TestEm1.cc

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/// \file electromagnetic/TestEm1/TestEm1.cc
/// \brief Main program of the electromagnetic/TestEm1 example
//
//
//
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#include "G4Types.hh"
 
#include "G4RunManagerFactory.hh"
#include "G4UImanager.hh"
#include "G4SteppingVerbose.hh"
#include "Randomize.hh"
 
#include "DetectorConstruction.hh"
#include "PhysicsList.hh"
#include "ActionInitialization.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); }
 
  //use G4SteppingVerboseWithUnits
  G4int precision = 4;
  G4SteppingVerbose::UseBestUnit(precision);
 
  //construct the run manager
  auto runManager = G4RunManagerFactory::CreateRunManager();
  if (argc==3) {
     G4int nThreads = G4UIcommand::ConvertToInt(argv[2]);
     runManager->SetNumberOfThreads(nThreads);
  }
 
  //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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