In article <3ea07c18$1@news.povray.org>,
 Simon Adameit <sim### [at] gaussschule-bsde> wrote:

> > No, here you are wrong.  It simply happens that CSG is harder to do if you
> > don't use plain ray-tracing.  
> 
> I think even if people used plain raytracing, they wouldn't use CSG as 
> their primary modelling method.

Most modellers use polygon representations to provide a real-time 
preview of the scene, and faster but lower quality scanline rendering, 
so of course when they raytrace they use the same data. Primitive CSG is 
generally faster and uses less memory, but it requires primitives that 
are harder to preview and scanline render, you generally have to 
tesselate them first. If they used pure raytracing, they would use CSG 
of primitives unless meshes were absolutely necessary, it would be the 
most efficient way to do the job.

-- 
Christopher James Huff <cja### [at] earthlinknet>
http://home.earthlink.net/~cjameshuff/
POV-Ray TAG: chr### [at] tagpovrayorg
http://tag.povray.org/

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