jluserov_generativedesign/libro06_lineasdeoscurasablancas/libro06_lineasdeoscurasablancas.pde
void setup() {
  size(500, 300);
  background(180);
  strokeWeight(4);
  strokeCap(SQUARE);
  for (int h = 10; h <= (height - 15); h+=10) {
    stroke(0, 255-h);
    line(10, h, width - 20, h);
    stroke(255, h);
    line(10, h+4, width - 20, h+4);
    }
}
