eventgenerator/particleGun/particleGun.cc

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0025 //
0026 /// \file particleGun.cc
0027 /// \brief Main program of the eventgenerator/particleGun example
0028
0029 #include "ActionInitialization.hh"
0030 #include "DetectorConstruction.hh"
0031 #include "PhysicsList.hh"
0032
0033 #include "G4RunManagerFactory.hh"
0034 #include "G4SteppingVerbose.hh"
0035 #include "G4Types.hh"
0036 #include "G4UIExecutive.hh"
0037 #include "G4UImanager.hh"
0038 #include "G4VisExecutive.hh"
0039 #include "Randomize.hh"
0040
0041 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.....
0042
0043 int main(int argc, char** argv)
0044 {
0045   // detect interactive mode (if no arguments) and define UI session
0046   G4UIExecutive* ui = 0;
0047   if (argc == 1) ui = new G4UIExecutive(argc, argv);
0048
0049   // choose the Random engine
0050   CLHEP::HepRandom::setTheEngine(new CLHEP::RanecuEngine);
0051
0052   // use G4SteppingVerboseWithUnits
0053   G4int precision = 4;
0054   G4SteppingVerbose::UseBestUnit(precision);
0055
0056   // construct the run manager
0057   auto runManager = G4RunManagerFactory::CreateRunManager();
0058   if (argc == 3) {
0059     G4int nThreads = G4UIcommand::ConvertToInt(argv[2]);
0060     runManager->SetNumberOfThreads(nThreads);
0061   }
0062   // set mandatory initialization classes
0063   DetectorConstruction* detector = new DetectorConstruction;
0064   runManager->SetUserInitialization(detector);
0065   runManager->SetUserInitialization(new PhysicsList);
0066
0067   runManager->SetUserInitialization(new ActionInitialization);
0068
0069   // initialize visualization
0070   G4VisManager* visManager = nullptr;
0071
0072   // get the pointer to the User Interface manager
0073   G4UImanager* UImanager = G4UImanager::GetUIpointer();
0074
0075   if (ui) {
0076     // interactive mode
0077     visManager = new G4VisExecutive;
0078     visManager->Initialize();
0079     UImanager->ApplyCommand("/control/execute vis.mac");
0080     ui->SessionStart();
0081     delete ui;
0082   }
0083   else {
0084     // batch mode
0085     G4String command = "/control/execute ";
0086     G4String fileName = argv[1];
0087     UImanager->ApplyCommand(command + fileName);
0088   }
0089
0090   // job termination
0091   delete visManager;
0092   delete runManager;
0093 }
0094
0095 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.....