EtaPhiMeasurementEstimator Class Reference

#include <EtaPhiMeasurementEstimator.h>

Inheritance diagram for EtaPhiMeasurementEstimator:

Public Member Functions
EtaPhiMeasurementEstimator *	clone () const
std::pair< bool, double >	estimate (const TrajectoryStateOnSurface &, const TrackingRecHit &) const
virtual bool	estimate (const TrajectoryStateOnSurface &tsos, const Plane &plane) const
	EtaPhiMeasurementEstimator (double dEta, double dPhi)
virtual Local2DVector	maximalLocalDisplacement (const TrajectoryStateOnSurface &tsos, const Plane &plane) const
	~EtaPhiMeasurementEstimator ()
Public Member Functions inherited from Chi2MeasurementEstimatorBase
	Chi2MeasurementEstimatorBase (double maxChi2, double nSigma=3.)
double	chiSquaredCut () const
double	nSigmaCut () const
Public Member Functions inherited from MeasurementEstimator
virtual bool	preFilter (const TrajectoryStateOnSurface &, OpaquePayload const &) const
virtual	~MeasurementEstimator ()

Private Attributes
double	thedEta
double	thedPhi

Additional Inherited Members
Public Types inherited from MeasurementEstimator
typedef std::pair< bool, double >	HitReturnType
typedef Vector2DBase< float, LocalTag >	Local2DVector
typedef bool	SurfaceReturnType
Protected Member Functions inherited from Chi2MeasurementEstimatorBase
std::pair< bool, double >	returnIt (double est) const

Detailed Description

A EtaPhi Measurement Estimator. Computhes the Chi^2 of a TrajectoryState with a RecHit or a Plane. The TrajectoryState must have errors. Works for any RecHit dimension. Ported from ORCA.

tschudi

Definition at line 15 of file EtaPhiMeasurementEstimator.h.

Constructor & Destructor Documentation

EtaPhiMeasurementEstimator::EtaPhiMeasurementEstimator ( double  dEta, double  dPhi  )

inlineexplicit

Definition at line 18 of file EtaPhiMeasurementEstimator.h.

Referenced by clone().

                                                                : 
    Chi2MeasurementEstimatorBase( 0.0, 0.0),
    thedEta(dEta),
    thedPhi(dPhi)
   {}

EtaPhiMeasurementEstimator::~EtaPhiMeasurementEstimator ( )

inline

Definition at line 23 of file EtaPhiMeasurementEstimator.h.

{}

Member Function Documentation

EtaPhiMeasurementEstimator* EtaPhiMeasurementEstimator::clone ( void  ) const

inlinevirtual

Implements MeasurementEstimator.

Definition at line 34 of file EtaPhiMeasurementEstimator.h.

References EtaPhiMeasurementEstimator().

                                            {
    return new EtaPhiMeasurementEstimator(*this);
  }

std::pair< bool, double > EtaPhiMeasurementEstimator::estimate ( const TrajectoryStateOnSurface &  ts, const TrackingRecHit &  hit  ) const

virtual

Returns pair( true, value) if the TrajectoryStateOnSurface is compatible with the RecHit, and pair( false, value) if it is not compatible. The TrajectoryStateOnSurface must be on the same Surface as the RecHit. For an estimator where there is no value computed, e.g. fixed window estimator, only the first(bool) part is of interest.

Implements Chi2MeasurementEstimatorBase.

Definition at line 10 of file EtaPhiMeasurementEstimator.cc.

References dPhi(), PV3DBase< T, PVType, FrameType >::eta(), TrajectoryStateOnSurface::globalPosition(), TrackingRecHit::globalPosition(), LogDebug, PV3DBase< T, PVType, FrameType >::phi(), thedEta, and thedPhi.

                                                        {

  double dEta = fabs(tsos.globalPosition().eta() - aRecHit.globalPosition().eta());
  double dPhi = deltaPhi< double > (tsos.globalPosition().phi(), aRecHit.globalPosition().phi());

  LogDebug("EtaPhiMeasurementEstimator")<< " The state to compare with is \n"<< tsos
                    << " The hit position is:\n" << aRecHit.globalPosition()
                    << " deta: "<< dEta<< " dPhi: "<<dPhi;

  if (dEta < thedEta && dPhi <thedPhi)
    return std::make_pair(true, 1.0);
  else
    return std::make_pair(false, 0.0);
}

bool EtaPhiMeasurementEstimator::estimate ( const TrajectoryStateOnSurface &  ts, const Plane &  plane  ) const

virtual

Returns true if the TrajectoryStateOnSurface is compatible with the Plane, false otherwise. The TrajectoryStateOnSurface must be on the plane.

Reimplemented from Chi2MeasurementEstimatorBase.

Definition at line 26 of file EtaPhiMeasurementEstimator.cc.

References dPhi(), PV3DBase< T, PVType, FrameType >::eta(), TrajectoryStateOnSurface::globalPosition(), LogDebug, PV3DBase< T, PVType, FrameType >::phi(), GloballyPositioned< T >::position(), thedEta, and thedPhi.

                                             {

  double dEta = fabs(tsos.globalPosition().eta() - plane.position().eta());
  double dPhi = deltaPhi< double > (tsos.globalPosition().phi(), plane.position().phi());

  LogDebug("EtaPhiMeasurementEstimator")<< "The state to compare with is \n"<< tsos << "\n"
                    << "The plane position center is: " << plane.position() << "\n"
                    << "the deta = " << thedEta << " --- the dPhi = " << thedPhi << "\n"
                    << "deta = "<< fabs(dEta)<< " --- dPhi = "<<fabs(dPhi);

  if (fabs(dEta) < thedEta && fabs(dPhi) <thedPhi)
    return true;
  else
    return false;
}

MeasurementEstimator::Local2DVector EtaPhiMeasurementEstimator::maximalLocalDisplacement ( const TrajectoryStateOnSurface &  ts, const Plane &  plane  ) const

virtual

Returns the size of the compatibility region around the local position of the TrajectoryStateOnSurface along the directions of local x and y axis. The TrajectoryStateOnSurface must be on the plane. This method allows to limit the search for compatible detectors or RecHits. The MeasurementEstimator should not return "true" for any RecHit or Plane which is entirely outside of the compatibility region defined by maximalLocalDisplacement().

Reimplemented from Chi2MeasurementEstimatorBase.

Definition at line 43 of file EtaPhiMeasurementEstimator.cc.

                                              {

  return  Local2DVector(30., 30.);
}

Member Data Documentation

double EtaPhiMeasurementEstimator::thedEta

private

Definition at line 38 of file EtaPhiMeasurementEstimator.h.

Referenced by estimate().

double EtaPhiMeasurementEstimator::thedPhi

private

Definition at line 39 of file EtaPhiMeasurementEstimator.h.

Referenced by estimate().