[vtkusers] visualizing NURBS++ surfaces (maybe a FAQ??)

Bryn Lloyd lloyd at itis.ethz.ch
Tue Aug 23 05:46:51 EDT 2011

Hi Giancarlo


It looks like the class vtkExplicitCell is abstract and there seems to be no
child classes VTK. I haven't used it (subclassed), so cannot help there.


Maybe the NURBS++ library can also output triangles or quads (it manages to
generate them for OpenGL rendering, so they exist somewhere).

Then you could fill a vtkPolyData with these triangles/polygons and render
as usual with VTK.


Good luck







From: vtkusers-bounces at vtk.org [mailto:vtkusers-bounces at vtk.org] On Behalf
Of Giancarlo Facoetti
Sent: Tuesday, August 23, 2011 9:55 AM
To: vtkusers at vtk.org
Subject: [vtkusers] visualizing NURBS++ surfaces (maybe a FAQ??)


Hi everybody,

I'm using an open source library for NURBS management, called NURBS++.
I'm able to do everything: creation of the surface, control points moving,
surface points moving, visualiation of the surface with OpenGL
I'm developing a VTK based application, and now I need to visualize the
NURBS++ surfaces into VTK pipeline, therefore without using gluNurbsSurface
but the VTK rendering
I found in the VTK documentation the class vtkExplicitCell.h that tells
about NURBS surfaces, but I didn't understand how to use it. (
Do you have some suggestion please?
thank you!


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