Xor Fractal

  // XOR Fractal - Jim Bumgardner
  
  int fieldSize = 128;
  PGraphics fg;
  
  void setup()
  {
    size(496,496);
    fg = createGraphics(fieldSize,fieldSize,P2D);
    fg.loadPixels();
    frameRate(12);
    smooth();
  }
  
  void draw()
  {
    int n  = 0;
    for (int y = 0; y < fieldSize; ++y) {
      for (int x = 0; x < fieldSize; ++x) {
        int v = ((y ^ (x+frameCount/4)) % 3);
        fg.pixels[n] = (v & 1) > 0? #FFFFFF : #000000;
        n++;
      }
    }  
    fg.updatePixels();
    image(fg,0,0,496,496);
  }