[Paraview] Communication from Python to own C++ reader

[Sven Buijssen]

Hi Fabian,

It should be possible to hide CurrentPolledStep from the GUI by adding this to
your XML file (didn't test it, though):

    <Hints>
      <!-- This property is here simply to get it. -->
      <Property name="CurrentPolledStep" show="0" />
    </Hints>

Look at ParaView3/Servers/ServerManager/Resources/readers.xml for examples where
to put it exactly.

Your problem with
  r.CurrentPolledStep
not changing might be caused by your XML. I guess it should read:

     <IntVectorProperty  name="CurrentPolledStep"
       command="GetCurrentPolledStep" ....>

Please note the "Get" instead of the "Set".

Sven


----- Original Message -----
From: Fabian Wein <fabian.wein at am.uni-erlangen.de>
To: "paraview at paraview.org" <paraview at paraview.org>
Sent: 10/15/09 15:19:21
Subject: [Paraview] Communication from Python to own C++ reader
> Hi,
> 
> it's me again - I have the impression that nothing that I try really
> works :(
> But I'm getting closer :)
> 
> I get access to my reader from python via
> r = GetSources().items()[0][1]
> 
> I want to get an integer value from my reader.
> 
> The only way I know to do this, is:
> 
> *.h
>   vtkSetMacro(CurrentPolledStep, int);
>   vtkGetMacro(CurrentPolledStep, int);
>   int CurrentPolledStep;
> 
> and *.xml
>      <!-- Allow AnimationReader.py to check if there is a new in-situ
> result -->
>      <IntVectorProperty  name="CurrentPolledStep"
>        command="SetCurrentPolledStep"
>        number_of_elements="1"
>        default_values="1">
>        <BooleanDomain name="int"/>
>        <Documentation>
>          Current step determined by the reader step.
>        </Documentation>
>      </IntVectorProperty>
> 
> I actually don't want to have it in the GUI but that's the only way I
> found.
> 
> It is also displayed as a checkbox in the GUI but according to
> classvtkSMBooleanDomain.html
> it shall take any int value.
> 
> I also have a TimeStep value from a range.
> 
> In python I always get the value set in the GUI but not the current
> value in my
> C++ object.
> 
> I call Modified() within C++ after setting and
> r.UpdatePipelineInformation()
> in python but
> r.TimeStep
> and
> r.CurrentPolledStep
> don't change in python.
> 
> Any hint?
> 
> Thanks,
> 
> Fabian
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