Here's a little question I've been thinking about for awhile, having to do
with CSG and an added bounded_by shape.

Say I construct a CSG shape out of POV-Ray primitives--using merge,
difference or intersection-- that has a final visible shape (dimensions or
volume) of exactly
<-2, 0, -3> to <2,12,5>
and I want to add a bounding box to it.

Is is safe to use the exact same dimensions for the bounding box?  Or should
I use something like
<-2.0001,-.0001,-3.0001> to <2.0001, 12.0001,5.0001>
to take care of any possible floating-point inaccuracies? The POV docs seem
to indicate that it's not a problem, but I usually do it the latter way
because I just don't know. Do floating-point problems even occur with a
bounding shape?

Ken W.

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