BaseEvtVtxGenerator Class Reference

#include <BaseEvtVtxGenerator.h>

Inheritance diagram for BaseEvtVtxGenerator:

Public Member Functions
	BaseEvtVtxGenerator (const edm::ParameterSet &)
virtual TMatrixD const *	GetInvLorentzBoost () const =0
virtual HepMC::FourVector	newVertex (CLHEP::HepRandomEngine *) const =0
void	produce (edm::Event &, const edm::EventSetup &) override
	~BaseEvtVtxGenerator () override
Public Member Functions inherited from edm::stream::EDProducer<>
	EDProducer ()=default
bool	hasAbilityToProduceInLumis () const final
bool	hasAbilityToProduceInRuns () const final

Private Attributes
edm::EDGetTokenT< edm::HepMCProduct >	sourceToken

Additional Inherited Members
Public Types inherited from edm::stream::EDProducer<>
typedef CacheContexts< T... >	CacheTypes
typedef CacheTypes::GlobalCache	GlobalCache
typedef AbilityChecker< T... >	HasAbility
typedef CacheTypes::LuminosityBlockCache	LuminosityBlockCache
typedef LuminosityBlockContextT< LuminosityBlockCache, RunCache, GlobalCache >	LuminosityBlockContext
typedef CacheTypes::LuminosityBlockSummaryCache	LuminosityBlockSummaryCache
typedef CacheTypes::RunCache	RunCache
typedef RunContextT< RunCache, GlobalCache >	RunContext
typedef CacheTypes::RunSummaryCache	RunSummaryCache

Detailed Description

Definition at line 23 of file BaseEvtVtxGenerator.h.

Constructor & Destructor Documentation

BaseEvtVtxGenerator::BaseEvtVtxGenerator ( const edm::ParameterSet &  pset )

explicit

Definition at line 30 of file BaseEvtVtxGenerator.cc.

References Exception, edm::ParameterSet::getParameter(), and edm::Service< T >::isAvailable().

{
   Service<RandomNumberGenerator> rng;
   if ( ! rng.isAvailable()) {
     throw cms::Exception("Configuration")
       << "The BaseEvtVtxGenerator requires the RandomNumberGeneratorService\n"
          "which is not present in the configuration file. \n" 
          "You must add the service\n"
          "in the configuration file or remove the modules that require it.";
   }

   sourceToken=consumes<edm::HepMCProduct>(pset.getParameter<edm::InputTag>("src"));
   produces<edm::HepMCProduct>();
}

BaseEvtVtxGenerator::~BaseEvtVtxGenerator ( )

override

Definition at line 45 of file BaseEvtVtxGenerator.cc.

{
}

Member Function Documentation

virtual TMatrixD const* BaseEvtVtxGenerator::GetInvLorentzBoost ( ) const

pure virtual

This method - and the comment - is a left-over from COBRA-OSCAR time : return the last generated event vertex. If no vertex has been generated yet, a NULL pointer is returned.

Implemented in BetafuncEvtVtxGenerator, HLLHCEvtVtxGenerator, FlatEvtVtxGenerator, BeamProfileVtxGenerator, and GaussEvtVtxGenerator.

virtual HepMC::FourVector BaseEvtVtxGenerator::newVertex ( CLHEP::HepRandomEngine *  ) const

pure virtual

Implemented in BetafuncEvtVtxGenerator, HLLHCEvtVtxGenerator, FlatEvtVtxGenerator, BeamProfileVtxGenerator, and GaussEvtVtxGenerator.

void BaseEvtVtxGenerator::produce ( edm::Event &  evt, const edm::EventSetup &    )

override

Definition at line 49 of file BaseEvtVtxGenerator.cc.

References edm::Event::getByToken(), edm::RandomNumberGenerator::getEngine(), edm::HepMCProduct::GetEvent(), eostools::move(), edm::Event::put(), reco::return(), and edm::Event::streamID().

{
   edm::Service<edm::RandomNumberGenerator> rng;
   CLHEP::HepRandomEngine* engine = &rng->getEngine(evt.streamID());

   Handle<HepMCProduct> HepUnsmearedMCEvt ;
   
   evt.getByToken( sourceToken, HepUnsmearedMCEvt ) ;
   
   // Copy the HepMC::GenEvent
   HepMC::GenEvent* genevt = new HepMC::GenEvent(*HepUnsmearedMCEvt->GetEvent());
   std::unique_ptr<edm::HepMCProduct> HepMCEvt(new edm::HepMCProduct(genevt));
   // generate new vertex & apply the shift 
   //
   HepMCEvt->applyVtxGen( newVertex(engine) ) ;

   //HepMCEvt->LorentzBoost( 0., 142.e-6 );
   HepMCEvt->boostToLab( GetInvLorentzBoost(), "vertex" );
   HepMCEvt->boostToLab( GetInvLorentzBoost(), "momentum" );
   
   evt.put(std::move(HepMCEvt)) ;
      
   return ;
}

Member Data Documentation

edm::EDGetTokenT<edm::HepMCProduct> BaseEvtVtxGenerator::sourceToken

private

Definition at line 44 of file BaseEvtVtxGenerator.h.