main.cc

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// ********************************************************************
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//
/// \author Evan Kim
/// \email evandde@gmail.com
/// \homepage evandde.github.io

#include "G4RunManagerFactory.hh"
#include "G4PhysListFactory.hh"
#include "G4UImanager.hh"
#include "G4VisExecutive.hh"
#include "G4UIExecutive.hh"
#include "QBBC.hh"

#include "DetectorConstruction.hh"
#include "ActionInitialization.hh"

namespace
{
    void PrintUsage()
    {
        G4cerr << " Usage: " << G4endl
               << " ProjectName [-option1 value1] [-option2 value2] ..." << G4endl;
        G4cerr << "\t--- Option lists ---"
               << "\n\t[-m] <Set macrofile> default: "
                  "vis.mac"
                  ", inputtype: string"
               << "\n\t[-t] <Set nThreads> default: 1, inputtype: int, Max: "
               << G4Threading::G4GetNumberOfCores()
               << "\n\t[-p] <Set physics> default: 'QBBC', inputtype: string"
               << G4endl;
    }
} // namespace

int main(int argc, char **argv)
{
    // Default setting for main() arguments
    G4String macroFilePath;
    G4int nThreads = 1;
    G4String physName;

    // Parsing main() Arguments
    for (G4int i = 1; i < argc; i = i + 2)
    {
        if (G4String(argv[i]) == "-m")
            macroFilePath = argv[i + 1];
        else if (G4String(argv[i]) == "-t")
            nThreads = G4UIcommand::ConvertToInt(argv[i + 1]);
        else if (G4String(argv[i]) == "-p")
            physName = argv[i + 1];
        else
        {
            PrintUsage();
            return 1;
        }
    }
    if (argc > 7)
    {
        PrintUsage();
        return 1;
    }

    // Set random engine and seed number
    G4Random::setTheEngine(new CLHEP::RanecuEngine);
    G4Random::setTheSeed(time(nullptr));

    // Construct the default run manager
    auto runManager = G4RunManagerFactory::CreateRunManager(
        nThreads == 1 ? G4RunManagerType::Serial : G4RunManagerType::Default, nThreads);

    // Set mandatory initialization classes
    runManager->SetUserInitialization(new DetectorConstruction);
    G4VModularPhysicsList *phys;
    if (physName.empty())
        phys = new QBBC;
    else
    {
        G4PhysListFactory factory;
        phys = factory.GetReferencePhysList(physName);
    }
    runManager->SetUserInitialization(phys);
    runManager->SetUserInitialization(new ActionInitialization);

    // Initialize run
    runManager->Initialize();

    // Initialize visualization
    auto visManager = new G4VisExecutive;
    visManager->Initialize();

    // Get the pointer to the User Interface manager
    auto UImanager = G4UImanager::GetUIpointer();

    // Process macro or start UI session
    if (macroFilePath.empty())
    {
        // interactive mode (if no macrofile)
        auto ui = new G4UIExecutive(argc, argv);
        UImanager->ApplyCommand("/control/execute vis.mac");
        ui->SessionStart();
        delete ui;
    }
    else
    {
        // batch mode
        G4String command = "/control/execute ";
        UImanager->ApplyCommand(command + macroFilePath);
    }

    // Job termination
    // 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;
}