[Paraview] X3DExporter false mesh colouring?

[Utkarsh Ayachit]

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
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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