[Paraview-developers] establish client connection to pvserver from C++

[Peter Vogt]

Yes, I have tried already for a few days to figure out what is going on in
the python wrappers. I didn't get too far, because the architecture of the
wrappers and their generation is not documented.
So, please, if you can quickly derive a working C++ solution from the
python code, I will highly appreciate it.
Otherwise I would hope that somebody else will answer my question.

Thanks
Peter


On Wed, Apr 20, 2016 at 5:09 PM, Sebastien Jourdain <
sebastien.jourdain at kitware.com> wrote:

> The python code do call the C++ layer underneath, so if you follow the
> path of the calls you could figure out the C++ part of it.
> Unless someone else provide a C++ example.
>
> Seb
>
> On Wed, Apr 20, 2016 at 9:06 AM, Peter Vogt <vogtpeter5 at gmail.com> wrote:
>
>> Thank you, but we need a pure C++ solution. There is plenty of
>> information how this is done with python scripting, but I can't find
>> anything for C++.
>> I really need nothing more than a minimal example.
>>
>> Peter
>>
>> On Wed, Apr 20, 2016 at 4:52 PM, Sebastien Jourdain <
>> sebastien.jourdain at kitware.com> wrote:
>>
>>> I would go with Python instead of C++ and use the same principal as
>>> ParaViewWeb but in a script mode instead.
>>>
>>> On a Mac here is what I did
>>>
>>> $ cd /Applications/paraview.app/Contents/
>>> $ ./bin/pvserver
>>>
>>> $ cd /Applications/paraview.app/Contents/
>>> $ ./bin/pvpython ~/Desktop/demo.py
>>>
>>> Hope that helps,
>>>
>>> Seb
>>>
>>> On Wed, Apr 20, 2016 at 8:34 AM, Peter Vogt <vogtpeter5 at gmail.com>
>>> wrote:
>>>
>>>> Hello,
>>>> we aim at implementing an image processing application that interpretes
>>>> the rendered images from a remote parallel visualization of large datasets.
>>>>
>>>> For this purpose we need to connect to a running pvserver, send a few
>>>> commands to set up the visualization pipeline, and receive a sequence of
>>>> rendered images. If possible, we would use the core classes without a
>>>> necessity to include the Qt framework.
>>>>
>>>> I am currently stuck with the first step, how to connect to a remote
>>>> pvserver.
>>>> My first attempt failed:
>>>> ...
>>>> int main(){
>>>>   vtkSMSessionClient *session=vtkSMSessionClient::New();
>>>>   session->Connect("cs://<remote.host>");
>>>> }
>>>>
>>>> These lines segfault as follows:
>>>>   Warning: vtkPVServerInformation (0x239ff50): ProcessModule is not
>>>> available.
>>>>   Warning: vtkPVSessionBase (0x239deb0): No vtkMultiProcessController
>>>> for Session. The session won't work correctly.
>>>>   Segmentation fault (core dumped)
>>>>
>>>> May I ask, if somebody can send me a working C++ code snippet or
>>>> explain in words, how to
>>>> 1. connect a client to a remote pvserver
>>>> 2. let the client create a sphere or any other data source on the server
>>>> 3. receive a rendered image from the server (I might be able to figure
>>>> this out myself if I have a solution for steps 1. and 2.)
>>>>
>>>> Thank you
>>>> Peter
>>>>
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>>
>
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