createCanvas(windowWidth, windowHeight);

}

​

function draw() {

  background(0);

  translate(width / 2, height / 2);

  noStroke();

  fill(150, 0, 100,120);

  beginShape();

  for (let a = 0; a < TWO_PI; a += 0.1) {

    const r = 5;

    const x = r * 16 * pow(sin(a), 3);

    const y = -r * (13 * cos(a) - 5 * cos(2 * a) - 2 * cos(3 * a) - cos(4 * a));

​

    vertex(x, y);

  }

  endShape();

}