let width, height;

​

function setup() {

  width = window.innerWidth;

  height = window.innerHeight;

  createCanvas(width, height, WEBGL);

  ortho();

}

​

function draw() {

  clear();

  translate(-width / 2 + (boxSize/2), -height / 2 + (boxSize/2), 0);

  background(255);

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

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

      push();

      translate(x, y);

      rotateX(10);

      rotateY(mouseX * 0.01);

      box(boxSize);

      pop();

    }

  }

}