createCanvas(400, 400);

    fill(0);

    /* if you're on a Mac with a retina screen, 

     * pixel density is 2 and then this library

     * generates a gif at TWICE the size your canvas is

     * so we preemptively set it 1 for all systems

     */

    pixelDensity(1);

    createLoop({duration:2, gif:true});

}

​

function draw() {

    background(255);

    const radius = height / 3;

      /* animLoop is a nice object that has looping-friendly variables

     * animLoop.noise() returns a noise value between -1 and 1

     */

    const x = animLoop.noise() * radius;

    text(x, 10, 20);

    ellipse(x + width/2, height/2, 50, 50);

}