Row based segment. More...

#include <RowTripletBasedTrackFinderProcessor.h>

Public Member Functions
	rb_Segment (double, trpListType)
	Construct row based segment from (unused hits of) triplets. More...

	rb_Segment (double, hitListType, unsigned int=1)
	Construct row based segment from (unused) hits in list. More...

	rb_Segment (std::vector< rb_Segment *> segments)

double	getBzc () const
	Get Bz*c. More...

int	getFirstRow () const
	Get first row number. More...

int	getLastRow () const
	Get first last number. More...

void	getRefPoint (double *) const
	Get reference point. More...

int	getNdf () const
	Get number of degrees of freedom (of segment fit). More...

double	getChi2 () const
	Get chi2 from segment fit. More...

void	getPar (double *) const
	Get (all five helix) parameters from segment fit. More...

const hitListType &	getHitList () const
	Get list of hits. More...

const TVectorD &	getPar () const
	Get parameter vector. More...

const TMatrixDSym &	getCov () const
	Get covariance matrix. More...

bool	match (rb_Segment *, const double, const int) const
	Match segment with other segment. More...

bool	match (rb_Hit *, const double) const
	Match segment with unused hit. More...

void	match (hitListType &, hitListType &, const double) const
	Match segment with (list of) unused hits. More...

void	getLCIOStateAtRefPoint (const double *, TVectorD &, TMatrixDSym &) const
	Get segment state at reference point. More...

void	fillRowMap (std::map< int, int > &) const
	Fill row map. More...

int	getId () const
	Get segment ID. More...

void	setId (int)
	Set segment ID. More...

void	addHit (rb_Hit *)
	Add (unused) hit to segment. More...

Private Member Functions
void	calcRefPoint ()
	Calculate reference point (from first and last hit). More...

void	fitSegment (double)
	Fit segment from hits. More...

Private Attributes
int	_segId
	segment ID More...

hitListType	_hitList
	pointers to hits More...

double	_bzc
	magnetic field strength (Bz*c) More...

double	_refX
	X of reference point. More...

double	_refY
	Y of reference point. More...

double	_refZ
	Z of reference point. More...

int	_npar
	number of parameters (5: helix, 4: line) More...

int	_ndf
	number of degrees of freedom of segment fit More...

double	_chi2
	chi2 from segment fit More...

TVectorD	_parameters
	parameter vector More...

TMatrixDSym	_covariance
	covariance matrix More...

Detailed Description

Row based segment.

Is build from (the unused hits) of matching triplets (from equivalence classes) and fitted in XY and ZS (or from other matching segments).

Definition at line 249 of file RowTripletBasedTrackFinderProcessor.h.

Constructor & Destructor Documentation

◆ rb_Segment() [1/3]

marlintpc::rb_Segment::rb_Segment	(	double	Bzc,
		trpListType	triplets
	)

Construct row based segment from (unused hits of) triplets.

Build and fit segments. Corresponding hits are flagged as used.

Parameters

[in]	Bzc	Bz*c
[in]	triplets	list of triplets

Definition at line 890 of file RowTripletBasedTrackFinderProcessor.cc.

References _hitList, fitSegment(), marlintpc::rb_Hit::getRow(), marlintpc::rb_Hit::getUsed(), and marlintpc::rb_Hit::setUsed().

Referenced by rb_Segment().

◆ rb_Segment() [2/3]

marlintpc::rb_Segment::rb_Segment	(	double	Bzc,
		hitListType	hits,
		unsigned int	maxHitsPerRow = `1`
	)

Construct row based segment from (unused) hits in list.

Build and fit segments. Corresponding hits are flagged as used.

Parameters

[in]	Bzc	Bz*c
[in]	hits	list of hits
[in]	maxHitsPerRow	maximum number of hits per row

Definition at line 918 of file RowTripletBasedTrackFinderProcessor.cc.

References _bzc, _chi2, _covariance, _hitList, _ndf, _npar, _parameters, _refX, _refY, _refZ, _segId, calcRefPoint(), fitSegment(), marlintpc::rb_Hit::getRow(), marlintpc::simpleHelix::getStateAt(), marlintpc::rb_Hit::getUsed(), rb_Segment(), and marlintpc::rb_Hit::setUsed().

◆ rb_Segment() [3/3]

marlintpc::rb_Segment::rb_Segment ( std::vector< rb_Segment *> segments )

Member Function Documentation

◆ addHit()

void marlintpc::rb_Segment::addHit ( rb_Hit * hit )

Add (unused) hit to segment.

Keeping row based ordering of hits. Hit is flagged as used.

Parameters

hit	hit to add

Definition at line 1308 of file RowTripletBasedTrackFinderProcessor.cc.

References _hitList, marlintpc::rb_Hit::getRow(), and marlintpc::rb_Hit::setUsed().

Referenced by marlintpc::RowBasedFastHoughTransformationProcessor::processEvent().

◆ calcRefPoint()

void marlintpc::rb_Segment::calcRefPoint ( )

private

Calculate reference point (from first and last hit).

Definition at line 1209 of file RowTripletBasedTrackFinderProcessor.cc.

References _hitList, _refX, _refY, and _refZ.

Referenced by fitSegment(), and rb_Segment().

◆ fillRowMap()

void marlintpc::rb_Segment::fillRowMap ( std::map< int, int > & rowMap ) const

Fill row map.

Parameters

[in,out] rowMap row map

Definition at line 1297 of file RowTripletBasedTrackFinderProcessor.cc.

References _hitList.

Referenced by marlintpc::RowBasedFastHoughTransformationProcessor::processEvent().

◆ fitSegment()

void marlintpc::rb_Segment::fitSegment ( double Bzc )

private

Fit segment from hits.

Definition at line 1219 of file RowTripletBasedTrackFinderProcessor.cc.

References _chi2, _covariance, _hitList, _ndf, _npar, _parameters, _refX, _refY, _refZ, marlintpc::simpleFitXY::addPoint(), marlintpc::simpleFitZS::addPoint(), calcRefPoint(), marlintpc::simpleFitXY::fit(), marlintpc::simpleFitZS::fit(), marlintpc::simpleHelix::getArcLengthXY(), marlintpc::simpleFitXY::getCov(), marlintpc::simpleFitZS::getCov(), marlintpc::simpleFitXY::getPar(), and marlintpc::simpleFitZS::getPar().

Referenced by rb_Segment().

◆ getBzc()

double marlintpc::rb_Segment::getBzc ( ) const

Get Bz*c.

Definition at line 1019 of file RowTripletBasedTrackFinderProcessor.cc.

References _bzc.

◆ getChi2()

double marlintpc::rb_Segment::getChi2 ( ) const

Get chi2 from segment fit.

Definition at line 1049 of file RowTripletBasedTrackFinderProcessor.cc.

References _chi2.

Referenced by marlintpc::RowBasedPadPulseRoadSearchProcessor::processEvent().

◆ getCov()

const TMatrixDSym & marlintpc::rb_Segment::getCov ( ) const

Get covariance matrix.

Definition at line 1074 of file RowTripletBasedTrackFinderProcessor.cc.

References _covariance.

Referenced by getLCIOStateAtRefPoint(), and match().

◆ getFirstRow()

int marlintpc::rb_Segment::getFirstRow ( ) const

Get first row number.

Definition at line 1024 of file RowTripletBasedTrackFinderProcessor.cc.

References _hitList.

Referenced by match(), and marlintpc::RowBasedFastHoughTransformationProcessor::processEvent().

◆ getHitList()

const hitListType & marlintpc::rb_Segment::getHitList ( ) const

Get list of hits.

Definition at line 1064 of file RowTripletBasedTrackFinderProcessor.cc.

References _hitList.

Referenced by marlintpc::RowBasedFastHoughTransformationProcessor::processEvent().

◆ getId()

int marlintpc::rb_Segment::getId ( ) const

Get segment ID.

Definition at line 1079 of file RowTripletBasedTrackFinderProcessor.cc.

References _segId.

◆ getLastRow()

int marlintpc::rb_Segment::getLastRow ( ) const

Get first last number.

Definition at line 1029 of file RowTripletBasedTrackFinderProcessor.cc.

References _hitList.

Referenced by match(), and marlintpc::RowBasedFastHoughTransformationProcessor::processEvent().

◆ getLCIOStateAtRefPoint()

void marlintpc::rb_Segment::getLCIOStateAtRefPoint	(	const double *	refPos,
		TVectorD &	newPar,
		TMatrixDSym &	newCov
	)		const

Get segment state at reference point.

Propagate track state at point and transform from helix to LCIO representation.

Parameters

[in]	refPos	reference point (X coordinate)
[out]	newPar	parameter vector
[out]	newCov	covariance matrix

Definition at line 1194 of file RowTripletBasedTrackFinderProcessor.cc.

References _bzc, _npar, getCov(), getPar(), getRefPoint(), marlintpc::simpleHelix::getStateAt(), and marlintpc::simpleHelix::helixToLCIOJacobian().

◆ getNdf()

int marlintpc::rb_Segment::getNdf ( ) const

Get number of degrees of freedom (of segment fit).

Definition at line 1044 of file RowTripletBasedTrackFinderProcessor.cc.

References _ndf.

Referenced by marlintpc::RowTripletBasedTrackFinderProcessor::processEvent(), marlintpc::RowBasedFastHoughTransformationProcessor::processEvent(), and marlintpc::RowBasedPadPulseRoadSearchProcessor::processEvent().

◆ getPar() [1/2]

void marlintpc::rb_Segment::getPar ( double * par ) const

Get (all five helix) parameters from segment fit.

Parameters

[out] par helix parameter (curvature is zero for Bz*c = 0.)

Definition at line 1057 of file RowTripletBasedTrackFinderProcessor.cc.

References _npar, and _parameters.

Referenced by match().

◆ getPar() [2/2]

const TVectorD & marlintpc::rb_Segment::getPar ( ) const

Get parameter vector.

Definition at line 1069 of file RowTripletBasedTrackFinderProcessor.cc.

References _parameters.

Referenced by getLCIOStateAtRefPoint(), and match().

◆ getRefPoint()

void marlintpc::rb_Segment::getRefPoint ( double * position ) const

Get reference point.

Parameters

[out] position position of reference point

Definition at line 1037 of file RowTripletBasedTrackFinderProcessor.cc.

References _refX, _refY, and _refZ.

Referenced by getLCIOStateAtRefPoint(), and match().

◆ match() [1/3]

bool marlintpc::rb_Segment::match	(	rb_Segment *	seg,
		const double	chi2Cut,
		const int	trpStepSize
	)		const

Match segment with other segment.

Compare the (4 (line) or 5 (helix)) track parameters (at the mid point). The segments must not overlap (in rows) and the (row) gap must be smaller than the average length.

Parameters