function setup() {

  createCanvas(800, 800, WEBGL);

  hw = width / 2;

  hh = height / 2;

​

  w3 = width / 3;

  h3 = height / 3;

​

  t = [0, -h3, w3, h3, -w3, h3];

​

  frameRate(30);

}

​

let theta = 0;

​

function draw() {

  fill(color(20,20,20,30));

  noStroke();

  rect(-hw,-hh,width,height);

  push();

  let x = 50 * cos(theta*16);

  let y = 50 * sin(theta*16);

  translate(x,y);

  noFill();

  stroke(color(220));

  rotate(theta);

  theta += PI / 1024;

​

  triangle(t[0], t[1], t[2], t[3], t[4], t[5]);

  for (let _ = 0; _ < 25; _++) {

    triangle(t[0], t[1], t[2], t[3], t[4], t[5]);

    rotate(theta + PI / 1024);

  }

​

  pop();

}

​