[vtkusers] vtkImageStencil output scalar values

[Jothy]

Hi all,

I am using vtkPolydatToImageStencil and vtkLinearExtrusionFilter to create a
vtkImageData with the extruded volume with vtkImageStencil. I wanted to know
how scalar values will be modified after these operations. Will the scalar
values outside the extruded volume set to zero?

Thanks

Jothy
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