int n;
float t = 0;
void setup() {
  size(480, 480);
  smooth();

  n = 500;
}

void draw() {
  noStroke();
  fill(25,25,25);
  float radius = height / 3;
  float angle = 0;
  float angleStep = 0.005;
  float freq = 6;
  float amp = 20;

  background(255);
  cerchio(angle, radius, freq, amp, angleStep, t);
  t = t + 0.07;

}

void cerchio(float angle, float radius, float freq, float amp, float angleStep, float t) {


  while (angle <= TWO_PI) {
    float dx = (width / 2) + (radius + sin(angle * freq) * (amp * sin(t))) * cos(angle);
    float dy = (height / 2) + (radius + sin(angle * freq) * (amp * sin(t))) * sin(angle);
    ellipse(dx, dy, 2, 2);
    float dw = (width / 2) + radius * cos(angle);
    float dz = (height / 2) + radius * sin(angle);
    angle += angleStep;

    ellipse(dw, dz, 2, 2);
  }
}