n\t}\n\n\tif ( rbrace.test( data ) ) {\n\t\treturn JSON.parse( data );\n\t}\n\n\treturn data;\n}\n\nfunction dataAttr( elem, key, data ) {\n\tvar name;\n\n\t// If nothing was found internally, try to fetch any\n\t// data from the HTML5 data-* attribute\n\tif ( data === undefined && elem.nodeType === 1 ) {\n\t\tname = \"data-\" + key.replace( rmultiDash, \"-$&\" ).toLowerCase();\n\t\tdata = elem.getAttribute( name );\n\n\t\tif ( typeof data === \"string\" ) {\n\t\t\ttry {\n\t\t\t\tdata = getData( data );\n\t\t\t} catch ( e ) {}\n\n\t\t\t// Make sure we set the data so it isn't changed later\n\t\t\tdataUser.set( elem, key, data );\n\t\t} else {\n\t\t\tdata = undefined;\n\t\t}\n\t}\n\treturn data;\n}\n\njQuery.extend( {\n\thasData: function( elem ) {\n\t\treturn dataUser.hasData( elem ) || dataPriv.hasData( elem );\n\t},\n\n\tdata: function( elem, name, data ) {\n\t\treturn dataUser.access( elem, name, data );\n\t},\n\n\tremoveData: function( elem, name ) {\n\t\tdataUser.remove( elem, name );\n\t},\n\n\t// TODO: Now that all calls to _data and _removeData have been replaced\n\t// with direct calls to dataPriv methods, these can be deprecated.\n\t_data: function( elem, name, data ) {\n\t\treturn dataPriv.access( elem, name, data );\n\t},\n\n\t_removeData: function( elem, name ) {\n\t\tdataPriv.remove( elem, name );\n\t}\n} );\n\njQuery.fn.extend( {\n\tdata: function( key, value ) {\n\t\tvar i, name, data,\n\t\t\telem = this[ 0 ],\n\t\t\tattrs = elem && elem.attributes;\n\n\t\t// Gets all values\n\t\tif ( key === undefined ) {\n\t\t\tif ( this.length ) {\n\t\t\t\tdata = dataUser.get( elem );\n\n\t\t\t\tif ( elem.nodeType === 1 && !dataPriv.get( elem, \"hasDataAttrs\" ) ) {\n\t\t\t\t\ti = attrs.length;\n\t\t\t\t\twhile ( i-- ) {\n\n\t\t\t\t\t\t// Support: IE 11 only\n\t\t\t\t\t\t// The attrs elements can be null (trac-14894)\n\t\t\t\t\t\tif ( attrs[ i ] ) {\n\t\t\t\t\t\t\tname = attrs[ i ].name;\n\t\t\t\t\t\t\tif ( name.indexOf( \"data-\" ) === 0 ) {\n\t\t\t\t\t\t\t\tname = camelCase( name.slice( 5 ) );\n\t\t\t\t\t\t\t\tdataAttr( elem, name, data[ name ] );\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t\tdataPriv.set( elem, \"hasDataAttrs\", true );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn data;\n\t\t}\n\n\t\t// Sets multiple values\n\t\tif ( typeof key === \"object\" ) {\n\t\t\treturn this.each( function() {\n\t\t\t\tdataUser.set( this, key );\n\t\t\t} );\n\t\t}\n\n\t\treturn access( this, function( value ) {\n\t\t\tvar data;\n\n\t\t\t// The calling jQuery object (element matches) is not empty\n\t\t\t// (and therefore has an element appears at this[ 0 ]) and the\n\t\t\t// `value` parameter was not undefined. An empty jQuery object\n\t\t\t// will result in `undefined` for elem = this[ 0 ] which will\n\t\t\t// throw an exception if an attempt to read a data cache is made.\n\t\t\tif ( elem && value === undefined ) {\n\n\t\t\t\t// Attempt to get data from the cache\n\t\t\t\t// The key will always be camelCased in Data\n\t\t\t\tdata = dataUser.get( elem, key );\n\t\t\t\tif ( data !== undefined ) {\n\t\t\t\t\treturn data;\n\t\t\t\t}\n\n\t\t\t\t// Attempt to \"discover\" the data in\n\t\t\t\t// HTML5 custom data-* attrs\n\t\t\t\tdata = dataAttr( elem, key );\n\t\t\t\tif ( data !== undefined ) {\n\t\t\t\t\treturn data;\n\t\t\t\t}\n\n\t\t\t\t// We tried really hard, but the data doesn't exist.\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// Set the data...\n\t\t\tthis.each( function() {\n\n\t\t\t\t// We always store the camelCased key\n\t\t\t\tdataUser.set( this, key, value );\n\t\t\t} );\n\t\t}, null, value, arguments.length > 1, null, true );\n\t},\n\n\tremoveData: function( key ) {\n\t\treturn this.each( function() {\n\t\t\tdataUser.remove( this, key );\n\t\t} );\n\t}\n} );\n\n\njQuery.extend( {\n\tqueue: function( elem, type, data ) {\n\t\tvar queue;\n\n\t\tif ( elem ) {\n\t\t\ttype = ( type || \"fx\" ) + \"queue\";\n\t\t\tqueue = dataPriv.get( elem, type );\n\n\t\t\t// Speed up dequeue by getting out quickly if this is just a lookup\n\t\t\tif ( data ) {\n\t\t\t\tif ( !queue || Array.isArray( data ) ) {\n\t\t\t\t\tqueue = dataPriv.access( elem, type, jQuery.makeArray( data ) );\n\t\t\t\t} else {\n\t\t\t\t\tqueue.push( data );\n\t\t\t\t}\n\t\t\t}\n\t\t\treturn queue || [];\n\t\t}\n\t},\n\n\tdequeue: function( elem, type ) {\n\t\ttype = type || \"fx\";\n\n\t\tvar queue = jQuery.queue( elem, type ),\n\t\t\tstartLength = queue.length,\n\t\t\tfn = queue.shift(),\n\t\t\thooks = jQuery._queueHooks( elem, type ),\n\t\t\tnext = function() {\n\t\t\t\tjQuery.dequeue( elem, type );\n\t\t\t};\n\n\t\t// If the fx queue is dequeued, always remove the progress sentinel\n\t\tif ( fn === \"inprogress\" ) {\n\t\t\tfn = queue.shift();\n\t\t\tstartLength--;\n\t\t}\n\n\t\tif ( fn ) {\n\n\t\t\t// Add a progress sentinel to prevent the fx queue from being\n\t\t\t// automatically dequeued\n\t\t\tif ( type === \"fx\" ) {\n\t\t\t\tqueue.unshift( \"inprogress\" );\n\t\t\t}\n\n\t\t\t// Clear up the last queue stop function\n\t\t\tdelete hooks.stop;\n\t\t\tfn.call( elem, next, hooks );\n\t\t}\n\n\t\tif ( !startLength && hooks ) {\n\t\t\thooks.empty.fire();\n\t\t}\n\t},\n\n\t// Not public - generate a queueHooks object, or return the current one\n\t_queueHooks: function( elem, type ) {\n\t\tvar key = type + \"queueHooks\";\n\t\treturn dataPriv.get( elem, key ) || dataPriv.access( elem, key, {\n\t\t\tempty: jQuery.Callbacks( \"once memory\" ).add( function() {\n\t\t\t\tdataPriv.remove( elem, [ type + \"queue\", key ] );\n\t\t\t} )\n\t\t} );\n\t}\n} );\n\njQuery.fn.extend( {\n\tqueue: function( type, data ) {\n\t\tvar setter = 2;\n\n\t\tif ( typeof type !== \"string\" ) {\n\t\t\tdata = type;\n\t\t\ttype = \"fx\";\n\t\t\tsetter--;\n\t\t}\n\n\t\tif ( arguments.length < setter ) {\n\t\t\treturn jQuery.queue( this[ 0 ], type );\n\t\t}\n\n\t\treturn data === undefined ?\n\t\t\tthis :\n\t\t\tthis.each( function() {\n\t\t\t\tvar queue = jQuery.queue( this, type, data );\n\n\t\t\t\t// Ensure a hooks for this queue\n\t\t\t\tjQuery._queueHooks( this, type );\n\n\t\t\t\tif ( type === \"fx\" && queue[ 0 ] !== \"inprogress\" ) {\n\t\t\t\t\tjQuery.dequeue( this, type );\n\t\t\t\t}\n\t\t\t} );\n\t},\n\tdequeue: function( type ) {\n\t\treturn this.each( function() {\n\t\t\tjQuery.dequeue( this, type );\n\t\t} );\n\t},\n\tclearQueue: function( type ) {\n\t\treturn this.queue( type || \"fx\", [] );\n\t},\n\n\t// Get a promise resolved when queues of a certain type\n\t// are emptied (fx is the type by default)\n\tpromise: function( type, obj ) {\n\t\tvar tmp,\n\t\t\tcount = 1,\n\t\t\tdefer = jQuery.Deferred(),\n\t\t\telements = this,\n\t\t\ti = this.length,\n\t\t\tresolve = function() {\n\t\t\t\tif ( !( --count ) ) {\n\t\t\t\t\tdefer.resolveWith( elements, [ elements ] );\n\t\t\t\t}\n\t\t\t};\n\n\t\tif ( typeof type !== \"string\" ) {\n\t\t\tobj = type;\n\t\t\ttype = undefined;\n\t\t}\n\t\ttype = type || \"fx\";\n\n\t\twhile ( i-- ) {\n\t\t\ttmp = dataPriv.get( elements[ i ], type + \"queueHooks\" );\n\t\t\tif ( tmp && tmp.empty ) {\n\t\t\t\tcount++;\n\t\t\t\ttmp.empty.add( resolve );\n\t\t\t}\n\t\t}\n\t\tresolve();\n\t\treturn defer.promise( obj );\n\t}\n} );\nvar pnum = ( /[+-]?(?:\\d*\\.|)\\d+(?:[eE][+-]?\\d+|)/ ).source;\n\nvar rcssNum = new RegExp( \"^(?:([+-])=|)(\" + pnum + \")([a-z%]*)$\", \"i\" );\n\n\nvar cssExpand = [ \"Top\", \"Right\", \"Bottom\", \"Left\" ];\n\nvar documentElement = document.documentElement;\n\n\n\n\tvar isAttached = function( elem ) {\n\t\t\treturn jQuery.contains( elem.ownerDocument, elem );\n\t\t},\n\t\tcomposed = { composed: true };\n\n\t// Support: IE 9 - 11+, Edge 12 - 18+, iOS 10.0 - 10.2 only\n\t// Check attachment across shadow DOM boundaries when possible (gh-3504)\n\t// Support: iOS 10.0-10.2 only\n\t// Early iOS 10 versions support `attachShadow` but not `getRootNode`,\n\t// leading to errors. We need to check for `getRootNode`.\n\tif ( documentElement.getRootNode ) {\n\t\tisAttached = function( elem ) {\n\t\t\treturn jQuery.contains( elem.ownerDocument, elem ) ||\n\t\t\t\telem.getRootNode( composed ) === elem.ownerDocument;\n\t\t};\n\t}\nvar isHiddenWithinTree = function( elem, el ) {\n\n\t\t// isHiddenWithinTree might be called from jQuery#filter function;\n\t\t// in that case, element will be second argument\n\t\telem = el || elem;\n\n\t\t// Inline style trumps all\n\t\treturn elem.style.display === \"none\" ||\n\t\t\telem.style.display === \"\" &&\n\n\t\t\t// Otherwise, check computed style\n\t\t\t// Support: Firefox <=43 - 45\n\t\t\t// Disconnected elements can have computed display: none, so first confirm that elem is\n\t\t\t// in the document.\n\t\t\tisAttached( elem ) &&\n\n\t\t\tjQuery.css( elem, \"display\" ) === \"none\";\n\t};\n\n\n\nfunction adjustCSS( elem, prop, valueParts, tween ) {\n\tvar adjusted, scale,\n\t\tmaxIterations = 20,\n\t\tcurrentValue = tween ?\n\t\t\tfunction() {\n\t\t\t\treturn tween.cur();\n\t\t\t} :\n\t\t\tfunction() {\n\t\t\t\treturn jQuery.css( elem, prop, \"\" );\n\t\t\t},\n\t\tinitial = currentValue(),\n\t\tunit = valueParts && valueParts[ 3 ] || ( jQuery.cssNumber[ prop ] ? \"\" : \"px\" ),\n\n\t\t// Starting value computation is required for potential unit mismatches\n\t\tinitialInUnit = elem.nodeType &&\n\t\t\t( jQuery.cssNumber[ prop ] || unit !== \"px\" && +initial ) &&\n\t\t\trcssNum.exec( jQuery.css( elem, prop ) );\n\n\tif ( initialInUnit && initialInUnit[ 3 ] !== unit ) {\n\n\t\t// Support: Firefox <=54\n\t\t// Halve the iteration target value to prevent interference from CSS upper bounds (gh-2144)\n\t\tinitial = initial / 2;\n\n\t\t// Trust units reported by jQuery.css\n\t\tunit = unit || initialInUnit[ 3 ];\n\n\t\t// Iteratively approximate from a nonzero starting point\n\t\tinitialInUnit = +initial || 1;\n\n\t\twhile ( maxIterations-- ) {\n\n\t\t\t// Evaluate and update our best guess (doubling guesses that zero out).\n\t\t\t// Finish if the scale equals or crosses 1 (making the old*new product non-positive).\n\t\t\tjQuery.style( elem, prop, initialInUnit + unit );\n\t\t\tif ( ( 1 - scale ) * ( 1 - ( scale = currentValue() / initial || 0.5 ) ) <= 0 ) {\n\t\t\t\tmaxIterations = 0;\n\t\t\t}\n\t\t\tinitialInUnit = initialInUnit / scale;\n\n\t\t}\n\n\t\tinitialInUnit = initialInUnit * 2;\n\t\tjQuery.style( elem, prop, initialInUnit + unit );\n\n\t\t// Make sure we update the tween properties later on\n\t\tvalueParts = valueParts || [];\n\t}\n\n\tif ( valueParts ) {\n\t\tinitialInUnit = +initialInUnit || +initial || 0;\n\n\t\t// Apply relative offset (+=/-=) if specified\n\t\tadjusted = valueParts[ 1 ] ?\n\t\t\tinitialInUnit + ( valueParts[ 1 ] + 1 ) * valueParts[ 2 ] :\n\t\t\t+valueParts[ 2 ];\n\t\tif ( tween ) {\n\t\t\ttween.unit = unit;\n\t\t\ttween.start = initialInUnit;\n\t\t\ttween.end = adjusted;\n\t\t}\n\t}\n\treturn adjusted;\n}\n\n\nvar defaultDisplayMap = {};\n\nfunction getDefaultDisplay( elem ) {\n\tvar temp,\n\t\tdoc = elem.ownerDocument,\n\t\tnodeName = elem.nodeName,\n\t\tdisplay = defaultDisplayMap[ nodeName ];\n\n\tif ( display ) {\n\t\treturn display;\n\t}\n\n\ttemp = doc.body.appendChild( doc.createElement( nodeName ) );\n\tdisplay = jQuery.css( temp, \"display\" );\n\n\ttemp.parentNode.removeChild( temp );\n\n\tif ( display === \"none\" ) {\n\t\tdisplay = \"block\";\n\t}\n\tdefaultDisplayMap[ nodeName ] = display;\n\n\treturn display;\n}\n\nfunction showHide( elements, show ) {\n\tvar display, elem,\n\t\tvalues = [],\n\t\tindex = 0,\n\t\tlength = elements.length;\n\n\t// Determine new display value for elements that need to change\n\tfor ( ; index < length; index++ ) {\n\t\telem = elements[ index ];\n\t\tif ( !elem.style ) {\n\t\t\tcontinue;\n\t\t}\n\n\t\tdisplay = elem.style.display;\n\t\tif ( show ) {\n\n\t\t\t// Since we force visibility upon cascade-hidden elements, an immediate (and slow)\n\t\t\t// check is required in this first loop unless we have a nonempty display value (either\n\t\t\t// inline or about-to-be-restored)\n\t\t\tif ( display === \"none\" ) {\n\t\t\t\tvalues[ index ] = dataPriv.get( elem, \"display\" ) || null;\n\t\t\t\tif ( !values[ index ] ) {\n\t\t\t\t\telem.style.display = \"\";\n\t\t\t\t}\n\t\t\t}\n\t\t\tif ( elem.style.display === \"\" && isHiddenWithinTree( elem ) ) {\n\t\t\t\tvalues[ index ] = getDefaultDisplay( elem );\n\t\t\t}\n\t\t} else {\n\t\t\tif ( display !== \"none\" ) {\n\t\t\t\tvalues[ index ] = \"none\";\n\n\t\t\t\t// Remember what we're overwriting\n\t\t\t\tdataPriv.set( elem, \"display\", display );\n\t\t\t}\n\t\t}\n\t}\n\n\t// Set the display of the elements in a second loop to avoid constant reflow\n\tfor ( index = 0; index < length; index++ ) {\n\t\tif ( values[ index ] != null ) {\n\t\t\telements[ index ].style.display = values[ index ];\n\t\t}\n\t}\n\n\treturn elements;\n}\n\njQuery.fn.extend( {\n\tshow: function() {\n\t\treturn showHide( this, true );\n\t},\n\thide: function() {\n\t\treturn showHide( this );\n\t},\n\ttoggle: function( state ) {\n\t\tif ( typeof state === \"boolean\" ) {\n\t\t\treturn state ? this.show() : this.hide();\n\t\t}\n\n\t\treturn this.each( function() {\n\t\t\tif ( isHiddenWithinTree( this ) ) {\n\t\t\t\tjQuery( this ).show();\n\t\t\t} else {\n\t\t\t\tjQuery( this ).hide();\n\t\t\t}\n\t\t} );\n\t}\n} );\nvar rcheckableType = ( /^(?:checkbox|radio)$/i );\n\nvar rtagName = ( /<([a-z][^\\/\\0>\\x20\\t\\r\\n\\f]*)/i );\n\nvar rscriptType = ( /^$|^module$|\\/(?:java|ecma)script/i );\n\n\n\n( function() {\n\tvar fragment = document.createDocumentFragment(),\n\t\tdiv = fragment.appendChild( document.createElement( \"div\" ) ),\n\t\tinput = document.createElement( \"input\" );\n\n\t// Support: Android 4.0 - 4.3 only\n\t// Check state lost if the name is set (trac-11217)\n\t// Support: Windows Web Apps (WWA)\n\t// `name` and `type` must use .setAttribute for WWA (trac-14901)\n\tinput.setAttribute( \"type\", \"radio\" );\n\tinput.setAttribute( \"checked\", \"checked\" );\n\tinput.setAttribute( \"name\", \"t\" );\n\n\tdiv.appendChild( input );\n\n\t// Support: Android <=4.1 only\n\t// Older WebKit doesn't clone checked state correctly in fragments\n\tsupport.checkClone = div.cloneNode( true ).cloneNode( true ).lastChild.checked;\n\n\t// Support: IE <=11 only\n\t// Make sure textarea (and checkbox) defaultValue is properly cloned\n\tdiv.innerHTML = \"\";\n\tsupport.noCloneChecked = !!div.cloneNode( true ).lastChild.defaultValue;\n\n\t// Support: IE <=9 only\n\t// IE <=9 replaces \";\n\tsupport.option = !!div.lastChild;\n} )();\n\n\n// We have to close these tags to support XHTML (trac-13200)\nvar wrapMap = {\n\n\t// XHTML parsers do not magically insert elements in the\n\t// same way that tag soup parsers do. So we cannot shorten\n\t// this by omitting or other required elements.\n\tthead: [ 1, \"\", \"
\" ],\n\tcol: [ 2, \"\", \"
\" ],\n\ttr: [ 2, \"\", \"
\" ],\n\ttd: [ 3, \"\", \"
\" ],\n\n\t_default: [ 0, \"\", \"\" ]\n};\n\nwrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead;\nwrapMap.th = wrapMap.td;\n\n// Support: IE <=9 only\nif ( !support.option ) {\n\twrapMap.optgroup = wrapMap.option = [ 1, \"\" ];\n}\n\n\nfunction getAll( context, tag ) {\n\n\t// Support: IE <=9 - 11 only\n\t// Use typeof to avoid zero-argument method invocation on host objects (trac-15151)\n\tvar ret;\n\n\tif ( typeof context.getElementsByTagName !== \"undefined\" ) {\n\t\tret = context.getElementsByTagName( tag || \"*\" );\n\n\t} else if ( typeof context.querySelectorAll !== \"undefined\" ) {\n\t\tret = context.querySelectorAll( tag || \"*\" );\n\n\t} else {\n\t\tret = [];\n\t}\n\n\tif ( tag === undefined || tag && nodeName( context, tag ) ) {\n\t\treturn jQuery.merge( [ context ], ret );\n\t}\n\n\treturn ret;\n}\n\n\n// Mark scripts as having already been evaluated\nfunction setGlobalEval( elems, refElements ) {\n\tvar i = 0,\n\t\tl = elems.length;\n\n\tfor ( ; i < l; i++ ) {\n\t\tdataPriv.set(\n\t\t\telems[ i ],\n\t\t\t\"globalEval\",\n\t\t\t!refElements || dataPriv.get( refElements[ i ], \"globalEval\" )\n\t\t);\n\t}\n}\n\n\nvar rhtml = /<|&#?\\w+;/;\n\nfunction buildFragment( elems, context, scripts, selection, ignored ) {\n\tvar elem, tmp, tag, wrap, attached, j,\n\t\tfragment = context.createDocumentFragment(),\n\t\tnodes = [],\n\t\ti = 0,\n\t\tl = elems.length;\n\n\tfor ( ; i < l; i++ ) {\n\t\telem = elems[ i ];\n\n\t\tif ( elem || elem === 0 ) {\n\n\t\t\t// Add nodes directly\n\t\t\tif ( toType( elem ) === \"object\" ) {\n\n\t\t\t\t// Support: Android <=4.0 only, PhantomJS 1 only\n\t\t\t\t// push.apply(_, arraylike) throws on ancient WebKit\n\t\t\t\tjQuery.merge( nodes, elem.nodeType ? [ elem ] : elem );\n\n\t\t\t// Convert non-html into a text node\n\t\t\t} else if ( !rhtml.test( elem ) ) {\n\t\t\t\tnodes.push( context.createTextNode( elem ) );\n\n\t\t\t// Convert html into DOM nodes\n\t\t\t} else {\n\t\t\t\ttmp = tmp || fragment.appendChild( context.createElement( \"div\" ) );\n\n\t\t\t\t// Deserialize a standard representation\n\t\t\t\ttag = ( rtagName.exec( elem ) || [ \"\", \"\" ] )[ 1 ].toLowerCase();\n\t\t\t\twrap = wrapMap[ tag ] || wrapMap._default;\n\t\t\t\ttmp.innerHTML = wrap[ 1 ] + jQuery.htmlPrefilter( elem ) + wrap[ 2 ];\n\n\t\t\t\t// Descend through wrappers to the right content\n\t\t\t\tj = wrap[ 0 ];\n\t\t\t\twhile ( j-- ) {\n\t\t\t\t\ttmp = tmp.lastChild;\n\t\t\t\t}\n\n\t\t\t\t// Support: Android <=4.0 only, PhantomJS 1 only\n\t\t\t\t// push.apply(_, arraylike) throws on ancient WebKit\n\t\t\t\tjQuery.merge( nodes, tmp.childNodes );\n\n\t\t\t\t// Remember the top-level container\n\t\t\t\ttmp = fragment.firstChild;\n\n\t\t\t\t// Ensure the created nodes are orphaned (trac-12392)\n\t\t\t\ttmp.textContent = \"\";\n\t\t\t}\n\t\t}\n\t}\n\n\t// Remove wrapper from fragment\n\tfragment.textContent = \"\";\n\n\ti = 0;\n\twhile ( ( elem = nodes[ i++ ] ) ) {\n\n\t\t// Skip elements already in the context collection (trac-4087)\n\t\tif ( selection && jQuery.inArray( elem, selection ) > -1 ) {\n\t\t\tif ( ignored ) {\n\t\t\t\tignored.push( elem );\n\t\t\t}\n\t\t\tcontinue;\n\t\t}\n\n\t\tattached = isAttached( elem );\n\n\t\t// Append to fragment\n\t\ttmp = getAll( fragment.appendChild( elem ), \"script\" );\n\n\t\t// Preserve script evaluation history\n\t\tif ( attached ) {\n\t\t\tsetGlobalEval( tmp );\n\t\t}\n\n\t\t// Capture executables\n\t\tif ( scripts ) {\n\t\t\tj = 0;\n\t\t\twhile ( ( elem = tmp[ j++ ] ) ) {\n\t\t\t\tif ( rscriptType.test( elem.type || \"\" ) ) {\n\t\t\t\t\tscripts.push( elem );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\treturn fragment;\n}\n\n\nvar rtypenamespace = /^([^.]*)(?:\\.(.+)|)/;\n\nfunction returnTrue() {\n\treturn true;\n}\n\nfunction returnFalse() {\n\treturn false;\n}\n\nfunction on( elem, types, selector, data, fn, one ) {\n\tvar origFn, type;\n\n\t// Types can be a map of types/handlers\n\tif ( typeof types === \"object\" ) {\n\n\t\t// ( types-Object, selector, data )\n\t\tif ( typeof selector !== \"string\" ) {\n\n\t\t\t// ( types-Object, data )\n\t\t\tdata = data || selector;\n\t\t\tselector = undefined;\n\t\t}\n\t\tfor ( type in types ) {\n\t\t\ton( elem, type, selector, data, types[ type ], one );\n\t\t}\n\t\treturn elem;\n\t}\n\n\tif ( data == null && fn == null ) {\n\n\t\t// ( types, fn )\n\t\tfn = selector;\n\t\tdata = selector = undefined;\n\t} else if ( fn == null ) {\n\t\tif ( typeof selector === \"string\" ) {\n\n\t\t\t// ( types, selector, fn )\n\t\t\tfn = data;\n\t\t\tdata = undefined;\n\t\t} else {\n\n\t\t\t// ( types, data, fn )\n\t\t\tfn = data;\n\t\t\tdata = selector;\n\t\t\tselector = undefined;\n\t\t}\n\t}\n\tif ( fn === false ) {\n\t\tfn = returnFalse;\n\t} else if ( !fn ) {\n\t\treturn elem;\n\t}\n\n\tif ( one === 1 ) {\n\t\torigFn = fn;\n\t\tfn = function( event ) {\n\n\t\t\t// Can use an empty set, since event contains the info\n\t\t\tjQuery().off( event );\n\t\t\treturn origFn.apply( this, arguments );\n\t\t};\n\n\t\t// Use same guid so caller can remove using origFn\n\t\tfn.guid = origFn.guid || ( origFn.guid = jQuery.guid++ );\n\t}\n\treturn elem.each( function() {\n\t\tjQuery.event.add( this, types, fn, data, selector );\n\t} );\n}\n\n/*\n * Helper functions for managing events -- not part of the public interface.\n * Props to Dean Edwards' addEvent library for many of the ideas.\n */\njQuery.event = {\n\n\tglobal: {},\n\n\tadd: function( elem, types, handler, data, selector ) {\n\n\t\tvar handleObjIn, eventHandle, tmp,\n\t\t\tevents, t, handleObj,\n\t\t\tspecial, handlers, type, namespaces, origType,\n\t\t\telemData = dataPriv.get( elem );\n\n\t\t// Only attach events to objects that accept data\n\t\tif ( !acceptData( elem ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Caller can pass in an object of custom data in lieu of the handler\n\t\tif ( handler.handler ) {\n\t\t\thandleObjIn = handler;\n\t\t\thandler = handleObjIn.handler;\n\t\t\tselector = handleObjIn.selector;\n\t\t}\n\n\t\t// Ensure that invalid selectors throw exceptions at attach time\n\t\t// Evaluate against documentElement in case elem is a non-element node (e.g., document)\n\t\tif ( selector ) {\n\t\t\tjQuery.find.matchesSelector( documentElement, selector );\n\t\t}\n\n\t\t// Make sure that the handler has a unique ID, used to find/remove it later\n\t\tif ( !handler.guid ) {\n\t\t\thandler.guid = jQuery.guid++;\n\t\t}\n\n\t\t// Init the element's event structure and main handler, if this is the first\n\t\tif ( !( events = elemData.events ) ) {\n\t\t\tevents = elemData.events = Object.create( null );\n\t\t}\n\t\tif ( !( eventHandle = elemData.handle ) ) {\n\t\t\teventHandle = elemData.handle = function( e ) {\n\n\t\t\t\t// Discard the second event of a jQuery.event.trigger() and\n\t\t\t\t// when an event is called after a page has unloaded\n\t\t\t\treturn typeof jQuery !== \"undefined\" && jQuery.event.triggered !== e.type ?\n\t\t\t\t\tjQuery.event.dispatch.apply( elem, arguments ) : undefined;\n\t\t\t};\n\t\t}\n\n\t\t// Handle multiple events separated by a space\n\t\ttypes = ( types || \"\" ).match( rnothtmlwhite ) || [ \"\" ];\n\t\tt = types.length;\n\t\twhile ( t-- ) {\n\t\t\ttmp = rtypenamespace.exec( types[ t ] ) || [];\n\t\t\ttype = origType = tmp[ 1 ];\n\t\t\tnamespaces = ( tmp[ 2 ] || \"\" ).split( \".\" ).sort();\n\n\t\t\t// There *must* be a type, no attaching namespace-only handlers\n\t\t\tif ( !type ) {\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\t// If event changes its type, use the special event handlers for the changed type\n\t\t\tspecial = jQuery.event.special[ type ] || {};\n\n\t\t\t// If selector defined, determine special event api type, otherwise given type\n\t\t\ttype = ( selector ? special.delegateType : special.bindType ) || type;\n\n\t\t\t// Update special based on newly reset type\n\t\t\tspecial = jQuery.event.special[ type ] || {};\n\n\t\t\t// handleObj is passed to all event handlers\n\t\t\thandleObj = jQuery.extend( {\n\t\t\t\ttype: type,\n\t\t\t\torigType: origType,\n\t\t\t\tdata: data,\n\t\t\t\thandler: handler,\n\t\t\t\tguid: handler.guid,\n\t\t\t\tselector: selector,\n\t\t\t\tneedsContext: selector && jQuery.expr.match.needsContext.test( selector ),\n\t\t\t\tnamespace: namespaces.join( \".\" )\n\t\t\t}, handleObjIn );\n\n\t\t\t// Init the event handler queue if we're the first\n\t\t\tif ( !( handlers = events[ type ] ) ) {\n\t\t\t\thandlers = events[ type ] = [];\n\t\t\t\thandlers.delegateCount = 0;\n\n\t\t\t\t// Only use addEventListener if the special events handler returns false\n\t\t\t\tif ( !special.setup ||\n\t\t\t\t\tspecial.setup.call( elem, data, namespaces, eventHandle ) === false ) {\n\n\t\t\t\t\tif ( elem.addEventListener ) {\n\t\t\t\t\t\telem.addEventListener( type, eventHandle );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tif ( special.add ) {\n\t\t\t\tspecial.add.call( elem, handleObj );\n\n\t\t\t\tif ( !handleObj.handler.guid ) {\n\t\t\t\t\thandleObj.handler.guid = handler.guid;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Add to the element's handler list, delegates in front\n\t\t\tif ( selector ) {\n\t\t\t\thandlers.splice( handlers.delegateCount++, 0, handleObj );\n\t\t\t} else {\n\t\t\t\thandlers.push( handleObj );\n\t\t\t}\n\n\t\t\t// Keep track of which events have ever been used, for event optimization\n\t\t\tjQuery.event.global[ type ] = true;\n\t\t}\n\n\t},\n\n\t// Detach an event or set of events from an element\n\tremove: function( elem, types, handler, selector, mappedTypes ) {\n\n\t\tvar j, origCount, tmp,\n\t\t\tevents, t, handleObj,\n\t\t\tspecial, handlers, type, namespaces, origType,\n\t\t\telemData = dataPriv.hasData( elem ) && dataPriv.get( elem );\n\n\t\tif ( !elemData || !( events = elemData.events ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Once for each type.namespace in types; type may be omitted\n\t\ttypes = ( types || \"\" ).match( rnothtmlwhite ) || [ \"\" ];\n\t\tt = types.length;\n\t\twhile ( t-- ) {\n\t\t\ttmp = rtypenamespace.exec( types[ t ] ) || [];\n\t\t\ttype = origType = tmp[ 1 ];\n\t\t\tnamespaces = ( tmp[ 2 ] || \"\" ).split( \".\" ).sort();\n\n\t\t\t// Unbind all events (on this namespace, if provided) for the element\n\t\t\tif ( !type ) {\n\t\t\t\tfor ( type in events ) {\n\t\t\t\t\tjQuery.event.remove( elem, type + types[ t ], handler, selector, true );\n\t\t\t\t}\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\tspecial = jQuery.event.special[ type ] || {};\n\t\t\ttype = ( selector ? special.delegateType : special.bindType ) || type;\n\t\t\thandlers = events[ type ] || [];\n\t\t\ttmp = tmp[ 2 ] &&\n\t\t\t\tnew RegExp( \"(^|\\\\.)\" + namespaces.join( \"\\\\.(?:.*\\\\.|)\" ) + \"(\\\\.|$)\" );\n\n\t\t\t// Remove matching events\n\t\t\torigCount = j = handlers.length;\n\t\t\twhile ( j-- ) {\n\t\t\t\thandleObj = handlers[ j ];\n\n\t\t\t\tif ( ( mappedTypes || origType === handleObj.origType ) &&\n\t\t\t\t\t( !handler || handler.guid === handleObj.guid ) &&\n\t\t\t\t\t( !tmp || tmp.test( handleObj.namespace ) ) &&\n\t\t\t\t\t( !selector || selector === handleObj.selector ||\n\t\t\t\t\t\tselector === \"**\" && handleObj.selector ) ) {\n\t\t\t\t\thandlers.splice( j, 1 );\n\n\t\t\t\t\tif ( handleObj.selector ) {\n\t\t\t\t\t\thandlers.delegateCount--;\n\t\t\t\t\t}\n\t\t\t\t\tif ( special.remove ) {\n\t\t\t\t\t\tspecial.remove.call( elem, handleObj );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Remove generic event handler if we removed something and no more handlers exist\n\t\t\t// (avoids potential for endless recursion during removal of special event handlers)\n\t\t\tif ( origCount && !handlers.length ) {\n\t\t\t\tif ( !special.teardown ||\n\t\t\t\t\tspecial.teardown.call( elem, namespaces, elemData.handle ) === false ) {\n\n\t\t\t\t\tjQuery.removeEvent( elem, type, elemData.handle );\n\t\t\t\t}\n\n\t\t\t\tdelete events[ type ];\n\t\t\t}\n\t\t}\n\n\t\t// Remove data and the expando if it's no longer used\n\t\tif ( jQuery.isEmptyObject( events ) ) {\n\t\t\tdataPriv.remove( elem, \"handle events\" );\n\t\t}\n\t},\n\n\tdispatch: function( nativeEvent ) {\n\n\t\tvar i, j, ret, matched, handleObj, handlerQueue,\n\t\t\targs = new Array( arguments.length ),\n\n\t\t\t// Make a writable jQuery.Event from the native event object\n\t\t\tevent = jQuery.event.fix( nativeEvent ),\n\n\t\t\thandlers = (\n\t\t\t\tdataPriv.get( this, \"events\" ) || Object.create( null )\n\t\t\t)[ event.type ] || [],\n\t\t\tspecial = jQuery.event.special[ event.type ] || {};\n\n\t\t// Use the fix-ed jQuery.Event rather than the (read-only) native event\n\t\targs[ 0 ] = event;\n\n\t\tfor ( i = 1; i < arguments.length; i++ ) {\n\t\t\targs[ i ] = arguments[ i ];\n\t\t}\n\n\t\tevent.delegateTarget = this;\n\n\t\t// Call the preDispatch hook for the mapped type, and let it bail if desired\n\t\tif ( special.preDispatch && special.preDispatch.call( this, event ) === false ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Determine handlers\n\t\thandlerQueue = jQuery.event.handlers.call( this, event, handlers );\n\n\t\t// Run delegates first; they may want to stop propagation beneath us\n\t\ti = 0;\n\t\twhile ( ( matched = handlerQueue[ i++ ] ) && !event.isPropagationStopped() ) {\n\t\t\tevent.currentTarget = matched.elem;\n\n\t\t\tj = 0;\n\t\t\twhile ( ( handleObj = matched.handlers[ j++ ] ) &&\n\t\t\t\t!event.isImmediatePropagationStopped() ) {\n\n\t\t\t\t// If the event is namespaced, then each handler is only invoked if it is\n\t\t\t\t// specially universal or its namespaces are a superset of the event's.\n\t\t\t\tif ( !event.rnamespace || handleObj.namespace === false ||\n\t\t\t\t\tevent.rnamespace.test( handleObj.namespace ) ) {\n\n\t\t\t\t\tevent.handleObj = handleObj;\n\t\t\t\t\tevent.data = handleObj.data;\n\n\t\t\t\t\tret = ( ( jQuery.event.special[ handleObj.origType ] || {} ).handle ||\n\t\t\t\t\t\thandleObj.handler ).apply( matched.elem, args );\n\n\t\t\t\t\tif ( ret !== undefined ) {\n\t\t\t\t\t\tif ( ( event.result = ret ) === false ) {\n\t\t\t\t\t\t\tevent.preventDefault();\n\t\t\t\t\t\t\tevent.stopPropagation();\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t// Call the postDispatch hook for the mapped type\n\t\tif ( special.postDispatch ) {\n\t\t\tspecial.postDispatch.call( this, event );\n\t\t}\n\n\t\treturn event.result;\n\t},\n\n\thandlers: function( event, handlers ) {\n\t\tvar i, handleObj, sel, matchedHandlers, matchedSelectors,\n\t\t\thandlerQueue = [],\n\t\t\tdelegateCount = handlers.delegateCount,\n\t\t\tcur = event.target;\n\n\t\t// Find delegate handlers\n\t\tif ( delegateCount &&\n\n\t\t\t// Support: IE <=9\n\t\t\t// Black-hole SVG instance trees (trac-13180)\n\t\t\tcur.nodeType &&\n\n\t\t\t// Support: Firefox <=42\n\t\t\t// Suppress spec-violating clicks indicating a non-primary pointer button (trac-3861)\n\t\t\t// https://www.w3.org/TR/DOM-Level-3-Events/#event-type-click\n\t\t\t// Support: IE 11 only\n\t\t\t// ...but not arrow key \"clicks\" of radio inputs, which can have `button` -1 (gh-2343)\n\t\t\t!( event.type === \"click\" && event.button >= 1 ) ) {\n\n\t\t\tfor ( ; cur !== this; cur = cur.parentNode || this ) {\n\n\t\t\t\t// Don't check non-elements (trac-13208)\n\t\t\t\t// Don't process clicks on disabled elements (trac-6911, trac-8165, trac-11382, trac-11764)\n\t\t\t\tif ( cur.nodeType === 1 && !( event.type === \"click\" && cur.disabled === true ) ) {\n\t\t\t\t\tmatchedHandlers = [];\n\t\t\t\t\tmatchedSelectors = {};\n\t\t\t\t\tfor ( i = 0; i < delegateCount; i++ ) {\n\t\t\t\t\t\thandleObj = handlers[ i ];\n\n\t\t\t\t\t\t// Don't conflict with Object.prototype properties (trac-13203)\n\t\t\t\t\t\tsel = handleObj.selector + \" \";\n\n\t\t\t\t\t\tif ( matchedSelectors[ sel ] === undefined ) {\n\t\t\t\t\t\t\tmatchedSelectors[ sel ] = handleObj.needsContext ?\n\t\t\t\t\t\t\t\tjQuery( sel, this ).index( cur ) > -1 :\n\t\t\t\t\t\t\t\tjQuery.find( sel, this, null, [ cur ] ).length;\n\t\t\t\t\t\t}\n\t\t\t\t\t\tif ( matchedSelectors[ sel ] ) {\n\t\t\t\t\t\t\tmatchedHandlers.push( handleObj );\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t\tif ( matchedHandlers.length ) {\n\t\t\t\t\t\thandlerQueue.push( { elem: cur, handlers: matchedHandlers } );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\t// Add the remaining (directly-bound) handlers\n\t\tcur = this;\n\t\tif ( delegateCount < handlers.length ) {\n\t\t\thandlerQueue.push( { elem: cur, handlers: handlers.slice( delegateCount ) } );\n\t\t}\n\n\t\treturn handlerQueue;\n\t},\n\n\taddProp: function( name, hook ) {\n\t\tObject.defineProperty( jQuery.Event.prototype, name, {\n\t\t\tenumerable: true,\n\t\t\tconfigurable: true,\n\n\t\t\tget: isFunction( hook ) ?\n\t\t\t\tfunction() {\n\t\t\t\t\tif ( this.originalEvent ) {\n\t\t\t\t\t\treturn hook( this.originalEvent );\n\t\t\t\t\t}\n\t\t\t\t} :\n\t\t\t\tfunction() {\n\t\t\t\t\tif ( this.originalEvent ) {\n\t\t\t\t\t\treturn this.originalEvent[ name ];\n\t\t\t\t\t}\n\t\t\t\t},\n\n\t\t\tset: function( value ) {\n\t\t\t\tObject.defineProperty( this, name, {\n\t\t\t\t\tenumerable: true,\n\t\t\t\t\tconfigurable: true,\n\t\t\t\t\twritable: true,\n\t\t\t\t\tvalue: value\n\t\t\t\t} );\n\t\t\t}\n\t\t} );\n\t},\n\n\tfix: function( originalEvent ) {\n\t\treturn originalEvent[ jQuery.expando ] ?\n\t\t\toriginalEvent :\n\t\t\tnew jQuery.Event( originalEvent );\n\t},\n\n\tspecial: {\n\t\tload: {\n\n\t\t\t// Prevent triggered image.load events from bubbling to window.load\n\t\t\tnoBubble: true\n\t\t},\n\t\tclick: {\n\n\t\t\t// Utilize native event to ensure correct state for checkable inputs\n\t\t\tsetup: function( data ) {\n\n\t\t\t\t// For mutual compressibility with _default, replace `this` access with a local var.\n\t\t\t\t// `|| data` is dead code meant only to preserve the variable through minification.\n\t\t\t\tvar el = this || data;\n\n\t\t\t\t// Claim the first handler\n\t\t\t\tif ( rcheckableType.test( el.type ) &&\n\t\t\t\t\tel.click && nodeName( el, \"input\" ) ) {\n\n\t\t\t\t\t// dataPriv.set( el, \"click\", ... )\n\t\t\t\t\tleverageNative( el, \"click\", true );\n\t\t\t\t}\n\n\t\t\t\t// Return false to allow normal processing in the caller\n\t\t\t\treturn false;\n\t\t\t},\n\t\t\ttrigger: function( data ) {\n\n\t\t\t\t// For mutual compressibility with _default, replace `this` access with a local var.\n\t\t\t\t// `|| data` is dead code meant only to preserve the variable through minification.\n\t\t\t\tvar el = this || data;\n\n\t\t\t\t// Force setup before triggering a click\n\t\t\t\tif ( rcheckableType.test( el.type ) &&\n\t\t\t\t\tel.click && nodeName( el, \"input\" ) ) {\n\n\t\t\t\t\tleverageNative( el, \"click\" );\n\t\t\t\t}\n\n\t\t\t\t// Return non-false to allow normal event-path propagation\n\t\t\t\treturn true;\n\t\t\t},\n\n\t\t\t// For cross-browser consistency, suppress native .click() on links\n\t\t\t// Also prevent it if we're currently inside a leveraged native-event stack\n\t\t\t_default: function( event ) {\n\t\t\t\tvar target = event.target;\n\t\t\t\treturn rcheckableType.test( target.type ) &&\n\t\t\t\t\ttarget.click && nodeName( target, \"input\" ) &&\n\t\t\t\t\tdataPriv.get( target, \"click\" ) ||\n\t\t\t\t\tnodeName( target, \"a\" );\n\t\t\t}\n\t\t},\n\n\t\tbeforeunload: {\n\t\t\tpostDispatch: function( event ) {\n\n\t\t\t\t// Support: Firefox 20+\n\t\t\t\t// Firefox doesn't alert if the returnValue field is not set.\n\t\t\t\tif ( event.result !== undefined && event.originalEvent ) {\n\t\t\t\t\tevent.originalEvent.returnValue = event.result;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n};\n\n// Ensure the presence of an event listener that handles manually-triggered\n// synthetic events by interrupting progress until reinvoked in response to\n// *native* events that it fires directly, ensuring that state changes have\n// already occurred before other listeners are invoked.\nfunction leverageNative( el, type, isSetup ) {\n\n\t// Missing `isSetup` indicates a trigger call, which must force setup through jQuery.event.add\n\tif ( !isSetup ) {\n\t\tif ( dataPriv.get( el, type ) === undefined ) {\n\t\t\tjQuery.event.add( el, type, returnTrue );\n\t\t}\n\t\treturn;\n\t}\n\n\t// Register the controller as a special universal handler for all event namespaces\n\tdataPriv.set( el, type, false );\n\tjQuery.event.add( el, type, {\n\t\tnamespace: false,\n\t\thandler: function( event ) {\n\t\t\tvar result,\n\t\t\t\tsaved = dataPriv.get( this, type );\n\n\t\t\tif ( ( event.isTrigger & 1 ) && this[ type ] ) {\n\n\t\t\t\t// Interrupt processing of the outer synthetic .trigger()ed event\n\t\t\t\tif ( !saved ) {\n\n\t\t\t\t\t// Store arguments for use when handling the inner native event\n\t\t\t\t\t// There will always be at least one argument (an event object), so this array\n\t\t\t\t\t// will not be confused with a leftover capture object.\n\t\t\t\t\tsaved = slice.call( arguments );\n\t\t\t\t\tdataPriv.set( this, type, saved );\n\n\t\t\t\t\t// Trigger the native event and capture its result\n\t\t\t\t\tthis[ type ]();\n\t\t\t\t\tresult = dataPriv.get( this, type );\n\t\t\t\t\tdataPriv.set( this, type, false );\n\n\t\t\t\t\tif ( saved !== result ) {\n\n\t\t\t\t\t\t// Cancel the outer synthetic event\n\t\t\t\t\t\tevent.stopImmediatePropagation();\n\t\t\t\t\t\tevent.preventDefault();\n\n\t\t\t\t\t\treturn result;\n\t\t\t\t\t}\n\n\t\t\t\t// If this is an inner synthetic event for an event with a bubbling surrogate\n\t\t\t\t// (focus or blur), assume that the surrogate already propagated from triggering\n\t\t\t\t// the native event and prevent that from happening again here.\n\t\t\t\t// This technically gets the ordering wrong w.r.t. to `.trigger()` (in which the\n\t\t\t\t// bubbling surrogate propagates *after* the non-bubbling base), but that seems\n\t\t\t\t// less bad than duplication.\n\t\t\t\t} else if ( ( jQuery.event.special[ type ] || {} ).delegateType ) {\n\t\t\t\t\tevent.stopPropagation();\n\t\t\t\t}\n\n\t\t\t// If this is a native event triggered above, everything is now in order\n\t\t\t// Fire an inner synthetic event with the original arguments\n\t\t\t} else if ( saved ) {\n\n\t\t\t\t// ...and capture the result\n\t\t\t\tdataPriv.set( this, type, jQuery.event.trigger(\n\t\t\t\t\tsaved[ 0 ],\n\t\t\t\t\tsaved.slice( 1 ),\n\t\t\t\t\tthis\n\t\t\t\t) );\n\n\t\t\t\t// Abort handling of the native event by all jQuery handlers while allowing\n\t\t\t\t// native handlers on the same element to run. On target, this is achieved\n\t\t\t\t// by stopping immediate propagation just on the jQuery event. However,\n\t\t\t\t// the native event is re-wrapped by a jQuery one on each level of the\n\t\t\t\t// propagation so the only way to stop it for jQuery is to stop it for\n\t\t\t\t// everyone via native `stopPropagation()`. This is not a problem for\n\t\t\t\t// focus/blur which don't bubble, but it does also stop click on checkboxes\n\t\t\t\t// and radios. We accept this limitation.\n\t\t\t\tevent.stopPropagation();\n\t\t\t\tevent.isImmediatePropagationStopped = returnTrue;\n\t\t\t}\n\t\t}\n\t} );\n}\n\njQuery.removeEvent = function( elem, type, handle ) {\n\n\t// This \"if\" is needed for plain objects\n\tif ( elem.removeEventListener ) {\n\t\telem.removeEventListener( type, handle );\n\t}\n};\n\njQuery.Event = function( src, props ) {\n\n\t// Allow instantiation without the 'new' keyword\n\tif ( !( this instanceof jQuery.Event ) ) {\n\t\treturn new jQuery.Event( src, props );\n\t}\n\n\t// Event object\n\tif ( src && src.type ) {\n\t\tthis.originalEvent = src;\n\t\tthis.type = src.type;\n\n\t\t// Events bubbling up the document may have been marked as prevented\n\t\t// by a handler lower down the tree; reflect the correct value.\n\t\tthis.isDefaultPrevented = src.defaultPrevented ||\n\t\t\t\tsrc.defaultPrevented === undefined &&\n\n\t\t\t\t// Support: Android <=2.3 only\n\t\t\t\tsrc.returnValue === false ?\n\t\t\treturnTrue :\n\t\t\treturnFalse;\n\n\t\t// Create target properties\n\t\t// Support: Safari <=6 - 7 only\n\t\t// Target should not be a text node (trac-504, trac-13143)\n\t\tthis.target = ( src.target && src.target.nodeType === 3 ) ?\n\t\t\tsrc.target.parentNode :\n\t\t\tsrc.target;\n\n\t\tthis.currentTarget = src.currentTarget;\n\t\tthis.relatedTarget = src.relatedTarget;\n\n\t// Event type\n\t} else {\n\t\tthis.type = src;\n\t}\n\n\t// Put explicitly provided properties onto the event object\n\tif ( props ) {\n\t\tjQuery.extend( this, props );\n\t}\n\n\t// Create a timestamp if incoming event doesn't have one\n\tthis.timeStamp = src && src.timeStamp || Date.now();\n\n\t// Mark it as fixed\n\tthis[ jQuery.expando ] = true;\n};\n\n// jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding\n// https://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html\njQuery.Event.prototype = {\n\tconstructor: jQuery.Event,\n\tisDefaultPrevented: returnFalse,\n\tisPropagationStopped: returnFalse,\n\tisImmediatePropagationStopped: returnFalse,\n\tisSimulated: false,\n\n\tpreventDefault: function() {\n\t\tvar e = this.originalEvent;\n\n\t\tthis.isDefaultPrevented = returnTrue;\n\n\t\tif ( e && !this.isSimulated ) {\n\t\t\te.preventDefault();\n\t\t}\n\t},\n\tstopPropagation: function() {\n\t\tvar e = this.originalEvent;\n\n\t\tthis.isPropagationStopped = returnTrue;\n\n\t\tif ( e && !this.isSimulated ) {\n\t\t\te.stopPropagation();\n\t\t}\n\t},\n\tstopImmediatePropagation: function() {\n\t\tvar e = this.originalEvent;\n\n\t\tthis.isImmediatePropagationStopped = returnTrue;\n\n\t\tif ( e && !this.isSimulated ) {\n\t\t\te.stopImmediatePropagation();\n\t\t}\n\n\t\tthis.stopPropagation();\n\t}\n};\n\n// Includes all common event props including KeyEvent and MouseEvent specific props\njQuery.each( {\n\taltKey: true,\n\tbubbles: true,\n\tcancelable: true,\n\tchangedTouches: true,\n\tctrlKey: true,\n\tdetail: true,\n\teventPhase: true,\n\tmetaKey: true,\n\tpageX: true,\n\tpageY: true,\n\tshiftKey: true,\n\tview: true,\n\t\"char\": true,\n\tcode: true,\n\tcharCode: true,\n\tkey: true,\n\tkeyCode: true,\n\tbutton: true,\n\tbuttons: true,\n\tclientX: true,\n\tclientY: true,\n\toffsetX: true,\n\toffsetY: true,\n\tpointerId: true,\n\tpointerType: true,\n\tscreenX: true,\n\tscreenY: true,\n\ttargetTouches: true,\n\ttoElement: true,\n\ttouches: true,\n\twhich: true\n}, jQuery.event.addProp );\n\njQuery.each( { focus: \"focusin\", blur: \"focusout\" }, function( type, delegateType ) {\n\n\tfunction focusMappedHandler( nativeEvent ) {\n\t\tif ( document.documentMode ) {\n\n\t\t\t// Support: IE 11+\n\t\t\t// Attach a single focusin/focusout handler on the document while someone wants\n\t\t\t// focus/blur. This is because the former are synchronous in IE while the latter\n\t\t\t// are async. In other browsers, all those handlers are invoked synchronously.\n\n\t\t\t// `handle` from private data would already wrap the event, but we need\n\t\t\t// to change the `type` here.\n\t\t\tvar handle = dataPriv.get( this, \"handle\" ),\n\t\t\t\tevent = jQuery.event.fix( nativeEvent );\n\t\t\tevent.type = nativeEvent.type === \"focusin\" ? \"focus\" : \"blur\";\n\t\t\tevent.isSimulated = true;\n\n\t\t\t// First, handle focusin/focusout\n\t\t\thandle( nativeEvent );\n\n\t\t\t// ...then, handle focus/blur\n\t\t\t//\n\t\t\t// focus/blur don't bubble while focusin/focusout do; simulate the former by only\n\t\t\t// invoking the handler at the lower level.\n\t\t\tif ( event.target === event.currentTarget ) {\n\n\t\t\t\t// The setup part calls `leverageNative`, which, in turn, calls\n\t\t\t\t// `jQuery.event.add`, so event handle will already have been set\n\t\t\t\t// by this point.\n\t\t\t\thandle( event );\n\t\t\t}\n\t\t} else {\n\n\t\t\t// For non-IE browsers, attach a single capturing handler on the document\n\t\t\t// while someone wants focusin/focusout.\n\t\t\tjQuery.event.simulate( delegateType, nativeEvent.target,\n\t\t\t\tjQuery.event.fix( nativeEvent ) );\n\t\t}\n\t}\n\n\tjQuery.event.special[ type ] = {\n\n\t\t// Utilize native event if possible so blur/focus sequence is correct\n\t\tsetup: function() {\n\n\t\t\tvar attaches;\n\n\t\t\t// Claim the first handler\n\t\t\t// dataPriv.set( this, \"focus\", ... )\n\t\t\t// dataPriv.set( this, \"blur\", ... )\n\t\t\tleverageNative( this, type, true );\n\n\t\t\tif ( document.documentMode ) {\n\n\t\t\t\t// Support: IE 9 - 11+\n\t\t\t\t// We use the same native handler for focusin & focus (and focusout & blur)\n\t\t\t\t// so we need to coordinate setup & teardown parts between those events.\n\t\t\t\t// Use `delegateType` as the key as `type` is already used by `leverageNative`.\n\t\t\t\tattaches = dataPriv.get( this, delegateType );\n\t\t\t\tif ( !attaches ) {\n\t\t\t\t\tthis.addEventListener( delegateType, focusMappedHandler );\n\t\t\t\t}\n\t\t\t\tdataPriv.set( this, delegateType, ( attaches || 0 ) + 1 );\n\t\t\t} else {\n\n\t\t\t\t// Return false to allow normal processing in the caller\n\t\t\t\treturn false;\n\t\t\t}\n\t\t},\n\t\ttrigger: function() {\n\n\t\t\t// Force setup before trigger\n\t\t\tleverageNative( this, type );\n\n\t\t\t// Return non-false to allow normal event-path propagation\n\t\t\treturn true;\n\t\t},\n\n\t\tteardown: function() {\n\t\t\tvar attaches;\n\n\t\t\tif ( document.documentMode ) {\n\t\t\t\tattaches = dataPriv.get( this, delegateType ) - 1;\n\t\t\t\tif ( !attaches ) {\n\t\t\t\t\tthis.removeEventListener( delegateType, focusMappedHandler );\n\t\t\t\t\tdataPriv.remove( this, delegateType );\n\t\t\t\t} else {\n\t\t\t\t\tdataPriv.set( this, delegateType, attaches );\n\t\t\t\t}\n\t\t\t} else {\n\n\t\t\t\t// Return false to indicate standard teardown should be applied\n\t\t\t\treturn false;\n\t\t\t}\n\t\t},\n\n\t\t// Suppress native focus or blur if we're currently inside\n\t\t// a leveraged native-event stack\n\t\t_default: function( event ) {\n\t\t\treturn dataPriv.get( event.target, type );\n\t\t},\n\n\t\tdelegateType: delegateType\n\t};\n\n\t// Support: Firefox <=44\n\t// Firefox doesn't have focus(in | out) events\n\t// Related ticket - https://bugzilla.mozilla.org/show_bug.cgi?id=687787\n\t//\n\t// Support: Chrome <=48 - 49, Safari <=9.0 - 9.1\n\t// focus(in | out) events fire after focus & blur events,\n\t// which is spec violation - http://www.w3.org/TR/DOM-Level-3-Events/#events-focusevent-event-order\n\t// Related ticket - https://bugs.chromium.org/p/chromium/issues/detail?id=449857\n\t//\n\t// Support: IE 9 - 11+\n\t// To preserve relative focusin/focus & focusout/blur event order guaranteed on the 3.x branch,\n\t// attach a single handler for both events in IE.\n\tjQuery.event.special[ delegateType ] = {\n\t\tsetup: function() {\n\n\t\t\t// Handle: regular nodes (via `this.ownerDocument`), window\n\t\t\t// (via `this.document`) & document (via `this`).\n\t\t\tvar doc = this.ownerDocument || this.document || this,\n\t\t\t\tdataHolder = document.documentMode ? this : doc,\n\t\t\t\tattaches = dataPriv.get( dataHolder, delegateType );\n\n\t\t\t// Support: IE 9 - 11+\n\t\t\t// We use the same native handler for focusin & focus (and focusout & blur)\n\t\t\t// so we need to coordinate setup & teardown parts between those events.\n\t\t\t// Use `delegateType` as the key as `type` is already used by `leverageNative`.\n\t\t\tif ( !attaches ) {\n\t\t\t\tif ( document.documentMode ) {\n\t\t\t\t\tthis.addEventListener( delegateType, focusMappedHandler );\n\t\t\t\t} else {\n\t\t\t\t\tdoc.addEventListener( type, focusMappedHandler, true );\n\t\t\t\t}\n\t\t\t}\n\t\t\tdataPriv.set( dataHolder, delegateType, ( attaches || 0 ) + 1 );\n\t\t},\n\t\tteardown: function() {\n\t\t\tvar doc = this.ownerDocument || this.document || this,\n\t\t\t\tdataHolder = document.documentMode ? this : doc,\n\t\t\t\tattaches = dataPriv.get( dataHolder, delegateType ) - 1;\n\n\t\t\tif ( !attaches ) {\n\t\t\t\tif ( document.documentMode ) {\n\t\t\t\t\tthis.removeEventListener( delegateType, focusMappedHandler );\n\t\t\t\t} else {\n\t\t\t\t\tdoc.removeEventListener( type, focusMappedHandler, true );\n\t\t\t\t}\n\t\t\t\tdataPriv.remove( dataHolder, delegateType );\n\t\t\t} else {\n\t\t\t\tdataPriv.set( dataHolder, delegateType, attaches );\n\t\t\t}\n\t\t}\n\t};\n} );\n\n// Create mouseenter/leave events using mouseover/out and event-time checks\n// so that event delegation works in jQuery.\n// Do the same for pointerenter/pointerleave and pointerover/pointerout\n//\n// Support: Safari 7 only\n// Safari sends mouseenter too often; see:\n// https://bugs.chromium.org/p/chromium/issues/detail?id=470258\n// for the description of the bug (it existed in older Chrome versions as well).\njQuery.each( {\n\tmouseenter: \"mouseover\",\n\tmouseleave: \"mouseout\",\n\tpointerenter: \"pointerover\",\n\tpointerleave: \"pointerout\"\n}, function( orig, fix ) {\n\tjQuery.event.special[ orig ] = {\n\t\tdelegateType: fix,\n\t\tbindType: fix,\n\n\t\thandle: function( event ) {\n\t\t\tvar ret,\n\t\t\t\ttarget = this,\n\t\t\t\trelated = event.relatedTarget,\n\t\t\t\thandleObj = event.handleObj;\n\n\t\t\t// For mouseenter/leave call the handler if related is outside the target.\n\t\t\t// NB: No relatedTarget if the mouse left/entered the browser window\n\t\t\tif ( !related || ( related !== target && !jQuery.contains( target, related ) ) ) {\n\t\t\t\tevent.type = handleObj.origType;\n\t\t\t\tret = handleObj.handler.apply( this, arguments );\n\t\t\t\tevent.type = fix;\n\t\t\t}\n\t\t\treturn ret;\n\t\t}\n\t};\n} );\n\njQuery.fn.extend( {\n\n\ton: function( types, selector, data, fn ) {\n\t\treturn on( this, types, selector, data, fn );\n\t},\n\tone: function( types, selector, data, fn ) {\n\t\treturn on( this, types, selector, data, fn, 1 );\n\t},\n\toff: function( types, selector, fn ) {\n\t\tvar handleObj, type;\n\t\tif ( types && types.preventDefault && types.handleObj ) {\n\n\t\t\t// ( event ) dispatched jQuery.Event\n\t\t\thandleObj = types.handleObj;\n\t\t\tjQuery( types.delegateTarget ).off(\n\t\t\t\thandleObj.namespace ?\n\t\t\t\t\thandleObj.origType + \".\" + handleObj.namespace :\n\t\t\t\t\thandleObj.origType,\n\t\t\t\thandleObj.selector,\n\t\t\t\thandleObj.handler\n\t\t\t);\n\t\t\treturn this;\n\t\t}\n\t\tif ( typeof types === \"object\" ) {\n\n\t\t\t// ( types-object [, selector] )\n\t\t\tfor ( type in types ) {\n\t\t\t\tthis.off( type, selector, types[ type ] );\n\t\t\t}\n\t\t\treturn this;\n\t\t}\n\t\tif ( selector === false || typeof selector === \"function\" ) {\n\n\t\t\t// ( types [, fn] )\n\t\t\tfn = selector;\n\t\t\tselector = undefined;\n\t\t}\n\t\tif ( fn === false ) {\n\t\t\tfn = returnFalse;\n\t\t}\n\t\treturn this.each( function() {\n\t\t\tjQuery.event.remove( this, types, fn, selector );\n\t\t} );\n\t}\n} );\n\n\nvar\n\n\t// Support: IE <=10 - 11, Edge 12 - 13 only\n\t// In IE/Edge using regex groups here causes severe slowdowns.\n\t// See https://connect.microsoft.com/IE/feedback/details/1736512/\n\trnoInnerhtml = /\\s*$/g;\n\n// Prefer a tbody over its parent table for containing new rows\nfunction manipulationTarget( elem, content ) {\n\tif ( nodeName( elem, \"table\" ) &&\n\t\tnodeName( content.nodeType !== 11 ? content : content.firstChild, \"tr\" ) ) {\n\n\t\treturn jQuery( elem ).children( \"tbody\" )[ 0 ] || elem;\n\t}\n\n\treturn elem;\n}\n\n// Replace/restore the type attribute of script elements for safe DOM manipulation\nfunction disableScript( elem ) {\n\telem.type = ( elem.getAttribute( \"type\" ) !== null ) + \"/\" + elem.type;\n\treturn elem;\n}\nfunction restoreScript( elem ) {\n\tif ( ( elem.type || \"\" ).slice( 0, 5 ) === \"true/\" ) {\n\t\telem.type = elem.type.slice( 5 );\n\t} else {\n\t\telem.removeAttribute( \"type\" );\n\t}\n\n\treturn elem;\n}\n\nfunction cloneCopyEvent( src, dest ) {\n\tvar i, l, type, pdataOld, udataOld, udataCur, events;\n\n\tif ( dest.nodeType !== 1 ) {\n\t\treturn;\n\t}\n\n\t// 1. Copy private data: events, handlers, etc.\n\tif ( dataPriv.hasData( src ) ) {\n\t\tpdataOld = dataPriv.get( src );\n\t\tevents = pdataOld.events;\n\n\t\tif ( events ) {\n\t\t\tdataPriv.remove( dest, \"handle events\" );\n\n\t\t\tfor ( type in events ) {\n\t\t\t\tfor ( i = 0, l = events[ type ].length; i < l; i++ ) {\n\t\t\t\t\tjQuery.event.add( dest, type, events[ type ][ i ] );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\t// 2. Copy user data\n\tif ( dataUser.hasData( src ) ) {\n\t\tudataOld = dataUser.access( src );\n\t\tudataCur = jQuery.extend( {}, udataOld );\n\n\t\tdataUser.set( dest, udataCur );\n\t}\n}\n\n// Fix IE bugs, see support tests\nfunction fixInput( src, dest ) {\n\tvar nodeName = dest.nodeName.toLowerCase();\n\n\t// Fails to persist the checked state of a cloned checkbox or radio button.\n\tif ( nodeName === \"input\" && rcheckableType.test( src.type ) ) {\n\t\tdest.checked = src.checked;\n\n\t// Fails to return the selected option to the default selected state when cloning options\n\t} else if ( nodeName === \"input\" || nodeName === \"textarea\" ) {\n\t\tdest.defaultValue = src.defaultValue;\n\t}\n}\n\nfunction domManip( collection, args, callback, ignored ) {\n\n\t// Flatten any nested arrays\n\targs = flat( args );\n\n\tvar fragment, first, scripts, hasScripts, node, doc,\n\t\ti = 0,\n\t\tl = collection.length,\n\t\tiNoClone = l - 1,\n\t\tvalue = args[ 0 ],\n\t\tvalueIsFunction = isFunction( value );\n\n\t// We can't cloneNode fragments that contain checked, in WebKit\n\tif ( valueIsFunction ||\n\t\t\t( l > 1 && typeof value === \"string\" &&\n\t\t\t\t!support.checkClone && rchecked.test( value ) ) ) {\n\t\treturn collection.each( function( index ) {\n\t\t\tvar self = collection.eq( index );\n\t\t\tif ( valueIsFunction ) {\n\t\t\t\targs[ 0 ] = value.call( this, index, self.html() );\n\t\t\t}\n\t\t\tdomManip( self, args, callback, ignored );\n\t\t} );\n\t}\n\n\tif ( l ) {\n\t\tfragment = buildFragment( args, collection[ 0 ].ownerDocument, false, collection, ignored );\n\t\tfirst = fragment.firstChild;\n\n\t\tif ( fragment.childNodes.length === 1 ) {\n\t\t\tfragment = first;\n\t\t}\n\n\t\t// Require either new content or an interest in ignored elements to invoke the callback\n\t\tif ( first || ignored ) {\n\t\t\tscripts = jQuery.map( getAll( fragment, \"script\" ), disableScript );\n\t\t\thasScripts = scripts.length;\n\n\t\t\t// Use the original fragment for the last item\n\t\t\t// instead of the first because it can end up\n\t\t\t// being emptied incorrectly in certain situations (trac-8070).\n\t\t\tfor ( ; i < l; i++ ) {\n\t\t\t\tnode = fragment;\n\n\t\t\t\tif ( i !== iNoClone ) {\n\t\t\t\t\tnode = jQuery.clone( node, true, true );\n\n\t\t\t\t\t// Keep references to cloned scripts for later restoration\n\t\t\t\t\tif ( hasScripts ) {\n\n\t\t\t\t\t\t// Support: Android <=4.0 only, PhantomJS 1 only\n\t\t\t\t\t\t// push.apply(_, arraylike) throws on ancient WebKit\n\t\t\t\t\t\tjQuery.merge( scripts, getAll( node, \"script\" ) );\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\tcallback.call( collection[ i ], node, i );\n\t\t\t}\n\n\t\t\tif ( hasScripts ) {\n\t\t\t\tdoc = scripts[ scripts.length - 1 ].ownerDocument;\n\n\t\t\t\t// Re-enable scripts\n\t\t\t\tjQuery.map( scripts, restoreScript );\n\n\t\t\t\t// Evaluate executable scripts on first document insertion\n\t\t\t\tfor ( i = 0; i < hasScripts; i++ ) {\n\t\t\t\t\tnode = scripts[ i ];\n\t\t\t\t\tif ( rscriptType.test( node.type || \"\" ) &&\n\t\t\t\t\t\t!dataPriv.access( node, \"globalEval\" ) &&\n\t\t\t\t\t\tjQuery.contains( doc, node ) ) {\n\n\t\t\t\t\t\tif ( node.src && ( node.type || \"\" ).toLowerCase() !== \"module\" ) {\n\n\t\t\t\t\t\t\t// Optional AJAX dependency, but won't run scripts if not present\n\t\t\t\t\t\t\tif ( jQuery._evalUrl && !node.noModule ) {\n\t\t\t\t\t\t\t\tjQuery._evalUrl( node.src, {\n\t\t\t\t\t\t\t\t\tnonce: node.nonce || node.getAttribute( \"nonce\" )\n\t\t\t\t\t\t\t\t}, doc );\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t// Unwrap a CDATA section containing script contents. This shouldn't be\n\t\t\t\t\t\t\t// needed as in XML documents they're already not visible when\n\t\t\t\t\t\t\t// inspecting element contents and in HTML documents they have no\n\t\t\t\t\t\t\t// meaning but we're preserving that logic for backwards compatibility.\n\t\t\t\t\t\t\t// This will be removed completely in 4.0. See gh-4904.\n\t\t\t\t\t\t\tDOMEval( node.textContent.replace( rcleanScript, \"\" ), node, doc );\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\treturn collection;\n}\n\nfunction remove( elem, selector, keepData ) {\n\tvar node,\n\t\tnodes = selector ? jQuery.filter( selector, elem ) : elem,\n\t\ti = 0;\n\n\tfor ( ; ( node = nodes[ i ] ) != null; i++ ) {\n\t\tif ( !keepData && node.nodeType === 1 ) {\n\t\t\tjQuery.cleanData( getAll( node ) );\n\t\t}\n\n\t\tif ( node.parentNode ) {\n\t\t\tif ( keepData && isAttached( node ) ) {\n\t\t\t\tsetGlobalEval( getAll( node, \"script\" ) );\n\t\t\t}\n\t\t\tnode.parentNode.removeChild( node );\n\t\t}\n\t}\n\n\treturn elem;\n}\n\njQuery.extend( {\n\thtmlPrefilter: function( html ) {\n\t\treturn html;\n\t},\n\n\tclone: function( elem, dataAndEvents, deepDataAndEvents ) {\n\t\tvar i, l, srcElements, destElements,\n\t\t\tclone = elem.cloneNode( true ),\n\t\t\tinPage = isAttached( elem );\n\n\t\t// Fix IE cloning issues\n\t\tif ( !support.noCloneChecked && ( elem.nodeType === 1 || elem.nodeType === 11 ) &&\n\t\t\t\t!jQuery.isXMLDoc( elem ) ) {\n\n\t\t\t// We eschew jQuery#find here for performance reasons:\n\t\t\t// https://jsperf.com/getall-vs-sizzle/2\n\t\t\tdestElements = getAll( clone );\n\t\t\tsrcElements = getAll( elem );\n\n\t\t\tfor ( i = 0, l = srcElements.length; i < l; i++ ) {\n\t\t\t\tfixInput( srcElements[ i ], destElements[ i ] );\n\t\t\t}\n\t\t}\n\n\t\t// Copy the events from the original to the clone\n\t\tif ( dataAndEvents ) {\n\t\t\tif ( deepDataAndEvents ) {\n\t\t\t\tsrcElements = srcElements || getAll( elem );\n\t\t\t\tdestElements = destElements || getAll( clone );\n\n\t\t\t\tfor ( i = 0, l = srcElements.length; i < l; i++ ) {\n\t\t\t\t\tcloneCopyEvent( srcElements[ i ], destElements[ i ] );\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\tcloneCopyEvent( elem, clone );\n\t\t\t}\n\t\t}\n\n\t\t// Preserve script evaluation history\n\t\tdestElements = getAll( clone, \"script\" );\n\t\tif ( destElements.length > 0 ) {\n\t\t\tsetGlobalEval( destElements, !inPage && getAll( elem, \"script\" ) );\n\t\t}\n\n\t\t// Return the cloned set\n\t\treturn clone;\n\t},\n\n\tcleanData: function( elems ) {\n\t\tvar data, elem, type,\n\t\t\tspecial = jQuery.event.special,\n\t\t\ti = 0;\n\n\t\tfor ( ; ( elem = elems[ i ] ) !== undefined; i++ ) {\n\t\t\tif ( acceptData( elem ) ) {\n\t\t\t\tif ( ( data = elem[ dataPriv.expando ] ) ) {\n\t\t\t\t\tif ( data.events ) {\n\t\t\t\t\t\tfor ( type in data.events ) {\n\t\t\t\t\t\t\tif ( special[ type ] ) {\n\t\t\t\t\t\t\t\tjQuery.event.remove( elem, type );\n\n\t\t\t\t\t\t\t// This is a shortcut to avoid jQuery.event.remove's overhead\n\t\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\t\tjQuery.removeEvent( elem, type, data.handle );\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\t// Support: Chrome <=35 - 45+\n\t\t\t\t\t// Assign undefined instead of using delete, see Data#remove\n\t\t\t\t\telem[ dataPriv.expando ] = undefined;\n\t\t\t\t}\n\t\t\t\tif ( elem[ dataUser.expando ] ) {\n\n\t\t\t\t\t// Support: Chrome <=35 - 45+\n\t\t\t\t\t// Assign undefined instead of using delete, see Data#remove\n\t\t\t\t\telem[ dataUser.expando ] = undefined;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n} );\n\njQuery.fn.extend( {\n\tdetach: function( selector ) {\n\t\treturn remove( this, selector, true );\n\t},\n\n\tremove: function( selector ) {\n\t\treturn remove( this, selector );\n\t},\n\n\ttext: function( value ) {\n\t\treturn access( this, function( value ) {\n\t\t\treturn value === undefined ?\n\t\t\t\tjQuery.text( this ) :\n\t\t\t\tthis.empty().each( function() {\n\t\t\t\t\tif ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {\n\t\t\t\t\t\tthis.textContent = value;\n\t\t\t\t\t}\n\t\t\t\t} );\n\t\t}, null, value, arguments.length );\n\t},\n\n\tappend: function() {\n\t\treturn domManip( this, arguments, function( elem ) {\n\t\t\tif ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {\n\t\t\t\tvar target = manipulationTarget( this, elem );\n\t\t\t\ttarget.appendChild( elem );\n\t\t\t}\n\t\t} );\n\t},\n\n\tprepend: function() {\n\t\treturn domManip( this, arguments, function( elem ) {\n\t\t\tif ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {\n\t\t\t\tvar target = manipulationTarget( this, elem );\n\t\t\t\ttarget.insertBefore( elem, target.firstChild );\n\t\t\t}\n\t\t} );\n\t},\n\n\tbefore: function() {\n\t\treturn domManip( this, arguments, function( elem ) {\n\t\t\tif ( this.parentNode ) {\n\t\t\t\tthis.parentNode.insertBefore( elem, this );\n\t\t\t}\n\t\t} );\n\t},\n\n\tafter: function() {\n\t\treturn domManip( this, arguments, function( elem ) {\n\t\t\tif ( this.parentNode ) {\n\t\t\t\tthis.parentNode.insertBefore( elem, this.nextSibling );\n\t\t\t}\n\t\t} );\n\t},\n\n\tempty: function() {\n\t\tvar elem,\n\t\t\ti = 0;\n\n\t\tfor ( ; ( elem = this[ i ] ) != null; i++ ) {\n\t\t\tif ( elem.nodeType === 1 ) {\n\n\t\t\t\t// Prevent memory leaks\n\t\t\t\tjQuery.cleanData( getAll( elem, false ) );\n\n\t\t\t\t// Remove any remaining nodes\n\t\t\t\telem.textContent = \"\";\n\t\t\t}\n\t\t}\n\n\t\treturn this;\n\t},\n\n\tclone: function( dataAndEvents, deepDataAndEvents ) {\n\t\tdataAndEvents = dataAndEvents == null ? false : dataAndEvents;\n\t\tdeepDataAndEvents = deepDataAndEvents == null ? dataAndEvents : deepDataAndEvents;\n\n\t\treturn this.map( function() {\n\t\t\treturn jQuery.clone( this, dataAndEvents, deepDataAndEvents );\n\t\t} );\n\t},\n\n\thtml: function( value ) {\n\t\treturn access( this, function( value ) {\n\t\t\tvar elem = this[ 0 ] || {},\n\t\t\t\ti = 0,\n\t\t\t\tl = this.length;\n\n\t\t\tif ( value === undefined && elem.nodeType === 1 ) {\n\t\t\t\treturn elem.innerHTML;\n\t\t\t}\n\n\t\t\t// See if we can take a shortcut and just use innerHTML\n\t\t\tif ( typeof value === \"string\" && !rnoInnerhtml.test( value ) &&\n\t\t\t\t!wrapMap[ ( rtagName.exec( value ) || [ \"\", \"\" ] )[ 1 ].toLowerCase() ] ) {\n\n\t\t\t\tvalue = jQuery.htmlPrefilter( value );\n\n\t\t\t\ttry {\n\t\t\t\t\tfor ( ; i < l; i++ ) {\n\t\t\t\t\t\telem = this[ i ] || {};\n\n\t\t\t\t\t\t// Remove element nodes and prevent memory leaks\n\t\t\t\t\t\tif ( elem.nodeType === 1 ) {\n\t\t\t\t\t\t\tjQuery.cleanData( getAll( elem, false ) );\n\t\t\t\t\t\t\telem.innerHTML = value;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\telem = 0;\n\n\t\t\t\t// If using innerHTML throws an exception, use the fallback method\n\t\t\t\t} catch ( e ) {}\n\t\t\t}\n\n\t\t\tif ( elem ) {\n\t\t\t\tthis.empty().append( value );\n\t\t\t}\n\t\t}, null, value, arguments.length );\n\t},\n\n\treplaceWith: function() {\n\t\tvar ignored = [];\n\n\t\t// Make the changes, replacing each non-ignored context element with the new content\n\t\treturn domManip( this, arguments, function( elem ) {\n\t\t\tvar parent = this.parentNode;\n\n\t\t\tif ( jQuery.inArray( this, ignored ) < 0 ) {\n\t\t\t\tjQuery.cleanData( getAll( this ) );\n\t\t\t\tif ( parent ) {\n\t\t\t\t\tparent.replaceChild( elem, this );\n\t\t\t\t}\n\t\t\t}\n\n\t\t// Force callback invocation\n\t\t}, ignored );\n\t}\n} );\n\njQuery.each( {\n\tappendTo: \"append\",\n\tprependTo: \"prepend\",\n\tinsertBefore: \"before\",\n\tinsertAfter: \"after\",\n\treplaceAll: \"replaceWith\"\n}, function( name, original ) {\n\tjQuery.fn[ name ] = function( selector ) {\n\t\tvar elems,\n\t\t\tret = [],\n\t\t\tinsert = jQuery( selector ),\n\t\t\tlast = insert.length - 1,\n\t\t\ti = 0;\n\n\t\tfor ( ; i <= last; i++ ) {\n\t\t\telems = i === last ? this : this.clone( true );\n\t\t\tjQuery( insert[ i ] )[ original ]( elems );\n\n\t\t\t// Support: Android <=4.0 only, PhantomJS 1 only\n\t\t\t// .get() because push.apply(_, arraylike) throws on ancient WebKit\n\t\t\tpush.apply( ret, elems.get() );\n\t\t}\n\n\t\treturn this.pushStack( ret );\n\t};\n} );\nvar rnumnonpx = new RegExp( \"^(\" + pnum + \")(?!px)[a-z%]+$\", \"i\" );\n\nvar rcustomProp = /^--/;\n\n\nvar getStyles = function( elem ) {\n\n\t\t// Support: IE <=11 only, Firefox <=30 (trac-15098, trac-14150)\n\t\t// IE throws on elements created in popups\n\t\t// FF meanwhile throws on frame elements through \"defaultView.getComputedStyle\"\n\t\tvar view = elem.ownerDocument.defaultView;\n\n\t\tif ( !view || !view.opener ) {\n\t\t\tview = window;\n\t\t}\n\n\t\treturn view.getComputedStyle( elem );\n\t};\n\nvar swap = function( elem, options, callback ) {\n\tvar ret, name,\n\t\told = {};\n\n\t// Remember the old values, and insert the new ones\n\tfor ( name in options ) {\n\t\told[ name ] = elem.style[ name ];\n\t\telem.style[ name ] = options[ name ];\n\t}\n\n\tret = callback.call( elem );\n\n\t// Revert the old values\n\tfor ( name in options ) {\n\t\telem.style[ name ] = old[ name ];\n\t}\n\n\treturn ret;\n};\n\n\nvar rboxStyle = new RegExp( cssExpand.join( \"|\" ), \"i\" );\n\n\n\n( function() {\n\n\t// Executing both pixelPosition & boxSizingReliable tests require only one layout\n\t// so they're executed at the same time to save the second computation.\n\tfunction computeStyleTests() {\n\n\t\t// This is a singleton, we need to execute it only once\n\t\tif ( !div ) {\n\t\t\treturn;\n\t\t}\n\n\t\tcontainer.style.cssText = \"position:absolute;left:-11111px;width:60px;\" +\n\t\t\t\"margin-top:1px;padding:0;border:0\";\n\t\tdiv.style.cssText =\n\t\t\t\"position:relative;display:block;box-sizing:border-box;overflow:scroll;\" +\n\t\t\t\"margin:auto;border:1px;padding:1px;\" +\n\t\t\t\"width:60%;top:1%\";\n\t\tdocumentElement.appendChild( container ).appendChild( div );\n\n\t\tvar divStyle = window.getComputedStyle( div );\n\t\tpixelPositionVal = divStyle.top !== \"1%\";\n\n\t\t// Support: Android 4.0 - 4.3 only, Firefox <=3 - 44\n\t\treliableMarginLeftVal = roundPixelMeasures( divStyle.marginLeft ) === 12;\n\n\t\t// Support: Android 4.0 - 4.3 only, Safari <=9.1 - 10.1, iOS <=7.0 - 9.3\n\t\t// Some styles come back with percentage values, even though they shouldn't\n\t\tdiv.style.right = \"60%\";\n\t\tpixelBoxStylesVal = roundPixelMeasures( divStyle.right ) === 36;\n\n\t\t// Support: IE 9 - 11 only\n\t\t// Detect misreporting of content dimensions for box-sizing:border-box elements\n\t\tboxSizingReliableVal = roundPixelMeasures( divStyle.width ) === 36;\n\n\t\t// Support: IE 9 only\n\t\t// Detect overflow:scroll screwiness (gh-3699)\n\t\t// Support: Chrome <=64\n\t\t// Don't get tricked when zoom affects offsetWidth (gh-4029)\n\t\tdiv.style.position = \"absolute\";\n\t\tscrollboxSizeVal = roundPixelMeasures( div.offsetWidth / 3 ) === 12;\n\n\t\tdocumentElement.removeChild( container );\n\n\t\t// Nullify the div so it wouldn't be stored in the memory and\n\t\t// it will also be a sign that checks already performed\n\t\tdiv = null;\n\t}\n\n\tfunction roundPixelMeasures( measure ) {\n\t\treturn Math.round( parseFloat( measure ) );\n\t}\n\n\tvar pixelPositionVal, boxSizingReliableVal, scrollboxSizeVal, pixelBoxStylesVal,\n\t\treliableTrDimensionsVal, reliableMarginLeftVal,\n\t\tcontainer = document.createElement( \"div\" ),\n\t\tdiv = document.createElement( \"div\" );\n\n\t// Finish early in limited (non-browser) environments\n\tif ( !div.style ) {\n\t\treturn;\n\t}\n\n\t// Support: IE <=9 - 11 only\n\t// Style of cloned element affects source element cloned (trac-8908)\n\tdiv.style.backgroundClip = \"content-box\";\n\tdiv.cloneNode( true ).style.backgroundClip = \"\";\n\tsupport.clearCloneStyle = div.style.backgroundClip === \"content-box\";\n\n\tjQuery.extend( support, {\n\t\tboxSizingReliable: function() {\n\t\t\tcomputeStyleTests();\n\t\t\treturn boxSizingReliableVal;\n\t\t},\n\t\tpixelBoxStyles: function() {\n\t\t\tcomputeStyleTests();\n\t\t\treturn pixelBoxStylesVal;\n\t\t},\n\t\tpixelPosition: function() {\n\t\t\tcomputeStyleTests();\n\t\t\treturn pixelPositionVal;\n\t\t},\n\t\treliableMarginLeft: function() {\n\t\t\tcomputeStyleTests();\n\t\t\treturn reliableMarginLeftVal;\n\t\t},\n\t\tscrollboxSize: function() {\n\t\t\tcomputeStyleTests();\n\t\t\treturn scrollboxSizeVal;\n\t\t},\n\n\t\t// Support: IE 9 - 11+, Edge 15 - 18+\n\t\t// IE/Edge misreport `getComputedStyle` of table rows with width/height\n\t\t// set in CSS while `offset*` properties report correct values.\n\t\t// Behavior in IE 9 is more subtle than in newer versions & it passes\n\t\t// some versions of this test; make sure not to make it pass there!\n\t\t//\n\t\t// Support: Firefox 70+\n\t\t// Only Firefox includes border widths\n\t\t// in computed dimensions. (gh-4529)\n\t\treliableTrDimensions: function() {\n\t\t\tvar table, tr, trChild, trStyle;\n\t\t\tif ( reliableTrDimensionsVal == null ) {\n\t\t\t\ttable = document.createElement( \"table\" );\n\t\t\t\ttr = document.createElement( \"tr\" );\n\t\t\t\ttrChild = document.createElement( \"div\" );\n\n\t\t\t\ttable.style.cssText = \"position:absolute;left:-11111px;border-collapse:separate\";\n\t\t\t\ttr.style.cssText = \"box-sizing:content-box;border:1px solid\";\n\n\t\t\t\t// Support: Chrome 86+\n\t\t\t\t// Height set through cssText does not get applied.\n\t\t\t\t// Computed height then comes back as 0.\n\t\t\t\ttr.style.height = \"1px\";\n\t\t\t\ttrChild.style.height = \"9px\";\n\n\t\t\t\t// Support: Android 8 Chrome 86+\n\t\t\t\t// In our bodyBackground.html iframe,\n\t\t\t\t// display for all div elements is set to \"inline\",\n\t\t\t\t// which causes a problem only in Android 8 Chrome 86.\n\t\t\t\t// Ensuring the div is `display: block`\n\t\t\t\t// gets around this issue.\n\t\t\t\ttrChild.style.display = \"block\";\n\n\t\t\t\tdocumentElement\n\t\t\t\t\t.appendChild( table )\n\t\t\t\t\t.appendChild( tr )\n\t\t\t\t\t.appendChild( trChild );\n\n\t\t\t\ttrStyle = window.getComputedStyle( tr );\n\t\t\t\treliableTrDimensionsVal = ( parseInt( trStyle.height, 10 ) +\n\t\t\t\t\tparseInt( trStyle.borderTopWidth, 10 ) +\n\t\t\t\t\tparseInt( trStyle.borderBottomWidth, 10 ) ) === tr.offsetHeight;\n\n\t\t\t\tdocumentElement.removeChild( table );\n\t\t\t}\n\t\t\treturn reliableTrDimensionsVal;\n\t\t}\n\t} );\n} )();\n\n\nfunction curCSS( elem, name, computed ) {\n\tvar width, minWidth, maxWidth, ret,\n\t\tisCustomProp = rcustomProp.test( name ),\n\n\t\t// Support: Firefox 51+\n\t\t// Retrieving style before computed somehow\n\t\t// fixes an issue with getting wrong values\n\t\t// on detached elements\n\t\tstyle = elem.style;\n\n\tcomputed = computed || getStyles( elem );\n\n\t// getPropertyValue is needed for:\n\t// .css('filter') (IE 9 only, trac-12537)\n\t// .css('--customProperty) (gh-3144)\n\tif ( computed ) {\n\n\t\t// Support: IE <=9 - 11+\n\t\t// IE only supports `\"float\"` in `getPropertyValue`; in computed styles\n\t\t// it's only available as `\"cssFloat\"`. We no longer modify properties\n\t\t// sent to `.css()` apart from camelCasing, so we need to check both.\n\t\t// Normally, this would create difference in behavior: if\n\t\t// `getPropertyValue` returns an empty string, the value returned\n\t\t// by `.css()` would be `undefined`. This is usually the case for\n\t\t// disconnected elements. However, in IE even disconnected elements\n\t\t// with no styles return `\"none\"` for `getPropertyValue( \"float\" )`\n\t\tret = computed.getPropertyValue( name ) || computed[ name ];\n\n\t\tif ( isCustomProp && ret ) {\n\n\t\t\t// Support: Firefox 105+, Chrome <=105+\n\t\t\t// Spec requires trimming whitespace for custom properties (gh-4926).\n\t\t\t// Firefox only trims leading whitespace. Chrome just collapses\n\t\t\t// both leading & trailing whitespace to a single space.\n\t\t\t//\n\t\t\t// Fall back to `undefined` if empty string returned.\n\t\t\t// This collapses a missing definition with property defined\n\t\t\t// and set to an empty string but there's no standard API\n\t\t\t// allowing us to differentiate them without a performance penalty\n\t\t\t// and returning `undefined` aligns with older jQuery.\n\t\t\t//\n\t\t\t// rtrimCSS treats U+000D CARRIAGE RETURN and U+000C FORM FEED\n\t\t\t// as whitespace while CSS does not, but this is not a problem\n\t\t\t// because CSS preprocessing replaces them with U+000A LINE FEED\n\t\t\t// (which *is* CSS whitespace)\n\t\t\t// https://www.w3.org/TR/css-syntax-3/#input-preprocessing\n\t\t\tret = ret.replace( rtrimCSS, \"$1\" ) || undefined;\n\t\t}\n\n\t\tif ( ret === \"\" && !isAttached( elem ) ) {\n\t\t\tret = jQuery.style( elem, name );\n\t\t}\n\n\t\t// A tribute to the \"awesome hack by Dean Edwards\"\n\t\t// Android Browser returns percentage for some values,\n\t\t// but width seems to be reliably pixels.\n\t\t// This is against the CSSOM draft spec:\n\t\t// https://drafts.csswg.org/cssom/#resolved-values\n\t\tif ( !support.pixelBoxStyles() && rnumnonpx.test( ret ) && rboxStyle.test( name ) ) {\n\n\t\t\t// Remember the original values\n\t\t\twidth = style.width;\n\t\t\tminWidth = style.minWidth;\n\t\t\tmaxWidth = style.maxWidth;\n\n\t\t\t// Put in the new values to get a computed value out\n\t\t\tstyle.minWidth = style.maxWidth = style.width = ret;\n\t\t\tret = computed.width;\n\n\t\t\t// Revert the changed values\n\t\t\tstyle.width = width;\n\t\t\tstyle.minWidth = minWidth;\n\t\t\tstyle.maxWidth = maxWidth;\n\t\t}\n\t}\n\n\treturn ret !== undefined ?\n\n\t\t// Support: IE <=9 - 11 only\n\t\t// IE returns zIndex value as an integer.\n\t\tret + \"\" :\n\t\tret;\n}\n\n\nfunction addGetHookIf( conditionFn, hookFn ) {\n\n\t// Define the hook, we'll check on the first run if it's really needed.\n\treturn {\n\t\tget: function() {\n\t\t\tif ( conditionFn() ) {\n\n\t\t\t\t// Hook not needed (or it's not possible to use it due\n\t\t\t\t// to missing dependency), remove it.\n\t\t\t\tdelete this.get;\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// Hook needed; redefine it so that the support test is not executed again.\n\t\t\treturn ( this.get = hookFn ).apply( this, arguments );\n\t\t}\n\t};\n}\n\n\nvar cssPrefixes = [ \"Webkit\", \"Moz\", \"ms\" ],\n\temptyStyle = document.createElement( \"div\" ).style,\n\tvendorProps = {};\n\n// Return a vendor-prefixed property or undefined\nfunction vendorPropName( name ) {\n\n\t// Check for vendor prefixed names\n\tvar capName = name[ 0 ].toUpperCase() + name.slice( 1 ),\n\t\ti = cssPrefixes.length;\n\n\twhile ( i-- ) {\n\t\tname = cssPrefixes[ i ] + capName;\n\t\tif ( name in emptyStyle ) {\n\t\t\treturn name;\n\t\t}\n\t}\n}\n\n// Return a potentially-mapped jQuery.cssProps or vendor prefixed property\nfunction finalPropName( name ) {\n\tvar final = jQuery.cssProps[ name ] || vendorProps[ name ];\n\n\tif ( final ) {\n\t\treturn final;\n\t}\n\tif ( name in emptyStyle ) {\n\t\treturn name;\n\t}\n\treturn vendorProps[ name ] = vendorPropName( name ) || name;\n}\n\n\nvar\n\n\t// Swappable if display is none or starts with table\n\t// except \"table\", \"table-cell\", or \"table-caption\"\n\t// See here for display values: https://developer.mozilla.org/en-US/docs/CSS/display\n\trdisplayswap = /^(none|table(?!-c[ea]).+)/,\n\tcssShow = { position: \"absolute\", visibility: \"hidden\", display: \"block\" },\n\tcssNormalTransform = {\n\t\tletterSpacing: \"0\",\n\t\tfontWeight: \"400\"\n\t};\n\nfunction setPositiveNumber( _elem, value, subtract ) {\n\n\t// Any relative (+/-) values have already been\n\t// normalized at this point\n\tvar matches = rcssNum.exec( value );\n\treturn matches ?\n\n\t\t// Guard against undefined \"subtract\", e.g., when used as in cssHooks\n\t\tMath.max( 0, matches[ 2 ] - ( subtract || 0 ) ) + ( matches[ 3 ] || \"px\" ) :\n\t\tvalue;\n}\n\nfunction boxModelAdjustment( elem, dimension, box, isBorderBox, styles, computedVal ) {\n\tvar i = dimension === \"width\" ? 1 : 0,\n\t\textra = 0,\n\t\tdelta = 0,\n\t\tmarginDelta = 0;\n\n\t// Adjustment may not be necessary\n\tif ( box === ( isBorderBox ? \"border\" : \"content\" ) ) {\n\t\treturn 0;\n\t}\n\n\tfor ( ; i < 4; i += 2 ) {\n\n\t\t// Both box models exclude margin\n\t\t// Count margin delta separately to only add it after scroll gutter adjustment.\n\t\t// This is needed to make negative margins work with `outerHeight( true )` (gh-3982).\n\t\tif ( box === \"margin\" ) {\n\t\t\tmarginDelta += jQuery.css( elem, box + cssExpand[ i ], true, styles );\n\t\t}\n\n\t\t// If we get here with a content-box, we're seeking \"padding\" or \"border\" or \"margin\"\n\t\tif ( !isBorderBox ) {\n\n\t\t\t// Add padding\n\t\t\tdelta += jQuery.css( elem, \"padding\" + cssExpand[ i ], true, styles );\n\n\t\t\t// For \"border\" or \"margin\", add border\n\t\t\tif ( box !== \"padding\" ) {\n\t\t\t\tdelta += jQuery.css( elem, \"border\" + cssExpand[ i ] + \"Width\", true, styles );\n\n\t\t\t// But still keep track of it otherwise\n\t\t\t} else {\n\t\t\t\textra += jQuery.css( elem, \"border\" + cssExpand[ i ] + \"Width\", true, styles );\n\t\t\t}\n\n\t\t// If we get here with a border-box (content + padding + border), we're seeking \"content\" or\n\t\t// \"padding\" or \"margin\"\n\t\t} else {\n\n\t\t\t// For \"content\", subtract padding\n\t\t\tif ( box === \"content\" ) {\n\t\t\t\tdelta -= jQuery.css( elem, \"padding\" + cssExpand[ i ], true, styles );\n\t\t\t}\n\n\t\t\t// For \"content\" or \"padding\", subtract border\n\t\t\tif ( box !== \"margin\" ) {\n\t\t\t\tdelta -= jQuery.css( elem, \"border\" + cssExpand[ i ] + \"Width\", true, styles );\n\t\t\t}\n\t\t}\n\t}\n\n\t// Account for positive content-box scroll gutter when requested by providing computedVal\n\tif ( !isBorderBox && computedVal >= 0 ) {\n\n\t\t// offsetWidth/offsetHeight is a rounded sum of content, padding, scroll gutter, and border\n\t\t// Assuming integer scroll gutter, subtract the rest and round down\n\t\tdelta += Math.max( 0, Math.ceil(\n\t\t\telem[ \"offset\" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ) ] -\n\t\t\tcomputedVal -\n\t\t\tdelta -\n\t\t\textra -\n\t\t\t0.5\n\n\t\t// If offsetWidth/offsetHeight is unknown, then we can't determine content-box scroll gutter\n\t\t// Use an explicit zero to avoid NaN (gh-3964)\n\t\t) ) || 0;\n\t}\n\n\treturn delta + marginDelta;\n}\n\nfunction getWidthOrHeight( elem, dimension, extra ) {\n\n\t// Start with computed style\n\tvar styles = getStyles( elem ),\n\n\t\t// To avoid forcing a reflow, only fetch boxSizing if we need it (gh-4322).\n\t\t// Fake content-box until we know it's needed to know the true value.\n\t\tboxSizingNeeded = !support.boxSizingReliable() || extra,\n\t\tisBorderBox = boxSizingNeeded &&\n\t\t\tjQuery.css( elem, \"boxSizing\", false, styles ) === \"border-box\",\n\t\tvalueIsBorderBox = isBorderBox,\n\n\t\tval = curCSS( elem, dimension, styles ),\n\t\toffsetProp = \"offset\" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 );\n\n\t// Support: Firefox <=54\n\t// Return a confounding non-pixel value or feign ignorance, as appropriate.\n\tif ( rnumnonpx.test( val ) ) {\n\t\tif ( !extra ) {\n\t\t\treturn val;\n\t\t}\n\t\tval = \"auto\";\n\t}\n\n\n\t// Support: IE 9 - 11 only\n\t// Use offsetWidth/offsetHeight for when box sizing is unreliable.\n\t// In those cases, the computed value can be trusted to be border-box.\n\tif ( ( !support.boxSizingReliable() && isBorderBox ||\n\n\t\t// Support: IE 10 - 11+, Edge 15 - 18+\n\t\t// IE/Edge misreport `getComputedStyle` of table rows with width/height\n\t\t// set in CSS while `offset*` properties report correct values.\n\t\t// Interestingly, in some cases IE 9 doesn't suffer from this issue.\n\t\t!support.reliableTrDimensions() && nodeName( elem, \"tr\" ) ||\n\n\t\t// Fall back to offsetWidth/offsetHeight when value is \"auto\"\n\t\t// This happens for inline elements with no explicit setting (gh-3571)\n\t\tval === \"auto\" ||\n\n\t\t// Support: Android <=4.1 - 4.3 only\n\t\t// Also use offsetWidth/offsetHeight for misreported inline dimensions (gh-3602)\n\t\t!parseFloat( val ) && jQuery.css( elem, \"display\", false, styles ) === \"inline\" ) &&\n\n\t\t// Make sure the element is visible & connected\n\t\telem.getClientRects().length ) {\n\n\t\tisBorderBox = jQuery.css( elem, \"boxSizing\", false, styles ) === \"border-box\";\n\n\t\t// Where available, offsetWidth/offsetHeight approximate border box dimensions.\n\t\t// Where not available (e.g., SVG), assume unreliable box-sizing and interpret the\n\t\t// retrieved value as a content box dimension.\n\t\tvalueIsBorderBox = offsetProp in elem;\n\t\tif ( valueIsBorderBox ) {\n\t\t\tval = elem[ offsetProp ];\n\t\t}\n\t}\n\n\t// Normalize \"\" and auto\n\tval = parseFloat( val ) || 0;\n\n\t// Adjust for the element's box model\n\treturn ( val +\n\t\tboxModelAdjustment(\n\t\t\telem,\n\t\t\tdimension,\n\t\t\textra || ( isBorderBox ? \"border\" : \"content\" ),\n\t\t\tvalueIsBorderBox,\n\t\t\tstyles,\n\n\t\t\t// Provide the current computed size to request scroll gutter calculation (gh-3589)\n\t\t\tval\n\t\t)\n\t) + \"px\";\n}\n\njQuery.extend( {\n\n\t// Add in style property hooks for overriding the default\n\t// behavior of getting and setting a style property\n\tcssHooks: {\n\t\topacity: {\n\t\t\tget: function( elem, computed ) {\n\t\t\t\tif ( computed ) {\n\n\t\t\t\t\t// We should always get a number back from opacity\n\t\t\t\t\tvar ret = curCSS( elem, \"opacity\" );\n\t\t\t\t\treturn ret === \"\" ? \"1\" : ret;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t},\n\n\t// Don't automatically add \"px\" to these possibly-unitless properties\n\tcssNumber: {\n\t\tanimationIterationCount: true,\n\t\taspectRatio: true,\n\t\tborderImageSlice: true,\n\t\tcolumnCount: true,\n\t\tflexGrow: true,\n\t\tflexShrink: true,\n\t\tfontWeight: true,\n\t\tgridArea: true,\n\t\tgridColumn: true,\n\t\tgridColumnEnd: true,\n\t\tgridColumnStart: true,\n\t\tgridRow: true,\n\t\tgridRowEnd: true,\n\t\tgridRowStart: true,\n\t\tlineHeight: true,\n\t\topacity: true,\n\t\torder: true,\n\t\torphans: true,\n\t\tscale: true,\n\t\twidows: true,\n\t\tzIndex: true,\n\t\tzoom: true,\n\n\t\t// SVG-related\n\t\tfillOpacity: true,\n\t\tfloodOpacity: true,\n\t\tstopOpacity: true,\n\t\tstrokeMiterlimit: true,\n\t\tstrokeOpacity: true\n\t},\n\n\t// Add in properties whose names you wish to fix before\n\t// setting or getting the value\n\tcssProps: {},\n\n\t// Get and set the style property on a DOM Node\n\tstyle: function( elem, name, value, extra ) {\n\n\t\t// Don't set styles on text and comment nodes\n\t\tif ( !elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Make sure that we're working with the right name\n\t\tvar ret, type, hooks,\n\t\t\torigName = camelCase( name ),\n\t\t\tisCustomProp = rcustomProp.test( name ),\n\t\t\tstyle = elem.style;\n\n\t\t// Make sure that we're working with the right name. We don't\n\t\t// want to query the value if it is a CSS custom property\n\t\t// since they are user-defined.\n\t\tif ( !isCustomProp ) {\n\t\t\tname = finalPropName( origName );\n\t\t}\n\n\t\t// Gets hook for the prefixed version, then unprefixed version\n\t\thooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ];\n\n\t\t// Check if we're setting a value\n\t\tif ( value !== undefined ) {\n\t\t\ttype = typeof value;\n\n\t\t\t// Convert \"+=\" or \"-=\" to relative numbers (trac-7345)\n\t\t\tif ( type === \"string\" && ( ret = rcssNum.exec( value ) ) && ret[ 1 ] ) {\n\t\t\t\tvalue = adjustCSS( elem, name, ret );\n\n\t\t\t\t// Fixes bug trac-9237\n\t\t\t\ttype = \"number\";\n\t\t\t}\n\n\t\t\t// Make sure that null and NaN values aren't set (trac-7116)\n\t\t\tif ( value == null || value !== value ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// If a number was passed in, add the unit (except for certain CSS properties)\n\t\t\t// The isCustomProp check can be removed in jQuery 4.0 when we only auto-append\n\t\t\t// \"px\" to a few hardcoded values.\n\t\t\tif ( type === \"number\" && !isCustomProp ) {\n\t\t\t\tvalue += ret && ret[ 3 ] || ( jQuery.cssNumber[ origName ] ? \"\" : \"px\" );\n\t\t\t}\n\n\t\t\t// background-* props affect original clone's values\n\t\t\tif ( !support.clearCloneStyle && value === \"\" && name.indexOf( \"background\" ) === 0 ) {\n\t\t\t\tstyle[ name ] = \"inherit\";\n\t\t\t}\n\n\t\t\t// If a hook was provided, use that value, otherwise just set the specified value\n\t\t\tif ( !hooks || !( \"set\" in hooks ) ||\n\t\t\t\t( value = hooks.set( elem, value, extra ) ) !== undefined ) {\n\n\t\t\t\tif ( isCustomProp ) {\n\t\t\t\t\tstyle.setProperty( name, value );\n\t\t\t\t} else {\n\t\t\t\t\tstyle[ name ] = value;\n\t\t\t\t}\n\t\t\t}\n\n\t\t} else {\n\n\t\t\t// If a hook was provided get the non-computed value from there\n\t\t\tif ( hooks && \"get\" in hooks &&\n\t\t\t\t( ret = hooks.get( elem, false, extra ) ) !== undefined ) {\n\n\t\t\t\treturn ret;\n\t\t\t}\n\n\t\t\t// Otherwise just get the value from the style object\n\t\t\treturn style[ name ];\n\t\t}\n\t},\n\n\tcss: function( elem, name, extra, styles ) {\n\t\tvar val, num, hooks,\n\t\t\torigName = camelCase( name ),\n\t\t\tisCustomProp = rcustomProp.test( name );\n\n\t\t// Make sure that we're working with the right name. We don't\n\t\t// want to modify the value if it is a CSS custom property\n\t\t// since they are user-defined.\n\t\tif ( !isCustomProp ) {\n\t\t\tname = finalPropName( origName );\n\t\t}\n\n\t\t// Try prefixed name followed by the unprefixed name\n\t\thooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ];\n\n\t\t// If a hook was provided get the computed value from there\n\t\tif ( hooks && \"get\" in hooks ) {\n\t\t\tval = hooks.get( elem, true, extra );\n\t\t}\n\n\t\t// Otherwise, if a way to get the computed value exists, use that\n\t\tif ( val === undefined ) {\n\t\t\tval = curCSS( elem, name, styles );\n\t\t}\n\n\t\t// Convert \"normal\" to computed value\n\t\tif ( val === \"normal\" && name in cssNormalTransform ) {\n\t\t\tval = cssNormalTransform[ name ];\n\t\t}\n\n\t\t// Make numeric if forced or a qualifier was provided and val looks numeric\n\t\tif ( extra === \"\" || extra ) {\n\t\t\tnum = parseFloat( val );\n\t\t\treturn extra === true || isFinite( num ) ? num || 0 : val;\n\t\t}\n\n\t\treturn val;\n\t}\n} );\n\njQuery.each( [ \"height\", \"width\" ], function( _i, dimension ) {\n\tjQuery.cssHooks[ dimension ] = {\n\t\tget: function( elem, computed, extra ) {\n\t\t\tif ( computed ) {\n\n\t\t\t\t// Certain elements can have dimension info if we invisibly show them\n\t\t\t\t// but it must have a current display style that would benefit\n\t\t\t\treturn rdisplayswap.test( jQuery.css( elem, \"display\" ) ) &&\n\n\t\t\t\t\t// Support: Safari 8+\n\t\t\t\t\t// Table columns in Safari have non-zero offsetWidth & zero\n\t\t\t\t\t// getBoundingClientRect().width unless display is changed.\n\t\t\t\t\t// Support: IE <=11 only\n\t\t\t\t\t// Running getBoundingClientRect on a disconnected node\n\t\t\t\t\t// in IE throws an error.\n\t\t\t\t\t( !elem.getClientRects().length || !elem.getBoundingClientRect().width ) ?\n\t\t\t\t\tswap( elem, cssShow, function() {\n\t\t\t\t\t\treturn getWidthOrHeight( elem, dimension, extra );\n\t\t\t\t\t} ) :\n\t\t\t\t\tgetWidthOrHeight( elem, dimension, extra );\n\t\t\t}\n\t\t},\n\n\t\tset: function( elem, value, extra ) {\n\t\t\tvar matches,\n\t\t\t\tstyles = getStyles( elem ),\n\n\t\t\t\t// Only read styles.position if the test has a chance to fail\n\t\t\t\t// to avoid forcing a reflow.\n\t\t\t\tscrollboxSizeBuggy = !support.scrollboxSize() &&\n\t\t\t\t\tstyles.position === \"absolute\",\n\n\t\t\t\t// To avoid forcing a reflow, only fetch boxSizing if we need it (gh-3991)\n\t\t\t\tboxSizingNeeded = scrollboxSizeBuggy || extra,\n\t\t\t\tisBorderBox = boxSizingNeeded &&\n\t\t\t\t\tjQuery.css( elem, \"boxSizing\", false, styles ) === \"border-box\",\n\t\t\t\tsubtract = extra ?\n\t\t\t\t\tboxModelAdjustment(\n\t\t\t\t\t\telem,\n\t\t\t\t\t\tdimension,\n\t\t\t\t\t\textra,\n\t\t\t\t\t\tisBorderBox,\n\t\t\t\t\t\tstyles\n\t\t\t\t\t) :\n\t\t\t\t\t0;\n\n\t\t\t// Account for unreliable border-box dimensions by comparing offset* to computed and\n\t\t\t// faking a content-box to get border and padding (gh-3699)\n\t\t\tif ( isBorderBox && scrollboxSizeBuggy ) {\n\t\t\t\tsubtract -= Math.ceil(\n\t\t\t\t\telem[ \"offset\" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ) ] -\n\t\t\t\t\tparseFloat( styles[ dimension ] ) -\n\t\t\t\t\tboxModelAdjustment( elem, dimension, \"border\", false, styles ) -\n\t\t\t\t\t0.5\n\t\t\t\t);\n\t\t\t}\n\n\t\t\t// Convert to pixels if value adjustment is needed\n\t\t\tif ( subtract && ( matches = rcssNum.exec( value ) ) &&\n\t\t\t\t( matches[ 3 ] || \"px\" ) !== \"px\" ) {\n\n\t\t\t\telem.style[ dimension ] = value;\n\t\t\t\tvalue = jQuery.css( elem, dimension );\n\t\t\t}\n\n\t\t\treturn setPositiveNumber( elem, value, subtract );\n\t\t}\n\t};\n} );\n\njQuery.cssHooks.marginLeft = addGetHookIf( support.reliableMarginLeft,\n\tfunction( elem, computed ) {\n\t\tif ( computed ) {\n\t\t\treturn ( parseFloat( curCSS( elem, \"marginLeft\" ) ) ||\n\t\t\t\telem.getBoundingClientRect().left -\n\t\t\t\t\tswap( elem, { marginLeft: 0 }, function() {\n\t\t\t\t\t\treturn elem.getBoundingClientRect().left;\n\t\t\t\t\t} )\n\t\t\t) + \"px\";\n\t\t}\n\t}\n);\n\n// These hooks are used by animate to expand properties\njQuery.each( {\n\tmargin: \"\",\n\tpadding: \"\",\n\tborder: \"Width\"\n}, function( prefix, suffix ) {\n\tjQuery.cssHooks[ prefix + suffix ] = {\n\t\texpand: function( value ) {\n\t\t\tvar i = 0,\n\t\t\t\texpanded = {},\n\n\t\t\t\t// Assumes a single number if not a string\n\t\t\t\tparts = typeof value === \"string\" ? value.split( \" \" ) : [ value ];\n\n\t\t\tfor ( ; i < 4; i++ ) {\n\t\t\t\texpanded[ prefix + cssExpand[ i ] + suffix ] =\n\t\t\t\t\tparts[ i ] || parts[ i - 2 ] || parts[ 0 ];\n\t\t\t}\n\n\t\t\treturn expanded;\n\t\t}\n\t};\n\n\tif ( prefix !== \"margin\" ) {\n\t\tjQuery.cssHooks[ prefix + suffix ].set = setPositiveNumber;\n\t}\n} );\n\njQuery.fn.extend( {\n\tcss: function( name, value ) {\n\t\treturn access( this, function( elem, name, value ) {\n\t\t\tvar styles, len,\n\t\t\t\tmap = {},\n\t\t\t\ti = 0;\n\n\t\t\tif ( Array.isArray( name ) ) {\n\t\t\t\tstyles = getStyles( elem );\n\t\t\t\tlen = name.length;\n\n\t\t\t\tfor ( ; i < len; i++ ) {\n\t\t\t\t\tmap[ name[ i ] ] = jQuery.css( elem, name[ i ], false, styles );\n\t\t\t\t}\n\n\t\t\t\treturn map;\n\t\t\t}\n\n\t\t\treturn value !== undefined ?\n\t\t\t\tjQuery.style( elem, name, value ) :\n\t\t\t\tjQuery.css( elem, name );\n\t\t}, name, value, arguments.length > 1 );\n\t}\n} );\n\n\nfunction Tween( elem, options, prop, end, easing ) {\n\treturn new Tween.prototype.init( elem, options, prop, end, easing );\n}\njQuery.Tween = Tween;\n\nTween.prototype = {\n\tconstructor: Tween,\n\tinit: function( elem, options, prop, end, easing, unit ) {\n\t\tthis.elem = elem;\n\t\tthis.prop = prop;\n\t\tthis.easing = easing || jQuery.easing._default;\n\t\tthis.options = options;\n\t\tthis.start = this.now = this.cur();\n\t\tthis.end = end;\n\t\tthis.unit = unit || ( jQuery.cssNumber[ prop ] ? \"\" : \"px\" );\n\t},\n\tcur: function() {\n\t\tvar hooks = Tween.propHooks[ this.prop ];\n\n\t\treturn hooks && hooks.get ?\n\t\t\thooks.get( this ) :\n\t\t\tTween.propHooks._default.get( this );\n\t},\n\trun: function( percent ) {\n\t\tvar eased,\n\t\t\thooks = Tween.propHooks[ this.prop ];\n\n\t\tif ( this.options.duration ) {\n\t\t\tthis.pos = eased = jQuery.easing[ this.easing ](\n\t\t\t\tpercent, this.options.duration * percent, 0, 1, this.options.duration\n\t\t\t);\n\t\t} else {\n\t\t\tthis.pos = eased = percent;\n\t\t}\n\t\tthis.now = ( this.end - this.start ) * eased + this.start;\n\n\t\tif ( this.options.step ) {\n\t\t\tthis.options.step.call( this.elem, this.now, this );\n\t\t}\n\n\t\tif ( hooks && hooks.set ) {\n\t\t\thooks.set( this );\n\t\t} else {\n\t\t\tTween.propHooks._default.set( this );\n\t\t}\n\t\treturn this;\n\t}\n};\n\nTween.prototype.init.prototype = Tween.prototype;\n\nTween.propHooks = {\n\t_default: {\n\t\tget: function( tween ) {\n\t\t\tvar result;\n\n\t\t\t// Use a property on the element directly when it is not a DOM element,\n\t\t\t// or when there is no matching style property that exists.\n\t\t\tif ( tween.elem.nodeType !== 1 ||\n\t\t\t\ttween.elem[ tween.prop ] != null && tween.elem.style[ tween.prop ] == null ) {\n\t\t\t\treturn tween.elem[ tween.prop ];\n\t\t\t}\n\n\t\t\t// Passing an empty string as a 3rd parameter to .css will automatically\n\t\t\t// attempt a parseFloat and fallback to a string if the parse fails.\n\t\t\t// Simple values such as \"10px\" are parsed to Float;\n\t\t\t// complex values such as \"rotate(1rad)\" are returned as-is.\n\t\t\tresult = jQuery.css( tween.elem, tween.prop, \"\" );\n\n\t\t\t// Empty strings, null, undefined and \"auto\" are converted to 0.\n\t\t\treturn !result || result === \"auto\" ? 0 : result;\n\t\t},\n\t\tset: function( tween ) {\n\n\t\t\t// Use step hook for back compat.\n\t\t\t// Use cssHook if its there.\n\t\t\t// Use .style if available and use plain properties where available.\n\t\t\tif ( jQuery.fx.step[ tween.prop ] ) {\n\t\t\t\tjQuery.fx.step[ tween.prop ]( tween );\n\t\t\t} else if ( tween.elem.nodeType === 1 && (\n\t\t\t\tjQuery.cssHooks[ tween.prop ] ||\n\t\t\t\t\ttween.elem.style[ finalPropName( tween.prop ) ] != null ) ) {\n\t\t\t\tjQuery.style( tween.elem, tween.prop, tween.now + tween.unit );\n\t\t\t} else {\n\t\t\t\ttween.elem[ tween.prop ] = tween.now;\n\t\t\t}\n\t\t}\n\t}\n};\n\n// Support: IE <=9 only\n// Panic based approach to setting things on disconnected nodes\nTween.propHooks.scrollTop = Tween.propHooks.scrollLeft = {\n\tset: function( tween ) {\n\t\tif ( tween.elem.nodeType && tween.elem.parentNode ) {\n\t\t\ttween.elem[ tween.prop ] = tween.now;\n\t\t}\n\t}\n};\n\njQuery.easing = {\n\tlinear: function( p ) {\n\t\treturn p;\n\t},\n\tswing: function( p ) {\n\t\treturn 0.5 - Math.cos( p * Math.PI ) / 2;\n\t},\n\t_default: \"swing\"\n};\n\njQuery.fx = Tween.prototype.init;\n\n// Back compat <1.8 extension point\njQuery.fx.step = {};\n\n\n\n\nvar\n\tfxNow, inProgress,\n\trfxtypes = /^(?:toggle|show|hide)$/,\n\trrun = /queueHooks$/;\n\nfunction schedule() {\n\tif ( inProgress ) {\n\t\tif ( document.hidden === false && window.requestAnimationFrame ) {\n\t\t\twindow.requestAnimationFrame( schedule );\n\t\t} else {\n\t\t\twindow.setTimeout( schedule, jQuery.fx.interval );\n\t\t}\n\n\t\tjQuery.fx.tick();\n\t}\n}\n\n// Animations created synchronously will run synchronously\nfunction createFxNow() {\n\twindow.setTimeout( function() {\n\t\tfxNow = undefined;\n\t} );\n\treturn ( fxNow = Date.now() );\n}\n\n// Generate parameters to create a standard animation\nfunction genFx( type, includeWidth ) {\n\tvar which,\n\t\ti = 0,\n\t\tattrs = { height: type };\n\n\t// If we include width, step value is 1 to do all cssExpand values,\n\t// otherwise step value is 2 to skip over Left and Right\n\tincludeWidth = includeWidth ? 1 : 0;\n\tfor ( ; i < 4; i += 2 - includeWidth ) {\n\t\twhich = cssExpand[ i ];\n\t\tattrs[ \"margin\" + which ] = attrs[ \"padding\" + which ] = type;\n\t}\n\n\tif ( includeWidth ) {\n\t\tattrs.opacity = attrs.width = type;\n\t}\n\n\treturn attrs;\n}\n\nfunction createTween( value, prop, animation ) {\n\tvar tween,\n\t\tcollection = ( Animation.tweeners[ prop ] || [] ).concat( Animation.tweeners[ \"*\" ] ),\n\t\tindex = 0,\n\t\tlength = collection.length;\n\tfor ( ; index < length; index++ ) {\n\t\tif ( ( tween = collection[ index ].call( animation, prop, value ) ) ) {\n\n\t\t\t// We're done with this property\n\t\t\treturn tween;\n\t\t}\n\t}\n}\n\nfunction defaultPrefilter( elem, props, opts ) {\n\tvar prop, value, toggle, hooks, oldfire, propTween, restoreDisplay, display,\n\t\tisBox = \"width\" in props || \"height\" in props,\n\t\tanim = this,\n\t\torig = {},\n\t\tstyle = elem.style,\n\t\thidden = elem.nodeType && isHiddenWithinTree( elem ),\n\t\tdataShow = dataPriv.get( elem, \"fxshow\" );\n\n\t// Queue-skipping animations hijack the fx hooks\n\tif ( !opts.queue ) {\n\t\thooks = jQuery._queueHooks( elem, \"fx\" );\n\t\tif ( hooks.unqueued == null ) {\n\t\t\thooks.unqueued = 0;\n\t\t\toldfire = hooks.empty.fire;\n\t\t\thooks.empty.fire = function() {\n\t\t\t\tif ( !hooks.unqueued ) {\n\t\t\t\t\toldfire();\n\t\t\t\t}\n\t\t\t};\n\t\t}\n\t\thooks.unqueued++;\n\n\t\tanim.always( function() {\n\n\t\t\t// Ensure the complete handler is called before this completes\n\t\t\tanim.always( function() {\n\t\t\t\thooks.unqueued--;\n\t\t\t\tif ( !jQuery.queue( elem, \"fx\" ).length ) {\n\t\t\t\t\thooks.empty.fire();\n\t\t\t\t}\n\t\t\t} );\n\t\t} );\n\t}\n\n\t// Detect show/hide animations\n\tfor ( prop in props ) {\n\t\tvalue = props[ prop ];\n\t\tif ( rfxtypes.test( value ) ) {\n\t\t\tdelete props[ prop ];\n\t\t\ttoggle = toggle || value === \"toggle\";\n\t\t\tif ( value === ( hidden ? \"hide\" : \"show\" ) ) {\n\n\t\t\t\t// Pretend to be hidden if this is a \"show\" and\n\t\t\t\t// there is still data from a stopped show/hide\n\t\t\t\tif ( value === \"show\" && dataShow && dataShow[ prop ] !== undefined ) {\n\t\t\t\t\thidden = true;\n\n\t\t\t\t// Ignore all other no-op show/hide data\n\t\t\t\t} else {\n\t\t\t\t\tcontinue;\n\t\t\t\t}\n\t\t\t}\n\t\t\torig[ prop ] = dataShow && dataShow[ prop ] || jQuery.style( elem, prop );\n\t\t}\n\t}\n\n\t// Bail out if this is a no-op like .hide().hide()\n\tpropTween = !jQuery.isEmptyObject( props );\n\tif ( !propTween && jQuery.isEmptyObject( orig ) ) {\n\t\treturn;\n\t}\n\n\t// Restrict \"overflow\" and \"display\" styles during box animations\n\tif ( isBox && elem.nodeType === 1 ) {\n\n\t\t// Support: IE <=9 - 11, Edge 12 - 15\n\t\t// Record all 3 overflow attributes because IE does not infer the shorthand\n\t\t// from identically-valued overflowX and overflowY and Edge just mirrors\n\t\t// the overflowX value there.\n\t\topts.overflow = [ style.overflow, style.overflowX, style.overflowY ];\n\n\t\t// Identify a display type, preferring old show/hide data over the CSS cascade\n\t\trestoreDisplay = dataShow && dataShow.display;\n\t\tif ( restoreDisplay == null ) {\n\t\t\trestoreDisplay = dataPriv.get( elem, \"display\" );\n\t\t}\n\t\tdisplay = jQuery.css( elem, \"display\" );\n\t\tif ( display === \"none\" ) {\n\t\t\tif ( restoreDisplay ) {\n\t\t\t\tdisplay = restoreDisplay;\n\t\t\t} else {\n\n\t\t\t\t// Get nonempty value(s) by temporarily forcing visibility\n\t\t\t\tshowHide( [ elem ], true );\n\t\t\t\trestoreDisplay = elem.style.display || restoreDisplay;\n\t\t\t\tdisplay = jQuery.css( elem, \"display\" );\n\t\t\t\tshowHide( [ elem ] );\n\t\t\t}\n\t\t}\n\n\t\t// Animate inline elements as inline-block\n\t\tif ( display === \"inline\" || display === \"inline-block\" && restoreDisplay != null ) {\n\t\t\tif ( jQuery.css( elem, \"float\" ) === \"none\" ) {\n\n\t\t\t\t// Restore the original display value at the end of pure show/hide animations\n\t\t\t\tif ( !propTween ) {\n\t\t\t\t\tanim.done( function() {\n\t\t\t\t\t\tstyle.display = restoreDisplay;\n\t\t\t\t\t} );\n\t\t\t\t\tif ( restoreDisplay == null ) {\n\t\t\t\t\t\tdisplay = style.display;\n\t\t\t\t\t\trestoreDisplay = display === \"none\" ? \"\" : display;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\tstyle.display = \"inline-block\";\n\t\t\t}\n\t\t}\n\t}\n\n\tif ( opts.overflow ) {\n\t\tstyle.overflow = \"hidden\";\n\t\tanim.always( function() {\n\t\t\tstyle.overflow = opts.overflow[ 0 ];\n\t\t\tstyle.overflowX = opts.overflow[ 1 ];\n\t\t\tstyle.overflowY = opts.overflow[ 2 ];\n\t\t} );\n\t}\n\n\t// Implement show/hide animations\n\tpropTween = false;\n\tfor ( prop in orig ) {\n\n\t\t// General show/hide setup for this element animation\n\t\tif ( !propTween ) {\n\t\t\tif ( dataShow ) {\n\t\t\t\tif ( \"hidden\" in dataShow ) {\n\t\t\t\t\thidden = dataShow.hidden;\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\tdataShow = dataPriv.access( elem, \"fxshow\", { display: restoreDisplay } );\n\t\t\t}\n\n\t\t\t// Store hidden/visible for toggle so `.stop().toggle()` \"reverses\"\n\t\t\tif ( toggle ) {\n\t\t\t\tdataShow.hidden = !hidden;\n\t\t\t}\n\n\t\t\t// Show elements before animating them\n\t\t\tif ( hidden ) {\n\t\t\t\tshowHide( [ elem ], true );\n\t\t\t}\n\n\t\t\t/* eslint-disable no-loop-func */\n\n\t\t\tanim.done( function() {\n\n\t\t\t\t/* eslint-enable no-loop-func */\n\n\t\t\t\t// The final step of a \"hide\" animation is actually hiding the element\n\t\t\t\tif ( !hidden ) {\n\t\t\t\t\tshowHide( [ elem ] );\n\t\t\t\t}\n\t\t\t\tdataPriv.remove( elem, \"fxshow\" );\n\t\t\t\tfor ( prop in orig ) {\n\t\t\t\t\tjQuery.style( elem, prop, orig[ prop ] );\n\t\t\t\t}\n\t\t\t} );\n\t\t}\n\n\t\t// Per-property setup\n\t\tpropTween = createTween( hidden ? dataShow[ prop ] : 0, prop, anim );\n\t\tif ( !( prop in dataShow ) ) {\n\t\t\tdataShow[ prop ] = propTween.start;\n\t\t\tif ( hidden ) {\n\t\t\t\tpropTween.end = propTween.start;\n\t\t\t\tpropTween.start = 0;\n\t\t\t}\n\t\t}\n\t}\n}\n\nfunction propFilter( props, specialEasing ) {\n\tvar index, name, easing, value, hooks;\n\n\t// camelCase, specialEasing and expand cssHook pass\n\tfor ( index in props ) {\n\t\tname = camelCase( index );\n\t\teasing = specialEasing[ name ];\n\t\tvalue = props[ index ];\n\t\tif ( Array.isArray( value ) ) {\n\t\t\teasing = value[ 1 ];\n\t\t\tvalue = props[ index ] = value[ 0 ];\n\t\t}\n\n\t\tif ( index !== name ) {\n\t\t\tprops[ name ] = value;\n\t\t\tdelete props[ index ];\n\t\t}\n\n\t\thooks = jQuery.cssHooks[ name ];\n\t\tif ( hooks && \"expand\" in hooks ) {\n\t\t\tvalue = hooks.expand( value );\n\t\t\tdelete props[ name ];\n\n\t\t\t// Not quite $.extend, this won't overwrite existing keys.\n\t\t\t// Reusing 'index' because we have the correct \"name\"\n\t\t\tfor ( index in value ) {\n\t\t\t\tif ( !( index in props ) ) {\n\t\t\t\t\tprops[ index ] = value[ index ];\n\t\t\t\t\tspecialEasing[ index ] = easing;\n\t\t\t\t}\n\t\t\t}\n\t\t} else {\n\t\t\tspecialEasing[ name ] = easing;\n\t\t}\n\t}\n}\n\nfunction Animation( elem, properties, options ) {\n\tvar result,\n\t\tstopped,\n\t\tindex = 0,\n\t\tlength = Animation.prefilters.length,\n\t\tdeferred = jQuery.Deferred().always( function() {\n\n\t\t\t// Don't match elem in the :animated selector\n\t\t\tdelete tick.elem;\n\t\t} ),\n\t\ttick = function() {\n\t\t\tif ( stopped ) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t\tvar currentTime = fxNow || createFxNow(),\n\t\t\t\tremaining = Math.max( 0, animation.startTime + animation.duration - currentTime ),\n\n\t\t\t\t// Support: Android 2.3 only\n\t\t\t\t// Archaic crash bug won't allow us to use `1 - ( 0.5 || 0 )` (trac-12497)\n\t\t\t\ttemp = remaining / animation.duration || 0,\n\t\t\t\tpercent = 1 - temp,\n\t\t\t\tindex = 0,\n\t\t\t\tlength = animation.tweens.length;\n\n\t\t\tfor ( ; index < length; index++ ) {\n\t\t\t\tanimation.tweens[ index ].run( percent );\n\t\t\t}\n\n\t\t\tdeferred.notifyWith( elem, [ animation, percent, remaining ] );\n\n\t\t\t// If there's more to do, yield\n\t\t\tif ( percent < 1 && length ) {\n\t\t\t\treturn remaining;\n\t\t\t}\n\n\t\t\t// If this was an empty animation, synthesize a final progress notification\n\t\t\tif ( !length ) {\n\t\t\t\tdeferred.notifyWith( elem, [ animation, 1, 0 ] );\n\t\t\t}\n\n\t\t\t// Resolve the animation and report its conclusion\n\t\t\tdeferred.resolveWith( elem, [ animation ] );\n\t\t\treturn false;\n\t\t},\n\t\tanimation = deferred.promise( {\n\t\t\telem: elem,\n\t\t\tprops: jQuery.extend( {}, properties ),\n\t\t\topts: jQuery.extend( true, {\n\t\t\t\tspecialEasing: {},\n\t\t\t\teasing: jQuery.easing._default\n\t\t\t}, options ),\n\t\t\toriginalProperties: properties,\n\t\t\toriginalOptions: options,\n\t\t\tstartTime: fxNow || createFxNow(),\n\t\t\tduration: options.duration,\n\t\t\ttweens: [],\n\t\t\tcreateTween: function( prop, end ) {\n\t\t\t\tvar tween = jQuery.Tween( elem, animation.opts, prop, end,\n\t\t\t\t\tanimation.opts.specialEasing[ prop ] || animation.opts.easing );\n\t\t\t\tanimation.tweens.push( tween );\n\t\t\t\treturn tween;\n\t\t\t},\n\t\t\tstop: function( gotoEnd ) {\n\t\t\t\tvar index = 0,\n\n\t\t\t\t\t// If we are going to the end, we want to run all the tweens\n\t\t\t\t\t// otherwise we skip this part\n\t\t\t\t\tlength = gotoEnd ? animation.tweens.length : 0;\n\t\t\t\tif ( stopped ) {\n\t\t\t\t\treturn this;\n\t\t\t\t}\n\t\t\t\tstopped = true;\n\t\t\t\tfor ( ; index < length; index++ ) {\n\t\t\t\t\tanimation.tweens[ index ].run( 1 );\n\t\t\t\t}\n\n\t\t\t\t// Resolve when we played the last frame; otherwise, reject\n\t\t\t\tif ( gotoEnd ) {\n\t\t\t\t\tdeferred.notifyWith( elem, [ animation, 1, 0 ] );\n\t\t\t\t\tdeferred.resolveWith( elem, [ animation, gotoEnd ] );\n\t\t\t\t} else {\n\t\t\t\t\tdeferred.rejectWith( elem, [ animation, gotoEnd ] );\n\t\t\t\t}\n\t\t\t\treturn this;\n\t\t\t}\n\t\t} ),\n\t\tprops = animation.props;\n\n\tpropFilter( props, animation.opts.specialEasing );\n\n\tfor ( ; index < length; index++ ) {\n\t\tresult = Animation.prefilters[ index ].call( animation, elem, props, animation.opts );\n\t\tif ( result ) {\n\t\t\tif ( isFunction( result.stop ) ) {\n\t\t\t\tjQuery._queueHooks( animation.elem, animation.opts.queue ).stop =\n\t\t\t\t\tresult.stop.bind( result );\n\t\t\t}\n\t\t\treturn result;\n\t\t}\n\t}\n\n\tjQuery.map( props, createTween, animation );\n\n\tif ( isFunction( animation.opts.start ) ) {\n\t\tanimation.opts.start.call( elem, animation );\n\t}\n\n\t// Attach callbacks from options\n\tanimation\n\t\t.progress( animation.opts.progress )\n\t\t.done( animation.opts.done, animation.opts.complete )\n\t\t.fail( animation.opts.fail )\n\t\t.always( animation.opts.always );\n\n\tjQuery.fx.timer(\n\t\tjQuery.extend( tick, {\n\t\t\telem: elem,\n\t\t\tanim: animation,\n\t\t\tqueue: animation.opts.queue\n\t\t} )\n\t);\n\n\treturn animation;\n}\n\njQuery.Animation = jQuery.extend( Animation, {\n\n\ttweeners: {\n\t\t\"*\": [ function( prop, value ) {\n\t\t\tvar tween = this.createTween( prop, value );\n\t\t\tadjustCSS( tween.elem, prop, rcssNum.exec( value ), tween );\n\t\t\treturn tween;\n\t\t} ]\n\t},\n\n\ttweener: function( props, callback ) {\n\t\tif ( isFunction( props ) ) {\n\t\t\tcallback = props;\n\t\t\tprops = [ \"*\" ];\n\t\t} else {\n\t\t\tprops = props.match( rnothtmlwhite );\n\t\t}\n\n\t\tvar prop,\n\t\t\tindex = 0,\n\t\t\tlength = props.length;\n\n\t\tfor ( ; index < length; index++ ) {\n\t\t\tprop = props[ index ];\n\t\t\tAnimation.tweeners[ prop ] = Animation.tweeners[ prop ] || [];\n\t\t\tAnimation.tweeners[ prop ].unshift( callback );\n\t\t}\n\t},\n\n\tprefilters: [ defaultPrefilter ],\n\n\tprefilter: function( callback, prepend ) {\n\t\tif ( prepend ) {\n\t\t\tAnimation.prefilters.unshift( callback );\n\t\t} else {\n\t\t\tAnimation.prefilters.push( callback );\n\t\t}\n\t}\n} );\n\njQuery.speed = function( speed, easing, fn ) {\n\tvar opt = speed && typeof speed === \"object\" ? jQuery.extend( {}, speed ) : {\n\t\tcomplete: fn || !fn && easing ||\n\t\t\tisFunction( speed ) && speed,\n\t\tduration: speed,\n\t\teasing: fn && easing || easing && !isFunction( easing ) && easing\n\t};\n\n\t// Go to the end state if fx are off\n\tif ( jQuery.fx.off ) {\n\t\topt.duration = 0;\n\n\t} else {\n\t\tif ( typeof opt.duration !== \"number\" ) {\n\t\t\tif ( opt.duration in jQuery.fx.speeds ) {\n\t\t\t\topt.duration = jQuery.fx.speeds[ opt.duration ];\n\n\t\t\t} else {\n\t\t\t\topt.duration = jQuery.fx.speeds._default;\n\t\t\t}\n\t\t}\n\t}\n\n\t// Normalize opt.queue - true/undefined/null -> \"fx\"\n\tif ( opt.queue == null || opt.queue === true ) {\n\t\topt.queue = \"fx\";\n\t}\n\n\t// Queueing\n\topt.old = opt.complete;\n\n\topt.complete = function() {\n\t\tif ( isFunction( opt.old ) ) {\n\t\t\topt.old.call( this );\n\t\t}\n\n\t\tif ( opt.queue ) {\n\t\t\tjQuery.dequeue( this, opt.queue );\n\t\t}\n\t};\n\n\treturn opt;\n};\n\njQuery.fn.extend( {\n\tfadeTo: function( speed, to, easing, callback ) {\n\n\t\t// Show any hidden elements after setting opacity to 0\n\t\treturn this.filter( isHiddenWithinTree ).css( \"opacity\", 0 ).show()\n\n\t\t\t// Animate to the value specified\n\t\t\t.end().animate( { opacity: to }, speed, easing, callback );\n\t},\n\tanimate: function( prop, speed, easing, callback ) {\n\t\tvar empty = jQuery.isEmptyObject( prop ),\n\t\t\toptall = jQuery.speed( speed, easing, callback ),\n\t\t\tdoAnimation = function() {\n\n\t\t\t\t// Operate on a copy of prop so per-property easing won't be lost\n\t\t\t\tvar anim = Animation( this, jQuery.extend( {}, prop ), optall );\n\n\t\t\t\t// Empty animations, or finishing resolves immediately\n\t\t\t\tif ( empty || dataPriv.get( this, \"finish\" ) ) {\n\t\t\t\t\tanim.stop( true );\n\t\t\t\t}\n\t\t\t};\n\n\t\tdoAnimation.finish = doAnimation;\n\n\t\treturn empty || optall.queue === false ?\n\t\t\tthis.each( doAnimation ) :\n\t\t\tthis.queue( optall.queue, doAnimation );\n\t},\n\tstop: function( type, clearQueue, gotoEnd ) {\n\t\tvar stopQueue = function( hooks ) {\n\t\t\tvar stop = hooks.stop;\n\t\t\tdelete hooks.stop;\n\t\t\tstop( gotoEnd );\n\t\t};\n\n\t\tif ( typeof type !== \"string\" ) {\n\t\t\tgotoEnd = clearQueue;\n\t\t\tclearQueue = type;\n\t\t\ttype = undefined;\n\t\t}\n\t\tif ( clearQueue ) {\n\t\t\tthis.queue( type || \"fx\", [] );\n\t\t}\n\n\t\treturn this.each( function() {\n\t\t\tvar dequeue = true,\n\t\t\t\tindex = type != null && type + \"queueHooks\",\n\t\t\t\ttimers = jQuery.timers,\n\t\t\t\tdata = dataPriv.get( this );\n\n\t\t\tif ( index ) {\n\t\t\t\tif ( data[ index ] && data[ index ].stop ) {\n\t\t\t\t\tstopQueue( data[ index ] );\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\tfor ( index in data ) {\n\t\t\t\t\tif ( data[ index ] && data[ index ].stop && rrun.test( index ) ) {\n\t\t\t\t\t\tstopQueue( data[ index ] );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tfor ( index = timers.length; index--; ) {\n\t\t\t\tif ( timers[ index ].elem === this &&\n\t\t\t\t\t( type == null || timers[ index ].queue === type ) ) {\n\n\t\t\t\t\ttimers[ index ].anim.stop( gotoEnd );\n\t\t\t\t\tdequeue = false;\n\t\t\t\t\ttimers.splice( index, 1 );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Start the next in the queue if the last step wasn't forced.\n\t\t\t// Timers currently will call their complete callbacks, which\n\t\t\t// will dequeue but only if they were gotoEnd.\n\t\t\tif ( dequeue || !gotoEnd ) {\n\t\t\t\tjQuery.dequeue( this, type );\n\t\t\t}\n\t\t} );\n\t},\n\tfinish: function( type ) {\n\t\tif ( type !== false ) {\n\t\t\ttype = type || \"fx\";\n\t\t}\n\t\treturn this.each( function() {\n\t\t\tvar index,\n\t\t\t\tdata = dataPriv.get( this ),\n\t\t\t\tqueue = data[ type + \"queue\" ],\n\t\t\t\thooks = data[ type + \"queueHooks\" ],\n\t\t\t\ttimers = jQuery.timers,\n\t\t\t\tlength = queue ? queue.length : 0;\n\n\t\t\t// Enable finishing flag on private data\n\t\t\tdata.finish = true;\n\n\t\t\t// Empty the queue first\n\t\t\tjQuery.queue( this, type, [] );\n\n\t\t\tif ( hooks && hooks.stop ) {\n\t\t\t\thooks.stop.call( this, true );\n\t\t\t}\n\n\t\t\t// Look for any active animations, and finish them\n\t\t\tfor ( index = timers.length; index--; ) {\n\t\t\t\tif ( timers[ index ].elem === this && timers[ index ].queue === type ) {\n\t\t\t\t\ttimers[ index ].anim.stop( true );\n\t\t\t\t\ttimers.splice( index, 1 );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Look for any animations in the old queue and finish them\n\t\t\tfor ( index = 0; index < length; index++ ) {\n\t\t\t\tif ( queue[ index ] && queue[ index ].finish ) {\n\t\t\t\t\tqueue[ index ].finish.call( this );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Turn off finishing flag\n\t\t\tdelete data.finish;\n\t\t} );\n\t}\n} );\n\njQuery.each( [ \"toggle\", \"show\", \"hide\" ], function( _i, name ) {\n\tvar cssFn = jQuery.fn[ name ];\n\tjQuery.fn[ name ] = function( speed, easing, callback ) {\n\t\treturn speed == null || typeof speed === \"boolean\" ?\n\t\t\tcssFn.apply( this, arguments ) :\n\t\t\tthis.animate( genFx( name, true ), speed, easing, callback );\n\t};\n} );\n\n// Generate shortcuts for custom animations\njQuery.each( {\n\tslideDown: genFx( \"show\" ),\n\tslideUp: genFx( \"hide\" ),\n\tslideToggle: genFx( \"toggle\" ),\n\tfadeIn: { opacity: \"show\" },\n\tfadeOut: { opacity: \"hide\" },\n\tfadeToggle: { opacity: \"toggle\" }\n}, function( name, props ) {\n\tjQuery.fn[ name ] = function( speed, easing, callback ) {\n\t\treturn this.animate( props, speed, easing, callback );\n\t};\n} );\n\njQuery.timers = [];\njQuery.fx.tick = function() {\n\tvar timer,\n\t\ti = 0,\n\t\ttimers = jQuery.timers;\n\n\tfxNow = Date.now();\n\n\tfor ( ; i < timers.length; i++ ) {\n\t\ttimer = timers[ i ];\n\n\t\t// Run the timer and safely remove it when done (allowing for external removal)\n\t\tif ( !timer() && timers[ i ] === timer ) {\n\t\t\ttimers.splice( i--, 1 );\n\t\t}\n\t}\n\n\tif ( !timers.length ) {\n\t\tjQuery.fx.stop();\n\t}\n\tfxNow = undefined;\n};\n\njQuery.fx.timer = function( timer ) {\n\tjQuery.timers.push( timer );\n\tjQuery.fx.start();\n};\n\njQuery.fx.interval = 13;\njQuery.fx.start = function() {\n\tif ( inProgress ) {\n\t\treturn;\n\t}\n\n\tinProgress = true;\n\tschedule();\n};\n\njQuery.fx.stop = function() {\n\tinProgress = null;\n};\n\njQuery.fx.speeds = {\n\tslow: 600,\n\tfast: 200,\n\n\t// Default speed\n\t_default: 400\n};\n\n\n// Based off of the plugin by Clint Helfers, with permission.\njQuery.fn.delay = function( time, type ) {\n\ttime = jQuery.fx ? jQuery.fx.speeds[ time ] || time : time;\n\ttype = type || \"fx\";\n\n\treturn this.queue( type, function( next, hooks ) {\n\t\tvar timeout = window.setTimeout( next, time );\n\t\thooks.stop = function() {\n\t\t\twindow.clearTimeout( timeout );\n\t\t};\n\t} );\n};\n\n\n( function() {\n\tvar input = document.createElement( \"input\" ),\n\t\tselect = document.createElement( \"select\" ),\n\t\topt = select.appendChild( document.createElement( \"option\" ) );\n\n\tinput.type = \"checkbox\";\n\n\t// Support: Android <=4.3 only\n\t// Default value for a checkbox should be \"on\"\n\tsupport.checkOn = input.value !== \"\";\n\n\t// Support: IE <=11 only\n\t// Must access selectedIndex to make default options select\n\tsupport.optSelected = opt.selected;\n\n\t// Support: IE <=11 only\n\t// An input loses its value after becoming a radio\n\tinput = document.createElement( \"input\" );\n\tinput.value = \"t\";\n\tinput.type = \"radio\";\n\tsupport.radioValue = input.value === \"t\";\n} )();\n\n\nvar boolHook,\n\tattrHandle = jQuery.expr.attrHandle;\n\njQuery.fn.extend( {\n\tattr: function( name, value ) {\n\t\treturn access( this, jQuery.attr, name, value, arguments.length > 1 );\n\t},\n\n\tremoveAttr: function( name ) {\n\t\treturn this.each( function() {\n\t\t\tjQuery.removeAttr( this, name );\n\t\t} );\n\t}\n} );\n\njQuery.extend( {\n\tattr: function( elem, name, value ) {\n\t\tvar ret, hooks,\n\t\t\tnType = elem.nodeType;\n\n\t\t// Don't get/set attributes on text, comment and attribute nodes\n\t\tif ( nType === 3 || nType === 8 || nType === 2 ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Fallback to prop when attributes are not supported\n\t\tif ( typeof elem.getAttribute === \"undefined\" ) {\n\t\t\treturn jQuery.prop( elem, name, value );\n\t\t}\n\n\t\t// Attribute hooks are determined by the lowercase version\n\t\t// Grab necessary hook if one is defined\n\t\tif ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) {\n\t\t\thooks = jQuery.attrHooks[ name.toLowerCase() ] ||\n\t\t\t\t( jQuery.expr.match.bool.test( name ) ? boolHook : undefined );\n\t\t}\n\n\t\tif ( value !== undefined ) {\n\t\t\tif ( value === null ) {\n\t\t\t\tjQuery.removeAttr( elem, name );\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tif ( hooks && \"set\" in hooks &&\n\t\t\t\t( ret = hooks.set( elem, value, name ) ) !== undefined ) {\n\t\t\t\treturn ret;\n\t\t\t}\n\n\t\t\telem.setAttribute( name, value + \"\" );\n\t\t\treturn value;\n\t\t}\n\n\t\tif ( hooks && \"get\" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) {\n\t\t\treturn ret;\n\t\t}\n\n\t\tret = jQuery.find.attr( elem, name );\n\n\t\t// Non-existent attributes return null, we normalize to undefined\n\t\treturn ret == null ? undefined : ret;\n\t},\n\n\tattrHooks: {\n\t\ttype: {\n\t\t\tset: function( elem, value ) {\n\t\t\t\tif ( !support.radioValue && value === \"radio\" &&\n\t\t\t\t\tnodeName( elem, \"input\" ) ) {\n\t\t\t\t\tvar val = elem.value;\n\t\t\t\t\telem.setAttribute( \"type\", value );\n\t\t\t\t\tif ( val ) {\n\t\t\t\t\t\telem.value = val;\n\t\t\t\t\t}\n\t\t\t\t\treturn value;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t},\n\n\tremoveAttr: function( elem, value ) {\n\t\tvar name,\n\t\t\ti = 0,\n\n\t\t\t// Attribute names can contain non-HTML whitespace characters\n\t\t\t// https://html.spec.whatwg.org/multipage/syntax.html#attributes-2\n\t\t\tattrNames = value && value.match( rnothtmlwhite );\n\n\t\tif ( attrNames && elem.nodeType === 1 ) {\n\t\t\twhile ( ( name = attrNames[ i++ ] ) ) {\n\t\t\t\telem.removeAttribute( name );\n\t\t\t}\n\t\t}\n\t}\n} );\n\n// Hooks for boolean attributes\nboolHook = {\n\tset: function( elem, value, name ) {\n\t\tif ( value === false ) {\n\n\t\t\t// Remove boolean attributes when set to false\n\t\t\tjQuery.removeAttr( elem, name );\n\t\t} else {\n\t\t\telem.setAttribute( name, name );\n\t\t}\n\t\treturn name;\n\t}\n};\n\njQuery.each( jQuery.expr.match.bool.source.match( /\\w+/g ), function( _i, name ) {\n\tvar getter = attrHandle[ name ] || jQuery.find.attr;\n\n\tattrHandle[ name ] = function( elem, name, isXML ) {\n\t\tvar ret, handle,\n\t\t\tlowercaseName = name.toLowerCase();\n\n\t\tif ( !isXML ) {\n\n\t\t\t// Avoid an infinite loop by temporarily removing this function from the getter\n\t\t\thandle = attrHandle[ lowercaseName ];\n\t\t\tattrHandle[ lowercaseName ] = ret;\n\t\t\tret = getter( elem, name, isXML ) != null ?\n\t\t\t\tlowercaseName :\n\t\t\t\tnull;\n\t\t\tattrHandle[ lowercaseName ] = handle;\n\t\t}\n\t\treturn ret;\n\t};\n} );\n\n\n\n\nvar rfocusable = /^(?:input|select|textarea|button)$/i,\n\trclickable = /^(?:a|area)$/i;\n\njQuery.fn.extend( {\n\tprop: function( name, value ) {\n\t\treturn access( this, jQuery.prop, name, value, arguments.length > 1 );\n\t},\n\n\tremoveProp: function( name ) {\n\t\treturn this.each( function() {\n\t\t\tdelete this[ jQuery.propFix[ name ] || name ];\n\t\t} );\n\t}\n} );\n\njQuery.extend( {\n\tprop: function( elem, name, value ) {\n\t\tvar ret, hooks,\n\t\t\tnType = elem.nodeType;\n\n\t\t// Don't get/set properties on text, comment and attribute nodes\n\t\tif ( nType === 3 || nType === 8 || nType === 2 ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) {\n\n\t\t\t// Fix name and attach hooks\n\t\t\tname = jQuery.propFix[ name ] || name;\n\t\t\thooks = jQuery.propHooks[ name ];\n\t\t}\n\n\t\tif ( value !== undefined ) {\n\t\t\tif ( hooks && \"set\" in hooks &&\n\t\t\t\t( ret = hooks.set( elem, value, name ) ) !== undefined ) {\n\t\t\t\treturn ret;\n\t\t\t}\n\n\t\t\treturn ( elem[ name ] = value );\n\t\t}\n\n\t\tif ( hooks && \"get\" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) {\n\t\t\treturn ret;\n\t\t}\n\n\t\treturn elem[ name ];\n\t},\n\n\tpropHooks: {\n\t\ttabIndex: {\n\t\t\tget: function( elem ) {\n\n\t\t\t\t// Support: IE <=9 - 11 only\n\t\t\t\t// elem.tabIndex doesn't always return the\n\t\t\t\t// correct value when it hasn't been explicitly set\n\t\t\t\t// Use proper attribute retrieval (trac-12072)\n\t\t\t\tvar tabindex = jQuery.find.attr( elem, \"tabindex\" );\n\n\t\t\t\tif ( tabindex ) {\n\t\t\t\t\treturn parseInt( tabindex, 10 );\n\t\t\t\t}\n\n\t\t\t\tif (\n\t\t\t\t\trfocusable.test( elem.nodeName ) ||\n\t\t\t\t\trclickable.test( elem.nodeName ) &&\n\t\t\t\t\telem.href\n\t\t\t\t) {\n\t\t\t\t\treturn 0;\n\t\t\t\t}\n\n\t\t\t\treturn -1;\n\t\t\t}\n\t\t}\n\t},\n\n\tpropFix: {\n\t\t\"for\": \"htmlFor\",\n\t\t\"class\": \"className\"\n\t}\n} );\n\n// Support: IE <=11 only\n// Accessing the selectedIndex property\n// forces the browser to respect setting selected\n// on the option\n// The getter ensures a default option is selected\n// when in an optgroup\n// eslint rule \"no-unused-expressions\" is disabled for this code\n// since it considers such accessions noop\nif ( !support.optSelected ) {\n\tjQuery.propHooks.selected = {\n\t\tget: function( elem ) {\n\n\t\t\t/* eslint no-unused-expressions: \"off\" */\n\n\t\t\tvar parent = elem.parentNode;\n\t\t\tif ( parent && parent.parentNode ) {\n\t\t\t\tparent.parentNode.selectedIndex;\n\t\t\t}\n\t\t\treturn null;\n\t\t},\n\t\tset: function( elem ) {\n\n\t\t\t/* eslint no-unused-expressions: \"off\" */\n\n\t\t\tvar parent = elem.parentNode;\n\t\t\tif ( parent ) {\n\t\t\t\tparent.selectedIndex;\n\n\t\t\t\tif ( parent.parentNode ) {\n\t\t\t\t\tparent.parentNode.selectedIndex;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t};\n}\n\njQuery.each( [\n\t\"tabIndex\",\n\t\"readOnly\",\n\t\"maxLength\",\n\t\"cellSpacing\",\n\t\"cellPadding\",\n\t\"rowSpan\",\n\t\"colSpan\",\n\t\"useMap\",\n\t\"frameBorder\",\n\t\"contentEditable\"\n], function() {\n\tjQuery.propFix[ this.toLowerCase() ] = this;\n} );\n\n\n\n\n\t// Strip and collapse whitespace according to HTML spec\n\t// https://infra.spec.whatwg.org/#strip-and-collapse-ascii-whitespace\n\tfunction stripAndCollapse( value ) {\n\t\tvar tokens = value.match( rnothtmlwhite ) || [];\n\t\treturn tokens.join( \" \" );\n\t}\n\n\nfunction getClass( elem ) {\n\treturn elem.getAttribute && elem.getAttribute( \"class\" ) || \"\";\n}\n\nfunction classesToArray( value ) {\n\tif ( Array.isArray( value ) ) {\n\t\treturn value;\n\t}\n\tif ( typeof value === \"string\" ) {\n\t\treturn value.match( rnothtmlwhite ) || [];\n\t}\n\treturn [];\n}\n\njQuery.fn.extend( {\n\taddClass: function( value ) {\n\t\tvar classNames, cur, curValue, className, i, finalValue;\n\n\t\tif ( isFunction( value ) ) {\n\t\t\treturn this.each( function( j ) {\n\t\t\t\tjQuery( this ).addClass( value.call( this, j, getClass( this ) ) );\n\t\t\t} );\n\t\t}\n\n\t\tclassNames = classesToArray( value );\n\n\t\tif ( classNames.length ) {\n\t\t\treturn this.each( function() {\n\t\t\t\tcurValue = getClass( this );\n\t\t\t\tcur = this.nodeType === 1 && ( \" \" + stripAndCollapse( curValue ) + \" \" );\n\n\t\t\t\tif ( cur ) {\n\t\t\t\t\tfor ( i = 0; i < classNames.length; i++ ) {\n\t\t\t\t\t\tclassName = classNames[ i ];\n\t\t\t\t\t\tif ( cur.indexOf( \" \" + className + \" \" ) < 0 ) {\n\t\t\t\t\t\t\tcur += className + \" \";\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\t// Only assign if different to avoid unneeded rendering.\n\t\t\t\t\tfinalValue = stripAndCollapse( cur );\n\t\t\t\t\tif ( curValue !== finalValue ) {\n\t\t\t\t\t\tthis.setAttribute( \"class\", finalValue );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} );\n\t\t}\n\n\t\treturn this;\n\t},\n\n\tremoveClass: function( value ) {\n\t\tvar classNames, cur, curValue, className, i, finalValue;\n\n\t\tif ( isFunction( value ) ) {\n\t\t\treturn this.each( function( j ) {\n\t\t\t\tjQuery( this ).removeClass( value.call( this, j, getClass( this ) ) );\n\t\t\t} );\n\t\t}\n\n\t\tif ( !arguments.length ) {\n\t\t\treturn this.attr( \"class\", \"\" );\n\t\t}\n\n\t\tclassNames = classesToArray( value );\n\n\t\tif ( classNames.length ) {\n\t\t\treturn this.each( function() {\n\t\t\t\tcurValue = getClass( this );\n\n\t\t\t\t// This expression is here for better compressibility (see addClass)\n\t\t\t\tcur = this.nodeType === 1 && ( \" \" + stripAndCollapse( curValue ) + \" \" );\n\n\t\t\t\tif ( cur ) {\n\t\t\t\t\tfor ( i = 0; i < classNames.length; i++ ) {\n\t\t\t\t\t\tclassName = classNames[ i ];\n\n\t\t\t\t\t\t// Remove *all* instances\n\t\t\t\t\t\twhile ( cur.indexOf( \" \" + className + \" \" ) > -1 ) {\n\t\t\t\t\t\t\tcur = cur.replace( \" \" + className + \" \", \" \" );\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\t// Only assign if different to avoid unneeded rendering.\n\t\t\t\t\tfinalValue = stripAndCollapse( cur );\n\t\t\t\t\tif ( curValue !== finalValue ) {\n\t\t\t\t\t\tthis.setAttribute( \"class\", finalValue );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} );\n\t\t}\n\n\t\treturn this;\n\t},\n\n\ttoggleClass: function( value, stateVal ) {\n\t\tvar classNames, className, i, self,\n\t\t\ttype = typeof value,\n\t\t\tisValidValue = type === \"string\" || Array.isArray( value );\n\n\t\tif ( isFunction( value ) ) {\n\t\t\treturn this.each( function( i ) {\n\t\t\t\tjQuery( this ).toggleClass(\n\t\t\t\t\tvalue.call( this, i, getClass( this ), stateVal ),\n\t\t\t\t\tstateVal\n\t\t\t\t);\n\t\t\t} );\n\t\t}\n\n\t\tif ( typeof stateVal === \"boolean\" && isValidValue ) {\n\t\t\treturn stateVal ? this.addClass( value ) : this.removeClass( value );\n\t\t}\n\n\t\tclassNames = classesToArray( value );\n\n\t\treturn this.each( function() {\n\t\t\tif ( isValidValue ) {\n\n\t\t\t\t// Toggle individual class names\n\t\t\t\tself = jQuery( this );\n\n\t\t\t\tfor ( i = 0; i < classNames.length; i++ ) {\n\t\t\t\t\tclassName = classNames[ i ];\n\n\t\t\t\t\t// Check each className given, space separated list\n\t\t\t\t\tif ( self.hasClass( className ) ) {\n\t\t\t\t\t\tself.removeClass( className );\n\t\t\t\t\t} else {\n\t\t\t\t\t\tself.addClass( className );\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t// Toggle whole class name\n\t\t\t} else if ( value === undefined || type === \"boolean\" ) {\n\t\t\t\tclassName = getClass( this );\n\t\t\t\tif ( className ) {\n\n\t\t\t\t\t// Store className if set\n\t\t\t\t\tdataPriv.set( this, \"__className__\", className );\n\t\t\t\t}\n\n\t\t\t\t// If the element has a class name or if we're passed `false`,\n\t\t\t\t// then remove the whole classname (if there was one, the above saved it).\n\t\t\t\t// Otherwise bring back whatever was previously saved (if anything),\n\t\t\t\t// falling back to the empty string if nothing was stored.\n\t\t\t\tif ( this.setAttribute ) {\n\t\t\t\t\tthis.setAttribute( \"class\",\n\t\t\t\t\t\tclassName || value === false ?\n\t\t\t\t\t\t\t\"\" :\n\t\t\t\t\t\t\tdataPriv.get( this, \"__className__\" ) || \"\"\n\t\t\t\t\t);\n\t\t\t\t}\n\t\t\t}\n\t\t} );\n\t},\n\n\thasClass: function( selector ) {\n\t\tvar className, elem,\n\t\t\ti = 0;\n\n\t\tclassName = \" \" + selector + \" \";\n\t\twhile ( ( elem = this[ i++ ] ) ) {\n\t\t\tif ( elem.nodeType === 1 &&\n\t\t\t\t( \" \" + stripAndCollapse( getClass( elem ) ) + \" \" ).indexOf( className ) > -1 ) {\n\t\t\t\treturn true;\n\t\t\t}\n\t\t}\n\n\t\treturn false;\n\t}\n} );\n\n\n\n\nvar rreturn = /\\r/g;\n\njQuery.fn.extend( {\n\tval: function( value ) {\n\t\tvar hooks, ret, valueIsFunction,\n\t\t\telem = this[ 0 ];\n\n\t\tif ( !arguments.length ) {\n\t\t\tif ( elem ) {\n\t\t\t\thooks = jQuery.valHooks[ elem.type ] ||\n\t\t\t\t\tjQuery.valHooks[ elem.nodeName.toLowerCase() ];\n\n\t\t\t\tif ( hooks &&\n\t\t\t\t\t\"get\" in hooks &&\n\t\t\t\t\t( ret = hooks.get( elem, \"value\" ) ) !== undefined\n\t\t\t\t) {\n\t\t\t\t\treturn ret;\n\t\t\t\t}\n\n\t\t\t\tret = elem.value;\n\n\t\t\t\t// Handle most common string cases\n\t\t\t\tif ( typeof ret === \"string\" ) {\n\t\t\t\t\treturn ret.replace( rreturn, \"\" );\n\t\t\t\t}\n\n\t\t\t\t// Handle cases where value is null/undef or number\n\t\t\t\treturn ret == null ? \"\" : ret;\n\t\t\t}\n\n\t\t\treturn;\n\t\t}\n\n\t\tvalueIsFunction = isFunction( value );\n\n\t\treturn this.each( function( i ) {\n\t\t\tvar val;\n\n\t\t\tif ( this.nodeType !== 1 ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tif ( valueIsFunction ) {\n\t\t\t\tval = value.call( this, i, jQuery( this ).val() );\n\t\t\t} else {\n\t\t\t\tval = value;\n\t\t\t}\n\n\t\t\t// Treat null/undefined as \"\"; convert numbers to string\n\t\t\tif ( val == null ) {\n\t\t\t\tval = \"\";\n\n\t\t\t} else if ( typeof val === \"number\" ) {\n\t\t\t\tval += \"\";\n\n\t\t\t} else if ( Array.isArray( val ) ) {\n\t\t\t\tval = jQuery.map( val, function( value ) {\n\t\t\t\t\treturn value == null ? \"\" : value + \"\";\n\t\t\t\t} );\n\t\t\t}\n\n\t\t\thooks = jQuery.valHooks[ this.type ] || jQuery.valHooks[ this.nodeName.toLowerCase() ];\n\n\t\t\t// If set returns undefined, fall back to normal setting\n\t\t\tif ( !hooks || !( \"set\" in hooks ) || hooks.set( this, val, \"value\" ) === undefined ) {\n\t\t\t\tthis.value = val;\n\t\t\t}\n\t\t} );\n\t}\n} );\n\njQuery.extend( {\n\tvalHooks: {\n\t\toption: {\n\t\t\tget: function( elem ) {\n\n\t\t\t\tvar val = jQuery.find.attr( elem, \"value\" );\n\t\t\t\treturn val != null ?\n\t\t\t\t\tval :\n\n\t\t\t\t\t// Support: IE <=10 - 11 only\n\t\t\t\t\t// option.text throws exceptions (trac-14686, trac-14858)\n\t\t\t\t\t// Strip and collapse whitespace\n\t\t\t\t\t// https://html.spec.whatwg.org/#strip-and-collapse-whitespace\n\t\t\t\t\tstripAndCollapse( jQuery.text( elem ) );\n\t\t\t}\n\t\t},\n\t\tselect: {\n\t\t\tget: function( elem ) {\n\t\t\t\tvar value, option, i,\n\t\t\t\t\toptions = elem.options,\n\t\t\t\t\tindex = elem.selectedIndex,\n\t\t\t\t\tone = elem.type === \"select-one\",\n\t\t\t\t\tvalues = one ? null : [],\n\t\t\t\t\tmax = one ? index + 1 : options.length;\n\n\t\t\t\tif ( index < 0 ) {\n\t\t\t\t\ti = max;\n\n\t\t\t\t} else {\n\t\t\t\t\ti = one ? index : 0;\n\t\t\t\t}\n\n\t\t\t\t// Loop through all the selected options\n\t\t\t\tfor ( ; i < max; i++ ) {\n\t\t\t\t\toption = options[ i ];\n\n\t\t\t\t\t// Support: IE <=9 only\n\t\t\t\t\t// IE8-9 doesn't update selected after form reset (trac-2551)\n\t\t\t\t\tif ( ( option.selected || i === index ) &&\n\n\t\t\t\t\t\t\t// Don't return options that are disabled or in a disabled optgroup\n\t\t\t\t\t\t\t!option.disabled &&\n\t\t\t\t\t\t\t( !option.parentNode.disabled ||\n\t\t\t\t\t\t\t\t!nodeName( option.parentNode, \"optgroup\" ) ) ) {\n\n\t\t\t\t\t\t// Get the specific value for the option\n\t\t\t\t\t\tvalue = jQuery( option ).val();\n\n\t\t\t\t\t\t// We don't need an array for one selects\n\t\t\t\t\t\tif ( one ) {\n\t\t\t\t\t\t\treturn value;\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t// Multi-Selects return an array\n\t\t\t\t\t\tvalues.push( value );\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\treturn values;\n\t\t\t},\n\n\t\t\tset: function( elem, value ) {\n\t\t\t\tvar optionSet, option,\n\t\t\t\t\toptions = elem.options,\n\t\t\t\t\tvalues = jQuery.makeArray( value ),\n\t\t\t\t\ti = options.length;\n\n\t\t\t\twhile ( i-- ) {\n\t\t\t\t\toption = options[ i ];\n\n\t\t\t\t\t/* eslint-disable no-cond-assign */\n\n\t\t\t\t\tif ( option.selected =\n\t\t\t\t\t\tjQuery.inArray( jQuery.valHooks.option.get( option ), values ) > -1\n\t\t\t\t\t) {\n\t\t\t\t\t\toptionSet = true;\n\t\t\t\t\t}\n\n\t\t\t\t\t/* eslint-enable no-cond-assign */\n\t\t\t\t}\n\n\t\t\t\t// Force browsers to behave consistently when non-matching value is set\n\t\t\t\tif ( !optionSet ) {\n\t\t\t\t\telem.selectedIndex = -1;\n\t\t\t\t}\n\t\t\t\treturn values;\n\t\t\t}\n\t\t}\n\t}\n} );\n\n// Radios and checkboxes getter/setter\njQuery.each( [ \"radio\", \"checkbox\" ], function() {\n\tjQuery.valHooks[ this ] = {\n\t\tset: function( elem, value ) {\n\t\t\tif ( Array.isArray( value ) ) {\n\t\t\t\treturn ( elem.checked = jQuery.inArray( jQuery( elem ).val(), value ) > -1 );\n\t\t\t}\n\t\t}\n\t};\n\tif ( !support.checkOn ) {\n\t\tjQuery.valHooks[ this ].get = function( elem ) {\n\t\t\treturn elem.getAttribute( \"value\" ) === null ? \"on\" : elem.value;\n\t\t};\n\t}\n} );\n\n\n\n\n// Return jQuery for attributes-only inclusion\nvar location = window.location;\n\nvar nonce = { guid: Date.now() };\n\nvar rquery = ( /\\?/ );\n\n\n\n// Cross-browser xml parsing\njQuery.parseXML = function( data ) {\n\tvar xml, parserErrorElem;\n\tif ( !data || typeof data !== \"string\" ) {\n\t\treturn null;\n\t}\n\n\t// Support: IE 9 - 11 only\n\t// IE throws on parseFromString with invalid input.\n\ttry {\n\t\txml = ( new window.DOMParser() ).parseFromString( data, \"text/xml\" );\n\t} catch ( e ) {}\n\n\tparserErrorElem = xml && xml.getElementsByTagName( \"parsererror\" )[ 0 ];\n\tif ( !xml || parserErrorElem ) {\n\t\tjQuery.error( \"Invalid XML: \" + (\n\t\t\tparserErrorElem ?\n\t\t\t\tjQuery.map( parserErrorElem.childNodes, function( el ) {\n\t\t\t\t\treturn el.textContent;\n\t\t\t\t} ).join( \"\\n\" ) :\n\t\t\t\tdata\n\t\t) );\n\t}\n\treturn xml;\n};\n\n\nvar rfocusMorph = /^(?:focusinfocus|focusoutblur)$/,\n\tstopPropagationCallback = function( e ) {\n\t\te.stopPropagation();\n\t};\n\njQuery.extend( jQuery.event, {\n\n\ttrigger: function( event, data, elem, onlyHandlers ) {\n\n\t\tvar i, cur, tmp, bubbleType, ontype, handle, special, lastElement,\n\t\t\teventPath = [ elem || document ],\n\t\t\ttype = hasOwn.call( event, \"type\" ) ? event.type : event,\n\t\t\tnamespaces = hasOwn.call( event, \"namespace\" ) ? event.namespace.split( \".\" ) : [];\n\n\t\tcur = lastElement = tmp = elem = elem || document;\n\n\t\t// Don't do events on text and comment nodes\n\t\tif ( elem.nodeType === 3 || elem.nodeType === 8 ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// focus/blur morphs to focusin/out; ensure we're not firing them right now\n\t\tif ( rfocusMorph.test( type + jQuery.event.triggered ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( type.indexOf( \".\" ) > -1 ) {\n\n\t\t\t// Namespaced trigger; create a regexp to match event type in handle()\n\t\t\tnamespaces = type.split( \".\" );\n\t\t\ttype = namespaces.shift();\n\t\t\tnamespaces.sort();\n\t\t}\n\t\tontype = type.indexOf( \":\" ) < 0 && \"on\" + type;\n\n\t\t// Caller can pass in a jQuery.Event object, Object, or just an event type string\n\t\tevent = event[ jQuery.expando ] ?\n\t\t\tevent :\n\t\t\tnew jQuery.Event( type, typeof event === \"object\" && event );\n\n\t\t// Trigger bitmask: & 1 for native handlers; & 2 for jQuery (always true)\n\t\tevent.isTrigger = onlyHandlers ? 2 : 3;\n\t\tevent.namespace = namespaces.join( \".\" );\n\t\tevent.rnamespace = event.namespace ?\n\t\t\tnew RegExp( \"(^|\\\\.)\" + namespaces.join( \"\\\\.(?:.*\\\\.|)\" ) + \"(\\\\.|$)\" ) :\n\t\t\tnull;\n\n\t\t// Clean up the event in case it is being reused\n\t\tevent.result = undefined;\n\t\tif ( !event.target ) {\n\t\t\tevent.target = elem;\n\t\t}\n\n\t\t// Clone any incoming data and prepend the event, creating the handler arg list\n\t\tdata = data == null ?\n\t\t\t[ event ] :\n\t\t\tjQuery.makeArray( data, [ event ] );\n\n\t\t// Allow special events to draw outside the lines\n\t\tspecial = jQuery.event.special[ type ] || {};\n\t\tif ( !onlyHandlers && special.trigger && special.trigger.apply( elem, data ) === false ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Determine event propagation path in advance, per W3C events spec (trac-9951)\n\t\t// Bubble up to document, then to window; watch for a global ownerDocument var (trac-9724)\n\t\tif ( !onlyHandlers && !special.noBubble && !isWindow( elem ) ) {\n\n\t\t\tbubbleType = special.delegateType || type;\n\t\t\tif ( !rfocusMorph.test( bubbleType + type ) ) {\n\t\t\t\tcur = cur.parentNode;\n\t\t\t}\n\t\t\tfor ( ; cur; cur = cur.parentNode ) {\n\t\t\t\teventPath.push( cur );\n\t\t\t\ttmp = cur;\n\t\t\t}\n\n\t\t\t// Only add window if we got to document (e.g., not plain obj or detached DOM)\n\t\t\tif ( tmp === ( elem.ownerDocument || document ) ) {\n\t\t\t\teventPath.push( tmp.defaultView || tmp.parentWindow || window );\n\t\t\t}\n\t\t}\n\n\t\t// Fire handlers on the event path\n\t\ti = 0;\n\t\twhile ( ( cur = eventPath[ i++ ] ) && !event.isPropagationStopped() ) {\n\t\t\tlastElement = cur;\n\t\t\tevent.type = i > 1 ?\n\t\t\t\tbubbleType :\n\t\t\t\tspecial.bindType || type;\n\n\t\t\t// jQuery handler\n\t\t\thandle = ( dataPriv.get( cur, \"events\" ) || Object.create( null ) )[ event.type ] &&\n\t\t\t\tdataPriv.get( cur, \"handle\" );\n\t\t\tif ( handle ) {\n\t\t\t\thandle.apply( cur, data );\n\t\t\t}\n\n\t\t\t// Native handler\n\t\t\thandle = ontype && cur[ ontype ];\n\t\t\tif ( handle && handle.apply && acceptData( cur ) ) {\n\t\t\t\tevent.result = handle.apply( cur, data );\n\t\t\t\tif ( event.result === false ) {\n\t\t\t\t\tevent.preventDefault();\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t\tevent.type = type;\n\n\t\t// If nobody prevented the default action, do it now\n\t\tif ( !onlyHandlers && !event.isDefaultPrevented() ) {\n\n\t\t\tif ( ( !special._default ||\n\t\t\t\tspecial._default.apply( eventPath.pop(), data ) === false ) &&\n\t\t\t\tacceptData( elem ) ) {\n\n\t\t\t\t// Call a native DOM method on the target with the same name as the event.\n\t\t\t\t// Don't do default actions on window, that's where global variables be (trac-6170)\n\t\t\t\tif ( ontype && isFunction( elem[ type ] ) && !isWindow( elem ) ) {\n\n\t\t\t\t\t// Don't re-trigger an onFOO event when we call its FOO() method\n\t\t\t\t\ttmp = elem[ ontype ];\n\n\t\t\t\t\tif ( tmp ) {\n\t\t\t\t\t\telem[ ontype ] = null;\n\t\t\t\t\t}\n\n\t\t\t\t\t// Prevent re-triggering of the same event, since we already bubbled it above\n\t\t\t\t\tjQuery.event.triggered = type;\n\n\t\t\t\t\tif ( event.isPropagationStopped() ) {\n\t\t\t\t\t\tlastElement.addEventListener( type, stopPropagationCallback );\n\t\t\t\t\t}\n\n\t\t\t\t\telem[ type ]();\n\n\t\t\t\t\tif ( event.isPropagationStopped() ) {\n\t\t\t\t\t\tlastElement.removeEventListener( type, stopPropagationCallback );\n\t\t\t\t\t}\n\n\t\t\t\t\tjQuery.event.triggered = undefined;\n\n\t\t\t\t\tif ( tmp ) {\n\t\t\t\t\t\telem[ ontype ] = tmp;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn event.result;\n\t},\n\n\t// Piggyback on a donor event to simulate a different one\n\t// Used only for `focus(in | out)` events\n\tsimulate: function( type, elem, event ) {\n\t\tvar e = jQuery.extend(\n\t\t\tnew jQuery.Event(),\n\t\t\tevent,\n\t\t\t{\n\t\t\t\ttype: type,\n\t\t\t\tisSimulated: true\n\t\t\t}\n\t\t);\n\n\t\tjQuery.event.trigger( e, null, elem );\n\t}\n\n} );\n\njQuery.fn.extend( {\n\n\ttrigger: function( type, data ) {\n\t\treturn this.each( function() {\n\t\t\tjQuery.event.trigger( type, data, this );\n\t\t} );\n\t},\n\ttriggerHandler: function( type, data ) {\n\t\tvar elem = this[ 0 ];\n\t\tif ( elem ) {\n\t\t\treturn jQuery.event.trigger( type, data, elem, true );\n\t\t}\n\t}\n} );\n\n\nvar\n\trbracket = /\\[\\]$/,\n\trCRLF = /\\r?\\n/g,\n\trsubmitterTypes = /^(?:submit|button|image|reset|file)$/i,\n\trsubmittable = /^(?:input|select|textarea|keygen)/i;\n\nfunction buildParams( prefix, obj, traditional, add ) {\n\tvar name;\n\n\tif ( Array.isArray( obj ) ) {\n\n\t\t// Serialize array item.\n\t\tjQuery.each( obj, function( i, v ) {\n\t\t\tif ( traditional || rbracket.test( prefix ) ) {\n\n\t\t\t\t// Treat each array item as a scalar.\n\t\t\t\tadd( prefix, v );\n\n\t\t\t} else {\n\n\t\t\t\t// Item is non-scalar (array or object), encode its numeric index.\n\t\t\t\tbuildParams(\n\t\t\t\t\tprefix + \"[\" + ( typeof v === \"object\" && v != null ? i : \"\" ) + \"]\",\n\t\t\t\t\tv,\n\t\t\t\t\ttraditional,\n\t\t\t\t\tadd\n\t\t\t\t);\n\t\t\t}\n\t\t} );\n\n\t} else if ( !traditional && toType( obj ) === \"object\" ) {\n\n\t\t// Serialize object item.\n\t\tfor ( name in obj ) {\n\t\t\tbuildParams( prefix + \"[\" + name + \"]\", obj[ name ], traditional, add );\n\t\t}\n\n\t} else {\n\n\t\t// Serialize scalar item.\n\t\tadd( prefix, obj );\n\t}\n}\n\n// Serialize an array of form elements or a set of\n// key/values into a query string\njQuery.param = function( a, traditional ) {\n\tvar prefix,\n\t\ts = [],\n\t\tadd = function( key, valueOrFunction ) {\n\n\t\t\t// If value is a function, invoke it and use its return value\n\t\t\tvar value = isFunction( valueOrFunction ) ?\n\t\t\t\tvalueOrFunction() :\n\t\t\t\tvalueOrFunction;\n\n\t\t\ts[ s.length ] = encodeURIComponent( key ) + \"=\" +\n\t\t\t\tencodeURIComponent( value == null ? \"\" : value );\n\t\t};\n\n\tif ( a == null ) {\n\t\treturn \"\";\n\t}\n\n\t// If an array was passed in, assume that it is an array of form elements.\n\tif ( Array.isArray( a ) || ( a.jquery && !jQuery.isPlainObject( a ) ) ) {\n\n\t\t// Serialize the form elements\n\t\tjQuery.each( a, function() {\n\t\t\tadd( this.name, this.value );\n\t\t} );\n\n\t} else {\n\n\t\t// If traditional, encode the \"old\" way (the way 1.3.2 or older\n\t\t// did it), otherwise encode params recursively.\n\t\tfor ( prefix in a ) {\n\t\t\tbuildParams( prefix, a[ prefix ], traditional, add );\n\t\t}\n\t}\n\n\t// Return the resulting serialization\n\treturn s.join( \"&\" );\n};\n\njQuery.fn.extend( {\n\tserialize: function() {\n\t\treturn jQuery.param( this.serializeArray() );\n\t},\n\tserializeArray: function() {\n\t\treturn this.map( function() {\n\n\t\t\t// Can add propHook for \"elements\" to filter or add form elements\n\t\t\tvar elements = jQuery.prop( this, \"elements\" );\n\t\t\treturn elements ? jQuery.makeArray( elements ) : this;\n\t\t} ).filter( function() {\n\t\t\tvar type = this.type;\n\n\t\t\t// Use .is( \":disabled\" ) so that fieldset[disabled] works\n\t\t\treturn this.name && !jQuery( this ).is( \":disabled\" ) &&\n\t\t\t\trsubmittable.test( this.nodeName ) && !rsubmitterTypes.test( type ) &&\n\t\t\t\t( this.checked || !rcheckableType.test( type ) );\n\t\t} ).map( function( _i, elem ) {\n\t\t\tvar val = jQuery( this ).val();\n\n\t\t\tif ( val == null ) {\n\t\t\t\treturn null;\n\t\t\t}\n\n\t\t\tif ( Array.isArray( val ) ) {\n\t\t\t\treturn jQuery.map( val, function( val ) {\n\t\t\t\t\treturn { name: elem.name, value: val.replace( rCRLF, \"\\r\\n\" ) };\n\t\t\t\t} );\n\t\t\t}\n\n\t\t\treturn { name: elem.name, value: val.replace( rCRLF, \"\\r\\n\" ) };\n\t\t} ).get();\n\t}\n} );\n\n\nvar\n\tr20 = /%20/g,\n\trhash = /#.*$/,\n\trantiCache = /([?&])_=[^&]*/,\n\trheaders = /^(.*?):[ \\t]*([^\\r\\n]*)$/mg,\n\n\t// trac-7653, trac-8125, trac-8152: local protocol detection\n\trlocalProtocol = /^(?:about|app|app-storage|.+-extension|file|res|widget):$/,\n\trnoContent = /^(?:GET|HEAD)$/,\n\trprotocol = /^\\/\\//,\n\n\t/* Prefilters\n\t * 1) They are useful to introduce custom dataTypes (see ajax/jsonp.js for an example)\n\t * 2) These are called:\n\t * - BEFORE asking for a transport\n\t * - AFTER param serialization (s.data is a string if s.processData is true)\n\t * 3) key is the dataType\n\t * 4) the catchall symbol \"*\" can be used\n\t * 5) execution will start with transport dataType and THEN continue down to \"*\" if needed\n\t */\n\tprefilters = {},\n\n\t/* Transports bindings\n\t * 1) key is the dataType\n\t * 2) the catchall symbol \"*\" can be used\n\t * 3) selection will start with transport dataType and THEN go to \"*\" if needed\n\t */\n\ttransports = {},\n\n\t// Avoid comment-prolog char sequence (trac-10098); must appease lint and evade compression\n\tallTypes = \"*/\".concat( \"*\" ),\n\n\t// Anchor tag for parsing the document origin\n\toriginAnchor = document.createElement( \"a\" );\n\noriginAnchor.href = location.href;\n\n// Base \"constructor\" for jQuery.ajaxPrefilter and jQuery.ajaxTransport\nfunction addToPrefiltersOrTransports( structure ) {\n\n\t// dataTypeExpression is optional and defaults to \"*\"\n\treturn function( dataTypeExpression, func ) {\n\n\t\tif ( typeof dataTypeExpression !== \"string\" ) {\n\t\t\tfunc = dataTypeExpression;\n\t\t\tdataTypeExpression = \"*\";\n\t\t}\n\n\t\tvar dataType,\n\t\t\ti = 0,\n\t\t\tdataTypes = dataTypeExpression.toLowerCase().match( rnothtmlwhite ) || [];\n\n\t\tif ( isFunction( func ) ) {\n\n\t\t\t// For each dataType in the dataTypeExpression\n\t\t\twhile ( ( dataType = dataTypes[ i++ ] ) ) {\n\n\t\t\t\t// Prepend if requested\n\t\t\t\tif ( dataType[ 0 ] === \"+\" ) {\n\t\t\t\t\tdataType = dataType.slice( 1 ) || \"*\";\n\t\t\t\t\t( structure[ dataType ] = structure[ dataType ] || [] ).unshift( func );\n\n\t\t\t\t// Otherwise append\n\t\t\t\t} else {\n\t\t\t\t\t( structure[ dataType ] = structure[ dataType ] || [] ).push( func );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t};\n}\n\n// Base inspection function for prefilters and transports\nfunction inspectPrefiltersOrTransports( structure, options, originalOptions, jqXHR ) {\n\n\tvar inspected = {},\n\t\tseekingTransport = ( structure === transports );\n\n\tfunction inspect( dataType ) {\n\t\tvar selected;\n\t\tinspected[ dataType ] = true;\n\t\tjQuery.each( structure[ dataType ] || [], function( _, prefilterOrFactory ) {\n\t\t\tvar dataTypeOrTransport = prefilterOrFactory( options, originalOptions, jqXHR );\n\t\t\tif ( typeof dataTypeOrTransport === \"string\" &&\n\t\t\t\t!seekingTransport && !inspected[ dataTypeOrTransport ] ) {\n\n\t\t\t\toptions.dataTypes.unshift( dataTypeOrTransport );\n\t\t\t\tinspect( dataTypeOrTransport );\n\t\t\t\treturn false;\n\t\t\t} else if ( seekingTransport ) {\n\t\t\t\treturn !( selected = dataTypeOrTransport );\n\t\t\t}\n\t\t} );\n\t\treturn selected;\n\t}\n\n\treturn inspect( options.dataTypes[ 0 ] ) || !inspected[ \"*\" ] && inspect( \"*\" );\n}\n\n// A special extend for ajax options\n// that takes \"flat\" options (not to be deep extended)\n// Fixes trac-9887\nfunction ajaxExtend( target, src ) {\n\tvar key, deep,\n\t\tflatOptions = jQuery.ajaxSettings.flatOptions || {};\n\n\tfor ( key in src ) {\n\t\tif ( src[ key ] !== undefined ) {\n\t\t\t( flatOptions[ key ] ? target : ( deep || ( deep = {} ) ) )[ key ] = src[ key ];\n\t\t}\n\t}\n\tif ( deep ) {\n\t\tjQuery.extend( true, target, deep );\n\t}\n\n\treturn target;\n}\n\n/* Handles responses to an ajax request:\n * - finds the right dataType (mediates between content-type and expected dataType)\n * - returns the corresponding response\n */\nfunction ajaxHandleResponses( s, jqXHR, responses ) {\n\n\tvar ct, type, finalDataType, firstDataType,\n\t\tcontents = s.contents,\n\t\tdataTypes = s.dataTypes;\n\n\t// Remove auto dataType and get content-type in the process\n\twhile ( dataTypes[ 0 ] === \"*\" ) {\n\t\tdataTypes.shift();\n\t\tif ( ct === undefined ) {\n\t\t\tct = s.mimeType || jqXHR.getResponseHeader( \"Content-Type\" );\n\t\t}\n\t}\n\n\t// Check if we're dealing with a known content-type\n\tif ( ct ) {\n\t\tfor ( type in contents ) {\n\t\t\tif ( contents[ type ] && contents[ type ].test( ct ) ) {\n\t\t\t\tdataTypes.unshift( type );\n\t\t\t\tbreak;\n\t\t\t}\n\t\t}\n\t}\n\n\t// Check to see if we have a response for the expected dataType\n\tif ( dataTypes[ 0 ] in responses ) {\n\t\tfinalDataType = dataTypes[ 0 ];\n\t} else {\n\n\t\t// Try convertible dataTypes\n\t\tfor ( type in responses ) {\n\t\t\tif ( !dataTypes[ 0 ] || s.converters[ type + \" \" + dataTypes[ 0 ] ] ) {\n\t\t\t\tfinalDataType = type;\n\t\t\t\tbreak;\n\t\t\t}\n\t\t\tif ( !firstDataType ) {\n\t\t\t\tfirstDataType = type;\n\t\t\t}\n\t\t}\n\n\t\t// Or just use first one\n\t\tfinalDataType = finalDataType || firstDataType;\n\t}\n\n\t// If we found a dataType\n\t// We add the dataType to the list if needed\n\t// and return the corresponding response\n\tif ( finalDataType ) {\n\t\tif ( finalDataType !== dataTypes[ 0 ] ) {\n\t\t\tdataTypes.unshift( finalDataType );\n\t\t}\n\t\treturn responses[ finalDataType ];\n\t}\n}\n\n/* Chain conversions given the request and the original response\n * Also sets the responseXXX fields on the jqXHR instance\n */\nfunction ajaxConvert( s, response, jqXHR, isSuccess ) {\n\tvar conv2, current, conv, tmp, prev,\n\t\tconverters = {},\n\n\t\t// Work with a copy of dataTypes in case we need to modify it for conversion\n\t\tdataTypes = s.dataTypes.slice();\n\n\t// Create converters map with lowercased keys\n\tif ( dataTypes[ 1 ] ) {\n\t\tfor ( conv in s.converters ) {\n\t\t\tconverters[ conv.toLowerCase() ] = s.converters[ conv ];\n\t\t}\n\t}\n\n\tcurrent = dataTypes.shift();\n\n\t// Convert to each sequential dataType\n\twhile ( current ) {\n\n\t\tif ( s.responseFields[ current ] ) {\n\t\t\tjqXHR[ s.responseFields[ current ] ] = response;\n\t\t}\n\n\t\t// Apply the dataFilter if provided\n\t\tif ( !prev && isSuccess && s.dataFilter ) {\n\t\t\tresponse = s.dataFilter( response, s.dataType );\n\t\t}\n\n\t\tprev = current;\n\t\tcurrent = dataTypes.shift();\n\n\t\tif ( current ) {\n\n\t\t\t// There's only work to do if current dataType is non-auto\n\t\t\tif ( current === \"*\" ) {\n\n\t\t\t\tcurrent = prev;\n\n\t\t\t// Convert response if prev dataType is non-auto and differs from current\n\t\t\t} else if ( prev !== \"*\" && prev !== current ) {\n\n\t\t\t\t// Seek a direct converter\n\t\t\t\tconv = converters[ prev + \" \" + current ] || converters[ \"* \" + current ];\n\n\t\t\t\t// If none found, seek a pair\n\t\t\t\tif ( !conv ) {\n\t\t\t\t\tfor ( conv2 in converters ) {\n\n\t\t\t\t\t\t// If conv2 outputs current\n\t\t\t\t\t\ttmp = conv2.split( \" \" );\n\t\t\t\t\t\tif ( tmp[ 1 ] === current ) {\n\n\t\t\t\t\t\t\t// If prev can be converted to accepted input\n\t\t\t\t\t\t\tconv = converters[ prev + \" \" + tmp[ 0 ] ] ||\n\t\t\t\t\t\t\t\tconverters[ \"* \" + tmp[ 0 ] ];\n\t\t\t\t\t\t\tif ( conv ) {\n\n\t\t\t\t\t\t\t\t// Condense equivalence converters\n\t\t\t\t\t\t\t\tif ( conv === true ) {\n\t\t\t\t\t\t\t\t\tconv = converters[ conv2 ];\n\n\t\t\t\t\t\t\t\t// Otherwise, insert the intermediate dataType\n\t\t\t\t\t\t\t\t} else if ( converters[ conv2 ] !== true ) {\n\t\t\t\t\t\t\t\t\tcurrent = tmp[ 0 ];\n\t\t\t\t\t\t\t\t\tdataTypes.unshift( tmp[ 1 ] );\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// Apply converter (if not an equivalence)\n\t\t\t\tif ( conv !== true ) {\n\n\t\t\t\t\t// Unless errors are allowed to bubble, catch and return them\n\t\t\t\t\tif ( conv && s.throws ) {\n\t\t\t\t\t\tresponse = conv( response );\n\t\t\t\t\t} else {\n\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\tresponse = conv( response );\n\t\t\t\t\t\t} catch ( e ) {\n\t\t\t\t\t\t\treturn {\n\t\t\t\t\t\t\t\tstate: \"parsererror\",\n\t\t\t\t\t\t\t\terror: conv ? e : \"No conversion from \" + prev + \" to \" + current\n\t\t\t\t\t\t\t};\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\treturn { state: \"success\", data: response };\n}\n\njQuery.extend( {\n\n\t// Counter for holding the number of active queries\n\tactive: 0,\n\n\t// Last-Modified header cache for next request\n\tlastModified: {},\n\tetag: {},\n\n\tajaxSettings: {\n\t\turl: location.href,\n\t\ttype: \"GET\",\n\t\tisLocal: rlocalProtocol.test( location.protocol ),\n\t\tglobal: true,\n\t\tprocessData: true,\n\t\tasync: true,\n\t\tcontentType: \"application/x-www-form-urlencoded; charset=UTF-8\",\n\n\t\t/*\n\t\ttimeout: 0,\n\t\tdata: null,\n\t\tdataType: null,\n\t\tusername: null,\n\t\tpassword: null,\n\t\tcache: null,\n\t\tthrows: false,\n\t\ttraditional: false,\n\t\theaders: {},\n\t\t*/\n\n\t\taccepts: {\n\t\t\t\"*\": allTypes,\n\t\t\ttext: \"text/plain\",\n\t\t\thtml: \"text/html\",\n\t\t\txml: \"application/xml, text/xml\",\n\t\t\tjson: \"application/json, text/javascript\"\n\t\t},\n\n\t\tcontents: {\n\t\t\txml: /\\bxml\\b/,\n\t\t\thtml: /\\bhtml/,\n\t\t\tjson: /\\bjson\\b/\n\t\t},\n\n\t\tresponseFields: {\n\t\t\txml: \"responseXML\",\n\t\t\ttext: \"responseText\",\n\t\t\tjson: \"responseJSON\"\n\t\t},\n\n\t\t// Data converters\n\t\t// Keys separate source (or catchall \"*\") and destination types with a single space\n\t\tconverters: {\n\n\t\t\t// Convert anything to text\n\t\t\t\"* text\": String,\n\n\t\t\t// Text to html (true = no transformation)\n\t\t\t\"text html\": true,\n\n\t\t\t// Evaluate text as a json expression\n\t\t\t\"text json\": JSON.parse,\n\n\t\t\t// Parse text as xml\n\t\t\t\"text xml\": jQuery.parseXML\n\t\t},\n\n\t\t// For options that shouldn't be deep extended:\n\t\t// you can add your own custom options here if\n\t\t// and when you create one that shouldn't be\n\t\t// deep extended (see ajaxExtend)\n\t\tflatOptions: {\n\t\t\turl: true,\n\t\t\tcontext: true\n\t\t}\n\t},\n\n\t// Creates a full fledged settings object into target\n\t// with both ajaxSettings and settings fields.\n\t// If target is omitted, writes into ajaxSettings.\n\tajaxSetup: function( target, settings ) {\n\t\treturn settings ?\n\n\t\t\t// Building a settings object\n\t\t\tajaxExtend( ajaxExtend( target, jQuery.ajaxSettings ), settings ) :\n\n\t\t\t// Extending ajaxSettings\n\t\t\tajaxExtend( jQuery.ajaxSettings, target );\n\t},\n\n\tajaxPrefilter: addToPrefiltersOrTransports( prefilters ),\n\tajaxTransport: addToPrefiltersOrTransports( transports ),\n\n\t// Main method\n\tajax: function( url, options ) {\n\n\t\t// If url is an object, simulate pre-1.5 signature\n\t\tif ( typeof url === \"object\" ) {\n\t\t\toptions = url;\n\t\t\turl = undefined;\n\t\t}\n\n\t\t// Force options to be an object\n\t\toptions = options || {};\n\n\t\tvar transport,\n\n\t\t\t// URL without anti-cache param\n\t\t\tcacheURL,\n\n\t\t\t// Response headers\n\t\t\tresponseHeadersString,\n\t\t\tresponseHeaders,\n\n\t\t\t// timeout handle\n\t\t\ttimeoutTimer,\n\n\t\t\t// Url cleanup var\n\t\t\turlAnchor,\n\n\t\t\t// Request state (becomes false upon send and true upon completion)\n\t\t\tcompleted,\n\n\t\t\t// To know if global events are to be dispatched\n\t\t\tfireGlobals,\n\n\t\t\t// Loop variable\n\t\t\ti,\n\n\t\t\t// uncached part of the url\n\t\t\tuncached,\n\n\t\t\t// Create the final options object\n\t\t\ts = jQuery.ajaxSetup( {}, options ),\n\n\t\t\t// Callbacks context\n\t\t\tcallbackContext = s.context || s,\n\n\t\t\t// Context for global events is callbackContext if it is a DOM node or jQuery collection\n\t\t\tglobalEventContext = s.context &&\n\t\t\t\t( callbackContext.nodeType || callbackContext.jquery ) ?\n\t\t\t\tjQuery( callbackContext ) :\n\t\t\t\tjQuery.event,\n\n\t\t\t// Deferreds\n\t\t\tdeferred = jQuery.Deferred(),\n\t\t\tcompleteDeferred = jQuery.Callbacks( \"once memory\" ),\n\n\t\t\t// Status-dependent callbacks\n\t\t\tstatusCode = s.statusCode || {},\n\n\t\t\t// Headers (they are sent all at once)\n\t\t\trequestHeaders = {},\n\t\t\trequestHeadersNames = {},\n\n\t\t\t// Default abort message\n\t\t\tstrAbort = \"canceled\",\n\n\t\t\t// Fake xhr\n\t\t\tjqXHR = {\n\t\t\t\treadyState: 0,\n\n\t\t\t\t// Builds headers hashtable if needed\n\t\t\t\tgetResponseHeader: function( key ) {\n\t\t\t\t\tvar match;\n\t\t\t\t\tif ( completed ) {\n\t\t\t\t\t\tif ( !responseHeaders ) {\n\t\t\t\t\t\t\tresponseHeaders = {};\n\t\t\t\t\t\t\twhile ( ( match = rheaders.exec( responseHeadersString ) ) ) {\n\t\t\t\t\t\t\t\tresponseHeaders[ match[ 1 ].toLowerCase() + \" \" ] =\n\t\t\t\t\t\t\t\t\t( responseHeaders[ match[ 1 ].toLowerCase() + \" \" ] || [] )\n\t\t\t\t\t\t\t\t\t\t.concat( match[ 2 ] );\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t\tmatch = responseHeaders[ key.toLowerCase() + \" \" ];\n\t\t\t\t\t}\n\t\t\t\t\treturn match == null ? null : match.join( \", \" );\n\t\t\t\t},\n\n\t\t\t\t// Raw string\n\t\t\t\tgetAllResponseHeaders: function() {\n\t\t\t\t\treturn completed ? responseHeadersString : null;\n\t\t\t\t},\n\n\t\t\t\t// Caches the header\n\t\t\t\tsetRequestHeader: function( name, value ) {\n\t\t\t\t\tif ( completed == null ) {\n\t\t\t\t\t\tname = requestHeadersNames[ name.toLowerCase() ] =\n\t\t\t\t\t\t\trequestHeadersNames[ name.toLowerCase() ] || name;\n\t\t\t\t\t\trequestHeaders[ name ] = value;\n\t\t\t\t\t}\n\t\t\t\t\treturn this;\n\t\t\t\t},\n\n\t\t\t\t// Overrides response content-type header\n\t\t\t\toverrideMimeType: function( type ) {\n\t\t\t\t\tif ( completed == null ) {\n\t\t\t\t\t\ts.mimeType = type;\n\t\t\t\t\t}\n\t\t\t\t\treturn this;\n\t\t\t\t},\n\n\t\t\t\t// Status-dependent callbacks\n\t\t\t\tstatusCode: function( map ) {\n\t\t\t\t\tvar code;\n\t\t\t\t\tif ( map ) {\n\t\t\t\t\t\tif ( completed ) {\n\n\t\t\t\t\t\t\t// Execute the appropriate callbacks\n\t\t\t\t\t\t\tjqXHR.always( map[ jqXHR.status ] );\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t// Lazy-add the new callbacks in a way that preserves old ones\n\t\t\t\t\t\t\tfor ( code in map ) {\n\t\t\t\t\t\t\t\tstatusCode[ code ] = [ statusCode[ code ], map[ code ] ];\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t\treturn this;\n\t\t\t\t},\n\n\t\t\t\t// Cancel the request\n\t\t\t\tabort: function( statusText ) {\n\t\t\t\t\tvar finalText = statusText || strAbort;\n\t\t\t\t\tif ( transport ) {\n\t\t\t\t\t\ttransport.abort( finalText );\n\t\t\t\t\t}\n\t\t\t\t\tdone( 0, finalText );\n\t\t\t\t\treturn this;\n\t\t\t\t}\n\t\t\t};\n\n\t\t// Attach deferreds\n\t\tdeferred.promise( jqXHR );\n\n\t\t// Add protocol if not provided (prefilters might expect it)\n\t\t// Handle falsy url in the settings object (trac-10093: consistency with old signature)\n\t\t// We also use the url parameter if available\n\t\ts.url = ( ( url || s.url || location.href ) + \"\" )\n\t\t\t.replace( rprotocol, location.protocol + \"//\" );\n\n\t\t// Alias method option to type as per ticket trac-12004\n\t\ts.type = options.method || options.type || s.method || s.type;\n\n\t\t// Extract dataTypes list\n\t\ts.dataTypes = ( s.dataType || \"*\" ).toLowerCase().match( rnothtmlwhite ) || [ \"\" ];\n\n\t\t// A cross-domain request is in order when the origin doesn't match the current origin.\n\t\tif ( s.crossDomain == null ) {\n\t\t\turlAnchor = document.createElement( \"a\" );\n\n\t\t\t// Support: IE <=8 - 11, Edge 12 - 15\n\t\t\t// IE throws exception on accessing the href property if url is malformed,\n\t\t\t// e.g. http://example.com:80x/\n\t\t\ttry {\n\t\t\t\turlAnchor.href = s.url;\n\n\t\t\t\t// Support: IE <=8 - 11 only\n\t\t\t\t// Anchor's host property isn't correctly set when s.url is relative\n\t\t\t\turlAnchor.href = urlAnchor.href;\n\t\t\t\ts.crossDomain = originAnchor.protocol + \"//\" + originAnchor.host !==\n\t\t\t\t\turlAnchor.protocol + \"//\" + urlAnchor.host;\n\t\t\t} catch ( e ) {\n\n\t\t\t\t// If there is an error parsing the URL, assume it is crossDomain,\n\t\t\t\t// it can be rejected by the transport if it is invalid\n\t\t\t\ts.crossDomain = true;\n\t\t\t}\n\t\t}\n\n\t\t// Convert data if not already a string\n\t\tif ( s.data && s.processData && typeof s.data !== \"string\" ) {\n\t\t\ts.data = jQuery.param( s.data, s.traditional );\n\t\t}\n\n\t\t// Apply prefilters\n\t\tinspectPrefiltersOrTransports( prefilters, s, options, jqXHR );\n\n\t\t// If request was aborted inside a prefilter, stop there\n\t\tif ( completed ) {\n\t\t\treturn jqXHR;\n\t\t}\n\n\t\t// We can fire global events as of now if asked to\n\t\t// Don't fire events if jQuery.event is undefined in an AMD-usage scenario (trac-15118)\n\t\tfireGlobals = jQuery.event && s.global;\n\n\t\t// Watch for a new set of requests\n\t\tif ( fireGlobals && jQuery.active++ === 0 ) {\n\t\t\tjQuery.event.trigger( \"ajaxStart\" );\n\t\t}\n\n\t\t// Uppercase the type\n\t\ts.type = s.type.toUpperCase();\n\n\t\t// Determine if request has content\n\t\ts.hasContent = !rnoContent.test( s.type );\n\n\t\t// Save the URL in case we're toying with the If-Modified-Since\n\t\t// and/or If-None-Match header later on\n\t\t// Remove hash to simplify url manipulation\n\t\tcacheURL = s.url.replace( rhash, \"\" );\n\n\t\t// More options handling for requests with no content\n\t\tif ( !s.hasContent ) {\n\n\t\t\t// Remember the hash so we can put it back\n\t\t\tuncached = s.url.slice( cacheURL.length );\n\n\t\t\t// If data is available and should be processed, append data to url\n\t\t\tif ( s.data && ( s.processData || typeof s.data === \"string\" ) ) {\n\t\t\t\tcacheURL += ( rquery.test( cacheURL ) ? \"&\" : \"?\" ) + s.data;\n\n\t\t\t\t// trac-9682: remove data so that it's not used in an eventual retry\n\t\t\t\tdelete s.data;\n\t\t\t}\n\n\t\t\t// Add or update anti-cache param if needed\n\t\t\tif ( s.cache === false ) {\n\t\t\t\tcacheURL = cacheURL.replace( rantiCache, \"$1\" );\n\t\t\t\tuncached = ( rquery.test( cacheURL ) ? \"&\" : \"?\" ) + \"_=\" + ( nonce.guid++ ) +\n\t\t\t\t\tuncached;\n\t\t\t}\n\n\t\t\t// Put hash and anti-cache on the URL that will be requested (gh-1732)\n\t\t\ts.url = cacheURL + uncached;\n\n\t\t// Change '%20' to '+' if this is encoded form body content (gh-2658)\n\t\t} else if ( s.data && s.processData &&\n\t\t\t( s.contentType || \"\" ).indexOf( \"application/x-www-form-urlencoded\" ) === 0 ) {\n\t\t\ts.data = s.data.replace( r20, \"+\" );\n\t\t}\n\n\t\t// Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.\n\t\tif ( s.ifModified ) {\n\t\t\tif ( jQuery.lastModified[ cacheURL ] ) {\n\t\t\t\tjqXHR.setRequestHeader( \"If-Modified-Since\", jQuery.lastModified[ cacheURL ] );\n\t\t\t}\n\t\t\tif ( jQuery.etag[ cacheURL ] ) {\n\t\t\t\tjqXHR.setRequestHeader( \"If-None-Match\", jQuery.etag[ cacheURL ] );\n\t\t\t}\n\t\t}\n\n\t\t// Set the correct header, if data is being sent\n\t\tif ( s.data && s.hasContent && s.contentType !== false || options.contentType ) {\n\t\t\tjqXHR.setRequestHeader( \"Content-Type\", s.contentType );\n\t\t}\n\n\t\t// Set the Accepts header for the server, depending on the dataType\n\t\tjqXHR.setRequestHeader(\n\t\t\t\"Accept\",\n\t\t\ts.dataTypes[ 0 ] && s.accepts[ s.dataTypes[ 0 ] ] ?\n\t\t\t\ts.accepts[ s.dataTypes[ 0 ] ] +\n\t\t\t\t\t( s.dataTypes[ 0 ] !== \"*\" ? \", \" + allTypes + \"; q=0.01\" : \"\" ) :\n\t\t\t\ts.accepts[ \"*\" ]\n\t\t);\n\n\t\t// Check for headers option\n\t\tfor ( i in s.headers ) {\n\t\t\tjqXHR.setRequestHeader( i, s.headers[ i ] );\n\t\t}\n\n\t\t// Allow custom headers/mimetypes and early abort\n\t\tif ( s.beforeSend &&\n\t\t\t( s.beforeSend.call( callbackContext, jqXHR, s ) === false || completed ) ) {\n\n\t\t\t// Abort if not done already and return\n\t\t\treturn jqXHR.abort();\n\t\t}\n\n\t\t// Aborting is no longer a cancellation\n\t\tstrAbort = \"abort\";\n\n\t\t// Install callbacks on deferreds\n\t\tcompleteDeferred.add( s.complete );\n\t\tjqXHR.done( s.success );\n\t\tjqXHR.fail( s.error );\n\n\t\t// Get transport\n\t\ttransport = inspectPrefiltersOrTransports( transports, s, options, jqXHR );\n\n\t\t// If no transport, we auto-abort\n\t\tif ( !transport ) {\n\t\t\tdone( -1, \"No Transport\" );\n\t\t} else {\n\t\t\tjqXHR.readyState = 1;\n\n\t\t\t// Send global event\n\t\t\tif ( fireGlobals ) {\n\t\t\t\tglobalEventContext.trigger( \"ajaxSend\", [ jqXHR, s ] );\n\t\t\t}\n\n\t\t\t// If request was aborted inside ajaxSend, stop there\n\t\t\tif ( completed ) {\n\t\t\t\treturn jqXHR;\n\t\t\t}\n\n\t\t\t// Timeout\n\t\t\tif ( s.async && s.timeout > 0 ) {\n\t\t\t\ttimeoutTimer = window.setTimeout( function() {\n\t\t\t\t\tjqXHR.abort( \"timeout\" );\n\t\t\t\t}, s.timeout );\n\t\t\t}\n\n\t\t\ttry {\n\t\t\t\tcompleted = false;\n\t\t\t\ttransport.send( requestHeaders, done );\n\t\t\t} catch ( e ) {\n\n\t\t\t\t// Rethrow post-completion exceptions\n\t\t\t\tif ( completed ) {\n\t\t\t\t\tthrow e;\n\t\t\t\t}\n\n\t\t\t\t// Propagate others as results\n\t\t\t\tdone( -1, e );\n\t\t\t}\n\t\t}\n\n\t\t// Callback for when everything is done\n\t\tfunction done( status, nativeStatusText, responses, headers ) {\n\t\t\tvar isSuccess, success, error, response, modified,\n\t\t\t\tstatusText = nativeStatusText;\n\n\t\t\t// Ignore repeat invocations\n\t\t\tif ( completed ) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tcompleted = true;\n\n\t\t\t// Clear timeout if it exists\n\t\t\tif ( timeoutTimer ) {\n\t\t\t\twindow.clearTimeout( timeoutTimer );\n\t\t\t}\n\n\t\t\t// Dereference transport for early garbage collection\n\t\t\t// (no matter how long the jqXHR object will be used)\n\t\t\ttransport = undefined;\n\n\t\t\t// Cache response headers\n\t\t\tresponseHeadersString = headers || \"\";\n\n\t\t\t// Set readyState\n\t\t\tjqXHR.readyState = status > 0 ? 4 : 0;\n\n\t\t\t// Determine if successful\n\t\t\tisSuccess = status >= 200 && status < 300 || status === 304;\n\n\t\t\t// Get response data\n\t\t\tif ( responses ) {\n\t\t\t\tresponse = ajaxHandleResponses( s, jqXHR, responses );\n\t\t\t}\n\n\t\t\t// Use a noop converter for missing script but not if jsonp\n\t\t\tif ( !isSuccess &&\n\t\t\t\tjQuery.inArray( \"script\", s.dataTypes ) > -1 &&\n\t\t\t\tjQuery.inArray( \"json\", s.dataTypes ) < 0 ) {\n\t\t\t\ts.converters[ \"text script\" ] = function() {};\n\t\t\t}\n\n\t\t\t// Convert no matter what (that way responseXXX fields are always set)\n\t\t\tresponse = ajaxConvert( s, response, jqXHR, isSuccess );\n\n\t\t\t// If successful, handle type chaining\n\t\t\tif ( isSuccess ) {\n\n\t\t\t\t// Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.\n\t\t\t\tif ( s.ifModified ) {\n\t\t\t\t\tmodified = jqXHR.getResponseHeader( \"Last-Modified\" );\n\t\t\t\t\tif ( modified ) {\n\t\t\t\t\t\tjQuery.lastModified[ cacheURL ] = modified;\n\t\t\t\t\t}\n\t\t\t\t\tmodified = jqXHR.getResponseHeader( \"etag\" );\n\t\t\t\t\tif ( modified ) {\n\t\t\t\t\t\tjQuery.etag[ cacheURL ] = modified;\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// if no content\n\t\t\t\tif ( status === 204 || s.type === \"HEAD\" ) {\n\t\t\t\t\tstatusText = \"nocontent\";\n\n\t\t\t\t// if not modified\n\t\t\t\t} else if ( status === 304 ) {\n\t\t\t\t\tstatusText = \"notmodified\";\n\n\t\t\t\t// If we have data, let's convert it\n\t\t\t\t} else {\n\t\t\t\t\tstatusText = response.state;\n\t\t\t\t\tsuccess = response.data;\n\t\t\t\t\terror = response.error;\n\t\t\t\t\tisSuccess = !error;\n\t\t\t\t}\n\t\t\t} else {\n\n\t\t\t\t// Extract error from statusText and normalize for non-aborts\n\t\t\t\terror = statusText;\n\t\t\t\tif ( status || !statusText ) {\n\t\t\t\t\tstatusText = \"error\";\n\t\t\t\t\tif ( status < 0 ) {\n\t\t\t\t\t\tstatus = 0;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Set data for the fake xhr object\n\t\t\tjqXHR.status = status;\n\t\t\tjqXHR.statusText = ( nativeStatusText || statusText ) + \"\";\n\n\t\t\t// Success/Error\n\t\t\tif ( isSuccess ) {\n\t\t\t\tdeferred.resolveWith( callbackContext, [ success, statusText, jqXHR ] );\n\t\t\t} else {\n\t\t\t\tdeferred.rejectWith( callbackContext, [ jqXHR, statusText, error ] );\n\t\t\t}\n\n\t\t\t// Status-dependent callbacks\n\t\t\tjqXHR.statusCode( statusCode );\n\t\t\tstatusCode = undefined;\n\n\t\t\tif ( fireGlobals ) {\n\t\t\t\tglobalEventContext.trigger( isSuccess ? \"ajaxSuccess\" : \"ajaxError\",\n\t\t\t\t\t[ jqXHR, s, isSuccess ? success : error ] );\n\t\t\t}\n\n\t\t\t// Complete\n\t\t\tcompleteDeferred.fireWith( callbackContext, [ jqXHR, statusText ] );\n\n\t\t\tif ( fireGlobals ) {\n\t\t\t\tglobalEventContext.trigger( \"ajaxComplete\", [ jqXHR, s ] );\n\n\t\t\t\t// Handle the global AJAX counter\n\t\t\t\tif ( !( --jQuery.active ) ) {\n\t\t\t\t\tjQuery.event.trigger( \"ajaxStop\" );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn jqXHR;\n\t},\n\n\tgetJSON: function( url, data, callback ) {\n\t\treturn jQuery.get( url, data, callback, \"json\" );\n\t},\n\n\tgetScript: function( url, callback ) {\n\t\treturn jQuery.get( url, undefined, callback, \"script\" );\n\t}\n} );\n\njQuery.each( [ \"get\", \"post\" ], function( _i, method ) {\n\tjQuery[ method ] = function( url, data, callback, type ) {\n\n\t\t// Shift arguments if data argument was omitted\n\t\tif ( isFunction( data ) ) {\n\t\t\ttype = type || callback;\n\t\t\tcallback = data;\n\t\t\tdata = undefined;\n\t\t}\n\n\t\t// The url can be an options object (which then must have .url)\n\t\treturn jQuery.ajax( jQuery.extend( {\n\t\t\turl: url,\n\t\t\ttype: method,\n\t\t\tdataType: type,\n\t\t\tdata: data,\n\t\t\tsuccess: callback\n\t\t}, jQuery.isPlainObject( url ) && url ) );\n\t};\n} );\n\njQuery.ajaxPrefilter( function( s ) {\n\tvar i;\n\tfor ( i in s.headers ) {\n\t\tif ( i.toLowerCase() === \"content-type\" ) {\n\t\t\ts.contentType = s.headers[ i ] || \"\";\n\t\t}\n\t}\n} );\n\n\njQuery._evalUrl = function( url, options, doc ) {\n\treturn jQuery.ajax( {\n\t\turl: url,\n\n\t\t// Make this explicit, since user can override this through ajaxSetup (trac-11264)\n\t\ttype: \"GET\",\n\t\tdataType: \"script\",\n\t\tcache: true,\n\t\tasync: false,\n\t\tglobal: false,\n\n\t\t// Only evaluate the response if it is successful (gh-4126)\n\t\t// dataFilter is not invoked for failure responses, so using it instead\n\t\t// of the default converter is kludgy but it works.\n\t\tconverters: {\n\t\t\t\"text script\": function() {}\n\t\t},\n\t\tdataFilter: function( response ) {\n\t\t\tjQuery.globalEval( response, options, doc );\n\t\t}\n\t} );\n};\n\n\njQuery.fn.extend( {\n\twrapAll: function( html ) {\n\t\tvar wrap;\n\n\t\tif ( this[ 0 ] ) {\n\t\t\tif ( isFunction( html ) ) {\n\t\t\t\thtml = html.call( this[ 0 ] );\n\t\t\t}\n\n\t\t\t// The elements to wrap the target around\n\t\t\twrap = jQuery( html, this[ 0 ].ownerDocument ).eq( 0 ).clone( true );\n\n\t\t\tif ( this[ 0 ].parentNode ) {\n\t\t\t\twrap.insertBefore( this[ 0 ] );\n\t\t\t}\n\n\t\t\twrap.map( function() {\n\t\t\t\tvar elem = this;\n\n\t\t\t\twhile ( elem.firstElementChild ) {\n\t\t\t\t\telem = elem.firstElementChild;\n\t\t\t\t}\n\n\t\t\t\treturn elem;\n\t\t\t} ).append( this );\n\t\t}\n\n\t\treturn this;\n\t},\n\n\twrapInner: function( html ) {\n\t\tif ( isFunction( html ) ) {\n\t\t\treturn this.each( function( i ) {\n\t\t\t\tjQuery( this ).wrapInner( html.call( this, i ) );\n\t\t\t} );\n\t\t}\n\n\t\treturn this.each( function() {\n\t\t\tvar self = jQuery( this ),\n\t\t\t\tcontents = self.contents();\n\n\t\t\tif ( contents.length ) {\n\t\t\t\tcontents.wrapAll( html );\n\n\t\t\t} else {\n\t\t\t\tself.append( html );\n\t\t\t}\n\t\t} );\n\t},\n\n\twrap: function( html ) {\n\t\tvar htmlIsFunction = isFunction( html );\n\n\t\treturn this.each( function( i ) {\n\t\t\tjQuery( this ).wrapAll( htmlIsFunction ? html.call( this, i ) : html );\n\t\t} );\n\t},\n\n\tunwrap: function( selector ) {\n\t\tthis.parent( selector ).not( \"body\" ).each( function() {\n\t\t\tjQuery( this ).replaceWith( this.childNodes );\n\t\t} );\n\t\treturn this;\n\t}\n} );\n\n\njQuery.expr.pseudos.hidden = function( elem ) {\n\treturn !jQuery.expr.pseudos.visible( elem );\n};\njQuery.expr.pseudos.visible = function( elem ) {\n\treturn !!( elem.offsetWidth || elem.offsetHeight || elem.getClientRects().length );\n};\n\n\n\n\njQuery.ajaxSettings.xhr = function() {\n\ttry {\n\t\treturn new window.XMLHttpRequest();\n\t} catch ( e ) {}\n};\n\nvar xhrSuccessStatus = {\n\n\t\t// File protocol always yields status code 0, assume 200\n\t\t0: 200,\n\n\t\t// Support: IE <=9 only\n\t\t// trac-1450: sometimes IE returns 1223 when it should be 204\n\t\t1223: 204\n\t},\n\txhrSupported = jQuery.ajaxSettings.xhr();\n\nsupport.cors = !!xhrSupported && ( \"withCredentials\" in xhrSupported );\nsupport.ajax = xhrSupported = !!xhrSupported;\n\njQuery.ajaxTransport( function( options ) {\n\tvar callback, errorCallback;\n\n\t// Cross domain only allowed if supported through XMLHttpRequest\n\tif ( support.cors || xhrSupported && !options.crossDomain ) {\n\t\treturn {\n\t\t\tsend: function( headers, complete ) {\n\t\t\t\tvar i,\n\t\t\t\t\txhr = options.xhr();\n\n\t\t\t\txhr.open(\n\t\t\t\t\toptions.type,\n\t\t\t\t\toptions.url,\n\t\t\t\t\toptions.async,\n\t\t\t\t\toptions.username,\n\t\t\t\t\toptions.password\n\t\t\t\t);\n\n\t\t\t\t// Apply custom fields if provided\n\t\t\t\tif ( options.xhrFields ) {\n\t\t\t\t\tfor ( i in options.xhrFields ) {\n\t\t\t\t\t\txhr[ i ] = options.xhrFields[ i ];\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// Override mime type if needed\n\t\t\t\tif ( options.mimeType && xhr.overrideMimeType ) {\n\t\t\t\t\txhr.overrideMimeType( options.mimeType );\n\t\t\t\t}\n\n\t\t\t\t// X-Requested-With header\n\t\t\t\t// For cross-domain requests, seeing as conditions for a preflight are\n\t\t\t\t// akin to a jigsaw puzzle, we simply never set it to be sure.\n\t\t\t\t// (it can always be set on a per-request basis or even using ajaxSetup)\n\t\t\t\t// For same-domain requests, won't change header if already provided.\n\t\t\t\tif ( !options.crossDomain && !headers[ \"X-Requested-With\" ] ) {\n\t\t\t\t\theaders[ \"X-Requested-With\" ] = \"XMLHttpRequest\";\n\t\t\t\t}\n\n\t\t\t\t// Set headers\n\t\t\t\tfor ( i in headers ) {\n\t\t\t\t\txhr.setRequestHeader( i, headers[ i ] );\n\t\t\t\t}\n\n\t\t\t\t// Callback\n\t\t\t\tcallback = function( type ) {\n\t\t\t\t\treturn function() {\n\t\t\t\t\t\tif ( callback ) {\n\t\t\t\t\t\t\tcallback = errorCallback = xhr.onload =\n\t\t\t\t\t\t\t\txhr.onerror = xhr.onabort = xhr.ontimeout =\n\t\t\t\t\t\t\t\t\txhr.onreadystatechange = null;\n\n\t\t\t\t\t\t\tif ( type === \"abort\" ) {\n\t\t\t\t\t\t\t\txhr.abort();\n\t\t\t\t\t\t\t} else if ( type === \"error\" ) {\n\n\t\t\t\t\t\t\t\t// Support: IE <=9 only\n\t\t\t\t\t\t\t\t// On a manual native abort, IE9 throws\n\t\t\t\t\t\t\t\t// errors on any property access that is not readyState\n\t\t\t\t\t\t\t\tif ( typeof xhr.status !== \"number\" ) {\n\t\t\t\t\t\t\t\t\tcomplete( 0, \"error\" );\n\t\t\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\t\t\tcomplete(\n\n\t\t\t\t\t\t\t\t\t\t// File: protocol always yields status 0; see trac-8605, trac-14207\n\t\t\t\t\t\t\t\t\t\txhr.status,\n\t\t\t\t\t\t\t\t\t\txhr.statusText\n\t\t\t\t\t\t\t\t\t);\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\t\tcomplete(\n\t\t\t\t\t\t\t\t\txhrSuccessStatus[ xhr.status ] || xhr.status,\n\t\t\t\t\t\t\t\t\txhr.statusText,\n\n\t\t\t\t\t\t\t\t\t// Support: IE <=9 only\n\t\t\t\t\t\t\t\t\t// IE9 has no XHR2 but throws on binary (trac-11426)\n\t\t\t\t\t\t\t\t\t// For XHR2 non-text, let the caller handle it (gh-2498)\n\t\t\t\t\t\t\t\t\t( xhr.responseType || \"text\" ) !== \"text\" ||\n\t\t\t\t\t\t\t\t\ttypeof xhr.responseText !== \"string\" ?\n\t\t\t\t\t\t\t\t\t\t{ binary: xhr.response } :\n\t\t\t\t\t\t\t\t\t\t{ text: xhr.responseText },\n\t\t\t\t\t\t\t\t\txhr.getAllResponseHeaders()\n\t\t\t\t\t\t\t\t);\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t};\n\t\t\t\t};\n\n\t\t\t\t// Listen to events\n\t\t\t\txhr.onload = callback();\n\t\t\t\terrorCallback = xhr.onerror = xhr.ontimeout = callback( \"error\" );\n\n\t\t\t\t// Support: IE 9 only\n\t\t\t\t// Use onreadystatechange to replace onabort\n\t\t\t\t// to handle uncaught aborts\n\t\t\t\tif ( xhr.onabort !== undefined ) {\n\t\t\t\t\txhr.onabort = errorCallback;\n\t\t\t\t} else {\n\t\t\t\t\txhr.onreadystatechange = function() {\n\n\t\t\t\t\t\t// Check readyState before timeout as it changes\n\t\t\t\t\t\tif ( xhr.readyState === 4 ) {\n\n\t\t\t\t\t\t\t// Allow onerror to be called first,\n\t\t\t\t\t\t\t// but that will not handle a native abort\n\t\t\t\t\t\t\t// Also, save errorCallback to a variable\n\t\t\t\t\t\t\t// as xhr.onerror cannot be accessed\n\t\t\t\t\t\t\twindow.setTimeout( function() {\n\t\t\t\t\t\t\t\tif ( callback ) {\n\t\t\t\t\t\t\t\t\terrorCallback();\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t} );\n\t\t\t\t\t\t}\n\t\t\t\t\t};\n\t\t\t\t}\n\n\t\t\t\t// Create the abort callback\n\t\t\t\tcallback = callback( \"abort\" );\n\n\t\t\t\ttry {\n\n\t\t\t\t\t// Do send the request (this may raise an exception)\n\t\t\t\t\txhr.send( options.hasContent && options.data || null );\n\t\t\t\t} catch ( e ) {\n\n\t\t\t\t\t// trac-14683: Only rethrow if this hasn't been notified as an error yet\n\t\t\t\t\tif ( callback ) {\n\t\t\t\t\t\tthrow e;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t},\n\n\t\t\tabort: function() {\n\t\t\t\tif ( callback ) {\n\t\t\t\t\tcallback();\n\t\t\t\t}\n\t\t\t}\n\t\t};\n\t}\n} );\n\n\n\n\n// Prevent auto-execution of scripts when no explicit dataType was provided (See gh-2432)\njQuery.ajaxPrefilter( function( s ) {\n\tif ( s.crossDomain ) {\n\t\ts.contents.script = false;\n\t}\n} );\n\n// Install script dataType\njQuery.ajaxSetup( {\n\taccepts: {\n\t\tscript: \"text/javascript, application/javascript, \" +\n\t\t\t\"application/ecmascript, application/x-ecmascript\"\n\t},\n\tcontents: {\n\t\tscript: /\\b(?:java|ecma)script\\b/\n\t},\n\tconverters: {\n\t\t\"text script\": function( text ) {\n\t\t\tjQuery.globalEval( text );\n\t\t\treturn text;\n\t\t}\n\t}\n} );\n\n// Handle cache's special case and crossDomain\njQuery.ajaxPrefilter( \"script\", function( s ) {\n\tif ( s.cache === undefined ) {\n\t\ts.cache = false;\n\t}\n\tif ( s.crossDomain ) {\n\t\ts.type = \"GET\";\n\t}\n} );\n\n// Bind script tag hack transport\njQuery.ajaxTransport( \"script\", function( s ) {\n\n\t// This transport only deals with cross domain or forced-by-attrs requests\n\tif ( s.crossDomain || s.scriptAttrs ) {\n\t\tvar script, callback;\n\t\treturn {\n\t\t\tsend: function( _, complete ) {\n\t\t\t\tscript = jQuery( \"\n","\n\n\n","\n\n\n","\n\n\n\n\n","/**\n * @license\n * Lodash \n * Copyright OpenJS Foundation and other contributors \n * Released under MIT license \n * Based on Underscore.js 1.8.3 \n * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors\n */\n;(function() {\n\n /** Used as a safe reference for `undefined` in pre-ES5 environments. */\n var undefined;\n\n /** Used as the semantic version number. */\n var VERSION = '4.17.21';\n\n /** Used as the size to enable large array optimizations. */\n var LARGE_ARRAY_SIZE = 200;\n\n /** Error message constants. */\n var CORE_ERROR_TEXT = 'Unsupported core-js use. Try https://npms.io/search?q=ponyfill.',\n FUNC_ERROR_TEXT = 'Expected a function',\n INVALID_TEMPL_VAR_ERROR_TEXT = 'Invalid `variable` option passed into `_.template`';\n\n /** Used to stand-in for `undefined` hash values. */\n var HASH_UNDEFINED = '__lodash_hash_undefined__';\n\n /** Used as the maximum memoize cache size. */\n var MAX_MEMOIZE_SIZE = 500;\n\n /** Used as the internal argument placeholder. */\n var PLACEHOLDER = '__lodash_placeholder__';\n\n /** Used to compose bitmasks for cloning. */\n var CLONE_DEEP_FLAG = 1,\n CLONE_FLAT_FLAG = 2,\n CLONE_SYMBOLS_FLAG = 4;\n\n /** Used to compose bitmasks for value comparisons. */\n var COMPARE_PARTIAL_FLAG = 1,\n COMPARE_UNORDERED_FLAG = 2;\n\n /** Used to compose bitmasks for function metadata. */\n var WRAP_BIND_FLAG = 1,\n WRAP_BIND_KEY_FLAG = 2,\n WRAP_CURRY_BOUND_FLAG = 4,\n WRAP_CURRY_FLAG = 8,\n WRAP_CURRY_RIGHT_FLAG = 16,\n WRAP_PARTIAL_FLAG = 32,\n WRAP_PARTIAL_RIGHT_FLAG = 64,\n WRAP_ARY_FLAG = 128,\n WRAP_REARG_FLAG = 256,\n WRAP_FLIP_FLAG = 512;\n\n /** Used as default options for `_.truncate`. */\n var DEFAULT_TRUNC_LENGTH = 30,\n DEFAULT_TRUNC_OMISSION = '...';\n\n /** Used to detect hot functions by number of calls within a span of milliseconds. */\n var HOT_COUNT = 800,\n HOT_SPAN = 16;\n\n /** Used to indicate the type of lazy iteratees. */\n var LAZY_FILTER_FLAG = 1,\n LAZY_MAP_FLAG = 2,\n LAZY_WHILE_FLAG = 3;\n\n /** Used as references for various `Number` constants. */\n var INFINITY = 1 / 0,\n MAX_SAFE_INTEGER = 9007199254740991,\n MAX_INTEGER = 1.7976931348623157e+308,\n NAN = 0 / 0;\n\n /** Used as references for the maximum length and index of an array. */\n var MAX_ARRAY_LENGTH = 4294967295,\n MAX_ARRAY_INDEX = MAX_ARRAY_LENGTH - 1,\n HALF_MAX_ARRAY_LENGTH = MAX_ARRAY_LENGTH >>> 1;\n\n /** Used to associate wrap methods with their bit flags. */\n var wrapFlags = [\n ['ary', WRAP_ARY_FLAG],\n ['bind', WRAP_BIND_FLAG],\n ['bindKey', WRAP_BIND_KEY_FLAG],\n ['curry', WRAP_CURRY_FLAG],\n ['curryRight', WRAP_CURRY_RIGHT_FLAG],\n ['flip', WRAP_FLIP_FLAG],\n ['partial', WRAP_PARTIAL_FLAG],\n ['partialRight', WRAP_PARTIAL_RIGHT_FLAG],\n ['rearg', WRAP_REARG_FLAG]\n ];\n\n /** `Object#toString` result references. */\n var argsTag = '[object Arguments]',\n arrayTag = '[object Array]',\n asyncTag = '[object AsyncFunction]',\n boolTag = '[object Boolean]',\n dateTag = '[object Date]',\n domExcTag = '[object DOMException]',\n errorTag = '[object Error]',\n funcTag = '[object Function]',\n genTag = '[object GeneratorFunction]',\n mapTag = '[object Map]',\n numberTag = '[object Number]',\n nullTag = '[object Null]',\n objectTag = '[object Object]',\n promiseTag = '[object Promise]',\n proxyTag = '[object Proxy]',\n regexpTag = '[object RegExp]',\n setTag = '[object Set]',\n stringTag = '[object String]',\n symbolTag = '[object Symbol]',\n undefinedTag = '[object Undefined]',\n weakMapTag = '[object WeakMap]',\n weakSetTag = '[object WeakSet]';\n\n var arrayBufferTag = '[object ArrayBuffer]',\n dataViewTag = '[object DataView]',\n float32Tag = '[object Float32Array]',\n float64Tag = '[object Float64Array]',\n int8Tag = '[object Int8Array]',\n int16Tag = '[object Int16Array]',\n int32Tag = '[object Int32Array]',\n uint8Tag = '[object Uint8Array]',\n uint8ClampedTag = '[object Uint8ClampedArray]',\n uint16Tag = '[object Uint16Array]',\n uint32Tag = '[object Uint32Array]';\n\n /** Used to match empty string literals in compiled template source. */\n var reEmptyStringLeading = /\\b__p \\+= '';/g,\n reEmptyStringMiddle = /\\b(__p \\+=) '' \\+/g,\n reEmptyStringTrailing = /(__e\\(.*?\\)|\\b__t\\)) \\+\\n'';/g;\n\n /** Used to match HTML entities and HTML characters. */\n var reEscapedHtml = /&(?:amp|lt|gt|quot|#39);/g,\n reUnescapedHtml = /[&<>\"']/g,\n reHasEscapedHtml = RegExp(reEscapedHtml.source),\n reHasUnescapedHtml = RegExp(reUnescapedHtml.source);\n\n /** Used to match template delimiters. */\n var reEscape = /<%-([\\s\\S]+?)%>/g,\n reEvaluate = /<%([\\s\\S]+?)%>/g,\n reInterpolate = /<%=([\\s\\S]+?)%>/g;\n\n /** Used to match property names within property paths. */\n var reIsDeepProp = /\\.|\\[(?:[^[\\]]*|([\"'])(?:(?!\\1)[^\\\\]|\\\\.)*?\\1)\\]/,\n reIsPlainProp = /^\\w*$/,\n rePropName = /[^.[\\]]+|\\[(?:(-?\\d+(?:\\.\\d+)?)|([\"'])((?:(?!\\2)[^\\\\]|\\\\.)*?)\\2)\\]|(?=(?:\\.|\\[\\])(?:\\.|\\[\\]|$))/g;\n\n /**\n * Used to match `RegExp`\n * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns).\n */\n var reRegExpChar = /[\\\\^$.*+?()[\\]{}|]/g,\n reHasRegExpChar = RegExp(reRegExpChar.source);\n\n /** Used to match leading whitespace. */\n var reTrimStart = /^\\s+/;\n\n /** Used to match a single whitespace character. */\n var reWhitespace = /\\s/;\n\n /** Used to match wrap detail comments. */\n var reWrapComment = /\\{(?:\\n\\/\\* \\[wrapped with .+\\] \\*\\/)?\\n?/,\n reWrapDetails = /\\{\\n\\/\\* \\[wrapped with (.+)\\] \\*/,\n reSplitDetails = /,? & /;\n\n /** Used to match words composed of alphanumeric characters. */\n var reAsciiWord = /[^\\x00-\\x2f\\x3a-\\x40\\x5b-\\x60\\x7b-\\x7f]+/g;\n\n /**\n * Used to validate the `validate` option in `_.template` variable.\n *\n * Forbids characters which could potentially change the meaning of the function argument definition:\n * - \"(),\" (modification of function parameters)\n * - \"=\" (default value)\n * - \"[]{}\" (destructuring of function parameters)\n * - \"/\" (beginning of a comment)\n * - whitespace\n */\n var reForbiddenIdentifierChars = /[()=,{}\\[\\]\\/\\s]/;\n\n /** Used to match backslashes in property paths. */\n var reEscapeChar = /\\\\(\\\\)?/g;\n\n /**\n * Used to match\n * [ES template delimiters](http://ecma-international.org/ecma-262/7.0/#sec-template-literal-lexical-components).\n */\n var reEsTemplate = /\\$\\{([^\\\\}]*(?:\\\\.[^\\\\}]*)*)\\}/g;\n\n /** Used to match `RegExp` flags from their coerced string values. */\n var reFlags = /\\w*$/;\n\n /** Used to detect bad signed hexadecimal string values. */\n var reIsBadHex = /^[-+]0x[0-9a-f]+$/i;\n\n /** Used to detect binary string values. */\n var reIsBinary = /^0b[01]+$/i;\n\n /** Used to detect host constructors (Safari). */\n var reIsHostCtor = /^\\[object .+?Constructor\\]$/;\n\n /** Used to detect octal string values. */\n var reIsOctal = /^0o[0-7]+$/i;\n\n /** Used to detect unsigned integer values. */\n var reIsUint = /^(?:0|[1-9]\\d*)$/;\n\n /** Used to match Latin Unicode letters (excluding mathematical operators). */\n var reLatin = /[\\xc0-\\xd6\\xd8-\\xf6\\xf8-\\xff\\u0100-\\u017f]/g;\n\n /** Used to ensure capturing order of template delimiters. */\n var reNoMatch = /($^)/;\n\n /** Used to match unescaped characters in compiled string literals. */\n var reUnescapedString = /['\\n\\r\\u2028\\u2029\\\\]/g;\n\n /** Used to compose unicode character classes. */\n var rsAstralRange = '\\\\ud800-\\\\udfff',\n rsComboMarksRange = '\\\\u0300-\\\\u036f',\n reComboHalfMarksRange = '\\\\ufe20-\\\\ufe2f',\n rsComboSymbolsRange = '\\\\u20d0-\\\\u20ff',\n rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange,\n rsDingbatRange = '\\\\u2700-\\\\u27bf',\n rsLowerRange = 'a-z\\\\xdf-\\\\xf6\\\\xf8-\\\\xff',\n rsMathOpRange = '\\\\xac\\\\xb1\\\\xd7\\\\xf7',\n rsNonCharRange = '\\\\x00-\\\\x2f\\\\x3a-\\\\x40\\\\x5b-\\\\x60\\\\x7b-\\\\xbf',\n rsPunctuationRange = '\\\\u2000-\\\\u206f',\n rsSpaceRange = ' \\\\t\\\\x0b\\\\f\\\\xa0\\\\ufeff\\\\n\\\\r\\\\u2028\\\\u2029\\\\u1680\\\\u180e\\\\u2000\\\\u2001\\\\u2002\\\\u2003\\\\u2004\\\\u2005\\\\u2006\\\\u2007\\\\u2008\\\\u2009\\\\u200a\\\\u202f\\\\u205f\\\\u3000',\n rsUpperRange = 'A-Z\\\\xc0-\\\\xd6\\\\xd8-\\\\xde',\n rsVarRange = '\\\\ufe0e\\\\ufe0f',\n rsBreakRange = rsMathOpRange + rsNonCharRange + rsPunctuationRange + rsSpaceRange;\n\n /** Used to compose unicode capture groups. */\n var rsApos = \"['\\u2019]\",\n rsAstral = '[' + rsAstralRange + ']',\n rsBreak = '[' + rsBreakRange + ']',\n rsCombo = '[' + rsComboRange + ']',\n rsDigits = '\\\\d+',\n rsDingbat = '[' + rsDingbatRange + ']',\n rsLower = '[' + rsLowerRange + ']',\n rsMisc = '[^' + rsAstralRange + rsBreakRange + rsDigits + rsDingbatRange + rsLowerRange + rsUpperRange + ']',\n rsFitz = '\\\\ud83c[\\\\udffb-\\\\udfff]',\n rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')',\n rsNonAstral = '[^' + rsAstralRange + ']',\n rsRegional = '(?:\\\\ud83c[\\\\udde6-\\\\uddff]){2}',\n rsSurrPair = '[\\\\ud800-\\\\udbff][\\\\udc00-\\\\udfff]',\n rsUpper = '[' + rsUpperRange + ']',\n rsZWJ = '\\\\u200d';\n\n /** Used to compose unicode regexes. */\n var rsMiscLower = '(?:' + rsLower + '|' + rsMisc + ')',\n rsMiscUpper = '(?:' + rsUpper + '|' + rsMisc + ')',\n rsOptContrLower = '(?:' + rsApos + '(?:d|ll|m|re|s|t|ve))?',\n rsOptContrUpper = '(?:' + rsApos + '(?:D|LL|M|RE|S|T|VE))?',\n reOptMod = rsModifier + '?',\n rsOptVar = '[' + rsVarRange + ']?',\n rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*',\n rsOrdLower = '\\\\d*(?:1st|2nd|3rd|(?![123])\\\\dth)(?=\\\\b|[A-Z_])',\n rsOrdUpper = '\\\\d*(?:1ST|2ND|3RD|(?![123])\\\\dTH)(?=\\\\b|[a-z_])',\n rsSeq = rsOptVar + reOptMod + rsOptJoin,\n rsEmoji = '(?:' + [rsDingbat, rsRegional, rsSurrPair].join('|') + ')' + rsSeq,\n rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')';\n\n /** Used to match apostrophes. */\n var reApos = RegExp(rsApos, 'g');\n\n /**\n * Used to match [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks) and\n * [combining diacritical marks for symbols](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks_for_Symbols).\n */\n var reComboMark = RegExp(rsCombo, 'g');\n\n /** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */\n var reUnicode = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g');\n\n /** Used to match complex or compound words. */\n var reUnicodeWord = RegExp([\n rsUpper + '?' + rsLower + '+' + rsOptContrLower + '(?=' + [rsBreak, rsUpper, '$'].join('|') + ')',\n rsMiscUpper + '+' + rsOptContrUpper + '(?=' + [rsBreak, rsUpper + rsMiscLower, '$'].join('|') + ')',\n rsUpper + '?' + rsMiscLower + '+' + rsOptContrLower,\n rsUpper + '+' + rsOptContrUpper,\n rsOrdUpper,\n rsOrdLower,\n rsDigits,\n rsEmoji\n ].join('|'), 'g');\n\n /** Used to detect strings with [zero-width joiners or code points from the astral planes](http://eev.ee/blog/2015/09/12/dark-corners-of-unicode/). */\n var reHasUnicode = RegExp('[' + rsZWJ + rsAstralRange + rsComboRange + rsVarRange + ']');\n\n /** Used to detect strings that need a more robust regexp to match words. */\n var reHasUnicodeWord = /[a-z][A-Z]|[A-Z]{2}[a-z]|[0-9][a-zA-Z]|[a-zA-Z][0-9]|[^a-zA-Z0-9 ]/;\n\n /** Used to assign default `context` object properties. */\n var contextProps = [\n 'Array', 'Buffer', 'DataView', 'Date', 'Error', 'Float32Array', 'Float64Array',\n 'Function', 'Int8Array', 'Int16Array', 'Int32Array', 'Map', 'Math', 'Object',\n 'Promise', 'RegExp', 'Set', 'String', 'Symbol', 'TypeError', 'Uint8Array',\n 'Uint8ClampedArray', 'Uint16Array', 'Uint32Array', 'WeakMap',\n '_', 'clearTimeout', 'isFinite', 'parseInt', 'setTimeout'\n ];\n\n /** Used to make template sourceURLs easier to identify. */\n var templateCounter = -1;\n\n /** Used to identify `toStringTag` values of typed arrays. */\n var typedArrayTags = {};\n typedArrayTags[float32Tag] = typedArrayTags[float64Tag] =\n typedArrayTags[int8Tag] = typedArrayTags[int16Tag] =\n typedArrayTags[int32Tag] = typedArrayTags[uint8Tag] =\n typedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] =\n typedArrayTags[uint32Tag] = true;\n typedArrayTags[argsTag] = typedArrayTags[arrayTag] =\n typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] =\n typedArrayTags[dataViewTag] = typedArrayTags[dateTag] =\n typedArrayTags[errorTag] = typedArrayTags[funcTag] =\n typedArrayTags[mapTag] = typedArrayTags[numberTag] =\n typedArrayTags[objectTag] = typedArrayTags[regexpTag] =\n typedArrayTags[setTag] = typedArrayTags[stringTag] =\n typedArrayTags[weakMapTag] = false;\n\n /** Used to identify `toStringTag` values supported by `_.clone`. */\n var cloneableTags = {};\n cloneableTags[argsTag] = cloneableTags[arrayTag] =\n cloneableTags[arrayBufferTag] = cloneableTags[dataViewTag] =\n cloneableTags[boolTag] = cloneableTags[dateTag] =\n cloneableTags[float32Tag] = cloneableTags[float64Tag] =\n cloneableTags[int8Tag] = cloneableTags[int16Tag] =\n cloneableTags[int32Tag] = cloneableTags[mapTag] =\n cloneableTags[numberTag] = cloneableTags[objectTag] =\n cloneableTags[regexpTag] = cloneableTags[setTag] =\n cloneableTags[stringTag] = cloneableTags[symbolTag] =\n cloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] =\n cloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true;\n cloneableTags[errorTag] = cloneableTags[funcTag] =\n cloneableTags[weakMapTag] = false;\n\n /** Used to map Latin Unicode letters to basic Latin letters. */\n var deburredLetters = {\n // Latin-1 Supplement block.\n '\\xc0': 'A', '\\xc1': 'A', '\\xc2': 'A', '\\xc3': 'A', '\\xc4': 'A', '\\xc5': 'A',\n '\\xe0': 'a', '\\xe1': 'a', '\\xe2': 'a', '\\xe3': 'a', '\\xe4': 'a', '\\xe5': 'a',\n '\\xc7': 'C', '\\xe7': 'c',\n '\\xd0': 'D', '\\xf0': 'd',\n '\\xc8': 'E', '\\xc9': 'E', '\\xca': 'E', '\\xcb': 'E',\n '\\xe8': 'e', '\\xe9': 'e', '\\xea': 'e', '\\xeb': 'e',\n '\\xcc': 'I', '\\xcd': 'I', '\\xce': 'I', '\\xcf': 'I',\n '\\xec': 'i', '\\xed': 'i', '\\xee': 'i', '\\xef': 'i',\n '\\xd1': 'N', '\\xf1': 'n',\n '\\xd2': 'O', '\\xd3': 'O', '\\xd4': 'O', '\\xd5': 'O', '\\xd6': 'O', '\\xd8': 'O',\n '\\xf2': 'o', '\\xf3': 'o', '\\xf4': 'o', '\\xf5': 'o', '\\xf6': 'o', '\\xf8': 'o',\n '\\xd9': 'U', '\\xda': 'U', '\\xdb': 'U', '\\xdc': 'U',\n '\\xf9': 'u', '\\xfa': 'u', '\\xfb': 'u', '\\xfc': 'u',\n '\\xdd': 'Y', '\\xfd': 'y', '\\xff': 'y',\n '\\xc6': 'Ae', '\\xe6': 'ae',\n '\\xde': 'Th', '\\xfe': 'th',\n '\\xdf': 'ss',\n // Latin Extended-A block.\n '\\u0100': 'A', '\\u0102': 'A', '\\u0104': 'A',\n '\\u0101': 'a', '\\u0103': 'a', '\\u0105': 'a',\n '\\u0106': 'C', '\\u0108': 'C', '\\u010a': 'C', '\\u010c': 'C',\n '\\u0107': 'c', '\\u0109': 'c', '\\u010b': 'c', '\\u010d': 'c',\n '\\u010e': 'D', '\\u0110': 'D', '\\u010f': 'd', '\\u0111': 'd',\n '\\u0112': 'E', '\\u0114': 'E', '\\u0116': 'E', '\\u0118': 'E', '\\u011a': 'E',\n '\\u0113': 'e', '\\u0115': 'e', '\\u0117': 'e', '\\u0119': 'e', '\\u011b': 'e',\n '\\u011c': 'G', '\\u011e': 'G', '\\u0120': 'G', '\\u0122': 'G',\n '\\u011d': 'g', '\\u011f': 'g', '\\u0121': 'g', '\\u0123': 'g',\n '\\u0124': 'H', '\\u0126': 'H', '\\u0125': 'h', '\\u0127': 'h',\n '\\u0128': 'I', '\\u012a': 'I', '\\u012c': 'I', '\\u012e': 'I', '\\u0130': 'I',\n '\\u0129': 'i', '\\u012b': 'i', '\\u012d': 'i', '\\u012f': 'i', '\\u0131': 'i',\n '\\u0134': 'J', '\\u0135': 'j',\n '\\u0136': 'K', '\\u0137': 'k', '\\u0138': 'k',\n '\\u0139': 'L', '\\u013b': 'L', '\\u013d': 'L', '\\u013f': 'L', '\\u0141': 'L',\n '\\u013a': 'l', '\\u013c': 'l', '\\u013e': 'l', '\\u0140': 'l', '\\u0142': 'l',\n '\\u0143': 'N', '\\u0145': 'N', '\\u0147': 'N', '\\u014a': 'N',\n '\\u0144': 'n', '\\u0146': 'n', '\\u0148': 'n', '\\u014b': 'n',\n '\\u014c': 'O', '\\u014e': 'O', '\\u0150': 'O',\n '\\u014d': 'o', '\\u014f': 'o', '\\u0151': 'o',\n '\\u0154': 'R', '\\u0156': 'R', '\\u0158': 'R',\n '\\u0155': 'r', '\\u0157': 'r', '\\u0159': 'r',\n '\\u015a': 'S', '\\u015c': 'S', '\\u015e': 'S', '\\u0160': 'S',\n '\\u015b': 's', '\\u015d': 's', '\\u015f': 's', '\\u0161': 's',\n '\\u0162': 'T', '\\u0164': 'T', '\\u0166': 'T',\n '\\u0163': 't', '\\u0165': 't', '\\u0167': 't',\n '\\u0168': 'U', '\\u016a': 'U', '\\u016c': 'U', '\\u016e': 'U', '\\u0170': 'U', '\\u0172': 'U',\n '\\u0169': 'u', '\\u016b': 'u', '\\u016d': 'u', '\\u016f': 'u', '\\u0171': 'u', '\\u0173': 'u',\n '\\u0174': 'W', '\\u0175': 'w',\n '\\u0176': 'Y', '\\u0177': 'y', '\\u0178': 'Y',\n '\\u0179': 'Z', '\\u017b': 'Z', '\\u017d': 'Z',\n '\\u017a': 'z', '\\u017c': 'z', '\\u017e': 'z',\n '\\u0132': 'IJ', '\\u0133': 'ij',\n '\\u0152': 'Oe', '\\u0153': 'oe',\n '\\u0149': \"'n\", '\\u017f': 's'\n };\n\n /** Used to map characters to HTML entities. */\n var htmlEscapes = {\n '&': '&',\n '<': '<',\n '>': '>',\n '\"': '"',\n \"'\": '''\n };\n\n /** Used to map HTML entities to characters. */\n var htmlUnescapes = {\n '&': '&',\n '<': '<',\n '>': '>',\n '"': '\"',\n ''': \"'\"\n };\n\n /** Used to escape characters for inclusion in compiled string literals. */\n var stringEscapes = {\n '\\\\': '\\\\',\n \"'\": \"'\",\n '\\n': 'n',\n '\\r': 'r',\n '\\u2028': 'u2028',\n '\\u2029': 'u2029'\n };\n\n /** Built-in method references without a dependency on `root`. */\n var freeParseFloat = parseFloat,\n freeParseInt = parseInt;\n\n /** Detect free variable `global` from Node.js. */\n var freeGlobal = typeof global == 'object' && global && global.Object === Object && global;\n\n /** Detect free variable `self`. */\n var freeSelf = typeof self == 'object' && self && self.Object === Object && self;\n\n /** Used as a reference to the global object. */\n var root = freeGlobal || freeSelf || Function('return this')();\n\n /** Detect free variable `exports`. */\n var freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports;\n\n /** Detect free variable `module`. */\n var freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module;\n\n /** Detect the popular CommonJS extension `module.exports`. */\n var moduleExports = freeModule && freeModule.exports === freeExports;\n\n /** Detect free variable `process` from Node.js. */\n var freeProcess = moduleExports && freeGlobal.process;\n\n /** Used to access faster Node.js helpers. */\n var nodeUtil = (function() {\n try {\n // Use `util.types` for Node.js 10+.\n var types = freeModule && freeModule.require && freeModule.require('util').types;\n\n if (types) {\n return types;\n }\n\n // Legacy `process.binding('util')` for Node.js < 10.\n return freeProcess && freeProcess.binding && freeProcess.binding('util');\n } catch (e) {}\n }());\n\n /* Node.js helper references. */\n var nodeIsArrayBuffer = nodeUtil && nodeUtil.isArrayBuffer,\n nodeIsDate = nodeUtil && nodeUtil.isDate,\n nodeIsMap = nodeUtil && nodeUtil.isMap,\n nodeIsRegExp = nodeUtil && nodeUtil.isRegExp,\n nodeIsSet = nodeUtil && nodeUtil.isSet,\n nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray;\n\n /*--------------------------------------------------------------------------*/\n\n /**\n * A faster alternative to `Function#apply`, this function invokes `func`\n * with the `this` binding of `thisArg` and the arguments of `args`.\n *\n * @private\n * @param {Function} func The function to invoke.\n * @param {*} thisArg The `this` binding of `func`.\n * @param {Array} args The arguments to invoke `func` with.\n * @returns {*} Returns the result of `func`.\n */\n function apply(func, thisArg, args) {\n switch (args.length) {\n case 0: return func.call(thisArg);\n case 1: return func.call(thisArg, args[0]);\n case 2: return func.call(thisArg, args[0], args[1]);\n case 3: return func.call(thisArg, args[0], args[1], args[2]);\n }\n return func.apply(thisArg, args);\n }\n\n /**\n * A specialized version of `baseAggregator` for arrays.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} setter The function to set `accumulator` values.\n * @param {Function} iteratee The iteratee to transform keys.\n * @param {Object} accumulator The initial aggregated object.\n * @returns {Function} Returns `accumulator`.\n */\n function arrayAggregator(array, setter, iteratee, accumulator) {\n var index = -1,\n length = array == null ? 0 : array.length;\n\n while (++index < length) {\n var value = array[index];\n setter(accumulator, value, iteratee(value), array);\n }\n return accumulator;\n }\n\n /**\n * A specialized version of `_.forEach` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns `array`.\n */\n function arrayEach(array, iteratee) {\n var index = -1,\n length = array == null ? 0 : array.length;\n\n while (++index < length) {\n if (iteratee(array[index], index, array) === false) {\n break;\n }\n }\n return array;\n }\n\n /**\n * A specialized version of `_.forEachRight` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns `array`.\n */\n function arrayEachRight(array, iteratee) {\n var length = array == null ? 0 : array.length;\n\n while (length--) {\n if (iteratee(array[length], length, array) === false) {\n break;\n }\n }\n return array;\n }\n\n /**\n * A specialized version of `_.every` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {boolean} Returns `true` if all elements pass the predicate check,\n * else `false`.\n */\n function arrayEvery(array, predicate) {\n var index = -1,\n length = array == null ? 0 : array.length;\n\n while (++index < length) {\n if (!predicate(array[index], index, array)) {\n return false;\n }\n }\n return true;\n }\n\n /**\n * A specialized version of `_.filter` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {Array} Returns the new filtered array.\n */\n function arrayFilter(array, predicate) {\n var index = -1,\n length = array == null ? 0 : array.length,\n resIndex = 0,\n result = [];\n\n while (++index < length) {\n var value = array[index];\n if (predicate(value, index, array)) {\n result[resIndex++] = value;\n }\n }\n return result;\n }\n\n /**\n * A specialized version of `_.includes` for arrays without support for\n * specifying an index to search from.\n *\n * @private\n * @param {Array} [array] The array to inspect.\n * @param {*} target The value to search for.\n * @returns {boolean} Returns `true` if `target` is found, else `false`.\n */\n function arrayIncludes(array, value) {\n var length = array == null ? 0 : array.length;\n return !!length && baseIndexOf(array, value, 0) > -1;\n }\n\n /**\n * This function is like `arrayIncludes` except that it accepts a comparator.\n *\n * @private\n * @param {Array} [array] The array to inspect.\n * @param {*} target The value to search for.\n * @param {Function} comparator The comparator invoked per element.\n * @returns {boolean} Returns `true` if `target` is found, else `false`.\n */\n function arrayIncludesWith(array, value, comparator) {\n var index = -1,\n length = array == null ? 0 : array.length;\n\n while (++index < length) {\n if (comparator(value, array[index])) {\n return true;\n }\n }\n return false;\n }\n\n /**\n * A specialized version of `_.map` for arrays without support for iteratee\n * shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns the new mapped array.\n */\n function arrayMap(array, iteratee) {\n var index = -1,\n length = array == null ? 0 : array.length,\n result = Array(length);\n\n while (++index < length) {\n result[index] = iteratee(array[index], index, array);\n }\n return result;\n }\n\n /**\n * Appends the elements of `values` to `array`.\n *\n * @private\n * @param {Array} array The array to modify.\n * @param {Array} values The values to append.\n * @returns {Array} Returns `array`.\n */\n function arrayPush(array, values) {\n var index = -1,\n length = values.length,\n offset = array.length;\n\n while (++index < length) {\n array[offset + index] = values[index];\n }\n return array;\n }\n\n /**\n * A specialized version of `_.reduce` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @param {*} [accumulator] The initial value.\n * @param {boolean} [initAccum] Specify using the first element of `array` as\n * the initial value.\n * @returns {*} Returns the accumulated value.\n */\n function arrayReduce(array, iteratee, accumulator, initAccum) {\n var index = -1,\n length = array == null ? 0 : array.length;\n\n if (initAccum && length) {\n accumulator = array[++index];\n }\n while (++index < length) {\n accumulator = iteratee(accumulator, array[index], index, array);\n }\n return accumulator;\n }\n\n /**\n * A specialized version of `_.reduceRight` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @param {*} [accumulator] The initial value.\n * @param {boolean} [initAccum] Specify using the last element of `array` as\n * the initial value.\n * @returns {*} Returns the accumulated value.\n */\n function arrayReduceRight(array, iteratee, accumulator, initAccum) {\n var length = array == null ? 0 : array.length;\n if (initAccum && length) {\n accumulator = array[--length];\n }\n while (length--) {\n accumulator = iteratee(accumulator, array[length], length, array);\n }\n return accumulator;\n }\n\n /**\n * A specialized version of `_.some` for arrays without support for iteratee\n * shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {boolean} Returns `true` if any element passes the predicate check,\n * else `false`.\n */\n function arraySome(array, predicate) {\n var index = -1,\n length = array == null ? 0 : array.length;\n\n while (++index < length) {\n if (predicate(array[index], index, array)) {\n return true;\n }\n }\n return false;\n }\n\n /**\n * Gets the size of an ASCII `string`.\n *\n * @private\n * @param {string} string The string inspect.\n * @returns {number} Returns the string size.\n */\n var asciiSize = baseProperty('length');\n\n /**\n * Converts an ASCII `string` to an array.\n *\n * @private\n * @param {string} string The string to convert.\n * @returns {Array} Returns the converted array.\n */\n function asciiToArray(string) {\n return string.split('');\n }\n\n /**\n * Splits an ASCII `string` into an array of its words.\n *\n * @private\n * @param {string} The string to inspect.\n * @returns {Array} Returns the words of `string`.\n */\n function asciiWords(string) {\n return string.match(reAsciiWord) || [];\n }\n\n /**\n * The base implementation of methods like `_.findKey` and `_.findLastKey`,\n * without support for iteratee shorthands, which iterates over `collection`\n * using `eachFunc`.\n *\n * @private\n * @param {Array|Object} collection The collection to inspect.\n * @param {Function} predicate The function invoked per iteration.\n * @param {Function} eachFunc The function to iterate over `collection`.\n * @returns {*} Returns the found element or its key, else `undefined`.\n */\n function baseFindKey(collection, predicate, eachFunc) {\n var result;\n eachFunc(collection, function(value, key, collection) {\n if (predicate(value, key, collection)) {\n result = key;\n return false;\n }\n });\n return result;\n }\n\n /**\n * The base implementation of `_.findIndex` and `_.findLastIndex` without\n * support for iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {Function} predicate The function invoked per iteration.\n * @param {number} fromIndex The index to search from.\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\n function baseFindIndex(array, predicate, fromIndex, fromRight) {\n var length = array.length,\n index = fromIndex + (fromRight ? 1 : -1);\n\n while ((fromRight ? index-- : ++index < length)) {\n if (predicate(array[index], index, array)) {\n return index;\n }\n }\n return -1;\n }\n\n /**\n * The base implementation of `_.indexOf` without `fromIndex` bounds checks.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @param {number} fromIndex The index to search from.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\n function baseIndexOf(array, value, fromIndex) {\n return value === value\n ? strictIndexOf(array, value, fromIndex)\n : baseFindIndex(array, baseIsNaN, fromIndex);\n }\n\n /**\n * This function is like `baseIndexOf` except that it accepts a comparator.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @param {number} fromIndex The index to search from.\n * @param {Function} comparator The comparator invoked per element.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\n function baseIndexOfWith(array, value, fromIndex, comparator) {\n var index = fromIndex - 1,\n length = array.length;\n\n while (++index < length) {\n if (comparator(array[index], value)) {\n return index;\n }\n }\n return -1;\n }\n\n /**\n * The base implementation of `_.isNaN` without support for number objects.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.\n */\n function baseIsNaN(value) {\n return value !== value;\n }\n\n /**\n * The base implementation of `_.mean` and `_.meanBy` without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {number} Returns the mean.\n */\n function baseMean(array, iteratee) {\n var length = array == null ? 0 : array.length;\n return length ? (baseSum(array, iteratee) / length) : NAN;\n }\n\n /**\n * The base implementation of `_.property` without support for deep paths.\n *\n * @private\n * @param {string} key The key of the property to get.\n * @returns {Function} Returns the new accessor function.\n */\n function baseProperty(key) {\n return function(object) {\n return object == null ? undefined : object[key];\n };\n }\n\n /**\n * The base implementation of `_.propertyOf` without support for deep paths.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Function} Returns the new accessor function.\n */\n function basePropertyOf(object) {\n return function(key) {\n return object == null ? undefined : object[key];\n };\n }\n\n /**\n * The base implementation of `_.reduce` and `_.reduceRight`, without support\n * for iteratee shorthands, which iterates over `collection` using `eachFunc`.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @param {*} accumulator The initial value.\n * @param {boolean} initAccum Specify using the first or last element of\n * `collection` as the initial value.\n * @param {Function} eachFunc The function to iterate over `collection`.\n * @returns {*} Returns the accumulated value.\n */\n function baseReduce(collection, iteratee, accumulator, initAccum, eachFunc) {\n eachFunc(collection, function(value, index, collection) {\n accumulator = initAccum\n ? (initAccum = false, value)\n : iteratee(accumulator, value, index, collection);\n });\n return accumulator;\n }\n\n /**\n * The base implementation of `_.sortBy` which uses `comparer` to define the\n * sort order of `array` and replaces criteria objects with their corresponding\n * values.\n *\n * @private\n * @param {Array} array The array to sort.\n * @param {Function} comparer The function to define sort order.\n * @returns {Array} Returns `array`.\n */\n function baseSortBy(array, comparer) {\n var length = array.length;\n\n array.sort(comparer);\n while (length--) {\n array[length] = array[length].value;\n }\n return array;\n }\n\n /**\n * The base implementation of `_.sum` and `_.sumBy` without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {number} Returns the sum.\n */\n function baseSum(array, iteratee) {\n var result,\n index = -1,\n length = array.length;\n\n while (++index < length) {\n var current = iteratee(array[index]);\n if (current !== undefined) {\n result = result === undefined ? current : (result + current);\n }\n }\n return result;\n }\n\n /**\n * The base implementation of `_.times` without support for iteratee shorthands\n * or max array length checks.\n *\n * @private\n * @param {number} n The number of times to invoke `iteratee`.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns the array of results.\n */\n function baseTimes(n, iteratee) {\n var index = -1,\n result = Array(n);\n\n while (++index < n) {\n result[index] = iteratee(index);\n }\n return result;\n }\n\n /**\n * The base implementation of `_.toPairs` and `_.toPairsIn` which creates an array\n * of key-value pairs for `object` corresponding to the property names of `props`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array} props The property names to get values for.\n * @returns {Object} Returns the key-value pairs.\n */\n function baseToPairs(object, props) {\n return arrayMap(props, function(key) {\n return [key, object[key]];\n });\n }\n\n /**\n * The base implementation of `_.trim`.\n *\n * @private\n * @param {string} string The string to trim.\n * @returns {string} Returns the trimmed string.\n */\n function baseTrim(string) {\n return string\n ? string.slice(0, trimmedEndIndex(string) + 1).replace(reTrimStart, '')\n : string;\n }\n\n /**\n * The base implementation of `_.unary` without support for storing metadata.\n *\n * @private\n * @param {Function} func The function to cap arguments for.\n * @returns {Function} Returns the new capped function.\n */\n function baseUnary(func) {\n return function(value) {\n return func(value);\n };\n }\n\n /**\n * The base implementation of `_.values` and `_.valuesIn` which creates an\n * array of `object` property values corresponding to the property names\n * of `props`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array} props The property names to get values for.\n * @returns {Object} Returns the array of property values.\n */\n function baseValues(object, props) {\n return arrayMap(props, function(key) {\n return object[key];\n });\n }\n\n /**\n * Checks if a `cache` value for `key` exists.\n *\n * @private\n * @param {Object} cache The cache to query.\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\n function cacheHas(cache, key) {\n return cache.has(key);\n }\n\n /**\n * Used by `_.trim` and `_.trimStart` to get the index of the first string symbol\n * that is not found in the character symbols.\n *\n * @private\n * @param {Array} strSymbols The string symbols to inspect.\n * @param {Array} chrSymbols The character symbols to find.\n * @returns {number} Returns the index of the first unmatched string symbol.\n */\n function charsStartIndex(strSymbols, chrSymbols) {\n var index = -1,\n length = strSymbols.length;\n\n while (++index < length && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}\n return index;\n }\n\n /**\n * Used by `_.trim` and `_.trimEnd` to get the index of the last string symbol\n * that is not found in the character symbols.\n *\n * @private\n * @param {Array} strSymbols The string symbols to inspect.\n * @param {Array} chrSymbols The character symbols to find.\n * @returns {number} Returns the index of the last unmatched string symbol.\n */\n function charsEndIndex(strSymbols, chrSymbols) {\n var index = strSymbols.length;\n\n while (index-- && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}\n return index;\n }\n\n /**\n * Gets the number of `placeholder` occurrences in `array`.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {*} placeholder The placeholder to search for.\n * @returns {number} Returns the placeholder count.\n */\n function countHolders(array, placeholder) {\n var length = array.length,\n result = 0;\n\n while (length--) {\n if (array[length] === placeholder) {\n ++result;\n }\n }\n return result;\n }\n\n /**\n * Used by `_.deburr` to convert Latin-1 Supplement and Latin Extended-A\n * letters to basic Latin letters.\n *\n * @private\n * @param {string} letter The matched letter to deburr.\n * @returns {string} Returns the deburred letter.\n */\n var deburrLetter = basePropertyOf(deburredLetters);\n\n /**\n * Used by `_.escape` to convert characters to HTML entities.\n *\n * @private\n * @param {string} chr The matched character to escape.\n * @returns {string} Returns the escaped character.\n */\n var escapeHtmlChar = basePropertyOf(htmlEscapes);\n\n /**\n * Used by `_.template` to escape characters for inclusion in compiled string literals.\n *\n * @private\n * @param {string} chr The matched character to escape.\n * @returns {string} Returns the escaped character.\n */\n function escapeStringChar(chr) {\n return '\\\\' + stringEscapes[chr];\n }\n\n /**\n * Gets the value at `key` of `object`.\n *\n * @private\n * @param {Object} [object] The object to query.\n * @param {string} key The key of the property to get.\n * @returns {*} Returns the property value.\n */\n function getValue(object, key) {\n return object == null ? undefined : object[key];\n }\n\n /**\n * Checks if `string` contains Unicode symbols.\n *\n * @private\n * @param {string} string The string to inspect.\n * @returns {boolean} Returns `true` if a symbol is found, else `false`.\n */\n function hasUnicode(string) {\n return reHasUnicode.test(string);\n }\n\n /**\n * Checks if `string` contains a word composed of Unicode symbols.\n *\n * @private\n * @param {string} string The string to inspect.\n * @returns {boolean} Returns `true` if a word is found, else `false`.\n */\n function hasUnicodeWord(string) {\n return reHasUnicodeWord.test(string);\n }\n\n /**\n * Converts `iterator` to an array.\n *\n * @private\n * @param {Object} iterator The iterator to convert.\n * @returns {Array} Returns the converted array.\n */\n function iteratorToArray(iterator) {\n var data,\n result = [];\n\n while (!(data = iterator.next()).done) {\n result.push(data.value);\n }\n return result;\n }\n\n /**\n * Converts `map` to its key-value pairs.\n *\n * @private\n * @param {Object} map The map to convert.\n * @returns {Array} Returns the key-value pairs.\n */\n function mapToArray(map) {\n var index = -1,\n result = Array(map.size);\n\n map.forEach(function(value, key) {\n result[++index] = [key, value];\n });\n return result;\n }\n\n /**\n * Creates a unary function that invokes `func` with its argument transformed.\n *\n * @private\n * @param {Function} func The function to wrap.\n * @param {Function} transform The argument transform.\n * @returns {Function} Returns the new function.\n */\n function overArg(func, transform) {\n return function(arg) {\n return func(transform(arg));\n };\n }\n\n /**\n * Replaces all `placeholder` elements in `array` with an internal placeholder\n * and returns an array of their indexes.\n *\n * @private\n * @param {Array} array The array to modify.\n * @param {*} placeholder The placeholder to replace.\n * @returns {Array} Returns the new array of placeholder indexes.\n */\n function replaceHolders(array, placeholder) {\n var index = -1,\n length = array.length,\n resIndex = 0,\n result = [];\n\n while (++index < length) {\n var value = array[index];\n if (value === placeholder || value === PLACEHOLDER) {\n array[index] = PLACEHOLDER;\n result[resIndex++] = index;\n }\n }\n return result;\n }\n\n /**\n * Converts `set` to an array of its values.\n *\n * @private\n * @param {Object} set The set to convert.\n * @returns {Array} Returns the values.\n */\n function setToArray(set) {\n var index = -1,\n result = Array(set.size);\n\n set.forEach(function(value) {\n result[++index] = value;\n });\n return result;\n }\n\n /**\n * Converts `set` to its value-value pairs.\n *\n * @private\n * @param {Object} set The set to convert.\n * @returns {Array} Returns the value-value pairs.\n */\n function setToPairs(set) {\n var index = -1,\n result = Array(set.size);\n\n set.forEach(function(value) {\n result[++index] = [value, value];\n });\n return result;\n }\n\n /**\n * A specialized version of `_.indexOf` which performs strict equality\n * comparisons of values, i.e. `===`.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @param {number} fromIndex The index to search from.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\n function strictIndexOf(array, value, fromIndex) {\n var index = fromIndex - 1,\n length = array.length;\n\n while (++index < length) {\n if (array[index] === value) {\n return index;\n }\n }\n return -1;\n }\n\n /**\n * A specialized version of `_.lastIndexOf` which performs strict equality\n * comparisons of values, i.e. `===`.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @param {number} fromIndex The index to search from.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\n function strictLastIndexOf(array, value, fromIndex) {\n var index = fromIndex + 1;\n while (index--) {\n if (array[index] === value) {\n return index;\n }\n }\n return index;\n }\n\n /**\n * Gets the number of symbols in `string`.\n *\n * @private\n * @param {string} string The string to inspect.\n * @returns {number} Returns the string size.\n */\n function stringSize(string) {\n return hasUnicode(string)\n ? unicodeSize(string)\n : asciiSize(string);\n }\n\n /**\n * Converts `string` to an array.\n *\n * @private\n * @param {string} string The string to convert.\n * @returns {Array} Returns the converted array.\n */\n function stringToArray(string) {\n return hasUnicode(string)\n ? unicodeToArray(string)\n : asciiToArray(string);\n }\n\n /**\n * Used by `_.trim` and `_.trimEnd` to get the index of the last non-whitespace\n * character of `string`.\n *\n * @private\n * @param {string} string The string to inspect.\n * @returns {number} Returns the index of the last non-whitespace character.\n */\n function trimmedEndIndex(string) {\n var index = string.length;\n\n while (index-- && reWhitespace.test(string.charAt(index))) {}\n return index;\n }\n\n /**\n * Used by `_.unescape` to convert HTML entities to characters.\n *\n * @private\n * @param {string} chr The matched character to unescape.\n * @returns {string} Returns the unescaped character.\n */\n var unescapeHtmlChar = basePropertyOf(htmlUnescapes);\n\n /**\n * Gets the size of a Unicode `string`.\n *\n * @private\n * @param {string} string The string inspect.\n * @returns {number} Returns the string size.\n */\n function unicodeSize(string) {\n var result = reUnicode.lastIndex = 0;\n while (reUnicode.test(string)) {\n ++result;\n }\n return result;\n }\n\n /**\n * Converts a Unicode `string` to an array.\n *\n * @private\n * @param {string} string The string to convert.\n * @returns {Array} Returns the converted array.\n */\n function unicodeToArray(string) {\n return string.match(reUnicode) || [];\n }\n\n /**\n * Splits a Unicode `string` into an array of its words.\n *\n * @private\n * @param {string} The string to inspect.\n * @returns {Array} Returns the words of `string`.\n */\n function unicodeWords(string) {\n return string.match(reUnicodeWord) || [];\n }\n\n /*--------------------------------------------------------------------------*/\n\n /**\n * Create a new pristine `lodash` function using the `context` object.\n *\n * @static\n * @memberOf _\n * @since 1.1.0\n * @category Util\n * @param {Object} [context=root] The context object.\n * @returns {Function} Returns a new `lodash` function.\n * @example\n *\n * _.mixin({ 'foo': _.constant('foo') });\n *\n * var lodash = _.runInContext();\n * lodash.mixin({ 'bar': lodash.constant('bar') });\n *\n * _.isFunction(_.foo);\n * // => true\n * _.isFunction(_.bar);\n * // => false\n *\n * lodash.isFunction(lodash.foo);\n * // => false\n * lodash.isFunction(lodash.bar);\n * // => true\n *\n * // Create a suped-up `defer` in Node.js.\n * var defer = _.runInContext({ 'setTimeout': setImmediate }).defer;\n */\n var runInContext = (function runInContext(context) {\n context = context == null ? root : _.defaults(root.Object(), context, _.pick(root, contextProps));\n\n /** Built-in constructor references. */\n var Array = context.Array,\n Date = context.Date,\n Error = context.Error,\n Function = context.Function,\n Math = context.Math,\n Object = context.Object,\n RegExp = context.RegExp,\n String = context.String,\n TypeError = context.TypeError;\n\n /** Used for built-in method references. */\n var arrayProto = Array.prototype,\n funcProto = Function.prototype,\n objectProto = Object.prototype;\n\n /** Used to detect overreaching core-js shims. */\n var coreJsData = context['__core-js_shared__'];\n\n /** Used to resolve the decompiled source of functions. */\n var funcToString = funcProto.toString;\n\n /** Used to check objects for own properties. */\n var hasOwnProperty = objectProto.hasOwnProperty;\n\n /** Used to generate unique IDs. */\n var idCounter = 0;\n\n /** Used to detect methods masquerading as native. */\n var maskSrcKey = (function() {\n var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || '');\n return uid ? ('Symbol(src)_1.' + uid) : '';\n }());\n\n /**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)\n * of values.\n */\n var nativeObjectToString = objectProto.toString;\n\n /** Used to infer the `Object` constructor. */\n var objectCtorString = funcToString.call(Object);\n\n /** Used to restore the original `_` reference in `_.noConflict`. */\n var oldDash = root._;\n\n /** Used to detect if a method is native. */\n var reIsNative = RegExp('^' +\n funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\\\$&')\n .replace(/hasOwnProperty|(function).*?(?=\\\\\\()| for .+?(?=\\\\\\])/g, '$1.*?') + '$'\n );\n\n /** Built-in value references. */\n var Buffer = moduleExports ? context.Buffer : undefined,\n Symbol = context.Symbol,\n Uint8Array = context.Uint8Array,\n allocUnsafe = Buffer ? Buffer.allocUnsafe : undefined,\n getPrototype = overArg(Object.getPrototypeOf, Object),\n objectCreate = Object.create,\n propertyIsEnumerable = objectProto.propertyIsEnumerable,\n splice = arrayProto.splice,\n spreadableSymbol = Symbol ? Symbol.isConcatSpreadable : undefined,\n symIterator = Symbol ? Symbol.iterator : undefined,\n symToStringTag = Symbol ? Symbol.toStringTag : undefined;\n\n var defineProperty = (function() {\n try {\n var func = getNative(Object, 'defineProperty');\n func({}, '', {});\n return func;\n } catch (e) {}\n }());\n\n /** Mocked built-ins. */\n var ctxClearTimeout = context.clearTimeout !== root.clearTimeout && context.clearTimeout,\n ctxNow = Date && Date.now !== root.Date.now && Date.now,\n ctxSetTimeout = context.setTimeout !== root.setTimeout && context.setTimeout;\n\n /* Built-in method references for those with the same name as other `lodash` methods. */\n var nativeCeil = Math.ceil,\n nativeFloor = Math.floor,\n nativeGetSymbols = Object.getOwnPropertySymbols,\n nativeIsBuffer = Buffer ? Buffer.isBuffer : undefined,\n nativeIsFinite = context.isFinite,\n nativeJoin = arrayProto.join,\n nativeKeys = overArg(Object.keys, Object),\n nativeMax = Math.max,\n nativeMin = Math.min,\n nativeNow = Date.now,\n nativeParseInt = context.parseInt,\n nativeRandom = Math.random,\n nativeReverse = arrayProto.reverse;\n\n /* Built-in method references that are verified to be native. */\n var DataView = getNative(context, 'DataView'),\n Map = getNative(context, 'Map'),\n Promise = getNative(context, 'Promise'),\n Set = getNative(context, 'Set'),\n WeakMap = getNative(context, 'WeakMap'),\n nativeCreate = getNative(Object, 'create');\n\n /** Used to store function metadata. */\n var metaMap = WeakMap && new WeakMap;\n\n /** Used to lookup unminified function names. */\n var realNames = {};\n\n /** Used to detect maps, sets, and weakmaps. */\n var dataViewCtorString = toSource(DataView),\n mapCtorString = toSource(Map),\n promiseCtorString = toSource(Promise),\n setCtorString = toSource(Set),\n weakMapCtorString = toSource(WeakMap);\n\n /** Used to convert symbols to primitives and strings. */\n var symbolProto = Symbol ? Symbol.prototype : undefined,\n symbolValueOf = symbolProto ? symbolProto.valueOf : undefined,\n symbolToString = symbolProto ? symbolProto.toString : undefined;\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates a `lodash` object which wraps `value` to enable implicit method\n * chain sequences. Methods that operate on and return arrays, collections,\n * and functions can be chained together. Methods that retrieve a single value\n * or may return a primitive value will automatically end the chain sequence\n * and return the unwrapped value. Otherwise, the value must be unwrapped\n * with `_#value`.\n *\n * Explicit chain sequences, which must be unwrapped with `_#value`, may be\n * enabled using `_.chain`.\n *\n * The execution of chained methods is lazy, that is, it's deferred until\n * `_#value` is implicitly or explicitly called.\n *\n * Lazy evaluation allows several methods to support shortcut fusion.\n * Shortcut fusion is an optimization to merge iteratee calls; this avoids\n * the creation of intermediate arrays and can greatly reduce the number of\n * iteratee executions. Sections of a chain sequence qualify for shortcut\n * fusion if the section is applied to an array and iteratees accept only\n * one argument. The heuristic for whether a section qualifies for shortcut\n * fusion is subject to change.\n *\n * Chaining is supported in custom builds as long as the `_#value` method is\n * directly or indirectly included in the build.\n *\n * In addition to lodash methods, wrappers have `Array` and `String` methods.\n *\n * The wrapper `Array` methods are:\n * `concat`, `join`, `pop`, `push`, `shift`, `sort`, `splice`, and `unshift`\n *\n * The wrapper `String` methods are:\n * `replace` and `split`\n *\n * The wrapper methods that support shortcut fusion are:\n * `at`, `compact`, `drop`, `dropRight`, `dropWhile`, `filter`, `find`,\n * `findLast`, `head`, `initial`, `last`, `map`, `reject`, `reverse`, `slice`,\n * `tail`, `take`, `takeRight`, `takeRightWhile`, `takeWhile`, and `toArray`\n *\n * The chainable wrapper methods are:\n * `after`, `ary`, `assign`, `assignIn`, `assignInWith`, `assignWith`, `at`,\n * `before`, `bind`, `bindAll`, `bindKey`, `castArray`, `chain`, `chunk`,\n * `commit`, `compact`, `concat`, `conforms`, `constant`, `countBy`, `create`,\n * `curry`, `debounce`, `defaults`, `defaultsDeep`, `defer`, `delay`,\n * `difference`, `differenceBy`, `differenceWith`, `drop`, `dropRight`,\n * `dropRightWhile`, `dropWhile`, `extend`, `extendWith`, `fill`, `filter`,\n * `flatMap`, `flatMapDeep`, `flatMapDepth`, `flatten`, `flattenDeep`,\n * `flattenDepth`, `flip`, `flow`, `flowRight`, `fromPairs`, `functions`,\n * `functionsIn`, `groupBy`, `initial`, `intersection`, `intersectionBy`,\n * `intersectionWith`, `invert`, `invertBy`, `invokeMap`, `iteratee`, `keyBy`,\n * `keys`, `keysIn`, `map`, `mapKeys`, `mapValues`, `matches`, `matchesProperty`,\n * `memoize`, `merge`, `mergeWith`, `method`, `methodOf`, `mixin`, `negate`,\n * `nthArg`, `omit`, `omitBy`, `once`, `orderBy`, `over`, `overArgs`,\n * `overEvery`, `overSome`, `partial`, `partialRight`, `partition`, `pick`,\n * `pickBy`, `plant`, `property`, `propertyOf`, `pull`, `pullAll`, `pullAllBy`,\n * `pullAllWith`, `pullAt`, `push`, `range`, `rangeRight`, `rearg`, `reject`,\n * `remove`, `rest`, `reverse`, `sampleSize`, `set`, `setWith`, `shuffle`,\n * `slice`, `sort`, `sortBy`, `splice`, `spread`, `tail`, `take`, `takeRight`,\n * `takeRightWhile`, `takeWhile`, `tap`, `throttle`, `thru`, `toArray`,\n * `toPairs`, `toPairsIn`, `toPath`, `toPlainObject`, `transform`, `unary`,\n * `union`, `unionBy`, `unionWith`, `uniq`, `uniqBy`, `uniqWith`, `unset`,\n * `unshift`, `unzip`, `unzipWith`, `update`, `updateWith`, `values`,\n * `valuesIn`, `without`, `wrap`, `xor`, `xorBy`, `xorWith`, `zip`,\n * `zipObject`, `zipObjectDeep`, and `zipWith`\n *\n * The wrapper methods that are **not** chainable by default are:\n * `add`, `attempt`, `camelCase`, `capitalize`, `ceil`, `clamp`, `clone`,\n * `cloneDeep`, `cloneDeepWith`, `cloneWith`, `conformsTo`, `deburr`,\n * `defaultTo`, `divide`, `each`, `eachRight`, `endsWith`, `eq`, `escape`,\n * `escapeRegExp`, `every`, `find`, `findIndex`, `findKey`, `findLast`,\n * `findLastIndex`, `findLastKey`, `first`, `floor`, `forEach`, `forEachRight`,\n * `forIn`, `forInRight`, `forOwn`, `forOwnRight`, `get`, `gt`, `gte`, `has`,\n * `hasIn`, `head`, `identity`, `includes`, `indexOf`, `inRange`, `invoke`,\n * `isArguments`, `isArray`, `isArrayBuffer`, `isArrayLike`, `isArrayLikeObject`,\n * `isBoolean`, `isBuffer`, `isDate`, `isElement`, `isEmpty`, `isEqual`,\n * `isEqualWith`, `isError`, `isFinite`, `isFunction`, `isInteger`, `isLength`,\n * `isMap`, `isMatch`, `isMatchWith`, `isNaN`, `isNative`, `isNil`, `isNull`,\n * `isNumber`, `isObject`, `isObjectLike`, `isPlainObject`, `isRegExp`,\n * `isSafeInteger`, `isSet`, `isString`, `isUndefined`, `isTypedArray`,\n * `isWeakMap`, `isWeakSet`, `join`, `kebabCase`, `last`, `lastIndexOf`,\n * `lowerCase`, `lowerFirst`, `lt`, `lte`, `max`, `maxBy`, `mean`, `meanBy`,\n * `min`, `minBy`, `multiply`, `noConflict`, `noop`, `now`, `nth`, `pad`,\n * `padEnd`, `padStart`, `parseInt`, `pop`, `random`, `reduce`, `reduceRight`,\n * `repeat`, `result`, `round`, `runInContext`, `sample`, `shift`, `size`,\n * `snakeCase`, `some`, `sortedIndex`, `sortedIndexBy`, `sortedLastIndex`,\n * `sortedLastIndexBy`, `startCase`, `startsWith`, `stubArray`, `stubFalse`,\n * `stubObject`, `stubString`, `stubTrue`, `subtract`, `sum`, `sumBy`,\n * `template`, `times`, `toFinite`, `toInteger`, `toJSON`, `toLength`,\n * `toLower`, `toNumber`, `toSafeInteger`, `toString`, `toUpper`, `trim`,\n * `trimEnd`, `trimStart`, `truncate`, `unescape`, `uniqueId`, `upperCase`,\n * `upperFirst`, `value`, and `words`\n *\n * @name _\n * @constructor\n * @category Seq\n * @param {*} value The value to wrap in a `lodash` instance.\n * @returns {Object} Returns the new `lodash` wrapper instance.\n * @example\n *\n * function square(n) {\n * return n * n;\n * }\n *\n * var wrapped = _([1, 2, 3]);\n *\n * // Returns an unwrapped value.\n * wrapped.reduce(_.add);\n * // => 6\n *\n * // Returns a wrapped value.\n * var squares = wrapped.map(square);\n *\n * _.isArray(squares);\n * // => false\n *\n * _.isArray(squares.value());\n * // => true\n */\n function lodash(value) {\n if (isObjectLike(value) && !isArray(value) && !(value instanceof LazyWrapper)) {\n if (value instanceof LodashWrapper) {\n return value;\n }\n if (hasOwnProperty.call(value, '__wrapped__')) {\n return wrapperClone(value);\n }\n }\n return new LodashWrapper(value);\n }\n\n /**\n * The base implementation of `_.create` without support for assigning\n * properties to the created object.\n *\n * @private\n * @param {Object} proto The object to inherit from.\n * @returns {Object} Returns the new object.\n */\n var baseCreate = (function() {\n function object() {}\n return function(proto) {\n if (!isObject(proto)) {\n return {};\n }\n if (objectCreate) {\n return objectCreate(proto);\n }\n object.prototype = proto;\n var result = new object;\n object.prototype = undefined;\n return result;\n };\n }());\n\n /**\n * The function whose prototype chain sequence wrappers inherit from.\n *\n * @private\n */\n function baseLodash() {\n // No operation performed.\n }\n\n /**\n * The base constructor for creating `lodash` wrapper objects.\n *\n * @private\n * @param {*} value The value to wrap.\n * @param {boolean} [chainAll] Enable explicit method chain sequences.\n */\n function LodashWrapper(value, chainAll) {\n this.__wrapped__ = value;\n this.__actions__ = [];\n this.__chain__ = !!chainAll;\n this.__index__ = 0;\n this.__values__ = undefined;\n }\n\n /**\n * By default, the template delimiters used by lodash are like those in\n * embedded Ruby (ERB) as well as ES2015 template strings. Change the\n * following template settings to use alternative delimiters.\n *\n * @static\n * @memberOf _\n * @type {Object}\n */\n lodash.templateSettings = {\n\n /**\n * Used to detect `data` property values to be HTML-escaped.\n *\n * @memberOf _.templateSettings\n * @type {RegExp}\n */\n 'escape': reEscape,\n\n /**\n * Used to detect code to be evaluated.\n *\n * @memberOf _.templateSettings\n * @type {RegExp}\n */\n 'evaluate': reEvaluate,\n\n /**\n * Used to detect `data` property values to inject.\n *\n * @memberOf _.templateSettings\n * @type {RegExp}\n */\n 'interpolate': reInterpolate,\n\n /**\n * Used to reference the data object in the template text.\n *\n * @memberOf _.templateSettings\n * @type {string}\n */\n 'variable': '',\n\n /**\n * Used to import variables into the compiled template.\n *\n * @memberOf _.templateSettings\n * @type {Object}\n */\n 'imports': {\n\n /**\n * A reference to the `lodash` function.\n *\n * @memberOf _.templateSettings.imports\n * @type {Function}\n */\n '_': lodash\n }\n };\n\n // Ensure wrappers are instances of `baseLodash`.\n lodash.prototype = baseLodash.prototype;\n lodash.prototype.constructor = lodash;\n\n LodashWrapper.prototype = baseCreate(baseLodash.prototype);\n LodashWrapper.prototype.constructor = LodashWrapper;\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates a lazy wrapper object which wraps `value` to enable lazy evaluation.\n *\n * @private\n * @constructor\n * @param {*} value The value to wrap.\n */\n function LazyWrapper(value) {\n this.__wrapped__ = value;\n this.__actions__ = [];\n this.__dir__ = 1;\n this.__filtered__ = false;\n this.__iteratees__ = [];\n this.__takeCount__ = MAX_ARRAY_LENGTH;\n this.__views__ = [];\n }\n\n /**\n * Creates a clone of the lazy wrapper object.\n *\n * @private\n * @name clone\n * @memberOf LazyWrapper\n * @returns {Object} Returns the cloned `LazyWrapper` object.\n */\n function lazyClone() {\n var result = new LazyWrapper(this.__wrapped__);\n result.__actions__ = copyArray(this.__actions__);\n result.__dir__ = this.__dir__;\n result.__filtered__ = this.__filtered__;\n result.__iteratees__ = copyArray(this.__iteratees__);\n result.__takeCount__ = this.__takeCount__;\n result.__views__ = copyArray(this.__views__);\n return result;\n }\n\n /**\n * Reverses the direction of lazy iteration.\n *\n * @private\n * @name reverse\n * @memberOf LazyWrapper\n * @returns {Object} Returns the new reversed `LazyWrapper` object.\n */\n function lazyReverse() {\n if (this.__filtered__) {\n var result = new LazyWrapper(this);\n result.__dir__ = -1;\n result.__filtered__ = true;\n } else {\n result = this.clone();\n result.__dir__ *= -1;\n }\n return result;\n }\n\n /**\n * Extracts the unwrapped value from its lazy wrapper.\n *\n * @private\n * @name value\n * @memberOf LazyWrapper\n * @returns {*} Returns the unwrapped value.\n */\n function lazyValue() {\n var array = this.__wrapped__.value(),\n dir = this.__dir__,\n isArr = isArray(array),\n isRight = dir < 0,\n arrLength = isArr ? array.length : 0,\n view = getView(0, arrLength, this.__views__),\n start = view.start,\n end = view.end,\n length = end - start,\n index = isRight ? end : (start - 1),\n iteratees = this.__iteratees__,\n iterLength = iteratees.length,\n resIndex = 0,\n takeCount = nativeMin(length, this.__takeCount__);\n\n if (!isArr || (!isRight && arrLength == length && takeCount == length)) {\n return baseWrapperValue(array, this.__actions__);\n }\n var result = [];\n\n outer:\n while (length-- && resIndex < takeCount) {\n index += dir;\n\n var iterIndex = -1,\n value = array[index];\n\n while (++iterIndex < iterLength) {\n var data = iteratees[iterIndex],\n iteratee = data.iteratee,\n type = data.type,\n computed = iteratee(value);\n\n if (type == LAZY_MAP_FLAG) {\n value = computed;\n } else if (!computed) {\n if (type == LAZY_FILTER_FLAG) {\n continue outer;\n } else {\n break outer;\n }\n }\n }\n result[resIndex++] = value;\n }\n return result;\n }\n\n // Ensure `LazyWrapper` is an instance of `baseLodash`.\n LazyWrapper.prototype = baseCreate(baseLodash.prototype);\n LazyWrapper.prototype.constructor = LazyWrapper;\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates a hash object.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\n function Hash(entries) {\n var index = -1,\n length = entries == null ? 0 : entries.length;\n\n this.clear();\n while (++index < length) {\n var entry = entries[index];\n this.set(entry[0], entry[1]);\n }\n }\n\n /**\n * Removes all key-value entries from the hash.\n *\n * @private\n * @name clear\n * @memberOf Hash\n */\n function hashClear() {\n this.__data__ = nativeCreate ? nativeCreate(null) : {};\n this.size = 0;\n }\n\n /**\n * Removes `key` and its value from the hash.\n *\n * @private\n * @name delete\n * @memberOf Hash\n * @param {Object} hash The hash to modify.\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\n function hashDelete(key) {\n var result = this.has(key) && delete this.__data__[key];\n this.size -= result ? 1 : 0;\n return result;\n }\n\n /**\n * Gets the hash value for `key`.\n *\n * @private\n * @name get\n * @memberOf Hash\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\n function hashGet(key) {\n var data = this.__data__;\n if (nativeCreate) {\n var result = data[key];\n return result === HASH_UNDEFINED ? undefined : result;\n }\n return hasOwnProperty.call(data, key) ? data[key] : undefined;\n }\n\n /**\n * Checks if a hash value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf Hash\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\n function hashHas(key) {\n var data = this.__data__;\n return nativeCreate ? (data[key] !== undefined) : hasOwnProperty.call(data, key);\n }\n\n /**\n * Sets the hash `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf Hash\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the hash instance.\n */\n function hashSet(key, value) {\n var data = this.__data__;\n this.size += this.has(key) ? 0 : 1;\n data[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED : value;\n return this;\n }\n\n // Add methods to `Hash`.\n Hash.prototype.clear = hashClear;\n Hash.prototype['delete'] = hashDelete;\n Hash.prototype.get = hashGet;\n Hash.prototype.has = hashHas;\n Hash.prototype.set = hashSet;\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates an list cache object.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\n function ListCache(entries) {\n var index = -1,\n length = entries == null ? 0 : entries.length;\n\n this.clear();\n while (++index < length) {\n var entry = entries[index];\n this.set(entry[0], entry[1]);\n }\n }\n\n /**\n * Removes all key-value entries from the list cache.\n *\n * @private\n * @name clear\n * @memberOf ListCache\n */\n function listCacheClear() {\n this.__data__ = [];\n this.size = 0;\n }\n\n /**\n * Removes `key` and its value from the list cache.\n *\n * @private\n * @name delete\n * @memberOf ListCache\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\n function listCacheDelete(key) {\n var data = this.__data__,\n index = assocIndexOf(data, key);\n\n if (index < 0) {\n return false;\n }\n var lastIndex = data.length - 1;\n if (index == lastIndex) {\n data.pop();\n } else {\n splice.call(data, index, 1);\n }\n --this.size;\n return true;\n }\n\n /**\n * Gets the list cache value for `key`.\n *\n * @private\n * @name get\n * @memberOf ListCache\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\n function listCacheGet(key) {\n var data = this.__data__,\n index = assocIndexOf(data, key);\n\n return index < 0 ? undefined : data[index][1];\n }\n\n /**\n * Checks if a list cache value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf ListCache\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\n function listCacheHas(key) {\n return assocIndexOf(this.__data__, key) > -1;\n }\n\n /**\n * Sets the list cache `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf ListCache\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the list cache instance.\n */\n function listCacheSet(key, value) {\n var data = this.__data__,\n index = assocIndexOf(data, key);\n\n if (index < 0) {\n ++this.size;\n data.push([key, value]);\n } else {\n data[index][1] = value;\n }\n return this;\n }\n\n // Add methods to `ListCache`.\n ListCache.prototype.clear = listCacheClear;\n ListCache.prototype['delete'] = listCacheDelete;\n ListCache.prototype.get = listCacheGet;\n ListCache.prototype.has = listCacheHas;\n ListCache.prototype.set = listCacheSet;\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates a map cache object to store key-value pairs.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\n function MapCache(entries) {\n var index = -1,\n length = entries == null ? 0 : entries.length;\n\n this.clear();\n while (++index < length) {\n var entry = entries[index];\n this.set(entry[0], entry[1]);\n }\n }\n\n /**\n * Removes all key-value entries from the map.\n *\n * @private\n * @name clear\n * @memberOf MapCache\n */\n function mapCacheClear() {\n this.size = 0;\n this.__data__ = {\n 'hash': new Hash,\n 'map': new (Map || ListCache),\n 'string': new Hash\n };\n }\n\n /**\n * Removes `key` and its value from the map.\n *\n * @private\n * @name delete\n * @memberOf MapCache\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\n function mapCacheDelete(key) {\n var result = getMapData(this, key)['delete'](key);\n this.size -= result ? 1 : 0;\n return result;\n }\n\n /**\n * Gets the map value for `key`.\n *\n * @private\n * @name get\n * @memberOf MapCache\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\n function mapCacheGet(key) {\n return getMapData(this, key).get(key);\n }\n\n /**\n * Checks if a map value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf MapCache\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\n function mapCacheHas(key) {\n return getMapData(this, key).has(key);\n }\n\n /**\n * Sets the map `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf MapCache\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the map cache instance.\n */\n function mapCacheSet(key, value) {\n var data = getMapData(this, key),\n size = data.size;\n\n data.set(key, value);\n this.size += data.size == size ? 0 : 1;\n return this;\n }\n\n // Add methods to `MapCache`.\n MapCache.prototype.clear = mapCacheClear;\n MapCache.prototype['delete'] = mapCacheDelete;\n MapCache.prototype.get = mapCacheGet;\n MapCache.prototype.has = mapCacheHas;\n MapCache.prototype.set = mapCacheSet;\n\n /*------------------------------------------------------------------------*/\n\n /**\n *\n * Creates an array cache object to store unique values.\n *\n * @private\n * @constructor\n * @param {Array} [values] The values to cache.\n */\n function SetCache(values) {\n var index = -1,\n length = values == null ? 0 : values.length;\n\n this.__data__ = new MapCache;\n while (++index < length) {\n this.add(values[index]);\n }\n }\n\n /**\n * Adds `value` to the array cache.\n *\n * @private\n * @name add\n * @memberOf SetCache\n * @alias push\n * @param {*} value The value to cache.\n * @returns {Object} Returns the cache instance.\n */\n function setCacheAdd(value) {\n this.__data__.set(value, HASH_UNDEFINED);\n return this;\n }\n\n /**\n * Checks if `value` is in the array cache.\n *\n * @private\n * @name has\n * @memberOf SetCache\n * @param {*} value The value to search for.\n * @returns {number} Returns `true` if `value` is found, else `false`.\n */\n function setCacheHas(value) {\n return this.__data__.has(value);\n }\n\n // Add methods to `SetCache`.\n SetCache.prototype.add = SetCache.prototype.push = setCacheAdd;\n SetCache.prototype.has = setCacheHas;\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates a stack cache object to store key-value pairs.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\n function Stack(entries) {\n var data = this.__data__ = new ListCache(entries);\n this.size = data.size;\n }\n\n /**\n * Removes all key-value entries from the stack.\n *\n * @private\n * @name clear\n * @memberOf Stack\n */\n function stackClear() {\n this.__data__ = new ListCache;\n this.size = 0;\n }\n\n /**\n * Removes `key` and its value from the stack.\n *\n * @private\n * @name delete\n * @memberOf Stack\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\n function stackDelete(key) {\n var data = this.__data__,\n result = data['delete'](key);\n\n this.size = data.size;\n return result;\n }\n\n /**\n * Gets the stack value for `key`.\n *\n * @private\n * @name get\n * @memberOf Stack\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\n function stackGet(key) {\n return this.__data__.get(key);\n }\n\n /**\n * Checks if a stack value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf Stack\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\n function stackHas(key) {\n return this.__data__.has(key);\n }\n\n /**\n * Sets the stack `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf Stack\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the stack cache instance.\n */\n function stackSet(key, value) {\n var data = this.__data__;\n if (data instanceof ListCache) {\n var pairs = data.__data__;\n if (!Map || (pairs.length < LARGE_ARRAY_SIZE - 1)) {\n pairs.push([key, value]);\n this.size = ++data.size;\n return this;\n }\n data = this.__data__ = new MapCache(pairs);\n }\n data.set(key, value);\n this.size = data.size;\n return this;\n }\n\n // Add methods to `Stack`.\n Stack.prototype.clear = stackClear;\n Stack.prototype['delete'] = stackDelete;\n Stack.prototype.get = stackGet;\n Stack.prototype.has = stackHas;\n Stack.prototype.set = stackSet;\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates an array of the enumerable property names of the array-like `value`.\n *\n * @private\n * @param {*} value The value to query.\n * @param {boolean} inherited Specify returning inherited property names.\n * @returns {Array} Returns the array of property names.\n */\n function arrayLikeKeys(value, inherited) {\n var isArr = isArray(value),\n isArg = !isArr && isArguments(value),\n isBuff = !isArr && !isArg && isBuffer(value),\n isType = !isArr && !isArg && !isBuff && isTypedArray(value),\n skipIndexes = isArr || isArg || isBuff || isType,\n result = skipIndexes ? baseTimes(value.length, String) : [],\n length = result.length;\n\n for (var key in value) {\n if ((inherited || hasOwnProperty.call(value, key)) &&\n !(skipIndexes && (\n // Safari 9 has enumerable `arguments.length` in strict mode.\n key == 'length' ||\n // Node.js 0.10 has enumerable non-index properties on buffers.\n (isBuff && (key == 'offset' || key == 'parent')) ||\n // PhantomJS 2 has enumerable non-index properties on typed arrays.\n (isType && (key == 'buffer' || key == 'byteLength' || key == 'byteOffset')) ||\n // Skip index properties.\n isIndex(key, length)\n ))) {\n result.push(key);\n }\n }\n return result;\n }\n\n /**\n * A specialized version of `_.sample` for arrays.\n *\n * @private\n * @param {Array} array The array to sample.\n * @returns {*} Returns the random element.\n */\n function arraySample(array) {\n var length = array.length;\n return length ? array[baseRandom(0, length - 1)] : undefined;\n }\n\n /**\n * A specialized version of `_.sampleSize` for arrays.\n *\n * @private\n * @param {Array} array The array to sample.\n * @param {number} n The number of elements to sample.\n * @returns {Array} Returns the random elements.\n */\n function arraySampleSize(array, n) {\n return shuffleSelf(copyArray(array), baseClamp(n, 0, array.length));\n }\n\n /**\n * A specialized version of `_.shuffle` for arrays.\n *\n * @private\n * @param {Array} array The array to shuffle.\n * @returns {Array} Returns the new shuffled array.\n */\n function arrayShuffle(array) {\n return shuffleSelf(copyArray(array));\n }\n\n /**\n * This function is like `assignValue` except that it doesn't assign\n * `undefined` values.\n *\n * @private\n * @param {Object} object The object to modify.\n * @param {string} key The key of the property to assign.\n * @param {*} value The value to assign.\n */\n function assignMergeValue(object, key, value) {\n if ((value !== undefined && !eq(object[key], value)) ||\n (value === undefined && !(key in object))) {\n baseAssignValue(object, key, value);\n }\n }\n\n /**\n * Assigns `value` to `key` of `object` if the existing value is not equivalent\n * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons.\n *\n * @private\n * @param {Object} object The object to modify.\n * @param {string} key The key of the property to assign.\n * @param {*} value The value to assign.\n */\n function assignValue(object, key, value) {\n var objValue = object[key];\n if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) ||\n (value === undefined && !(key in object))) {\n baseAssignValue(object, key, value);\n }\n }\n\n /**\n * Gets the index at which the `key` is found in `array` of key-value pairs.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {*} key The key to search for.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\n function assocIndexOf(array, key) {\n var length = array.length;\n while (length--) {\n if (eq(array[length][0], key)) {\n return length;\n }\n }\n return -1;\n }\n\n /**\n * Aggregates elements of `collection` on `accumulator` with keys transformed\n * by `iteratee` and values set by `setter`.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} setter The function to set `accumulator` values.\n * @param {Function} iteratee The iteratee to transform keys.\n * @param {Object} accumulator The initial aggregated object.\n * @returns {Function} Returns `accumulator`.\n */\n function baseAggregator(collection, setter, iteratee, accumulator) {\n baseEach(collection, function(value, key, collection) {\n setter(accumulator, value, iteratee(value), collection);\n });\n return accumulator;\n }\n\n /**\n * The base implementation of `_.assign` without support for multiple sources\n * or `customizer` functions.\n *\n * @private\n * @param {Object} object The destination object.\n * @param {Object} source The source object.\n * @returns {Object} Returns `object`.\n */\n function baseAssign(object, source) {\n return object && copyObject(source, keys(source), object);\n }\n\n /**\n * The base implementation of `_.assignIn` without support for multiple sources\n * or `customizer` functions.\n *\n * @private\n * @param {Object} object The destination object.\n * @param {Object} source The source object.\n * @returns {Object} Returns `object`.\n */\n function baseAssignIn(object, source) {\n return object && copyObject(source, keysIn(source), object);\n }\n\n /**\n * The base implementation of `assignValue` and `assignMergeValue` without\n * value checks.\n *\n * @private\n * @param {Object} object The object to modify.\n * @param {string} key The key of the property to assign.\n * @param {*} value The value to assign.\n */\n function baseAssignValue(object, key, value) {\n if (key == '__proto__' && defineProperty) {\n defineProperty(object, key, {\n 'configurable': true,\n 'enumerable': true,\n 'value': value,\n 'writable': true\n });\n } else {\n object[key] = value;\n }\n }\n\n /**\n * The base implementation of `_.at` without support for individual paths.\n *\n * @private\n * @param {Object} object The object to iterate over.\n * @param {string[]} paths The property paths to pick.\n * @returns {Array} Returns the picked elements.\n */\n function baseAt(object, paths) {\n var index = -1,\n length = paths.length,\n result = Array(length),\n skip = object == null;\n\n while (++index < length) {\n result[index] = skip ? undefined : get(object, paths[index]);\n }\n return result;\n }\n\n /**\n * The base implementation of `_.clamp` which doesn't coerce arguments.\n *\n * @private\n * @param {number} number The number to clamp.\n * @param {number} [lower] The lower bound.\n * @param {number} upper The upper bound.\n * @returns {number} Returns the clamped number.\n */\n function baseClamp(number, lower, upper) {\n if (number === number) {\n if (upper !== undefined) {\n number = number <= upper ? number : upper;\n }\n if (lower !== undefined) {\n number = number >= lower ? number : lower;\n }\n }\n return number;\n }\n\n /**\n * The base implementation of `_.clone` and `_.cloneDeep` which tracks\n * traversed objects.\n *\n * @private\n * @param {*} value The value to clone.\n * @param {boolean} bitmask The bitmask flags.\n * 1 - Deep clone\n * 2 - Flatten inherited properties\n * 4 - Clone symbols\n * @param {Function} [customizer] The function to customize cloning.\n * @param {string} [key] The key of `value`.\n * @param {Object} [object] The parent object of `value`.\n * @param {Object} [stack] Tracks traversed objects and their clone counterparts.\n * @returns {*} Returns the cloned value.\n */\n function baseClone(value, bitmask, customizer, key, object, stack) {\n var result,\n isDeep = bitmask & CLONE_DEEP_FLAG,\n isFlat = bitmask & CLONE_FLAT_FLAG,\n isFull = bitmask & CLONE_SYMBOLS_FLAG;\n\n if (customizer) {\n result = object ? customizer(value, key, object, stack) : customizer(value);\n }\n if (result !== undefined) {\n return result;\n }\n if (!isObject(value)) {\n return value;\n }\n var isArr = isArray(value);\n if (isArr) {\n result = initCloneArray(value);\n if (!isDeep) {\n return copyArray(value, result);\n }\n } else {\n var tag = getTag(value),\n isFunc = tag == funcTag || tag == genTag;\n\n if (isBuffer(value)) {\n return cloneBuffer(value, isDeep);\n }\n if (tag == objectTag || tag == argsTag || (isFunc && !object)) {\n result = (isFlat || isFunc) ? {} : initCloneObject(value);\n if (!isDeep) {\n return isFlat\n ? copySymbolsIn(value, baseAssignIn(result, value))\n : copySymbols(value, baseAssign(result, value));\n }\n } else {\n if (!cloneableTags[tag]) {\n return object ? value : {};\n }\n result = initCloneByTag(value, tag, isDeep);\n }\n }\n // Check for circular references and return its corresponding clone.\n stack || (stack = new Stack);\n var stacked = stack.get(value);\n if (stacked) {\n return stacked;\n }\n stack.set(value, result);\n\n if (isSet(value)) {\n value.forEach(function(subValue) {\n result.add(baseClone(subValue, bitmask, customizer, subValue, value, stack));\n });\n } else if (isMap(value)) {\n value.forEach(function(subValue, key) {\n result.set(key, baseClone(subValue, bitmask, customizer, key, value, stack));\n });\n }\n\n var keysFunc = isFull\n ? (isFlat ? getAllKeysIn : getAllKeys)\n : (isFlat ? keysIn : keys);\n\n var props = isArr ? undefined : keysFunc(value);\n arrayEach(props || value, function(subValue, key) {\n if (props) {\n key = subValue;\n subValue = value[key];\n }\n // Recursively populate clone (susceptible to call stack limits).\n assignValue(result, key, baseClone(subValue, bitmask, customizer, key, value, stack));\n });\n return result;\n }\n\n /**\n * The base implementation of `_.conforms` which doesn't clone `source`.\n *\n * @private\n * @param {Object} source The object of property predicates to conform to.\n * @returns {Function} Returns the new spec function.\n */\n function baseConforms(source) {\n var props = keys(source);\n return function(object) {\n return baseConformsTo(object, source, props);\n };\n }\n\n /**\n * The base implementation of `_.conformsTo` which accepts `props` to check.\n *\n * @private\n * @param {Object} object The object to inspect.\n * @param {Object} source The object of property predicates to conform to.\n * @returns {boolean} Returns `true` if `object` conforms, else `false`.\n */\n function baseConformsTo(object, source, props) {\n var length = props.length;\n if (object == null) {\n return !length;\n }\n object = Object(object);\n while (length--) {\n var key = props[length],\n predicate = source[key],\n value = object[key];\n\n if ((value === undefined && !(key in object)) || !predicate(value)) {\n return false;\n }\n }\n return true;\n }\n\n /**\n * The base implementation of `_.delay` and `_.defer` which accepts `args`\n * to provide to `func`.\n *\n * @private\n * @param {Function} func The function to delay.\n * @param {number} wait The number of milliseconds to delay invocation.\n * @param {Array} args The arguments to provide to `func`.\n * @returns {number|Object} Returns the timer id or timeout object.\n */\n function baseDelay(func, wait, args) {\n if (typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n return setTimeout(function() { func.apply(undefined, args); }, wait);\n }\n\n /**\n * The base implementation of methods like `_.difference` without support\n * for excluding multiple arrays or iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {Array} values The values to exclude.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n */\n function baseDifference(array, values, iteratee, comparator) {\n var index = -1,\n includes = arrayIncludes,\n isCommon = true,\n length = array.length,\n result = [],\n valuesLength = values.length;\n\n if (!length) {\n return result;\n }\n if (iteratee) {\n values = arrayMap(values, baseUnary(iteratee));\n }\n if (comparator) {\n includes = arrayIncludesWith;\n isCommon = false;\n }\n else if (values.length >= LARGE_ARRAY_SIZE) {\n includes = cacheHas;\n isCommon = false;\n values = new SetCache(values);\n }\n outer:\n while (++index < length) {\n var value = array[index],\n computed = iteratee == null ? value : iteratee(value);\n\n value = (comparator || value !== 0) ? value : 0;\n if (isCommon && computed === computed) {\n var valuesIndex = valuesLength;\n while (valuesIndex--) {\n if (values[valuesIndex] === computed) {\n continue outer;\n }\n }\n result.push(value);\n }\n else if (!includes(values, computed, comparator)) {\n result.push(value);\n }\n }\n return result;\n }\n\n /**\n * The base implementation of `_.forEach` without support for iteratee shorthands.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array|Object} Returns `collection`.\n */\n var baseEach = createBaseEach(baseForOwn);\n\n /**\n * The base implementation of `_.forEachRight` without support for iteratee shorthands.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array|Object} Returns `collection`.\n */\n var baseEachRight = createBaseEach(baseForOwnRight, true);\n\n /**\n * The base implementation of `_.every` without support for iteratee shorthands.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {boolean} Returns `true` if all elements pass the predicate check,\n * else `false`\n */\n function baseEvery(collection, predicate) {\n var result = true;\n baseEach(collection, function(value, index, collection) {\n result = !!predicate(value, index, collection);\n return result;\n });\n return result;\n }\n\n /**\n * The base implementation of methods like `_.max` and `_.min` which accepts a\n * `comparator` to determine the extremum value.\n *\n * @private\n * @param {Array} array The array to iterate over.\n * @param {Function} iteratee The iteratee invoked per iteration.\n * @param {Function} comparator The comparator used to compare values.\n * @returns {*} Returns the extremum value.\n */\n function baseExtremum(array, iteratee, comparator) {\n var index = -1,\n length = array.length;\n\n while (++index < length) {\n var value = array[index],\n current = iteratee(value);\n\n if (current != null && (computed === undefined\n ? (current === current && !isSymbol(current))\n : comparator(current, computed)\n )) {\n var computed = current,\n result = value;\n }\n }\n return result;\n }\n\n /**\n * The base implementation of `_.fill` without an iteratee call guard.\n *\n * @private\n * @param {Array} array The array to fill.\n * @param {*} value The value to fill `array` with.\n * @param {number} [start=0] The start position.\n * @param {number} [end=array.length] The end position.\n * @returns {Array} Returns `array`.\n */\n function baseFill(array, value, start, end) {\n var length = array.length;\n\n start = toInteger(start);\n if (start < 0) {\n start = -start > length ? 0 : (length + start);\n }\n end = (end === undefined || end > length) ? length : toInteger(end);\n if (end < 0) {\n end += length;\n }\n end = start > end ? 0 : toLength(end);\n while (start < end) {\n array[start++] = value;\n }\n return array;\n }\n\n /**\n * The base implementation of `_.filter` without support for iteratee shorthands.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {Array} Returns the new filtered array.\n */\n function baseFilter(collection, predicate) {\n var result = [];\n baseEach(collection, function(value, index, collection) {\n if (predicate(value, index, collection)) {\n result.push(value);\n }\n });\n return result;\n }\n\n /**\n * The base implementation of `_.flatten` with support for restricting flattening.\n *\n * @private\n * @param {Array} array The array to flatten.\n * @param {number} depth The maximum recursion depth.\n * @param {boolean} [predicate=isFlattenable] The function invoked per iteration.\n * @param {boolean} [isStrict] Restrict to values that pass `predicate` checks.\n * @param {Array} [result=[]] The initial result value.\n * @returns {Array} Returns the new flattened array.\n */\n function baseFlatten(array, depth, predicate, isStrict, result) {\n var index = -1,\n length = array.length;\n\n predicate || (predicate = isFlattenable);\n result || (result = []);\n\n while (++index < length) {\n var value = array[index];\n if (depth > 0 && predicate(value)) {\n if (depth > 1) {\n // Recursively flatten arrays (susceptible to call stack limits).\n baseFlatten(value, depth - 1, predicate, isStrict, result);\n } else {\n arrayPush(result, value);\n }\n } else if (!isStrict) {\n result[result.length] = value;\n }\n }\n return result;\n }\n\n /**\n * The base implementation of `baseForOwn` which iterates over `object`\n * properties returned by `keysFunc` and invokes `iteratee` for each property.\n * Iteratee functions may exit iteration early by explicitly returning `false`.\n *\n * @private\n * @param {Object} object The object to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @param {Function} keysFunc The function to get the keys of `object`.\n * @returns {Object} Returns `object`.\n */\n var baseFor = createBaseFor();\n\n /**\n * This function is like `baseFor` except that it iterates over properties\n * in the opposite order.\n *\n * @private\n * @param {Object} object The object to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @param {Function} keysFunc The function to get the keys of `object`.\n * @returns {Object} Returns `object`.\n */\n var baseForRight = createBaseFor(true);\n\n /**\n * The base implementation of `_.forOwn` without support for iteratee shorthands.\n *\n * @private\n * @param {Object} object The object to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Object} Returns `object`.\n */\n function baseForOwn(object, iteratee) {\n return object && baseFor(object, iteratee, keys);\n }\n\n /**\n * The base implementation of `_.forOwnRight` without support for iteratee shorthands.\n *\n * @private\n * @param {Object} object The object to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Object} Returns `object`.\n */\n function baseForOwnRight(object, iteratee) {\n return object && baseForRight(object, iteratee, keys);\n }\n\n /**\n * The base implementation of `_.functions` which creates an array of\n * `object` function property names filtered from `props`.\n *\n * @private\n * @param {Object} object The object to inspect.\n * @param {Array} props The property names to filter.\n * @returns {Array} Returns the function names.\n */\n function baseFunctions(object, props) {\n return arrayFilter(props, function(key) {\n return isFunction(object[key]);\n });\n }\n\n /**\n * The base implementation of `_.get` without support for default values.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array|string} path The path of the property to get.\n * @returns {*} Returns the resolved value.\n */\n function baseGet(object, path) {\n path = castPath(path, object);\n\n var index = 0,\n length = path.length;\n\n while (object != null && index < length) {\n object = object[toKey(path[index++])];\n }\n return (index && index == length) ? object : undefined;\n }\n\n /**\n * The base implementation of `getAllKeys` and `getAllKeysIn` which uses\n * `keysFunc` and `symbolsFunc` to get the enumerable property names and\n * symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Function} keysFunc The function to get the keys of `object`.\n * @param {Function} symbolsFunc The function to get the symbols of `object`.\n * @returns {Array} Returns the array of property names and symbols.\n */\n function baseGetAllKeys(object, keysFunc, symbolsFunc) {\n var result = keysFunc(object);\n return isArray(object) ? result : arrayPush(result, symbolsFunc(object));\n }\n\n /**\n * The base implementation of `getTag` without fallbacks for buggy environments.\n *\n * @private\n * @param {*} value The value to query.\n * @returns {string} Returns the `toStringTag`.\n */\n function baseGetTag(value) {\n if (value == null) {\n return value === undefined ? undefinedTag : nullTag;\n }\n return (symToStringTag && symToStringTag in Object(value))\n ? getRawTag(value)\n : objectToString(value);\n }\n\n /**\n * The base implementation of `_.gt` which doesn't coerce arguments.\n *\n * @private\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if `value` is greater than `other`,\n * else `false`.\n */\n function baseGt(value, other) {\n return value > other;\n }\n\n /**\n * The base implementation of `_.has` without support for deep paths.\n *\n * @private\n * @param {Object} [object] The object to query.\n * @param {Array|string} key The key to check.\n * @returns {boolean} Returns `true` if `key` exists, else `false`.\n */\n function baseHas(object, key) {\n return object != null && hasOwnProperty.call(object, key);\n }\n\n /**\n * The base implementation of `_.hasIn` without support for deep paths.\n *\n * @private\n * @param {Object} [object] The object to query.\n * @param {Array|string} key The key to check.\n * @returns {boolean} Returns `true` if `key` exists, else `false`.\n */\n function baseHasIn(object, key) {\n return object != null && key in Object(object);\n }\n\n /**\n * The base implementation of `_.inRange` which doesn't coerce arguments.\n *\n * @private\n * @param {number} number The number to check.\n * @param {number} start The start of the range.\n * @param {number} end The end of the range.\n * @returns {boolean} Returns `true` if `number` is in the range, else `false`.\n */\n function baseInRange(number, start, end) {\n return number >= nativeMin(start, end) && number < nativeMax(start, end);\n }\n\n /**\n * The base implementation of methods like `_.intersection`, without support\n * for iteratee shorthands, that accepts an array of arrays to inspect.\n *\n * @private\n * @param {Array} arrays The arrays to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of shared values.\n */\n function baseIntersection(arrays, iteratee, comparator) {\n var includes = comparator ? arrayIncludesWith : arrayIncludes,\n length = arrays[0].length,\n othLength = arrays.length,\n othIndex = othLength,\n caches = Array(othLength),\n maxLength = Infinity,\n result = [];\n\n while (othIndex--) {\n var array = arrays[othIndex];\n if (othIndex && iteratee) {\n array = arrayMap(array, baseUnary(iteratee));\n }\n maxLength = nativeMin(array.length, maxLength);\n caches[othIndex] = !comparator && (iteratee || (length >= 120 && array.length >= 120))\n ? new SetCache(othIndex && array)\n : undefined;\n }\n array = arrays[0];\n\n var index = -1,\n seen = caches[0];\n\n outer:\n while (++index < length && result.length < maxLength) {\n var value = array[index],\n computed = iteratee ? iteratee(value) : value;\n\n value = (comparator || value !== 0) ? value : 0;\n if (!(seen\n ? cacheHas(seen, computed)\n : includes(result, computed, comparator)\n )) {\n othIndex = othLength;\n while (--othIndex) {\n var cache = caches[othIndex];\n if (!(cache\n ? cacheHas(cache, computed)\n : includes(arrays[othIndex], computed, comparator))\n ) {\n continue outer;\n }\n }\n if (seen) {\n seen.push(computed);\n }\n result.push(value);\n }\n }\n return result;\n }\n\n /**\n * The base implementation of `_.invert` and `_.invertBy` which inverts\n * `object` with values transformed by `iteratee` and set by `setter`.\n *\n * @private\n * @param {Object} object The object to iterate over.\n * @param {Function} setter The function to set `accumulator` values.\n * @param {Function} iteratee The iteratee to transform values.\n * @param {Object} accumulator The initial inverted object.\n * @returns {Function} Returns `accumulator`.\n */\n function baseInverter(object, setter, iteratee, accumulator) {\n baseForOwn(object, function(value, key, object) {\n setter(accumulator, iteratee(value), key, object);\n });\n return accumulator;\n }\n\n /**\n * The base implementation of `_.invoke` without support for individual\n * method arguments.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array|string} path The path of the method to invoke.\n * @param {Array} args The arguments to invoke the method with.\n * @returns {*} Returns the result of the invoked method.\n */\n function baseInvoke(object, path, args) {\n path = castPath(path, object);\n object = parent(object, path);\n var func = object == null ? object : object[toKey(last(path))];\n return func == null ? undefined : apply(func, object, args);\n }\n\n /**\n * The base implementation of `_.isArguments`.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an `arguments` object,\n */\n function baseIsArguments(value) {\n return isObjectLike(value) && baseGetTag(value) == argsTag;\n }\n\n /**\n * The base implementation of `_.isArrayBuffer` without Node.js optimizations.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.\n */\n function baseIsArrayBuffer(value) {\n return isObjectLike(value) && baseGetTag(value) == arrayBufferTag;\n }\n\n /**\n * The base implementation of `_.isDate` without Node.js optimizations.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a date object, else `false`.\n */\n function baseIsDate(value) {\n return isObjectLike(value) && baseGetTag(value) == dateTag;\n }\n\n /**\n * The base implementation of `_.isEqual` which supports partial comparisons\n * and tracks traversed objects.\n *\n * @private\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @param {boolean} bitmask The bitmask flags.\n * 1 - Unordered comparison\n * 2 - Partial comparison\n * @param {Function} [customizer] The function to customize comparisons.\n * @param {Object} [stack] Tracks traversed `value` and `other` objects.\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n */\n function baseIsEqual(value, other, bitmask, customizer, stack) {\n if (value === other) {\n return true;\n }\n if (value == null || other == null || (!isObjectLike(value) && !isObjectLike(other))) {\n return value !== value && other !== other;\n }\n return baseIsEqualDeep(value, other, bitmask, customizer, baseIsEqual, stack);\n }\n\n /**\n * A specialized version of `baseIsEqual` for arrays and objects which performs\n * deep comparisons and tracks traversed objects enabling objects with circular\n * references to be compared.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n * @param {Function} customizer The function to customize comparisons.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Object} [stack] Tracks traversed `object` and `other` objects.\n * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n */\n function baseIsEqualDeep(object, other, bitmask, customizer, equalFunc, stack) {\n var objIsArr = isArray(object),\n othIsArr = isArray(other),\n objTag = objIsArr ? arrayTag : getTag(object),\n othTag = othIsArr ? arrayTag : getTag(other);\n\n objTag = objTag == argsTag ? objectTag : objTag;\n othTag = othTag == argsTag ? objectTag : othTag;\n\n var objIsObj = objTag == objectTag,\n othIsObj = othTag == objectTag,\n isSameTag = objTag == othTag;\n\n if (isSameTag && isBuffer(object)) {\n if (!isBuffer(other)) {\n return false;\n }\n objIsArr = true;\n objIsObj = false;\n }\n if (isSameTag && !objIsObj) {\n stack || (stack = new Stack);\n return (objIsArr || isTypedArray(object))\n ? equalArrays(object, other, bitmask, customizer, equalFunc, stack)\n : equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack);\n }\n if (!(bitmask & COMPARE_PARTIAL_FLAG)) {\n var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'),\n othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__');\n\n if (objIsWrapped || othIsWrapped) {\n var objUnwrapped = objIsWrapped ? object.value() : object,\n othUnwrapped = othIsWrapped ? other.value() : other;\n\n stack || (stack = new Stack);\n return equalFunc(objUnwrapped, othUnwrapped, bitmask, customizer, stack);\n }\n }\n if (!isSameTag) {\n return false;\n }\n stack || (stack = new Stack);\n return equalObjects(object, other, bitmask, customizer, equalFunc, stack);\n }\n\n /**\n * The base implementation of `_.isMap` without Node.js optimizations.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a map, else `false`.\n */\n function baseIsMap(value) {\n return isObjectLike(value) && getTag(value) == mapTag;\n }\n\n /**\n * The base implementation of `_.isMatch` without support for iteratee shorthands.\n *\n * @private\n * @param {Object} object The object to inspect.\n * @param {Object} source The object of property values to match.\n * @param {Array} matchData The property names, values, and compare flags to match.\n * @param {Function} [customizer] The function to customize comparisons.\n * @returns {boolean} Returns `true` if `object` is a match, else `false`.\n */\n function baseIsMatch(object, source, matchData, customizer) {\n var index = matchData.length,\n length = index,\n noCustomizer = !customizer;\n\n if (object == null) {\n return !length;\n }\n object = Object(object);\n while (index--) {\n var data = matchData[index];\n if ((noCustomizer && data[2])\n ? data[1] !== object[data[0]]\n : !(data[0] in object)\n ) {\n return false;\n }\n }\n while (++index < length) {\n data = matchData[index];\n var key = data[0],\n objValue = object[key],\n srcValue = data[1];\n\n if (noCustomizer && data[2]) {\n if (objValue === undefined && !(key in object)) {\n return false;\n }\n } else {\n var stack = new Stack;\n if (customizer) {\n var result = customizer(objValue, srcValue, key, object, source, stack);\n }\n if (!(result === undefined\n ? baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG, customizer, stack)\n : result\n )) {\n return false;\n }\n }\n }\n return true;\n }\n\n /**\n * The base implementation of `_.isNative` without bad shim checks.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a native function,\n * else `false`.\n */\n function baseIsNative(value) {\n if (!isObject(value) || isMasked(value)) {\n return false;\n }\n var pattern = isFunction(value) ? reIsNative : reIsHostCtor;\n return pattern.test(toSource(value));\n }\n\n /**\n * The base implementation of `_.isRegExp` without Node.js optimizations.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.\n */\n function baseIsRegExp(value) {\n return isObjectLike(value) && baseGetTag(value) == regexpTag;\n }\n\n /**\n * The base implementation of `_.isSet` without Node.js optimizations.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a set, else `false`.\n */\n function baseIsSet(value) {\n return isObjectLike(value) && getTag(value) == setTag;\n }\n\n /**\n * The base implementation of `_.isTypedArray` without Node.js optimizations.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.\n */\n function baseIsTypedArray(value) {\n return isObjectLike(value) &&\n isLength(value.length) && !!typedArrayTags[baseGetTag(value)];\n }\n\n /**\n * The base implementation of `_.iteratee`.\n *\n * @private\n * @param {*} [value=_.identity] The value to convert to an iteratee.\n * @returns {Function} Returns the iteratee.\n */\n function baseIteratee(value) {\n // Don't store the `typeof` result in a variable to avoid a JIT bug in Safari 9.\n // See https://bugs.webkit.org/show_bug.cgi?id=156034 for more details.\n if (typeof value == 'function') {\n return value;\n }\n if (value == null) {\n return identity;\n }\n if (typeof value == 'object') {\n return isArray(value)\n ? baseMatchesProperty(value[0], value[1])\n : baseMatches(value);\n }\n return property(value);\n }\n\n /**\n * The base implementation of `_.keys` which doesn't treat sparse arrays as dense.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n */\n function baseKeys(object) {\n if (!isPrototype(object)) {\n return nativeKeys(object);\n }\n var result = [];\n for (var key in Object(object)) {\n if (hasOwnProperty.call(object, key) && key != 'constructor') {\n result.push(key);\n }\n }\n return result;\n }\n\n /**\n * The base implementation of `_.keysIn` which doesn't treat sparse arrays as dense.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n */\n function baseKeysIn(object) {\n if (!isObject(object)) {\n return nativeKeysIn(object);\n }\n var isProto = isPrototype(object),\n result = [];\n\n for (var key in object) {\n if (!(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) {\n result.push(key);\n }\n }\n return result;\n }\n\n /**\n * The base implementation of `_.lt` which doesn't coerce arguments.\n *\n * @private\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if `value` is less than `other`,\n * else `false`.\n */\n function baseLt(value, other) {\n return value < other;\n }\n\n /**\n * The base implementation of `_.map` without support for iteratee shorthands.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns the new mapped array.\n */\n function baseMap(collection, iteratee) {\n var index = -1,\n result = isArrayLike(collection) ? Array(collection.length) : [];\n\n baseEach(collection, function(value, key, collection) {\n result[++index] = iteratee(value, key, collection);\n });\n return result;\n }\n\n /**\n * The base implementation of `_.matches` which doesn't clone `source`.\n *\n * @private\n * @param {Object} source The object of property values to match.\n * @returns {Function} Returns the new spec function.\n */\n function baseMatches(source) {\n var matchData = getMatchData(source);\n if (matchData.length == 1 && matchData[0][2]) {\n return matchesStrictComparable(matchData[0][0], matchData[0][1]);\n }\n return function(object) {\n return object === source || baseIsMatch(object, source, matchData);\n };\n }\n\n /**\n * The base implementation of `_.matchesProperty` which doesn't clone `srcValue`.\n *\n * @private\n * @param {string} path The path of the property to get.\n * @param {*} srcValue The value to match.\n * @returns {Function} Returns the new spec function.\n */\n function baseMatchesProperty(path, srcValue) {\n if (isKey(path) && isStrictComparable(srcValue)) {\n return matchesStrictComparable(toKey(path), srcValue);\n }\n return function(object) {\n var objValue = get(object, path);\n return (objValue === undefined && objValue === srcValue)\n ? hasIn(object, path)\n : baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG);\n };\n }\n\n /**\n * The base implementation of `_.merge` without support for multiple sources.\n *\n * @private\n * @param {Object} object The destination object.\n * @param {Object} source The source object.\n * @param {number} srcIndex The index of `source`.\n * @param {Function} [customizer] The function to customize merged values.\n * @param {Object} [stack] Tracks traversed source values and their merged\n * counterparts.\n */\n function baseMerge(object, source, srcIndex, customizer, stack) {\n if (object === source) {\n return;\n }\n baseFor(source, function(srcValue, key) {\n stack || (stack = new Stack);\n if (isObject(srcValue)) {\n baseMergeDeep(object, source, key, srcIndex, baseMerge, customizer, stack);\n }\n else {\n var newValue = customizer\n ? customizer(safeGet(object, key), srcValue, (key + ''), object, source, stack)\n : undefined;\n\n if (newValue === undefined) {\n newValue = srcValue;\n }\n assignMergeValue(object, key, newValue);\n }\n }, keysIn);\n }\n\n /**\n * A specialized version of `baseMerge` for arrays and objects which performs\n * deep merges and tracks traversed objects enabling objects with circular\n * references to be merged.\n *\n * @private\n * @param {Object} object The destination object.\n * @param {Object} source The source object.\n * @param {string} key The key of the value to merge.\n * @param {number} srcIndex The index of `source`.\n * @param {Function} mergeFunc The function to merge values.\n * @param {Function} [customizer] The function to customize assigned values.\n * @param {Object} [stack] Tracks traversed source values and their merged\n * counterparts.\n */\n function baseMergeDeep(object, source, key, srcIndex, mergeFunc, customizer, stack) {\n var objValue = safeGet(object, key),\n srcValue = safeGet(source, key),\n stacked = stack.get(srcValue);\n\n if (stacked) {\n assignMergeValue(object, key, stacked);\n return;\n }\n var newValue = customizer\n ? customizer(objValue, srcValue, (key + ''), object, source, stack)\n : undefined;\n\n var isCommon = newValue === undefined;\n\n if (isCommon) {\n var isArr = isArray(srcValue),\n isBuff = !isArr && isBuffer(srcValue),\n isTyped = !isArr && !isBuff && isTypedArray(srcValue);\n\n newValue = srcValue;\n if (isArr || isBuff || isTyped) {\n if (isArray(objValue)) {\n newValue = objValue;\n }\n else if (isArrayLikeObject(objValue)) {\n newValue = copyArray(objValue);\n }\n else if (isBuff) {\n isCommon = false;\n newValue = cloneBuffer(srcValue, true);\n }\n else if (isTyped) {\n isCommon = false;\n newValue = cloneTypedArray(srcValue, true);\n }\n else {\n newValue = [];\n }\n }\n else if (isPlainObject(srcValue) || isArguments(srcValue)) {\n newValue = objValue;\n if (isArguments(objValue)) {\n newValue = toPlainObject(objValue);\n }\n else if (!isObject(objValue) || isFunction(objValue)) {\n newValue = initCloneObject(srcValue);\n }\n }\n else {\n isCommon = false;\n }\n }\n if (isCommon) {\n // Recursively merge objects and arrays (susceptible to call stack limits).\n stack.set(srcValue, newValue);\n mergeFunc(newValue, srcValue, srcIndex, customizer, stack);\n stack['delete'](srcValue);\n }\n assignMergeValue(object, key, newValue);\n }\n\n /**\n * The base implementation of `_.nth` which doesn't coerce arguments.\n *\n * @private\n * @param {Array} array The array to query.\n * @param {number} n The index of the element to return.\n * @returns {*} Returns the nth element of `array`.\n */\n function baseNth(array, n) {\n var length = array.length;\n if (!length) {\n return;\n }\n n += n < 0 ? length : 0;\n return isIndex(n, length) ? array[n] : undefined;\n }\n\n /**\n * The base implementation of `_.orderBy` without param guards.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function[]|Object[]|string[]} iteratees The iteratees to sort by.\n * @param {string[]} orders The sort orders of `iteratees`.\n * @returns {Array} Returns the new sorted array.\n */\n function baseOrderBy(collection, iteratees, orders) {\n if (iteratees.length) {\n iteratees = arrayMap(iteratees, function(iteratee) {\n if (isArray(iteratee)) {\n return function(value) {\n return baseGet(value, iteratee.length === 1 ? iteratee[0] : iteratee);\n }\n }\n return iteratee;\n });\n } else {\n iteratees = [identity];\n }\n\n var index = -1;\n iteratees = arrayMap(iteratees, baseUnary(getIteratee()));\n\n var result = baseMap(collection, function(value, key, collection) {\n var criteria = arrayMap(iteratees, function(iteratee) {\n return iteratee(value);\n });\n return { 'criteria': criteria, 'index': ++index, 'value': value };\n });\n\n return baseSortBy(result, function(object, other) {\n return compareMultiple(object, other, orders);\n });\n }\n\n /**\n * The base implementation of `_.pick` without support for individual\n * property identifiers.\n *\n * @private\n * @param {Object} object The source object.\n * @param {string[]} paths The property paths to pick.\n * @returns {Object} Returns the new object.\n */\n function basePick(object, paths) {\n return basePickBy(object, paths, function(value, path) {\n return hasIn(object, path);\n });\n }\n\n /**\n * The base implementation of `_.pickBy` without support for iteratee shorthands.\n *\n * @private\n * @param {Object} object The source object.\n * @param {string[]} paths The property paths to pick.\n * @param {Function} predicate The function invoked per property.\n * @returns {Object} Returns the new object.\n */\n function basePickBy(object, paths, predicate) {\n var index = -1,\n length = paths.length,\n result = {};\n\n while (++index < length) {\n var path = paths[index],\n value = baseGet(object, path);\n\n if (predicate(value, path)) {\n baseSet(result, castPath(path, object), value);\n }\n }\n return result;\n }\n\n /**\n * A specialized version of `baseProperty` which supports deep paths.\n *\n * @private\n * @param {Array|string} path The path of the property to get.\n * @returns {Function} Returns the new accessor function.\n */\n function basePropertyDeep(path) {\n return function(object) {\n return baseGet(object, path);\n };\n }\n\n /**\n * The base implementation of `_.pullAllBy` without support for iteratee\n * shorthands.\n *\n * @private\n * @param {Array} array The array to modify.\n * @param {Array} values The values to remove.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns `array`.\n */\n function basePullAll(array, values, iteratee, comparator) {\n var indexOf = comparator ? baseIndexOfWith : baseIndexOf,\n index = -1,\n length = values.length,\n seen = array;\n\n if (array === values) {\n values = copyArray(values);\n }\n if (iteratee) {\n seen = arrayMap(array, baseUnary(iteratee));\n }\n while (++index < length) {\n var fromIndex = 0,\n value = values[index],\n computed = iteratee ? iteratee(value) : value;\n\n while ((fromIndex = indexOf(seen, computed, fromIndex, comparator)) > -1) {\n if (seen !== array) {\n splice.call(seen, fromIndex, 1);\n }\n splice.call(array, fromIndex, 1);\n }\n }\n return array;\n }\n\n /**\n * The base implementation of `_.pullAt` without support for individual\n * indexes or capturing the removed elements.\n *\n * @private\n * @param {Array} array The array to modify.\n * @param {number[]} indexes The indexes of elements to remove.\n * @returns {Array} Returns `array`.\n */\n function basePullAt(array, indexes) {\n var length = array ? indexes.length : 0,\n lastIndex = length - 1;\n\n while (length--) {\n var index = indexes[length];\n if (length == lastIndex || index !== previous) {\n var previous = index;\n if (isIndex(index)) {\n splice.call(array, index, 1);\n } else {\n baseUnset(array, index);\n }\n }\n }\n return array;\n }\n\n /**\n * The base implementation of `_.random` without support for returning\n * floating-point numbers.\n *\n * @private\n * @param {number} lower The lower bound.\n * @param {number} upper The upper bound.\n * @returns {number} Returns the random number.\n */\n function baseRandom(lower, upper) {\n return lower + nativeFloor(nativeRandom() * (upper - lower + 1));\n }\n\n /**\n * The base implementation of `_.range` and `_.rangeRight` which doesn't\n * coerce arguments.\n *\n * @private\n * @param {number} start The start of the range.\n * @param {number} end The end of the range.\n * @param {number} step The value to increment or decrement by.\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {Array} Returns the range of numbers.\n */\n function baseRange(start, end, step, fromRight) {\n var index = -1,\n length = nativeMax(nativeCeil((end - start) / (step || 1)), 0),\n result = Array(length);\n\n while (length--) {\n result[fromRight ? length : ++index] = start;\n start += step;\n }\n return result;\n }\n\n /**\n * The base implementation of `_.repeat` which doesn't coerce arguments.\n *\n * @private\n * @param {string} string The string to repeat.\n * @param {number} n The number of times to repeat the string.\n * @returns {string} Returns the repeated string.\n */\n function baseRepeat(string, n) {\n var result = '';\n if (!string || n < 1 || n > MAX_SAFE_INTEGER) {\n return result;\n }\n // Leverage the exponentiation by squaring algorithm for a faster repeat.\n // See https://en.wikipedia.org/wiki/Exponentiation_by_squaring for more details.\n do {\n if (n % 2) {\n result += string;\n }\n n = nativeFloor(n / 2);\n if (n) {\n string += string;\n }\n } while (n);\n\n return result;\n }\n\n /**\n * The base implementation of `_.rest` which doesn't validate or coerce arguments.\n *\n * @private\n * @param {Function} func The function to apply a rest parameter to.\n * @param {number} [start=func.length-1] The start position of the rest parameter.\n * @returns {Function} Returns the new function.\n */\n function baseRest(func, start) {\n return setToString(overRest(func, start, identity), func + '');\n }\n\n /**\n * The base implementation of `_.sample`.\n *\n * @private\n * @param {Array|Object} collection The collection to sample.\n * @returns {*} Returns the random element.\n */\n function baseSample(collection) {\n return arraySample(values(collection));\n }\n\n /**\n * The base implementation of `_.sampleSize` without param guards.\n *\n * @private\n * @param {Array|Object} collection The collection to sample.\n * @param {number} n The number of elements to sample.\n * @returns {Array} Returns the random elements.\n */\n function baseSampleSize(collection, n) {\n var array = values(collection);\n return shuffleSelf(array, baseClamp(n, 0, array.length));\n }\n\n /**\n * The base implementation of `_.set`.\n *\n * @private\n * @param {Object} object The object to modify.\n * @param {Array|string} path The path of the property to set.\n * @param {*} value The value to set.\n * @param {Function} [customizer] The function to customize path creation.\n * @returns {Object} Returns `object`.\n */\n function baseSet(object, path, value, customizer) {\n if (!isObject(object)) {\n return object;\n }\n path = castPath(path, object);\n\n var index = -1,\n length = path.length,\n lastIndex = length - 1,\n nested = object;\n\n while (nested != null && ++index < length) {\n var key = toKey(path[index]),\n newValue = value;\n\n if (key === '__proto__' || key === 'constructor' || key === 'prototype') {\n return object;\n }\n\n if (index != lastIndex) {\n var objValue = nested[key];\n newValue = customizer ? customizer(objValue, key, nested) : undefined;\n if (newValue === undefined) {\n newValue = isObject(objValue)\n ? objValue\n : (isIndex(path[index + 1]) ? [] : {});\n }\n }\n assignValue(nested, key, newValue);\n nested = nested[key];\n }\n return object;\n }\n\n /**\n * The base implementation of `setData` without support for hot loop shorting.\n *\n * @private\n * @param {Function} func The function to associate metadata with.\n * @param {*} data The metadata.\n * @returns {Function} Returns `func`.\n */\n var baseSetData = !metaMap ? identity : function(func, data) {\n metaMap.set(func, data);\n return func;\n };\n\n /**\n * The base implementation of `setToString` without support for hot loop shorting.\n *\n * @private\n * @param {Function} func The function to modify.\n * @param {Function} string The `toString` result.\n * @returns {Function} Returns `func`.\n */\n var baseSetToString = !defineProperty ? identity : function(func, string) {\n return defineProperty(func, 'toString', {\n 'configurable': true,\n 'enumerable': false,\n 'value': constant(string),\n 'writable': true\n });\n };\n\n /**\n * The base implementation of `_.shuffle`.\n *\n * @private\n * @param {Array|Object} collection The collection to shuffle.\n * @returns {Array} Returns the new shuffled array.\n */\n function baseShuffle(collection) {\n return shuffleSelf(values(collection));\n }\n\n /**\n * The base implementation of `_.slice` without an iteratee call guard.\n *\n * @private\n * @param {Array} array The array to slice.\n * @param {number} [start=0] The start position.\n * @param {number} [end=array.length] The end position.\n * @returns {Array} Returns the slice of `array`.\n */\n function baseSlice(array, start, end) {\n var index = -1,\n length = array.length;\n\n if (start < 0) {\n start = -start > length ? 0 : (length + start);\n }\n end = end > length ? length : end;\n if (end < 0) {\n end += length;\n }\n length = start > end ? 0 : ((end - start) >>> 0);\n start >>>= 0;\n\n var result = Array(length);\n while (++index < length) {\n result[index] = array[index + start];\n }\n return result;\n }\n\n /**\n * The base implementation of `_.some` without support for iteratee shorthands.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {boolean} Returns `true` if any element passes the predicate check,\n * else `false`.\n */\n function baseSome(collection, predicate) {\n var result;\n\n baseEach(collection, function(value, index, collection) {\n result = predicate(value, index, collection);\n return !result;\n });\n return !!result;\n }\n\n /**\n * The base implementation of `_.sortedIndex` and `_.sortedLastIndex` which\n * performs a binary search of `array` to determine the index at which `value`\n * should be inserted into `array` in order to maintain its sort order.\n *\n * @private\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @param {boolean} [retHighest] Specify returning the highest qualified index.\n * @returns {number} Returns the index at which `value` should be inserted\n * into `array`.\n */\n function baseSortedIndex(array, value, retHighest) {\n var low = 0,\n high = array == null ? low : array.length;\n\n if (typeof value == 'number' && value === value && high <= HALF_MAX_ARRAY_LENGTH) {\n while (low < high) {\n var mid = (low + high) >>> 1,\n computed = array[mid];\n\n if (computed !== null && !isSymbol(computed) &&\n (retHighest ? (computed <= value) : (computed < value))) {\n low = mid + 1;\n } else {\n high = mid;\n }\n }\n return high;\n }\n return baseSortedIndexBy(array, value, identity, retHighest);\n }\n\n /**\n * The base implementation of `_.sortedIndexBy` and `_.sortedLastIndexBy`\n * which invokes `iteratee` for `value` and each element of `array` to compute\n * their sort ranking. The iteratee is invoked with one argument; (value).\n *\n * @private\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @param {Function} iteratee The iteratee invoked per element.\n * @param {boolean} [retHighest] Specify returning the highest qualified index.\n * @returns {number} Returns the index at which `value` should be inserted\n * into `array`.\n */\n function baseSortedIndexBy(array, value, iteratee, retHighest) {\n var low = 0,\n high = array == null ? 0 : array.length;\n if (high === 0) {\n return 0;\n }\n\n value = iteratee(value);\n var valIsNaN = value !== value,\n valIsNull = value === null,\n valIsSymbol = isSymbol(value),\n valIsUndefined = value === undefined;\n\n while (low < high) {\n var mid = nativeFloor((low + high) / 2),\n computed = iteratee(array[mid]),\n othIsDefined = computed !== undefined,\n othIsNull = computed === null,\n othIsReflexive = computed === computed,\n othIsSymbol = isSymbol(computed);\n\n if (valIsNaN) {\n var setLow = retHighest || othIsReflexive;\n } else if (valIsUndefined) {\n setLow = othIsReflexive && (retHighest || othIsDefined);\n } else if (valIsNull) {\n setLow = othIsReflexive && othIsDefined && (retHighest || !othIsNull);\n } else if (valIsSymbol) {\n setLow = othIsReflexive && othIsDefined && !othIsNull && (retHighest || !othIsSymbol);\n } else if (othIsNull || othIsSymbol) {\n setLow = false;\n } else {\n setLow = retHighest ? (computed <= value) : (computed < value);\n }\n if (setLow) {\n low = mid + 1;\n } else {\n high = mid;\n }\n }\n return nativeMin(high, MAX_ARRAY_INDEX);\n }\n\n /**\n * The base implementation of `_.sortedUniq` and `_.sortedUniqBy` without\n * support for iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n */\n function baseSortedUniq(array, iteratee) {\n var index = -1,\n length = array.length,\n resIndex = 0,\n result = [];\n\n while (++index < length) {\n var value = array[index],\n computed = iteratee ? iteratee(value) : value;\n\n if (!index || !eq(computed, seen)) {\n var seen = computed;\n result[resIndex++] = value === 0 ? 0 : value;\n }\n }\n return result;\n }\n\n /**\n * The base implementation of `_.toNumber` which doesn't ensure correct\n * conversions of binary, hexadecimal, or octal string values.\n *\n * @private\n * @param {*} value The value to process.\n * @returns {number} Returns the number.\n */\n function baseToNumber(value) {\n if (typeof value == 'number') {\n return value;\n }\n if (isSymbol(value)) {\n return NAN;\n }\n return +value;\n }\n\n /**\n * The base implementation of `_.toString` which doesn't convert nullish\n * values to empty strings.\n *\n * @private\n * @param {*} value The value to process.\n * @returns {string} Returns the string.\n */\n function baseToString(value) {\n // Exit early for strings to avoid a performance hit in some environments.\n if (typeof value == 'string') {\n return value;\n }\n if (isArray(value)) {\n // Recursively convert values (susceptible to call stack limits).\n return arrayMap(value, baseToString) + '';\n }\n if (isSymbol(value)) {\n return symbolToString ? symbolToString.call(value) : '';\n }\n var result = (value + '');\n return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;\n }\n\n /**\n * The base implementation of `_.uniqBy` without support for iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n */\n function baseUniq(array, iteratee, comparator) {\n var index = -1,\n includes = arrayIncludes,\n length = array.length,\n isCommon = true,\n result = [],\n seen = result;\n\n if (comparator) {\n isCommon = false;\n includes = arrayIncludesWith;\n }\n else if (length >= LARGE_ARRAY_SIZE) {\n var set = iteratee ? null : createSet(array);\n if (set) {\n return setToArray(set);\n }\n isCommon = false;\n includes = cacheHas;\n seen = new SetCache;\n }\n else {\n seen = iteratee ? [] : result;\n }\n outer:\n while (++index < length) {\n var value = array[index],\n computed = iteratee ? iteratee(value) : value;\n\n value = (comparator || value !== 0) ? value : 0;\n if (isCommon && computed === computed) {\n var seenIndex = seen.length;\n while (seenIndex--) {\n if (seen[seenIndex] === computed) {\n continue outer;\n }\n }\n if (iteratee) {\n seen.push(computed);\n }\n result.push(value);\n }\n else if (!includes(seen, computed, comparator)) {\n if (seen !== result) {\n seen.push(computed);\n }\n result.push(value);\n }\n }\n return result;\n }\n\n /**\n * The base implementation of `_.unset`.\n *\n * @private\n * @param {Object} object The object to modify.\n * @param {Array|string} path The property path to unset.\n * @returns {boolean} Returns `true` if the property is deleted, else `false`.\n */\n function baseUnset(object, path) {\n path = castPath(path, object);\n object = parent(object, path);\n return object == null || delete object[toKey(last(path))];\n }\n\n /**\n * The base implementation of `_.update`.\n *\n * @private\n * @param {Object} object The object to modify.\n * @param {Array|string} path The path of the property to update.\n * @param {Function} updater The function to produce the updated value.\n * @param {Function} [customizer] The function to customize path creation.\n * @returns {Object} Returns `object`.\n */\n function baseUpdate(object, path, updater, customizer) {\n return baseSet(object, path, updater(baseGet(object, path)), customizer);\n }\n\n /**\n * The base implementation of methods like `_.dropWhile` and `_.takeWhile`\n * without support for iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to query.\n * @param {Function} predicate The function invoked per iteration.\n * @param {boolean} [isDrop] Specify dropping elements instead of taking them.\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {Array} Returns the slice of `array`.\n */\n function baseWhile(array, predicate, isDrop, fromRight) {\n var length = array.length,\n index = fromRight ? length : -1;\n\n while ((fromRight ? index-- : ++index < length) &&\n predicate(array[index], index, array)) {}\n\n return isDrop\n ? baseSlice(array, (fromRight ? 0 : index), (fromRight ? index + 1 : length))\n : baseSlice(array, (fromRight ? index + 1 : 0), (fromRight ? length : index));\n }\n\n /**\n * The base implementation of `wrapperValue` which returns the result of\n * performing a sequence of actions on the unwrapped `value`, where each\n * successive action is supplied the return value of the previous.\n *\n * @private\n * @param {*} value The unwrapped value.\n * @param {Array} actions Actions to perform to resolve the unwrapped value.\n * @returns {*} Returns the resolved value.\n */\n function baseWrapperValue(value, actions) {\n var result = value;\n if (result instanceof LazyWrapper) {\n result = result.value();\n }\n return arrayReduce(actions, function(result, action) {\n return action.func.apply(action.thisArg, arrayPush([result], action.args));\n }, result);\n }\n\n /**\n * The base implementation of methods like `_.xor`, without support for\n * iteratee shorthands, that accepts an array of arrays to inspect.\n *\n * @private\n * @param {Array} arrays The arrays to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of values.\n */\n function baseXor(arrays, iteratee, comparator) {\n var length = arrays.length;\n if (length < 2) {\n return length ? baseUniq(arrays[0]) : [];\n }\n var index = -1,\n result = Array(length);\n\n while (++index < length) {\n var array = arrays[index],\n othIndex = -1;\n\n while (++othIndex < length) {\n if (othIndex != index) {\n result[index] = baseDifference(result[index] || array, arrays[othIndex], iteratee, comparator);\n }\n }\n }\n return baseUniq(baseFlatten(result, 1), iteratee, comparator);\n }\n\n /**\n * This base implementation of `_.zipObject` which assigns values using `assignFunc`.\n *\n * @private\n * @param {Array} props The property identifiers.\n * @param {Array} values The property values.\n * @param {Function} assignFunc The function to assign values.\n * @returns {Object} Returns the new object.\n */\n function baseZipObject(props, values, assignFunc) {\n var index = -1,\n length = props.length,\n valsLength = values.length,\n result = {};\n\n while (++index < length) {\n var value = index < valsLength ? values[index] : undefined;\n assignFunc(result, props[index], value);\n }\n return result;\n }\n\n /**\n * Casts `value` to an empty array if it's not an array like object.\n *\n * @private\n * @param {*} value The value to inspect.\n * @returns {Array|Object} Returns the cast array-like object.\n */\n function castArrayLikeObject(value) {\n return isArrayLikeObject(value) ? value : [];\n }\n\n /**\n * Casts `value` to `identity` if it's not a function.\n *\n * @private\n * @param {*} value The value to inspect.\n * @returns {Function} Returns cast function.\n */\n function castFunction(value) {\n return typeof value == 'function' ? value : identity;\n }\n\n /**\n * Casts `value` to a path array if it's not one.\n *\n * @private\n * @param {*} value The value to inspect.\n * @param {Object} [object] The object to query keys on.\n * @returns {Array} Returns the cast property path array.\n */\n function castPath(value, object) {\n if (isArray(value)) {\n return value;\n }\n return isKey(value, object) ? [value] : stringToPath(toString(value));\n }\n\n /**\n * A `baseRest` alias which can be replaced with `identity` by module\n * replacement plugins.\n *\n * @private\n * @type {Function}\n * @param {Function} func The function to apply a rest parameter to.\n * @returns {Function} Returns the new function.\n */\n var castRest = baseRest;\n\n /**\n * Casts `array` to a slice if it's needed.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {number} start The start position.\n * @param {number} [end=array.length] The end position.\n * @returns {Array} Returns the cast slice.\n */\n function castSlice(array, start, end) {\n var length = array.length;\n end = end === undefined ? length : end;\n return (!start && end >= length) ? array : baseSlice(array, start, end);\n }\n\n /**\n * A simple wrapper around the global [`clearTimeout`](https://mdn.io/clearTimeout).\n *\n * @private\n * @param {number|Object} id The timer id or timeout object of the timer to clear.\n */\n var clearTimeout = ctxClearTimeout || function(id) {\n return root.clearTimeout(id);\n };\n\n /**\n * Creates a clone of `buffer`.\n *\n * @private\n * @param {Buffer} buffer The buffer to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Buffer} Returns the cloned buffer.\n */\n function cloneBuffer(buffer, isDeep) {\n if (isDeep) {\n return buffer.slice();\n }\n var length = buffer.length,\n result = allocUnsafe ? allocUnsafe(length) : new buffer.constructor(length);\n\n buffer.copy(result);\n return result;\n }\n\n /**\n * Creates a clone of `arrayBuffer`.\n *\n * @private\n * @param {ArrayBuffer} arrayBuffer The array buffer to clone.\n * @returns {ArrayBuffer} Returns the cloned array buffer.\n */\n function cloneArrayBuffer(arrayBuffer) {\n var result = new arrayBuffer.constructor(arrayBuffer.byteLength);\n new Uint8Array(result).set(new Uint8Array(arrayBuffer));\n return result;\n }\n\n /**\n * Creates a clone of `dataView`.\n *\n * @private\n * @param {Object} dataView The data view to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Object} Returns the cloned data view.\n */\n function cloneDataView(dataView, isDeep) {\n var buffer = isDeep ? cloneArrayBuffer(dataView.buffer) : dataView.buffer;\n return new dataView.constructor(buffer, dataView.byteOffset, dataView.byteLength);\n }\n\n /**\n * Creates a clone of `regexp`.\n *\n * @private\n * @param {Object} regexp The regexp to clone.\n * @returns {Object} Returns the cloned regexp.\n */\n function cloneRegExp(regexp) {\n var result = new regexp.constructor(regexp.source, reFlags.exec(regexp));\n result.lastIndex = regexp.lastIndex;\n return result;\n }\n\n /**\n * Creates a clone of the `symbol` object.\n *\n * @private\n * @param {Object} symbol The symbol object to clone.\n * @returns {Object} Returns the cloned symbol object.\n */\n function cloneSymbol(symbol) {\n return symbolValueOf ? Object(symbolValueOf.call(symbol)) : {};\n }\n\n /**\n * Creates a clone of `typedArray`.\n *\n * @private\n * @param {Object} typedArray The typed array to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Object} Returns the cloned typed array.\n */\n function cloneTypedArray(typedArray, isDeep) {\n var buffer = isDeep ? cloneArrayBuffer(typedArray.buffer) : typedArray.buffer;\n return new typedArray.constructor(buffer, typedArray.byteOffset, typedArray.length);\n }\n\n /**\n * Compares values to sort them in ascending order.\n *\n * @private\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {number} Returns the sort order indicator for `value`.\n */\n function compareAscending(value, other) {\n if (value !== other) {\n var valIsDefined = value !== undefined,\n valIsNull = value === null,\n valIsReflexive = value === value,\n valIsSymbol = isSymbol(value);\n\n var othIsDefined = other !== undefined,\n othIsNull = other === null,\n othIsReflexive = other === other,\n othIsSymbol = isSymbol(other);\n\n if ((!othIsNull && !othIsSymbol && !valIsSymbol && value > other) ||\n (valIsSymbol && othIsDefined && othIsReflexive && !othIsNull && !othIsSymbol) ||\n (valIsNull && othIsDefined && othIsReflexive) ||\n (!valIsDefined && othIsReflexive) ||\n !valIsReflexive) {\n return 1;\n }\n if ((!valIsNull && !valIsSymbol && !othIsSymbol && value < other) ||\n (othIsSymbol && valIsDefined && valIsReflexive && !valIsNull && !valIsSymbol) ||\n (othIsNull && valIsDefined && valIsReflexive) ||\n (!othIsDefined && valIsReflexive) ||\n !othIsReflexive) {\n return -1;\n }\n }\n return 0;\n }\n\n /**\n * Used by `_.orderBy` to compare multiple properties of a value to another\n * and stable sort them.\n *\n * If `orders` is unspecified, all values are sorted in ascending order. Otherwise,\n * specify an order of \"desc\" for descending or \"asc\" for ascending sort order\n * of corresponding values.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {boolean[]|string[]} orders The order to sort by for each property.\n * @returns {number} Returns the sort order indicator for `object`.\n */\n function compareMultiple(object, other, orders) {\n var index = -1,\n objCriteria = object.criteria,\n othCriteria = other.criteria,\n length = objCriteria.length,\n ordersLength = orders.length;\n\n while (++index < length) {\n var result = compareAscending(objCriteria[index], othCriteria[index]);\n if (result) {\n if (index >= ordersLength) {\n return result;\n }\n var order = orders[index];\n return result * (order == 'desc' ? -1 : 1);\n }\n }\n // Fixes an `Array#sort` bug in the JS engine embedded in Adobe applications\n // that causes it, under certain circumstances, to provide the same value for\n // `object` and `other`. See https://github.com/jashkenas/underscore/pull/1247\n // for more details.\n //\n // This also ensures a stable sort in V8 and other engines.\n // See https://bugs.chromium.org/p/v8/issues/detail?id=90 for more details.\n return object.index - other.index;\n }\n\n /**\n * Creates an array that is the composition of partially applied arguments,\n * placeholders, and provided arguments into a single array of arguments.\n *\n * @private\n * @param {Array} args The provided arguments.\n * @param {Array} partials The arguments to prepend to those provided.\n * @param {Array} holders The `partials` placeholder indexes.\n * @params {boolean} [isCurried] Specify composing for a curried function.\n * @returns {Array} Returns the new array of composed arguments.\n */\n function composeArgs(args, partials, holders, isCurried) {\n var argsIndex = -1,\n argsLength = args.length,\n holdersLength = holders.length,\n leftIndex = -1,\n leftLength = partials.length,\n rangeLength = nativeMax(argsLength - holdersLength, 0),\n result = Array(leftLength + rangeLength),\n isUncurried = !isCurried;\n\n while (++leftIndex < leftLength) {\n result[leftIndex] = partials[leftIndex];\n }\n while (++argsIndex < holdersLength) {\n if (isUncurried || argsIndex < argsLength) {\n result[holders[argsIndex]] = args[argsIndex];\n }\n }\n while (rangeLength--) {\n result[leftIndex++] = args[argsIndex++];\n }\n return result;\n }\n\n /**\n * This function is like `composeArgs` except that the arguments composition\n * is tailored for `_.partialRight`.\n *\n * @private\n * @param {Array} args The provided arguments.\n * @param {Array} partials The arguments to append to those provided.\n * @param {Array} holders The `partials` placeholder indexes.\n * @params {boolean} [isCurried] Specify composing for a curried function.\n * @returns {Array} Returns the new array of composed arguments.\n */\n function composeArgsRight(args, partials, holders, isCurried) {\n var argsIndex = -1,\n argsLength = args.length,\n holdersIndex = -1,\n holdersLength = holders.length,\n rightIndex = -1,\n rightLength = partials.length,\n rangeLength = nativeMax(argsLength - holdersLength, 0),\n result = Array(rangeLength + rightLength),\n isUncurried = !isCurried;\n\n while (++argsIndex < rangeLength) {\n result[argsIndex] = args[argsIndex];\n }\n var offset = argsIndex;\n while (++rightIndex < rightLength) {\n result[offset + rightIndex] = partials[rightIndex];\n }\n while (++holdersIndex < holdersLength) {\n if (isUncurried || argsIndex < argsLength) {\n result[offset + holders[holdersIndex]] = args[argsIndex++];\n }\n }\n return result;\n }\n\n /**\n * Copies the values of `source` to `array`.\n *\n * @private\n * @param {Array} source The array to copy values from.\n * @param {Array} [array=[]] The array to copy values to.\n * @returns {Array} Returns `array`.\n */\n function copyArray(source, array) {\n var index = -1,\n length = source.length;\n\n array || (array = Array(length));\n while (++index < length) {\n array[index] = source[index];\n }\n return array;\n }\n\n /**\n * Copies properties of `source` to `object`.\n *\n * @private\n * @param {Object} source The object to copy properties from.\n * @param {Array} props The property identifiers to copy.\n * @param {Object} [object={}] The object to copy properties to.\n * @param {Function} [customizer] The function to customize copied values.\n * @returns {Object} Returns `object`.\n */\n function copyObject(source, props, object, customizer) {\n var isNew = !object;\n object || (object = {});\n\n var index = -1,\n length = props.length;\n\n while (++index < length) {\n var key = props[index];\n\n var newValue = customizer\n ? customizer(object[key], source[key], key, object, source)\n : undefined;\n\n if (newValue === undefined) {\n newValue = source[key];\n }\n if (isNew) {\n baseAssignValue(object, key, newValue);\n } else {\n assignValue(object, key, newValue);\n }\n }\n return object;\n }\n\n /**\n * Copies own symbols of `source` to `object`.\n *\n * @private\n * @param {Object} source The object to copy symbols from.\n * @param {Object} [object={}] The object to copy symbols to.\n * @returns {Object} Returns `object`.\n */\n function copySymbols(source, object) {\n return copyObject(source, getSymbols(source), object);\n }\n\n /**\n * Copies own and inherited symbols of `source` to `object`.\n *\n * @private\n * @param {Object} source The object to copy symbols from.\n * @param {Object} [object={}] The object to copy symbols to.\n * @returns {Object} Returns `object`.\n */\n function copySymbolsIn(source, object) {\n return copyObject(source, getSymbolsIn(source), object);\n }\n\n /**\n * Creates a function like `_.groupBy`.\n *\n * @private\n * @param {Function} setter The function to set accumulator values.\n * @param {Function} [initializer] The accumulator object initializer.\n * @returns {Function} Returns the new aggregator function.\n */\n function createAggregator(setter, initializer) {\n return function(collection, iteratee) {\n var func = isArray(collection) ? arrayAggregator : baseAggregator,\n accumulator = initializer ? initializer() : {};\n\n return func(collection, setter, getIteratee(iteratee, 2), accumulator);\n };\n }\n\n /**\n * Creates a function like `_.assign`.\n *\n * @private\n * @param {Function} assigner The function to assign values.\n * @returns {Function} Returns the new assigner function.\n */\n function createAssigner(assigner) {\n return baseRest(function(object, sources) {\n var index = -1,\n length = sources.length,\n customizer = length > 1 ? sources[length - 1] : undefined,\n guard = length > 2 ? sources[2] : undefined;\n\n customizer = (assigner.length > 3 && typeof customizer == 'function')\n ? (length--, customizer)\n : undefined;\n\n if (guard && isIterateeCall(sources[0], sources[1], guard)) {\n customizer = length < 3 ? undefined : customizer;\n length = 1;\n }\n object = Object(object);\n while (++index < length) {\n var source = sources[index];\n if (source) {\n assigner(object, source, index, customizer);\n }\n }\n return object;\n });\n }\n\n /**\n * Creates a `baseEach` or `baseEachRight` function.\n *\n * @private\n * @param {Function} eachFunc The function to iterate over a collection.\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {Function} Returns the new base function.\n */\n function createBaseEach(eachFunc, fromRight) {\n return function(collection, iteratee) {\n if (collection == null) {\n return collection;\n }\n if (!isArrayLike(collection)) {\n return eachFunc(collection, iteratee);\n }\n var length = collection.length,\n index = fromRight ? length : -1,\n iterable = Object(collection);\n\n while ((fromRight ? index-- : ++index < length)) {\n if (iteratee(iterable[index], index, iterable) === false) {\n break;\n }\n }\n return collection;\n };\n }\n\n /**\n * Creates a base function for methods like `_.forIn` and `_.forOwn`.\n *\n * @private\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {Function} Returns the new base function.\n */\n function createBaseFor(fromRight) {\n return function(object, iteratee, keysFunc) {\n var index = -1,\n iterable = Object(object),\n props = keysFunc(object),\n length = props.length;\n\n while (length--) {\n var key = props[fromRight ? length : ++index];\n if (iteratee(iterable[key], key, iterable) === false) {\n break;\n }\n }\n return object;\n };\n }\n\n /**\n * Creates a function that wraps `func` to invoke it with the optional `this`\n * binding of `thisArg`.\n *\n * @private\n * @param {Function} func The function to wrap.\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n * @param {*} [thisArg] The `this` binding of `func`.\n * @returns {Function} Returns the new wrapped function.\n */\n function createBind(func, bitmask, thisArg) {\n var isBind = bitmask & WRAP_BIND_FLAG,\n Ctor = createCtor(func);\n\n function wrapper() {\n var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;\n return fn.apply(isBind ? thisArg : this, arguments);\n }\n return wrapper;\n }\n\n /**\n * Creates a function like `_.lowerFirst`.\n *\n * @private\n * @param {string} methodName The name of the `String` case method to use.\n * @returns {Function} Returns the new case function.\n */\n function createCaseFirst(methodName) {\n return function(string) {\n string = toString(string);\n\n var strSymbols = hasUnicode(string)\n ? stringToArray(string)\n : undefined;\n\n var chr = strSymbols\n ? strSymbols[0]\n : string.charAt(0);\n\n var trailing = strSymbols\n ? castSlice(strSymbols, 1).join('')\n : string.slice(1);\n\n return chr[methodName]() + trailing;\n };\n }\n\n /**\n * Creates a function like `_.camelCase`.\n *\n * @private\n * @param {Function} callback The function to combine each word.\n * @returns {Function} Returns the new compounder function.\n */\n function createCompounder(callback) {\n return function(string) {\n return arrayReduce(words(deburr(string).replace(reApos, '')), callback, '');\n };\n }\n\n /**\n * Creates a function that produces an instance of `Ctor` regardless of\n * whether it was invoked as part of a `new` expression or by `call` or `apply`.\n *\n * @private\n * @param {Function} Ctor The constructor to wrap.\n * @returns {Function} Returns the new wrapped function.\n */\n function createCtor(Ctor) {\n return function() {\n // Use a `switch` statement to work with class constructors. See\n // http://ecma-international.org/ecma-262/7.0/#sec-ecmascript-function-objects-call-thisargument-argumentslist\n // for more details.\n var args = arguments;\n switch (args.length) {\n case 0: return new Ctor;\n case 1: return new Ctor(args[0]);\n case 2: return new Ctor(args[0], args[1]);\n case 3: return new Ctor(args[0], args[1], args[2]);\n case 4: return new Ctor(args[0], args[1], args[2], args[3]);\n case 5: return new Ctor(args[0], args[1], args[2], args[3], args[4]);\n case 6: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5]);\n case 7: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5], args[6]);\n }\n var thisBinding = baseCreate(Ctor.prototype),\n result = Ctor.apply(thisBinding, args);\n\n // Mimic the constructor's `return` behavior.\n // See https://es5.github.io/#x13.2.2 for more details.\n return isObject(result) ? result : thisBinding;\n };\n }\n\n /**\n * Creates a function that wraps `func` to enable currying.\n *\n * @private\n * @param {Function} func The function to wrap.\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n * @param {number} arity The arity of `func`.\n * @returns {Function} Returns the new wrapped function.\n */\n function createCurry(func, bitmask, arity) {\n var Ctor = createCtor(func);\n\n function wrapper() {\n var length = arguments.length,\n args = Array(length),\n index = length,\n placeholder = getHolder(wrapper);\n\n while (index--) {\n args[index] = arguments[index];\n }\n var holders = (length < 3 && args[0] !== placeholder && args[length - 1] !== placeholder)\n ? []\n : replaceHolders(args, placeholder);\n\n length -= holders.length;\n if (length < arity) {\n return createRecurry(\n func, bitmask, createHybrid, wrapper.placeholder, undefined,\n args, holders, undefined, undefined, arity - length);\n }\n var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;\n return apply(fn, this, args);\n }\n return wrapper;\n }\n\n /**\n * Creates a `_.find` or `_.findLast` function.\n *\n * @private\n * @param {Function} findIndexFunc The function to find the collection index.\n * @returns {Function} Returns the new find function.\n */\n function createFind(findIndexFunc) {\n return function(collection, predicate, fromIndex) {\n var iterable = Object(collection);\n if (!isArrayLike(collection)) {\n var iteratee = getIteratee(predicate, 3);\n collection = keys(collection);\n predicate = function(key) { return iteratee(iterable[key], key, iterable); };\n }\n var index = findIndexFunc(collection, predicate, fromIndex);\n return index > -1 ? iterable[iteratee ? collection[index] : index] : undefined;\n };\n }\n\n /**\n * Creates a `_.flow` or `_.flowRight` function.\n *\n * @private\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {Function} Returns the new flow function.\n */\n function createFlow(fromRight) {\n return flatRest(function(funcs) {\n var length = funcs.length,\n index = length,\n prereq = LodashWrapper.prototype.thru;\n\n if (fromRight) {\n funcs.reverse();\n }\n while (index--) {\n var func = funcs[index];\n if (typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n if (prereq && !wrapper && getFuncName(func) == 'wrapper') {\n var wrapper = new LodashWrapper([], true);\n }\n }\n index = wrapper ? index : length;\n while (++index < length) {\n func = funcs[index];\n\n var funcName = getFuncName(func),\n data = funcName == 'wrapper' ? getData(func) : undefined;\n\n if (data && isLaziable(data[0]) &&\n data[1] == (WRAP_ARY_FLAG | WRAP_CURRY_FLAG | WRAP_PARTIAL_FLAG | WRAP_REARG_FLAG) &&\n !data[4].length && data[9] == 1\n ) {\n wrapper = wrapper[getFuncName(data[0])].apply(wrapper, data[3]);\n } else {\n wrapper = (func.length == 1 && isLaziable(func))\n ? wrapper[funcName]()\n : wrapper.thru(func);\n }\n }\n return function() {\n var args = arguments,\n value = args[0];\n\n if (wrapper && args.length == 1 && isArray(value)) {\n return wrapper.plant(value).value();\n }\n var index = 0,\n result = length ? funcs[index].apply(this, args) : value;\n\n while (++index < length) {\n result = funcs[index].call(this, result);\n }\n return result;\n };\n });\n }\n\n /**\n * Creates a function that wraps `func` to invoke it with optional `this`\n * binding of `thisArg`, partial application, and currying.\n *\n * @private\n * @param {Function|string} func The function or method name to wrap.\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n * @param {*} [thisArg] The `this` binding of `func`.\n * @param {Array} [partials] The arguments to prepend to those provided to\n * the new function.\n * @param {Array} [holders] The `partials` placeholder indexes.\n * @param {Array} [partialsRight] The arguments to append to those provided\n * to the new function.\n * @param {Array} [holdersRight] The `partialsRight` placeholder indexes.\n * @param {Array} [argPos] The argument positions of the new function.\n * @param {number} [ary] The arity cap of `func`.\n * @param {number} [arity] The arity of `func`.\n * @returns {Function} Returns the new wrapped function.\n */\n function createHybrid(func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity) {\n var isAry = bitmask & WRAP_ARY_FLAG,\n isBind = bitmask & WRAP_BIND_FLAG,\n isBindKey = bitmask & WRAP_BIND_KEY_FLAG,\n isCurried = bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG),\n isFlip = bitmask & WRAP_FLIP_FLAG,\n Ctor = isBindKey ? undefined : createCtor(func);\n\n function wrapper() {\n var length = arguments.length,\n args = Array(length),\n index = length;\n\n while (index--) {\n args[index] = arguments[index];\n }\n if (isCurried) {\n var placeholder = getHolder(wrapper),\n holdersCount = countHolders(args, placeholder);\n }\n if (partials) {\n args = composeArgs(args, partials, holders, isCurried);\n }\n if (partialsRight) {\n args = composeArgsRight(args, partialsRight, holdersRight, isCurried);\n }\n length -= holdersCount;\n if (isCurried && length < arity) {\n var newHolders = replaceHolders(args, placeholder);\n return createRecurry(\n func, bitmask, createHybrid, wrapper.placeholder, thisArg,\n args, newHolders, argPos, ary, arity - length\n );\n }\n var thisBinding = isBind ? thisArg : this,\n fn = isBindKey ? thisBinding[func] : func;\n\n length = args.length;\n if (argPos) {\n args = reorder(args, argPos);\n } else if (isFlip && length > 1) {\n args.reverse();\n }\n if (isAry && ary < length) {\n args.length = ary;\n }\n if (this && this !== root && this instanceof wrapper) {\n fn = Ctor || createCtor(fn);\n }\n return fn.apply(thisBinding, args);\n }\n return wrapper;\n }\n\n /**\n * Creates a function like `_.invertBy`.\n *\n * @private\n * @param {Function} setter The function to set accumulator values.\n * @param {Function} toIteratee The function to resolve iteratees.\n * @returns {Function} Returns the new inverter function.\n */\n function createInverter(setter, toIteratee) {\n return function(object, iteratee) {\n return baseInverter(object, setter, toIteratee(iteratee), {});\n };\n }\n\n /**\n * Creates a function that performs a mathematical operation on two values.\n *\n * @private\n * @param {Function} operator The function to perform the operation.\n * @param {number} [defaultValue] The value used for `undefined` arguments.\n * @returns {Function} Returns the new mathematical operation function.\n */\n function createMathOperation(operator, defaultValue) {\n return function(value, other) {\n var result;\n if (value === undefined && other === undefined) {\n return defaultValue;\n }\n if (value !== undefined) {\n result = value;\n }\n if (other !== undefined) {\n if (result === undefined) {\n return other;\n }\n if (typeof value == 'string' || typeof other == 'string') {\n value = baseToString(value);\n other = baseToString(other);\n } else {\n value = baseToNumber(value);\n other = baseToNumber(other);\n }\n result = operator(value, other);\n }\n return result;\n };\n }\n\n /**\n * Creates a function like `_.over`.\n *\n * @private\n * @param {Function} arrayFunc The function to iterate over iteratees.\n * @returns {Function} Returns the new over function.\n */\n function createOver(arrayFunc) {\n return flatRest(function(iteratees) {\n iteratees = arrayMap(iteratees, baseUnary(getIteratee()));\n return baseRest(function(args) {\n var thisArg = this;\n return arrayFunc(iteratees, function(iteratee) {\n return apply(iteratee, thisArg, args);\n });\n });\n });\n }\n\n /**\n * Creates the padding for `string` based on `length`. The `chars` string\n * is truncated if the number of characters exceeds `length`.\n *\n * @private\n * @param {number} length The padding length.\n * @param {string} [chars=' '] The string used as padding.\n * @returns {string} Returns the padding for `string`.\n */\n function createPadding(length, chars) {\n chars = chars === undefined ? ' ' : baseToString(chars);\n\n var charsLength = chars.length;\n if (charsLength < 2) {\n return charsLength ? baseRepeat(chars, length) : chars;\n }\n var result = baseRepeat(chars, nativeCeil(length / stringSize(chars)));\n return hasUnicode(chars)\n ? castSlice(stringToArray(result), 0, length).join('')\n : result.slice(0, length);\n }\n\n /**\n * Creates a function that wraps `func` to invoke it with the `this` binding\n * of `thisArg` and `partials` prepended to the arguments it receives.\n *\n * @private\n * @param {Function} func The function to wrap.\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n * @param {*} thisArg The `this` binding of `func`.\n * @param {Array} partials The arguments to prepend to those provided to\n * the new function.\n * @returns {Function} Returns the new wrapped function.\n */\n function createPartial(func, bitmask, thisArg, partials) {\n var isBind = bitmask & WRAP_BIND_FLAG,\n Ctor = createCtor(func);\n\n function wrapper() {\n var argsIndex = -1,\n argsLength = arguments.length,\n leftIndex = -1,\n leftLength = partials.length,\n args = Array(leftLength + argsLength),\n fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;\n\n while (++leftIndex < leftLength) {\n args[leftIndex] = partials[leftIndex];\n }\n while (argsLength--) {\n args[leftIndex++] = arguments[++argsIndex];\n }\n return apply(fn, isBind ? thisArg : this, args);\n }\n return wrapper;\n }\n\n /**\n * Creates a `_.range` or `_.rangeRight` function.\n *\n * @private\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {Function} Returns the new range function.\n */\n function createRange(fromRight) {\n return function(start, end, step) {\n if (step && typeof step != 'number' && isIterateeCall(start, end, step)) {\n end = step = undefined;\n }\n // Ensure the sign of `-0` is preserved.\n start = toFinite(start);\n if (end === undefined) {\n end = start;\n start = 0;\n } else {\n end = toFinite(end);\n }\n step = step === undefined ? (start < end ? 1 : -1) : toFinite(step);\n return baseRange(start, end, step, fromRight);\n };\n }\n\n /**\n * Creates a function that performs a relational operation on two values.\n *\n * @private\n * @param {Function} operator The function to perform the operation.\n * @returns {Function} Returns the new relational operation function.\n */\n function createRelationalOperation(operator) {\n return function(value, other) {\n if (!(typeof value == 'string' && typeof other == 'string')) {\n value = toNumber(value);\n other = toNumber(other);\n }\n return operator(value, other);\n };\n }\n\n /**\n * Creates a function that wraps `func` to continue currying.\n *\n * @private\n * @param {Function} func The function to wrap.\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n * @param {Function} wrapFunc The function to create the `func` wrapper.\n * @param {*} placeholder The placeholder value.\n * @param {*} [thisArg] The `this` binding of `func`.\n * @param {Array} [partials] The arguments to prepend to those provided to\n * the new function.\n * @param {Array} [holders] The `partials` placeholder indexes.\n * @param {Array} [argPos] The argument positions of the new function.\n * @param {number} [ary] The arity cap of `func`.\n * @param {number} [arity] The arity of `func`.\n * @returns {Function} Returns the new wrapped function.\n */\n function createRecurry(func, bitmask, wrapFunc, placeholder, thisArg, partials, holders, argPos, ary, arity) {\n var isCurry = bitmask & WRAP_CURRY_FLAG,\n newHolders = isCurry ? holders : undefined,\n newHoldersRight = isCurry ? undefined : holders,\n newPartials = isCurry ? partials : undefined,\n newPartialsRight = isCurry ? undefined : partials;\n\n bitmask |= (isCurry ? WRAP_PARTIAL_FLAG : WRAP_PARTIAL_RIGHT_FLAG);\n bitmask &= ~(isCurry ? WRAP_PARTIAL_RIGHT_FLAG : WRAP_PARTIAL_FLAG);\n\n if (!(bitmask & WRAP_CURRY_BOUND_FLAG)) {\n bitmask &= ~(WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG);\n }\n var newData = [\n func, bitmask, thisArg, newPartials, newHolders, newPartialsRight,\n newHoldersRight, argPos, ary, arity\n ];\n\n var result = wrapFunc.apply(undefined, newData);\n if (isLaziable(func)) {\n setData(result, newData);\n }\n result.placeholder = placeholder;\n return setWrapToString(result, func, bitmask);\n }\n\n /**\n * Creates a function like `_.round`.\n *\n * @private\n * @param {string} methodName The name of the `Math` method to use when rounding.\n * @returns {Function} Returns the new round function.\n */\n function createRound(methodName) {\n var func = Math[methodName];\n return function(number, precision) {\n number = toNumber(number);\n precision = precision == null ? 0 : nativeMin(toInteger(precision), 292);\n if (precision && nativeIsFinite(number)) {\n // Shift with exponential notation to avoid floating-point issues.\n // See [MDN](https://mdn.io/round#Examples) for more details.\n var pair = (toString(number) + 'e').split('e'),\n value = func(pair[0] + 'e' + (+pair[1] + precision));\n\n pair = (toString(value) + 'e').split('e');\n return +(pair[0] + 'e' + (+pair[1] - precision));\n }\n return func(number);\n };\n }\n\n /**\n * Creates a set object of `values`.\n *\n * @private\n * @param {Array} values The values to add to the set.\n * @returns {Object} Returns the new set.\n */\n var createSet = !(Set && (1 / setToArray(new Set([,-0]))[1]) == INFINITY) ? noop : function(values) {\n return new Set(values);\n };\n\n /**\n * Creates a `_.toPairs` or `_.toPairsIn` function.\n *\n * @private\n * @param {Function} keysFunc The function to get the keys of a given object.\n * @returns {Function} Returns the new pairs function.\n */\n function createToPairs(keysFunc) {\n return function(object) {\n var tag = getTag(object);\n if (tag == mapTag) {\n return mapToArray(object);\n }\n if (tag == setTag) {\n return setToPairs(object);\n }\n return baseToPairs(object, keysFunc(object));\n };\n }\n\n /**\n * Creates a function that either curries or invokes `func` with optional\n * `this` binding and partially applied arguments.\n *\n * @private\n * @param {Function|string} func The function or method name to wrap.\n * @param {number} bitmask The bitmask flags.\n * 1 - `_.bind`\n * 2 - `_.bindKey`\n * 4 - `_.curry` or `_.curryRight` of a bound function\n * 8 - `_.curry`\n * 16 - `_.curryRight`\n * 32 - `_.partial`\n * 64 - `_.partialRight`\n * 128 - `_.rearg`\n * 256 - `_.ary`\n * 512 - `_.flip`\n * @param {*} [thisArg] The `this` binding of `func`.\n * @param {Array} [partials] The arguments to be partially applied.\n * @param {Array} [holders] The `partials` placeholder indexes.\n * @param {Array} [argPos] The argument positions of the new function.\n * @param {number} [ary] The arity cap of `func`.\n * @param {number} [arity] The arity of `func`.\n * @returns {Function} Returns the new wrapped function.\n */\n function createWrap(func, bitmask, thisArg, partials, holders, argPos, ary, arity) {\n var isBindKey = bitmask & WRAP_BIND_KEY_FLAG;\n if (!isBindKey && typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n var length = partials ? partials.length : 0;\n if (!length) {\n bitmask &= ~(WRAP_PARTIAL_FLAG | WRAP_PARTIAL_RIGHT_FLAG);\n partials = holders = undefined;\n }\n ary = ary === undefined ? ary : nativeMax(toInteger(ary), 0);\n arity = arity === undefined ? arity : toInteger(arity);\n length -= holders ? holders.length : 0;\n\n if (bitmask & WRAP_PARTIAL_RIGHT_FLAG) {\n var partialsRight = partials,\n holdersRight = holders;\n\n partials = holders = undefined;\n }\n var data = isBindKey ? undefined : getData(func);\n\n var newData = [\n func, bitmask, thisArg, partials, holders, partialsRight, holdersRight,\n argPos, ary, arity\n ];\n\n if (data) {\n mergeData(newData, data);\n }\n func = newData[0];\n bitmask = newData[1];\n thisArg = newData[2];\n partials = newData[3];\n holders = newData[4];\n arity = newData[9] = newData[9] === undefined\n ? (isBindKey ? 0 : func.length)\n : nativeMax(newData[9] - length, 0);\n\n if (!arity && bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG)) {\n bitmask &= ~(WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG);\n }\n if (!bitmask || bitmask == WRAP_BIND_FLAG) {\n var result = createBind(func, bitmask, thisArg);\n } else if (bitmask == WRAP_CURRY_FLAG || bitmask == WRAP_CURRY_RIGHT_FLAG) {\n result = createCurry(func, bitmask, arity);\n } else if ((bitmask == WRAP_PARTIAL_FLAG || bitmask == (WRAP_BIND_FLAG | WRAP_PARTIAL_FLAG)) && !holders.length) {\n result = createPartial(func, bitmask, thisArg, partials);\n } else {\n result = createHybrid.apply(undefined, newData);\n }\n var setter = data ? baseSetData : setData;\n return setWrapToString(setter(result, newData), func, bitmask);\n }\n\n /**\n * Used by `_.defaults` to customize its `_.assignIn` use to assign properties\n * of source objects to the destination object for all destination properties\n * that resolve to `undefined`.\n *\n * @private\n * @param {*} objValue The destination value.\n * @param {*} srcValue The source value.\n * @param {string} key The key of the property to assign.\n * @param {Object} object The parent object of `objValue`.\n * @returns {*} Returns the value to assign.\n */\n function customDefaultsAssignIn(objValue, srcValue, key, object) {\n if (objValue === undefined ||\n (eq(objValue, objectProto[key]) && !hasOwnProperty.call(object, key))) {\n return srcValue;\n }\n return objValue;\n }\n\n /**\n * Used by `_.defaultsDeep` to customize its `_.merge` use to merge source\n * objects into destination objects that are passed thru.\n *\n * @private\n * @param {*} objValue The destination value.\n * @param {*} srcValue The source value.\n * @param {string} key The key of the property to merge.\n * @param {Object} object The parent object of `objValue`.\n * @param {Object} source The parent object of `srcValue`.\n * @param {Object} [stack] Tracks traversed source values and their merged\n * counterparts.\n * @returns {*} Returns the value to assign.\n */\n function customDefaultsMerge(objValue, srcValue, key, object, source, stack) {\n if (isObject(objValue) && isObject(srcValue)) {\n // Recursively merge objects and arrays (susceptible to call stack limits).\n stack.set(srcValue, objValue);\n baseMerge(objValue, srcValue, undefined, customDefaultsMerge, stack);\n stack['delete'](srcValue);\n }\n return objValue;\n }\n\n /**\n * Used by `_.omit` to customize its `_.cloneDeep` use to only clone plain\n * objects.\n *\n * @private\n * @param {*} value The value to inspect.\n * @param {string} key The key of the property to inspect.\n * @returns {*} Returns the uncloned value or `undefined` to defer cloning to `_.cloneDeep`.\n */\n function customOmitClone(value) {\n return isPlainObject(value) ? undefined : value;\n }\n\n /**\n * A specialized version of `baseIsEqualDeep` for arrays with support for\n * partial deep comparisons.\n *\n * @private\n * @param {Array} array The array to compare.\n * @param {Array} other The other array to compare.\n * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n * @param {Function} customizer The function to customize comparisons.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Object} stack Tracks traversed `array` and `other` objects.\n * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`.\n */\n function equalArrays(array, other, bitmask, customizer, equalFunc, stack) {\n var isPartial = bitmask & COMPARE_PARTIAL_FLAG,\n arrLength = array.length,\n othLength = other.length;\n\n if (arrLength != othLength && !(isPartial && othLength > arrLength)) {\n return false;\n }\n // Check that cyclic values are equal.\n var arrStacked = stack.get(array);\n var othStacked = stack.get(other);\n if (arrStacked && othStacked) {\n return arrStacked == other && othStacked == array;\n }\n var index = -1,\n result = true,\n seen = (bitmask & COMPARE_UNORDERED_FLAG) ? new SetCache : undefined;\n\n stack.set(array, other);\n stack.set(other, array);\n\n // Ignore non-index properties.\n while (++index < arrLength) {\n var arrValue = array[index],\n othValue = other[index];\n\n if (customizer) {\n var compared = isPartial\n ? customizer(othValue, arrValue, index, other, array, stack)\n : customizer(arrValue, othValue, index, array, other, stack);\n }\n if (compared !== undefined) {\n if (compared) {\n continue;\n }\n result = false;\n break;\n }\n // Recursively compare arrays (susceptible to call stack limits).\n if (seen) {\n if (!arraySome(other, function(othValue, othIndex) {\n if (!cacheHas(seen, othIndex) &&\n (arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) {\n return seen.push(othIndex);\n }\n })) {\n result = false;\n break;\n }\n } else if (!(\n arrValue === othValue ||\n equalFunc(arrValue, othValue, bitmask, customizer, stack)\n )) {\n result = false;\n break;\n }\n }\n stack['delete'](array);\n stack['delete'](other);\n return result;\n }\n\n /**\n * A specialized version of `baseIsEqualDeep` for comparing objects of\n * the same `toStringTag`.\n *\n * **Note:** This function only supports comparing values with tags of\n * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {string} tag The `toStringTag` of the objects to compare.\n * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n * @param {Function} customizer The function to customize comparisons.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Object} stack Tracks traversed `object` and `other` objects.\n * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n */\n function equalByTag(object, other, tag, bitmask, customizer, equalFunc, stack) {\n switch (tag) {\n case dataViewTag:\n if ((object.byteLength != other.byteLength) ||\n (object.byteOffset != other.byteOffset)) {\n return false;\n }\n object = object.buffer;\n other = other.buffer;\n\n case arrayBufferTag:\n if ((object.byteLength != other.byteLength) ||\n !equalFunc(new Uint8Array(object), new Uint8Array(other))) {\n return false;\n }\n return true;\n\n case boolTag:\n case dateTag:\n case numberTag:\n // Coerce booleans to `1` or `0` and dates to milliseconds.\n // Invalid dates are coerced to `NaN`.\n return eq(+object, +other);\n\n case errorTag:\n return object.name == other.name && object.message == other.message;\n\n case regexpTag:\n case stringTag:\n // Coerce regexes to strings and treat strings, primitives and objects,\n // as equal. See http://www.ecma-international.org/ecma-262/7.0/#sec-regexp.prototype.tostring\n // for more details.\n return object == (other + '');\n\n case mapTag:\n var convert = mapToArray;\n\n case setTag:\n var isPartial = bitmask & COMPARE_PARTIAL_FLAG;\n convert || (convert = setToArray);\n\n if (object.size != other.size && !isPartial) {\n return false;\n }\n // Assume cyclic values are equal.\n var stacked = stack.get(object);\n if (stacked) {\n return stacked == other;\n }\n bitmask |= COMPARE_UNORDERED_FLAG;\n\n // Recursively compare objects (susceptible to call stack limits).\n stack.set(object, other);\n var result = equalArrays(convert(object), convert(other), bitmask, customizer, equalFunc, stack);\n stack['delete'](object);\n return result;\n\n case symbolTag:\n if (symbolValueOf) {\n return symbolValueOf.call(object) == symbolValueOf.call(other);\n }\n }\n return false;\n }\n\n /**\n * A specialized version of `baseIsEqualDeep` for objects with support for\n * partial deep comparisons.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n * @param {Function} customizer The function to customize comparisons.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Object} stack Tracks traversed `object` and `other` objects.\n * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n */\n function equalObjects(object, other, bitmask, customizer, equalFunc, stack) {\n var isPartial = bitmask & COMPARE_PARTIAL_FLAG,\n objProps = getAllKeys(object),\n objLength = objProps.length,\n othProps = getAllKeys(other),\n othLength = othProps.length;\n\n if (objLength != othLength && !isPartial) {\n return false;\n }\n var index = objLength;\n while (index--) {\n var key = objProps[index];\n if (!(isPartial ? key in other : hasOwnProperty.call(other, key))) {\n return false;\n }\n }\n // Check that cyclic values are equal.\n var objStacked = stack.get(object);\n var othStacked = stack.get(other);\n if (objStacked && othStacked) {\n return objStacked == other && othStacked == object;\n }\n var result = true;\n stack.set(object, other);\n stack.set(other, object);\n\n var skipCtor = isPartial;\n while (++index < objLength) {\n key = objProps[index];\n var objValue = object[key],\n othValue = other[key];\n\n if (customizer) {\n var compared = isPartial\n ? customizer(othValue, objValue, key, other, object, stack)\n : customizer(objValue, othValue, key, object, other, stack);\n }\n // Recursively compare objects (susceptible to call stack limits).\n if (!(compared === undefined\n ? (objValue === othValue || equalFunc(objValue, othValue, bitmask, customizer, stack))\n : compared\n )) {\n result = false;\n break;\n }\n skipCtor || (skipCtor = key == 'constructor');\n }\n if (result && !skipCtor) {\n var objCtor = object.constructor,\n othCtor = other.constructor;\n\n // Non `Object` object instances with different constructors are not equal.\n if (objCtor != othCtor &&\n ('constructor' in object && 'constructor' in other) &&\n !(typeof objCtor == 'function' && objCtor instanceof objCtor &&\n typeof othCtor == 'function' && othCtor instanceof othCtor)) {\n result = false;\n }\n }\n stack['delete'](object);\n stack['delete'](other);\n return result;\n }\n\n /**\n * A specialized version of `baseRest` which flattens the rest array.\n *\n * @private\n * @param {Function} func The function to apply a rest parameter to.\n * @returns {Function} Returns the new function.\n */\n function flatRest(func) {\n return setToString(overRest(func, undefined, flatten), func + '');\n }\n\n /**\n * Creates an array of own enumerable property names and symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names and symbols.\n */\n function getAllKeys(object) {\n return baseGetAllKeys(object, keys, getSymbols);\n }\n\n /**\n * Creates an array of own and inherited enumerable property names and\n * symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names and symbols.\n */\n function getAllKeysIn(object) {\n return baseGetAllKeys(object, keysIn, getSymbolsIn);\n }\n\n /**\n * Gets metadata for `func`.\n *\n * @private\n * @param {Function} func The function to query.\n * @returns {*} Returns the metadata for `func`.\n */\n var getData = !metaMap ? noop : function(func) {\n return metaMap.get(func);\n };\n\n /**\n * Gets the name of `func`.\n *\n * @private\n * @param {Function} func The function to query.\n * @returns {string} Returns the function name.\n */\n function getFuncName(func) {\n var result = (func.name + ''),\n array = realNames[result],\n length = hasOwnProperty.call(realNames, result) ? array.length : 0;\n\n while (length--) {\n var data = array[length],\n otherFunc = data.func;\n if (otherFunc == null || otherFunc == func) {\n return data.name;\n }\n }\n return result;\n }\n\n /**\n * Gets the argument placeholder value for `func`.\n *\n * @private\n * @param {Function} func The function to inspect.\n * @returns {*} Returns the placeholder value.\n */\n function getHolder(func) {\n var object = hasOwnProperty.call(lodash, 'placeholder') ? lodash : func;\n return object.placeholder;\n }\n\n /**\n * Gets the appropriate \"iteratee\" function. If `_.iteratee` is customized,\n * this function returns the custom method, otherwise it returns `baseIteratee`.\n * If arguments are provided, the chosen function is invoked with them and\n * its result is returned.\n *\n * @private\n * @param {*} [value] The value to convert to an iteratee.\n * @param {number} [arity] The arity of the created iteratee.\n * @returns {Function} Returns the chosen function or its result.\n */\n function getIteratee() {\n var result = lodash.iteratee || iteratee;\n result = result === iteratee ? baseIteratee : result;\n return arguments.length ? result(arguments[0], arguments[1]) : result;\n }\n\n /**\n * Gets the data for `map`.\n *\n * @private\n * @param {Object} map The map to query.\n * @param {string} key The reference key.\n * @returns {*} Returns the map data.\n */\n function getMapData(map, key) {\n var data = map.__data__;\n return isKeyable(key)\n ? data[typeof key == 'string' ? 'string' : 'hash']\n : data.map;\n }\n\n /**\n * Gets the property names, values, and compare flags of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the match data of `object`.\n */\n function getMatchData(object) {\n var result = keys(object),\n length = result.length;\n\n while (length--) {\n var key = result[length],\n value = object[key];\n\n result[length] = [key, value, isStrictComparable(value)];\n }\n return result;\n }\n\n /**\n * Gets the native function at `key` of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {string} key The key of the method to get.\n * @returns {*} Returns the function if it's native, else `undefined`.\n */\n function getNative(object, key) {\n var value = getValue(object, key);\n return baseIsNative(value) ? value : undefined;\n }\n\n /**\n * A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values.\n *\n * @private\n * @param {*} value The value to query.\n * @returns {string} Returns the raw `toStringTag`.\n */\n function getRawTag(value) {\n var isOwn = hasOwnProperty.call(value, symToStringTag),\n tag = value[symToStringTag];\n\n try {\n value[symToStringTag] = undefined;\n var unmasked = true;\n } catch (e) {}\n\n var result = nativeObjectToString.call(value);\n if (unmasked) {\n if (isOwn) {\n value[symToStringTag] = tag;\n } else {\n delete value[symToStringTag];\n }\n }\n return result;\n }\n\n /**\n * Creates an array of the own enumerable symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of symbols.\n */\n var getSymbols = !nativeGetSymbols ? stubArray : function(object) {\n if (object == null) {\n return [];\n }\n object = Object(object);\n return arrayFilter(nativeGetSymbols(object), function(symbol) {\n return propertyIsEnumerable.call(object, symbol);\n });\n };\n\n /**\n * Creates an array of the own and inherited enumerable symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of symbols.\n */\n var getSymbolsIn = !nativeGetSymbols ? stubArray : function(object) {\n var result = [];\n while (object) {\n arrayPush(result, getSymbols(object));\n object = getPrototype(object);\n }\n return result;\n };\n\n /**\n * Gets the `toStringTag` of `value`.\n *\n * @private\n * @param {*} value The value to query.\n * @returns {string} Returns the `toStringTag`.\n */\n var getTag = baseGetTag;\n\n // Fallback for data views, maps, sets, and weak maps in IE 11 and promises in Node.js < 6.\n if ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) ||\n (Map && getTag(new Map) != mapTag) ||\n (Promise && getTag(Promise.resolve()) != promiseTag) ||\n (Set && getTag(new Set) != setTag) ||\n (WeakMap && getTag(new WeakMap) != weakMapTag)) {\n getTag = function(value) {\n var result = baseGetTag(value),\n Ctor = result == objectTag ? value.constructor : undefined,\n ctorString = Ctor ? toSource(Ctor) : '';\n\n if (ctorString) {\n switch (ctorString) {\n case dataViewCtorString: return dataViewTag;\n case mapCtorString: return mapTag;\n case promiseCtorString: return promiseTag;\n case setCtorString: return setTag;\n case weakMapCtorString: return weakMapTag;\n }\n }\n return result;\n };\n }\n\n /**\n * Gets the view, applying any `transforms` to the `start` and `end` positions.\n *\n * @private\n * @param {number} start The start of the view.\n * @param {number} end The end of the view.\n * @param {Array} transforms The transformations to apply to the view.\n * @returns {Object} Returns an object containing the `start` and `end`\n * positions of the view.\n */\n function getView(start, end, transforms) {\n var index = -1,\n length = transforms.length;\n\n while (++index < length) {\n var data = transforms[index],\n size = data.size;\n\n switch (data.type) {\n case 'drop': start += size; break;\n case 'dropRight': end -= size; break;\n case 'take': end = nativeMin(end, start + size); break;\n case 'takeRight': start = nativeMax(start, end - size); break;\n }\n }\n return { 'start': start, 'end': end };\n }\n\n /**\n * Extracts wrapper details from the `source` body comment.\n *\n * @private\n * @param {string} source The source to inspect.\n * @returns {Array} Returns the wrapper details.\n */\n function getWrapDetails(source) {\n var match = source.match(reWrapDetails);\n return match ? match[1].split(reSplitDetails) : [];\n }\n\n /**\n * Checks if `path` exists on `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array|string} path The path to check.\n * @param {Function} hasFunc The function to check properties.\n * @returns {boolean} Returns `true` if `path` exists, else `false`.\n */\n function hasPath(object, path, hasFunc) {\n path = castPath(path, object);\n\n var index = -1,\n length = path.length,\n result = false;\n\n while (++index < length) {\n var key = toKey(path[index]);\n if (!(result = object != null && hasFunc(object, key))) {\n break;\n }\n object = object[key];\n }\n if (result || ++index != length) {\n return result;\n }\n length = object == null ? 0 : object.length;\n return !!length && isLength(length) && isIndex(key, length) &&\n (isArray(object) || isArguments(object));\n }\n\n /**\n * Initializes an array clone.\n *\n * @private\n * @param {Array} array The array to clone.\n * @returns {Array} Returns the initialized clone.\n */\n function initCloneArray(array) {\n var length = array.length,\n result = new array.constructor(length);\n\n // Add properties assigned by `RegExp#exec`.\n if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) {\n result.index = array.index;\n result.input = array.input;\n }\n return result;\n }\n\n /**\n * Initializes an object clone.\n *\n * @private\n * @param {Object} object The object to clone.\n * @returns {Object} Returns the initialized clone.\n */\n function initCloneObject(object) {\n return (typeof object.constructor == 'function' && !isPrototype(object))\n ? baseCreate(getPrototype(object))\n : {};\n }\n\n /**\n * Initializes an object clone based on its `toStringTag`.\n *\n * **Note:** This function only supports cloning values with tags of\n * `Boolean`, `Date`, `Error`, `Map`, `Number`, `RegExp`, `Set`, or `String`.\n *\n * @private\n * @param {Object} object The object to clone.\n * @param {string} tag The `toStringTag` of the object to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Object} Returns the initialized clone.\n */\n function initCloneByTag(object, tag, isDeep) {\n var Ctor = object.constructor;\n switch (tag) {\n case arrayBufferTag:\n return cloneArrayBuffer(object);\n\n case boolTag:\n case dateTag:\n return new Ctor(+object);\n\n case dataViewTag:\n return cloneDataView(object, isDeep);\n\n case float32Tag: case float64Tag:\n case int8Tag: case int16Tag: case int32Tag:\n case uint8Tag: case uint8ClampedTag: case uint16Tag: case uint32Tag:\n return cloneTypedArray(object, isDeep);\n\n case mapTag:\n return new Ctor;\n\n case numberTag:\n case stringTag:\n return new Ctor(object);\n\n case regexpTag:\n return cloneRegExp(object);\n\n case setTag:\n return new Ctor;\n\n case symbolTag:\n return cloneSymbol(object);\n }\n }\n\n /**\n * Inserts wrapper `details` in a comment at the top of the `source` body.\n *\n * @private\n * @param {string} source The source to modify.\n * @returns {Array} details The details to insert.\n * @returns {string} Returns the modified source.\n */\n function insertWrapDetails(source, details) {\n var length = details.length;\n if (!length) {\n return source;\n }\n var lastIndex = length - 1;\n details[lastIndex] = (length > 1 ? '& ' : '') + details[lastIndex];\n details = details.join(length > 2 ? ', ' : ' ');\n return source.replace(reWrapComment, '{\\n/* [wrapped with ' + details + '] */\\n');\n }\n\n /**\n * Checks if `value` is a flattenable `arguments` object or array.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is flattenable, else `false`.\n */\n function isFlattenable(value) {\n return isArray(value) || isArguments(value) ||\n !!(spreadableSymbol && value && value[spreadableSymbol]);\n }\n\n /**\n * Checks if `value` is a valid array-like index.\n *\n * @private\n * @param {*} value The value to check.\n * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.\n * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.\n */\n function isIndex(value, length) {\n var type = typeof value;\n length = length == null ? MAX_SAFE_INTEGER : length;\n\n return !!length &&\n (type == 'number' ||\n (type != 'symbol' && reIsUint.test(value))) &&\n (value > -1 && value % 1 == 0 && value < length);\n }\n\n /**\n * Checks if the given arguments are from an iteratee call.\n *\n * @private\n * @param {*} value The potential iteratee value argument.\n * @param {*} index The potential iteratee index or key argument.\n * @param {*} object The potential iteratee object argument.\n * @returns {boolean} Returns `true` if the arguments are from an iteratee call,\n * else `false`.\n */\n function isIterateeCall(value, index, object) {\n if (!isObject(object)) {\n return false;\n }\n var type = typeof index;\n if (type == 'number'\n ? (isArrayLike(object) && isIndex(index, object.length))\n : (type == 'string' && index in object)\n ) {\n return eq(object[index], value);\n }\n return false;\n }\n\n /**\n * Checks if `value` is a property name and not a property path.\n *\n * @private\n * @param {*} value The value to check.\n * @param {Object} [object] The object to query keys on.\n * @returns {boolean} Returns `true` if `value` is a property name, else `false`.\n */\n function isKey(value, object) {\n if (isArray(value)) {\n return false;\n }\n var type = typeof value;\n if (type == 'number' || type == 'symbol' || type == 'boolean' ||\n value == null || isSymbol(value)) {\n return true;\n }\n return reIsPlainProp.test(value) || !reIsDeepProp.test(value) ||\n (object != null && value in Object(object));\n }\n\n /**\n * Checks if `value` is suitable for use as unique object key.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is suitable, else `false`.\n */\n function isKeyable(value) {\n var type = typeof value;\n return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean')\n ? (value !== '__proto__')\n : (value === null);\n }\n\n /**\n * Checks if `func` has a lazy counterpart.\n *\n * @private\n * @param {Function} func The function to check.\n * @returns {boolean} Returns `true` if `func` has a lazy counterpart,\n * else `false`.\n */\n function isLaziable(func) {\n var funcName = getFuncName(func),\n other = lodash[funcName];\n\n if (typeof other != 'function' || !(funcName in LazyWrapper.prototype)) {\n return false;\n }\n if (func === other) {\n return true;\n }\n var data = getData(other);\n return !!data && func === data[0];\n }\n\n /**\n * Checks if `func` has its source masked.\n *\n * @private\n * @param {Function} func The function to check.\n * @returns {boolean} Returns `true` if `func` is masked, else `false`.\n */\n function isMasked(func) {\n return !!maskSrcKey && (maskSrcKey in func);\n }\n\n /**\n * Checks if `func` is capable of being masked.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `func` is maskable, else `false`.\n */\n var isMaskable = coreJsData ? isFunction : stubFalse;\n\n /**\n * Checks if `value` is likely a prototype object.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a prototype, else `false`.\n */\n function isPrototype(value) {\n var Ctor = value && value.constructor,\n proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto;\n\n return value === proto;\n }\n\n /**\n * Checks if `value` is suitable for strict equality comparisons, i.e. `===`.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` if suitable for strict\n * equality comparisons, else `false`.\n */\n function isStrictComparable(value) {\n return value === value && !isObject(value);\n }\n\n /**\n * A specialized version of `matchesProperty` for source values suitable\n * for strict equality comparisons, i.e. `===`.\n *\n * @private\n * @param {string} key The key of the property to get.\n * @param {*} srcValue The value to match.\n * @returns {Function} Returns the new spec function.\n */\n function matchesStrictComparable(key, srcValue) {\n return function(object) {\n if (object == null) {\n return false;\n }\n return object[key] === srcValue &&\n (srcValue !== undefined || (key in Object(object)));\n };\n }\n\n /**\n * A specialized version of `_.memoize` which clears the memoized function's\n * cache when it exceeds `MAX_MEMOIZE_SIZE`.\n *\n * @private\n * @param {Function} func The function to have its output memoized.\n * @returns {Function} Returns the new memoized function.\n */\n function memoizeCapped(func) {\n var result = memoize(func, function(key) {\n if (cache.size === MAX_MEMOIZE_SIZE) {\n cache.clear();\n }\n return key;\n });\n\n var cache = result.cache;\n return result;\n }\n\n /**\n * Merges the function metadata of `source` into `data`.\n *\n * Merging metadata reduces the number of wrappers used to invoke a function.\n * This is possible because methods like `_.bind`, `_.curry`, and `_.partial`\n * may be applied regardless of execution order. Methods like `_.ary` and\n * `_.rearg` modify function arguments, making the order in which they are\n * executed important, preventing the merging of metadata. However, we make\n * an exception for a safe combined case where curried functions have `_.ary`\n * and or `_.rearg` applied.\n *\n * @private\n * @param {Array} data The destination metadata.\n * @param {Array} source The source metadata.\n * @returns {Array} Returns `data`.\n */\n function mergeData(data, source) {\n var bitmask = data[1],\n srcBitmask = source[1],\n newBitmask = bitmask | srcBitmask,\n isCommon = newBitmask < (WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG | WRAP_ARY_FLAG);\n\n var isCombo =\n ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_CURRY_FLAG)) ||\n ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_REARG_FLAG) && (data[7].length <= source[8])) ||\n ((srcBitmask == (WRAP_ARY_FLAG | WRAP_REARG_FLAG)) && (source[7].length <= source[8]) && (bitmask == WRAP_CURRY_FLAG));\n\n // Exit early if metadata can't be merged.\n if (!(isCommon || isCombo)) {\n return data;\n }\n // Use source `thisArg` if available.\n if (srcBitmask & WRAP_BIND_FLAG) {\n data[2] = source[2];\n // Set when currying a bound function.\n newBitmask |= bitmask & WRAP_BIND_FLAG ? 0 : WRAP_CURRY_BOUND_FLAG;\n }\n // Compose partial arguments.\n var value = source[3];\n if (value) {\n var partials = data[3];\n data[3] = partials ? composeArgs(partials, value, source[4]) : value;\n data[4] = partials ? replaceHolders(data[3], PLACEHOLDER) : source[4];\n }\n // Compose partial right arguments.\n value = source[5];\n if (value) {\n partials = data[5];\n data[5] = partials ? composeArgsRight(partials, value, source[6]) : value;\n data[6] = partials ? replaceHolders(data[5], PLACEHOLDER) : source[6];\n }\n // Use source `argPos` if available.\n value = source[7];\n if (value) {\n data[7] = value;\n }\n // Use source `ary` if it's smaller.\n if (srcBitmask & WRAP_ARY_FLAG) {\n data[8] = data[8] == null ? source[8] : nativeMin(data[8], source[8]);\n }\n // Use source `arity` if one is not provided.\n if (data[9] == null) {\n data[9] = source[9];\n }\n // Use source `func` and merge bitmasks.\n data[0] = source[0];\n data[1] = newBitmask;\n\n return data;\n }\n\n /**\n * This function is like\n * [`Object.keys`](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)\n * except that it includes inherited enumerable properties.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n */\n function nativeKeysIn(object) {\n var result = [];\n if (object != null) {\n for (var key in Object(object)) {\n result.push(key);\n }\n }\n return result;\n }\n\n /**\n * Converts `value` to a string using `Object.prototype.toString`.\n *\n * @private\n * @param {*} value The value to convert.\n * @returns {string} Returns the converted string.\n */\n function objectToString(value) {\n return nativeObjectToString.call(value);\n }\n\n /**\n * A specialized version of `baseRest` which transforms the rest array.\n *\n * @private\n * @param {Function} func The function to apply a rest parameter to.\n * @param {number} [start=func.length-1] The start position of the rest parameter.\n * @param {Function} transform The rest array transform.\n * @returns {Function} Returns the new function.\n */\n function overRest(func, start, transform) {\n start = nativeMax(start === undefined ? (func.length - 1) : start, 0);\n return function() {\n var args = arguments,\n index = -1,\n length = nativeMax(args.length - start, 0),\n array = Array(length);\n\n while (++index < length) {\n array[index] = args[start + index];\n }\n index = -1;\n var otherArgs = Array(start + 1);\n while (++index < start) {\n otherArgs[index] = args[index];\n }\n otherArgs[start] = transform(array);\n return apply(func, this, otherArgs);\n };\n }\n\n /**\n * Gets the parent value at `path` of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array} path The path to get the parent value of.\n * @returns {*} Returns the parent value.\n */\n function parent(object, path) {\n return path.length < 2 ? object : baseGet(object, baseSlice(path, 0, -1));\n }\n\n /**\n * Reorder `array` according to the specified indexes where the element at\n * the first index is assigned as the first element, the element at\n * the second index is assigned as the second element, and so on.\n *\n * @private\n * @param {Array} array The array to reorder.\n * @param {Array} indexes The arranged array indexes.\n * @returns {Array} Returns `array`.\n */\n function reorder(array, indexes) {\n var arrLength = array.length,\n length = nativeMin(indexes.length, arrLength),\n oldArray = copyArray(array);\n\n while (length--) {\n var index = indexes[length];\n array[length] = isIndex(index, arrLength) ? oldArray[index] : undefined;\n }\n return array;\n }\n\n /**\n * Gets the value at `key`, unless `key` is \"__proto__\" or \"constructor\".\n *\n * @private\n * @param {Object} object The object to query.\n * @param {string} key The key of the property to get.\n * @returns {*} Returns the property value.\n */\n function safeGet(object, key) {\n if (key === 'constructor' && typeof object[key] === 'function') {\n return;\n }\n\n if (key == '__proto__') {\n return;\n }\n\n return object[key];\n }\n\n /**\n * Sets metadata for `func`.\n *\n * **Note:** If this function becomes hot, i.e. is invoked a lot in a short\n * period of time, it will trip its breaker and transition to an identity\n * function to avoid garbage collection pauses in V8. See\n * [V8 issue 2070](https://bugs.chromium.org/p/v8/issues/detail?id=2070)\n * for more details.\n *\n * @private\n * @param {Function} func The function to associate metadata with.\n * @param {*} data The metadata.\n * @returns {Function} Returns `func`.\n */\n var setData = shortOut(baseSetData);\n\n /**\n * A simple wrapper around the global [`setTimeout`](https://mdn.io/setTimeout).\n *\n * @private\n * @param {Function} func The function to delay.\n * @param {number} wait The number of milliseconds to delay invocation.\n * @returns {number|Object} Returns the timer id or timeout object.\n */\n var setTimeout = ctxSetTimeout || function(func, wait) {\n return root.setTimeout(func, wait);\n };\n\n /**\n * Sets the `toString` method of `func` to return `string`.\n *\n * @private\n * @param {Function} func The function to modify.\n * @param {Function} string The `toString` result.\n * @returns {Function} Returns `func`.\n */\n var setToString = shortOut(baseSetToString);\n\n /**\n * Sets the `toString` method of `wrapper` to mimic the source of `reference`\n * with wrapper details in a comment at the top of the source body.\n *\n * @private\n * @param {Function} wrapper The function to modify.\n * @param {Function} reference The reference function.\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n * @returns {Function} Returns `wrapper`.\n */\n function setWrapToString(wrapper, reference, bitmask) {\n var source = (reference + '');\n return setToString(wrapper, insertWrapDetails(source, updateWrapDetails(getWrapDetails(source), bitmask)));\n }\n\n /**\n * Creates a function that'll short out and invoke `identity` instead\n * of `func` when it's called `HOT_COUNT` or more times in `HOT_SPAN`\n * milliseconds.\n *\n * @private\n * @param {Function} func The function to restrict.\n * @returns {Function} Returns the new shortable function.\n */\n function shortOut(func) {\n var count = 0,\n lastCalled = 0;\n\n return function() {\n var stamp = nativeNow(),\n remaining = HOT_SPAN - (stamp - lastCalled);\n\n lastCalled = stamp;\n if (remaining > 0) {\n if (++count >= HOT_COUNT) {\n return arguments[0];\n }\n } else {\n count = 0;\n }\n return func.apply(undefined, arguments);\n };\n }\n\n /**\n * A specialized version of `_.shuffle` which mutates and sets the size of `array`.\n *\n * @private\n * @param {Array} array The array to shuffle.\n * @param {number} [size=array.length] The size of `array`.\n * @returns {Array} Returns `array`.\n */\n function shuffleSelf(array, size) {\n var index = -1,\n length = array.length,\n lastIndex = length - 1;\n\n size = size === undefined ? length : size;\n while (++index < size) {\n var rand = baseRandom(index, lastIndex),\n value = array[rand];\n\n array[rand] = array[index];\n array[index] = value;\n }\n array.length = size;\n return array;\n }\n\n /**\n * Converts `string` to a property path array.\n *\n * @private\n * @param {string} string The string to convert.\n * @returns {Array} Returns the property path array.\n */\n var stringToPath = memoizeCapped(function(string) {\n var result = [];\n if (string.charCodeAt(0) === 46 /* . */) {\n result.push('');\n }\n string.replace(rePropName, function(match, number, quote, subString) {\n result.push(quote ? subString.replace(reEscapeChar, '$1') : (number || match));\n });\n return result;\n });\n\n /**\n * Converts `value` to a string key if it's not a string or symbol.\n *\n * @private\n * @param {*} value The value to inspect.\n * @returns {string|symbol} Returns the key.\n */\n function toKey(value) {\n if (typeof value == 'string' || isSymbol(value)) {\n return value;\n }\n var result = (value + '');\n return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;\n }\n\n /**\n * Converts `func` to its source code.\n *\n * @private\n * @param {Function} func The function to convert.\n * @returns {string} Returns the source code.\n */\n function toSource(func) {\n if (func != null) {\n try {\n return funcToString.call(func);\n } catch (e) {}\n try {\n return (func + '');\n } catch (e) {}\n }\n return '';\n }\n\n /**\n * Updates wrapper `details` based on `bitmask` flags.\n *\n * @private\n * @returns {Array} details The details to modify.\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n * @returns {Array} Returns `details`.\n */\n function updateWrapDetails(details, bitmask) {\n arrayEach(wrapFlags, function(pair) {\n var value = '_.' + pair[0];\n if ((bitmask & pair[1]) && !arrayIncludes(details, value)) {\n details.push(value);\n }\n });\n return details.sort();\n }\n\n /**\n * Creates a clone of `wrapper`.\n *\n * @private\n * @param {Object} wrapper The wrapper to clone.\n * @returns {Object} Returns the cloned wrapper.\n */\n function wrapperClone(wrapper) {\n if (wrapper instanceof LazyWrapper) {\n return wrapper.clone();\n }\n var result = new LodashWrapper(wrapper.__wrapped__, wrapper.__chain__);\n result.__actions__ = copyArray(wrapper.__actions__);\n result.__index__ = wrapper.__index__;\n result.__values__ = wrapper.__values__;\n return result;\n }\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates an array of elements split into groups the length of `size`.\n * If `array` can't be split evenly, the final chunk will be the remaining\n * elements.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to process.\n * @param {number} [size=1] The length of each chunk\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the new array of chunks.\n * @example\n *\n * _.chunk(['a', 'b', 'c', 'd'], 2);\n * // => [['a', 'b'], ['c', 'd']]\n *\n * _.chunk(['a', 'b', 'c', 'd'], 3);\n * // => [['a', 'b', 'c'], ['d']]\n */\n function chunk(array, size, guard) {\n if ((guard ? isIterateeCall(array, size, guard) : size === undefined)) {\n size = 1;\n } else {\n size = nativeMax(toInteger(size), 0);\n }\n var length = array == null ? 0 : array.length;\n if (!length || size < 1) {\n return [];\n }\n var index = 0,\n resIndex = 0,\n result = Array(nativeCeil(length / size));\n\n while (index < length) {\n result[resIndex++] = baseSlice(array, index, (index += size));\n }\n return result;\n }\n\n /**\n * Creates an array with all falsey values removed. The values `false`, `null`,\n * `0`, `\"\"`, `undefined`, and `NaN` are falsey.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to compact.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * _.compact([0, 1, false, 2, '', 3]);\n * // => [1, 2, 3]\n */\n function compact(array) {\n var index = -1,\n length = array == null ? 0 : array.length,\n resIndex = 0,\n result = [];\n\n while (++index < length) {\n var value = array[index];\n if (value) {\n result[resIndex++] = value;\n }\n }\n return result;\n }\n\n /**\n * Creates a new array concatenating `array` with any additional arrays\n * and/or values.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to concatenate.\n * @param {...*} [values] The values to concatenate.\n * @returns {Array} Returns the new concatenated array.\n * @example\n *\n * var array = [1];\n * var other = _.concat(array, 2, [3], [[4]]);\n *\n * console.log(other);\n * // => [1, 2, 3, [4]]\n *\n * console.log(array);\n * // => [1]\n */\n function concat() {\n var length = arguments.length;\n if (!length) {\n return [];\n }\n var args = Array(length - 1),\n array = arguments[0],\n index = length;\n\n while (index--) {\n args[index - 1] = arguments[index];\n }\n return arrayPush(isArray(array) ? copyArray(array) : [array], baseFlatten(args, 1));\n }\n\n /**\n * Creates an array of `array` values not included in the other given arrays\n * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons. The order and references of result values are\n * determined by the first array.\n *\n * **Note:** Unlike `_.pullAll`, this method returns a new array.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {...Array} [values] The values to exclude.\n * @returns {Array} Returns the new array of filtered values.\n * @see _.without, _.xor\n * @example\n *\n * _.difference([2, 1], [2, 3]);\n * // => [1]\n */\n var difference = baseRest(function(array, values) {\n return isArrayLikeObject(array)\n ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true))\n : [];\n });\n\n /**\n * This method is like `_.difference` except that it accepts `iteratee` which\n * is invoked for each element of `array` and `values` to generate the criterion\n * by which they're compared. The order and references of result values are\n * determined by the first array. The iteratee is invoked with one argument:\n * (value).\n *\n * **Note:** Unlike `_.pullAllBy`, this method returns a new array.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {...Array} [values] The values to exclude.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * _.differenceBy([2.1, 1.2], [2.3, 3.4], Math.floor);\n * // => [1.2]\n *\n * // The `_.property` iteratee shorthand.\n * _.differenceBy([{ 'x': 2 }, { 'x': 1 }], [{ 'x': 1 }], 'x');\n * // => [{ 'x': 2 }]\n */\n var differenceBy = baseRest(function(array, values) {\n var iteratee = last(values);\n if (isArrayLikeObject(iteratee)) {\n iteratee = undefined;\n }\n return isArrayLikeObject(array)\n ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), getIteratee(iteratee, 2))\n : [];\n });\n\n /**\n * This method is like `_.difference` except that it accepts `comparator`\n * which is invoked to compare elements of `array` to `values`. The order and\n * references of result values are determined by the first array. The comparator\n * is invoked with two arguments: (arrVal, othVal).\n *\n * **Note:** Unlike `_.pullAllWith`, this method returns a new array.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {...Array} [values] The values to exclude.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n *\n * _.differenceWith(objects, [{ 'x': 1, 'y': 2 }], _.isEqual);\n * // => [{ 'x': 2, 'y': 1 }]\n */\n var differenceWith = baseRest(function(array, values) {\n var comparator = last(values);\n if (isArrayLikeObject(comparator)) {\n comparator = undefined;\n }\n return isArrayLikeObject(array)\n ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), undefined, comparator)\n : [];\n });\n\n /**\n * Creates a slice of `array` with `n` elements dropped from the beginning.\n *\n * @static\n * @memberOf _\n * @since 0.5.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=1] The number of elements to drop.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.drop([1, 2, 3]);\n * // => [2, 3]\n *\n * _.drop([1, 2, 3], 2);\n * // => [3]\n *\n * _.drop([1, 2, 3], 5);\n * // => []\n *\n * _.drop([1, 2, 3], 0);\n * // => [1, 2, 3]\n */\n function drop(array, n, guard) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return [];\n }\n n = (guard || n === undefined) ? 1 : toInteger(n);\n return baseSlice(array, n < 0 ? 0 : n, length);\n }\n\n /**\n * Creates a slice of `array` with `n` elements dropped from the end.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=1] The number of elements to drop.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.dropRight([1, 2, 3]);\n * // => [1, 2]\n *\n * _.dropRight([1, 2, 3], 2);\n * // => [1]\n *\n * _.dropRight([1, 2, 3], 5);\n * // => []\n *\n * _.dropRight([1, 2, 3], 0);\n * // => [1, 2, 3]\n */\n function dropRight(array, n, guard) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return [];\n }\n n = (guard || n === undefined) ? 1 : toInteger(n);\n n = length - n;\n return baseSlice(array, 0, n < 0 ? 0 : n);\n }\n\n /**\n * Creates a slice of `array` excluding elements dropped from the end.\n * Elements are dropped until `predicate` returns falsey. The predicate is\n * invoked with three arguments: (value, index, array).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'active': true },\n * { 'user': 'fred', 'active': false },\n * { 'user': 'pebbles', 'active': false }\n * ];\n *\n * _.dropRightWhile(users, function(o) { return !o.active; });\n * // => objects for ['barney']\n *\n * // The `_.matches` iteratee shorthand.\n * _.dropRightWhile(users, { 'user': 'pebbles', 'active': false });\n * // => objects for ['barney', 'fred']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.dropRightWhile(users, ['active', false]);\n * // => objects for ['barney']\n *\n * // The `_.property` iteratee shorthand.\n * _.dropRightWhile(users, 'active');\n * // => objects for ['barney', 'fred', 'pebbles']\n */\n function dropRightWhile(array, predicate) {\n return (array && array.length)\n ? baseWhile(array, getIteratee(predicate, 3), true, true)\n : [];\n }\n\n /**\n * Creates a slice of `array` excluding elements dropped from the beginning.\n * Elements are dropped until `predicate` returns falsey. The predicate is\n * invoked with three arguments: (value, index, array).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'active': false },\n * { 'user': 'fred', 'active': false },\n * { 'user': 'pebbles', 'active': true }\n * ];\n *\n * _.dropWhile(users, function(o) { return !o.active; });\n * // => objects for ['pebbles']\n *\n * // The `_.matches` iteratee shorthand.\n * _.dropWhile(users, { 'user': 'barney', 'active': false });\n * // => objects for ['fred', 'pebbles']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.dropWhile(users, ['active', false]);\n * // => objects for ['pebbles']\n *\n * // The `_.property` iteratee shorthand.\n * _.dropWhile(users, 'active');\n * // => objects for ['barney', 'fred', 'pebbles']\n */\n function dropWhile(array, predicate) {\n return (array && array.length)\n ? baseWhile(array, getIteratee(predicate, 3), true)\n : [];\n }\n\n /**\n * Fills elements of `array` with `value` from `start` up to, but not\n * including, `end`.\n *\n * **Note:** This method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 3.2.0\n * @category Array\n * @param {Array} array The array to fill.\n * @param {*} value The value to fill `array` with.\n * @param {number} [start=0] The start position.\n * @param {number} [end=array.length] The end position.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = [1, 2, 3];\n *\n * _.fill(array, 'a');\n * console.log(array);\n * // => ['a', 'a', 'a']\n *\n * _.fill(Array(3), 2);\n * // => [2, 2, 2]\n *\n * _.fill([4, 6, 8, 10], '*', 1, 3);\n * // => [4, '*', '*', 10]\n */\n function fill(array, value, start, end) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return [];\n }\n if (start && typeof start != 'number' && isIterateeCall(array, value, start)) {\n start = 0;\n end = length;\n }\n return baseFill(array, value, start, end);\n }\n\n /**\n * This method is like `_.find` except that it returns the index of the first\n * element `predicate` returns truthy for instead of the element itself.\n *\n * @static\n * @memberOf _\n * @since 1.1.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @param {number} [fromIndex=0] The index to search from.\n * @returns {number} Returns the index of the found element, else `-1`.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'active': false },\n * { 'user': 'fred', 'active': false },\n * { 'user': 'pebbles', 'active': true }\n * ];\n *\n * _.findIndex(users, function(o) { return o.user == 'barney'; });\n * // => 0\n *\n * // The `_.matches` iteratee shorthand.\n * _.findIndex(users, { 'user': 'fred', 'active': false });\n * // => 1\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.findIndex(users, ['active', false]);\n * // => 0\n *\n * // The `_.property` iteratee shorthand.\n * _.findIndex(users, 'active');\n * // => 2\n */\n function findIndex(array, predicate, fromIndex) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return -1;\n }\n var index = fromIndex == null ? 0 : toInteger(fromIndex);\n if (index < 0) {\n index = nativeMax(length + index, 0);\n }\n return baseFindIndex(array, getIteratee(predicate, 3), index);\n }\n\n /**\n * This method is like `_.findIndex` except that it iterates over elements\n * of `collection` from right to left.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @param {number} [fromIndex=array.length-1] The index to search from.\n * @returns {number} Returns the index of the found element, else `-1`.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'active': true },\n * { 'user': 'fred', 'active': false },\n * { 'user': 'pebbles', 'active': false }\n * ];\n *\n * _.findLastIndex(users, function(o) { return o.user == 'pebbles'; });\n * // => 2\n *\n * // The `_.matches` iteratee shorthand.\n * _.findLastIndex(users, { 'user': 'barney', 'active': true });\n * // => 0\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.findLastIndex(users, ['active', false]);\n * // => 2\n *\n * // The `_.property` iteratee shorthand.\n * _.findLastIndex(users, 'active');\n * // => 0\n */\n function findLastIndex(array, predicate, fromIndex) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return -1;\n }\n var index = length - 1;\n if (fromIndex !== undefined) {\n index = toInteger(fromIndex);\n index = fromIndex < 0\n ? nativeMax(length + index, 0)\n : nativeMin(index, length - 1);\n }\n return baseFindIndex(array, getIteratee(predicate, 3), index, true);\n }\n\n /**\n * Flattens `array` a single level deep.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to flatten.\n * @returns {Array} Returns the new flattened array.\n * @example\n *\n * _.flatten([1, [2, [3, [4]], 5]]);\n * // => [1, 2, [3, [4]], 5]\n */\n function flatten(array) {\n var length = array == null ? 0 : array.length;\n return length ? baseFlatten(array, 1) : [];\n }\n\n /**\n * Recursively flattens `array`.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to flatten.\n * @returns {Array} Returns the new flattened array.\n * @example\n *\n * _.flattenDeep([1, [2, [3, [4]], 5]]);\n * // => [1, 2, 3, 4, 5]\n */\n function flattenDeep(array) {\n var length = array == null ? 0 : array.length;\n return length ? baseFlatten(array, INFINITY) : [];\n }\n\n /**\n * Recursively flatten `array` up to `depth` times.\n *\n * @static\n * @memberOf _\n * @since 4.4.0\n * @category Array\n * @param {Array} array The array to flatten.\n * @param {number} [depth=1] The maximum recursion depth.\n * @returns {Array} Returns the new flattened array.\n * @example\n *\n * var array = [1, [2, [3, [4]], 5]];\n *\n * _.flattenDepth(array, 1);\n * // => [1, 2, [3, [4]], 5]\n *\n * _.flattenDepth(array, 2);\n * // => [1, 2, 3, [4], 5]\n */\n function flattenDepth(array, depth) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return [];\n }\n depth = depth === undefined ? 1 : toInteger(depth);\n return baseFlatten(array, depth);\n }\n\n /**\n * The inverse of `_.toPairs`; this method returns an object composed\n * from key-value `pairs`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} pairs The key-value pairs.\n * @returns {Object} Returns the new object.\n * @example\n *\n * _.fromPairs([['a', 1], ['b', 2]]);\n * // => { 'a': 1, 'b': 2 }\n */\n function fromPairs(pairs) {\n var index = -1,\n length = pairs == null ? 0 : pairs.length,\n result = {};\n\n while (++index < length) {\n var pair = pairs[index];\n result[pair[0]] = pair[1];\n }\n return result;\n }\n\n /**\n * Gets the first element of `array`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @alias first\n * @category Array\n * @param {Array} array The array to query.\n * @returns {*} Returns the first element of `array`.\n * @example\n *\n * _.head([1, 2, 3]);\n * // => 1\n *\n * _.head([]);\n * // => undefined\n */\n function head(array) {\n return (array && array.length) ? array[0] : undefined;\n }\n\n /**\n * Gets the index at which the first occurrence of `value` is found in `array`\n * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons. If `fromIndex` is negative, it's used as the\n * offset from the end of `array`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @param {number} [fromIndex=0] The index to search from.\n * @returns {number} Returns the index of the matched value, else `-1`.\n * @example\n *\n * _.indexOf([1, 2, 1, 2], 2);\n * // => 1\n *\n * // Search from the `fromIndex`.\n * _.indexOf([1, 2, 1, 2], 2, 2);\n * // => 3\n */\n function indexOf(array, value, fromIndex) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return -1;\n }\n var index = fromIndex == null ? 0 : toInteger(fromIndex);\n if (index < 0) {\n index = nativeMax(length + index, 0);\n }\n return baseIndexOf(array, value, index);\n }\n\n /**\n * Gets all but the last element of `array`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to query.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.initial([1, 2, 3]);\n * // => [1, 2]\n */\n function initial(array) {\n var length = array == null ? 0 : array.length;\n return length ? baseSlice(array, 0, -1) : [];\n }\n\n /**\n * Creates an array of unique values that are included in all given arrays\n * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons. The order and references of result values are\n * determined by the first array.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @returns {Array} Returns the new array of intersecting values.\n * @example\n *\n * _.intersection([2, 1], [2, 3]);\n * // => [2]\n */\n var intersection = baseRest(function(arrays) {\n var mapped = arrayMap(arrays, castArrayLikeObject);\n return (mapped.length && mapped[0] === arrays[0])\n ? baseIntersection(mapped)\n : [];\n });\n\n /**\n * This method is like `_.intersection` except that it accepts `iteratee`\n * which is invoked for each element of each `arrays` to generate the criterion\n * by which they're compared. The order and references of result values are\n * determined by the first array. The iteratee is invoked with one argument:\n * (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {Array} Returns the new array of intersecting values.\n * @example\n *\n * _.intersectionBy([2.1, 1.2], [2.3, 3.4], Math.floor);\n * // => [2.1]\n *\n * // The `_.property` iteratee shorthand.\n * _.intersectionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');\n * // => [{ 'x': 1 }]\n */\n var intersectionBy = baseRest(function(arrays) {\n var iteratee = last(arrays),\n mapped = arrayMap(arrays, castArrayLikeObject);\n\n if (iteratee === last(mapped)) {\n iteratee = undefined;\n } else {\n mapped.pop();\n }\n return (mapped.length && mapped[0] === arrays[0])\n ? baseIntersection(mapped, getIteratee(iteratee, 2))\n : [];\n });\n\n /**\n * This method is like `_.intersection` except that it accepts `comparator`\n * which is invoked to compare elements of `arrays`. The order and references\n * of result values are determined by the first array. The comparator is\n * invoked with two arguments: (arrVal, othVal).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of intersecting values.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];\n *\n * _.intersectionWith(objects, others, _.isEqual);\n * // => [{ 'x': 1, 'y': 2 }]\n */\n var intersectionWith = baseRest(function(arrays) {\n var comparator = last(arrays),\n mapped = arrayMap(arrays, castArrayLikeObject);\n\n comparator = typeof comparator == 'function' ? comparator : undefined;\n if (comparator) {\n mapped.pop();\n }\n return (mapped.length && mapped[0] === arrays[0])\n ? baseIntersection(mapped, undefined, comparator)\n : [];\n });\n\n /**\n * Converts all elements in `array` into a string separated by `separator`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to convert.\n * @param {string} [separator=','] The element separator.\n * @returns {string} Returns the joined string.\n * @example\n *\n * _.join(['a', 'b', 'c'], '~');\n * // => 'a~b~c'\n */\n function join(array, separator) {\n return array == null ? '' : nativeJoin.call(array, separator);\n }\n\n /**\n * Gets the last element of `array`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to query.\n * @returns {*} Returns the last element of `array`.\n * @example\n *\n * _.last([1, 2, 3]);\n * // => 3\n */\n function last(array) {\n var length = array == null ? 0 : array.length;\n return length ? array[length - 1] : undefined;\n }\n\n /**\n * This method is like `_.indexOf` except that it iterates over elements of\n * `array` from right to left.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @param {number} [fromIndex=array.length-1] The index to search from.\n * @returns {number} Returns the index of the matched value, else `-1`.\n * @example\n *\n * _.lastIndexOf([1, 2, 1, 2], 2);\n * // => 3\n *\n * // Search from the `fromIndex`.\n * _.lastIndexOf([1, 2, 1, 2], 2, 2);\n * // => 1\n */\n function lastIndexOf(array, value, fromIndex) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return -1;\n }\n var index = length;\n if (fromIndex !== undefined) {\n index = toInteger(fromIndex);\n index = index < 0 ? nativeMax(length + index, 0) : nativeMin(index, length - 1);\n }\n return value === value\n ? strictLastIndexOf(array, value, index)\n : baseFindIndex(array, baseIsNaN, index, true);\n }\n\n /**\n * Gets the element at index `n` of `array`. If `n` is negative, the nth\n * element from the end is returned.\n *\n * @static\n * @memberOf _\n * @since 4.11.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=0] The index of the element to return.\n * @returns {*} Returns the nth element of `array`.\n * @example\n *\n * var array = ['a', 'b', 'c', 'd'];\n *\n * _.nth(array, 1);\n * // => 'b'\n *\n * _.nth(array, -2);\n * // => 'c';\n */\n function nth(array, n) {\n return (array && array.length) ? baseNth(array, toInteger(n)) : undefined;\n }\n\n /**\n * Removes all given values from `array` using\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons.\n *\n * **Note:** Unlike `_.without`, this method mutates `array`. Use `_.remove`\n * to remove elements from an array by predicate.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {...*} [values] The values to remove.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = ['a', 'b', 'c', 'a', 'b', 'c'];\n *\n * _.pull(array, 'a', 'c');\n * console.log(array);\n * // => ['b', 'b']\n */\n var pull = baseRest(pullAll);\n\n /**\n * This method is like `_.pull` except that it accepts an array of values to remove.\n *\n * **Note:** Unlike `_.difference`, this method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {Array} values The values to remove.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = ['a', 'b', 'c', 'a', 'b', 'c'];\n *\n * _.pullAll(array, ['a', 'c']);\n * console.log(array);\n * // => ['b', 'b']\n */\n function pullAll(array, values) {\n return (array && array.length && values && values.length)\n ? basePullAll(array, values)\n : array;\n }\n\n /**\n * This method is like `_.pullAll` except that it accepts `iteratee` which is\n * invoked for each element of `array` and `values` to generate the criterion\n * by which they're compared. The iteratee is invoked with one argument: (value).\n *\n * **Note:** Unlike `_.differenceBy`, this method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {Array} values The values to remove.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = [{ 'x': 1 }, { 'x': 2 }, { 'x': 3 }, { 'x': 1 }];\n *\n * _.pullAllBy(array, [{ 'x': 1 }, { 'x': 3 }], 'x');\n * console.log(array);\n * // => [{ 'x': 2 }]\n */\n function pullAllBy(array, values, iteratee) {\n return (array && array.length && values && values.length)\n ? basePullAll(array, values, getIteratee(iteratee, 2))\n : array;\n }\n\n /**\n * This method is like `_.pullAll` except that it accepts `comparator` which\n * is invoked to compare elements of `array` to `values`. The comparator is\n * invoked with two arguments: (arrVal, othVal).\n *\n * **Note:** Unlike `_.differenceWith`, this method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 4.6.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {Array} values The values to remove.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = [{ 'x': 1, 'y': 2 }, { 'x': 3, 'y': 4 }, { 'x': 5, 'y': 6 }];\n *\n * _.pullAllWith(array, [{ 'x': 3, 'y': 4 }], _.isEqual);\n * console.log(array);\n * // => [{ 'x': 1, 'y': 2 }, { 'x': 5, 'y': 6 }]\n */\n function pullAllWith(array, values, comparator) {\n return (array && array.length && values && values.length)\n ? basePullAll(array, values, undefined, comparator)\n : array;\n }\n\n /**\n * Removes elements from `array` corresponding to `indexes` and returns an\n * array of removed elements.\n *\n * **Note:** Unlike `_.at`, this method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {...(number|number[])} [indexes] The indexes of elements to remove.\n * @returns {Array} Returns the new array of removed elements.\n * @example\n *\n * var array = ['a', 'b', 'c', 'd'];\n * var pulled = _.pullAt(array, [1, 3]);\n *\n * console.log(array);\n * // => ['a', 'c']\n *\n * console.log(pulled);\n * // => ['b', 'd']\n */\n var pullAt = flatRest(function(array, indexes) {\n var length = array == null ? 0 : array.length,\n result = baseAt(array, indexes);\n\n basePullAt(array, arrayMap(indexes, function(index) {\n return isIndex(index, length) ? +index : index;\n }).sort(compareAscending));\n\n return result;\n });\n\n /**\n * Removes all elements from `array` that `predicate` returns truthy for\n * and returns an array of the removed elements. The predicate is invoked\n * with three arguments: (value, index, array).\n *\n * **Note:** Unlike `_.filter`, this method mutates `array`. Use `_.pull`\n * to pull elements from an array by value.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the new array of removed elements.\n * @example\n *\n * var array = [1, 2, 3, 4];\n * var evens = _.remove(array, function(n) {\n * return n % 2 == 0;\n * });\n *\n * console.log(array);\n * // => [1, 3]\n *\n * console.log(evens);\n * // => [2, 4]\n */\n function remove(array, predicate) {\n var result = [];\n if (!(array && array.length)) {\n return result;\n }\n var index = -1,\n indexes = [],\n length = array.length;\n\n predicate = getIteratee(predicate, 3);\n while (++index < length) {\n var value = array[index];\n if (predicate(value, index, array)) {\n result.push(value);\n indexes.push(index);\n }\n }\n basePullAt(array, indexes);\n return result;\n }\n\n /**\n * Reverses `array` so that the first element becomes the last, the second\n * element becomes the second to last, and so on.\n *\n * **Note:** This method mutates `array` and is based on\n * [`Array#reverse`](https://mdn.io/Array/reverse).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = [1, 2, 3];\n *\n * _.reverse(array);\n * // => [3, 2, 1]\n *\n * console.log(array);\n * // => [3, 2, 1]\n */\n function reverse(array) {\n return array == null ? array : nativeReverse.call(array);\n }\n\n /**\n * Creates a slice of `array` from `start` up to, but not including, `end`.\n *\n * **Note:** This method is used instead of\n * [`Array#slice`](https://mdn.io/Array/slice) to ensure dense arrays are\n * returned.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to slice.\n * @param {number} [start=0] The start position.\n * @param {number} [end=array.length] The end position.\n * @returns {Array} Returns the slice of `array`.\n */\n function slice(array, start, end) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return [];\n }\n if (end && typeof end != 'number' && isIterateeCall(array, start, end)) {\n start = 0;\n end = length;\n }\n else {\n start = start == null ? 0 : toInteger(start);\n end = end === undefined ? length : toInteger(end);\n }\n return baseSlice(array, start, end);\n }\n\n /**\n * Uses a binary search to determine the lowest index at which `value`\n * should be inserted into `array` in order to maintain its sort order.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @returns {number} Returns the index at which `value` should be inserted\n * into `array`.\n * @example\n *\n * _.sortedIndex([30, 50], 40);\n * // => 1\n */\n function sortedIndex(array, value) {\n return baseSortedIndex(array, value);\n }\n\n /**\n * This method is like `_.sortedIndex` except that it accepts `iteratee`\n * which is invoked for `value` and each element of `array` to compute their\n * sort ranking. The iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {number} Returns the index at which `value` should be inserted\n * into `array`.\n * @example\n *\n * var objects = [{ 'x': 4 }, { 'x': 5 }];\n *\n * _.sortedIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });\n * // => 0\n *\n * // The `_.property` iteratee shorthand.\n * _.sortedIndexBy(objects, { 'x': 4 }, 'x');\n * // => 0\n */\n function sortedIndexBy(array, value, iteratee) {\n return baseSortedIndexBy(array, value, getIteratee(iteratee, 2));\n }\n\n /**\n * This method is like `_.indexOf` except that it performs a binary\n * search on a sorted `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @returns {number} Returns the index of the matched value, else `-1`.\n * @example\n *\n * _.sortedIndexOf([4, 5, 5, 5, 6], 5);\n * // => 1\n */\n function sortedIndexOf(array, value) {\n var length = array == null ? 0 : array.length;\n if (length) {\n var index = baseSortedIndex(array, value);\n if (index < length && eq(array[index], value)) {\n return index;\n }\n }\n return -1;\n }\n\n /**\n * This method is like `_.sortedIndex` except that it returns the highest\n * index at which `value` should be inserted into `array` in order to\n * maintain its sort order.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @returns {number} Returns the index at which `value` should be inserted\n * into `array`.\n * @example\n *\n * _.sortedLastIndex([4, 5, 5, 5, 6], 5);\n * // => 4\n */\n function sortedLastIndex(array, value) {\n return baseSortedIndex(array, value, true);\n }\n\n /**\n * This method is like `_.sortedLastIndex` except that it accepts `iteratee`\n * which is invoked for `value` and each element of `array` to compute their\n * sort ranking. The iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {number} Returns the index at which `value` should be inserted\n * into `array`.\n * @example\n *\n * var objects = [{ 'x': 4 }, { 'x': 5 }];\n *\n * _.sortedLastIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });\n * // => 1\n *\n * // The `_.property` iteratee shorthand.\n * _.sortedLastIndexBy(objects, { 'x': 4 }, 'x');\n * // => 1\n */\n function sortedLastIndexBy(array, value, iteratee) {\n return baseSortedIndexBy(array, value, getIteratee(iteratee, 2), true);\n }\n\n /**\n * This method is like `_.lastIndexOf` except that it performs a binary\n * search on a sorted `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @returns {number} Returns the index of the matched value, else `-1`.\n * @example\n *\n * _.sortedLastIndexOf([4, 5, 5, 5, 6], 5);\n * // => 3\n */\n function sortedLastIndexOf(array, value) {\n var length = array == null ? 0 : array.length;\n if (length) {\n var index = baseSortedIndex(array, value, true) - 1;\n if (eq(array[index], value)) {\n return index;\n }\n }\n return -1;\n }\n\n /**\n * This method is like `_.uniq` except that it's designed and optimized\n * for sorted arrays.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * _.sortedUniq([1, 1, 2]);\n * // => [1, 2]\n */\n function sortedUniq(array) {\n return (array && array.length)\n ? baseSortedUniq(array)\n : [];\n }\n\n /**\n * This method is like `_.uniqBy` except that it's designed and optimized\n * for sorted arrays.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * _.sortedUniqBy([1.1, 1.2, 2.3, 2.4], Math.floor);\n * // => [1.1, 2.3]\n */\n function sortedUniqBy(array, iteratee) {\n return (array && array.length)\n ? baseSortedUniq(array, getIteratee(iteratee, 2))\n : [];\n }\n\n /**\n * Gets all but the first element of `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.tail([1, 2, 3]);\n * // => [2, 3]\n */\n function tail(array) {\n var length = array == null ? 0 : array.length;\n return length ? baseSlice(array, 1, length) : [];\n }\n\n /**\n * Creates a slice of `array` with `n` elements taken from the beginning.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=1] The number of elements to take.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.take([1, 2, 3]);\n * // => [1]\n *\n * _.take([1, 2, 3], 2);\n * // => [1, 2]\n *\n * _.take([1, 2, 3], 5);\n * // => [1, 2, 3]\n *\n * _.take([1, 2, 3], 0);\n * // => []\n */\n function take(array, n, guard) {\n if (!(array && array.length)) {\n return [];\n }\n n = (guard || n === undefined) ? 1 : toInteger(n);\n return baseSlice(array, 0, n < 0 ? 0 : n);\n }\n\n /**\n * Creates a slice of `array` with `n` elements taken from the end.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=1] The number of elements to take.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.takeRight([1, 2, 3]);\n * // => [3]\n *\n * _.takeRight([1, 2, 3], 2);\n * // => [2, 3]\n *\n * _.takeRight([1, 2, 3], 5);\n * // => [1, 2, 3]\n *\n * _.takeRight([1, 2, 3], 0);\n * // => []\n */\n function takeRight(array, n, guard) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return [];\n }\n n = (guard || n === undefined) ? 1 : toInteger(n);\n n = length - n;\n return baseSlice(array, n < 0 ? 0 : n, length);\n }\n\n /**\n * Creates a slice of `array` with elements taken from the end. Elements are\n * taken until `predicate` returns falsey. The predicate is invoked with\n * three arguments: (value, index, array).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'active': true },\n * { 'user': 'fred', 'active': false },\n * { 'user': 'pebbles', 'active': false }\n * ];\n *\n * _.takeRightWhile(users, function(o) { return !o.active; });\n * // => objects for ['fred', 'pebbles']\n *\n * // The `_.matches` iteratee shorthand.\n * _.takeRightWhile(users, { 'user': 'pebbles', 'active': false });\n * // => objects for ['pebbles']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.takeRightWhile(users, ['active', false]);\n * // => objects for ['fred', 'pebbles']\n *\n * // The `_.property` iteratee shorthand.\n * _.takeRightWhile(users, 'active');\n * // => []\n */\n function takeRightWhile(array, predicate) {\n return (array && array.length)\n ? baseWhile(array, getIteratee(predicate, 3), false, true)\n : [];\n }\n\n /**\n * Creates a slice of `array` with elements taken from the beginning. Elements\n * are taken until `predicate` returns falsey. The predicate is invoked with\n * three arguments: (value, index, array).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'active': false },\n * { 'user': 'fred', 'active': false },\n * { 'user': 'pebbles', 'active': true }\n * ];\n *\n * _.takeWhile(users, function(o) { return !o.active; });\n * // => objects for ['barney', 'fred']\n *\n * // The `_.matches` iteratee shorthand.\n * _.takeWhile(users, { 'user': 'barney', 'active': false });\n * // => objects for ['barney']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.takeWhile(users, ['active', false]);\n * // => objects for ['barney', 'fred']\n *\n * // The `_.property` iteratee shorthand.\n * _.takeWhile(users, 'active');\n * // => []\n */\n function takeWhile(array, predicate) {\n return (array && array.length)\n ? baseWhile(array, getIteratee(predicate, 3))\n : [];\n }\n\n /**\n * Creates an array of unique values, in order, from all given arrays using\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @returns {Array} Returns the new array of combined values.\n * @example\n *\n * _.union([2], [1, 2]);\n * // => [2, 1]\n */\n var union = baseRest(function(arrays) {\n return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true));\n });\n\n /**\n * This method is like `_.union` except that it accepts `iteratee` which is\n * invoked for each element of each `arrays` to generate the criterion by\n * which uniqueness is computed. Result values are chosen from the first\n * array in which the value occurs. The iteratee is invoked with one argument:\n * (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {Array} Returns the new array of combined values.\n * @example\n *\n * _.unionBy([2.1], [1.2, 2.3], Math.floor);\n * // => [2.1, 1.2]\n *\n * // The `_.property` iteratee shorthand.\n * _.unionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');\n * // => [{ 'x': 1 }, { 'x': 2 }]\n */\n var unionBy = baseRest(function(arrays) {\n var iteratee = last(arrays);\n if (isArrayLikeObject(iteratee)) {\n iteratee = undefined;\n }\n return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), getIteratee(iteratee, 2));\n });\n\n /**\n * This method is like `_.union` except that it accepts `comparator` which\n * is invoked to compare elements of `arrays`. Result values are chosen from\n * the first array in which the value occurs. The comparator is invoked\n * with two arguments: (arrVal, othVal).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of combined values.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];\n *\n * _.unionWith(objects, others, _.isEqual);\n * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]\n */\n var unionWith = baseRest(function(arrays) {\n var comparator = last(arrays);\n comparator = typeof comparator == 'function' ? comparator : undefined;\n return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), undefined, comparator);\n });\n\n /**\n * Creates a duplicate-free version of an array, using\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons, in which only the first occurrence of each element\n * is kept. The order of result values is determined by the order they occur\n * in the array.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * _.uniq([2, 1, 2]);\n * // => [2, 1]\n */\n function uniq(array) {\n return (array && array.length) ? baseUniq(array) : [];\n }\n\n /**\n * This method is like `_.uniq` except that it accepts `iteratee` which is\n * invoked for each element in `array` to generate the criterion by which\n * uniqueness is computed. The order of result values is determined by the\n * order they occur in the array. The iteratee is invoked with one argument:\n * (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * _.uniqBy([2.1, 1.2, 2.3], Math.floor);\n * // => [2.1, 1.2]\n *\n * // The `_.property` iteratee shorthand.\n * _.uniqBy([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x');\n * // => [{ 'x': 1 }, { 'x': 2 }]\n */\n function uniqBy(array, iteratee) {\n return (array && array.length) ? baseUniq(array, getIteratee(iteratee, 2)) : [];\n }\n\n /**\n * This method is like `_.uniq` except that it accepts `comparator` which\n * is invoked to compare elements of `array`. The order of result values is\n * determined by the order they occur in the array.The comparator is invoked\n * with two arguments: (arrVal, othVal).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 2 }];\n *\n * _.uniqWith(objects, _.isEqual);\n * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]\n */\n function uniqWith(array, comparator) {\n comparator = typeof comparator == 'function' ? comparator : undefined;\n return (array && array.length) ? baseUniq(array, undefined, comparator) : [];\n }\n\n /**\n * This method is like `_.zip` except that it accepts an array of grouped\n * elements and creates an array regrouping the elements to their pre-zip\n * configuration.\n *\n * @static\n * @memberOf _\n * @since 1.2.0\n * @category Array\n * @param {Array} array The array of grouped elements to process.\n * @returns {Array} Returns the new array of regrouped elements.\n * @example\n *\n * var zipped = _.zip(['a', 'b'], [1, 2], [true, false]);\n * // => [['a', 1, true], ['b', 2, false]]\n *\n * _.unzip(zipped);\n * // => [['a', 'b'], [1, 2], [true, false]]\n */\n function unzip(array) {\n if (!(array && array.length)) {\n return [];\n }\n var length = 0;\n array = arrayFilter(array, function(group) {\n if (isArrayLikeObject(group)) {\n length = nativeMax(group.length, length);\n return true;\n }\n });\n return baseTimes(length, function(index) {\n return arrayMap(array, baseProperty(index));\n });\n }\n\n /**\n * This method is like `_.unzip` except that it accepts `iteratee` to specify\n * how regrouped values should be combined. The iteratee is invoked with the\n * elements of each group: (...group).\n *\n * @static\n * @memberOf _\n * @since 3.8.0\n * @category Array\n * @param {Array} array The array of grouped elements to process.\n * @param {Function} [iteratee=_.identity] The function to combine\n * regrouped values.\n * @returns {Array} Returns the new array of regrouped elements.\n * @example\n *\n * var zipped = _.zip([1, 2], [10, 20], [100, 200]);\n * // => [[1, 10, 100], [2, 20, 200]]\n *\n * _.unzipWith(zipped, _.add);\n * // => [3, 30, 300]\n */\n function unzipWith(array, iteratee) {\n if (!(array && array.length)) {\n return [];\n }\n var result = unzip(array);\n if (iteratee == null) {\n return result;\n }\n return arrayMap(result, function(group) {\n return apply(iteratee, undefined, group);\n });\n }\n\n /**\n * Creates an array excluding all given values using\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons.\n *\n * **Note:** Unlike `_.pull`, this method returns a new array.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {...*} [values] The values to exclude.\n * @returns {Array} Returns the new array of filtered values.\n * @see _.difference, _.xor\n * @example\n *\n * _.without([2, 1, 2, 3], 1, 2);\n * // => [3]\n */\n var without = baseRest(function(array, values) {\n return isArrayLikeObject(array)\n ? baseDifference(array, values)\n : [];\n });\n\n /**\n * Creates an array of unique values that is the\n * [symmetric difference](https://en.wikipedia.org/wiki/Symmetric_difference)\n * of the given arrays. The order of result values is determined by the order\n * they occur in the arrays.\n *\n * @static\n * @memberOf _\n * @since 2.4.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @returns {Array} Returns the new array of filtered values.\n * @see _.difference, _.without\n * @example\n *\n * _.xor([2, 1], [2, 3]);\n * // => [1, 3]\n */\n var xor = baseRest(function(arrays) {\n return baseXor(arrayFilter(arrays, isArrayLikeObject));\n });\n\n /**\n * This method is like `_.xor` except that it accepts `iteratee` which is\n * invoked for each element of each `arrays` to generate the criterion by\n * which by which they're compared. The order of result values is determined\n * by the order they occur in the arrays. The iteratee is invoked with one\n * argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * _.xorBy([2.1, 1.2], [2.3, 3.4], Math.floor);\n * // => [1.2, 3.4]\n *\n * // The `_.property` iteratee shorthand.\n * _.xorBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');\n * // => [{ 'x': 2 }]\n */\n var xorBy = baseRest(function(arrays) {\n var iteratee = last(arrays);\n if (isArrayLikeObject(iteratee)) {\n iteratee = undefined;\n }\n return baseXor(arrayFilter(arrays, isArrayLikeObject), getIteratee(iteratee, 2));\n });\n\n /**\n * This method is like `_.xor` except that it accepts `comparator` which is\n * invoked to compare elements of `arrays`. The order of result values is\n * determined by the order they occur in the arrays. The comparator is invoked\n * with two arguments: (arrVal, othVal).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];\n *\n * _.xorWith(objects, others, _.isEqual);\n * // => [{ 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]\n */\n var xorWith = baseRest(function(arrays) {\n var comparator = last(arrays);\n comparator = typeof comparator == 'function' ? comparator : undefined;\n return baseXor(arrayFilter(arrays, isArrayLikeObject), undefined, comparator);\n });\n\n /**\n * Creates an array of grouped elements, the first of which contains the\n * first elements of the given arrays, the second of which contains the\n * second elements of the given arrays, and so on.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {...Array} [arrays] The arrays to process.\n * @returns {Array} Returns the new array of grouped elements.\n * @example\n *\n * _.zip(['a', 'b'], [1, 2], [true, false]);\n * // => [['a', 1, true], ['b', 2, false]]\n */\n var zip = baseRest(unzip);\n\n /**\n * This method is like `_.fromPairs` except that it accepts two arrays,\n * one of property identifiers and one of corresponding values.\n *\n * @static\n * @memberOf _\n * @since 0.4.0\n * @category Array\n * @param {Array} [props=[]] The property identifiers.\n * @param {Array} [values=[]] The property values.\n * @returns {Object} Returns the new object.\n * @example\n *\n * _.zipObject(['a', 'b'], [1, 2]);\n * // => { 'a': 1, 'b': 2 }\n */\n function zipObject(props, values) {\n return baseZipObject(props || [], values || [], assignValue);\n }\n\n /**\n * This method is like `_.zipObject` except that it supports property paths.\n *\n * @static\n * @memberOf _\n * @since 4.1.0\n * @category Array\n * @param {Array} [props=[]] The property identifiers.\n * @param {Array} [values=[]] The property values.\n * @returns {Object} Returns the new object.\n * @example\n *\n * _.zipObjectDeep(['a.b[0].c', 'a.b[1].d'], [1, 2]);\n * // => { 'a': { 'b': [{ 'c': 1 }, { 'd': 2 }] } }\n */\n function zipObjectDeep(props, values) {\n return baseZipObject(props || [], values || [], baseSet);\n }\n\n /**\n * This method is like `_.zip` except that it accepts `iteratee` to specify\n * how grouped values should be combined. The iteratee is invoked with the\n * elements of each group: (...group).\n *\n * @static\n * @memberOf _\n * @since 3.8.0\n * @category Array\n * @param {...Array} [arrays] The arrays to process.\n * @param {Function} [iteratee=_.identity] The function to combine\n * grouped values.\n * @returns {Array} Returns the new array of grouped elements.\n * @example\n *\n * _.zipWith([1, 2], [10, 20], [100, 200], function(a, b, c) {\n * return a + b + c;\n * });\n * // => [111, 222]\n */\n var zipWith = baseRest(function(arrays) {\n var length = arrays.length,\n iteratee = length > 1 ? arrays[length - 1] : undefined;\n\n iteratee = typeof iteratee == 'function' ? (arrays.pop(), iteratee) : undefined;\n return unzipWith(arrays, iteratee);\n });\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates a `lodash` wrapper instance that wraps `value` with explicit method\n * chain sequences enabled. The result of such sequences must be unwrapped\n * with `_#value`.\n *\n * @static\n * @memberOf _\n * @since 1.3.0\n * @category Seq\n * @param {*} value The value to wrap.\n * @returns {Object} Returns the new `lodash` wrapper instance.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'age': 36 },\n * { 'user': 'fred', 'age': 40 },\n * { 'user': 'pebbles', 'age': 1 }\n * ];\n *\n * var youngest = _\n * .chain(users)\n * .sortBy('age')\n * .map(function(o) {\n * return o.user + ' is ' + o.age;\n * })\n * .head()\n * .value();\n * // => 'pebbles is 1'\n */\n function chain(value) {\n var result = lodash(value);\n result.__chain__ = true;\n return result;\n }\n\n /**\n * This method invokes `interceptor` and returns `value`. The interceptor\n * is invoked with one argument; (value). The purpose of this method is to\n * \"tap into\" a method chain sequence in order to modify intermediate results.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Seq\n * @param {*} value The value to provide to `interceptor`.\n * @param {Function} interceptor The function to invoke.\n * @returns {*} Returns `value`.\n * @example\n *\n * _([1, 2, 3])\n * .tap(function(array) {\n * // Mutate input array.\n * array.pop();\n * })\n * .reverse()\n * .value();\n * // => [2, 1]\n */\n function tap(value, interceptor) {\n interceptor(value);\n return value;\n }\n\n /**\n * This method is like `_.tap` except that it returns the result of `interceptor`.\n * The purpose of this method is to \"pass thru\" values replacing intermediate\n * results in a method chain sequence.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Seq\n * @param {*} value The value to provide to `interceptor`.\n * @param {Function} interceptor The function to invoke.\n * @returns {*} Returns the result of `interceptor`.\n * @example\n *\n * _(' abc ')\n * .chain()\n * .trim()\n * .thru(function(value) {\n * return [value];\n * })\n * .value();\n * // => ['abc']\n */\n function thru(value, interceptor) {\n return interceptor(value);\n }\n\n /**\n * This method is the wrapper version of `_.at`.\n *\n * @name at\n * @memberOf _\n * @since 1.0.0\n * @category Seq\n * @param {...(string|string[])} [paths] The property paths to pick.\n * @returns {Object} Returns the new `lodash` wrapper instance.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };\n *\n * _(object).at(['a[0].b.c', 'a[1]']).value();\n * // => [3, 4]\n */\n var wrapperAt = flatRest(function(paths) {\n var length = paths.length,\n start = length ? paths[0] : 0,\n value = this.__wrapped__,\n interceptor = function(object) { return baseAt(object, paths); };\n\n if (length > 1 || this.__actions__.length ||\n !(value instanceof LazyWrapper) || !isIndex(start)) {\n return this.thru(interceptor);\n }\n value = value.slice(start, +start + (length ? 1 : 0));\n value.__actions__.push({\n 'func': thru,\n 'args': [interceptor],\n 'thisArg': undefined\n });\n return new LodashWrapper(value, this.__chain__).thru(function(array) {\n if (length && !array.length) {\n array.push(undefined);\n }\n return array;\n });\n });\n\n /**\n * Creates a `lodash` wrapper instance with explicit method chain sequences enabled.\n *\n * @name chain\n * @memberOf _\n * @since 0.1.0\n * @category Seq\n * @returns {Object} Returns the new `lodash` wrapper instance.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'age': 36 },\n * { 'user': 'fred', 'age': 40 }\n * ];\n *\n * // A sequence without explicit chaining.\n * _(users).head();\n * // => { 'user': 'barney', 'age': 36 }\n *\n * // A sequence with explicit chaining.\n * _(users)\n * .chain()\n * .head()\n * .pick('user')\n * .value();\n * // => { 'user': 'barney' }\n */\n function wrapperChain() {\n return chain(this);\n }\n\n /**\n * Executes the chain sequence and returns the wrapped result.\n *\n * @name commit\n * @memberOf _\n * @since 3.2.0\n * @category Seq\n * @returns {Object} Returns the new `lodash` wrapper instance.\n * @example\n *\n * var array = [1, 2];\n * var wrapped = _(array).push(3);\n *\n * console.log(array);\n * // => [1, 2]\n *\n * wrapped = wrapped.commit();\n * console.log(array);\n * // => [1, 2, 3]\n *\n * wrapped.last();\n * // => 3\n *\n * console.log(array);\n * // => [1, 2, 3]\n */\n function wrapperCommit() {\n return new LodashWrapper(this.value(), this.__chain__);\n }\n\n /**\n * Gets the next value on a wrapped object following the\n * [iterator protocol](https://mdn.io/iteration_protocols#iterator).\n *\n * @name next\n * @memberOf _\n * @since 4.0.0\n * @category Seq\n * @returns {Object} Returns the next iterator value.\n * @example\n *\n * var wrapped = _([1, 2]);\n *\n * wrapped.next();\n * // => { 'done': false, 'value': 1 }\n *\n * wrapped.next();\n * // => { 'done': false, 'value': 2 }\n *\n * wrapped.next();\n * // => { 'done': true, 'value': undefined }\n */\n function wrapperNext() {\n if (this.__values__ === undefined) {\n this.__values__ = toArray(this.value());\n }\n var done = this.__index__ >= this.__values__.length,\n value = done ? undefined : this.__values__[this.__index__++];\n\n return { 'done': done, 'value': value };\n }\n\n /**\n * Enables the wrapper to be iterable.\n *\n * @name Symbol.iterator\n * @memberOf _\n * @since 4.0.0\n * @category Seq\n * @returns {Object} Returns the wrapper object.\n * @example\n *\n * var wrapped = _([1, 2]);\n *\n * wrapped[Symbol.iterator]() === wrapped;\n * // => true\n *\n * Array.from(wrapped);\n * // => [1, 2]\n */\n function wrapperToIterator() {\n return this;\n }\n\n /**\n * Creates a clone of the chain sequence planting `value` as the wrapped value.\n *\n * @name plant\n * @memberOf _\n * @since 3.2.0\n * @category Seq\n * @param {*} value The value to plant.\n * @returns {Object} Returns the new `lodash` wrapper instance.\n * @example\n *\n * function square(n) {\n * return n * n;\n * }\n *\n * var wrapped = _([1, 2]).map(square);\n * var other = wrapped.plant([3, 4]);\n *\n * other.value();\n * // => [9, 16]\n *\n * wrapped.value();\n * // => [1, 4]\n */\n function wrapperPlant(value) {\n var result,\n parent = this;\n\n while (parent instanceof baseLodash) {\n var clone = wrapperClone(parent);\n clone.__index__ = 0;\n clone.__values__ = undefined;\n if (result) {\n previous.__wrapped__ = clone;\n } else {\n result = clone;\n }\n var previous = clone;\n parent = parent.__wrapped__;\n }\n previous.__wrapped__ = value;\n return result;\n }\n\n /**\n * This method is the wrapper version of `_.reverse`.\n *\n * **Note:** This method mutates the wrapped array.\n *\n * @name reverse\n * @memberOf _\n * @since 0.1.0\n * @category Seq\n * @returns {Object} Returns the new `lodash` wrapper instance.\n * @example\n *\n * var array = [1, 2, 3];\n *\n * _(array).reverse().value()\n * // => [3, 2, 1]\n *\n * console.log(array);\n * // => [3, 2, 1]\n */\n function wrapperReverse() {\n var value = this.__wrapped__;\n if (value instanceof LazyWrapper) {\n var wrapped = value;\n if (this.__actions__.length) {\n wrapped = new LazyWrapper(this);\n }\n wrapped = wrapped.reverse();\n wrapped.__actions__.push({\n 'func': thru,\n 'args': [reverse],\n 'thisArg': undefined\n });\n return new LodashWrapper(wrapped, this.__chain__);\n }\n return this.thru(reverse);\n }\n\n /**\n * Executes the chain sequence to resolve the unwrapped value.\n *\n * @name value\n * @memberOf _\n * @since 0.1.0\n * @alias toJSON, valueOf\n * @category Seq\n * @returns {*} Returns the resolved unwrapped value.\n * @example\n *\n * _([1, 2, 3]).value();\n * // => [1, 2, 3]\n */\n function wrapperValue() {\n return baseWrapperValue(this.__wrapped__, this.__actions__);\n }\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates an object composed of keys generated from the results of running\n * each element of `collection` thru `iteratee`. The corresponding value of\n * each key is the number of times the key was returned by `iteratee`. The\n * iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 0.5.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The iteratee to transform keys.\n * @returns {Object} Returns the composed aggregate object.\n * @example\n *\n * _.countBy([6.1, 4.2, 6.3], Math.floor);\n * // => { '4': 1, '6': 2 }\n *\n * // The `_.property` iteratee shorthand.\n * _.countBy(['one', 'two', 'three'], 'length');\n * // => { '3': 2, '5': 1 }\n */\n var countBy = createAggregator(function(result, value, key) {\n if (hasOwnProperty.call(result, key)) {\n ++result[key];\n } else {\n baseAssignValue(result, key, 1);\n }\n });\n\n /**\n * Checks if `predicate` returns truthy for **all** elements of `collection`.\n * Iteration is stopped once `predicate` returns falsey. The predicate is\n * invoked with three arguments: (value, index|key, collection).\n *\n * **Note:** This method returns `true` for\n * [empty collections](https://en.wikipedia.org/wiki/Empty_set) because\n * [everything is true](https://en.wikipedia.org/wiki/Vacuous_truth) of\n * elements of empty collections.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {boolean} Returns `true` if all elements pass the predicate check,\n * else `false`.\n * @example\n *\n * _.every([true, 1, null, 'yes'], Boolean);\n * // => false\n *\n * var users = [\n * { 'user': 'barney', 'age': 36, 'active': false },\n * { 'user': 'fred', 'age': 40, 'active': false }\n * ];\n *\n * // The `_.matches` iteratee shorthand.\n * _.every(users, { 'user': 'barney', 'active': false });\n * // => false\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.every(users, ['active', false]);\n * // => true\n *\n * // The `_.property` iteratee shorthand.\n * _.every(users, 'active');\n * // => false\n */\n function every(collection, predicate, guard) {\n var func = isArray(collection) ? arrayEvery : baseEvery;\n if (guard && isIterateeCall(collection, predicate, guard)) {\n predicate = undefined;\n }\n return func(collection, getIteratee(predicate, 3));\n }\n\n /**\n * Iterates over elements of `collection`, returning an array of all elements\n * `predicate` returns truthy for. The predicate is invoked with three\n * arguments: (value, index|key, collection).\n *\n * **Note:** Unlike `_.remove`, this method returns a new array.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the new filtered array.\n * @see _.reject\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'age': 36, 'active': true },\n * { 'user': 'fred', 'age': 40, 'active': false }\n * ];\n *\n * _.filter(users, function(o) { return !o.active; });\n * // => objects for ['fred']\n *\n * // The `_.matches` iteratee shorthand.\n * _.filter(users, { 'age': 36, 'active': true });\n * // => objects for ['barney']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.filter(users, ['active', false]);\n * // => objects for ['fred']\n *\n * // The `_.property` iteratee shorthand.\n * _.filter(users, 'active');\n * // => objects for ['barney']\n *\n * // Combining several predicates using `_.overEvery` or `_.overSome`.\n * _.filter(users, _.overSome([{ 'age': 36 }, ['age', 40]]));\n * // => objects for ['fred', 'barney']\n */\n function filter(collection, predicate) {\n var func = isArray(collection) ? arrayFilter : baseFilter;\n return func(collection, getIteratee(predicate, 3));\n }\n\n /**\n * Iterates over elements of `collection`, returning the first element\n * `predicate` returns truthy for. The predicate is invoked with three\n * arguments: (value, index|key, collection).\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to inspect.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @param {number} [fromIndex=0] The index to search from.\n * @returns {*} Returns the matched element, else `undefined`.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'age': 36, 'active': true },\n * { 'user': 'fred', 'age': 40, 'active': false },\n * { 'user': 'pebbles', 'age': 1, 'active': true }\n * ];\n *\n * _.find(users, function(o) { return o.age < 40; });\n * // => object for 'barney'\n *\n * // The `_.matches` iteratee shorthand.\n * _.find(users, { 'age': 1, 'active': true });\n * // => object for 'pebbles'\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.find(users, ['active', false]);\n * // => object for 'fred'\n *\n * // The `_.property` iteratee shorthand.\n * _.find(users, 'active');\n * // => object for 'barney'\n */\n var find = createFind(findIndex);\n\n /**\n * This method is like `_.find` except that it iterates over elements of\n * `collection` from right to left.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to inspect.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @param {number} [fromIndex=collection.length-1] The index to search from.\n * @returns {*} Returns the matched element, else `undefined`.\n * @example\n *\n * _.findLast([1, 2, 3, 4], function(n) {\n * return n % 2 == 1;\n * });\n * // => 3\n */\n var findLast = createFind(findLastIndex);\n\n /**\n * Creates a flattened array of values by running each element in `collection`\n * thru `iteratee` and flattening the mapped results. The iteratee is invoked\n * with three arguments: (value, index|key, collection).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the new flattened array.\n * @example\n *\n * function duplicate(n) {\n * return [n, n];\n * }\n *\n * _.flatMap([1, 2], duplicate);\n * // => [1, 1, 2, 2]\n */\n function flatMap(collection, iteratee) {\n return baseFlatten(map(collection, iteratee), 1);\n }\n\n /**\n * This method is like `_.flatMap` except that it recursively flattens the\n * mapped results.\n *\n * @static\n * @memberOf _\n * @since 4.7.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the new flattened array.\n * @example\n *\n * function duplicate(n) {\n * return [[[n, n]]];\n * }\n *\n * _.flatMapDeep([1, 2], duplicate);\n * // => [1, 1, 2, 2]\n */\n function flatMapDeep(collection, iteratee) {\n return baseFlatten(map(collection, iteratee), INFINITY);\n }\n\n /**\n * This method is like `_.flatMap` except that it recursively flattens the\n * mapped results up to `depth` times.\n *\n * @static\n * @memberOf _\n * @since 4.7.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @param {number} [depth=1] The maximum recursion depth.\n * @returns {Array} Returns the new flattened array.\n * @example\n *\n * function duplicate(n) {\n * return [[[n, n]]];\n * }\n *\n * _.flatMapDepth([1, 2], duplicate, 2);\n * // => [[1, 1], [2, 2]]\n */\n function flatMapDepth(collection, iteratee, depth) {\n depth = depth === undefined ? 1 : toInteger(depth);\n return baseFlatten(map(collection, iteratee), depth);\n }\n\n /**\n * Iterates over elements of `collection` and invokes `iteratee` for each element.\n * The iteratee is invoked with three arguments: (value, index|key, collection).\n * Iteratee functions may exit iteration early by explicitly returning `false`.\n *\n * **Note:** As with other \"Collections\" methods, objects with a \"length\"\n * property are iterated like arrays. To avoid this behavior use `_.forIn`\n * or `_.forOwn` for object iteration.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @alias each\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Array|Object} Returns `collection`.\n * @see _.forEachRight\n * @example\n *\n * _.forEach([1, 2], function(value) {\n * console.log(value);\n * });\n * // => Logs `1` then `2`.\n *\n * _.forEach({ 'a': 1, 'b': 2 }, function(value, key) {\n * console.log(key);\n * });\n * // => Logs 'a' then 'b' (iteration order is not guaranteed).\n */\n function forEach(collection, iteratee) {\n var func = isArray(collection) ? arrayEach : baseEach;\n return func(collection, getIteratee(iteratee, 3));\n }\n\n /**\n * This method is like `_.forEach` except that it iterates over elements of\n * `collection` from right to left.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @alias eachRight\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Array|Object} Returns `collection`.\n * @see _.forEach\n * @example\n *\n * _.forEachRight([1, 2], function(value) {\n * console.log(value);\n * });\n * // => Logs `2` then `1`.\n */\n function forEachRight(collection, iteratee) {\n var func = isArray(collection) ? arrayEachRight : baseEachRight;\n return func(collection, getIteratee(iteratee, 3));\n }\n\n /**\n * Creates an object composed of keys generated from the results of running\n * each element of `collection` thru `iteratee`. The order of grouped values\n * is determined by the order they occur in `collection`. The corresponding\n * value of each key is an array of elements responsible for generating the\n * key. The iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The iteratee to transform keys.\n * @returns {Object} Returns the composed aggregate object.\n * @example\n *\n * _.groupBy([6.1, 4.2, 6.3], Math.floor);\n * // => { '4': [4.2], '6': [6.1, 6.3] }\n *\n * // The `_.property` iteratee shorthand.\n * _.groupBy(['one', 'two', 'three'], 'length');\n * // => { '3': ['one', 'two'], '5': ['three'] }\n */\n var groupBy = createAggregator(function(result, value, key) {\n if (hasOwnProperty.call(result, key)) {\n result[key].push(value);\n } else {\n baseAssignValue(result, key, [value]);\n }\n });\n\n /**\n * Checks if `value` is in `collection`. If `collection` is a string, it's\n * checked for a substring of `value`, otherwise\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * is used for equality comparisons. If `fromIndex` is negative, it's used as\n * the offset from the end of `collection`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object|string} collection The collection to inspect.\n * @param {*} value The value to search for.\n * @param {number} [fromIndex=0] The index to search from.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.\n * @returns {boolean} Returns `true` if `value` is found, else `false`.\n * @example\n *\n * _.includes([1, 2, 3], 1);\n * // => true\n *\n * _.includes([1, 2, 3], 1, 2);\n * // => false\n *\n * _.includes({ 'a': 1, 'b': 2 }, 1);\n * // => true\n *\n * _.includes('abcd', 'bc');\n * // => true\n */\n function includes(collection, value, fromIndex, guard) {\n collection = isArrayLike(collection) ? collection : values(collection);\n fromIndex = (fromIndex && !guard) ? toInteger(fromIndex) : 0;\n\n var length = collection.length;\n if (fromIndex < 0) {\n fromIndex = nativeMax(length + fromIndex, 0);\n }\n return isString(collection)\n ? (fromIndex <= length && collection.indexOf(value, fromIndex) > -1)\n : (!!length && baseIndexOf(collection, value, fromIndex) > -1);\n }\n\n /**\n * Invokes the method at `path` of each element in `collection`, returning\n * an array of the results of each invoked method. Any additional arguments\n * are provided to each invoked method. If `path` is a function, it's invoked\n * for, and `this` bound to, each element in `collection`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Array|Function|string} path The path of the method to invoke or\n * the function invoked per iteration.\n * @param {...*} [args] The arguments to invoke each method with.\n * @returns {Array} Returns the array of results.\n * @example\n *\n * _.invokeMap([[5, 1, 7], [3, 2, 1]], 'sort');\n * // => [[1, 5, 7], [1, 2, 3]]\n *\n * _.invokeMap([123, 456], String.prototype.split, '');\n * // => [['1', '2', '3'], ['4', '5', '6']]\n */\n var invokeMap = baseRest(function(collection, path, args) {\n var index = -1,\n isFunc = typeof path == 'function',\n result = isArrayLike(collection) ? Array(collection.length) : [];\n\n baseEach(collection, function(value) {\n result[++index] = isFunc ? apply(path, value, args) : baseInvoke(value, path, args);\n });\n return result;\n });\n\n /**\n * Creates an object composed of keys generated from the results of running\n * each element of `collection` thru `iteratee`. The corresponding value of\n * each key is the last element responsible for generating the key. The\n * iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The iteratee to transform keys.\n * @returns {Object} Returns the composed aggregate object.\n * @example\n *\n * var array = [\n * { 'dir': 'left', 'code': 97 },\n * { 'dir': 'right', 'code': 100 }\n * ];\n *\n * _.keyBy(array, function(o) {\n * return String.fromCharCode(o.code);\n * });\n * // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } }\n *\n * _.keyBy(array, 'dir');\n * // => { 'left': { 'dir': 'left', 'code': 97 }, 'right': { 'dir': 'right', 'code': 100 } }\n */\n var keyBy = createAggregator(function(result, value, key) {\n baseAssignValue(result, key, value);\n });\n\n /**\n * Creates an array of values by running each element in `collection` thru\n * `iteratee`. The iteratee is invoked with three arguments:\n * (value, index|key, collection).\n *\n * Many lodash methods are guarded to work as iteratees for methods like\n * `_.every`, `_.filter`, `_.map`, `_.mapValues`, `_.reject`, and `_.some`.\n *\n * The guarded methods are:\n * `ary`, `chunk`, `curry`, `curryRight`, `drop`, `dropRight`, `every`,\n * `fill`, `invert`, `parseInt`, `random`, `range`, `rangeRight`, `repeat`,\n * `sampleSize`, `slice`, `some`, `sortBy`, `split`, `take`, `takeRight`,\n * `template`, `trim`, `trimEnd`, `trimStart`, and `words`\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the new mapped array.\n * @example\n *\n * function square(n) {\n * return n * n;\n * }\n *\n * _.map([4, 8], square);\n * // => [16, 64]\n *\n * _.map({ 'a': 4, 'b': 8 }, square);\n * // => [16, 64] (iteration order is not guaranteed)\n *\n * var users = [\n * { 'user': 'barney' },\n * { 'user': 'fred' }\n * ];\n *\n * // The `_.property` iteratee shorthand.\n * _.map(users, 'user');\n * // => ['barney', 'fred']\n */\n function map(collection, iteratee) {\n var func = isArray(collection) ? arrayMap : baseMap;\n return func(collection, getIteratee(iteratee, 3));\n }\n\n /**\n * This method is like `_.sortBy` except that it allows specifying the sort\n * orders of the iteratees to sort by. If `orders` is unspecified, all values\n * are sorted in ascending order. Otherwise, specify an order of \"desc\" for\n * descending or \"asc\" for ascending sort order of corresponding values.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Array[]|Function[]|Object[]|string[]} [iteratees=[_.identity]]\n * The iteratees to sort by.\n * @param {string[]} [orders] The sort orders of `iteratees`.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.\n * @returns {Array} Returns the new sorted array.\n * @example\n *\n * var users = [\n * { 'user': 'fred', 'age': 48 },\n * { 'user': 'barney', 'age': 34 },\n * { 'user': 'fred', 'age': 40 },\n * { 'user': 'barney', 'age': 36 }\n * ];\n *\n * // Sort by `user` in ascending order and by `age` in descending order.\n * _.orderBy(users, ['user', 'age'], ['asc', 'desc']);\n * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]]\n */\n function orderBy(collection, iteratees, orders, guard) {\n if (collection == null) {\n return [];\n }\n if (!isArray(iteratees)) {\n iteratees = iteratees == null ? [] : [iteratees];\n }\n orders = guard ? undefined : orders;\n if (!isArray(orders)) {\n orders = orders == null ? [] : [orders];\n }\n return baseOrderBy(collection, iteratees, orders);\n }\n\n /**\n * Creates an array of elements split into two groups, the first of which\n * contains elements `predicate` returns truthy for, the second of which\n * contains elements `predicate` returns falsey for. The predicate is\n * invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the array of grouped elements.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'age': 36, 'active': false },\n * { 'user': 'fred', 'age': 40, 'active': true },\n * { 'user': 'pebbles', 'age': 1, 'active': false }\n * ];\n *\n * _.partition(users, function(o) { return o.active; });\n * // => objects for [['fred'], ['barney', 'pebbles']]\n *\n * // The `_.matches` iteratee shorthand.\n * _.partition(users, { 'age': 1, 'active': false });\n * // => objects for [['pebbles'], ['barney', 'fred']]\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.partition(users, ['active', false]);\n * // => objects for [['barney', 'pebbles'], ['fred']]\n *\n * // The `_.property` iteratee shorthand.\n * _.partition(users, 'active');\n * // => objects for [['fred'], ['barney', 'pebbles']]\n */\n var partition = createAggregator(function(result, value, key) {\n result[key ? 0 : 1].push(value);\n }, function() { return [[], []]; });\n\n /**\n * Reduces `collection` to a value which is the accumulated result of running\n * each element in `collection` thru `iteratee`, where each successive\n * invocation is supplied the return value of the previous. If `accumulator`\n * is not given, the first element of `collection` is used as the initial\n * value. The iteratee is invoked with four arguments:\n * (accumulator, value, index|key, collection).\n *\n * Many lodash methods are guarded to work as iteratees for methods like\n * `_.reduce`, `_.reduceRight`, and `_.transform`.\n *\n * The guarded methods are:\n * `assign`, `defaults`, `defaultsDeep`, `includes`, `merge`, `orderBy`,\n * and `sortBy`\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @param {*} [accumulator] The initial value.\n * @returns {*} Returns the accumulated value.\n * @see _.reduceRight\n * @example\n *\n * _.reduce([1, 2], function(sum, n) {\n * return sum + n;\n * }, 0);\n * // => 3\n *\n * _.reduce({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {\n * (result[value] || (result[value] = [])).push(key);\n * return result;\n * }, {});\n * // => { '1': ['a', 'c'], '2': ['b'] } (iteration order is not guaranteed)\n */\n function reduce(collection, iteratee, accumulator) {\n var func = isArray(collection) ? arrayReduce : baseReduce,\n initAccum = arguments.length < 3;\n\n return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEach);\n }\n\n /**\n * This method is like `_.reduce` except that it iterates over elements of\n * `collection` from right to left.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @param {*} [accumulator] The initial value.\n * @returns {*} Returns the accumulated value.\n * @see _.reduce\n * @example\n *\n * var array = [[0, 1], [2, 3], [4, 5]];\n *\n * _.reduceRight(array, function(flattened, other) {\n * return flattened.concat(other);\n * }, []);\n * // => [4, 5, 2, 3, 0, 1]\n */\n function reduceRight(collection, iteratee, accumulator) {\n var func = isArray(collection) ? arrayReduceRight : baseReduce,\n initAccum = arguments.length < 3;\n\n return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEachRight);\n }\n\n /**\n * The opposite of `_.filter`; this method returns the elements of `collection`\n * that `predicate` does **not** return truthy for.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the new filtered array.\n * @see _.filter\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'age': 36, 'active': false },\n * { 'user': 'fred', 'age': 40, 'active': true }\n * ];\n *\n * _.reject(users, function(o) { return !o.active; });\n * // => objects for ['fred']\n *\n * // The `_.matches` iteratee shorthand.\n * _.reject(users, { 'age': 40, 'active': true });\n * // => objects for ['barney']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.reject(users, ['active', false]);\n * // => objects for ['fred']\n *\n * // The `_.property` iteratee shorthand.\n * _.reject(users, 'active');\n * // => objects for ['barney']\n */\n function reject(collection, predicate) {\n var func = isArray(collection) ? arrayFilter : baseFilter;\n return func(collection, negate(getIteratee(predicate, 3)));\n }\n\n /**\n * Gets a random element from `collection`.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to sample.\n * @returns {*} Returns the random element.\n * @example\n *\n * _.sample([1, 2, 3, 4]);\n * // => 2\n */\n function sample(collection) {\n var func = isArray(collection) ? arraySample : baseSample;\n return func(collection);\n }\n\n /**\n * Gets `n` random elements at unique keys from `collection` up to the\n * size of `collection`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to sample.\n * @param {number} [n=1] The number of elements to sample.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the random elements.\n * @example\n *\n * _.sampleSize([1, 2, 3], 2);\n * // => [3, 1]\n *\n * _.sampleSize([1, 2, 3], 4);\n * // => [2, 3, 1]\n */\n function sampleSize(collection, n, guard) {\n if ((guard ? isIterateeCall(collection, n, guard) : n === undefined)) {\n n = 1;\n } else {\n n = toInteger(n);\n }\n var func = isArray(collection) ? arraySampleSize : baseSampleSize;\n return func(collection, n);\n }\n\n /**\n * Creates an array of shuffled values, using a version of the\n * [Fisher-Yates shuffle](https://en.wikipedia.org/wiki/Fisher-Yates_shuffle).\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to shuffle.\n * @returns {Array} Returns the new shuffled array.\n * @example\n *\n * _.shuffle([1, 2, 3, 4]);\n * // => [4, 1, 3, 2]\n */\n function shuffle(collection) {\n var func = isArray(collection) ? arrayShuffle : baseShuffle;\n return func(collection);\n }\n\n /**\n * Gets the size of `collection` by returning its length for array-like\n * values or the number of own enumerable string keyed properties for objects.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object|string} collection The collection to inspect.\n * @returns {number} Returns the collection size.\n * @example\n *\n * _.size([1, 2, 3]);\n * // => 3\n *\n * _.size({ 'a': 1, 'b': 2 });\n * // => 2\n *\n * _.size('pebbles');\n * // => 7\n */\n function size(collection) {\n if (collection == null) {\n return 0;\n }\n if (isArrayLike(collection)) {\n return isString(collection) ? stringSize(collection) : collection.length;\n }\n var tag = getTag(collection);\n if (tag == mapTag || tag == setTag) {\n return collection.size;\n }\n return baseKeys(collection).length;\n }\n\n /**\n * Checks if `predicate` returns truthy for **any** element of `collection`.\n * Iteration is stopped once `predicate` returns truthy. The predicate is\n * invoked with three arguments: (value, index|key, collection).\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {boolean} Returns `true` if any element passes the predicate check,\n * else `false`.\n * @example\n *\n * _.some([null, 0, 'yes', false], Boolean);\n * // => true\n *\n * var users = [\n * { 'user': 'barney', 'active': true },\n * { 'user': 'fred', 'active': false }\n * ];\n *\n * // The `_.matches` iteratee shorthand.\n * _.some(users, { 'user': 'barney', 'active': false });\n * // => false\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.some(users, ['active', false]);\n * // => true\n *\n * // The `_.property` iteratee shorthand.\n * _.some(users, 'active');\n * // => true\n */\n function some(collection, predicate, guard) {\n var func = isArray(collection) ? arraySome : baseSome;\n if (guard && isIterateeCall(collection, predicate, guard)) {\n predicate = undefined;\n }\n return func(collection, getIteratee(predicate, 3));\n }\n\n /**\n * Creates an array of elements, sorted in ascending order by the results of\n * running each element in a collection thru each iteratee. This method\n * performs a stable sort, that is, it preserves the original sort order of\n * equal elements. The iteratees are invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {...(Function|Function[])} [iteratees=[_.identity]]\n * The iteratees to sort by.\n * @returns {Array} Returns the new sorted array.\n * @example\n *\n * var users = [\n * { 'user': 'fred', 'age': 48 },\n * { 'user': 'barney', 'age': 36 },\n * { 'user': 'fred', 'age': 30 },\n * { 'user': 'barney', 'age': 34 }\n * ];\n *\n * _.sortBy(users, [function(o) { return o.user; }]);\n * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 30]]\n *\n * _.sortBy(users, ['user', 'age']);\n * // => objects for [['barney', 34], ['barney', 36], ['fred', 30], ['fred', 48]]\n */\n var sortBy = baseRest(function(collection, iteratees) {\n if (collection == null) {\n return [];\n }\n var length = iteratees.length;\n if (length > 1 && isIterateeCall(collection, iteratees[0], iteratees[1])) {\n iteratees = [];\n } else if (length > 2 && isIterateeCall(iteratees[0], iteratees[1], iteratees[2])) {\n iteratees = [iteratees[0]];\n }\n return baseOrderBy(collection, baseFlatten(iteratees, 1), []);\n });\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Gets the timestamp of the number of milliseconds that have elapsed since\n * the Unix epoch (1 January 1970 00:00:00 UTC).\n *\n * @static\n * @memberOf _\n * @since 2.4.0\n * @category Date\n * @returns {number} Returns the timestamp.\n * @example\n *\n * _.defer(function(stamp) {\n * console.log(_.now() - stamp);\n * }, _.now());\n * // => Logs the number of milliseconds it took for the deferred invocation.\n */\n var now = ctxNow || function() {\n return root.Date.now();\n };\n\n /*------------------------------------------------------------------------*/\n\n /**\n * The opposite of `_.before`; this method creates a function that invokes\n * `func` once it's called `n` or more times.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {number} n The number of calls before `func` is invoked.\n * @param {Function} func The function to restrict.\n * @returns {Function} Returns the new restricted function.\n * @example\n *\n * var saves = ['profile', 'settings'];\n *\n * var done = _.after(saves.length, function() {\n * console.log('done saving!');\n * });\n *\n * _.forEach(saves, function(type) {\n * asyncSave({ 'type': type, 'complete': done });\n * });\n * // => Logs 'done saving!' after the two async saves have completed.\n */\n function after(n, func) {\n if (typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n n = toInteger(n);\n return function() {\n if (--n < 1) {\n return func.apply(this, arguments);\n }\n };\n }\n\n /**\n * Creates a function that invokes `func`, with up to `n` arguments,\n * ignoring any additional arguments.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Function\n * @param {Function} func The function to cap arguments for.\n * @param {number} [n=func.length] The arity cap.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Function} Returns the new capped function.\n * @example\n *\n * _.map(['6', '8', '10'], _.ary(parseInt, 1));\n * // => [6, 8, 10]\n */\n function ary(func, n, guard) {\n n = guard ? undefined : n;\n n = (func && n == null) ? func.length : n;\n return createWrap(func, WRAP_ARY_FLAG, undefined, undefined, undefined, undefined, n);\n }\n\n /**\n * Creates a function that invokes `func`, with the `this` binding and arguments\n * of the created function, while it's called less than `n` times. Subsequent\n * calls to the created function return the result of the last `func` invocation.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Function\n * @param {number} n The number of calls at which `func` is no longer invoked.\n * @param {Function} func The function to restrict.\n * @returns {Function} Returns the new restricted function.\n * @example\n *\n * jQuery(element).on('click', _.before(5, addContactToList));\n * // => Allows adding up to 4 contacts to the list.\n */\n function before(n, func) {\n var result;\n if (typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n n = toInteger(n);\n return function() {\n if (--n > 0) {\n result = func.apply(this, arguments);\n }\n if (n <= 1) {\n func = undefined;\n }\n return result;\n };\n }\n\n /**\n * Creates a function that invokes `func` with the `this` binding of `thisArg`\n * and `partials` prepended to the arguments it receives.\n *\n * The `_.bind.placeholder` value, which defaults to `_` in monolithic builds,\n * may be used as a placeholder for partially applied arguments.\n *\n * **Note:** Unlike native `Function#bind`, this method doesn't set the \"length\"\n * property of bound functions.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to bind.\n * @param {*} thisArg The `this` binding of `func`.\n * @param {...*} [partials] The arguments to be partially applied.\n * @returns {Function} Returns the new bound function.\n * @example\n *\n * function greet(greeting, punctuation) {\n * return greeting + ' ' + this.user + punctuation;\n * }\n *\n * var object = { 'user': 'fred' };\n *\n * var bound = _.bind(greet, object, 'hi');\n * bound('!');\n * // => 'hi fred!'\n *\n * // Bound with placeholders.\n * var bound = _.bind(greet, object, _, '!');\n * bound('hi');\n * // => 'hi fred!'\n */\n var bind = baseRest(function(func, thisArg, partials) {\n var bitmask = WRAP_BIND_FLAG;\n if (partials.length) {\n var holders = replaceHolders(partials, getHolder(bind));\n bitmask |= WRAP_PARTIAL_FLAG;\n }\n return createWrap(func, bitmask, thisArg, partials, holders);\n });\n\n /**\n * Creates a function that invokes the method at `object[key]` with `partials`\n * prepended to the arguments it receives.\n *\n * This method differs from `_.bind` by allowing bound functions to reference\n * methods that may be redefined or don't yet exist. See\n * [Peter Michaux's article](http://peter.michaux.ca/articles/lazy-function-definition-pattern)\n * for more details.\n *\n * The `_.bindKey.placeholder` value, which defaults to `_` in monolithic\n * builds, may be used as a placeholder for partially applied arguments.\n *\n * @static\n * @memberOf _\n * @since 0.10.0\n * @category Function\n * @param {Object} object The object to invoke the method on.\n * @param {string} key The key of the method.\n * @param {...*} [partials] The arguments to be partially applied.\n * @returns {Function} Returns the new bound function.\n * @example\n *\n * var object = {\n * 'user': 'fred',\n * 'greet': function(greeting, punctuation) {\n * return greeting + ' ' + this.user + punctuation;\n * }\n * };\n *\n * var bound = _.bindKey(object, 'greet', 'hi');\n * bound('!');\n * // => 'hi fred!'\n *\n * object.greet = function(greeting, punctuation) {\n * return greeting + 'ya ' + this.user + punctuation;\n * };\n *\n * bound('!');\n * // => 'hiya fred!'\n *\n * // Bound with placeholders.\n * var bound = _.bindKey(object, 'greet', _, '!');\n * bound('hi');\n * // => 'hiya fred!'\n */\n var bindKey = baseRest(function(object, key, partials) {\n var bitmask = WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG;\n if (partials.length) {\n var holders = replaceHolders(partials, getHolder(bindKey));\n bitmask |= WRAP_PARTIAL_FLAG;\n }\n return createWrap(key, bitmask, object, partials, holders);\n });\n\n /**\n * Creates a function that accepts arguments of `func` and either invokes\n * `func` returning its result, if at least `arity` number of arguments have\n * been provided, or returns a function that accepts the remaining `func`\n * arguments, and so on. The arity of `func` may be specified if `func.length`\n * is not sufficient.\n *\n * The `_.curry.placeholder` value, which defaults to `_` in monolithic builds,\n * may be used as a placeholder for provided arguments.\n *\n * **Note:** This method doesn't set the \"length\" property of curried functions.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Function\n * @param {Function} func The function to curry.\n * @param {number} [arity=func.length] The arity of `func`.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Function} Returns the new curried function.\n * @example\n *\n * var abc = function(a, b, c) {\n * return [a, b, c];\n * };\n *\n * var curried = _.curry(abc);\n *\n * curried(1)(2)(3);\n * // => [1, 2, 3]\n *\n * curried(1, 2)(3);\n * // => [1, 2, 3]\n *\n * curried(1, 2, 3);\n * // => [1, 2, 3]\n *\n * // Curried with placeholders.\n * curried(1)(_, 3)(2);\n * // => [1, 2, 3]\n */\n function curry(func, arity, guard) {\n arity = guard ? undefined : arity;\n var result = createWrap(func, WRAP_CURRY_FLAG, undefined, undefined, undefined, undefined, undefined, arity);\n result.placeholder = curry.placeholder;\n return result;\n }\n\n /**\n * This method is like `_.curry` except that arguments are applied to `func`\n * in the manner of `_.partialRight` instead of `_.partial`.\n *\n * The `_.curryRight.placeholder` value, which defaults to `_` in monolithic\n * builds, may be used as a placeholder for provided arguments.\n *\n * **Note:** This method doesn't set the \"length\" property of curried functions.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Function\n * @param {Function} func The function to curry.\n * @param {number} [arity=func.length] The arity of `func`.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Function} Returns the new curried function.\n * @example\n *\n * var abc = function(a, b, c) {\n * return [a, b, c];\n * };\n *\n * var curried = _.curryRight(abc);\n *\n * curried(3)(2)(1);\n * // => [1, 2, 3]\n *\n * curried(2, 3)(1);\n * // => [1, 2, 3]\n *\n * curried(1, 2, 3);\n * // => [1, 2, 3]\n *\n * // Curried with placeholders.\n * curried(3)(1, _)(2);\n * // => [1, 2, 3]\n */\n function curryRight(func, arity, guard) {\n arity = guard ? undefined : arity;\n var result = createWrap(func, WRAP_CURRY_RIGHT_FLAG, undefined, undefined, undefined, undefined, undefined, arity);\n result.placeholder = curryRight.placeholder;\n return result;\n }\n\n /**\n * Creates a debounced function that delays invoking `func` until after `wait`\n * milliseconds have elapsed since the last time the debounced function was\n * invoked. The debounced function comes with a `cancel` method to cancel\n * delayed `func` invocations and a `flush` method to immediately invoke them.\n * Provide `options` to indicate whether `func` should be invoked on the\n * leading and/or trailing edge of the `wait` timeout. The `func` is invoked\n * with the last arguments provided to the debounced function. Subsequent\n * calls to the debounced function return the result of the last `func`\n * invocation.\n *\n * **Note:** If `leading` and `trailing` options are `true`, `func` is\n * invoked on the trailing edge of the timeout only if the debounced function\n * is invoked more than once during the `wait` timeout.\n *\n * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred\n * until to the next tick, similar to `setTimeout` with a timeout of `0`.\n *\n * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)\n * for details over the differences between `_.debounce` and `_.throttle`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to debounce.\n * @param {number} [wait=0] The number of milliseconds to delay.\n * @param {Object} [options={}] The options object.\n * @param {boolean} [options.leading=false]\n * Specify invoking on the leading edge of the timeout.\n * @param {number} [options.maxWait]\n * The maximum time `func` is allowed to be delayed before it's invoked.\n * @param {boolean} [options.trailing=true]\n * Specify invoking on the trailing edge of the timeout.\n * @returns {Function} Returns the new debounced function.\n * @example\n *\n * // Avoid costly calculations while the window size is in flux.\n * jQuery(window).on('resize', _.debounce(calculateLayout, 150));\n *\n * // Invoke `sendMail` when clicked, debouncing subsequent calls.\n * jQuery(element).on('click', _.debounce(sendMail, 300, {\n * 'leading': true,\n * 'trailing': false\n * }));\n *\n * // Ensure `batchLog` is invoked once after 1 second of debounced calls.\n * var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 });\n * var source = new EventSource('/stream');\n * jQuery(source).on('message', debounced);\n *\n * // Cancel the trailing debounced invocation.\n * jQuery(window).on('popstate', debounced.cancel);\n */\n function debounce(func, wait, options) {\n var lastArgs,\n lastThis,\n maxWait,\n result,\n timerId,\n lastCallTime,\n lastInvokeTime = 0,\n leading = false,\n maxing = false,\n trailing = true;\n\n if (typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n wait = toNumber(wait) || 0;\n if (isObject(options)) {\n leading = !!options.leading;\n maxing = 'maxWait' in options;\n maxWait = maxing ? nativeMax(toNumber(options.maxWait) || 0, wait) : maxWait;\n trailing = 'trailing' in options ? !!options.trailing : trailing;\n }\n\n function invokeFunc(time) {\n var args = lastArgs,\n thisArg = lastThis;\n\n lastArgs = lastThis = undefined;\n lastInvokeTime = time;\n result = func.apply(thisArg, args);\n return result;\n }\n\n function leadingEdge(time) {\n // Reset any `maxWait` timer.\n lastInvokeTime = time;\n // Start the timer for the trailing edge.\n timerId = setTimeout(timerExpired, wait);\n // Invoke the leading edge.\n return leading ? invokeFunc(time) : result;\n }\n\n function remainingWait(time) {\n var timeSinceLastCall = time - lastCallTime,\n timeSinceLastInvoke = time - lastInvokeTime,\n timeWaiting = wait - timeSinceLastCall;\n\n return maxing\n ? nativeMin(timeWaiting, maxWait - timeSinceLastInvoke)\n : timeWaiting;\n }\n\n function shouldInvoke(time) {\n var timeSinceLastCall = time - lastCallTime,\n timeSinceLastInvoke = time - lastInvokeTime;\n\n // Either this is the first call, activity has stopped and we're at the\n // trailing edge, the system time has gone backwards and we're treating\n // it as the trailing edge, or we've hit the `maxWait` limit.\n return (lastCallTime === undefined || (timeSinceLastCall >= wait) ||\n (timeSinceLastCall < 0) || (maxing && timeSinceLastInvoke >= maxWait));\n }\n\n function timerExpired() {\n var time = now();\n if (shouldInvoke(time)) {\n return trailingEdge(time);\n }\n // Restart the timer.\n timerId = setTimeout(timerExpired, remainingWait(time));\n }\n\n function trailingEdge(time) {\n timerId = undefined;\n\n // Only invoke if we have `lastArgs` which means `func` has been\n // debounced at least once.\n if (trailing && lastArgs) {\n return invokeFunc(time);\n }\n lastArgs = lastThis = undefined;\n return result;\n }\n\n function cancel() {\n if (timerId !== undefined) {\n clearTimeout(timerId);\n }\n lastInvokeTime = 0;\n lastArgs = lastCallTime = lastThis = timerId = undefined;\n }\n\n function flush() {\n return timerId === undefined ? result : trailingEdge(now());\n }\n\n function debounced() {\n var time = now(),\n isInvoking = shouldInvoke(time);\n\n lastArgs = arguments;\n lastThis = this;\n lastCallTime = time;\n\n if (isInvoking) {\n if (timerId === undefined) {\n return leadingEdge(lastCallTime);\n }\n if (maxing) {\n // Handle invocations in a tight loop.\n clearTimeout(timerId);\n timerId = setTimeout(timerExpired, wait);\n return invokeFunc(lastCallTime);\n }\n }\n if (timerId === undefined) {\n timerId = setTimeout(timerExpired, wait);\n }\n return result;\n }\n debounced.cancel = cancel;\n debounced.flush = flush;\n return debounced;\n }\n\n /**\n * Defers invoking the `func` until the current call stack has cleared. Any\n * additional arguments are provided to `func` when it's invoked.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to defer.\n * @param {...*} [args] The arguments to invoke `func` with.\n * @returns {number} Returns the timer id.\n * @example\n *\n * _.defer(function(text) {\n * console.log(text);\n * }, 'deferred');\n * // => Logs 'deferred' after one millisecond.\n */\n var defer = baseRest(function(func, args) {\n return baseDelay(func, 1, args);\n });\n\n /**\n * Invokes `func` after `wait` milliseconds. Any additional arguments are\n * provided to `func` when it's invoked.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to delay.\n * @param {number} wait The number of milliseconds to delay invocation.\n * @param {...*} [args] The arguments to invoke `func` with.\n * @returns {number} Returns the timer id.\n * @example\n *\n * _.delay(function(text) {\n * console.log(text);\n * }, 1000, 'later');\n * // => Logs 'later' after one second.\n */\n var delay = baseRest(function(func, wait, args) {\n return baseDelay(func, toNumber(wait) || 0, args);\n });\n\n /**\n * Creates a function that invokes `func` with arguments reversed.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Function\n * @param {Function} func The function to flip arguments for.\n * @returns {Function} Returns the new flipped function.\n * @example\n *\n * var flipped = _.flip(function() {\n * return _.toArray(arguments);\n * });\n *\n * flipped('a', 'b', 'c', 'd');\n * // => ['d', 'c', 'b', 'a']\n */\n function flip(func) {\n return createWrap(func, WRAP_FLIP_FLAG);\n }\n\n /**\n * Creates a function that memoizes the result of `func`. If `resolver` is\n * provided, it determines the cache key for storing the result based on the\n * arguments provided to the memoized function. By default, the first argument\n * provided to the memoized function is used as the map cache key. The `func`\n * is invoked with the `this` binding of the memoized function.\n *\n * **Note:** The cache is exposed as the `cache` property on the memoized\n * function. Its creation may be customized by replacing the `_.memoize.Cache`\n * constructor with one whose instances implement the\n * [`Map`](http://ecma-international.org/ecma-262/7.0/#sec-properties-of-the-map-prototype-object)\n * method interface of `clear`, `delete`, `get`, `has`, and `set`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to have its output memoized.\n * @param {Function} [resolver] The function to resolve the cache key.\n * @returns {Function} Returns the new memoized function.\n * @example\n *\n * var object = { 'a': 1, 'b': 2 };\n * var other = { 'c': 3, 'd': 4 };\n *\n * var values = _.memoize(_.values);\n * values(object);\n * // => [1, 2]\n *\n * values(other);\n * // => [3, 4]\n *\n * object.a = 2;\n * values(object);\n * // => [1, 2]\n *\n * // Modify the result cache.\n * values.cache.set(object, ['a', 'b']);\n * values(object);\n * // => ['a', 'b']\n *\n * // Replace `_.memoize.Cache`.\n * _.memoize.Cache = WeakMap;\n */\n function memoize(func, resolver) {\n if (typeof func != 'function' || (resolver != null && typeof resolver != 'function')) {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n var memoized = function() {\n var args = arguments,\n key = resolver ? resolver.apply(this, args) : args[0],\n cache = memoized.cache;\n\n if (cache.has(key)) {\n return cache.get(key);\n }\n var result = func.apply(this, args);\n memoized.cache = cache.set(key, result) || cache;\n return result;\n };\n memoized.cache = new (memoize.Cache || MapCache);\n return memoized;\n }\n\n // Expose `MapCache`.\n memoize.Cache = MapCache;\n\n /**\n * Creates a function that negates the result of the predicate `func`. The\n * `func` predicate is invoked with the `this` binding and arguments of the\n * created function.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Function\n * @param {Function} predicate The predicate to negate.\n * @returns {Function} Returns the new negated function.\n * @example\n *\n * function isEven(n) {\n * return n % 2 == 0;\n * }\n *\n * _.filter([1, 2, 3, 4, 5, 6], _.negate(isEven));\n * // => [1, 3, 5]\n */\n function negate(predicate) {\n if (typeof predicate != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n return function() {\n var args = arguments;\n switch (args.length) {\n case 0: return !predicate.call(this);\n case 1: return !predicate.call(this, args[0]);\n case 2: return !predicate.call(this, args[0], args[1]);\n case 3: return !predicate.call(this, args[0], args[1], args[2]);\n }\n return !predicate.apply(this, args);\n };\n }\n\n /**\n * Creates a function that is restricted to invoking `func` once. Repeat calls\n * to the function return the value of the first invocation. The `func` is\n * invoked with the `this` binding and arguments of the created function.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to restrict.\n * @returns {Function} Returns the new restricted function.\n * @example\n *\n * var initialize = _.once(createApplication);\n * initialize();\n * initialize();\n * // => `createApplication` is invoked once\n */\n function once(func) {\n return before(2, func);\n }\n\n /**\n * Creates a function that invokes `func` with its arguments transformed.\n *\n * @static\n * @since 4.0.0\n * @memberOf _\n * @category Function\n * @param {Function} func The function to wrap.\n * @param {...(Function|Function[])} [transforms=[_.identity]]\n * The argument transforms.\n * @returns {Function} Returns the new function.\n * @example\n *\n * function doubled(n) {\n * return n * 2;\n * }\n *\n * function square(n) {\n * return n * n;\n * }\n *\n * var func = _.overArgs(function(x, y) {\n * return [x, y];\n * }, [square, doubled]);\n *\n * func(9, 3);\n * // => [81, 6]\n *\n * func(10, 5);\n * // => [100, 10]\n */\n var overArgs = castRest(function(func, transforms) {\n transforms = (transforms.length == 1 && isArray(transforms[0]))\n ? arrayMap(transforms[0], baseUnary(getIteratee()))\n : arrayMap(baseFlatten(transforms, 1), baseUnary(getIteratee()));\n\n var funcsLength = transforms.length;\n return baseRest(function(args) {\n var index = -1,\n length = nativeMin(args.length, funcsLength);\n\n while (++index < length) {\n args[index] = transforms[index].call(this, args[index]);\n }\n return apply(func, this, args);\n });\n });\n\n /**\n * Creates a function that invokes `func` with `partials` prepended to the\n * arguments it receives. This method is like `_.bind` except it does **not**\n * alter the `this` binding.\n *\n * The `_.partial.placeholder` value, which defaults to `_` in monolithic\n * builds, may be used as a placeholder for partially applied arguments.\n *\n * **Note:** This method doesn't set the \"length\" property of partially\n * applied functions.\n *\n * @static\n * @memberOf _\n * @since 0.2.0\n * @category Function\n * @param {Function} func The function to partially apply arguments to.\n * @param {...*} [partials] The arguments to be partially applied.\n * @returns {Function} Returns the new partially applied function.\n * @example\n *\n * function greet(greeting, name) {\n * return greeting + ' ' + name;\n * }\n *\n * var sayHelloTo = _.partial(greet, 'hello');\n * sayHelloTo('fred');\n * // => 'hello fred'\n *\n * // Partially applied with placeholders.\n * var greetFred = _.partial(greet, _, 'fred');\n * greetFred('hi');\n * // => 'hi fred'\n */\n var partial = baseRest(function(func, partials) {\n var holders = replaceHolders(partials, getHolder(partial));\n return createWrap(func, WRAP_PARTIAL_FLAG, undefined, partials, holders);\n });\n\n /**\n * This method is like `_.partial` except that partially applied arguments\n * are appended to the arguments it receives.\n *\n * The `_.partialRight.placeholder` value, which defaults to `_` in monolithic\n * builds, may be used as a placeholder for partially applied arguments.\n *\n * **Note:** This method doesn't set the \"length\" property of partially\n * applied functions.\n *\n * @static\n * @memberOf _\n * @since 1.0.0\n * @category Function\n * @param {Function} func The function to partially apply arguments to.\n * @param {...*} [partials] The arguments to be partially applied.\n * @returns {Function} Returns the new partially applied function.\n * @example\n *\n * function greet(greeting, name) {\n * return greeting + ' ' + name;\n * }\n *\n * var greetFred = _.partialRight(greet, 'fred');\n * greetFred('hi');\n * // => 'hi fred'\n *\n * // Partially applied with placeholders.\n * var sayHelloTo = _.partialRight(greet, 'hello', _);\n * sayHelloTo('fred');\n * // => 'hello fred'\n */\n var partialRight = baseRest(function(func, partials) {\n var holders = replaceHolders(partials, getHolder(partialRight));\n return createWrap(func, WRAP_PARTIAL_RIGHT_FLAG, undefined, partials, holders);\n });\n\n /**\n * Creates a function that invokes `func` with arguments arranged according\n * to the specified `indexes` where the argument value at the first index is\n * provided as the first argument, the argument value at the second index is\n * provided as the second argument, and so on.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Function\n * @param {Function} func The function to rearrange arguments for.\n * @param {...(number|number[])} indexes The arranged argument indexes.\n * @returns {Function} Returns the new function.\n * @example\n *\n * var rearged = _.rearg(function(a, b, c) {\n * return [a, b, c];\n * }, [2, 0, 1]);\n *\n * rearged('b', 'c', 'a')\n * // => ['a', 'b', 'c']\n */\n var rearg = flatRest(function(func, indexes) {\n return createWrap(func, WRAP_REARG_FLAG, undefined, undefined, undefined, indexes);\n });\n\n /**\n * Creates a function that invokes `func` with the `this` binding of the\n * created function and arguments from `start` and beyond provided as\n * an array.\n *\n * **Note:** This method is based on the\n * [rest parameter](https://mdn.io/rest_parameters).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Function\n * @param {Function} func The function to apply a rest parameter to.\n * @param {number} [start=func.length-1] The start position of the rest parameter.\n * @returns {Function} Returns the new function.\n * @example\n *\n * var say = _.rest(function(what, names) {\n * return what + ' ' + _.initial(names).join(', ') +\n * (_.size(names) > 1 ? ', & ' : '') + _.last(names);\n * });\n *\n * say('hello', 'fred', 'barney', 'pebbles');\n * // => 'hello fred, barney, & pebbles'\n */\n function rest(func, start) {\n if (typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n start = start === undefined ? start : toInteger(start);\n return baseRest(func, start);\n }\n\n /**\n * Creates a function that invokes `func` with the `this` binding of the\n * create function and an array of arguments much like\n * [`Function#apply`](http://www.ecma-international.org/ecma-262/7.0/#sec-function.prototype.apply).\n *\n * **Note:** This method is based on the\n * [spread operator](https://mdn.io/spread_operator).\n *\n * @static\n * @memberOf _\n * @since 3.2.0\n * @category Function\n * @param {Function} func The function to spread arguments over.\n * @param {number} [start=0] The start position of the spread.\n * @returns {Function} Returns the new function.\n * @example\n *\n * var say = _.spread(function(who, what) {\n * return who + ' says ' + what;\n * });\n *\n * say(['fred', 'hello']);\n * // => 'fred says hello'\n *\n * var numbers = Promise.all([\n * Promise.resolve(40),\n * Promise.resolve(36)\n * ]);\n *\n * numbers.then(_.spread(function(x, y) {\n * return x + y;\n * }));\n * // => a Promise of 76\n */\n function spread(func, start) {\n if (typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n start = start == null ? 0 : nativeMax(toInteger(start), 0);\n return baseRest(function(args) {\n var array = args[start],\n otherArgs = castSlice(args, 0, start);\n\n if (array) {\n arrayPush(otherArgs, array);\n }\n return apply(func, this, otherArgs);\n });\n }\n\n /**\n * Creates a throttled function that only invokes `func` at most once per\n * every `wait` milliseconds. The throttled function comes with a `cancel`\n * method to cancel delayed `func` invocations and a `flush` method to\n * immediately invoke them. Provide `options` to indicate whether `func`\n * should be invoked on the leading and/or trailing edge of the `wait`\n * timeout. The `func` is invoked with the last arguments provided to the\n * throttled function. Subsequent calls to the throttled function return the\n * result of the last `func` invocation.\n *\n * **Note:** If `leading` and `trailing` options are `true`, `func` is\n * invoked on the trailing edge of the timeout only if the throttled function\n * is invoked more than once during the `wait` timeout.\n *\n * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred\n * until to the next tick, similar to `setTimeout` with a timeout of `0`.\n *\n * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)\n * for details over the differences between `_.throttle` and `_.debounce`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to throttle.\n * @param {number} [wait=0] The number of milliseconds to throttle invocations to.\n * @param {Object} [options={}] The options object.\n * @param {boolean} [options.leading=true]\n * Specify invoking on the leading edge of the timeout.\n * @param {boolean} [options.trailing=true]\n * Specify invoking on the trailing edge of the timeout.\n * @returns {Function} Returns the new throttled function.\n * @example\n *\n * // Avoid excessively updating the position while scrolling.\n * jQuery(window).on('scroll', _.throttle(updatePosition, 100));\n *\n * // Invoke `renewToken` when the click event is fired, but not more than once every 5 minutes.\n * var throttled = _.throttle(renewToken, 300000, { 'trailing': false });\n * jQuery(element).on('click', throttled);\n *\n * // Cancel the trailing throttled invocation.\n * jQuery(window).on('popstate', throttled.cancel);\n */\n function throttle(func, wait, options) {\n var leading = true,\n trailing = true;\n\n if (typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n if (isObject(options)) {\n leading = 'leading' in options ? !!options.leading : leading;\n trailing = 'trailing' in options ? !!options.trailing : trailing;\n }\n return debounce(func, wait, {\n 'leading': leading,\n 'maxWait': wait,\n 'trailing': trailing\n });\n }\n\n /**\n * Creates a function that accepts up to one argument, ignoring any\n * additional arguments.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Function\n * @param {Function} func The function to cap arguments for.\n * @returns {Function} Returns the new capped function.\n * @example\n *\n * _.map(['6', '8', '10'], _.unary(parseInt));\n * // => [6, 8, 10]\n */\n function unary(func) {\n return ary(func, 1);\n }\n\n /**\n * Creates a function that provides `value` to `wrapper` as its first\n * argument. Any additional arguments provided to the function are appended\n * to those provided to the `wrapper`. The wrapper is invoked with the `this`\n * binding of the created function.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {*} value The value to wrap.\n * @param {Function} [wrapper=identity] The wrapper function.\n * @returns {Function} Returns the new function.\n * @example\n *\n * var p = _.wrap(_.escape, function(func, text) {\n * return '

' + func(text) + '

';\n * });\n *\n * p('fred, barney, & pebbles');\n * // => '

fred, barney, & pebbles

'\n */\n function wrap(value, wrapper) {\n return partial(castFunction(wrapper), value);\n }\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Casts `value` as an array if it's not one.\n *\n * @static\n * @memberOf _\n * @since 4.4.0\n * @category Lang\n * @param {*} value The value to inspect.\n * @returns {Array} Returns the cast array.\n * @example\n *\n * _.castArray(1);\n * // => [1]\n *\n * _.castArray({ 'a': 1 });\n * // => [{ 'a': 1 }]\n *\n * _.castArray('abc');\n * // => ['abc']\n *\n * _.castArray(null);\n * // => [null]\n *\n * _.castArray(undefined);\n * // => [undefined]\n *\n * _.castArray();\n * // => []\n *\n * var array = [1, 2, 3];\n * console.log(_.castArray(array) === array);\n * // => true\n */\n function castArray() {\n if (!arguments.length) {\n return [];\n }\n var value = arguments[0];\n return isArray(value) ? value : [value];\n }\n\n /**\n * Creates a shallow clone of `value`.\n *\n * **Note:** This method is loosely based on the\n * [structured clone algorithm](https://mdn.io/Structured_clone_algorithm)\n * and supports cloning arrays, array buffers, booleans, date objects, maps,\n * numbers, `Object` objects, regexes, sets, strings, symbols, and typed\n * arrays. The own enumerable properties of `arguments` objects are cloned\n * as plain objects. An empty object is returned for uncloneable values such\n * as error objects, functions, DOM nodes, and WeakMaps.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to clone.\n * @returns {*} Returns the cloned value.\n * @see _.cloneDeep\n * @example\n *\n * var objects = [{ 'a': 1 }, { 'b': 2 }];\n *\n * var shallow = _.clone(objects);\n * console.log(shallow[0] === objects[0]);\n * // => true\n */\n function clone(value) {\n return baseClone(value, CLONE_SYMBOLS_FLAG);\n }\n\n /**\n * This method is like `_.clone` except that it accepts `customizer` which\n * is invoked to produce the cloned value. If `customizer` returns `undefined`,\n * cloning is handled by the method instead. The `customizer` is invoked with\n * up to four arguments; (value [, index|key, object, stack]).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to clone.\n * @param {Function} [customizer] The function to customize cloning.\n * @returns {*} Returns the cloned value.\n * @see _.cloneDeepWith\n * @example\n *\n * function customizer(value) {\n * if (_.isElement(value)) {\n * return value.cloneNode(false);\n * }\n * }\n *\n * var el = _.cloneWith(document.body, customizer);\n *\n * console.log(el === document.body);\n * // => false\n * console.log(el.nodeName);\n * // => 'BODY'\n * console.log(el.childNodes.length);\n * // => 0\n */\n function cloneWith(value, customizer) {\n customizer = typeof customizer == 'function' ? customizer : undefined;\n return baseClone(value, CLONE_SYMBOLS_FLAG, customizer);\n }\n\n /**\n * This method is like `_.clone` except that it recursively clones `value`.\n *\n * @static\n * @memberOf _\n * @since 1.0.0\n * @category Lang\n * @param {*} value The value to recursively clone.\n * @returns {*} Returns the deep cloned value.\n * @see _.clone\n * @example\n *\n * var objects = [{ 'a': 1 }, { 'b': 2 }];\n *\n * var deep = _.cloneDeep(objects);\n * console.log(deep[0] === objects[0]);\n * // => false\n */\n function cloneDeep(value) {\n return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG);\n }\n\n /**\n * This method is like `_.cloneWith` except that it recursively clones `value`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to recursively clone.\n * @param {Function} [customizer] The function to customize cloning.\n * @returns {*} Returns the deep cloned value.\n * @see _.cloneWith\n * @example\n *\n * function customizer(value) {\n * if (_.isElement(value)) {\n * return value.cloneNode(true);\n * }\n * }\n *\n * var el = _.cloneDeepWith(document.body, customizer);\n *\n * console.log(el === document.body);\n * // => false\n * console.log(el.nodeName);\n * // => 'BODY'\n * console.log(el.childNodes.length);\n * // => 20\n */\n function cloneDeepWith(value, customizer) {\n customizer = typeof customizer == 'function' ? customizer : undefined;\n return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG, customizer);\n }\n\n /**\n * Checks if `object` conforms to `source` by invoking the predicate\n * properties of `source` with the corresponding property values of `object`.\n *\n * **Note:** This method is equivalent to `_.conforms` when `source` is\n * partially applied.\n *\n * @static\n * @memberOf _\n * @since 4.14.0\n * @category Lang\n * @param {Object} object The object to inspect.\n * @param {Object} source The object of property predicates to conform to.\n * @returns {boolean} Returns `true` if `object` conforms, else `false`.\n * @example\n *\n * var object = { 'a': 1, 'b': 2 };\n *\n * _.conformsTo(object, { 'b': function(n) { return n > 1; } });\n * // => true\n *\n * _.conformsTo(object, { 'b': function(n) { return n > 2; } });\n * // => false\n */\n function conformsTo(object, source) {\n return source == null || baseConformsTo(object, source, keys(source));\n }\n\n /**\n * Performs a\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * comparison between two values to determine if they are equivalent.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n * @example\n *\n * var object = { 'a': 1 };\n * var other = { 'a': 1 };\n *\n * _.eq(object, object);\n * // => true\n *\n * _.eq(object, other);\n * // => false\n *\n * _.eq('a', 'a');\n * // => true\n *\n * _.eq('a', Object('a'));\n * // => false\n *\n * _.eq(NaN, NaN);\n * // => true\n */\n function eq(value, other) {\n return value === other || (value !== value && other !== other);\n }\n\n /**\n * Checks if `value` is greater than `other`.\n *\n * @static\n * @memberOf _\n * @since 3.9.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if `value` is greater than `other`,\n * else `false`.\n * @see _.lt\n * @example\n *\n * _.gt(3, 1);\n * // => true\n *\n * _.gt(3, 3);\n * // => false\n *\n * _.gt(1, 3);\n * // => false\n */\n var gt = createRelationalOperation(baseGt);\n\n /**\n * Checks if `value` is greater than or equal to `other`.\n *\n * @static\n * @memberOf _\n * @since 3.9.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if `value` is greater than or equal to\n * `other`, else `false`.\n * @see _.lte\n * @example\n *\n * _.gte(3, 1);\n * // => true\n *\n * _.gte(3, 3);\n * // => true\n *\n * _.gte(1, 3);\n * // => false\n */\n var gte = createRelationalOperation(function(value, other) {\n return value >= other;\n });\n\n /**\n * Checks if `value` is likely an `arguments` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an `arguments` object,\n * else `false`.\n * @example\n *\n * _.isArguments(function() { return arguments; }());\n * // => true\n *\n * _.isArguments([1, 2, 3]);\n * // => false\n */\n var isArguments = baseIsArguments(function() { return arguments; }()) ? baseIsArguments : function(value) {\n return isObjectLike(value) && hasOwnProperty.call(value, 'callee') &&\n !propertyIsEnumerable.call(value, 'callee');\n };\n\n /**\n * Checks if `value` is classified as an `Array` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an array, else `false`.\n * @example\n *\n * _.isArray([1, 2, 3]);\n * // => true\n *\n * _.isArray(document.body.children);\n * // => false\n *\n * _.isArray('abc');\n * // => false\n *\n * _.isArray(_.noop);\n * // => false\n */\n var isArray = Array.isArray;\n\n /**\n * Checks if `value` is classified as an `ArrayBuffer` object.\n *\n * @static\n * @memberOf _\n * @since 4.3.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.\n * @example\n *\n * _.isArrayBuffer(new ArrayBuffer(2));\n * // => true\n *\n * _.isArrayBuffer(new Array(2));\n * // => false\n */\n var isArrayBuffer = nodeIsArrayBuffer ? baseUnary(nodeIsArrayBuffer) : baseIsArrayBuffer;\n\n /**\n * Checks if `value` is array-like. A value is considered array-like if it's\n * not a function and has a `value.length` that's an integer greater than or\n * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is array-like, else `false`.\n * @example\n *\n * _.isArrayLike([1, 2, 3]);\n * // => true\n *\n * _.isArrayLike(document.body.children);\n * // => true\n *\n * _.isArrayLike('abc');\n * // => true\n *\n * _.isArrayLike(_.noop);\n * // => false\n */\n function isArrayLike(value) {\n return value != null && isLength(value.length) && !isFunction(value);\n }\n\n /**\n * This method is like `_.isArrayLike` except that it also checks if `value`\n * is an object.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an array-like object,\n * else `false`.\n * @example\n *\n * _.isArrayLikeObject([1, 2, 3]);\n * // => true\n *\n * _.isArrayLikeObject(document.body.children);\n * // => true\n *\n * _.isArrayLikeObject('abc');\n * // => false\n *\n * _.isArrayLikeObject(_.noop);\n * // => false\n */\n function isArrayLikeObject(value) {\n return isObjectLike(value) && isArrayLike(value);\n }\n\n /**\n * Checks if `value` is classified as a boolean primitive or object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a boolean, else `false`.\n * @example\n *\n * _.isBoolean(false);\n * // => true\n *\n * _.isBoolean(null);\n * // => false\n */\n function isBoolean(value) {\n return value === true || value === false ||\n (isObjectLike(value) && baseGetTag(value) == boolTag);\n }\n\n /**\n * Checks if `value` is a buffer.\n *\n * @static\n * @memberOf _\n * @since 4.3.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a buffer, else `false`.\n * @example\n *\n * _.isBuffer(new Buffer(2));\n * // => true\n *\n * _.isBuffer(new Uint8Array(2));\n * // => false\n */\n var isBuffer = nativeIsBuffer || stubFalse;\n\n /**\n * Checks if `value` is classified as a `Date` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a date object, else `false`.\n * @example\n *\n * _.isDate(new Date);\n * // => true\n *\n * _.isDate('Mon April 23 2012');\n * // => false\n */\n var isDate = nodeIsDate ? baseUnary(nodeIsDate) : baseIsDate;\n\n /**\n * Checks if `value` is likely a DOM element.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a DOM element, else `false`.\n * @example\n *\n * _.isElement(document.body);\n * // => true\n *\n * _.isElement('');\n * // => false\n */\n function isElement(value) {\n return isObjectLike(value) && value.nodeType === 1 && !isPlainObject(value);\n }\n\n /**\n * Checks if `value` is an empty object, collection, map, or set.\n *\n * Objects are considered empty if they have no own enumerable string keyed\n * properties.\n *\n * Array-like values such as `arguments` objects, arrays, buffers, strings, or\n * jQuery-like collections are considered empty if they have a `length` of `0`.\n * Similarly, maps and sets are considered empty if they have a `size` of `0`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is empty, else `false`.\n * @example\n *\n * _.isEmpty(null);\n * // => true\n *\n * _.isEmpty(true);\n * // => true\n *\n * _.isEmpty(1);\n * // => true\n *\n * _.isEmpty([1, 2, 3]);\n * // => false\n *\n * _.isEmpty({ 'a': 1 });\n * // => false\n */\n function isEmpty(value) {\n if (value == null) {\n return true;\n }\n if (isArrayLike(value) &&\n (isArray(value) || typeof value == 'string' || typeof value.splice == 'function' ||\n isBuffer(value) || isTypedArray(value) || isArguments(value))) {\n return !value.length;\n }\n var tag = getTag(value);\n if (tag == mapTag || tag == setTag) {\n return !value.size;\n }\n if (isPrototype(value)) {\n return !baseKeys(value).length;\n }\n for (var key in value) {\n if (hasOwnProperty.call(value, key)) {\n return false;\n }\n }\n return true;\n }\n\n /**\n * Performs a deep comparison between two values to determine if they are\n * equivalent.\n *\n * **Note:** This method supports comparing arrays, array buffers, booleans,\n * date objects, error objects, maps, numbers, `Object` objects, regexes,\n * sets, strings, symbols, and typed arrays. `Object` objects are compared\n * by their own, not inherited, enumerable properties. Functions and DOM\n * nodes are compared by strict equality, i.e. `===`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n * @example\n *\n * var object = { 'a': 1 };\n * var other = { 'a': 1 };\n *\n * _.isEqual(object, other);\n * // => true\n *\n * object === other;\n * // => false\n */\n function isEqual(value, other) {\n return baseIsEqual(value, other);\n }\n\n /**\n * This method is like `_.isEqual` except that it accepts `customizer` which\n * is invoked to compare values. If `customizer` returns `undefined`, comparisons\n * are handled by the method instead. The `customizer` is invoked with up to\n * six arguments: (objValue, othValue [, index|key, object, other, stack]).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @param {Function} [customizer] The function to customize comparisons.\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n * @example\n *\n * function isGreeting(value) {\n * return /^h(?:i|ello)$/.test(value);\n * }\n *\n * function customizer(objValue, othValue) {\n * if (isGreeting(objValue) && isGreeting(othValue)) {\n * return true;\n * }\n * }\n *\n * var array = ['hello', 'goodbye'];\n * var other = ['hi', 'goodbye'];\n *\n * _.isEqualWith(array, other, customizer);\n * // => true\n */\n function isEqualWith(value, other, customizer) {\n customizer = typeof customizer == 'function' ? customizer : undefined;\n var result = customizer ? customizer(value, other) : undefined;\n return result === undefined ? baseIsEqual(value, other, undefined, customizer) : !!result;\n }\n\n /**\n * Checks if `value` is an `Error`, `EvalError`, `RangeError`, `ReferenceError`,\n * `SyntaxError`, `TypeError`, or `URIError` object.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an error object, else `false`.\n * @example\n *\n * _.isError(new Error);\n * // => true\n *\n * _.isError(Error);\n * // => false\n */\n function isError(value) {\n if (!isObjectLike(value)) {\n return false;\n }\n var tag = baseGetTag(value);\n return tag == errorTag || tag == domExcTag ||\n (typeof value.message == 'string' && typeof value.name == 'string' && !isPlainObject(value));\n }\n\n /**\n * Checks if `value` is a finite primitive number.\n *\n * **Note:** This method is based on\n * [`Number.isFinite`](https://mdn.io/Number/isFinite).\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a finite number, else `false`.\n * @example\n *\n * _.isFinite(3);\n * // => true\n *\n * _.isFinite(Number.MIN_VALUE);\n * // => true\n *\n * _.isFinite(Infinity);\n * // => false\n *\n * _.isFinite('3');\n * // => false\n */\n function isFinite(value) {\n return typeof value == 'number' && nativeIsFinite(value);\n }\n\n /**\n * Checks if `value` is classified as a `Function` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a function, else `false`.\n * @example\n *\n * _.isFunction(_);\n * // => true\n *\n * _.isFunction(/abc/);\n * // => false\n */\n function isFunction(value) {\n if (!isObject(value)) {\n return false;\n }\n // The use of `Object#toString` avoids issues with the `typeof` operator\n // in Safari 9 which returns 'object' for typed arrays and other constructors.\n var tag = baseGetTag(value);\n return tag == funcTag || tag == genTag || tag == asyncTag || tag == proxyTag;\n }\n\n /**\n * Checks if `value` is an integer.\n *\n * **Note:** This method is based on\n * [`Number.isInteger`](https://mdn.io/Number/isInteger).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an integer, else `false`.\n * @example\n *\n * _.isInteger(3);\n * // => true\n *\n * _.isInteger(Number.MIN_VALUE);\n * // => false\n *\n * _.isInteger(Infinity);\n * // => false\n *\n * _.isInteger('3');\n * // => false\n */\n function isInteger(value) {\n return typeof value == 'number' && value == toInteger(value);\n }\n\n /**\n * Checks if `value` is a valid array-like length.\n *\n * **Note:** This method is loosely based on\n * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.\n * @example\n *\n * _.isLength(3);\n * // => true\n *\n * _.isLength(Number.MIN_VALUE);\n * // => false\n *\n * _.isLength(Infinity);\n * // => false\n *\n * _.isLength('3');\n * // => false\n */\n function isLength(value) {\n return typeof value == 'number' &&\n value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;\n }\n\n /**\n * Checks if `value` is the\n * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)\n * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an object, else `false`.\n * @example\n *\n * _.isObject({});\n * // => true\n *\n * _.isObject([1, 2, 3]);\n * // => true\n *\n * _.isObject(_.noop);\n * // => true\n *\n * _.isObject(null);\n * // => false\n */\n function isObject(value) {\n var type = typeof value;\n return value != null && (type == 'object' || type == 'function');\n }\n\n /**\n * Checks if `value` is object-like. A value is object-like if it's not `null`\n * and has a `typeof` result of \"object\".\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is object-like, else `false`.\n * @example\n *\n * _.isObjectLike({});\n * // => true\n *\n * _.isObjectLike([1, 2, 3]);\n * // => true\n *\n * _.isObjectLike(_.noop);\n * // => false\n *\n * _.isObjectLike(null);\n * // => false\n */\n function isObjectLike(value) {\n return value != null && typeof value == 'object';\n }\n\n /**\n * Checks if `value` is classified as a `Map` object.\n *\n * @static\n * @memberOf _\n * @since 4.3.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a map, else `false`.\n * @example\n *\n * _.isMap(new Map);\n * // => true\n *\n * _.isMap(new WeakMap);\n * // => false\n */\n var isMap = nodeIsMap ? baseUnary(nodeIsMap) : baseIsMap;\n\n /**\n * Performs a partial deep comparison between `object` and `source` to\n * determine if `object` contains equivalent property values.\n *\n * **Note:** This method is equivalent to `_.matches` when `source` is\n * partially applied.\n *\n * Partial comparisons will match empty array and empty object `source`\n * values against any array or object value, respectively. See `_.isEqual`\n * for a list of supported value comparisons.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Lang\n * @param {Object} object The object to inspect.\n * @param {Object} source The object of property values to match.\n * @returns {boolean} Returns `true` if `object` is a match, else `false`.\n * @example\n *\n * var object = { 'a': 1, 'b': 2 };\n *\n * _.isMatch(object, { 'b': 2 });\n * // => true\n *\n * _.isMatch(object, { 'b': 1 });\n * // => false\n */\n function isMatch(object, source) {\n return object === source || baseIsMatch(object, source, getMatchData(source));\n }\n\n /**\n * This method is like `_.isMatch` except that it accepts `customizer` which\n * is invoked to compare values. If `customizer` returns `undefined`, comparisons\n * are handled by the method instead. The `customizer` is invoked with five\n * arguments: (objValue, srcValue, index|key, object, source).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {Object} object The object to inspect.\n * @param {Object} source The object of property values to match.\n * @param {Function} [customizer] The function to customize comparisons.\n * @returns {boolean} Returns `true` if `object` is a match, else `false`.\n * @example\n *\n * function isGreeting(value) {\n * return /^h(?:i|ello)$/.test(value);\n * }\n *\n * function customizer(objValue, srcValue) {\n * if (isGreeting(objValue) && isGreeting(srcValue)) {\n * return true;\n * }\n * }\n *\n * var object = { 'greeting': 'hello' };\n * var source = { 'greeting': 'hi' };\n *\n * _.isMatchWith(object, source, customizer);\n * // => true\n */\n function isMatchWith(object, source, customizer) {\n customizer = typeof customizer == 'function' ? customizer : undefined;\n return baseIsMatch(object, source, getMatchData(source), customizer);\n }\n\n /**\n * Checks if `value` is `NaN`.\n *\n * **Note:** This method is based on\n * [`Number.isNaN`](https://mdn.io/Number/isNaN) and is not the same as\n * global [`isNaN`](https://mdn.io/isNaN) which returns `true` for\n * `undefined` and other non-number values.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.\n * @example\n *\n * _.isNaN(NaN);\n * // => true\n *\n * _.isNaN(new Number(NaN));\n * // => true\n *\n * isNaN(undefined);\n * // => true\n *\n * _.isNaN(undefined);\n * // => false\n */\n function isNaN(value) {\n // An `NaN` primitive is the only value that is not equal to itself.\n // Perform the `toStringTag` check first to avoid errors with some\n // ActiveX objects in IE.\n return isNumber(value) && value != +value;\n }\n\n /**\n * Checks if `value` is a pristine native function.\n *\n * **Note:** This method can't reliably detect native functions in the presence\n * of the core-js package because core-js circumvents this kind of detection.\n * Despite multiple requests, the core-js maintainer has made it clear: any\n * attempt to fix the detection will be obstructed. As a result, we're left\n * with little choice but to throw an error. Unfortunately, this also affects\n * packages, like [babel-polyfill](https://www.npmjs.com/package/babel-polyfill),\n * which rely on core-js.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a native function,\n * else `false`.\n * @example\n *\n * _.isNative(Array.prototype.push);\n * // => true\n *\n * _.isNative(_);\n * // => false\n */\n function isNative(value) {\n if (isMaskable(value)) {\n throw new Error(CORE_ERROR_TEXT);\n }\n return baseIsNative(value);\n }\n\n /**\n * Checks if `value` is `null`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is `null`, else `false`.\n * @example\n *\n * _.isNull(null);\n * // => true\n *\n * _.isNull(void 0);\n * // => false\n */\n function isNull(value) {\n return value === null;\n }\n\n /**\n * Checks if `value` is `null` or `undefined`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is nullish, else `false`.\n * @example\n *\n * _.isNil(null);\n * // => true\n *\n * _.isNil(void 0);\n * // => true\n *\n * _.isNil(NaN);\n * // => false\n */\n function isNil(value) {\n return value == null;\n }\n\n /**\n * Checks if `value` is classified as a `Number` primitive or object.\n *\n * **Note:** To exclude `Infinity`, `-Infinity`, and `NaN`, which are\n * classified as numbers, use the `_.isFinite` method.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a number, else `false`.\n * @example\n *\n * _.isNumber(3);\n * // => true\n *\n * _.isNumber(Number.MIN_VALUE);\n * // => true\n *\n * _.isNumber(Infinity);\n * // => true\n *\n * _.isNumber('3');\n * // => false\n */\n function isNumber(value) {\n return typeof value == 'number' ||\n (isObjectLike(value) && baseGetTag(value) == numberTag);\n }\n\n /**\n * Checks if `value` is a plain object, that is, an object created by the\n * `Object` constructor or one with a `[[Prototype]]` of `null`.\n *\n * @static\n * @memberOf _\n * @since 0.8.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a plain object, else `false`.\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * }\n *\n * _.isPlainObject(new Foo);\n * // => false\n *\n * _.isPlainObject([1, 2, 3]);\n * // => false\n *\n * _.isPlainObject({ 'x': 0, 'y': 0 });\n * // => true\n *\n * _.isPlainObject(Object.create(null));\n * // => true\n */\n function isPlainObject(value) {\n if (!isObjectLike(value) || baseGetTag(value) != objectTag) {\n return false;\n }\n var proto = getPrototype(value);\n if (proto === null) {\n return true;\n }\n var Ctor = hasOwnProperty.call(proto, 'constructor') && proto.constructor;\n return typeof Ctor == 'function' && Ctor instanceof Ctor &&\n funcToString.call(Ctor) == objectCtorString;\n }\n\n /**\n * Checks if `value` is classified as a `RegExp` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.\n * @example\n *\n * _.isRegExp(/abc/);\n * // => true\n *\n * _.isRegExp('/abc/');\n * // => false\n */\n var isRegExp = nodeIsRegExp ? baseUnary(nodeIsRegExp) : baseIsRegExp;\n\n /**\n * Checks if `value` is a safe integer. An integer is safe if it's an IEEE-754\n * double precision number which isn't the result of a rounded unsafe integer.\n *\n * **Note:** This method is based on\n * [`Number.isSafeInteger`](https://mdn.io/Number/isSafeInteger).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a safe integer, else `false`.\n * @example\n *\n * _.isSafeInteger(3);\n * // => true\n *\n * _.isSafeInteger(Number.MIN_VALUE);\n * // => false\n *\n * _.isSafeInteger(Infinity);\n * // => false\n *\n * _.isSafeInteger('3');\n * // => false\n */\n function isSafeInteger(value) {\n return isInteger(value) && value >= -MAX_SAFE_INTEGER && value <= MAX_SAFE_INTEGER;\n }\n\n /**\n * Checks if `value` is classified as a `Set` object.\n *\n * @static\n * @memberOf _\n * @since 4.3.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a set, else `false`.\n * @example\n *\n * _.isSet(new Set);\n * // => true\n *\n * _.isSet(new WeakSet);\n * // => false\n */\n var isSet = nodeIsSet ? baseUnary(nodeIsSet) : baseIsSet;\n\n /**\n * Checks if `value` is classified as a `String` primitive or object.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a string, else `false`.\n * @example\n *\n * _.isString('abc');\n * // => true\n *\n * _.isString(1);\n * // => false\n */\n function isString(value) {\n return typeof value == 'string' ||\n (!isArray(value) && isObjectLike(value) && baseGetTag(value) == stringTag);\n }\n\n /**\n * Checks if `value` is classified as a `Symbol` primitive or object.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a symbol, else `false`.\n * @example\n *\n * _.isSymbol(Symbol.iterator);\n * // => true\n *\n * _.isSymbol('abc');\n * // => false\n */\n function isSymbol(value) {\n return typeof value == 'symbol' ||\n (isObjectLike(value) && baseGetTag(value) == symbolTag);\n }\n\n /**\n * Checks if `value` is classified as a typed array.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.\n * @example\n *\n * _.isTypedArray(new Uint8Array);\n * // => true\n *\n * _.isTypedArray([]);\n * // => false\n */\n var isTypedArray = nodeIsTypedArray ? baseUnary(nodeIsTypedArray) : baseIsTypedArray;\n\n /**\n * Checks if `value` is `undefined`.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is `undefined`, else `false`.\n * @example\n *\n * _.isUndefined(void 0);\n * // => true\n *\n * _.isUndefined(null);\n * // => false\n */\n function isUndefined(value) {\n return value === undefined;\n }\n\n /**\n * Checks if `value` is classified as a `WeakMap` object.\n *\n * @static\n * @memberOf _\n * @since 4.3.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a weak map, else `false`.\n * @example\n *\n * _.isWeakMap(new WeakMap);\n * // => true\n *\n * _.isWeakMap(new Map);\n * // => false\n */\n function isWeakMap(value) {\n return isObjectLike(value) && getTag(value) == weakMapTag;\n }\n\n /**\n * Checks if `value` is classified as a `WeakSet` object.\n *\n * @static\n * @memberOf _\n * @since 4.3.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a weak set, else `false`.\n * @example\n *\n * _.isWeakSet(new WeakSet);\n * // => true\n *\n * _.isWeakSet(new Set);\n * // => false\n */\n function isWeakSet(value) {\n return isObjectLike(value) && baseGetTag(value) == weakSetTag;\n }\n\n /**\n * Checks if `value` is less than `other`.\n *\n * @static\n * @memberOf _\n * @since 3.9.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if `value` is less than `other`,\n * else `false`.\n * @see _.gt\n * @example\n *\n * _.lt(1, 3);\n * // => true\n *\n * _.lt(3, 3);\n * // => false\n *\n * _.lt(3, 1);\n * // => false\n */\n var lt = createRelationalOperation(baseLt);\n\n /**\n * Checks if `value` is less than or equal to `other`.\n *\n * @static\n * @memberOf _\n * @since 3.9.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if `value` is less than or equal to\n * `other`, else `false`.\n * @see _.gte\n * @example\n *\n * _.lte(1, 3);\n * // => true\n *\n * _.lte(3, 3);\n * // => true\n *\n * _.lte(3, 1);\n * // => false\n */\n var lte = createRelationalOperation(function(value, other) {\n return value <= other;\n });\n\n /**\n * Converts `value` to an array.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {Array} Returns the converted array.\n * @example\n *\n * _.toArray({ 'a': 1, 'b': 2 });\n * // => [1, 2]\n *\n * _.toArray('abc');\n * // => ['a', 'b', 'c']\n *\n * _.toArray(1);\n * // => []\n *\n * _.toArray(null);\n * // => []\n */\n function toArray(value) {\n if (!value) {\n return [];\n }\n if (isArrayLike(value)) {\n return isString(value) ? stringToArray(value) : copyArray(value);\n }\n if (symIterator && value[symIterator]) {\n return iteratorToArray(value[symIterator]());\n }\n var tag = getTag(value),\n func = tag == mapTag ? mapToArray : (tag == setTag ? setToArray : values);\n\n return func(value);\n }\n\n /**\n * Converts `value` to a finite number.\n *\n * @static\n * @memberOf _\n * @since 4.12.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {number} Returns the converted number.\n * @example\n *\n * _.toFinite(3.2);\n * // => 3.2\n *\n * _.toFinite(Number.MIN_VALUE);\n * // => 5e-324\n *\n * _.toFinite(Infinity);\n * // => 1.7976931348623157e+308\n *\n * _.toFinite('3.2');\n * // => 3.2\n */\n function toFinite(value) {\n if (!value) {\n return value === 0 ? value : 0;\n }\n value = toNumber(value);\n if (value === INFINITY || value === -INFINITY) {\n var sign = (value < 0 ? -1 : 1);\n return sign * MAX_INTEGER;\n }\n return value === value ? value : 0;\n }\n\n /**\n * Converts `value` to an integer.\n *\n * **Note:** This method is loosely based on\n * [`ToInteger`](http://www.ecma-international.org/ecma-262/7.0/#sec-tointeger).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {number} Returns the converted integer.\n * @example\n *\n * _.toInteger(3.2);\n * // => 3\n *\n * _.toInteger(Number.MIN_VALUE);\n * // => 0\n *\n * _.toInteger(Infinity);\n * // => 1.7976931348623157e+308\n *\n * _.toInteger('3.2');\n * // => 3\n */\n function toInteger(value) {\n var result = toFinite(value),\n remainder = result % 1;\n\n return result === result ? (remainder ? result - remainder : result) : 0;\n }\n\n /**\n * Converts `value` to an integer suitable for use as the length of an\n * array-like object.\n *\n * **Note:** This method is based on\n * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {number} Returns the converted integer.\n * @example\n *\n * _.toLength(3.2);\n * // => 3\n *\n * _.toLength(Number.MIN_VALUE);\n * // => 0\n *\n * _.toLength(Infinity);\n * // => 4294967295\n *\n * _.toLength('3.2');\n * // => 3\n */\n function toLength(value) {\n return value ? baseClamp(toInteger(value), 0, MAX_ARRAY_LENGTH) : 0;\n }\n\n /**\n * Converts `value` to a number.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to process.\n * @returns {number} Returns the number.\n * @example\n *\n * _.toNumber(3.2);\n * // => 3.2\n *\n * _.toNumber(Number.MIN_VALUE);\n * // => 5e-324\n *\n * _.toNumber(Infinity);\n * // => Infinity\n *\n * _.toNumber('3.2');\n * // => 3.2\n */\n function toNumber(value) {\n if (typeof value == 'number') {\n return value;\n }\n if (isSymbol(value)) {\n return NAN;\n }\n if (isObject(value)) {\n var other = typeof value.valueOf == 'function' ? value.valueOf() : value;\n value = isObject(other) ? (other + '') : other;\n }\n if (typeof value != 'string') {\n return value === 0 ? value : +value;\n }\n value = baseTrim(value);\n var isBinary = reIsBinary.test(value);\n return (isBinary || reIsOctal.test(value))\n ? freeParseInt(value.slice(2), isBinary ? 2 : 8)\n : (reIsBadHex.test(value) ? NAN : +value);\n }\n\n /**\n * Converts `value` to a plain object flattening inherited enumerable string\n * keyed properties of `value` to own properties of the plain object.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {Object} Returns the converted plain object.\n * @example\n *\n * function Foo() {\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.assign({ 'a': 1 }, new Foo);\n * // => { 'a': 1, 'b': 2 }\n *\n * _.assign({ 'a': 1 }, _.toPlainObject(new Foo));\n * // => { 'a': 1, 'b': 2, 'c': 3 }\n */\n function toPlainObject(value) {\n return copyObject(value, keysIn(value));\n }\n\n /**\n * Converts `value` to a safe integer. A safe integer can be compared and\n * represented correctly.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {number} Returns the converted integer.\n * @example\n *\n * _.toSafeInteger(3.2);\n * // => 3\n *\n * _.toSafeInteger(Number.MIN_VALUE);\n * // => 0\n *\n * _.toSafeInteger(Infinity);\n * // => 9007199254740991\n *\n * _.toSafeInteger('3.2');\n * // => 3\n */\n function toSafeInteger(value) {\n return value\n ? baseClamp(toInteger(value), -MAX_SAFE_INTEGER, MAX_SAFE_INTEGER)\n : (value === 0 ? value : 0);\n }\n\n /**\n * Converts `value` to a string. An empty string is returned for `null`\n * and `undefined` values. The sign of `-0` is preserved.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {string} Returns the converted string.\n * @example\n *\n * _.toString(null);\n * // => ''\n *\n * _.toString(-0);\n * // => '-0'\n *\n * _.toString([1, 2, 3]);\n * // => '1,2,3'\n */\n function toString(value) {\n return value == null ? '' : baseToString(value);\n }\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Assigns own enumerable string keyed properties of source objects to the\n * destination object. Source objects are applied from left to right.\n * Subsequent sources overwrite property assignments of previous sources.\n *\n * **Note:** This method mutates `object` and is loosely based on\n * [`Object.assign`](https://mdn.io/Object/assign).\n *\n * @static\n * @memberOf _\n * @since 0.10.0\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} [sources] The source objects.\n * @returns {Object} Returns `object`.\n * @see _.assignIn\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * }\n *\n * function Bar() {\n * this.c = 3;\n * }\n *\n * Foo.prototype.b = 2;\n * Bar.prototype.d = 4;\n *\n * _.assign({ 'a': 0 }, new Foo, new Bar);\n * // => { 'a': 1, 'c': 3 }\n */\n var assign = createAssigner(function(object, source) {\n if (isPrototype(source) || isArrayLike(source)) {\n copyObject(source, keys(source), object);\n return;\n }\n for (var key in source) {\n if (hasOwnProperty.call(source, key)) {\n assignValue(object, key, source[key]);\n }\n }\n });\n\n /**\n * This method is like `_.assign` except that it iterates over own and\n * inherited source properties.\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @alias extend\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} [sources] The source objects.\n * @returns {Object} Returns `object`.\n * @see _.assign\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * }\n *\n * function Bar() {\n * this.c = 3;\n * }\n *\n * Foo.prototype.b = 2;\n * Bar.prototype.d = 4;\n *\n * _.assignIn({ 'a': 0 }, new Foo, new Bar);\n * // => { 'a': 1, 'b': 2, 'c': 3, 'd': 4 }\n */\n var assignIn = createAssigner(function(object, source) {\n copyObject(source, keysIn(source), object);\n });\n\n /**\n * This method is like `_.assignIn` except that it accepts `customizer`\n * which is invoked to produce the assigned values. If `customizer` returns\n * `undefined`, assignment is handled by the method instead. The `customizer`\n * is invoked with five arguments: (objValue, srcValue, key, object, source).\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @alias extendWith\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} sources The source objects.\n * @param {Function} [customizer] The function to customize assigned values.\n * @returns {Object} Returns `object`.\n * @see _.assignWith\n * @example\n *\n * function customizer(objValue, srcValue) {\n * return _.isUndefined(objValue) ? srcValue : objValue;\n * }\n *\n * var defaults = _.partialRight(_.assignInWith, customizer);\n *\n * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });\n * // => { 'a': 1, 'b': 2 }\n */\n var assignInWith = createAssigner(function(object, source, srcIndex, customizer) {\n copyObject(source, keysIn(source), object, customizer);\n });\n\n /**\n * This method is like `_.assign` except that it accepts `customizer`\n * which is invoked to produce the assigned values. If `customizer` returns\n * `undefined`, assignment is handled by the method instead. The `customizer`\n * is invoked with five arguments: (objValue, srcValue, key, object, source).\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} sources The source objects.\n * @param {Function} [customizer] The function to customize assigned values.\n * @returns {Object} Returns `object`.\n * @see _.assignInWith\n * @example\n *\n * function customizer(objValue, srcValue) {\n * return _.isUndefined(objValue) ? srcValue : objValue;\n * }\n *\n * var defaults = _.partialRight(_.assignWith, customizer);\n *\n * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });\n * // => { 'a': 1, 'b': 2 }\n */\n var assignWith = createAssigner(function(object, source, srcIndex, customizer) {\n copyObject(source, keys(source), object, customizer);\n });\n\n /**\n * Creates an array of values corresponding to `paths` of `object`.\n *\n * @static\n * @memberOf _\n * @since 1.0.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {...(string|string[])} [paths] The property paths to pick.\n * @returns {Array} Returns the picked values.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };\n *\n * _.at(object, ['a[0].b.c', 'a[1]']);\n * // => [3, 4]\n */\n var at = flatRest(baseAt);\n\n /**\n * Creates an object that inherits from the `prototype` object. If a\n * `properties` object is given, its own enumerable string keyed properties\n * are assigned to the created object.\n *\n * @static\n * @memberOf _\n * @since 2.3.0\n * @category Object\n * @param {Object} prototype The object to inherit from.\n * @param {Object} [properties] The properties to assign to the object.\n * @returns {Object} Returns the new object.\n * @example\n *\n * function Shape() {\n * this.x = 0;\n * this.y = 0;\n * }\n *\n * function Circle() {\n * Shape.call(this);\n * }\n *\n * Circle.prototype = _.create(Shape.prototype, {\n * 'constructor': Circle\n * });\n *\n * var circle = new Circle;\n * circle instanceof Circle;\n * // => true\n *\n * circle instanceof Shape;\n * // => true\n */\n function create(prototype, properties) {\n var result = baseCreate(prototype);\n return properties == null ? result : baseAssign(result, properties);\n }\n\n /**\n * Assigns own and inherited enumerable string keyed properties of source\n * objects to the destination object for all destination properties that\n * resolve to `undefined`. Source objects are applied from left to right.\n * Once a property is set, additional values of the same property are ignored.\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} [sources] The source objects.\n * @returns {Object} Returns `object`.\n * @see _.defaultsDeep\n * @example\n *\n * _.defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });\n * // => { 'a': 1, 'b': 2 }\n */\n var defaults = baseRest(function(object, sources) {\n object = Object(object);\n\n var index = -1;\n var length = sources.length;\n var guard = length > 2 ? sources[2] : undefined;\n\n if (guard && isIterateeCall(sources[0], sources[1], guard)) {\n length = 1;\n }\n\n while (++index < length) {\n var source = sources[index];\n var props = keysIn(source);\n var propsIndex = -1;\n var propsLength = props.length;\n\n while (++propsIndex < propsLength) {\n var key = props[propsIndex];\n var value = object[key];\n\n if (value === undefined ||\n (eq(value, objectProto[key]) && !hasOwnProperty.call(object, key))) {\n object[key] = source[key];\n }\n }\n }\n\n return object;\n });\n\n /**\n * This method is like `_.defaults` except that it recursively assigns\n * default properties.\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 3.10.0\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} [sources] The source objects.\n * @returns {Object} Returns `object`.\n * @see _.defaults\n * @example\n *\n * _.defaultsDeep({ 'a': { 'b': 2 } }, { 'a': { 'b': 1, 'c': 3 } });\n * // => { 'a': { 'b': 2, 'c': 3 } }\n */\n var defaultsDeep = baseRest(function(args) {\n args.push(undefined, customDefaultsMerge);\n return apply(mergeWith, undefined, args);\n });\n\n /**\n * This method is like `_.find` except that it returns the key of the first\n * element `predicate` returns truthy for instead of the element itself.\n *\n * @static\n * @memberOf _\n * @since 1.1.0\n * @category Object\n * @param {Object} object The object to inspect.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {string|undefined} Returns the key of the matched element,\n * else `undefined`.\n * @example\n *\n * var users = {\n * 'barney': { 'age': 36, 'active': true },\n * 'fred': { 'age': 40, 'active': false },\n * 'pebbles': { 'age': 1, 'active': true }\n * };\n *\n * _.findKey(users, function(o) { return o.age < 40; });\n * // => 'barney' (iteration order is not guaranteed)\n *\n * // The `_.matches` iteratee shorthand.\n * _.findKey(users, { 'age': 1, 'active': true });\n * // => 'pebbles'\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.findKey(users, ['active', false]);\n * // => 'fred'\n *\n * // The `_.property` iteratee shorthand.\n * _.findKey(users, 'active');\n * // => 'barney'\n */\n function findKey(object, predicate) {\n return baseFindKey(object, getIteratee(predicate, 3), baseForOwn);\n }\n\n /**\n * This method is like `_.findKey` except that it iterates over elements of\n * a collection in the opposite order.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Object\n * @param {Object} object The object to inspect.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {string|undefined} Returns the key of the matched element,\n * else `undefined`.\n * @example\n *\n * var users = {\n * 'barney': { 'age': 36, 'active': true },\n * 'fred': { 'age': 40, 'active': false },\n * 'pebbles': { 'age': 1, 'active': true }\n * };\n *\n * _.findLastKey(users, function(o) { return o.age < 40; });\n * // => returns 'pebbles' assuming `_.findKey` returns 'barney'\n *\n * // The `_.matches` iteratee shorthand.\n * _.findLastKey(users, { 'age': 36, 'active': true });\n * // => 'barney'\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.findLastKey(users, ['active', false]);\n * // => 'fred'\n *\n * // The `_.property` iteratee shorthand.\n * _.findLastKey(users, 'active');\n * // => 'pebbles'\n */\n function findLastKey(object, predicate) {\n return baseFindKey(object, getIteratee(predicate, 3), baseForOwnRight);\n }\n\n /**\n * Iterates over own and inherited enumerable string keyed properties of an\n * object and invokes `iteratee` for each property. The iteratee is invoked\n * with three arguments: (value, key, object). Iteratee functions may exit\n * iteration early by explicitly returning `false`.\n *\n * @static\n * @memberOf _\n * @since 0.3.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Object} Returns `object`.\n * @see _.forInRight\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.forIn(new Foo, function(value, key) {\n * console.log(key);\n * });\n * // => Logs 'a', 'b', then 'c' (iteration order is not guaranteed).\n */\n function forIn(object, iteratee) {\n return object == null\n ? object\n : baseFor(object, getIteratee(iteratee, 3), keysIn);\n }\n\n /**\n * This method is like `_.forIn` except that it iterates over properties of\n * `object` in the opposite order.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Object} Returns `object`.\n * @see _.forIn\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.forInRight(new Foo, function(value, key) {\n * console.log(key);\n * });\n * // => Logs 'c', 'b', then 'a' assuming `_.forIn` logs 'a', 'b', then 'c'.\n */\n function forInRight(object, iteratee) {\n return object == null\n ? object\n : baseForRight(object, getIteratee(iteratee, 3), keysIn);\n }\n\n /**\n * Iterates over own enumerable string keyed properties of an object and\n * invokes `iteratee` for each property. The iteratee is invoked with three\n * arguments: (value, key, object). Iteratee functions may exit iteration\n * early by explicitly returning `false`.\n *\n * @static\n * @memberOf _\n * @since 0.3.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Object} Returns `object`.\n * @see _.forOwnRight\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.forOwn(new Foo, function(value, key) {\n * console.log(key);\n * });\n * // => Logs 'a' then 'b' (iteration order is not guaranteed).\n */\n function forOwn(object, iteratee) {\n return object && baseForOwn(object, getIteratee(iteratee, 3));\n }\n\n /**\n * This method is like `_.forOwn` except that it iterates over properties of\n * `object` in the opposite order.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Object} Returns `object`.\n * @see _.forOwn\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.forOwnRight(new Foo, function(value, key) {\n * console.log(key);\n * });\n * // => Logs 'b' then 'a' assuming `_.forOwn` logs 'a' then 'b'.\n */\n function forOwnRight(object, iteratee) {\n return object && baseForOwnRight(object, getIteratee(iteratee, 3));\n }\n\n /**\n * Creates an array of function property names from own enumerable properties\n * of `object`.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The object to inspect.\n * @returns {Array} Returns the function names.\n * @see _.functionsIn\n * @example\n *\n * function Foo() {\n * this.a = _.constant('a');\n * this.b = _.constant('b');\n * }\n *\n * Foo.prototype.c = _.constant('c');\n *\n * _.functions(new Foo);\n * // => ['a', 'b']\n */\n function functions(object) {\n return object == null ? [] : baseFunctions(object, keys(object));\n }\n\n /**\n * Creates an array of function property names from own and inherited\n * enumerable properties of `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The object to inspect.\n * @returns {Array} Returns the function names.\n * @see _.functions\n * @example\n *\n * function Foo() {\n * this.a = _.constant('a');\n * this.b = _.constant('b');\n * }\n *\n * Foo.prototype.c = _.constant('c');\n *\n * _.functionsIn(new Foo);\n * // => ['a', 'b', 'c']\n */\n function functionsIn(object) {\n return object == null ? [] : baseFunctions(object, keysIn(object));\n }\n\n /**\n * Gets the value at `path` of `object`. If the resolved value is\n * `undefined`, the `defaultValue` is returned in its place.\n *\n * @static\n * @memberOf _\n * @since 3.7.0\n * @category Object\n * @param {Object} object The object to query.\n * @param {Array|string} path The path of the property to get.\n * @param {*} [defaultValue] The value returned for `undefined` resolved values.\n * @returns {*} Returns the resolved value.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': 3 } }] };\n *\n * _.get(object, 'a[0].b.c');\n * // => 3\n *\n * _.get(object, ['a', '0', 'b', 'c']);\n * // => 3\n *\n * _.get(object, 'a.b.c', 'default');\n * // => 'default'\n */\n function get(object, path, defaultValue) {\n var result = object == null ? undefined : baseGet(object, path);\n return result === undefined ? defaultValue : result;\n }\n\n /**\n * Checks if `path` is a direct property of `object`.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The object to query.\n * @param {Array|string} path The path to check.\n * @returns {boolean} Returns `true` if `path` exists, else `false`.\n * @example\n *\n * var object = { 'a': { 'b': 2 } };\n * var other = _.create({ 'a': _.create({ 'b': 2 }) });\n *\n * _.has(object, 'a');\n * // => true\n *\n * _.has(object, 'a.b');\n * // => true\n *\n * _.has(object, ['a', 'b']);\n * // => true\n *\n * _.has(other, 'a');\n * // => false\n */\n function has(object, path) {\n return object != null && hasPath(object, path, baseHas);\n }\n\n /**\n * Checks if `path` is a direct or inherited property of `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The object to query.\n * @param {Array|string} path The path to check.\n * @returns {boolean} Returns `true` if `path` exists, else `false`.\n * @example\n *\n * var object = _.create({ 'a': _.create({ 'b': 2 }) });\n *\n * _.hasIn(object, 'a');\n * // => true\n *\n * _.hasIn(object, 'a.b');\n * // => true\n *\n * _.hasIn(object, ['a', 'b']);\n * // => true\n *\n * _.hasIn(object, 'b');\n * // => false\n */\n function hasIn(object, path) {\n return object != null && hasPath(object, path, baseHasIn);\n }\n\n /**\n * Creates an object composed of the inverted keys and values of `object`.\n * If `object` contains duplicate values, subsequent values overwrite\n * property assignments of previous values.\n *\n * @static\n * @memberOf _\n * @since 0.7.0\n * @category Object\n * @param {Object} object The object to invert.\n * @returns {Object} Returns the new inverted object.\n * @example\n *\n * var object = { 'a': 1, 'b': 2, 'c': 1 };\n *\n * _.invert(object);\n * // => { '1': 'c', '2': 'b' }\n */\n var invert = createInverter(function(result, value, key) {\n if (value != null &&\n typeof value.toString != 'function') {\n value = nativeObjectToString.call(value);\n }\n\n result[value] = key;\n }, constant(identity));\n\n /**\n * This method is like `_.invert` except that the inverted object is generated\n * from the results of running each element of `object` thru `iteratee`. The\n * corresponding inverted value of each inverted key is an array of keys\n * responsible for generating the inverted value. The iteratee is invoked\n * with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.1.0\n * @category Object\n * @param {Object} object The object to invert.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {Object} Returns the new inverted object.\n * @example\n *\n * var object = { 'a': 1, 'b': 2, 'c': 1 };\n *\n * _.invertBy(object);\n * // => { '1': ['a', 'c'], '2': ['b'] }\n *\n * _.invertBy(object, function(value) {\n * return 'group' + value;\n * });\n * // => { 'group1': ['a', 'c'], 'group2': ['b'] }\n */\n var invertBy = createInverter(function(result, value, key) {\n if (value != null &&\n typeof value.toString != 'function') {\n value = nativeObjectToString.call(value);\n }\n\n if (hasOwnProperty.call(result, value)) {\n result[value].push(key);\n } else {\n result[value] = [key];\n }\n }, getIteratee);\n\n /**\n * Invokes the method at `path` of `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The object to query.\n * @param {Array|string} path The path of the method to invoke.\n * @param {...*} [args] The arguments to invoke the method with.\n * @returns {*} Returns the result of the invoked method.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': [1, 2, 3, 4] } }] };\n *\n * _.invoke(object, 'a[0].b.c.slice', 1, 3);\n * // => [2, 3]\n */\n var invoke = baseRest(baseInvoke);\n\n /**\n * Creates an array of the own enumerable property names of `object`.\n *\n * **Note:** Non-object values are coerced to objects. See the\n * [ES spec](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)\n * for more details.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.keys(new Foo);\n * // => ['a', 'b'] (iteration order is not guaranteed)\n *\n * _.keys('hi');\n * // => ['0', '1']\n */\n function keys(object) {\n return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object);\n }\n\n /**\n * Creates an array of the own and inherited enumerable property names of `object`.\n *\n * **Note:** Non-object values are coerced to objects.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.keysIn(new Foo);\n * // => ['a', 'b', 'c'] (iteration order is not guaranteed)\n */\n function keysIn(object) {\n return isArrayLike(object) ? arrayLikeKeys(object, true) : baseKeysIn(object);\n }\n\n /**\n * The opposite of `_.mapValues`; this method creates an object with the\n * same values as `object` and keys generated by running each own enumerable\n * string keyed property of `object` thru `iteratee`. The iteratee is invoked\n * with three arguments: (value, key, object).\n *\n * @static\n * @memberOf _\n * @since 3.8.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Object} Returns the new mapped object.\n * @see _.mapValues\n * @example\n *\n * _.mapKeys({ 'a': 1, 'b': 2 }, function(value, key) {\n * return key + value;\n * });\n * // => { 'a1': 1, 'b2': 2 }\n */\n function mapKeys(object, iteratee) {\n var result = {};\n iteratee = getIteratee(iteratee, 3);\n\n baseForOwn(object, function(value, key, object) {\n baseAssignValue(result, iteratee(value, key, object), value);\n });\n return result;\n }\n\n /**\n * Creates an object with the same keys as `object` and values generated\n * by running each own enumerable string keyed property of `object` thru\n * `iteratee`. The iteratee is invoked with three arguments:\n * (value, key, object).\n *\n * @static\n * @memberOf _\n * @since 2.4.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Object} Returns the new mapped object.\n * @see _.mapKeys\n * @example\n *\n * var users = {\n * 'fred': { 'user': 'fred', 'age': 40 },\n * 'pebbles': { 'user': 'pebbles', 'age': 1 }\n * };\n *\n * _.mapValues(users, function(o) { return o.age; });\n * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)\n *\n * // The `_.property` iteratee shorthand.\n * _.mapValues(users, 'age');\n * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)\n */\n function mapValues(object, iteratee) {\n var result = {};\n iteratee = getIteratee(iteratee, 3);\n\n baseForOwn(object, function(value, key, object) {\n baseAssignValue(result, key, iteratee(value, key, object));\n });\n return result;\n }\n\n /**\n * This method is like `_.assign` except that it recursively merges own and\n * inherited enumerable string keyed properties of source objects into the\n * destination object. Source properties that resolve to `undefined` are\n * skipped if a destination value exists. Array and plain object properties\n * are merged recursively. Other objects and value types are overridden by\n * assignment. Source objects are applied from left to right. Subsequent\n * sources overwrite property assignments of previous sources.\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 0.5.0\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} [sources] The source objects.\n * @returns {Object} Returns `object`.\n * @example\n *\n * var object = {\n * 'a': [{ 'b': 2 }, { 'd': 4 }]\n * };\n *\n * var other = {\n * 'a': [{ 'c': 3 }, { 'e': 5 }]\n * };\n *\n * _.merge(object, other);\n * // => { 'a': [{ 'b': 2, 'c': 3 }, { 'd': 4, 'e': 5 }] }\n */\n var merge = createAssigner(function(object, source, srcIndex) {\n baseMerge(object, source, srcIndex);\n });\n\n /**\n * This method is like `_.merge` except that it accepts `customizer` which\n * is invoked to produce the merged values of the destination and source\n * properties. If `customizer` returns `undefined`, merging is handled by the\n * method instead. The `customizer` is invoked with six arguments:\n * (objValue, srcValue, key, object, source, stack).\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} sources The source objects.\n * @param {Function} customizer The function to customize assigned values.\n * @returns {Object} Returns `object`.\n * @example\n *\n * function customizer(objValue, srcValue) {\n * if (_.isArray(objValue)) {\n * return objValue.concat(srcValue);\n * }\n * }\n *\n * var object = { 'a': [1], 'b': [2] };\n * var other = { 'a': [3], 'b': [4] };\n *\n * _.mergeWith(object, other, customizer);\n * // => { 'a': [1, 3], 'b': [2, 4] }\n */\n var mergeWith = createAssigner(function(object, source, srcIndex, customizer) {\n baseMerge(object, source, srcIndex, customizer);\n });\n\n /**\n * The opposite of `_.pick`; this method creates an object composed of the\n * own and inherited enumerable property paths of `object` that are not omitted.\n *\n * **Note:** This method is considerably slower than `_.pick`.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The source object.\n * @param {...(string|string[])} [paths] The property paths to omit.\n * @returns {Object} Returns the new object.\n * @example\n *\n * var object = { 'a': 1, 'b': '2', 'c': 3 };\n *\n * _.omit(object, ['a', 'c']);\n * // => { 'b': '2' }\n */\n var omit = flatRest(function(object, paths) {\n var result = {};\n if (object == null) {\n return result;\n }\n var isDeep = false;\n paths = arrayMap(paths, function(path) {\n path = castPath(path, object);\n isDeep || (isDeep = path.length > 1);\n return path;\n });\n copyObject(object, getAllKeysIn(object), result);\n if (isDeep) {\n result = baseClone(result, CLONE_DEEP_FLAG | CLONE_FLAT_FLAG | CLONE_SYMBOLS_FLAG, customOmitClone);\n }\n var length = paths.length;\n while (length--) {\n baseUnset(result, paths[length]);\n }\n return result;\n });\n\n /**\n * The opposite of `_.pickBy`; this method creates an object composed of\n * the own and inherited enumerable string keyed properties of `object` that\n * `predicate` doesn't return truthy for. The predicate is invoked with two\n * arguments: (value, key).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The source object.\n * @param {Function} [predicate=_.identity] The function invoked per property.\n * @returns {Object} Returns the new object.\n * @example\n *\n * var object = { 'a': 1, 'b': '2', 'c': 3 };\n *\n * _.omitBy(object, _.isNumber);\n * // => { 'b': '2' }\n */\n function omitBy(object, predicate) {\n return pickBy(object, negate(getIteratee(predicate)));\n }\n\n /**\n * Creates an object composed of the picked `object` properties.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The source object.\n * @param {...(string|string[])} [paths] The property paths to pick.\n * @returns {Object} Returns the new object.\n * @example\n *\n * var object = { 'a': 1, 'b': '2', 'c': 3 };\n *\n * _.pick(object, ['a', 'c']);\n * // => { 'a': 1, 'c': 3 }\n */\n var pick = flatRest(function(object, paths) {\n return object == null ? {} : basePick(object, paths);\n });\n\n /**\n * Creates an object composed of the `object` properties `predicate` returns\n * truthy for. The predicate is invoked with two arguments: (value, key).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The source object.\n * @param {Function} [predicate=_.identity] The function invoked per property.\n * @returns {Object} Returns the new object.\n * @example\n *\n * var object = { 'a': 1, 'b': '2', 'c': 3 };\n *\n * _.pickBy(object, _.isNumber);\n * // => { 'a': 1, 'c': 3 }\n */\n function pickBy(object, predicate) {\n if (object == null) {\n return {};\n }\n var props = arrayMap(getAllKeysIn(object), function(prop) {\n return [prop];\n });\n predicate = getIteratee(predicate);\n return basePickBy(object, props, function(value, path) {\n return predicate(value, path[0]);\n });\n }\n\n /**\n * This method is like `_.get` except that if the resolved value is a\n * function it's invoked with the `this` binding of its parent object and\n * its result is returned.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The object to query.\n * @param {Array|string} path The path of the property to resolve.\n * @param {*} [defaultValue] The value returned for `undefined` resolved values.\n * @returns {*} Returns the resolved value.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c1': 3, 'c2': _.constant(4) } }] };\n *\n * _.result(object, 'a[0].b.c1');\n * // => 3\n *\n * _.result(object, 'a[0].b.c2');\n * // => 4\n *\n * _.result(object, 'a[0].b.c3', 'default');\n * // => 'default'\n *\n * _.result(object, 'a[0].b.c3', _.constant('default'));\n * // => 'default'\n */\n function result(object, path, defaultValue) {\n path = castPath(path, object);\n\n var index = -1,\n length = path.length;\n\n // Ensure the loop is entered when path is empty.\n if (!length) {\n length = 1;\n object = undefined;\n }\n while (++index < length) {\n var value = object == null ? undefined : object[toKey(path[index])];\n if (value === undefined) {\n index = length;\n value = defaultValue;\n }\n object = isFunction(value) ? value.call(object) : value;\n }\n return object;\n }\n\n /**\n * Sets the value at `path` of `object`. If a portion of `path` doesn't exist,\n * it's created. Arrays are created for missing index properties while objects\n * are created for all other missing properties. Use `_.setWith` to customize\n * `path` creation.\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 3.7.0\n * @category Object\n * @param {Object} object The object to modify.\n * @param {Array|string} path The path of the property to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns `object`.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': 3 } }] };\n *\n * _.set(object, 'a[0].b.c', 4);\n * console.log(object.a[0].b.c);\n * // => 4\n *\n * _.set(object, ['x', '0', 'y', 'z'], 5);\n * console.log(object.x[0].y.z);\n * // => 5\n */\n function set(object, path, value) {\n return object == null ? object : baseSet(object, path, value);\n }\n\n /**\n * This method is like `_.set` except that it accepts `customizer` which is\n * invoked to produce the objects of `path`. If `customizer` returns `undefined`\n * path creation is handled by the method instead. The `customizer` is invoked\n * with three arguments: (nsValue, key, nsObject).\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The object to modify.\n * @param {Array|string} path The path of the property to set.\n * @param {*} value The value to set.\n * @param {Function} [customizer] The function to customize assigned values.\n * @returns {Object} Returns `object`.\n * @example\n *\n * var object = {};\n *\n * _.setWith(object, '[0][1]', 'a', Object);\n * // => { '0': { '1': 'a' } }\n */\n function setWith(object, path, value, customizer) {\n customizer = typeof customizer == 'function' ? customizer : undefined;\n return object == null ? object : baseSet(object, path, value, customizer);\n }\n\n /**\n * Creates an array of own enumerable string keyed-value pairs for `object`\n * which can be consumed by `_.fromPairs`. If `object` is a map or set, its\n * entries are returned.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @alias entries\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the key-value pairs.\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.toPairs(new Foo);\n * // => [['a', 1], ['b', 2]] (iteration order is not guaranteed)\n */\n var toPairs = createToPairs(keys);\n\n /**\n * Creates an array of own and inherited enumerable string keyed-value pairs\n * for `object` which can be consumed by `_.fromPairs`. If `object` is a map\n * or set, its entries are returned.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @alias entriesIn\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the key-value pairs.\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.toPairsIn(new Foo);\n * // => [['a', 1], ['b', 2], ['c', 3]] (iteration order is not guaranteed)\n */\n var toPairsIn = createToPairs(keysIn);\n\n /**\n * An alternative to `_.reduce`; this method transforms `object` to a new\n * `accumulator` object which is the result of running each of its own\n * enumerable string keyed properties thru `iteratee`, with each invocation\n * potentially mutating the `accumulator` object. If `accumulator` is not\n * provided, a new object with the same `[[Prototype]]` will be used. The\n * iteratee is invoked with four arguments: (accumulator, value, key, object).\n * Iteratee functions may exit iteration early by explicitly returning `false`.\n *\n * @static\n * @memberOf _\n * @since 1.3.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @param {*} [accumulator] The custom accumulator value.\n * @returns {*} Returns the accumulated value.\n * @example\n *\n * _.transform([2, 3, 4], function(result, n) {\n * result.push(n *= n);\n * return n % 2 == 0;\n * }, []);\n * // => [4, 9]\n *\n * _.transform({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {\n * (result[value] || (result[value] = [])).push(key);\n * }, {});\n * // => { '1': ['a', 'c'], '2': ['b'] }\n */\n function transform(object, iteratee, accumulator) {\n var isArr = isArray(object),\n isArrLike = isArr || isBuffer(object) || isTypedArray(object);\n\n iteratee = getIteratee(iteratee, 4);\n if (accumulator == null) {\n var Ctor = object && object.constructor;\n if (isArrLike) {\n accumulator = isArr ? new Ctor : [];\n }\n else if (isObject(object)) {\n accumulator = isFunction(Ctor) ? baseCreate(getPrototype(object)) : {};\n }\n else {\n accumulator = {};\n }\n }\n (isArrLike ? arrayEach : baseForOwn)(object, function(value, index, object) {\n return iteratee(accumulator, value, index, object);\n });\n return accumulator;\n }\n\n /**\n * Removes the property at `path` of `object`.\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The object to modify.\n * @param {Array|string} path The path of the property to unset.\n * @returns {boolean} Returns `true` if the property is deleted, else `false`.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': 7 } }] };\n * _.unset(object, 'a[0].b.c');\n * // => true\n *\n * console.log(object);\n * // => { 'a': [{ 'b': {} }] };\n *\n * _.unset(object, ['a', '0', 'b', 'c']);\n * // => true\n *\n * console.log(object);\n * // => { 'a': [{ 'b': {} }] };\n */\n function unset(object, path) {\n return object == null ? true : baseUnset(object, path);\n }\n\n /**\n * This method is like `_.set` except that accepts `updater` to produce the\n * value to set. Use `_.updateWith` to customize `path` creation. The `updater`\n * is invoked with one argument: (value).\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.6.0\n * @category Object\n * @param {Object} object The object to modify.\n * @param {Array|string} path The path of the property to set.\n * @param {Function} updater The function to produce the updated value.\n * @returns {Object} Returns `object`.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': 3 } }] };\n *\n * _.update(object, 'a[0].b.c', function(n) { return n * n; });\n * console.log(object.a[0].b.c);\n * // => 9\n *\n * _.update(object, 'x[0].y.z', function(n) { return n ? n + 1 : 0; });\n * console.log(object.x[0].y.z);\n * // => 0\n */\n function update(object, path, updater) {\n return object == null ? object : baseUpdate(object, path, castFunction(updater));\n }\n\n /**\n * This method is like `_.update` except that it accepts `customizer` which is\n * invoked to produce the objects of `path`. If `customizer` returns `undefined`\n * path creation is handled by the method instead. The `customizer` is invoked\n * with three arguments: (nsValue, key, nsObject).\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.6.0\n * @category Object\n * @param {Object} object The object to modify.\n * @param {Array|string} path The path of the property to set.\n * @param {Function} updater The function to produce the updated value.\n * @param {Function} [customizer] The function to customize assigned values.\n * @returns {Object} Returns `object`.\n * @example\n *\n * var object = {};\n *\n * _.updateWith(object, '[0][1]', _.constant('a'), Object);\n * // => { '0': { '1': 'a' } }\n */\n function updateWith(object, path, updater, customizer) {\n customizer = typeof customizer == 'function' ? customizer : undefined;\n return object == null ? object : baseUpdate(object, path, castFunction(updater), customizer);\n }\n\n /**\n * Creates an array of the own enumerable string keyed property values of `object`.\n *\n * **Note:** Non-object values are coerced to objects.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property values.\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.values(new Foo);\n * // => [1, 2] (iteration order is not guaranteed)\n *\n * _.values('hi');\n * // => ['h', 'i']\n */\n function values(object) {\n return object == null ? [] : baseValues(object, keys(object));\n }\n\n /**\n * Creates an array of the own and inherited enumerable string keyed property\n * values of `object`.\n *\n * **Note:** Non-object values are coerced to objects.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property values.\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.valuesIn(new Foo);\n * // => [1, 2, 3] (iteration order is not guaranteed)\n */\n function valuesIn(object) {\n return object == null ? [] : baseValues(object, keysIn(object));\n }\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Clamps `number` within the inclusive `lower` and `upper` bounds.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Number\n * @param {number} number The number to clamp.\n * @param {number} [lower] The lower bound.\n * @param {number} upper The upper bound.\n * @returns {number} Returns the clamped number.\n * @example\n *\n * _.clamp(-10, -5, 5);\n * // => -5\n *\n * _.clamp(10, -5, 5);\n * // => 5\n */\n function clamp(number, lower, upper) {\n if (upper === undefined) {\n upper = lower;\n lower = undefined;\n }\n if (upper !== undefined) {\n upper = toNumber(upper);\n upper = upper === upper ? upper : 0;\n }\n if (lower !== undefined) {\n lower = toNumber(lower);\n lower = lower === lower ? lower : 0;\n }\n return baseClamp(toNumber(number), lower, upper);\n }\n\n /**\n * Checks if `n` is between `start` and up to, but not including, `end`. If\n * `end` is not specified, it's set to `start` with `start` then set to `0`.\n * If `start` is greater than `end` the params are swapped to support\n * negative ranges.\n *\n * @static\n * @memberOf _\n * @since 3.3.0\n * @category Number\n * @param {number} number The number to check.\n * @param {number} [start=0] The start of the range.\n * @param {number} end The end of the range.\n * @returns {boolean} Returns `true` if `number` is in the range, else `false`.\n * @see _.range, _.rangeRight\n * @example\n *\n * _.inRange(3, 2, 4);\n * // => true\n *\n * _.inRange(4, 8);\n * // => true\n *\n * _.inRange(4, 2);\n * // => false\n *\n * _.inRange(2, 2);\n * // => false\n *\n * _.inRange(1.2, 2);\n * // => true\n *\n * _.inRange(5.2, 4);\n * // => false\n *\n * _.inRange(-3, -2, -6);\n * // => true\n */\n function inRange(number, start, end) {\n start = toFinite(start);\n if (end === undefined) {\n end = start;\n start = 0;\n } else {\n end = toFinite(end);\n }\n number = toNumber(number);\n return baseInRange(number, start, end);\n }\n\n /**\n * Produces a random number between the inclusive `lower` and `upper` bounds.\n * If only one argument is provided a number between `0` and the given number\n * is returned. If `floating` is `true`, or either `lower` or `upper` are\n * floats, a floating-point number is returned instead of an integer.\n *\n * **Note:** JavaScript follows the IEEE-754 standard for resolving\n * floating-point values which can produce unexpected results.\n *\n * @static\n * @memberOf _\n * @since 0.7.0\n * @category Number\n * @param {number} [lower=0] The lower bound.\n * @param {number} [upper=1] The upper bound.\n * @param {boolean} [floating] Specify returning a floating-point number.\n * @returns {number} Returns the random number.\n * @example\n *\n * _.random(0, 5);\n * // => an integer between 0 and 5\n *\n * _.random(5);\n * // => also an integer between 0 and 5\n *\n * _.random(5, true);\n * // => a floating-point number between 0 and 5\n *\n * _.random(1.2, 5.2);\n * // => a floating-point number between 1.2 and 5.2\n */\n function random(lower, upper, floating) {\n if (floating && typeof floating != 'boolean' && isIterateeCall(lower, upper, floating)) {\n upper = floating = undefined;\n }\n if (floating === undefined) {\n if (typeof upper == 'boolean') {\n floating = upper;\n upper = undefined;\n }\n else if (typeof lower == 'boolean') {\n floating = lower;\n lower = undefined;\n }\n }\n if (lower === undefined && upper === undefined) {\n lower = 0;\n upper = 1;\n }\n else {\n lower = toFinite(lower);\n if (upper === undefined) {\n upper = lower;\n lower = 0;\n } else {\n upper = toFinite(upper);\n }\n }\n if (lower > upper) {\n var temp = lower;\n lower = upper;\n upper = temp;\n }\n if (floating || lower % 1 || upper % 1) {\n var rand = nativeRandom();\n return nativeMin(lower + (rand * (upper - lower + freeParseFloat('1e-' + ((rand + '').length - 1)))), upper);\n }\n return baseRandom(lower, upper);\n }\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Converts `string` to [camel case](https://en.wikipedia.org/wiki/CamelCase).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to convert.\n * @returns {string} Returns the camel cased string.\n * @example\n *\n * _.camelCase('Foo Bar');\n * // => 'fooBar'\n *\n * _.camelCase('--foo-bar--');\n * // => 'fooBar'\n *\n * _.camelCase('__FOO_BAR__');\n * // => 'fooBar'\n */\n var camelCase = createCompounder(function(result, word, index) {\n word = word.toLowerCase();\n return result + (index ? capitalize(word) : word);\n });\n\n /**\n * Converts the first character of `string` to upper case and the remaining\n * to lower case.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to capitalize.\n * @returns {string} Returns the capitalized string.\n * @example\n *\n * _.capitalize('FRED');\n * // => 'Fred'\n */\n function capitalize(string) {\n return upperFirst(toString(string).toLowerCase());\n }\n\n /**\n * Deburrs `string` by converting\n * [Latin-1 Supplement](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table)\n * and [Latin Extended-A](https://en.wikipedia.org/wiki/Latin_Extended-A)\n * letters to basic Latin letters and removing\n * [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to deburr.\n * @returns {string} Returns the deburred string.\n * @example\n *\n * _.deburr('déjà vu');\n * // => 'deja vu'\n */\n function deburr(string) {\n string = toString(string);\n return string && string.replace(reLatin, deburrLetter).replace(reComboMark, '');\n }\n\n /**\n * Checks if `string` ends with the given target string.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to inspect.\n * @param {string} [target] The string to search for.\n * @param {number} [position=string.length] The position to search up to.\n * @returns {boolean} Returns `true` if `string` ends with `target`,\n * else `false`.\n * @example\n *\n * _.endsWith('abc', 'c');\n * // => true\n *\n * _.endsWith('abc', 'b');\n * // => false\n *\n * _.endsWith('abc', 'b', 2);\n * // => true\n */\n function endsWith(string, target, position) {\n string = toString(string);\n target = baseToString(target);\n\n var length = string.length;\n position = position === undefined\n ? length\n : baseClamp(toInteger(position), 0, length);\n\n var end = position;\n position -= target.length;\n return position >= 0 && string.slice(position, end) == target;\n }\n\n /**\n * Converts the characters \"&\", \"<\", \">\", '\"', and \"'\" in `string` to their\n * corresponding HTML entities.\n *\n * **Note:** No other characters are escaped. To escape additional\n * characters use a third-party library like [_he_](https://mths.be/he).\n *\n * Though the \">\" character is escaped for symmetry, characters like\n * \">\" and \"/\" don't need escaping in HTML and have no special meaning\n * unless they're part of a tag or unquoted attribute value. See\n * [Mathias Bynens's article](https://mathiasbynens.be/notes/ambiguous-ampersands)\n * (under \"semi-related fun fact\") for more details.\n *\n * When working with HTML you should always\n * [quote attribute values](http://wonko.com/post/html-escaping) to reduce\n * XSS vectors.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category String\n * @param {string} [string=''] The string to escape.\n * @returns {string} Returns the escaped string.\n * @example\n *\n * _.escape('fred, barney, & pebbles');\n * // => 'fred, barney, & pebbles'\n */\n function escape(string) {\n string = toString(string);\n return (string && reHasUnescapedHtml.test(string))\n ? string.replace(reUnescapedHtml, escapeHtmlChar)\n : string;\n }\n\n /**\n * Escapes the `RegExp` special characters \"^\", \"$\", \"\\\", \".\", \"*\", \"+\",\n * \"?\", \"(\", \")\", \"[\", \"]\", \"{\", \"}\", and \"|\" in `string`.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to escape.\n * @returns {string} Returns the escaped string.\n * @example\n *\n * _.escapeRegExp('[lodash](https://lodash.com/)');\n * // => '\\[lodash\\]\\(https://lodash\\.com/\\)'\n */\n function escapeRegExp(string) {\n string = toString(string);\n return (string && reHasRegExpChar.test(string))\n ? string.replace(reRegExpChar, '\\\\$&')\n : string;\n }\n\n /**\n * Converts `string` to\n * [kebab case](https://en.wikipedia.org/wiki/Letter_case#Special_case_styles).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to convert.\n * @returns {string} Returns the kebab cased string.\n * @example\n *\n * _.kebabCase('Foo Bar');\n * // => 'foo-bar'\n *\n * _.kebabCase('fooBar');\n * // => 'foo-bar'\n *\n * _.kebabCase('__FOO_BAR__');\n * // => 'foo-bar'\n */\n var kebabCase = createCompounder(function(result, word, index) {\n return result + (index ? '-' : '') + word.toLowerCase();\n });\n\n /**\n * Converts `string`, as space separated words, to lower case.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category String\n * @param {string} [string=''] The string to convert.\n * @returns {string} Returns the lower cased string.\n * @example\n *\n * _.lowerCase('--Foo-Bar--');\n * // => 'foo bar'\n *\n * _.lowerCase('fooBar');\n * // => 'foo bar'\n *\n * _.lowerCase('__FOO_BAR__');\n * // => 'foo bar'\n */\n var lowerCase = createCompounder(function(result, word, index) {\n return result + (index ? ' ' : '') + word.toLowerCase();\n });\n\n /**\n * Converts the first character of `string` to lower case.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category String\n * @param {string} [string=''] The string to convert.\n * @returns {string} Returns the converted string.\n * @example\n *\n * _.lowerFirst('Fred');\n * // => 'fred'\n *\n * _.lowerFirst('FRED');\n * // => 'fRED'\n */\n var lowerFirst = createCaseFirst('toLowerCase');\n\n /**\n * Pads `string` on the left and right sides if it's shorter than `length`.\n * Padding characters are truncated if they can't be evenly divided by `length`.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to pad.\n * @param {number} [length=0] The padding length.\n * @param {string} [chars=' '] The string used as padding.\n * @returns {string} Returns the padded string.\n * @example\n *\n * _.pad('abc', 8);\n * // => ' abc '\n *\n * _.pad('abc', 8, '_-');\n * // => '_-abc_-_'\n *\n * _.pad('abc', 3);\n * // => 'abc'\n */\n function pad(string, length, chars) {\n string = toString(string);\n length = toInteger(length);\n\n var strLength = length ? stringSize(string) : 0;\n if (!length || strLength >= length) {\n return string;\n }\n var mid = (length - strLength) / 2;\n return (\n createPadding(nativeFloor(mid), chars) +\n string +\n createPadding(nativeCeil(mid), chars)\n );\n }\n\n /**\n * Pads `string` on the right side if it's shorter than `length`. Padding\n * characters are truncated if they exceed `length`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category String\n * @param {string} [string=''] The string to pad.\n * @param {number} [length=0] The padding length.\n * @param {string} [chars=' '] The string used as padding.\n * @returns {string} Returns the padded string.\n * @example\n *\n * _.padEnd('abc', 6);\n * // => 'abc '\n *\n * _.padEnd('abc', 6, '_-');\n * // => 'abc_-_'\n *\n * _.padEnd('abc', 3);\n * // => 'abc'\n */\n function padEnd(string, length, chars) {\n string = toString(string);\n length = toInteger(length);\n\n var strLength = length ? stringSize(string) : 0;\n return (length && strLength < length)\n ? (string + createPadding(length - strLength, chars))\n : string;\n }\n\n /**\n * Pads `string` on the left side if it's shorter than `length`. Padding\n * characters are truncated if they exceed `length`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category String\n * @param {string} [string=''] The string to pad.\n * @param {number} [length=0] The padding length.\n * @param {string} [chars=' '] The string used as padding.\n * @returns {string} Returns the padded string.\n * @example\n *\n * _.padStart('abc', 6);\n * // => ' abc'\n *\n * _.padStart('abc', 6, '_-');\n * // => '_-_abc'\n *\n * _.padStart('abc', 3);\n * // => 'abc'\n */\n function padStart(string, length, chars) {\n string = toString(string);\n length = toInteger(length);\n\n var strLength = length ? stringSize(string) : 0;\n return (length && strLength < length)\n ? (createPadding(length - strLength, chars) + string)\n : string;\n }\n\n /**\n * Converts `string` to an integer of the specified radix. If `radix` is\n * `undefined` or `0`, a `radix` of `10` is used unless `value` is a\n * hexadecimal, in which case a `radix` of `16` is used.\n *\n * **Note:** This method aligns with the\n * [ES5 implementation](https://es5.github.io/#x15.1.2.2) of `parseInt`.\n *\n * @static\n * @memberOf _\n * @since 1.1.0\n * @category String\n * @param {string} string The string to convert.\n * @param {number} [radix=10] The radix to interpret `value` by.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {number} Returns the converted integer.\n * @example\n *\n * _.parseInt('08');\n * // => 8\n *\n * _.map(['6', '08', '10'], _.parseInt);\n * // => [6, 8, 10]\n */\n function parseInt(string, radix, guard) {\n if (guard || radix == null) {\n radix = 0;\n } else if (radix) {\n radix = +radix;\n }\n return nativeParseInt(toString(string).replace(reTrimStart, ''), radix || 0);\n }\n\n /**\n * Repeats the given string `n` times.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to repeat.\n * @param {number} [n=1] The number of times to repeat the string.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {string} Returns the repeated string.\n * @example\n *\n * _.repeat('*', 3);\n * // => '***'\n *\n * _.repeat('abc', 2);\n * // => 'abcabc'\n *\n * _.repeat('abc', 0);\n * // => ''\n */\n function repeat(string, n, guard) {\n if ((guard ? isIterateeCall(string, n, guard) : n === undefined)) {\n n = 1;\n } else {\n n = toInteger(n);\n }\n return baseRepeat(toString(string), n);\n }\n\n /**\n * Replaces matches for `pattern` in `string` with `replacement`.\n *\n * **Note:** This method is based on\n * [`String#replace`](https://mdn.io/String/replace).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category String\n * @param {string} [string=''] The string to modify.\n * @param {RegExp|string} pattern The pattern to replace.\n * @param {Function|string} replacement The match replacement.\n * @returns {string} Returns the modified string.\n * @example\n *\n * _.replace('Hi Fred', 'Fred', 'Barney');\n * // => 'Hi Barney'\n */\n function replace() {\n var args = arguments,\n string = toString(args[0]);\n\n return args.length < 3 ? string : string.replace(args[1], args[2]);\n }\n\n /**\n * Converts `string` to\n * [snake case](https://en.wikipedia.org/wiki/Snake_case).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to convert.\n * @returns {string} Returns the snake cased string.\n * @example\n *\n * _.snakeCase('Foo Bar');\n * // => 'foo_bar'\n *\n * _.snakeCase('fooBar');\n * // => 'foo_bar'\n *\n * _.snakeCase('--FOO-BAR--');\n * // => 'foo_bar'\n */\n var snakeCase = createCompounder(function(result, word, index) {\n return result + (index ? '_' : '') + word.toLowerCase();\n });\n\n /**\n * Splits `string` by `separator`.\n *\n * **Note:** This method is based on\n * [`String#split`](https://mdn.io/String/split).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category String\n * @param {string} [string=''] The string to split.\n * @param {RegExp|string} separator The separator pattern to split by.\n * @param {number} [limit] The length to truncate results to.\n * @returns {Array} Returns the string segments.\n * @example\n *\n * _.split('a-b-c', '-', 2);\n * // => ['a', 'b']\n */\n function split(string, separator, limit) {\n if (limit && typeof limit != 'number' && isIterateeCall(string, separator, limit)) {\n separator = limit = undefined;\n }\n limit = limit === undefined ? MAX_ARRAY_LENGTH : limit >>> 0;\n if (!limit) {\n return [];\n }\n string = toString(string);\n if (string && (\n typeof separator == 'string' ||\n (separator != null && !isRegExp(separator))\n )) {\n separator = baseToString(separator);\n if (!separator && hasUnicode(string)) {\n return castSlice(stringToArray(string), 0, limit);\n }\n }\n return string.split(separator, limit);\n }\n\n /**\n * Converts `string` to\n * [start case](https://en.wikipedia.org/wiki/Letter_case#Stylistic_or_specialised_usage).\n *\n * @static\n * @memberOf _\n * @since 3.1.0\n * @category String\n * @param {string} [string=''] The string to convert.\n * @returns {string} Returns the start cased string.\n * @example\n *\n * _.startCase('--foo-bar--');\n * // => 'Foo Bar'\n *\n * _.startCase('fooBar');\n * // => 'Foo Bar'\n *\n * _.startCase('__FOO_BAR__');\n * // => 'FOO BAR'\n */\n var startCase = createCompounder(function(result, word, index) {\n return result + (index ? ' ' : '') + upperFirst(word);\n });\n\n /**\n * Checks if `string` starts with the given target string.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to inspect.\n * @param {string} [target] The string to search for.\n * @param {number} [position=0] The position to search from.\n * @returns {boolean} Returns `true` if `string` starts with `target`,\n * else `false`.\n * @example\n *\n * _.startsWith('abc', 'a');\n * // => true\n *\n * _.startsWith('abc', 'b');\n * // => false\n *\n * _.startsWith('abc', 'b', 1);\n * // => true\n */\n function startsWith(string, target, position) {\n string = toString(string);\n position = position == null\n ? 0\n : baseClamp(toInteger(position), 0, string.length);\n\n target = baseToString(target);\n return string.slice(position, position + target.length) == target;\n }\n\n /**\n * Creates a compiled template function that can interpolate data properties\n * in \"interpolate\" delimiters, HTML-escape interpolated data properties in\n * \"escape\" delimiters, and execute JavaScript in \"evaluate\" delimiters. Data\n * properties may be accessed as free variables in the template. If a setting\n * object is given, it takes precedence over `_.templateSettings` values.\n *\n * **Note:** In the development build `_.template` utilizes\n * [sourceURLs](http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl)\n * for easier debugging.\n *\n * For more information on precompiling templates see\n * [lodash's custom builds documentation](https://lodash.com/custom-builds).\n *\n * For more information on Chrome extension sandboxes see\n * [Chrome's extensions documentation](https://developer.chrome.com/extensions/sandboxingEval).\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category String\n * @param {string} [string=''] The template string.\n * @param {Object} [options={}] The options object.\n * @param {RegExp} [options.escape=_.templateSettings.escape]\n * The HTML \"escape\" delimiter.\n * @param {RegExp} [options.evaluate=_.templateSettings.evaluate]\n * The \"evaluate\" delimiter.\n * @param {Object} [options.imports=_.templateSettings.imports]\n * An object to import into the template as free variables.\n * @param {RegExp} [options.interpolate=_.templateSettings.interpolate]\n * The \"interpolate\" delimiter.\n * @param {string} [options.sourceURL='lodash.templateSources[n]']\n * The sourceURL of the compiled template.\n * @param {string} [options.variable='obj']\n * The data object variable name.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Function} Returns the compiled template function.\n * @example\n *\n * // Use the \"interpolate\" delimiter to create a compiled template.\n * var compiled = _.template('hello <%= user %>!');\n * compiled({ 'user': 'fred' });\n * // => 'hello fred!'\n *\n * // Use the HTML \"escape\" delimiter to escape data property values.\n * var compiled = _.template('<%- value %>');\n * compiled({ 'value': '\n","import {\n\tEventDispatcher,\n\tMOUSE,\n\tQuaternion,\n\tSpherical,\n\tTOUCH,\n\tVector2,\n\tVector3,\n\tPlane,\n\tRay,\n\tMathUtils\n} from 'three';\n\n// OrbitControls performs orbiting, dollying (zooming), and panning.\n// Unlike TrackballControls, it maintains the \"up\" direction object.up (+Y by default).\n//\n// Orbit - left mouse / touch: one-finger move\n// Zoom - middle mouse, or mousewheel / touch: two-finger spread or squish\n// Pan - right mouse, or left mouse + ctrl/meta/shiftKey, or arrow keys / touch: two-finger move\n\nconst _changeEvent = { type: 'change' };\nconst _startEvent = { type: 'start' };\nconst _endEvent = { type: 'end' };\nconst _ray = new Ray();\nconst _plane = new Plane();\nconst TILT_LIMIT = Math.cos( 70 * MathUtils.DEG2RAD );\n\nclass OrbitControls extends EventDispatcher {\n\n\tconstructor( object, domElement ) {\n\n\t\tsuper();\n\n\t\tthis.object = object;\n\t\tthis.domElement = domElement;\n\t\tthis.domElement.style.touchAction = 'none'; // disable touch scroll\n\n\t\t// Set to false to disable this control\n\t\tthis.enabled = true;\n\n\t\t// \"target\" sets the location of focus, where the object orbits around\n\t\tthis.target = new Vector3();\n\n\t\t// Sets the 3D cursor (similar to Blender), from which the maxTargetRadius takes effect\n\t\tthis.cursor = new Vector3();\n\n\t\t// How far you can dolly in and out ( PerspectiveCamera only )\n\t\tthis.minDistance = 0;\n\t\tthis.maxDistance = Infinity;\n\n\t\t// How far you can zoom in and out ( OrthographicCamera only )\n\t\tthis.minZoom = 0;\n\t\tthis.maxZoom = Infinity;\n\n\t\t// Limit camera target within a spherical area around the cursor\n\t\tthis.minTargetRadius = 0;\n\t\tthis.maxTargetRadius = Infinity;\n\n\t\t// How far you can orbit vertically, upper and lower limits.\n\t\t// Range is 0 to Math.PI radians.\n\t\tthis.minPolarAngle = 0; // radians\n\t\tthis.maxPolarAngle = Math.PI; // radians\n\n\t\t// How far you can orbit horizontally, upper and lower limits.\n\t\t// If set, the interval [ min, max ] must be a sub-interval of [ - 2 PI, 2 PI ], with ( max - min < 2 PI )\n\t\tthis.minAzimuthAngle = - Infinity; // radians\n\t\tthis.maxAzimuthAngle = Infinity; // radians\n\n\t\t// Set to true to enable damping (inertia)\n\t\t// If damping is enabled, you must call controls.update() in your animation loop\n\t\tthis.enableDamping = false;\n\t\tthis.dampingFactor = 0.05;\n\n\t\t// This option actually enables dollying in and out; left as \"zoom\" for backwards compatibility.\n\t\t// Set to false to disable zooming\n\t\tthis.enableZoom = true;\n\t\tthis.zoomSpeed = 1.0;\n\n\t\t// Set to false to disable rotating\n\t\tthis.enableRotate = true;\n\t\tthis.rotateSpeed = 1.0;\n\n\t\t// Set to false to disable panning\n\t\tthis.enablePan = true;\n\t\tthis.panSpeed = 1.0;\n\t\tthis.screenSpacePanning = true; // if false, pan orthogonal to world-space direction camera.up\n\t\tthis.keyPanSpeed = 7.0;\t// pixels moved per arrow key push\n\t\tthis.zoomToCursor = false;\n\n\t\t// Set to true to automatically rotate around the target\n\t\t// If auto-rotate is enabled, you must call controls.update() in your animation loop\n\t\tthis.autoRotate = false;\n\t\tthis.autoRotateSpeed = 2.0; // 30 seconds per orbit when fps is 60\n\n\t\t// The four arrow keys\n\t\tthis.keys = { LEFT: 'ArrowLeft', UP: 'ArrowUp', RIGHT: 'ArrowRight', BOTTOM: 'ArrowDown' };\n\n\t\t// Mouse buttons\n\t\tthis.mouseButtons = { LEFT: MOUSE.ROTATE, MIDDLE: MOUSE.DOLLY, RIGHT: MOUSE.PAN };\n\n\t\t// Touch fingers\n\t\tthis.touches = { ONE: TOUCH.ROTATE, TWO: TOUCH.DOLLY_PAN };\n\n\t\t// for reset\n\t\tthis.target0 = this.target.clone();\n\t\tthis.position0 = this.object.position.clone();\n\t\tthis.zoom0 = this.object.zoom;\n\n\t\t// the target DOM element for key events\n\t\tthis._domElementKeyEvents = null;\n\n\t\t//\n\t\t// public methods\n\t\t//\n\n\t\tthis.getPolarAngle = function () {\n\n\t\t\treturn spherical.phi;\n\n\t\t};\n\n\t\tthis.getAzimuthalAngle = function () {\n\n\t\t\treturn spherical.theta;\n\n\t\t};\n\n\t\tthis.getDistance = function () {\n\n\t\t\treturn this.object.position.distanceTo( this.target );\n\n\t\t};\n\n\t\tthis.listenToKeyEvents = function ( domElement ) {\n\n\t\t\tdomElement.addEventListener( 'keydown', onKeyDown );\n\t\t\tthis._domElementKeyEvents = domElement;\n\n\t\t};\n\n\t\tthis.stopListenToKeyEvents = function () {\n\n\t\t\tthis._domElementKeyEvents.removeEventListener( 'keydown', onKeyDown );\n\t\t\tthis._domElementKeyEvents = null;\n\n\t\t};\n\n\t\tthis.saveState = function () {\n\n\t\t\tscope.target0.copy( scope.target );\n\t\t\tscope.position0.copy( scope.object.position );\n\t\t\tscope.zoom0 = scope.object.zoom;\n\n\t\t};\n\n\t\tthis.reset = function () {\n\n\t\t\tscope.target.copy( scope.target0 );\n\t\t\tscope.object.position.copy( scope.position0 );\n\t\t\tscope.object.zoom = scope.zoom0;\n\n\t\t\tscope.object.updateProjectionMatrix();\n\t\t\tscope.dispatchEvent( _changeEvent );\n\n\t\t\tscope.update();\n\n\t\t\tstate = STATE.NONE;\n\n\t\t};\n\n\t\t// this method is exposed, but perhaps it would be better if we can make it private...\n\t\tthis.update = function () {\n\n\t\t\tconst offset = new Vector3();\n\n\t\t\t// so camera.up is the orbit axis\n\t\t\tconst quat = new Quaternion().setFromUnitVectors( object.up, new Vector3( 0, 1, 0 ) );\n\t\t\tconst quatInverse = quat.clone().invert();\n\n\t\t\tconst lastPosition = new Vector3();\n\t\t\tconst lastQuaternion = new Quaternion();\n\t\t\tconst lastTargetPosition = new Vector3();\n\n\t\t\tconst twoPI = 2 * Math.PI;\n\n\t\t\treturn function update( deltaTime = null ) {\n\n\t\t\t\tconst position = scope.object.position;\n\n\t\t\t\toffset.copy( position ).sub( scope.target );\n\n\t\t\t\t// rotate offset to \"y-axis-is-up\" space\n\t\t\t\toffset.applyQuaternion( quat );\n\n\t\t\t\t// angle from z-axis around y-axis\n\t\t\t\tspherical.setFromVector3( offset );\n\n\t\t\t\tif ( scope.autoRotate && state === STATE.NONE ) {\n\n\t\t\t\t\trotateLeft( getAutoRotationAngle( deltaTime ) );\n\n\t\t\t\t}\n\n\t\t\t\tif ( scope.enableDamping ) {\n\n\t\t\t\t\tspherical.theta += sphericalDelta.theta * scope.dampingFactor;\n\t\t\t\t\tspherical.phi += sphericalDelta.phi * scope.dampingFactor;\n\n\t\t\t\t} else {\n\n\t\t\t\t\tspherical.theta += sphericalDelta.theta;\n\t\t\t\t\tspherical.phi += sphericalDelta.phi;\n\n\t\t\t\t}\n\n\t\t\t\t// restrict theta to be between desired limits\n\n\t\t\t\tlet min = scope.minAzimuthAngle;\n\t\t\t\tlet max = scope.maxAzimuthAngle;\n\n\t\t\t\tif ( isFinite( min ) && isFinite( max ) ) {\n\n\t\t\t\t\tif ( min < - Math.PI ) min += twoPI; else if ( min > Math.PI ) min -= twoPI;\n\n\t\t\t\t\tif ( max < - Math.PI ) max += twoPI; else if ( max > Math.PI ) max -= twoPI;\n\n\t\t\t\t\tif ( min <= max ) {\n\n\t\t\t\t\t\tspherical.theta = Math.max( min, Math.min( max, spherical.theta ) );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tspherical.theta = ( spherical.theta > ( min + max ) / 2 ) ?\n\t\t\t\t\t\t\tMath.max( min, spherical.theta ) :\n\t\t\t\t\t\t\tMath.min( max, spherical.theta );\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\t// restrict phi to be between desired limits\n\t\t\t\tspherical.phi = Math.max( scope.minPolarAngle, Math.min( scope.maxPolarAngle, spherical.phi ) );\n\n\t\t\t\tspherical.makeSafe();\n\n\n\t\t\t\t// move target to panned location\n\n\t\t\t\tif ( scope.enableDamping === true ) {\n\n\t\t\t\t\tscope.target.addScaledVector( panOffset, scope.dampingFactor );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tscope.target.add( panOffset );\n\n\t\t\t\t}\n\n\t\t\t\t// Limit the target distance from the cursor to create a sphere around the center of interest\n\t\t\t\tscope.target.sub( scope.cursor );\n\t\t\t\tscope.target.clampLength( scope.minTargetRadius, scope.maxTargetRadius );\n\t\t\t\tscope.target.add( scope.cursor );\n\n\t\t\t\tlet zoomChanged = false;\n\t\t\t\t// adjust the camera position based on zoom only if we're not zooming to the cursor or if it's an ortho camera\n\t\t\t\t// we adjust zoom later in these cases\n\t\t\t\tif ( scope.zoomToCursor && performCursorZoom || scope.object.isOrthographicCamera ) {\n\n\t\t\t\t\tspherical.radius = clampDistance( spherical.radius );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tconst prevRadius = spherical.radius;\n\t\t\t\t\tspherical.radius = clampDistance( spherical.radius * scale );\n\t\t\t\t\tzoomChanged = prevRadius != spherical.radius;\n\n\t\t\t\t}\n\n\t\t\t\toffset.setFromSpherical( spherical );\n\n\t\t\t\t// rotate offset back to \"camera-up-vector-is-up\" space\n\t\t\t\toffset.applyQuaternion( quatInverse );\n\n\t\t\t\tposition.copy( scope.target ).add( offset );\n\n\t\t\t\tscope.object.lookAt( scope.target );\n\n\t\t\t\tif ( scope.enableDamping === true ) {\n\n\t\t\t\t\tsphericalDelta.theta *= ( 1 - scope.dampingFactor );\n\t\t\t\t\tsphericalDelta.phi *= ( 1 - scope.dampingFactor );\n\n\t\t\t\t\tpanOffset.multiplyScalar( 1 - scope.dampingFactor );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tsphericalDelta.set( 0, 0, 0 );\n\n\t\t\t\t\tpanOffset.set( 0, 0, 0 );\n\n\t\t\t\t}\n\n\t\t\t\t// adjust camera position\n\t\t\t\tif ( scope.zoomToCursor && performCursorZoom ) {\n\n\t\t\t\t\tlet newRadius = null;\n\t\t\t\t\tif ( scope.object.isPerspectiveCamera ) {\n\n\t\t\t\t\t\t// move the camera down the pointer ray\n\t\t\t\t\t\t// this method avoids floating point error\n\t\t\t\t\t\tconst prevRadius = offset.length();\n\t\t\t\t\t\tnewRadius = clampDistance( prevRadius * scale );\n\n\t\t\t\t\t\tconst radiusDelta = prevRadius - newRadius;\n\t\t\t\t\t\tscope.object.position.addScaledVector( dollyDirection, radiusDelta );\n\t\t\t\t\t\tscope.object.updateMatrixWorld();\n\n\t\t\t\t\t\tzoomChanged = !! radiusDelta;\n\n\t\t\t\t\t} else if ( scope.object.isOrthographicCamera ) {\n\n\t\t\t\t\t\t// adjust the ortho camera position based on zoom changes\n\t\t\t\t\t\tconst mouseBefore = new Vector3( mouse.x, mouse.y, 0 );\n\t\t\t\t\t\tmouseBefore.unproject( scope.object );\n\n\t\t\t\t\t\tconst prevZoom = scope.object.zoom;\n\t\t\t\t\t\tscope.object.zoom = Math.max( scope.minZoom, Math.min( scope.maxZoom, scope.object.zoom / scale ) );\n\t\t\t\t\t\tscope.object.updateProjectionMatrix();\n\n\t\t\t\t\t\tzoomChanged = prevZoom !== scope.object.zoom;\n\n\t\t\t\t\t\tconst mouseAfter = new Vector3( mouse.x, mouse.y, 0 );\n\t\t\t\t\t\tmouseAfter.unproject( scope.object );\n\n\t\t\t\t\t\tscope.object.position.sub( mouseAfter ).add( mouseBefore );\n\t\t\t\t\t\tscope.object.updateMatrixWorld();\n\n\t\t\t\t\t\tnewRadius = offset.length();\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tconsole.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - zoom to cursor disabled.' );\n\t\t\t\t\t\tscope.zoomToCursor = false;\n\n\t\t\t\t\t}\n\n\t\t\t\t\t// handle the placement of the target\n\t\t\t\t\tif ( newRadius !== null ) {\n\n\t\t\t\t\t\tif ( this.screenSpacePanning ) {\n\n\t\t\t\t\t\t\t// position the orbit target in front of the new camera position\n\t\t\t\t\t\t\tscope.target.set( 0, 0, - 1 )\n\t\t\t\t\t\t\t\t.transformDirection( scope.object.matrix )\n\t\t\t\t\t\t\t\t.multiplyScalar( newRadius )\n\t\t\t\t\t\t\t\t.add( scope.object.position );\n\n\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t// get the ray and translation plane to compute target\n\t\t\t\t\t\t\t_ray.origin.copy( scope.object.position );\n\t\t\t\t\t\t\t_ray.direction.set( 0, 0, - 1 ).transformDirection( scope.object.matrix );\n\n\t\t\t\t\t\t\t// if the camera is 20 degrees above the horizon then don't adjust the focus target to avoid\n\t\t\t\t\t\t\t// extremely large values\n\t\t\t\t\t\t\tif ( Math.abs( scope.object.up.dot( _ray.direction ) ) < TILT_LIMIT ) {\n\n\t\t\t\t\t\t\t\tobject.lookAt( scope.target );\n\n\t\t\t\t\t\t\t} else {\n\n\t\t\t\t\t\t\t\t_plane.setFromNormalAndCoplanarPoint( scope.object.up, scope.target );\n\t\t\t\t\t\t\t\t_ray.intersectPlane( _plane, scope.target );\n\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t}\n\n\t\t\t\t\t}\n\n\t\t\t\t} else if ( scope.object.isOrthographicCamera ) {\n\n\t\t\t\t\tconst prevZoom = scope.object.zoom;\n\t\t\t\t\tscope.object.zoom = Math.max( scope.minZoom, Math.min( scope.maxZoom, scope.object.zoom / scale ) );\n\n\t\t\t\t\tif ( prevZoom !== scope.object.zoom ) {\n\n\t\t\t\t\t\tscope.object.updateProjectionMatrix();\n\t\t\t\t\t\tzoomChanged = true;\n\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t\tscale = 1;\n\t\t\t\tperformCursorZoom = false;\n\n\t\t\t\t// update condition is:\n\t\t\t\t// min(camera displacement, camera rotation in radians)^2 > EPS\n\t\t\t\t// using small-angle approximation cos(x/2) = 1 - x^2 / 8\n\n\t\t\t\tif ( zoomChanged ||\n\t\t\t\t\tlastPosition.distanceToSquared( scope.object.position ) > EPS ||\n\t\t\t\t\t8 * ( 1 - lastQuaternion.dot( scope.object.quaternion ) ) > EPS ||\n\t\t\t\t\tlastTargetPosition.distanceToSquared( scope.target ) > EPS ) {\n\n\t\t\t\t\tscope.dispatchEvent( _changeEvent );\n\n\t\t\t\t\tlastPosition.copy( scope.object.position );\n\t\t\t\t\tlastQuaternion.copy( scope.object.quaternion );\n\t\t\t\t\tlastTargetPosition.copy( scope.target );\n\n\t\t\t\t\treturn true;\n\n\t\t\t\t}\n\n\t\t\t\treturn false;\n\n\t\t\t};\n\n\t\t}();\n\n\t\tthis.dispose = function () {\n\n\t\t\tscope.domElement.removeEventListener( 'contextmenu', onContextMenu );\n\n\t\t\tscope.domElement.removeEventListener( 'pointerdown', onPointerDown );\n\t\t\tscope.domElement.removeEventListener( 'pointercancel', onPointerUp );\n\t\t\tscope.domElement.removeEventListener( 'wheel', onMouseWheel );\n\n\t\t\tscope.domElement.removeEventListener( 'pointermove', onPointerMove );\n\t\t\tscope.domElement.removeEventListener( 'pointerup', onPointerUp );\n\n\t\t\tconst document = scope.domElement.getRootNode(); // offscreen canvas compatibility\n\n\t\t\tdocument.removeEventListener( 'keydown', interceptControlDown, { capture: true } );\n\n\t\t\tif ( scope._domElementKeyEvents !== null ) {\n\n\t\t\t\tscope._domElementKeyEvents.removeEventListener( 'keydown', onKeyDown );\n\t\t\t\tscope._domElementKeyEvents = null;\n\n\t\t\t}\n\n\t\t\t//scope.dispatchEvent( { type: 'dispose' } ); // should this be added here?\n\n\t\t};\n\n\t\t//\n\t\t// internals\n\t\t//\n\n\t\tconst scope = this;\n\n\t\tconst STATE = {\n\t\t\tNONE: - 1,\n\t\t\tROTATE: 0,\n\t\t\tDOLLY: 1,\n\t\t\tPAN: 2,\n\t\t\tTOUCH_ROTATE: 3,\n\t\t\tTOUCH_PAN: 4,\n\t\t\tTOUCH_DOLLY_PAN: 5,\n\t\t\tTOUCH_DOLLY_ROTATE: 6\n\t\t};\n\n\t\tlet state = STATE.NONE;\n\n\t\tconst EPS = 0.000001;\n\n\t\t// current position in spherical coordinates\n\t\tconst spherical = new Spherical();\n\t\tconst sphericalDelta = new Spherical();\n\n\t\tlet scale = 1;\n\t\tconst panOffset = new Vector3();\n\n\t\tconst rotateStart = new Vector2();\n\t\tconst rotateEnd = new Vector2();\n\t\tconst rotateDelta = new Vector2();\n\n\t\tconst panStart = new Vector2();\n\t\tconst panEnd = new Vector2();\n\t\tconst panDelta = new Vector2();\n\n\t\tconst dollyStart = new Vector2();\n\t\tconst dollyEnd = new Vector2();\n\t\tconst dollyDelta = new Vector2();\n\n\t\tconst dollyDirection = new Vector3();\n\t\tconst mouse = new Vector2();\n\t\tlet performCursorZoom = false;\n\n\t\tconst pointers = [];\n\t\tconst pointerPositions = {};\n\n\t\tlet controlActive = false;\n\n\t\tfunction getAutoRotationAngle( deltaTime ) {\n\n\t\t\tif ( deltaTime !== null ) {\n\n\t\t\t\treturn ( 2 * Math.PI / 60 * scope.autoRotateSpeed ) * deltaTime;\n\n\t\t\t} else {\n\n\t\t\t\treturn 2 * Math.PI / 60 / 60 * scope.autoRotateSpeed;\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction getZoomScale( delta ) {\n\n\t\t\tconst normalizedDelta = Math.abs( delta * 0.01 );\n\t\t\treturn Math.pow( 0.95, scope.zoomSpeed * normalizedDelta );\n\n\t\t}\n\n\t\tfunction rotateLeft( angle ) {\n\n\t\t\tsphericalDelta.theta -= angle;\n\n\t\t}\n\n\t\tfunction rotateUp( angle ) {\n\n\t\t\tsphericalDelta.phi -= angle;\n\n\t\t}\n\n\t\tconst panLeft = function () {\n\n\t\t\tconst v = new Vector3();\n\n\t\t\treturn function panLeft( distance, objectMatrix ) {\n\n\t\t\t\tv.setFromMatrixColumn( objectMatrix, 0 ); // get X column of objectMatrix\n\t\t\t\tv.multiplyScalar( - distance );\n\n\t\t\t\tpanOffset.add( v );\n\n\t\t\t};\n\n\t\t}();\n\n\t\tconst panUp = function () {\n\n\t\t\tconst v = new Vector3();\n\n\t\t\treturn function panUp( distance, objectMatrix ) {\n\n\t\t\t\tif ( scope.screenSpacePanning === true ) {\n\n\t\t\t\t\tv.setFromMatrixColumn( objectMatrix, 1 );\n\n\t\t\t\t} else {\n\n\t\t\t\t\tv.setFromMatrixColumn( objectMatrix, 0 );\n\t\t\t\t\tv.crossVectors( scope.object.up, v );\n\n\t\t\t\t}\n\n\t\t\t\tv.multiplyScalar( distance );\n\n\t\t\t\tpanOffset.add( v );\n\n\t\t\t};\n\n\t\t}();\n\n\t\t// deltaX and deltaY are in pixels; right and down are positive\n\t\tconst pan = function () {\n\n\t\t\tconst offset = new Vector3();\n\n\t\t\treturn function pan( deltaX, deltaY ) {\n\n\t\t\t\tconst element = scope.domElement;\n\n\t\t\t\tif ( scope.object.isPerspectiveCamera ) {\n\n\t\t\t\t\t// perspective\n\t\t\t\t\tconst position = scope.object.position;\n\t\t\t\t\toffset.copy( position ).sub( scope.target );\n\t\t\t\t\tlet targetDistance = offset.length();\n\n\t\t\t\t\t// half of the fov is center to top of screen\n\t\t\t\t\ttargetDistance *= Math.tan( ( scope.object.fov / 2 ) * Math.PI / 180.0 );\n\n\t\t\t\t\t// we use only clientHeight here so aspect ratio does not distort speed\n\t\t\t\t\tpanLeft( 2 * deltaX * targetDistance / element.clientHeight, scope.object.matrix );\n\t\t\t\t\tpanUp( 2 * deltaY * targetDistance / element.clientHeight, scope.object.matrix );\n\n\t\t\t\t} else if ( scope.object.isOrthographicCamera ) {\n\n\t\t\t\t\t// orthographic\n\t\t\t\t\tpanLeft( deltaX * ( scope.object.right - scope.object.left ) / scope.object.zoom / element.clientWidth, scope.object.matrix );\n\t\t\t\t\tpanUp( deltaY * ( scope.object.top - scope.object.bottom ) / scope.object.zoom / element.clientHeight, scope.object.matrix );\n\n\t\t\t\t} else {\n\n\t\t\t\t\t// camera neither orthographic nor perspective\n\t\t\t\t\tconsole.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - pan disabled.' );\n\t\t\t\t\tscope.enablePan = false;\n\n\t\t\t\t}\n\n\t\t\t};\n\n\t\t}();\n\n\t\tfunction dollyOut( dollyScale ) {\n\n\t\t\tif ( scope.object.isPerspectiveCamera || scope.object.isOrthographicCamera ) {\n\n\t\t\t\tscale /= dollyScale;\n\n\t\t\t} else {\n\n\t\t\t\tconsole.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled.' );\n\t\t\t\tscope.enableZoom = false;\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction dollyIn( dollyScale ) {\n\n\t\t\tif ( scope.object.isPerspectiveCamera || scope.object.isOrthographicCamera ) {\n\n\t\t\t\tscale *= dollyScale;\n\n\t\t\t} else {\n\n\t\t\t\tconsole.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled.' );\n\t\t\t\tscope.enableZoom = false;\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction updateZoomParameters( x, y ) {\n\n\t\t\tif ( ! scope.zoomToCursor ) {\n\n\t\t\t\treturn;\n\n\t\t\t}\n\n\t\t\tperformCursorZoom = true;\n\n\t\t\tconst rect = scope.domElement.getBoundingClientRect();\n\t\t\tconst dx = x - rect.left;\n\t\t\tconst dy = y - rect.top;\n\t\t\tconst w = rect.width;\n\t\t\tconst h = rect.height;\n\n\t\t\tmouse.x = ( dx / w ) * 2 - 1;\n\t\t\tmouse.y = - ( dy / h ) * 2 + 1;\n\n\t\t\tdollyDirection.set( mouse.x, mouse.y, 1 ).unproject( scope.object ).sub( scope.object.position ).normalize();\n\n\t\t}\n\n\t\tfunction clampDistance( dist ) {\n\n\t\t\treturn Math.max( scope.minDistance, Math.min( scope.maxDistance, dist ) );\n\n\t\t}\n\n\t\t//\n\t\t// event callbacks - update the object state\n\t\t//\n\n\t\tfunction handleMouseDownRotate( event ) {\n\n\t\t\trotateStart.set( event.clientX, event.clientY );\n\n\t\t}\n\n\t\tfunction handleMouseDownDolly( event ) {\n\n\t\t\tupdateZoomParameters( event.clientX, event.clientX );\n\t\t\tdollyStart.set( event.clientX, event.clientY );\n\n\t\t}\n\n\t\tfunction handleMouseDownPan( event ) {\n\n\t\t\tpanStart.set( event.clientX, event.clientY );\n\n\t\t}\n\n\t\tfunction handleMouseMoveRotate( event ) {\n\n\t\t\trotateEnd.set( event.clientX, event.clientY );\n\n\t\t\trotateDelta.subVectors( rotateEnd, rotateStart ).multiplyScalar( scope.rotateSpeed );\n\n\t\t\tconst element = scope.domElement;\n\n\t\t\trotateLeft( 2 * Math.PI * rotateDelta.x / element.clientHeight ); // yes, height\n\n\t\t\trotateUp( 2 * Math.PI * rotateDelta.y / element.clientHeight );\n\n\t\t\trotateStart.copy( rotateEnd );\n\n\t\t\tscope.update();\n\n\t\t}\n\n\t\tfunction handleMouseMoveDolly( event ) {\n\n\t\t\tdollyEnd.set( event.clientX, event.clientY );\n\n\t\t\tdollyDelta.subVectors( dollyEnd, dollyStart );\n\n\t\t\tif ( dollyDelta.y > 0 ) {\n\n\t\t\t\tdollyOut( getZoomScale( dollyDelta.y ) );\n\n\t\t\t} else if ( dollyDelta.y < 0 ) {\n\n\t\t\t\tdollyIn( getZoomScale( dollyDelta.y ) );\n\n\t\t\t}\n\n\t\t\tdollyStart.copy( dollyEnd );\n\n\t\t\tscope.update();\n\n\t\t}\n\n\t\tfunction handleMouseMovePan( event ) {\n\n\t\t\tpanEnd.set( event.clientX, event.clientY );\n\n\t\t\tpanDelta.subVectors( panEnd, panStart ).multiplyScalar( scope.panSpeed );\n\n\t\t\tpan( panDelta.x, panDelta.y );\n\n\t\t\tpanStart.copy( panEnd );\n\n\t\t\tscope.update();\n\n\t\t}\n\n\t\tfunction handleMouseWheel( event ) {\n\n\t\t\tupdateZoomParameters( event.clientX, event.clientY );\n\n\t\t\tif ( event.deltaY < 0 ) {\n\n\t\t\t\tdollyIn( getZoomScale( event.deltaY ) );\n\n\t\t\t} else if ( event.deltaY > 0 ) {\n\n\t\t\t\tdollyOut( getZoomScale( event.deltaY ) );\n\n\t\t\t}\n\n\t\t\tscope.update();\n\n\t\t}\n\n\t\tfunction handleKeyDown( event ) {\n\n\t\t\tlet needsUpdate = false;\n\n\t\t\tswitch ( event.code ) {\n\n\t\t\t\tcase scope.keys.UP:\n\n\t\t\t\t\tif ( event.ctrlKey || event.metaKey || event.shiftKey ) {\n\n\t\t\t\t\t\trotateUp( 2 * Math.PI * scope.rotateSpeed / scope.domElement.clientHeight );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tpan( 0, scope.keyPanSpeed );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tneedsUpdate = true;\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase scope.keys.BOTTOM:\n\n\t\t\t\t\tif ( event.ctrlKey || event.metaKey || event.shiftKey ) {\n\n\t\t\t\t\t\trotateUp( - 2 * Math.PI * scope.rotateSpeed / scope.domElement.clientHeight );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tpan( 0, - scope.keyPanSpeed );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tneedsUpdate = true;\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase scope.keys.LEFT:\n\n\t\t\t\t\tif ( event.ctrlKey || event.metaKey || event.shiftKey ) {\n\n\t\t\t\t\t\trotateLeft( 2 * Math.PI * scope.rotateSpeed / scope.domElement.clientHeight );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tpan( scope.keyPanSpeed, 0 );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tneedsUpdate = true;\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase scope.keys.RIGHT:\n\n\t\t\t\t\tif ( event.ctrlKey || event.metaKey || event.shiftKey ) {\n\n\t\t\t\t\t\trotateLeft( - 2 * Math.PI * scope.rotateSpeed / scope.domElement.clientHeight );\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tpan( - scope.keyPanSpeed, 0 );\n\n\t\t\t\t\t}\n\n\t\t\t\t\tneedsUpdate = true;\n\t\t\t\t\tbreak;\n\n\t\t\t}\n\n\t\t\tif ( needsUpdate ) {\n\n\t\t\t\t// prevent the browser from scrolling on cursor keys\n\t\t\t\tevent.preventDefault();\n\n\t\t\t\tscope.update();\n\n\t\t\t}\n\n\n\t\t}\n\n\t\tfunction handleTouchStartRotate( event ) {\n\n\t\t\tif ( pointers.length === 1 ) {\n\n\t\t\t\trotateStart.set( event.pageX, event.pageY );\n\n\t\t\t} else {\n\n\t\t\t\tconst position = getSecondPointerPosition( event );\n\n\t\t\t\tconst x = 0.5 * ( event.pageX + position.x );\n\t\t\t\tconst y = 0.5 * ( event.pageY + position.y );\n\n\t\t\t\trotateStart.set( x, y );\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction handleTouchStartPan( event ) {\n\n\t\t\tif ( pointers.length === 1 ) {\n\n\t\t\t\tpanStart.set( event.pageX, event.pageY );\n\n\t\t\t} else {\n\n\t\t\t\tconst position = getSecondPointerPosition( event );\n\n\t\t\t\tconst x = 0.5 * ( event.pageX + position.x );\n\t\t\t\tconst y = 0.5 * ( event.pageY + position.y );\n\n\t\t\t\tpanStart.set( x, y );\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction handleTouchStartDolly( event ) {\n\n\t\t\tconst position = getSecondPointerPosition( event );\n\n\t\t\tconst dx = event.pageX - position.x;\n\t\t\tconst dy = event.pageY - position.y;\n\n\t\t\tconst distance = Math.sqrt( dx * dx + dy * dy );\n\n\t\t\tdollyStart.set( 0, distance );\n\n\t\t}\n\n\t\tfunction handleTouchStartDollyPan( event ) {\n\n\t\t\tif ( scope.enableZoom ) handleTouchStartDolly( event );\n\n\t\t\tif ( scope.enablePan ) handleTouchStartPan( event );\n\n\t\t}\n\n\t\tfunction handleTouchStartDollyRotate( event ) {\n\n\t\t\tif ( scope.enableZoom ) handleTouchStartDolly( event );\n\n\t\t\tif ( scope.enableRotate ) handleTouchStartRotate( event );\n\n\t\t}\n\n\t\tfunction handleTouchMoveRotate( event ) {\n\n\t\t\tif ( pointers.length == 1 ) {\n\n\t\t\t\trotateEnd.set( event.pageX, event.pageY );\n\n\t\t\t} else {\n\n\t\t\t\tconst position = getSecondPointerPosition( event );\n\n\t\t\t\tconst x = 0.5 * ( event.pageX + position.x );\n\t\t\t\tconst y = 0.5 * ( event.pageY + position.y );\n\n\t\t\t\trotateEnd.set( x, y );\n\n\t\t\t}\n\n\t\t\trotateDelta.subVectors( rotateEnd, rotateStart ).multiplyScalar( scope.rotateSpeed );\n\n\t\t\tconst element = scope.domElement;\n\n\t\t\trotateLeft( 2 * Math.PI * rotateDelta.x / element.clientHeight ); // yes, height\n\n\t\t\trotateUp( 2 * Math.PI * rotateDelta.y / element.clientHeight );\n\n\t\t\trotateStart.copy( rotateEnd );\n\n\t\t}\n\n\t\tfunction handleTouchMovePan( event ) {\n\n\t\t\tif ( pointers.length === 1 ) {\n\n\t\t\t\tpanEnd.set( event.pageX, event.pageY );\n\n\t\t\t} else {\n\n\t\t\t\tconst position = getSecondPointerPosition( event );\n\n\t\t\t\tconst x = 0.5 * ( event.pageX + position.x );\n\t\t\t\tconst y = 0.5 * ( event.pageY + position.y );\n\n\t\t\t\tpanEnd.set( x, y );\n\n\t\t\t}\n\n\t\t\tpanDelta.subVectors( panEnd, panStart ).multiplyScalar( scope.panSpeed );\n\n\t\t\tpan( panDelta.x, panDelta.y );\n\n\t\t\tpanStart.copy( panEnd );\n\n\t\t}\n\n\t\tfunction handleTouchMoveDolly( event ) {\n\n\t\t\tconst position = getSecondPointerPosition( event );\n\n\t\t\tconst dx = event.pageX - position.x;\n\t\t\tconst dy = event.pageY - position.y;\n\n\t\t\tconst distance = Math.sqrt( dx * dx + dy * dy );\n\n\t\t\tdollyEnd.set( 0, distance );\n\n\t\t\tdollyDelta.set( 0, Math.pow( dollyEnd.y / dollyStart.y, scope.zoomSpeed ) );\n\n\t\t\tdollyOut( dollyDelta.y );\n\n\t\t\tdollyStart.copy( dollyEnd );\n\n\t\t\tconst centerX = ( event.pageX + position.x ) * 0.5;\n\t\t\tconst centerY = ( event.pageY + position.y ) * 0.5;\n\n\t\t\tupdateZoomParameters( centerX, centerY );\n\n\t\t}\n\n\t\tfunction handleTouchMoveDollyPan( event ) {\n\n\t\t\tif ( scope.enableZoom ) handleTouchMoveDolly( event );\n\n\t\t\tif ( scope.enablePan ) handleTouchMovePan( event );\n\n\t\t}\n\n\t\tfunction handleTouchMoveDollyRotate( event ) {\n\n\t\t\tif ( scope.enableZoom ) handleTouchMoveDolly( event );\n\n\t\t\tif ( scope.enableRotate ) handleTouchMoveRotate( event );\n\n\t\t}\n\n\t\t//\n\t\t// event handlers - FSM: listen for events and reset state\n\t\t//\n\n\t\tfunction onPointerDown( event ) {\n\n\t\t\tif ( scope.enabled === false ) return;\n\n\t\t\tif ( pointers.length === 0 ) {\n\n\t\t\t\tscope.domElement.setPointerCapture( event.pointerId );\n\n\t\t\t\tscope.domElement.addEventListener( 'pointermove', onPointerMove );\n\t\t\t\tscope.domElement.addEventListener( 'pointerup', onPointerUp );\n\n\t\t\t}\n\n\t\t\t//\n\n\t\t\tif ( isTrackingPointer( event ) ) return;\n\n\t\t\t//\n\n\t\t\taddPointer( event );\n\n\t\t\tif ( event.pointerType === 'touch' ) {\n\n\t\t\t\tonTouchStart( event );\n\n\t\t\t} else {\n\n\t\t\t\tonMouseDown( event );\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction onPointerMove( event ) {\n\n\t\t\tif ( scope.enabled === false ) return;\n\n\t\t\tif ( event.pointerType === 'touch' ) {\n\n\t\t\t\tonTouchMove( event );\n\n\t\t\t} else {\n\n\t\t\t\tonMouseMove( event );\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction onPointerUp( event ) {\n\n\t\t\tremovePointer( event );\n\n\t\t\tswitch ( pointers.length ) {\n\n\t\t\t\tcase 0:\n\n\t\t\t\t\tscope.domElement.releasePointerCapture( event.pointerId );\n\n\t\t\t\t\tscope.domElement.removeEventListener( 'pointermove', onPointerMove );\n\t\t\t\t\tscope.domElement.removeEventListener( 'pointerup', onPointerUp );\n\n\t\t\t\t\tscope.dispatchEvent( _endEvent );\n\n\t\t\t\t\tstate = STATE.NONE;\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 1:\n\n\t\t\t\t\tconst pointerId = pointers[ 0 ];\n\t\t\t\t\tconst position = pointerPositions[ pointerId ];\n\n\t\t\t\t\t// minimal placeholder event - allows state correction on pointer-up\n\t\t\t\t\tonTouchStart( { pointerId: pointerId, pageX: position.x, pageY: position.y } );\n\n\t\t\t\t\tbreak;\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction onMouseDown( event ) {\n\n\t\t\tlet mouseAction;\n\n\t\t\tswitch ( event.button ) {\n\n\t\t\t\tcase 0:\n\n\t\t\t\t\tmouseAction = scope.mouseButtons.LEFT;\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 1:\n\n\t\t\t\t\tmouseAction = scope.mouseButtons.MIDDLE;\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 2:\n\n\t\t\t\t\tmouseAction = scope.mouseButtons.RIGHT;\n\t\t\t\t\tbreak;\n\n\t\t\t\tdefault:\n\n\t\t\t\t\tmouseAction = - 1;\n\n\t\t\t}\n\n\t\t\tswitch ( mouseAction ) {\n\n\t\t\t\tcase MOUSE.DOLLY:\n\n\t\t\t\t\tif ( scope.enableZoom === false ) return;\n\n\t\t\t\t\thandleMouseDownDolly( event );\n\n\t\t\t\t\tstate = STATE.DOLLY;\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase MOUSE.ROTATE:\n\n\t\t\t\t\tif ( event.ctrlKey || event.metaKey || event.shiftKey ) {\n\n\t\t\t\t\t\tif ( scope.enablePan === false ) return;\n\n\t\t\t\t\t\thandleMouseDownPan( event );\n\n\t\t\t\t\t\tstate = STATE.PAN;\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tif ( scope.enableRotate === false ) return;\n\n\t\t\t\t\t\thandleMouseDownRotate( event );\n\n\t\t\t\t\t\tstate = STATE.ROTATE;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase MOUSE.PAN:\n\n\t\t\t\t\tif ( event.ctrlKey || event.metaKey || event.shiftKey ) {\n\n\t\t\t\t\t\tif ( scope.enableRotate === false ) return;\n\n\t\t\t\t\t\thandleMouseDownRotate( event );\n\n\t\t\t\t\t\tstate = STATE.ROTATE;\n\n\t\t\t\t\t} else {\n\n\t\t\t\t\t\tif ( scope.enablePan === false ) return;\n\n\t\t\t\t\t\thandleMouseDownPan( event );\n\n\t\t\t\t\t\tstate = STATE.PAN;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tdefault:\n\n\t\t\t\t\tstate = STATE.NONE;\n\n\t\t\t}\n\n\t\t\tif ( state !== STATE.NONE ) {\n\n\t\t\t\tscope.dispatchEvent( _startEvent );\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction onMouseMove( event ) {\n\n\t\t\tswitch ( state ) {\n\n\t\t\t\tcase STATE.ROTATE:\n\n\t\t\t\t\tif ( scope.enableRotate === false ) return;\n\n\t\t\t\t\thandleMouseMoveRotate( event );\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase STATE.DOLLY:\n\n\t\t\t\t\tif ( scope.enableZoom === false ) return;\n\n\t\t\t\t\thandleMouseMoveDolly( event );\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase STATE.PAN:\n\n\t\t\t\t\tif ( scope.enablePan === false ) return;\n\n\t\t\t\t\thandleMouseMovePan( event );\n\n\t\t\t\t\tbreak;\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction onMouseWheel( event ) {\n\n\t\t\tif ( scope.enabled === false || scope.enableZoom === false || state !== STATE.NONE ) return;\n\n\t\t\tevent.preventDefault();\n\n\t\t\tscope.dispatchEvent( _startEvent );\n\n\t\t\thandleMouseWheel( customWheelEvent( event ) );\n\n\t\t\tscope.dispatchEvent( _endEvent );\n\n\t\t}\n\n\t\tfunction customWheelEvent( event ) {\n\n\t\t\tconst mode = event.deltaMode;\n\n\t\t\t// minimal wheel event altered to meet delta-zoom demand\n\t\t\tconst newEvent = {\n\t\t\t\tclientX: event.clientX,\n\t\t\t\tclientY: event.clientY,\n\t\t\t\tdeltaY: event.deltaY,\n\t\t\t};\n\n\t\t\tswitch ( mode ) {\n\n\t\t\t\tcase 1: // LINE_MODE\n\t\t\t\t\tnewEvent.deltaY *= 16;\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 2: // PAGE_MODE\n\t\t\t\t\tnewEvent.deltaY *= 100;\n\t\t\t\t\tbreak;\n\n\t\t\t}\n\n\t\t\t// detect if event was triggered by pinching\n\t\t\tif ( event.ctrlKey && ! controlActive ) {\n\n\t\t\t\tnewEvent.deltaY *= 10;\n\n\t\t\t}\n\n\t\t\treturn newEvent;\n\n\t\t}\n\n\t\tfunction interceptControlDown( event ) {\n\n\t\t\tif ( event.key === 'Control' ) {\n\n\t\t\t\tcontrolActive = true;\n\n\n\t\t\t\tconst document = scope.domElement.getRootNode(); // offscreen canvas compatibility\n\n\t\t\t\tdocument.addEventListener( 'keyup', interceptControlUp, { passive: true, capture: true } );\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction interceptControlUp( event ) {\n\n\t\t\tif ( event.key === 'Control' ) {\n\n\t\t\t\tcontrolActive = false;\n\n\n\t\t\t\tconst document = scope.domElement.getRootNode(); // offscreen canvas compatibility\n\n\t\t\t\tdocument.removeEventListener( 'keyup', interceptControlUp, { passive: true, capture: true } );\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction onKeyDown( event ) {\n\n\t\t\tif ( scope.enabled === false || scope.enablePan === false ) return;\n\n\t\t\thandleKeyDown( event );\n\n\t\t}\n\n\t\tfunction onTouchStart( event ) {\n\n\t\t\ttrackPointer( event );\n\n\t\t\tswitch ( pointers.length ) {\n\n\t\t\t\tcase 1:\n\n\t\t\t\t\tswitch ( scope.touches.ONE ) {\n\n\t\t\t\t\t\tcase TOUCH.ROTATE:\n\n\t\t\t\t\t\t\tif ( scope.enableRotate === false ) return;\n\n\t\t\t\t\t\t\thandleTouchStartRotate( event );\n\n\t\t\t\t\t\t\tstate = STATE.TOUCH_ROTATE;\n\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase TOUCH.PAN:\n\n\t\t\t\t\t\t\tif ( scope.enablePan === false ) return;\n\n\t\t\t\t\t\t\thandleTouchStartPan( event );\n\n\t\t\t\t\t\t\tstate = STATE.TOUCH_PAN;\n\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tdefault:\n\n\t\t\t\t\t\t\tstate = STATE.NONE;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase 2:\n\n\t\t\t\t\tswitch ( scope.touches.TWO ) {\n\n\t\t\t\t\t\tcase TOUCH.DOLLY_PAN:\n\n\t\t\t\t\t\t\tif ( scope.enableZoom === false && scope.enablePan === false ) return;\n\n\t\t\t\t\t\t\thandleTouchStartDollyPan( event );\n\n\t\t\t\t\t\t\tstate = STATE.TOUCH_DOLLY_PAN;\n\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tcase TOUCH.DOLLY_ROTATE:\n\n\t\t\t\t\t\t\tif ( scope.enableZoom === false && scope.enableRotate === false ) return;\n\n\t\t\t\t\t\t\thandleTouchStartDollyRotate( event );\n\n\t\t\t\t\t\t\tstate = STATE.TOUCH_DOLLY_ROTATE;\n\n\t\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t\tdefault:\n\n\t\t\t\t\t\t\tstate = STATE.NONE;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tdefault:\n\n\t\t\t\t\tstate = STATE.NONE;\n\n\t\t\t}\n\n\t\t\tif ( state !== STATE.NONE ) {\n\n\t\t\t\tscope.dispatchEvent( _startEvent );\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction onTouchMove( event ) {\n\n\t\t\ttrackPointer( event );\n\n\t\t\tswitch ( state ) {\n\n\t\t\t\tcase STATE.TOUCH_ROTATE:\n\n\t\t\t\t\tif ( scope.enableRotate === false ) return;\n\n\t\t\t\t\thandleTouchMoveRotate( event );\n\n\t\t\t\t\tscope.update();\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase STATE.TOUCH_PAN:\n\n\t\t\t\t\tif ( scope.enablePan === false ) return;\n\n\t\t\t\t\thandleTouchMovePan( event );\n\n\t\t\t\t\tscope.update();\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase STATE.TOUCH_DOLLY_PAN:\n\n\t\t\t\t\tif ( scope.enableZoom === false && scope.enablePan === false ) return;\n\n\t\t\t\t\thandleTouchMoveDollyPan( event );\n\n\t\t\t\t\tscope.update();\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tcase STATE.TOUCH_DOLLY_ROTATE:\n\n\t\t\t\t\tif ( scope.enableZoom === false && scope.enableRotate === false ) return;\n\n\t\t\t\t\thandleTouchMoveDollyRotate( event );\n\n\t\t\t\t\tscope.update();\n\n\t\t\t\t\tbreak;\n\n\t\t\t\tdefault:\n\n\t\t\t\t\tstate = STATE.NONE;\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction onContextMenu( event ) {\n\n\t\t\tif ( scope.enabled === false ) return;\n\n\t\t\tevent.preventDefault();\n\n\t\t}\n\n\t\tfunction addPointer( event ) {\n\n\t\t\tpointers.push( event.pointerId );\n\n\t\t}\n\n\t\tfunction removePointer( event ) {\n\n\t\t\tdelete pointerPositions[ event.pointerId ];\n\n\t\t\tfor ( let i = 0; i < pointers.length; i ++ ) {\n\n\t\t\t\tif ( pointers[ i ] == event.pointerId ) {\n\n\t\t\t\t\tpointers.splice( i, 1 );\n\t\t\t\t\treturn;\n\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tfunction isTrackingPointer( event ) {\n\n\t\t\tfor ( let i = 0; i < pointers.length; i ++ ) {\n\n\t\t\t\tif ( pointers[ i ] == event.pointerId ) return true;\n\n\t\t\t}\n\n\t\t\treturn false;\n\n\t\t}\n\n\t\tfunction trackPointer( event ) {\n\n\t\t\tlet position = pointerPositions[ event.pointerId ];\n\n\t\t\tif ( position === undefined ) {\n\n\t\t\t\tposition = new Vector2();\n\t\t\t\tpointerPositions[ event.pointerId ] = position;\n\n\t\t\t}\n\n\t\t\tposition.set( event.pageX, event.pageY );\n\n\t\t}\n\n\t\tfunction getSecondPointerPosition( event ) {\n\n\t\t\tconst pointerId = ( event.pointerId === pointers[ 0 ] ) ? pointers[ 1 ] : pointers[ 0 ];\n\n\t\t\treturn pointerPositions[ pointerId ];\n\n\t\t}\n\n\t\t//\n\n\t\tscope.domElement.addEventListener( 'contextmenu', onContextMenu );\n\n\t\tscope.domElement.addEventListener( 'pointerdown', onPointerDown );\n\t\tscope.domElement.addEventListener( 'pointercancel', onPointerUp );\n\t\tscope.domElement.addEventListener( 'wheel', onMouseWheel, { passive: false } );\n\n\t\tconst document = scope.domElement.getRootNode(); // offscreen canvas compatibility\n\n\t\tdocument.addEventListener( 'keydown', interceptControlDown, { passive: true, capture: true } );\n\n\t\t// force an update at start\n\n\t\tthis.update();\n\n\t}\n\n}\n\nexport { OrbitControls };\n","module.exports = new __parcel__URL__(\"logoBlack.3cff759b.svg\").toString();","module.exports = new __parcel__URL__(\"logoWhite.4fabdeaa.svg\").toString();","/**!\n * @fileOverview Kickass library to create and place poppers near their reference elements.\n * @version 1.16.1\n * @license\n * Copyright (c) 2016 Federico Zivolo and contributors\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in all\n * copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE\n * SOFTWARE.\n */\nvar isBrowser = typeof window !== 'undefined' && typeof document !== 'undefined' && typeof navigator !== 'undefined';\n\nvar timeoutDuration = function () {\n var longerTimeoutBrowsers = ['Edge', 'Trident', 'Firefox'];\n for (var i = 0; i < longerTimeoutBrowsers.length; i += 1) {\n if (isBrowser && navigator.userAgent.indexOf(longerTimeoutBrowsers[i]) >= 0) {\n return 1;\n }\n }\n return 0;\n}();\n\nfunction microtaskDebounce(fn) {\n var called = false;\n return function () {\n if (called) {\n return;\n }\n called = true;\n window.Promise.resolve().then(function () {\n called = false;\n fn();\n });\n };\n}\n\nfunction taskDebounce(fn) {\n var scheduled = false;\n return function () {\n if (!scheduled) {\n scheduled = true;\n setTimeout(function () {\n scheduled = false;\n fn();\n }, timeoutDuration);\n }\n };\n}\n\nvar supportsMicroTasks = isBrowser && window.Promise;\n\n/**\n* Create a debounced version of a method, that's asynchronously deferred\n* but called in the minimum time possible.\n*\n* @method\n* @memberof Popper.Utils\n* @argument {Function} fn\n* @returns {Function}\n*/\nvar debounce = supportsMicroTasks ? microtaskDebounce : taskDebounce;\n\n/**\n * Check if the given variable is a function\n * @method\n * @memberof Popper.Utils\n * @argument {Any} functionToCheck - variable to check\n * @returns {Boolean} answer to: is a function?\n */\nfunction isFunction(functionToCheck) {\n var getType = {};\n return functionToCheck && getType.toString.call(functionToCheck) === '[object Function]';\n}\n\n/**\n * Get CSS computed property of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Eement} element\n * @argument {String} property\n */\nfunction getStyleComputedProperty(element, property) {\n if (element.nodeType !== 1) {\n return [];\n }\n // NOTE: 1 DOM access here\n var window = element.ownerDocument.defaultView;\n var css = window.getComputedStyle(element, null);\n return property ? css[property] : css;\n}\n\n/**\n * Returns the parentNode or the host of the element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} parent\n */\nfunction getParentNode(element) {\n if (element.nodeName === 'HTML') {\n return element;\n }\n return element.parentNode || element.host;\n}\n\n/**\n * Returns the scrolling parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} scroll parent\n */\nfunction getScrollParent(element) {\n // Return body, `getScroll` will take care to get the correct `scrollTop` from it\n if (!element) {\n return document.body;\n }\n\n switch (element.nodeName) {\n case 'HTML':\n case 'BODY':\n return element.ownerDocument.body;\n case '#document':\n return element.body;\n }\n\n // Firefox want us to check `-x` and `-y` variations as well\n\n var _getStyleComputedProp = getStyleComputedProperty(element),\n overflow = _getStyleComputedProp.overflow,\n overflowX = _getStyleComputedProp.overflowX,\n overflowY = _getStyleComputedProp.overflowY;\n\n if (/(auto|scroll|overlay)/.test(overflow + overflowY + overflowX)) {\n return element;\n }\n\n return getScrollParent(getParentNode(element));\n}\n\n/**\n * Returns the reference node of the reference object, or the reference object itself.\n * @method\n * @memberof Popper.Utils\n * @param {Element|Object} reference - the reference element (the popper will be relative to this)\n * @returns {Element} parent\n */\nfunction getReferenceNode(reference) {\n return reference && reference.referenceNode ? reference.referenceNode : reference;\n}\n\nvar isIE11 = isBrowser && !!(window.MSInputMethodContext && document.documentMode);\nvar isIE10 = isBrowser && /MSIE 10/.test(navigator.userAgent);\n\n/**\n * Determines if the browser is Internet Explorer\n * @method\n * @memberof Popper.Utils\n * @param {Number} version to check\n * @returns {Boolean} isIE\n */\nfunction isIE(version) {\n if (version === 11) {\n return isIE11;\n }\n if (version === 10) {\n return isIE10;\n }\n return isIE11 || isIE10;\n}\n\n/**\n * Returns the offset parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} offset parent\n */\nfunction getOffsetParent(element) {\n if (!element) {\n return document.documentElement;\n }\n\n var noOffsetParent = isIE(10) ? document.body : null;\n\n // NOTE: 1 DOM access here\n var offsetParent = element.offsetParent || null;\n // Skip hidden elements which don't have an offsetParent\n while (offsetParent === noOffsetParent && element.nextElementSibling) {\n offsetParent = (element = element.nextElementSibling).offsetParent;\n }\n\n var nodeName = offsetParent && offsetParent.nodeName;\n\n if (!nodeName || nodeName === 'BODY' || nodeName === 'HTML') {\n return element ? element.ownerDocument.documentElement : document.documentElement;\n }\n\n // .offsetParent will return the closest TH, TD or TABLE in case\n // no offsetParent is present, I hate this job...\n if (['TH', 'TD', 'TABLE'].indexOf(offsetParent.nodeName) !== -1 && getStyleComputedProperty(offsetParent, 'position') === 'static') {\n return getOffsetParent(offsetParent);\n }\n\n return offsetParent;\n}\n\nfunction isOffsetContainer(element) {\n var nodeName = element.nodeName;\n\n if (nodeName === 'BODY') {\n return false;\n }\n return nodeName === 'HTML' || getOffsetParent(element.firstElementChild) === element;\n}\n\n/**\n * Finds the root node (document, shadowDOM root) of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} node\n * @returns {Element} root node\n */\nfunction getRoot(node) {\n if (node.parentNode !== null) {\n return getRoot(node.parentNode);\n }\n\n return node;\n}\n\n/**\n * Finds the offset parent common to the two provided nodes\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element1\n * @argument {Element} element2\n * @returns {Element} common offset parent\n */\nfunction findCommonOffsetParent(element1, element2) {\n // This check is needed to avoid errors in case one of the elements isn't defined for any reason\n if (!element1 || !element1.nodeType || !element2 || !element2.nodeType) {\n return document.documentElement;\n }\n\n // Here we make sure to give as \"start\" the element that comes first in the DOM\n var order = element1.compareDocumentPosition(element2) & Node.DOCUMENT_POSITION_FOLLOWING;\n var start = order ? element1 : element2;\n var end = order ? element2 : element1;\n\n // Get common ancestor container\n var range = document.createRange();\n range.setStart(start, 0);\n range.setEnd(end, 0);\n var commonAncestorContainer = range.commonAncestorContainer;\n\n // Both nodes are inside #document\n\n if (element1 !== commonAncestorContainer && element2 !== commonAncestorContainer || start.contains(end)) {\n if (isOffsetContainer(commonAncestorContainer)) {\n return commonAncestorContainer;\n }\n\n return getOffsetParent(commonAncestorContainer);\n }\n\n // one of the nodes is inside shadowDOM, find which one\n var element1root = getRoot(element1);\n if (element1root.host) {\n return findCommonOffsetParent(element1root.host, element2);\n } else {\n return findCommonOffsetParent(element1, getRoot(element2).host);\n }\n}\n\n/**\n * Gets the scroll value of the given element in the given side (top and left)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {String} side `top` or `left`\n * @returns {number} amount of scrolled pixels\n */\nfunction getScroll(element) {\n var side = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'top';\n\n var upperSide = side === 'top' ? 'scrollTop' : 'scrollLeft';\n var nodeName = element.nodeName;\n\n if (nodeName === 'BODY' || nodeName === 'HTML') {\n var html = element.ownerDocument.documentElement;\n var scrollingElement = element.ownerDocument.scrollingElement || html;\n return scrollingElement[upperSide];\n }\n\n return element[upperSide];\n}\n\n/*\n * Sum or subtract the element scroll values (left and top) from a given rect object\n * @method\n * @memberof Popper.Utils\n * @param {Object} rect - Rect object you want to change\n * @param {HTMLElement} element - The element from the function reads the scroll values\n * @param {Boolean} subtract - set to true if you want to subtract the scroll values\n * @return {Object} rect - The modifier rect object\n */\nfunction includeScroll(rect, element) {\n var subtract = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;\n\n var scrollTop = getScroll(element, 'top');\n var scrollLeft = getScroll(element, 'left');\n var modifier = subtract ? -1 : 1;\n rect.top += scrollTop * modifier;\n rect.bottom += scrollTop * modifier;\n rect.left += scrollLeft * modifier;\n rect.right += scrollLeft * modifier;\n return rect;\n}\n\n/*\n * Helper to detect borders of a given element\n * @method\n * @memberof Popper.Utils\n * @param {CSSStyleDeclaration} styles\n * Result of `getStyleComputedProperty` on the given element\n * @param {String} axis - `x` or `y`\n * @return {number} borders - The borders size of the given axis\n */\n\nfunction getBordersSize(styles, axis) {\n var sideA = axis === 'x' ? 'Left' : 'Top';\n var sideB = sideA === 'Left' ? 'Right' : 'Bottom';\n\n return parseFloat(styles['border' + sideA + 'Width']) + parseFloat(styles['border' + sideB + 'Width']);\n}\n\nfunction getSize(axis, body, html, computedStyle) {\n return Math.max(body['offset' + axis], body['scroll' + axis], html['client' + axis], html['offset' + axis], html['scroll' + axis], isIE(10) ? parseInt(html['offset' + axis]) + parseInt(computedStyle['margin' + (axis === 'Height' ? 'Top' : 'Left')]) + parseInt(computedStyle['margin' + (axis === 'Height' ? 'Bottom' : 'Right')]) : 0);\n}\n\nfunction getWindowSizes(document) {\n var body = document.body;\n var html = document.documentElement;\n var computedStyle = isIE(10) && getComputedStyle(html);\n\n return {\n height: getSize('Height', body, html, computedStyle),\n width: getSize('Width', body, html, computedStyle)\n };\n}\n\nvar classCallCheck = function (instance, Constructor) {\n if (!(instance instanceof Constructor)) {\n throw new TypeError(\"Cannot call a class as a function\");\n }\n};\n\nvar createClass = function () {\n function defineProperties(target, props) {\n for (var i = 0; i < props.length; i++) {\n var descriptor = props[i];\n descriptor.enumerable = descriptor.enumerable || false;\n descriptor.configurable = true;\n if (\"value\" in descriptor) descriptor.writable = true;\n Object.defineProperty(target, descriptor.key, descriptor);\n }\n }\n\n return function (Constructor, protoProps, staticProps) {\n if (protoProps) defineProperties(Constructor.prototype, protoProps);\n if (staticProps) defineProperties(Constructor, staticProps);\n return Constructor;\n };\n}();\n\n\n\n\n\nvar defineProperty = function (obj, key, value) {\n if (key in obj) {\n Object.defineProperty(obj, key, {\n value: value,\n enumerable: true,\n configurable: true,\n writable: true\n });\n } else {\n obj[key] = value;\n }\n\n return obj;\n};\n\nvar _extends = Object.assign || function (target) {\n for (var i = 1; i < arguments.length; i++) {\n var source = arguments[i];\n\n for (var key in source) {\n if (Object.prototype.hasOwnProperty.call(source, key)) {\n target[key] = source[key];\n }\n }\n }\n\n return target;\n};\n\n/**\n * Given element offsets, generate an output similar to getBoundingClientRect\n * @method\n * @memberof Popper.Utils\n * @argument {Object} offsets\n * @returns {Object} ClientRect like output\n */\nfunction getClientRect(offsets) {\n return _extends({}, offsets, {\n right: offsets.left + offsets.width,\n bottom: offsets.top + offsets.height\n });\n}\n\n/**\n * Get bounding client rect of given element\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} element\n * @return {Object} client rect\n */\nfunction getBoundingClientRect(element) {\n var rect = {};\n\n // IE10 10 FIX: Please, don't ask, the element isn't\n // considered in DOM in some circumstances...\n // This isn't reproducible in IE10 compatibility mode of IE11\n try {\n if (isIE(10)) {\n rect = element.getBoundingClientRect();\n var scrollTop = getScroll(element, 'top');\n var scrollLeft = getScroll(element, 'left');\n rect.top += scrollTop;\n rect.left += scrollLeft;\n rect.bottom += scrollTop;\n rect.right += scrollLeft;\n } else {\n rect = element.getBoundingClientRect();\n }\n } catch (e) {}\n\n var result = {\n left: rect.left,\n top: rect.top,\n width: rect.right - rect.left,\n height: rect.bottom - rect.top\n };\n\n // subtract scrollbar size from sizes\n var sizes = element.nodeName === 'HTML' ? getWindowSizes(element.ownerDocument) : {};\n var width = sizes.width || element.clientWidth || result.width;\n var height = sizes.height || element.clientHeight || result.height;\n\n var horizScrollbar = element.offsetWidth - width;\n var vertScrollbar = element.offsetHeight - height;\n\n // if an hypothetical scrollbar is detected, we must be sure it's not a `border`\n // we make this check conditional for performance reasons\n if (horizScrollbar || vertScrollbar) {\n var styles = getStyleComputedProperty(element);\n horizScrollbar -= getBordersSize(styles, 'x');\n vertScrollbar -= getBordersSize(styles, 'y');\n\n result.width -= horizScrollbar;\n result.height -= vertScrollbar;\n }\n\n return getClientRect(result);\n}\n\nfunction getOffsetRectRelativeToArbitraryNode(children, parent) {\n var fixedPosition = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;\n\n var isIE10 = isIE(10);\n var isHTML = parent.nodeName === 'HTML';\n var childrenRect = getBoundingClientRect(children);\n var parentRect = getBoundingClientRect(parent);\n var scrollParent = getScrollParent(children);\n\n var styles = getStyleComputedProperty(parent);\n var borderTopWidth = parseFloat(styles.borderTopWidth);\n var borderLeftWidth = parseFloat(styles.borderLeftWidth);\n\n // In cases where the parent is fixed, we must ignore negative scroll in offset calc\n if (fixedPosition && isHTML) {\n parentRect.top = Math.max(parentRect.top, 0);\n parentRect.left = Math.max(parentRect.left, 0);\n }\n var offsets = getClientRect({\n top: childrenRect.top - parentRect.top - borderTopWidth,\n left: childrenRect.left - parentRect.left - borderLeftWidth,\n width: childrenRect.width,\n height: childrenRect.height\n });\n offsets.marginTop = 0;\n offsets.marginLeft = 0;\n\n // Subtract margins of documentElement in case it's being used as parent\n // we do this only on HTML because it's the only element that behaves\n // differently when margins are applied to it. The margins are included in\n // the box of the documentElement, in the other cases not.\n if (!isIE10 && isHTML) {\n var marginTop = parseFloat(styles.marginTop);\n var marginLeft = parseFloat(styles.marginLeft);\n\n offsets.top -= borderTopWidth - marginTop;\n offsets.bottom -= borderTopWidth - marginTop;\n offsets.left -= borderLeftWidth - marginLeft;\n offsets.right -= borderLeftWidth - marginLeft;\n\n // Attach marginTop and marginLeft because in some circumstances we may need them\n offsets.marginTop = marginTop;\n offsets.marginLeft = marginLeft;\n }\n\n if (isIE10 && !fixedPosition ? parent.contains(scrollParent) : parent === scrollParent && scrollParent.nodeName !== 'BODY') {\n offsets = includeScroll(offsets, parent);\n }\n\n return offsets;\n}\n\nfunction getViewportOffsetRectRelativeToArtbitraryNode(element) {\n var excludeScroll = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;\n\n var html = element.ownerDocument.documentElement;\n var relativeOffset = getOffsetRectRelativeToArbitraryNode(element, html);\n var width = Math.max(html.clientWidth, window.innerWidth || 0);\n var height = Math.max(html.clientHeight, window.innerHeight || 0);\n\n var scrollTop = !excludeScroll ? getScroll(html) : 0;\n var scrollLeft = !excludeScroll ? getScroll(html, 'left') : 0;\n\n var offset = {\n top: scrollTop - relativeOffset.top + relativeOffset.marginTop,\n left: scrollLeft - relativeOffset.left + relativeOffset.marginLeft,\n width: width,\n height: height\n };\n\n return getClientRect(offset);\n}\n\n/**\n * Check if the given element is fixed or is inside a fixed parent\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {Element} customContainer\n * @returns {Boolean} answer to \"isFixed?\"\n */\nfunction isFixed(element) {\n var nodeName = element.nodeName;\n if (nodeName === 'BODY' || nodeName === 'HTML') {\n return false;\n }\n if (getStyleComputedProperty(element, 'position') === 'fixed') {\n return true;\n }\n var parentNode = getParentNode(element);\n if (!parentNode) {\n return false;\n }\n return isFixed(parentNode);\n}\n\n/**\n * Finds the first parent of an element that has a transformed property defined\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} first transformed parent or documentElement\n */\n\nfunction getFixedPositionOffsetParent(element) {\n // This check is needed to avoid errors in case one of the elements isn't defined for any reason\n if (!element || !element.parentElement || isIE()) {\n return document.documentElement;\n }\n var el = element.parentElement;\n while (el && getStyleComputedProperty(el, 'transform') === 'none') {\n el = el.parentElement;\n }\n return el || document.documentElement;\n}\n\n/**\n * Computed the boundaries limits and return them\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} popper\n * @param {HTMLElement} reference\n * @param {number} padding\n * @param {HTMLElement} boundariesElement - Element used to define the boundaries\n * @param {Boolean} fixedPosition - Is in fixed position mode\n * @returns {Object} Coordinates of the boundaries\n */\nfunction getBoundaries(popper, reference, padding, boundariesElement) {\n var fixedPosition = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : false;\n\n // NOTE: 1 DOM access here\n\n var boundaries = { top: 0, left: 0 };\n var offsetParent = fixedPosition ? getFixedPositionOffsetParent(popper) : findCommonOffsetParent(popper, getReferenceNode(reference));\n\n // Handle viewport case\n if (boundariesElement === 'viewport') {\n boundaries = getViewportOffsetRectRelativeToArtbitraryNode(offsetParent, fixedPosition);\n } else {\n // Handle other cases based on DOM element used as boundaries\n var boundariesNode = void 0;\n if (boundariesElement === 'scrollParent') {\n boundariesNode = getScrollParent(getParentNode(reference));\n if (boundariesNode.nodeName === 'BODY') {\n boundariesNode = popper.ownerDocument.documentElement;\n }\n } else if (boundariesElement === 'window') {\n boundariesNode = popper.ownerDocument.documentElement;\n } else {\n boundariesNode = boundariesElement;\n }\n\n var offsets = getOffsetRectRelativeToArbitraryNode(boundariesNode, offsetParent, fixedPosition);\n\n // In case of HTML, we need a different computation\n if (boundariesNode.nodeName === 'HTML' && !isFixed(offsetParent)) {\n var _getWindowSizes = getWindowSizes(popper.ownerDocument),\n height = _getWindowSizes.height,\n width = _getWindowSizes.width;\n\n boundaries.top += offsets.top - offsets.marginTop;\n boundaries.bottom = height + offsets.top;\n boundaries.left += offsets.left - offsets.marginLeft;\n boundaries.right = width + offsets.left;\n } else {\n // for all the other DOM elements, this one is good\n boundaries = offsets;\n }\n }\n\n // Add paddings\n padding = padding || 0;\n var isPaddingNumber = typeof padding === 'number';\n boundaries.left += isPaddingNumber ? padding : padding.left || 0;\n boundaries.top += isPaddingNumber ? padding : padding.top || 0;\n boundaries.right -= isPaddingNumber ? padding : padding.right || 0;\n boundaries.bottom -= isPaddingNumber ? padding : padding.bottom || 0;\n\n return boundaries;\n}\n\nfunction getArea(_ref) {\n var width = _ref.width,\n height = _ref.height;\n\n return width * height;\n}\n\n/**\n * Utility used to transform the `auto` placement to the placement with more\n * available space.\n * @method\n * @memberof Popper.Utils\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nfunction computeAutoPlacement(placement, refRect, popper, reference, boundariesElement) {\n var padding = arguments.length > 5 && arguments[5] !== undefined ? arguments[5] : 0;\n\n if (placement.indexOf('auto') === -1) {\n return placement;\n }\n\n var boundaries = getBoundaries(popper, reference, padding, boundariesElement);\n\n var rects = {\n top: {\n width: boundaries.width,\n height: refRect.top - boundaries.top\n },\n right: {\n width: boundaries.right - refRect.right,\n height: boundaries.height\n },\n bottom: {\n width: boundaries.width,\n height: boundaries.bottom - refRect.bottom\n },\n left: {\n width: refRect.left - boundaries.left,\n height: boundaries.height\n }\n };\n\n var sortedAreas = Object.keys(rects).map(function (key) {\n return _extends({\n key: key\n }, rects[key], {\n area: getArea(rects[key])\n });\n }).sort(function (a, b) {\n return b.area - a.area;\n });\n\n var filteredAreas = sortedAreas.filter(function (_ref2) {\n var width = _ref2.width,\n height = _ref2.height;\n return width >= popper.clientWidth && height >= popper.clientHeight;\n });\n\n var computedPlacement = filteredAreas.length > 0 ? filteredAreas[0].key : sortedAreas[0].key;\n\n var variation = placement.split('-')[1];\n\n return computedPlacement + (variation ? '-' + variation : '');\n}\n\n/**\n * Get offsets to the reference element\n * @method\n * @memberof Popper.Utils\n * @param {Object} state\n * @param {Element} popper - the popper element\n * @param {Element} reference - the reference element (the popper will be relative to this)\n * @param {Element} fixedPosition - is in fixed position mode\n * @returns {Object} An object containing the offsets which will be applied to the popper\n */\nfunction getReferenceOffsets(state, popper, reference) {\n var fixedPosition = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : null;\n\n var commonOffsetParent = fixedPosition ? getFixedPositionOffsetParent(popper) : findCommonOffsetParent(popper, getReferenceNode(reference));\n return getOffsetRectRelativeToArbitraryNode(reference, commonOffsetParent, fixedPosition);\n}\n\n/**\n * Get the outer sizes of the given element (offset size + margins)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Object} object containing width and height properties\n */\nfunction getOuterSizes(element) {\n var window = element.ownerDocument.defaultView;\n var styles = window.getComputedStyle(element);\n var x = parseFloat(styles.marginTop || 0) + parseFloat(styles.marginBottom || 0);\n var y = parseFloat(styles.marginLeft || 0) + parseFloat(styles.marginRight || 0);\n var result = {\n width: element.offsetWidth + y,\n height: element.offsetHeight + x\n };\n return result;\n}\n\n/**\n * Get the opposite placement of the given one\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement\n * @returns {String} flipped placement\n */\nfunction getOppositePlacement(placement) {\n var hash = { left: 'right', right: 'left', bottom: 'top', top: 'bottom' };\n return placement.replace(/left|right|bottom|top/g, function (matched) {\n return hash[matched];\n });\n}\n\n/**\n * Get offsets to the popper\n * @method\n * @memberof Popper.Utils\n * @param {Object} position - CSS position the Popper will get applied\n * @param {HTMLElement} popper - the popper element\n * @param {Object} referenceOffsets - the reference offsets (the popper will be relative to this)\n * @param {String} placement - one of the valid placement options\n * @returns {Object} popperOffsets - An object containing the offsets which will be applied to the popper\n */\nfunction getPopperOffsets(popper, referenceOffsets, placement) {\n placement = placement.split('-')[0];\n\n // Get popper node sizes\n var popperRect = getOuterSizes(popper);\n\n // Add position, width and height to our offsets object\n var popperOffsets = {\n width: popperRect.width,\n height: popperRect.height\n };\n\n // depending by the popper placement we have to compute its offsets slightly differently\n var isHoriz = ['right', 'left'].indexOf(placement) !== -1;\n var mainSide = isHoriz ? 'top' : 'left';\n var secondarySide = isHoriz ? 'left' : 'top';\n var measurement = isHoriz ? 'height' : 'width';\n var secondaryMeasurement = !isHoriz ? 'height' : 'width';\n\n popperOffsets[mainSide] = referenceOffsets[mainSide] + referenceOffsets[measurement] / 2 - popperRect[measurement] / 2;\n if (placement === secondarySide) {\n popperOffsets[secondarySide] = referenceOffsets[secondarySide] - popperRect[secondaryMeasurement];\n } else {\n popperOffsets[secondarySide] = referenceOffsets[getOppositePlacement(secondarySide)];\n }\n\n return popperOffsets;\n}\n\n/**\n * Mimics the `find` method of Array\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n */\nfunction find(arr, check) {\n // use native find if supported\n if (Array.prototype.find) {\n return arr.find(check);\n }\n\n // use `filter` to obtain the same behavior of `find`\n return arr.filter(check)[0];\n}\n\n/**\n * Return the index of the matching object\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n */\nfunction findIndex(arr, prop, value) {\n // use native findIndex if supported\n if (Array.prototype.findIndex) {\n return arr.findIndex(function (cur) {\n return cur[prop] === value;\n });\n }\n\n // use `find` + `indexOf` if `findIndex` isn't supported\n var match = find(arr, function (obj) {\n return obj[prop] === value;\n });\n return arr.indexOf(match);\n}\n\n/**\n * Loop trough the list of modifiers and run them in order,\n * each of them will then edit the data object.\n * @method\n * @memberof Popper.Utils\n * @param {dataObject} data\n * @param {Array} modifiers\n * @param {String} ends - Optional modifier name used as stopper\n * @returns {dataObject}\n */\nfunction runModifiers(modifiers, data, ends) {\n var modifiersToRun = ends === undefined ? modifiers : modifiers.slice(0, findIndex(modifiers, 'name', ends));\n\n modifiersToRun.forEach(function (modifier) {\n if (modifier['function']) {\n // eslint-disable-line dot-notation\n console.warn('`modifier.function` is deprecated, use `modifier.fn`!');\n }\n var fn = modifier['function'] || modifier.fn; // eslint-disable-line dot-notation\n if (modifier.enabled && isFunction(fn)) {\n // Add properties to offsets to make them a complete clientRect object\n // we do this before each modifier to make sure the previous one doesn't\n // mess with these values\n data.offsets.popper = getClientRect(data.offsets.popper);\n data.offsets.reference = getClientRect(data.offsets.reference);\n\n data = fn(data, modifier);\n }\n });\n\n return data;\n}\n\n/**\n * Updates the position of the popper, computing the new offsets and applying\n * the new style.
\n * Prefer `scheduleUpdate` over `update` because of performance reasons.\n * @method\n * @memberof Popper\n */\nfunction update() {\n // if popper is destroyed, don't perform any further update\n if (this.state.isDestroyed) {\n return;\n }\n\n var data = {\n instance: this,\n styles: {},\n arrowStyles: {},\n attributes: {},\n flipped: false,\n offsets: {}\n };\n\n // compute reference element offsets\n data.offsets.reference = getReferenceOffsets(this.state, this.popper, this.reference, this.options.positionFixed);\n\n // compute auto placement, store placement inside the data object,\n // modifiers will be able to edit `placement` if needed\n // and refer to originalPlacement to know the original value\n data.placement = computeAutoPlacement(this.options.placement, data.offsets.reference, this.popper, this.reference, this.options.modifiers.flip.boundariesElement, this.options.modifiers.flip.padding);\n\n // store the computed placement inside `originalPlacement`\n data.originalPlacement = data.placement;\n\n data.positionFixed = this.options.positionFixed;\n\n // compute the popper offsets\n data.offsets.popper = getPopperOffsets(this.popper, data.offsets.reference, data.placement);\n\n data.offsets.popper.position = this.options.positionFixed ? 'fixed' : 'absolute';\n\n // run the modifiers\n data = runModifiers(this.modifiers, data);\n\n // the first `update` will call `onCreate` callback\n // the other ones will call `onUpdate` callback\n if (!this.state.isCreated) {\n this.state.isCreated = true;\n this.options.onCreate(data);\n } else {\n this.options.onUpdate(data);\n }\n}\n\n/**\n * Helper used to know if the given modifier is enabled.\n * @method\n * @memberof Popper.Utils\n * @returns {Boolean}\n */\nfunction isModifierEnabled(modifiers, modifierName) {\n return modifiers.some(function (_ref) {\n var name = _ref.name,\n enabled = _ref.enabled;\n return enabled && name === modifierName;\n });\n}\n\n/**\n * Get the prefixed supported property name\n * @method\n * @memberof Popper.Utils\n * @argument {String} property (camelCase)\n * @returns {String} prefixed property (camelCase or PascalCase, depending on the vendor prefix)\n */\nfunction getSupportedPropertyName(property) {\n var prefixes = [false, 'ms', 'Webkit', 'Moz', 'O'];\n var upperProp = property.charAt(0).toUpperCase() + property.slice(1);\n\n for (var i = 0; i < prefixes.length; i++) {\n var prefix = prefixes[i];\n var toCheck = prefix ? '' + prefix + upperProp : property;\n if (typeof document.body.style[toCheck] !== 'undefined') {\n return toCheck;\n }\n }\n return null;\n}\n\n/**\n * Destroys the popper.\n * @method\n * @memberof Popper\n */\nfunction destroy() {\n this.state.isDestroyed = true;\n\n // touch DOM only if `applyStyle` modifier is enabled\n if (isModifierEnabled(this.modifiers, 'applyStyle')) {\n this.popper.removeAttribute('x-placement');\n this.popper.style.position = '';\n this.popper.style.top = '';\n this.popper.style.left = '';\n this.popper.style.right = '';\n this.popper.style.bottom = '';\n this.popper.style.willChange = '';\n this.popper.style[getSupportedPropertyName('transform')] = '';\n }\n\n this.disableEventListeners();\n\n // remove the popper if user explicitly asked for the deletion on destroy\n // do not use `remove` because IE11 doesn't support it\n if (this.options.removeOnDestroy) {\n this.popper.parentNode.removeChild(this.popper);\n }\n return this;\n}\n\n/**\n * Get the window associated with the element\n * @argument {Element} element\n * @returns {Window}\n */\nfunction getWindow(element) {\n var ownerDocument = element.ownerDocument;\n return ownerDocument ? ownerDocument.defaultView : window;\n}\n\nfunction attachToScrollParents(scrollParent, event, callback, scrollParents) {\n var isBody = scrollParent.nodeName === 'BODY';\n var target = isBody ? scrollParent.ownerDocument.defaultView : scrollParent;\n target.addEventListener(event, callback, { passive: true });\n\n if (!isBody) {\n attachToScrollParents(getScrollParent(target.parentNode), event, callback, scrollParents);\n }\n scrollParents.push(target);\n}\n\n/**\n * Setup needed event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n */\nfunction setupEventListeners(reference, options, state, updateBound) {\n // Resize event listener on window\n state.updateBound = updateBound;\n getWindow(reference).addEventListener('resize', state.updateBound, { passive: true });\n\n // Scroll event listener on scroll parents\n var scrollElement = getScrollParent(reference);\n attachToScrollParents(scrollElement, 'scroll', state.updateBound, state.scrollParents);\n state.scrollElement = scrollElement;\n state.eventsEnabled = true;\n\n return state;\n}\n\n/**\n * It will add resize/scroll events and start recalculating\n * position of the popper element when they are triggered.\n * @method\n * @memberof Popper\n */\nfunction enableEventListeners() {\n if (!this.state.eventsEnabled) {\n this.state = setupEventListeners(this.reference, this.options, this.state, this.scheduleUpdate);\n }\n}\n\n/**\n * Remove event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n */\nfunction removeEventListeners(reference, state) {\n // Remove resize event listener on window\n getWindow(reference).removeEventListener('resize', state.updateBound);\n\n // Remove scroll event listener on scroll parents\n state.scrollParents.forEach(function (target) {\n target.removeEventListener('scroll', state.updateBound);\n });\n\n // Reset state\n state.updateBound = null;\n state.scrollParents = [];\n state.scrollElement = null;\n state.eventsEnabled = false;\n return state;\n}\n\n/**\n * It will remove resize/scroll events and won't recalculate popper position\n * when they are triggered. It also won't trigger `onUpdate` callback anymore,\n * unless you call `update` method manually.\n * @method\n * @memberof Popper\n */\nfunction disableEventListeners() {\n if (this.state.eventsEnabled) {\n cancelAnimationFrame(this.scheduleUpdate);\n this.state = removeEventListeners(this.reference, this.state);\n }\n}\n\n/**\n * Tells if a given input is a number\n * @method\n * @memberof Popper.Utils\n * @param {*} input to check\n * @return {Boolean}\n */\nfunction isNumeric(n) {\n return n !== '' && !isNaN(parseFloat(n)) && isFinite(n);\n}\n\n/**\n * Set the style to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the style to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n */\nfunction setStyles(element, styles) {\n Object.keys(styles).forEach(function (prop) {\n var unit = '';\n // add unit if the value is numeric and is one of the following\n if (['width', 'height', 'top', 'right', 'bottom', 'left'].indexOf(prop) !== -1 && isNumeric(styles[prop])) {\n unit = 'px';\n }\n element.style[prop] = styles[prop] + unit;\n });\n}\n\n/**\n * Set the attributes to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the attributes to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n */\nfunction setAttributes(element, attributes) {\n Object.keys(attributes).forEach(function (prop) {\n var value = attributes[prop];\n if (value !== false) {\n element.setAttribute(prop, attributes[prop]);\n } else {\n element.removeAttribute(prop);\n }\n });\n}\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} data.styles - List of style properties - values to apply to popper element\n * @argument {Object} data.attributes - List of attribute properties - values to apply to popper element\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The same data object\n */\nfunction applyStyle(data) {\n // any property present in `data.styles` will be applied to the popper,\n // in this way we can make the 3rd party modifiers add custom styles to it\n // Be aware, modifiers could override the properties defined in the previous\n // lines of this modifier!\n setStyles(data.instance.popper, data.styles);\n\n // any property present in `data.attributes` will be applied to the popper,\n // they will be set as HTML attributes of the element\n setAttributes(data.instance.popper, data.attributes);\n\n // if arrowElement is defined and arrowStyles has some properties\n if (data.arrowElement && Object.keys(data.arrowStyles).length) {\n setStyles(data.arrowElement, data.arrowStyles);\n }\n\n return data;\n}\n\n/**\n * Set the x-placement attribute before everything else because it could be used\n * to add margins to the popper margins needs to be calculated to get the\n * correct popper offsets.\n * @method\n * @memberof Popper.modifiers\n * @param {HTMLElement} reference - The reference element used to position the popper\n * @param {HTMLElement} popper - The HTML element used as popper\n * @param {Object} options - Popper.js options\n */\nfunction applyStyleOnLoad(reference, popper, options, modifierOptions, state) {\n // compute reference element offsets\n var referenceOffsets = getReferenceOffsets(state, popper, reference, options.positionFixed);\n\n // compute auto placement, store placement inside the data object,\n // modifiers will be able to edit `placement` if needed\n // and refer to originalPlacement to know the original value\n var placement = computeAutoPlacement(options.placement, referenceOffsets, popper, reference, options.modifiers.flip.boundariesElement, options.modifiers.flip.padding);\n\n popper.setAttribute('x-placement', placement);\n\n // Apply `position` to popper before anything else because\n // without the position applied we can't guarantee correct computations\n setStyles(popper, { position: options.positionFixed ? 'fixed' : 'absolute' });\n\n return options;\n}\n\n/**\n * @function\n * @memberof Popper.Utils\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Boolean} shouldRound - If the offsets should be rounded at all\n * @returns {Object} The popper's position offsets rounded\n *\n * The tale of pixel-perfect positioning. It's still not 100% perfect, but as\n * good as it can be within reason.\n * Discussion here: https://github.com/FezVrasta/popper.js/pull/715\n *\n * Low DPI screens cause a popper to be blurry if not using full pixels (Safari\n * as well on High DPI screens).\n *\n * Firefox prefers no rounding for positioning and does not have blurriness on\n * high DPI screens.\n *\n * Only horizontal placement and left/right values need to be considered.\n */\nfunction getRoundedOffsets(data, shouldRound) {\n var _data$offsets = data.offsets,\n popper = _data$offsets.popper,\n reference = _data$offsets.reference;\n var round = Math.round,\n floor = Math.floor;\n\n var noRound = function noRound(v) {\n return v;\n };\n\n var referenceWidth = round(reference.width);\n var popperWidth = round(popper.width);\n\n var isVertical = ['left', 'right'].indexOf(data.placement) !== -1;\n var isVariation = data.placement.indexOf('-') !== -1;\n var sameWidthParity = referenceWidth % 2 === popperWidth % 2;\n var bothOddWidth = referenceWidth % 2 === 1 && popperWidth % 2 === 1;\n\n var horizontalToInteger = !shouldRound ? noRound : isVertical || isVariation || sameWidthParity ? round : floor;\n var verticalToInteger = !shouldRound ? noRound : round;\n\n return {\n left: horizontalToInteger(bothOddWidth && !isVariation && shouldRound ? popper.left - 1 : popper.left),\n top: verticalToInteger(popper.top),\n bottom: verticalToInteger(popper.bottom),\n right: horizontalToInteger(popper.right)\n };\n}\n\nvar isFirefox = isBrowser && /Firefox/i.test(navigator.userAgent);\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nfunction computeStyle(data, options) {\n var x = options.x,\n y = options.y;\n var popper = data.offsets.popper;\n\n // Remove this legacy support in Popper.js v2\n\n var legacyGpuAccelerationOption = find(data.instance.modifiers, function (modifier) {\n return modifier.name === 'applyStyle';\n }).gpuAcceleration;\n if (legacyGpuAccelerationOption !== undefined) {\n console.warn('WARNING: `gpuAcceleration` option moved to `computeStyle` modifier and will not be supported in future versions of Popper.js!');\n }\n var gpuAcceleration = legacyGpuAccelerationOption !== undefined ? legacyGpuAccelerationOption : options.gpuAcceleration;\n\n var offsetParent = getOffsetParent(data.instance.popper);\n var offsetParentRect = getBoundingClientRect(offsetParent);\n\n // Styles\n var styles = {\n position: popper.position\n };\n\n var offsets = getRoundedOffsets(data, window.devicePixelRatio < 2 || !isFirefox);\n\n var sideA = x === 'bottom' ? 'top' : 'bottom';\n var sideB = y === 'right' ? 'left' : 'right';\n\n // if gpuAcceleration is set to `true` and transform is supported,\n // we use `translate3d` to apply the position to the popper we\n // automatically use the supported prefixed version if needed\n var prefixedProperty = getSupportedPropertyName('transform');\n\n // now, let's make a step back and look at this code closely (wtf?)\n // If the content of the popper grows once it's been positioned, it\n // may happen that the popper gets misplaced because of the new content\n // overflowing its reference element\n // To avoid this problem, we provide two options (x and y), which allow\n // the consumer to define the offset origin.\n // If we position a popper on top of a reference element, we can set\n // `x` to `top` to make the popper grow towards its top instead of\n // its bottom.\n var left = void 0,\n top = void 0;\n if (sideA === 'bottom') {\n // when offsetParent is the positioning is relative to the bottom of the screen (excluding the scrollbar)\n // and not the bottom of the html element\n if (offsetParent.nodeName === 'HTML') {\n top = -offsetParent.clientHeight + offsets.bottom;\n } else {\n top = -offsetParentRect.height + offsets.bottom;\n }\n } else {\n top = offsets.top;\n }\n if (sideB === 'right') {\n if (offsetParent.nodeName === 'HTML') {\n left = -offsetParent.clientWidth + offsets.right;\n } else {\n left = -offsetParentRect.width + offsets.right;\n }\n } else {\n left = offsets.left;\n }\n if (gpuAcceleration && prefixedProperty) {\n styles[prefixedProperty] = 'translate3d(' + left + 'px, ' + top + 'px, 0)';\n styles[sideA] = 0;\n styles[sideB] = 0;\n styles.willChange = 'transform';\n } else {\n // othwerise, we use the standard `top`, `left`, `bottom` and `right` properties\n var invertTop = sideA === 'bottom' ? -1 : 1;\n var invertLeft = sideB === 'right' ? -1 : 1;\n styles[sideA] = top * invertTop;\n styles[sideB] = left * invertLeft;\n styles.willChange = sideA + ', ' + sideB;\n }\n\n // Attributes\n var attributes = {\n 'x-placement': data.placement\n };\n\n // Update `data` attributes, styles and arrowStyles\n data.attributes = _extends({}, attributes, data.attributes);\n data.styles = _extends({}, styles, data.styles);\n data.arrowStyles = _extends({}, data.offsets.arrow, data.arrowStyles);\n\n return data;\n}\n\n/**\n * Helper used to know if the given modifier depends from another one.
\n * It checks if the needed modifier is listed and enabled.\n * @method\n * @memberof Popper.Utils\n * @param {Array} modifiers - list of modifiers\n * @param {String} requestingName - name of requesting modifier\n * @param {String} requestedName - name of requested modifier\n * @returns {Boolean}\n */\nfunction isModifierRequired(modifiers, requestingName, requestedName) {\n var requesting = find(modifiers, function (_ref) {\n var name = _ref.name;\n return name === requestingName;\n });\n\n var isRequired = !!requesting && modifiers.some(function (modifier) {\n return modifier.name === requestedName && modifier.enabled && modifier.order < requesting.order;\n });\n\n if (!isRequired) {\n var _requesting = '`' + requestingName + '`';\n var requested = '`' + requestedName + '`';\n console.warn(requested + ' modifier is required by ' + _requesting + ' modifier in order to work, be sure to include it before ' + _requesting + '!');\n }\n return isRequired;\n}\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nfunction arrow(data, options) {\n var _data$offsets$arrow;\n\n // arrow depends on keepTogether in order to work\n if (!isModifierRequired(data.instance.modifiers, 'arrow', 'keepTogether')) {\n return data;\n }\n\n var arrowElement = options.element;\n\n // if arrowElement is a string, suppose it's a CSS selector\n if (typeof arrowElement === 'string') {\n arrowElement = data.instance.popper.querySelector(arrowElement);\n\n // if arrowElement is not found, don't run the modifier\n if (!arrowElement) {\n return data;\n }\n } else {\n // if the arrowElement isn't a query selector we must check that the\n // provided DOM node is child of its popper node\n if (!data.instance.popper.contains(arrowElement)) {\n console.warn('WARNING: `arrow.element` must be child of its popper element!');\n return data;\n }\n }\n\n var placement = data.placement.split('-')[0];\n var _data$offsets = data.offsets,\n popper = _data$offsets.popper,\n reference = _data$offsets.reference;\n\n var isVertical = ['left', 'right'].indexOf(placement) !== -1;\n\n var len = isVertical ? 'height' : 'width';\n var sideCapitalized = isVertical ? 'Top' : 'Left';\n var side = sideCapitalized.toLowerCase();\n var altSide = isVertical ? 'left' : 'top';\n var opSide = isVertical ? 'bottom' : 'right';\n var arrowElementSize = getOuterSizes(arrowElement)[len];\n\n //\n // extends keepTogether behavior making sure the popper and its\n // reference have enough pixels in conjunction\n //\n\n // top/left side\n if (reference[opSide] - arrowElementSize < popper[side]) {\n data.offsets.popper[side] -= popper[side] - (reference[opSide] - arrowElementSize);\n }\n // bottom/right side\n if (reference[side] + arrowElementSize > popper[opSide]) {\n data.offsets.popper[side] += reference[side] + arrowElementSize - popper[opSide];\n }\n data.offsets.popper = getClientRect(data.offsets.popper);\n\n // compute center of the popper\n var center = reference[side] + reference[len] / 2 - arrowElementSize / 2;\n\n // Compute the sideValue using the updated popper offsets\n // take popper margin in account because we don't have this info available\n var css = getStyleComputedProperty(data.instance.popper);\n var popperMarginSide = parseFloat(css['margin' + sideCapitalized]);\n var popperBorderSide = parseFloat(css['border' + sideCapitalized + 'Width']);\n var sideValue = center - data.offsets.popper[side] - popperMarginSide - popperBorderSide;\n\n // prevent arrowElement from being placed not contiguously to its popper\n sideValue = Math.max(Math.min(popper[len] - arrowElementSize, sideValue), 0);\n\n data.arrowElement = arrowElement;\n data.offsets.arrow = (_data$offsets$arrow = {}, defineProperty(_data$offsets$arrow, side, Math.round(sideValue)), defineProperty(_data$offsets$arrow, altSide, ''), _data$offsets$arrow);\n\n return data;\n}\n\n/**\n * Get the opposite placement variation of the given one\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement variation\n * @returns {String} flipped placement variation\n */\nfunction getOppositeVariation(variation) {\n if (variation === 'end') {\n return 'start';\n } else if (variation === 'start') {\n return 'end';\n }\n return variation;\n}\n\n/**\n * List of accepted placements to use as values of the `placement` option.
\n * Valid placements are:\n * - `auto`\n * - `top`\n * - `right`\n * - `bottom`\n * - `left`\n *\n * Each placement can have a variation from this list:\n * - `-start`\n * - `-end`\n *\n * Variations are interpreted easily if you think of them as the left to right\n * written languages. Horizontally (`top` and `bottom`), `start` is left and `end`\n * is right.
\n * Vertically (`left` and `right`), `start` is top and `end` is bottom.\n *\n * Some valid examples are:\n * - `top-end` (on top of reference, right aligned)\n * - `right-start` (on right of reference, top aligned)\n * - `bottom` (on bottom, centered)\n * - `auto-end` (on the side with more space available, alignment depends by placement)\n *\n * @static\n * @type {Array}\n * @enum {String}\n * @readonly\n * @method placements\n * @memberof Popper\n */\nvar placements = ['auto-start', 'auto', 'auto-end', 'top-start', 'top', 'top-end', 'right-start', 'right', 'right-end', 'bottom-end', 'bottom', 'bottom-start', 'left-end', 'left', 'left-start'];\n\n// Get rid of `auto` `auto-start` and `auto-end`\nvar validPlacements = placements.slice(3);\n\n/**\n * Given an initial placement, returns all the subsequent placements\n * clockwise (or counter-clockwise).\n *\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement - A valid placement (it accepts variations)\n * @argument {Boolean} counter - Set to true to walk the placements counterclockwise\n * @returns {Array} placements including their variations\n */\nfunction clockwise(placement) {\n var counter = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;\n\n var index = validPlacements.indexOf(placement);\n var arr = validPlacements.slice(index + 1).concat(validPlacements.slice(0, index));\n return counter ? arr.reverse() : arr;\n}\n\nvar BEHAVIORS = {\n FLIP: 'flip',\n CLOCKWISE: 'clockwise',\n COUNTERCLOCKWISE: 'counterclockwise'\n};\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nfunction flip(data, options) {\n // if `inner` modifier is enabled, we can't use the `flip` modifier\n if (isModifierEnabled(data.instance.modifiers, 'inner')) {\n return data;\n }\n\n if (data.flipped && data.placement === data.originalPlacement) {\n // seems like flip is trying to loop, probably there's not enough space on any of the flippable sides\n return data;\n }\n\n var boundaries = getBoundaries(data.instance.popper, data.instance.reference, options.padding, options.boundariesElement, data.positionFixed);\n\n var placement = data.placement.split('-')[0];\n var placementOpposite = getOppositePlacement(placement);\n var variation = data.placement.split('-')[1] || '';\n\n var flipOrder = [];\n\n switch (options.behavior) {\n case BEHAVIORS.FLIP:\n flipOrder = [placement, placementOpposite];\n break;\n case BEHAVIORS.CLOCKWISE:\n flipOrder = clockwise(placement);\n break;\n case BEHAVIORS.COUNTERCLOCKWISE:\n flipOrder = clockwise(placement, true);\n break;\n default:\n flipOrder = options.behavior;\n }\n\n flipOrder.forEach(function (step, index) {\n if (placement !== step || flipOrder.length === index + 1) {\n return data;\n }\n\n placement = data.placement.split('-')[0];\n placementOpposite = getOppositePlacement(placement);\n\n var popperOffsets = data.offsets.popper;\n var refOffsets = data.offsets.reference;\n\n // using floor because the reference offsets may contain decimals we are not going to consider here\n var floor = Math.floor;\n var overlapsRef = placement === 'left' && floor(popperOffsets.right) > floor(refOffsets.left) || placement === 'right' && floor(popperOffsets.left) < floor(refOffsets.right) || placement === 'top' && floor(popperOffsets.bottom) > floor(refOffsets.top) || placement === 'bottom' && floor(popperOffsets.top) < floor(refOffsets.bottom);\n\n var overflowsLeft = floor(popperOffsets.left) < floor(boundaries.left);\n var overflowsRight = floor(popperOffsets.right) > floor(boundaries.right);\n var overflowsTop = floor(popperOffsets.top) < floor(boundaries.top);\n var overflowsBottom = floor(popperOffsets.bottom) > floor(boundaries.bottom);\n\n var overflowsBoundaries = placement === 'left' && overflowsLeft || placement === 'right' && overflowsRight || placement === 'top' && overflowsTop || placement === 'bottom' && overflowsBottom;\n\n // flip the variation if required\n var isVertical = ['top', 'bottom'].indexOf(placement) !== -1;\n\n // flips variation if reference element overflows boundaries\n var flippedVariationByRef = !!options.flipVariations && (isVertical && variation === 'start' && overflowsLeft || isVertical && variation === 'end' && overflowsRight || !isVertical && variation === 'start' && overflowsTop || !isVertical && variation === 'end' && overflowsBottom);\n\n // flips variation if popper content overflows boundaries\n var flippedVariationByContent = !!options.flipVariationsByContent && (isVertical && variation === 'start' && overflowsRight || isVertical && variation === 'end' && overflowsLeft || !isVertical && variation === 'start' && overflowsBottom || !isVertical && variation === 'end' && overflowsTop);\n\n var flippedVariation = flippedVariationByRef || flippedVariationByContent;\n\n if (overlapsRef || overflowsBoundaries || flippedVariation) {\n // this boolean to detect any flip loop\n data.flipped = true;\n\n if (overlapsRef || overflowsBoundaries) {\n placement = flipOrder[index + 1];\n }\n\n if (flippedVariation) {\n variation = getOppositeVariation(variation);\n }\n\n data.placement = placement + (variation ? '-' + variation : '');\n\n // this object contains `position`, we want to preserve it along with\n // any additional property we may add in the future\n data.offsets.popper = _extends({}, data.offsets.popper, getPopperOffsets(data.instance.popper, data.offsets.reference, data.placement));\n\n data = runModifiers(data.instance.modifiers, data, 'flip');\n }\n });\n return data;\n}\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nfunction keepTogether(data) {\n var _data$offsets = data.offsets,\n popper = _data$offsets.popper,\n reference = _data$offsets.reference;\n\n var placement = data.placement.split('-')[0];\n var floor = Math.floor;\n var isVertical = ['top', 'bottom'].indexOf(placement) !== -1;\n var side = isVertical ? 'right' : 'bottom';\n var opSide = isVertical ? 'left' : 'top';\n var measurement = isVertical ? 'width' : 'height';\n\n if (popper[side] < floor(reference[opSide])) {\n data.offsets.popper[opSide] = floor(reference[opSide]) - popper[measurement];\n }\n if (popper[opSide] > floor(reference[side])) {\n data.offsets.popper[opSide] = floor(reference[side]);\n }\n\n return data;\n}\n\n/**\n * Converts a string containing value + unit into a px value number\n * @function\n * @memberof {modifiers~offset}\n * @private\n * @argument {String} str - Value + unit string\n * @argument {String} measurement - `height` or `width`\n * @argument {Object} popperOffsets\n * @argument {Object} referenceOffsets\n * @returns {Number|String}\n * Value in pixels, or original string if no values were extracted\n */\nfunction toValue(str, measurement, popperOffsets, referenceOffsets) {\n // separate value from unit\n var split = str.match(/((?:\\-|\\+)?\\d*\\.?\\d*)(.*)/);\n var value = +split[1];\n var unit = split[2];\n\n // If it's not a number it's an operator, I guess\n if (!value) {\n return str;\n }\n\n if (unit.indexOf('%') === 0) {\n var element = void 0;\n switch (unit) {\n case '%p':\n element = popperOffsets;\n break;\n case '%':\n case '%r':\n default:\n element = referenceOffsets;\n }\n\n var rect = getClientRect(element);\n return rect[measurement] / 100 * value;\n } else if (unit === 'vh' || unit === 'vw') {\n // if is a vh or vw, we calculate the size based on the viewport\n var size = void 0;\n if (unit === 'vh') {\n size = Math.max(document.documentElement.clientHeight, window.innerHeight || 0);\n } else {\n size = Math.max(document.documentElement.clientWidth, window.innerWidth || 0);\n }\n return size / 100 * value;\n } else {\n // if is an explicit pixel unit, we get rid of the unit and keep the value\n // if is an implicit unit, it's px, and we return just the value\n return value;\n }\n}\n\n/**\n * Parse an `offset` string to extrapolate `x` and `y` numeric offsets.\n * @function\n * @memberof {modifiers~offset}\n * @private\n * @argument {String} offset\n * @argument {Object} popperOffsets\n * @argument {Object} referenceOffsets\n * @argument {String} basePlacement\n * @returns {Array} a two cells array with x and y offsets in numbers\n */\nfunction parseOffset(offset, popperOffsets, referenceOffsets, basePlacement) {\n var offsets = [0, 0];\n\n // Use height if placement is left or right and index is 0 otherwise use width\n // in this way the first offset will use an axis and the second one\n // will use the other one\n var useHeight = ['right', 'left'].indexOf(basePlacement) !== -1;\n\n // Split the offset string to obtain a list of values and operands\n // The regex addresses values with the plus or minus sign in front (+10, -20, etc)\n var fragments = offset.split(/(\\+|\\-)/).map(function (frag) {\n return frag.trim();\n });\n\n // Detect if the offset string contains a pair of values or a single one\n // they could be separated by comma or space\n var divider = fragments.indexOf(find(fragments, function (frag) {\n return frag.search(/,|\\s/) !== -1;\n }));\n\n if (fragments[divider] && fragments[divider].indexOf(',') === -1) {\n console.warn('Offsets separated by white space(s) are deprecated, use a comma (,) instead.');\n }\n\n // If divider is found, we divide the list of values and operands to divide\n // them by ofset X and Y.\n var splitRegex = /\\s*,\\s*|\\s+/;\n var ops = divider !== -1 ? [fragments.slice(0, divider).concat([fragments[divider].split(splitRegex)[0]]), [fragments[divider].split(splitRegex)[1]].concat(fragments.slice(divider + 1))] : [fragments];\n\n // Convert the values with units to absolute pixels to allow our computations\n ops = ops.map(function (op, index) {\n // Most of the units rely on the orientation of the popper\n var measurement = (index === 1 ? !useHeight : useHeight) ? 'height' : 'width';\n var mergeWithPrevious = false;\n return op\n // This aggregates any `+` or `-` sign that aren't considered operators\n // e.g.: 10 + +5 => [10, +, +5]\n .reduce(function (a, b) {\n if (a[a.length - 1] === '' && ['+', '-'].indexOf(b) !== -1) {\n a[a.length - 1] = b;\n mergeWithPrevious = true;\n return a;\n } else if (mergeWithPrevious) {\n a[a.length - 1] += b;\n mergeWithPrevious = false;\n return a;\n } else {\n return a.concat(b);\n }\n }, [])\n // Here we convert the string values into number values (in px)\n .map(function (str) {\n return toValue(str, measurement, popperOffsets, referenceOffsets);\n });\n });\n\n // Loop trough the offsets arrays and execute the operations\n ops.forEach(function (op, index) {\n op.forEach(function (frag, index2) {\n if (isNumeric(frag)) {\n offsets[index] += frag * (op[index2 - 1] === '-' ? -1 : 1);\n }\n });\n });\n return offsets;\n}\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @argument {Number|String} options.offset=0\n * The offset value as described in the modifier description\n * @returns {Object} The data object, properly modified\n */\nfunction offset(data, _ref) {\n var offset = _ref.offset;\n var placement = data.placement,\n _data$offsets = data.offsets,\n popper = _data$offsets.popper,\n reference = _data$offsets.reference;\n\n var basePlacement = placement.split('-')[0];\n\n var offsets = void 0;\n if (isNumeric(+offset)) {\n offsets = [+offset, 0];\n } else {\n offsets = parseOffset(offset, popper, reference, basePlacement);\n }\n\n if (basePlacement === 'left') {\n popper.top += offsets[0];\n popper.left -= offsets[1];\n } else if (basePlacement === 'right') {\n popper.top += offsets[0];\n popper.left += offsets[1];\n } else if (basePlacement === 'top') {\n popper.left += offsets[0];\n popper.top -= offsets[1];\n } else if (basePlacement === 'bottom') {\n popper.left += offsets[0];\n popper.top += offsets[1];\n }\n\n data.popper = popper;\n return data;\n}\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nfunction preventOverflow(data, options) {\n var boundariesElement = options.boundariesElement || getOffsetParent(data.instance.popper);\n\n // If offsetParent is the reference element, we really want to\n // go one step up and use the next offsetParent as reference to\n // avoid to make this modifier completely useless and look like broken\n if (data.instance.reference === boundariesElement) {\n boundariesElement = getOffsetParent(boundariesElement);\n }\n\n // NOTE: DOM access here\n // resets the popper's position so that the document size can be calculated excluding\n // the size of the popper element itself\n var transformProp = getSupportedPropertyName('transform');\n var popperStyles = data.instance.popper.style; // assignment to help minification\n var top = popperStyles.top,\n left = popperStyles.left,\n transform = popperStyles[transformProp];\n\n popperStyles.top = '';\n popperStyles.left = '';\n popperStyles[transformProp] = '';\n\n var boundaries = getBoundaries(data.instance.popper, data.instance.reference, options.padding, boundariesElement, data.positionFixed);\n\n // NOTE: DOM access here\n // restores the original style properties after the offsets have been computed\n popperStyles.top = top;\n popperStyles.left = left;\n popperStyles[transformProp] = transform;\n\n options.boundaries = boundaries;\n\n var order = options.priority;\n var popper = data.offsets.popper;\n\n var check = {\n primary: function primary(placement) {\n var value = popper[placement];\n if (popper[placement] < boundaries[placement] && !options.escapeWithReference) {\n value = Math.max(popper[placement], boundaries[placement]);\n }\n return defineProperty({}, placement, value);\n },\n secondary: function secondary(placement) {\n var mainSide = placement === 'right' ? 'left' : 'top';\n var value = popper[mainSide];\n if (popper[placement] > boundaries[placement] && !options.escapeWithReference) {\n value = Math.min(popper[mainSide], boundaries[placement] - (placement === 'right' ? popper.width : popper.height));\n }\n return defineProperty({}, mainSide, value);\n }\n };\n\n order.forEach(function (placement) {\n var side = ['left', 'top'].indexOf(placement) !== -1 ? 'primary' : 'secondary';\n popper = _extends({}, popper, check[side](placement));\n });\n\n data.offsets.popper = popper;\n\n return data;\n}\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nfunction shift(data) {\n var placement = data.placement;\n var basePlacement = placement.split('-')[0];\n var shiftvariation = placement.split('-')[1];\n\n // if shift shiftvariation is specified, run the modifier\n if (shiftvariation) {\n var _data$offsets = data.offsets,\n reference = _data$offsets.reference,\n popper = _data$offsets.popper;\n\n var isVertical = ['bottom', 'top'].indexOf(basePlacement) !== -1;\n var side = isVertical ? 'left' : 'top';\n var measurement = isVertical ? 'width' : 'height';\n\n var shiftOffsets = {\n start: defineProperty({}, side, reference[side]),\n end: defineProperty({}, side, reference[side] + reference[measurement] - popper[measurement])\n };\n\n data.offsets.popper = _extends({}, popper, shiftOffsets[shiftvariation]);\n }\n\n return data;\n}\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nfunction hide(data) {\n if (!isModifierRequired(data.instance.modifiers, 'hide', 'preventOverflow')) {\n return data;\n }\n\n var refRect = data.offsets.reference;\n var bound = find(data.instance.modifiers, function (modifier) {\n return modifier.name === 'preventOverflow';\n }).boundaries;\n\n if (refRect.bottom < bound.top || refRect.left > bound.right || refRect.top > bound.bottom || refRect.right < bound.left) {\n // Avoid unnecessary DOM access if visibility hasn't changed\n if (data.hide === true) {\n return data;\n }\n\n data.hide = true;\n data.attributes['x-out-of-boundaries'] = '';\n } else {\n // Avoid unnecessary DOM access if visibility hasn't changed\n if (data.hide === false) {\n return data;\n }\n\n data.hide = false;\n data.attributes['x-out-of-boundaries'] = false;\n }\n\n return data;\n}\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nfunction inner(data) {\n var placement = data.placement;\n var basePlacement = placement.split('-')[0];\n var _data$offsets = data.offsets,\n popper = _data$offsets.popper,\n reference = _data$offsets.reference;\n\n var isHoriz = ['left', 'right'].indexOf(basePlacement) !== -1;\n\n var subtractLength = ['top', 'left'].indexOf(basePlacement) === -1;\n\n popper[isHoriz ? 'left' : 'top'] = reference[basePlacement] - (subtractLength ? popper[isHoriz ? 'width' : 'height'] : 0);\n\n data.placement = getOppositePlacement(placement);\n data.offsets.popper = getClientRect(popper);\n\n return data;\n}\n\n/**\n * Modifier function, each modifier can have a function of this type assigned\n * to its `fn` property.
\n * These functions will be called on each update, this means that you must\n * make sure they are performant enough to avoid performance bottlenecks.\n *\n * @function ModifierFn\n * @argument {dataObject} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {dataObject} The data object, properly modified\n */\n\n/**\n * Modifiers are plugins used to alter the behavior of your poppers.
\n * Popper.js uses a set of 9 modifiers to provide all the basic functionalities\n * needed by the library.\n *\n * Usually you don't want to override the `order`, `fn` and `onLoad` props.\n * All the other properties are configurations that could be tweaked.\n * @namespace modifiers\n */\nvar modifiers = {\n /**\n * Modifier used to shift the popper on the start or end of its reference\n * element.
\n * It will read the variation of the `placement` property.
\n * It can be one either `-end` or `-start`.\n * @memberof modifiers\n * @inner\n */\n shift: {\n /** @prop {number} order=100 - Index used to define the order of execution */\n order: 100,\n /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n enabled: true,\n /** @prop {ModifierFn} */\n fn: shift\n },\n\n /**\n * The `offset` modifier can shift your popper on both its axis.\n *\n * It accepts the following units:\n * - `px` or unit-less, interpreted as pixels\n * - `%` or `%r`, percentage relative to the length of the reference element\n * - `%p`, percentage relative to the length of the popper element\n * - `vw`, CSS viewport width unit\n * - `vh`, CSS viewport height unit\n *\n * For length is intended the main axis relative to the placement of the popper.
\n * This means that if the placement is `top` or `bottom`, the length will be the\n * `width`. In case of `left` or `right`, it will be the `height`.\n *\n * You can provide a single value (as `Number` or `String`), or a pair of values\n * as `String` divided by a comma or one (or more) white spaces.
\n * The latter is a deprecated method because it leads to confusion and will be\n * removed in v2.
\n * Additionally, it accepts additions and subtractions between different units.\n * Note that multiplications and divisions aren't supported.\n *\n * Valid examples are:\n * ```\n * 10\n * '10%'\n * '10, 10'\n * '10%, 10'\n * '10 + 10%'\n * '10 - 5vh + 3%'\n * '-10px + 5vh, 5px - 6%'\n * ```\n * > **NB**: If you desire to apply offsets to your poppers in a way that may make them overlap\n * > with their reference element, unfortunately, you will have to disable the `flip` modifier.\n * > You can read more on this at this [issue](https://github.com/FezVrasta/popper.js/issues/373).\n *\n * @memberof modifiers\n * @inner\n */\n offset: {\n /** @prop {number} order=200 - Index used to define the order of execution */\n order: 200,\n /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n enabled: true,\n /** @prop {ModifierFn} */\n fn: offset,\n /** @prop {Number|String} offset=0\n * The offset value as described in the modifier description\n */\n offset: 0\n },\n\n /**\n * Modifier used to prevent the popper from being positioned outside the boundary.\n *\n * A scenario exists where the reference itself is not within the boundaries.
\n * We can say it has \"escaped the boundaries\" — or just \"escaped\".
\n * In this case we need to decide whether the popper should either:\n *\n * - detach from the reference and remain \"trapped\" in the boundaries, or\n * - if it should ignore the boundary and \"escape with its reference\"\n *\n * When `escapeWithReference` is set to`true` and reference is completely\n * outside its boundaries, the popper will overflow (or completely leave)\n * the boundaries in order to remain attached to the edge of the reference.\n *\n * @memberof modifiers\n * @inner\n */\n preventOverflow: {\n /** @prop {number} order=300 - Index used to define the order of execution */\n order: 300,\n /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n enabled: true,\n /** @prop {ModifierFn} */\n fn: preventOverflow,\n /**\n * @prop {Array} [priority=['left','right','top','bottom']]\n * Popper will try to prevent overflow following these priorities by default,\n * then, it could overflow on the left and on top of the `boundariesElement`\n */\n priority: ['left', 'right', 'top', 'bottom'],\n /**\n * @prop {number} padding=5\n * Amount of pixel used to define a minimum distance between the boundaries\n * and the popper. This makes sure the popper always has a little padding\n * between the edges of its container\n */\n padding: 5,\n /**\n * @prop {String|HTMLElement} boundariesElement='scrollParent'\n * Boundaries used by the modifier. Can be `scrollParent`, `window`,\n * `viewport` or any DOM element.\n */\n boundariesElement: 'scrollParent'\n },\n\n /**\n * Modifier used to make sure the reference and its popper stay near each other\n * without leaving any gap between the two. Especially useful when the arrow is\n * enabled and you want to ensure that it points to its reference element.\n * It cares only about the first axis. You can still have poppers with margin\n * between the popper and its reference element.\n * @memberof modifiers\n * @inner\n */\n keepTogether: {\n /** @prop {number} order=400 - Index used to define the order of execution */\n order: 400,\n /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n enabled: true,\n /** @prop {ModifierFn} */\n fn: keepTogether\n },\n\n /**\n * This modifier is used to move the `arrowElement` of the popper to make\n * sure it is positioned between the reference element and its popper element.\n * It will read the outer size of the `arrowElement` node to detect how many\n * pixels of conjunction are needed.\n *\n * It has no effect if no `arrowElement` is provided.\n * @memberof modifiers\n * @inner\n */\n arrow: {\n /** @prop {number} order=500 - Index used to define the order of execution */\n order: 500,\n /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n enabled: true,\n /** @prop {ModifierFn} */\n fn: arrow,\n /** @prop {String|HTMLElement} element='[x-arrow]' - Selector or node used as arrow */\n element: '[x-arrow]'\n },\n\n /**\n * Modifier used to flip the popper's placement when it starts to overlap its\n * reference element.\n *\n * Requires the `preventOverflow` modifier before it in order to work.\n *\n * **NOTE:** this modifier will interrupt the current update cycle and will\n * restart it if it detects the need to flip the placement.\n * @memberof modifiers\n * @inner\n */\n flip: {\n /** @prop {number} order=600 - Index used to define the order of execution */\n order: 600,\n /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n enabled: true,\n /** @prop {ModifierFn} */\n fn: flip,\n /**\n * @prop {String|Array} behavior='flip'\n * The behavior used to change the popper's placement. It can be one of\n * `flip`, `clockwise`, `counterclockwise` or an array with a list of valid\n * placements (with optional variations)\n */\n behavior: 'flip',\n /**\n * @prop {number} padding=5\n * The popper will flip if it hits the edges of the `boundariesElement`\n */\n padding: 5,\n /**\n * @prop {String|HTMLElement} boundariesElement='viewport'\n * The element which will define the boundaries of the popper position.\n * The popper will never be placed outside of the defined boundaries\n * (except if `keepTogether` is enabled)\n */\n boundariesElement: 'viewport',\n /**\n * @prop {Boolean} flipVariations=false\n * The popper will switch placement variation between `-start` and `-end` when\n * the reference element overlaps its boundaries.\n *\n * The original placement should have a set variation.\n */\n flipVariations: false,\n /**\n * @prop {Boolean} flipVariationsByContent=false\n * The popper will switch placement variation between `-start` and `-end` when\n * the popper element overlaps its reference boundaries.\n *\n * The original placement should have a set variation.\n */\n flipVariationsByContent: false\n },\n\n /**\n * Modifier used to make the popper flow toward the inner of the reference element.\n * By default, when this modifier is disabled, the popper will be placed outside\n * the reference element.\n * @memberof modifiers\n * @inner\n */\n inner: {\n /** @prop {number} order=700 - Index used to define the order of execution */\n order: 700,\n /** @prop {Boolean} enabled=false - Whether the modifier is enabled or not */\n enabled: false,\n /** @prop {ModifierFn} */\n fn: inner\n },\n\n /**\n * Modifier used to hide the popper when its reference element is outside of the\n * popper boundaries. It will set a `x-out-of-boundaries` attribute which can\n * be used to hide with a CSS selector the popper when its reference is\n * out of boundaries.\n *\n * Requires the `preventOverflow` modifier before it in order to work.\n * @memberof modifiers\n * @inner\n */\n hide: {\n /** @prop {number} order=800 - Index used to define the order of execution */\n order: 800,\n /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n enabled: true,\n /** @prop {ModifierFn} */\n fn: hide\n },\n\n /**\n * Computes the style that will be applied to the popper element to gets\n * properly positioned.\n *\n * Note that this modifier will not touch the DOM, it just prepares the styles\n * so that `applyStyle` modifier can apply it. This separation is useful\n * in case you need to replace `applyStyle` with a custom implementation.\n *\n * This modifier has `850` as `order` value to maintain backward compatibility\n * with previous versions of Popper.js. Expect the modifiers ordering method\n * to change in future major versions of the library.\n *\n * @memberof modifiers\n * @inner\n */\n computeStyle: {\n /** @prop {number} order=850 - Index used to define the order of execution */\n order: 850,\n /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n enabled: true,\n /** @prop {ModifierFn} */\n fn: computeStyle,\n /**\n * @prop {Boolean} gpuAcceleration=true\n * If true, it uses the CSS 3D transformation to position the popper.\n * Otherwise, it will use the `top` and `left` properties\n */\n gpuAcceleration: true,\n /**\n * @prop {string} [x='bottom']\n * Where to anchor the X axis (`bottom` or `top`). AKA X offset origin.\n * Change this if your popper should grow in a direction different from `bottom`\n */\n x: 'bottom',\n /**\n * @prop {string} [x='left']\n * Where to anchor the Y axis (`left` or `right`). AKA Y offset origin.\n * Change this if your popper should grow in a direction different from `right`\n */\n y: 'right'\n },\n\n /**\n * Applies the computed styles to the popper element.\n *\n * All the DOM manipulations are limited to this modifier. This is useful in case\n * you want to integrate Popper.js inside a framework or view library and you\n * want to delegate all the DOM manipulations to it.\n *\n * Note that if you disable this modifier, you must make sure the popper element\n * has its position set to `absolute` before Popper.js can do its work!\n *\n * Just disable this modifier and define your own to achieve the desired effect.\n *\n * @memberof modifiers\n * @inner\n */\n applyStyle: {\n /** @prop {number} order=900 - Index used to define the order of execution */\n order: 900,\n /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n enabled: true,\n /** @prop {ModifierFn} */\n fn: applyStyle,\n /** @prop {Function} */\n onLoad: applyStyleOnLoad,\n /**\n * @deprecated since version 1.10.0, the property moved to `computeStyle` modifier\n * @prop {Boolean} gpuAcceleration=true\n * If true, it uses the CSS 3D transformation to position the popper.\n * Otherwise, it will use the `top` and `left` properties\n */\n gpuAcceleration: undefined\n }\n};\n\n/**\n * The `dataObject` is an object containing all the information used by Popper.js.\n * This object is passed to modifiers and to the `onCreate` and `onUpdate` callbacks.\n * @name dataObject\n * @property {Object} data.instance The Popper.js instance\n * @property {String} data.placement Placement applied to popper\n * @property {String} data.originalPlacement Placement originally defined on init\n * @property {Boolean} data.flipped True if popper has been flipped by flip modifier\n * @property {Boolean} data.hide True if the reference element is out of boundaries, useful to know when to hide the popper\n * @property {HTMLElement} data.arrowElement Node used as arrow by arrow modifier\n * @property {Object} data.styles Any CSS property defined here will be applied to the popper. It expects the JavaScript nomenclature (eg. `marginBottom`)\n * @property {Object} data.arrowStyles Any CSS property defined here will be applied to the popper arrow. It expects the JavaScript nomenclature (eg. `marginBottom`)\n * @property {Object} data.boundaries Offsets of the popper boundaries\n * @property {Object} data.offsets The measurements of popper, reference and arrow elements\n * @property {Object} data.offsets.popper `top`, `left`, `width`, `height` values\n * @property {Object} data.offsets.reference `top`, `left`, `width`, `height` values\n * @property {Object} data.offsets.arrow] `top` and `left` offsets, only one of them will be different from 0\n */\n\n/**\n * Default options provided to Popper.js constructor.
\n * These can be overridden using the `options` argument of Popper.js.
\n * To override an option, simply pass an object with the same\n * structure of the `options` object, as the 3rd argument. For example:\n * ```\n * new Popper(ref, pop, {\n * modifiers: {\n * preventOverflow: { enabled: false }\n * }\n * })\n * ```\n * @type {Object}\n * @static\n * @memberof Popper\n */\nvar Defaults = {\n /**\n * Popper's placement.\n * @prop {Popper.placements} placement='bottom'\n */\n placement: 'bottom',\n\n /**\n * Set this to true if you want popper to position it self in 'fixed' mode\n * @prop {Boolean} positionFixed=false\n */\n positionFixed: false,\n\n /**\n * Whether events (resize, scroll) are initially enabled.\n * @prop {Boolean} eventsEnabled=true\n */\n eventsEnabled: true,\n\n /**\n * Set to true if you want to automatically remove the popper when\n * you call the `destroy` method.\n * @prop {Boolean} removeOnDestroy=false\n */\n removeOnDestroy: false,\n\n /**\n * Callback called when the popper is created.
\n * By default, it is set to no-op.
\n * Access Popper.js instance with `data.instance`.\n * @prop {onCreate}\n */\n onCreate: function onCreate() {},\n\n /**\n * Callback called when the popper is updated. This callback is not called\n * on the initialization/creation of the popper, but only on subsequent\n * updates.
\n * By default, it is set to no-op.
\n * Access Popper.js instance with `data.instance`.\n * @prop {onUpdate}\n */\n onUpdate: function onUpdate() {},\n\n /**\n * List of modifiers used to modify the offsets before they are applied to the popper.\n * They provide most of the functionalities of Popper.js.\n * @prop {modifiers}\n */\n modifiers: modifiers\n};\n\n/**\n * @callback onCreate\n * @param {dataObject} data\n */\n\n/**\n * @callback onUpdate\n * @param {dataObject} data\n */\n\n// Utils\n// Methods\nvar Popper = function () {\n /**\n * Creates a new Popper.js instance.\n * @class Popper\n * @param {Element|referenceObject} reference - The reference element used to position the popper\n * @param {Element} popper - The HTML / XML element used as the popper\n * @param {Object} options - Your custom options to override the ones defined in [Defaults](#defaults)\n * @return {Object} instance - The generated Popper.js instance\n */\n function Popper(reference, popper) {\n var _this = this;\n\n var options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};\n classCallCheck(this, Popper);\n\n this.scheduleUpdate = function () {\n return requestAnimationFrame(_this.update);\n };\n\n // make update() debounced, so that it only runs at most once-per-tick\n this.update = debounce(this.update.bind(this));\n\n // with {} we create a new object with the options inside it\n this.options = _extends({}, Popper.Defaults, options);\n\n // init state\n this.state = {\n isDestroyed: false,\n isCreated: false,\n scrollParents: []\n };\n\n // get reference and popper elements (allow jQuery wrappers)\n this.reference = reference && reference.jquery ? reference[0] : reference;\n this.popper = popper && popper.jquery ? popper[0] : popper;\n\n // Deep merge modifiers options\n this.options.modifiers = {};\n Object.keys(_extends({}, Popper.Defaults.modifiers, options.modifiers)).forEach(function (name) {\n _this.options.modifiers[name] = _extends({}, Popper.Defaults.modifiers[name] || {}, options.modifiers ? options.modifiers[name] : {});\n });\n\n // Refactoring modifiers' list (Object => Array)\n this.modifiers = Object.keys(this.options.modifiers).map(function (name) {\n return _extends({\n name: name\n }, _this.options.modifiers[name]);\n })\n // sort the modifiers by order\n .sort(function (a, b) {\n return a.order - b.order;\n });\n\n // modifiers have the ability to execute arbitrary code when Popper.js get inited\n // such code is executed in the same order of its modifier\n // they could add new properties to their options configuration\n // BE AWARE: don't add options to `options.modifiers.name` but to `modifierOptions`!\n this.modifiers.forEach(function (modifierOptions) {\n if (modifierOptions.enabled && isFunction(modifierOptions.onLoad)) {\n modifierOptions.onLoad(_this.reference, _this.popper, _this.options, modifierOptions, _this.state);\n }\n });\n\n // fire the first update to position the popper in the right place\n this.update();\n\n var eventsEnabled = this.options.eventsEnabled;\n if (eventsEnabled) {\n // setup event listeners, they will take care of update the position in specific situations\n this.enableEventListeners();\n }\n\n this.state.eventsEnabled = eventsEnabled;\n }\n\n // We can't use class properties because they don't get listed in the\n // class prototype and break stuff like Sinon stubs\n\n\n createClass(Popper, [{\n key: 'update',\n value: function update$$1() {\n return update.call(this);\n }\n }, {\n key: 'destroy',\n value: function destroy$$1() {\n return destroy.call(this);\n }\n }, {\n key: 'enableEventListeners',\n value: function enableEventListeners$$1() {\n return enableEventListeners.call(this);\n }\n }, {\n key: 'disableEventListeners',\n value: function disableEventListeners$$1() {\n return disableEventListeners.call(this);\n }\n\n /**\n * Schedules an update. It will run on the next UI update available.\n * @method scheduleUpdate\n * @memberof Popper\n */\n\n\n /**\n * Collection of utilities useful when writing custom modifiers.\n * Starting from version 1.7, this method is available only if you\n * include `popper-utils.js` before `popper.js`.\n *\n * **DEPRECATION**: This way to access PopperUtils is deprecated\n * and will be removed in v2! Use the PopperUtils module directly instead.\n * Due to the high instability of the methods contained in Utils, we can't\n * guarantee them to follow semver. Use them at your own risk!\n * @static\n * @private\n * @type {Object}\n * @deprecated since version 1.8\n * @member Utils\n * @memberof Popper\n */\n\n }]);\n return Popper;\n}();\n\n/**\n * The `referenceObject` is an object that provides an interface compatible with Popper.js\n * and lets you use it as replacement of a real DOM node.
\n * You can use this method to position a popper relatively to a set of coordinates\n * in case you don't have a DOM node to use as reference.\n *\n * ```\n * new Popper(referenceObject, popperNode);\n * ```\n *\n * NB: This feature isn't supported in Internet Explorer 10.\n * @name referenceObject\n * @property {Function} data.getBoundingClientRect\n * A function that returns a set of coordinates compatible with the native `getBoundingClientRect` method.\n * @property {number} data.clientWidth\n * An ES6 getter that will return the width of the virtual reference element.\n * @property {number} data.clientHeight\n * An ES6 getter that will return the height of the virtual reference element.\n */\n\n\nPopper.Utils = (typeof window !== 'undefined' ? window : global).PopperUtils;\nPopper.placements = placements;\nPopper.Defaults = Defaults;\n\nexport default Popper;\n//# sourceMappingURL=popper.js.map\n","export default typeof window !== 'undefined' && typeof document !== 'undefined' && typeof navigator !== 'undefined';\n","import isBrowser from './isBrowser';\n\nconst timeoutDuration = (function(){\n const longerTimeoutBrowsers = ['Edge', 'Trident', 'Firefox'];\n for (let i = 0; i < longerTimeoutBrowsers.length; i += 1) {\n if (isBrowser && navigator.userAgent.indexOf(longerTimeoutBrowsers[i]) >= 0) {\n return 1;\n }\n }\n return 0;\n}());\n\nexport function microtaskDebounce(fn) {\n let called = false\n return () => {\n if (called) {\n return\n }\n called = true\n window.Promise.resolve().then(() => {\n called = false\n fn()\n })\n }\n}\n\nexport function taskDebounce(fn) {\n let scheduled = false;\n return () => {\n if (!scheduled) {\n scheduled = true;\n setTimeout(() => {\n scheduled = false;\n fn();\n }, timeoutDuration);\n }\n };\n}\n\nconst supportsMicroTasks = isBrowser && window.Promise\n\n\n/**\n* Create a debounced version of a method, that's asynchronously deferred\n* but called in the minimum time possible.\n*\n* @method\n* @memberof Popper.Utils\n* @argument {Function} fn\n* @returns {Function}\n*/\nexport default (supportsMicroTasks\n ? microtaskDebounce\n : taskDebounce);\n","/**\n * Check if the given variable is a function\n * @method\n * @memberof Popper.Utils\n * @argument {Any} functionToCheck - variable to check\n * @returns {Boolean} answer to: is a function?\n */\nexport default function isFunction(functionToCheck) {\n const getType = {};\n return (\n functionToCheck &&\n getType.toString.call(functionToCheck) === '[object Function]'\n );\n}\n","/**\n * Get CSS computed property of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Eement} element\n * @argument {String} property\n */\nexport default function getStyleComputedProperty(element, property) {\n if (element.nodeType !== 1) {\n return [];\n }\n // NOTE: 1 DOM access here\n const window = element.ownerDocument.defaultView;\n const css = window.getComputedStyle(element, null);\n return property ? css[property] : css;\n}\n","/**\n * Returns the parentNode or the host of the element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} parent\n */\nexport default function getParentNode(element) {\n if (element.nodeName === 'HTML') {\n return element;\n }\n return element.parentNode || element.host;\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getParentNode from './getParentNode';\n\n/**\n * Returns the scrolling parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} scroll parent\n */\nexport default function getScrollParent(element) {\n // Return body, `getScroll` will take care to get the correct `scrollTop` from it\n if (!element) {\n return document.body\n }\n\n switch (element.nodeName) {\n case 'HTML':\n case 'BODY':\n return element.ownerDocument.body\n case '#document':\n return element.body\n }\n\n // Firefox want us to check `-x` and `-y` variations as well\n const { overflow, overflowX, overflowY } = getStyleComputedProperty(element);\n if (/(auto|scroll|overlay)/.test(overflow + overflowY + overflowX)) {\n return element;\n }\n\n return getScrollParent(getParentNode(element));\n}\n","/**\n * Returns the reference node of the reference object, or the reference object itself.\n * @method\n * @memberof Popper.Utils\n * @param {Element|Object} reference - the reference element (the popper will be relative to this)\n * @returns {Element} parent\n */\nexport default function getReferenceNode(reference) {\n return reference && reference.referenceNode ? reference.referenceNode : reference;\n}\n","import isBrowser from './isBrowser';\n\nconst isIE11 = isBrowser && !!(window.MSInputMethodContext && document.documentMode);\nconst isIE10 = isBrowser && /MSIE 10/.test(navigator.userAgent);\n\n/**\n * Determines if the browser is Internet Explorer\n * @method\n * @memberof Popper.Utils\n * @param {Number} version to check\n * @returns {Boolean} isIE\n */\nexport default function isIE(version) {\n if (version === 11) {\n return isIE11;\n }\n if (version === 10) {\n return isIE10;\n }\n return isIE11 || isIE10;\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport isIE from './isIE';\n/**\n * Returns the offset parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} offset parent\n */\nexport default function getOffsetParent(element) {\n if (!element) {\n return document.documentElement;\n }\n\n const noOffsetParent = isIE(10) ? document.body : null;\n\n // NOTE: 1 DOM access here\n let offsetParent = element.offsetParent || null;\n // Skip hidden elements which don't have an offsetParent\n while (offsetParent === noOffsetParent && element.nextElementSibling) {\n offsetParent = (element = element.nextElementSibling).offsetParent;\n }\n\n const nodeName = offsetParent && offsetParent.nodeName;\n\n if (!nodeName || nodeName === 'BODY' || nodeName === 'HTML') {\n return element ? element.ownerDocument.documentElement : document.documentElement;\n }\n\n // .offsetParent will return the closest TH, TD or TABLE in case\n // no offsetParent is present, I hate this job...\n if (\n ['TH', 'TD', 'TABLE'].indexOf(offsetParent.nodeName) !== -1 &&\n getStyleComputedProperty(offsetParent, 'position') === 'static'\n ) {\n return getOffsetParent(offsetParent);\n }\n\n return offsetParent;\n}\n","import getOffsetParent from './getOffsetParent';\n\nexport default function isOffsetContainer(element) {\n const { nodeName } = element;\n if (nodeName === 'BODY') {\n return false;\n }\n return (\n nodeName === 'HTML' || getOffsetParent(element.firstElementChild) === element\n );\n}\n","/**\n * Finds the root node (document, shadowDOM root) of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} node\n * @returns {Element} root node\n */\nexport default function getRoot(node) {\n if (node.parentNode !== null) {\n return getRoot(node.parentNode);\n }\n\n return node;\n}\n","import isOffsetContainer from './isOffsetContainer';\nimport getRoot from './getRoot';\nimport getOffsetParent from './getOffsetParent';\n\n/**\n * Finds the offset parent common to the two provided nodes\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element1\n * @argument {Element} element2\n * @returns {Element} common offset parent\n */\nexport default function findCommonOffsetParent(element1, element2) {\n // This check is needed to avoid errors in case one of the elements isn't defined for any reason\n if (!element1 || !element1.nodeType || !element2 || !element2.nodeType) {\n return document.documentElement;\n }\n\n // Here we make sure to give as \"start\" the element that comes first in the DOM\n const order =\n element1.compareDocumentPosition(element2) &\n Node.DOCUMENT_POSITION_FOLLOWING;\n const start = order ? element1 : element2;\n const end = order ? element2 : element1;\n\n // Get common ancestor container\n const range = document.createRange();\n range.setStart(start, 0);\n range.setEnd(end, 0);\n const { commonAncestorContainer } = range;\n\n // Both nodes are inside #document\n if (\n (element1 !== commonAncestorContainer &&\n element2 !== commonAncestorContainer) ||\n start.contains(end)\n ) {\n if (isOffsetContainer(commonAncestorContainer)) {\n return commonAncestorContainer;\n }\n\n return getOffsetParent(commonAncestorContainer);\n }\n\n // one of the nodes is inside shadowDOM, find which one\n const element1root = getRoot(element1);\n if (element1root.host) {\n return findCommonOffsetParent(element1root.host, element2);\n } else {\n return findCommonOffsetParent(element1, getRoot(element2).host);\n }\n}\n","/**\n * Gets the scroll value of the given element in the given side (top and left)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {String} side `top` or `left`\n * @returns {number} amount of scrolled pixels\n */\nexport default function getScroll(element, side = 'top') {\n const upperSide = side === 'top' ? 'scrollTop' : 'scrollLeft';\n const nodeName = element.nodeName;\n\n if (nodeName === 'BODY' || nodeName === 'HTML') {\n const html = element.ownerDocument.documentElement;\n const scrollingElement = element.ownerDocument.scrollingElement || html;\n return scrollingElement[upperSide];\n }\n\n return element[upperSide];\n}\n","import getScroll from './getScroll';\n\n/*\n * Sum or subtract the element scroll values (left and top) from a given rect object\n * @method\n * @memberof Popper.Utils\n * @param {Object} rect - Rect object you want to change\n * @param {HTMLElement} element - The element from the function reads the scroll values\n * @param {Boolean} subtract - set to true if you want to subtract the scroll values\n * @return {Object} rect - The modifier rect object\n */\nexport default function includeScroll(rect, element, subtract = false) {\n const scrollTop = getScroll(element, 'top');\n const scrollLeft = getScroll(element, 'left');\n const modifier = subtract ? -1 : 1;\n rect.top += scrollTop * modifier;\n rect.bottom += scrollTop * modifier;\n rect.left += scrollLeft * modifier;\n rect.right += scrollLeft * modifier;\n return rect;\n}\n","/*\n * Helper to detect borders of a given element\n * @method\n * @memberof Popper.Utils\n * @param {CSSStyleDeclaration} styles\n * Result of `getStyleComputedProperty` on the given element\n * @param {String} axis - `x` or `y`\n * @return {number} borders - The borders size of the given axis\n */\n\nexport default function getBordersSize(styles, axis) {\n const sideA = axis === 'x' ? 'Left' : 'Top';\n const sideB = sideA === 'Left' ? 'Right' : 'Bottom';\n\n return (\n parseFloat(styles[`border${sideA}Width`]) +\n parseFloat(styles[`border${sideB}Width`])\n );\n}\n","import isIE from './isIE';\n\nfunction getSize(axis, body, html, computedStyle) {\n return Math.max(\n body[`offset${axis}`],\n body[`scroll${axis}`],\n html[`client${axis}`],\n html[`offset${axis}`],\n html[`scroll${axis}`],\n isIE(10)\n ? (parseInt(html[`offset${axis}`]) + \n parseInt(computedStyle[`margin${axis === 'Height' ? 'Top' : 'Left'}`]) + \n parseInt(computedStyle[`margin${axis === 'Height' ? 'Bottom' : 'Right'}`]))\n : 0 \n );\n}\n\nexport default function getWindowSizes(document) {\n const body = document.body;\n const html = document.documentElement;\n const computedStyle = isIE(10) && getComputedStyle(html);\n\n return {\n height: getSize('Height', body, html, computedStyle),\n width: getSize('Width', body, html, computedStyle),\n };\n}\n","/**\n * Given element offsets, generate an output similar to getBoundingClientRect\n * @method\n * @memberof Popper.Utils\n * @argument {Object} offsets\n * @returns {Object} ClientRect like output\n */\nexport default function getClientRect(offsets) {\n return {\n ...offsets,\n right: offsets.left + offsets.width,\n bottom: offsets.top + offsets.height,\n };\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getBordersSize from './getBordersSize';\nimport getWindowSizes from './getWindowSizes';\nimport getScroll from './getScroll';\nimport getClientRect from './getClientRect';\nimport isIE from './isIE';\n\n/**\n * Get bounding client rect of given element\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} element\n * @return {Object} client rect\n */\nexport default function getBoundingClientRect(element) {\n let rect = {};\n\n // IE10 10 FIX: Please, don't ask, the element isn't\n // considered in DOM in some circumstances...\n // This isn't reproducible in IE10 compatibility mode of IE11\n try {\n if (isIE(10)) {\n rect = element.getBoundingClientRect();\n const scrollTop = getScroll(element, 'top');\n const scrollLeft = getScroll(element, 'left');\n rect.top += scrollTop;\n rect.left += scrollLeft;\n rect.bottom += scrollTop;\n rect.right += scrollLeft;\n }\n else {\n rect = element.getBoundingClientRect();\n }\n }\n catch(e){}\n\n const result = {\n left: rect.left,\n top: rect.top,\n width: rect.right - rect.left,\n height: rect.bottom - rect.top,\n };\n\n // subtract scrollbar size from sizes\n const sizes = element.nodeName === 'HTML' ? getWindowSizes(element.ownerDocument) : {};\n const width =\n sizes.width || element.clientWidth || result.width;\n const height =\n sizes.height || element.clientHeight || result.height;\n\n let horizScrollbar = element.offsetWidth - width;\n let vertScrollbar = element.offsetHeight - height;\n\n // if an hypothetical scrollbar is detected, we must be sure it's not a `border`\n // we make this check conditional for performance reasons\n if (horizScrollbar || vertScrollbar) {\n const styles = getStyleComputedProperty(element);\n horizScrollbar -= getBordersSize(styles, 'x');\n vertScrollbar -= getBordersSize(styles, 'y');\n\n result.width -= horizScrollbar;\n result.height -= vertScrollbar;\n }\n\n return getClientRect(result);\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport includeScroll from './includeScroll';\nimport getScrollParent from './getScrollParent';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport runIsIE from './isIE';\nimport getClientRect from './getClientRect';\n\nexport default function getOffsetRectRelativeToArbitraryNode(children, parent, fixedPosition = false) {\n const isIE10 = runIsIE(10);\n const isHTML = parent.nodeName === 'HTML';\n const childrenRect = getBoundingClientRect(children);\n const parentRect = getBoundingClientRect(parent);\n const scrollParent = getScrollParent(children);\n\n const styles = getStyleComputedProperty(parent);\n const borderTopWidth = parseFloat(styles.borderTopWidth);\n const borderLeftWidth = parseFloat(styles.borderLeftWidth);\n\n // In cases where the parent is fixed, we must ignore negative scroll in offset calc\n if(fixedPosition && isHTML) {\n parentRect.top = Math.max(parentRect.top, 0);\n parentRect.left = Math.max(parentRect.left, 0);\n }\n let offsets = getClientRect({\n top: childrenRect.top - parentRect.top - borderTopWidth,\n left: childrenRect.left - parentRect.left - borderLeftWidth,\n width: childrenRect.width,\n height: childrenRect.height,\n });\n offsets.marginTop = 0;\n offsets.marginLeft = 0;\n\n // Subtract margins of documentElement in case it's being used as parent\n // we do this only on HTML because it's the only element that behaves\n // differently when margins are applied to it. The margins are included in\n // the box of the documentElement, in the other cases not.\n if (!isIE10 && isHTML) {\n const marginTop = parseFloat(styles.marginTop);\n const marginLeft = parseFloat(styles.marginLeft);\n\n offsets.top -= borderTopWidth - marginTop;\n offsets.bottom -= borderTopWidth - marginTop;\n offsets.left -= borderLeftWidth - marginLeft;\n offsets.right -= borderLeftWidth - marginLeft;\n\n // Attach marginTop and marginLeft because in some circumstances we may need them\n offsets.marginTop = marginTop;\n offsets.marginLeft = marginLeft;\n }\n\n if (\n isIE10 && !fixedPosition\n ? parent.contains(scrollParent)\n : parent === scrollParent && scrollParent.nodeName !== 'BODY'\n ) {\n offsets = includeScroll(offsets, parent);\n }\n\n return offsets;\n}\n","import getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getScroll from './getScroll';\nimport getClientRect from './getClientRect';\n\nexport default function getViewportOffsetRectRelativeToArtbitraryNode(element, excludeScroll = false) {\n const html = element.ownerDocument.documentElement;\n const relativeOffset = getOffsetRectRelativeToArbitraryNode(element, html);\n const width = Math.max(html.clientWidth, window.innerWidth || 0);\n const height = Math.max(html.clientHeight, window.innerHeight || 0);\n\n const scrollTop = !excludeScroll ? getScroll(html) : 0;\n const scrollLeft = !excludeScroll ? getScroll(html, 'left') : 0;\n\n const offset = {\n top: scrollTop - relativeOffset.top + relativeOffset.marginTop,\n left: scrollLeft - relativeOffset.left + relativeOffset.marginLeft,\n width,\n height,\n };\n\n return getClientRect(offset);\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getParentNode from './getParentNode';\n\n/**\n * Check if the given element is fixed or is inside a fixed parent\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {Element} customContainer\n * @returns {Boolean} answer to \"isFixed?\"\n */\nexport default function isFixed(element) {\n const nodeName = element.nodeName;\n if (nodeName === 'BODY' || nodeName === 'HTML') {\n return false;\n }\n if (getStyleComputedProperty(element, 'position') === 'fixed') {\n return true;\n }\n const parentNode = getParentNode(element);\n if (!parentNode) {\n return false;\n }\n return isFixed(parentNode);\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport isIE from './isIE';\n/**\n * Finds the first parent of an element that has a transformed property defined\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} first transformed parent or documentElement\n */\n\nexport default function getFixedPositionOffsetParent(element) {\n // This check is needed to avoid errors in case one of the elements isn't defined for any reason\n if (!element || !element.parentElement || isIE()) {\n return document.documentElement;\n }\n let el = element.parentElement;\n while (el && getStyleComputedProperty(el, 'transform') === 'none') {\n el = el.parentElement;\n }\n return el || document.documentElement;\n\n}\n","import getScrollParent from './getScrollParent';\nimport getParentNode from './getParentNode';\nimport getReferenceNode from './getReferenceNode';\nimport findCommonOffsetParent from './findCommonOffsetParent';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getViewportOffsetRectRelativeToArtbitraryNode from './getViewportOffsetRectRelativeToArtbitraryNode';\nimport getWindowSizes from './getWindowSizes';\nimport isFixed from './isFixed';\nimport getFixedPositionOffsetParent from './getFixedPositionOffsetParent';\n\n/**\n * Computed the boundaries limits and return them\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} popper\n * @param {HTMLElement} reference\n * @param {number} padding\n * @param {HTMLElement} boundariesElement - Element used to define the boundaries\n * @param {Boolean} fixedPosition - Is in fixed position mode\n * @returns {Object} Coordinates of the boundaries\n */\nexport default function getBoundaries(\n popper,\n reference,\n padding,\n boundariesElement,\n fixedPosition = false\n) {\n // NOTE: 1 DOM access here\n\n let boundaries = { top: 0, left: 0 };\n const offsetParent = fixedPosition ? getFixedPositionOffsetParent(popper) : findCommonOffsetParent(popper, getReferenceNode(reference));\n\n // Handle viewport case\n if (boundariesElement === 'viewport' ) {\n boundaries = getViewportOffsetRectRelativeToArtbitraryNode(offsetParent, fixedPosition);\n }\n\n else {\n // Handle other cases based on DOM element used as boundaries\n let boundariesNode;\n if (boundariesElement === 'scrollParent') {\n boundariesNode = getScrollParent(getParentNode(reference));\n if (boundariesNode.nodeName === 'BODY') {\n boundariesNode = popper.ownerDocument.documentElement;\n }\n } else if (boundariesElement === 'window') {\n boundariesNode = popper.ownerDocument.documentElement;\n } else {\n boundariesNode = boundariesElement;\n }\n\n const offsets = getOffsetRectRelativeToArbitraryNode(\n boundariesNode,\n offsetParent,\n fixedPosition\n );\n\n // In case of HTML, we need a different computation\n if (boundariesNode.nodeName === 'HTML' && !isFixed(offsetParent)) {\n const { height, width } = getWindowSizes(popper.ownerDocument);\n boundaries.top += offsets.top - offsets.marginTop;\n boundaries.bottom = height + offsets.top;\n boundaries.left += offsets.left - offsets.marginLeft;\n boundaries.right = width + offsets.left;\n } else {\n // for all the other DOM elements, this one is good\n boundaries = offsets;\n }\n }\n\n // Add paddings\n padding = padding || 0;\n const isPaddingNumber = typeof padding === 'number';\n boundaries.left += isPaddingNumber ? padding : padding.left || 0; \n boundaries.top += isPaddingNumber ? padding : padding.top || 0; \n boundaries.right -= isPaddingNumber ? padding : padding.right || 0; \n boundaries.bottom -= isPaddingNumber ? padding : padding.bottom || 0; \n\n return boundaries;\n}\n","import getBoundaries from '../utils/getBoundaries';\n\nfunction getArea({ width, height }) {\n return width * height;\n}\n\n/**\n * Utility used to transform the `auto` placement to the placement with more\n * available space.\n * @method\n * @memberof Popper.Utils\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function computeAutoPlacement(\n placement,\n refRect,\n popper,\n reference,\n boundariesElement,\n padding = 0\n) {\n if (placement.indexOf('auto') === -1) {\n return placement;\n }\n\n const boundaries = getBoundaries(\n popper,\n reference,\n padding,\n boundariesElement\n );\n\n const rects = {\n top: {\n width: boundaries.width,\n height: refRect.top - boundaries.top,\n },\n right: {\n width: boundaries.right - refRect.right,\n height: boundaries.height,\n },\n bottom: {\n width: boundaries.width,\n height: boundaries.bottom - refRect.bottom,\n },\n left: {\n width: refRect.left - boundaries.left,\n height: boundaries.height,\n },\n };\n\n const sortedAreas = Object.keys(rects)\n .map(key => ({\n key,\n ...rects[key],\n area: getArea(rects[key]),\n }))\n .sort((a, b) => b.area - a.area);\n\n const filteredAreas = sortedAreas.filter(\n ({ width, height }) =>\n width >= popper.clientWidth && height >= popper.clientHeight\n );\n\n const computedPlacement = filteredAreas.length > 0\n ? filteredAreas[0].key\n : sortedAreas[0].key;\n\n const variation = placement.split('-')[1];\n\n return computedPlacement + (variation ? `-${variation}` : '');\n}\n","import findCommonOffsetParent from './findCommonOffsetParent';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getFixedPositionOffsetParent from './getFixedPositionOffsetParent';\nimport getReferenceNode from './getReferenceNode';\n\n/**\n * Get offsets to the reference element\n * @method\n * @memberof Popper.Utils\n * @param {Object} state\n * @param {Element} popper - the popper element\n * @param {Element} reference - the reference element (the popper will be relative to this)\n * @param {Element} fixedPosition - is in fixed position mode\n * @returns {Object} An object containing the offsets which will be applied to the popper\n */\nexport default function getReferenceOffsets(state, popper, reference, fixedPosition = null) {\n const commonOffsetParent = fixedPosition ? getFixedPositionOffsetParent(popper) : findCommonOffsetParent(popper, getReferenceNode(reference));\n return getOffsetRectRelativeToArbitraryNode(reference, commonOffsetParent, fixedPosition);\n}\n","/**\n * Get the outer sizes of the given element (offset size + margins)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Object} object containing width and height properties\n */\nexport default function getOuterSizes(element) {\n const window = element.ownerDocument.defaultView;\n const styles = window.getComputedStyle(element);\n const x = parseFloat(styles.marginTop || 0) + parseFloat(styles.marginBottom || 0);\n const y = parseFloat(styles.marginLeft || 0) + parseFloat(styles.marginRight || 0);\n const result = {\n width: element.offsetWidth + y,\n height: element.offsetHeight + x,\n };\n return result;\n}\n","/**\n * Get the opposite placement of the given one\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement\n * @returns {String} flipped placement\n */\nexport default function getOppositePlacement(placement) {\n const hash = { left: 'right', right: 'left', bottom: 'top', top: 'bottom' };\n return placement.replace(/left|right|bottom|top/g, matched => hash[matched]);\n}\n","import getOuterSizes from './getOuterSizes';\nimport getOppositePlacement from './getOppositePlacement';\n\n/**\n * Get offsets to the popper\n * @method\n * @memberof Popper.Utils\n * @param {Object} position - CSS position the Popper will get applied\n * @param {HTMLElement} popper - the popper element\n * @param {Object} referenceOffsets - the reference offsets (the popper will be relative to this)\n * @param {String} placement - one of the valid placement options\n * @returns {Object} popperOffsets - An object containing the offsets which will be applied to the popper\n */\nexport default function getPopperOffsets(popper, referenceOffsets, placement) {\n placement = placement.split('-')[0];\n\n // Get popper node sizes\n const popperRect = getOuterSizes(popper);\n\n // Add position, width and height to our offsets object\n const popperOffsets = {\n width: popperRect.width,\n height: popperRect.height,\n };\n\n // depending by the popper placement we have to compute its offsets slightly differently\n const isHoriz = ['right', 'left'].indexOf(placement) !== -1;\n const mainSide = isHoriz ? 'top' : 'left';\n const secondarySide = isHoriz ? 'left' : 'top';\n const measurement = isHoriz ? 'height' : 'width';\n const secondaryMeasurement = !isHoriz ? 'height' : 'width';\n\n popperOffsets[mainSide] =\n referenceOffsets[mainSide] +\n referenceOffsets[measurement] / 2 -\n popperRect[measurement] / 2;\n if (placement === secondarySide) {\n popperOffsets[secondarySide] =\n referenceOffsets[secondarySide] - popperRect[secondaryMeasurement];\n } else {\n popperOffsets[secondarySide] =\n referenceOffsets[getOppositePlacement(secondarySide)];\n }\n\n return popperOffsets;\n}\n","/**\n * Mimics the `find` method of Array\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n */\nexport default function find(arr, check) {\n // use native find if supported\n if (Array.prototype.find) {\n return arr.find(check);\n }\n\n // use `filter` to obtain the same behavior of `find`\n return arr.filter(check)[0];\n}\n","import find from './find';\n\n/**\n * Return the index of the matching object\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n */\nexport default function findIndex(arr, prop, value) {\n // use native findIndex if supported\n if (Array.prototype.findIndex) {\n return arr.findIndex(cur => cur[prop] === value);\n }\n\n // use `find` + `indexOf` if `findIndex` isn't supported\n const match = find(arr, obj => obj[prop] === value);\n return arr.indexOf(match);\n}\n","import isFunction from './isFunction';\nimport findIndex from './findIndex';\nimport getClientRect from '../utils/getClientRect';\n\n/**\n * Loop trough the list of modifiers and run them in order,\n * each of them will then edit the data object.\n * @method\n * @memberof Popper.Utils\n * @param {dataObject} data\n * @param {Array} modifiers\n * @param {String} ends - Optional modifier name used as stopper\n * @returns {dataObject}\n */\nexport default function runModifiers(modifiers, data, ends) {\n const modifiersToRun = ends === undefined\n ? modifiers\n : modifiers.slice(0, findIndex(modifiers, 'name', ends));\n\n modifiersToRun.forEach(modifier => {\n if (modifier['function']) { // eslint-disable-line dot-notation\n console.warn('`modifier.function` is deprecated, use `modifier.fn`!');\n }\n const fn = modifier['function'] || modifier.fn; // eslint-disable-line dot-notation\n if (modifier.enabled && isFunction(fn)) {\n // Add properties to offsets to make them a complete clientRect object\n // we do this before each modifier to make sure the previous one doesn't\n // mess with these values\n data.offsets.popper = getClientRect(data.offsets.popper);\n data.offsets.reference = getClientRect(data.offsets.reference);\n\n data = fn(data, modifier);\n }\n });\n\n return data;\n}\n","import computeAutoPlacement from '../utils/computeAutoPlacement';\nimport getReferenceOffsets from '../utils/getReferenceOffsets';\nimport getPopperOffsets from '../utils/getPopperOffsets';\nimport runModifiers from '../utils/runModifiers';\n\n/**\n * Updates the position of the popper, computing the new offsets and applying\n * the new style.
\n * Prefer `scheduleUpdate` over `update` because of performance reasons.\n * @method\n * @memberof Popper\n */\nexport default function update() {\n // if popper is destroyed, don't perform any further update\n if (this.state.isDestroyed) {\n return;\n }\n\n let data = {\n instance: this,\n styles: {},\n arrowStyles: {},\n attributes: {},\n flipped: false,\n offsets: {},\n };\n\n // compute reference element offsets\n data.offsets.reference = getReferenceOffsets(\n this.state,\n this.popper,\n this.reference,\n this.options.positionFixed\n );\n\n // compute auto placement, store placement inside the data object,\n // modifiers will be able to edit `placement` if needed\n // and refer to originalPlacement to know the original value\n data.placement = computeAutoPlacement(\n this.options.placement,\n data.offsets.reference,\n this.popper,\n this.reference,\n this.options.modifiers.flip.boundariesElement,\n this.options.modifiers.flip.padding\n );\n\n // store the computed placement inside `originalPlacement`\n data.originalPlacement = data.placement;\n\n data.positionFixed = this.options.positionFixed;\n\n // compute the popper offsets\n data.offsets.popper = getPopperOffsets(\n this.popper,\n data.offsets.reference,\n data.placement\n );\n\n data.offsets.popper.position = this.options.positionFixed\n ? 'fixed'\n : 'absolute';\n\n // run the modifiers\n data = runModifiers(this.modifiers, data);\n\n // the first `update` will call `onCreate` callback\n // the other ones will call `onUpdate` callback\n if (!this.state.isCreated) {\n this.state.isCreated = true;\n this.options.onCreate(data);\n } else {\n this.options.onUpdate(data);\n }\n}\n","/**\n * Helper used to know if the given modifier is enabled.\n * @method\n * @memberof Popper.Utils\n * @returns {Boolean}\n */\nexport default function isModifierEnabled(modifiers, modifierName) {\n return modifiers.some(\n ({ name, enabled }) => enabled && name === modifierName\n );\n}\n","/**\n * Get the prefixed supported property name\n * @method\n * @memberof Popper.Utils\n * @argument {String} property (camelCase)\n * @returns {String} prefixed property (camelCase or PascalCase, depending on the vendor prefix)\n */\nexport default function getSupportedPropertyName(property) {\n const prefixes = [false, 'ms', 'Webkit', 'Moz', 'O'];\n const upperProp = property.charAt(0).toUpperCase() + property.slice(1);\n\n for (let i = 0; i < prefixes.length; i++) {\n const prefix = prefixes[i];\n const toCheck = prefix ? `${prefix}${upperProp}` : property;\n if (typeof document.body.style[toCheck] !== 'undefined') {\n return toCheck;\n }\n }\n return null;\n}\n","import isModifierEnabled from '../utils/isModifierEnabled';\nimport getSupportedPropertyName from '../utils/getSupportedPropertyName';\n\n/**\n * Destroys the popper.\n * @method\n * @memberof Popper\n */\nexport default function destroy() {\n this.state.isDestroyed = true;\n\n // touch DOM only if `applyStyle` modifier is enabled\n if (isModifierEnabled(this.modifiers, 'applyStyle')) {\n this.popper.removeAttribute('x-placement');\n this.popper.style.position = '';\n this.popper.style.top = '';\n this.popper.style.left = '';\n this.popper.style.right = '';\n this.popper.style.bottom = '';\n this.popper.style.willChange = '';\n this.popper.style[getSupportedPropertyName('transform')] = '';\n }\n\n this.disableEventListeners();\n\n // remove the popper if user explicitly asked for the deletion on destroy\n // do not use `remove` because IE11 doesn't support it\n if (this.options.removeOnDestroy) {\n this.popper.parentNode.removeChild(this.popper);\n }\n return this;\n}\n","/**\n * Get the window associated with the element\n * @argument {Element} element\n * @returns {Window}\n */\nexport default function getWindow(element) {\n const ownerDocument = element.ownerDocument;\n return ownerDocument ? ownerDocument.defaultView : window;\n}\n","import getScrollParent from './getScrollParent';\nimport getWindow from './getWindow';\n\nfunction attachToScrollParents(scrollParent, event, callback, scrollParents) {\n const isBody = scrollParent.nodeName === 'BODY';\n const target = isBody ? scrollParent.ownerDocument.defaultView : scrollParent;\n target.addEventListener(event, callback, { passive: true });\n\n if (!isBody) {\n attachToScrollParents(\n getScrollParent(target.parentNode),\n event,\n callback,\n scrollParents\n );\n }\n scrollParents.push(target);\n}\n\n/**\n * Setup needed event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n */\nexport default function setupEventListeners(\n reference,\n options,\n state,\n updateBound\n) {\n // Resize event listener on window\n state.updateBound = updateBound;\n getWindow(reference).addEventListener('resize', state.updateBound, { passive: true });\n\n // Scroll event listener on scroll parents\n const scrollElement = getScrollParent(reference);\n attachToScrollParents(\n scrollElement,\n 'scroll',\n state.updateBound,\n state.scrollParents\n );\n state.scrollElement = scrollElement;\n state.eventsEnabled = true;\n\n return state;\n}\n","import setupEventListeners from '../utils/setupEventListeners';\n\n/**\n * It will add resize/scroll events and start recalculating\n * position of the popper element when they are triggered.\n * @method\n * @memberof Popper\n */\nexport default function enableEventListeners() {\n if (!this.state.eventsEnabled) {\n this.state = setupEventListeners(\n this.reference,\n this.options,\n this.state,\n this.scheduleUpdate\n );\n }\n}\n","import getWindow from './getWindow';\n\n/**\n * Remove event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n */\nexport default function removeEventListeners(reference, state) {\n // Remove resize event listener on window\n getWindow(reference).removeEventListener('resize', state.updateBound);\n\n // Remove scroll event listener on scroll parents\n state.scrollParents.forEach(target => {\n target.removeEventListener('scroll', state.updateBound);\n });\n\n // Reset state\n state.updateBound = null;\n state.scrollParents = [];\n state.scrollElement = null;\n state.eventsEnabled = false;\n return state;\n}\n","import removeEventListeners from '../utils/removeEventListeners';\n\n/**\n * It will remove resize/scroll events and won't recalculate popper position\n * when they are triggered. It also won't trigger `onUpdate` callback anymore,\n * unless you call `update` method manually.\n * @method\n * @memberof Popper\n */\nexport default function disableEventListeners() {\n if (this.state.eventsEnabled) {\n cancelAnimationFrame(this.scheduleUpdate);\n this.state = removeEventListeners(this.reference, this.state);\n }\n}\n","/**\n * Tells if a given input is a number\n * @method\n * @memberof Popper.Utils\n * @param {*} input to check\n * @return {Boolean}\n */\nexport default function isNumeric(n) {\n return n !== '' && !isNaN(parseFloat(n)) && isFinite(n);\n}\n","import isNumeric from './isNumeric';\n\n/**\n * Set the style to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the style to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n */\nexport default function setStyles(element, styles) {\n Object.keys(styles).forEach(prop => {\n let unit = '';\n // add unit if the value is numeric and is one of the following\n if (\n ['width', 'height', 'top', 'right', 'bottom', 'left'].indexOf(prop) !==\n -1 &&\n isNumeric(styles[prop])\n ) {\n unit = 'px';\n }\n element.style[prop] = styles[prop] + unit;\n });\n}\n","/**\n * Set the attributes to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the attributes to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n */\nexport default function setAttributes(element, attributes) {\n Object.keys(attributes).forEach(function(prop) {\n const value = attributes[prop];\n if (value !== false) {\n element.setAttribute(prop, attributes[prop]);\n } else {\n element.removeAttribute(prop);\n }\n });\n}\n","import setStyles from '../utils/setStyles';\nimport setAttributes from '../utils/setAttributes';\nimport getReferenceOffsets from '../utils/getReferenceOffsets';\nimport computeAutoPlacement from '../utils/computeAutoPlacement';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} data.styles - List of style properties - values to apply to popper element\n * @argument {Object} data.attributes - List of attribute properties - values to apply to popper element\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The same data object\n */\nexport default function applyStyle(data) {\n // any property present in `data.styles` will be applied to the popper,\n // in this way we can make the 3rd party modifiers add custom styles to it\n // Be aware, modifiers could override the properties defined in the previous\n // lines of this modifier!\n setStyles(data.instance.popper, data.styles);\n\n // any property present in `data.attributes` will be applied to the popper,\n // they will be set as HTML attributes of the element\n setAttributes(data.instance.popper, data.attributes);\n\n // if arrowElement is defined and arrowStyles has some properties\n if (data.arrowElement && Object.keys(data.arrowStyles).length) {\n setStyles(data.arrowElement, data.arrowStyles);\n }\n\n return data;\n}\n\n/**\n * Set the x-placement attribute before everything else because it could be used\n * to add margins to the popper margins needs to be calculated to get the\n * correct popper offsets.\n * @method\n * @memberof Popper.modifiers\n * @param {HTMLElement} reference - The reference element used to position the popper\n * @param {HTMLElement} popper - The HTML element used as popper\n * @param {Object} options - Popper.js options\n */\nexport function applyStyleOnLoad(\n reference,\n popper,\n options,\n modifierOptions,\n state\n) {\n // compute reference element offsets\n const referenceOffsets = getReferenceOffsets(state, popper, reference, options.positionFixed);\n\n // compute auto placement, store placement inside the data object,\n // modifiers will be able to edit `placement` if needed\n // and refer to originalPlacement to know the original value\n const placement = computeAutoPlacement(\n options.placement,\n referenceOffsets,\n popper,\n reference,\n options.modifiers.flip.boundariesElement,\n options.modifiers.flip.padding\n );\n\n popper.setAttribute('x-placement', placement);\n\n // Apply `position` to popper before anything else because\n // without the position applied we can't guarantee correct computations\n setStyles(popper, { position: options.positionFixed ? 'fixed' : 'absolute' });\n\n return options;\n}\n","/**\n * @function\n * @memberof Popper.Utils\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Boolean} shouldRound - If the offsets should be rounded at all\n * @returns {Object} The popper's position offsets rounded\n *\n * The tale of pixel-perfect positioning. It's still not 100% perfect, but as\n * good as it can be within reason.\n * Discussion here: https://github.com/FezVrasta/popper.js/pull/715\n *\n * Low DPI screens cause a popper to be blurry if not using full pixels (Safari\n * as well on High DPI screens).\n *\n * Firefox prefers no rounding for positioning and does not have blurriness on\n * high DPI screens.\n *\n * Only horizontal placement and left/right values need to be considered.\n */\nexport default function getRoundedOffsets(data, shouldRound) {\n const { popper, reference } = data.offsets;\n const { round, floor } = Math;\n const noRound = v => v;\n \n const referenceWidth = round(reference.width);\n const popperWidth = round(popper.width);\n \n const isVertical = ['left', 'right'].indexOf(data.placement) !== -1;\n const isVariation = data.placement.indexOf('-') !== -1;\n const sameWidthParity = referenceWidth % 2 === popperWidth % 2;\n const bothOddWidth = referenceWidth % 2 === 1 && popperWidth % 2 === 1;\n\n const horizontalToInteger = !shouldRound\n ? noRound\n : isVertical || isVariation || sameWidthParity\n ? round\n : floor;\n const verticalToInteger = !shouldRound ? noRound : round;\n\n return {\n left: horizontalToInteger(\n bothOddWidth && !isVariation && shouldRound\n ? popper.left - 1\n : popper.left\n ),\n top: verticalToInteger(popper.top),\n bottom: verticalToInteger(popper.bottom),\n right: horizontalToInteger(popper.right),\n };\n}\n","import getSupportedPropertyName from '../utils/getSupportedPropertyName';\nimport find from '../utils/find';\nimport getOffsetParent from '../utils/getOffsetParent';\nimport getBoundingClientRect from '../utils/getBoundingClientRect';\nimport getRoundedOffsets from '../utils/getRoundedOffsets';\nimport isBrowser from '../utils/isBrowser';\n\nconst isFirefox = isBrowser && /Firefox/i.test(navigator.userAgent);\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function computeStyle(data, options) {\n const { x, y } = options;\n const { popper } = data.offsets;\n\n // Remove this legacy support in Popper.js v2\n const legacyGpuAccelerationOption = find(\n data.instance.modifiers,\n modifier => modifier.name === 'applyStyle'\n ).gpuAcceleration;\n if (legacyGpuAccelerationOption !== undefined) {\n console.warn(\n 'WARNING: `gpuAcceleration` option moved to `computeStyle` modifier and will not be supported in future versions of Popper.js!'\n );\n }\n const gpuAcceleration =\n legacyGpuAccelerationOption !== undefined\n ? legacyGpuAccelerationOption\n : options.gpuAcceleration;\n\n const offsetParent = getOffsetParent(data.instance.popper);\n const offsetParentRect = getBoundingClientRect(offsetParent);\n\n // Styles\n const styles = {\n position: popper.position,\n };\n\n const offsets = getRoundedOffsets(\n data,\n window.devicePixelRatio < 2 || !isFirefox\n );\n\n const sideA = x === 'bottom' ? 'top' : 'bottom';\n const sideB = y === 'right' ? 'left' : 'right';\n\n // if gpuAcceleration is set to `true` and transform is supported,\n // we use `translate3d` to apply the position to the popper we\n // automatically use the supported prefixed version if needed\n const prefixedProperty = getSupportedPropertyName('transform');\n\n // now, let's make a step back and look at this code closely (wtf?)\n // If the content of the popper grows once it's been positioned, it\n // may happen that the popper gets misplaced because of the new content\n // overflowing its reference element\n // To avoid this problem, we provide two options (x and y), which allow\n // the consumer to define the offset origin.\n // If we position a popper on top of a reference element, we can set\n // `x` to `top` to make the popper grow towards its top instead of\n // its bottom.\n let left, top;\n if (sideA === 'bottom') {\n // when offsetParent is the positioning is relative to the bottom of the screen (excluding the scrollbar)\n // and not the bottom of the html element\n if (offsetParent.nodeName === 'HTML') {\n top = -offsetParent.clientHeight + offsets.bottom;\n } else {\n top = -offsetParentRect.height + offsets.bottom;\n }\n } else {\n top = offsets.top;\n }\n if (sideB === 'right') {\n if (offsetParent.nodeName === 'HTML') {\n left = -offsetParent.clientWidth + offsets.right;\n } else {\n left = -offsetParentRect.width + offsets.right;\n }\n } else {\n left = offsets.left;\n }\n if (gpuAcceleration && prefixedProperty) {\n styles[prefixedProperty] = `translate3d(${left}px, ${top}px, 0)`;\n styles[sideA] = 0;\n styles[sideB] = 0;\n styles.willChange = 'transform';\n } else {\n // othwerise, we use the standard `top`, `left`, `bottom` and `right` properties\n const invertTop = sideA === 'bottom' ? -1 : 1;\n const invertLeft = sideB === 'right' ? -1 : 1;\n styles[sideA] = top * invertTop;\n styles[sideB] = left * invertLeft;\n styles.willChange = `${sideA}, ${sideB}`;\n }\n\n // Attributes\n const attributes = {\n 'x-placement': data.placement,\n };\n\n // Update `data` attributes, styles and arrowStyles\n data.attributes = { ...attributes, ...data.attributes };\n data.styles = { ...styles, ...data.styles };\n data.arrowStyles = { ...data.offsets.arrow, ...data.arrowStyles };\n\n return data;\n}\n","import find from './find';\n\n/**\n * Helper used to know if the given modifier depends from another one.
\n * It checks if the needed modifier is listed and enabled.\n * @method\n * @memberof Popper.Utils\n * @param {Array} modifiers - list of modifiers\n * @param {String} requestingName - name of requesting modifier\n * @param {String} requestedName - name of requested modifier\n * @returns {Boolean}\n */\nexport default function isModifierRequired(\n modifiers,\n requestingName,\n requestedName\n) {\n const requesting = find(modifiers, ({ name }) => name === requestingName);\n\n const isRequired =\n !!requesting &&\n modifiers.some(modifier => {\n return (\n modifier.name === requestedName &&\n modifier.enabled &&\n modifier.order < requesting.order\n );\n });\n\n if (!isRequired) {\n const requesting = `\\`${requestingName}\\``;\n const requested = `\\`${requestedName}\\``;\n console.warn(\n `${requested} modifier is required by ${requesting} modifier in order to work, be sure to include it before ${requesting}!`\n );\n }\n return isRequired;\n}\n","import getClientRect from '../utils/getClientRect';\nimport getOuterSizes from '../utils/getOuterSizes';\nimport isModifierRequired from '../utils/isModifierRequired';\nimport getStyleComputedProperty from '../utils/getStyleComputedProperty';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function arrow(data, options) {\n // arrow depends on keepTogether in order to work\n if (!isModifierRequired(data.instance.modifiers, 'arrow', 'keepTogether')) {\n return data;\n }\n\n let arrowElement = options.element;\n\n // if arrowElement is a string, suppose it's a CSS selector\n if (typeof arrowElement === 'string') {\n arrowElement = data.instance.popper.querySelector(arrowElement);\n\n // if arrowElement is not found, don't run the modifier\n if (!arrowElement) {\n return data;\n }\n } else {\n // if the arrowElement isn't a query selector we must check that the\n // provided DOM node is child of its popper node\n if (!data.instance.popper.contains(arrowElement)) {\n console.warn(\n 'WARNING: `arrow.element` must be child of its popper element!'\n );\n return data;\n }\n }\n\n const placement = data.placement.split('-')[0];\n const { popper, reference } = data.offsets;\n const isVertical = ['left', 'right'].indexOf(placement) !== -1;\n\n const len = isVertical ? 'height' : 'width';\n const sideCapitalized = isVertical ? 'Top' : 'Left';\n const side = sideCapitalized.toLowerCase();\n const altSide = isVertical ? 'left' : 'top';\n const opSide = isVertical ? 'bottom' : 'right';\n const arrowElementSize = getOuterSizes(arrowElement)[len];\n\n //\n // extends keepTogether behavior making sure the popper and its\n // reference have enough pixels in conjunction\n //\n\n // top/left side\n if (reference[opSide] - arrowElementSize < popper[side]) {\n data.offsets.popper[side] -=\n popper[side] - (reference[opSide] - arrowElementSize);\n }\n // bottom/right side\n if (reference[side] + arrowElementSize > popper[opSide]) {\n data.offsets.popper[side] +=\n reference[side] + arrowElementSize - popper[opSide];\n }\n data.offsets.popper = getClientRect(data.offsets.popper);\n\n // compute center of the popper\n const center = reference[side] + reference[len] / 2 - arrowElementSize / 2;\n\n // Compute the sideValue using the updated popper offsets\n // take popper margin in account because we don't have this info available\n const css = getStyleComputedProperty(data.instance.popper);\n const popperMarginSide = parseFloat(css[`margin${sideCapitalized}`]);\n const popperBorderSide = parseFloat(css[`border${sideCapitalized}Width`]);\n let sideValue =\n center - data.offsets.popper[side] - popperMarginSide - popperBorderSide;\n\n // prevent arrowElement from being placed not contiguously to its popper\n sideValue = Math.max(Math.min(popper[len] - arrowElementSize, sideValue), 0);\n\n data.arrowElement = arrowElement;\n data.offsets.arrow = {\n [side]: Math.round(sideValue),\n [altSide]: '', // make sure to unset any eventual altSide value from the DOM node\n };\n\n return data;\n}\n","/**\n * Get the opposite placement variation of the given one\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement variation\n * @returns {String} flipped placement variation\n */\nexport default function getOppositeVariation(variation) {\n if (variation === 'end') {\n return 'start';\n } else if (variation === 'start') {\n return 'end';\n }\n return variation;\n}\n","/**\n * List of accepted placements to use as values of the `placement` option.
\n * Valid placements are:\n * - `auto`\n * - `top`\n * - `right`\n * - `bottom`\n * - `left`\n *\n * Each placement can have a variation from this list:\n * - `-start`\n * - `-end`\n *\n * Variations are interpreted easily if you think of them as the left to right\n * written languages. Horizontally (`top` and `bottom`), `start` is left and `end`\n * is right.
\n * Vertically (`left` and `right`), `start` is top and `end` is bottom.\n *\n * Some valid examples are:\n * - `top-end` (on top of reference, right aligned)\n * - `right-start` (on right of reference, top aligned)\n * - `bottom` (on bottom, centered)\n * - `auto-end` (on the side with more space available, alignment depends by placement)\n *\n * @static\n * @type {Array}\n * @enum {String}\n * @readonly\n * @method placements\n * @memberof Popper\n */\nexport default [\n 'auto-start',\n 'auto',\n 'auto-end',\n 'top-start',\n 'top',\n 'top-end',\n 'right-start',\n 'right',\n 'right-end',\n 'bottom-end',\n 'bottom',\n 'bottom-start',\n 'left-end',\n 'left',\n 'left-start',\n];\n","import placements from '../methods/placements';\n\n// Get rid of `auto` `auto-start` and `auto-end`\nconst validPlacements = placements.slice(3);\n\n/**\n * Given an initial placement, returns all the subsequent placements\n * clockwise (or counter-clockwise).\n *\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement - A valid placement (it accepts variations)\n * @argument {Boolean} counter - Set to true to walk the placements counterclockwise\n * @returns {Array} placements including their variations\n */\nexport default function clockwise(placement, counter = false) {\n const index = validPlacements.indexOf(placement);\n const arr = validPlacements\n .slice(index + 1)\n .concat(validPlacements.slice(0, index));\n return counter ? arr.reverse() : arr;\n}\n","import getOppositePlacement from '../utils/getOppositePlacement';\nimport getOppositeVariation from '../utils/getOppositeVariation';\nimport getPopperOffsets from '../utils/getPopperOffsets';\nimport runModifiers from '../utils/runModifiers';\nimport getBoundaries from '../utils/getBoundaries';\nimport isModifierEnabled from '../utils/isModifierEnabled';\nimport clockwise from '../utils/clockwise';\n\nconst BEHAVIORS = {\n FLIP: 'flip',\n CLOCKWISE: 'clockwise',\n COUNTERCLOCKWISE: 'counterclockwise',\n};\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function flip(data, options) {\n // if `inner` modifier is enabled, we can't use the `flip` modifier\n if (isModifierEnabled(data.instance.modifiers, 'inner')) {\n return data;\n }\n\n if (data.flipped && data.placement === data.originalPlacement) {\n // seems like flip is trying to loop, probably there's not enough space on any of the flippable sides\n return data;\n }\n\n const boundaries = getBoundaries(\n data.instance.popper,\n data.instance.reference,\n options.padding,\n options.boundariesElement,\n data.positionFixed\n );\n\n let placement = data.placement.split('-')[0];\n let placementOpposite = getOppositePlacement(placement);\n let variation = data.placement.split('-')[1] || '';\n\n let flipOrder = [];\n\n switch (options.behavior) {\n case BEHAVIORS.FLIP:\n flipOrder = [placement, placementOpposite];\n break;\n case BEHAVIORS.CLOCKWISE:\n flipOrder = clockwise(placement);\n break;\n case BEHAVIORS.COUNTERCLOCKWISE:\n flipOrder = clockwise(placement, true);\n break;\n default:\n flipOrder = options.behavior;\n }\n\n flipOrder.forEach((step, index) => {\n if (placement !== step || flipOrder.length === index + 1) {\n return data;\n }\n\n placement = data.placement.split('-')[0];\n placementOpposite = getOppositePlacement(placement);\n\n const popperOffsets = data.offsets.popper;\n const refOffsets = data.offsets.reference;\n\n // using floor because the reference offsets may contain decimals we are not going to consider here\n const floor = Math.floor;\n const overlapsRef =\n (placement === 'left' &&\n floor(popperOffsets.right) > floor(refOffsets.left)) ||\n (placement === 'right' &&\n floor(popperOffsets.left) < floor(refOffsets.right)) ||\n (placement === 'top' &&\n floor(popperOffsets.bottom) > floor(refOffsets.top)) ||\n (placement === 'bottom' &&\n floor(popperOffsets.top) < floor(refOffsets.bottom));\n\n const overflowsLeft = floor(popperOffsets.left) < floor(boundaries.left);\n const overflowsRight = floor(popperOffsets.right) > floor(boundaries.right);\n const overflowsTop = floor(popperOffsets.top) < floor(boundaries.top);\n const overflowsBottom =\n floor(popperOffsets.bottom) > floor(boundaries.bottom);\n\n const overflowsBoundaries =\n (placement === 'left' && overflowsLeft) ||\n (placement === 'right' && overflowsRight) ||\n (placement === 'top' && overflowsTop) ||\n (placement === 'bottom' && overflowsBottom);\n\n // flip the variation if required\n const isVertical = ['top', 'bottom'].indexOf(placement) !== -1;\n\n // flips variation if reference element overflows boundaries\n const flippedVariationByRef =\n !!options.flipVariations &&\n ((isVertical && variation === 'start' && overflowsLeft) ||\n (isVertical && variation === 'end' && overflowsRight) ||\n (!isVertical && variation === 'start' && overflowsTop) ||\n (!isVertical && variation === 'end' && overflowsBottom));\n\n // flips variation if popper content overflows boundaries\n const flippedVariationByContent =\n !!options.flipVariationsByContent &&\n ((isVertical && variation === 'start' && overflowsRight) ||\n (isVertical && variation === 'end' && overflowsLeft) ||\n (!isVertical && variation === 'start' && overflowsBottom) ||\n (!isVertical && variation === 'end' && overflowsTop));\n\n const flippedVariation = flippedVariationByRef || flippedVariationByContent;\n\n if (overlapsRef || overflowsBoundaries || flippedVariation) {\n // this boolean to detect any flip loop\n data.flipped = true;\n\n if (overlapsRef || overflowsBoundaries) {\n placement = flipOrder[index + 1];\n }\n\n if (flippedVariation) {\n variation = getOppositeVariation(variation);\n }\n\n data.placement = placement + (variation ? '-' + variation : '');\n\n // this object contains `position`, we want to preserve it along with\n // any additional property we may add in the future\n data.offsets.popper = {\n ...data.offsets.popper,\n ...getPopperOffsets(\n data.instance.popper,\n data.offsets.reference,\n data.placement\n ),\n };\n\n data = runModifiers(data.instance.modifiers, data, 'flip');\n }\n });\n return data;\n}\n","/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function keepTogether(data) {\n const { popper, reference } = data.offsets;\n const placement = data.placement.split('-')[0];\n const floor = Math.floor;\n const isVertical = ['top', 'bottom'].indexOf(placement) !== -1;\n const side = isVertical ? 'right' : 'bottom';\n const opSide = isVertical ? 'left' : 'top';\n const measurement = isVertical ? 'width' : 'height';\n\n if (popper[side] < floor(reference[opSide])) {\n data.offsets.popper[opSide] =\n floor(reference[opSide]) - popper[measurement];\n }\n if (popper[opSide] > floor(reference[side])) {\n data.offsets.popper[opSide] = floor(reference[side]);\n }\n\n return data;\n}\n","import isNumeric from '../utils/isNumeric';\nimport getClientRect from '../utils/getClientRect';\nimport find from '../utils/find';\n\n/**\n * Converts a string containing value + unit into a px value number\n * @function\n * @memberof {modifiers~offset}\n * @private\n * @argument {String} str - Value + unit string\n * @argument {String} measurement - `height` or `width`\n * @argument {Object} popperOffsets\n * @argument {Object} referenceOffsets\n * @returns {Number|String}\n * Value in pixels, or original string if no values were extracted\n */\nexport function toValue(str, measurement, popperOffsets, referenceOffsets) {\n // separate value from unit\n const split = str.match(/((?:\\-|\\+)?\\d*\\.?\\d*)(.*)/);\n const value = +split[1];\n const unit = split[2];\n\n // If it's not a number it's an operator, I guess\n if (!value) {\n return str;\n }\n\n if (unit.indexOf('%') === 0) {\n let element;\n switch (unit) {\n case '%p':\n element = popperOffsets;\n break;\n case '%':\n case '%r':\n default:\n element = referenceOffsets;\n }\n\n const rect = getClientRect(element);\n return rect[measurement] / 100 * value;\n } else if (unit === 'vh' || unit === 'vw') {\n // if is a vh or vw, we calculate the size based on the viewport\n let size;\n if (unit === 'vh') {\n size = Math.max(\n document.documentElement.clientHeight,\n window.innerHeight || 0\n );\n } else {\n size = Math.max(\n document.documentElement.clientWidth,\n window.innerWidth || 0\n );\n }\n return size / 100 * value;\n } else {\n // if is an explicit pixel unit, we get rid of the unit and keep the value\n // if is an implicit unit, it's px, and we return just the value\n return value;\n }\n}\n\n/**\n * Parse an `offset` string to extrapolate `x` and `y` numeric offsets.\n * @function\n * @memberof {modifiers~offset}\n * @private\n * @argument {String} offset\n * @argument {Object} popperOffsets\n * @argument {Object} referenceOffsets\n * @argument {String} basePlacement\n * @returns {Array} a two cells array with x and y offsets in numbers\n */\nexport function parseOffset(\n offset,\n popperOffsets,\n referenceOffsets,\n basePlacement\n) {\n const offsets = [0, 0];\n\n // Use height if placement is left or right and index is 0 otherwise use width\n // in this way the first offset will use an axis and the second one\n // will use the other one\n const useHeight = ['right', 'left'].indexOf(basePlacement) !== -1;\n\n // Split the offset string to obtain a list of values and operands\n // The regex addresses values with the plus or minus sign in front (+10, -20, etc)\n const fragments = offset.split(/(\\+|\\-)/).map(frag => frag.trim());\n\n // Detect if the offset string contains a pair of values or a single one\n // they could be separated by comma or space\n const divider = fragments.indexOf(\n find(fragments, frag => frag.search(/,|\\s/) !== -1)\n );\n\n if (fragments[divider] && fragments[divider].indexOf(',') === -1) {\n console.warn(\n 'Offsets separated by white space(s) are deprecated, use a comma (,) instead.'\n );\n }\n\n // If divider is found, we divide the list of values and operands to divide\n // them by ofset X and Y.\n const splitRegex = /\\s*,\\s*|\\s+/;\n let ops = divider !== -1\n ? [\n fragments\n .slice(0, divider)\n .concat([fragments[divider].split(splitRegex)[0]]),\n [fragments[divider].split(splitRegex)[1]].concat(\n fragments.slice(divider + 1)\n ),\n ]\n : [fragments];\n\n // Convert the values with units to absolute pixels to allow our computations\n ops = ops.map((op, index) => {\n // Most of the units rely on the orientation of the popper\n const measurement = (index === 1 ? !useHeight : useHeight)\n ? 'height'\n : 'width';\n let mergeWithPrevious = false;\n return (\n op\n // This aggregates any `+` or `-` sign that aren't considered operators\n // e.g.: 10 + +5 => [10, +, +5]\n .reduce((a, b) => {\n if (a[a.length - 1] === '' && ['+', '-'].indexOf(b) !== -1) {\n a[a.length - 1] = b;\n mergeWithPrevious = true;\n return a;\n } else if (mergeWithPrevious) {\n a[a.length - 1] += b;\n mergeWithPrevious = false;\n return a;\n } else {\n return a.concat(b);\n }\n }, [])\n // Here we convert the string values into number values (in px)\n .map(str => toValue(str, measurement, popperOffsets, referenceOffsets))\n );\n });\n\n // Loop trough the offsets arrays and execute the operations\n ops.forEach((op, index) => {\n op.forEach((frag, index2) => {\n if (isNumeric(frag)) {\n offsets[index] += frag * (op[index2 - 1] === '-' ? -1 : 1);\n }\n });\n });\n return offsets;\n}\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @argument {Number|String} options.offset=0\n * The offset value as described in the modifier description\n * @returns {Object} The data object, properly modified\n */\nexport default function offset(data, { offset }) {\n const { placement, offsets: { popper, reference } } = data;\n const basePlacement = placement.split('-')[0];\n\n let offsets;\n if (isNumeric(+offset)) {\n offsets = [+offset, 0];\n } else {\n offsets = parseOffset(offset, popper, reference, basePlacement);\n }\n\n if (basePlacement === 'left') {\n popper.top += offsets[0];\n popper.left -= offsets[1];\n } else if (basePlacement === 'right') {\n popper.top += offsets[0];\n popper.left += offsets[1];\n } else if (basePlacement === 'top') {\n popper.left += offsets[0];\n popper.top -= offsets[1];\n } else if (basePlacement === 'bottom') {\n popper.left += offsets[0];\n popper.top += offsets[1];\n }\n\n data.popper = popper;\n return data;\n}\n","import getOffsetParent from '../utils/getOffsetParent';\nimport getBoundaries from '../utils/getBoundaries';\nimport getSupportedPropertyName from '../utils/getSupportedPropertyName';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function preventOverflow(data, options) {\n let boundariesElement =\n options.boundariesElement || getOffsetParent(data.instance.popper);\n\n // If offsetParent is the reference element, we really want to\n // go one step up and use the next offsetParent as reference to\n // avoid to make this modifier completely useless and look like broken\n if (data.instance.reference === boundariesElement) {\n boundariesElement = getOffsetParent(boundariesElement);\n }\n\n // NOTE: DOM access here\n // resets the popper's position so that the document size can be calculated excluding\n // the size of the popper element itself\n const transformProp = getSupportedPropertyName('transform');\n const popperStyles = data.instance.popper.style; // assignment to help minification\n const { top, left, [transformProp]: transform } = popperStyles;\n popperStyles.top = '';\n popperStyles.left = '';\n popperStyles[transformProp] = '';\n\n const boundaries = getBoundaries(\n data.instance.popper,\n data.instance.reference,\n options.padding,\n boundariesElement,\n data.positionFixed\n );\n\n // NOTE: DOM access here\n // restores the original style properties after the offsets have been computed\n popperStyles.top = top;\n popperStyles.left = left;\n popperStyles[transformProp] = transform;\n\n options.boundaries = boundaries;\n\n const order = options.priority;\n let popper = data.offsets.popper;\n\n const check = {\n primary(placement) {\n let value = popper[placement];\n if (\n popper[placement] < boundaries[placement] &&\n !options.escapeWithReference\n ) {\n value = Math.max(popper[placement], boundaries[placement]);\n }\n return { [placement]: value };\n },\n secondary(placement) {\n const mainSide = placement === 'right' ? 'left' : 'top';\n let value = popper[mainSide];\n if (\n popper[placement] > boundaries[placement] &&\n !options.escapeWithReference\n ) {\n value = Math.min(\n popper[mainSide],\n boundaries[placement] -\n (placement === 'right' ? popper.width : popper.height)\n );\n }\n return { [mainSide]: value };\n },\n };\n\n order.forEach(placement => {\n const side =\n ['left', 'top'].indexOf(placement) !== -1 ? 'primary' : 'secondary';\n popper = { ...popper, ...check[side](placement) };\n });\n\n data.offsets.popper = popper;\n\n return data;\n}\n","/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function shift(data) {\n const placement = data.placement;\n const basePlacement = placement.split('-')[0];\n const shiftvariation = placement.split('-')[1];\n\n // if shift shiftvariation is specified, run the modifier\n if (shiftvariation) {\n const { reference, popper } = data.offsets;\n const isVertical = ['bottom', 'top'].indexOf(basePlacement) !== -1;\n const side = isVertical ? 'left' : 'top';\n const measurement = isVertical ? 'width' : 'height';\n\n const shiftOffsets = {\n start: { [side]: reference[side] },\n end: {\n [side]: reference[side] + reference[measurement] - popper[measurement],\n },\n };\n\n data.offsets.popper = { ...popper, ...shiftOffsets[shiftvariation] };\n }\n\n return data;\n}\n","import isModifierRequired from '../utils/isModifierRequired';\nimport find from '../utils/find';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function hide(data) {\n if (!isModifierRequired(data.instance.modifiers, 'hide', 'preventOverflow')) {\n return data;\n }\n\n const refRect = data.offsets.reference;\n const bound = find(\n data.instance.modifiers,\n modifier => modifier.name === 'preventOverflow'\n ).boundaries;\n\n if (\n refRect.bottom < bound.top ||\n refRect.left > bound.right ||\n refRect.top > bound.bottom ||\n refRect.right < bound.left\n ) {\n // Avoid unnecessary DOM access if visibility hasn't changed\n if (data.hide === true) {\n return data;\n }\n\n data.hide = true;\n data.attributes['x-out-of-boundaries'] = '';\n } else {\n // Avoid unnecessary DOM access if visibility hasn't changed\n if (data.hide === false) {\n return data;\n }\n\n data.hide = false;\n data.attributes['x-out-of-boundaries'] = false;\n }\n\n return data;\n}\n","import getClientRect from '../utils/getClientRect';\nimport getOppositePlacement from '../utils/getOppositePlacement';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function inner(data) {\n const placement = data.placement;\n const basePlacement = placement.split('-')[0];\n const { popper, reference } = data.offsets;\n const isHoriz = ['left', 'right'].indexOf(basePlacement) !== -1;\n\n const subtractLength = ['top', 'left'].indexOf(basePlacement) === -1;\n\n popper[isHoriz ? 'left' : 'top'] =\n reference[basePlacement] -\n (subtractLength ? popper[isHoriz ? 'width' : 'height'] : 0);\n\n data.placement = getOppositePlacement(placement);\n data.offsets.popper = getClientRect(popper);\n\n return data;\n}\n","import applyStyle, { applyStyleOnLoad } from './applyStyle';\nimport computeStyle from './computeStyle';\nimport arrow from './arrow';\nimport flip from './flip';\nimport keepTogether from './keepTogether';\nimport offset from './offset';\nimport preventOverflow from './preventOverflow';\nimport shift from './shift';\nimport hide from './hide';\nimport inner from './inner';\n\n/**\n * Modifier function, each modifier can have a function of this type assigned\n * to its `fn` property.
\n * These functions will be called on each update, this means that you must\n * make sure they are performant enough to avoid performance bottlenecks.\n *\n * @function ModifierFn\n * @argument {dataObject} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {dataObject} The data object, properly modified\n */\n\n/**\n * Modifiers are plugins used to alter the behavior of your poppers.
\n * Popper.js uses a set of 9 modifiers to provide all the basic functionalities\n * needed by the library.\n *\n * Usually you don't want to override the `order`, `fn` and `onLoad` props.\n * All the other properties are configurations that could be tweaked.\n * @namespace modifiers\n */\nexport default {\n /**\n * Modifier used to shift the popper on the start or end of its reference\n * element.
\n * It will read the variation of the `placement` property.
\n * It can be one either `-end` or `-start`.\n * @memberof modifiers\n * @inner\n */\n shift: {\n /** @prop {number} order=100 - Index used to define the order of execution */\n order: 100,\n /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n enabled: true,\n /** @prop {ModifierFn} */\n fn: shift,\n },\n\n /**\n * The `offset` modifier can shift your popper on both its axis.\n *\n * It accepts the following units:\n * - `px` or unit-less, interpreted as pixels\n * - `%` or `%r`, percentage relative to the length of the reference element\n * - `%p`, percentage relative to the length of the popper element\n * - `vw`, CSS viewport width unit\n * - `vh`, CSS viewport height unit\n *\n * For length is intended the main axis relative to the placement of the popper.
\n * This means that if the placement is `top` or `bottom`, the length will be the\n * `width`. In case of `left` or `right`, it will be the `height`.\n *\n * You can provide a single value (as `Number` or `String`), or a pair of values\n * as `String` divided by a comma or one (or more) white spaces.
\n * The latter is a deprecated method because it leads to confusion and will be\n * removed in v2.
\n * Additionally, it accepts additions and subtractions between different units.\n * Note that multiplications and divisions aren't supported.\n *\n * Valid examples are:\n * ```\n * 10\n * '10%'\n * '10, 10'\n * '10%, 10'\n * '10 + 10%'\n * '10 - 5vh + 3%'\n * '-10px + 5vh, 5px - 6%'\n * ```\n * > **NB**: If you desire to apply offsets to your poppers in a way that may make them overlap\n * > with their reference element, unfortunately, you will have to disable the `flip` modifier.\n * > You can read more on this at this [issue](https://github.com/FezVrasta/popper.js/issues/373).\n *\n * @memberof modifiers\n * @inner\n */\n offset: {\n /** @prop {number} order=200 - Index used to define the order of execution */\n order: 200,\n /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n enabled: true,\n /** @prop {ModifierFn} */\n fn: offset,\n /** @prop {Number|String} offset=0\n * The offset value as described in the modifier description\n */\n offset: 0,\n },\n\n /**\n * Modifier used to prevent the popper from being positioned outside the boundary.\n *\n * A scenario exists where the reference itself is not within the boundaries.
\n * We can say it has \"escaped the boundaries\" — or just \"escaped\".
\n * In this case we need to decide whether the popper should either:\n *\n * - detach from the reference and remain \"trapped\" in the boundaries, or\n * - if it should ignore the boundary and \"escape with its reference\"\n *\n * When `escapeWithReference` is set to`true` and reference is completely\n * outside its boundaries, the popper will overflow (or completely leave)\n * the boundaries in order to remain attached to the edge of the reference.\n *\n * @memberof modifiers\n * @inner\n */\n preventOverflow: {\n /** @prop {number} order=300 - Index used to define the order of execution */\n order: 300,\n /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n enabled: true,\n /** @prop {ModifierFn} */\n fn: preventOverflow,\n /**\n * @prop {Array} [priority=['left','right','top','bottom']]\n * Popper will try to prevent overflow following these priorities by default,\n * then, it could overflow on the left and on top of the `boundariesElement`\n */\n priority: ['left', 'right', 'top', 'bottom'],\n /**\n * @prop {number} padding=5\n * Amount of pixel used to define a minimum distance between the boundaries\n * and the popper. This makes sure the popper always has a little padding\n * between the edges of its container\n */\n padding: 5,\n /**\n * @prop {String|HTMLElement} boundariesElement='scrollParent'\n * Boundaries used by the modifier. Can be `scrollParent`, `window`,\n * `viewport` or any DOM element.\n */\n boundariesElement: 'scrollParent',\n },\n\n /**\n * Modifier used to make sure the reference and its popper stay near each other\n * without leaving any gap between the two. Especially useful when the arrow is\n * enabled and you want to ensure that it points to its reference element.\n * It cares only about the first axis. You can still have poppers with margin\n * between the popper and its reference element.\n * @memberof modifiers\n * @inner\n */\n keepTogether: {\n /** @prop {number} order=400 - Index used to define the order of execution */\n order: 400,\n /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n enabled: true,\n /** @prop {ModifierFn} */\n fn: keepTogether,\n },\n\n /**\n * This modifier is used to move the `arrowElement` of the popper to make\n * sure it is positioned between the reference element and its popper element.\n * It will read the outer size of the `arrowElement` node to detect how many\n * pixels of conjunction are needed.\n *\n * It has no effect if no `arrowElement` is provided.\n * @memberof modifiers\n * @inner\n */\n arrow: {\n /** @prop {number} order=500 - Index used to define the order of execution */\n order: 500,\n /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n enabled: true,\n /** @prop {ModifierFn} */\n fn: arrow,\n /** @prop {String|HTMLElement} element='[x-arrow]' - Selector or node used as arrow */\n element: '[x-arrow]',\n },\n\n /**\n * Modifier used to flip the popper's placement when it starts to overlap its\n * reference element.\n *\n * Requires the `preventOverflow` modifier before it in order to work.\n *\n * **NOTE:** this modifier will interrupt the current update cycle and will\n * restart it if it detects the need to flip the placement.\n * @memberof modifiers\n * @inner\n */\n flip: {\n /** @prop {number} order=600 - Index used to define the order of execution */\n order: 600,\n /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n enabled: true,\n /** @prop {ModifierFn} */\n fn: flip,\n /**\n * @prop {String|Array} behavior='flip'\n * The behavior used to change the popper's placement. It can be one of\n * `flip`, `clockwise`, `counterclockwise` or an array with a list of valid\n * placements (with optional variations)\n */\n behavior: 'flip',\n /**\n * @prop {number} padding=5\n * The popper will flip if it hits the edges of the `boundariesElement`\n */\n padding: 5,\n /**\n * @prop {String|HTMLElement} boundariesElement='viewport'\n * The element which will define the boundaries of the popper position.\n * The popper will never be placed outside of the defined boundaries\n * (except if `keepTogether` is enabled)\n */\n boundariesElement: 'viewport',\n /**\n * @prop {Boolean} flipVariations=false\n * The popper will switch placement variation between `-start` and `-end` when\n * the reference element overlaps its boundaries.\n *\n * The original placement should have a set variation.\n */\n flipVariations: false,\n /**\n * @prop {Boolean} flipVariationsByContent=false\n * The popper will switch placement variation between `-start` and `-end` when\n * the popper element overlaps its reference boundaries.\n *\n * The original placement should have a set variation.\n */\n flipVariationsByContent: false,\n },\n\n /**\n * Modifier used to make the popper flow toward the inner of the reference element.\n * By default, when this modifier is disabled, the popper will be placed outside\n * the reference element.\n * @memberof modifiers\n * @inner\n */\n inner: {\n /** @prop {number} order=700 - Index used to define the order of execution */\n order: 700,\n /** @prop {Boolean} enabled=false - Whether the modifier is enabled or not */\n enabled: false,\n /** @prop {ModifierFn} */\n fn: inner,\n },\n\n /**\n * Modifier used to hide the popper when its reference element is outside of the\n * popper boundaries. It will set a `x-out-of-boundaries` attribute which can\n * be used to hide with a CSS selector the popper when its reference is\n * out of boundaries.\n *\n * Requires the `preventOverflow` modifier before it in order to work.\n * @memberof modifiers\n * @inner\n */\n hide: {\n /** @prop {number} order=800 - Index used to define the order of execution */\n order: 800,\n /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n enabled: true,\n /** @prop {ModifierFn} */\n fn: hide,\n },\n\n /**\n * Computes the style that will be applied to the popper element to gets\n * properly positioned.\n *\n * Note that this modifier will not touch the DOM, it just prepares the styles\n * so that `applyStyle` modifier can apply it. This separation is useful\n * in case you need to replace `applyStyle` with a custom implementation.\n *\n * This modifier has `850` as `order` value to maintain backward compatibility\n * with previous versions of Popper.js. Expect the modifiers ordering method\n * to change in future major versions of the library.\n *\n * @memberof modifiers\n * @inner\n */\n computeStyle: {\n /** @prop {number} order=850 - Index used to define the order of execution */\n order: 850,\n /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n enabled: true,\n /** @prop {ModifierFn} */\n fn: computeStyle,\n /**\n * @prop {Boolean} gpuAcceleration=true\n * If true, it uses the CSS 3D transformation to position the popper.\n * Otherwise, it will use the `top` and `left` properties\n */\n gpuAcceleration: true,\n /**\n * @prop {string} [x='bottom']\n * Where to anchor the X axis (`bottom` or `top`). AKA X offset origin.\n * Change this if your popper should grow in a direction different from `bottom`\n */\n x: 'bottom',\n /**\n * @prop {string} [x='left']\n * Where to anchor the Y axis (`left` or `right`). AKA Y offset origin.\n * Change this if your popper should grow in a direction different from `right`\n */\n y: 'right',\n },\n\n /**\n * Applies the computed styles to the popper element.\n *\n * All the DOM manipulations are limited to this modifier. This is useful in case\n * you want to integrate Popper.js inside a framework or view library and you\n * want to delegate all the DOM manipulations to it.\n *\n * Note that if you disable this modifier, you must make sure the popper element\n * has its position set to `absolute` before Popper.js can do its work!\n *\n * Just disable this modifier and define your own to achieve the desired effect.\n *\n * @memberof modifiers\n * @inner\n */\n applyStyle: {\n /** @prop {number} order=900 - Index used to define the order of execution */\n order: 900,\n /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n enabled: true,\n /** @prop {ModifierFn} */\n fn: applyStyle,\n /** @prop {Function} */\n onLoad: applyStyleOnLoad,\n /**\n * @deprecated since version 1.10.0, the property moved to `computeStyle` modifier\n * @prop {Boolean} gpuAcceleration=true\n * If true, it uses the CSS 3D transformation to position the popper.\n * Otherwise, it will use the `top` and `left` properties\n */\n gpuAcceleration: undefined,\n },\n};\n\n/**\n * The `dataObject` is an object containing all the information used by Popper.js.\n * This object is passed to modifiers and to the `onCreate` and `onUpdate` callbacks.\n * @name dataObject\n * @property {Object} data.instance The Popper.js instance\n * @property {String} data.placement Placement applied to popper\n * @property {String} data.originalPlacement Placement originally defined on init\n * @property {Boolean} data.flipped True if popper has been flipped by flip modifier\n * @property {Boolean} data.hide True if the reference element is out of boundaries, useful to know when to hide the popper\n * @property {HTMLElement} data.arrowElement Node used as arrow by arrow modifier\n * @property {Object} data.styles Any CSS property defined here will be applied to the popper. It expects the JavaScript nomenclature (eg. `marginBottom`)\n * @property {Object} data.arrowStyles Any CSS property defined here will be applied to the popper arrow. It expects the JavaScript nomenclature (eg. `marginBottom`)\n * @property {Object} data.boundaries Offsets of the popper boundaries\n * @property {Object} data.offsets The measurements of popper, reference and arrow elements\n * @property {Object} data.offsets.popper `top`, `left`, `width`, `height` values\n * @property {Object} data.offsets.reference `top`, `left`, `width`, `height` values\n * @property {Object} data.offsets.arrow] `top` and `left` offsets, only one of them will be different from 0\n */\n","import modifiers from '../modifiers/index';\n\n/**\n * Default options provided to Popper.js constructor.
\n * These can be overridden using the `options` argument of Popper.js.
\n * To override an option, simply pass an object with the same\n * structure of the `options` object, as the 3rd argument. For example:\n * ```\n * new Popper(ref, pop, {\n * modifiers: {\n * preventOverflow: { enabled: false }\n * }\n * })\n * ```\n * @type {Object}\n * @static\n * @memberof Popper\n */\nexport default {\n /**\n * Popper's placement.\n * @prop {Popper.placements} placement='bottom'\n */\n placement: 'bottom',\n\n /**\n * Set this to true if you want popper to position it self in 'fixed' mode\n * @prop {Boolean} positionFixed=false\n */\n positionFixed: false,\n\n /**\n * Whether events (resize, scroll) are initially enabled.\n * @prop {Boolean} eventsEnabled=true\n */\n eventsEnabled: true,\n\n /**\n * Set to true if you want to automatically remove the popper when\n * you call the `destroy` method.\n * @prop {Boolean} removeOnDestroy=false\n */\n removeOnDestroy: false,\n\n /**\n * Callback called when the popper is created.
\n * By default, it is set to no-op.
\n * Access Popper.js instance with `data.instance`.\n * @prop {onCreate}\n */\n onCreate: () => {},\n\n /**\n * Callback called when the popper is updated. This callback is not called\n * on the initialization/creation of the popper, but only on subsequent\n * updates.
\n * By default, it is set to no-op.
\n * Access Popper.js instance with `data.instance`.\n * @prop {onUpdate}\n */\n onUpdate: () => {},\n\n /**\n * List of modifiers used to modify the offsets before they are applied to the popper.\n * They provide most of the functionalities of Popper.js.\n * @prop {modifiers}\n */\n modifiers,\n};\n\n/**\n * @callback onCreate\n * @param {dataObject} data\n */\n\n/**\n * @callback onUpdate\n * @param {dataObject} data\n */\n","// Utils\nimport debounce from './utils/debounce';\nimport isFunction from './utils/isFunction';\n\n// Methods\nimport update from './methods/update';\nimport destroy from './methods/destroy';\nimport enableEventListeners from './methods/enableEventListeners';\nimport disableEventListeners from './methods/disableEventListeners';\nimport Defaults from './methods/defaults';\nimport placements from './methods/placements';\n\nexport default class Popper {\n /**\n * Creates a new Popper.js instance.\n * @class Popper\n * @param {Element|referenceObject} reference - The reference element used to position the popper\n * @param {Element} popper - The HTML / XML element used as the popper\n * @param {Object} options - Your custom options to override the ones defined in [Defaults](#defaults)\n * @return {Object} instance - The generated Popper.js instance\n */\n constructor(reference, popper, options = {}) {\n // make update() debounced, so that it only runs at most once-per-tick\n this.update = debounce(this.update.bind(this));\n\n // with {} we create a new object with the options inside it\n this.options = { ...Popper.Defaults, ...options };\n\n // init state\n this.state = {\n isDestroyed: false,\n isCreated: false,\n scrollParents: [],\n };\n\n // get reference and popper elements (allow jQuery wrappers)\n this.reference = reference && reference.jquery ? reference[0] : reference;\n this.popper = popper && popper.jquery ? popper[0] : popper;\n\n // Deep merge modifiers options\n this.options.modifiers = {};\n Object.keys({\n ...Popper.Defaults.modifiers,\n ...options.modifiers,\n }).forEach(name => {\n this.options.modifiers[name] = {\n // If it's a built-in modifier, use it as base\n ...(Popper.Defaults.modifiers[name] || {}),\n // If there are custom options, override and merge with default ones\n ...(options.modifiers ? options.modifiers[name] : {}),\n };\n });\n\n // Refactoring modifiers' list (Object => Array)\n this.modifiers = Object.keys(this.options.modifiers)\n .map(name => ({\n name,\n ...this.options.modifiers[name],\n }))\n // sort the modifiers by order\n .sort((a, b) => a.order - b.order);\n\n // modifiers have the ability to execute arbitrary code when Popper.js get inited\n // such code is executed in the same order of its modifier\n // they could add new properties to their options configuration\n // BE AWARE: don't add options to `options.modifiers.name` but to `modifierOptions`!\n this.modifiers.forEach(modifierOptions => {\n if (modifierOptions.enabled && isFunction(modifierOptions.onLoad)) {\n modifierOptions.onLoad(\n this.reference,\n this.popper,\n this.options,\n modifierOptions,\n this.state\n );\n }\n });\n\n // fire the first update to position the popper in the right place\n this.update();\n\n const eventsEnabled = this.options.eventsEnabled;\n if (eventsEnabled) {\n // setup event listeners, they will take care of update the position in specific situations\n this.enableEventListeners();\n }\n\n this.state.eventsEnabled = eventsEnabled;\n }\n\n // We can't use class properties because they don't get listed in the\n // class prototype and break stuff like Sinon stubs\n update() {\n return update.call(this);\n }\n destroy() {\n return destroy.call(this);\n }\n enableEventListeners() {\n return enableEventListeners.call(this);\n }\n disableEventListeners() {\n return disableEventListeners.call(this);\n }\n\n /**\n * Schedules an update. It will run on the next UI update available.\n * @method scheduleUpdate\n * @memberof Popper\n */\n scheduleUpdate = () => requestAnimationFrame(this.update);\n\n /**\n * Collection of utilities useful when writing custom modifiers.\n * Starting from version 1.7, this method is available only if you\n * include `popper-utils.js` before `popper.js`.\n *\n * **DEPRECATION**: This way to access PopperUtils is deprecated\n * and will be removed in v2! Use the PopperUtils module directly instead.\n * Due to the high instability of the methods contained in Utils, we can't\n * guarantee them to follow semver. Use them at your own risk!\n * @static\n * @private\n * @type {Object}\n * @deprecated since version 1.8\n * @member Utils\n * @memberof Popper\n */\n static Utils = (typeof window !== 'undefined' ? window : global).PopperUtils;\n\n static placements = placements;\n\n static Defaults = Defaults;\n}\n\n/**\n * The `referenceObject` is an object that provides an interface compatible with Popper.js\n * and lets you use it as replacement of a real DOM node.
\n * You can use this method to position a popper relatively to a set of coordinates\n * in case you don't have a DOM node to use as reference.\n *\n * ```\n * new Popper(referenceObject, popperNode);\n * ```\n *\n * NB: This feature isn't supported in Internet Explorer 10.\n * @name referenceObject\n * @property {Function} data.getBoundingClientRect\n * A function that returns a set of coordinates compatible with the native `getBoundingClientRect` method.\n * @property {number} data.clientWidth\n * An ES6 getter that will return the width of the virtual reference element.\n * @property {number} data.clientHeight\n * An ES6 getter that will return the height of the virtual reference element.\n */\n","import Vue from 'vue';\nimport App from './App.vue';\nimport Vue2Filters from 'vue2-filters';\n\nimport '@fortawesome/fontawesome-free/css/all.css';\n\nimport 'bootstrap/dist/css/bootstrap.css';\nimport 'bootstrap';\n\n// Vue.config.productionTip = false;\n\nVue.use( Vue2Filters );\n\nnew Vue( {\n\trender: h => h( App ),\n} ).$mount( '#app' );\n\nif ( ! Element.prototype.scrollIntoViewIfNeeded ) {\n\n\tElement.prototype.scrollIntoViewIfNeeded = function ( centerIfNeeded ) {\n\n\t\tcenterIfNeeded = arguments.length === 0 ? true : !! centerIfNeeded;\n\n\t\tconst parent = getParent( this );\n\t\tconst parentComputedStyle = window.getComputedStyle( parent, null );\n\t\tconst parentBorderTopWidth = parseInt( parentComputedStyle.getPropertyValue( 'border-top-width' ) );\n\t\tconst parentBorderLeftWidth = parseInt( parentComputedStyle.getPropertyValue( 'border-left-width' ) );\n\t\tconst overTop = this.offsetTop - parent.offsetTop < parent.scrollTop;\n\t\tconst overBottom = ( this.offsetTop - parent.offsetTop + this.clientHeight - parentBorderTopWidth ) > ( parent.scrollTop + parent.clientHeight );\n\t\tconst overLeft = this.offsetLeft - parent.offsetLeft < parent.scrollLeft;\n\t\tconst overRight = ( this.offsetLeft - parent.offsetLeft + this.clientWidth - parentBorderLeftWidth ) > ( parent.scrollLeft + parent.clientWidth );\n\t\tconst alignWithTop = overTop && ! overBottom;\n\n\t\tif ( ( overTop || overBottom ) && centerIfNeeded ) {\n\n\t\t\tparent.scrollTop = this.offsetTop - parent.offsetTop - parent.clientHeight / 2 - parentBorderTopWidth + this.clientHeight / 2;\n\n\t\t}\n\n\t\tif ( ( overLeft || overRight ) && centerIfNeeded ) {\n\n\t\t\tparent.scrollLeft = this.offsetLeft - parent.offsetLeft - parent.clientWidth / 2 - parentBorderLeftWidth + this.clientWidth / 2;\n\n\t\t}\n\n\t\tif ( ( overTop || overBottom || overLeft || overRight ) && ! centerIfNeeded ) {\n\n\t\t\tthis.scrollIntoView( alignWithTop );\n\n\t\t}\n\n\t};\n\n}\n\nfunction getParent( el ) {\n\n\tvar parent = el.parentNode;\n\n\tif ( parent === document ) {\n\n\t\treturn document;\n\n\t} else if ( parent.offsetHeight < parent.scrollHeight || parent.offsetWidth < parent.scrollWidth ) {\n\n\t\treturn parent;\n\n\t} else {\n\n\t\treturn getParent( parent );\n\n\t}\n\n}\n","(function webpackUniversalModuleDefinition(root, factory) {\n\tif(typeof 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{};\n__webpack_require__.r(other_namespaceObject);\n__webpack_require__.d(other_namespaceObject, \"currency\", function() { return other_currency; });\n__webpack_require__.d(other_namespaceObject, \"bytes\", function() { return other_bytes; });\n__webpack_require__.d(other_namespaceObject, \"pluralize\", function() { return other_pluralize; });\n__webpack_require__.d(other_namespaceObject, \"ordinal\", function() { return other_ordinal; });\n__webpack_require__.d(other_namespaceObject, \"number\", function() { return other_number; });\n__webpack_require__.d(other_namespaceObject, \"percent\", function() { return other_percent; });\n\n// CONCATENATED MODULE: ./src/util/index.js\nfunction _toConsumableArray(arr) { return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread(); }\n\nfunction _nonIterableSpread() { throw new TypeError(\"Invalid attempt to spread non-iterable instance.\\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.\"); }\n\nfunction _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === \"string\") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === \"Object\" && o.constructor) n = o.constructor.name; if (n === \"Map\" || n === \"Set\") return Array.from(o); if (n === \"Arguments\" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }\n\nfunction _iterableToArray(iter) { if (typeof Symbol !== \"undefined\" && Symbol.iterator in Object(iter)) return Array.from(iter); }\n\nfunction _arrayWithoutHoles(arr) { if (Array.isArray(arr)) return _arrayLikeToArray(arr); }\n\nfunction _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }\n\nfunction _typeof(obj) { \"@babel/helpers - typeof\"; if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; } return _typeof(obj); }\n\nvar ArrayProto = Array.prototype,\n ObjProto = Object.prototype;\nvar slice = ArrayProto.slice,\n util_toString = ObjProto.toString;\nvar util = {};\n\nutil.isArray = function (obj) {\n return Array.isArray(obj);\n};\n\nvar MAX_ARRAY_INDEX = Math.pow(2, 53) - 1;\n\nutil.isArrayLike = function (obj) {\n if (_typeof(obj) !== 'object' || !obj) {\n return false;\n }\n\n var length = obj.length;\n return typeof length === 'number' && length % 1 === 0 && length >= 0 && length <= MAX_ARRAY_INDEX;\n};\n\nutil.isObject = function (obj) {\n var type = _typeof(obj);\n\n return type === 'function' || type === 'object' && !!obj;\n};\n\nutil.each = function (obj, callback) {\n var i, len;\n\n if (util.isArray(obj)) {\n for (i = 0, len = obj.length; i < len; i++) {\n if (callback(obj[i], i, obj) === false) {\n break;\n }\n }\n } else {\n for (i in obj) {\n if (callback(obj[i], i, obj) === false) {\n break;\n }\n }\n }\n\n return obj;\n};\n\nutil.each(['Arguments', 'Function', 'String', 'Number', 'Date', 'RegExp', 'Error'], function (name) {\n util['is' + name] = function (obj) {\n return util_toString.call(obj) === '[object ' + name + ']';\n };\n});\n\nutil.toArray = function (list, start) {\n start = start || 0;\n var i = list.length - start;\n var ret = new Array(i);\n\n while (i--) {\n ret[i] = list[i + start];\n }\n\n return ret;\n};\n\nutil.toNumber = function (value) {\n if (typeof value !== 'string') {\n return value;\n } else {\n var parsed = Number(value);\n return isNaN(parsed) ? value : parsed;\n }\n};\n\nutil.convertRangeToArray = function (range) {\n return _toConsumableArray(Array(range + 1).keys()).slice(1);\n};\n\nutil.convertArray = function (value) {\n if (util.isArray(value)) {\n return value;\n } else if (util.isPlainObject(value)) {\n // convert plain object to array.\n var keys = Object.keys(value);\n var i = keys.length;\n var res = new Array(i);\n var key;\n\n while (i--) {\n key = keys[i];\n res[i] = {\n $key: key,\n $value: value[key]\n };\n }\n\n return res;\n } else {\n return value || [];\n }\n};\n\nfunction multiIndex(obj, is) {\n // obj,['1','2','3'] -> ((obj['1'])['2'])['3']\n return is.length ? multiIndex(obj[is[0]], is.slice(1)) : obj;\n}\n\nutil.getPath = function (obj, is) {\n // obj,'1.2.3' -> multiIndex(obj,['1','2','3'])\n return multiIndex(obj, is.split('.'));\n};\n/**\n * Strict object type check. Only returns true\n * for plain JavaScript objects.\n *\n * @param {*} obj\n * @return {Boolean}\n */\n\n\nvar util_toString = Object.prototype.toString;\nvar OBJECT_STRING = '[object Object]';\n\nutil.isPlainObject = function (obj) {\n return util_toString.call(obj) === OBJECT_STRING;\n};\n\nutil.exist = function (value) {\n return value !== null && typeof value !== 'undefined';\n};\n\n/* harmony default export */ var src_util = (util);\n// CONCATENATED MODULE: ./src/string/capitalize.js\n/**\n * Converts a string into Capitalize\n * \n * 'abc' => 'Abc'\n * \n * @param {Object} options\n */\nfunction capitalize(value, options) {\n var globalOptions = this && this.capitalize ? this.capitalize : {};\n options = options || globalOptions;\n var onlyFirstLetter = options.onlyFirstLetter != null ? options.onlyFirstLetter : false;\n if (!value && value !== 0) return '';\n\n if (onlyFirstLetter === true) {\n return value.toString().charAt(0).toUpperCase() + value.toString().slice(1);\n } else {\n value = value.toString().toLowerCase().split(' ');\n return value.map(function (item) {\n return item.charAt(0).toUpperCase() + item.slice(1);\n }).join(' ');\n }\n}\n\n/* harmony default export */ var string_capitalize = (capitalize);\n// CONCATENATED MODULE: ./src/string/uppercase.js\n/**\n * Converts a string to UPPERCASE\n * \n * 'abc' => 'ABC'\n */\nfunction uppercase(value) {\n return value || value === 0 ? value.toString().toUpperCase() : '';\n}\n\n/* harmony default export */ var string_uppercase = (uppercase);\n// CONCATENATED MODULE: ./src/string/lowercase.js\n/**\n * Converts a string to lowercase\n * \n * 'AbC' => 'abc'\n */\nfunction lowercase(value) {\n return value || value === 0 ? value.toString().toLowerCase() : '';\n}\n\n/* harmony default export */ var string_lowercase = (lowercase);\n// CONCATENATED MODULE: ./src/string/placeholder.js\n/**\n * If the value is missing outputs the placeholder text\n * \n * '' => {placeholder}\n * 'foo' => 'foo'\n */\nfunction placeholder(input, property) {\n return input === undefined || input === '' || input === null ? property : input;\n}\n\n/* harmony default export */ var string_placeholder = (placeholder);\n// CONCATENATED MODULE: ./src/string/truncate.js\n/**\n * Truncate at the given || default length\n *\n * 'lorem ipsum dolor' => 'lorem ipsum dol...'\n */\nfunction truncate(value, length) {\n length = length || 15;\n if (!value || typeof value !== 'string') return '';\n if (value.length <= length) return value;\n return value.substring(0, length) + '...';\n}\n\n/* harmony default export */ var string_truncate = (truncate);\n// CONCATENATED MODULE: ./src/string/index.js\n\n\n\n\n\n\n// CONCATENATED MODULE: ./src/array/limitBy.js\n\n/**\n * Limit filter for arrays\n *\n * @param {Number|Array} arr (If Number, decimal expected)\n * @param {Number} n\n * @param {Number} offset (Decimal expected)\n */\n\nfunction limitBy(arr, n, offset) {\n arr = src_util.isArray(arr) ? arr : src_util.convertRangeToArray(arr);\n offset = offset ? parseInt(offset, 10) : 0;\n n = src_util.toNumber(n);\n return typeof n === 'number' ? arr.slice(offset, offset + n) : arr;\n}\n\n/* harmony default export */ var array_limitBy = (limitBy);\n// CONCATENATED MODULE: ./src/array/filterBy.js\n\n/**\n * Filter filter for arrays\n *\n * @param {Array} arr\n * @param {String} prop\n * @param {String|Number} search\n */\n\nfunction filterBy(arr, search) {\n var arr = src_util.convertArray(arr);\n\n if (search == null) {\n return arr;\n }\n\n if (typeof search === 'function') {\n return arr.filter(search);\n } // cast to lowercase string\n\n\n search = ('' + search).toLowerCase();\n var n = 2; // extract and flatten keys\n\n var keys = Array.prototype.concat.apply([], src_util.toArray(arguments, n));\n var res = [];\n var item, key, val, j;\n\n for (var i = 0, l = arr.length; i < l; i++) {\n item = arr[i];\n val = item && item.$value || item;\n j = keys.length;\n\n if (j) {\n while (j--) {\n key = keys[j];\n\n if (key === '$key' && contains(item.$key, search) || contains(src_util.getPath(val, key), search)) {\n res.push(item);\n break;\n }\n }\n } else if (contains(item, search)) {\n res.push(item);\n }\n }\n\n return res;\n}\n\nfunction contains(val, search) {\n var i;\n\n if (src_util.isPlainObject(val)) {\n var keys = Object.keys(val);\n i = keys.length;\n\n while (i--) {\n if (contains(val[keys[i]], search)) {\n return true;\n }\n }\n } else if (src_util.isArray(val)) {\n i = val.length;\n\n while (i--) {\n if (contains(val[i], search)) {\n return true;\n }\n }\n } else if (val != null) {\n return val.toString().toLowerCase().indexOf(search) > -1;\n }\n}\n\n/* harmony default export */ var array_filterBy = (filterBy);\n// CONCATENATED MODULE: ./src/array/orderBy.js\n\n/**\n * Filter filter for arrays\n *\n * @param {String|Array|Function} ...sortKeys\n * @param {Number} [order]\n */\n\nfunction orderBy(arr) {\n var _comparator = null;\n var sortKeys;\n arr = src_util.convertArray(arr); // determine order (last argument)\n\n var args = src_util.toArray(arguments, 1);\n var order = args[args.length - 1];\n\n if (typeof order === 'number') {\n order = order < 0 ? -1 : 1;\n args = args.length > 1 ? args.slice(0, -1) : args;\n } else {\n order = 1;\n } // determine sortKeys & comparator\n\n\n var firstArg = args[0];\n\n if (!firstArg) {\n return arr;\n } else if (typeof firstArg === 'function') {\n // custom comparator\n _comparator = function comparator(a, b) {\n return firstArg(a, b) * order;\n };\n } else {\n // string keys. flatten first\n sortKeys = Array.prototype.concat.apply([], args);\n\n _comparator = function comparator(a, b, i) {\n i = i || 0;\n return i >= sortKeys.length - 1 ? baseCompare(a, b, i) : baseCompare(a, b, i) || _comparator(a, b, i + 1);\n };\n }\n\n function baseCompare(a, b, sortKeyIndex) {\n var sortKey = sortKeys[sortKeyIndex];\n\n if (sortKey) {\n if (sortKey !== '$key') {\n if (src_util.isObject(a) && '$value' in a) a = a.$value;\n if (src_util.isObject(b) && '$value' in b) b = b.$value;\n }\n\n a = src_util.isObject(a) ? src_util.getPath(a, sortKey) : a;\n b = src_util.isObject(b) ? src_util.getPath(b, sortKey) : b;\n a = typeof a === 'string' ? a.toLowerCase() : a;\n b = typeof b === 'string' ? b.toLowerCase() : b;\n }\n\n return a === b ? 0 : a > b ? order : -order;\n } // sort on a copy to avoid mutating original array\n\n\n return arr.slice().sort(_comparator);\n}\n\n/* harmony default export */ var array_orderBy = (orderBy);\n// CONCATENATED MODULE: ./src/array/find.js\n\n/**\n * Get first matching element from a filtered array\n *\n * @param {Array} arr\n * @param {String|Number} search\n * @returns {mixed}\n */\n\nfunction find(arr, search) {\n var array = array_filterBy.apply(this, arguments);\n array.splice(1);\n return array;\n}\n\n/* harmony default export */ var array_find = (find);\n// CONCATENATED MODULE: ./src/array/index.js\n\n\n\n\n\n// CONCATENATED MODULE: ./src/other/currency.js\n\n/**\n * \n * 12345 => $12,345.00\n *\n * @param {String} symbol\n * @param {Number} decimals Decimal places\n * @param {Object} options\n */\n\nfunction currency(value, symbol, decimals, options) {\n var globalOptions = this && this.currency ? this.currency : {};\n symbol = src_util.exist(symbol) ? symbol : globalOptions.symbol;\n decimals = src_util.exist(decimals) ? decimals : globalOptions.decimalDigits;\n options = options || globalOptions;\n var thousandsSeparator, symbolOnLeft, spaceBetweenAmountAndSymbol, showPlusSign;\n var digitsRE = /(\\d{3})(?=\\d)/g;\n value = parseFloat(value);\n if (!isFinite(value) || !value && value !== 0) return '';\n symbol = typeof symbol !== 'undefined' ? symbol : '$';\n decimals = typeof decimals !== 'undefined' ? decimals : 2;\n thousandsSeparator = options.thousandsSeparator != null ? options.thousandsSeparator : ',';\n symbolOnLeft = options.symbolOnLeft != null ? options.symbolOnLeft : true;\n spaceBetweenAmountAndSymbol = options.spaceBetweenAmountAndSymbol != null ? options.spaceBetweenAmountAndSymbol : false;\n showPlusSign = options.showPlusSign != null ? options.showPlusSign : false;\n var number = Math.abs(value);\n var stringified = toFixed(number, decimals);\n stringified = options.decimalSeparator ? stringified.replace('.', options.decimalSeparator) : stringified;\n\n var _int = decimals ? stringified.slice(0, -1 - decimals) : stringified;\n\n var i = _int.length % 3;\n var head = i > 0 ? _int.slice(0, i) + (_int.length > 3 ? thousandsSeparator : '') : '';\n\n var _float = decimals ? stringified.slice(-1 - decimals) : '';\n\n symbol = spaceBetweenAmountAndSymbol ? symbolOnLeft ? symbol + ' ' : ' ' + symbol : symbol;\n symbol = symbolOnLeft ? symbol + head + _int.slice(i).replace(digitsRE, '$1' + thousandsSeparator) + _float : head + _int.slice(i).replace(digitsRE, '$1' + thousandsSeparator) + _float + symbol;\n var sign = value < 0 ? '-' : '';\n var plusSign = value > 0 && showPlusSign ? '+' : '';\n return plusSign + sign + symbol;\n}\n\nfunction toFixed(num, precision) {\n return (+(Math.round(+(num + 'e' + precision)) + 'e' + -precision)).toFixed(precision);\n}\n\n/* harmony default export */ var other_currency = (currency);\n// CONCATENATED MODULE: ./src/other/bytes.js\n\n/**\n * 1 => '8 byte'\n * 8 => '8 bytes'\n * 1024 => '1.00 kB'\n * 2000000 => '1.90 MB'\n * 2000000000 => '1.86 GB'\n * 2000000000000 => '1.82 TB'\n *\n * @param {Number} value\n * @param {Number} decimals Decimal places (default: 2)\n */\n\nfunction bytes(value, decimals) {\n var globalOptions = this && this.bytes ? this.bytes : {};\n decimals = src_util.exist(decimals) ? decimals : globalOptions.decimalDigits;\n decimals = typeof decimals !== 'undefined' ? decimals : 2;\n value = value === null || isNaN(value) ? 0 : value;\n\n if (value >= Math.pow(1024, 4)) {\n // TB\n return \"\".concat((value / Math.pow(1024, 4)).toFixed(decimals), \" TB\");\n } else if (value >= Math.pow(1024, 3)) {\n // GB\n return \"\".concat((value / Math.pow(1024, 3)).toFixed(decimals), \" GB\");\n } else if (value >= Math.pow(1024, 2)) {\n // MB\n return \"\".concat((value / Math.pow(1024, 2)).toFixed(decimals), \" MB\");\n } else if (value >= 1024) {\n // kb\n return \"\".concat((value / 1024).toFixed(decimals), \" kB\");\n } // byte\n\n\n return value === 1 ? \"\".concat(value, \" byte\") : \"\".concat(value, \" bytes\");\n}\n\n/* harmony default export */ var other_bytes = (bytes);\n// CONCATENATED MODULE: ./src/other/pluralize.js\n\n/**\n * 'item' => 'items'\n *\n * @param {String|Array} word\n * @param {Object} options\n *\n */\n\nfunction pluralize(value, word, options) {\n var globalOptions = this && this.pluralize ? this.pluralize : {};\n options = options || globalOptions;\n var output = '';\n var includeNumber = options.includeNumber != null ? options.includeNumber : false;\n if (includeNumber === true) output += value + ' ';\n if (!value && value !== 0 || !word) return output;\n\n if (Array.isArray(word)) {\n output += word[value - 1] || word[word.length - 1];\n } else {\n output += word + (value === 1 ? '' : 's');\n }\n\n return output;\n}\n\n/* harmony default export */ var other_pluralize = (pluralize);\n// CONCATENATED MODULE: ./src/other/ordinal.js\n\n/**\n * 42 => 'nd'\n *\n * @params {Object} options\n * \n */\n\nfunction ordinal(value, options) {\n var globalOptions = this && this.ordinal ? this.ordinal : {};\n options = options || globalOptions;\n var output = '';\n var includeNumber = options.includeNumber != null ? options.includeNumber : false;\n if (includeNumber === true) output += value;\n var j = value % 10,\n k = value % 100;\n if (j == 1 && k != 11) output += 'st';else if (j == 2 && k != 12) output += 'nd';else if (j == 3 && k != 13) output += 'rd';else output += 'th';\n return output;\n}\n\n/* harmony default export */ var other_ordinal = (ordinal);\n// CONCATENATED MODULE: ./src/other/number.js\n\n/**\n * 123456 => '123,456'\n *\n * @params {Object} options\n *\n */\n\nfunction number_number(value, format, options) {\n var globalOptions = this && this.number ? this.number : {};\n format = src_util.exist(format) ? format : globalOptions.format;\n options = options || globalOptions;\n var config = parseFormat(format);\n var number = parseNumber(value);\n var thousandsSeparator = options.thousandsSeparator != null ? options.thousandsSeparator : ',';\n var decimalSeparator = options.decimalSeparator != null ? options.decimalSeparator : '.';\n config.sign = config.sign || number.sign;\n\n if (config.unit) {\n var numberWithUnit = addUnit(number.float, config);\n return config.sign + numberWithUnit;\n }\n\n var rounded = number_toFixed(number.float, config.decimals);\n var output = addSeparators(rounded, config.base, thousandsSeparator, decimalSeparator);\n return config.sign + output;\n}\n\nMath.sign = function (x) {\n x = +x;\n\n if (x === 0 || isNaN(x)) {\n return x;\n }\n\n return x > 0 ? 1 : -1;\n};\n\nfunction parseNumber(num) {\n return {\n float: Math.abs(parseFloat(num)),\n int: Math.abs(parseInt(num)),\n sign: Math.sign(num) < 0 ? '-' : ''\n };\n}\n\nfunction parseFormat() {\n var string = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : '0';\n var regex = /([\\+\\-])?([0-9\\,]+)?([\\.0-9]+)?([a\\s]+)?/;\n var matches = string ? string.match(regex) : ['', '', '', '', ''];\n var float = matches[3];\n var decimals = float ? float.match(/0/g).length : 0;\n return {\n sign: matches[1] || '',\n base: matches[2] || '',\n decimals: decimals,\n unit: matches[4] || ''\n };\n}\n\nfunction addUnit(num, config) {\n var rx = /\\.0+$|(\\.[0-9]*[1-9])0+$/;\n var si = [{\n value: 1,\n symbol: ''\n }, {\n value: 1e3,\n symbol: 'K'\n }, {\n value: 1e6,\n symbol: 'M'\n }];\n var i;\n\n for (i = si.length - 1; i > 0; i--) {\n if (num >= si[i].value) {\n break;\n }\n }\n\n num = (num / si[i].value).toFixed(config.decimals).replace(rx, '$1');\n return num + config.unit.replace('a', si[i].symbol);\n}\n\nfunction addSeparators(num, base, thousandsSeparator, decimalSeparator) {\n var regex = /(\\d+)(\\d{3})/;\n var string = num.toString();\n var x = string.split('.');\n var x1 = x[0];\n var x2 = x.length > 1 ? decimalSeparator + x[1] : '';\n\n switch (base) {\n case '':\n x1 = '';\n break;\n\n case '0,0':\n while (regex.test(x1)) {\n x1 = x1.replace(regex, '$1' + thousandsSeparator + '$2');\n }\n\n break;\n }\n\n return x1 + x2;\n}\n\nfunction getFraction(num, decimals, separator) {\n var fraction = number_toFixed(num, decimals).toString().split('.')[1];\n return fraction ? separator + fraction : '';\n}\n\nfunction number_toFixed(num, precision) {\n return (+(Math.round(+(num + 'e' + precision)) + 'e' + -precision)).toFixed(precision);\n}\n\n/* harmony default export */ var other_number = (number_number);\n// CONCATENATED MODULE: ./src/other/percent.js\n\n/**\n * 1.2 => '120%'\n * -0.2 => '-20%'\n * 100 => '10000%'\n * 1 => '100%'\n * 0.97 => '97%'\n *\n * @param {Number} value\n * @param {Number} decimals Decimal places (default: 2)\n * @param {Number} multiplier (default: 100)\n * @params {Object} options\n */\n\nfunction percent(value, decimals, multiplier, options) {\n var globalOptions = this && this.percent ? this.percent : {};\n options = options || globalOptions;\n multiplier = src_util.exist(multiplier) ? multiplier : globalOptions.multiplier;\n multiplier = typeof multiplier !== 'undefined' ? multiplier : 100;\n decimals = src_util.exist(decimals) ? decimals : globalOptions.decimalDigits;\n decimals = typeof decimals !== 'undefined' ? decimals : 0;\n var decimalSeparator = options.decimalSeparator != null ? options.decimalSeparator : '.';\n value = value === null || isNaN(value) ? 0 : value;\n return \"\".concat((value * multiplier).toFixed(decimals).replace('.', decimalSeparator), \"%\");\n}\n\n/* harmony default export */ var other_percent = (percent);\n// CONCATENATED MODULE: ./src/other/index.js\n\n\n\n\n\n\n\n// CONCATENATED MODULE: ./src/index.js\n\n\n\n\nvar Vue2Filters = {\n install: function install(Vue, options) {\n src_util.each(string_namespaceObject, function (value, key) {\n Vue.filter(key, value.bind(options));\n });\n src_util.each(other_namespaceObject, function (value, key) {\n Vue.filter(key, value.bind(options));\n });\n },\n mixin: {\n methods: {\n limitBy: array_limitBy,\n filterBy: array_filterBy,\n orderBy: array_orderBy,\n find: array_find\n }\n }\n};\n/* harmony default export */ var src = __webpack_exports__[\"default\"] = (Vue2Filters);\n\nif (typeof window !== 'undefined' && window.Vue) {\n window.Vue.use(Vue2Filters);\n window.Vue2Filters = Vue2Filters;\n}\n\n/***/ })\n/******/ ]);\n});","/*!\n * Bootstrap v4.6.2 (https://getbootstrap.com/)\n * Copyright 2011-2022 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)\n */\n(function (global, factory) {\n typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('jquery'), require('popper.js')) :\n typeof define === 'function' && define.amd ? define(['exports', 'jquery', 'popper.js'], factory) :\n (global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.bootstrap = {}, global.jQuery, global.Popper));\n})(this, (function (exports, $, Popper) { 'use strict';\n\n function _interopDefaultLegacy (e) { return e && typeof e === 'object' && 'default' in e ? e : { 'default': e }; }\n\n var $__default = /*#__PURE__*/_interopDefaultLegacy($);\n var Popper__default = /*#__PURE__*/_interopDefaultLegacy(Popper);\n\n function _defineProperties(target, props) {\n for (var i = 0; i < props.length; i++) {\n var descriptor = props[i];\n descriptor.enumerable = descriptor.enumerable || false;\n descriptor.configurable = true;\n if (\"value\" in descriptor) descriptor.writable = true;\n Object.defineProperty(target, descriptor.key, descriptor);\n }\n }\n\n function _createClass(Constructor, protoProps, staticProps) {\n if (protoProps) _defineProperties(Constructor.prototype, protoProps);\n if (staticProps) _defineProperties(Constructor, staticProps);\n Object.defineProperty(Constructor, \"prototype\", {\n writable: false\n });\n return Constructor;\n }\n\n function _extends() {\n _extends = Object.assign ? Object.assign.bind() : function (target) {\n for (var i = 1; i < arguments.length; i++) {\n var source = arguments[i];\n\n for (var key in source) {\n if (Object.prototype.hasOwnProperty.call(source, key)) {\n target[key] = source[key];\n }\n }\n }\n\n return target;\n };\n return _extends.apply(this, arguments);\n }\n\n function _inheritsLoose(subClass, superClass) {\n subClass.prototype = Object.create(superClass.prototype);\n subClass.prototype.constructor = subClass;\n\n _setPrototypeOf(subClass, superClass);\n }\n\n function _setPrototypeOf(o, p) {\n _setPrototypeOf = Object.setPrototypeOf ? Object.setPrototypeOf.bind() : function _setPrototypeOf(o, p) {\n o.__proto__ = p;\n return o;\n };\n return _setPrototypeOf(o, p);\n }\n\n /**\n * --------------------------------------------------------------------------\n * Bootstrap (v4.6.2): util.js\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)\n * --------------------------------------------------------------------------\n */\n /**\n * Private TransitionEnd Helpers\n */\n\n var TRANSITION_END = 'transitionend';\n var MAX_UID = 1000000;\n var MILLISECONDS_MULTIPLIER = 1000; // Shoutout AngusCroll (https://goo.gl/pxwQGp)\n\n function toType(obj) {\n if (obj === null || typeof obj === 'undefined') {\n return \"\" + obj;\n }\n\n return {}.toString.call(obj).match(/\\s([a-z]+)/i)[1].toLowerCase();\n }\n\n function getSpecialTransitionEndEvent() {\n return {\n bindType: TRANSITION_END,\n delegateType: TRANSITION_END,\n handle: function handle(event) {\n if ($__default[\"default\"](event.target).is(this)) {\n return event.handleObj.handler.apply(this, arguments); // eslint-disable-line prefer-rest-params\n }\n\n return undefined;\n }\n };\n }\n\n function transitionEndEmulator(duration) {\n var _this = this;\n\n var called = false;\n $__default[\"default\"](this).one(Util.TRANSITION_END, function () {\n called = true;\n });\n setTimeout(function () {\n if (!called) {\n Util.triggerTransitionEnd(_this);\n }\n }, duration);\n return this;\n }\n\n function setTransitionEndSupport() {\n $__default[\"default\"].fn.emulateTransitionEnd = transitionEndEmulator;\n $__default[\"default\"].event.special[Util.TRANSITION_END] = getSpecialTransitionEndEvent();\n }\n /**\n * Public Util API\n */\n\n\n var Util = {\n TRANSITION_END: 'bsTransitionEnd',\n getUID: function getUID(prefix) {\n do {\n // eslint-disable-next-line no-bitwise\n prefix += ~~(Math.random() * MAX_UID); // \"~~\" acts like a faster Math.floor() here\n } while (document.getElementById(prefix));\n\n return prefix;\n },\n getSelectorFromElement: function getSelectorFromElement(element) {\n var selector = element.getAttribute('data-target');\n\n if (!selector || selector === '#') {\n var hrefAttr = element.getAttribute('href');\n selector = hrefAttr && hrefAttr !== '#' ? hrefAttr.trim() : '';\n }\n\n try {\n return document.querySelector(selector) ? selector : null;\n } catch (_) {\n return null;\n }\n },\n getTransitionDurationFromElement: function getTransitionDurationFromElement(element) {\n if (!element) {\n return 0;\n } // Get transition-duration of the element\n\n\n var transitionDuration = $__default[\"default\"](element).css('transition-duration');\n var transitionDelay = $__default[\"default\"](element).css('transition-delay');\n var floatTransitionDuration = parseFloat(transitionDuration);\n var floatTransitionDelay = parseFloat(transitionDelay); // Return 0 if element or transition duration is not found\n\n if (!floatTransitionDuration && !floatTransitionDelay) {\n return 0;\n } // If multiple durations are defined, take the first\n\n\n transitionDuration = transitionDuration.split(',')[0];\n transitionDelay = transitionDelay.split(',')[0];\n return (parseFloat(transitionDuration) + parseFloat(transitionDelay)) * MILLISECONDS_MULTIPLIER;\n },\n reflow: function reflow(element) {\n return element.offsetHeight;\n },\n triggerTransitionEnd: function triggerTransitionEnd(element) {\n $__default[\"default\"](element).trigger(TRANSITION_END);\n },\n supportsTransitionEnd: function supportsTransitionEnd() {\n return Boolean(TRANSITION_END);\n },\n isElement: function isElement(obj) {\n return (obj[0] || obj).nodeType;\n },\n typeCheckConfig: function typeCheckConfig(componentName, config, configTypes) {\n for (var property in configTypes) {\n if (Object.prototype.hasOwnProperty.call(configTypes, property)) {\n var expectedTypes = configTypes[property];\n var value = config[property];\n var valueType = value && Util.isElement(value) ? 'element' : toType(value);\n\n if (!new RegExp(expectedTypes).test(valueType)) {\n throw new Error(componentName.toUpperCase() + \": \" + (\"Option \\\"\" + property + \"\\\" provided type \\\"\" + valueType + \"\\\" \") + (\"but expected type \\\"\" + expectedTypes + \"\\\".\"));\n }\n }\n }\n },\n findShadowRoot: function findShadowRoot(element) {\n if (!document.documentElement.attachShadow) {\n return null;\n } // Can find the shadow root otherwise it'll return the document\n\n\n if (typeof element.getRootNode === 'function') {\n var root = element.getRootNode();\n return root instanceof ShadowRoot ? root : null;\n }\n\n if (element instanceof ShadowRoot) {\n return element;\n } // when we don't find a shadow root\n\n\n if (!element.parentNode) {\n return null;\n }\n\n return Util.findShadowRoot(element.parentNode);\n },\n jQueryDetection: function jQueryDetection() {\n if (typeof $__default[\"default\"] === 'undefined') {\n throw new TypeError('Bootstrap\\'s JavaScript requires jQuery. jQuery must be included before Bootstrap\\'s JavaScript.');\n }\n\n var version = $__default[\"default\"].fn.jquery.split(' ')[0].split('.');\n var minMajor = 1;\n var ltMajor = 2;\n var minMinor = 9;\n var minPatch = 1;\n var maxMajor = 4;\n\n if (version[0] < ltMajor && version[1] < minMinor || version[0] === minMajor && version[1] === minMinor && version[2] < minPatch || version[0] >= maxMajor) {\n throw new Error('Bootstrap\\'s JavaScript requires at least jQuery v1.9.1 but less than v4.0.0');\n }\n }\n };\n Util.jQueryDetection();\n setTransitionEndSupport();\n\n /**\n * Constants\n */\n\n var NAME$a = 'alert';\n var VERSION$a = '4.6.2';\n var DATA_KEY$a = 'bs.alert';\n var EVENT_KEY$a = \".\" + DATA_KEY$a;\n var DATA_API_KEY$7 = '.data-api';\n var JQUERY_NO_CONFLICT$a = $__default[\"default\"].fn[NAME$a];\n var CLASS_NAME_ALERT = 'alert';\n var CLASS_NAME_FADE$5 = 'fade';\n var CLASS_NAME_SHOW$7 = 'show';\n var EVENT_CLOSE = \"close\" + EVENT_KEY$a;\n var EVENT_CLOSED = \"closed\" + EVENT_KEY$a;\n var EVENT_CLICK_DATA_API$6 = \"click\" + EVENT_KEY$a + DATA_API_KEY$7;\n var SELECTOR_DISMISS = '[data-dismiss=\"alert\"]';\n /**\n * Class definition\n */\n\n var Alert = /*#__PURE__*/function () {\n function Alert(element) {\n this._element = element;\n } // Getters\n\n\n var _proto = Alert.prototype;\n\n // Public\n _proto.close = function close(element) {\n var rootElement = this._element;\n\n if (element) {\n rootElement = this._getRootElement(element);\n }\n\n var customEvent = this._triggerCloseEvent(rootElement);\n\n if (customEvent.isDefaultPrevented()) {\n return;\n }\n\n this._removeElement(rootElement);\n };\n\n _proto.dispose = function dispose() {\n $__default[\"default\"].removeData(this._element, DATA_KEY$a);\n this._element = null;\n } // Private\n ;\n\n _proto._getRootElement = function _getRootElement(element) {\n var selector = Util.getSelectorFromElement(element);\n var parent = false;\n\n if (selector) {\n parent = document.querySelector(selector);\n }\n\n if (!parent) {\n parent = $__default[\"default\"](element).closest(\".\" + CLASS_NAME_ALERT)[0];\n }\n\n return parent;\n };\n\n _proto._triggerCloseEvent = function _triggerCloseEvent(element) {\n var closeEvent = $__default[\"default\"].Event(EVENT_CLOSE);\n $__default[\"default\"](element).trigger(closeEvent);\n return closeEvent;\n };\n\n _proto._removeElement = function _removeElement(element) {\n var _this = this;\n\n $__default[\"default\"](element).removeClass(CLASS_NAME_SHOW$7);\n\n if (!$__default[\"default\"](element).hasClass(CLASS_NAME_FADE$5)) {\n this._destroyElement(element);\n\n return;\n }\n\n var transitionDuration = Util.getTransitionDurationFromElement(element);\n $__default[\"default\"](element).one(Util.TRANSITION_END, function (event) {\n return _this._destroyElement(element, event);\n }).emulateTransitionEnd(transitionDuration);\n };\n\n _proto._destroyElement = function _destroyElement(element) {\n $__default[\"default\"](element).detach().trigger(EVENT_CLOSED).remove();\n } // Static\n ;\n\n Alert._jQueryInterface = function _jQueryInterface(config) {\n return this.each(function () {\n var $element = $__default[\"default\"](this);\n var data = $element.data(DATA_KEY$a);\n\n if (!data) {\n data = new Alert(this);\n $element.data(DATA_KEY$a, data);\n }\n\n if (config === 'close') {\n data[config](this);\n }\n });\n };\n\n Alert._handleDismiss = function _handleDismiss(alertInstance) {\n return function (event) {\n if (event) {\n event.preventDefault();\n }\n\n alertInstance.close(this);\n };\n };\n\n _createClass(Alert, null, [{\n key: \"VERSION\",\n get: function get() {\n return VERSION$a;\n }\n }]);\n\n return Alert;\n }();\n /**\n * Data API implementation\n */\n\n\n $__default[\"default\"](document).on(EVENT_CLICK_DATA_API$6, SELECTOR_DISMISS, Alert._handleDismiss(new Alert()));\n /**\n * jQuery\n */\n\n $__default[\"default\"].fn[NAME$a] = Alert._jQueryInterface;\n $__default[\"default\"].fn[NAME$a].Constructor = Alert;\n\n $__default[\"default\"].fn[NAME$a].noConflict = function () {\n $__default[\"default\"].fn[NAME$a] = JQUERY_NO_CONFLICT$a;\n return Alert._jQueryInterface;\n };\n\n /**\n * Constants\n */\n\n var NAME$9 = 'button';\n var VERSION$9 = '4.6.2';\n var DATA_KEY$9 = 'bs.button';\n var EVENT_KEY$9 = \".\" + DATA_KEY$9;\n var DATA_API_KEY$6 = '.data-api';\n var JQUERY_NO_CONFLICT$9 = $__default[\"default\"].fn[NAME$9];\n var CLASS_NAME_ACTIVE$3 = 'active';\n var CLASS_NAME_BUTTON = 'btn';\n var CLASS_NAME_FOCUS = 'focus';\n var EVENT_CLICK_DATA_API$5 = \"click\" + EVENT_KEY$9 + DATA_API_KEY$6;\n var EVENT_FOCUS_BLUR_DATA_API = \"focus\" + EVENT_KEY$9 + DATA_API_KEY$6 + \" \" + (\"blur\" + EVENT_KEY$9 + DATA_API_KEY$6);\n var EVENT_LOAD_DATA_API$2 = \"load\" + EVENT_KEY$9 + DATA_API_KEY$6;\n var SELECTOR_DATA_TOGGLE_CARROT = '[data-toggle^=\"button\"]';\n var SELECTOR_DATA_TOGGLES = '[data-toggle=\"buttons\"]';\n var SELECTOR_DATA_TOGGLE$4 = '[data-toggle=\"button\"]';\n var SELECTOR_DATA_TOGGLES_BUTTONS = '[data-toggle=\"buttons\"] .btn';\n var SELECTOR_INPUT = 'input:not([type=\"hidden\"])';\n var SELECTOR_ACTIVE$2 = '.active';\n var SELECTOR_BUTTON = '.btn';\n /**\n * Class definition\n */\n\n var Button = /*#__PURE__*/function () {\n function Button(element) {\n this._element = element;\n this.shouldAvoidTriggerChange = false;\n } // Getters\n\n\n var _proto = Button.prototype;\n\n // Public\n _proto.toggle = function toggle() {\n var triggerChangeEvent = true;\n var addAriaPressed = true;\n var rootElement = $__default[\"default\"](this._element).closest(SELECTOR_DATA_TOGGLES)[0];\n\n if (rootElement) {\n var input = this._element.querySelector(SELECTOR_INPUT);\n\n if (input) {\n if (input.type === 'radio') {\n if (input.checked && this._element.classList.contains(CLASS_NAME_ACTIVE$3)) {\n triggerChangeEvent = false;\n } else {\n var activeElement = rootElement.querySelector(SELECTOR_ACTIVE$2);\n\n if (activeElement) {\n $__default[\"default\"](activeElement).removeClass(CLASS_NAME_ACTIVE$3);\n }\n }\n }\n\n if (triggerChangeEvent) {\n // if it's not a radio button or checkbox don't add a pointless/invalid checked property to the input\n if (input.type === 'checkbox' || input.type === 'radio') {\n input.checked = !this._element.classList.contains(CLASS_NAME_ACTIVE$3);\n }\n\n if (!this.shouldAvoidTriggerChange) {\n $__default[\"default\"](input).trigger('change');\n }\n }\n\n input.focus();\n addAriaPressed = false;\n }\n }\n\n if (!(this._element.hasAttribute('disabled') || this._element.classList.contains('disabled'))) {\n if (addAriaPressed) {\n this._element.setAttribute('aria-pressed', !this._element.classList.contains(CLASS_NAME_ACTIVE$3));\n }\n\n if (triggerChangeEvent) {\n $__default[\"default\"](this._element).toggleClass(CLASS_NAME_ACTIVE$3);\n }\n }\n };\n\n _proto.dispose = function dispose() {\n $__default[\"default\"].removeData(this._element, DATA_KEY$9);\n this._element = null;\n } // Static\n ;\n\n Button._jQueryInterface = function _jQueryInterface(config, avoidTriggerChange) {\n return this.each(function () {\n var $element = $__default[\"default\"](this);\n var data = $element.data(DATA_KEY$9);\n\n if (!data) {\n data = new Button(this);\n $element.data(DATA_KEY$9, data);\n }\n\n data.shouldAvoidTriggerChange = avoidTriggerChange;\n\n if (config === 'toggle') {\n data[config]();\n }\n });\n };\n\n _createClass(Button, null, [{\n key: \"VERSION\",\n get: function get() {\n return VERSION$9;\n }\n }]);\n\n return Button;\n }();\n /**\n * Data API implementation\n */\n\n\n $__default[\"default\"](document).on(EVENT_CLICK_DATA_API$5, SELECTOR_DATA_TOGGLE_CARROT, function (event) {\n var button = event.target;\n var initialButton = button;\n\n if (!$__default[\"default\"](button).hasClass(CLASS_NAME_BUTTON)) {\n button = $__default[\"default\"](button).closest(SELECTOR_BUTTON)[0];\n }\n\n if (!button || button.hasAttribute('disabled') || button.classList.contains('disabled')) {\n event.preventDefault(); // work around Firefox bug #1540995\n } else {\n var inputBtn = button.querySelector(SELECTOR_INPUT);\n\n if (inputBtn && (inputBtn.hasAttribute('disabled') || inputBtn.classList.contains('disabled'))) {\n event.preventDefault(); // work around Firefox bug #1540995\n\n return;\n }\n\n if (initialButton.tagName === 'INPUT' || button.tagName !== 'LABEL') {\n Button._jQueryInterface.call($__default[\"default\"](button), 'toggle', initialButton.tagName === 'INPUT');\n }\n }\n }).on(EVENT_FOCUS_BLUR_DATA_API, SELECTOR_DATA_TOGGLE_CARROT, function (event) {\n var button = $__default[\"default\"](event.target).closest(SELECTOR_BUTTON)[0];\n $__default[\"default\"](button).toggleClass(CLASS_NAME_FOCUS, /^focus(in)?$/.test(event.type));\n });\n $__default[\"default\"](window).on(EVENT_LOAD_DATA_API$2, function () {\n // ensure correct active class is set to match the controls' actual values/states\n // find all checkboxes/readio buttons inside data-toggle groups\n var buttons = [].slice.call(document.querySelectorAll(SELECTOR_DATA_TOGGLES_BUTTONS));\n\n for (var i = 0, len = buttons.length; i < len; i++) {\n var button = buttons[i];\n var input = button.querySelector(SELECTOR_INPUT);\n\n if (input.checked || input.hasAttribute('checked')) {\n button.classList.add(CLASS_NAME_ACTIVE$3);\n } else {\n button.classList.remove(CLASS_NAME_ACTIVE$3);\n }\n } // find all button toggles\n\n\n buttons = [].slice.call(document.querySelectorAll(SELECTOR_DATA_TOGGLE$4));\n\n for (var _i = 0, _len = buttons.length; _i < _len; _i++) {\n var _button = buttons[_i];\n\n if (_button.getAttribute('aria-pressed') === 'true') {\n _button.classList.add(CLASS_NAME_ACTIVE$3);\n } else {\n _button.classList.remove(CLASS_NAME_ACTIVE$3);\n }\n }\n });\n /**\n * jQuery\n */\n\n $__default[\"default\"].fn[NAME$9] = Button._jQueryInterface;\n $__default[\"default\"].fn[NAME$9].Constructor = Button;\n\n $__default[\"default\"].fn[NAME$9].noConflict = function () {\n $__default[\"default\"].fn[NAME$9] = JQUERY_NO_CONFLICT$9;\n return Button._jQueryInterface;\n };\n\n /**\n * Constants\n */\n\n var NAME$8 = 'carousel';\n var VERSION$8 = '4.6.2';\n var DATA_KEY$8 = 'bs.carousel';\n var EVENT_KEY$8 = \".\" + DATA_KEY$8;\n var DATA_API_KEY$5 = '.data-api';\n var JQUERY_NO_CONFLICT$8 = $__default[\"default\"].fn[NAME$8];\n var ARROW_LEFT_KEYCODE = 37; // KeyboardEvent.which value for left arrow key\n\n var ARROW_RIGHT_KEYCODE = 39; // KeyboardEvent.which value for right arrow key\n\n var TOUCHEVENT_COMPAT_WAIT = 500; // Time for mouse compat events to fire after touch\n\n var SWIPE_THRESHOLD = 40;\n var CLASS_NAME_CAROUSEL = 'carousel';\n var CLASS_NAME_ACTIVE$2 = 'active';\n var CLASS_NAME_SLIDE = 'slide';\n var CLASS_NAME_RIGHT = 'carousel-item-right';\n var CLASS_NAME_LEFT = 'carousel-item-left';\n var CLASS_NAME_NEXT = 'carousel-item-next';\n var CLASS_NAME_PREV = 'carousel-item-prev';\n var CLASS_NAME_POINTER_EVENT = 'pointer-event';\n var DIRECTION_NEXT = 'next';\n var DIRECTION_PREV = 'prev';\n var DIRECTION_LEFT = 'left';\n var DIRECTION_RIGHT = 'right';\n var EVENT_SLIDE = \"slide\" + EVENT_KEY$8;\n var EVENT_SLID = \"slid\" + EVENT_KEY$8;\n var EVENT_KEYDOWN = \"keydown\" + EVENT_KEY$8;\n var EVENT_MOUSEENTER = \"mouseenter\" + EVENT_KEY$8;\n var EVENT_MOUSELEAVE = \"mouseleave\" + EVENT_KEY$8;\n var EVENT_TOUCHSTART = \"touchstart\" + EVENT_KEY$8;\n var EVENT_TOUCHMOVE = \"touchmove\" + EVENT_KEY$8;\n var EVENT_TOUCHEND = \"touchend\" + EVENT_KEY$8;\n var EVENT_POINTERDOWN = \"pointerdown\" + EVENT_KEY$8;\n var EVENT_POINTERUP = \"pointerup\" + EVENT_KEY$8;\n var EVENT_DRAG_START = \"dragstart\" + EVENT_KEY$8;\n var EVENT_LOAD_DATA_API$1 = \"load\" + EVENT_KEY$8 + DATA_API_KEY$5;\n var EVENT_CLICK_DATA_API$4 = \"click\" + EVENT_KEY$8 + DATA_API_KEY$5;\n var SELECTOR_ACTIVE$1 = '.active';\n var SELECTOR_ACTIVE_ITEM = '.active.carousel-item';\n var SELECTOR_ITEM = '.carousel-item';\n var SELECTOR_ITEM_IMG = '.carousel-item img';\n var SELECTOR_NEXT_PREV = '.carousel-item-next, .carousel-item-prev';\n var SELECTOR_INDICATORS = '.carousel-indicators';\n var SELECTOR_DATA_SLIDE = '[data-slide], [data-slide-to]';\n var SELECTOR_DATA_RIDE = '[data-ride=\"carousel\"]';\n var Default$7 = {\n interval: 5000,\n keyboard: true,\n slide: false,\n pause: 'hover',\n wrap: true,\n touch: true\n };\n var DefaultType$7 = {\n interval: '(number|boolean)',\n keyboard: 'boolean',\n slide: '(boolean|string)',\n pause: '(string|boolean)',\n wrap: 'boolean',\n touch: 'boolean'\n };\n var PointerType = {\n TOUCH: 'touch',\n PEN: 'pen'\n };\n /**\n * Class definition\n */\n\n var Carousel = /*#__PURE__*/function () {\n function Carousel(element, config) {\n this._items = null;\n this._interval = null;\n this._activeElement = null;\n this._isPaused = false;\n this._isSliding = false;\n this.touchTimeout = null;\n this.touchStartX = 0;\n this.touchDeltaX = 0;\n this._config = this._getConfig(config);\n this._element = element;\n this._indicatorsElement = this._element.querySelector(SELECTOR_INDICATORS);\n this._touchSupported = 'ontouchstart' in document.documentElement || navigator.maxTouchPoints > 0;\n this._pointerEvent = Boolean(window.PointerEvent || window.MSPointerEvent);\n\n this._addEventListeners();\n } // Getters\n\n\n var _proto = Carousel.prototype;\n\n // Public\n _proto.next = function next() {\n if (!this._isSliding) {\n this._slide(DIRECTION_NEXT);\n }\n };\n\n _proto.nextWhenVisible = function nextWhenVisible() {\n var $element = $__default[\"default\"](this._element); // Don't call next when the page isn't visible\n // or the carousel or its parent isn't visible\n\n if (!document.hidden && $element.is(':visible') && $element.css('visibility') !== 'hidden') {\n this.next();\n }\n };\n\n _proto.prev = function prev() {\n if (!this._isSliding) {\n this._slide(DIRECTION_PREV);\n }\n };\n\n _proto.pause = function pause(event) {\n if (!event) {\n this._isPaused = true;\n }\n\n if (this._element.querySelector(SELECTOR_NEXT_PREV)) {\n Util.triggerTransitionEnd(this._element);\n this.cycle(true);\n }\n\n clearInterval(this._interval);\n this._interval = null;\n };\n\n _proto.cycle = function cycle(event) {\n if (!event) {\n this._isPaused = false;\n }\n\n if (this._interval) {\n clearInterval(this._interval);\n this._interval = null;\n }\n\n if (this._config.interval && !this._isPaused) {\n this._updateInterval();\n\n this._interval = setInterval((document.visibilityState ? this.nextWhenVisible : this.next).bind(this), this._config.interval);\n }\n };\n\n _proto.to = function to(index) {\n var _this = this;\n\n this._activeElement = this._element.querySelector(SELECTOR_ACTIVE_ITEM);\n\n var activeIndex = this._getItemIndex(this._activeElement);\n\n if (index > this._items.length - 1 || index < 0) {\n return;\n }\n\n if (this._isSliding) {\n $__default[\"default\"](this._element).one(EVENT_SLID, function () {\n return _this.to(index);\n });\n return;\n }\n\n if (activeIndex === index) {\n this.pause();\n this.cycle();\n return;\n }\n\n var direction = index > activeIndex ? DIRECTION_NEXT : DIRECTION_PREV;\n\n this._slide(direction, this._items[index]);\n };\n\n _proto.dispose = function dispose() {\n $__default[\"default\"](this._element).off(EVENT_KEY$8);\n $__default[\"default\"].removeData(this._element, DATA_KEY$8);\n this._items = null;\n this._config = null;\n this._element = null;\n this._interval = null;\n this._isPaused = null;\n this._isSliding = null;\n this._activeElement = null;\n this._indicatorsElement = null;\n } // Private\n ;\n\n _proto._getConfig = function _getConfig(config) {\n config = _extends({}, Default$7, config);\n Util.typeCheckConfig(NAME$8, config, DefaultType$7);\n return config;\n };\n\n _proto._handleSwipe = function _handleSwipe() {\n var absDeltax = Math.abs(this.touchDeltaX);\n\n if (absDeltax <= SWIPE_THRESHOLD) {\n return;\n }\n\n var direction = absDeltax / this.touchDeltaX;\n this.touchDeltaX = 0; // swipe left\n\n if (direction > 0) {\n this.prev();\n } // swipe right\n\n\n if (direction < 0) {\n this.next();\n }\n };\n\n _proto._addEventListeners = function _addEventListeners() {\n var _this2 = this;\n\n if (this._config.keyboard) {\n $__default[\"default\"](this._element).on(EVENT_KEYDOWN, function (event) {\n return _this2._keydown(event);\n });\n }\n\n if (this._config.pause === 'hover') {\n $__default[\"default\"](this._element).on(EVENT_MOUSEENTER, function (event) {\n return _this2.pause(event);\n }).on(EVENT_MOUSELEAVE, function (event) {\n return _this2.cycle(event);\n });\n }\n\n if (this._config.touch) {\n this._addTouchEventListeners();\n }\n };\n\n _proto._addTouchEventListeners = function _addTouchEventListeners() {\n var _this3 = this;\n\n if (!this._touchSupported) {\n return;\n }\n\n var start = function start(event) {\n if (_this3._pointerEvent && PointerType[event.originalEvent.pointerType.toUpperCase()]) {\n _this3.touchStartX = event.originalEvent.clientX;\n } else if (!_this3._pointerEvent) {\n _this3.touchStartX = event.originalEvent.touches[0].clientX;\n }\n };\n\n var move = function move(event) {\n // ensure swiping with one touch and not pinching\n _this3.touchDeltaX = event.originalEvent.touches && event.originalEvent.touches.length > 1 ? 0 : event.originalEvent.touches[0].clientX - _this3.touchStartX;\n };\n\n var end = function end(event) {\n if (_this3._pointerEvent && PointerType[event.originalEvent.pointerType.toUpperCase()]) {\n _this3.touchDeltaX = event.originalEvent.clientX - _this3.touchStartX;\n }\n\n _this3._handleSwipe();\n\n if (_this3._config.pause === 'hover') {\n // If it's a touch-enabled device, mouseenter/leave are fired as\n // part of the mouse compatibility events on first tap - the carousel\n // would stop cycling until user tapped out of it;\n // here, we listen for touchend, explicitly pause the carousel\n // (as if it's the second time we tap on it, mouseenter compat event\n // is NOT fired) and after a timeout (to allow for mouse compatibility\n // events to fire) we explicitly restart cycling\n _this3.pause();\n\n if (_this3.touchTimeout) {\n clearTimeout(_this3.touchTimeout);\n }\n\n _this3.touchTimeout = setTimeout(function (event) {\n return _this3.cycle(event);\n }, TOUCHEVENT_COMPAT_WAIT + _this3._config.interval);\n }\n };\n\n $__default[\"default\"](this._element.querySelectorAll(SELECTOR_ITEM_IMG)).on(EVENT_DRAG_START, function (e) {\n return e.preventDefault();\n });\n\n if (this._pointerEvent) {\n $__default[\"default\"](this._element).on(EVENT_POINTERDOWN, function (event) {\n return start(event);\n });\n $__default[\"default\"](this._element).on(EVENT_POINTERUP, function (event) {\n return end(event);\n });\n\n this._element.classList.add(CLASS_NAME_POINTER_EVENT);\n } else {\n $__default[\"default\"](this._element).on(EVENT_TOUCHSTART, function (event) {\n return start(event);\n });\n $__default[\"default\"](this._element).on(EVENT_TOUCHMOVE, function (event) {\n return move(event);\n });\n $__default[\"default\"](this._element).on(EVENT_TOUCHEND, function (event) {\n return end(event);\n });\n }\n };\n\n _proto._keydown = function _keydown(event) {\n if (/input|textarea/i.test(event.target.tagName)) {\n return;\n }\n\n switch (event.which) {\n case ARROW_LEFT_KEYCODE:\n event.preventDefault();\n this.prev();\n break;\n\n case ARROW_RIGHT_KEYCODE:\n event.preventDefault();\n this.next();\n break;\n }\n };\n\n _proto._getItemIndex = function _getItemIndex(element) {\n this._items = element && element.parentNode ? [].slice.call(element.parentNode.querySelectorAll(SELECTOR_ITEM)) : [];\n return this._items.indexOf(element);\n };\n\n _proto._getItemByDirection = function _getItemByDirection(direction, activeElement) {\n var isNextDirection = direction === DIRECTION_NEXT;\n var isPrevDirection = direction === DIRECTION_PREV;\n\n var activeIndex = this._getItemIndex(activeElement);\n\n var lastItemIndex = this._items.length - 1;\n var isGoingToWrap = isPrevDirection && activeIndex === 0 || isNextDirection && activeIndex === lastItemIndex;\n\n if (isGoingToWrap && !this._config.wrap) {\n return activeElement;\n }\n\n var delta = direction === DIRECTION_PREV ? -1 : 1;\n var itemIndex = (activeIndex + delta) % this._items.length;\n return itemIndex === -1 ? this._items[this._items.length - 1] : this._items[itemIndex];\n };\n\n _proto._triggerSlideEvent = function _triggerSlideEvent(relatedTarget, eventDirectionName) {\n var targetIndex = this._getItemIndex(relatedTarget);\n\n var fromIndex = this._getItemIndex(this._element.querySelector(SELECTOR_ACTIVE_ITEM));\n\n var slideEvent = $__default[\"default\"].Event(EVENT_SLIDE, {\n relatedTarget: relatedTarget,\n direction: eventDirectionName,\n from: fromIndex,\n to: targetIndex\n });\n $__default[\"default\"](this._element).trigger(slideEvent);\n return slideEvent;\n };\n\n _proto._setActiveIndicatorElement = function _setActiveIndicatorElement(element) {\n if (this._indicatorsElement) {\n var indicators = [].slice.call(this._indicatorsElement.querySelectorAll(SELECTOR_ACTIVE$1));\n $__default[\"default\"](indicators).removeClass(CLASS_NAME_ACTIVE$2);\n\n var nextIndicator = this._indicatorsElement.children[this._getItemIndex(element)];\n\n if (nextIndicator) {\n $__default[\"default\"](nextIndicator).addClass(CLASS_NAME_ACTIVE$2);\n }\n }\n };\n\n _proto._updateInterval = function _updateInterval() {\n var element = this._activeElement || this._element.querySelector(SELECTOR_ACTIVE_ITEM);\n\n if (!element) {\n return;\n }\n\n var elementInterval = parseInt(element.getAttribute('data-interval'), 10);\n\n if (elementInterval) {\n this._config.defaultInterval = this._config.defaultInterval || this._config.interval;\n this._config.interval = elementInterval;\n } else {\n this._config.interval = this._config.defaultInterval || this._config.interval;\n }\n };\n\n _proto._slide = function _slide(direction, element) {\n var _this4 = this;\n\n var activeElement = this._element.querySelector(SELECTOR_ACTIVE_ITEM);\n\n var activeElementIndex = this._getItemIndex(activeElement);\n\n var nextElement = element || activeElement && this._getItemByDirection(direction, activeElement);\n\n var nextElementIndex = this._getItemIndex(nextElement);\n\n var isCycling = Boolean(this._interval);\n var directionalClassName;\n var orderClassName;\n var eventDirectionName;\n\n if (direction === DIRECTION_NEXT) {\n directionalClassName = CLASS_NAME_LEFT;\n orderClassName = CLASS_NAME_NEXT;\n eventDirectionName = DIRECTION_LEFT;\n } else {\n directionalClassName = CLASS_NAME_RIGHT;\n orderClassName = CLASS_NAME_PREV;\n eventDirectionName = DIRECTION_RIGHT;\n }\n\n if (nextElement && $__default[\"default\"](nextElement).hasClass(CLASS_NAME_ACTIVE$2)) {\n this._isSliding = false;\n return;\n }\n\n var slideEvent = this._triggerSlideEvent(nextElement, eventDirectionName);\n\n if (slideEvent.isDefaultPrevented()) {\n return;\n }\n\n if (!activeElement || !nextElement) {\n // Some weirdness is happening, so we bail\n return;\n }\n\n this._isSliding = true;\n\n if (isCycling) {\n this.pause();\n }\n\n this._setActiveIndicatorElement(nextElement);\n\n this._activeElement = nextElement;\n var slidEvent = $__default[\"default\"].Event(EVENT_SLID, {\n relatedTarget: nextElement,\n direction: eventDirectionName,\n from: activeElementIndex,\n to: nextElementIndex\n });\n\n if ($__default[\"default\"](this._element).hasClass(CLASS_NAME_SLIDE)) {\n $__default[\"default\"](nextElement).addClass(orderClassName);\n Util.reflow(nextElement);\n $__default[\"default\"](activeElement).addClass(directionalClassName);\n $__default[\"default\"](nextElement).addClass(directionalClassName);\n var transitionDuration = Util.getTransitionDurationFromElement(activeElement);\n $__default[\"default\"](activeElement).one(Util.TRANSITION_END, function () {\n $__default[\"default\"](nextElement).removeClass(directionalClassName + \" \" + orderClassName).addClass(CLASS_NAME_ACTIVE$2);\n $__default[\"default\"](activeElement).removeClass(CLASS_NAME_ACTIVE$2 + \" \" + orderClassName + \" \" + directionalClassName);\n _this4._isSliding = false;\n setTimeout(function () {\n return $__default[\"default\"](_this4._element).trigger(slidEvent);\n }, 0);\n }).emulateTransitionEnd(transitionDuration);\n } else {\n $__default[\"default\"](activeElement).removeClass(CLASS_NAME_ACTIVE$2);\n $__default[\"default\"](nextElement).addClass(CLASS_NAME_ACTIVE$2);\n this._isSliding = false;\n $__default[\"default\"](this._element).trigger(slidEvent);\n }\n\n if (isCycling) {\n this.cycle();\n }\n } // Static\n ;\n\n Carousel._jQueryInterface = function _jQueryInterface(config) {\n return this.each(function () {\n var data = $__default[\"default\"](this).data(DATA_KEY$8);\n\n var _config = _extends({}, Default$7, $__default[\"default\"](this).data());\n\n if (typeof config === 'object') {\n _config = _extends({}, _config, config);\n }\n\n var action = typeof config === 'string' ? config : _config.slide;\n\n if (!data) {\n data = new Carousel(this, _config);\n $__default[\"default\"](this).data(DATA_KEY$8, data);\n }\n\n if (typeof config === 'number') {\n data.to(config);\n } else if (typeof action === 'string') {\n if (typeof data[action] === 'undefined') {\n throw new TypeError(\"No method named \\\"\" + action + \"\\\"\");\n }\n\n data[action]();\n } else if (_config.interval && _config.ride) {\n data.pause();\n data.cycle();\n }\n });\n };\n\n Carousel._dataApiClickHandler = function _dataApiClickHandler(event) {\n var selector = Util.getSelectorFromElement(this);\n\n if (!selector) {\n return;\n }\n\n var target = $__default[\"default\"](selector)[0];\n\n if (!target || !$__default[\"default\"](target).hasClass(CLASS_NAME_CAROUSEL)) {\n return;\n }\n\n var config = _extends({}, $__default[\"default\"](target).data(), $__default[\"default\"](this).data());\n\n var slideIndex = this.getAttribute('data-slide-to');\n\n if (slideIndex) {\n config.interval = false;\n }\n\n Carousel._jQueryInterface.call($__default[\"default\"](target), config);\n\n if (slideIndex) {\n $__default[\"default\"](target).data(DATA_KEY$8).to(slideIndex);\n }\n\n event.preventDefault();\n };\n\n _createClass(Carousel, null, [{\n key: \"VERSION\",\n get: function get() {\n return VERSION$8;\n }\n }, {\n key: \"Default\",\n get: function get() {\n return Default$7;\n }\n }]);\n\n return Carousel;\n }();\n /**\n * Data API implementation\n */\n\n\n $__default[\"default\"](document).on(EVENT_CLICK_DATA_API$4, SELECTOR_DATA_SLIDE, Carousel._dataApiClickHandler);\n $__default[\"default\"](window).on(EVENT_LOAD_DATA_API$1, function () {\n var carousels = [].slice.call(document.querySelectorAll(SELECTOR_DATA_RIDE));\n\n for (var i = 0, len = carousels.length; i < len; i++) {\n var $carousel = $__default[\"default\"](carousels[i]);\n\n Carousel._jQueryInterface.call($carousel, $carousel.data());\n }\n });\n /**\n * jQuery\n */\n\n $__default[\"default\"].fn[NAME$8] = Carousel._jQueryInterface;\n $__default[\"default\"].fn[NAME$8].Constructor = Carousel;\n\n $__default[\"default\"].fn[NAME$8].noConflict = function () {\n $__default[\"default\"].fn[NAME$8] = JQUERY_NO_CONFLICT$8;\n return Carousel._jQueryInterface;\n };\n\n /**\n * Constants\n */\n\n var NAME$7 = 'collapse';\n var VERSION$7 = '4.6.2';\n var DATA_KEY$7 = 'bs.collapse';\n var EVENT_KEY$7 = \".\" + DATA_KEY$7;\n var DATA_API_KEY$4 = '.data-api';\n var JQUERY_NO_CONFLICT$7 = $__default[\"default\"].fn[NAME$7];\n var CLASS_NAME_SHOW$6 = 'show';\n var CLASS_NAME_COLLAPSE = 'collapse';\n var CLASS_NAME_COLLAPSING = 'collapsing';\n var CLASS_NAME_COLLAPSED = 'collapsed';\n var DIMENSION_WIDTH = 'width';\n var DIMENSION_HEIGHT = 'height';\n var EVENT_SHOW$4 = \"show\" + EVENT_KEY$7;\n var EVENT_SHOWN$4 = \"shown\" + EVENT_KEY$7;\n var EVENT_HIDE$4 = \"hide\" + EVENT_KEY$7;\n var EVENT_HIDDEN$4 = \"hidden\" + EVENT_KEY$7;\n var EVENT_CLICK_DATA_API$3 = \"click\" + EVENT_KEY$7 + DATA_API_KEY$4;\n var SELECTOR_ACTIVES = '.show, .collapsing';\n var SELECTOR_DATA_TOGGLE$3 = '[data-toggle=\"collapse\"]';\n var Default$6 = {\n toggle: true,\n parent: ''\n };\n var DefaultType$6 = {\n toggle: 'boolean',\n parent: '(string|element)'\n };\n /**\n * Class definition\n */\n\n var Collapse = /*#__PURE__*/function () {\n function Collapse(element, config) {\n this._isTransitioning = false;\n this._element = element;\n this._config = this._getConfig(config);\n this._triggerArray = [].slice.call(document.querySelectorAll(\"[data-toggle=\\\"collapse\\\"][href=\\\"#\" + element.id + \"\\\"],\" + (\"[data-toggle=\\\"collapse\\\"][data-target=\\\"#\" + element.id + \"\\\"]\")));\n var toggleList = [].slice.call(document.querySelectorAll(SELECTOR_DATA_TOGGLE$3));\n\n for (var i = 0, len = toggleList.length; i < len; i++) {\n var elem = toggleList[i];\n var selector = Util.getSelectorFromElement(elem);\n var filterElement = [].slice.call(document.querySelectorAll(selector)).filter(function (foundElem) {\n return foundElem === element;\n });\n\n if (selector !== null && filterElement.length > 0) {\n this._selector = selector;\n\n this._triggerArray.push(elem);\n }\n }\n\n this._parent = this._config.parent ? this._getParent() : null;\n\n if (!this._config.parent) {\n this._addAriaAndCollapsedClass(this._element, this._triggerArray);\n }\n\n if (this._config.toggle) {\n this.toggle();\n }\n } // Getters\n\n\n var _proto = Collapse.prototype;\n\n // Public\n _proto.toggle = function toggle() {\n if ($__default[\"default\"](this._element).hasClass(CLASS_NAME_SHOW$6)) {\n this.hide();\n } else {\n this.show();\n }\n };\n\n _proto.show = function show() {\n var _this = this;\n\n if (this._isTransitioning || $__default[\"default\"](this._element).hasClass(CLASS_NAME_SHOW$6)) {\n return;\n }\n\n var actives;\n var activesData;\n\n if (this._parent) {\n actives = [].slice.call(this._parent.querySelectorAll(SELECTOR_ACTIVES)).filter(function (elem) {\n if (typeof _this._config.parent === 'string') {\n return elem.getAttribute('data-parent') === _this._config.parent;\n }\n\n return elem.classList.contains(CLASS_NAME_COLLAPSE);\n });\n\n if (actives.length === 0) {\n actives = null;\n }\n }\n\n if (actives) {\n activesData = $__default[\"default\"](actives).not(this._selector).data(DATA_KEY$7);\n\n if (activesData && activesData._isTransitioning) {\n return;\n }\n }\n\n var startEvent = $__default[\"default\"].Event(EVENT_SHOW$4);\n $__default[\"default\"](this._element).trigger(startEvent);\n\n if (startEvent.isDefaultPrevented()) {\n return;\n }\n\n if (actives) {\n Collapse._jQueryInterface.call($__default[\"default\"](actives).not(this._selector), 'hide');\n\n if (!activesData) {\n $__default[\"default\"](actives).data(DATA_KEY$7, null);\n }\n }\n\n var dimension = this._getDimension();\n\n $__default[\"default\"](this._element).removeClass(CLASS_NAME_COLLAPSE).addClass(CLASS_NAME_COLLAPSING);\n this._element.style[dimension] = 0;\n\n if (this._triggerArray.length) {\n $__default[\"default\"](this._triggerArray).removeClass(CLASS_NAME_COLLAPSED).attr('aria-expanded', true);\n }\n\n this.setTransitioning(true);\n\n var complete = function complete() {\n $__default[\"default\"](_this._element).removeClass(CLASS_NAME_COLLAPSING).addClass(CLASS_NAME_COLLAPSE + \" \" + CLASS_NAME_SHOW$6);\n _this._element.style[dimension] = '';\n\n _this.setTransitioning(false);\n\n $__default[\"default\"](_this._element).trigger(EVENT_SHOWN$4);\n };\n\n var capitalizedDimension = dimension[0].toUpperCase() + dimension.slice(1);\n var scrollSize = \"scroll\" + capitalizedDimension;\n var transitionDuration = Util.getTransitionDurationFromElement(this._element);\n $__default[\"default\"](this._element).one(Util.TRANSITION_END, complete).emulateTransitionEnd(transitionDuration);\n this._element.style[dimension] = this._element[scrollSize] + \"px\";\n };\n\n _proto.hide = function hide() {\n var _this2 = this;\n\n if (this._isTransitioning || !$__default[\"default\"](this._element).hasClass(CLASS_NAME_SHOW$6)) {\n return;\n }\n\n var startEvent = $__default[\"default\"].Event(EVENT_HIDE$4);\n $__default[\"default\"](this._element).trigger(startEvent);\n\n if (startEvent.isDefaultPrevented()) {\n return;\n }\n\n var dimension = this._getDimension();\n\n this._element.style[dimension] = this._element.getBoundingClientRect()[dimension] + \"px\";\n Util.reflow(this._element);\n $__default[\"default\"](this._element).addClass(CLASS_NAME_COLLAPSING).removeClass(CLASS_NAME_COLLAPSE + \" \" + CLASS_NAME_SHOW$6);\n var triggerArrayLength = this._triggerArray.length;\n\n if (triggerArrayLength > 0) {\n for (var i = 0; i < triggerArrayLength; i++) {\n var trigger = this._triggerArray[i];\n var selector = Util.getSelectorFromElement(trigger);\n\n if (selector !== null) {\n var $elem = $__default[\"default\"]([].slice.call(document.querySelectorAll(selector)));\n\n if (!$elem.hasClass(CLASS_NAME_SHOW$6)) {\n $__default[\"default\"](trigger).addClass(CLASS_NAME_COLLAPSED).attr('aria-expanded', false);\n }\n }\n }\n }\n\n this.setTransitioning(true);\n\n var complete = function complete() {\n _this2.setTransitioning(false);\n\n $__default[\"default\"](_this2._element).removeClass(CLASS_NAME_COLLAPSING).addClass(CLASS_NAME_COLLAPSE).trigger(EVENT_HIDDEN$4);\n };\n\n this._element.style[dimension] = '';\n var transitionDuration = Util.getTransitionDurationFromElement(this._element);\n $__default[\"default\"](this._element).one(Util.TRANSITION_END, complete).emulateTransitionEnd(transitionDuration);\n };\n\n _proto.setTransitioning = function setTransitioning(isTransitioning) {\n this._isTransitioning = isTransitioning;\n };\n\n _proto.dispose = function dispose() {\n $__default[\"default\"].removeData(this._element, DATA_KEY$7);\n this._config = null;\n this._parent = null;\n this._element = null;\n this._triggerArray = null;\n this._isTransitioning = null;\n } // Private\n ;\n\n _proto._getConfig = function _getConfig(config) {\n config = _extends({}, Default$6, config);\n config.toggle = Boolean(config.toggle); // Coerce string values\n\n Util.typeCheckConfig(NAME$7, config, DefaultType$6);\n return config;\n };\n\n _proto._getDimension = function _getDimension() {\n var hasWidth = $__default[\"default\"](this._element).hasClass(DIMENSION_WIDTH);\n return hasWidth ? DIMENSION_WIDTH : DIMENSION_HEIGHT;\n };\n\n _proto._getParent = function _getParent() {\n var _this3 = this;\n\n var parent;\n\n if (Util.isElement(this._config.parent)) {\n parent = this._config.parent; // It's a jQuery object\n\n if (typeof this._config.parent.jquery !== 'undefined') {\n parent = this._config.parent[0];\n }\n } else {\n parent = document.querySelector(this._config.parent);\n }\n\n var selector = \"[data-toggle=\\\"collapse\\\"][data-parent=\\\"\" + this._config.parent + \"\\\"]\";\n var children = [].slice.call(parent.querySelectorAll(selector));\n $__default[\"default\"](children).each(function (i, element) {\n _this3._addAriaAndCollapsedClass(Collapse._getTargetFromElement(element), [element]);\n });\n return parent;\n };\n\n _proto._addAriaAndCollapsedClass = function _addAriaAndCollapsedClass(element, triggerArray) {\n var isOpen = $__default[\"default\"](element).hasClass(CLASS_NAME_SHOW$6);\n\n if (triggerArray.length) {\n $__default[\"default\"](triggerArray).toggleClass(CLASS_NAME_COLLAPSED, !isOpen).attr('aria-expanded', isOpen);\n }\n } // Static\n ;\n\n Collapse._getTargetFromElement = function _getTargetFromElement(element) {\n var selector = Util.getSelectorFromElement(element);\n return selector ? document.querySelector(selector) : null;\n };\n\n Collapse._jQueryInterface = function _jQueryInterface(config) {\n return this.each(function () {\n var $element = $__default[\"default\"](this);\n var data = $element.data(DATA_KEY$7);\n\n var _config = _extends({}, Default$6, $element.data(), typeof config === 'object' && config ? config : {});\n\n if (!data && _config.toggle && typeof config === 'string' && /show|hide/.test(config)) {\n _config.toggle = false;\n }\n\n if (!data) {\n data = new Collapse(this, _config);\n $element.data(DATA_KEY$7, data);\n }\n\n if (typeof config === 'string') {\n if (typeof data[config] === 'undefined') {\n throw new TypeError(\"No method named \\\"\" + config + \"\\\"\");\n }\n\n data[config]();\n }\n });\n };\n\n _createClass(Collapse, null, [{\n key: \"VERSION\",\n get: function get() {\n return VERSION$7;\n }\n }, {\n key: \"Default\",\n get: function get() {\n return Default$6;\n }\n }]);\n\n return Collapse;\n }();\n /**\n * Data API implementation\n */\n\n\n $__default[\"default\"](document).on(EVENT_CLICK_DATA_API$3, SELECTOR_DATA_TOGGLE$3, function (event) {\n // preventDefault only for elements (which change the URL) not inside the collapsible element\n if (event.currentTarget.tagName === 'A') {\n event.preventDefault();\n }\n\n var $trigger = $__default[\"default\"](this);\n var selector = Util.getSelectorFromElement(this);\n var selectors = [].slice.call(document.querySelectorAll(selector));\n $__default[\"default\"](selectors).each(function () {\n var $target = $__default[\"default\"](this);\n var data = $target.data(DATA_KEY$7);\n var config = data ? 'toggle' : $trigger.data();\n\n Collapse._jQueryInterface.call($target, config);\n });\n });\n /**\n * jQuery\n */\n\n $__default[\"default\"].fn[NAME$7] = Collapse._jQueryInterface;\n $__default[\"default\"].fn[NAME$7].Constructor = Collapse;\n\n $__default[\"default\"].fn[NAME$7].noConflict = function () {\n $__default[\"default\"].fn[NAME$7] = JQUERY_NO_CONFLICT$7;\n return Collapse._jQueryInterface;\n };\n\n /**\n * Constants\n */\n\n var NAME$6 = 'dropdown';\n var VERSION$6 = '4.6.2';\n var DATA_KEY$6 = 'bs.dropdown';\n var EVENT_KEY$6 = \".\" + DATA_KEY$6;\n var DATA_API_KEY$3 = '.data-api';\n var JQUERY_NO_CONFLICT$6 = $__default[\"default\"].fn[NAME$6];\n var ESCAPE_KEYCODE$1 = 27; // KeyboardEvent.which value for Escape (Esc) key\n\n var SPACE_KEYCODE = 32; // KeyboardEvent.which value for space key\n\n var TAB_KEYCODE = 9; // KeyboardEvent.which value for tab key\n\n var ARROW_UP_KEYCODE = 38; // KeyboardEvent.which value for up arrow key\n\n var ARROW_DOWN_KEYCODE = 40; // KeyboardEvent.which value for down arrow key\n\n var RIGHT_MOUSE_BUTTON_WHICH = 3; // MouseEvent.which value for the right button (assuming a right-handed mouse)\n\n var REGEXP_KEYDOWN = new RegExp(ARROW_UP_KEYCODE + \"|\" + ARROW_DOWN_KEYCODE + \"|\" + ESCAPE_KEYCODE$1);\n var CLASS_NAME_DISABLED$1 = 'disabled';\n var CLASS_NAME_SHOW$5 = 'show';\n var CLASS_NAME_DROPUP = 'dropup';\n var CLASS_NAME_DROPRIGHT = 'dropright';\n var CLASS_NAME_DROPLEFT = 'dropleft';\n var CLASS_NAME_MENURIGHT = 'dropdown-menu-right';\n var CLASS_NAME_POSITION_STATIC = 'position-static';\n var EVENT_HIDE$3 = \"hide\" + EVENT_KEY$6;\n var EVENT_HIDDEN$3 = \"hidden\" + EVENT_KEY$6;\n var EVENT_SHOW$3 = \"show\" + EVENT_KEY$6;\n var EVENT_SHOWN$3 = \"shown\" + EVENT_KEY$6;\n var EVENT_CLICK = \"click\" + EVENT_KEY$6;\n var EVENT_CLICK_DATA_API$2 = \"click\" + EVENT_KEY$6 + DATA_API_KEY$3;\n var EVENT_KEYDOWN_DATA_API = \"keydown\" + EVENT_KEY$6 + DATA_API_KEY$3;\n var EVENT_KEYUP_DATA_API = \"keyup\" + EVENT_KEY$6 + DATA_API_KEY$3;\n var SELECTOR_DATA_TOGGLE$2 = '[data-toggle=\"dropdown\"]';\n var SELECTOR_FORM_CHILD = '.dropdown form';\n var SELECTOR_MENU = '.dropdown-menu';\n var SELECTOR_NAVBAR_NAV = '.navbar-nav';\n var SELECTOR_VISIBLE_ITEMS = '.dropdown-menu .dropdown-item:not(.disabled):not(:disabled)';\n var PLACEMENT_TOP = 'top-start';\n var PLACEMENT_TOPEND = 'top-end';\n var PLACEMENT_BOTTOM = 'bottom-start';\n var PLACEMENT_BOTTOMEND = 'bottom-end';\n var PLACEMENT_RIGHT = 'right-start';\n var PLACEMENT_LEFT = 'left-start';\n var Default$5 = {\n offset: 0,\n flip: true,\n boundary: 'scrollParent',\n reference: 'toggle',\n display: 'dynamic',\n popperConfig: null\n };\n var DefaultType$5 = {\n offset: '(number|string|function)',\n flip: 'boolean',\n boundary: '(string|element)',\n reference: '(string|element)',\n display: 'string',\n popperConfig: '(null|object)'\n };\n /**\n * Class definition\n */\n\n var Dropdown = /*#__PURE__*/function () {\n function Dropdown(element, config) {\n this._element = element;\n this._popper = null;\n this._config = this._getConfig(config);\n this._menu = this._getMenuElement();\n this._inNavbar = this._detectNavbar();\n\n this._addEventListeners();\n } // Getters\n\n\n var _proto = Dropdown.prototype;\n\n // Public\n _proto.toggle = function toggle() {\n if (this._element.disabled || $__default[\"default\"](this._element).hasClass(CLASS_NAME_DISABLED$1)) {\n return;\n }\n\n var isActive = $__default[\"default\"](this._menu).hasClass(CLASS_NAME_SHOW$5);\n\n Dropdown._clearMenus();\n\n if (isActive) {\n return;\n }\n\n this.show(true);\n };\n\n _proto.show = function show(usePopper) {\n if (usePopper === void 0) {\n usePopper = false;\n }\n\n if (this._element.disabled || $__default[\"default\"](this._element).hasClass(CLASS_NAME_DISABLED$1) || $__default[\"default\"](this._menu).hasClass(CLASS_NAME_SHOW$5)) {\n return;\n }\n\n var relatedTarget = {\n relatedTarget: this._element\n };\n var showEvent = $__default[\"default\"].Event(EVENT_SHOW$3, relatedTarget);\n\n var parent = Dropdown._getParentFromElement(this._element);\n\n $__default[\"default\"](parent).trigger(showEvent);\n\n if (showEvent.isDefaultPrevented()) {\n return;\n } // Totally disable Popper for Dropdowns in Navbar\n\n\n if (!this._inNavbar && usePopper) {\n // Check for Popper dependency\n if (typeof Popper__default[\"default\"] === 'undefined') {\n throw new TypeError('Bootstrap\\'s dropdowns require Popper (https://popper.js.org)');\n }\n\n var referenceElement = this._element;\n\n if (this._config.reference === 'parent') {\n referenceElement = parent;\n } else if (Util.isElement(this._config.reference)) {\n referenceElement = this._config.reference; // Check if it's jQuery element\n\n if (typeof this._config.reference.jquery !== 'undefined') {\n referenceElement = this._config.reference[0];\n }\n } // If boundary is not `scrollParent`, then set position to `static`\n // to allow the menu to \"escape\" the scroll parent's boundaries\n // https://github.com/twbs/bootstrap/issues/24251\n\n\n if (this._config.boundary !== 'scrollParent') {\n $__default[\"default\"](parent).addClass(CLASS_NAME_POSITION_STATIC);\n }\n\n this._popper = new Popper__default[\"default\"](referenceElement, this._menu, this._getPopperConfig());\n } // If this is a touch-enabled device we add extra\n // empty mouseover listeners to the body's immediate children;\n // only needed because of broken event delegation on iOS\n // https://www.quirksmode.org/blog/archives/2014/02/mouse_event_bub.html\n\n\n if ('ontouchstart' in document.documentElement && $__default[\"default\"](parent).closest(SELECTOR_NAVBAR_NAV).length === 0) {\n $__default[\"default\"](document.body).children().on('mouseover', null, $__default[\"default\"].noop);\n }\n\n this._element.focus();\n\n this._element.setAttribute('aria-expanded', true);\n\n $__default[\"default\"](this._menu).toggleClass(CLASS_NAME_SHOW$5);\n $__default[\"default\"](parent).toggleClass(CLASS_NAME_SHOW$5).trigger($__default[\"default\"].Event(EVENT_SHOWN$3, relatedTarget));\n };\n\n _proto.hide = function hide() {\n if (this._element.disabled || $__default[\"default\"](this._element).hasClass(CLASS_NAME_DISABLED$1) || !$__default[\"default\"](this._menu).hasClass(CLASS_NAME_SHOW$5)) {\n return;\n }\n\n var relatedTarget = {\n relatedTarget: this._element\n };\n var hideEvent = $__default[\"default\"].Event(EVENT_HIDE$3, relatedTarget);\n\n var parent = Dropdown._getParentFromElement(this._element);\n\n $__default[\"default\"](parent).trigger(hideEvent);\n\n if (hideEvent.isDefaultPrevented()) {\n return;\n }\n\n if (this._popper) {\n this._popper.destroy();\n }\n\n $__default[\"default\"](this._menu).toggleClass(CLASS_NAME_SHOW$5);\n $__default[\"default\"](parent).toggleClass(CLASS_NAME_SHOW$5).trigger($__default[\"default\"].Event(EVENT_HIDDEN$3, relatedTarget));\n };\n\n _proto.dispose = function dispose() {\n $__default[\"default\"].removeData(this._element, DATA_KEY$6);\n $__default[\"default\"](this._element).off(EVENT_KEY$6);\n this._element = null;\n this._menu = null;\n\n if (this._popper !== null) {\n this._popper.destroy();\n\n this._popper = null;\n }\n };\n\n _proto.update = function update() {\n this._inNavbar = this._detectNavbar();\n\n if (this._popper !== null) {\n this._popper.scheduleUpdate();\n }\n } // Private\n ;\n\n _proto._addEventListeners = function _addEventListeners() {\n var _this = this;\n\n $__default[\"default\"](this._element).on(EVENT_CLICK, function (event) {\n event.preventDefault();\n event.stopPropagation();\n\n _this.toggle();\n });\n };\n\n _proto._getConfig = function _getConfig(config) {\n config = _extends({}, this.constructor.Default, $__default[\"default\"](this._element).data(), config);\n Util.typeCheckConfig(NAME$6, config, this.constructor.DefaultType);\n return config;\n };\n\n _proto._getMenuElement = function _getMenuElement() {\n if (!this._menu) {\n var parent = Dropdown._getParentFromElement(this._element);\n\n if (parent) {\n this._menu = parent.querySelector(SELECTOR_MENU);\n }\n }\n\n return this._menu;\n };\n\n _proto._getPlacement = function _getPlacement() {\n var $parentDropdown = $__default[\"default\"](this._element.parentNode);\n var placement = PLACEMENT_BOTTOM; // Handle dropup\n\n if ($parentDropdown.hasClass(CLASS_NAME_DROPUP)) {\n placement = $__default[\"default\"](this._menu).hasClass(CLASS_NAME_MENURIGHT) ? PLACEMENT_TOPEND : PLACEMENT_TOP;\n } else if ($parentDropdown.hasClass(CLASS_NAME_DROPRIGHT)) {\n placement = PLACEMENT_RIGHT;\n } else if ($parentDropdown.hasClass(CLASS_NAME_DROPLEFT)) {\n placement = PLACEMENT_LEFT;\n } else if ($__default[\"default\"](this._menu).hasClass(CLASS_NAME_MENURIGHT)) {\n placement = PLACEMENT_BOTTOMEND;\n }\n\n return placement;\n };\n\n _proto._detectNavbar = function _detectNavbar() {\n return $__default[\"default\"](this._element).closest('.navbar').length > 0;\n };\n\n _proto._getOffset = function _getOffset() {\n var _this2 = this;\n\n var offset = {};\n\n if (typeof this._config.offset === 'function') {\n offset.fn = function (data) {\n data.offsets = _extends({}, data.offsets, _this2._config.offset(data.offsets, _this2._element));\n return data;\n };\n } else {\n offset.offset = this._config.offset;\n }\n\n return offset;\n };\n\n _proto._getPopperConfig = function _getPopperConfig() {\n var popperConfig = {\n placement: this._getPlacement(),\n modifiers: {\n offset: this._getOffset(),\n flip: {\n enabled: this._config.flip\n },\n preventOverflow: {\n boundariesElement: this._config.boundary\n }\n }\n }; // Disable Popper if we have a static display\n\n if (this._config.display === 'static') {\n popperConfig.modifiers.applyStyle = {\n enabled: false\n };\n }\n\n return _extends({}, popperConfig, this._config.popperConfig);\n } // Static\n ;\n\n Dropdown._jQueryInterface = function _jQueryInterface(config) {\n return this.each(function () {\n var data = $__default[\"default\"](this).data(DATA_KEY$6);\n\n var _config = typeof config === 'object' ? config : null;\n\n if (!data) {\n data = new Dropdown(this, _config);\n $__default[\"default\"](this).data(DATA_KEY$6, data);\n }\n\n if (typeof config === 'string') {\n if (typeof data[config] === 'undefined') {\n throw new TypeError(\"No method named \\\"\" + config + \"\\\"\");\n }\n\n data[config]();\n }\n });\n };\n\n Dropdown._clearMenus = function _clearMenus(event) {\n if (event && (event.which === RIGHT_MOUSE_BUTTON_WHICH || event.type === 'keyup' && event.which !== TAB_KEYCODE)) {\n return;\n }\n\n var toggles = [].slice.call(document.querySelectorAll(SELECTOR_DATA_TOGGLE$2));\n\n for (var i = 0, len = toggles.length; i < len; i++) {\n var parent = Dropdown._getParentFromElement(toggles[i]);\n\n var context = $__default[\"default\"](toggles[i]).data(DATA_KEY$6);\n var relatedTarget = {\n relatedTarget: toggles[i]\n };\n\n if (event && event.type === 'click') {\n relatedTarget.clickEvent = event;\n }\n\n if (!context) {\n continue;\n }\n\n var dropdownMenu = context._menu;\n\n if (!$__default[\"default\"](parent).hasClass(CLASS_NAME_SHOW$5)) {\n continue;\n }\n\n if (event && (event.type === 'click' && /input|textarea/i.test(event.target.tagName) || event.type === 'keyup' && event.which === TAB_KEYCODE) && $__default[\"default\"].contains(parent, event.target)) {\n continue;\n }\n\n var hideEvent = $__default[\"default\"].Event(EVENT_HIDE$3, relatedTarget);\n $__default[\"default\"](parent).trigger(hideEvent);\n\n if (hideEvent.isDefaultPrevented()) {\n continue;\n } // If this is a touch-enabled device we remove the extra\n // empty mouseover listeners we added for iOS support\n\n\n if ('ontouchstart' in document.documentElement) {\n $__default[\"default\"](document.body).children().off('mouseover', null, $__default[\"default\"].noop);\n }\n\n toggles[i].setAttribute('aria-expanded', 'false');\n\n if (context._popper) {\n context._popper.destroy();\n }\n\n $__default[\"default\"](dropdownMenu).removeClass(CLASS_NAME_SHOW$5);\n $__default[\"default\"](parent).removeClass(CLASS_NAME_SHOW$5).trigger($__default[\"default\"].Event(EVENT_HIDDEN$3, relatedTarget));\n }\n };\n\n Dropdown._getParentFromElement = function _getParentFromElement(element) {\n var parent;\n var selector = Util.getSelectorFromElement(element);\n\n if (selector) {\n parent = document.querySelector(selector);\n }\n\n return parent || element.parentNode;\n } // eslint-disable-next-line complexity\n ;\n\n Dropdown._dataApiKeydownHandler = function _dataApiKeydownHandler(event) {\n // If not input/textarea:\n // - And not a key in REGEXP_KEYDOWN => not a dropdown command\n // If input/textarea:\n // - If space key => not a dropdown command\n // - If key is other than escape\n // - If key is not up or down => not a dropdown command\n // - If trigger inside the menu => not a dropdown command\n if (/input|textarea/i.test(event.target.tagName) ? event.which === SPACE_KEYCODE || event.which !== ESCAPE_KEYCODE$1 && (event.which !== ARROW_DOWN_KEYCODE && event.which !== ARROW_UP_KEYCODE || $__default[\"default\"](event.target).closest(SELECTOR_MENU).length) : !REGEXP_KEYDOWN.test(event.which)) {\n return;\n }\n\n if (this.disabled || $__default[\"default\"](this).hasClass(CLASS_NAME_DISABLED$1)) {\n return;\n }\n\n var parent = Dropdown._getParentFromElement(this);\n\n var isActive = $__default[\"default\"](parent).hasClass(CLASS_NAME_SHOW$5);\n\n if (!isActive && event.which === ESCAPE_KEYCODE$1) {\n return;\n }\n\n event.preventDefault();\n event.stopPropagation();\n\n if (!isActive || event.which === ESCAPE_KEYCODE$1 || event.which === SPACE_KEYCODE) {\n if (event.which === ESCAPE_KEYCODE$1) {\n $__default[\"default\"](parent.querySelector(SELECTOR_DATA_TOGGLE$2)).trigger('focus');\n }\n\n $__default[\"default\"](this).trigger('click');\n return;\n }\n\n var items = [].slice.call(parent.querySelectorAll(SELECTOR_VISIBLE_ITEMS)).filter(function (item) {\n return $__default[\"default\"](item).is(':visible');\n });\n\n if (items.length === 0) {\n return;\n }\n\n var index = items.indexOf(event.target);\n\n if (event.which === ARROW_UP_KEYCODE && index > 0) {\n // Up\n index--;\n }\n\n if (event.which === ARROW_DOWN_KEYCODE && index < items.length - 1) {\n // Down\n index++;\n }\n\n if (index < 0) {\n index = 0;\n }\n\n items[index].focus();\n };\n\n _createClass(Dropdown, null, [{\n key: \"VERSION\",\n get: function get() {\n return VERSION$6;\n }\n }, {\n key: \"Default\",\n get: function get() {\n return Default$5;\n }\n }, {\n key: \"DefaultType\",\n get: function get() {\n return DefaultType$5;\n }\n }]);\n\n return Dropdown;\n }();\n /**\n * Data API implementation\n */\n\n\n $__default[\"default\"](document).on(EVENT_KEYDOWN_DATA_API, SELECTOR_DATA_TOGGLE$2, Dropdown._dataApiKeydownHandler).on(EVENT_KEYDOWN_DATA_API, SELECTOR_MENU, Dropdown._dataApiKeydownHandler).on(EVENT_CLICK_DATA_API$2 + \" \" + EVENT_KEYUP_DATA_API, Dropdown._clearMenus).on(EVENT_CLICK_DATA_API$2, SELECTOR_DATA_TOGGLE$2, function (event) {\n event.preventDefault();\n event.stopPropagation();\n\n Dropdown._jQueryInterface.call($__default[\"default\"](this), 'toggle');\n }).on(EVENT_CLICK_DATA_API$2, SELECTOR_FORM_CHILD, function (e) {\n e.stopPropagation();\n });\n /**\n * jQuery\n */\n\n $__default[\"default\"].fn[NAME$6] = Dropdown._jQueryInterface;\n $__default[\"default\"].fn[NAME$6].Constructor = Dropdown;\n\n $__default[\"default\"].fn[NAME$6].noConflict = function () {\n $__default[\"default\"].fn[NAME$6] = JQUERY_NO_CONFLICT$6;\n return Dropdown._jQueryInterface;\n };\n\n /**\n * Constants\n */\n\n var NAME$5 = 'modal';\n var VERSION$5 = '4.6.2';\n var DATA_KEY$5 = 'bs.modal';\n var EVENT_KEY$5 = \".\" + DATA_KEY$5;\n var DATA_API_KEY$2 = '.data-api';\n var JQUERY_NO_CONFLICT$5 = $__default[\"default\"].fn[NAME$5];\n var ESCAPE_KEYCODE = 27; // KeyboardEvent.which value for Escape (Esc) key\n\n var CLASS_NAME_SCROLLABLE = 'modal-dialog-scrollable';\n var CLASS_NAME_SCROLLBAR_MEASURER = 'modal-scrollbar-measure';\n var CLASS_NAME_BACKDROP = 'modal-backdrop';\n var CLASS_NAME_OPEN = 'modal-open';\n var CLASS_NAME_FADE$4 = 'fade';\n var CLASS_NAME_SHOW$4 = 'show';\n var CLASS_NAME_STATIC = 'modal-static';\n var EVENT_HIDE$2 = \"hide\" + EVENT_KEY$5;\n var EVENT_HIDE_PREVENTED = \"hidePrevented\" + EVENT_KEY$5;\n var EVENT_HIDDEN$2 = \"hidden\" + EVENT_KEY$5;\n var EVENT_SHOW$2 = \"show\" + EVENT_KEY$5;\n var EVENT_SHOWN$2 = \"shown\" + EVENT_KEY$5;\n var EVENT_FOCUSIN = \"focusin\" + EVENT_KEY$5;\n var EVENT_RESIZE = \"resize\" + EVENT_KEY$5;\n var EVENT_CLICK_DISMISS$1 = \"click.dismiss\" + EVENT_KEY$5;\n var EVENT_KEYDOWN_DISMISS = \"keydown.dismiss\" + EVENT_KEY$5;\n var EVENT_MOUSEUP_DISMISS = \"mouseup.dismiss\" + EVENT_KEY$5;\n var EVENT_MOUSEDOWN_DISMISS = \"mousedown.dismiss\" + EVENT_KEY$5;\n var EVENT_CLICK_DATA_API$1 = \"click\" + EVENT_KEY$5 + DATA_API_KEY$2;\n var SELECTOR_DIALOG = '.modal-dialog';\n var SELECTOR_MODAL_BODY = '.modal-body';\n var SELECTOR_DATA_TOGGLE$1 = '[data-toggle=\"modal\"]';\n var SELECTOR_DATA_DISMISS$1 = '[data-dismiss=\"modal\"]';\n var SELECTOR_FIXED_CONTENT = '.fixed-top, .fixed-bottom, .is-fixed, .sticky-top';\n var SELECTOR_STICKY_CONTENT = '.sticky-top';\n var Default$4 = {\n backdrop: true,\n keyboard: true,\n focus: true,\n show: true\n };\n var DefaultType$4 = {\n backdrop: '(boolean|string)',\n keyboard: 'boolean',\n focus: 'boolean',\n show: 'boolean'\n };\n /**\n * Class definition\n */\n\n var Modal = /*#__PURE__*/function () {\n function Modal(element, config) {\n this._config = this._getConfig(config);\n this._element = element;\n this._dialog = element.querySelector(SELECTOR_DIALOG);\n this._backdrop = null;\n this._isShown = false;\n this._isBodyOverflowing = false;\n this._ignoreBackdropClick = false;\n this._isTransitioning = false;\n this._scrollbarWidth = 0;\n } // Getters\n\n\n var _proto = Modal.prototype;\n\n // Public\n _proto.toggle = function toggle(relatedTarget) {\n return this._isShown ? this.hide() : this.show(relatedTarget);\n };\n\n _proto.show = function show(relatedTarget) {\n var _this = this;\n\n if (this._isShown || this._isTransitioning) {\n return;\n }\n\n var showEvent = $__default[\"default\"].Event(EVENT_SHOW$2, {\n relatedTarget: relatedTarget\n });\n $__default[\"default\"](this._element).trigger(showEvent);\n\n if (showEvent.isDefaultPrevented()) {\n return;\n }\n\n this._isShown = true;\n\n if ($__default[\"default\"](this._element).hasClass(CLASS_NAME_FADE$4)) {\n this._isTransitioning = true;\n }\n\n this._checkScrollbar();\n\n this._setScrollbar();\n\n this._adjustDialog();\n\n this._setEscapeEvent();\n\n this._setResizeEvent();\n\n $__default[\"default\"](this._element).on(EVENT_CLICK_DISMISS$1, SELECTOR_DATA_DISMISS$1, function (event) {\n return _this.hide(event);\n });\n $__default[\"default\"](this._dialog).on(EVENT_MOUSEDOWN_DISMISS, function () {\n $__default[\"default\"](_this._element).one(EVENT_MOUSEUP_DISMISS, function (event) {\n if ($__default[\"default\"](event.target).is(_this._element)) {\n _this._ignoreBackdropClick = true;\n }\n });\n });\n\n this._showBackdrop(function () {\n return _this._showElement(relatedTarget);\n });\n };\n\n _proto.hide = function hide(event) {\n var _this2 = this;\n\n if (event) {\n event.preventDefault();\n }\n\n if (!this._isShown || this._isTransitioning) {\n return;\n }\n\n var hideEvent = $__default[\"default\"].Event(EVENT_HIDE$2);\n $__default[\"default\"](this._element).trigger(hideEvent);\n\n if (!this._isShown || hideEvent.isDefaultPrevented()) {\n return;\n }\n\n this._isShown = false;\n var transition = $__default[\"default\"](this._element).hasClass(CLASS_NAME_FADE$4);\n\n if (transition) {\n this._isTransitioning = true;\n }\n\n this._setEscapeEvent();\n\n this._setResizeEvent();\n\n $__default[\"default\"](document).off(EVENT_FOCUSIN);\n $__default[\"default\"](this._element).removeClass(CLASS_NAME_SHOW$4);\n $__default[\"default\"](this._element).off(EVENT_CLICK_DISMISS$1);\n $__default[\"default\"](this._dialog).off(EVENT_MOUSEDOWN_DISMISS);\n\n if (transition) {\n var transitionDuration = Util.getTransitionDurationFromElement(this._element);\n $__default[\"default\"](this._element).one(Util.TRANSITION_END, function (event) {\n return _this2._hideModal(event);\n }).emulateTransitionEnd(transitionDuration);\n } else {\n this._hideModal();\n }\n };\n\n _proto.dispose = function dispose() {\n [window, this._element, this._dialog].forEach(function (htmlElement) {\n return $__default[\"default\"](htmlElement).off(EVENT_KEY$5);\n });\n /**\n * `document` has 2 events `EVENT_FOCUSIN` and `EVENT_CLICK_DATA_API`\n * Do not move `document` in `htmlElements` array\n * It will remove `EVENT_CLICK_DATA_API` event that should remain\n */\n\n $__default[\"default\"](document).off(EVENT_FOCUSIN);\n $__default[\"default\"].removeData(this._element, DATA_KEY$5);\n this._config = null;\n this._element = null;\n this._dialog = null;\n this._backdrop = null;\n this._isShown = null;\n this._isBodyOverflowing = null;\n this._ignoreBackdropClick = null;\n this._isTransitioning = null;\n this._scrollbarWidth = null;\n };\n\n _proto.handleUpdate = function handleUpdate() {\n this._adjustDialog();\n } // Private\n ;\n\n _proto._getConfig = function _getConfig(config) {\n config = _extends({}, Default$4, config);\n Util.typeCheckConfig(NAME$5, config, DefaultType$4);\n return config;\n };\n\n _proto._triggerBackdropTransition = function _triggerBackdropTransition() {\n var _this3 = this;\n\n var hideEventPrevented = $__default[\"default\"].Event(EVENT_HIDE_PREVENTED);\n $__default[\"default\"](this._element).trigger(hideEventPrevented);\n\n if (hideEventPrevented.isDefaultPrevented()) {\n return;\n }\n\n var isModalOverflowing = this._element.scrollHeight > document.documentElement.clientHeight;\n\n if (!isModalOverflowing) {\n this._element.style.overflowY = 'hidden';\n }\n\n this._element.classList.add(CLASS_NAME_STATIC);\n\n var modalTransitionDuration = Util.getTransitionDurationFromElement(this._dialog);\n $__default[\"default\"](this._element).off(Util.TRANSITION_END);\n $__default[\"default\"](this._element).one(Util.TRANSITION_END, function () {\n _this3._element.classList.remove(CLASS_NAME_STATIC);\n\n if (!isModalOverflowing) {\n $__default[\"default\"](_this3._element).one(Util.TRANSITION_END, function () {\n _this3._element.style.overflowY = '';\n }).emulateTransitionEnd(_this3._element, modalTransitionDuration);\n }\n }).emulateTransitionEnd(modalTransitionDuration);\n\n this._element.focus();\n };\n\n _proto._showElement = function _showElement(relatedTarget) {\n var _this4 = this;\n\n var transition = $__default[\"default\"](this._element).hasClass(CLASS_NAME_FADE$4);\n var modalBody = this._dialog ? this._dialog.querySelector(SELECTOR_MODAL_BODY) : null;\n\n if (!this._element.parentNode || this._element.parentNode.nodeType !== Node.ELEMENT_NODE) {\n // Don't move modal's DOM position\n document.body.appendChild(this._element);\n }\n\n this._element.style.display = 'block';\n\n this._element.removeAttribute('aria-hidden');\n\n this._element.setAttribute('aria-modal', true);\n\n this._element.setAttribute('role', 'dialog');\n\n if ($__default[\"default\"](this._dialog).hasClass(CLASS_NAME_SCROLLABLE) && modalBody) {\n modalBody.scrollTop = 0;\n } else {\n this._element.scrollTop = 0;\n }\n\n if (transition) {\n Util.reflow(this._element);\n }\n\n $__default[\"default\"](this._element).addClass(CLASS_NAME_SHOW$4);\n\n if (this._config.focus) {\n this._enforceFocus();\n }\n\n var shownEvent = $__default[\"default\"].Event(EVENT_SHOWN$2, {\n relatedTarget: relatedTarget\n });\n\n var transitionComplete = function transitionComplete() {\n if (_this4._config.focus) {\n _this4._element.focus();\n }\n\n _this4._isTransitioning = false;\n $__default[\"default\"](_this4._element).trigger(shownEvent);\n };\n\n if (transition) {\n var transitionDuration = Util.getTransitionDurationFromElement(this._dialog);\n $__default[\"default\"](this._dialog).one(Util.TRANSITION_END, transitionComplete).emulateTransitionEnd(transitionDuration);\n } else {\n transitionComplete();\n }\n };\n\n _proto._enforceFocus = function _enforceFocus() {\n var _this5 = this;\n\n $__default[\"default\"](document).off(EVENT_FOCUSIN) // Guard against infinite focus loop\n .on(EVENT_FOCUSIN, function (event) {\n if (document !== event.target && _this5._element !== event.target && $__default[\"default\"](_this5._element).has(event.target).length === 0) {\n _this5._element.focus();\n }\n });\n };\n\n _proto._setEscapeEvent = function _setEscapeEvent() {\n var _this6 = this;\n\n if (this._isShown) {\n $__default[\"default\"](this._element).on(EVENT_KEYDOWN_DISMISS, function (event) {\n if (_this6._config.keyboard && event.which === ESCAPE_KEYCODE) {\n event.preventDefault();\n\n _this6.hide();\n } else if (!_this6._config.keyboard && event.which === ESCAPE_KEYCODE) {\n _this6._triggerBackdropTransition();\n }\n });\n } else if (!this._isShown) {\n $__default[\"default\"](this._element).off(EVENT_KEYDOWN_DISMISS);\n }\n };\n\n _proto._setResizeEvent = function _setResizeEvent() {\n var _this7 = this;\n\n if (this._isShown) {\n $__default[\"default\"](window).on(EVENT_RESIZE, function (event) {\n return _this7.handleUpdate(event);\n });\n } else {\n $__default[\"default\"](window).off(EVENT_RESIZE);\n }\n };\n\n _proto._hideModal = function _hideModal() {\n var _this8 = this;\n\n this._element.style.display = 'none';\n\n this._element.setAttribute('aria-hidden', true);\n\n this._element.removeAttribute('aria-modal');\n\n this._element.removeAttribute('role');\n\n this._isTransitioning = false;\n\n this._showBackdrop(function () {\n $__default[\"default\"](document.body).removeClass(CLASS_NAME_OPEN);\n\n _this8._resetAdjustments();\n\n _this8._resetScrollbar();\n\n $__default[\"default\"](_this8._element).trigger(EVENT_HIDDEN$2);\n });\n };\n\n _proto._removeBackdrop = function _removeBackdrop() {\n if (this._backdrop) {\n $__default[\"default\"](this._backdrop).remove();\n this._backdrop = null;\n }\n };\n\n _proto._showBackdrop = function _showBackdrop(callback) {\n var _this9 = this;\n\n var animate = $__default[\"default\"](this._element).hasClass(CLASS_NAME_FADE$4) ? CLASS_NAME_FADE$4 : '';\n\n if (this._isShown && this._config.backdrop) {\n this._backdrop = document.createElement('div');\n this._backdrop.className = CLASS_NAME_BACKDROP;\n\n if (animate) {\n this._backdrop.classList.add(animate);\n }\n\n $__default[\"default\"](this._backdrop).appendTo(document.body);\n $__default[\"default\"](this._element).on(EVENT_CLICK_DISMISS$1, function (event) {\n if (_this9._ignoreBackdropClick) {\n _this9._ignoreBackdropClick = false;\n return;\n }\n\n if (event.target !== event.currentTarget) {\n return;\n }\n\n if (_this9._config.backdrop === 'static') {\n _this9._triggerBackdropTransition();\n } else {\n _this9.hide();\n }\n });\n\n if (animate) {\n Util.reflow(this._backdrop);\n }\n\n $__default[\"default\"](this._backdrop).addClass(CLASS_NAME_SHOW$4);\n\n if (!callback) {\n return;\n }\n\n if (!animate) {\n callback();\n return;\n }\n\n var backdropTransitionDuration = Util.getTransitionDurationFromElement(this._backdrop);\n $__default[\"default\"](this._backdrop).one(Util.TRANSITION_END, callback).emulateTransitionEnd(backdropTransitionDuration);\n } else if (!this._isShown && this._backdrop) {\n $__default[\"default\"](this._backdrop).removeClass(CLASS_NAME_SHOW$4);\n\n var callbackRemove = function callbackRemove() {\n _this9._removeBackdrop();\n\n if (callback) {\n callback();\n }\n };\n\n if ($__default[\"default\"](this._element).hasClass(CLASS_NAME_FADE$4)) {\n var _backdropTransitionDuration = Util.getTransitionDurationFromElement(this._backdrop);\n\n $__default[\"default\"](this._backdrop).one(Util.TRANSITION_END, callbackRemove).emulateTransitionEnd(_backdropTransitionDuration);\n } else {\n callbackRemove();\n }\n } else if (callback) {\n callback();\n }\n } // ----------------------------------------------------------------------\n // the following methods are used to handle overflowing modals\n // todo (fat): these should probably be refactored out of modal.js\n // ----------------------------------------------------------------------\n ;\n\n _proto._adjustDialog = function _adjustDialog() {\n var isModalOverflowing = this._element.scrollHeight > document.documentElement.clientHeight;\n\n if (!this._isBodyOverflowing && isModalOverflowing) {\n this._element.style.paddingLeft = this._scrollbarWidth + \"px\";\n }\n\n if (this._isBodyOverflowing && !isModalOverflowing) {\n this._element.style.paddingRight = this._scrollbarWidth + \"px\";\n }\n };\n\n _proto._resetAdjustments = function _resetAdjustments() {\n this._element.style.paddingLeft = '';\n this._element.style.paddingRight = '';\n };\n\n _proto._checkScrollbar = function _checkScrollbar() {\n var rect = document.body.getBoundingClientRect();\n this._isBodyOverflowing = Math.round(rect.left + rect.right) < window.innerWidth;\n this._scrollbarWidth = this._getScrollbarWidth();\n };\n\n _proto._setScrollbar = function _setScrollbar() {\n var _this10 = this;\n\n if (this._isBodyOverflowing) {\n // Note: DOMNode.style.paddingRight returns the actual value or '' if not set\n // while $(DOMNode).css('padding-right') returns the calculated value or 0 if not set\n var fixedContent = [].slice.call(document.querySelectorAll(SELECTOR_FIXED_CONTENT));\n var stickyContent = [].slice.call(document.querySelectorAll(SELECTOR_STICKY_CONTENT)); // Adjust fixed content padding\n\n $__default[\"default\"](fixedContent).each(function (index, element) {\n var actualPadding = element.style.paddingRight;\n var calculatedPadding = $__default[\"default\"](element).css('padding-right');\n $__default[\"default\"](element).data('padding-right', actualPadding).css('padding-right', parseFloat(calculatedPadding) + _this10._scrollbarWidth + \"px\");\n }); // Adjust sticky content margin\n\n $__default[\"default\"](stickyContent).each(function (index, element) {\n var actualMargin = element.style.marginRight;\n var calculatedMargin = $__default[\"default\"](element).css('margin-right');\n $__default[\"default\"](element).data('margin-right', actualMargin).css('margin-right', parseFloat(calculatedMargin) - _this10._scrollbarWidth + \"px\");\n }); // Adjust body padding\n\n var actualPadding = document.body.style.paddingRight;\n var calculatedPadding = $__default[\"default\"](document.body).css('padding-right');\n $__default[\"default\"](document.body).data('padding-right', actualPadding).css('padding-right', parseFloat(calculatedPadding) + this._scrollbarWidth + \"px\");\n }\n\n $__default[\"default\"](document.body).addClass(CLASS_NAME_OPEN);\n };\n\n _proto._resetScrollbar = function _resetScrollbar() {\n // Restore fixed content padding\n var fixedContent = [].slice.call(document.querySelectorAll(SELECTOR_FIXED_CONTENT));\n $__default[\"default\"](fixedContent).each(function (index, element) {\n var padding = $__default[\"default\"](element).data('padding-right');\n $__default[\"default\"](element).removeData('padding-right');\n element.style.paddingRight = padding ? padding : '';\n }); // Restore sticky content\n\n var elements = [].slice.call(document.querySelectorAll(\"\" + SELECTOR_STICKY_CONTENT));\n $__default[\"default\"](elements).each(function (index, element) {\n var margin = $__default[\"default\"](element).data('margin-right');\n\n if (typeof margin !== 'undefined') {\n $__default[\"default\"](element).css('margin-right', margin).removeData('margin-right');\n }\n }); // Restore body padding\n\n var padding = $__default[\"default\"](document.body).data('padding-right');\n $__default[\"default\"](document.body).removeData('padding-right');\n document.body.style.paddingRight = padding ? padding : '';\n };\n\n _proto._getScrollbarWidth = function _getScrollbarWidth() {\n // thx d.walsh\n var scrollDiv = document.createElement('div');\n scrollDiv.className = CLASS_NAME_SCROLLBAR_MEASURER;\n document.body.appendChild(scrollDiv);\n var scrollbarWidth = scrollDiv.getBoundingClientRect().width - scrollDiv.clientWidth;\n document.body.removeChild(scrollDiv);\n return scrollbarWidth;\n } // Static\n ;\n\n Modal._jQueryInterface = function _jQueryInterface(config, relatedTarget) {\n return this.each(function () {\n var data = $__default[\"default\"](this).data(DATA_KEY$5);\n\n var _config = _extends({}, Default$4, $__default[\"default\"](this).data(), typeof config === 'object' && config ? config : {});\n\n if (!data) {\n data = new Modal(this, _config);\n $__default[\"default\"](this).data(DATA_KEY$5, data);\n }\n\n if (typeof config === 'string') {\n if (typeof data[config] === 'undefined') {\n throw new TypeError(\"No method named \\\"\" + config + \"\\\"\");\n }\n\n data[config](relatedTarget);\n } else if (_config.show) {\n data.show(relatedTarget);\n }\n });\n };\n\n _createClass(Modal, null, [{\n key: \"VERSION\",\n get: function get() {\n return VERSION$5;\n }\n }, {\n key: \"Default\",\n get: function get() {\n return Default$4;\n }\n }]);\n\n return Modal;\n }();\n /**\n * Data API implementation\n */\n\n\n $__default[\"default\"](document).on(EVENT_CLICK_DATA_API$1, SELECTOR_DATA_TOGGLE$1, function (event) {\n var _this11 = this;\n\n var target;\n var selector = Util.getSelectorFromElement(this);\n\n if (selector) {\n target = document.querySelector(selector);\n }\n\n var config = $__default[\"default\"](target).data(DATA_KEY$5) ? 'toggle' : _extends({}, $__default[\"default\"](target).data(), $__default[\"default\"](this).data());\n\n if (this.tagName === 'A' || this.tagName === 'AREA') {\n event.preventDefault();\n }\n\n var $target = $__default[\"default\"](target).one(EVENT_SHOW$2, function (showEvent) {\n if (showEvent.isDefaultPrevented()) {\n // Only register focus restorer if modal will actually get shown\n return;\n }\n\n $target.one(EVENT_HIDDEN$2, function () {\n if ($__default[\"default\"](_this11).is(':visible')) {\n _this11.focus();\n }\n });\n });\n\n Modal._jQueryInterface.call($__default[\"default\"](target), config, this);\n });\n /**\n * jQuery\n */\n\n $__default[\"default\"].fn[NAME$5] = Modal._jQueryInterface;\n $__default[\"default\"].fn[NAME$5].Constructor = Modal;\n\n $__default[\"default\"].fn[NAME$5].noConflict = function () {\n $__default[\"default\"].fn[NAME$5] = JQUERY_NO_CONFLICT$5;\n return Modal._jQueryInterface;\n };\n\n /**\n * --------------------------------------------------------------------------\n * Bootstrap (v4.6.2): tools/sanitizer.js\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)\n * --------------------------------------------------------------------------\n */\n var uriAttrs = ['background', 'cite', 'href', 'itemtype', 'longdesc', 'poster', 'src', 'xlink:href'];\n var ARIA_ATTRIBUTE_PATTERN = /^aria-[\\w-]*$/i;\n var DefaultWhitelist = {\n // Global attributes allowed on any supplied element below.\n '*': ['class', 'dir', 'id', 'lang', 'role', ARIA_ATTRIBUTE_PATTERN],\n a: ['target', 'href', 'title', 'rel'],\n area: [],\n b: [],\n br: [],\n col: [],\n code: [],\n div: [],\n em: [],\n hr: [],\n h1: [],\n h2: [],\n h3: [],\n h4: [],\n h5: [],\n h6: [],\n i: [],\n img: ['src', 'srcset', 'alt', 'title', 'width', 'height'],\n li: [],\n ol: [],\n p: [],\n pre: [],\n s: [],\n small: [],\n span: [],\n sub: [],\n sup: [],\n strong: [],\n u: [],\n ul: []\n };\n /**\n * A pattern that recognizes a commonly useful subset of URLs that are safe.\n *\n * Shoutout to Angular https://github.com/angular/angular/blob/12.2.x/packages/core/src/sanitization/url_sanitizer.ts\n */\n\n var SAFE_URL_PATTERN = /^(?:(?:https?|mailto|ftp|tel|file|sms):|[^#&/:?]*(?:[#/?]|$))/i;\n /**\n * A pattern that matches safe data URLs. Only matches image, video and audio types.\n *\n * Shoutout to Angular https://github.com/angular/angular/blob/12.2.x/packages/core/src/sanitization/url_sanitizer.ts\n */\n\n var DATA_URL_PATTERN = /^data:(?:image\\/(?:bmp|gif|jpeg|jpg|png|tiff|webp)|video\\/(?:mpeg|mp4|ogg|webm)|audio\\/(?:mp3|oga|ogg|opus));base64,[\\d+/a-z]+=*$/i;\n\n function allowedAttribute(attr, allowedAttributeList) {\n var attrName = attr.nodeName.toLowerCase();\n\n if (allowedAttributeList.indexOf(attrName) !== -1) {\n if (uriAttrs.indexOf(attrName) !== -1) {\n return Boolean(SAFE_URL_PATTERN.test(attr.nodeValue) || DATA_URL_PATTERN.test(attr.nodeValue));\n }\n\n return true;\n }\n\n var regExp = allowedAttributeList.filter(function (attrRegex) {\n return attrRegex instanceof RegExp;\n }); // Check if a regular expression validates the attribute.\n\n for (var i = 0, len = regExp.length; i < len; i++) {\n if (regExp[i].test(attrName)) {\n return true;\n }\n }\n\n return false;\n }\n\n function sanitizeHtml(unsafeHtml, whiteList, sanitizeFn) {\n if (unsafeHtml.length === 0) {\n return unsafeHtml;\n }\n\n if (sanitizeFn && typeof sanitizeFn === 'function') {\n return sanitizeFn(unsafeHtml);\n }\n\n var domParser = new window.DOMParser();\n var createdDocument = domParser.parseFromString(unsafeHtml, 'text/html');\n var whitelistKeys = Object.keys(whiteList);\n var elements = [].slice.call(createdDocument.body.querySelectorAll('*'));\n\n var _loop = function _loop(i, len) {\n var el = elements[i];\n var elName = el.nodeName.toLowerCase();\n\n if (whitelistKeys.indexOf(el.nodeName.toLowerCase()) === -1) {\n el.parentNode.removeChild(el);\n return \"continue\";\n }\n\n var attributeList = [].slice.call(el.attributes); // eslint-disable-next-line unicorn/prefer-spread\n\n var whitelistedAttributes = [].concat(whiteList['*'] || [], whiteList[elName] || []);\n attributeList.forEach(function (attr) {\n if (!allowedAttribute(attr, whitelistedAttributes)) {\n el.removeAttribute(attr.nodeName);\n }\n });\n };\n\n for (var i = 0, len = elements.length; i < len; i++) {\n var _ret = _loop(i);\n\n if (_ret === \"continue\") continue;\n }\n\n return createdDocument.body.innerHTML;\n }\n\n /**\n * Constants\n */\n\n var NAME$4 = 'tooltip';\n var VERSION$4 = '4.6.2';\n var DATA_KEY$4 = 'bs.tooltip';\n var EVENT_KEY$4 = \".\" + DATA_KEY$4;\n var JQUERY_NO_CONFLICT$4 = $__default[\"default\"].fn[NAME$4];\n var CLASS_PREFIX$1 = 'bs-tooltip';\n var BSCLS_PREFIX_REGEX$1 = new RegExp(\"(^|\\\\s)\" + CLASS_PREFIX$1 + \"\\\\S+\", 'g');\n var DISALLOWED_ATTRIBUTES = ['sanitize', 'whiteList', 'sanitizeFn'];\n var CLASS_NAME_FADE$3 = 'fade';\n var CLASS_NAME_SHOW$3 = 'show';\n var HOVER_STATE_SHOW = 'show';\n var HOVER_STATE_OUT = 'out';\n var SELECTOR_TOOLTIP_INNER = '.tooltip-inner';\n var SELECTOR_ARROW = '.arrow';\n var TRIGGER_HOVER = 'hover';\n var TRIGGER_FOCUS = 'focus';\n var TRIGGER_CLICK = 'click';\n var TRIGGER_MANUAL = 'manual';\n var AttachmentMap = {\n AUTO: 'auto',\n TOP: 'top',\n RIGHT: 'right',\n BOTTOM: 'bottom',\n LEFT: 'left'\n };\n var Default$3 = {\n animation: true,\n template: '
' + '
' + '
',\n trigger: 'hover focus',\n title: '',\n delay: 0,\n html: false,\n selector: false,\n placement: 'top',\n offset: 0,\n container: false,\n fallbackPlacement: 'flip',\n boundary: 'scrollParent',\n customClass: '',\n sanitize: true,\n sanitizeFn: null,\n whiteList: DefaultWhitelist,\n popperConfig: null\n };\n var DefaultType$3 = {\n animation: 'boolean',\n template: 'string',\n title: '(string|element|function)',\n trigger: 'string',\n delay: '(number|object)',\n html: 'boolean',\n selector: '(string|boolean)',\n placement: '(string|function)',\n offset: '(number|string|function)',\n container: '(string|element|boolean)',\n fallbackPlacement: '(string|array)',\n boundary: '(string|element)',\n customClass: '(string|function)',\n sanitize: 'boolean',\n sanitizeFn: '(null|function)',\n whiteList: 'object',\n popperConfig: '(null|object)'\n };\n var Event$1 = {\n HIDE: \"hide\" + EVENT_KEY$4,\n HIDDEN: \"hidden\" + EVENT_KEY$4,\n SHOW: \"show\" + EVENT_KEY$4,\n SHOWN: \"shown\" + EVENT_KEY$4,\n INSERTED: \"inserted\" + EVENT_KEY$4,\n CLICK: \"click\" + EVENT_KEY$4,\n FOCUSIN: \"focusin\" + EVENT_KEY$4,\n FOCUSOUT: \"focusout\" + EVENT_KEY$4,\n MOUSEENTER: \"mouseenter\" + EVENT_KEY$4,\n MOUSELEAVE: \"mouseleave\" + EVENT_KEY$4\n };\n /**\n * Class definition\n */\n\n var Tooltip = /*#__PURE__*/function () {\n function Tooltip(element, config) {\n if (typeof Popper__default[\"default\"] === 'undefined') {\n throw new TypeError('Bootstrap\\'s tooltips require Popper (https://popper.js.org)');\n } // Private\n\n\n this._isEnabled = true;\n this._timeout = 0;\n this._hoverState = '';\n this._activeTrigger = {};\n this._popper = null; // Protected\n\n this.element = element;\n this.config = this._getConfig(config);\n this.tip = null;\n\n this._setListeners();\n } // Getters\n\n\n var _proto = Tooltip.prototype;\n\n // Public\n _proto.enable = function enable() {\n this._isEnabled = true;\n };\n\n _proto.disable = function disable() {\n this._isEnabled = false;\n };\n\n _proto.toggleEnabled = function toggleEnabled() {\n this._isEnabled = !this._isEnabled;\n };\n\n _proto.toggle = function toggle(event) {\n if (!this._isEnabled) {\n return;\n }\n\n if (event) {\n var dataKey = this.constructor.DATA_KEY;\n var context = $__default[\"default\"](event.currentTarget).data(dataKey);\n\n if (!context) {\n context = new this.constructor(event.currentTarget, this._getDelegateConfig());\n $__default[\"default\"](event.currentTarget).data(dataKey, context);\n }\n\n context._activeTrigger.click = !context._activeTrigger.click;\n\n if (context._isWithActiveTrigger()) {\n context._enter(null, context);\n } else {\n context._leave(null, context);\n }\n } else {\n if ($__default[\"default\"](this.getTipElement()).hasClass(CLASS_NAME_SHOW$3)) {\n this._leave(null, this);\n\n return;\n }\n\n this._enter(null, this);\n }\n };\n\n _proto.dispose = function dispose() {\n clearTimeout(this._timeout);\n $__default[\"default\"].removeData(this.element, this.constructor.DATA_KEY);\n $__default[\"default\"](this.element).off(this.constructor.EVENT_KEY);\n $__default[\"default\"](this.element).closest('.modal').off('hide.bs.modal', this._hideModalHandler);\n\n if (this.tip) {\n $__default[\"default\"](this.tip).remove();\n }\n\n this._isEnabled = null;\n this._timeout = null;\n this._hoverState = null;\n this._activeTrigger = null;\n\n if (this._popper) {\n this._popper.destroy();\n }\n\n this._popper = null;\n this.element = null;\n this.config = null;\n this.tip = null;\n };\n\n _proto.show = function show() {\n var _this = this;\n\n if ($__default[\"default\"](this.element).css('display') === 'none') {\n throw new Error('Please use show on visible elements');\n }\n\n var showEvent = $__default[\"default\"].Event(this.constructor.Event.SHOW);\n\n if (this.isWithContent() && this._isEnabled) {\n $__default[\"default\"](this.element).trigger(showEvent);\n var shadowRoot = Util.findShadowRoot(this.element);\n var isInTheDom = $__default[\"default\"].contains(shadowRoot !== null ? shadowRoot : this.element.ownerDocument.documentElement, this.element);\n\n if (showEvent.isDefaultPrevented() || !isInTheDom) {\n return;\n }\n\n var tip = this.getTipElement();\n var tipId = Util.getUID(this.constructor.NAME);\n tip.setAttribute('id', tipId);\n this.element.setAttribute('aria-describedby', tipId);\n this.setContent();\n\n if (this.config.animation) {\n $__default[\"default\"](tip).addClass(CLASS_NAME_FADE$3);\n }\n\n var placement = typeof this.config.placement === 'function' ? this.config.placement.call(this, tip, this.element) : this.config.placement;\n\n var attachment = this._getAttachment(placement);\n\n this.addAttachmentClass(attachment);\n\n var container = this._getContainer();\n\n $__default[\"default\"](tip).data(this.constructor.DATA_KEY, this);\n\n if (!$__default[\"default\"].contains(this.element.ownerDocument.documentElement, this.tip)) {\n $__default[\"default\"](tip).appendTo(container);\n }\n\n $__default[\"default\"](this.element).trigger(this.constructor.Event.INSERTED);\n this._popper = new Popper__default[\"default\"](this.element, tip, this._getPopperConfig(attachment));\n $__default[\"default\"](tip).addClass(CLASS_NAME_SHOW$3);\n $__default[\"default\"](tip).addClass(this.config.customClass); // If this is a touch-enabled device we add extra\n // empty mouseover listeners to the body's immediate children;\n // only needed because of broken event delegation on iOS\n // https://www.quirksmode.org/blog/archives/2014/02/mouse_event_bub.html\n\n if ('ontouchstart' in document.documentElement) {\n $__default[\"default\"](document.body).children().on('mouseover', null, $__default[\"default\"].noop);\n }\n\n var complete = function complete() {\n if (_this.config.animation) {\n _this._fixTransition();\n }\n\n var prevHoverState = _this._hoverState;\n _this._hoverState = null;\n $__default[\"default\"](_this.element).trigger(_this.constructor.Event.SHOWN);\n\n if (prevHoverState === HOVER_STATE_OUT) {\n _this._leave(null, _this);\n }\n };\n\n if ($__default[\"default\"](this.tip).hasClass(CLASS_NAME_FADE$3)) {\n var transitionDuration = Util.getTransitionDurationFromElement(this.tip);\n $__default[\"default\"](this.tip).one(Util.TRANSITION_END, complete).emulateTransitionEnd(transitionDuration);\n } else {\n complete();\n }\n }\n };\n\n _proto.hide = function hide(callback) {\n var _this2 = this;\n\n var tip = this.getTipElement();\n var hideEvent = $__default[\"default\"].Event(this.constructor.Event.HIDE);\n\n var complete = function complete() {\n if (_this2._hoverState !== HOVER_STATE_SHOW && tip.parentNode) {\n tip.parentNode.removeChild(tip);\n }\n\n _this2._cleanTipClass();\n\n _this2.element.removeAttribute('aria-describedby');\n\n $__default[\"default\"](_this2.element).trigger(_this2.constructor.Event.HIDDEN);\n\n if (_this2._popper !== null) {\n _this2._popper.destroy();\n }\n\n if (callback) {\n callback();\n }\n };\n\n $__default[\"default\"](this.element).trigger(hideEvent);\n\n if (hideEvent.isDefaultPrevented()) {\n return;\n }\n\n $__default[\"default\"](tip).removeClass(CLASS_NAME_SHOW$3); // If this is a touch-enabled device we remove the extra\n // empty mouseover listeners we added for iOS support\n\n if ('ontouchstart' in document.documentElement) {\n $__default[\"default\"](document.body).children().off('mouseover', null, $__default[\"default\"].noop);\n }\n\n this._activeTrigger[TRIGGER_CLICK] = false;\n this._activeTrigger[TRIGGER_FOCUS] = false;\n this._activeTrigger[TRIGGER_HOVER] = false;\n\n if ($__default[\"default\"](this.tip).hasClass(CLASS_NAME_FADE$3)) {\n var transitionDuration = Util.getTransitionDurationFromElement(tip);\n $__default[\"default\"](tip).one(Util.TRANSITION_END, complete).emulateTransitionEnd(transitionDuration);\n } else {\n complete();\n }\n\n this._hoverState = '';\n };\n\n _proto.update = function update() {\n if (this._popper !== null) {\n this._popper.scheduleUpdate();\n }\n } // Protected\n ;\n\n _proto.isWithContent = function isWithContent() {\n return Boolean(this.getTitle());\n };\n\n _proto.addAttachmentClass = function addAttachmentClass(attachment) {\n $__default[\"default\"](this.getTipElement()).addClass(CLASS_PREFIX$1 + \"-\" + attachment);\n };\n\n _proto.getTipElement = function getTipElement() {\n this.tip = this.tip || $__default[\"default\"](this.config.template)[0];\n return this.tip;\n };\n\n _proto.setContent = function setContent() {\n var tip = this.getTipElement();\n this.setElementContent($__default[\"default\"](tip.querySelectorAll(SELECTOR_TOOLTIP_INNER)), this.getTitle());\n $__default[\"default\"](tip).removeClass(CLASS_NAME_FADE$3 + \" \" + CLASS_NAME_SHOW$3);\n };\n\n _proto.setElementContent = function setElementContent($element, content) {\n if (typeof content === 'object' && (content.nodeType || content.jquery)) {\n // Content is a DOM node or a jQuery\n if (this.config.html) {\n if (!$__default[\"default\"](content).parent().is($element)) {\n $element.empty().append(content);\n }\n } else {\n $element.text($__default[\"default\"](content).text());\n }\n\n return;\n }\n\n if (this.config.html) {\n if (this.config.sanitize) {\n content = sanitizeHtml(content, this.config.whiteList, this.config.sanitizeFn);\n }\n\n $element.html(content);\n } else {\n $element.text(content);\n }\n };\n\n _proto.getTitle = function getTitle() {\n var title = this.element.getAttribute('data-original-title');\n\n if (!title) {\n title = typeof this.config.title === 'function' ? this.config.title.call(this.element) : this.config.title;\n }\n\n return title;\n } // Private\n ;\n\n _proto._getPopperConfig = function _getPopperConfig(attachment) {\n var _this3 = this;\n\n var defaultBsConfig = {\n placement: attachment,\n modifiers: {\n offset: this._getOffset(),\n flip: {\n behavior: this.config.fallbackPlacement\n },\n arrow: {\n element: SELECTOR_ARROW\n },\n preventOverflow: {\n boundariesElement: this.config.boundary\n }\n },\n onCreate: function onCreate(data) {\n if (data.originalPlacement !== data.placement) {\n _this3._handlePopperPlacementChange(data);\n }\n },\n onUpdate: function onUpdate(data) {\n return _this3._handlePopperPlacementChange(data);\n }\n };\n return _extends({}, defaultBsConfig, this.config.popperConfig);\n };\n\n _proto._getOffset = function _getOffset() {\n var _this4 = this;\n\n var offset = {};\n\n if (typeof this.config.offset === 'function') {\n offset.fn = function (data) {\n data.offsets = _extends({}, data.offsets, _this4.config.offset(data.offsets, _this4.element));\n return data;\n };\n } else {\n offset.offset = this.config.offset;\n }\n\n return offset;\n };\n\n _proto._getContainer = function _getContainer() {\n if (this.config.container === false) {\n return document.body;\n }\n\n if (Util.isElement(this.config.container)) {\n return $__default[\"default\"](this.config.container);\n }\n\n return $__default[\"default\"](document).find(this.config.container);\n };\n\n _proto._getAttachment = function _getAttachment(placement) {\n return AttachmentMap[placement.toUpperCase()];\n };\n\n _proto._setListeners = function _setListeners() {\n var _this5 = this;\n\n var triggers = this.config.trigger.split(' ');\n triggers.forEach(function (trigger) {\n if (trigger === 'click') {\n $__default[\"default\"](_this5.element).on(_this5.constructor.Event.CLICK, _this5.config.selector, function (event) {\n return _this5.toggle(event);\n });\n } else if (trigger !== TRIGGER_MANUAL) {\n var eventIn = trigger === TRIGGER_HOVER ? _this5.constructor.Event.MOUSEENTER : _this5.constructor.Event.FOCUSIN;\n var eventOut = trigger === TRIGGER_HOVER ? _this5.constructor.Event.MOUSELEAVE : _this5.constructor.Event.FOCUSOUT;\n $__default[\"default\"](_this5.element).on(eventIn, _this5.config.selector, function (event) {\n return _this5._enter(event);\n }).on(eventOut, _this5.config.selector, function (event) {\n return _this5._leave(event);\n });\n }\n });\n\n this._hideModalHandler = function () {\n if (_this5.element) {\n _this5.hide();\n }\n };\n\n $__default[\"default\"](this.element).closest('.modal').on('hide.bs.modal', this._hideModalHandler);\n\n if (this.config.selector) {\n this.config = _extends({}, this.config, {\n trigger: 'manual',\n selector: ''\n });\n } else {\n this._fixTitle();\n }\n };\n\n _proto._fixTitle = function _fixTitle() {\n var titleType = typeof this.element.getAttribute('data-original-title');\n\n if (this.element.getAttribute('title') || titleType !== 'string') {\n this.element.setAttribute('data-original-title', this.element.getAttribute('title') || '');\n this.element.setAttribute('title', '');\n }\n };\n\n _proto._enter = function _enter(event, context) {\n var dataKey = this.constructor.DATA_KEY;\n context = context || $__default[\"default\"](event.currentTarget).data(dataKey);\n\n if (!context) {\n context = new this.constructor(event.currentTarget, this._getDelegateConfig());\n $__default[\"default\"](event.currentTarget).data(dataKey, context);\n }\n\n if (event) {\n context._activeTrigger[event.type === 'focusin' ? TRIGGER_FOCUS : TRIGGER_HOVER] = true;\n }\n\n if ($__default[\"default\"](context.getTipElement()).hasClass(CLASS_NAME_SHOW$3) || context._hoverState === HOVER_STATE_SHOW) {\n context._hoverState = HOVER_STATE_SHOW;\n return;\n }\n\n clearTimeout(context._timeout);\n context._hoverState = HOVER_STATE_SHOW;\n\n if (!context.config.delay || !context.config.delay.show) {\n context.show();\n return;\n }\n\n context._timeout = setTimeout(function () {\n if (context._hoverState === HOVER_STATE_SHOW) {\n context.show();\n }\n }, context.config.delay.show);\n };\n\n _proto._leave = function _leave(event, context) {\n var dataKey = this.constructor.DATA_KEY;\n context = context || $__default[\"default\"](event.currentTarget).data(dataKey);\n\n if (!context) {\n context = new this.constructor(event.currentTarget, this._getDelegateConfig());\n $__default[\"default\"](event.currentTarget).data(dataKey, context);\n }\n\n if (event) {\n context._activeTrigger[event.type === 'focusout' ? TRIGGER_FOCUS : TRIGGER_HOVER] = false;\n }\n\n if (context._isWithActiveTrigger()) {\n return;\n }\n\n clearTimeout(context._timeout);\n context._hoverState = HOVER_STATE_OUT;\n\n if (!context.config.delay || !context.config.delay.hide) {\n context.hide();\n return;\n }\n\n context._timeout = setTimeout(function () {\n if (context._hoverState === HOVER_STATE_OUT) {\n context.hide();\n }\n }, context.config.delay.hide);\n };\n\n _proto._isWithActiveTrigger = function _isWithActiveTrigger() {\n for (var trigger in this._activeTrigger) {\n if (this._activeTrigger[trigger]) {\n return true;\n }\n }\n\n return false;\n };\n\n _proto._getConfig = function _getConfig(config) {\n var dataAttributes = $__default[\"default\"](this.element).data();\n Object.keys(dataAttributes).forEach(function (dataAttr) {\n if (DISALLOWED_ATTRIBUTES.indexOf(dataAttr) !== -1) {\n delete dataAttributes[dataAttr];\n }\n });\n config = _extends({}, this.constructor.Default, dataAttributes, typeof config === 'object' && config ? config : {});\n\n if (typeof config.delay === 'number') {\n config.delay = {\n show: config.delay,\n hide: config.delay\n };\n }\n\n if (typeof config.title === 'number') {\n config.title = config.title.toString();\n }\n\n if (typeof config.content === 'number') {\n config.content = config.content.toString();\n }\n\n Util.typeCheckConfig(NAME$4, config, this.constructor.DefaultType);\n\n if (config.sanitize) {\n config.template = sanitizeHtml(config.template, config.whiteList, config.sanitizeFn);\n }\n\n return config;\n };\n\n _proto._getDelegateConfig = function _getDelegateConfig() {\n var config = {};\n\n if (this.config) {\n for (var key in this.config) {\n if (this.constructor.Default[key] !== this.config[key]) {\n config[key] = this.config[key];\n }\n }\n }\n\n return config;\n };\n\n _proto._cleanTipClass = function _cleanTipClass() {\n var $tip = $__default[\"default\"](this.getTipElement());\n var tabClass = $tip.attr('class').match(BSCLS_PREFIX_REGEX$1);\n\n if (tabClass !== null && tabClass.length) {\n $tip.removeClass(tabClass.join(''));\n }\n };\n\n _proto._handlePopperPlacementChange = function _handlePopperPlacementChange(popperData) {\n this.tip = popperData.instance.popper;\n\n this._cleanTipClass();\n\n this.addAttachmentClass(this._getAttachment(popperData.placement));\n };\n\n _proto._fixTransition = function _fixTransition() {\n var tip = this.getTipElement();\n var initConfigAnimation = this.config.animation;\n\n if (tip.getAttribute('x-placement') !== null) {\n return;\n }\n\n $__default[\"default\"](tip).removeClass(CLASS_NAME_FADE$3);\n this.config.animation = false;\n this.hide();\n this.show();\n this.config.animation = initConfigAnimation;\n } // Static\n ;\n\n Tooltip._jQueryInterface = function _jQueryInterface(config) {\n return this.each(function () {\n var $element = $__default[\"default\"](this);\n var data = $element.data(DATA_KEY$4);\n\n var _config = typeof config === 'object' && config;\n\n if (!data && /dispose|hide/.test(config)) {\n return;\n }\n\n if (!data) {\n data = new Tooltip(this, _config);\n $element.data(DATA_KEY$4, data);\n }\n\n if (typeof config === 'string') {\n if (typeof data[config] === 'undefined') {\n throw new TypeError(\"No method named \\\"\" + config + \"\\\"\");\n }\n\n data[config]();\n }\n });\n };\n\n _createClass(Tooltip, null, [{\n key: \"VERSION\",\n get: function get() {\n return VERSION$4;\n }\n }, {\n key: \"Default\",\n get: function get() {\n return Default$3;\n }\n }, {\n key: \"NAME\",\n get: function get() {\n return NAME$4;\n }\n }, {\n key: \"DATA_KEY\",\n get: function get() {\n return DATA_KEY$4;\n }\n }, {\n key: \"Event\",\n get: function get() {\n return Event$1;\n }\n }, {\n key: \"EVENT_KEY\",\n get: function get() {\n return EVENT_KEY$4;\n }\n }, {\n key: \"DefaultType\",\n get: function get() {\n return DefaultType$3;\n }\n }]);\n\n return Tooltip;\n }();\n /**\n * jQuery\n */\n\n\n $__default[\"default\"].fn[NAME$4] = Tooltip._jQueryInterface;\n $__default[\"default\"].fn[NAME$4].Constructor = Tooltip;\n\n $__default[\"default\"].fn[NAME$4].noConflict = function () {\n $__default[\"default\"].fn[NAME$4] = JQUERY_NO_CONFLICT$4;\n return Tooltip._jQueryInterface;\n };\n\n /**\n * Constants\n */\n\n var NAME$3 = 'popover';\n var VERSION$3 = '4.6.2';\n var DATA_KEY$3 = 'bs.popover';\n var EVENT_KEY$3 = \".\" + DATA_KEY$3;\n var JQUERY_NO_CONFLICT$3 = $__default[\"default\"].fn[NAME$3];\n var CLASS_PREFIX = 'bs-popover';\n var BSCLS_PREFIX_REGEX = new RegExp(\"(^|\\\\s)\" + CLASS_PREFIX + \"\\\\S+\", 'g');\n var CLASS_NAME_FADE$2 = 'fade';\n var CLASS_NAME_SHOW$2 = 'show';\n var SELECTOR_TITLE = '.popover-header';\n var SELECTOR_CONTENT = '.popover-body';\n\n var Default$2 = _extends({}, Tooltip.Default, {\n placement: 'right',\n trigger: 'click',\n content: '',\n template: '
' + '
' + '

' + '
'\n });\n\n var DefaultType$2 = _extends({}, Tooltip.DefaultType, {\n content: '(string|element|function)'\n });\n\n var Event = {\n HIDE: \"hide\" + EVENT_KEY$3,\n HIDDEN: \"hidden\" + EVENT_KEY$3,\n SHOW: \"show\" + EVENT_KEY$3,\n SHOWN: \"shown\" + EVENT_KEY$3,\n INSERTED: \"inserted\" + EVENT_KEY$3,\n CLICK: \"click\" + EVENT_KEY$3,\n FOCUSIN: \"focusin\" + EVENT_KEY$3,\n FOCUSOUT: \"focusout\" + EVENT_KEY$3,\n MOUSEENTER: \"mouseenter\" + EVENT_KEY$3,\n MOUSELEAVE: \"mouseleave\" + EVENT_KEY$3\n };\n /**\n * Class definition\n */\n\n var Popover = /*#__PURE__*/function (_Tooltip) {\n _inheritsLoose(Popover, _Tooltip);\n\n function Popover() {\n return _Tooltip.apply(this, arguments) || this;\n }\n\n var _proto = Popover.prototype;\n\n // Overrides\n _proto.isWithContent = function isWithContent() {\n return this.getTitle() || this._getContent();\n };\n\n _proto.addAttachmentClass = function addAttachmentClass(attachment) {\n $__default[\"default\"](this.getTipElement()).addClass(CLASS_PREFIX + \"-\" + attachment);\n };\n\n _proto.getTipElement = function getTipElement() {\n this.tip = this.tip || $__default[\"default\"](this.config.template)[0];\n return this.tip;\n };\n\n _proto.setContent = function setContent() {\n var $tip = $__default[\"default\"](this.getTipElement()); // We use append for html objects to maintain js events\n\n this.setElementContent($tip.find(SELECTOR_TITLE), this.getTitle());\n\n var content = this._getContent();\n\n if (typeof content === 'function') {\n content = content.call(this.element);\n }\n\n this.setElementContent($tip.find(SELECTOR_CONTENT), content);\n $tip.removeClass(CLASS_NAME_FADE$2 + \" \" + CLASS_NAME_SHOW$2);\n } // Private\n ;\n\n _proto._getContent = function _getContent() {\n return this.element.getAttribute('data-content') || this.config.content;\n };\n\n _proto._cleanTipClass = function _cleanTipClass() {\n var $tip = $__default[\"default\"](this.getTipElement());\n var tabClass = $tip.attr('class').match(BSCLS_PREFIX_REGEX);\n\n if (tabClass !== null && tabClass.length > 0) {\n $tip.removeClass(tabClass.join(''));\n }\n } // Static\n ;\n\n Popover._jQueryInterface = function _jQueryInterface(config) {\n return this.each(function () {\n var data = $__default[\"default\"](this).data(DATA_KEY$3);\n\n var _config = typeof config === 'object' ? config : null;\n\n if (!data && /dispose|hide/.test(config)) {\n return;\n }\n\n if (!data) {\n data = new Popover(this, _config);\n $__default[\"default\"](this).data(DATA_KEY$3, data);\n }\n\n if (typeof config === 'string') {\n if (typeof data[config] === 'undefined') {\n throw new TypeError(\"No method named \\\"\" + config + \"\\\"\");\n }\n\n data[config]();\n }\n });\n };\n\n _createClass(Popover, null, [{\n key: \"VERSION\",\n get: // Getters\n function get() {\n return VERSION$3;\n }\n }, {\n key: \"Default\",\n get: function get() {\n return Default$2;\n }\n }, {\n key: \"NAME\",\n get: function get() {\n return NAME$3;\n }\n }, {\n key: \"DATA_KEY\",\n get: function get() {\n return DATA_KEY$3;\n }\n }, {\n key: \"Event\",\n get: function get() {\n return Event;\n }\n }, {\n key: \"EVENT_KEY\",\n get: function get() {\n return EVENT_KEY$3;\n }\n }, {\n key: \"DefaultType\",\n get: function get() {\n return DefaultType$2;\n }\n }]);\n\n return Popover;\n }(Tooltip);\n /**\n * jQuery\n */\n\n\n $__default[\"default\"].fn[NAME$3] = Popover._jQueryInterface;\n $__default[\"default\"].fn[NAME$3].Constructor = Popover;\n\n $__default[\"default\"].fn[NAME$3].noConflict = function () {\n $__default[\"default\"].fn[NAME$3] = JQUERY_NO_CONFLICT$3;\n return Popover._jQueryInterface;\n };\n\n /**\n * Constants\n */\n\n var NAME$2 = 'scrollspy';\n var VERSION$2 = '4.6.2';\n var DATA_KEY$2 = 'bs.scrollspy';\n var EVENT_KEY$2 = \".\" + DATA_KEY$2;\n var DATA_API_KEY$1 = '.data-api';\n var JQUERY_NO_CONFLICT$2 = $__default[\"default\"].fn[NAME$2];\n var CLASS_NAME_DROPDOWN_ITEM = 'dropdown-item';\n var CLASS_NAME_ACTIVE$1 = 'active';\n var EVENT_ACTIVATE = \"activate\" + EVENT_KEY$2;\n var EVENT_SCROLL = \"scroll\" + EVENT_KEY$2;\n var EVENT_LOAD_DATA_API = \"load\" + EVENT_KEY$2 + DATA_API_KEY$1;\n var METHOD_OFFSET = 'offset';\n var METHOD_POSITION = 'position';\n var SELECTOR_DATA_SPY = '[data-spy=\"scroll\"]';\n var SELECTOR_NAV_LIST_GROUP$1 = '.nav, .list-group';\n var SELECTOR_NAV_LINKS = '.nav-link';\n var SELECTOR_NAV_ITEMS = '.nav-item';\n var SELECTOR_LIST_ITEMS = '.list-group-item';\n var SELECTOR_DROPDOWN$1 = '.dropdown';\n var SELECTOR_DROPDOWN_ITEMS = '.dropdown-item';\n var SELECTOR_DROPDOWN_TOGGLE$1 = '.dropdown-toggle';\n var Default$1 = {\n offset: 10,\n method: 'auto',\n target: ''\n };\n var DefaultType$1 = {\n offset: 'number',\n method: 'string',\n target: '(string|element)'\n };\n /**\n * Class definition\n */\n\n var ScrollSpy = /*#__PURE__*/function () {\n function ScrollSpy(element, config) {\n var _this = this;\n\n this._element = element;\n this._scrollElement = element.tagName === 'BODY' ? window : element;\n this._config = this._getConfig(config);\n this._selector = this._config.target + \" \" + SELECTOR_NAV_LINKS + \",\" + (this._config.target + \" \" + SELECTOR_LIST_ITEMS + \",\") + (this._config.target + \" \" + SELECTOR_DROPDOWN_ITEMS);\n this._offsets = [];\n this._targets = [];\n this._activeTarget = null;\n this._scrollHeight = 0;\n $__default[\"default\"](this._scrollElement).on(EVENT_SCROLL, function (event) {\n return _this._process(event);\n });\n this.refresh();\n\n this._process();\n } // Getters\n\n\n var _proto = ScrollSpy.prototype;\n\n // Public\n _proto.refresh = function refresh() {\n var _this2 = this;\n\n var autoMethod = this._scrollElement === this._scrollElement.window ? METHOD_OFFSET : METHOD_POSITION;\n var offsetMethod = this._config.method === 'auto' ? autoMethod : this._config.method;\n var offsetBase = offsetMethod === METHOD_POSITION ? this._getScrollTop() : 0;\n this._offsets = [];\n this._targets = [];\n this._scrollHeight = this._getScrollHeight();\n var targets = [].slice.call(document.querySelectorAll(this._selector));\n targets.map(function (element) {\n var target;\n var targetSelector = Util.getSelectorFromElement(element);\n\n if (targetSelector) {\n target = document.querySelector(targetSelector);\n }\n\n if (target) {\n var targetBCR = target.getBoundingClientRect();\n\n if (targetBCR.width || targetBCR.height) {\n // TODO (fat): remove sketch reliance on jQuery position/offset\n return [$__default[\"default\"](target)[offsetMethod]().top + offsetBase, targetSelector];\n }\n }\n\n return null;\n }).filter(Boolean).sort(function (a, b) {\n return a[0] - b[0];\n }).forEach(function (item) {\n _this2._offsets.push(item[0]);\n\n _this2._targets.push(item[1]);\n });\n };\n\n _proto.dispose = function dispose() {\n $__default[\"default\"].removeData(this._element, DATA_KEY$2);\n $__default[\"default\"](this._scrollElement).off(EVENT_KEY$2);\n this._element = null;\n this._scrollElement = null;\n this._config = null;\n this._selector = null;\n this._offsets = null;\n this._targets = null;\n this._activeTarget = null;\n this._scrollHeight = null;\n } // Private\n ;\n\n _proto._getConfig = function _getConfig(config) {\n config = _extends({}, Default$1, typeof config === 'object' && config ? config : {});\n\n if (typeof config.target !== 'string' && Util.isElement(config.target)) {\n var id = $__default[\"default\"](config.target).attr('id');\n\n if (!id) {\n id = Util.getUID(NAME$2);\n $__default[\"default\"](config.target).attr('id', id);\n }\n\n config.target = \"#\" + id;\n }\n\n Util.typeCheckConfig(NAME$2, config, DefaultType$1);\n return config;\n };\n\n _proto._getScrollTop = function _getScrollTop() {\n return this._scrollElement === window ? this._scrollElement.pageYOffset : this._scrollElement.scrollTop;\n };\n\n _proto._getScrollHeight = function _getScrollHeight() {\n return this._scrollElement.scrollHeight || Math.max(document.body.scrollHeight, document.documentElement.scrollHeight);\n };\n\n _proto._getOffsetHeight = function _getOffsetHeight() {\n return this._scrollElement === window ? window.innerHeight : this._scrollElement.getBoundingClientRect().height;\n };\n\n _proto._process = function _process() {\n var scrollTop = this._getScrollTop() + this._config.offset;\n\n var scrollHeight = this._getScrollHeight();\n\n var maxScroll = this._config.offset + scrollHeight - this._getOffsetHeight();\n\n if (this._scrollHeight !== scrollHeight) {\n this.refresh();\n }\n\n if (scrollTop >= maxScroll) {\n var target = this._targets[this._targets.length - 1];\n\n if (this._activeTarget !== target) {\n this._activate(target);\n }\n\n return;\n }\n\n if (this._activeTarget && scrollTop < this._offsets[0] && this._offsets[0] > 0) {\n this._activeTarget = null;\n\n this._clear();\n\n return;\n }\n\n for (var i = this._offsets.length; i--;) {\n var isActiveTarget = this._activeTarget !== this._targets[i] && scrollTop >= this._offsets[i] && (typeof this._offsets[i + 1] === 'undefined' || scrollTop < this._offsets[i + 1]);\n\n if (isActiveTarget) {\n this._activate(this._targets[i]);\n }\n }\n };\n\n _proto._activate = function _activate(target) {\n this._activeTarget = target;\n\n this._clear();\n\n var queries = this._selector.split(',').map(function (selector) {\n return selector + \"[data-target=\\\"\" + target + \"\\\"],\" + selector + \"[href=\\\"\" + target + \"\\\"]\";\n });\n\n var $link = $__default[\"default\"]([].slice.call(document.querySelectorAll(queries.join(','))));\n\n if ($link.hasClass(CLASS_NAME_DROPDOWN_ITEM)) {\n $link.closest(SELECTOR_DROPDOWN$1).find(SELECTOR_DROPDOWN_TOGGLE$1).addClass(CLASS_NAME_ACTIVE$1);\n $link.addClass(CLASS_NAME_ACTIVE$1);\n } else {\n // Set triggered link as active\n $link.addClass(CLASS_NAME_ACTIVE$1); // Set triggered links parents as active\n // With both