protected override Color calculateColorPerLight(Ray ray, HitData hitPoint, ILight light, bool isCovered)
{
Vector3 incomingLightDirection = Vector3.Normalize(hitPoint.Position - light.Position);
Color lightIntensity = (float)(1 / Math.Pow(Vector3.Distance(hitPoint.Position, light.Position), 2)) * light.GetIntensity(incomingLightDirection);
Color ambient = lightIntensity * hitPoint.Material.Ambient(hitPoint.TextureCoords);
Color diffuse = Color.Black;
Color specular = Color.Black;
if (!isCovered || !Settings.CastShadows)
{
diffuse = lightIntensity
* Math.Max(hitPoint.Normal * (-1 * incomingLightDirection), 0)
* hitPoint.Material.Diffuse(hitPoint.TextureCoords);
specular = lightIntensity
* hitPoint.Material.Specular(hitPoint.TextureCoords)
* (float)Math.Pow(-1 * CurrentScene.MainCamera.ViewDirection * incomingLightDirection.Reflect(hitPoint.Normal), PhongExponent);
}
Color lightInflux = diffuse + ambient + specular;
Color color = hitPoint.Material.Color(hitPoint.TextureCoords);
return(new Color(Math.Min(lightInflux.r, color.r), Math.Min(lightInflux.g, color.g), Math.Min(lightInflux.b, color.b)));
}