[vtkusers] Remove duplicate triangles in vtkPolyData

[kenichiro yoshimi]

Hi Roman,

Thank you for your suggestion. I created a Merge Request, though the
improvement of the code quality might be still not enough.
https://gitlab.kitware.com/vtk/vtk/merge_requests/4265

Best,
yoshimi

2018-05-04 19:47 GMT+09:00 Grothausmann, Roman Dr.
<grothausmann.roman at mh-hannover.de>:
> Hi Kenichiro,
>
>
> Your filter also helped me. As Luca, I strongly vote for contributing that
> as a new filter for VTK. It seems You already have an account on
> gitlab.kitware.com, tough I could not find Your code on GitLab nor GitHub.
> To contribute via a PR on gitlab.kitware.com You cold just add your code to
> a clone of the current VTK master and push your additions to create a PR
> from. Let me know if you need more help on that. It would really be a pity
> if such a useful implementation would stay outside VTK.
>
> Best,
> Roman
>
>
>
> On 26/05/17 06:06, kenichiro yoshimi wrote:
>>
>> Hi,
>>
>> I have a filter to remove duplicate polygons which is created with
>> reference to the filter vtkCleanUnstructuredGridCells in ParaView. I
>> have attached the sample. I hope this will help you in some way.
>>
>> Thanks,
>>
>> 2017-05-25 21:47 GMT+09:00 Luca Pallozzi Lavorante
>> <lplavorante at gmail.com>:
>>>
>>> Good morning,
>>> I would like to know if there any VTK (7.0) class to remove duplicate
>>> triangles in a vtkPolyData. Actually, the duplicate triangles are the
>>> output
>>> of the following pipeline:
>>>
>>> vtkUnstructuredGrid -> vtkDataSetSurfaceFilter
>>>
>>> My original  data is a geological layer which can have zero thickness in
>>> some portions. When this happens, vtkDataSetSurfaceFilter returns a
>>> vtkPolyData mesh with duplicated triangles. When I apply
>>> vtkPolyDataNormals
>>> to this mesh, the duplicated triangles do not appear smooth. So I though
>>> I
>>> could use vtkCleanPolyData, but it did not work.
>>>
>>>   Thanks in advance for any help.
>>>
>>>        Luca Pallozzi Lavorante
>>>
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>
> --
> Dr. Roman Grothausmann
>
> Tomographie und Digitale Bildverarbeitung
> Tomography and Digital Image Analysis
>
> Medizinische Hochschule Hannover
> Institut für Funktionelle und Angewandte Anatomie
> OE 4120, Carl-Neuberg-Str. 1, 30625 Hannover, Deutschland
>
> Tel. +49 511 532-2900
> grothausmann.roman at mh-hannover.de
> http://www.mh-hannover.de/anatomie.html