​

function setup() {

  createCanvas(400, 400);

  noLoop();

  rectMode(CENTER); // changes how squares / rects are drawn. it interprets x and y as the center.

}

​

function draw() {

  background(220);

  for (let y = 0; y < height; y += 40) {

    for (let x = 0; x < width; x += 40) {

      let xOffset = random(-displacement, displacement);

      let yOffset = random(-displacement, displacement);

      for (let i = 0; i < 5; i++) {

        square(x + xOffset, y + yOffset, 40 - i * 10);

      }

    }

  }

}

​