PerigeeKinematicState Class Reference

#include <PerigeeKinematicState.h>

Public Member Functions
bool	hasError () const
bool	isValid () const
const ExtendedPerigeeTrajectoryError &	perigeeError () const
	PerigeeKinematicState ()
const ExtendedPerigeeTrajectoryParameters &	perigeeParameters () const
const GlobalPoint	referencePoint () const
const KinematicState &	theState () const
virtual	~PerigeeKinematicState ()

Private Member Functions
AlgebraicMatrix	jacobianCurvilinear2Perigee (const FreeTrajectoryState &fts) const
	PerigeeKinematicState (const KinematicState &state, const GlobalPoint &pt)

Private Attributes
ExtendedPerigeeTrajectoryError	cov
bool	errorIsAvailable
KinematicState	inState
ExtendedPerigeeTrajectoryParameters	par
GlobalPoint	point
bool	vl

Friends
class	TransientTrackKinematicStateBuilder

Detailed Description

Class caching the "extended" perigee parametrization for vertex fitting inside the KinematicFit library. Extended parameters are: (epsilon, rho, phi, theta_p, z_p, m) (see TrajectoryStateClosestToPoint class for reference)

Kirill Prokofiev, august 2003

Definition at line 21 of file PerigeeKinematicState.h.

Constructor & Destructor Documentation

PerigeeKinematicState::PerigeeKinematicState ( )

inline

Definition at line 25 of file PerigeeKinematicState.h.

References errorIsAvailable, and vl.

 {
  vl = false;
  errorIsAvailable = false;
 }

virtual PerigeeKinematicState::~PerigeeKinematicState ( )

inlinevirtual

Definition at line 31 of file PerigeeKinematicState.h.

{}

PerigeeKinematicState::PerigeeKinematicState ( const KinematicState &  state, const GlobalPoint &  pt  )

private

Definition at line 6 of file PerigeeKinematicState.cc.

References conversions_cfi::conversions, cov, KinematicPerigeeConversions::extendedPerigeeFromKinematicParameters(), KinematicState::freeTrajectoryState(), KinematicState::isValid(), PerigeeConversions::jacobianCurvilinear2Perigee(), findQualityFiles::jj, KinematicState::kinematicParametersError(), KinematicParametersError::matrix(), par, and FreeTrajectoryState::parameters().

                                                                                              :
 point(pt), inState(state),  errorIsAvailable(true),vl(true)
{
 if(!(state.isValid())) throw VertexException("PerigeeKinematicState::kinematic state passed is not valid!");

//working with parameters:
 KinematicPerigeeConversions conversions;
 par  = conversions.extendedPerigeeFromKinematicParameters(state,pt);
   
//creating the error
 AlgebraicSymMatrix77 const & err = state.kinematicParametersError().matrix();

//making jacobian for curvilinear frame
 JacobianCartesianToCurvilinear jj(state.freeTrajectoryState().parameters());  
 AlgebraicMatrix67 ki2cu;
 ki2cu.Place_at(jj.jacobian(),0,0);
 ki2cu(5,6) = 1.;
 AlgebraicMatrix66 cu2pe;
 cu2pe.Place_at(PerigeeConversions::jacobianCurvilinear2Perigee(state.freeTrajectoryState()),0,0);
 cu2pe(5,5) = 1.;
 AlgebraicMatrix67 jacobian = cu2pe*ki2cu;

 cov = ExtendedPerigeeTrajectoryError(ROOT::Math::Similarity(jacobian, err));

}

Member Function Documentation

bool PerigeeKinematicState::hasError ( void  ) const

inline

Access methods

Definition at line 35 of file PerigeeKinematicState.h.

References errorIsAvailable, and isValid().

Referenced by perigeeError().

 {
  if(!(isValid()))throw VertexException("PerigeeKinematicState::error is requested for the invalid state");
  return errorIsAvailable;
 }

bool PerigeeKinematicState::isValid ( void  ) const

inline

Definition at line 41 of file PerigeeKinematicState.h.

References vl.

Referenced by hasError(), ParticleKinematicLinearizedTrackState::hasError(), perigeeError(), perigeeParameters(), referencePoint(), and theState().

 {return vl;}

AlgebraicMatrix PerigeeKinematicState::jacobianCurvilinear2Perigee ( const FreeTrajectoryState &  fts ) const

private

const ExtendedPerigeeTrajectoryError& PerigeeKinematicState::perigeeError ( ) const

inline

Returns the error matrix of extended perigee parametrization

Definition at line 63 of file PerigeeKinematicState.h.

References cov, hasError(), and isValid().

Referenced by ParticleKinematicLinearizedTrackState::predictedStateError(), ParticleKinematicLinearizedTrackState::predictedStateMomentumError(), and ParticleKinematicLinearizedTrackState::predictedStateWeight().

 {
  if(!(isValid()))  throw VertexException("PerigeeKinematicState::requesting perigee error for invalid state");
  if(!(hasError())) throw VertexException("PerigeeKinematicState::requesting perigee error when none available");
  return cov;
 }

const ExtendedPerigeeTrajectoryParameters& PerigeeKinematicState::perigeeParameters ( ) const

inline

Returns the extended perigee parameters

Definition at line 73 of file PerigeeKinematicState.h.

References isValid(), and par.

Referenced by ParticleKinematicLinearizedTrackState::predictedStateMomentumParameters(), and ParticleKinematicLinearizedTrackState::predictedStateParameters().

 {
  if(!(isValid()))  throw VertexException("PerigeeKinematicState::requesting perigee parameters for invalid state");
  return par;
 }

const GlobalPoint PerigeeKinematicState::referencePoint ( ) const

inline

Returns the reference point

Definition at line 53 of file PerigeeKinematicState.h.

References isValid(), and point.

 {
  if(!isValid()) throw VertexException("PerigeeKinematicState::point is requested for the invalid state");
  return point;
 }

const KinematicState& PerigeeKinematicState::theState ( ) const

inline

Definition at line 44 of file PerigeeKinematicState.h.

References inState, and isValid().

Referenced by ParticleKinematicLinearizedTrackState::computeChargedJacobians(), and ParticleKinematicLinearizedTrackState::computeNeutralJacobians().

 {
  if(!isValid()) throw VertexException("PerigeeKinematicState::initial state is requested for the invalid state");
  return inState;
 }

Friends And Related Function Documentation

friend class TransientTrackKinematicStateBuilder

friend

Definition at line 81 of file PerigeeKinematicState.h.

Member Data Documentation

ExtendedPerigeeTrajectoryError PerigeeKinematicState::cov

private

Definition at line 96 of file PerigeeKinematicState.h.

Referenced by perigeeError(), and PerigeeKinematicState().

bool PerigeeKinematicState::errorIsAvailable

private

Definition at line 98 of file PerigeeKinematicState.h.

Referenced by hasError(), and PerigeeKinematicState().

KinematicState PerigeeKinematicState::inState

private

Definition at line 97 of file PerigeeKinematicState.h.

Referenced by theState().

ExtendedPerigeeTrajectoryParameters PerigeeKinematicState::par

private

Definition at line 95 of file PerigeeKinematicState.h.

Referenced by PerigeeKinematicState(), and perigeeParameters().

GlobalPoint PerigeeKinematicState::point

private

Definition at line 94 of file PerigeeKinematicState.h.

Referenced by referencePoint().

bool PerigeeKinematicState::vl

private

Definition at line 99 of file PerigeeKinematicState.h.

Referenced by isValid(), and PerigeeKinematicState().