#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() [1/2]

PerigeeKinematicState::PerigeeKinematicState ( )

inline

Definition at line 23 of file PerigeeKinematicState.h.

                           {
     vl = false;
     errorIsAvailable = false;
   }

References errorIsAvailable, and vl.

◆ ~PerigeeKinematicState()

virtual PerigeeKinematicState::~PerigeeKinematicState ( )

inlinevirtual

Definition at line 28 of file PerigeeKinematicState.h.

28 {}

◆ PerigeeKinematicState() [2/2]

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

private

Definition at line 6 of file PerigeeKinematicState.cc.

     : 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));
 }

References pwdgSkimBPark_cfi::conversions, cov, runTheMatrix::err, KinematicState::freeTrajectoryState(), KinematicState::isValid(), PerigeeConversions::jacobianCurvilinear2Perigee(), findQualityFiles::jj, KinematicState::kinematicParametersError(), KinematicParametersError::matrix(), par, FreeTrajectoryState::parameters(), and DiDispStaMuonMonitor_cfi::pt.

Member Function Documentation

◆ hasError()

bool PerigeeKinematicState::hasError ( void ) const

inline

Access methods

Definition at line 32 of file PerigeeKinematicState.h.

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

References errorIsAvailable, and isValid().

Referenced by perigeeError().

◆ isValid()

bool PerigeeKinematicState::isValid ( void ) const

inline

Definition at line 38 of file PerigeeKinematicState.h.

38 { return vl; }

References vl.

Referenced by ntupleDataFormat._Object::_checkIsValid(), hasError(), perigeeError(), perigeeParameters(), core.AutoHandle.AutoHandle::ReallyLoad(), referencePoint(), and theState().

◆ jacobianCurvilinear2Perigee()

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

private

◆ perigeeError()

const ExtendedPerigeeTrajectoryError& PerigeeKinematicState::perigeeError ( ) const

inline

Returns the error matrix of extended perigee parametrization

Definition at line 59 of file PerigeeKinematicState.h.

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

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

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

◆ perigeeParameters()

const ExtendedPerigeeTrajectoryParameters& PerigeeKinematicState::perigeeParameters ( ) const

inline

Returns the extended perigee parameters

Definition at line 70 of file PerigeeKinematicState.h.

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

References isValid(), and par.

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

◆ referencePoint()

const GlobalPoint PerigeeKinematicState::referencePoint ( ) const

inline

Returns the reference point

Definition at line 49 of file PerigeeKinematicState.h.

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

References isValid(), and point.

◆ theState()

const KinematicState& PerigeeKinematicState::theState ( ) const

inline

Definition at line 40 of file PerigeeKinematicState.h.

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