​

 function setup() {

   createCanvas(windowWidth, windowHeight);

​

   stroke(255, 255);

   strokeWeight(.01);

   fill(120, 200, 200, 64);

 }

​

 function draw() {

   background(0);

     translate(width / 2, height/2);

   rotate(PI / 2);

   //scale(map(mouseX, 0, width, 0.2, 25));

   scale(1.25);

   drawCircle(0, 0, 200);

   o += 0.005;

   if(o>4) o = 2;

 }

​

 function drawCircle(x, y, d) {

   ellipse(x, y, d, d);

   if (d > 10) {

     drawCircle(x + d / (2), y, d / 2);

     drawCircle(x - d / (0+o), y, d / 2);

     drawCircle(x, y + d / (0+o), d / 2);

     drawCircle(x, y - d / (0+o), d / 2);

   }

 }