Chris Huff <chr### [at] maccom> wrote:

> In article <3a9697c2@news.povray.org>, Geoff Wedig 
> <wed### [at] darwinepbicwruedu> wrote:

>> So with a portal object and the pass through, I could get such a 
>> light, but that would only cast one way, and I'm not sure about the 
>> effects on radiosity.

> Portal objects are all one-way...to get a 2-way effect you would need 2 
> portal objects, one for each end, and more copies of light sources with 
> pass_through set up for the second portal.

Maybe I'm missing something.  I did a search on the Pov docs and didn't find
any reference for pass_through.  I looked at the Megapov docs and only found
it for photons.  Can you do a pass through with normal light_sources?  If
so, I think I might have figured a way to make this image much easier, and
faster.

Geoff

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