/* This code creates a picture of expanding "star".
 Based on 'Fun Programming' video tutorials
 */


float r = 0;

void setup() {
  size(600, 600);
  background(0);
  smooth();
  noStroke();
}

void draw() {
  translate(width/2, height/2);
  rotate(r);
  fill(random(255), 0, random(10, 100), 60);
  float circle_size = random(5, 8);
  //change parameters below to get different versions of the image
  quad(100 + r, 10, circle_size, circle_size, 0, cos(r), 100, 10);
  r = r + 0.9;
}