[Paraview] Accessing VTK data from a Paraview plugin

[Miron Sadziak]

Thank you for your reply. I think I shouldn't have used the word 
"directly". What I want is just 'any' access to the point data of the 
opened object. Even if I had to write both server and client plugin and 
send data by properties calls it would be ok. But by now I cant find any 
way to do it.

Utkarsh Ayachit さんは書きました:
> As you have discovered, there is no direct access to the actual 
> vtkDataObject on the client side. This is because paraview supports 
> server configurations in which the data processing server may be in 
> another process. In that case one cannot directly access the data on 
> the client side, since the data is never delivered in its entirety to 
> the client.
>
> Utkarsh
>
> Miron Sadziak wrote:
>> Thank you for you help. I checked the filter plugin description and 
>> the examples but I think thats not what I want. At least I cant 
>> figure out how I can use it to read the raw data through the client. 
>> The code I posted in the previous mail is already a part of a plugin 
>> which shows a toolbar with buttons in Paraview client. Clicking on a 
>> button should pop up a window with the point coordinates of all 
>> points of the selected source. Thats the aim but now it only shows 
>> the number of points and the vtk class name "vtkImageData". Since 
>> these informations are already on the client there must be a simple 
>> way to get also all the point coordinates/point data of that 
>> vtkImageData class. How to do it ?
>>
>>
>> Mike Jackson さんは書きました:
>>> You probably want to write a Filter plugin for ParaView. Look on the 
>>> Wiki for more information.
>>>
>>> Mike
>>>
>>> On Feb 18, 2008, at 8:16 PM, Miron Sadziak wrote:
>>>
>>>> Hi
>>>>
>>>> I want to write a plugin for Paraview to manipulate the data Paraview
>>>> has opened.
>>>> It will be mostly ImageData or PolyData but I would like to understand
>>>> the general idea how to do it.
>>>> Im using C++ so the code i have figured out by now looks like that:
>>>>
>>>> #Getting the active source
>>>> pqApplicationCore* core = pqApplicationCore::instance();
>>>> pqServerManagerSelection sels = 
>>>> *core->getSelectionModel()->selectedItems();
>>>> pqPipelineSource* source = 0;
>>>> pqServerManagerModelItem* item = 0;
>>>> pqServerManagerSelection::ConstIterator iter = sels.begin();
>>>> item = *iter;
>>>> source = dynamic_cast<pqPipelineSource*>(item);
>>>>
>>>> #Trying to access the data of the source.
>>>> #Here I can access data information only, not raw-data
>>>> vtkPVDataInformation*
>>>> datainfo=source->getOutputPort(0)->getDataInformation(true);
>>>> cout << "PointsNumber " << datainfo->GetNumberOfPoints() << "\n";
>>>> cout << "DataClassName " << datainfo->GetDataClassName() << "\n";
>>>>
>>>> It all works but its just data information.
>>>> I would like to access a function like GetData or GetDataArray to be
>>>> able to read the data contained in the VTK object. To read/write
>>>> directly from/to the data array. The problem is that I cant find a
>>>> suitable function in any of the classes like pqPipelineSource,
>>>> vtkPVDataInformation etc.
>>>> What should I do ?
>>>>
>>>> I would be thankful for any help,
>>>> Paraview user
>>>>
>>>>
>>>
>>
>> _______________________________________________
>> ParaView mailing list
>> ParaView at paraview.org
>> http://www.paraview.org/mailman/listinfo/paraview
>>
>
>