In article <3922881f@news.povray.org>, Warp <war### [at] tagpovrayorg> 
wrote:

>   Btw, how does it work with merged objects? And what about differences?

It uses the ray direction and the raw, un-flipped normal of the surface 
to tell between the sides, so merges should work fine. I don't know 
about differences though, they may not flip the normal properly(I seem 
to remember a discussion about this a while ago).
And before you ask, it should work fine with triangles and other plane 
primitives, since they have two separate sides, but I don't know about 
bezier patches.

-- 
Christopher James Huff - Personal e-mail: chr### [at] yahoocom
TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
Personal Web page: http://chrishuff.dhs.org/
TAG Web page: http://tag.povray.org/

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