let d=0;

let sliderN;

let sliderD;

let k=0;

let sliderTheta;

​

function setup() {

  createCanvas(400, 400);

  background(50);

  sliderN = createSlider(1,10,5,1);

  sliderD = createSlider(1,10,8,1);

  sliderTheta = createSlider(0.01,1,0.1,0.1);

​

}

​

function draw() {

  background(220);

  translate(width/2, height/2);

  n = sliderN.value();

  d = sliderD.value();

  k = n/d;

  beginShape();

  stroke(100);

  strokeWeight(2);

  for(var theta=0; theta<TWO_PI*d; theta+=sliderTheta.value()){

    let r = 200*cos(k*theta);

    let x = r* cos(theta);

    let y = r* sin(theta);

    vertex(x,y);

  }

  endShape(CLOSE);

  console.log(n,d);

}