Cluster finder in MUON arm of ALICE. More...

#include <AliMUONClusterFinderPeakFit.h>

Inheritance diagram for AliMUONClusterFinderPeakFit:

Public Member Functions
	AliMUONClusterFinderPeakFit (Bool_t plot, AliMUONVClusterFinder *clusterFinder)

virtual	~AliMUONClusterFinderPeakFit ()

virtual Bool_t	NeedSegmentation () const
	It needs segmentation. More...

virtual Bool_t	Prepare (Int_t detElemId, TObjArray pads[2], const AliMpArea &area, const AliMpVSegmentation seg[2])

virtual AliMUONCluster *	NextCluster ()

Int_t	GetNMax () const
	Return the number of local maxima. More...

virtual void	Print (Option_t *opt="") const

Public Member Functions inherited from AliMUONVClusterFinder
	AliMUONVClusterFinder ()

virtual	~AliMUONVClusterFinder ()

virtual Bool_t	Prepare (Int_t detElemId, TObjArray *pads[2], const AliMpArea &area)

virtual Bool_t	UsePad (const AliMUONPad &pad)

virtual void	SetChargeHints (Double_t, Double_t)

Private Member Functions
	AliMUONClusterFinderPeakFit (const AliMUONClusterFinderPeakFit &rhs)
	Not implemented. More...

AliMUONClusterFinderPeakFit &	operator= (const AliMUONClusterFinderPeakFit &rhs)
	Not implemented. More...

Bool_t	WorkOnPreCluster ()

AliMUONCluster *	CheckPrecluster (const AliMUONCluster &cluster)
	Check precluster to simplify it (if possible), and return the simplified cluster. More...

AliMUONCluster *	CheckPreclusterTwoCathodes (AliMUONCluster *cluster)

Bool_t	Overlap (const AliMUONPad &pad, const AliMUONPad &pixel)
	Checks whether a pad and a pixel have an overlapping area. More...

void	BuildPixArray (AliMUONCluster &cluster)
	build array of pixels More...

void	BuildPixArrayOneCathode (AliMUONCluster &cluster)

void	PadOverHist (Int_t idir, Int_t ix0, Int_t iy0, AliMUONPad pad, TH2D h1, TH2D *h2)

void	RemovePixel (Int_t i)

AliMUONPad *	Pixel (Int_t i) const

Int_t	FindLocalMaxima (TObjArray pixArray, Int_t localMax, Double_t *maxVal)

void	FlagLocalMax (TH2D hist, Int_t i, Int_t j, Int_t isLocalMax)

void	FindClusterCOG (AliMUONCluster &cluster, const Int_t *localMax, Int_t iMax)

void	FindClusterFit (AliMUONCluster &cluster, const Int_t localMax, const Int_t maxPos, Int_t nMax)

void	PadsInXandY (AliMUONCluster &cluster, Int_t &nInX, Int_t &nInY) const

void	CheckOverlaps ()

Private Attributes
AliMUONVClusterFinder *	fPreClusterFinder
	! the pre-clustering worker More...

AliMUONCluster *	fPreCluster
	! current pre-cluster More...

TObjArray	fClusterList
	! clusters corresponding to the current pre-cluster More...

AliMUONMathieson *	fMathieson
	! Mathieson to compute the charge repartition More...

Int_t	fEventNumber
	! current event being processed More...

Int_t	fDetElemId
	! current DE being processed More...

Int_t	fClusterNumber
	! current cluster number More...

Int_t	fNMax
	! number of local maxima More...

TH2D *	fHistAnode
	! histo for local maxima search More...

const AliMpVSegmentation *	fkSegmentation [2]
	! new segmentation More...

TObjArray *	fPixArray
	! collection of pixels More...

Int_t	fDebug
	! debug level More...

Bool_t	fPlot
	! whether we should plot thing (for debug only, quite slow!) More...

Int_t	fNClusters
	! total number of clusters More...

Int_t	fNAddVirtualPads
	! number of clusters for which we added virtual pads More...

Static Private Attributes
static const Int_t	fgkZero = 0x0
	pad "basic" state More...

static const Int_t	fgkMustKeep = 0x1
	do not kill (for pixels) More...

static const Int_t	fgkUseForFit = 0x10
	should be used for fit More...

static const Int_t	fgkOver = 0x100
	processing is over More...

static const Int_t	fgkModified = 0x1000
	modified pad charge More...

static const Int_t	fgkCoupled = 0x10000
	coupled pad More...

static const Double_t	fgkZeroSuppression = 6
	average zero suppression value More...

static const Double_t	fgkDistancePrecision = 1e-3
	used to check overlaps and so on More...

static const TVector2	fgkIncreaseSize
	idem More...

static const TVector2	fgkDecreaseSize
	idem More...

Detailed Description

Cluster finder in MUON arm of ALICE.

Clusterizer class based on simple peak finder

Pre-clustering is handled by AliMUONPreClusterFinder From a precluster a pixel array is built, and its local maxima are used to get pads and make the fit with up to 3 hit candidates or compute pad centers of gravity for larger number of peaks.

Author: Laurent Aphecetche (for the "new" C++ structure) and Alexander Zinchenko, JINR Dubna, for the hardcore of it ;-)

Definition at line 29 of file AliMUONClusterFinderPeakFit.h.

Constructor & Destructor Documentation

AliMUONClusterFinderPeakFit::AliMUONClusterFinderPeakFit	(	Bool_t	plot,
		AliMUONVClusterFinder *	clusterFinder
	)

Constructor

Definition at line 138 of file AliMUONClusterFinderPeakFit.cxx.

AliMUONClusterFinderPeakFit::~AliMUONClusterFinderPeakFit ( )

virtual

Destructor

Definition at line 163 of file AliMUONClusterFinderPeakFit.cxx.

AliMUONClusterFinderPeakFit::AliMUONClusterFinderPeakFit ( const AliMUONClusterFinderPeakFit & rhs )

private

Not implemented.

Member Function Documentation

void AliMUONClusterFinderPeakFit::BuildPixArray ( AliMUONCluster & cluster )

private

build array of pixels

Build pixel array

Definition at line 606 of file AliMUONClusterFinderPeakFit.cxx.

Referenced by WorkOnPreCluster().

void AliMUONClusterFinderPeakFit::BuildPixArrayOneCathode ( AliMUONCluster & cluster )

private

Build the pixel array

Definition at line 625 of file AliMUONClusterFinderPeakFit.cxx.

Referenced by BuildPixArray().

void AliMUONClusterFinderPeakFit::CheckOverlaps ( )

private

For debug only : check if some pixels overlap...

Definition at line 566 of file AliMUONClusterFinderPeakFit.cxx.

AliMUONCluster * AliMUONClusterFinderPeakFit::CheckPrecluster ( const AliMUONCluster & cluster )

private

Check precluster to simplify it (if possible), and return the simplified cluster.

Check precluster in order to attempt to simplify it (mostly for two-cathode preclusters)

Definition at line 347 of file AliMUONClusterFinderPeakFit.cxx.

Referenced by WorkOnPreCluster().

AliMUONCluster * AliMUONClusterFinderPeakFit::CheckPreclusterTwoCathodes ( AliMUONCluster * cluster )

private

Check two-cathode cluster

Definition at line 381 of file AliMUONClusterFinderPeakFit.cxx.

Referenced by CheckPrecluster().

void AliMUONClusterFinderPeakFit::FindClusterCOG	(	AliMUONCluster &	cluster,
		const Int_t *	localMax,
		Int_t	iMax
	)

private

Find COG of pad charge distribution around local maximum iMax

Definition at line 996 of file AliMUONClusterFinderPeakFit.cxx.

Referenced by WorkOnPreCluster().

void AliMUONClusterFinderPeakFit::FindClusterFit	(	AliMUONCluster &	cluster,
		const Int_t *	localMax,
		const Int_t *	maxPos,
		Int_t	nMax
	)

private

Fit pad charge distribution with nMax hit hypothesis

Definition at line 903 of file AliMUONClusterFinderPeakFit.cxx.

Referenced by WorkOnPreCluster().

Int_t AliMUONClusterFinderPeakFit::FindLocalMaxima	(	TObjArray *	pixArray,
		Int_t *	localMax,
		Double_t *	maxVal
	)

private

Find local maxima in pixel space

Definition at line 798 of file AliMUONClusterFinderPeakFit.cxx.

Referenced by WorkOnPreCluster().

void AliMUONClusterFinderPeakFit::FlagLocalMax	(	TH2D *	hist,
		Int_t	i,
		Int_t	j,
		Int_t *	isLocalMax
	)

private

Flag pixels (whether or not local maxima)

Definition at line 869 of file AliMUONClusterFinderPeakFit.cxx.

Referenced by FindLocalMaxima().

Int_t AliMUONClusterFinderPeakFit::GetNMax ( ) const

inline

Return the number of local maxima.

Definition at line 46 of file AliMUONClusterFinderPeakFit.h.

virtual Bool_t AliMUONClusterFinderPeakFit::NeedSegmentation ( ) const

inlinevirtual

It needs segmentation.

Reimplemented from AliMUONVClusterFinder.

Definition at line 36 of file AliMUONClusterFinderPeakFit.h.

AliMUONCluster * AliMUONClusterFinderPeakFit::NextCluster ( )

virtual

Todo:: add comment

Return next cluster

Implements AliMUONVClusterFinder.

Definition at line 230 of file AliMUONClusterFinderPeakFit.cxx.

AliMUONClusterFinderPeakFit & AliMUONClusterFinderPeakFit::operator= ( const AliMUONClusterFinderPeakFit & rhs )

private

Not implemented.

Protected assignement operator

Definition at line 1133 of file AliMUONClusterFinderPeakFit.cxx.

Bool_t AliMUONClusterFinderPeakFit::Overlap	(	const AliMUONPad &	pad,
		const AliMUONPad &	pixel
	)

private

Checks whether a pad and a pixel have an overlapping area.

Check if the pad and the pixel overlaps

Definition at line 333 of file AliMUONClusterFinderPeakFit.cxx.

Referenced by FindClusterCOG().

void AliMUONClusterFinderPeakFit::PadOverHist	(	Int_t	idir,
		Int_t	ix0,
		Int_t	iy0,
		AliMUONPad *	pad,
		TH2D *	h1,
		TH2D *	h2
	)

private

"Span" pad over histogram in the direction idir

Definition at line 751 of file AliMUONClusterFinderPeakFit.cxx.

Referenced by BuildPixArrayOneCathode().

void AliMUONClusterFinderPeakFit::PadsInXandY	(	AliMUONCluster &	cluster,
		Int_t &	nInX,
		Int_t &	nInY
	)		const

private

Find number of pads in X and Y-directions (excluding virtual ones and overflows)

Definition at line 1145 of file AliMUONClusterFinderPeakFit.cxx.

AliMUONPad * AliMUONClusterFinderPeakFit::Pixel ( Int_t i ) const

private

Returns pixel at index i

Definition at line 1176 of file AliMUONClusterFinderPeakFit.cxx.

Referenced by CheckOverlaps(), and RemovePixel().

Bool_t AliMUONClusterFinderPeakFit::Prepare	(	Int_t	detElemId,
		TObjArray *	pads[2],
		const AliMpArea &	area,
		const AliMpVSegmentation *	seg[2]
	)

virtual

Prepare for clustering

Reimplemented from AliMUONVClusterFinder.

Definition at line 175 of file AliMUONClusterFinderPeakFit.cxx.

void AliMUONClusterFinderPeakFit::Print ( Option_t * opt = "" ) const

virtual

printout

Definition at line 1184 of file AliMUONClusterFinderPeakFit.cxx.

void AliMUONClusterFinderPeakFit::RemovePixel ( Int_t i )

private

Remove pixel at index i

Definition at line 1166 of file AliMUONClusterFinderPeakFit.cxx.

Bool_t AliMUONClusterFinderPeakFit::WorkOnPreCluster ( )

private

Starting from a precluster, builds a pixel array, and then extract clusters from this array

Definition at line 277 of file AliMUONClusterFinderPeakFit.cxx.

Referenced by NextCluster().

Member Data Documentation

TObjArray AliMUONClusterFinderPeakFit::fClusterList

private

! clusters corresponding to the current pre-cluster

Definition at line 99 of file AliMUONClusterFinderPeakFit.h.

Referenced by FindClusterCOG(), FindClusterFit(), NextCluster(), and Prepare().

Int_t AliMUONClusterFinderPeakFit::fClusterNumber

private

! current cluster number

Definition at line 104 of file AliMUONClusterFinderPeakFit.h.

Referenced by NextCluster(), and Prepare().

Int_t AliMUONClusterFinderPeakFit::fDebug

private

! debug level

Definition at line 111 of file AliMUONClusterFinderPeakFit.h.

Referenced by AliMUONClusterFinderPeakFit(), CheckPreclusterTwoCathodes(), FindClusterCOG(), FindLocalMaxima(), and WorkOnPreCluster().

Int_t AliMUONClusterFinderPeakFit::fDetElemId

private

! current DE being processed

Definition at line 103 of file AliMUONClusterFinderPeakFit.h.

Referenced by CheckPreclusterTwoCathodes(), FindClusterCOG(), FindClusterFit(), Prepare(), and WorkOnPreCluster().

Int_t AliMUONClusterFinderPeakFit::fEventNumber

private

! current event being processed

Definition at line 102 of file AliMUONClusterFinderPeakFit.h.

Referenced by Prepare(), and WorkOnPreCluster().

const Int_t AliMUONClusterFinderPeakFit::fgkCoupled = 0x10000

staticprivate

coupled pad

Definition at line 89 of file AliMUONClusterFinderPeakFit.h.

const TVector2 AliMUONClusterFinderPeakFit::fgkDecreaseSize

staticprivate

idem

Definition at line 95 of file AliMUONClusterFinderPeakFit.h.

Referenced by CheckOverlaps(), CheckPreclusterTwoCathodes(), and Overlap().

const Double_t AliMUONClusterFinderPeakFit::fgkDistancePrecision = 1e-3

staticprivate

used to check overlaps and so on

Definition at line 93 of file AliMUONClusterFinderPeakFit.h.

Referenced by FindClusterCOG(), and PadOverHist().

const TVector2 AliMUONClusterFinderPeakFit::fgkIncreaseSize

staticprivate

idem

Definition at line 94 of file AliMUONClusterFinderPeakFit.h.

const Int_t AliMUONClusterFinderPeakFit::fgkModified = 0x1000

staticprivate

modified pad charge

Definition at line 88 of file AliMUONClusterFinderPeakFit.h.

const Int_t AliMUONClusterFinderPeakFit::fgkMustKeep = 0x1

staticprivate

do not kill (for pixels)

Definition at line 85 of file AliMUONClusterFinderPeakFit.h.

const Int_t AliMUONClusterFinderPeakFit::fgkOver = 0x100

staticprivate

processing is over

Definition at line 87 of file AliMUONClusterFinderPeakFit.h.

const Int_t AliMUONClusterFinderPeakFit::fgkUseForFit = 0x10

staticprivate

should be used for fit

Definition at line 86 of file AliMUONClusterFinderPeakFit.h.

Referenced by PadsInXandY().

const Int_t AliMUONClusterFinderPeakFit::fgkZero = 0x0

staticprivate

pad "basic" state

Definition at line 84 of file AliMUONClusterFinderPeakFit.h.

Referenced by PadsInXandY().

const Double_t AliMUONClusterFinderPeakFit::fgkZeroSuppression = 6

staticprivate

average zero suppression value

Definition at line 92 of file AliMUONClusterFinderPeakFit.h.

TH2D* AliMUONClusterFinderPeakFit::fHistAnode

private

! histo for local maxima search

Definition at line 106 of file AliMUONClusterFinderPeakFit.h.

Referenced by FindClusterCOG(), FindClusterFit(), FindLocalMaxima(), and WorkOnPreCluster().

const AliMpVSegmentation* AliMUONClusterFinderPeakFit::fkSegmentation[2]

private

! new segmentation

Definition at line 108 of file AliMUONClusterFinderPeakFit.h.

Referenced by AliMUONClusterFinderPeakFit(), CheckPreclusterTwoCathodes(), and Prepare().

AliMUONMathieson* AliMUONClusterFinderPeakFit::fMathieson

private

! Mathieson to compute the charge repartition

Definition at line 100 of file AliMUONClusterFinderPeakFit.h.

Referenced by FindClusterFit(), Prepare(), and ~AliMUONClusterFinderPeakFit().

Int_t AliMUONClusterFinderPeakFit::fNAddVirtualPads

private

! number of clusters for which we added virtual pads

Definition at line 115 of file AliMUONClusterFinderPeakFit.h.

Referenced by ~AliMUONClusterFinderPeakFit().

Int_t AliMUONClusterFinderPeakFit::fNClusters

private

! total number of clusters

Definition at line 114 of file AliMUONClusterFinderPeakFit.h.

Referenced by ~AliMUONClusterFinderPeakFit().

Int_t AliMUONClusterFinderPeakFit::fNMax

private

! number of local maxima

Definition at line 105 of file AliMUONClusterFinderPeakFit.h.

Referenced by FindClusterFit(), and GetNMax().

TObjArray* AliMUONClusterFinderPeakFit::fPixArray

private

! collection of pixels

Definition at line 110 of file AliMUONClusterFinderPeakFit.h.

Referenced by BuildPixArray(), BuildPixArrayOneCathode(), CheckOverlaps(), FindLocalMaxima(), Pixel(), RemovePixel(), WorkOnPreCluster(), and ~AliMUONClusterFinderPeakFit().

Bool_t AliMUONClusterFinderPeakFit::fPlot

private

! whether we should plot thing (for debug only, quite slow!)

Definition at line 112 of file AliMUONClusterFinderPeakFit.h.

Referenced by AliMUONClusterFinderPeakFit(), and WorkOnPreCluster().

AliMUONCluster* AliMUONClusterFinderPeakFit::fPreCluster

private

! current pre-cluster

Definition at line 98 of file AliMUONClusterFinderPeakFit.h.

Referenced by CheckPreclusterTwoCathodes(), NextCluster(), Print(), and WorkOnPreCluster().

AliMUONVClusterFinder* AliMUONClusterFinderPeakFit::fPreClusterFinder

private

! the pre-clustering worker

Definition at line 97 of file AliMUONClusterFinderPeakFit.h.

Referenced by NextCluster(), Prepare(), and ~AliMUONClusterFinderPeakFit().

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

MUON/MUONrec/AliMUONClusterFinderPeakFit.h
MUON/MUONrec/AliMUONClusterFinderPeakFit.cxx

Public Member Functions

Private Member Functions

Private Attributes

Static Private Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation