[vtkusers] appendPolyData with shepard method: Points must be defined!

[Adrian Bielefeldt]

Hello everyone,

I have the following setup: two vtkPolyData-Objects polyData and
additionalPolyData that I would like to combine using vtkAppendPolyData
append into one and execute a shepard method on. The following code runs
fine:


append->AddInputData(polyData);

append->Update()

(handing it to the shepard method and the rendering).


Same goes for:


append->AddInputData(additionalPolyData);

append->Update()

(handing it to the shepard method and the rendering).


This however:


append->AddInputData(polyData);

append->AddInputData(additionalPolyData);

append->Update()

(handing it to the shepard method and the rendering).


results in a "Points must be defined!"-error.

Can anybody explain to me where I'm going wrong?


Greetings,


Adrian