// =========================================================================
// @author Leonardo Florez Valencia
// @email florez-l@javeriana.edu.co
// =========================================================================

#ifndef __fpa__Image__Functors__VertexIdentity__h__
#define __fpa__Image__Functors__VertexIdentity__h__

#include <fpa/Image/Functors/VertexParentBase.h>

namespace fpa
{
  namespace Image
  {
    namespace Functors
    {
      /**
       */
      template< class _TInputImage, class _TOutputValue >
      class VertexIdentity
        : public fpa::Image::Functors::VertexParentBase< _TInputImage, _TOutputValue >
      {
      public:
        typedef _TInputImage                    TInputImage;
        typedef _TOutputValue                   TOutputValue;
        typedef VertexIdentity                  Self;
        typedef itk::SmartPointer< Self >       Pointer;
        typedef itk::SmartPointer< const Self > ConstPointer;
        typedef fpa::Image::Functors::VertexParentBase< TInputImage, TOutputValue > Superclass;

        typedef typename Superclass::TVertex TVertex;

      public:
        itkNewMacro( Self );
        itkTypeMacro(
          fpa::Image::Functors::VertexIdentity,
          fpa::Image::Functors::VertexParentBase
          );

      public:
        virtual TOutputValue Evaluate(
          const TVertex& a, const TVertex& p
          ) const override
          {
            return( TOutputValue( this->m_Image->GetPixel( a ) ) );
          }

      protected:
        VertexIdentity( )
          : Superclass( )
          { }
        virtual ~VertexIdentity( ) { }

      private:
        VertexIdentity( const Self& other );
        Self& operator=( const Self& other );
      };

    } // ecapseman

  } // ecapseman

} // ecapseman

#endif // __fpa__Image__Functors__VertexIdentity__h__

// eof - $RCSfile$