[vtkusers] problem creating a vtu file with a VTK polyhedron

[JFSLB at gmx.de]

Dear VTK users,
I am trying to generate a vtu file that contains a single cell of type VTK_POLYHEDRON. The file I generated loads successfully in paraview but two edges of one face are not renderred correctly. The wireframe is displayed corretly. The cell consists of seven polygonal faces. I have made sure that the surface is water tight and that every edge is used exactly twice. I have also inverted the orientation of the polygons but that did not improve the situation.

Can someone see an error in the vtu file below?

Thanks!



<VTKFile type="UnstructuredGrid" version="1.0" byte_order="LittleEndian" header_type="UInt64">
<UnstructuredGrid>
<Piece NumberOfPoints="10" NumberOfCells="1">
<CellData Scalars="level">
<DataArray type="Float32" Name="level" format="ascii" RangeMin="0" RangeMax="6">
0 
</DataArray>
</CellData>
<Points>
<DataArray type="Float32" Name="Points" NumberOfComponents="3" format="ascii" RangeMin="-1" RangeMax="1">
0.0204729 -0.000857723 0.0396787
0.0206677 -0.000857723 0.038172
0.0212252 -0.000857723 0.038172
0.0212252 -0.000857723 0.0396787
0.0207424 0.0006489 0.038172
0.0207424 0.0006489 0.0387988
0.0206286 0.0006489 0.0396787
0.0212252 0.0006489 0.0396787
0.0212252 0.0006489 0.038172
0.0207501 -6.0656e-05 0.038172
</DataArray>
</Points>
<Cells>
<DataArray type="Int64" Name="connectivity" format="ascii" RangeMin="0" RangeMax="6">
0 1 2 3 4 5 6 
</DataArray>
<DataArray type="Int64" Name="offsets" format="ascii" RangeMin="7" RangeMax="7">
7 </DataArray>
<DataArray type="UInt8" Name="types" format="ascii" RangeMin="42" RangeMax="42">
42 
</DataArray>
<DataArray type="Int64" Name="faces" format="ascii" RangeMin="0" RangeMax="9">
7
4 3 2 1 0
5 8 7 6 5 4 
5 1 2 8 4 9 
4 7 3 0 6
4 3 7 8 2
3 4 5 9
5 0 1 9 5 6 
</DataArray>
<DataArray type="Int64" Name="faceoffsets" format="ascii" RangeMin="38" RangeMax="38">
38 
</DataArray>
</Cells>
</Piece>
</UnstructuredGrid>
</VTKFile>