[vtkusers] How to find Normal vector ?

Sylvain Jaume jaume at tele.ucl.ac.be
Sat Sep 1 07:13:03 EDT 2001

use vtkPolyDataNormals *pdn on your polydata
don't forget: pdn->Update()
to get normal at point index i:


On Sat, 1 Sep 2001, Kiran, P (CORP, GEITC) wrote:

> Hi all:
> I have a set of 3D points. And I have generated a triangulated surface from
> these points.
> Now, I want to find normal vector at each point on the surface.  How I can
> do this in vtk?
> Are there any available methods to do this kind of stuff?
> Can someone through some light on how to do this..
> Thanks in advance for help.
> Kiran
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