​

function setup() {

  createCanvas(400, 400);

  drawSlashes();

}

​

function drawSlashes() {

  for (let gridX = 0; gridX < tileCount; gridX+=1) {

    for (let gridY = 0; gridY < tileCount; gridY+= 1) {

      let tileWidth = width/tileCount;

      let tileHeight = height/tileCount;

      let posX = gridX * (width/tileCount);

      let posY = gridY * (height/tileCount);

        let direction = int(random(2));

      if (direction === 0) {

        line(posX, posY + tileHeight, posX + tileWidth, posY);

      } else if (direction === 1) {

        line(posX, posY, posX + tileWidth, posY + tileHeight);

      }

    }

  }

}

​

function mousePressed() {

    background(255);

  drawSlashes();

}