RPCSimHit.h

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/*
  Copyright (C) 2002-2023 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef MUONG4SIMEVENT_RPCSimHit_H
#define MUONG4SIMEVENT_RPCSimHit_H
 
#include "GeoPrimitives/GeoPrimitives.h"
#include "GeneratorObjects/HepMcParticleLink.h"
 
#include <string>
 
//---------------------
// back to the situation of tag MuonSimEvent-00-00-25 to avoid
// uncompatibility between 8.0.2 and 8.2.0 ----->
// redundant time methods are present (globalTime() and meanTime() return the
// same time) --->NOT TO BE FIXED!!<----
 
class RPCSimHit final{
 
public:
    //
    // construction/destruction
    //
    // needed by athenaRoot
    RPCSimHit();
 
    // Destructor:
    ~RPCSimHit();
    RPCSimHit(int id, double time, const Amg::Vector3D& position);
    RPCSimHit(int id, double time, const Amg::Vector3D& position, const int truthBarcode);
    RPCSimHit(int id, double time,
          const Amg::Vector3D& prePosition,
          const int truthBarcode,
          const Amg::Vector3D& postPosition,
          const double energyDeposit,
          const double stepLength,
          const int particleEncoding,
          const double kineticEnergy);
    RPCSimHit(int id, double time,
          const Amg::Vector3D& prePosition,
          const HepMcParticleLink& hmpl,
          const Amg::Vector3D& postPosition,
          const double energyDeposit,
          const double stepLength,
          const int particleEncoding,
          const double kineticEnergy);
 
 
 
    //
    // member functions
    //
    double            globalTime()    const { return (double) m_globalTime; }
    const Amg::Vector3D& localPosition()    const { return m_localPosition; }
    const Amg::Vector3D& preLocalPosition() const { return m_localPosition; }
    const Amg::Vector3D& postLocalPosition() const { return m_localPostStepPosition; }
    double            energyDeposit() const { return static_cast<double>(m_energyDeposit); }
    double            prePostStepDistance()    const { return (m_localPostStepPosition-m_localPosition).mag(); }
    double            stepLength()    const { return m_stepLength; }
    int               particleEncoding() const { return m_particleEncoding; }
    double            kineticEnergy() const { return static_cast<double>(m_kineticEnergy); }
    int           RPCid()        const { return m_RPCid; }
    std::string       print()         const;
    bool operator< (const RPCSimHit& rhs) const
        { return m_RPCid < rhs.m_RPCid; }
    double meanTime() const;
 
    // truth barcode of the track which released this energy:
    int truthBarcode() const;
 
    // GenParticle::id of the track which released this energy:
    int truthID() const;
 
// link to the particle generating the hit
    const HepMcParticleLink& particleLink() const;
 
    void setGlobalTime( const double time ) { m_globalTime = time; }
 
private:
    //
    // member data
    //
    int m_RPCid;
    float     m_globalTime;
    Amg::Vector3D m_localPosition; // pre-step position
    HepMcParticleLink m_partLink;
    Amg::Vector3D m_localPostStepPosition; // post-step position
    float m_energyDeposit;  //Geant4 de/dx
    float m_stepLength;     //Geant4 stepLength
    int m_particleEncoding; // PDG id
    float m_kineticEnergy;  // kinetic energy of the particle
 
 
};
//inline methods
 
inline double RPCSimHit::meanTime() const
    { return (double) m_globalTime; }
 
inline const HepMcParticleLink& RPCSimHit::particleLink() const
    { return m_partLink; }
 
// open functions
 
inline float hitTime(const RPCSimHit& hit)
    { return (float) hit.meanTime(); }
 
#endif