function setup() {

  createCanvas(400, 400);

  noLoop() // Looks cool also

  strokeWeight(2)

}

​

function draw() {

  background(240);

  rotate(100)

  translate(-200, 0)

  for (let y = 0; y < height * 2; y += map(y, 0, height * 2, 1, 5)) {

    for (let x = 0; x < width * 2;) {

      const long = random(1, map(y, 0, height * 2, 1, width))

      random(1) > 0.5 ? stroke(0) : stroke(240)

      line(x, y, x + long, y)

      x += long

    }

  }

}