EtaPhiEstimator Class Reference

#include <EtaPhiEstimator.h>

Inheritance diagram for EtaPhiEstimator:

Public Member Functions
EtaPhiEstimator *	clone () const override
std::pair< bool, double >	estimate (const TrajectoryStateOnSurface &tsos, const TrackingRecHit &aRecHit) const override
	EtaPhiEstimator (double eta, double phi, const Chi2MeasurementEstimatorBase *estimator)
Public Member Functions inherited from Chi2MeasurementEstimatorBase
	Chi2MeasurementEstimatorBase (double maxChi2, double nSigma=3., float maxDisp=std::numeric_limits< float >::max())
template<typename... Args>
	Chi2MeasurementEstimatorBase (double maxChi2, double nSigma, float maxDisp, Args &&...args)
double	chiSquaredCut () const
bool	estimate (const TrajectoryStateOnSurface &ts, const Plane &plane) const final
Local2DVector	maximalLocalDisplacement (const TrajectoryStateOnSurface &ts, const Plane &plane) const final
double	nSigmaCut () const
Public Member Functions inherited from MeasurementEstimator
float	maxSagitta () const
	MeasurementEstimator ()
	MeasurementEstimator (float maxSag, float minToll, float mpt)
float	minPt2ForHitRecoveryInGluedDet () const
float	minTolerance2 () const
virtual bool	preFilter (const TrajectoryStateOnSurface &, OpaquePayload const &) const
virtual	~MeasurementEstimator ()

Private Attributes
const Chi2MeasurementEstimatorBase *	estimator_
double	thedEta
double	thedEta2
double	thedPhi
double	thedPhi2

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

Detailed Description

Definition at line 8 of file EtaPhiEstimator.h.

Constructor & Destructor Documentation

EtaPhiEstimator::EtaPhiEstimator ( double  eta, double  phi, const Chi2MeasurementEstimatorBase *  estimator  )

inlineexplicit

Construct with cuts on chi2 and nSigma. The cut on Chi2 is used to define the acceptance of RecHits. The errors of the trajectory state are multiplied by nSigma to define acceptance of BoundPlane and maximalLocalDisplacement.

Definition at line 16 of file EtaPhiEstimator.h.

Referenced by clone().

                                                              : 
    Chi2MeasurementEstimatorBase(estimator->chiSquaredCut(),
                 estimator->nSigmaCut()),
    estimator_(estimator),
    thedEta(eta),
    thedPhi(phi),
    thedEta2(eta*eta),
    thedPhi2(phi*phi)
      { }

Member Function Documentation

EtaPhiEstimator* EtaPhiEstimator::clone ( void  ) const

inlineoverridevirtual

Implements MeasurementEstimator.

Definition at line 48 of file EtaPhiEstimator.h.

References EtaPhiEstimator().

                                            {
      return new EtaPhiEstimator(*this);
    }

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

inlineoverridevirtual

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 27 of file EtaPhiEstimator.h.

References trackerTree::check(), particleFlow_cfi::dEta, particleFlow_cfi::dPhi, Chi2MeasurementEstimatorBase::estimate(), estimator_, PV3DBase< T, PVType, FrameType >::eta(), TrajectoryStateOnSurface::globalPosition(), TrackingRecHit::globalPosition(), LogDebug, PV3DBase< T, PVType, FrameType >::phi(), thedEta2, and thedPhi2.

                                                                     {
      
      std::pair<bool,double> primaryResult = estimator_->estimate(tsos,aRecHit);

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

      double check = (dEta*dEta)/(thedEta2) + (dPhi*dPhi)/(thedPhi2);
      
      LogDebug("EtaPhiMeasurementEstimator")<< " The state to compare with is \n"<< tsos
                        << " The hit position is:\n" << aRecHit.globalPosition()
                        << " deta: "<< dEta<< " dPhi: "<<dPhi<<" check: "<<check<<" primaryly: "<< primaryResult.second;

      if (check <= 1)
    //      if (dEta < thedEta && dPhi <thedPhi)
    return std::make_pair(true, primaryResult.second);
      else
    return std::make_pair(false, primaryResult.second);
    }

Member Data Documentation

const Chi2MeasurementEstimatorBase* EtaPhiEstimator::estimator_

private

Definition at line 53 of file EtaPhiEstimator.h.

Referenced by estimate().

double EtaPhiEstimator::thedEta

private

Definition at line 54 of file EtaPhiEstimator.h.

double EtaPhiEstimator::thedEta2

private

Definition at line 54 of file EtaPhiEstimator.h.

Referenced by estimate().

double EtaPhiEstimator::thedPhi

private

Definition at line 54 of file EtaPhiEstimator.h.

double EtaPhiEstimator::thedPhi2

private

Definition at line 54 of file EtaPhiEstimator.h.

Referenced by estimate().