let r, g, b;

​

function setup() {

  createCanvas(600, 500);

}

​

function draw() {

  background(10, 10);  // alpha for fade

  lineCircle(count, 0, 255, 255);

  lineCircle(count + 1, 100, 50, 255);

  count += 0.0125;

}

​

function lineCircle(count, r, g, b) {

  stroke(r, g, b);

  strokeWeight(2);

  angleMode(DEGREES);

  let radius = 200;

  let step = 10;

  for(let angle = 0; angle <= 360; angle+=step){

    let x = -radius * cos(angle);

    let y = radius * sin(angle);

    let x1 = -radius * cos(angle + count + 2 * step);

    let y1 = radius * sin(angle + count * 5 * step);

​

    line(sin(300 + x), 250 - y, 300 + x1, 250 - y1);

  }

}