Real Nurbs ? 2004-02-12 - By Andrew Paules
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No commercial 3D package that I'm aware of can keep NURBS intact through
it's entire pipeline - at some point NURBS get tesselated and converted to
Polygons. There are a few large effects houses that have created their own
propriatary renderers that render actual NURBS, but until this tech shows up
on store shelves, no consumer application has "real NURBS".
|andrew|
>From: RorrKonn <rorrkonn@(protected)>
>Reply-To: "TSML (trueSpace Mailing List)" <truespace@(protected)>
>To: truespace@(protected)
>Subject: Re: [TSML] Real Nurbs ?
>Date: Thu, 12 Feb 2004 18:36:18 -0500
>
>
>In TrueSpace you convert a Nurbed mesh to a Polygon to map it.
>LW you skin the Splines with Polygons, delete the Splines.so you end up
>with a Polygon mesh.
>So the Apps you don't convert the Nurbed mesh to a polygon to map it "
>you map the nurb mesh " is what there talken about.
>
>Thanks for the Education.
>RorrKonn
>http://www.Atomic-3 (See http://mic-3.ora-code.com)D.com <http://www.Atomic-3 (See http://mic-3.ora-code.com)D.com>
>
>
>-- -- Original Message -- --
>From: Jon <mailto:JANDLBAIRD@(protected)> Baird
>To: truespace@(protected) <mailto:truespace@(protected)>
>Sent: Thursday, February 12, 2004 5:11 PM
>Subject: Re: [TSML] Real Nurbs ?
>
>NURBS stands for a Non Uniform Rational B-Spline and
>is a mathematical way to interpolate a between points
>in a set. It is a parametric representation of curves
>and surfaces. I think C4D uses the term HyperNURBS,
>which is a trademark I believe, to describe their
>implementation of subdivision surfaces. When people
>say this or that application doesn't have real NURBS I
>often think they mean it doesn't support NURBS
>surfaces. For instance, in C4D HyperNURBS may not be a
>true NURBS surface, but there are bezier curves, b-
>spline curves and other types of curves, which are I
>think so-called real NURBS. LW has bezier curves, too,
>which mathematically speaking are a special case of
>the more general set of curves defined by NURBS
>equations.
>
>Regards
>Jon
>
>
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