ITrkDistanceFinder.h

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/*
  Copyright (C) 2002-2019 CERN for the benefit of the ATLAS collaboration
*/
 
// ITrkDistanceFinder.h, (c) ATLAS Detector software 2006
 
#ifndef TRKVERTEXSEEDFINDERUTILS_ITRKDISTANCEFINDER_H
#define TRKVERTEXSEEDFINDERUTILS_ITRKDISTANCEFINDER_H
 
#include "GaudiKernel/IAlgTool.h"
#include "TrkParameters/TrackParameters.h"
#include <optional>
 
//Amg
#include "GeoPrimitives/GeoPrimitives.h"
 
namespace Trk
{
 
  class Track;
  class TrackParticleBase;
 
  class ITrkDistanceFinder : virtual public IAlgTool {
 
     public:
       typedef std::pair<Amg::Vector3D,Amg::Vector3D> TwoPoints;
 
       DeclareInterfaceID( ITrkDistanceFinder, 1, 0 );
 
       virtual ~ITrkDistanceFinder(){};
 
       virtual std::optional<TwoPoints>
       CalculateMinimumDistance(const Trk::Perigee &, const Trk::Perigee &) const = 0;
 
       virtual std::optional<TwoPoints>
       CalculateMinimumDistance(const  Trk::Track &, const Trk::Track &) const = 0;
       
       virtual std::optional<TwoPoints>
       CalculateMinimumDistance(const  Trk::TrackParticleBase &, const Trk::TrackParticleBase &) const = 0;
 
  };
}
 
#endif