MultiTrajectoryStateTransform Class Reference

#include <MultiTrajectoryStateTransform.h>

Public Member Functions
TrajectoryStateOnSurface	extrapolatedState (const TrajectoryStateOnSurface tsos, const GlobalPoint &point) const
bool	innerMomentumFromMode (const reco::GsfTrack &tk, GlobalVector &momentum) const
TrajectoryStateOnSurface	innerStateOnSurface (const reco::GsfTrack &tk) const
TrajectoryStateOnSurface	innerStateOnSurface (const reco::GsfTrack &tk, const TrackingGeometry &geom, const MagneticField *field) const
	MultiTrajectoryStateTransform ()
	MultiTrajectoryStateTransform (const TrackingGeometry *geom, const MagneticField *field)
bool	outerMomentumFromMode (const reco::GsfTrack &tk, GlobalVector &momentum) const
TrajectoryStateOnSurface	outerStateOnSurface (const reco::GsfTrack &tk) const
TrajectoryStateOnSurface	outerStateOnSurface (const reco::GsfTrack &tk, const TrackingGeometry &geom, const MagneticField *field) const
	~MultiTrajectoryStateTransform ()

Private Types
enum	{ dimension = reco::GsfTrackExtra::dimension }
typedef reco::GsfTrackExtra::LocalCovarianceMatrix	CovarianceMatrix
typedef reco::GsfTrackExtra::LocalParameterVector	ParameterVector

Private Member Functions
bool	checkExtrapolator () const
bool	checkGeometry () const
TrajectoryStateOnSurface	stateOnSurface (const std::vector< double > &weights, const std::vector< ParameterVector > &parameters, const std::vector< CovarianceMatrix > &covariances, const double &pzSign, const Surface &surface, const MagneticField *field) const

Private Attributes
TransverseImpactPointExtrapolator *	extrapolator_
const MagneticField *	field_
const TrackingGeometry *	geometry_

Detailed Description

Definition at line 18 of file MultiTrajectoryStateTransform.h.

Member Typedef Documentation

typedef reco::GsfTrackExtra::LocalCovarianceMatrix MultiTrajectoryStateTransform::CovarianceMatrix

private

Definition at line 21 of file MultiTrajectoryStateTransform.h.

typedef reco::GsfTrackExtra::LocalParameterVector MultiTrajectoryStateTransform::ParameterVector

private

Definition at line 20 of file MultiTrajectoryStateTransform.h.

Member Enumeration Documentation

anonymous enum

private

Enumerator
dimension

Definition at line 22 of file MultiTrajectoryStateTransform.h.

{ dimension = reco::GsfTrackExtra::dimension };

Constructor & Destructor Documentation

MultiTrajectoryStateTransform::MultiTrajectoryStateTransform ( )

inline

Default constructor (deprecated) -> ES components have to be passed explicitely

Definition at line 27 of file MultiTrajectoryStateTransform.h.

                                   :
  geometry_(0), field_(0), extrapolator_(0) {}

MultiTrajectoryStateTransform::MultiTrajectoryStateTransform ( const TrackingGeometry *  geom, const MagneticField *  field  )

inline

Constructor from geometry and magnetic field

Definition at line 30 of file MultiTrajectoryStateTransform.h.

                                                                                           :
  geometry_(geom), field_(field), extrapolator_(0) {}

MultiTrajectoryStateTransform::~MultiTrajectoryStateTransform

(

)

Destructor

Definition at line 17 of file MultiTrajectoryStateTransform.cc.

References extrapolator_.

{delete extrapolator_;}

Member Function Documentation

bool MultiTrajectoryStateTransform::checkExtrapolator ( ) const

private

On-demand creation of a TransverseImpactPointExtrapolator

Definition at line 127 of file MultiTrajectoryStateTransform.cc.

References AnalyticalPropagator_cfi::AnalyticalPropagator, anyDirection, extrapolator_, and field_.

Referenced by extrapolatedState().

{
  if ( extrapolator_ )  return true;

  if ( field_==0 ) {
    edm::LogError("MultiTrajectoryStateTransform") << "Missing magnetic field";
    return false;
  }

  GsfPropagatorAdapter gsfPropagator(AnalyticalPropagator(field_,anyDirection));
  extrapolator_ = new TransverseImpactPointExtrapolator(gsfPropagator);
  return true;
}

bool MultiTrajectoryStateTransform::checkGeometry ( ) const

private

Verification of the presence of geometry and field

Definition at line 111 of file MultiTrajectoryStateTransform.cc.

References field_, and geometry_.

Referenced by innerStateOnSurface(), and outerStateOnSurface().

{
  if ( geometry_ && field_ )  return true;

  edm::LogError("MultiTrajectoryStateTransform") << "Missing ES components";
  return false;
}

TrajectoryStateOnSurface MultiTrajectoryStateTransform::extrapolatedState	(	const TrajectoryStateOnSurface	tsos,
		const GlobalPoint &	point
	)		const

Extrapolation to a point using the TransverseImpactPointExtrapolator

Definition at line 120 of file MultiTrajectoryStateTransform.cc.

References checkExtrapolator(), TransverseImpactPointExtrapolator::extrapolate(), and extrapolator_.

Referenced by GsfElectronAlgo::ElectronData::calculateTSOS(), GsfElectronAlgo::ElectronData::getEleBasicCluster(), and EgammaHLTPixelMatchElectronAlgo::process().

{
  return checkExtrapolator() ? extrapolator_->extrapolate(tsos,point) : TrajectoryStateOnSurface();
}

bool MultiTrajectoryStateTransform::innerMomentumFromMode	(	const reco::GsfTrack &	tk,
		GlobalVector &	momentum
	)		const

Momentum vector from mode corresponding to the innermost state. Returns true for success.

Definition at line 39 of file MultiTrajectoryStateTransform.cc.

References MultiTrajectoryStateMode::momentumFromModeCartesian(), and outerStateOnSurface().

{
  return MultiTrajectoryStateMode().momentumFromModeCartesian(outerStateOnSurface(tk),momentum);
}

TrajectoryStateOnSurface MultiTrajectoryStateTransform::innerStateOnSurface

(

const reco::GsfTrack &

tk

)

const

TrajectoryStateOnSurface from the innermost state of a reco::GsfTrack

Definition at line 26 of file MultiTrajectoryStateTransform.cc.

References checkGeometry(), field_, and geometry_.

Referenced by PFTrackTransformer::addPointsAndBrems(), GsfElectronAlgo::ElectronData::calculateTSOS(), GsfConstraintAtVertex::constrainAtPoint(), reco::GsfTransientTrack::innermostMeasurementState(), EgammaHLTPixelMatchElectronAlgo::process(), and PFElecTkProducer::resolveGsfTracks().

{
  return checkGeometry() ? innerStateOnSurface(tk,*geometry_,field_) : TrajectoryStateOnSurface();
}

TrajectoryStateOnSurface MultiTrajectoryStateTransform::innerStateOnSurface	(	const reco::GsfTrack &	tk,
		const TrackingGeometry &	geom,
		const MagneticField *	field
	)		const

TrajectoryStateOnSurface from the innermost state of a reco::GsfTrack passing geometry and magnetic field (deprecated: use field from constructor)

Definition at line 61 of file MultiTrajectoryStateTransform.cc.

References reco::Track::extra(), reco::GsfTrack::gsfExtra(), TrackingGeometry::idToDet(), stateOnSurface(), and GeomDet::surface().

{
  const Surface& surface = geom.idToDet( DetId( tk.extra()->innerDetId()))->surface();

  const reco::GsfTrackExtraRef& extra(tk.gsfExtra());
  return stateOnSurface(extra->innerStateWeights(),
            extra->innerStateLocalParameters(),
            extra->innerStateCovariances(),
            extra->innerStateLocalPzSign(),
            surface,field);
}

bool MultiTrajectoryStateTransform::outerMomentumFromMode	(	const reco::GsfTrack &	tk,
		GlobalVector &	momentum
	)		const

Momentum vector from mode corresponding to the outermost state

Definition at line 32 of file MultiTrajectoryStateTransform.cc.

References MultiTrajectoryStateMode::momentumFromModeCartesian(), and outerStateOnSurface().

{
  return MultiTrajectoryStateMode().momentumFromModeCartesian(outerStateOnSurface(tk),momentum);
}

TrajectoryStateOnSurface MultiTrajectoryStateTransform::outerStateOnSurface

(

const reco::GsfTrack &

tk

)

const

TrajectoryStateOnSurface from the outermost state of a reco::GsfTrack

Definition at line 20 of file MultiTrajectoryStateTransform.cc.

References checkGeometry(), field_, and geometry_.

Referenced by PFTrackTransformer::addPointsAndBrems(), GsfElectronAlgo::ElectronData::calculateTSOS(), GsfElectronAlgo::ElectronData::getEleBasicCluster(), innerMomentumFromMode(), outerMomentumFromMode(), and reco::GsfTransientTrack::outermostMeasurementState().

{
  return checkGeometry() ? outerStateOnSurface(tk,*geometry_,field_) : TrajectoryStateOnSurface();
}

TrajectoryStateOnSurface MultiTrajectoryStateTransform::outerStateOnSurface	(	const reco::GsfTrack &	tk,
		const TrackingGeometry &	geom,
		const MagneticField *	field
	)		const

TrajectoryStateOnSurface from the outermost state of a reco::GsfTrack passing geometry and magnetic field (deprecated: use field from constructor)

Definition at line 46 of file MultiTrajectoryStateTransform.cc.

References reco::Track::extra(), reco::GsfTrack::gsfExtra(), TrackingGeometry::idToDet(), stateOnSurface(), and GeomDet::surface().

{
  const Surface& surface = geom.idToDet( DetId( tk.extra()->outerDetId()))->surface();

  const reco::GsfTrackExtraRef& extra(tk.gsfExtra());
  return stateOnSurface(extra->outerStateWeights(),
            extra->outerStateLocalParameters(),
            extra->outerStateCovariances(),
            extra->outerStateLocalPzSign(),
            surface,field);
}

TrajectoryStateOnSurface MultiTrajectoryStateTransform::stateOnSurface ( const std::vector< double > &  weights, const std::vector< ParameterVector > &  parameters, const std::vector< CovarianceMatrix > &  covariances, const double &  pzSign, const Surface &  surface, const MagneticField *  field  ) const

private

TSOS from a mixture in local parameters

Definition at line 76 of file MultiTrajectoryStateTransform.cc.

References makeMuonMisalignmentScenario::components, dimension, i, and vdt::le.

Referenced by innerStateOnSurface(), and outerStateOnSurface().

{
  if ( weights.empty() )  return TrajectoryStateOnSurface();
  
  unsigned int nc(weights.size());
  AlgebraicVector5 pars;
  AlgebraicSymMatrix55 cov;
  
  std::vector<TrajectoryStateOnSurface> components;
  components.reserve(nc);
  
  // create components TSOSs
  for ( unsigned int i=0; i<nc; i++ ) {
    // convert parameter vector and covariance matrix
    for ( unsigned int j1=0; j1<dimension; j1++ ) {
      pars[j1] = parameters[i](j1);
      for ( unsigned int j2=0; j2<=j1; j2++ ) 
    cov(j1,j2) = covariances[i](j1,j2);          //FIXME: SMatrix copy constructor should handle this!!
    }
    // create local parameters & errors
    LocalTrajectoryParameters lp(pars,pzSign);
    LocalTrajectoryError le(cov);
    // create component
    components.push_back(TrajectoryStateOnSurface(lp,le,surface,field,weights[i]));
  }
  return 
    TrajectoryStateOnSurface(new BasicMultiTrajectoryState(components));
}

Member Data Documentation

TransverseImpactPointExtrapolator* MultiTrajectoryStateTransform::extrapolator_

mutableprivate

Definition at line 77 of file MultiTrajectoryStateTransform.h.

Referenced by checkExtrapolator(), extrapolatedState(), and ~MultiTrajectoryStateTransform().

const MagneticField* MultiTrajectoryStateTransform::field_

private

Definition at line 76 of file MultiTrajectoryStateTransform.h.

Referenced by checkExtrapolator(), checkGeometry(), innerStateOnSurface(), and outerStateOnSurface().

const TrackingGeometry* MultiTrajectoryStateTransform::geometry_

private

Definition at line 75 of file MultiTrajectoryStateTransform.h.

Referenced by checkGeometry(), innerStateOnSurface(), and outerStateOnSurface().