Detector.h

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// Copyright 2019-2020 CERN and copyright holders of ALICE O2.
// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
// All rights not expressly granted are reserved.
//
// This software is distributed under the terms of the GNU General Public
// License v3 (GPL Version 3), copied verbatim in the file "COPYING".
//
// In applying this license CERN does not waive the privileges and immunities
// granted to it by virtue of its status as an Intergovernmental Organization
// or submit itself to any jurisdiction.
 
 
#ifndef ALICEO2_FT3_DETECTOR_H_
#define ALICEO2_FT3_DETECTOR_H_
 
#include "Rtypes.h" // for Int_t, Double_t, Float_t, Bool_t, etc
 
#include "DetectorsBase/Detector.h"           // for Detector
#include "DetectorsBase/GeometryManager.h"    // for getSensID
#include "DetectorsCommonDataFormats/DetID.h" // for Detector
#include "DataFormatsTRKFT3/Hit.h"            // for Hit
 
#include "TArrayD.h"        // for TArrayD
#include "TGeoManager.h"    // for gGeoManager, TGeoManager (ptr only)
#include "TLorentzVector.h" // for TLorentzVector
#include "TVector3.h"       // for TVector3
 
#include <unordered_map>
#include <vector>
 
class FairVolume;
class TGeoVolume;
 
class TParticle;
 
class TString;
 
namespace o2::ft3
{
class GeometryTGeo;
class FT3BaseParam;
class FT3Layer;
 
class Detector : public o2::base::DetImpl<Detector>
{
 public:
  Detector(Bool_t active);
 
  Detector();
 
  ~Detector() override;
 
  void InitializeO2Detector() override;
 
  Bool_t ProcessHits(FairVolume* v = nullptr) override;
 
  void Register() override;
 
  std::vector<o2::trkft3::Hit>* getHits(Int_t iColl) const
  {
    if (iColl == 0) {
      return mHits;
    }
    return nullptr;
  }
 
  void Reset() override;
 
  void ConstructGeometry() override;
 
  o2::trkft3::Hit* addHit(int trackID, int detID, const TVector3& startPos, const TVector3& endPos,
                          const TVector3& startMom, double startE, double endTime, double eLoss,
                          unsigned char startStatus, unsigned char endStatus);
 
  Int_t chipVolUID(Int_t id) const { return o2::base::GeometryManager::getSensID(o2::detectors::DetID::FT3, id); }
 
  void EndOfEvent() override;
 
  void FinishPrimary() override { ; }
  virtual void finishRun() { ; }
  void BeginPrimary() override { ; }
  void PostTrack() override { ; }
  void PreTrack() override { ; }
 
  static constexpr int IdxForwardDisks = 0;
  static constexpr int IdxBackwardDisks = 1;
  size_t getNumberOfLayers() const
  {
    if (mLayerName[IdxBackwardDisks].size() != mLayerName[IdxForwardDisks].size()) {
      LOG(fatal) << "Number of layers in the two directions are different! Returning 0.";
    }
    return mLayerName[IdxBackwardDisks].size();
  }
 
  void buildBasicFT3(const FT3BaseParam& param);
  void buildFT3V1();
  void buildFT3V3b();
  void buildFT3Scoping();
  void buildFT3NewVacuumVessel();
  void buildFT3ScopingV3();
 
 protected:
  std::array<std::vector<TString>, 2> mLayerName; // Two sets of layer names, one per direction (forward/backward)
 
 private:
  struct TrackData {               // this is transient
    bool mHitStarted;              
    unsigned char mTrkStatusStart; 
    TLorentzVector mPositionStart; 
    TLorentzVector mMomentumStart; 
    double mEnergyLoss;            
  } mTrackData;                    
 
  std::vector<o2::trkft3::Hit>* mHits;
 
  virtual void createMaterials();
 
  void createGeometry();
 
  void defineSensitiveVolumes();
 
  Detector(const Detector&);
 
  Detector& operator=(const Detector&);
 
  std::array<std::vector<FT3Layer>, 2> mLayers; // Two sets of layers, one per direction (forward/backward)
  bool mIsPipeActivated = true;                 
 
  template <typename Det>
  friend class o2::base::DetImpl;
  ClassDefOverride(Detector, 2);
};
 
} // namespace o2::ft3
 
#ifdef USESHM
namespace o2
{
namespace base
{
template <>
struct UseShm<o2::ft3::Detector> {
  static constexpr bool value = true;
};
} // namespace base
} // namespace o2
#endif
 
#endif