[vtkusers] Need Help but No nobody gave me advice or answer : croping region on the volume rendered

[Lasso, Andras (GE Healthcare)]

1 -> You can use the vtkVolumeMapper::SetCroppingRegionPlanes method to
render a partial volume, or vtkImageClip to crop the actual image data.
2 -> The change is effective immediately (changing the clipping triggers
an update in the rendering pipeline)
3 -> Just search for SetCroppingRegionPlanes and vtkImageClip in the
full text of the VTK source

Andras


-----Original Message-----
From: vtkusers-bounces at vtk.org [mailto:vtkusers-bounces at vtk.org] On
Behalf Of wassim_belhadj at topnet.tn
Sent: Wednesday, September 03, 2008 8:34 AM
To: vtkusers at vtk.org
Cc: vtkusers at public.kitware.com
Subject: [vtkusers] Need Help but No nobody gave me advice or answer :
croping region on the volume rendered
Importance: High


Hi 

I'm starting with VTK and  I need the help that I have not found.
I posted the message three times but not always answers or advice.
is there experts who respond to messages that hanging time?
I hope that this time my problem will be solved.
I'am usiing VTK 5.0.2 for volume rendering from a CT Data sets. All
works good and i have a nice volume rendered.
I would like to allow user to set a croping region on the volume
rendered (for example when he presses a button a frame that can be
manipulated in width and height is added to the scene)
 
My questions are so :

1) How to set a croping region on the volume rendered?

2)How to apply change to the volume rendered ? ( render the  volume
selected).

3) Are there examples of this genre?


I hope  that you bring me help and I thank you in advance.

I'm stuck on this part then your advice will also be welcome





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