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#ifndef JETSUBSTRUCTURETOOLS_H
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#define JETSUBSTRUCTURETOOLS_H
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#include "FWCore/ParameterSet/interface/ParameterSet.h"
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#include "FWCore/Framework/interface/Frameworkfwd.h"
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#include "FWCore/Framework/interface/EDAnalyzer.h"
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#include "FWCore/Framework/interface/Event.h"
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#include "VHbbAnalysis/VHbbDataFormats/interface/VHbbEventAuxInfo.h"
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#include "VHbbAnalysis/VHbbDataFormats/interface/VHbbEvent.h"
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#include <fastjet/ClusterSequence.hh>
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#include <fastjet/GhostedAreaSpec.hh>
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#include <fastjet/ClusterSequenceArea.hh>
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#include "fastjet/tools/Filter.hh"
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#include "fastjet/tools/Pruner.hh"
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#include "fastjet/tools/MassDropTagger.hh"
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#include "fastjet/GhostedAreaSpec.hh"
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#include "VHbbAnalysis/VHbbDataFormats/interface/Nsubjettiness.h"
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#include <iostream>
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class JetSubstructureTools {
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// member functions
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public:
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// constructor
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JetSubstructureTools( std::vector<float> c_px, std::vector<float> c_py, std::vector<float> c_pz, std::vector<float> c_e, std::vector<float> c_pdgId );
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~JetSubstructureTools(){}
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fastjet::PseudoJet getPrunedJet(){ return prunedJet_; }
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fastjet::PseudoJet getTrimmedJet(){ return trimmedJet_; }
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fastjet::PseudoJet getFilteredJet(){ return filteredJet_; }
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float getPrunedJetArea(){ return prunedJetArea_; }
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float getTrimmedJetArea(){ return trimmedJetArea_; }
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float getFilteredJetArea(){ return filteredJetArea_; }
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float getTau1(){ return tau1_; }
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float getTau2(){ return tau2_; }
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float getTau3(){ return tau3_; }
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float getTau4(){ return tau4_; }
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fastjet::PseudoJet getPrunedSubJet(int i){
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if (i == 0) return prunedSubJet1_;
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else if (i == 1) return prunedSubJet2_;
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else throw cms::Exception("JetSubstructureTools") << "Too many subjets..." << std::endl;
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}
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// data members
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public:
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std::vector<fastjet::PseudoJet> FJconstituents_;
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std::vector<float> c_pdgIds_;
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fastjet::PseudoJet prunedJet_;
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fastjet::PseudoJet trimmedJet_;
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fastjet::PseudoJet filteredJet_;
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float prunedJetMass_;
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float trimmedJetMass_;
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float filteredJetMass_;
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float ungroomedJetMass_;
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float prunedJetArea_;
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float trimmedJetArea_;
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float filteredJetArea_;
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float tau1_;
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float tau2_;
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float tau3_;
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float tau4_;
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float rcore01_;
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float rcore02_;
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float rcore03_;
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float rcore04_;
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float rcore05_;
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float rcore06_;
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float rcore07_;
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float rcore08_;
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float rcore09_;
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float rcore10_;
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float rcore11_;
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float rcore12_;
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fastjet::PseudoJet prunedSubJet1_;
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fastjet::PseudoJet prunedSubJet2_;
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float QJetVolatility_;
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};
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// -------------------------------------------
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// -------------------------------------------
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// -------------------------------------------
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// -------------------------------------------
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// constructor
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JetSubstructureTools::JetSubstructureTools( std::vector<float> c_px, std::vector<float> c_py, std::vector<float> c_pz, std::vector<float> c_e, std::vector<float> c_pdgId )
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{
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std::cout << "hey y'all!" << std::endl;
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// check that they are all the same size
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if ((c_px.size() == c_py.size())&&(c_py.size() == c_pz.size())&&(c_pz.size() == c_e.size())&&(c_e.size() == c_pdgId.size())){
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for (unsigned int i = 0; i < c_px.size(); i++){
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FJconstituents_.push_back( fastjet::PseudoJet( c_px[i], c_py[i], c_pz[i], c_e[i] ) );
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c_pdgIds_.push_back( c_pdgId[i] );
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}
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}
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else throw cms::Exception("JetSubstructureTools") << "Constituent size mismatch..." << std::endl;
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// -------------------------------------------
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// recluster on the fly....
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double mJetRadius = 1.2;
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fastjet::JetDefinition jetDef(fastjet::cambridge_algorithm, mJetRadius);
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int activeAreaRepeats = 1;
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double ghostArea = 0.01;
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double ghostEtaMax = 5.0;
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fastjet::GhostedAreaSpec fjActiveArea(ghostEtaMax,activeAreaRepeats,ghostArea);
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fjActiveArea.set_fj2_placement(true);
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fastjet::AreaDefinition fjAreaDefinition( fastjet::active_area_explicit_ghosts, fjActiveArea );
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fastjet::ClusterSequenceArea thisClustering(FJconstituents_, jetDef, fjAreaDefinition);
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std::vector<fastjet::PseudoJet> out_jets = sorted_by_pt(thisClustering.inclusive_jets(50.0));
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fastjet::ClusterSequence thisClustering_basic(FJconstituents_, jetDef);
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std::vector<fastjet::PseudoJet> out_jets_basic = sorted_by_pt(thisClustering_basic.inclusive_jets(50.0));
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// -------------------------------------------
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// define groomers
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fastjet::Filter trimmer( fastjet::Filter(fastjet::JetDefinition(fastjet::kt_algorithm, 0.2), fastjet::SelectorPtFractionMin(0.03)));
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fastjet::Filter filter( fastjet::Filter(fastjet::JetDefinition(fastjet::cambridge_algorithm, 0.3), fastjet::SelectorNHardest(3)));
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fastjet::Pruner pruner(fastjet::cambridge_algorithm, 0.1, 0.5);
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std::vector<fastjet::Transformer const *> transformers;
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transformers.push_back(&trimmer);
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transformers.push_back(&filter);
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transformers.push_back(&pruner);
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// define n-subjettiness
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float mNsubjettinessKappa = 1.;
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NsubParameters paraNsub = NsubParameters(mNsubjettinessKappa, mJetRadius);
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Nsubjettiness routine(nsub_kt_axes, paraNsub);
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ungroomedJetMass_ = out_jets.at(0).m();
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// -------------------------------------------
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// compute pruning, trimming, filtering -------------
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int transctr = 0;
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for ( std::vector<fastjet::Transformer const *>::const_iterator
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itransf = transformers.begin(), itransfEnd = transformers.end();
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itransf != itransfEnd; ++itransf ) {
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fastjet::PseudoJet transformedJet = out_jets.at(0);
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transformedJet = (**itransf)(transformedJet);
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if (transctr == 0){ // trimmed
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trimmedJet_ = transformedJet;
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trimmedJetMass_ = transformedJet.m();
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trimmedJetArea_ = transformedJet.area();
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}
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else if (transctr == 1){ // filtered
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filteredJet_ = transformedJet;
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filteredJetMass_ = transformedJet.m();
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filteredJetArea_ = transformedJet.area();
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}
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else if (transctr == 2){ // pruned
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prunedJet_ = transformedJet;
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prunedJetMass_ = transformedJet.m();
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prunedJetArea_ = transformedJet.area();
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//decompose into requested number of subjets:
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if (transformedJet.constituents().size() > 1){
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int nsubjetstokeep = 2;
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std::vector<fastjet::PseudoJet> prunedSubjets = transformedJet.associated_cluster_sequence()->exclusive_subjets(transformedJet,nsubjetstokeep);
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prunedSubJet1_ = prunedSubjets.at(0);
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prunedSubJet2_ = prunedSubjets.at(1);
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}
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}
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else{ std::cout << "error in number of transformers" << std::endl;}
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transctr++;
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}
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// -------------------------------------------
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// compute n-subjettiness -------------
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tau1_ = routine.getTau(1, out_jets.at(0).constituents());
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tau2_ = routine.getTau(2, out_jets.at(0).constituents());
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tau3_ = routine.getTau(3, out_jets.at(0).constituents());
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tau4_ = routine.getTau(4, out_jets.at(0).constituents());
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}
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// -------------------------------------------
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// -------------------------------------------
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// -------------------------------------------
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// -------------------------------------------
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#endif
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