void setup() {
  size(200, 200);
}

void draw() {
  background(255);
  stroke(0);
  fill(175);

  translate(width/2, height/2);

  float theta = map(mouseX, 0, width, 0, TWO_PI); 
  rotate(theta);

  rectMode(CENTER);
  rect(0, 0, 100, 100);
  fill(50,10);
int x = floor( random( 40 ) );
int y = floor( random( 40));
int R = floor( random( 50 ) );
  ellipse(x,y,R,R);
 fill(20,600);
 x = floor( random( 40 ) );
 y = floor( random( 40));
 R = floor( random( 50 ) );
  ellipse(x,y,R,R);
  fill(10,80);
  x = floor( random( 40 ) );
 y = floor( random( 40));
 R = floor( random( 50 ) );
  ellipse(x,y,R,R);
  delay(200);
}