One thing I want to clarify with respect to what Andy said. Figuring out parallel rendering in VTK is tricky but from ParaView be it C++ or Python, it is much easier. We are here to provide help.
Having said this, if you think that you will be changing your in situ functionality regularly, I would also highly recommend the Python route. If you are planning to build in a relatively fix in situ capability, C++ is a decent option. I would still recommend getting there through the Python route. Once you have everything figured out, we can help convert things to C++. Best, -berk On Wed, Sep 2, 2015 at 12:01 PM, Andy Bauer <[email protected]> wrote: > Hi Matthieu, > > I would strongly recommend that you use a ParaView GUI generated Python > Catalyst pipeline script instead of hand-written C++ Catalyst pipeliine to > do what you want. There are a surprising amount of settings required to > output images from VTK. If you want to do that in parallel the complexity > goes up even more due to parallel compositing of the images. Everyone that > I've run across that wanted to avoid Python with their Catalyst > instrumented code quickly changed their mind after trying out the Python > generated scripts. The overhead of using Python really is negligible > compared to a pure C++ description of the Catalyst pipeline. Also, the > Catalyst Live and Cinema output are all driven by Python code as well. > > The last and only time I tried doing rendering in parallel in VTK it took > me about 5 days and that was with constantly asking questions from other > people here at Kitware that knew how to do that. > > That being said, if after reading this you're still set on doing all of > this in C++ then let us know and we'll see what can be done. > > Regards, > Andy > > > On Wed, Sep 2, 2015 at 2:38 PM, Dorier, Matthieu <[email protected]> wrote: > >> Hi, >> >> I'm diving into Catalyst and try to build a pipeline in C++ for an simple >> example code. My use case is the following: >> I have a uniform 3D grid (converted into vtkImageData) on which I map a >> field of double values (wrapped into a vtkDoubleArray). >> By looking at the examples I managed to make the adaptor that creates the >> grid and maps the field on it. Now I would like to build pipelines for 2 >> scenarios: >> - slicing the grid horizontally at a given level, apply a color map, and >> output the result in a PNG file; >> - building an isosurface from the 3d grid (with configurable isovalue) >> and print the result in a PNG file. >> In both cases I don't know which classes to look at in the Doxygen of >> VTK. Besides, I suppose for the second case there should be some concept of >> camera position and parameters... >> >> Any hint or examples would be appreciated. >> Thanks, >> >> Matthieu Dorier >> >> _______________________________________________ >> Powered by www.kitware.com >> >> Visit other Kitware open-source projects at >> http://www.kitware.com/opensource/opensource.html >> >> Please keep messages on-topic and check the ParaView Wiki at: >> http://paraview.org/Wiki/ParaView >> >> Search the list archives at: http://markmail.org/search/?q=ParaView >> >> Follow this link to subscribe/unsubscribe: >> http://public.kitware.com/mailman/listinfo/paraview >> >> > > _______________________________________________ > Powered by www.kitware.com > > Visit other Kitware open-source projects at > http://www.kitware.com/opensource/opensource.html > > Please keep messages on-topic and check the ParaView Wiki at: > http://paraview.org/Wiki/ParaView > > Search the list archives at: http://markmail.org/search/?q=ParaView > > Follow this link to subscribe/unsubscribe: > http://public.kitware.com/mailman/listinfo/paraview > >
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