SeedFromProtoTrack Class Reference

#include <SeedFromProtoTrack.h>

Public Member Functions
bool	isValid () const
	SeedFromProtoTrack (const reco::Track &proto, const edm::EventSetup &)
	SeedFromProtoTrack (const reco::Track &proto, const SeedingHitSet &hits, const edm::EventSetup &es)
TrajectorySeed	trajectorySeed () const
	~SeedFromProtoTrack ()

Private Types
typedef edm::OwnVector < TrackingRecHit >	RecHitContainer

Private Member Functions
PropagationDirection	direction () const
const RecHitContainer &	hits () const
void	init (const reco::Track &proto, const edm::EventSetup &es)
PTrajectoryStateOnDet	trajectoryState () const

Private Attributes
RecHitContainer	theHits
boost::shared_ptr < PTrajectoryStateOnDet >	thePTraj
bool	theValid

Detailed Description

Definition at line 13 of file SeedFromProtoTrack.h.

Member Typedef Documentation

typedef edm::OwnVector<TrackingRecHit> SeedFromProtoTrack::RecHitContainer

private

Definition at line 36 of file SeedFromProtoTrack.h.

Constructor & Destructor Documentation

SeedFromProtoTrack::SeedFromProtoTrack	(	const reco::Track &	proto,
		const edm::EventSetup &	es
	)

Definition at line 32 of file SeedFromProtoTrack.cc.

References TrackingRecHit::clone(), init(), edm::OwnVector< T, P >::push_back(), reco::Track::recHit(), reco::Track::recHitsSize(), and theHits.

  : theValid(true)
{
  const TrackingRecHit* hit = 0;
  for (unsigned int iHit = 0, nHits = proto.recHitsSize(); iHit < nHits; ++iHit) {
    TrackingRecHitRef refHit = proto.recHit(iHit);
    hit = &(*refHit);
    theHits.push_back( hit->clone() );
  }
  init(proto,es);
}

SeedFromProtoTrack::SeedFromProtoTrack	(	const reco::Track &	proto,
		const SeedingHitSet &	hits,
		const edm::EventSetup &	es
	)

Definition at line 21 of file SeedFromProtoTrack.cc.

References TrackingRecHit::clone(), i, init(), n, edm::OwnVector< T, P >::push_back(), SeedingHitSet::size(), and theHits.

  : theValid(true)
{
  for (unsigned int i= 0, n = hits.size(); i< n; ++i) {
    const TrackingRecHit * trh = hits[i]->hit();
   theHits.push_back( trh->clone() ); 
  }
  init(proto, es);
}

SeedFromProtoTrack::~SeedFromProtoTrack ( )

inline

Definition at line 21 of file SeedFromProtoTrack.h.

{}

Member Function Documentation

PropagationDirection SeedFromProtoTrack::direction ( ) const

inlineprivate

Definition at line 31 of file SeedFromProtoTrack.h.

References alongMomentum.

Referenced by trajectorySeed().

{ return alongMomentum; }

const RecHitContainer& SeedFromProtoTrack::hits ( ) const

inlineprivate

Definition at line 37 of file SeedFromProtoTrack.h.

References theHits.

Referenced by trajectorySeed().

{ return theHits; }

void SeedFromProtoTrack::init ( const reco::Track &  proto, const edm::EventSetup &  es  )

private

Definition at line 45 of file SeedFromProtoTrack.cc.

References edm::OwnVector< T, P >::back(), reco::TrackBase::charge(), reco::TrackBase::covariance(), TrackingRecHit::geographicalId(), edm::EventSetup::get(), TrajectoryStateOnSurface::isValid(), reco::TrackBase::momentum(), TrajectoryStateTransform::persistentState(), GloballyPositioned< T >::position(), Propagator::propagate(), LargeD0_PixelPairStep_cff::propagator, DetId::rawId(), reco::TrackBase::referencePoint(), mathSSE::return(), theHits, thePTraj, theValid, and patCandidatesForDimuonsSequences_cff::tracker.

Referenced by SeedFromProtoTrack().

{
  edm::ESHandle<TrackerGeometry> tracker;
  es.get<TrackerDigiGeometryRecord>().get(tracker);

  edm::ESHandle<Propagator>  propagatorHandle;
  es.get<TrackingComponentsRecord>().get("PropagatorWithMaterial",propagatorHandle);
  const Propagator*  propagator = &(*propagatorHandle);

  edm::ESHandle<MagneticField> field;
  es.get<IdealMagneticFieldRecord>().get(field);

  reco::TrackBase::Point  vtx = proto.referencePoint();
  reco::TrackBase::Vector mom = proto.momentum();
  GlobalTrajectoryParameters gtp( 
      GlobalPoint(vtx.x(),vtx.y(),vtx.z()),
      GlobalVector(mom.x(),mom.y(),mom.z()),
      proto.charge(),  &(*field) ); 

  CurvilinearTrajectoryError err = proto.covariance();

  FreeTrajectoryState fts( gtp, err);

  const TrackingRecHit & lastHit = theHits.back();

  TrajectoryStateOnSurface outerState =
      propagator->propagate(fts, tracker->idToDet(lastHit.geographicalId())->surface());

  if (!outerState.isValid()){    
    const Surface & surface = tracker->idToDet(lastHit.geographicalId())->surface();
    edm::LogError("SeedFromProtoTrack")<<" was trying to create a seed from:\n"<<fts<<"\n propagating to: "<<lastHit.geographicalId()<<surface.position();
    theValid = false;
    return ;
  }
  theValid = true;

  TrajectoryStateTransform transformer;
  thePTraj = boost::shared_ptr<PTrajectoryStateOnDet>(
      transformer.persistentState(outerState, lastHit.geographicalId().rawId()) );


}

bool SeedFromProtoTrack::isValid ( void  ) const

inline

Definition at line 25 of file SeedFromProtoTrack.h.

References theValid.

Referenced by SeedGeneratorFromProtoTracksEDProducer::produce(), and TSGFromL1Muon::produce().

{ return theValid; }

TrajectorySeed SeedFromProtoTrack::trajectorySeed

(

)

const

Definition at line 88 of file SeedFromProtoTrack.cc.

References direction(), hits(), and trajectoryState().

Referenced by SeedGeneratorFromProtoTracksEDProducer::produce(), and TSGFromL1Muon::produce().

{
  return TrajectorySeed( trajectoryState(), hits(), direction());
}

PTrajectoryStateOnDet SeedFromProtoTrack::trajectoryState ( ) const

inlineprivate

Definition at line 33 of file SeedFromProtoTrack.h.

References thePTraj.

Referenced by trajectorySeed().

{ return *thePTraj; }

Member Data Documentation

RecHitContainer SeedFromProtoTrack::theHits

private

Definition at line 42 of file SeedFromProtoTrack.h.

Referenced by hits(), init(), and SeedFromProtoTrack().

boost::shared_ptr<PTrajectoryStateOnDet> SeedFromProtoTrack::thePTraj

private

Definition at line 43 of file SeedFromProtoTrack.h.

Referenced by init(), and trajectoryState().

bool SeedFromProtoTrack::theValid

private

Definition at line 41 of file SeedFromProtoTrack.h.

Referenced by init(), and isValid().