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KinemeGLGridRendererPatch.m
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#import <OpenGL/CGLMacro.h>
#import <OpenGL/gl.h>
#import <OpenGL/OpenGL.h>
#import "KinemeGLGridRendererPatch.h"
#define LERP(p0, p1, alpha) (p0+alpha*(p1-p0))
//#define LERP4(n0, n1, n2, n3, xa, ya) LERP(LERP(n0,n1,xa),LERP(n3,n2,xa),ya)
static inline float LERP4(float n0, float n1, float n2, float n3, float xa, float ya)
{
return LERP(LERP(n0,n1,xa),LERP(n3,n2,xa),ya);
}
@implementation KinemeGLGridRendererPatch : QCPatch
+ (QCPatchExecutionMode)executionModeWithIdentifier:(id)fp8
{
return 1;
}
+ (BOOL)allowsSubpatchesWithIdentifier:(id)fp8
{
return NO;
}
- (id)initWithIdentifier:(id)fp8
{
self=[super initWithIdentifier:fp8];
if(self)
{
/*vertexData = NULL;
colorData = NULL;
texData = NULL;
currentWidth = 0;
currentHeight = 0;*/
[inputWireFrame setMaxIndexValue:2];
[[self userInfo] setObject:@"Kineme GL Grid Renderer" forKey:@"name"];
}
return self;
}
/*GLfloat S [4] =
{ 1.0, 0.0, 0.0, +0.5 };
GLfloat T[14] =
{ 0.0, 1.0, 0.0, +0.5 };*/
- (void)enable:(QCOpenGLContext*)context
{
CGLContextObj cgl_ctx = [context CGLContextObj];
gridList = glGenLists(1);
}
- (void)disable:(QCOpenGLContext*)context
{
CGLContextObj cgl_ctx = [context CGLContextObj];
glDeleteLists(gridList, 1);
}
- (BOOL)execute:(QCOpenGLContext *)context time:(double)time arguments:(NSDictionary *)arguments
{
QCStructure *mesh = [inputStructure structureValue];
QCStructure *vertex;
unsigned int x, y;
unsigned int width, height;
if(mesh == nil)
return YES;
width = [[mesh memberForKey:@"width"] intValue];
height = [[mesh memberForKey:@"height"] intValue];
if(width <= 0 || height <= 0)
return YES;
CGLContextObj cgl_ctx = [context CGLContextObj];
if([inputStructure wasUpdated] || [inputSubdivisionAmount wasUpdated] || [inputColor wasUpdated])
{
CGFloat r, g, b, a;
[inputColor getRed:&r green:&g blue:&b alpha:&a];
unsigned int subdivisions = [inputSubdivisionAmount indexValue];
glNewList(gridList, GL_COMPILE); // rebuild list
{
glBegin(GL_QUADS/*_STRIP*/);
for(y = 0; y < height; ++y)
{
//glBegin(GL_LINE_STRIP);
for(x = 0; x < width; ++x)
{
/*glColor4f(colorData[index*4+0], colorData[index*4+1], colorData[index*4+2], colorData[index*4+3]);
glTexCoord2f(texData[index*2+0], texData[index*2+1]);
glVertex3f(vertexData[index*3+0], vertexData[index*3+0], vertexData[index*3+0]);
glColor4f(colorData[index*4+0], colorData[index*4+1], colorData[index*4+2], colorData[index*4+3]);
glTexCoord2f(texData[index*2+0], texData[index*2+1]);
glVertex3f(vertexData[index*3+0], vertexData[index*3+0], vertexData[index*3+0]);
glColor4f(colorData[index*4+0], colorData[index*4+1], colorData[index*4+2], colorData[index*4+3]);
glTexCoord2f(texData[index*2+0], texData[index*2+1]);
glVertex3f(vertexData[index*3+0], vertexData[index*3+0], vertexData[index*3+0]);
glColor4f(colorData[index*4+0], colorData[index*4+1], colorData[index*4+2], colorData[index*4+3]);
glTexCoord2f(texData[index*2+0], texData[index*2+1]);
glVertex3f(vertexData[index*3+0], vertexData[index*3+0], vertexData[index*3+0]);*/
/*glColor4fv(colorData+4 * (y*(width+1)+x));
glTexCoord2fv(texData+2 * (y*(width+1)+x));
glVertex3fv(vertexData+3 * (y*(width+1)+x));
glColor4fv(colorData+4 * (y*(width+1)+x+1));
glTexCoord2fv(texData+2 * (y*(width+1)+x+1));
glVertex3fv(vertexData+3 * (y*(width+1)+x+1));
glColor4fv(colorData+4 * ((y+1)*(width+1)+x+1));
glTexCoord2fv(texData+2 * ((y+1)*(width+1)+x+1));
glVertex3fv(vertexData+3 * ((y+1)*(width+1)+x+1));
glColor4fv(colorData+4 * ((y+1)*(width+1)+x));
glTexCoord2fv(texData+2 * ((y+1)*(width+1)+x));
glVertex3fv(vertexData+3 * ((y+1)*(width+1)+x));*/
float color[4][4];
float vert[4][3];
float tex[4][2];
/* top, bottom, for each column. first index is 1+x (stupid structure constructor), then width+1+x, */
vertex = [mesh memberForKey:[NSString stringWithFormat:@"vertex_%i",1+y*(width+1)+x]];
color[0][0] = [[vertex memberForKey:@"r"] floatValue];
color[0][1] = [[vertex memberForKey:@"g"] floatValue];
color[0][2] = [[vertex memberForKey:@"b"] floatValue];
color[0][3] = [[vertex memberForKey:@"a"] floatValue];
tex[0][0] = [[vertex memberForKey:@"u"] floatValue];
tex[0][1] = [[vertex memberForKey:@"v"] floatValue];
vert[0][0] = [[vertex memberForKey:@"x"] floatValue];
vert[0][1] = [[vertex memberForKey:@"y"] floatValue];
vert[0][2] = [[vertex memberForKey:@"z"] floatValue];
/*glColor4f(
[[vertex memberForKey:@"r"] floatValue],
[[vertex memberForKey:@"g"] floatValue],
[[vertex memberForKey:@"b"] floatValue],
[[vertex memberForKey:@"a"] floatValue]);
glTexCoord2f([[vertex memberForKey:@"u"] floatValue],[[vertex memberForKey:@"v"] floatValue]);
glVertex3f(
[[vertex memberForKey:@"x"] floatValue],
[[vertex memberForKey:@"y"] floatValue],
[[vertex memberForKey:@"z"] floatValue]);*/
vertex = [mesh memberForKey:[NSString stringWithFormat:@"vertex_%i",1+y*(width+1)+x+1]];
color[1][0] = [[vertex memberForKey:@"r"] floatValue];
color[1][1] = [[vertex memberForKey:@"g"] floatValue];
color[1][2] = [[vertex memberForKey:@"b"] floatValue];
color[1][3] = [[vertex memberForKey:@"a"] floatValue];
tex[1][0] = [[vertex memberForKey:@"u"] floatValue];
tex[1][1] = [[vertex memberForKey:@"v"] floatValue];
vert[1][0] = [[vertex memberForKey:@"x"] floatValue];
vert[1][1] = [[vertex memberForKey:@"y"] floatValue];
vert[1][2] = [[vertex memberForKey:@"z"] floatValue];
/*glColor4f(
[[vertex memberForKey:@"r"] floatValue],
[[vertex memberForKey:@"g"] floatValue],
[[vertex memberForKey:@"b"] floatValue],
[[vertex memberForKey:@"a"] floatValue]);
glTexCoord2f([[vertex memberForKey:@"u"] floatValue],[[vertex memberForKey:@"v"] floatValue]);
glVertex3f(
[[vertex memberForKey:@"x"] floatValue],
[[vertex memberForKey:@"y"] floatValue],
[[vertex memberForKey:@"z"] floatValue]);*/
vertex = [mesh memberForKey:[NSString stringWithFormat:@"vertex_%i",1+(y+1)*(width+1)+x+1]];
color[2][0] = [[vertex memberForKey:@"r"] floatValue];
color[2][1] = [[vertex memberForKey:@"g"] floatValue];
color[2][2] = [[vertex memberForKey:@"b"] floatValue];
color[2][3] = [[vertex memberForKey:@"a"] floatValue];
tex[2][0] = [[vertex memberForKey:@"u"] floatValue];
tex[2][1] = [[vertex memberForKey:@"v"] floatValue];
vert[2][0] = [[vertex memberForKey:@"x"] floatValue];
vert[2][1] = [[vertex memberForKey:@"y"] floatValue];
vert[2][2] = [[vertex memberForKey:@"z"] floatValue];
/*glColor4f(
[[vertex memberForKey:@"r"] floatValue],
[[vertex memberForKey:@"g"] floatValue],
[[vertex memberForKey:@"b"] floatValue],
[[vertex memberForKey:@"a"] floatValue]);
glTexCoord2f([[vertex memberForKey:@"u"] floatValue],[[vertex memberForKey:@"v"] floatValue]);
glVertex3f(
[[vertex memberForKey:@"x"] floatValue],
[[vertex memberForKey:@"y"] floatValue],
[[vertex memberForKey:@"z"] floatValue]);*/
vertex = [mesh memberForKey:[NSString stringWithFormat:@"vertex_%i",1+(y+1)*(width+1)+x]];
color[3][0] = [[vertex memberForKey:@"r"] floatValue];
color[3][1] = [[vertex memberForKey:@"g"] floatValue];
color[3][2] = [[vertex memberForKey:@"b"] floatValue];
color[3][3] = [[vertex memberForKey:@"a"] floatValue];
tex[3][0] = [[vertex memberForKey:@"u"] floatValue];
tex[3][1] = [[vertex memberForKey:@"v"] floatValue];
vert[3][0] = [[vertex memberForKey:@"x"] floatValue];
vert[3][1] = [[vertex memberForKey:@"y"] floatValue];
vert[3][2] = [[vertex memberForKey:@"z"] floatValue];
/*glColor4f(
[[vertex memberForKey:@"r"] floatValue],
[[vertex memberForKey:@"g"] floatValue],
[[vertex memberForKey:@"b"] floatValue],
[[vertex memberForKey:@"a"] floatValue]);
glTexCoord2f([[vertex memberForKey:@"u"] floatValue],[[vertex memberForKey:@"v"] floatValue]);
glVertex3f(
[[vertex memberForKey:@"x"] floatValue],
[[vertex memberForKey:@"y"] floatValue],
[[vertex memberForKey:@"z"] floatValue]);*/
// simple case -- save a ton of math + code
if(subdivisions == 0)
{
int coord;
for(coord = 0; coord < 4; ++coord)
{
color[coord][0] *= r;
color[coord][1] *= g;
color[coord][2] *= b;
color[coord][3] *= a;
glColor4fv(color[coord]);
glTexCoord2fv(tex[coord]);
glVertex3fv(vert[coord]);
}
}
else // greater than zero (subdivide the above quad into subdivisions*subdivisions equally sized quads)
{
float substep = 1.0f / (subdivisions+1.f);
int xTile, yTile;
float yAlpha = 0;
for(yTile = 0; yTile <= subdivisions; ++yTile)
{
float xAlpha = 0;
for(xTile = 0; xTile <= subdivisions; ++xTile)
{
glColor4f(r * LERP4(color[0][0],color[1][0],color[2][0], color[3][0], xAlpha, yAlpha),
g * LERP4(color[0][1],color[1][1],color[2][1], color[3][1], xAlpha, yAlpha),
b * LERP4(color[0][2],color[1][2],color[2][2], color[3][2], xAlpha, yAlpha),
a * LERP4(color[0][3],color[1][3],color[2][3], color[3][3], xAlpha, yAlpha));
glTexCoord2f(LERP4(tex[0][0],tex[1][0],tex[2][0], tex[3][0], xAlpha, yAlpha),
LERP4(tex[0][1],tex[1][1],tex[2][1], tex[3][1], xAlpha, yAlpha));
glVertex3f(LERP4(vert[0][0],vert[1][0],vert[2][0], vert[3][0], xAlpha, yAlpha),
LERP4(vert[0][1],vert[1][1],vert[2][1], vert[3][1], xAlpha, yAlpha),
LERP4(vert[0][2],vert[1][2],vert[2][2], vert[3][2], xAlpha, yAlpha));
glColor4f(r * LERP4(color[0][0],color[1][0],color[2][0], color[3][0], xAlpha+substep, yAlpha),
g * LERP4(color[0][1],color[1][1],color[2][1], color[3][1], xAlpha+substep, yAlpha),
b * LERP4(color[0][2],color[1][2],color[2][2], color[3][2], xAlpha+substep, yAlpha),
a * LERP4(color[0][3],color[1][3],color[2][3], color[3][3], xAlpha+substep, yAlpha));
glTexCoord2f(LERP4(tex[0][0],tex[1][0],tex[2][0], tex[3][0], xAlpha+substep, yAlpha),
LERP4(tex[0][1],tex[1][1],tex[2][1], tex[3][1], xAlpha+substep, yAlpha));
glVertex3f(LERP4(vert[0][0],vert[1][0],vert[2][0], vert[3][0], xAlpha+substep, yAlpha),
LERP4(vert[0][1],vert[1][1],vert[2][1], vert[3][1], xAlpha+substep, yAlpha),
LERP4(vert[0][2],vert[1][2],vert[2][2], vert[3][2], xAlpha+substep, yAlpha));
glColor4f(r * LERP4(color[0][0],color[1][0],color[2][0], color[3][0], xAlpha+substep, yAlpha+substep),
g * LERP4(color[0][1],color[1][1],color[2][1], color[3][1], xAlpha+substep, yAlpha+substep),
b * LERP4(color[0][2],color[1][2],color[2][2], color[3][2], xAlpha+substep, yAlpha+substep),
a * LERP4(color[0][3],color[1][3],color[2][3], color[3][3], xAlpha+substep, yAlpha+substep));
glTexCoord2f(LERP4(tex[0][0],tex[1][0],tex[2][0], tex[3][0], xAlpha+substep, yAlpha+substep),
LERP4(tex[0][1],tex[1][1],tex[2][1], tex[3][1], xAlpha+substep, yAlpha+substep));
glVertex3f(LERP4(vert[0][0],vert[1][0],vert[2][0], vert[3][0], xAlpha+substep, yAlpha+substep),
LERP4(vert[0][1],vert[1][1],vert[2][1], vert[3][1], xAlpha+substep, yAlpha+substep),
LERP4(vert[0][2],vert[1][2],vert[2][2], vert[3][2], xAlpha+substep, yAlpha+substep));
glColor4f(r * LERP4(color[0][0],color[1][0],color[2][0], color[3][0], xAlpha, yAlpha+substep),
g * LERP4(color[0][1],color[1][1],color[2][1], color[3][1], xAlpha, yAlpha+substep),
b * LERP4(color[0][2],color[1][2],color[2][2], color[3][2], xAlpha, yAlpha+substep),
a * LERP4(color[0][3],color[1][3],color[2][3], color[3][3], xAlpha, yAlpha+substep));
glTexCoord2f(LERP4(tex[0][0],tex[1][0],tex[2][0], tex[3][0], xAlpha, yAlpha+substep),
LERP4(tex[0][1],tex[1][1],tex[2][1], tex[3][1], xAlpha, yAlpha+substep));
glVertex3f(LERP4(vert[0][0],vert[1][0],vert[2][0], vert[3][0], xAlpha, yAlpha+substep),
LERP4(vert[0][1],vert[1][1],vert[2][1], vert[3][1], xAlpha, yAlpha+substep),
LERP4(vert[0][2],vert[1][2],vert[2][2], vert[3][2], xAlpha, yAlpha+substep));
xAlpha += substep;
}
yAlpha += substep;
}
}
}
}
glEnd();
}
glEndList();
}
[inputImage setOnOpenGLContext: context unit:GL_TEXTURE0];
[inputDepth setOnOpenGLContext: context];
[inputBlending setOnOpenGLContext:context];
[inputCulling setOnOpenGLContext:context];
glEnable(GL_POINT_SMOOTH);
glEnable(GL_LINE_SMOOTH);
glCallList(gridList);
[inputCulling unsetOnOpenGLContext:context];
[inputBlending unsetOnOpenGLContext:context];
[inputImage unsetOnOpenGLContext: context unit:GL_TEXTURE0];
if([inputWireFrame indexValue] == 1) // triangles
{
glColor4f(1.0,1.0,1.0,1.0);
for(y = 0; y < height; ++y)
{
for(x = 0; x < width; ++x)
{
// same as above, but start at 3, and end at 2 (2 extra points) to complete the wireframe
/* top, bottom, for each columb. first index is 1+x (stupid structure constructor), then width+1+x, */
glBegin(GL_LINE_STRIP);
vertex = [mesh memberForKey:[NSString stringWithFormat:@"vertex_%i",1+y*(width+1)+x+1]];
glVertex3f(
[[vertex memberForKey:@"x"] floatValue],
[[vertex memberForKey:@"y"] floatValue],
[[vertex memberForKey:@"z"] floatValue]);
vertex = [mesh memberForKey:[NSString stringWithFormat:@"vertex_%i",1+y*(width+1)+x]];
glVertex3f(
[[vertex memberForKey:@"x"] floatValue],
[[vertex memberForKey:@"y"] floatValue],
[[vertex memberForKey:@"z"] floatValue]);
vertex = [mesh memberForKey:[NSString stringWithFormat:@"vertex_%i",1+(y+1)*(width+1)+x]];
glVertex3f(
[[vertex memberForKey:@"x"] floatValue],
[[vertex memberForKey:@"y"] floatValue],
[[vertex memberForKey:@"z"] floatValue]);
vertex = [mesh memberForKey:[NSString stringWithFormat:@"vertex_%i",1+y*(width+1)+x+1]];
glVertex3f(
[[vertex memberForKey:@"x"] floatValue],
[[vertex memberForKey:@"y"] floatValue],
[[vertex memberForKey:@"z"] floatValue]);
vertex = [mesh memberForKey:[NSString stringWithFormat:@"vertex_%i",1+(y+1)*(width+1)+x+1]];
glVertex3f(
[[vertex memberForKey:@"x"] floatValue],
[[vertex memberForKey:@"y"] floatValue],
[[vertex memberForKey:@"z"] floatValue]);
vertex = [mesh memberForKey:[NSString stringWithFormat:@"vertex_%i",1+(y+1)*(width+1)+x]];
glVertex3f(
[[vertex memberForKey:@"x"] floatValue],
[[vertex memberForKey:@"y"] floatValue],
[[vertex memberForKey:@"z"] floatValue]);
glEnd();
}
}
}
else if ([inputWireFrame indexValue] == 2) // quad
{
glColor4f(1.0,1.0,1.0,1.0);
for(y = 0; y < height; ++y)
{
for(x = 0; x < width; ++x)
{
glBegin(GL_LINE_STRIP);
vertex = [mesh memberForKey:[NSString stringWithFormat:@"vertex_%i",1+y*(width+1)+x]];
glVertex3f(
[[vertex memberForKey:@"x"] floatValue],
[[vertex memberForKey:@"y"] floatValue],
[[vertex memberForKey:@"z"] floatValue]);
vertex = [mesh memberForKey:[NSString stringWithFormat:@"vertex_%i",1+(y+1)*(width+1)+x]];
glVertex3f(
[[vertex memberForKey:@"x"] floatValue],
[[vertex memberForKey:@"y"] floatValue],
[[vertex memberForKey:@"z"] floatValue]);
vertex = [mesh memberForKey:[NSString stringWithFormat:@"vertex_%i",1+(y+1)*(width+1)+x+1]];
glVertex3f(
[[vertex memberForKey:@"x"] floatValue],
[[vertex memberForKey:@"y"] floatValue],
[[vertex memberForKey:@"z"] floatValue]);
vertex = [mesh memberForKey:[NSString stringWithFormat:@"vertex_%i",1+y*(width+1)+x+1]];
glVertex3f(
[[vertex memberForKey:@"x"] floatValue],
[[vertex memberForKey:@"y"] floatValue],
[[vertex memberForKey:@"z"] floatValue]);
vertex = [mesh memberForKey:[NSString stringWithFormat:@"vertex_%i",1+y*(width+1)+x]];
glVertex3f(
[[vertex memberForKey:@"x"] floatValue],
[[vertex memberForKey:@"y"] floatValue],
[[vertex memberForKey:@"z"] floatValue]);
/*vertex = [mesh memberForKey:[NSString stringWithFormat:@"vertex_%i",1+y*(width+1)+x]];
glVertex3f(
[[vertex memberForKey:@"x"] floatValue],
[[vertex memberForKey:@"y"] floatValue],
[[vertex memberForKey:@"z"] floatValue]);
vertex = [mesh memberForKey:[NSString stringWithFormat:@"vertex_%i",1+(y+1)*(width+1)+x]];
glVertex3f(
[[vertex memberForKey:@"x"] floatValue],
[[vertex memberForKey:@"y"] floatValue],
[[vertex memberForKey:@"z"] floatValue]);
vertex = [mesh memberForKey:[NSString stringWithFormat:@"vertex_%i",1+y*(width+1)+x+1]];
glVertex3f(
[[vertex memberForKey:@"x"] floatValue],
[[vertex memberForKey:@"y"] floatValue],
[[vertex memberForKey:@"z"] floatValue]);
vertex = [mesh memberForKey:[NSString stringWithFormat:@"vertex_%i",1+(y+1)*(width+1)+x+1]];
glVertex3f(
[[vertex memberForKey:@"x"] floatValue],
[[vertex memberForKey:@"y"] floatValue],
[[vertex memberForKey:@"z"] floatValue]);
vertex = [mesh memberForKey:[NSString stringWithFormat:@"vertex_%i",1+(y+1)*(width+1)+x]];
glVertex3f(
[[vertex memberForKey:@"x"] floatValue],
[[vertex memberForKey:@"y"] floatValue],
[[vertex memberForKey:@"z"] floatValue]);*/
glEnd();
}
}
}
if([inputHighlightSelection booleanValue] == TRUE)
{
GLfloat origPointSize;
glGetFloatv(GL_POINT_SIZE,&origPointSize);
glPointSize(8.0);
glBegin(GL_POINTS);
glColor4f(1.0,0.1,0.1,1.0);
vertex = [mesh memberForKey:[NSString stringWithFormat:@"vertex_%i",[inputSelection indexValue]+1]];
glVertex3f(
[[vertex memberForKey:@"x"] floatValue],
[[vertex memberForKey:@"y"] floatValue],
[[vertex memberForKey:@"z"] floatValue]);
glEnd();
glPointSize(origPointSize);
}
[inputDepth unsetOnOpenGLContext: context];
//currentStructure = mesh;
return YES;
}
@end