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

typedef AlgebraicMatrix15 Strip1DMeasurementTransformator::AM15

private

Definition at line 23 of file Strip1DMeasurementTransformator.h.

typedef AlgebraicSymMatrix55 Strip1DMeasurementTransformator::ASM55

private

Definition at line 22 of file Strip1DMeasurementTransformator.h.

typedef AlgebraicVector5 Strip1DMeasurementTransformator::AV5

private

Definition at line 24 of file Strip1DMeasurementTransformator.h.

typedef TrajectoryStateOnSurface Strip1DMeasurementTransformator::TSOS

private

Definition at line 21 of file Strip1DMeasurementTransformator.h.

Constructor & Destructor Documentation

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

Definition at line 7 of file Strip1DMeasurementTransformator.cc.

References init().

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

  init();
}

Strip1DMeasurementTransformator::~Strip1DMeasurementTransformator ( )

inline

Definition at line 30 of file Strip1DMeasurementTransformator.h.

{}

Member Function Documentation

const TrackingRecHit& Strip1DMeasurementTransformator::hit ( ) const

inline

Definition at line 40 of file Strip1DMeasurementTransformator.h.

References theRecHit.

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

{return theRecHit;}

double Strip1DMeasurementTransformator::hitError

(

)

const

Definition at line 37 of file Strip1DMeasurementTransformator.cc.

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

Referenced by KFStrip1DUpdator::update().

                                                       {

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

double Strip1DMeasurementTransformator::hitParameters

(

)

const

Definition at line 22 of file Strip1DMeasurementTransformator.cc.

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

Referenced by KFStrip1DUpdator::update().

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

const StripTopology* Strip1DMeasurementTransformator::idealTopology ( ) const

inline

return ideal topology, as if the sensor were flat

Definition at line 43 of file Strip1DMeasurementTransformator.h.

References theIdealTopology.

Referenced by projectionMatrix().

{return theIdealTopology;}

void Strip1DMeasurementTransformator::init ( void  )

private

Definition at line 16 of file Strip1DMeasurementTransformator.cc.

References TrackingRecHit::detUnit(), hit(), theIdealTopology, theTopology, GeomDetType::topology(), GeomDet::topology(), and GeomDet::type().

Referenced by Strip1DMeasurementTransformator().

                                           {

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

double Strip1DMeasurementTransformator::projectedTrajectoryError

(

)

const

Definition at line 49 of file Strip1DMeasurementTransformator.cc.

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

Referenced by KFStrip1DUpdator::update().

                                                                       {

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

double Strip1DMeasurementTransformator::projectedTrajectoryParameters

(

)

const

Definition at line 32 of file Strip1DMeasurementTransformator.cc.

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

Referenced by KFStrip1DUpdator::update().

                                                                            {

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

AlgebraicMatrix15 Strip1DMeasurementTransformator::projectionMatrix

(

)

const

Definition at line 56 of file Strip1DMeasurementTransformator.cc.

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

Referenced by KFStrip1DUpdator::update().

                                                                          {

  //  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;
}

const TSOS& Strip1DMeasurementTransformator::state ( ) const

inline

Definition at line 41 of file Strip1DMeasurementTransformator.h.

References theState.

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

{return theState;}

const StripTopology* Strip1DMeasurementTransformator::topology ( ) const

inline

return real topology, taking sensor deformations into account

Definition at line 45 of file Strip1DMeasurementTransformator.h.

References theTopology.

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

{return theTopology;}

const AlgebraicSymMatrix55 & Strip1DMeasurementTransformator::trajectoryError

(

)

const

Definition at line 44 of file Strip1DMeasurementTransformator.cc.

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

Referenced by KFStrip1DUpdator::update().

                                                                                    {

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

AlgebraicVector5 Strip1DMeasurementTransformator::trajectoryParameters

(

)

const

Definition at line 27 of file Strip1DMeasurementTransformator.cc.

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

Referenced by KFStrip1DUpdator::update().

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

Member Data Documentation

const StripTopology * Strip1DMeasurementTransformator::theIdealTopology

private

Definition at line 51 of file Strip1DMeasurementTransformator.h.

Referenced by idealTopology(), and init().

const TrackingRecHit& Strip1DMeasurementTransformator::theRecHit

private

Definition at line 49 of file Strip1DMeasurementTransformator.h.

Referenced by hit().

TSOS Strip1DMeasurementTransformator::theState

private

Definition at line 50 of file Strip1DMeasurementTransformator.h.

Referenced by state().

const StripTopology* Strip1DMeasurementTransformator::theTopology

private

Definition at line 51 of file Strip1DMeasurementTransformator.h.

Referenced by init(), and topology().