var weight = 200;

var baseWeight = 2;

​

function setup() {

  colorMode(HSL);

  createCanvas(400, 400);

  background(0, 0, 96);

}

​

function draw() {

  strokeWeight(baseWeight + weight / frameCount);

  stroke((frameCount / slowdown * 10) % 360, 50 + sin(frameCount / slowdown * 10) * 10, 50);

  line(...getPoints(frameCount-1), ...getPoints(frameCount));

}

​

function getPoints(t) {

  t /= slowdown;

  return [cos(t) * width/2/t + width/2, sin(t) * height/2/t + height/2]

}

​