#ifndef __FPA__BASE__MINIMUMSPANNINGTREE__H__
#define __FPA__BASE__MINIMUMSPANNINGTREE__H__

#include <vector>
#include <itkSmartPointer.h>

namespace fpa
{
  namespace Base
  {
    /**
     */
    template< class V, class C, class B >
    class MinimumSpanningTree
      : public B
    {
    public:
      typedef MinimumSpanningTree             Self;
      typedef B                               Superclass;
      typedef itk::SmartPointer< Self >       Pointer;
      typedef itk::SmartPointer< const Self > ConstPointer;

      typedef V TVertex;
      typedef C TCollisions;

    protected:
      typedef std::vector< unsigned long > _TRow;
      typedef std::vector< _TRow >         _TMatrix;

    public:
      itkTypeMacro( MinimumSpanningTree, B );

      itkGetConstMacro( Collisions, TCollisions );

    public:
      void SetCollisions( const TCollisions& collisions );

      virtual void GetPath(
        std::vector< V >& path, const V& a, const V& b
        ) const;

    protected:
      MinimumSpanningTree( );
      virtual ~MinimumSpanningTree( );

      virtual void _Path( std::vector< V >& path, const V& a ) const;
      virtual long _FrontId( const V& v ) const = 0;
      virtual V _Parent( const V& v ) const = 0;

    private:
      // Purposely not implemented
      MinimumSpanningTree( const Self& other );
      Self& operator=( const Self& other );

    protected:
      TCollisions m_Collisions;
      _TMatrix    m_FrontPaths;
      static const unsigned long INF_VALUE;
    };

  } // ecapseman

} // ecapseman

#include <fpa/Base/MinimumSpanningTree.hxx>

#endif // __FPA__BASE__MINIMUMSPANNINGTREE__H__

// eof - $RCSfile$