TrackInformation.h

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#ifndef SimG4Core_TrackInformation_H
#define SimG4Core_TrackInformation_H

#include "FWCore/Utilities/interface/Exception.h"
#include "G4VUserTrackInformation.hh"
#include "G4Allocator.hh"
#include "G4Track.hh"
#include "DataFormats/Math/interface/Vector3D.h"
#include "DataFormats/Math/interface/LorentzVector.h"
#include "FWCore/MessageLogger/interface/MessageLogger.h"

class TrackInformation : public G4VUserTrackInformation {
public:
  ~TrackInformation() override {}
  inline void *operator new(size_t);
  inline void operator delete(void *TrackInformation);

  bool storeTrack() const { return storeTrack_; }
  void storeTrack(bool v) {
    if (v)
      storeTrack_ = v;
    if (v == true)
      putInHistory();
  }

  bool isPrimary() const { return isPrimary_; }
  void isPrimary(bool v) { isPrimary_ = v; }

  bool hasHits() const { return hasHits_; }
  void hasHits(bool v) { hasHits_ = v; }

  bool isGeneratedSecondary() const { return isGeneratedSecondary_; }
  void isGeneratedSecondary(bool v) { isGeneratedSecondary_ = v; }

  bool isInHistory() const { return isInHistory_; }
  void putInHistory() { isInHistory_ = true; }

  bool isAncestor() const { return flagAncestor_; }
  void setAncestor() { flagAncestor_ = true; }

  // Calo section
  int getIDonCaloSurface() const { return idOnCaloSurface_; }
  void setIDonCaloSurface(int id, int ical, int last, int pdgID, double p) {
    idOnCaloSurface_ = id;
    idCaloVolume_ = ical;
    idLastVolume_ = last;
    caloSurfaceParticlePID_ = pdgID;
    caloSurfaceParticleP_ = p;
  }
  int getIDCaloVolume() const { return idCaloVolume_; }
  int getIDLastVolume() const { return idLastVolume_; }
  bool caloIDChecked() const { return caloIDChecked_; }
  void setCaloIDChecked(bool f) { caloIDChecked_ = f; }
  int caloSurfaceParticlePID() const { return caloSurfaceParticlePID_; }
  void setCaloSurfaceParticlePID(int id) { caloSurfaceParticlePID_ = id; }
  double caloSurfaceParticleP() const { return caloSurfaceParticleP_; }
  void setCaloSurfaceParticleP(double p) { caloSurfaceParticleP_ = p; }

  // Boundary crossing variables
  void setCrossedBoundary(const G4Track *track) {
    crossedBoundary_ = true;
    positionAtBoundary_ = math::XYZTLorentzVectorF(track->GetPosition().x() / CLHEP::cm,
                                                   track->GetPosition().y() / CLHEP::cm,
                                                   track->GetPosition().z() / CLHEP::cm,
                                                   track->GetGlobalTime());
    momentumAtBoundary_ = math::XYZTLorentzVectorF(track->GetMomentum().x() / CLHEP::GeV,
                                                   track->GetMomentum().y() / CLHEP::GeV,
                                                   track->GetMomentum().z() / CLHEP::GeV,
                                                   track->GetKineticEnergy() / CLHEP::GeV);
  }
  bool crossedBoundary() const { return crossedBoundary_; }
  const math::XYZTLorentzVectorF &getPositionAtBoundary() const { return positionAtBoundary_; }
  const math::XYZTLorentzVectorF &getMomentumAtBoundary() const { return momentumAtBoundary_; }
  bool startedInFineVolume() const { return startedInFineVolume_; }
  void setStartedInFineVolume(bool flag = true) {
    startedInFineVolume_ = flag;
    startedInFineVolumeIsSet_ = true;
  }
  bool startedInFineVolumeIsSet() { return startedInFineVolumeIsSet_; }

  // Generator information
  int genParticlePID() const { return genParticlePID_; }
  void setGenParticlePID(int id) { genParticlePID_ = id; }
  double genParticleP() const { return genParticleP_; }
  void setGenParticleP(double p) { genParticleP_ = p; }

  // remember the PID of particle entering the CASTOR detector. This is needed
  // in order to scale the hadronic response
  bool hasCastorHit() const { return hasCastorHit_; }
  void setCastorHitPID(const int pid) {
    hasCastorHit_ = true;
    castorHitPID_ = pid;
  }
  int getCastorHitPID() const { return castorHitPID_; }

  void Print() const override;

private:
  bool storeTrack_;
  bool isPrimary_;
  bool hasHits_;
  bool isGeneratedSecondary_;
  bool isInHistory_;
  bool flagAncestor_;
  int idOnCaloSurface_;
  int idCaloVolume_;
  int idLastVolume_;
  bool caloIDChecked_;
  bool crossedBoundary_;
  math::XYZTLorentzVectorF positionAtBoundary_;
  math::XYZTLorentzVectorF momentumAtBoundary_;
  bool startedInFineVolume_;
  bool startedInFineVolumeIsSet_;

  int genParticlePID_, caloSurfaceParticlePID_;
  double genParticleP_, caloSurfaceParticleP_;

  bool hasCastorHit_;
  int castorHitPID_;

  // Restrict construction to friends
  TrackInformation()
      : G4VUserTrackInformation(),
        storeTrack_(false),
        isPrimary_(false),
        hasHits_(false),
        isGeneratedSecondary_(false),
        isInHistory_(false),
        flagAncestor_(false),
        idOnCaloSurface_(0),
        idCaloVolume_(-1),
        idLastVolume_(-1),
        caloIDChecked_(false),
        crossedBoundary_(false),
        startedInFineVolume_(false),
        startedInFineVolumeIsSet_(false),
        genParticlePID_(-1),
        caloSurfaceParticlePID_(0),
        genParticleP_(0),
        caloSurfaceParticleP_(0),
        hasCastorHit_(false),
        castorHitPID_(0) {}
  friend class NewTrackAction;
};

extern G4ThreadLocal G4Allocator<TrackInformation> *fpTrackInformationAllocator;

inline void *TrackInformation::operator new(size_t) {
  if (!fpTrackInformationAllocator)
    fpTrackInformationAllocator = new G4Allocator<TrackInformation>;
  return (void *)fpTrackInformationAllocator->MallocSingle();
}

inline void TrackInformation::operator delete(void *trkInfo) {
  fpTrackInformationAllocator->FreeSingle((TrackInformation *)trkInfo);
}

#endif