[vtkusers] How to combing many vtkprop or vtkactor to form a bigger actor or prop ?

[Rwik Mukhopadhyay]

Hi,
 i am a novice in vtk. Apologies, if my question is too basic. Actually I
am working on a  qt/vtk application , where plenty of vtk actors / props
can be plotted by user based on his requirement. Now there is a need to
provide a functionality to combine all the plotted actor / props to form a
mother actor/prop. I tried vtkactorcollection , but it stores all
theactors separately
. Please provide any suitable example or point me to related posts.
Thanks.
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