#include <BesHepMCInterface.h>

Inheritance diagram for BesHepMCInterface:

Public Member Functions
	BesHepMCInterface ()

	~BesHepMCInterface ()

HepMC::GenEvent *	GenerateHepMCEvent ()

Public Member Functions inherited from G4HepMCInterface
void	HepMC2G4 (HepMC::GenEvent hepmcevt, G4Event g4event)

void	Print (const HepMC::GenEvent *hepmcevt)

G4int	CheckType (const HepMC::GenEvent *hepmcevt)

void	Boost (HepMC::GenEvent *hepmcevt)

void	PrintHPlist ()

G4int	GetLogLevel ()

void	SetLogLevel (G4int level)

	G4HepMCInterface ()

virtual	~G4HepMCInterface ()

HepMC::GenEvent *	GetHepMCGenEvent () const

virtual void	GeneratePrimaryVertex (G4Event *anEvent)

Additional Inherited Members
Public Attributes inherited from G4HepMCInterface
std::vector< G4HepMCParticle * >	HPlist

virtual HepMC::GenEvent *	GenerateHepMCEvent ()

Protected Attributes inherited from G4HepMCInterface
HepMC::GenEvent *	hepmcEvent

G4int	m_logLevel

Detailed Description

Definition at line 9 of file BesHepMCInterface.h.

Constructor & Destructor Documentation

◆ BesHepMCInterface()

BesHepMCInterface::BesHepMCInterface ( )

Definition at line 12 of file BesHepMCInterface.cpp.

{
  p_evtSvc = 0;
}

◆ ~BesHepMCInterface()

BesHepMCInterface::~BesHepMCInterface ( )

Definition at line 16 of file BesHepMCInterface.cpp.

{
    //std::cout<< "\b the BesHepMCInterface is being destroyed "<<std::endl;
}

Member Function Documentation

◆ GenerateHepMCEvent()

HepMC::GenEvent * BesHepMCInterface::GenerateHepMCEvent ( )

virtual

Reimplemented from G4HepMCInterface.

Definition at line 21 of file BesHepMCInterface.cpp.

{
  
  if (p_evtSvc == 0) {     
    //std::cout<<" standard interface to EvtDataSvc for retrieving HepMC events"<<std::endl;
    ISvcLocator* svcLocator = Gaudi::svcLocator(); // from Bootstrap
    StatusCode sc=svcLocator->service("EventDataSvc", p_evtSvc);
    if (sc.isFailure()) 
    {
        //std::cout<<"BesHepMCInterface could not access EventDataSvc!!"<<std::endl;
    }
  }
    int n = 0;
  //std::cout <<" BesHepMCInterface::GenerateAnEvent "<<std::endl;
 
    SmartDataPtr<McGenEventCol> mcCollptr( p_evtSvc, "/Event/Gen");
 
    if ( mcCollptr != 0 ) {
      //std::cout <<" could retrieve the collection "<<std::endl;
 
      n = mcCollptr->size();
      
      //std::cout <<" nr of events "<<n<<std::endl;
 
      McGenEventCol::const_iterator it = mcCollptr->begin();
 
      McGenEvent* mcEvent = (McGenEvent* ) (*it);   
      // getting only the first event here.     
      // std::cout <<"iterator"<<std::endl;
        
      HepMC::GenEvent *p_evt;
        
      //std::cout <<"hepmc event"<<std::endl;
      p_evt = mcEvent->getGenEvt();
      //std::cout << "eventNumber = " << p_evt-> event_number()  << std::endl;
 
      //std::cout << " BesHepMCInterface:: --> " <<std::endl;
      //std::cout << " particles_size = " << p_evt->particles_size() 
        //    << " vertices_size = " << p_evt->vertices_size()
        //    << std::endl;
 
      //std::cout <<"got it"<<std::endl;
          
      return p_evt;
    }
 
    else {
      std::cout << "no McGenEventCollection found."  << std::endl;
    }     
      return 0;
}

Referenced by G4SvcRunManager::GenerateEvent().

The documentation for this class was generated from the following files: