​

function preload() {

  img = loadImage('alberta.jpg');

}

​

function setup() {

  createCanvas(800, 800);

}

​

function draw() {

  var tileCountX = mouseX /2;

  var tileCountY = mouseY /100;

  var stepX = width / tileCountX;

  var stepY = height / tileCountY;

  for (var gridY = 0; gridY < height; gridY += stepY) {

    for (var gridX = 0; gridX < width; gridX += stepX) {

      image(img, gridX*2, gridY, stepX, stepY);

    }

  }

}

​

​