void setup() {
  size(300,300);
  ellipseMode(CENTER_DIAMETER);
  framerate(10);
}

void loop() {
  background(200);  

  circle(100,100, 50);
  circle(200,150, 50);
  
  for(int i=0; i<10; i++)
    circle(random(width),random(height), random(50)+10);
}

void circle(float cx,float cy, float radius) {
  float x,y;

  for(int i=0; i<36; i++) {
    x=cos(radians(i*10))*radius+ cx;
    y=sin(radians(i*10))*radius+ cy;
    ellipse(x,y, 5,5);  
  }
}