EvtExternalGenList.cpp

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#include "EvtGenExternal/EvtExternalGenList.hh"

#include "EvtGenExternal/EvtExternalGenFactory.hh"
#include "EvtGenExternal/EvtPHOTOS.hh"
#include "EvtGenExternal/EvtPythia.hh"
#include "EvtGenExternal/EvtTauola.hh"

EvtExternalGenList::EvtExternalGenList( bool convertPythiaCodes,
                                        std::string pythiaXmlDir,
                                        std::string photonType,
                                        bool useEvtGenRandom )
{
    // Instantiate the external generator factory
    EvtExternalGenFactory* extFactory = EvtExternalGenFactory::getInstance();

    // Define the external generator "engines" here
    extFactory->definePhotosGenerator( photonType, useEvtGenRandom );

    if ( pythiaXmlDir.size() < 1 ) {
        // If we have no string defined, check the value of the
        // PYTHIA8DATA environment variable which should be set to the
        // xmldoc Pythia directory
        char* pythiaDataDir = getenv( "PYTHIA8DATA" );
        if ( pythiaDataDir != 0 ) {
            pythiaXmlDir = pythiaDataDir;
        }
    }

    extFactory->definePythiaGenerator( pythiaXmlDir, convertPythiaCodes,
                                       useEvtGenRandom );

    extFactory->defineTauolaGenerator( useEvtGenRandom );
}

EvtExternalGenList::~EvtExternalGenList()
{
}

EvtAbsRadCorr* EvtExternalGenList::getPhotosModel()
{
    // Define the Photos model, which uses the EvtPhotosEngine class.
    EvtPHOTOS* photosModel = new EvtPHOTOS();
    return photosModel;
}

std::list<EvtDecayBase*> EvtExternalGenList::getListOfModels()
{
    // Create the Pythia and Tauola models, which use their own engine classes.
    EvtPythia* pythiaModel = new EvtPythia();
    EvtTauola* tauolaModel = new EvtTauola();

    std::list<EvtDecayBase*> extraModels;
    extraModels.push_back( pythiaModel );
    extraModels.push_back( tauolaModel );

    // Return the list of models
    return extraModels;
}