function setup() {

  createCanvas(windowWidth,

               windowHeight);

  background(0, 250, 250);



  for (val = 2; val < windowWidth; val = val + 18) {

    strokeWeight(val / 4);

    point(val, height / 2);

  }

	

  for (val = 2; val < windowWidth; val = val + 18) {

    strokeWeight(val / 4);

    point(height/2, val);

  }

}