[vtkusers] How to find Normal vector ?

[Sylvain Jaume]

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

Sylvain

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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