g,

  toggleImageToDraw = false;

​

function preload() {

  img = loadImage('potrait.png');

}

​

function setup() {

  createCanvas(1000, 500);

  g = createGraphics(500, 500);

  setInterval(_ => {

    toggleImageToDraw = !toggleImageToDraw;

  }, 10000);

}

​

​

function draw() {

  let x1 = random(0, 300);

  let y1 = random(0, height);

​

  let x2 = x1 + 500;

  let w = 200;

  let h = height / 100;

​

  if (!toggleImageToDraw) {

    g.set(x1, y1, img.get(x2, y1, w, h));

  } else {

    g.set(x1, y1, img.get(x1, y1, w, h));

  }

​

  image(g, 0, 0);

}