// =========================================================================
// @author Leonardo Florez Valencia
// @email florez-l@javeriana.edu.co
// =========================================================================
#ifndef __fpa__Filters__CollisionMarksInterface__h__
#define __fpa__Filters__CollisionMarksInterface__h__

#include <utility>
#include <vector>
#include <fpa/Filters/BaseMarksInterface.h>

namespace fpa
{
  namespace Filters
  {
    /**
     */
    template< class _TTraits >
    class CollisionMarksInterface
      : public fpa::Filters::BaseMarksInterface< _TTraits >
    {
    public:
      typedef fpa::Filters::BaseMarksInterface< _TTraits > Superclass;
      typedef CollisionMarksInterface                      Self;
      typedef _TTraits TTraits;
      fpaTraitsMacro( typename TTraits );

      // Minigraph to represent collisions
      typedef std::pair< TVertex, bool >    TCollision;
      typedef std::vector< TCollision >     TCollisionsRow;
      typedef std::vector< TCollisionsRow > TCollisions;

    public:
      bool StopAtOneFront( ) const;
      void StopAtOneFrontOn( );
      void StopAtOneFrontOff( );
      void SetStopAtOneFront( bool v );

    protected:
      CollisionMarksInterface( itk::ProcessObject* f );
      virtual ~CollisionMarksInterface( );

      virtual bool _Collisions( const TVertex& a, const TVertex& b ) override;
      virtual void _InitCollisions( unsigned long nSeeds ) override;

    protected:
      bool         m_StopAtOneFront;
      TCollisions  m_Collisions;
      unsigned int m_NumberOfFronts;
      unsigned int m_NumberOfSeeds;
    };

  } // ecapseman

} // ecapseman

#ifndef ITK_MANUAL_INSTANTIATION
#  include <fpa/Filters/CollisionMarksInterface.hxx>
#endif // ITK_MANUAL_INSTANTIATION
#endif // __fpa__Filters__CollisionMarksInterface__h__
// eof - $RCSfile$