float x, y, r, theta, a, golden;

void setup() {
  size(640, 640);
  golden = 137.5;
  noLoop();
}

void draw() {
  translate(width/2, height/2);
  a = 0.084;
  for (int i = 0; i < 360*3; i++) {
    theta = radians(i*golden);
    r = a * theta;
    x = r * cos(theta);
    y = r * sin(theta);
    fill(random(127, 255), random(127, 255), random(127, 255));
    ellipse(x, y, 8+i/100.0, 8+i/100.0);
  }
}