​

function setup () {

  createCanvas(windowWidth, windowHeight);

  noLoop();

  let rectangleCount = 30;

  for (let i = 0; i < rectangleCount; i++) {

    let shrink = 0.5;

    let position = [

      random(-1, 1) * shrink,

      random(-1, 1) * shrink

    ];

    let scale = random(0.5, 1);

    let size = [

      random(0, 1) * scale,

      random(0, 1) * scale

    ];

    rectangles.push({

      position,

      size

    });

  }

}

​

function draw(){

  background(200);

  strokeJoin(MITER);

  rectMode(CENTER);

  noFill();

  stroke(0);

​

  let size = height/2

  for( r of rectangles) {

    let [ x, y ] = r.position;

    let [ w, h ] = r.size;

    push();

    translate(width / 2, height / 2);

    scale(size, size);

    strokeWeight(0.008);

    rect(x, y, w, h);

    pop();

  }

}

​

function windowResized () {

  resizeCanvas(windowWidth, windowHeight);

}