EtaPhiEstimator Class Reference

#include <EtaPhiEstimator.h>

Inheritance diagram for EtaPhiEstimator:

Public Member Functions
virtual EtaPhiEstimator *	clone () const
virtual std::pair< bool, double >	estimate (const TrajectoryStateOnSurface &tsos, const TrackingRecHit &aRecHit) const
	EtaPhiEstimator (double eta, double phi, const Chi2MeasurementEstimatorBase *estimator)
Public Member Functions inherited from Chi2MeasurementEstimatorBase
	Chi2MeasurementEstimatorBase (double maxChi2, double nSigma=3.)
double	chiSquaredCut () const
virtual bool	estimate (const TrajectoryStateOnSurface &ts, const Plane &plane) const
virtual Local2DVector	maximalLocalDisplacement (const TrajectoryStateOnSurface &ts, const Plane &plane) const
double	nSigmaCut () const
Public Member Functions inherited from MeasurementEstimator
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
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

Definition at line 5 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 13 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

virtual EtaPhiEstimator* EtaPhiEstimator::clone ( void  ) const

inlinevirtual

Implements MeasurementEstimator.

Definition at line 45 of file EtaPhiEstimator.h.

References EtaPhiEstimator().

                                           {
      return new EtaPhiEstimator(*this);
    }

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

inlinevirtual

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 24 of file EtaPhiEstimator.h.

References DDVectorGetter::check(), 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 50 of file EtaPhiEstimator.h.

Referenced by estimate().

double EtaPhiEstimator::thedEta

private

Definition at line 51 of file EtaPhiEstimator.h.

double EtaPhiEstimator::thedEta2

private

Definition at line 51 of file EtaPhiEstimator.h.

Referenced by estimate().

double EtaPhiEstimator::thedPhi

private

Definition at line 51 of file EtaPhiEstimator.h.

double EtaPhiEstimator::thedPhi2

private

Definition at line 51 of file EtaPhiEstimator.h.

Referenced by estimate().