On Thu, 23 Mar 2000 21:23:02 -0000, Tom Melly wrote:
>With the following difference object, should I set my own bounded_by or will
>POV bound the object to the box? I'm using megapov, but if there is a
>difference I would be curious to know the answer for both standard and mega.

An intersection takes the intersection of the bounding boxes of all of the
included objects (where they exist; see the recent discussion of intersecting
with a plane.)  It ignores objects that are inverted.  Difference is stored
internally as an intersection with inverses.  Thus, most differences are 
bounded by the bounding box of the first object in the difference (This does
not apply to differences that include inverted objects.)

Thus, your difference is bounded by the box and the spheres are ignored.  If
you can bound it more accurately, you should.

-- 
These are my opinions.  I do NOT speak for the POV-Team.
The superpatch: http://www2.fwi.com/~parkerr/superpatch/
My other stuff: http://www2.fwi.com/~parkerr/traces.html

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