Generates layers of triangles with semi-random dimensions

gistfile1.pde

int i = 0;
int j = 0;
boolean run = true;

void setup() {
 
 background(#ffffff);
 size(600, 600);
 frameRate(1000);

}

void draw() {
  
  if (run) {
  
    stroke(#808080);
    strokeWeight(random(1, 10));
    fill(0, 0, random(63, 255));
    triangle(0, 0, i, 0, 0, i);
    i++;
    
    if (i == width - j) {
      i = 0;
      j = j + (int) random(10, 100);
    }
  
    if (j >= width) run = false;
  }
}