EgammaHLTGsfTrackVarProducer::TrackExtrapolator Class Reference

Public Member Functions
GlobalVector	extrapolateTrackMomToPoint (const reco::GsfTrack &gsfTrack, const GlobalPoint &pointToExtrapTo)
GlobalPoint	extrapolateTrackPosToPoint (const reco::GsfTrack &gsfTrack, const GlobalPoint &pointToExtrapTo)
const MultiTrajectoryStateTransform *	mtsTransform () const
TrackExtrapolator *	operator= (const TrackExtrapolator &rhs)
void	setup (const edm::EventSetup &iSetup)
edm::ESHandle< TrackerGeometry >	trackerGeomHandle () const
	TrackExtrapolator ()
	TrackExtrapolator (const TrackExtrapolator &rhs)
	~TrackExtrapolator ()

Private Attributes
unsigned long long	cacheIDMagField_
unsigned long long	cacheIDTDGeom_
edm::ESHandle< MagneticField >	magField_
const MultiTrajectoryStateTransform *	mtsTransform_
edm::ESHandle< TrackerGeometry >	trackerHandle_

Detailed Description

Definition at line 62 of file EgammaHLTGsfTrackVarProducer.cc.

Constructor & Destructor Documentation

EgammaHLTGsfTrackVarProducer::TrackExtrapolator::TrackExtrapolator ( )

inline

Definition at line 72 of file EgammaHLTGsfTrackVarProducer.cc.

: cacheIDTDGeom_(0), cacheIDMagField_(0), mtsTransform_(nullptr) {}

EgammaHLTGsfTrackVarProducer::TrackExtrapolator::TrackExtrapolator

(

const TrackExtrapolator &

rhs

)

Definition at line 291 of file EgammaHLTGsfTrackVarProducer.cc.

References mtsTransform_.

    : cacheIDTDGeom_(rhs.cacheIDTDGeom_),
      cacheIDMagField_(rhs.cacheIDMagField_),
      magField_(rhs.magField_),
      trackerHandle_(rhs.trackerHandle_) {
  if (rhs.mtsTransform_)
    mtsTransform_ = new MultiTrajectoryStateTransform(*rhs.mtsTransform_);
  else
    mtsTransform_ = nullptr;
}

EgammaHLTGsfTrackVarProducer::TrackExtrapolator::~TrackExtrapolator ( )

inline

Definition at line 74 of file EgammaHLTGsfTrackVarProducer.cc.

References extrapolateTrackMomToPoint(), extrapolateTrackPosToPoint(), mtsTransform_, operator=(), and setup().

{ delete mtsTransform_; }

Member Function Documentation

GlobalVector EgammaHLTGsfTrackVarProducer::TrackExtrapolator::extrapolateTrackMomToPoint	(	const reco::GsfTrack &	gsfTrack,
		const GlobalPoint &	pointToExtrapTo
	)

Definition at line 350 of file EgammaHLTGsfTrackVarProducer.cc.

References DEFINE_FWK_MODULE, MultiTrajectoryStateTransform::extrapolatedState(), MultiTrajectoryStateTransform::innerStateOnSurface(), multiTrajectoryStateMode::momentumFromModeCartesian(), and mtsTransform().

Referenced by ~TrackExtrapolator().

                                                                      {
  TrajectoryStateOnSurface innTSOS = mtsTransform()->innerStateOnSurface(gsfTrack);
  TrajectoryStateOnSurface posTSOS = mtsTransform()->extrapolatedState(innTSOS, pointToExtrapTo);
  GlobalVector extrapolatedMom;
  multiTrajectoryStateMode::momentumFromModeCartesian(posTSOS, extrapolatedMom);
  return extrapolatedMom;
}

GlobalPoint EgammaHLTGsfTrackVarProducer::TrackExtrapolator::extrapolateTrackPosToPoint	(	const reco::GsfTrack &	gsfTrack,
		const GlobalPoint &	pointToExtrapTo
	)

Definition at line 341 of file EgammaHLTGsfTrackVarProducer.cc.

References MultiTrajectoryStateTransform::extrapolatedState(), MultiTrajectoryStateTransform::innerStateOnSurface(), mtsTransform(), and multiTrajectoryStateMode::positionFromModeCartesian().

Referenced by EgammaHLTGsfTrackVarProducer::produce(), and ~TrackExtrapolator().

                                                                      {
  TrajectoryStateOnSurface innTSOS = mtsTransform()->innerStateOnSurface(gsfTrack);
  TrajectoryStateOnSurface posTSOS = mtsTransform()->extrapolatedState(innTSOS, pointToExtrapTo);
  GlobalPoint extrapolatedPos;
  multiTrajectoryStateMode::positionFromModeCartesian(posTSOS, extrapolatedPos);
  return extrapolatedPos;
}

const MultiTrajectoryStateTransform* EgammaHLTGsfTrackVarProducer::TrackExtrapolator::mtsTransform ( ) const

inline

Definition at line 83 of file EgammaHLTGsfTrackVarProducer.cc.

References EgammaHLTGsfTrackVarProducer::EgammaHLTGsfTrackVarProducer(), EgammaHLTGsfTrackVarProducer::fillDescriptions(), mtsTransform_, EgammaHLTGsfTrackVarProducer::produce(), and EgammaHLTGsfTrackVarProducer::~EgammaHLTGsfTrackVarProducer().

Referenced by extrapolateTrackMomToPoint(), and extrapolateTrackPosToPoint().

{ return mtsTransform_; }

EgammaHLTGsfTrackVarProducer::TrackExtrapolator * EgammaHLTGsfTrackVarProducer::TrackExtrapolator::operator=

(

const TrackExtrapolator &

rhs

)

Definition at line 303 of file EgammaHLTGsfTrackVarProducer.cc.

References cacheIDMagField_, cacheIDTDGeom_, magField_, mtsTransform_, and trackerHandle_.

Referenced by ~TrackExtrapolator().

                                                              {
  if (this != &rhs) {  //just to ensure we're not copying ourselves
    cacheIDTDGeom_ = rhs.cacheIDTDGeom_;
    cacheIDMagField_ = rhs.cacheIDMagField_;
    magField_ = rhs.magField_;
    trackerHandle_ = rhs.trackerHandle_;

    delete mtsTransform_;
    if (rhs.mtsTransform_)
      mtsTransform_ = new MultiTrajectoryStateTransform(*rhs.mtsTransform_);
    else
      mtsTransform_ = nullptr;
  }
  return this;
}

void EgammaHLTGsfTrackVarProducer::TrackExtrapolator::setup

(

const edm::EventSetup &

iSetup

)

Definition at line 320 of file EgammaHLTGsfTrackVarProducer.cc.

References edm::eventsetup::EventSetupRecord::cacheIdentifier(), cacheIDMagField_, cacheIDTDGeom_, edm::EventSetup::get(), magField_, mtsTransform_, edm::ESHandle< T >::product(), and trackerHandle_.

Referenced by EgammaHLTGsfTrackVarProducer::produce(), and ~TrackExtrapolator().

                                                                                     {
  bool updateField(false);
  if (cacheIDMagField_ != iSetup.get<IdealMagneticFieldRecord>().cacheIdentifier()) {
    updateField = true;
    cacheIDMagField_ = iSetup.get<IdealMagneticFieldRecord>().cacheIdentifier();
    iSetup.get<IdealMagneticFieldRecord>().get(magField_);
  }

  bool updateGeometry(false);
  if (cacheIDTDGeom_ != iSetup.get<TrackerDigiGeometryRecord>().cacheIdentifier()) {
    updateGeometry = true;
    cacheIDTDGeom_ = iSetup.get<TrackerDigiGeometryRecord>().cacheIdentifier();
    iSetup.get<TrackerDigiGeometryRecord>().get(trackerHandle_);
  }

  if (updateField || updateGeometry || !mtsTransform_) {
    delete mtsTransform_;
    mtsTransform_ = new MultiTrajectoryStateTransform(trackerHandle_.product(), magField_.product());
  }
}

edm::ESHandle<TrackerGeometry> EgammaHLTGsfTrackVarProducer::TrackExtrapolator::trackerGeomHandle ( ) const

inline

Definition at line 82 of file EgammaHLTGsfTrackVarProducer.cc.

References trackerHandle_.

{ return trackerHandle_; }

Member Data Documentation

unsigned long long EgammaHLTGsfTrackVarProducer::TrackExtrapolator::cacheIDMagField_

private

Definition at line 64 of file EgammaHLTGsfTrackVarProducer.cc.

Referenced by operator=(), and setup().

unsigned long long EgammaHLTGsfTrackVarProducer::TrackExtrapolator::cacheIDTDGeom_

private

Definition at line 63 of file EgammaHLTGsfTrackVarProducer.cc.

Referenced by operator=(), and setup().

edm::ESHandle<MagneticField> EgammaHLTGsfTrackVarProducer::TrackExtrapolator::magField_

private

Definition at line 66 of file EgammaHLTGsfTrackVarProducer.cc.

Referenced by operator=(), and setup().

const MultiTrajectoryStateTransform* EgammaHLTGsfTrackVarProducer::TrackExtrapolator::mtsTransform_

private

Definition at line 69 of file EgammaHLTGsfTrackVarProducer.cc.

Referenced by mtsTransform(), operator=(), setup(), TrackExtrapolator(), and ~TrackExtrapolator().

edm::ESHandle<TrackerGeometry> EgammaHLTGsfTrackVarProducer::TrackExtrapolator::trackerHandle_

private

Definition at line 67 of file EgammaHLTGsfTrackVarProducer.cc.

Referenced by operator=(), setup(), and trackerGeomHandle().