clipka wrote:
> I guess that will depend on user feedback. Implementation of such a flag 
> should be no big deal, but I currently don't see what it would be good 
> for; it would also open up the question how the flag should actually 
> work: For instance, should it affect only interaction with photons 
> /before/ the target, or also /after/ the target?

I would imagine a no_photons would just make the object not there as far 
as photon calculation is concerned.  The correction noted for 
pass_through for photons doesn't really make much sense to be called 
pass_through, though, if the photons are still being affected by the object.

--
Tim Cook
http://empyrean.freesitespace.net

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