[Paraview] SWKey: Help with VTK XML-Formatted "Writer" Routine.

[Armin Wehrfritz]

On this wiki page you find information on how polyhedrons are stored in
unstructured XML files (search the page for vtkXMLUnstructuredGrid):
http://www.vtk.org/Wiki/VTK/Polyhedron_Support

Hope it helps.

-Armin



On 02/17/2016 09:59 PM, Samuel Key wrote:
> My simulation software has a functioning VTK XML-formatted, "ascii"
> output routine. To facilitate datum set transfers, I want to add
> arbitrary, m-vertex polyhedral finite elements to the simulation
> software's existing Writer (VTK_POLYHEDRON = 42).
>
> Originally, I used the VTK File Formats Version 4.2 to construct the
> program's Writer. It is not clear to me what the XML structures should
> contain with respect to the polyhedral finite elements.
>
> Three files are attached: (1) *.inp is an input snippet for a polyhedral
> finite element used by the simulation software, (2) *.png is a ParaView
> screenshot display for this polyhedron read in from an EnSight-formatted
> file, and (3) *.vtu is a ParaView 'Save Data' output file for this
> polyhedral finite element.
>
> Referring to the *.vtu file, I am having difficulty relating the
> simulation software's and  EnSight's corresponding input description to
> the ParaView output description, particularly, "connectivity" and "faces."
>
> Do you have any advice on how I should proceed?
>
> Note: The simulation software does not require the polygon faces to be
> planar, nor the polyhedron volume to be convex. The simulation software
> computes proper mean quadrature gradient/divergence operators for
> non-planar facets and a restricted form of polyhedral star-convexity.
>
> Thanks in advance for the indicating how I should continue,
>
> Samuel Key
> FMA Development, LLC
> 1005 39th Ave NE
> Great Falls, Montana 59404
> USA
>
>
>
>
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