#include <PerigeeTrajectoryError.h>

Public Member Functions
void	calculateWeightMatrix () const
const AlgebraicSymMatrix55 &	covarianceMatrix () const
const AlgebraicSymMatrix	covarianceMatrix_old () const
double	longitudinalImpactParameterError () const
	PerigeeTrajectoryError ()
	PerigeeTrajectoryError (const AlgebraicSymMatrix55 &aPerigeeError)
	PerigeeTrajectoryError (AlgebraicSymMatrix aPerigeeError)
double	phiError () const
double	thetaError () const
double	transverseCurvatureError () const
double	transverseImpactParameterError () const
const AlgebraicSymMatrix55 &	weightMatrix (int &error) const
const AlgebraicSymMatrix	weightMatrix_old (int &error) const
	~PerigeeTrajectoryError ()
Private Attributes
int	inverseError
AlgebraicSymMatrix55	thePerigeeError
AlgebraicSymMatrix55	thePerigeeWeight
bool	weightIsAvailable

Detailed Description

Class providing access to the Perigee parameters of a trajectory. These parameters consist of
transverse curvature (signed), theta, phi, transverse impact parameter (signed), longitudinal i.p.

Definition at line 14 of file PerigeeTrajectoryError.h.

Constructor & Destructor Documentation

PerigeeTrajectoryError::PerigeeTrajectoryError ( ) [inline]

Definition at line 19 of file PerigeeTrajectoryError.h.

{}

PerigeeTrajectoryError::~PerigeeTrajectoryError ( ) [inline]

Definition at line 20 of file PerigeeTrajectoryError.h.

{}

PerigeeTrajectoryError::PerigeeTrajectoryError ( AlgebraicSymMatrix aPerigeeError ) [inline]

Definition at line 22 of file PerigeeTrajectoryError.h.

                                                          :
    thePerigeeError(asSMatrix<5>(aPerigeeError)), weightIsAvailable(false) {}

PerigeeTrajectoryError::PerigeeTrajectoryError ( const AlgebraicSymMatrix55 & aPerigeeError ) [inline]

Definition at line 25 of file PerigeeTrajectoryError.h.

                                                                   :
    thePerigeeError(aPerigeeError), weightIsAvailable(false) {
         
  }

Member Function Documentation

void PerigeeTrajectoryError::calculateWeightMatrix ( ) const

Definition at line 5 of file PerigeeTrajectoryError.cc.

References inverseError, invertPosDefMatrix(), thePerigeeError, thePerigeeWeight, and weightIsAvailable.

Referenced by weightMatrix(), and weightMatrix_old().

                                                         {
  inverseError = invertPosDefMatrix(thePerigeeError, thePerigeeWeight) ?
    0 : 1;
  weightIsAvailable = true;
}

const AlgebraicSymMatrix55& PerigeeTrajectoryError::covarianceMatrix ( ) const [inline]

Definition at line 36 of file PerigeeTrajectoryError.h.

References thePerigeeError.

Referenced by PerigeeRefittedTrackState::covariance(), PerigeeConversions::curvilinearError(), PerigeeLinearizedTrackState::predictedStateError(), and PerigeeLinearizedTrackState::predictedStateMomentumError().

{return thePerigeeError;}

const AlgebraicSymMatrix PerigeeTrajectoryError::covarianceMatrix_old ( ) const [inline]

The covariance matrix

Definition at line 35 of file PerigeeTrajectoryError.h.

References asHepMatrix(), and thePerigeeError.

{return asHepMatrix(thePerigeeError);}

double PerigeeTrajectoryError::longitudinalImpactParameterError ( ) const [inline]

The longitudinal impact parameter

Definition at line 86 of file PerigeeTrajectoryError.h.

References mathSSE::sqrt(), and thePerigeeError.

Referenced by VertexFitterResult::fillErrors().

{return sqrt(thePerigeeError(4,4));}

double PerigeeTrajectoryError::phiError ( ) const [inline]

The phi angle

Definition at line 74 of file PerigeeTrajectoryError.h.

References mathSSE::sqrt(), and thePerigeeError.

Referenced by VertexFitterResult::fillErrors(), and MuonTrackingRegionBuilder::region().

{return sqrt(thePerigeeError(2,2));}

double PerigeeTrajectoryError::thetaError ( ) const [inline]

The theta angle

Definition at line 68 of file PerigeeTrajectoryError.h.

References mathSSE::sqrt(), and thePerigeeError.

Referenced by VertexFitterResult::fillErrors(), and MuonTrackingRegionBuilder::region().

{return sqrt(thePerigeeError(1,1));}

double PerigeeTrajectoryError::transverseCurvatureError ( ) const [inline]

Definition at line 62 of file PerigeeTrajectoryError.h.

References mathSSE::sqrt(), and thePerigeeError.

Referenced by VertexFitterResult::fillErrors().

{return sqrt(thePerigeeError(0,0));}

double PerigeeTrajectoryError::transverseImpactParameterError ( ) const [inline]

The (signed) transverse impact parameter

Definition at line 80 of file PerigeeTrajectoryError.h.

References mathSSE::sqrt(), and thePerigeeError.

Referenced by VertexFitterResult::fillErrors().

{return sqrt(thePerigeeError(3,3));}

const AlgebraicSymMatrix55& PerigeeTrajectoryError::weightMatrix ( int & error ) const [inline]

The weight matrix (inverse of the covariance matrix) The error variable is 0 in case of success.

Definition at line 53 of file PerigeeTrajectoryError.h.

References calculateWeightMatrix(), inverseError, thePerigeeWeight, and weightIsAvailable.

Referenced by PerigeeLinearizedTrackState::predictedStateWeight().

  {
    if (!weightIsAvailable) calculateWeightMatrix();
    error = inverseError;
    return thePerigeeWeight;
  }

const AlgebraicSymMatrix PerigeeTrajectoryError::weightMatrix_old ( int & error ) const [inline]

The weight matrix (inverse of the covariance matrix) The error variable is 0 in case of success.

Definition at line 43 of file PerigeeTrajectoryError.h.

References asHepMatrix(), calculateWeightMatrix(), inverseError, thePerigeeWeight, and weightIsAvailable.

                                                               {
    if (!weightIsAvailable) calculateWeightMatrix();
    error = inverseError;
    return asHepMatrix(thePerigeeWeight);
  }