createCanvas(690, 1000);

  background(240);

  rows = 22;

  cols = 12;

  startx = 50;

  starty = 50;

  boxdim = 40;

  variation = -2;

  offset = 0;

  noFill();

  for (row = 0; row < rows; row++) {

    variation += 2;

    offset += 1;

    for (col = 0; col < cols; col++) {

      push();

      rectMode(CENTER);

      translate(startx + col*boxdim, starty + row*boxdim);

      rotate(radians(random(-1*variation, variation)));

      rect(0 + random(0, offset), 0 + random(0, offset), boxdim, boxdim);

      pop();

    }

  }

}

​

function draw() {

​

}