// Draw clover leaves
 void setup() { // all sketch setup goes here
 size(400, 400);
 smooth();
 background(0);
 } // setup() 

void draw() {
   } // draw()

void mousePressed() {
   fill(0, random(100, 255), 0);
   noStroke();
   flower(mouseX, mouseY, random(80, 120));
   } // mousePressed()

void flower(float x, float y, float sz) {
   translate(x, y);
   clover(0, 0, sz/2);

 rotate(radians(90));
   clover(0, 0, sz/2);

 rotate(radians(90));
   clover(0, 0, sz/2);

 rotate(radians(90));
   clover(0, 0, sz/2);
   } // flower()

void clover(float x, float y, float sz) {

 beginShape();
   curveVertex(x, y);
   curveVertex(x, y);
   curveVertex(x+0.1*sz, y-0.5*sz);
   curveVertex(x+0.5*sz, y-sz);
   curveVertex(x+sz, y-0.5*sz);
   curveVertex(x+0.5*sz, y-0.1*sz);
   curveVertex(x, y);
   curveVertex(x, y);
   endShape(CLOSE);
   } // clover