[Paraview] CoProcessing

[Takuya OSHIMA]

Hi Jacques,

I can share what I did with my own C++ simulation code. The caveats
are that I only did a quick test so far and that my code is
serial. But it's working. Take a look at the attached cxx file.

Initializations are in
  fdmCoProcessing(fdmTimeInfo *tInfo) and
  fdmCoProcessing::Parse(vtkXMLDataElement *coproc).
Replace source->GetCharacterData() in Parse() with the file name of
your Python script created by the ParaView coprocessing script
generator plugin.

Per-time step processings are in
  fdmCoProcessing::Exec().
Replace this->TimeInfo->GetGrid() with the output of your
adaptor. Perhaps this is where you have to elaborate.

Finalizations are in
  fdmCoProcessing::~fdmCoProcessing().

If your project is CMake-based, add
  FIND_PACKAGE(ParaView REQUIRED)
  INCLUDE(${PARAVIEW_USE_FILE})
to your CMakeLists.txt and vtkCoProcessor to your TARGET_LINK_LIBRARIES.

If my example is not enough you can also take a look at
ParaView/CoProcessing/CoProcessor/Testing/TestDriver
but I'm afraid it might be a bit too overwhelming as a starting point.

Hope this helps,
Takuya

Takuya OSHIMA, Ph.D.
Faculty of Engineering, Niigata University
8050 Ikarashi-Ninocho, Nishi-ku, Niigata, 950-2181, JAPAN

From: Jacques Papper <jacques.papper at gmail.com>
Subject: Re: [Paraview] CoProcessing
Date: Wed, 4 Aug 2010 13:02:36 +0100

> * Hi All,
> 
> Sorry for my last post, I figured out that I had wrongly set my PYTHONPATH..
> All the tests work ok now. Still interested in CoProcessing adaptors examples
> though :)
> 
> Thanks
> Jacques
> 
> 2010/8/4 Jacques Papper <jacques.papper at gmail.com>
> 
>     Hi All,
>    
>     I'm starting to look into the ParaView CoProcessing libraries.
>     I just pulled from git today, and compiled it all up following the
>     guidelines in :
>     http://www.paraview.org/Wiki/CoProcessing
>     I didn't find :
>     BUILD_PYTHON_COPROCESSING_ADAPTOR
>     but instead :
>     PARAVIEW_BUILD_PLUGIN_CoProcessingScriptGenerator
>     anyway the compilation went through without any issues.
>     I then tried :
>    
>     ctest -R CoProcessing
>     Test project /users/boreas01/jacques/PARAVIEW/ParaView-bin
>         Start 491: CoProcessingTestPythonScript
>     1/3 Test #491: CoProcessingTestPythonScript ...........   Passed    0.45
>     sec
>         Start 492: CoProcessingPythonScriptGridPlot
>     2/3 Test #492: CoProcessingPythonScriptGridPlot .......***Failed    0.09
>     sec
>         Start 493: CoProcessingPythonScriptPressurePlot
>     3/3 Test #493: CoProcessingPythonScriptPressurePlot ...***Failed    0.09
>     sec
>    
>     33% tests passed, 2 tests failed out of 3
>    
>     Total Test time (real) =   0.68 sec
>    
>     The following tests FAILED:
>             492 - CoProcessingPythonScriptGridPlot (Failed)
>             493 - CoProcessingPythonScriptPressurePlot (Failed)
>     Errors while running CTest
>    
>     Is this a problem in my current installation or on the master branch ?
>    
>     Finally, I would like to start writing an adaptor to a C++ parallelised
>     code. Can you tell me what is the closest code I can inspire myself from ?
> 
>     Thank you,
>     Jacques
> 
>     PS sorry mixed up the subjects..
> 
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