1. Exception in thread "Animation Thread" java.lang.RuntimeException: PTexture: wrong length of pixels array
2. at processing.opengl.PTexture.set(PTexture.java:246)
3. at processing.opengl.PGraphicsOpenGL.updateTexture(PGraphicsOpenGL.java:6972)
4. at processing.opengl.PGraphicsOpenGL.getTexture(PGraphicsOpenGL.java:6941)
5. at processing.opengl.PGraphicsOpenGL.renderTriangles(PGraphicsOpenGL.java:2702)
6. at processing.opengl.PGraphicsOpenGL.endShape(PGraphicsOpenGL.java:1962)
7. at processing.core.PGraphics.endShape(PGraphics.java:1376)
8. at processing.core.PGraphics.imageImpl(PGraphics.java:3159)
9. at processing.core.PGraphics.image(PGraphics.java:3015)
10. at processing.core.PApplet.image(PApplet.java:10664)
11. at Atomos_v1_0$Atom.display(Atomos_v1_0.java:70)
12. at Atomos_v1_0.draw(Atomos_v1_0.java:32)
13. at processing.core.PApplet.handleDraw(PApplet.java:1891)
14. at processing.core.PApplet.run(PApplet.java:1788)
15. at java.lang.Thread.run(Thread.java:680)

1. Atom atom;
2. 
   
3. public void setup(){
4.   size(960, 600, P3D);
5.   color c = color(14, 147, 193);
6.   atom = new Atom(new PVector(width/2, height/2), new PVector(0, 0), 150, c);
7.   
8. }
9. 
   
10. public void draw(){
11.   background(100);
12.   atom.display();
13. }
14. 
    
15. public class Atom{
16.   
17.   PVector loc, vel;
18.   int size;
19.   color atomColor;
20.   PGraphics pg;
21.   
22.   Atom(PVector _loc, PVector _vel, int _size, color _atomColor){
23.     this.loc = _loc;
24.     this.vel = _vel;
25.     this.size = _size;
26.     this.atomColor = _atomColor;
27.     this.pg = new PGraphics();
28.     this.pg = createGraphics(this.size, this.size, P2D);
29.     this.pg.beginDraw();
30.     PVector center = new PVector(this.size/2, this.size/2);
31.     
32.     for(int x = 0; x <= this.size; x++){
33.       for(int y = 0; y <= this.size; y++){
34.         PVector point = new PVector(x, y);
35.         float distance = PVector.dist(center, point);
36.         float maxDist = this.pg.width/2;
37.         float distCoeff = map(distance, 0, maxDist, 255, 0);
38.         int thisColor = color(this.atomColor, distCoeff);
39.         this.pg.set(x, y, thisColor);
40.         println("("+x+", "+y+") = "+"("+red(thisColor)+", "+green(thisColor)+", "+blue(thisColor)+")");
41.       }
42.     }
43.     this.pg.loadPixels();
44.     println(this.size*this.size);
45.     println(this.pg.pixels.length);
46.     pg.endDraw();
47.   }
48.   
49.   public void display(){
50.     imageMode(CENTER);
51.     image(this.pg, this.loc.x, this.loc.y);
52.   }
53. }

i read about an issue with the PTexture error on the processing googlecode site here:  http://code.google.com/p/processing/issues/detail?id=829. It says that it has been resolved however i'm getting the error on 2.0a1. anyone know how i can use 2d graphics on a 3d view...if that makes any sense