BTW, I included a certain amount of "offset" in my translating, like the
example of the tiled surface in the section of doc about
superquadric-ellipsoids...
--LibraryMan

LibraryMan wrote:
> 
> I have an object which I created two versions of, which look quite
> similar.  I had read somewhere on this group that in general, CSG
> difference takes more time to trace than union.  But when I rendered the
> two "versions" of the object in question ( a section of arcade from yet
> another Gothic cathedral scene) the version with lots of difference's
> rendered faster than the version that was all unioning and translating.
> 
> To clarify:
> Version 1 was a single large box object with a stone texture, and lots
> of long narrow cylinders differenced from the visible surface to
> simulate the look of the wall being built from individual blocks of
> stone, like so:
> 
> _________________
> |___|___|___|___
> __|___|___|___|__
> |___|___|___|___
> __|___|___|___|__
> |___|___|___|___   etc.
> 
> Version two was built from iterations of the actual individual block of
> stone, translated to achieve the "staggered" look.
> 
> Why might this have happened? It seems contrary to my initial assumption
> (which admittedly might have been in error...)
> 
> Any thoughts?
> 
> Thanks,
> "Library Man"

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