#ifndef __fpa__Image__Functors__SimpleDijkstraCost__h__
#define __fpa__Image__Functors__SimpleDijkstraCost__h__

#include <fpa/Image/Functors/Base.h>
#include <fpa/Base/DijkstraCostFunctionBase.h>

namespace fpa
{
  namespace Image
  {
    namespace Functors
    {
      /**
       */
      template< class _TImage, class _TOutput >
      class SimpleDijkstraCost
        : public fpa::Image::Functors::Base< _TImage, fpa::Base::DijkstraCostFunctionBase< typename _TImage::IndexType, _TOutput > >
      {
      public:
        typedef _TImage                    TImage;
        typedef typename TImage::IndexType TIndex;
        typedef _TOutput                   TOutput;

        typedef fpa::Base::DijkstraCostFunctionBase< TIndex, TOutput > TBaseFunctor;
        typedef fpa::Image::Functors::Base< TImage, TBaseFunctor > Superclass;
        typedef SimpleDijkstraCost              Self;
        typedef itk::SmartPointer< Self >       Pointer;
        typedef itk::SmartPointer< const Self > ConstPointer;

      public:
        itkNewMacro( Self );
        itkTypeMacro( SimpleDijkstraCost, Base );

        itkBooleanMacro( UseImageSpacing );
        itkGetConstMacro( UseImageSpacing, bool );
        itkSetMacro( UseImageSpacing, bool );

      public:
        virtual TOutput Evaluate(
          const TIndex& a, const TIndex& b
          ) const override;

      protected:
        SimpleDijkstraCost( );
        virtual ~SimpleDijkstraCost( );

      private:
        // Purposely not implemented
        SimpleDijkstraCost( const Self& other );
        Self& operator=( const Self& other );

      protected:
        bool m_UseImageSpacing;
      };

    } // ecapseman

  } // ecapseman

} // ecapseman

#ifndef ITK_MANUAL_INSTANTIATION
#  include <fpa/Image/Functors/SimpleDijkstraCost.hxx>
#endif // ITK_MANUAL_INSTANTIATION

#endif // __fpa__Image__Functors__SimpleDijkstraCost__h__

// eof - $RCSfile$