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File indexing completed on 2021-02-14 13:33:03

0001 #include "PhysicsTools/PatAlgos/interface/OverlapTest.h"
0002 
0003 #include <algorithm>
0004 #include "DataFormats/Math/interface/deltaR.h"
0005 #include "DataFormats/Candidate/interface/OverlapChecker.h"
0006 
0007 using namespace pat::helper;
0008 
0009 void BasicOverlapTest::readInput(const edm::Event &iEvent, const edm::EventSetup &iSetup) {
0010   iEvent.getByToken(srcToken_, candidates_);
0011   isPreselected_.resize(candidates_->size());
0012   size_t idx = 0;
0013   for (reco::CandidateView::const_iterator it = candidates_->begin(); it != candidates_->end(); ++it, ++idx) {
0014     isPreselected_[idx] = presel_(*it);
0015   }
0016   // Yes, I could use std::transform. But would people like it?
0017   // http://www.sgi.com/tech/stl/transform.html
0018 }
0019 
0020 bool BasicOverlapTest::fillOverlapsForItem(const reco::Candidate &item,
0021                                            reco::CandidatePtrVector &overlapsToFill) const {
0022   size_t idx = 0;
0023   std::vector<std::pair<float, size_t> > matches;
0024   for (reco::CandidateView::const_iterator it = candidates_->begin(); it != candidates_->end(); ++it, ++idx) {
0025     if (!isPreselected_[idx])
0026       continue;
0027     double dr = reco::deltaR(item, *it);
0028     if (dr < deltaR_) {
0029       if (checkRecoComponents_) {
0030         OverlapChecker overlaps;
0031         if (!overlaps(item, *it))
0032           continue;
0033       }
0034       if (!pairCut_(pat::DiObjectProxy(item, *it)))
0035         continue;
0036       matches.push_back(std::make_pair(dr, idx));
0037     }
0038   }
0039   // see if we matched anything
0040   if (matches.empty())
0041     return false;
0042 
0043   // sort matches
0044   std::sort(matches.begin(), matches.end());
0045   // fill ptr vector
0046   for (std::vector<std::pair<float, size_t> >::const_iterator it = matches.begin(); it != matches.end(); ++it) {
0047     overlapsToFill.push_back(candidates_->ptrAt(it->second));
0048   }
0049   return true;
0050 }
0051 
0052 bool OverlapBySuperClusterSeed::fillOverlapsForItem(const reco::Candidate &item,
0053                                                     reco::CandidatePtrVector &overlapsToFill) const {
0054   const reco::RecoCandidate *input = dynamic_cast<const reco::RecoCandidate *>(&item);
0055   if (input == nullptr)
0056     throw cms::Exception("Type Error") << "Input to OverlapBySuperClusterSeed is not a RecoCandidate. "
0057                                        << "It's a " << typeid(item).name() << "\n";
0058   reco::SuperClusterRef mySC = input->superCluster();
0059   if (mySC.isNull() || !mySC.isAvailable()) {
0060     throw cms::Exception("Bad Reference")
0061         << "Input to OverlapBySuperClusterSeed has a null or dangling superCluster reference\n";
0062   }
0063   const reco::CaloClusterPtr &mySeed = mySC->seed();
0064   if (mySeed.isNull()) {
0065     throw cms::Exception("Bad Reference")
0066         << "Input to OverlapBySuperClusterSeed has a null superCluster seed reference\n";
0067   }
0068   bool hasOverlaps = false;
0069   size_t idx = 0;
0070   //     for (edm::View<reco::RecoCandidate>::const_iterator it = others_->begin(); it != others_->end(); ++it, ++idx) {
0071   for (reco::CandidateView::const_iterator it = others_->begin(); it != others_->end(); ++it, ++idx) {
0072     const reco::RecoCandidate *other = dynamic_cast<const reco::RecoCandidate *>(&*it);
0073     reco::SuperClusterRef otherSc = other->superCluster();
0074     if (otherSc.isNull() || !otherSc.isAvailable()) {
0075       throw cms::Exception("Bad Reference")
0076           << "One item in the OverlapBySuperClusterSeed input list has a null or dangling superCluster reference\n";
0077     }
0078     if (mySeed == otherSc->seed()) {
0079       overlapsToFill.push_back(others_->ptrAt(idx));
0080       hasOverlaps = true;
0081     }
0082   }
0083   return hasOverlaps;
0084 }