[vtkusers] How to create hexahedron polydata?

[TJ Corona]

From the vtk documentation <https://www.vtk.org/doc/nightly/html/classvtkPolyData.html>:

vtkPolyData <https://www.vtk.org/doc/nightly/html/classvtkPolyData.html> represents a geometric structure consisting of vertices, lines, polygons, and/or triangle strips.

Hexahedra are 3-dimensional cells; you cannot put a hexahedron into polydata. You can create an unstructured grid from 8 points <https://www.paraview.org/Wiki/VTK/Examples/Cxx/GeometricObjects/Hexahedron>, and then extract its surface as polydata <https://www.vtk.org/Wiki/VTK/Examples/Cxx/PolyData/DataSetSurfaceFilter>. What exactly are you trying to do?

Thomas J. Corona, Ph.D.
Kitware, Inc.
Senior R&D Engineer
21 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-881-4443

> On Nov 2, 2017, at 1:36 AM, Anniywell <wellq.an at gmail.com> wrote:
> 
> I have 8 points, how to create hexahedron polydata?
> 
> 
> 
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