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

diff --git a/lib/fpa/Base/Dijkstra.hxx b/lib/fpa/Base/Dijkstra.hxx
index 7d652372e1a9adbadf6171fb438967fe339f8aa0..df9c75e5d07cbc994b5a4db3966bd879eabdfcc4 100644 (file)
--- a/lib/fpa/Base/Dijkstra.hxx
+++ b/lib/fpa/Base/Dijkstra.hxx
@@ -1,81 +1,94 @@
-#ifndef __FPA__BASE__DIJKSTRA__HXX__
-#define __FPA__BASE__DIJKSTRA__HXX__
+#ifndef __fpa__Base__Dijkstra__hxx__
+#define __fpa__Base__Dijkstra__hxx__
 
 #include <algorithm>
+#include <limits>
 
 // -------------------------------------------------------------------------
-template< class V, class C, class R, class B >
-fpa::Base::Dijkstra< V, C, R, B >::
-Dijkstra( )
-  : Superclass( )
+template< class _TSuperclass, class _TMST >
+_TMST* fpa::Base::Dijkstra< _TSuperclass, _TMST >::
+GetMinimumSpanningTree( )
 {
+  return(
+    dynamic_cast< _TMST* >(
+      this->itk::ProcessObject::GetOutput( this->m_MSTIndex )
+      )
+    );
 }
 
 // -------------------------------------------------------------------------
-template< class V, class C, class R, class B >
-fpa::Base::Dijkstra< V, C, R, B >::
-~Dijkstra( )
+template< class _TSuperclass, class _TMST >
+const _TMST* fpa::Base::Dijkstra< _TSuperclass, _TMST >::
+GetMinimumSpanningTree( ) const
 {
+  return(
+    dynamic_cast< const _TMST* >(
+      this->itk::ProcessObject::GetOutput( this->m_MSTIndex )
+      )
+    );
 }
 
 // -------------------------------------------------------------------------
-template< class V, class C, class R, class B >
-bool fpa::Base::Dijkstra< V, C, R, B >::
-_ComputeNeighborResult(
-  TResult& result, const TVertex& neighbor, const TVertex& parent
-  ) const
+template< class _TSuperclass, class _TMST >
+fpa::Base::Dijkstra< _TSuperclass, _TMST >::
+Dijkstra( )
+  : Superclass( )
 {
-  result  = this->_Cost( neighbor, parent );
-  result *= TResult( this->_Distance( neighbor, parent ) );
-
-  _TNode pn = this->_Node( parent );
-  if( pn.Label == Self::AliveLabel )
-    result += pn.Result;
-
-  return( true );
+  this->m_InitResult = TOutput( 0 );
+  this->m_MSTIndex = this->GetNumberOfRequiredOutputs( );
+  this->SetNumberOfRequiredOutputs( this->m_MSTIndex + 1 );
+  this->itk::ProcessObject::SetNthOutput( this->m_MSTIndex, _TMST::New( ) );
 }
 
 // -------------------------------------------------------------------------
-template< class V, class C, class R, class B >
-bool fpa::Base::Dijkstra< V, C, R, B >::
-_IsQueueEmpty( ) const
+template< class _TSuperclass, class _TMST >
+fpa::Base::Dijkstra< _TSuperclass, _TMST >::
+~Dijkstra( )
 {
-  return( this->m_Queue.empty( ) );
 }
 
 // -------------------------------------------------------------------------
-template< class V, class C, class R, class B >
-void fpa::Base::Dijkstra< V, C, R, B >::
-_QueuePush( const _TNode& n )
+template< class _TSuperclass, class _TMST >
+void fpa::Base::Dijkstra< _TSuperclass, _TMST >::
+_AfterGenerateData( )
 {
-  this->m_Queue.push_back( n );
-  std::push_heap(
-    this->m_Queue.begin( ), this->m_Queue.end( ), Self::m_NodeCompare
-    );
+  this->Superclass::_AfterGenerateData( );
+
+  auto mst = this->GetMinimumSpanningTree( );
+  mst->ClearSeeds( );
+  for( auto s = this->m_Seeds.begin( ); s != this->m_Seeds.end( ); ++s )
+    mst->AddSeed( s->Vertex );
+  mst->SetCollisions( this->m_Collisions );
 }
 
 // -------------------------------------------------------------------------
-template< class V, class C, class R, class B >
-typename fpa::Base::Dijkstra< V, C, R, B >::
-_TNode fpa::Base::Dijkstra< V, C, R, B >::
-_QueuePop( )
+template< class _TSuperclass, class _TMST >
+void fpa::Base::Dijkstra< _TSuperclass, _TMST >::
+_UpdateResult( const _TQueueNode& n )
 {
-  _TNode n = this->m_Queue.front( );
-  std::pop_heap(
-    this->m_Queue.begin( ), this->m_Queue.end( ), Self::m_NodeCompare
-    );
-  this->m_Queue.pop_back( );
-  return( n );
+  this->Superclass::_UpdateResult( n );
+  this->GetMinimumSpanningTree( )->SetParent( n.Vertex, n.Parent );
 }
 
 // -------------------------------------------------------------------------
-template< class V, class C, class R, class B >
-void fpa::Base::Dijkstra< V, C, R, B >::
-_QueueClear( )
+template< class _TSuperclass, class _TMST >
+bool fpa::Base::Dijkstra< _TSuperclass, _TMST >::
+_UpdateValue( _TQueueNode& v, const _TQueueNode& p )
 {
-  this->m_Queue.clear( );
+  v.Result = this->_GetInputValue( p.Vertex, v.Vertex );
+  if( v.Result >= TOutput( 0 ) )
+  {
+    v.Result += p.Result;
+    return( true );
+  }
+  else
+  {
+    v.Result = this->m_InitResult;
+    return( false );
+
+  } // fi
 }
 
-#endif // __FPA__BASE__DIJKSTRA__HXX__
+#endif // __fpa__Base__Dijkstra__hxx__
 
 // eof - $RCSfile$