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1 //
2 // ********************************************************************
3 // * License and Disclaimer *
4 // * *
5 // * The Geant4 software is copyright of the Copyright Holders of *
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24 // ********************************************************************
25 //
26 //---------------------------------------------------------------------
27 //* |\___/| *
28 //* ) ( *
29 //* =\ /= *
30 //* )===( *
31 //* / \ CaTS: Calorimeter and Tracker Simulation *
32 //* | | is a flexible and extend-able framework *
33 //* / \ for the simulation of various detector *
34 //* \ / systems *
35 //* \__ _/ https://github.com/hanswenzel/CaTS *
36 //* ( ( *
37 //* ) ) *
38 //* (_( *
39 //* CaTS also serves as an example that demonstrates how to use *
40 //* opticks from within Geant4 for the creation and propagation of *
41 //* optical photons. *
42 //* see https://bitbucket.org/simoncblyth/opticks.git). *
43 //* Ascii Art by Joan Stark: https://www.asciiworld.com/-Cats-2-.html *
44 //---------------------------------------------------------------------
45 //
46 /// \file readMscHits.cc
47 /// \brief example how to read the CaTS::MscHits
48 //
49 // Root headers
50 #include "TFile.h"
51 #include "TSystem.h"
52 #include "TTree.h"
53 #include "TH1.h"
54 #include <string>
55 // project headers
56 #include "Event.hh"
57 #include "MscHit.hh"
58 #include "G4ThreeVector.hh"
59
60 int main(int argc, char** argv)
61 {
62 // initialize ROOT
63 TSystem ts;
64 gSystem->Load("libCaTSClassesDict");
65 if(argc < 4)
66 {
67 G4cout << "Program requires 3 arguments: name of input file, name of "
68 "output file, Volume that sensitive detector is attached to"
69 << G4endl;
70 exit(1);
71 }
72 TFile* outfile = new TFile(argv[2], "RECREATE");
73 TFile fo(argv[1]);
74 Event* event = new Event();
75 TTree* Tevt = (TTree*) fo.Get("Events");
76 Tevt->SetBranchAddress("event.", &event);
77 TBranch* fevtbranch = Tevt->GetBranch("event.");
78 Int_t nevent = fevtbranch->GetEntries();
79 outfile->cd();
80 TH1F* theta = new TH1F("angle", "angle", 100, 0.0, 0.15);
81 std::string CollectionName = argv[3];
82 CollectionName = CollectionName + "_Msc_HC";
83 for(Int_t i = 0; i < nevent; i++)
84 {
85 fevtbranch->GetEntry(i);
86 auto* hcmap = event->GetHCMap();
87 for(const auto& ele : *hcmap)
88 {
89 if(ele.first.compare(CollectionName) == 0)
90 {
91 auto hits = ele.second;
92 G4int NbHits = hits.size();
93 for(G4int ii = 0; ii < NbHits; ii++)
94 {
95 MscHit* mscHit = dynamic_cast<MscHit*>(hits.at(ii));
96 G4ThreeVector invec(0, 0, 1.);
97 std::cout << std::setprecision(12) << mscHit->GetKinE() << " "
98 << std::setprecision(12) << mscHit->GetMomentum().getX()
99 << " " << std::setprecision(12)
100 << mscHit->GetMomentum().getY() << " "
101 << std::setprecision(12) << mscHit->GetMomentum().getZ()
102 << std::endl;
103 theta->Fill(invec.angle(mscHit->GetMomentum()) * 57.3);
104 }
105 }
106 }
107 }
108 outfile->Write();
109 }
110