​

function windowResized() {

  if (fullscreen()) {

    resizeCanvas(windowWidth, windowHeight);

  } else {

    resizeCanvas(400, 400);

  }

}

​

function keyPressed() {

  if (mouseX > 0 && mouseX < width && mouseY > 0 && mouseY < height) {

    if (key === "f") {

      let fs = fullscreen();

      fullscreen(!fs);

​

    }

  }

}

​

class Star {

  constructor() {

    let w = width;

    let h = height;

    this.x = random(-w/2, w/2);

    this.y = random(-h/2, h/2);

    this.z = random(w);

    this.px;

    this.py;

  }

​

  update() {

    this.z-=4

​

    if (this.z < 1) {

      this.z = width;   

      this.x = random(-width/2, width/2);

      this.y = random(-height/2, height/2);

    }

  }

​

  show() {

    stroke(255);

    this.r = map(this.z, 0, width, 8, 1)    

    strokeWeight(this.r);

    this.sx = map((this.x / this.z), 0, 1, 0, width)

    this.sy = map((this.y / this.z), 0, 1, 0, height)

    point(this.sx, this.sy);

    this.px = this.sx;

    this.py = this.sy

  }

}

​

function setup() {

  createCanvas(400, 400);

​

​

  for (let i = 0; i < 600; i++) {

    Stars.push(new Star());

  }

​

}

​

function draw() {

  translate(width/2, height/2)

  background(20);

  for (let s = 0; s < Stars.length; s++) {

    Stars[s].update();

    Stars[s].show();

  }

  print(Stars.length);

}

​