[Paraview] Object Panel <-> Model Communication

[Clinton Stimpson]

If its because its an information property, I think adding a show="1" 
attribute to the property will make it show up.

Clint

Utkarsh Ayachit wrote:
> You will have to create a custom panel. Look at the custom panel
> example in Examples/Plugin.
>
> Utkarsh
>
> On Sat, Jan 3, 2009 at 4:29 PM, Nehme Bilal <nbilal at mirarco.org> wrote:
>   
>> Hi,
>>
>> I am trying to use "DoubleArrayInformationHelper" to get a vtkDoubleArray
>> from server side and show it in my filter GUI.
>> XML code:
>>
>>      <DoubleVectorProperty
>>         name="volumesArray"
>>         command="GetVolumesArray"
>>         information_only="1">
>>        <DoubleArrayInformationHelper/>
>>      </DoubleVectorProperty>
>>
>> C++:
>>        vtkDoubleArray* GetVolumesArray()
>>        {
>>                return this->volumesArray;
>>        }
>> The current code don't show anything in the GUI.
>> I would like to see the content of volumesArray in a Table, List or a Tree
>> widget.
>>
>> How can I do that ?
>>
>> Nehme
>>
>>
>>
>>     
>>> From: Utkarsh Ayachit <utkarsh.ayachit at kitware.com>
>>> Subject: Re: [Paraview] Object Panel <-> Model Communication
>>> To: rafaelmarch3 at yahoo.com
>>> Cc: paraview at paraview.org
>>> Date: Tuesday, December 16, 2008, 2:17 PM
>>>
>>> To get back "values" from the server, you can use either
>>> "information
>>> properties" or "information objects".
>>>
>>> Information properties are properites with information_only="1" set
>>> in
>>> the XML (eg. in Servers/ServerManager/Resources/rendering.xml the
>>> "Camera" proxy has "CameraPositionInfo" as an information
>>> property).
>>> Such properties need an "InformationHelper" which knows how to obtain
>>> the values from the server. For simple Get*() methods, you can use the
>>> <SimpleDoubleInformationHelper/> or <SimpleIntInformationHelper />
>>> etc. based on the type of the property. Complex information helpers
>>> can be written as well. Look at
>>> TimeStepsInformationHelper
>>> (vtkSMTimeStepsInformationHelper.h|cxx) as an example.
>>>
>>> Information objects are used to get data from server which cannot be
>>> simply put in a property for example information about the data object
>>> produced by a filter (vtkPVDataInformation). These are
>>> vtkPVInformation subclasses. You can create you own vtkPVInformation
>>> subclass that knows how to collect information and then
>>> serialize/deserialize it for transfer to the client from the server
>>> (if needed). To gather such information, one uses
>>> vtkProcessModule::GatherInformation(vtkIdType connectionID,
>>> vtkTypeUInt32 serverFlags, vtkPVInformation* info, vtkClientServerID
>>> id) where "id" is vtkSMProxy::GetID() returned for the proxy from
>>> which you want to collect the information.
>>>
>>> In your case, information property may be an easier solution -- if I
>>> understand your problem correctly.
>>>
>>> There is a pqServerManagerModel instance
>>> accessible as
>>> pqApplicationCore::instance()->getServerManagerModel() that can be
>>> used to access sources/filters their representations, views etc. Take
>>> a look at Qt/Core/pqServerManagerModel.h for the API. That should help
>>> you access the visualization pipeline.
>>>
>>> "How to get, for instance, the ids of the nodes which are displayed
>>> after the application of a filter to the model ?"
>>> Not sure I understand what you mean by that. Can you please elaborate?
>>>
>>> Utkarsh
>>>
>>> On Tue, Dec 16, 2008 at 6:38 AM, Rafael March <rafaelmarch3 at yahoo.com>
>>> wrote:
>>>       
>>>> Hey all,
>>>>
>>>> I'm programming a filter with a custom Object Panel,
>>>> and I'm feeling a little bit lost about the ParaView architecture and
>>>> code design.
>>>>
>>>> My great problem is the comunication between the
>>>> Object Panel and the Model. I know I can't have a pointer to my
>>>> vtkUnstructuredGrid displayed, 'cause they are not
>>>>         
>>> necessarily at the
>>>       
>>>> same machine or process. I also know that I'm able to send information
>>>> to the model through properties, since I can get the vtkSMProxy in my
>>>> panel. But what about the way back ? Is there a way to send information
>>>> from the display view to the panel ? How can I display in a QTable, for
>>>> instance, the nodes of my model which have some property equals to 1 ?
>>>>
>>>> Another problem is the Visualization Pipeline: is there a way to
>>>>         
>>> "walk" on
>>>       
>>>> it ?
>>>> I mean, if I have a filter name, am I able to get the the filter no
>>>> matter where it is in the Pipeline ?
>>>>
>>>> Sorry for the mess with the questions. I hope I made it clear and someone
>>>> can help me ! :)
>>>>
>>>> Regards,
>>>> Rafael March.
>>>>
>>>> _______________________________________________
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>>>> ParaView at paraview.org
>>>>
>>>>         
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>>>       
>>>>         
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>>>
>>>       
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