--- /dev/null
+// =========================================================================
+// @author Leonardo Florez Valencia
+// @email florez-l@javeriana.edu.co
+// =========================================================================
+#ifndef __fpa__Functors__Dijkstra__Image__Identity__h__
+#define __fpa__Functors__Dijkstra__Image__Identity__h__
+
+#include <fpa/Functors/VertexFunction.h>
+
+namespace fpa
+{
+ namespace Functors
+ {
+ namespace Dijkstra
+ {
+ namespace Image
+ {
+ /**
+ */
+ template< class _TImage, class _TValue >
+ class Identity
+ : public fpa::Functors::VertexFunction< typename _TImage::IndexType, _TValue >
+ {
+ public:
+ typedef _TImage TImage;
+ typedef _TValue TValue;
+ typedef typename TImage::IndexType TVertex;
+ typedef fpa::Functors::VertexFunction< TVertex, TValue > Superclass;
+ typedef Identity Self;
+ typedef itk::SmartPointer< Self > Pointer;
+ typedef itk::SmartPointer< const Self > ConstPointer;
+
+ public:
+ itkNewMacro( Self );
+ itkTypeMacro(
+ fpa::Functors::Dijkstra::Image::Identity,
+ fpa::Functors::VertexFunction
+ );
+
+ public:
+ virtual TValue Evaluate( const TVertex& v, const TVertex& p ) const override
+ {
+ const TImage* image =
+ dynamic_cast< const TImage* >(
+ this->m_DataObject.GetPointer( )
+ );
+ if( image != NULL )
+ return( TValue( image->GetPixel( v ) ) );
+ else
+ return( TValue( -1 ) );
+ }
+
+ protected:
+ Identity( )
+ : Superclass( )
+ {
+ }
+ virtual ~Identity( )
+ {
+ }
+
+ private:
+ // Purposely not implemented.
+ Identity( const Self& other );
+ Self& operator=( const Self& other );
+ };
+
+ } // ecapseman
+
+ } // ecapseman
+
+ } // ecapseman
+
+} // ecapseman
+
+#endif // __fpa__Functors__Dijkstra__Identity__h__
+// eof - $RCSfile$