random(random(...))

function setup() {

  createCanvas(w=850, 850);

  colorMode(HSB,360,100,100,100);

  background(90);

  noLoop();

  textSize(16);

  textAlign(CENTER);

}

​

function random_k(k) {

  let tmp = random();

  for(let i=0;i<k;i++)

    tmp = random(tmp);

  return tmp

}

​

function draw() {

  let d = 150;

  let labels = ['rand()','rand(rand())','rand(rand(rand()))','rand(rand(rand(rand())))'];

  push();

  for(let ix=0;ix<4;ix++) {

    for(let iy=0;iy<4;iy++) {

      push();

      translate(40+200*ix,40+200*iy);

      for (let i = 0; i < 1e+4; i++) {

        let x = d * random_k(ix)

        let y = d * random_k(iy);

        point(x,y);

      }

      pop();

    }

  }

  for(let ix=0;ix<4;ix++) {

    push();

    textSize(16);

    textAlign(LEFT);

    translate(40+200*ix,20);

    text(labels[ix],0,0);

    pop();

    push();

    textSize(16);

    textAlign(LEFT);

    translate(10,40+200*ix);

    rotate(radians(90))

    text(labels[ix],0,0);

    pop();

  }

​

}

​

function keyPressed() { if (keyCode == ENTER) { save('screenshot.png'); } }