let bookWidth;

let bookSpace = 100;

let y = 250;

​

function setup() {

  colorMode(HSB);

  createCanvas(700, 700);

  let bg = random(0, 250);

  background(bg, 10, bg);

  strokeCap(PROJECT);

​

}

​

function draw() {

​

  let hue = random(0, 50);

  let sat = random(0, 50);

  fill(hue, sat, 100);

  strokeWeight(1);

  stroke(30);

​

  bookHeight = random(100, 130);

  bookWidth = random(10, 30);

  rect(bookSpace, y - bookHeight, bookWidth, bookHeight, 3);

  bookSpace = bookSpace + bookWidth;

​

  push();

  strokeWeight(5);

  line(80, y, 620, y);

  pop();

​

  if (bookSpace > 590) {

    bookSpace = 100;

    y = y + 160;

  }

  if (y > 600) {

    noLoop();

  }

​

}