HLTRechitInRegionsProducer.cc

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// C/C++ headers
#include <vector>

// Framework
#include "DataFormats/Common/interface/Handle.h"
#include "FWCore/MessageLogger/interface/MessageLogger.h"
#include "FWCore/Framework/interface/ESHandle.h"
#include "CommonTools/Utils/interface/StringToEnumValue.h"
#include "FWCore/ParameterSet/interface/ConfigurationDescriptions.h"
#include "FWCore/ParameterSet/interface/ParameterSetDescription.h"
#include "HLTrigger/HLTcore/interface/defaultModuleLabel.h"

// Reconstruction Classes
#include "DataFormats/EcalRecHit/interface/EcalUncalibratedRecHit.h"
#include "DataFormats/EcalRecHit/interface/EcalRecHit.h"
#include "DataFormats/EcalRecHit/interface/EcalRecHitCollections.h"
#include "DataFormats/EcalDetId/interface/EBDetId.h"
#include "CondFormats/DataRecord/interface/EcalChannelStatusRcd.h"
#include "CondFormats/EcalObjects/interface/EcalChannelStatus.h"
#include "RecoLocalCalo/EcalRecAlgos/interface/EcalSeverityLevelAlgo.h"
#include "RecoLocalCalo/EcalRecAlgos/interface/EcalSeverityLevelAlgoRcd.h"

// Geometry
#include "Geometry/Records/interface/CaloGeometryRecord.h"
#include "Geometry/CaloGeometry/interface/CaloSubdetectorGeometry.h"
#include "Geometry/CaloGeometry/interface/CaloCellGeometry.h"
#include "Geometry/CaloGeometry/interface/CaloGeometry.h"
#include "Geometry/CaloTopology/interface/EcalBarrelTopology.h"
#include "Geometry/CaloTopology/interface/EcalEndcapTopology.h"
#include "Geometry/CaloTopology/interface/EcalPreshowerTopology.h"

// Level 1 Trigger
#include "DataFormats/L1Trigger/interface/L1EmParticle.h"
#include "DataFormats/L1Trigger/interface/L1EmParticleFwd.h"
#include "CondFormats/L1TObjects/interface/L1CaloGeometry.h"
#include "CondFormats/DataRecord/interface/L1CaloGeometryRecord.h"

// EgammaCoreTools
#include "RecoEcal/EgammaCoreTools/interface/EcalEtaPhiRegion.h"

// Class header file
#include "RecoEgamma/EgammaHLTProducers/interface/HLTRechitInRegionsProducer.h"

template<typename T1>
HLTRechitInRegionsProducer<T1>::HLTRechitInRegionsProducer(const edm::ParameterSet& ps):
  useUncalib_      (ps.getParameter<bool>("useUncalib")),
  doIsolated_      (ps.getParameter<bool>("doIsolated")),
  l1TokenIsolated_ (doIsolated_ ? consumes<T1Collection>(ps.getParameter<edm::InputTag>("l1TagIsolated")) : edm::EDGetTokenT<T1Collection>()),
  l1TokenNonIsolated_(consumes<T1Collection>(ps.getParameter<edm::InputTag>("l1TagNonIsolated"))),
  l1LowerThr_      (ps.getParameter<double> ("l1LowerThr")),
  l1UpperThr_      (ps.getParameter<double> ("l1UpperThr")),
  l1LowerThrIgnoreIsolation_(ps.getParameter<double> ("l1LowerThrIgnoreIsolation")),
  regionEtaMargin_(ps.getParameter<double>("regionEtaMargin")),
  regionPhiMargin_(ps.getParameter<double>("regionPhiMargin")),
  hitLabels       (ps.getParameter<std::vector<edm::InputTag>>("ecalhitLabels")),
  productLabels(ps.getParameter<std::vector<std::string>>("productLabels")) {

  if (useUncalib_) {
    for (unsigned int i=0; i<hitLabels.size(); i++) { 
      uncalibHitTokens.push_back(consumes<EcalUncalibratedRecHitCollection>(hitLabels[i]));
      produces<EcalUncalibratedRecHitCollection>(productLabels[i]);
    }
  } else {
    for (unsigned int i=0; i<hitLabels.size(); i++) { 
      hitTokens.push_back(consumes<EcalRecHitCollection>(hitLabels[i]));
      produces<EcalRecHitCollection> (productLabels[i]);
    }
  }
}

template<typename T1>
HLTRechitInRegionsProducer<T1>::~HLTRechitInRegionsProducer()
{}

template<typename T1>
void HLTRechitInRegionsProducer<T1>::fillDescriptions(edm::ConfigurationDescriptions& descriptions) {
  edm::ParameterSetDescription desc;
  std::vector<std::string> productTags;
  productTags.push_back("EcalRegionalRecHitsEB");
  productTags.push_back("EcalRegionalRecHitsEE");
  desc.add<std::vector<std::string>>("productLabels", productTags);
  std::vector<edm::InputTag> inputTags;
  inputTags.push_back(edm::InputTag("hltEcalRegionalEgammaRecHit:EcalRecHitsEB"));
  inputTags.push_back(edm::InputTag("hltEcalRegionalEgammaRecHit:EcalRecHitsEE"));
  inputTags.push_back(edm::InputTag("hltESRegionalEgammaRecHit:EcalRecHitsES"));
  desc.add<std::vector<edm::InputTag>>("ecalhitLabels", inputTags);
  desc.add<edm::InputTag>("l1TagIsolated", edm::InputTag("l1extraParticles","Isolated"));
  desc.add<edm::InputTag>("l1TagNonIsolated", edm::InputTag("l1extraParticles","NonIsolated"));
  desc.add<bool>("useUncalib", true);
  desc.add<bool>("doIsolated", true);
  desc.add<double>("l1LowerThr", 5.0);
  desc.add<double>("l1UpperThr", 999.);
  desc.add<double>("l1LowerThrIgnoreIsolation", 0.0);
  desc.add<double>("regionEtaMargin", 0.14);
  desc.add<double>("regionPhiMargin", 0.4);
  descriptions.add(defaultModuleLabel<HLTRechitInRegionsProducer<T1>>(), desc); 
}

template<typename T1>
void HLTRechitInRegionsProducer<T1>::produce(edm::Event& evt, const edm::EventSetup& es) {

  // get the collection geometry:
  edm::ESHandle<CaloGeometry> geoHandle;
  es.get<CaloGeometryRecord>().get(geoHandle);
  const CaloGeometry& geometry = *geoHandle;
  const CaloSubdetectorGeometry *geometry_p;
  std::unique_ptr<const CaloSubdetectorTopology> topology;
    
  //Get the L1 EM Particle Collection
  edm::Handle< T1Collection > emIsolColl ;
  if(doIsolated_) {
    evt.getByToken(l1TokenIsolated_, emIsolColl);
  }

  //Get the L1 EM Particle Collection
  edm::Handle< T1Collection > emNonIsolColl ;
  evt.getByToken(l1TokenNonIsolated_, emNonIsolColl);
  
  // Get the CaloGeometry
  edm::ESHandle<L1CaloGeometry> l1CaloGeom ;
  es.get<L1CaloGeometryRecord>().get(l1CaloGeom) ;

  std::vector<EcalEtaPhiRegion> regions;
  if(doIsolated_) getEtaPhiRegions(&regions, *emIsolColl, *l1CaloGeom, true);
  
  if(!doIsolated_ or (l1LowerThrIgnoreIsolation_ < 64)) getEtaPhiRegions(&regions, *emNonIsolColl, *l1CaloGeom, false);


  if (useUncalib_) {

    edm::Handle<EcalUncalibratedRecHitCollection> urhcH[3];
    for (unsigned int i=0; i<hitLabels.size(); i++) {
      auto uhits = std::make_unique<EcalUncalibratedRecHitCollection>();
      
      evt.getByToken(uncalibHitTokens[i], urhcH[i]);  
      if (!(urhcH[i].isValid())) {
    edm::LogError("ProductNotFound")<< "could not get a handle on the EcalRecHitCollection! (" << hitLabels[i].encode() << ")" << std::endl;
    return;
      }
      const EcalUncalibratedRecHitCollection* uncalibRecHits = urhcH[i].product();
      
      if (!uncalibRecHits->empty()) {
    if ((*uncalibRecHits)[0].id().subdetId() == EcalBarrel) {
      geometry_p = geometry.getSubdetectorGeometry(DetId::Ecal, EcalBarrel);
      topology = std::make_unique<EcalBarrelTopology>(geoHandle);
    } else if ((*uncalibRecHits)[0].id().subdetId() == EcalEndcap) {
      geometry_p = geometry.getSubdetectorGeometry(DetId::Ecal, EcalEndcap);
      topology = std::make_unique<EcalEndcapTopology>(geoHandle);
    } else if ((*uncalibRecHits)[0].id().subdetId() == EcalPreshower) {
      geometry_p = geometry.getSubdetectorGeometry(DetId::Ecal, EcalPreshower);
      topology = std::make_unique<EcalPreshowerTopology>(geoHandle);
    } else throw(std::runtime_error("\n\nProducer encountered invalied ecalhitcollection type.\n\n"));
    
    if(!regions.empty()) {
      EcalUncalibratedRecHitCollection::const_iterator it;
      
      for (it = uncalibRecHits->begin(); it != uncalibRecHits->end(); it++){
        const CaloCellGeometry & this_cell = *(*geometry_p).getGeometry(it->id());
        
        std::vector<EcalEtaPhiRegion>::const_iterator region;
        for (region=regions.begin(); region!=regions.end(); region++) {
          if (region->inRegion(this_cell.etaPos(),this_cell.phiPos())) {
        uhits->push_back(*it);
        break;
          }
        }
      }
    }
      }
      evt.put(std::move(uhits), productLabels[i]);

    }

  } else {

    edm::Handle<EcalRecHitCollection> rhcH[3];
    for (unsigned int i=0; i<hitLabels.size(); i++) {
      auto hits = std::make_unique<EcalRecHitCollection>();
    
      evt.getByToken(hitTokens[i], rhcH[i]);  
      if (!(rhcH[i].isValid())) {
    edm::LogError("ProductNotFound")<< "could not get a handle on the EcalRecHitCollection! (" << hitLabels[i].encode() << ")" << std::endl;
    return;
      }
      const EcalRecHitCollection* recHits = rhcH[i].product();
      
      if (!recHits->empty()) {
    if ((*recHits)[0].id().subdetId() == EcalBarrel) {
      geometry_p = geometry.getSubdetectorGeometry(DetId::Ecal, EcalBarrel);
      topology = std::make_unique<EcalBarrelTopology>(geoHandle);
    } else if ((*recHits)[0].id().subdetId() == EcalEndcap) {
      geometry_p = geometry.getSubdetectorGeometry(DetId::Ecal, EcalEndcap);
      topology = std::make_unique<EcalEndcapTopology>(geoHandle);
    } else if ((*recHits)[0].id().subdetId() == EcalPreshower) {
      geometry_p = geometry.getSubdetectorGeometry(DetId::Ecal, EcalPreshower);
      topology = std::make_unique<EcalPreshowerTopology>(geoHandle);
    } else throw(std::runtime_error("\n\nProducer encountered invalied ecalhitcollection type.\n\n"));
    
    if(!regions.empty()) {
      EcalRecHitCollection::const_iterator it;  
      for (it = recHits->begin(); it != recHits->end(); it++){
        const CaloCellGeometry & this_cell = *(*geometry_p).getGeometry(it->id());
        
        std::vector<EcalEtaPhiRegion>::const_iterator region;
        for (region=regions.begin(); region!=regions.end(); region++) {
              if (region->inRegion(this_cell.etaPos(),this_cell.phiPos())) {
        hits->push_back(*it);
        break;
          }
        }
      }
    }
      }
      evt.put(std::move(hits), productLabels[i]);

    }
  }
}

template<>
void HLTRechitInRegionsProducer<l1extra::L1EmParticle>::getEtaPhiRegions(std::vector<EcalEtaPhiRegion> * theRegions, T1Collection theCandidateCollection, const L1CaloGeometry& l1CaloGeom, bool isolatedCase){
    for (unsigned int candItr = 0 ; candItr < theCandidateCollection.size(); candItr++){
        l1extra::L1EmParticle emItr = theCandidateCollection.at(candItr);
        
        if (!isolatedCase){
            if(doIsolated_ and (emItr.et() < l1LowerThrIgnoreIsolation_)) continue;
        }
    
        if ((emItr.et() > l1LowerThr_) and (emItr.et() < l1UpperThr_)) {
            
            // Access the GCT hardware object corresponding to the L1Extra EM object.
            int etaIndex = emItr.gctEmCand()->etaIndex();
            int phiIndex = emItr.gctEmCand()->phiIndex();
            
            // Use the L1CaloGeometry to find the eta, phi bin boundaries.
            double etaLow  = l1CaloGeom.etaBinLowEdge(etaIndex);
            double etaHigh = l1CaloGeom.etaBinHighEdge(etaIndex);
            double phiLow  = l1CaloGeom.emJetPhiBinLowEdge( phiIndex ) ;
            double phiHigh = l1CaloGeom.emJetPhiBinHighEdge( phiIndex ) ;
            
            etaLow -= regionEtaMargin_;
            etaHigh += regionEtaMargin_;
            phiLow -= regionPhiMargin_;
            phiHigh += regionPhiMargin_;
            
            
            
            theRegions->push_back(EcalEtaPhiRegion(etaLow,etaHigh,phiLow,phiHigh));
        }
    }
}

template<typename T1>
void HLTRechitInRegionsProducer<T1>::getEtaPhiRegions(std::vector<EcalEtaPhiRegion> * theRegions, T1Collection theCandidateCollection, const L1CaloGeometry& l1CaloGeom, bool isolatedCase){
    for (unsigned int candItr = 0 ; candItr < theCandidateCollection.size(); candItr++){
        T1 emItr = theCandidateCollection.at(candItr);
        if ((emItr.et() > l1LowerThr_) and (emItr.et() < l1UpperThr_)) {
            
            double etaLow = emItr.eta() - regionEtaMargin_;
            double etaHigh = emItr.eta() + regionEtaMargin_;
            double phiLow = emItr.phi() - regionPhiMargin_;
            double phiHigh = emItr.phi() + regionPhiMargin_;
            
            theRegions->push_back(EcalEtaPhiRegion(etaLow,etaHigh,phiLow,phiHigh));
        }
    }
}

typedef HLTRechitInRegionsProducer<l1extra::L1EmParticle> EgammaHLTRechitInRegionsProducer;
DEFINE_FWK_MODULE(EgammaHLTRechitInRegionsProducer);

typedef HLTRechitInRegionsProducer<reco::RecoChargedCandidate> MuonHLTRechitInRegionsProducer;
DEFINE_FWK_MODULE(MuonHLTRechitInRegionsProducer);