public override Spectrum SampleL(Point p, double pEpsilon, LightSample ls, double time, ref Vector wi, ref double pdf, ref VisibilityTester visibility)
{
wi = new Vector (LightDir);
pdf = 1.0;
visibility.SetRay (p, pEpsilon, wi, time);
return L;
}
public override Spectrum SampleL(Point p, double pEpsilon, LightSample ls, double time, ref Vector wi, ref double pdf, ref VisibilityTester visibility)
{
Normal ns = new Normal ();
Point ps = ShapeSet.Sample (p, ls, ref ns);
wi = (ps - p).Normalized;
pdf = ShapeSet.Pdf (p, wi);
visibility.SetSegment (p, pEpsilon, ps, 0.001, time);
Spectrum Ls = L (ps, ns, -wi);
return Ls;
}
public abstract Spectrum SampleL(Point p, double pEpsilon, LightSample ls, double time, ref Vector wi, ref double pdf, ref VisibilityTester visibility);
