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

[Adamos Kyriakou]

I wrote a blog post which shows how to do that. Take a look at http://pyscience.wordpress.com/2014/10/05/from-ray-casting-to-ray-tracing-with-python-and-vtk/ <http://pyscience.wordpress.com/2014/10/05/from-ray-casting-to-ray-tracing-with-python-and-vtk/>

Cheers,
Adam

> On Oct 30, 2014, at 1:33 PM, Lin M <majcjc at gmail.com> wrote:
> 
> 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 <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 <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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