TestEm1.cc

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#include "G4Types.hh"

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

#include "G4UImanager.hh"
#include "Randomize.hh"

#include "DetectorConstruction.hh"
#include "PhysicsList.hh"
#include "ActionInitialization.hh"
#include "SteppingVerbose.hh"

#include "G4UIExecutive.hh"
#include "G4VisExecutive.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 = 4;
    if (argc==3) nThreads = G4UIcommand::ConvertToInt(argv[2]);
    runManager->SetNumberOfThreads(nThreads);
#else
    G4VSteppingVerbose::SetInstance(new SteppingVerbose);
    G4RunManager* runManager = new G4RunManager;
#endif

  //set mandatory initialization classes
  DetectorConstruction* det = new DetectorConstruction;
  runManager->SetUserInitialization(det);

  PhysicsList* phys = new PhysicsList(det);
  runManager->SetUserInitialization(phys);

  //set user action classes
  runManager->SetUserInitialization(new ActionInitialization(det));

  //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();
   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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