public Color Lighting(PointLight light, Tuple point, Tuple eye, Tuple normal, bool isShadowed, Color color)
 {
     return(Color.Black); // TODO
 }
        public Color Lighting(PointLight light, Tuple point, Tuple eye, Tuple normal, bool isShadowed)
        {
            var color = Pattern.GetColor(point);

            return(Lighting(light, point, eye, normal, isShadowed, color));
        }