> Personally, I'd suggest option two as the most useful feature even
> though it's not directly NURBS related - then if you want brep to do
> something intelligent with a cline, you could have cline's brep
> routine call the cline->pipe routine first and then pipe->brep using
> the results.
That sounds like a good idea. But I wonder how we can represent the cline
primitive with pipe? As mentioned above, the raytrace of cline is view
dependent, but pipe is not. I still cannot imagine what the shape of cline
should really be on earth.
Cheers!
Wu
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