createCanvas(windowWidth, windowHeight);

  noLoop();

}

​

function draw() {

  background(220);

  translate(width / 2, height / 2);

​

  noFill();

  strokeWeight(4);

  stroke(255, 0, 50);

​

  let maxRadius = min(width / 2, height / 2);

​

  beginShape();

  for (let a = 0; a < 360; a += 1) {

    let t = radians(a);

    let k = exp(cos(t)) - 2 * cos(4 * t);

​

    let x = (maxRadius / 4) * sin(t) * k;

    let y = (maxRadius / 4) * cos(t) * k;

    vertex(x, y);

  }

  endShape(CLOSE);

}

​