[vtkusers] "Solid" polyhedron

[David E DeMarle]

vtkPolyData can only represent the external surfaces, because it can
only contain 2D cell types, such as triangle.

vtkUnstructuredGrid can represent the internal volume as well, because
it can contain 3D cell types, such a tetrahedra.

You can use the Delauney filters to create 2D or 3D cells out of a set
of points.


On Wed, Feb 4, 2009 at 8:05 AM, Jens K. Becker <becker at jkbecker.de> wrote:
> Hi all,
>
> I have a polyhedron that I can display using vtk. The polyhedron is
> essentially defined by vertices that define triangluar facets which make
> up the outer shell of it. I use vtk to display the outer shell, the
> different vertices (as spheres) and edges of facets (as tubes). But it
> is only the outer shell that is displayed, the polyhedra are hollow. How
> can I color the whole polyhedron? I dont even know where to start
> looking to achieve this. Eveything I read about creating volumes does
> not apply to the kind of data I have (which essentially are the
> coordinates of vertices in 3D and which vertex belongs to which facet).
> Any help and hints are welcome!
>
> Greetings,
> Jens
>
> --
> Dr. J.K. Becker
> University of Tuebingen - Institute for Geoscience
> Sigwartst. 10 - 72076 Tuebingen (Germany)
> Tel.: ++49 7071 29 73139   Fax: +49 7071 5059
> Web: http://www.jkbecker.de
>
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-- 
David E DeMarle
Kitware, Inc.
R&D Engineer
28 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-371-3971 x109