var diameter;



function setup() {

  createCanvas(windowWidth,

               windowHeight);



  diameter = 150;

  noStroke();

  fill(250, 100, 100, 20);

}



function draw() {

  background(234, 234, 234);



  translate(width / 2, height / 2);

  for (var i = 0; i < TWO_PI; i += 0.1) {

    var x = diameter * cos(i);

    var y = diameter * sin(i);



    ellipse(x, y, 100);

  }

}