[vtkusers] retrieving the dataset from actor

[Giancarlo Amati]

Hello guys,

I'm developing my software and I'm a kinda of OK to keep a vector of actors for managing the properties of visibility, color and renderings.
But In case I need to apply a filter to a visualized dataset and I have just the list of actors, is there any way to:

1) determine the type of dataset which that actor is visualising,
2) retrieving that dataset.

Many Thanks.
Giancarlo
 		 	   		  
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