StripMeasurementTransformator Class Reference

#include <StripMeasurementTransformator.h>

Public Member Functions
const TransientTrackingRecHit &	hit () const
ASM22	hitError () const
AV2	hitParameters () const
ASM22	projectedTrajectoryError () const
AV2	projectedTrajectoryParameters () const
AM25	projectionMatrix () const
const TSOS &	state () const
	StripMeasurementTransformator (const TSOS &aTsos, const TransientTrackingRecHit &aHit)
const StripTopology *	topology () const
const ASM55 &	trajectoryError () const
AV5	trajectoryParameters () const
	~StripMeasurementTransformator ()

Private Types
typedef AlgebraicMatrix	AM
typedef AlgebraicMatrix25	AM25
typedef AlgebraicSymMatrix22	ASM22
typedef AlgebraicSymMatrix55	ASM55
typedef AlgebraicVector2	AV2
typedef AlgebraicVector5	AV5
typedef TrajectoryStateOnSurface	TSOS

Private Member Functions
void	init ()

Private Attributes
const TransientTrackingRecHit &	theRecHit
TSOS	theState
const StripTopology *	theTopology

Detailed Description

Helper class for accessing the RecHit and the TrajectoryState parameters and errors in the measurement frame. Ported from ORCA.

Date:

2007/05/09 13:50:25

Revision:

1.4

Author

todorov, cerati

Definition at line 19 of file StripMeasurementTransformator.h.

Member Typedef Documentation

typedef AlgebraicMatrix StripMeasurementTransformator::AM

private

Definition at line 26 of file StripMeasurementTransformator.h.

typedef AlgebraicMatrix25 StripMeasurementTransformator::AM25

private

Definition at line 27 of file StripMeasurementTransformator.h.

typedef AlgebraicSymMatrix22 StripMeasurementTransformator::ASM22

private

Definition at line 24 of file StripMeasurementTransformator.h.

typedef AlgebraicSymMatrix55 StripMeasurementTransformator::ASM55

private

Definition at line 25 of file StripMeasurementTransformator.h.

typedef AlgebraicVector2 StripMeasurementTransformator::AV2

private

Definition at line 29 of file StripMeasurementTransformator.h.

typedef AlgebraicVector5 StripMeasurementTransformator::AV5

private

Definition at line 28 of file StripMeasurementTransformator.h.

typedef TrajectoryStateOnSurface StripMeasurementTransformator::TSOS

private

Definition at line 23 of file StripMeasurementTransformator.h.

Constructor & Destructor Documentation

StripMeasurementTransformator::StripMeasurementTransformator	(	const TSOS &	aTsos,
		const TransientTrackingRecHit &	aHit
	)

Definition at line 4 of file StripMeasurementTransformator.cc.

References init().

                                                                 : 
  theRecHit(hit),
  theState(tsos),
  theTopology(0) {

  init();
}

StripMeasurementTransformator::~StripMeasurementTransformator ( )

inline

Definition at line 35 of file StripMeasurementTransformator.h.

{}

Member Function Documentation

const TransientTrackingRecHit& StripMeasurementTransformator::hit ( void  ) const

inline

Definition at line 45 of file StripMeasurementTransformator.h.

References theRecHit.

Referenced by hitError(), hitParameters(), and init().

{return theRecHit;}

AlgebraicSymMatrix22 StripMeasurementTransformator::hitError

(

)

const

Definition at line 47 of file StripMeasurementTransformator.cc.

References hit(), Topology::measurementError(), topology(), MeasurementError::uu(), MeasurementError::uv(), and MeasurementError::vv().

Referenced by KFStripUpdator::update().

                                                                   {

  AlgebraicSymMatrix22 am;
   MeasurementError me = 
    topology()->measurementError(hit().localPosition(),
                 hit().localPositionError());
  am(0,0) = me.uu();
  am(1,0) = me.uv();
  am(1,1) = me.vv();
  
  return am;
}

AlgebraicVector2 StripMeasurementTransformator::hitParameters

(

)

const

Definition at line 19 of file StripMeasurementTransformator.cc.

References hit(), Topology::measurementPosition(), topology(), PV2DBase< T, PVType, FrameType >::x(), and PV2DBase< T, PVType, FrameType >::y().

Referenced by KFStripUpdator::update().

                                                                    {
  
  AlgebraicVector2 av;
  MeasurementPoint mp = 
    topology()->measurementPosition(hit().localPosition());
  av[0] = mp.x();
  av[1] = mp.y();

  return av;
}

void StripMeasurementTransformator::init ( void  )

private

Definition at line 13 of file StripMeasurementTransformator.cc.

References TransientTrackingRecHit::detUnit(), hit(), theTopology, and GeomDetUnit::topology().

Referenced by StripMeasurementTransformator().

                                         {

  theTopology = 
    dynamic_cast<const StripTopology*>(&(hit().detUnit()->topology()));
}

AlgebraicSymMatrix22 StripMeasurementTransformator::projectedTrajectoryError

(

)

const

Definition at line 66 of file StripMeasurementTransformator.cc.

References Topology::measurementError(), state(), topology(), MeasurementError::uu(), MeasurementError::uv(), and MeasurementError::vv().

Referenced by KFStripUpdator::update().

                                                              {

  AlgebraicSymMatrix22 am;
  MeasurementError me = 
    topology()->measurementError(state().localPosition(),
                 state().localError().positionError());
  am(0,0) = me.uu();
  am(1,0) = me.uv();
  am(1,1) = me.vv();

  return am;
}

AlgebraicVector2 StripMeasurementTransformator::projectedTrajectoryParameters

(

)

const

Definition at line 36 of file StripMeasurementTransformator.cc.

References Topology::measurementPosition(), state(), topology(), PV2DBase< T, PVType, FrameType >::x(), and PV2DBase< T, PVType, FrameType >::y().

Referenced by KFStripUpdator::update().

                                                                   {

  AlgebraicVector2 av;
  MeasurementPoint mp = 
    topology()->measurementPosition(state().localPosition());
  av[0] = mp.x();
  av[1] = mp.y();

  return av;
}

AlgebraicMatrix25 StripMeasurementTransformator::projectionMatrix

(

)

const

Definition at line 79 of file StripMeasurementTransformator.cc.

References funct::cos(), StripTopology::localPitch(), StripTopology::localStripLength(), phi, funct::sin(), state(), strip(), StripTopology::stripAngle(), and topology().

Referenced by KFStripUpdator::update().

                                                                        {

  // H(measurement <- local)
  // m_meas = H*x_local + c
  AlgebraicMatrix25 H;
  
  float phi = 
    topology()->stripAngle(topology()->strip(state().localPosition()));
  float pitch = topology()->localPitch(state().localPosition());
  float length = topology()->localStripLength(state().localPosition());
  H(0,3) = cos(phi)/pitch; H(0,4) = sin(phi)/pitch;
  H(1,3) = -sin(phi)/length; H(1,4) = cos(phi)/length;

  return H;
}

const TSOS& StripMeasurementTransformator::state ( ) const

inline

Definition at line 46 of file StripMeasurementTransformator.h.

References theState.

Referenced by projectedTrajectoryError(), projectedTrajectoryParameters(), projectionMatrix(), trajectoryError(), and trajectoryParameters().

{return theState;}

const StripTopology* StripMeasurementTransformator::topology ( ) const

inline

Definition at line 47 of file StripMeasurementTransformator.h.

References theTopology.

Referenced by hitError(), hitParameters(), projectedTrajectoryError(), projectedTrajectoryParameters(), and projectionMatrix().

{return theTopology;}

const AlgebraicSymMatrix55 & StripMeasurementTransformator::trajectoryError

(

)

const

Definition at line 60 of file StripMeasurementTransformator.cc.

References TrajectoryStateOnSurface::localError(), LocalTrajectoryError::matrix(), and state().

Referenced by KFStripUpdator::update().

                                                                                  {

  return state().localError().matrix();
}

AlgebraicVector5 StripMeasurementTransformator::trajectoryParameters

(

)

const

Definition at line 30 of file StripMeasurementTransformator.cc.

References TrajectoryStateOnSurface::localParameters(), state(), and LocalTrajectoryParameters::vector().

Referenced by KFStripUpdator::update().

                                                                           {
    
  return state().localParameters().vector();
}

Member Data Documentation

const TransientTrackingRecHit& StripMeasurementTransformator::theRecHit

private

Definition at line 51 of file StripMeasurementTransformator.h.

Referenced by hit().

TSOS StripMeasurementTransformator::theState

private

Definition at line 52 of file StripMeasurementTransformator.h.

Referenced by state().

const StripTopology* StripMeasurementTransformator::theTopology

private

Definition at line 53 of file StripMeasurementTransformator.h.

Referenced by init(), and topology().