exgps.cc

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//
// ********************************************************************
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//
//
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#include "G4Types.hh"

#ifdef G4MULTITHREADED
#include "G4MTRunManager.hh"
#else
#include "G4RunManager.hh"
#endif

#include "G4UImanager.hh"

#include "G4UIExecutive.hh"
#include "G4VisExecutive.hh"

#include "GeometryConstruction.hh"
#include "PhysicsList.hh"
#include "ActionInitialization.hh"

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int main(int argc,char** argv) {

  //detect interactive mode (if no arguments) and define UI session
  G4UIExecutive* ui = nullptr;
  if (argc == 1) ui = new G4UIExecutive(argc,argv);

  // Construct the default run manager
#ifdef G4MULTITHREADED
  G4MTRunManager * runManager = new G4MTRunManager;
  G4int nThreads = G4Threading::G4GetNumberOfCores();
  if (argc==3) nThreads = G4UIcommand::ConvertToInt(argv[2]);
  runManager->SetNumberOfThreads(nThreads);
#else
  G4RunManager * runManager = new G4RunManager;
#endif

  //set mandatory initialization classes
  GeometryConstruction* detector = new GeometryConstruction;
  runManager->SetUserInitialization(detector);
  runManager->SetUserInitialization(new PhysicsList);

  runManager->SetUserInitialization(new ActionInitialization);

  //initialize visualization
  G4VisManager* visManager = nullptr;

  //get the pointer to the User Interface manager
  G4UImanager* UImanager = G4UImanager::GetUIpointer();

  if (ui)  {
   //interactive mode
   visManager = new G4VisExecutive;
   visManager->Initialize();
   UImanager->ApplyCommand("/control/execute vis.mac");
   ui->SessionStart();
   delete ui;
  }
  else  {
   //batch mode
   G4String command = "/control/execute ";
   G4String fileName = argv[1];
   UImanager->ApplyCommand(command+fileName);
  }

  //job termination
  delete visManager;
  delete runManager;
}

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