I render nurbs surface in osg by subclassing osg::Drawable. All work fine. In drawImplementation(osg::State&), I can use either GL evaluators (glMap2f, glMapGrid2f, glEvalMesh2), or gluNurbsSurface(). Both work. However, I do believe glu have some bugs on some data, particularly when knot-vector values are quite un-evenly distributed, (surface segment mapped to a very small knot-interval will miss).
But no problem when directly use GL.
-zitao
Date: Fri, 17 Nov 2006 14:13:37 -0500
From: austincb <[EMAIL PROTECTED]>
Subject: [osg-users] NURBS!
Hello all,
I am curious to know if anybody has ANY resources which might be
helpful in getting a simple NURBS spline and NURBS surface working in
osg. The NURBS++ library for C++ is dead and seems abandoned.
Ideally, it would be nice to have basic interaction with the control
points, but at this point I would just love to get something rendering
on screen.
Thanks,
-Austin
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