[vtkusers] How to vis normal vectors of polydata as arrows ?

[Lin M]

Hi all,

I'm trying to vis the normal vectos of polydata as arrows. Is there any
convenient way to achieve this? I read the example
http://www.vtk.org/Wiki/VTK/Examples/Cxx/GeometricObjects/OrientedArrow
here, but I still don't understand how to do this. It seems to vis one
arrow we need to follow quite a lot steps. I think my problem is the same
with
http://vtk.1045678.n5.nabble.com/vtkglyph3D-with-arrowsource-td1247920.html
, though there is no answer below. :-(

Can anyone give me some advice? Thank you very much!

Best,
Lin
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