​

function setup() {

  createCanvas(windowWidth, windowHeight);

  noStroke();

  noLoop();

}

​

function draw() {

  background(220, 20, 120);

​

  for (let x = gridW / 2; x < width + gridW; x += gridW) {

    for (let y = gridW / 2; y < height + gridW; y += gridW) {

​

      let eDiam = random(0.2 * gridW, 0.8 * gridW);

      ellipse(x, y, eDiam, eDiam);

    }

  }

}

​