In article <39e1a990@news.povray.org>, Warp <war### [at] tagpovrayorg> 
wrote:

>   It's not the same thing.
>   Well, it is for convex objects but not every object.

Maybe true...on the other hand, the user might *expect* the results to 
be the same as using partial transparency, with darker areas where the 
object overlaps itself more times. In other words, a pair of cubes with 
"shadows 0.5" should probably look the same as a union of the same cubes 
with "shadows 0.5"...which would probably be impossible or difficult to 
implement and very confusing to use otherwise...should light passing 
through two objects with "shadows 0.5" be attenuated to 0.25 or 0.5 of 
it's original? What if the objects have "shadows 0.2" and "shadows 0.6"?

-- 
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/

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