gistfile1.pde

int i, f=0;
int value=2;
int s=500;
void setup(){
  size(s,s);
}
void draw() {
  loadPixels();
  while (++i < (s*s)) {
    f=frameCount;
    pixels[(int)random(i)]=i%value<<f<<16|value;
  }
  updatePixels();
  i=0;
}


void keyPressed(){
 if(key=='a') value*=2;
  println(value);
}