[vtkusers] how to calculate normals on the surface of a 3d object in VTK?

[Vidya Raghavan]

Hi,

I currently have code to display 3D segmented data. Is there a way I can 
calulate normals at every point on the surface of the object?

Thanks for any help,

-vidya

_________________________________________________________________
Search for your life partner made easy.  
http://www.bharatmatrimony.com/cgi-bin/bmclicks1.cgi?74 On 
BharatMatrimony.com