CaTS/include/RootIO.hh

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0025 //
0026 // CaTS (Calorimetry and Tracking Simulation)
0027 //
0028 // Authors: Hans Wenzel and Soon Yung Jun
0029 //          (Fermi National Accelerator Laboratory)
0030 //
0031 // History: October 18th, 2021 : first implementation
0032 //
0033 // ********************************************************************
0034 //
0035 /// \file RootIO.hh
0036 /// \brief Definition of the CaTS::RootIO class
0037
0038 #ifdef WITH_ROOT
0039 #pragma once
0040
0041 #include <G4Types.hh>
0042 #include <G4String.hh>
0043 #include "G4ThreadLocalSingleton.hh"
0044
0045 #include "G4VHit.hh"
0046 #include "G4VHitsCollection.hh"
0047 #include "Event.hh"
0048
0049 class G4Event;
0050 class TBranch;
0051 class TFile;
0052 class TTree;
0053
0054 class RootIO
0055 {
0056   friend class G4ThreadLocalSingleton<RootIO>;
0057
0058  public:
0059   static RootIO* GetInstance();
0060
0061   ~RootIO() = default;
0062   void Write(const G4Event* event);
0063   void Merge();
0064   void Close();
0065
0066  private:
0067   // Private constructor used only for the static instance
0068   RootIO();
0069
0070   // Split a string using the delimiter character
0071   std::vector<G4String> Split(const G4String& s, char delim);
0072
0073   // Add hits from sensitive detectors into the CaTS event data
0074   template<typename T>
0075   void AddHits(G4VHitsCollection* hc, Event* event_data);
0076
0077 private:
0078   G4String fFileName;
0079   TBranch* fEvtBranch{ nullptr };
0080   TFile* fFile{ nullptr };
0081   TTree* fTree{ nullptr };
0082 };
0083
0084 template<typename T>
0085 void RootIO::AddHits(G4VHitsCollection* hc, Event* event_data)
0086 {
0087   std::map<G4String, std::vector< G4VHit*>> *hcmap = event_data->GetHCMap();
0088   std::vector<G4VHit*> hitsVector;
0089   G4int NbHits = hc->GetSize();
0090   G4String hcname = hc->GetName();
0091
0092   for (G4int ii = 0; ii < NbHits; ++ii)
0093   {
0094     G4VHit* hit = hc->GetHit(ii);
0095     T* tpcHit = dynamic_cast<T*> (hit);
0096     hitsVector.push_back(tpcHit);
0097   }
0098   hcmap->insert(std::make_pair(hcname, hitsVector));
0099 }
0100
0101 #endif /* WITH_ROOT */