I'm considering doing something like that.  I was going to run a trace() 
from each facet to the box making the room, but I was going to create 
the dots on the floor and walls using point lights, though I'm sure 
using polygons is much faster.

Slime wrote:

> Nice.
> 
> A while ago I did something similar, but instead of relying on photons
> (which have the problem you mention with large numbers of facets), I
> manually calculated the shapes of the reflected rays. The beams of light are
> meshes filled with media, and the lights on the floor are actually polygons.
> 
>  - Slime
>  [ http://www.slimeland.com/ ]
> 
> 
>

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