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cursor-light-background-image.html
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cursor-light-background-image.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<link rel="shortcut icon" href="img/favicon.ico">
<title>Light on Cursor with Background Image</title>
<style>
body { margin: 0; min-height: 4000px; overflow-x: hidden; }
canvas { display: block; }
#canvas-container { position: sticky; top: 0; }
</style>
</head>
<body>
<div id="canvas-container"></div>
<script src="js/three.js"></script>
<script type="module">
// import * as THREE from './js/three.js';
import { OrbitControls } from './js/OrbitControls.js';
var container;
var camera, scene, renderer, controls, loader;
var ambientLight, pointLight, directionalLight, cameraLight, pointerLight;
var planeGeometry, planeMaterial, plane;
var objs = [];
init();
sceneAnimation();
// Initiating Scene
function init() {
// INIT Scene
// --------------------------------------
scene = new THREE.Scene();
// INIT Camera
// --------------------------------------
var cameraLeft = -10,
cameraRight = 10,
cameraTop = 10,
cameraBottom = -10;
// camera = new THREE.PerspectiveCamera(50, window.innerWidth / window.innerHeight, 0.1, 1000);
camera = new THREE.OrthographicCamera(cameraLeft, cameraRight, cameraTop, cameraBottom, 0.1, 1000);
camera.position.set(0, 0, 10);
camera.rotation.set(0, 0, 0);
// INIT Renderer
// --------------------------------------
renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize(window.innerWidth, window.innerHeight);
renderer.setClearColor('#52504c');
renderer.shadowMap.enabled = true;
renderer.shadowMap.type = THREE.PCFSoftShadowMap;
container = document.getElementById('canvas-container');
container.appendChild( renderer.domElement );
// INIT Loader
// --------------------------------------
loader = new THREE.TextureLoader();
// INIT Options
// --------------------------------------
// Grid
// helperGrid();
// Lights
addLights();
// Controls
// addControls();
// Create box
sceneFloor();
// Mouse Interactions
window.addEventListener('mousemove', function(e) { flatObjPointerSync(e) }, false);
// Window Interations
window.addEventListener('scroll', function() {
pointerLight.position.z = changeScrollingValue(0.001);
}, false);
window.addEventListener('resize', function() {
// todo keep aspect ratio of image
// camera.left = window.innerWidth * -0.01;
// camera.right = window.innerWidth * 0.01;
// camera.top = window.innerHeight * 0.01;
// camera.bottom = window.innerHeight * -0.01;
// plane.geometry.parameters.width = camera.left * -2;
// plane.geometry.parameters.height = window.innerHeight * 0.02;
renderer.setSize(window.innerWidth, window.innerHeight);
camera.updateProjectionMatrix();
}, false);
}
// Rendering the scene
function sceneAnimation() {
requestAnimationFrame(sceneAnimation);
renderer.render(scene, camera);
}
function helperGrid() {
var grid = new THREE.GridHelper(0, 0);
scene.add(grid);
}
function addLights(ambientColor = 0xffa030, directionalColor = 0xffffff) {
ambientLight = new THREE.AmbientLight(ambientColor, 0.2);
scene.add(ambientLight);
pointerLight = new THREE.PointLight(ambientColor, 4, 0, 1);
// pointerLight = new THREE.DirectionalLight(ambientColor, 0.75, 100);
pointerLight.position.set(0, 0, 1);
pointerLight.rotation.set(0, 0, 0);
pointerLight.castShadow = true;
pointerLight.shadow.mapSize.width = 2048;
pointerLight.shadow.mapSize.height = 2048;
scene.add(pointerLight);
}
function lightCameraSync(light = cameraLight) {
light.position.x = camera.position.x;
light.position.y = camera.position.y;
light.position.z = camera.position.z;
light.rotation.x = camera.rotation.x;
light.rotation.y = camera.rotation.y;
light.rotation.z = camera.rotation.z;
}
function flatObjPointerSync(e, obj = pointerLight, minX = -10, maxY = 10, maxX = 10, minY = -10) {
var deltaX = (minX - maxX) * -1;
var deltaY = (minY - maxY) * -1;
var positionX = deltaX / window.innerWidth * e.x - maxX;
var positionY = (deltaY / window.innerHeight * e.y - maxY) * -1;
obj.position.x = positionX;
obj.position.y = positionY;
}
function changeScrollingValue(multiplicator = 0.01) {
return window.pageYOffset * multiplicator;
}
function addControls() {
controls = new OrbitControls(camera, renderer.domElement);
controls.screenSpacePanning = true;
controls.minDistance = 2;
controls.maxDistance = 60;
controls.target.set(0, 0, 0);
controls.update();
}
function sceneFloor() {
planeGeometry = new THREE.PlaneGeometry(20, 20);
planeMaterial = new THREE.MeshStandardMaterial( {map: loader.load('img/shiba-inu-chemistry.png'), color: 0x52504c} );
plane = new THREE.Mesh(planeGeometry, planeMaterial);
plane.castShadow = false;
plane.receiveShadow = true;
plane.position.y = 0;
plane.rotation.x = 0;
scene.add(plane);
objs.push(plane);
}
</script>
</body>
</html>