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);

  let A = maxRadius;

  let B = 0.5 * maxRadius;

  let alphaVal = 3;

  let betaVal = 7;

  let deltaVal = 20;

​

  beginShape();

  for (let a = 0; a < 360; a += 1) {

    let x = A * cos(radians(alphaVal * a + deltaVal));

    let y = B * sin(radians(betaVal * a));

    vertex(x, y);

  }

  endShape(CLOSE);

}

​