[vtkusers] vtkBorderWidget and vtkDICOMImageReader

[Sam Raby]

Hi,

I have modified the vtkBorderWidget example which has a moving window to
show the region that is selected by vtkBorderWidget. I am using VTK6.

As long as I use vtkJPEGReader, it works fine, but when I replace it with
vtkDICOMImageReader to read a single file of DICOM, then the moving border
does not show the exact region meaning that the region is a little off.

I think the problem comes from the following line of code:

    imageClip->SetOutputWholeExtent(
dicomReader->GetOutputInformation(0)->Get(
vtkStreamingDemandDrivenPipeline::WHOLE_EXTENT() ) );

Would you hint me why jpg works just fine but for dicom reader (with a
single file) the border and selected area are a little off and do not match?

thanks
sam


[1] http://www.vtk.org/Wiki/VTK/Examples/Cxx/Interaction/ImageClip
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