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

[Sebastien Jourdain]

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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