Generates axial tracks from hit using special leaf postprocessing. More...

#include <AxialTrackFinderLegendre.h>

Inheritance diagram for AxialTrackFinderLegendre:

Public Types
using	IOTypes = std::tuple< AIOTypes... >
	Types that should be served to apply on invocation.

using	IOVectors = std::tuple< std::vector< AIOTypes >... >
	Vector types that should be served to apply on invocation.

Public Member Functions
	AxialTrackFinderLegendre ()
	Constructor.

std::string	getDescription () final
	Short description of the findlet.

void	exposeParameters (ModuleParamList *moduleParamList, const std::string &prefix) final
	Expose the parameters to a module.

void	apply (const std::vector< CDCWireHit > &wireHits, std::vector< CDCTrack > &tracks)
	Main method to apply the track finding.

virtual void	apply (ToVector< AIOTypes > &... ioVectors)=0
	Main function executing the algorithm.

void	initialize () override
	Receive and dispatch signal before the start of the event processing.

void	beginRun () override
	Receive and dispatch signal for the beginning of a new run.

void	beginEvent () override
	Receive and dispatch signal for the start of a new event.

void	endRun () override
	Receive and dispatch signal for the end of the run.

void	terminate () override
	Receive and dispatch Signal for termination of the event processing.

Protected Types
using	ToVector = typename ToVectorImpl< T >::Type
	Short hand for ToRangeImpl.

Protected Member Functions
void	addProcessingSignalListener (ProcessingSignalListener *psl)
	Register a processing signal listener to be notified.

int	getNProcessingSignalListener ()
	Get the number of currently registered listeners.

Private Types
using	Super = Findlet< const CDCWireHit, CDCTrack >
	Type of the base class.

using	EPass = AxialTrackCreatorHitLegendre::EPass
	Class of Pass keys.

Private Attributes
AxialTrackCreatorHitLegendre	m_nonCurlerAxialTrackCreatorHitLegendre {EPass::NonCurlers}
	Findlet for the non-curler legendre pass.

AxialTrackCreatorHitLegendre	m_nonCurlersWithIncreasingThresholdAxialTrackCreatorHitLegendre
	Findlet for the non-curler with increased threshold legendre pass.

AxialTrackCreatorHitLegendre	m_fullRangeAxialTrackCreatorHitLegendre {EPass::FullRange}
	Findlet for the full range legendre pass.

AxialTrackHitMigrator	m_axialTrackHitMigrator
	Findlet to exchange hits between tracks based on their proximity to the respective trajectory.

AxialTrackMerger	m_axialTrackMerger
	Findlet to merge the tracks after the legendre finder.

std::vector< ProcessingSignalListener * >	m_subordinaryProcessingSignalListeners
	References to subordinary signal processing listener contained in this findlet.

bool	m_initialized = false
	Flag to keep track whether initialization happened before.

bool	m_terminated = false
	Flag to keep track whether termination happened before.

std::string	m_initializedAs
	Name of the type during initialisation.

Detailed Description

Generates axial tracks from hit using special leaf postprocessing.

Implements Legendre transformation of the drift time circles. This is a module, performing tracking in the CDC. It is based on the paper "Implementation of the Legendre Transform for track segment reconstruction in drift tube chambers" by T. Alexopoulus, et al. NIM A592 456-462 (2008).

Definition at line 39 of file AxialTrackFinderLegendre.h.

Member Typedef Documentation

◆ EPass

using EPass = AxialTrackCreatorHitLegendre::EPass

private

Class of Pass keys.

Definition at line 60 of file AxialTrackFinderLegendre.h.

◆ IOTypes

using IOTypes = std::tuple<AIOTypes...>

inherited

Types that should be served to apply on invocation.

Definition at line 30 of file Findlet.h.

◆ IOVectors

using IOVectors = std::tuple< std::vector<AIOTypes>... >

inherited

Vector types that should be served to apply on invocation.

Definition at line 53 of file Findlet.h.

◆ Super

using Super = Findlet<const CDCWireHit, CDCTrack>

private

Type of the base class.

Definition at line 43 of file AxialTrackFinderLegendre.h.

◆ ToVector

using ToVector = typename ToVectorImpl<T>::Type

protectedinherited

Short hand for ToRangeImpl.

Definition at line 49 of file Findlet.h.

Constructor & Destructor Documentation

◆ AxialTrackFinderLegendre()

AxialTrackFinderLegendre ( )

Constructor.

Definition at line 20 of file AxialTrackFinderLegendre.cc.

{
  addProcessingSignalListener(&m_nonCurlerAxialTrackCreatorHitLegendre);
  addProcessingSignalListener(&m_nonCurlersWithIncreasingThresholdAxialTrackCreatorHitLegendre);
  addProcessingSignalListener(&m_fullRangeAxialTrackCreatorHitLegendre);
  addProcessingSignalListener(&m_axialTrackHitMigrator);
  addProcessingSignalListener(&m_axialTrackMerger);
}

Member Function Documentation

◆ addProcessingSignalListener()

void addProcessingSignalListener ( ProcessingSignalListener * psl )

protectedinherited

Register a processing signal listener to be notified.

Definition at line 55 of file CompositeProcessingSignalListener.cc.

{
  m_subordinaryProcessingSignalListeners.push_back(psl);
}

◆ apply()

void apply	(	const std::vector< CDCWireHit > &	wireHits,
		std::vector< CDCTrack > &	tracks
	)

Main method to apply the track finding.

Definition at line 42 of file AxialTrackFinderLegendre.cc.

{
  B2DEBUG(25, "**********   CDCTrackingModule  ************");
 
  // Acquire the axial hits
  std::vector<const CDCWireHit*> axialWireHits;
  axialWireHits.reserve(wireHits.size());
  for (const CDCWireHit& wireHit : wireHits) {
    wireHit->unsetTemporaryFlags();
    wireHit->unsetMaskedFlag();
    if (not wireHit.isAxial()) continue;
    if (wireHit->hasBackgroundFlag()) continue;
    axialWireHits.emplace_back(&wireHit);
  }
 
  // First Legendre pass
  m_nonCurlerAxialTrackCreatorHitLegendre.apply(axialWireHits, tracks);
 
  // Assign new hits to the tracks
  m_axialTrackHitMigrator.apply(axialWireHits, tracks);
 
  // Second Legendre pass
  m_nonCurlersWithIncreasingThresholdAxialTrackCreatorHitLegendre.apply(axialWireHits, tracks);
 
  // Assign new hits to the tracks
  m_axialTrackHitMigrator.apply(axialWireHits, tracks);
 
  // Iterate the last finding pass until no track is found anymore
 
  // Loop counter to guard against infinite loop
  for (int iPass = 0; iPass < 20; ++iPass) {
    int nCandsAdded = tracks.size();
 
    // Third Legendre pass
    m_fullRangeAxialTrackCreatorHitLegendre.apply(axialWireHits, tracks);
 
    // Assign new hits to the tracks
    m_axialTrackHitMigrator.apply(axialWireHits, tracks);
 
    nCandsAdded = tracks.size() - nCandsAdded;
 
    if (iPass == 19) B2WARNING("Reached maximal number of Legendre search passes");
    if (nCandsAdded == 0) break;
  }
 
  // Merge found tracks
  m_axialTrackMerger.apply(tracks, axialWireHits);
 
  // Assign new hits to the tracks
  m_axialTrackHitMigrator.apply(axialWireHits, tracks);
 
  AxialTrackUtil::deleteShortTracks(tracks);
}

◆ beginEvent()

void beginEvent ( )

overridevirtualinherited

Receive and dispatch signal for the start of a new event.

Reimplemented from ProcessingSignalListener.

Definition at line 31 of file CompositeProcessingSignalListener.cc.

{
  Super::beginEvent();
  for (ProcessingSignalListener* psl : m_subordinaryProcessingSignalListeners) {
    psl->beginEvent();
  }
}

◆ beginRun()

void beginRun ( )

overridevirtualinherited

Receive and dispatch signal for the beginning of a new run.

Reimplemented from ProcessingSignalListener.

Reimplemented in LayerRelationFilter< AFilter >, FourHitFilter, QualityIndicatorFilter, ThreeHitFilter, TwoHitVirtualIPFilter, TwoHitVirtualIPQIFilter, RecoTrackStorer, ROIFinder, SpacePointLoaderAndPreparer, and TrackCandidateResultRefiner.

Definition at line 23 of file CompositeProcessingSignalListener.cc.

{
  Super::beginRun();
  for (ProcessingSignalListener* psl : m_subordinaryProcessingSignalListeners) {
    psl->beginRun();
  }
}

◆ endRun()

void endRun ( )

overridevirtualinherited

Receive and dispatch signal for the end of the run.

Reimplemented from ProcessingSignalListener.

Definition at line 39 of file CompositeProcessingSignalListener.cc.

{
  for (ProcessingSignalListener* psl : reversedRange(m_subordinaryProcessingSignalListeners)) {
    psl->endRun();
  }
  Super::endRun();
}

◆ exposeParameters()

void exposeParameters	(	ModuleParamList *	moduleParamList,
		const std::string &	prefix
	)

finalvirtual

Expose the parameters to a module.

Reimplemented from Findlet< const CDCWireHit, CDCTrack >.

Definition at line 34 of file AxialTrackFinderLegendre.cc.

{
  m_axialTrackHitMigrator.exposeParameters(moduleParamList, prefix);
  m_axialTrackMerger.exposeParameters(moduleParamList, prefixed("merge", prefix));
  // No parameters exposed for the Legendre passes
}

◆ getDescription()

std::string getDescription ( )

finalvirtual

Short description of the findlet.

Reimplemented from Findlet< const CDCWireHit, CDCTrack >.

Definition at line 29 of file AxialTrackFinderLegendre.cc.

{
  return "Performs the pattern recognition in the CDC with the Legendre hough finder";
}

◆ getNProcessingSignalListener()

int getNProcessingSignalListener ( )

protectedinherited

Get the number of currently registered listeners.

Definition at line 60 of file CompositeProcessingSignalListener.cc.

{
  return m_subordinaryProcessingSignalListeners.size();
}

◆ initialize()

void initialize ( )

overridevirtualinherited

Receive and dispatch signal before the start of the event processing.

Reimplemented from ProcessingSignalListener.

Definition at line 15 of file CompositeProcessingSignalListener.cc.

{
  Super::initialize();
  for (ProcessingSignalListener* psl : m_subordinaryProcessingSignalListeners) {
    psl->initialize();
  }
}

◆ terminate()

void terminate ( )

overridevirtualinherited

Receive and dispatch Signal for termination of the event processing.

Reimplemented from ProcessingSignalListener.

Reimplemented in StereoHitTrackQuadTreeMatcher< Belle2::TrackFindingCDC::HyperHough >, StereoHitTrackQuadTreeMatcher< Belle2::TrackFindingCDC::QuadraticLegendre >, and StereoHitTrackQuadTreeMatcher< Belle2::TrackFindingCDC::Z0TanLambdaLegendre >.

Definition at line 47 of file CompositeProcessingSignalListener.cc.

{
  for (ProcessingSignalListener* psl : reversedRange(m_subordinaryProcessingSignalListeners)) {
    psl->terminate();
  }
  Super::terminate();
}

Member Data Documentation

◆ m_axialTrackHitMigrator

AxialTrackHitMigrator m_axialTrackHitMigrator

private

Findlet to exchange hits between tracks based on their proximity to the respective trajectory.

Definition at line 73 of file AxialTrackFinderLegendre.h.

◆ m_axialTrackMerger

AxialTrackMerger m_axialTrackMerger

private

Findlet to merge the tracks after the legendre finder.

Definition at line 76 of file AxialTrackFinderLegendre.h.

◆ m_fullRangeAxialTrackCreatorHitLegendre

AxialTrackCreatorHitLegendre m_fullRangeAxialTrackCreatorHitLegendre {EPass::FullRange}

private

Findlet for the full range legendre pass.

Definition at line 70 of file AxialTrackFinderLegendre.h.

◆ m_initialized

bool m_initialized = false

privateinherited

Flag to keep track whether initialization happened before.

Definition at line 52 of file ProcessingSignalListener.h.

◆ m_initializedAs

std::string m_initializedAs

privateinherited

Name of the type during initialisation.

Definition at line 58 of file ProcessingSignalListener.h.

◆ m_nonCurlerAxialTrackCreatorHitLegendre

AxialTrackCreatorHitLegendre m_nonCurlerAxialTrackCreatorHitLegendre {EPass::NonCurlers}

private

Findlet for the non-curler legendre pass.

Definition at line 63 of file AxialTrackFinderLegendre.h.

◆ m_nonCurlersWithIncreasingThresholdAxialTrackCreatorHitLegendre

AxialTrackCreatorHitLegendre m_nonCurlersWithIncreasingThresholdAxialTrackCreatorHitLegendre

private

Initial value:

{

EPass::NonCurlersWithIncreasingThreshold}

Findlet for the non-curler with increased threshold legendre pass.

Definition at line 66 of file AxialTrackFinderLegendre.h.

◆ m_subordinaryProcessingSignalListeners

std::vector<ProcessingSignalListener*> m_subordinaryProcessingSignalListeners

privateinherited

References to subordinary signal processing listener contained in this findlet.

Definition at line 52 of file CompositeProcessingSignalListener.h.

◆ m_terminated

bool m_terminated = false

privateinherited

Flag to keep track whether termination happened before.

Definition at line 55 of file ProcessingSignalListener.h.

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

tracking/trackFindingCDC/findlets/combined/include/AxialTrackFinderLegendre.h
tracking/trackFindingCDC/findlets/combined/src/AxialTrackFinderLegendre.cc

Public Types

Public Member Functions

Protected Types

Protected Member Functions

Private Types

Private Attributes

Detailed Description

Member Typedef Documentation

◆ EPass

◆ IOTypes

◆ IOVectors

◆ Super

◆ ToVector

Constructor & Destructor Documentation

◆ AxialTrackFinderLegendre()

Member Function Documentation

◆ addProcessingSignalListener()

◆ apply()

◆ beginEvent()

◆ beginRun()

◆ endRun()

◆ exposeParameters()

◆ getDescription()

◆ getNProcessingSignalListener()

◆ initialize()

◆ terminate()

Member Data Documentation

◆ m_axialTrackHitMigrator

◆ m_axialTrackMerger

◆ m_fullRangeAxialTrackCreatorHitLegendre

◆ m_initialized

◆ m_initializedAs

◆ m_nonCurlerAxialTrackCreatorHitLegendre

◆ m_nonCurlersWithIncreasingThresholdAxialTrackCreatorHitLegendre

◆ m_subordinaryProcessingSignalListeners

◆ m_terminated