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[FrontAlgorithms.git] / lib / fpa / Base / Dijkstra.h

diff --git a/lib/fpa/Base/Dijkstra.h b/lib/fpa/Base/Dijkstra.h
index 602608eb9973cfbf0849cbd8db594b5b3a2b5d6f..d231c7c41da897886b69c63d97f0fca117908646 100644 (file)
--- a/lib/fpa/Base/Dijkstra.h
+++ b/lib/fpa/Base/Dijkstra.h
@@ -1,106 +1,101 @@
-#ifndef __FPA__BASE__DIJKSTRA__H__
-#define __FPA__BASE__DIJKSTRA__H__
+// =========================================================================
+// @author Leonardo Florez Valencia
+// @email florez-l@javeriana.edu.co
+// =========================================================================
 
-#include <vector>
-#include <fpa/Base/Algorithm.h>
+#ifndef __fpa__Base__Dijkstra__h__
+#define __fpa__Base__Dijkstra__h__
+
+#include <itkFunctionBase.h>
+#include <fpa/Base/MinimumSpanningTree.h>
+#include <fpa/Base/Functors/VertexParentBase.h>
 
 namespace fpa
 {
   namespace Base
   {
     /**
-     * Dijkstra is a front propagation algorithm that minimizes costs
-     *
-     * @param V  Vertex type.
-     * @param C  Vertex value type.
-     * @param R  Result value type.
-     * @param VC Vertex lexicographical compare.
-     * @param B  Base class for this algorithm. It should be any itk-based
-     *           filter (itk::ProcessObject).
-     *
      */
-    template< class V, class C, class R, class VC, class B >
+    template< class _TFilter, class _TMarksInterface, class _TSeedsInterface, class _TMST >
     class Dijkstra
-      : public Algorithm< V, C, R, VC, B >
+      : public _TFilter,
+        public _TMarksInterface,
+        public _TSeedsInterface
     {
     public:
-      typedef Dijkstra                         Self;
-      typedef Algorithm< V, C, R, VC, B >      Superclass;
-      typedef itk::SmartPointer< Self >        Pointer;
-      typedef itk::SmartPointer< const Self >  ConstPointer;
-
-      typedef typename Superclass::TVertex              TVertex;
-      typedef typename Superclass::TValue               TValue;
-      typedef typename Superclass::TResult              TResult;
-      typedef typename Superclass::TVertexCompare       TVertexCompare;
-      typedef typename Superclass::TMinimumSpanningTree TMinimumSpanningTree;
-
-      typedef typename Superclass::TStartEvent     TStartEvent;
-      typedef typename Superclass::TStartLoopEvent TStartLoopEvent;
-      typedef typename Superclass::TEndEvent       TEndEvent;
-      typedef typename Superclass::TEndLoopEvent   TEndLoopEvent;
-      typedef typename Superclass::TAliveEvent     TAliveEvent;
-      typedef typename Superclass::TFrontEvent     TFrontEvent;
-      typedef typename Superclass::TFreezeEvent    TFreezeEvent;
-
-      typedef typename Superclass::TStartBacktrackingEvent TStartBacktrackingEvent;
-      typedef typename Superclass::TEndBacktrackingEvent TEndBacktrackingEvent;
-      typedef typename Superclass::TBacktrackingEvent TBacktrackingEvent;
+      typedef Dijkstra                        Self;
+      typedef _TFilter                        Superclass;
+      typedef _TMarksInterface                TMarksInterface;
+      typedef _TSeedsInterface                TSeedsInterface;
+      typedef _TMST                           TMST;
+      typedef itk::SmartPointer< Self >       Pointer;
+      typedef itk::SmartPointer< const Self > ConstPointer;
+
+      typedef typename Superclass::TInputValue  TInputValue;
+      typedef typename Superclass::TOutputValue TOutputValue;
+      typedef typename Superclass::TVertex      TVertex;
+      typedef typename Superclass::TVertices    TVertices;
+
+      typedef itk::FunctionBase< TInputValue, TOutputValue > TIntensityFunctor;
+      typedef fpa::Base::Functors::VertexParentBase< TVertex, TOutputValue > TVertexFunctor;
 
     protected:
-      typedef typename Superclass::_TVertices      _TVertices;
-      typedef typename Superclass::_TCollision     _TCollision;
-      typedef typename Superclass::_TCollisionsRow _TCollisionsRow;
-      typedef typename Superclass::_TCollisions    _TCollisions;
-      typedef typename Superclass::_TNode          _TNode;
-      typedef typename Superclass::_TNodes         _TNodes;
-
-      struct _TQueueNode
+      struct _TNode
       {
         TVertex Vertex;
-        _TNode  Node;
-
-        // Make the min-heap behave as a max-heap
-        bool operator<( const _TQueueNode& other ) const
-          { return( other.Node.Result < this->Node.Result ); }
+        TVertex Parent;
+        TOutputValue Cost;
+        unsigned long FrontId;
+        _TNode( const TVertex& v, const TVertex& p, const unsigned long& fId )
+          {
+            this->Vertex = v;
+            this->Parent = p;
+            this->FrontId = fId;
+            this->Cost = TOutputValue( 0 );
+          }
+        bool operator<( const _TNode& b ) const
+          {
+            return( b.Cost < this->Cost );
+          }
       };
-      typedef std::vector< _TQueueNode > _TQueue;
 
     public:
-      itkTypeMacro( Dijkstra, Algorithm );
+      itkTypeMacro( Dijkstra, TFilter );
+
+    public:
+      TMST* GetMinimumSpanningTree( );
+      const TMST* GetMinimumSpanningTree( ) const;
+
+      const TIntensityFunctor* GetIntensityFunctor( ) const;
+      const TVertexFunctor* GetVertexFunctor( ) const;
+
+      void SetFunctor( TIntensityFunctor* functor );
+      void SetFunctor( TVertexFunctor* functor );
 
     protected:
       Dijkstra( );
       virtual ~Dijkstra( );
 
-      virtual TResult _Cost( const TVertex& v, const TVertex& p ) const = 0;
-
-      // Results-related abstract methods
-      virtual bool _ComputeNeighborResult(
-        TResult& result, const TVertex& neighbor, const TVertex& parent
-        ) const;
-
-      // Queue-related abstract methods
-      virtual bool _IsQueueEmpty( ) const;
-      virtual void _QueuePush( const TVertex& v, const _TNode& n );
-      virtual void _QueuePop( TVertex& v, _TNode& n );
-      virtual void _QueueClear( );
+      virtual void GenerateData( ) override;
 
     private:
-      // Purposely not implemented
       Dijkstra( const Self& other );
       Self& operator=( const Self& other );
 
     protected:
-      _TQueue m_Queue;
+      typename TIntensityFunctor::Pointer m_IntensityFunctor;
+      typename TVertexFunctor::Pointer m_VertexFunctor;
+      unsigned long m_MSTIndex;
     };
 
   } // ecapseman
 
 } // ecapseman
 
-#include <fpa/Base/Dijkstra.hxx>
+#ifndef ITK_MANUAL_INSTANTIATION
+#  include <fpa/Base/Dijkstra.hxx>
+#endif // ITK_MANUAL_INSTANTIATION
 
-#endif // __FPA__BASE__DIJKSTRA__H__
+#endif // __fpa__Base__Dijkstra__h__
 
 // eof - $RCSfile$