Strip1DMeasurementTransformator Class Reference

#include <Strip1DMeasurementTransformator.h>

Public Member Functions
const TrackingRecHit &	hit () const
double	hitError () const
double	hitParameters () const
const StripTopology *	idealTopology () const
	return ideal topology, as if the sensor were flat More...
double	projectedTrajectoryError () const
double	projectedTrajectoryParameters () const
AM15	projectionMatrix () const
const TSOS &	state () const
	Strip1DMeasurementTransformator (const TSOS &aTsos, const TrackingRecHit &aHit)
const StripTopology *	topology () const
	return real topology, taking sensor deformations into account More...
const ASM55 &	trajectoryError () const
AV5	trajectoryParameters () const
	~Strip1DMeasurementTransformator ()

Private Types
typedef AlgebraicMatrix15	AM15
typedef AlgebraicSymMatrix55	ASM55
typedef AlgebraicVector5	AV5
typedef TrajectoryStateOnSurface	TSOS

Private Member Functions
void	init ()

Private Attributes
const StripTopology *	theIdealTopology
const TrackingRecHit &	theRecHit
TSOS	theState
const StripTopology *	theTopology

Detailed Description

Helper class for accessing the RecHit and the TrajectoryState parameters and errors in the measurement frame. The RecHits are treated as 1-dimensional, the second coordinate is ignored. Ported from ORCA.

Author

todorov, cerati

Definition at line 17 of file Strip1DMeasurementTransformator.h.

Member Typedef Documentation

AM15

typedef AlgebraicMatrix15 Strip1DMeasurementTransformator::AM15

private

Definition at line 21 of file Strip1DMeasurementTransformator.h.

ASM55

typedef AlgebraicSymMatrix55 Strip1DMeasurementTransformator::ASM55

private

Definition at line 20 of file Strip1DMeasurementTransformator.h.

AV5

typedef AlgebraicVector5 Strip1DMeasurementTransformator::AV5

private

Definition at line 22 of file Strip1DMeasurementTransformator.h.

TSOS

typedef TrajectoryStateOnSurface Strip1DMeasurementTransformator::TSOS

private

Definition at line 19 of file Strip1DMeasurementTransformator.h.

Constructor & Destructor Documentation

Strip1DMeasurementTransformator()

Strip1DMeasurementTransformator::Strip1DMeasurementTransformator	(	const TSOS &	aTsos,
		const TrackingRecHit &	aHit
	)

Definition at line 7 of file Strip1DMeasurementTransformator.cc.

    : theRecHit(hit), theState(tsos), theTopology(nullptr) {
  init();
}

References init().

~Strip1DMeasurementTransformator()

Strip1DMeasurementTransformator::~Strip1DMeasurementTransformator ( )

inline

Definition at line 27 of file Strip1DMeasurementTransformator.h.

{}

Member Function Documentation

hit()

const TrackingRecHit& Strip1DMeasurementTransformator::hit ( ) const

inline

Definition at line 37 of file Strip1DMeasurementTransformator.h.

{ return theRecHit; }

References theRecHit.

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

hitError()

double Strip1DMeasurementTransformator::hitError

(

)

const

Definition at line 29 of file Strip1DMeasurementTransformator.cc.

                                                       {
  return topology()->measurementError(hit().localPosition(), hit().localPositionError()).uu();
}

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

Referenced by KFStrip1DUpdator::update().

hitParameters()

double Strip1DMeasurementTransformator::hitParameters

(

)

const

Definition at line 17 of file Strip1DMeasurementTransformator.cc.

                                                            {
  return topology()->measurementPosition(hit().localPosition()).x();
}

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

Referenced by KFStrip1DUpdator::update().

idealTopology()

const StripTopology* Strip1DMeasurementTransformator::idealTopology ( ) const

inline

return ideal topology, as if the sensor were flat

Definition at line 40 of file Strip1DMeasurementTransformator.h.

{ return theIdealTopology; }

References theIdealTopology.

Referenced by projectionMatrix().

init()

void Strip1DMeasurementTransformator::init ( void  )

private

Definition at line 12 of file Strip1DMeasurementTransformator.cc.

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

References hit(), theIdealTopology, theTopology, and topology().

Referenced by Strip1DMeasurementTransformator().

projectedTrajectoryError()

double Strip1DMeasurementTransformator::projectedTrajectoryError

(

)

const

Definition at line 37 of file Strip1DMeasurementTransformator.cc.

                                                                       {
  return topology()->measurementError(state().localPosition(), state().localError().positionError()).uu();
}

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

Referenced by KFStrip1DUpdator::update().

projectedTrajectoryParameters()

double Strip1DMeasurementTransformator::projectedTrajectoryParameters

(

)

const

Definition at line 25 of file Strip1DMeasurementTransformator.cc.

                                                                            {
  return topology()->measurementPosition(state().localPosition()).x();
}

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

Referenced by KFStrip1DUpdator::update().

projectionMatrix()

AlgebraicMatrix15 Strip1DMeasurementTransformator::projectionMatrix

(

)

const

Definition at line 41 of file Strip1DMeasurementTransformator.cc.

                                                                          {
  //  H(measurement <- local)
  //  m_meas = H*x_local + c
  AlgebraicMatrix15 H;
  if (const RadialStripTopology* tmp = dynamic_cast<const RadialStripTopology*>(idealTopology())) {
    double yHitToInter = tmp->yDistanceToIntersection(hit().localPosition().y());
    double t = tmp->yAxisOrientation() * hit().localPosition().x() / yHitToInter;
    double c2 = 1. / (1. + t * t);  // cos(angle)**2
    //double cs = t*c2;           // sin(angle)*cos(angle); tan carries sign of sin!
    double s2 = 1. - c2;  // sin(angle)**2
    double A = tmp->angularWidth();
    // D is distance from intersection of edges to hit on strip
    double D2 = hit().localPosition().x() * hit().localPosition().x() + yHitToInter * yHitToInter;
    double D = std::sqrt(D2);
 
    double cp = std::sqrt(c2);
    double sp;
    if (t > 0) {
      sp = std::sqrt(s2);
    } else {
      sp = -std::sqrt(s2);
    }
    H(0, 3) = cp / (D * A);
    H(0, 4) = -sp / (D * A);
  } else {
    double phi = topology()->stripAngle(topology()->strip(state().localPosition()));
    double pitch = topology()->localPitch(state().localPosition());
    H(0, 3) = cos(phi) / pitch;
    H(0, 4) = sin(phi) / pitch;
  }
  return H;
}

References MaterialEffects_cfi::A, funct::cos(), CommonMethods::cp(), class-composition::H, hit(), idealTopology(), StripTopology::localPitch(), TrackingRecHit::localPosition(), phi, indexGen::s2, funct::sin(), mathSSE::sqrt(), state(), digitizers_cfi::strip, StripTopology::stripAngle(), OrderedSet::t, createJobs::tmp, topology(), PV3DBase< T, PVType, FrameType >::x(), and y.

Referenced by KFStrip1DUpdator::update().

state()

const TSOS& Strip1DMeasurementTransformator::state ( ) const

inline

Definition at line 38 of file Strip1DMeasurementTransformator.h.

{ return theState; }

References theState.

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

topology()

const StripTopology* Strip1DMeasurementTransformator::topology ( ) const

inline

return real topology, taking sensor deformations into account

Definition at line 42 of file Strip1DMeasurementTransformator.h.

{ return theTopology; }

References theTopology.

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

trajectoryError()

const AlgebraicSymMatrix55 & Strip1DMeasurementTransformator::trajectoryError

(

)

const

Definition at line 33 of file Strip1DMeasurementTransformator.cc.

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

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

Referenced by KFStrip1DUpdator::update().

trajectoryParameters()

AlgebraicVector5 Strip1DMeasurementTransformator::trajectoryParameters

(

)

const

Definition at line 21 of file Strip1DMeasurementTransformator.cc.

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

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

Referenced by KFStrip1DUpdator::update().

Member Data Documentation

theIdealTopology

const StripTopology * Strip1DMeasurementTransformator::theIdealTopology

private

Definition at line 47 of file Strip1DMeasurementTransformator.h.

Referenced by idealTopology(), and init().

theRecHit

const TrackingRecHit& Strip1DMeasurementTransformator::theRecHit

private

Definition at line 45 of file Strip1DMeasurementTransformator.h.

Referenced by hit().

theState

TSOS Strip1DMeasurementTransformator::theState

private

Definition at line 46 of file Strip1DMeasurementTransformator.h.

Referenced by state().

theTopology

const StripTopology* Strip1DMeasurementTransformator::theTopology

private

Definition at line 47 of file Strip1DMeasurementTransformator.h.

Referenced by init(), and topology().