public Tuple ColorAt(World w, Ray r, int remaining)
{
List <Intersection> intersections = w.Intersection(r);
Intersection intersection = Intersection.Hit(intersections);
if (intersection == null)
{
return(Tuple.Color(0, 0, 0));
}
Computation comps = new Computation(intersection, r, intersections);
return(ShadeHit(w, comps, remaining));
}
/// <summary>
/// Finds color value given a Ray and Scene
/// Use this method for outside calls to find color value.
/// </summary>
/// <param name="scene"></param>
/// <param name="ray"></param>
/// <returns></returns>
public Color ColorAt(Ray ray, int remaining = reflectionBounces)
{
Color resultColor = Color.Black;
Scene scene = this;
List <Intersection> intersections = scene.Intersections(ray);
Intersection hit = Intersection.Hit(intersections);
if (hit == null)
{
return(resultColor);
}
Computation comp = new Computation(hit, ray);
resultColor = ShadeHit(comp, remaining);
return(resultColor);
}
/// <summary>
/// Determines if a point is in shadow
/// Legacy. Will Remove. Doesn't pass object blocking light.
/// </summary>
/// <param name="point"></param>
/// <param name="light"></param>
/// <returns></returns>
public bool IsShadowed(Point point, Light light) // LEGACY
{
// this needs to work for every light in the scene
Scene scene = this;
Vector3 pointToLight = light.Position - point;
float distance = pointToLight.Magnitude();
Vector3 direction = pointToLight.Normalized();
Ray ray = new Ray(point, direction);
List <Intersection> intersects = scene.Intersections(ray);
Intersection hit = Intersection.Hit(intersects);
//Do we have a hit and is it within the distance to the light?
if (hit != null && hit.t < distance)
{
return(true);
}
else
{
return(false);
}
}