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Index › Programming Questions & Help › OpenGL and 3D Libraries › Anaglyph stereo vision perspective
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Anaglyph stereo vision perspective (Read 969 times)
jeffg
Anaglyph stereo vision perspective
Feb 24th, 2010, 9:59am  
I'm trying to create an anaglyph.  I've been playing with glColorMask, but I can't figure out the perspective stuff with the camera.  I can separate the colors, I don't know how to shift it the images for each eye.  Could someone help me out. Smiley

Code:
import peasy.*;
import processing.opengl.*;  
import javax.media.opengl.GL;

PeasyCam cam;
PGraphicsOpenGL pgl;
GL gl;
float fov;
float cameraZ;

void setup() {
  size(500,500, OPENGL);
  cam = new PeasyCam(this, 100);
  cam.setMinimumDistance(50);
  cam.setMaximumDistance(500);
  pgl = (PGraphicsOpenGL) g;
  gl = pgl.gl;
  fov = PI/3.0;
  cameraZ = (height/2.0) / tan(fov/2.0);
}
void draw() {

  background(0);
  for(int x3d = 0; x3d < 2; x3d++) {

    if(x3d == 0) {
	println(fov);
     // translate(1,1,1);
	perspective(fov, float(width)/float(height), 
		cameraZ/10.0, cameraZ*10.0);
	gl.glColorMask(true, false, false, true);
    } 
    else {
	//translate(-1,-1,-1);
	perspective(fov-.03, float(width)/float(height), 
		cameraZ/10.0, cameraZ*10.0);
	gl.glColorMask(false, true, true, true); 
    }

    pushMatrix();
    fill(255,0,0);
    box(30);

    translate(0,0,20);
    fill(0,0,255);
    box(5);

    translate(0,20,-20);
    fill(0,255,0);
    box(5);
    translate(20,-20,0);
    fill(255,255,0);
    box(5);
    translate(-40,0,0);
    fill(255,128,0);
    box(5);
    translate(20,-20,0);
    fill(128,0,255);
    box(5);
    translate(0,20,-20);
    fill(128,128,128);
    box(5);
    popMatrix();
  }
   gl.glColorMask(true, true, true, true); 

}
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koogy
Re: Anaglyph stereo vision perspective
Reply #1 - Feb 24th, 2010, 10:58am  
camera.pan()?

you just need to move the camera for the second frame to the other eye, as it were.
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jeffg
Re: Anaglyph stereo vision perspective
Reply #2 - Feb 24th, 2010, 11:34am  
Sounds good... how far do you pan it. haha  Is there a particular direction for each eye.
Left eye
camera.pan(-1.0,-1.0)

Right eye
camera.pan(1.0,1.0)

Something like that?
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