let spacing = 100;

let offScreen = 200;

let gap = 60; //gap for starting point

let step = 0;

let speedy = 1;

let x = new Array(n);

let x2 = new Array(n);

let y2 = new Array(n);

​

function setup() {

  createCanvas(1000, 1000);

  n = width;

​

  stroke(251, 148, 231);

​

  for (i = 0; i < n; i = i + spacing) {

    x[i] = random(-1 * (width + offScreen), width + offScreen);

    x2[i] = random(width / 2 - gap, width / 2 + gap);

    //y2[i] = random(200-gap, 200+gap);

  }

}

​

function draw() {

  background(0);

​

  for (i = 0; i < n; i = i + spacing) {

    if (x[i] + step * speedy < width) {

      line(x[i] + (step * speedy), i, i, i);

    } else {

      line(x[i] + (step * -speedy), i, i, i);

    }

  }

​

  step++;

}

​