createCanvas(400, 400);

  rectMode(CENTER)

  fill(255, 0, 0)

  noFill()

}

​

function draw() {

  background(255, 5)

​

  noFill()

  stroke(0)

  let a = 0.01

  push()

  translate(width / 2, height / 2)

  scale(sin(frameCount * 0.01) * 2)

  rotate(frameCount * a)

  rect(0, 0, 100, 100)

  pop()

​

  push()

  translate(width / 4 + width / 2, height / 2)

  rotate(frameCount * a / 2)

  //rect(0,0,100,100)

  pop()

}1

​

function mousePressed() {

​

}

​

function mouseReleased() {

  background(random(0, 255))

}

​

​

function keyPressed() {

  if (key === '1') {

    background(255,0,0)

    enterFullscreen()

  } else if (key === '2') {

    background(255,255,0)

  }

}

​

function enterFullscreen() {

  var fs = fullscreen();

  if (!fs) {

    fullscreen(true);

  }

}

​

/* full screening will change the size of the canvas */

function windowResized() {

  resizeCanvas(windowWidth, windowHeight);

}