P02/src/ExP02DetConstrReader.cc

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0025 //
0026 /// \file persistency/P02/src/ExP02DetConstrReader.cc
0027 /// \brief Implementation of the ExP02DetConstrReader class
0028 //
0029 //
0030 // ROOT
0031 #include "TFile.h"
0032 #include "TROOT.h"
0033 #include "TSystem.h"
0034
0035 // G4
0036 #include "ExP02GeoTree.hh"
0037
0038 #include "G4Element.hh"
0039 #include "G4PVPlacement.hh"
0040
0041 // local
0042 #include "ExP02DetConstrReader.hh"
0043
0044 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0045
0046 ExP02DetConstrReader::ExP02DetConstrReader() : G4VUserDetectorConstruction()
0047 {
0048   // initialize ROOT
0049   TSystem ts;
0050   gSystem->Load("libExP02ClassesDict");
0051 }
0052
0053 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0054
0055 ExP02DetConstrReader::~ExP02DetConstrReader() {}
0056
0057 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0058
0059 G4VPhysicalVolume* ExP02DetConstrReader::Construct()
0060 {
0061   ExP02GeoTree* geotree;
0062
0063   TFile fo("geo.root");
0064   fo.GetObject("my_geo", geotree);
0065
0066   return geotree->TopVol();
0067 }