let r;

let factor = 0;

​

function setup() {

  createCanvas(800, 800);

  r = width / 2;

}

​

function draw() {

  background(255);

  translate(width / 2, height / 2);

  stroke(0);

  strokeWeight(1);

  noFill();

  circle(0, 0, r * 2);

  factor += 0.005;

​

  strokeWeight(1);

  for (let i = 0; i < totalPoints; i++) {

    const a = getVector(i);

    const b = getVector(i * factor);

    line(a.x, a.y, b.x, b.y);

  }

}

​

function getVector(i) {

  const angle = map(i % totalPoints, 0, totalPoints, 0, TWO_PI);

  return p5.Vector.fromAngle(angle + PI).mult(r);

}