I see... The bounding object feature would still offer more ease of use in all
kinds of collision detection applications; but since this can also be done in
POV script without any significant disadvantage, I won't whine if it isn't
implemented in the source.
Btw. I think there might be some advantages to using light ray bounding, for
example with light attenuation and radiosity... Not sure, though.

Margus

Ron Parker wrote:
> 
> The way POV works is to first find all intersections, then find the closest
> one (except in certain cases like isosurfaces and some other objects.)  The
> existing code doesn't have a concept of bounding a ray, because there is no
> use for such a thing in tracing light rays.  What you're asking for can't be
> done any more efficiently in C than it can in POV script, except for certain
> objects that could be optimized with much labor.

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