Bouncing line

function setup() {

  createCanvas(windowWidth, windowHeight);

  background(0);

  p1 = createPointXY();

  p2 = createPointXY();

}

let increment = 10;

function draw() {

  for (let x1 = p1.x; x1 < windowWidth; x1 += increment) {

    for (let x2 = p2.x; x2 < windowWidth; x2 += increment) {

      stroke(255);

      line(x1, p1.y, x2, p2.y);

​

    }

  }

}

​

function createPointXY() {

  return {

    x: random(windowWidth),

    y: random(windowHeight)

  }

}