[vtkusers] bounding box

[Christos Dimitropoulos]

Hi everyone,

Can someone help me with the following problem:

I want to draw a box to my volume and then use the coordinates from this box as input in the setVOI function which is in the vtkExtractVOI filter.

In general I want to crop a volume but I want to see in the render window the region that I crop.
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