[Insight-developers] ITKImageFunction dependecy in Transform

[Matt McCormick]

Hi Michael,

> In rebasing the Transform changes patch set onto the latest itk master, I've
> got a dependency problem. DeformationFieldTransform
> includes itkVectorLinearInterpolateImageFunction.h, which is
> in ITKImageFunction. But adding this to Transform/itk-module.cmake causes a
> circular dependency. Any suggestions? I don't know how to handle this.

That is a difficult problem.  Moving DeformationFieldTransform to
ITKImageFunction would probably not be appropriate.  Is it possible to
use a C++ forward declaration for
VectorLinearInterpolateImageFunction?  I assume that any module
depending on ITKTransform is also likely to depend on ITKImageFunction
anyway.

> I've also had to add ITKImageFilterBase to Transform/itk-module.cmake.

What is this caused by?  I think the hope is to keep modules in the
Core group from depending on the outside modules.

CC'ing the list for any other suggestions.

Thanks,
Matt