[ITK-users] Error in itk::BinaryMask3DMeshSource when using Mesh with arbitrary CellDataType

[Sepideh's Gmail]

Hello, 

I am facing a problem working with itk::Mesh objects. This class is templated on the TMeshTrait which itself is templated on TCellPixelType. 
Since I can define an arbitrary Cell/PointDataType for my mesh, I created an itk::Mesh with CellDataType being std::pair<int,int> without any problem.
However, when I tried to use my mesh type as the OutputMeshType of itk::BinaryMask3DMeshSource filter I got type-casting error. Looking at itkBinaryMask3DMeshSource.hxx source code, I noticed that this filter is initializing Cell data to 0.0, meaning it assumes the CellDataType to always be castable to double (which my std::pair<> type was obviously not>. 

I wonder why this filter is written in away that constrains the available flexibility in itk::Mesh type. 

Thanks for your help in advance.
Regards,
Sepide