var densX = 40

var densY = 1.2

var disp = 2

​

function setup() {

  createCanvas(600, 600);

  background(0);

​

  var diameter = 50

  var margin = diameter;

​

​

  for (var y = margin; y < width - margin; y *=densY){

    for (var x = margin; x < height - margin; x +=densX) {

      ellipse(random(x - disp, x + disp), random(y - disp, y + disp), diameter);

    }

  }

​

}

​