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List:       paraview
Subject:    Re: [Paraview] =?utf-8?q?How_to_use_a_plugin_from_the_python_script_s?=
From:       houssen <houssen () ipgp ! fr>
Date:       2015-08-20 13:32:46
Message-ID: 3d5638c1c44221b12c6e8f1447793d3d () imap ! ipgp ! fr
[Download RAW message or body]

For the record, I finally found the solution : use ns = globals when 
loading the plugin !
LoadPlugin ( '/mnt/users/.../libMyFilter.so', remote = False, ns = 
globals () )

FH

Le 2015-08-18 18:40, houssen a écrit  :
> Hello,
> 
> How to use a plugin from the python script shell prompt ?
> 
> I have a plugin (filter) that works fine (manual load with "tools /
> manage plugins" + apply filter : OK). I'd like to use python to
> manipulate it (to test it actually within "make test").
> 
> Here is the python script:
> ~> more applyFilter.py
> #!/usr/bin/env python
> from paraview.simple import *
> LoadPlugin ( '/mnt/users/.../libMyFilter.so' )
> data = XDMFReader ( FileNames = [ '/mnt/users/.../data.xmf' ] )
> MyFilter ()
> 
> In interactive mode :
> 1. Make sure I start from scratch : myFilter is not in the "tools /
> manage plugins" list.
> 2. Open a Python shell prompt + run the script.
> 3. I get this error :
> > > > Traceback (most recent call last):
> File "<string>", line 6, in <module>
> NameError: name 'MyFilter' is not defined
> 
> At this point, I was like "OK, there is perhaps a problem in the
> python wrapping of the C++ class". I google a bit and found that :
> http://www.cmake.org/pipermail/paraview/2013-December/030229.html. I
> tried to modify my plugin CMakeLists.txt (in particular with
> pv_setup_module_environment / pv_process_modules from the
> EyeDomeLighting plugin example) : didn't succeed to make it work. I
> cancelled all related modifications and got back to the initial
> CMakeList.txt which contains essentially this :
> ADD_PARAVIEW_PLUGIN ( myFilter
> "${CPACK_PACKAGE_VERSION_MAJOR}.${CPACK_PACKAGE_VERSION_MAJOR}"
> SERVER_MANAGER_XML myFilter.xml SERVER_MANAGER_SOURCES myFilter.cpp
> DOCUMENTATION_DIR "${CMAKE_CURRENT_SOURCE_DIR}/doc" ).
> 
> After that, I was like "OK, maybe I need to import the python module
> corresponding to my plugin". As I don't know which one this could be,
> I tried to add in the script the line "from paraview.simple import *"
> a 2d time after the "LoadPlugin". I get another type of error:
> > > > Traceback (most recent call last):
> File "<string>", line 7, in <module>
> File
> 
> "/home/houssen/Programs/ParaView/ParaView-v4.3.1-source/local/lib/paraview-4.3/site-packages/paraview/simple.py",
>  line 1481, in CreateObject
> elif active_objects.source:
> File
> 
> "/home/houssen/Programs/ParaView/ParaView-v4.3.1-source/local/lib/paraview-4.3/site-packages/paraview/simple.py",
>  line 1690, in get_source
> self.__get_selection_model("ActiveSources").GetCurrentProxy())
> File
> 
> "/home/houssen/Programs/ParaView/ParaView-v4.3.1-source/local/lib/paraview-4.3/site-packages/paraview/simple.py",
>  line 1684, in __convert_proxy
> servermanager._getPyProxy(px.GetSourceProxy()),
> AttributeError: GetSourceProxy
> 
> After some testing, I ended up on this scenario which makes me think
> that there is actually no python wrapping problem. Here is the 2d
> scenario (in interactive mode):
> 1. In the GUI use "tools / manage plugins" to load myFilter : OK
> 2. In the GUI, open a data file
> 3. Open a Python shell prompt + type only the last script line
> "myFilter ()" : this works ?!... Surprisingly ?!
> So I would say there is no problem with the python binding.
> 
> What did I miss ? Can somebody help me ?
> 
> Franck
> 
> PS : I run Ubuntu-14.04, I use ParaView-4.3.1 built from source
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