#include <HGCalMulticlusteringImpl.h>

Public Member Functions
void	clusterize (const edm::PtrVector< l1t::HGCalCluster > &clustersPtr, l1t::HGCalMulticlusterBxCollection &multiclusters)

	HGCalMulticlusteringImpl (const edm::ParameterSet &conf)

bool	isPertinent (const l1t::HGCalCluster &clu, const l1t::HGCalMulticluster &mclu, double dR) const

Private Attributes
double	calibSF_

double	dr_

double	ptC3dThreshold_

Detailed Description

Definition at line 9 of file HGCalMulticlusteringImpl.h.

Constructor & Destructor Documentation

HGCalMulticlusteringImpl::HGCalMulticlusteringImpl ( const edm::ParameterSet & conf )

Definition at line 5 of file HGCalMulticlusteringImpl.cc.

References calibSF_, dr_, and ptC3dThreshold_.

                                                                                 :
     dr_(conf.getParameter<double>("dR_multicluster")),
     ptC3dThreshold_(conf.getParameter<double>("minPt_multicluster")),
     calibSF_(conf.getParameter<double>("calibSF_multicluster"))
 {    
     edm::LogInfo("HGCalMulticlusterParameters") << "Multicluster dR for Near Neighbour search: " << dr_;  
     edm::LogInfo("HGCalMulticlusterParameters") << "Multicluster minimum transverse-momentum: " << ptC3dThreshold_;
     edm::LogInfo("HGCalMulticlusterParameters") << "Multicluster global calibration factor: " << calibSF_;
 
 }

Member Function Documentation

void HGCalMulticlusteringImpl::clusterize	(	const edm::PtrVector< l1t::HGCalCluster > &	clustersPtr,
		l1t::HGCalMulticlusterBxCollection &	multiclusters
	)

Definition at line 35 of file HGCalMulticlusteringImpl.cc.

References edm::PtrVector< T >::begin(), calibSF_, edmIntegrityCheck::d, dr_, edm::PtrVector< T >::end(), mps_fire::i, isPertinent(), mag(), ptC3dThreshold_, and BXVector< T >::push_back().

 {
            
     std::vector<l1t::HGCalMulticluster> multiclustersTmp;
 
     int iclu = 0;
     for(edm::PtrVector<l1t::HGCalCluster>::const_iterator clu = clustersPtrs.begin(); clu != clustersPtrs.end(); ++clu, ++iclu){
         
         int imclu=0;
         vector<int> tcPertinentMulticlusters;
         for( const auto& mclu : multiclustersTmp ){
             if( this->isPertinent(**clu, mclu, dr_) ){
                 tcPertinentMulticlusters.push_back(imclu);
             }
             ++imclu;
         }
         if( tcPertinentMulticlusters.empty() ){
             multiclustersTmp.emplace_back( *clu );
         }
         else{
             unsigned minDist = 1;
             unsigned targetMulticlu = 0; 
             for( int imclu : tcPertinentMulticlusters ){
                 double d = ( multiclustersTmp.at(imclu).centreProj() - (*clu)->centreProj() ).mag() ;
                 if( d < minDist ){
                     minDist = d;
                     targetMulticlu = imclu;
                 }
             } 
 
             multiclustersTmp.at( targetMulticlu ).addConstituent( *clu );
             
         }        
     }
 
     /* making the collection of multiclusters */
     for( unsigned i(0); i<multiclustersTmp.size(); ++i ){
         math::PtEtaPhiMLorentzVector calibP4(  multiclustersTmp.at(i).pt() * calibSF_, 
                                                multiclustersTmp.at(i).eta(), 
                                                multiclustersTmp.at(i).phi(), 
                                                0. );
         // overwriting the 4p with the calibrated 4p     
         multiclustersTmp.at(i).setP4( calibP4 );
         if( multiclustersTmp.at(i).pt() > ptC3dThreshold_ ){
             multiclusters.push_back( 0, multiclustersTmp.at(i));  
         }
     }
     
 }

bool HGCalMulticlusteringImpl::isPertinent	(	const l1t::HGCalCluster &	clu,
		const l1t::HGCalMulticluster &	mclu,
		double	dR
	)		const

Definition at line 17 of file HGCalMulticlusteringImpl.cc.

References l1t::HGCalClusterT< C >::centreProj(), l1t::HGCalClusterT< C >::detId(), PFRecoTauDiscriminationAgainstElectronDeadECAL_cfi::dR, and mag().

Referenced by clusterize().

 {
     HGCalDetId cluDetId( clu.detId() );
     HGCalDetId firstClusterDetId( mclu.detId() );
     
     if( cluDetId.zside() != firstClusterDetId.zside() ){
         return false;
     }
     if( ( mclu.centreProj() - clu.centreProj() ).mag() < dR ){
         return true;
     }
     return false;
 
 }