public override Vector3 Area_Light_Shade(ShadeRec sr)
{
Vector3 L = (base.Area_Light_Shade(sr));
Vector3 wo = (-sr.Ray.Direction);
Vector3 wi = Vector3.Zero();
float pdf = 0;
Vector3 fr = (glossy_specular.Sample_F(sr, wo, ref wi, ref pdf));
Ray reflected_ray = new Ray(sr.HitPoint, wi);
L += fr * sr.World.Tracer.TraceRay(reflected_ray, sr.Depth + 1) * (Vector3.Dot(sr.Normal, wi)) / pdf;
return(L);
}
