>>  Then, in theory, it could be possible to attach a light source to
>>each of the cameras in the clockless animation mode?
> 
> 
> technically yes, but we lose the benefits of bounding then (i.e. the light
> would have to be placed into the list of infinite objects). either that, or
> some sort of manipulation of bounding information would need to occur each
> time the camera moved outside of its previous bounding volume.
> 
> that said, though, if we say that the light is always at the eye point, we
> could take advantage of the fact that we are already tracing a ray from that
> point out into the scene, and thus anything that the primary ray intersects
> then is by definition visible to the light source - meaning we don't need to
> test it separately.

Ah, the joys of programming... features that sound easy sometimes 
aren't. And features that sound hard are sometimes easy... ;-)

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