* Demo of the random() function.

 * Choose an x position using the random function.

 * Draw a transparent stroke each time at that location.

 * You should see strokes randomly spread across the page. 

 *

 * Jared Donovan 2018

 */

function setup(){

  createCanvas(700, 100);

  background(255);

  stroke(0, 20);

}

​

function draw(){

  // Choose a random x position somewhere between 0..width

  let x = random(width);

  // Draw a line at x. Over time, lines will build up. Evenly spread across the page. 

  line(x, 0, x, height);    

}

​

function keyPressed(){

  saveCanvas("random_demo-screenshot.png");

}