void setup(){
  size(500, 500);
  background(255);
  smooth();
  noStroke();
}

void draw(){
}

void mousePressed() {
  flower(mouseX, mouseY, int(random(10, 50)));
}


//draw a flower centered at centerX and centerY with n petals
void flower(int centerX, int centerY, int n){
  int size = int(random(15, 30));     // size of petals (circles)
  float angle = 2*PI/n;  
  for (int i=0; i<n; i++) {
    fill(random(0, 255), 0, 0, 50);
    ellipse(centerX+size*cos(angle*i), centerY+size*sin(angle*i), size, size);
  }
}