Specialized CKF State for extrapolating into the SVD. More...

#include <CKFToSVDState.h>

Inheritance diagram for CKFToSVDState:

Public Types
using	Seed = RecoTrack
	Copy the class of the seed track.

using	Hit = SpacePoint
	Copy the class of the hits.

Public Member Functions
	CKFToSVDState (const SpacePoint *hit)
	When constructed by a hit, set the reco hit.

	CKFToSVDState (const RecoTrack *seed, bool reversed=false)
	Constructor setting the state to the position of the first CDC track seed hit.

unsigned int	getGeometricalLayer () const
	Extract the real layer this state sits on.

genfit::SharedPlanePtr	getPlane (const genfit::MeasuredStateOnPlane &state) const
	Return the plane of the first SVD cluster.

const SVDRecoHit &	getRecoHit () const
	Helper function for getting the already created reco hit (runtime reasons)

const std::vector< SVDRecoHit > &	getRecoHits () const
	Helper function for getting the already created reco hits (runtime reasons)

const RecoTrack *	getRelatedSVDTrack () const
	Return the related SVD track, if we go along one of them (or a nullptr)

void	setRelatedSVDTrack (const RecoTrack *relatedSVDTrack)
	Set the related SVD track, if we go along one of them (or a nullptr)

const struct stateCache &	getStateCache () const
	Get the cached data of this state.

const Seed *	getSeed () const
	Return the track this state is related to.

const Hit *	getHit () const
	Return the SP this state is related to. May be nullptr.

double	getChi2 () const
	Return the chi2 set during fitting. Is only valid after fitting.

void	setChi2 (double chi2)
	Set the chi2 of this state during fitting.

void	setMeasuredStateOnPlane (const genfit::MeasuredStateOnPlane &mSoP)
	Set the mSoP.

const genfit::MeasuredStateOnPlane &	getMeasuredStateOnPlane () const
	Get the mSoP if already set during extrapolation (or fitting)

bool	isFitted () const
	Check if state was already fitted.

bool	mSoPSet () const
	Is the mSoP already set? (= state was already extrapolated)

void	reset ()
	Reset the state to be seen as "new".

TrackFindingCDC::AutomatonCell &	getAutomatonCell ()
	Getter for the automaton cell.

Protected Attributes
stateCache	m_stateCache
	Cache the most important data of this state for better runtime performance.

Private Attributes
std::vector< SVDRecoHit >	m_recoHits
	Precache the PXDRecoHits for runtime performance reasons.

const RecoTrack *	m_relatedSVDTrack = nullptr
	The related SVD track, if we go along one of them (or a nullptr)

const Seed *	m_seed
	The seed this state is related with.

const Hit *	m_hit
	The hit object this state is attached to.

double	m_chi2
	Chi2 of this special state with this hit and this reco track. Will only be set after fitting state.

genfit::MeasuredStateOnPlane	m_measuredStateOnPlane
	MSoP after advancing. Is undetermined before extrapolating!

TrackFindingCDC::AutomatonCell	m_automatonCell
	Memory for the automaton cell.

bool	m_isFitted
	Flag, if this state was already fitted.

bool	m_hasMSoP
	Flag, if this state has a valid mSoP.

Detailed Description

Specialized CKF State for extrapolating into the SVD.

Definition at line 27 of file CKFToSVDState.h.

Member Typedef Documentation

◆ Hit

using Hit = SpacePoint

inherited

Copy the class of the hits.

Definition at line 34 of file CKFState.h.

◆ Seed

using Seed = RecoTrack

inherited

Copy the class of the seed track.

Definition at line 32 of file CKFState.h.

Constructor & Destructor Documentation

◆ CKFToSVDState() [1/2]

CKFToSVDState ( const SpacePoint * hit )

explicit

When constructed by a hit, set the reco hit.

Definition at line 60 of file CKFToSVDState.cc.

                                                  : CKFState<RecoTrack, SpacePoint>(hit)
{
  m_recoHits.reserve(2);
  for (const SVDCluster& svdCluster : hit->getRelationsTo<SVDCluster>()) {
    m_recoHits.emplace_back(&svdCluster);
  }
  m_stateCache.isHitState = true;
  m_stateCache.sensorID = hit->getVxdID();
  m_stateCache.geoLayer = this->getGeometricalLayer();
  m_stateCache.ladder = m_stateCache.sensorID.getLadderNumber();
  const VXD::SensorInfoBase& sensorInfo = VXD::GeoCache::getInstance().getSensorInfo(hit->getVxdID());
  m_stateCache.sensorCenterPhi = sensorInfo.pointToGlobal(ROOT::Math::XYZVector(0., 0., 0.), true).Phi();
  m_stateCache.phi = hit->getPosition().Phi();
  m_stateCache.theta = hit->getPosition().Theta();
  m_stateCache.localNormalizedu = hit->getNormalizedLocalU();
  m_stateCache.localNormalizedv = hit->getNormalizedLocalV();
}

◆ CKFToSVDState() [2/2]

CKFToSVDState	(	const RecoTrack *	seed,
		bool	reversed = `false`
	)

explicit

Constructor setting the state to the position of the first CDC track seed hit.

Definition at line 18 of file CKFToSVDState.cc.

                                                                 : CKFState(seed)
{
  if (reversed) {
    setMeasuredStateOnPlane(seed->getMeasuredStateOnPlaneFromLastHit());
  } else {
    setMeasuredStateOnPlane(seed->getMeasuredStateOnPlaneFromFirstHit());
  }
  m_stateCache.isHitState = false;
  m_stateCache.phi = this->getMeasuredStateOnPlane().getPos().Phi();
  m_stateCache.theta = this->getMeasuredStateOnPlane().getPos().Theta();
  m_stateCache.geoLayer = this->getGeometricalLayer();
}

Member Function Documentation

◆ getAutomatonCell()

TrackFindingCDC::AutomatonCell & getAutomatonCell ( )

inlineinherited

Getter for the automaton cell.

Definition at line 119 of file CKFState.h.

    {
      return m_automatonCell;
    }

◆ getChi2()

double getChi2 ( ) const

inlineinherited

Return the chi2 set during fitting. Is only valid after fitting.

Definition at line 72 of file CKFState.h.

    {
      B2ASSERT("Chi2 is not set", isFitted());
      return m_chi2;
    }

◆ getGeometricalLayer()

unsigned int getGeometricalLayer ( ) const

Extract the real layer this state sits on.

Definition at line 31 of file CKFToSVDState.cc.

{
  const SpacePoint* spacePoint = getHit();
  if (not spacePoint) {
    // return number of layer (6) + 1 -> we fake the 7th layer as the CDC
    return 7;
  }
 
  return spacePoint->getVxdID().getLayerNumber();
}

◆ getHit()

const Hit * getHit ( ) const

inlineinherited

Return the SP this state is related to. May be nullptr.

Definition at line 66 of file CKFState.h.

    {
      return m_hit;
    }

◆ getMeasuredStateOnPlane()

const genfit::MeasuredStateOnPlane & getMeasuredStateOnPlane ( ) const

inlineinherited

Get the mSoP if already set during extrapolation (or fitting)

Definition at line 93 of file CKFState.h.

    {
      B2ASSERT("You are asking for an invalid variable!", mSoPSet());
      return m_measuredStateOnPlane;
    }

◆ getPlane()

genfit::SharedPlanePtr getPlane ( const genfit::MeasuredStateOnPlane & state ) const

Return the plane of the first SVD cluster.

Definition at line 42 of file CKFToSVDState.cc.

{
  const SVDRecoHit& recoHit = getRecoHit();
  return recoHit.constructPlane(state);
}

◆ getRecoHit()

const SVDRecoHit & getRecoHit ( ) const

Helper function for getting the already created reco hit (runtime reasons)

Definition at line 48 of file CKFToSVDState.cc.

{
  B2ASSERT("You are asking for the reco hit, although no hit is present.", not m_recoHits.empty());
  return m_recoHits.front();
}

◆ getRecoHits()

const std::vector< SVDRecoHit > & getRecoHits ( ) const

Helper function for getting the already created reco hits (runtime reasons)

Definition at line 54 of file CKFToSVDState.cc.

{
  B2ASSERT("You are asking for reco hits, although no hit is present.", not m_recoHits.empty());
  return m_recoHits;
}

◆ getRelatedSVDTrack()

const RecoTrack * getRelatedSVDTrack ( ) const

Return the related SVD track, if we go along one of them (or a nullptr)

Definition at line 78 of file CKFToSVDState.cc.

{
  return m_relatedSVDTrack;
}

◆ getSeed()

const Seed * getSeed ( ) const

inlineinherited

Return the track this state is related to.

Definition at line 60 of file CKFState.h.

    {
      return m_seed;
    }

◆ getStateCache()

const struct stateCache & getStateCache ( ) const

inline

Get the cached data of this state.

Definition at line 54 of file CKFToSVDState.h.

                                                   {
      return m_stateCache;
    }

◆ isFitted()

bool isFitted ( ) const

inlineinherited

Check if state was already fitted.

Definition at line 100 of file CKFState.h.

    {
      return m_isFitted;
    }

◆ mSoPSet()

bool mSoPSet ( ) const

inlineinherited

Is the mSoP already set? (= state was already extrapolated)

Definition at line 106 of file CKFState.h.

    {
      return m_hasMSoP;
    }

◆ reset()

void reset ( )

inlineinherited

Reset the state to be seen as "new".

Definition at line 112 of file CKFState.h.

    {
      m_isFitted = false;
      m_hasMSoP = false;
    }

◆ setChi2()

void setChi2 ( double chi2 )

inlineinherited

Set the chi2 of this state during fitting.

Definition at line 79 of file CKFState.h.

    {
      m_chi2 = chi2;
      m_isFitted = true;
    }

◆ setMeasuredStateOnPlane()

void setMeasuredStateOnPlane ( const genfit::MeasuredStateOnPlane & mSoP )

inlineinherited

Set the mSoP.

Definition at line 86 of file CKFState.h.

    {
      m_measuredStateOnPlane = mSoP;
      m_hasMSoP = true;
    }

◆ setRelatedSVDTrack()

void setRelatedSVDTrack ( const RecoTrack * relatedSVDTrack )

Set the related SVD track, if we go along one of them (or a nullptr)

Definition at line 83 of file CKFToSVDState.cc.

{
  if (m_relatedSVDTrack and m_relatedSVDTrack != relatedSVDTrack) {
    B2FATAL("You are resetting the related track to a different value!");
  }
  m_relatedSVDTrack = relatedSVDTrack;
}

Member Data Documentation

◆ m_automatonCell

TrackFindingCDC::AutomatonCell m_automatonCell

privateinherited

Memory for the automaton cell.

Definition at line 167 of file CKFState.h.

◆ m_chi2

double m_chi2

privateinherited

Chi2 of this special state with this hit and this reco track. Will only be set after fitting state.

Definition at line 163 of file CKFState.h.

◆ m_hasMSoP

bool m_hasMSoP

privateinherited

Flag, if this state has a valid mSoP.

Definition at line 171 of file CKFState.h.

◆ m_hit

const Hit* m_hit

privateinherited

The hit object this state is attached to.

Definition at line 161 of file CKFState.h.

◆ m_isFitted

bool m_isFitted

privateinherited

Flag, if this state was already fitted.

Definition at line 169 of file CKFState.h.

◆ m_measuredStateOnPlane

genfit::MeasuredStateOnPlane m_measuredStateOnPlane

privateinherited

MSoP after advancing. Is undetermined before extrapolating!

Definition at line 165 of file CKFState.h.

◆ m_recoHits

std::vector<SVDRecoHit> m_recoHits

private

Precache the PXDRecoHits for runtime performance reasons.

Definition at line 60 of file CKFToSVDState.h.

◆ m_relatedSVDTrack

const RecoTrack* m_relatedSVDTrack = nullptr

private

The related SVD track, if we go along one of them (or a nullptr)

Definition at line 63 of file CKFToSVDState.h.

◆ m_seed

const Seed* m_seed

privateinherited

The seed this state is related with.

Definition at line 159 of file CKFState.h.

◆ m_stateCache

stateCache m_stateCache

protectedinherited

Cache the most important data of this state for better runtime performance.

Definition at line 154 of file CKFState.h.

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

tracking/ckf/svd/entities/include/CKFToSVDState.h
tracking/ckf/svd/entities/src/CKFToSVDState.cc

Public Types

Public Member Functions

Protected Attributes

Private Attributes

Detailed Description

Member Typedef Documentation

◆ Hit

◆ Seed

Constructor & Destructor Documentation

◆ CKFToSVDState() [1/2]

◆ CKFToSVDState() [2/2]

Member Function Documentation

◆ getAutomatonCell()

◆ getChi2()

◆ getGeometricalLayer()

◆ getHit()

◆ getMeasuredStateOnPlane()

◆ getPlane()

◆ getRecoHit()

◆ getRecoHits()

◆ getRelatedSVDTrack()

◆ getSeed()

◆ getStateCache()

◆ isFitted()

◆ mSoPSet()

◆ reset()

◆ setChi2()

◆ setMeasuredStateOnPlane()

◆ setRelatedSVDTrack()

Member Data Documentation

◆ m_automatonCell

◆ m_chi2

◆ m_hasMSoP

◆ m_hit

◆ m_isFitted

◆ m_measuredStateOnPlane

◆ m_recoHits

◆ m_relatedSVDTrack

◆ m_seed

◆ m_stateCache