TrackFromSeedProducer Class Reference

#include <FastSimulation/TrackFromSeedProducer/plugins/TrackFromSeedProducer.cc>

Inheritance diagram for TrackFromSeedProducer:

Public Member Functions
	TrackFromSeedProducer (const edm::ParameterSet &)
	~TrackFromSeedProducer ()
Public Member Functions inherited from edm::global::EDProducer<>
	EDProducer ()=default
Public Member Functions inherited from edm::global::EDProducerBase
	EDProducerBase ()
ModuleDescription const &	moduleDescription () const
virtual	~EDProducerBase ()
Public Member Functions inherited from edm::ProducerBase
void	callWhenNewProductsRegistered (std::function< void(BranchDescription const &)> const &func)
std::vector< edm::ProductResolverIndex > const &	indiciesForPutProducts (BranchType iBranchType) const
	ProducerBase ()
void	registerProducts (ProducerBase *, ProductRegistry *, ModuleDescription const &)
std::function< void(BranchDescription const &)>	registrationCallback () const
	used by the fwk to register list of products More...
void	resolvePutIndicies (BranchType iBranchType, std::unordered_multimap< std::string, edm::ProductResolverIndex > const &iIndicies, std::string const &moduleLabel)
virtual	~ProducerBase () noexcept(false)
Public Member Functions inherited from edm::EDConsumerBase
std::vector< ConsumesInfo >	consumesInfo () const
	EDConsumerBase ()
	EDConsumerBase (EDConsumerBase const &)=delete
	EDConsumerBase (EDConsumerBase &&)=default
ProductResolverIndexAndSkipBit	indexFrom (EDGetToken, BranchType, TypeID const &) const
void	itemsMayGet (BranchType, std::vector< ProductResolverIndexAndSkipBit > &) const
void	itemsToGet (BranchType, std::vector< ProductResolverIndexAndSkipBit > &) const
std::vector< ProductResolverIndexAndSkipBit > const &	itemsToGetFromEvent () const
void	labelsForToken (EDGetToken iToken, Labels &oLabels) const
void	modulesWhoseProductsAreConsumed (std::vector< ModuleDescription const * > &modules, ProductRegistry const &preg, std::map< std::string, ModuleDescription const * > const &labelsToDesc, std::string const &processName) const
EDConsumerBase const &	operator= (EDConsumerBase const &)=delete
EDConsumerBase &	operator= (EDConsumerBase &&)=default
bool	registeredToConsume (ProductResolverIndex, bool, BranchType) const
bool	registeredToConsumeMany (TypeID const &, BranchType) const
void	updateLookup (BranchType iBranchType, ProductResolverIndexHelper const &, bool iPrefetchMayGet)
virtual	~EDConsumerBase () noexcept(false)

Static Public Member Functions
static void	fillDescriptions (edm::ConfigurationDescriptions &descriptions)
Static Public Member Functions inherited from edm::global::EDProducerBase
static const std::string &	baseType ()
static void	fillDescriptions (ConfigurationDescriptions &descriptions)
static void	prevalidate (ConfigurationDescriptions &descriptions)

Private Member Functions
virtual void	produce (edm::StreamID, edm::Event &, const edm::EventSetup &) const override

Private Attributes
edm::EDGetTokenT< reco::BeamSpot >	beamSpotToken
edm::EDGetTokenT< edm::View< TrajectorySeed > >	seedsToken
std::string	tTRHBuilderName

Additional Inherited Members
Public Types inherited from edm::global::EDProducerBase
typedef EDProducerBase	ModuleType
Public Types inherited from edm::ProducerBase
typedef ProductRegistryHelper::TypeLabelList	TypeLabelList
Public Types inherited from edm::EDConsumerBase
typedef ProductLabels	Labels
Protected Member Functions inherited from edm::EDConsumerBase
template<typename ProductType , BranchType B = InEvent>
EDGetTokenT< ProductType >	consumes (edm::InputTag const &tag)
EDGetToken	consumes (const TypeToGet &id, edm::InputTag const &tag)
template<BranchType B>
EDGetToken	consumes (TypeToGet const &id, edm::InputTag const &tag)
ConsumesCollector	consumesCollector ()
	Use a ConsumesCollector to gather consumes information from helper functions. More...
template<typename ProductType , BranchType B = InEvent>
void	consumesMany ()
void	consumesMany (const TypeToGet &id)
template<BranchType B>
void	consumesMany (const TypeToGet &id)
template<typename ProductType , BranchType B = InEvent>
EDGetTokenT< ProductType >	mayConsume (edm::InputTag const &tag)
EDGetToken	mayConsume (const TypeToGet &id, edm::InputTag const &tag)
template<BranchType B>
EDGetToken	mayConsume (const TypeToGet &id, edm::InputTag const &tag)

Detailed Description

Description: [one line class summary]

Implementation: [Notes on implementation]

Definition at line 49 of file TrackFromSeedProducer.cc.

Constructor & Destructor Documentation

TrackFromSeedProducer::TrackFromSeedProducer ( const edm::ParameterSet &  iConfig )

explicit

Definition at line 77 of file TrackFromSeedProducer.cc.

References AlignmentProducer_cff::beamSpotTag, beamSpotToken, edm::ParameterSet::getParameter(), gedGsfElectrons_cfi::seedsTag, seedsToken, AlCaHLTBitMon_QueryRunRegistry::string, and tTRHBuilderName.

{
  //register your products
  produces<reco::TrackCollection>();
  produces<TrackingRecHitCollection>();
  produces<reco::TrackExtraCollection>();

  // read parametes
  edm::InputTag seedsTag(iConfig.getParameter<edm::InputTag>("src"));
  edm::InputTag beamSpotTag(iConfig.getParameter<edm::InputTag>("beamSpot"));
  tTRHBuilderName = iConfig.getParameter<std::string>("TTRHBuilder");
  
  //consumes
  seedsToken = consumes<edm::View<TrajectorySeed> >(seedsTag);
  beamSpotToken = consumes<reco::BeamSpot>(beamSpotTag);
}

TrackFromSeedProducer::~TrackFromSeedProducer

(

)

Definition at line 95 of file TrackFromSeedProducer.cc.

{}

Member Function Documentation

void TrackFromSeedProducer::fillDescriptions ( edm::ConfigurationDescriptions &  descriptions )

static

Definition at line 188 of file TrackFromSeedProducer.cc.

References edm::ConfigurationDescriptions::addDefault(), DEFINE_FWK_MODULE, and edm::ParameterSetDescription::setUnknown().

                                                                                  {
  //The following says we do not know what parameters are allowed so do no validation
  // Please change this to state exactly what you do use, even if it is no parameters
  edm::ParameterSetDescription desc;
  desc.setUnknown();
  descriptions.addDefault(desc);
}

void TrackFromSeedProducer::produce ( edm::StreamID  , edm::Event &  iEvent, const edm::EventSetup &  iSetup  ) const

overrideprivatevirtual

Definition at line 99 of file TrackFromSeedProducer.cc.

References ecalDrivenElectronSeedsParameters_cff::beamSpot, beamSpotToken, TransientTrackingRecHitBuilder::build(), TrajectoryStateOnSurface::charge(), TrajectoryStateOnSurface::freeState(), PerigeeConversions::ftsToPerigeeError(), edm::EventSetup::get(), edm::Event::getByToken(), edm::Event::getRefBeforePut(), eostools::move(), edm::ESHandle< T >::product(), edm::Event::put(), TrackInfoProducer_cfi::rechits, SurveyInfoScenario_cff::seed, seedsToken, l1t::tracks, trajectoryStateTransform::transientState(), and tTRHBuilderName.

{
   using namespace edm;
   using namespace reco;
   using namespace std;
   
   // output collection
   unique_ptr<TrackCollection> tracks(new TrackCollection);
   unique_ptr<TrackingRecHitCollection> rechits(new TrackingRecHitCollection);
   unique_ptr<TrackExtraCollection> trackextras(new TrackExtraCollection);
   
   // product references 
   TrackExtraRefProd ref_trackextras = iEvent.getRefBeforePut<TrackExtraCollection>();
   TrackingRecHitRefProd ref_rechits = iEvent.getRefBeforePut<TrackingRecHitCollection>();

   // input collection
   Handle<edm::View<TrajectorySeed> > hseeds;
   iEvent.getByToken(seedsToken,hseeds);
   const auto& seeds = *hseeds;

   // beam spot
   edm::Handle<reco::BeamSpot> beamSpot;
   iEvent.getByToken(beamSpotToken,beamSpot);

   // some objects to build to tracks
   TSCBLBuilderNoMaterial tscblBuilder;

   edm::ESHandle<TransientTrackingRecHitBuilder> tTRHBuilder;
   iSetup.get<TransientRecHitRecord>().get(tTRHBuilderName,tTRHBuilder);

   edm::ESHandle<MagneticField> theMF;
   iSetup.get<IdealMagneticFieldRecord>().get(theMF);

   edm::ESHandle<TrackerTopology> httopo;
   iSetup.get<TrackerTopologyRcd>().get(httopo);
   const TrackerTopology& ttopo = *httopo;

   // create tracks from seeds
   int nfailed  = 0;
   for(size_t iSeed=0; iSeed < seeds.size(); ++iSeed) {
     auto const& seed = seeds[iSeed];
     // try to create a track
     TransientTrackingRecHit::RecHitPointer lastRecHit = tTRHBuilder->build(&*(seed.recHits().second-1));
     TrajectoryStateOnSurface state = trajectoryStateTransform::transientState( seed.startingState(), lastRecHit->surface(), theMF.product());
     TrajectoryStateClosestToBeamLine tsAtClosestApproachSeed = tscblBuilder(*state.freeState(),*beamSpot);//as in TrackProducerAlgorithm
     if(tsAtClosestApproachSeed.isValid()) {
       const reco::TrackBase::Point vSeed1(tsAtClosestApproachSeed.trackStateAtPCA().position().x(),
                                           tsAtClosestApproachSeed.trackStateAtPCA().position().y(),
                                           tsAtClosestApproachSeed.trackStateAtPCA().position().z());
       const reco::TrackBase::Vector pSeed(tsAtClosestApproachSeed.trackStateAtPCA().momentum().x(),
                                           tsAtClosestApproachSeed.trackStateAtPCA().momentum().y(),
                                           tsAtClosestApproachSeed.trackStateAtPCA().momentum().z());
       //GlobalPoint vSeed(vSeed1.x()-beamSpot->x0(),vSeed1.y()-beamSpot->y0(),vSeed1.z()-beamSpot->z0());
       PerigeeTrajectoryError seedPerigeeErrors = PerigeeConversions::ftsToPerigeeError(tsAtClosestApproachSeed.trackStateAtPCA());
       tracks->emplace_back(0.,0., vSeed1, pSeed, state.charge(), seedPerigeeErrors.covarianceMatrix());
     }
     else {
       edm::LogVerbatim("SeedValidator")<<"TrajectoryStateClosestToBeamLine not valid";
       // use magic values chi2<0, ndof<0, charge=0 to denote a case where the fit has failed
       // If this definition is changed, change also interface/trackFromSeedFitFailed.h
       tracks->emplace_back(-1, -1, reco::TrackBase::Point(), reco::TrackBase::Vector(), 0, reco::TrackBase::CovarianceMatrix());
       nfailed++;
     }

     tracks->back().appendHits(seed.recHits().first,seed.recHits().second,ttopo);
     // store the hits
     size_t firsthitindex = rechits->size();
     for(auto hitit = seed.recHits().first;hitit != seed.recHits().second;++hitit){
       rechits->push_back(*hitit);
     }

     // create a trackextra, just to store the hit range
     trackextras->push_back(TrackExtra());
     trackextras->back().setHits(ref_rechits,firsthitindex,rechits->size() - firsthitindex);
     trackextras->back().setSeedRef(edm::RefToBase<TrajectorySeed>(hseeds, iSeed));
     // create link between track and trackextra
     tracks->back().setExtra( TrackExtraRef( ref_trackextras, trackextras->size() - 1) );
   }
   
   if (nfailed > 0) {
     edm::LogInfo("SeedValidator") << "failed to create tracks from " << nfailed <<  " out of " << seeds.size() << " seeds ";
   }
   iEvent.put(std::move(tracks));
   iEvent.put(std::move(rechits));
   iEvent.put(std::move(trackextras));
}

Member Data Documentation

edm::EDGetTokenT<reco::BeamSpot> TrackFromSeedProducer::beamSpotToken

private

Definition at line 61 of file TrackFromSeedProducer.cc.

Referenced by produce(), and TrackFromSeedProducer().

edm::EDGetTokenT<edm::View<TrajectorySeed> > TrackFromSeedProducer::seedsToken

private

Definition at line 60 of file TrackFromSeedProducer.cc.

Referenced by produce(), and TrackFromSeedProducer().

std::string TrackFromSeedProducer::tTRHBuilderName

private

Definition at line 62 of file TrackFromSeedProducer.cc.

Referenced by produce(), and TrackFromSeedProducer().