> High!
> 
> Blue Herring schrieb:
> 
<Snippage>
> 
> But how should that work if the objects are in different levels of a CSG
>  hierarchy - e. g. if the room is part of a difference, but the
> furniture in the room belongs to a union several levels higher (or even
> not at all to the same CSG object)?
> 
> See you in Khyberspace!
> 
> Yadgar
> 

I find the question odd, I have done several projects of my own with 
only a single point light, and a multi story, many room building 
differenced in CSG.  As long as I remembered where the light was, the 
angle it would hit the windows, the light seemed to reasonably mimic 
what the eye might see.  From what I've seen, a "difference" behaves 
like a physical hollowing, any openings will allow light in, if it's 
directed in.

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