Trk::VertexOnTrack Class Reference

Class to handle Vertex On Tracks, it inherits from the common MeasurementBase. More...

#include <VertexOnTrack.h>

Inheritance diagram for Trk::VertexOnTrack:

Collaboration diagram for Trk::VertexOnTrack:

Public Member Functions
	VertexOnTrack ()=default
	Default Constructor for POOL.
	VertexOnTrack (const VertexOnTrack &)=default
	VertexOnTrack (VertexOnTrack &&) noexcept=default
VertexOnTrack &	operator= (const VertexOnTrack &)=default
VertexOnTrack &	operator= (VertexOnTrack &&) noexcept=default
virtual	~VertexOnTrack ()=default
	VertexOnTrack (LocalParameters &&locpars, Amg::MatrixX &&locerr, const PerigeeSurface &assocSurf)
	Constructor with (LocalParameters&, LocalErrorMatrix&, PerigeeSurface&) The associated PerigeeSurface is cloned.
	VertexOnTrack (LocalParameters &&locpars, Amg::MatrixX &&locerr, SurfaceUniquePtrT< const PerigeeSurface > assocSurf)
	VertexOnTrack (const Trk::RecVertex &rvertex, const Trk::Perigee &mperigee)
	Constructor from: RedVertex, Perigee - the perigee is needed for the measurement frame.
VertexOnTrack *	clone () const override final
	Pseudo-constructor, needed to avoid excessive RTTI.
std::unique_ptr< VertexOnTrack >	uniqueClone () const
	NVI clone returning unique_ptr.
virtual const PerigeeSurface &	associatedSurface () const override final
	returns the surface for the local to global transformation
virtual const Amg::Vector3D &	globalPosition () const override final
	Interface method to get the global Position.
virtual bool	type (MeasurementBaseType::Type type) const override final
	Extended method checking the type.
virtual MsgStream &	dump (MsgStream &out) const override final
	returns the some information about this VertexOnTrack.
virtual std::ostream &	dump (std::ostream &out) const override final
	returns the some information about this VertexOnTrack.
const LocalParameters &	localParameters () const
	Interface method to get the LocalParameters.
const Amg::MatrixX &	localCovariance () const
	Interface method to get the localError.
void	destroySurface () noexcept
	destroySurface deletes the ptr if not null and the surface isFree Usefull also for testing
const PerigeeSurface *	surfacePtr ()
	return the ptr we hold useful for tests
const PerigeeSurface *	release () noexcept
	release ala unique_ptr release

Static Public Member Functions
static const PerigeeSurface *	cloneHelper (const PerigeeSurface *input)
	Helper for cloning or not when we need depending on if the surface isFree.

Protected Attributes
std::optional< Amg::Vector3D >	m_globalPosition = std::nullopt
	Global position of the VoT.
LocalParameters	m_localParams
Amg::MatrixX	m_localCovariance
const PerigeeSurface *	m_associatedSurface

Friends
class	::TrackCollectionCnv

Detailed Description

Class to handle Vertex On Tracks, it inherits from the common MeasurementBase.

Author

haert.nosp@m.el@m.nosp@m.ppmu..nosp@m.mpg..nosp@m.de

christos anastopoulos (Athena MT modification)

Definition at line 42 of file VertexOnTrack.h.

Constructor & Destructor Documentation

VertexOnTrack() [1/6]

Trk::VertexOnTrack::VertexOnTrack ( )

default

Default Constructor for POOL.

VertexOnTrack() [2/6]

Trk::VertexOnTrack::VertexOnTrack ( const VertexOnTrack & )

default

VertexOnTrack() [3/6]

Trk::VertexOnTrack::VertexOnTrack ( VertexOnTrack && )

defaultnoexcept

~VertexOnTrack()

virtual Trk::VertexOnTrack::~VertexOnTrack ( )

virtualdefault

VertexOnTrack() [4/6]

Trk::VertexOnTrack::VertexOnTrack	(	LocalParameters &&	locpars,
		Amg::MatrixX &&	locerr,
		const PerigeeSurface &	assocSurf )

Constructor with (LocalParameters&, LocalErrorMatrix&, PerigeeSurface&) The associated PerigeeSurface is cloned.

Definition at line 24 of file VertexOnTrack.cxx.

  : Trk::MeasurementBase(std::move(locpars), std::move(locerr))
  , PerigeeSurfacePtrHolder(assocSurf)
  , m_globalPosition(std::nullopt)
{}

VertexOnTrack() [5/6]

Trk::VertexOnTrack::VertexOnTrack	(	LocalParameters &&	locpars,
		Amg::MatrixX &&	locerr,
		Trk::SurfaceUniquePtrT< const PerigeeSurface >	assocSurf )

Definition at line 32 of file VertexOnTrack.cxx.

  : Trk::MeasurementBase(std::move(locpars), std::move(locerr))
  , PerigeeSurfacePtrHolder(assocSurf.release())
  , m_globalPosition(std::nullopt)
{}

VertexOnTrack() [6/6]

Trk::VertexOnTrack::VertexOnTrack	(	const Trk::RecVertex &	rvertex,
		const Trk::Perigee &	mperigee )

Constructor from: RedVertex, Perigee - the perigee is needed for the measurement frame.

Definition at line 42 of file VertexOnTrack.cxx.

  : Trk::MeasurementBase()
  , PerigeeSurfacePtrHolder(perigee.associatedSurface())
  , m_globalPosition(Amg::Vector3D(perigee.position()))
{
  if ((rvertex.position() - perigee.associatedSurface().center()).mag() > 10e-5)
    throw GaudiException(
      "Inconsistent input data, Perigee not expressed at vertex!",
      "Trk::VertexOnTrack",
      StatusCode::RECOVERABLE);
 
  // the local parameters are by definition at (0,0)
  Amg::Vector2D localPosition(0, 0);
  m_localParams = Trk::LocalParameters(localPosition);
 
  // transform Cartesian (x,y,z) to perigee (d0,z0)
  Amg::MatrixX jacobian(2, 3);
  jacobian.setZero();
  double ptInv = 1. / perigee.momentum().perp();
  jacobian(0, 0) = -ptInv * perigee.momentum().y();
  jacobian(0, 1) = ptInv * perigee.momentum().x();
  jacobian(1, 2) = 1.0;
  // the covariance on matrix of the vertex
  const Amg::MatrixX& vtxCov = rvertex.covariancePosition();
  // the local coordinate
  m_localCovariance = vtxCov.similarity(jacobian);
}

Member Function Documentation

associatedSurface()

const PerigeeSurface & Trk::VertexOnTrack::associatedSurface ( ) const

inlinefinaloverridevirtual

returns the surface for the local to global transformation

• interface from MeasurementBase

Implements Trk::MeasurementBase.

Definition at line 117 of file VertexOnTrack.h.

{
  return *m_associatedSurface;
}

clone()

VertexOnTrack * Trk::VertexOnTrack::clone ( ) const

inlinefinaloverridevirtual

Pseudo-constructor, needed to avoid excessive RTTI.

Implements Trk::MeasurementBase.

Definition at line 111 of file VertexOnTrack.h.

{
  return new VertexOnTrack(*this);
}

cloneHelper()

const PerigeeSurface * Trk::SurfacePtrHolderImpl< PerigeeSurface >::cloneHelper ( const PerigeeSurface * input )

inlinestaticinherited

Helper for cloning or not when we need depending on if the surface isFree.

Definition at line 124 of file SurfaceHolderImpl.h.

  {
    return (input && input->isFree() ? input->clone() : input);
  }

destroySurface()

void Trk::SurfacePtrHolderImpl< PerigeeSurface >::destroySurface ( )

inlinenoexceptinherited

destroySurface deletes the ptr if not null and the surface isFree Usefull also for testing

Definition at line 105 of file SurfaceHolderImpl.h.

  {
    if (m_associatedSurface && m_associatedSurface->isFree()) {
      delete m_associatedSurface;
    }
    //
    m_associatedSurface = nullptr;
  }

dump() [1/2]

MsgStream & Trk::VertexOnTrack::dump ( MsgStream & out ) const

finaloverridevirtual

returns the some information about this VertexOnTrack.

Implements Trk::MeasurementBase.

Definition at line 81 of file VertexOnTrack.cxx.

{
  std::string name(typeid(*this).name());
  sl << "Concrete dump method not implemented - using base class" << std::endl;
  sl << name << "\t  local position = " << this->localParameters() << std::endl;
  sl << name << "\t  global position ( " << this->globalPosition().x() << " , "
     << this->globalPosition().y() << " , " << this->globalPosition().z()
     << " ) " << std::endl;
  sl << name << "\t  has Error Matrix: " << std::endl;
  sl << this->localCovariance() << std::endl;
  sl << name << "\t  has associated surface:" << std::endl;
  sl << this->associatedSurface() << std::endl;
  return sl;
}

dump() [2/2]

std::ostream & Trk::VertexOnTrack::dump ( std::ostream & out ) const

finaloverridevirtual

returns the some information about this VertexOnTrack.

Implements Trk::MeasurementBase.

Definition at line 97 of file VertexOnTrack.cxx.

{
  std::string name(typeid(*this).name());
  sl << "Concrete dump method not implemented - using base class" << std::endl;
  sl << name << "\t  local position = " << this->localParameters() << std::endl;
  sl << name << "\t  global position ( " << this->globalPosition().x() << " , "
     << this->globalPosition().y() << " , " << this->globalPosition().z()
     << " ) " << std::endl;
  sl << name << "\t  has Error Matrix: " << std::endl;
  sl << this->localCovariance() << std::endl;
  sl << name << "\t  has associated surface:" << std::endl;
  sl << this->associatedSurface() << std::endl;
  return sl;
}

globalPosition()

const Amg::Vector3D & Trk::VertexOnTrack::globalPosition ( ) const

finaloverridevirtual

Interface method to get the global Position.

• interface from MeasurementBase

Implements Trk::MeasurementBase.

Definition at line 72 of file VertexOnTrack.cxx.

{
  if (m_globalPosition) {
    return *m_globalPosition;
  }
  return INVALID_VECTOR3D;
}

localCovariance()

const Amg::MatrixX & Trk::MeasurementBase::localCovariance ( ) const

inlineinherited

Interface method to get the localError.

Definition at line 138 of file MeasurementBase.h.

{
  return m_localCovariance;
}

localParameters()

const Trk::LocalParameters & Trk::MeasurementBase::localParameters ( ) const

inlineinherited

Interface method to get the LocalParameters.

Definition at line 132 of file MeasurementBase.h.

{
  return m_localParams;
}

operator=() [1/2]

VertexOnTrack & Trk::VertexOnTrack::operator= ( const VertexOnTrack & )

default

operator=() [2/2]

VertexOnTrack & Trk::VertexOnTrack::operator= ( VertexOnTrack && )

defaultnoexcept

release()

const PerigeeSurface * Trk::SurfacePtrHolderImpl< PerigeeSurface >::release ( )

inlinenoexceptinherited

release ala unique_ptr release

Definition at line 116 of file SurfaceHolderImpl.h.

  {
    const S* tmp = m_associatedSurface;
    m_associatedSurface = nullptr;
    return tmp;
  }

surfacePtr()

const PerigeeSurface * Trk::SurfacePtrHolderImpl< PerigeeSurface >::surfacePtr ( )

inlineinherited

return the ptr we hold useful for tests

Definition at line 114 of file SurfaceHolderImpl.h.

{ return m_associatedSurface; }

type()

virtual bool Trk::VertexOnTrack::type ( MeasurementBaseType::Type type ) const

inlinefinaloverridevirtual

Extended method checking the type.

Implements Trk::MeasurementBase.

Definition at line 93 of file VertexOnTrack.h.

  {
    return (type == MeasurementBaseType::VertexOnTrack);
  }

uniqueClone()

std::unique_ptr< VertexOnTrack > Trk::VertexOnTrack::uniqueClone ( ) const

inline

NVI clone returning unique_ptr.

Definition at line 79 of file VertexOnTrack.h.

  {
    return std::unique_ptr<VertexOnTrack>(clone());
  }

Friends And Related Symbol Documentation

::TrackCollectionCnv

friend class ::TrackCollectionCnv

friend

Definition at line 47 of file VertexOnTrack.h.

Member Data Documentation

m_associatedSurface

const PerigeeSurface* Trk::SurfacePtrHolderImpl< PerigeeSurface >::m_associatedSurface

protectedinherited

Definition at line 130 of file SurfaceHolderImpl.h.

m_globalPosition

std::optional<Amg::Vector3D> Trk::VertexOnTrack::m_globalPosition = std::nullopt

protected

Global position of the VoT.

Definition at line 107 of file VertexOnTrack.h.

m_localCovariance

Amg::MatrixX Trk::MeasurementBase::m_localCovariance

protectedinherited

Definition at line 112 of file MeasurementBase.h.

m_localParams

LocalParameters Trk::MeasurementBase::m_localParams

protectedinherited

Definition at line 111 of file MeasurementBase.h.

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The documentation for this class was generated from the following files:

• VertexOnTrack.h
• VertexOnTrack.cxx