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

[wassim_belhadj at topnet.tn]

Thank you for your help 
it's ok for using vtkVolumeMapper::SetCroppingRegionPlanes method  but how
to allw user to select the Cropping region ?
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 3d scene)
Waitting for help and thank you very very very much



On Wed, 3 Sep 2008 11:24:49 +0200, "Lasso, Andras (GE Healthcare)"
<Andras.Lasso at med.ge.com> wrote:
> 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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