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#include "EgammaAnalysis/ElectronTools/interface/SuperClusterHelper.h"
#include "Geometry/CaloTopology/interface/CaloTopology.h"
#include "FWCore/Utilities/interface/isFinite.h"
#include "RecoEgamma/EgammaTools/interface/EcalClusterLocal.h"
SuperClusterHelper::SuperClusterHelper(const reco::GsfElectron* electron,
const EcalRecHitCollection* rechits,
const CaloTopology* topo,
const CaloGeometry* geom) {
theElectron_ = electron;
rechits_ = rechits;
seedCluster_ = &(*(electron->superCluster()->seed()));
theSuperCluster_ = &(*electron->superCluster());
eSubClusters_ = 0.;
// Store subclusters
reco::CaloCluster_iterator itscl = theSuperCluster_->clustersBegin();
reco::CaloCluster_iterator itsclE = theSuperCluster_->clustersEnd();
for (; itscl < itsclE; ++itscl) {
if ((*itscl) == electron->superCluster()->seed())
continue; // skip seed cluster
theBasicClusters_.push_back(&(**itscl));
eSubClusters_ += (*itscl)->energy();
}
// sort subclusters
sort(theBasicClusters_.begin(), theBasicClusters_.end(), SuperClusterHelper::sortClusters);
// Add seed cluster at the beginning
theBasicClusters_.insert(theBasicClusters_.begin(), seedCluster_);
nBasicClusters_ = theBasicClusters_.size();
// Store ES clusters
eESClusters_ = 0.;
itscl = theSuperCluster_->preshowerClustersBegin();
itsclE = theSuperCluster_->preshowerClustersEnd();
for (; itscl < itsclE; ++itscl) {
theESClusters_.push_back(&(**itscl));
eESClusters_ += (*itscl)->energy();
}
// sort ES clusters
sort(theESClusters_.begin(), theESClusters_.end(), SuperClusterHelper::sortClusters);
nESClusters_ = theESClusters_.size();
topology_ = topo;
geometry_ = geom;
barrel_ = electron->isEB();
covComputed_ = false;
localCoordinatesComputed_ = false;
}
SuperClusterHelper::SuperClusterHelper(const pat::Electron* electron,
const EcalRecHitCollection* rechits,
const CaloTopology* topo,
const CaloGeometry* geom) {
theElectron_ = (const reco::GsfElectron*)electron;
rechits_ = rechits;
// for(unsigned ir=0; ir<rechits_->size();++ir) {
// std::cout << "RecHit " << (*rechits_)[ir].id().rawId() << " " << (*rechits_)[ir] << std::endl;
// }
// Get the embedded objects
theSuperCluster_ = &(*electron->superCluster());
seedCluster_ = &(*(electron->seed()));
const std::vector<reco::CaloCluster>& basicClusters(electron->basicClusters());
nBasicClusters_ = basicClusters.size();
eSubClusters_ = 0.;
// Store subclusters
for (unsigned ib = 0; ib < nBasicClusters_; ++ib) {
if (fabs((basicClusters[ib].energy() - seedCluster_->energy()) / seedCluster_->energy()) < 1.e-5 &&
fabs((basicClusters[ib].eta() - seedCluster_->eta()) / seedCluster_->eta()) < 1.e-5 &&
fabs((basicClusters[ib].phi() - seedCluster_->phi()) / seedCluster_->phi()) < 1.e-5)
continue; // skip seed cluster
theBasicClusters_.push_back(&basicClusters[ib]);
eSubClusters_ += basicClusters[ib].energy();
}
// sort subclusters
sort(theBasicClusters_.begin(), theBasicClusters_.end(), SuperClusterHelper::sortClusters);
// Add seed cluster at the beginning
theBasicClusters_.insert(theBasicClusters_.begin(), seedCluster_);
// Store ES clusters
const std::vector<reco::CaloCluster>& esClusters(electron->preshowerClusters());
nESClusters_ = esClusters.size();
eESClusters_ = 0.;
for (unsigned ib = 0; ib < nESClusters_; ++ib) {
theESClusters_.push_back(&esClusters[ib]);
eESClusters_ += esClusters[ib].energy();
}
// sort ES clusters
sort(theESClusters_.begin(), theESClusters_.end(), SuperClusterHelper::sortClusters);
// std::vector< std::pair<DetId, float> >::const_iterator it=seedCluster_->hitsAndFractions().begin();
// std::vector< std::pair<DetId, float> >::const_iterator itend=seedCluster_->hitsAndFractions().end();
// for( ; it!=itend ; ++it) {
// DetId id=it->first;
// std::cout << " Basic cluster " << id.rawId() << std::endl;
// }
topology_ = topo;
geometry_ = geom;
barrel_ = electron->isEB();
covComputed_ = false;
localCoordinatesComputed_ = false;
}
void SuperClusterHelper::computeLocalCovariances() {
if (!covComputed_) {
const auto& vCov_ = EcalClusterTools::localCovariances(*seedCluster_, rechits_, topology_, 4.7);
covComputed_ = true;
spp_ = 0;
if (edm::isFinite(vCov_[2]))
spp_ = sqrt(vCov_[2]);
if (theElectron_->sigmaIetaIeta() * spp_ > 0) {
sep_ = vCov_[1] / (theElectron_->sigmaIetaIeta() * spp_);
} else if (vCov_[1] > 0) {
sep_ = 1.0;
} else {
sep_ = -1.0;
}
}
}
float SuperClusterHelper::spp() {
computeLocalCovariances();
return spp_;
}
float SuperClusterHelper::sep() {
computeLocalCovariances();
return sep_;
}
void SuperClusterHelper::localCoordinates() {
if (localCoordinatesComputed_)
return;
if (barrel_) {
egammaTools::localEcalClusterCoordsEB(
*seedCluster_, *geometry_, etaCrySeed_, phiCrySeed_, ietaSeed_, iphiSeed_, thetaTilt_, phiTilt_);
} else {
egammaTools::localEcalClusterCoordsEE(
*seedCluster_, *geometry_, etaCrySeed_, phiCrySeed_, ietaSeed_, iphiSeed_, thetaTilt_, phiTilt_);
}
localCoordinatesComputed_ = true;
}
float SuperClusterHelper::subClusterEnergy(unsigned i) const {
return (nBasicClusters_ > i) ? theBasicClusters_[i]->energy() : 0.;
}
float SuperClusterHelper::subClusterEta(unsigned i) const {
return (nBasicClusters_ > i) ? theBasicClusters_[i]->eta() : 999.;
}
float SuperClusterHelper::subClusterPhi(unsigned i) const {
return (nBasicClusters_ > i) ? theBasicClusters_[i]->phi() : 999.;
}
float SuperClusterHelper::subClusterEmax(unsigned i) const {
return (nBasicClusters_ > i) ? EcalClusterTools::eMax(*theBasicClusters_[i], rechits_) : 0.;
}
float SuperClusterHelper::subClusterE3x3(unsigned i) const {
return (nBasicClusters_ > i) ? EcalClusterTools::e3x3(*theBasicClusters_[i], rechits_, topology_) : 0.;
}
float SuperClusterHelper::esClusterEnergy(unsigned i) const {
return (nESClusters_ > i) ? theESClusters_[i]->energy() : 0.;
}
float SuperClusterHelper::esClusterEta(unsigned i) const {
return (nESClusters_ > i) ? theESClusters_[i]->eta() : 999.;
}
float SuperClusterHelper::esClusterPhi(unsigned i) const {
return (nESClusters_ > i) ? theESClusters_[i]->phi() : 999.;
}
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