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

[JFSLB at gmx.de]

<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="0">
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 0 1 2 3
5 4 5 6 7 8
5 9 4 8 2 1
4 6 0 3 7
4 2 8 7 3
3 9 5 4
5 6 5 9 1 0
</DataArray>
<DataArray type="Int64" Name="faceoffsets" format="ascii" RangeMin="38" RangeMax="38">
38
</DataArray>
</Cells>
</Piece>
</UnstructuredGrid>
</VTKFile>


On 10.12.2017 22:56, Bill Lorensen wrote:
> Post the new data set please. 
>
> On Dec 10, 2017 4:08 PM, <JFSLB at gmx.de> wrote:
>
>     I have reversed the order in "faces" so that the normals of the polygons point outwards, but he image is still the same. I have also reversed the order in "connectivity" but that did not help. For some reason two polygons (one in the x-y-plane and one in the x-z-plane) are rendered as a polygons with 4 points although they contain 5 points.
>
>     When I generated the data set there were some duplicated vertices, i.e. vertices with identical coordinates but different index and only one of the polygons was rendered incorrectly. I eliminated the duplicates and the second polygon was rendered incorrectly. I have no idea if that helps. 
>