[vtkusers] ImagePlaneWidget and GetResliceOutput

Sergio Andres sergio at unizar.es
Fri Oct 1 13:08:45 EDT 2004


Thank you for your answer.

I add SetDisplayExtent to avoid problem #1.... and it works.
I think this is not the problem, because the error came up before adding 
that.


Lederer, Maitland escribió:

>Sergio-
>
>I think I had your problem #2 yesterday.  :)  You are probably using
>SetDisplayExtent on your vtkImageActor somewhere, yes?  Comment it out
>and see what happens.  You probably have your display extent set to
>something that is outside the extent of the image.
>
>HTH,
>-maitland
>
>-----Original Message-----
>From: Sergio Andres [mailto:sergio at unizar.es] 
>Sent: Friday, October 01, 2004 11:47 AM
>To: vtkusers at vtk.org
>Subject: [vtkusers] ImagePlaneWidget and GetResliceOutput
>
>Hi all,
>
>I have a problem with vtkImagePlaneWidget and its method
>GetResliceOutput().
>
>The pipeline is like this:
>
>inputImage --> vtkImagePlangeWidget::GetResliceOutput() --> 
>vtkImageMapToColors --> vtkImageActor
>
>I use all these classes to display the same image in other window.
>And the problems are:
>
>1) The size of the output image from the widget is not the expected
>size.
>I read that the widget generates an output image whose extent is a power
>
>of 2.
>
>2) When I set a new inputImage, an error comes up about the update 
>extent and whole extent.
>
>I have been reading some previous mails sent to this list about these 
>problems,
>but I didn't manage to fix them.
>
>So I would appreciate any help.
>Thanks in advance.
>
>Sergio.
>
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