/// <summary>
/// Metoda pro vypocet okolniho procenta
/// </summary>
/// <param name="point">Vector umisteni</param>
/// <param name="normal">Vector normal</param>
/// <returns></returns>
private double AmbientPercent(Vector point, Vector normal)
{
int unoccludedRays = 0;
for (int n = 0; n < lightSamples; ++n)
{
Vector hemisphereDir = Vector.RandomHemisphereDirection(normal);
Ray hemisphereRay = new Ray(point, hemisphereDir, Ray.InitialDepth);
Intersection currentTry = this.NearestShape(hemisphereRay);
if (currentTry.T == Intersection.MaxT)
{
++unoccludedRays;
}
}
return(((double)unoccludedRays / lightSamples) * AmbientLight);
}