JetMatching.h

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#ifndef GeneratorInterface_PartonShowerVeto_JetMatching_h
#define GeneratorInterface_PartonShowerVeto_JetMatching_h

#include <memory>
#include <vector>
#include <string>
#include <set>

// #include <HepMC/GenEvent.h>
// #include <HepMC/SimpleVector.h>

#include "FWCore/ParameterSet/interface/ParameterSet.h"

#include "fastjet/ClusterSequence.hh"  // gives both PseudoJet & JetDefinition
// #include "fastjet/Selector.hh"

namespace lhef {

  class LHERunInfo;
  class LHEEvent;
  class JetInput;
  // class JetClustering;
}  // namespace lhef

namespace gen {

  class JetMatching {
  public:
    JetMatching(const edm::ParameterSet& params);
    virtual ~JetMatching();

    /*
    struct JetPartonMatch {
        JetPartonMatch(const HepMC::FourVector  &parton,
                       const HepMC::FourVector  &jet,
                       double           delta,
                       int          pdgId) :
            parton(parton), jet(jet),
            delta(delta), pdgId(pdgId) {}

        JetPartonMatch(const HepMC::FourVector  &parton,
                       int          pdgId) :
            parton(parton), delta(-1.0), pdgId(pdgId) {}

        JetPartonMatch(const HepMC::FourVector &jet) :
            jet(jet), delta(-1.0), pdgId(0) {}

        inline bool isMatch() const { return delta >= 0 && pdgId; }
        inline bool hasParton() const { return pdgId; }
        inline bool hasJet() const { return delta >= 0 || !pdgId; }

        HepMC::FourVector   parton;
        HepMC::FourVector   jet;
        double          delta;
        int         pdgId;
    };
*/
    virtual void init(const lhef::LHERunInfo* runInfo);
    virtual bool initAfterBeams() { return true; }
    virtual void beforeHadronisation(const lhef::LHEEvent* event);
    virtual void beforeHadronisationExec();

    // void setJetInput( const std::vector<fastjet::PseudoJet> input ) { fJetInput=input; return; }

    virtual int match(const lhef::LHEEvent* partonLevel, const std::vector<fastjet::PseudoJet>* jetInput) = 0;
    /*
    virtual int match(const HepMC::GenEvent *partonLevel,
                      const HepMC::GenEvent *finalState,
                      bool showeredFinalState = false) = 0;
*/
    virtual std::set<std::string> capabilities() const;

    void resetMatchingStatus() { fMatchingStatus = false; }
    bool isMatchingDone() { return fMatchingStatus; }

    virtual const std::vector<int>* getPartonList() { return nullptr; }
    virtual double getJetEtaMax() const = 0;

    /*
    const std::vector<JetPartonMatch> &getMatchSummary() const
    { return matchSummary; }
*/
    static std::unique_ptr<JetMatching> create(const edm::ParameterSet& params);

  protected:
    bool fMatchingStatus;
    /*  std::vector<JetPartonMatch> matchSummary; */
    // std::vector<fastjet::PseudoJet> fJetInput;
  };

}  // namespace gen

#endif  // GeneratorCommon_PartonShowerVeto_JetMatching_h