float angle = 0.0;
float a = 0.05;
float b = 200;
float c = 82;

void setup() {
  size(500,500);
  noStroke();
  smooth();
}

void draw() {
  background(255);
  fill(0);
  float x = b+cos(angle)*c;
  float y = b+sin(angle)*c;
  ellipse(x,y,50,50);
  fill(215,255,0);
  float x1 = x+cos(angle)*c/2;
  float y1 = y+sin(angle);
  ellipse(x1,y1,20,20);
  fill(130);
  float x2 = x1+cos(angle);
  float y2 = y1+sin(angle);
  ellipse(y2,x2,30,30);
  angle += a;
}