/afs/cern.ch/work/a/aaltunda/public/www/CMSSW_6_2_7/src/MuonAnalysis/MuonAssociators/interface/MatcherByPullsAlgorithm.h

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#ifndef MuonAnalysis_MuonAssociators_src_MatcherByPullsAlgorithm_h
#define MuonAnalysis_MuonAssociators_src_MatcherByPullsAlgorithm_h
// -*- C++ -*-
//
// Package:    MuonAnalysis/MuonAssociators
// Class:      MatcherByPullsAlgorithm
// 
//
// Original Author:  Giovanni Petrucciani (SNS Pisa and CERN PH-CMG)
//         Created:  Sun Nov 16 16:14:09 CET 2008
// $Id: MatcherByPullsAlgorithm.h,v 1.2 2009/11/05 13:20:19 gpetrucc Exp $
//
//

#include <string>
#include <algorithm>
#include <vector>
#include "FWCore/ParameterSet/interface/ParameterSet.h"

#include "DataFormats/TrackReco/interface/Track.h"
#include "DataFormats/RecoCandidate/interface/RecoCandidate.h"
#include "DataFormats/HepMCCandidate/interface/GenParticle.h"
#include "DataFormats/CLHEP/interface/AlgebraicObjects.h"

//
// class decleration

class MatcherByPullsAlgorithm {
    public:
        explicit MatcherByPullsAlgorithm(const edm::ParameterSet&);
        ~MatcherByPullsAlgorithm();

        std::pair<bool,float> match(const reco::Track &tk, 
                const reco::Candidate &mc, 
                const AlgebraicSymMatrix55 &invertedCovariance) const ;

        std::pair<int,float>  match(const reco::RecoCandidate &src, 
                const std::vector<reco::GenParticle> &cands,
                const std::vector<uint8_t>           &good) const ;

        void matchMany(const reco::RecoCandidate &src,
                const std::vector<reco::GenParticle> &cands,
                const std::vector<uint8_t>           &good,
                std::vector<std::pair<double, int> > &matchesToFill) const ;

        std::pair<int,float>  match(const reco::Track &src, 
                const std::vector<reco::GenParticle> &cands,
                const std::vector<uint8_t>           &good) const ;

        void matchMany(const reco::Track &src,
                const std::vector<reco::GenParticle> &cands,
                const std::vector<uint8_t>           &good,
                std::vector<std::pair<double, int> > &matchesToFill) const ;


        void fillInvCov(const reco::Track &tk, AlgebraicSymMatrix55 &invCov) const ;
    private:
        const reco::Track *   track(const reco::RecoCandidate &src) const ;

        enum TrackChoice { StaTrack, TrkTrack, GlbTrack };

        TrackChoice track_;

        double dr2_;

        double cut_;

        bool diagOnly_;

        bool useVertex_;  

};

#endif