function setup() {

    createCanvas(400, 400);

    colorMode(HSB);

    frameRate(120);

    //setting angle mode to degrees 

    //to aid in positioning of circles

    angleMode(DEGREES);

  }

  function draw() {

    background (0)

    noStroke();

    //loop steps through 36 times drawing 

    //a circle with a separate hue each time

    translate(320,320)

    for (let i = 0;i<36;i++){

      rotate(a)

    //determines position of circles

      x = 200 + 100*cos(i*10);

      y = 200 + 100*sin(i*10);

      fill(i*10,100,100);

      circle(x,y,50);

      a += 0.005

    }

  }

function mousePressed() {

  saveGif('mySketch.gif', 10)

}

​