#include <FourHitFilter.h>

Inheritance diagram for FourHitFilter:

Public Types
using	Object
	Type of the object to be analysed.

using	Interface
	Mark this class as the basic interface.

Public Member Functions
TrackFindingCDC::Weight	operator() (const BasePathFilter::Object &pair) override
	Return the weight based on the ThreeHitVariables.

void	exposeParameters (ModuleParamList *moduleParamList, const std::string &prefix) override
	Expose the parameters.

void	beginRun () override
	set BField value for estimator

virtual bool	needsTruthInformation ()
	Indicates if the filter requires Monte Carlo information.

virtual bool	needsTruthInformation ()
	Indicates if the filter requires Monte Carlo information.

virtual Weight	operator() (const Object &obj)
	Function to evaluate the object.

Weight	operator() (const Object *obj)
	Function to evaluate the object.

virtual std::vector< float >	operator() (const std::vector< Object * > &objs)
	Function to evaluate a vector of objects Base implementation applies the function to each object.

virtual Weight	operator() (const Object &obj)
	Function to evaluate the object.

Weight	operator() (const Object *obj)
	Function to evaluate the object.

virtual std::vector< float >	operator() (const std::vector< Object * > &objs)
	Function to evaluate a vector of objects Base implementation applies the function to each object.

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

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 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
	Type of the base class.

Private Attributes
FourHitVariables	m_fourHitVariables
	Construct empty ThreeHitVariables instance.

double	m_CircleRadiusDifferenceCut = 10.
	Cut on difference of the two circle radii estimated from two triplets.

double	m_CircleCenterPositionDifferenceCut = 10.
	Cut on difference of the two circle center estimated from two triplets.

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

bool	m_initialized
	Flag to keep track whether initialization happened before.

bool	m_terminated
	Flag to keep track whether termination happened before.

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

Detailed Description

Filter for four hits.

Basic working principle: use FourHitVariables and ThreeHitVariables and provide four (three B2Vector3D) to each variable. These are oHit (outer hit), coHit (middle outer hit), ciHit (middle inner hit) and iHit (inner hit) and then calculate the variables specified in FourHitVariables and ThreeHitVariables for the four positions

Definition at line 25 of file FourHitFilter.h.

Member Typedef Documentation

◆ Interface

using Interface

inherited

Mark this class as the basic interface.

Definition at line 38 of file Filter.dcl.h.

◆ Object

using Object

inherited

Type of the object to be analysed.

Definition at line 35 of file Filter.dcl.h.

◆ Super

using Super

privateinherited

Type of the base class.

Definition at line 26 of file CompositeProcessingSignalListener.h.

Member Function Documentation

◆ addProcessingSignalListener()

void addProcessingSignalListener ( ProcessingSignalListener * psl )

protectedinherited

Register a processing signal listener to be notified.

Definition at line 53 of file CompositeProcessingSignalListener.cc.

56{

57 m_subordinaryProcessingSignalListeners.push_back(psl);

58}

Belle2::TrackFindingCDC::Filter

Base class for filters on a generic object type.

Definition Filter.dcl.h:31

◆ beginEvent()

void beginEvent ( )

overrideinherited

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

Definition at line 36 of file CompositeProcessingSignalListener.cc.

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

◆ beginRun()

void beginRun ( )

overridevirtual

set BField value for estimator

Reimplemented from CompositeProcessingSignalListener.

Definition at line 30 of file FourHitFilter.cc.

31{

32 const double bFieldZ = BFieldManager::getField(0, 0, 0).Z() / Unit::T;

33 m_fourHitVariables.setBFieldZ(bFieldZ);

34}

Belle2::Unit::T

static const double T

[tesla]

Definition Unit.h:120

Belle2::vxdHoughTracking::FourHitFilter::m_fourHitVariables

FourHitVariables m_fourHitVariables

Construct empty ThreeHitVariables instance.

Definition FourHitFilter.h:40

Belle2::BFieldManager::getField

static void getField(const double *pos, double *field)

return the magnetic field at a given position.

Definition BFieldManager.h:90

◆ endRun()

void endRun ( )

overrideinherited

Receive and dispatch signal for the end of the run.

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 )

overridevirtual

Expose the parameters.

Reimplemented from CompositeProcessingSignalListener.

Definition at line 18 of file FourHitFilter.cc.

{
  moduleParamList->addParameter(TrackFindingCDC::prefixed(prefix, "circleRadiusDifferenceCut"), m_CircleRadiusDifferenceCut,
                                "Cut on the difference of the radii of the two circles that can be defined by two hit triplets.",
                                m_CircleRadiusDifferenceCut);
 
  moduleParamList->addParameter(TrackFindingCDC::prefixed(prefix, "circleCenterPositionDifferenceCut"),
                                m_CircleCenterPositionDifferenceCut,
                                "Cut on the difference between the center positions of the two circles that can be defined by two hit triplets.",
                                m_CircleCenterPositionDifferenceCut);
}

◆ getNProcessingSignalListener()

int getNProcessingSignalListener ( )

protectedinherited

Get the number of currently registered listeners.

Definition at line 56 of file CompositeProcessingSignalListener.cc.

61{

62 return m_subordinaryProcessingSignalListeners.size();

63}

◆ initialize()

void initialize ( )

overrideinherited

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

Definition at line 30 of file CompositeProcessingSignalListener.cc.

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

◆ needsTruthInformation()

bool needsTruthInformation ( )

virtualinherited

Indicates if the filter requires Monte Carlo information.

Definition at line 48 of file Filter.icc.h.

41 {

42 return false;

43 }

◆ operator()() [1/7]

virtual Weight operator() ( const Object & obj )

virtualinherited

Function to evaluate the object.

Base implementation accepts all objects.

Parameters

obj	The object to be accepted or rejected.

Returns: A finite float value if the object is accepted. NAN if the object is rejected.

◆ operator()() [2/7]

Weight operator() ( const Object & obj )

virtualinherited

Function to evaluate the object.

Base implementation accepts all objects.

Parameters

obj	The object to be accepted or rejected.

Returns: A finite float value if the object is accepted. NAN if the object is rejected.

Definition at line 59 of file Filter.icc.h.

47 {

48 return 1;

49 }

◆ operator()() [3/7]

Weight operator() ( const Object * obj )

inherited

Function to evaluate the object.

Base implementation accepts all objects, except nullptr.

Parameters

obj	The object to be accepted or rejected.

Returns: A finit float value if the object is accepted. NAN if the object is rejected. Nullptr is always rejected.

◆ operator()() [4/7]

Weight operator() ( const Object * obj )

inherited

Function to evaluate the object.

Base implementation accepts all objects, except nullptr.

Parameters

obj	The object to be accepted or rejected.

Returns: A finit float value if the object is accepted. NAN if the object is rejected. Nullptr is always rejected.

Definition at line 69 of file Filter.icc.h.

53 {

54 return obj ? operator()(*obj) : NAN;

55 }

◆ operator()() [5/7]

virtual std::vector< float > operator() ( const std::vector< Object * > & objs )

virtualinherited

Function to evaluate a vector of objects Base implementation applies the function to each object.

Can be optimized for MVA filters

Parameters

objs	A vector of pointers to objects

Returns: A vector of float or NAN values. See above

◆ operator()() [6/7]

std::vector< float > operator() ( const std::vector< Object * > & objs )

virtualinherited

Function to evaluate a vector of objects Base implementation applies the function to each object.

Can be optimized for MVA filters

Parameters

objs	A vector of pointers to objects

Returns: A vector of float or NAN values. See above

Definition at line 77 of file Filter.icc.h.

    {
      std::vector<float> out;
      for (const auto& obj : objs) {
        out.push_back(operator()(obj));
      }
      return out;
    }

◆ operator()() [7/7]

TrackFindingCDC::Weight operator() ( const BasePathFilter::Object & pair )

override

Return the weight based on the ThreeHitVariables.

Returns NAN if m_fourHitVariables.getCircleRadiusDifference() of the hit triplet is larger than m_CircleRadiusDifferenceCut Returns NAN if m_fourHitVariables.getCircleCenterPositionDifference() of the hit triplet is larger than m_CircleCenterPositionDifferenceCut Returns 1/m_fourHitVariables.getCircleRadiusDifference() else

Definition at line 37 of file FourHitFilter.cc.

{
  const std::vector<TrackFindingCDC::WithWeight<const VXDHoughState*>>& previousHits = pair.first;
 
  // Do nothing if path is too short or too long
  if (previousHits.size() != 3) {
    return NAN;
  }
 
  const B2Vector3D& firstHitPos   = previousHits.at(0)->getHit()->getPosition();
  const B2Vector3D& secondHitPos  = previousHits.at(1)->getHit()->getPosition();
  const B2Vector3D& thirdHitPos   = previousHits.at(2)->getHit()->getPosition();
  const B2Vector3D& currentHitPos = pair.second->getHit()->getPosition();
 
  m_fourHitVariables.setHits(firstHitPos, secondHitPos, thirdHitPos, currentHitPos);
 
  if (m_fourHitVariables.getCircleRadiusDifference() > m_CircleRadiusDifferenceCut) {
    return NAN;
  }
  if (m_fourHitVariables.getCircleCenterPositionDifference() > m_CircleCenterPositionDifferenceCut) {
    return NAN;
  }
 
  return fabs(1.0 / m_fourHitVariables.getCircleRadiusDifference());
}

◆ terminate()

void terminate ( )

overrideinherited

Receive and dispatch Signal for termination of the event processing.

Definition at line 42 of file CompositeProcessingSignalListener.cc.

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

Member Data Documentation

◆ m_CircleCenterPositionDifferenceCut

double m_CircleCenterPositionDifferenceCut = 10.

private

Cut on difference of the two circle center estimated from two triplets.

Definition at line 45 of file FourHitFilter.h.

◆ m_CircleRadiusDifferenceCut

double m_CircleRadiusDifferenceCut = 10.

private

Cut on difference of the two circle radii estimated from two triplets.

Definition at line 43 of file FourHitFilter.h.

◆ m_fourHitVariables

FourHitVariables m_fourHitVariables

private

Construct empty ThreeHitVariables instance.

Definition at line 40 of file FourHitFilter.h.

◆ m_initialized

bool m_initialized

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_subordinaryProcessingSignalListeners

std::vector<ProcessingSignalListener*> m_subordinaryProcessingSignalListeners

privateinherited

References to subordinary signal processing listener contained in this findlet.

Definition at line 60 of file CompositeProcessingSignalListener.h.

◆ m_terminated

bool m_terminated

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/vxdHoughTracking/filters/pathFilters/include/FourHitFilter.h
tracking/vxdHoughTracking/filters/pathFilters/src/FourHitFilter.cc

Public Types

Public Member Functions

Protected Member Functions

Private Types

Private Attributes

Detailed Description

Member Typedef Documentation

◆ Interface

◆ Object

◆ Super

Member Function Documentation

◆ addProcessingSignalListener()

◆ beginEvent()

◆ beginRun()

◆ endRun()

◆ exposeParameters()

◆ getNProcessingSignalListener()

◆ initialize()

◆ needsTruthInformation()

◆ operator()() [1/7]

◆ operator()() [2/7]

◆ operator()() [3/7]

◆ operator()() [4/7]

◆ operator()() [5/7]

◆ operator()() [6/7]

◆ operator()() [7/7]

◆ terminate()

Member Data Documentation

◆ m_CircleCenterPositionDifferenceCut

◆ m_CircleRadiusDifferenceCut

◆ m_fourHitVariables

◆ m_initialized

◆ m_initializedAs

◆ m_subordinaryProcessingSignalListeners

◆ m_terminated