TracedRay trace_ray(Surface surface, TraceIntensityMode m,
RayTraceResults result, TracedRay incident,
Vector3Pair local,
Vector3Pair pt)
{
incident.set_len((pt.origin().minus(local.origin())).len());
incident.set_intercept(surface, pt.origin());
if (m == TraceIntensityMode.Simpletrace)
{
incident.set_intercept_intensity(1.0);
return(trace_ray_simple(surface, result, incident, local, pt));
}
else
{
// apply absorbtion from current material
double i_intensity
= incident.get_intensity()
* incident.get_material().get_internal_transmittance(
incident.get_wavelen(), incident.get_len());
incident.set_intercept_intensity(i_intensity);
// FIXME
// if (i_intensity < _discard_intensity)
// return;
if (m == TraceIntensityMode.Intensitytrace)
{
return(trace_ray_intensity(surface, result, incident, local, pt));
}
else if (m == TraceIntensityMode.Polarizedtrace)
{
return(trace_ray_polarized(surface, result, incident, local, pt));
}
else
{
throw new InvalidOperationException();
}
}
}