// http://codingtra.in

// http://patreon.com/codingtrain

​

// 10PRINT

// https://www.youtube.com/watch?v=bEyTZ5ZZxZs

​

let x = 0;

let y = 0;

let spacing = 20;

​

function setup() {

  createCanvas(1000, 1000);

  background(0);

}

​

function draw() {

  stroke(255);

  if (random(1) < 0.5) {

    line(x, y, x + spacing, y + spacing);

  } else {

    line(x, y + spacing, x + spacing, y);

  }

  x = x + spacing;

  if (x > width) {

    x = 0;

    y = y + spacing;

  }

​

}