let angles = []; //our angles here represent the x-positions

let r = 5;

​

function setup() {

  createCanvas(400, 400);

  total = floor(width / (r * 2));

  for (let i = 0; i < total; i++) {

    angles[i] = map(i, 0, total, 0, TWO_PI);

  }

}

​

function draw() {

  background(0);

  translate(200, 200);

  stroke(255);

  // fill(252, 0, 200);

  noFill();

  beginShape();

  for (let i = 0; i < total; i++) {

    let y = map(sin(angles[i]), -0.1, 1, -100, 200);

    let x = map(i, 0, total, -i, i);

    // circle(x, y, r*2); //circle takes diameter

    // line(x,0,x,y);

    vertex(x, y);

    endShape();

​

      let increment = TWO_PI/160;

      angles[i]+=increment;

  }

}

​