PRD_TruthTrajectorySelectorID.h

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/*
  Copyright (C) 2002-2022 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef INDETTRUTHTOOLS_PRD_TRUTHTRAJECTORYSELECTORID_H
#define INDETTRUTHTOOLS_PRD_TRUTHTRAJECTORYSELECTORID_H

// PRD_TruthTrajectorySelectorID.h, (c) ATLAS Detector software
 
#include "AthenaBaseComps/AthAlgTool.h"
#include "TrkTruthTrackInterfaces/IPRD_TruthTrajectorySelector.h"
#include "TrkEventPrimitives/LocalParameters.h"
 
class ThreePointCircle {
    
    public :
        ThreePointCircle( const std::vector<Amg::Vector3D>& vecPoints);

        ~ThreePointCircle();
               
        const Amg::Vector2D& center() const;
        const Amg::Translation3D* frameTranslation() const;
        
        //assignment is not safe unless a deep copy is made, so delete
        ThreePointCircle & operator = (const ThreePointCircle &) = delete;
        //copy is not safe unless a deep copy is made, so delete
        ThreePointCircle(const ThreePointCircle &) = delete;
      
        
        /* d0, z0, eta, phi, pt */
        double d0() const;
        double z0() const;
        double phi0() const;
        double eta() const;
        double pT() const;
        double radius() const;
        
    private :
        void constructCircle(const Amg::Vector3D&, const Amg::Vector3D&, const Amg::Vector3D&);
      // the reference point
    Amg::Translation3D*     m_translation;
      // the parameters
        double  m_d0, m_z0, m_phi0, m_eta, m_pt;
        double  m_radius{};
        Amg::Vector2D  m_center;
        
};
 
inline double ThreePointCircle::d0() const { return m_d0; }
inline double ThreePointCircle::z0() const { return m_z0; }
inline double ThreePointCircle::phi0() const { return m_phi0; }
inline double ThreePointCircle::eta() const { return m_eta; }
inline double ThreePointCircle::pT() const { return m_pt; }
inline double ThreePointCircle::radius() const { return m_radius; }
 
inline const Amg::Vector2D& ThreePointCircle::center() const { return m_center; }
 
inline const Amg::Translation3D* ThreePointCircle::frameTranslation() const { return m_translation; }
 
 
class AtlasDetectorID;
 
namespace InDet {
    class PRD_TruthTrajectorySelectorID : public AthAlgTool, virtual public Trk::IPRD_TruthTrajectorySelector {
 
    public:
        //** Constructor with parameters */
        PRD_TruthTrajectorySelectorID( const std::string& t, const std::string& n, const IInterface* p );
        
        ~PRD_TruthTrajectorySelectorID() {}
 
        // Athena algtool's Hooks
        StatusCode  initialize();
        StatusCode  finalize();
  
        virtual bool pass( const Trk::PRD_TruthTrajectory & ) const;
    
    private:
        const AtlasDetectorID* m_atlasId{};
    };
}
 
#endif