​

​

function setup() {

  createCanvas(400, 400);

  rectMode(CENTER);

}

​

function draw() {

  background(0);

​

  if (toggle === 1) {

    circle(width / 2, height / 2, 100);

  } else if (toggle === 2)

    rect(width / 2, height / 2, 100);

}

​

function keyPressed() {

  if (keyCode === LEFT_ARROW) {

    toggle = 1;

  } else if (keyCode === RIGHT_ARROW) {

    toggle = 2;

  }

  //console.log(toggle);

}

​

​