[vtkusers] (no subject)

[David.Pont at ForestResearch.co.nz]

Hi yxliu,

I have used vtkGeometryFilter to get polygons from the surface of an
unstructured grid of hexahedrons, worked very well.
I also passed the output of this to vtkFeatureEdges with FeatureEdgesOn
(all other edges off) and an appropriate FeatureAngle.
This gave me two different 'fast'  (2D and 1D) representations of the much
larger 3D grid.

regards
   Dave P



|--------+---------------------------------------->
|        |          Mathieu Malaterre             |
|        |          <Mathieu.Malaterre at creatis.ins|
|        |          a-lyon.fr>                    |
|        |          Sent by:                      |
|        |          vtkusers-admin at vtk.org        |
|        |                                        |
|        |                                        |
|        |          01/09/2003 21:32              |
|        |                                        |
|--------+---------------------------------------->
  >------------------------------------------------------------------------------------------------------------|
  |                                                                                                            |
  |      To:     yxliu <yxliu at fudan.edu.cn>                                                                    |
  |      cc:     vtkusers at vtk.org                                                                              |
  |      Subject:     Re: [vtkusers] (no subject)                                                              |
  >------------------------------------------------------------------------------------------------------------|




Hi yxliu,

           What about:

 vtkFeatureEdges::BoundaryEdgesOn              (
 )
http://www.vtk.org/doc/nightly/html/classvtkFeatureEdges.html#z1239_2

HTH
mathieu
Ps: I never tried it with tetrahedron mesh.

yxliu wrote:
> Hi Vtkusers:
> I use vtkdelaunay3D class to generate a tetrahedron mesh. Howerer I want
> know how to obtain the boundary cells which located on the surface in
> the mesh
> thanks in advance!
> yxliu.


--
Mathieu Malaterre
CREATIS
28 Avenue du Doyen LEPINE
B.P. Lyon-Montchat
69394 Lyon Cedex 03
http://www.creatis.insa-lyon.fr/~malaterre/

_______________________________________________
This is the private VTK discussion list.
Please keep messages on-topic. Check the FAQ at: <
http://public.kitware.com/cgi-bin/vtkfaq>
Follow this link to subscribe/unsubscribe:
http://www.vtk.org/mailman/listinfo/vtkusers