size(300,300);
  background(0);
  fill(255,20);
  noStroke();
  smooth();

for (int a = 1; a < 300; a += 13) {
  for (int b = 299; b > 1; b -=17) {
  bezier(a, 300-b, 150, 50, 150, 200, 300-a, b);
   }
}