examplePar02.cc

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// $Id:$
//
// 
// --------------------------------------------------------------
//      GEANT 4 - examplePar02
// --------------------------------------------------------------
// Comments
//
// Example of a main program making use of track smearing.
//
// Note: for the time being, the program runs only in sequential mode,
//       because the histogram manager - i.e. the class Par02Output -
//       is a singleton...
//
//-------------------------------------------------------------------

#include "G4Types.hh"

#include "G4UImanager.hh"
#ifdef G4MULTITHREADED
#include "G4MTRunManager.hh"
#else
#include "G4RunManager.hh"
#endif

#include "Par02DetectorConstruction.hh"
#include "Par02PhysicsList.hh"
#include "Par02ActionInitialization.hh"

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

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

  // Instantiate G4UIExecutive if interactive mode
  G4UIExecutive* ui = nullptr;
  if ( argc == 1 ) {
    ui = new G4UIExecutive(argc, argv);
  }

  //-------------------------------
  // Initialization of Run manager
  //-------------------------------
  #ifdef G4MULTITHREADED
  G4MTRunManager* runManager = new G4MTRunManager;
  runManager->SetNumberOfThreads(4);
  G4cout<<"+-------------------------------------------------------+"<<G4endl;
  G4cout<<"|              Constructing MT run manager              |"<<G4endl;
  G4cout<<"+-------------------------------------------------------+"<<G4endl;
  #else
  G4RunManager* runManager = new G4RunManager;
  G4cout<<"+-------------------------------------------------------+"<<G4endl;
  G4cout<<"|        Constructing sequential run manager            |"<<G4endl;
  G4cout<<"+-------------------------------------------------------+"<<G4endl;
  #endif

  // Detector/mass geometry:
  G4VUserDetectorConstruction* detector = new Par02DetectorConstruction();
  runManager->SetUserInitialization( detector );
  
  // PhysicsList (including G4FastSimulationManagerProcess)
  G4VUserPhysicsList* physicsList = new Par02PhysicsList;
  runManager->SetUserInitialization( physicsList );

  //-------------------------------
  // UserAction classes
  //-------------------------------
  runManager->SetUserInitialization( new Par02ActionInitialization );

  // Initialize Run manager
  runManager->Initialize();

  //----------------
  // Visualization:
  //----------------
  G4cout << "Instantiating Visualization Manager......." << G4endl;
  G4VisManager* visManager = new G4VisExecutive;
  visManager->Initialize();

  if ( ui ) {
    //--------------------------
    // Define (G)UI
    //--------------------------
    ui->SessionStart();
    delete ui;
  } else {
    G4String command = "/control/execute ";
    G4String fileName = argv[1];
    G4UImanager * UImanager = G4UImanager::GetUIpointer();
    UImanager->ApplyCommand( command+fileName );
  }

  // Free the store: user actions, physics_list and detector_description are
  //                 owned and deleted by the run manager, so they should not
  //                 be deleted in the main() program !

  delete visManager;
  delete runManager;

  return 0;
}