Trk::LinearizedTrack Class Reference

#include <LinearizedTrack.h>

Collaboration diagram for Trk::LinearizedTrack:

Public Member Functions
	LinearizedTrack (const AmgVector(5) &expectedParametersAtPCA, const AmgSymMatrix(5) &expectedParErrorAtPCA, const Amg::Vector3D &linPoint, const AmgMatrix(5, 3) &positionJacobian, const AmgMatrix(5, 3) &momentumJacobian, const Amg::Vector3D &expectedPosition, const Amg::Vector3D &expectedMomentum, const AmgVector(5) &constantTerm)
	Constructor taking the perigee parameters and covariance matrix of the track, propagated to the point of closest approach of linearization point, position and momentum Jacobians, constant term of expansion, chi2, and weight of the current track.
	LinearizedTrack ()=default
	default operations
	LinearizedTrack (const LinearizedTrack &)=default
	LinearizedTrack (LinearizedTrack &&)=default
LinearizedTrack &	operator= (const LinearizedTrack &)=default
LinearizedTrack &	operator= (LinearizedTrack &&)=default
	~LinearizedTrack ()=default
LinearizedTrack *	clone () const
MsgStream &	dump (MsgStream &sl) const
	Output Method for MsgStream, to be overloaded by child classes.
std::ostream &	dump (std::ostream &sl) const
	Output Method for std::ostream, to be overloaded by child classes.
const	AmgMatrix (5, 3) &positionJacobian() const
	Position Jacobian access.
const	AmgMatrix (5, 3) &momentumJacobian() const
	Momentum Jacobian access.
const Amg::Vector3D &	expectedPositionAtPCA () const
	Access to the expected position at point of closet approach.
const Amg::Vector3D &	expectedMomentumAtPCA () const
	Access to the expected momentum at point of closet approach.
const	AmgVector (5) &const antTerm() const
	A constant term of Taylor expansion.
const	AmgSymMatrix (5) &expectedCovarianceAtPCA() const
	Access to the covariance and weight matrix of the trajectory state.
	AmgSymMatrix (5) expectedWeightAtPCA() const
	Access to the expected weight matrix at point of closest approach.
const	AmgVector (5) &expectedParametersAtPCA() const
	Access to the parameters at point of closest approach.
bool	isValid () const
	Class validity check.
const Amg::Vector3D &	linearizationPoint () const
	An access to an actual linearization point.

Private Member Functions
	AmgVector (5) m_ExpectedParametersAtPOCA
	AmgSymMatrix (5) m_ExpectedCovarianceAtPOCA
	AmgMatrix (5, 3) m_PositionJacobian
	AmgMatrix (5, 3) m_MomentumJacobian
	AmgVector (5) m_ConstantTerm

Private Attributes
Amg::Vector3D	m_linPoint
Amg::Vector3D	m_ExpectedPositionAtPOCA
Amg::Vector3D	m_ExpectedMomentumAtPOCA
bool	m_vl = false

Detailed Description

Definition at line 42 of file LinearizedTrack.h.

Constructor & Destructor Documentation

LinearizedTrack() [1/4]

Trk::LinearizedTrack::LinearizedTrack	(	const AmgVector(5) &	expectedParametersAtPCA,
		const AmgSymMatrix(5) &	expectedParErrorAtPCA,
		const Amg::Vector3D &	linPoint,
		const AmgMatrix(5, 3) &	positionJacobian,
		const AmgMatrix(5, 3) &	momentumJacobian,
		const Amg::Vector3D &	expectedPosition,
		const Amg::Vector3D &	expectedMomentum,
		const AmgVector(5) &	constantTerm )

Constructor taking the perigee parameters and covariance matrix of the track, propagated to the point of closest approach of linearization point, position and momentum Jacobians, constant term of expansion, chi2, and weight of the current track.

Definition at line 19 of file LinearizedTrack.cxx.

  : m_ExpectedParametersAtPOCA(expectedParametersAtPCA)
  , m_ExpectedCovarianceAtPOCA(expectedParErrorAtPCA)
  , m_linPoint(linPoint)
  , m_PositionJacobian(positionJacobian)
  , m_MomentumJacobian(momentumJacobian)
  , m_ExpectedPositionAtPOCA(expectedPositionAtPCA)
  , m_ExpectedMomentumAtPOCA(expectedMomentumAtPCA)
  , m_ConstantTerm(constantTerm)
  , m_vl(true)
{}

LinearizedTrack() [2/4]

Trk::LinearizedTrack::LinearizedTrack ( )

default

default operations

LinearizedTrack() [3/4]

Trk::LinearizedTrack::LinearizedTrack ( const LinearizedTrack & )

default

LinearizedTrack() [4/4]

Trk::LinearizedTrack::LinearizedTrack ( LinearizedTrack && )

default

~LinearizedTrack()

Trk::LinearizedTrack::~LinearizedTrack ( )

default

Member Function Documentation

AmgMatrix() [1/4]

const Trk::LinearizedTrack::AmgMatrix ( 5 , 3  ) const &

inline

Momentum Jacobian access.

Definition at line 95 of file LinearizedTrack.h.

  {
    return m_MomentumJacobian;
  }

AmgMatrix() [2/4]

const Trk::LinearizedTrack::AmgMatrix ( 5 , 3  ) const &

inline

Position Jacobian access.

Definition at line 87 of file LinearizedTrack.h.

  {
    return m_PositionJacobian;
  }

AmgMatrix() [3/4]

Trk::LinearizedTrack::AmgMatrix ( 5 , 3  )

private

AmgMatrix() [4/4]

Trk::LinearizedTrack::AmgMatrix ( 5 , 3  )

private

AmgSymMatrix() [1/3]

const Trk::LinearizedTrack::AmgSymMatrix

(

5

)

const &

Access to the covariance and weight matrix of the trajectory state.

The parametrization obtained through these methods depends on the actual TrackParameters current LinearizedTrack was created with. So far it can be perigee for charged track or "quasy perigee" for a neutral one. In the latter case, the 1/p is used instead of the corresponding q/p data member.

AmgSymMatrix() [2/3]

Trk::LinearizedTrack::AmgSymMatrix

(

5

)

const

Access to the expected weight matrix at point of closest approach.

Note that m_ExpectedCovarianceAtPOCA stores a covariance matrix, this function will just invert it. No caching mechanism is implemented for now.

AmgSymMatrix() [3/3]

Trk::LinearizedTrack::AmgSymMatrix ( 5 )

private

AmgVector() [1/4]

const Trk::LinearizedTrack::AmgVector ( 5 ) const &

inline

A constant term of Taylor expansion.

Definition at line 121 of file LinearizedTrack.h.

{ return m_ConstantTerm; }

AmgVector() [2/4]

const Trk::LinearizedTrack::AmgVector

(

5

)

const &

Access to the parameters at point of closest approach.

AmgVector() [3/4]

Trk::LinearizedTrack::AmgVector ( 5 )

private

AmgVector() [4/4]

Trk::LinearizedTrack::AmgVector ( 5 )

private

clone()

LinearizedTrack * Trk::LinearizedTrack::clone

(

)

const

Definition at line 40 of file LinearizedTrack.cxx.

{
  if (m_vl) {
    return new LinearizedTrack(m_ExpectedParametersAtPOCA,
                               m_ExpectedCovarianceAtPOCA,
                               m_linPoint,
                               m_PositionJacobian,
                               m_MomentumJacobian,
                               m_ExpectedPositionAtPOCA,
                               m_ExpectedMomentumAtPOCA,
                               m_ConstantTerm);
  }
  return new LinearizedTrack();
} // end of clone method

dump() [1/2]

MsgStream & Trk::LinearizedTrack::dump

(

MsgStream &

sl

)

const

Output Method for MsgStream, to be overloaded by child classes.

dump() [2/2]

std::ostream & Trk::LinearizedTrack::dump

(

std::ostream &

sl

)

const

Output Method for std::ostream, to be overloaded by child classes.

expectedMomentumAtPCA()

const Amg::Vector3D & Trk::LinearizedTrack::expectedMomentumAtPCA ( ) const

inline

Access to the expected momentum at point of closet approach.

Definition at line 113 of file LinearizedTrack.h.

  {
    return m_ExpectedMomentumAtPOCA;
  }

expectedPositionAtPCA()

const Amg::Vector3D & Trk::LinearizedTrack::expectedPositionAtPCA ( ) const

inline

Access to the expected position at point of closet approach.

Definition at line 104 of file LinearizedTrack.h.

  {
    return m_ExpectedPositionAtPOCA;
  }

isValid()

bool Trk::LinearizedTrack::isValid ( ) const

inline

Class validity check.

Definition at line 149 of file LinearizedTrack.h.

{ return m_vl; }

linearizationPoint()

const Amg::Vector3D & Trk::LinearizedTrack::linearizationPoint ( ) const

inline

An access to an actual linearization point.

Definition at line 154 of file LinearizedTrack.h.

{ return m_linPoint; }

operator=() [1/2]

LinearizedTrack & Trk::LinearizedTrack::operator= ( const LinearizedTrack & )

default

operator=() [2/2]

LinearizedTrack & Trk::LinearizedTrack::operator= ( LinearizedTrack && )

default

Member Data Documentation

m_ExpectedMomentumAtPOCA

Amg::Vector3D Trk::LinearizedTrack::m_ExpectedMomentumAtPOCA

private

Definition at line 163 of file LinearizedTrack.h.

m_ExpectedPositionAtPOCA

Amg::Vector3D Trk::LinearizedTrack::m_ExpectedPositionAtPOCA

private

Definition at line 162 of file LinearizedTrack.h.

m_linPoint

Amg::Vector3D Trk::LinearizedTrack::m_linPoint

private

Definition at line 159 of file LinearizedTrack.h.

m_vl

bool Trk::LinearizedTrack::m_vl = false

private

Definition at line 166 of file LinearizedTrack.h.

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The documentation for this class was generated from the following files:

• LinearizedTrack.h
• LinearizedTrack.cxx