createCanvas(1000, 1000);

}

​

function draw() {

  background(250);

  frameRate(60);

  fill(0);

  stroke(250);

  strokeWeight(1);

  let offx = 0.03 * sin(frameCount / 50);

  let offy = 0.03 * sin(frameCount / 50);

  for (let i = 0; i < 600; i++) {

    circle(

      500 + 200 * sin(i * (0.06 + offx)),

      500 + 100 * cos(i * (0.07 + offx)),

      50

    );

  } 

}

// you can put it in the mousePressed function,

// or keyPressed for example

function keyPressed() {

  // this will download the first 5 seconds of the animation!

  if (key === 's') {

    saveGif('mySketch', 5);

  }

}