[Paraview] PV 3.10.0 filters & contributing code

[Utkarsh Ayachit]

Natalie,

Could you share the code/data and steps to reproduce so that I may be
better able to judge what's the problem?

Also as far your question about contributing code goes, I think that's
definitely a great idea. I am a thinking of using a the following
workflow to get contributed code in:

* Commit your plugin (complete with CMake files and such) to a github
or gitorious repository.
* Add a Wiki page to the ParaView Wiki with details on building/using
the plugin, and any other relevant information useful to the user.
* Add a link for this Wiki page in the main page (I'll add a section
for contributed plugins).

If ParaView users find that plugin generally useable, we'd work with
the developer to get the plugin into the ParaView repository itself. I
want to keep this a separate step since many plugin developers may not
consider all the configurations  while writing their plugins e.g. it
should work in client-server, parallel, render-server/data-server,
remote-rendering etc. and it doesn't make sense to not share that
plugin only because it doesn't handle some obscure configuration.

How does that sound?

Utkarsh




On Thu, Apr 14, 2011 at 5:03 AM, Natalie Happenhofer
<nataliehapp at hotmail.com> wrote:
> Hi!
>
> I've recently downloaded PV 3.10.0 and extended it with my own filters I've
> already build in PV 3.6 and PV 3.8.0. However, executing them in PV3.10.0, I
> get the error
>
> Warning: In
> /home/happenhofer/svn/paraview/branches/ParaView-3.10.0/Servers/Filters/vtkTexturePainter.cxx,
> line 179
> vtkTexturePainter (0x900c8d0): Failed to locate selected scalars. Will use
> image scalars by default.
>
>
> ERROR: In
> /home/happenhofer/svn/paraview/branches/ParaView-3.10.0/VTK/Rendering/vtkOpenGLTexture.cxx,
> line 196
> vtkOpenGLTexture (0x9083d20): No scalar values found for texture input!
>
> I've googled those errors and one way to get rid of this seemed to be to
> name the arrays. Lamentably, the error persists after naming them.
>
> Here is a code fragment of setting the output (hor is a vtkDoubleArray):
>
> hor -> SetName(name.c_str());
> output -> CopyStructure(input);
> output -> GetPointData() -> AddArray(hor);
> output -> GetPointData() -> SetActiveScalars(name.c_str());
> output -> Squeeze();
>
> Do you have any ideas on this? As I said, in PV 3.6.x and PV 3.8.0 this code
> worked fine.
>
>
> Also, since I've been developing filters for ParaView quite a time now and
> some of my filters might be interesting to other users as well, so I thought
> about contributing code.
>
> I have coded a DataCalculator which operates on different data sets, for
> example if you have two datasets at different times and want to know the
> difference between the values, you could use this filter.
>
> Another filter of mine calculates the horizontal average of a dataset.
>
> Lastly, I wrote a wrapper-routine to the VTK-and the XDMF-Writer already
> included in Paraview, so that they do not just write one file, but write a
> time series of files. This might be interesting if you perform some
> operations on a time-series read in and want to save the output without
> having to call the writer for each time step separately.
>
> If you are interested, please let me know.
>
> Greetings,
> Natalie
>
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