SeedNewtonTrkDistanceFinder.h

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/*
  Copyright (C) 2002-2019 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef TRKVERTEXSEEDFINDERUTILS_SEEDNEWTONTRKDISTANCEFINDER_H
#define TRKVERTEXSEEDFINDERUTILS_SEEDNEWTONTRKDISTANCEFINDER_H
 
#include "GaudiKernel/ToolHandle.h"
#include "TrkVertexSeedFinderUtils/ITrkDistanceFinder.h"
#include "TrkVertexSeedFinderUtils/SeedFinderParamDefs.h" // For TwoPoints
#include "AthenaBaseComps/AthAlgTool.h"
#include "TrkParameters/TrackParameters.h"
#include <atomic>
 
namespace Trk
{
 
  class Trk2dDistanceSeeder;
  class NewtonTrkDistanceFinder;
 
  class SeedNewtonTrkDistanceFinder final: public extends<AthAlgTool, ITrkDistanceFinder>
  {
  public:
    virtual StatusCode initialize() override;
    virtual StatusCode finalize() override;
 
    //default constructor due to Athena interface
    SeedNewtonTrkDistanceFinder(const std::string& t, const std::string& n, const IInterface*  p);
    
    //destructor
    virtual ~SeedNewtonTrkDistanceFinder();
 
    virtual std::optional<TwoPoints>
    CalculateMinimumDistance(const Trk::Perigee &, const Trk::Perigee &) const override final;
    
    virtual std::optional<TwoPoints>
    CalculateMinimumDistance(const  Trk::Track &, const Trk::Track &) const override final;
 
    virtual std::optional<TwoPoints>
    CalculateMinimumDistance(const  Trk::TrackParticleBase &, const Trk::TrackParticleBase &) const override final;
    
        
  private:
    ToolHandle<Trk2dDistanceSeeder> m_2ddistanceseeder;
    ToolHandle<NewtonTrkDistanceFinder> m_distancefinder;
    mutable std::atomic<int> m_numberOfMinimizationFailures;
  };
}
#endif