[vtkusers] Multiple actors using discretemarchingcubes

[Thommen Korah]

Bill,
Thanks. The example is helpful, but doesn't show how to extract individual actors. The vtkActor I display (after discretemarchingcubes) is a single actor that covers all the labeled volumes. Each component is colored separately because I use a color table.
I would now like the user to click on a single component volume and return an actor corresponding to that label. Is there a way to do that? I have already tried creating multiple actors with separate call to discretemarchingcubes for each individual label. However, that is much slower than just passing a range of labels with one single instance of DMC.
Thanks,Thommen

Date: Mon, 16 May 2011 23:31:53 -0400
Subject: Re: [vtkusers] Multiple actors using discretemarchingcubes
From: bill.lorensen at gmail.com
To: thkorah at hotmail.com
CC: vtkusers at vtk.org

Look at this example. It uses vtkThreshold to extract the models using cell data:
http://www.vtk.org/Wiki/VTK/Examples/Cxx/Medical/GenerateModelsFromLabels


On Mon, May 16, 2011 at 11:22 PM, Thommen Korah <thkorah at hotmail.com> wrote:






I am able to use vtkDiscreteMarchingCubes to generate differently colored and labeled volumes. At the end of the visualization pipeline, I get a single vtkActor representing each labeled volume. How can I get separate vtkActors for each component.

I understand that I can call discrete marching cubes on each label separately and store the resulting actor. I was wondering if there was a more correct way to extract the actors separately.

Thanks. 		 	   		  

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