[Paraview] X3DExporter false mesh colouring?

[Utkarsh Ayachit]

Here's a fix for the same:

https://gitlab.kitware.com/vtk/vtk/merge_requests/1517

Utkarsh

On Mon, May 23, 2016 at 11:42 AM, Utkarsh Ayachit
<utkarsh.ayachit at kitware.com> wrote:
> Ah okay. Looks like there's another bug with cell-data coloring and
> x3d. I've spotted the bug (I think) and am working on a fix. Not sure
> how this could have worked in VTK example, however. I'll send you a
> patch shortly.
>
> On Mon, May 23, 2016 at 11:15 AM, Grothausmann, Roman Dr.
> <grothausmann.roman at mh-hannover.de> wrote:
>> Many thanks Utkarsh for Your quick reply.
>> Attached is an example VTP (generated by
>> https://github.com/romangrothausmann/FacetAnalyser/blob/master/demos/8faced-rhombic-dodecahedron_twinned_simp%2Bdef.pvsm)
>> coloured with KAAMS cat. on FacetIds (cell data) and then exported as X3D
>> from PV5. The PNG is a comparison view of PV and view3dscene.
>> The WebGL output (from make test) is great:
>> http://htmlpreview.github.io/?https://github.com/romangrothausmann/FacetAnalyser/blob/master/demos/8faced-rhombic-dodecahedron_twinned_simp%2Bdef.html
>>
>>
>> On 23/05/16 16:10, Utkarsh Ayachit wrote:
>>>
>>> And same with categorical colors. I did notice, however, it fails when
>>> coloring with "Field Data" arrays. Is that what you're seeing? That
>>> I'd expected would fail in VTK too. That's indeed a missing feature in
>>> the exporter.
>>>
>>> On Mon, May 23, 2016 at 10:06 AM, Utkarsh Ayachit
>>> <utkarsh.ayachit at kitware.com> wrote:
>>>>
>>>> Roman,
>>>>
>>>> Can you post an example? When I tried the same with a simple sphere
>>>> color by "Normals X", it seems to work as expected. I used
>>>> "view3dscene" to view the X3d file.
>>>>
>>>> On Mon, May 23, 2016 at 7:26 AM, Grothausmann, Roman Dr.
>>>> <grothausmann.roman at mh-hannover.de> wrote:
>>>>>
>>>>> Dear mailing list members,
>>>>>
>>>>>
>>>>> When I export scenes to X3D then load the mesh into blender or a browser
>>>>> the
>>>>> mesh is colour wrong. The colours are there but apparently assigned to
>>>>> random cells/vertices. This happens with either PV5 or PV4, especially
>>>>> for
>>>>> category colouring. When using e.g. WebGL exporter all is fine.
>>>>> Is there anything to do special for exporting to X3D? When I use plain
>>>>> VTK,
>>>>> the exported colours seemed OK so far.
>>>>>
>>>>> Any help or hints are very much appreciated
>>>>> Roman
>>>>>
>>>>>
>>>>> On 04/12/14 15:34, Michael Nolde wrote:
>>>>>>
>>>>>>
>>>>>> works perfectly, thank you!
>>>>>>
>>>>>> On 03.12.2014 19:49, Sebastien Jourdain wrote:
>>>>>> View is not valid at the point you get it.
>>>>>>
>>>>>> from paraview.simple import *
>>>>>> exporters=servermanager.createModule("exporters")
>>>>>> source=Cone()
>>>>>> Show()
>>>>>> render=Render()
>>>>>> x3dExporter=exporters.X3DExporter(FileName="foo.x3d")
>>>>>> x3dExporter.SetView(render)
>>>>>> x3dExporter.Write()
>>>>>>
>>>>>> On Wed, Dec 3, 2014 at 10:01 AM, Michael Nolde <__mnolde at gmx.net__>
>>>>>> wrote:
>>>>>> Dear mailing list members,
>>>>>>
>>>>>> I have some trouble exporting a scene to a X3D file via pvpython.
>>>>>> I tried to execute to code found in
>>>>>> __http://public.kitware.com/pipermail/paraview/2012-May/024924.html__
>>>>>> (see below). It is executed without any errors, but no output file is
>>>>>> created.
>>>>>> My Paraview version is 4.0.1 64-bit (on a Ubuntu 14.04 machine).
>>>>>> What I want to achieve is to convert .ply files to .x3d via pvpython.
>>>>>> Could someone give me a hint?
>>>>>>
>>>>>> Thanks in advance,
>>>>>> Michael
>>>>>>
>>>>>> from paraview.simple import *
>>>>>> exporters=servermanager.createModule("exporters")
>>>>>> source=Cone()
>>>>>> view = GetActiveView()
>>>>>> Show(view)
>>>>>> render=Render()
>>>>>> x3dExporter=exporters.X3DExporter(FileName="foo.x3d")
>>>>>> x3dExporter.SetView(view)
>>>>>> x3dExporter.Write()
>>>>>>
>>>>>>
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>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>> --
>>>>> Dr. Roman Grothausmann
>>>>>
>>>>> Tomographie und Digitale Bildverarbeitung
>>>>> Tomography and Digital Image Analysis
>>>>>
>>>>> Institut für Funktionelle und Angewandte Anatomie, OE 4120
>>>>> Medizinische Hochschule Hannover
>>>>> Carl-Neuberg-Str. 1
>>>>> D-30625 Hannover
>>>>>
>>>>> Tel. +49 511 532-2900
>>>>> _______________________________________________
>>>>> Powered by www.kitware.com
>>>>>
>>>>> Visit other Kitware open-source projects at
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>>>>>
>>>>> Please keep messages on-topic and check the ParaView Wiki at:
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>>
>> --
>> Dr. Roman Grothausmann
>>
>> Tomographie und Digitale Bildverarbeitung
>> Tomography and Digital Image Analysis
>>
>> Institut für Funktionelle und Angewandte Anatomie, OE 4120
>> Medizinische Hochschule Hannover
>> Carl-Neuberg-Str. 1
>> D-30625 Hannover
>>
>> Tel. +49 511 532-2900