On Fri, 1 Jun 2001 16:32:23 +0200, Nekar Xenos wrote:
>Here's the answer I got when I asked a similar question some time ago:
>
>
>> If anyone knows the Equations for NURBS, I'd be very grateful.
>
>NURBS = Non Uniform Rational B-Splines, aka Bezier Patches, Bicubic Patches,
>etc.  It's all the same stuff.

Not really.  Bezier patches/bicubic patches are neither non-uniform nor
rational.

-- 
#macro R(L P)sphere{L F}cylinder{L P F}#end#macro P(V)merge{R(z+a z)R(-z a-z)R(a
-z-z-z a+z)torus{1F clipped_by{plane{a 0}}}translate V}#end#macro Z(a F T)merge{
P(z+a)P(z-a)R(-z-z-x a)pigment{rgbt 1}hollow interior{media{emission T}}finish{
reflection.1}}#end Z(-x-x.2y)Z(-x-x.4x)camera{location z*-10rotate x*90}

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