let fr = 1; //starting FPS

​

​

function setup() {

  createCanvas(400, 400);

  background(255);

  frameRate(fr/4);

  noStroke();

  fill(255,0,0);//couleur

  ellipse(100,100,90,90);

}

​

function draw() {

​

  var w = random(400);

  var h = random(400);

​

  ellipse(w,h,90,90);

}