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File indexing completed on 2021-02-14 14:30:40

0001 // -*- C++ -*-
0002 //
0003 // Package:    SimTracker/TrackAssociatorProducers
0004 // Class:      QuickTrackAssociatorByHitsProducer
0005 //
0006 /**\class QuickTrackAssociatorByHitsProducer QuickTrackAssociatorByHitsProducer.cc SimTracker/TrackAssociatorProducers/plugins/QuickTrackAssociatorByHitsProducer.cc
0007 
0008  Description: [one line class summary]
0009 
0010  Implementation:
0011      [Notes on implementation]
0012 */
0013 //
0014 // Original Author:  Christopher Jones
0015 //         Created:  Mon, 05 Jan 2015 16:33:55 GMT
0016 //
0017 //
0018 
0019 // system include files
0020 #include <memory>
0021 
0022 // user include files
0023 #include "FWCore/Framework/interface/Frameworkfwd.h"
0024 #include "FWCore/Framework/interface/global/EDProducer.h"
0025 
0026 #include "FWCore/Framework/interface/Event.h"
0027 #include "FWCore/Framework/interface/MakerMacros.h"
0028 
0029 #include "FWCore/ParameterSet/interface/ParameterSet.h"
0030 #include "FWCore/Utilities/interface/EDGetToken.h"
0031 
0032 #include "SimDataFormats/Associations/interface/TrackToTrackingParticleAssociator.h"
0033 #include "QuickTrackAssociatorByHitsImpl.h"
0034 #include "SimTracker/TrackerHitAssociation/interface/TrackerHitAssociator.h"
0035 
0036 //
0037 // class declaration
0038 //
0039 namespace {}
0040 
0041 class QuickTrackAssociatorByHitsProducer : public edm::global::EDProducer<> {
0042 public:
0043   explicit QuickTrackAssociatorByHitsProducer(const edm::ParameterSet&);
0044   ~QuickTrackAssociatorByHitsProducer() override;
0045 
0046   static void fillDescriptions(edm::ConfigurationDescriptions& descriptions);
0047 
0048 private:
0049   void beginJob() override;
0050   void produce(edm::StreamID, edm::Event&, const edm::EventSetup&) const override;
0051   void endJob() override;
0052   edm::ParameterSet makeHitAssociatorParameters(const edm::ParameterSet&);
0053 
0054   // ----------member data ---------------------------
0055   TrackerHitAssociator::Config trackerHitAssociatorConfig_;
0056   edm::EDGetTokenT<ClusterTPAssociation> cluster2TPToken_;
0057   double qualitySimToReco_;
0058   double puritySimToReco_;
0059   double pixelHitWeight_;
0060   double cutRecoToSim_;
0061   QuickTrackAssociatorByHitsImpl::SimToRecoDenomType simToRecoDenominator_;
0062   bool threeHitTracksAreSpecial_;
0063   bool useClusterTPAssociation_;
0064   bool absoluteNumberOfHits_;
0065 };
0066 
0067 //
0068 // constants, enums and typedefs
0069 //
0070 
0071 //
0072 // static data member definitions
0073 //
0074 
0075 //
0076 // constructors and destructor
0077 //
0078 QuickTrackAssociatorByHitsProducer::QuickTrackAssociatorByHitsProducer(const edm::ParameterSet& iConfig)
0079     : qualitySimToReco_(iConfig.getParameter<double>("Quality_SimToReco")),
0080       puritySimToReco_(iConfig.getParameter<double>("Purity_SimToReco")),
0081       pixelHitWeight_(iConfig.getParameter<double>("PixelHitWeight")),
0082       cutRecoToSim_(iConfig.getParameter<double>("Cut_RecoToSim")),
0083       threeHitTracksAreSpecial_(iConfig.getParameter<bool>("ThreeHitTracksAreSpecial")),
0084       useClusterTPAssociation_(iConfig.getParameter<bool>("useClusterTPAssociation")),
0085       absoluteNumberOfHits_(iConfig.getParameter<bool>("AbsoluteNumberOfHits")) {
0086   //
0087   // Check whether the denominator when working out the percentage of shared hits should
0088   // be the number of simulated hits or the number of reconstructed hits.
0089   //
0090   std::string denominatorString = iConfig.getParameter<std::string>("SimToRecoDenominator");
0091   if (denominatorString == "sim")
0092     simToRecoDenominator_ = QuickTrackAssociatorByHitsImpl::denomsim;
0093   else if (denominatorString == "reco")
0094     simToRecoDenominator_ = QuickTrackAssociatorByHitsImpl::denomreco;
0095   else
0096     throw cms::Exception("QuickTrackAssociatorByHitsImpl") << "SimToRecoDenominator not specified as sim or reco";
0097 
0098   //
0099   // Do some checks on whether UseGrouped or UseSplitting have been set. They're not used
0100   // unlike the standard TrackAssociatorByHits so show a warning.
0101   //
0102   bool useGrouped, useSplitting;
0103   if (iConfig.exists("UseGrouped"))
0104     useGrouped = iConfig.getParameter<bool>("UseGrouped");
0105   else
0106     useGrouped = true;
0107 
0108   if (iConfig.exists("UseSplitting"))
0109     useSplitting = iConfig.getParameter<bool>("UseSplitting");
0110   else
0111     useSplitting = true;
0112 
0113   // This associator works as though both UseGrouped and UseSplitting were set to true, so show a
0114   // warning if this isn't the case.
0115   if (!(useGrouped && useSplitting)) {
0116     LogDebug("QuickTrackAssociatorByHitsImpl")
0117         << "UseGrouped and/or UseSplitting has been set to false, but this associator ignores that setting.";
0118   }
0119 
0120   //register your products
0121   produces<reco::TrackToTrackingParticleAssociator>();
0122 
0123   if (useClusterTPAssociation_) {
0124     cluster2TPToken_ = consumes<ClusterTPAssociation>(iConfig.getParameter<edm::InputTag>("cluster2TPSrc"));
0125   } else {
0126     trackerHitAssociatorConfig_ =
0127         TrackerHitAssociator::Config(makeHitAssociatorParameters(iConfig), consumesCollector());
0128   }
0129 }
0130 
0131 QuickTrackAssociatorByHitsProducer::~QuickTrackAssociatorByHitsProducer() {
0132   // do anything here that needs to be done at desctruction time
0133   // (e.g. close files, deallocate resources etc.)
0134 }
0135 
0136 //
0137 // member functions
0138 //
0139 
0140 // Set up the parameter set for the hit associator
0141 edm::ParameterSet QuickTrackAssociatorByHitsProducer::makeHitAssociatorParameters(const edm::ParameterSet& iConfig) {
0142   edm::ParameterSet hitAssociatorParameters;
0143   hitAssociatorParameters.addParameter<bool>("associatePixel", iConfig.getParameter<bool>("associatePixel"));
0144   hitAssociatorParameters.addParameter<bool>("associateStrip", iConfig.getParameter<bool>("associateStrip"));
0145   // This is the important one, it stops the hit associator searching through the list of sim hits.
0146   // I only want to use the hit associator methods that work on the hit IDs (i.e. the uint32_t trackId
0147   // and the EncodedEventId eventId) so I'm not interested in matching that to the PSimHit objects.
0148   hitAssociatorParameters.addParameter<bool>("associateRecoTracks", true);
0149   // add these new ones to allow redirection of inputs:
0150   hitAssociatorParameters.addParameter<edm::InputTag>("pixelSimLinkSrc",
0151                                                       iConfig.getParameter<edm::InputTag>("pixelSimLinkSrc"));
0152   hitAssociatorParameters.addParameter<edm::InputTag>("stripSimLinkSrc",
0153                                                       iConfig.getParameter<edm::InputTag>("stripSimLinkSrc"));
0154 
0155   return hitAssociatorParameters;
0156 }
0157 
0158 // ------------ method called to produce the data  ------------
0159 void QuickTrackAssociatorByHitsProducer::produce(edm::StreamID,
0160                                                  edm::Event& iEvent,
0161                                                  const edm::EventSetup& iSetup) const {
0162   using namespace edm;
0163 
0164   const ClusterTPAssociation* clusterAssoc = nullptr;
0165   std::unique_ptr<TrackerHitAssociator> trackAssoc;
0166   if (useClusterTPAssociation_) {
0167     edm::Handle<ClusterTPAssociation> clusterAssocHandle;
0168     iEvent.getByToken(cluster2TPToken_, clusterAssocHandle);
0169     clusterAssoc = clusterAssocHandle.product();
0170   } else {
0171     // If control got this far then either useClusterTPAssociation_ was false or getting the cluster
0172     // to TrackingParticle association from the event failed. Either way I need to create a hit associator.
0173     trackAssoc = std::make_unique<TrackerHitAssociator>(iEvent, trackerHitAssociatorConfig_);
0174   }
0175 
0176   auto impl = std::make_unique<QuickTrackAssociatorByHitsImpl>(iEvent.productGetter(),
0177                                                                std::move(trackAssoc),
0178                                                                clusterAssoc,
0179                                                                absoluteNumberOfHits_,
0180                                                                qualitySimToReco_,
0181                                                                puritySimToReco_,
0182                                                                pixelHitWeight_,
0183                                                                cutRecoToSim_,
0184                                                                threeHitTracksAreSpecial_,
0185                                                                simToRecoDenominator_);
0186 
0187   auto toPut = std::make_unique<reco::TrackToTrackingParticleAssociator>(std::move(impl));
0188   iEvent.put(std::move(toPut));
0189 }
0190 
0191 // ------------ method called once each job just before starting event loop  ------------
0192 void QuickTrackAssociatorByHitsProducer::beginJob() {}
0193 
0194 // ------------ method called once each job just after ending the event loop  ------------
0195 void QuickTrackAssociatorByHitsProducer::endJob() {}
0196 
0197 // ------------ method fills 'descriptions' with the allowed parameters for the module  ------------
0198 void QuickTrackAssociatorByHitsProducer::fillDescriptions(edm::ConfigurationDescriptions& descriptions) {
0199   //The following says we do not know what parameters are allowed so do no validation
0200   // Please change this to state exactly what you do use, even if it is no parameters
0201   edm::ParameterSetDescription desc;
0202   desc.setUnknown();
0203   descriptions.addDefault(desc);
0204 }
0205 
0206 //define this as a plug-in
0207 DEFINE_FWK_MODULE(QuickTrackAssociatorByHitsProducer);