let s = 0.0;

​

function setup() {

  createCanvas(720, 400);

  noStroke();

​

}

​

function draw() {

​

  background(135, 1, 25);

  push();

  translate(360, 200);

  rotate(frameCount / 100);

  scale(s);

  //white star

  fill(0);

​

  star(0, 200, 30, 70, 5);

  pop();

​

  a = a + 0.04;

  s = cos(a) * 2;

​

  translate(width / 2, height / 2);

  scale(s);

​

  fill(19, 121, 19, 201);

  star(0, 0, 30, 70, 5);

​

  translate(75, 0);

​

  fill(235, 187, 1, 200);

  scale(s);

  star(0, 0, 30, 70, 5);

​

  push();

​

  push();

  translate(360, 200);

  rotate(frameCount / -200.0);

  scale(s);

  //white star

  fill(0, 149, 183, 210);

​

  star(0, 200, 30, 70, 5);

  pop();

}

​

function star(x, y, radius1, radius2, npoints) {

  let angle = TWO_PI / npoints;

  let halfAngle = angle / 2.0;

  beginShape();

  for (let a = 0; a < TWO_PI; a += angle) {

    let sx = x + cos(a) * radius2;

    let sy = y + sin(a) * radius2;

    vertex(sx, sy);

    sx = x + cos(a + halfAngle) * radius1;

    sy = y + sin(a + halfAngle) * radius1;

    vertex(sx, sy);

  }

  endShape(CLOSE);

}

​