Alan Kong wrote:

>   Hi, Nathan. It's been many years but I once did an impromptu comparison to
> see how much difference manual bounding could make on simple shapes or CSG
> objects.
> --
> Alan

  I have had signifigant success manualy bounding certain types of csg
operations. Particularly an object or group of objects created within
a loop and then a csg applied to the that or during the loop. I have
seen as much as a 50% increase in rendering times depending upon the
number of objects and how many are intersected by the csg'ing object.

 The photon patch also bennifits from manual bounding in certain situations
in both calculation times and for non internaly bound objects such as
polygons, quartics, quadrics, etc...

-- 
Ken Tyler
  
mailto://tylereng@pacbell.net
http://home.pacbell.net/tylereng/links.htm

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