circles

ArrayList thingies = new ArrayList();
float limit, r, org_x, org_y;
float sw = 3;
color bg = #2E2633;
color s = #DCE9BE;

void setup() {

  size(500, 500);
  background(bg);

  org_x = width/2;
  org_y = height/2;

  float theta = 0;

  while (theta < 360) {
    r = random(2, 4);
    theta += r;
    Thingie thingie = new Thingie(theta);
    thingies.add(thingie);
  }
}

void draw() {

  background(bg);

  for (int i=0; i<thingies.size();i++) {
    Thingie thing = (Thingie) thingies.get(i);
    thing.run();
  }

  if (frameCount % 4 == 0 && frameCount <241) saveFrame("image-###.gif");
}
class Thingie {
  float theta, t, x, y;

  Thingie(float _theta) {
    theta= _theta;
  }

  void run() {
    move();
    display();

  }

  void move() {
    x = org_x + sin(theta)*150;
    y = org_y + cos(theta)*150;
    t = map(cos(theta), -1, 1, 0.0523, 0.0523/4);
    //t = 0.0523/4;
    sw = map(sin(theta),-1,1,20,50);
    theta += t;
  }

  void display() {
    //stroke(s,50);
    strokeWeight(.5);
    fill(s,50);
    stroke(s);
    //noStroke();
    ellipse(x, y, sw, sw);
  }
}