lib/fpa/Functors/Dijkstra/Image/Identity.h

   1 // =========================================================================
   2 // @author Leonardo Florez Valencia
   3 // @email florez-l@javeriana.edu.co
   4 // =========================================================================
   5 #ifndef __fpa__Functors__Dijkstra__Image__Identity__h__
   6 #define __fpa__Functors__Dijkstra__Image__Identity__h__
   7
   8 #include <fpa/Functors/BaseVertexFunction.h>
   9
  10 namespace fpa
  11 {
  12   namespace Functors
  13   {
  14     namespace Dijkstra
  15     {
  16       namespace Image
  17       {
  18         /**
  19          */
  20         template< class _TImage, class _TValue >
  21         class Identity
  22           : public fpa::Functors::BaseVertexFunction< typename _TImage::IndexType, _TValue >
  23         {
  24         public:
  25           typedef _TImage TImage;
  26           typedef _TValue TValue;
  27           typedef typename TImage::IndexType TVertex;
  28           typedef fpa::Functors::BaseVertexFunction< TVertex, TValue >  Superclass;
  29           typedef Identity                        Self;
  30           typedef itk::SmartPointer< Self >       Pointer;
  31           typedef itk::SmartPointer< const Self > ConstPointer;
  32
  33         public:
  34           itkNewMacro( Self );
  35           itkTypeMacro(
  36             fpa::Functors::Dijkstra::Image::Identity,
  37             fpa::Functors::BaseVertexFunction
  38             );
  39
  40         public:
  41           virtual TValue Evaluate( const TVertex& v, const TVertex& p ) const override
  42             {
  43               const TImage* image =
  44                 dynamic_cast< const TImage* >(
  45                   this->m_DataObject.GetPointer( )
  46                   );
  47               if( image != NULL )
  48                 return( TValue( image->GetPixel( v ) ) );
  49               else
  50                 return( TValue( -1 ) );
  51             }
  52
  53         protected:
  54           Identity( )
  55             : Superclass( )
  56             {
  57             }
  58           virtual ~Identity( )
  59             {
  60             }
  61
  62         private:
  63           // Purposely not implemented.
  64           Identity( const Self& other );
  65           Self& operator=( const Self& other );
  66         };
  67
  68       } // ecapseman
  69
  70     } // ecapseman
  71
  72   } // ecapseman
  73
  74 } // ecapseman
  75
  76 #endif // __fpa__Functors__Dijkstra__Identity__h__
  77 // eof - $RCSfile$