ParticleLevelProducer.h

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#ifndef GeneratorInterface_RivetInterface_ParticleLevelProducer_H
#define GeneratorInterface_RivetInterface_ParticleLevelProducer_H

#include "FWCore/Framework/interface/Frameworkfwd.h"
#include "FWCore/Framework/interface/one/EDProducer.h"
#include "FWCore/Framework/interface/Event.h"
#include "FWCore/Framework/interface/MakerMacros.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"

#include "DataFormats/Candidate/interface/Candidate.h"
#include "SimDataFormats/GeneratorProducts/interface/HepMCProduct.h"
#include "DataFormats/JetReco/interface/GenJetCollection.h"
#include "DataFormats/HepMCCandidate/interface/GenParticleFwd.h"

#include "Rivet/AnalysisHandler.hh"
#include "GeneratorInterface/RivetInterface/interface/RivetAnalysis.h"

class ParticleLevelProducer : public edm::one::EDProducer<edm::one::SharedResources>
{
public:
  ParticleLevelProducer(const edm::ParameterSet& pset);
  virtual ~ParticleLevelProducer() {}
  void produce(edm::Event& event, const edm::EventSetup& eventSetup) override;

private:
  void addGenJet(Rivet::Jet jet, std::unique_ptr<reco::GenJetCollection> &jets,
                 std::unique_ptr<reco::GenParticleCollection> &consts, edm::RefProd<reco::GenParticleCollection>& constsRefHandle, int &iConstituent,
                 std::unique_ptr<reco::GenParticleCollection> &tags, edm::RefProd<reco::GenParticleCollection>& tagsRefHandle, int &iTag);
  
  template<typename T> reco::Candidate::LorentzVector p4(const T& p) const
  {
    return reco::Candidate::LorentzVector(p.px(), p.py(), p.pz(), p.energy());
  }

  const edm::EDGetTokenT<edm::HepMCProduct> srcToken_;

  reco::Particle::Point genVertex_;
  
  Rivet::RivetAnalysis* rivetAnalysis_;
    Rivet::AnalysisHandler analysisHandler_;

};

#endif