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

#include <AliMUONClusterFinderPeakCOG.h>

Inheritance diagram for AliMUONClusterFinderPeakCOG:

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

virtual	~AliMUONClusterFinderPeakCOG ()

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 ()

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
	AliMUONClusterFinderPeakCOG (const AliMUONClusterFinderPeakCOG &rhs)
	Not implemented. More...

AliMUONClusterFinderPeakCOG &	operator= (const AliMUONClusterFinderPeakCOG &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	FindCluster (AliMUONCluster &cluster, const Int_t *localMax, Int_t iMax)

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...

Int_t	fEventNumber
	! current event being processed More...

Int_t	fDetElemId
	! current DE being processed More...

Int_t	fClusterNumber
	! current cluster number More...

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

TH2D *	fHistAnode
	! histo for peak search 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 compute pad center of gravity.

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

Definition at line 28 of file AliMUONClusterFinderPeakCOG.h.

Constructor & Destructor Documentation

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

Constructor

Definition at line 69 of file AliMUONClusterFinderPeakCOG.cxx.

AliMUONClusterFinderPeakCOG::~AliMUONClusterFinderPeakCOG ( )

virtual

Destructor

Definition at line 92 of file AliMUONClusterFinderPeakCOG.cxx.

AliMUONClusterFinderPeakCOG::AliMUONClusterFinderPeakCOG ( const AliMUONClusterFinderPeakCOG & rhs )

private

Not implemented.

Member Function Documentation

void AliMUONClusterFinderPeakCOG::BuildPixArray ( AliMUONCluster & cluster )

private

build array of pixels

Build pixel array

Definition at line 510 of file AliMUONClusterFinderPeakCOG.cxx.

Referenced by WorkOnPreCluster().

void AliMUONClusterFinderPeakCOG::BuildPixArrayOneCathode ( AliMUONCluster & cluster )

private

Build the pixel array

Definition at line 529 of file AliMUONClusterFinderPeakCOG.cxx.

Referenced by BuildPixArray().

void AliMUONClusterFinderPeakCOG::CheckOverlaps ( )

private

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

Definition at line 470 of file AliMUONClusterFinderPeakCOG.cxx.

AliMUONCluster * AliMUONClusterFinderPeakCOG::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 251 of file AliMUONClusterFinderPeakCOG.cxx.

Referenced by WorkOnPreCluster().

AliMUONCluster * AliMUONClusterFinderPeakCOG::CheckPreclusterTwoCathodes ( AliMUONCluster * cluster )

private

Check two-cathode cluster

Definition at line 285 of file AliMUONClusterFinderPeakCOG.cxx.

Referenced by CheckPrecluster().

void AliMUONClusterFinderPeakCOG::FindCluster	(	AliMUONCluster &	cluster,
		const Int_t *	localMax,
		Int_t	iMax
	)

private

Find pixel cluster around local maximum iMax and pick up pads overlapping with it

Definition at line 787 of file AliMUONClusterFinderPeakCOG.cxx.

Referenced by WorkOnPreCluster().

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

private

Find local maxima in pixel space

Definition at line 682 of file AliMUONClusterFinderPeakCOG.cxx.

Referenced by WorkOnPreCluster().

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

private

Flag pixels (whether or not local maxima)

Definition at line 753 of file AliMUONClusterFinderPeakCOG.cxx.

Referenced by FindLocalMaxima().

virtual Bool_t AliMUONClusterFinderPeakCOG::NeedSegmentation ( ) const

inlinevirtual

It needs segmentation.

Reimplemented from AliMUONVClusterFinder.

Definition at line 35 of file AliMUONClusterFinderPeakCOG.h.

AliMUONCluster * AliMUONClusterFinderPeakCOG::NextCluster ( )

virtual

Todo:: add comment

Return next cluster

Implements AliMUONVClusterFinder.

Definition at line 138 of file AliMUONClusterFinderPeakCOG.cxx.

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

private

Not implemented.

Protected assignement operator

Definition at line 925 of file AliMUONClusterFinderPeakCOG.cxx.

Bool_t AliMUONClusterFinderPeakCOG::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 237 of file AliMUONClusterFinderPeakCOG.cxx.

Referenced by FindCluster().

void AliMUONClusterFinderPeakCOG::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 635 of file AliMUONClusterFinderPeakCOG.cxx.

Referenced by BuildPixArrayOneCathode().

void AliMUONClusterFinderPeakCOG::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 937 of file AliMUONClusterFinderPeakCOG.cxx.

AliMUONPad * AliMUONClusterFinderPeakCOG::Pixel ( Int_t i ) const

private

Returns pixel at index i

Definition at line 968 of file AliMUONClusterFinderPeakCOG.cxx.

Referenced by CheckOverlaps(), and RemovePixel().

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

virtual

Prepare for clustering

Reimplemented from AliMUONVClusterFinder.

Definition at line 103 of file AliMUONClusterFinderPeakCOG.cxx.

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

virtual

printout

Definition at line 976 of file AliMUONClusterFinderPeakCOG.cxx.

void AliMUONClusterFinderPeakCOG::RemovePixel ( Int_t i )

private

Remove pixel at index i

Definition at line 958 of file AliMUONClusterFinderPeakCOG.cxx.

Bool_t AliMUONClusterFinderPeakCOG::WorkOnPreCluster ( )

private

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

Definition at line 185 of file AliMUONClusterFinderPeakCOG.cxx.

Referenced by NextCluster().

Member Data Documentation

TObjArray AliMUONClusterFinderPeakCOG::fClusterList

private

! clusters corresponding to the current pre-cluster

Definition at line 95 of file AliMUONClusterFinderPeakCOG.h.

Referenced by FindCluster(), NextCluster(), and Prepare().

Int_t AliMUONClusterFinderPeakCOG::fClusterNumber

private

! current cluster number

Definition at line 99 of file AliMUONClusterFinderPeakCOG.h.

Referenced by NextCluster(), and Prepare().

Int_t AliMUONClusterFinderPeakCOG::fDebug

private

! debug level

Definition at line 105 of file AliMUONClusterFinderPeakCOG.h.

Referenced by CheckPreclusterTwoCathodes(), FindCluster(), FindLocalMaxima(), and WorkOnPreCluster().

Int_t AliMUONClusterFinderPeakCOG::fDetElemId

private

! current DE being processed

Definition at line 98 of file AliMUONClusterFinderPeakCOG.h.

Referenced by CheckPreclusterTwoCathodes(), FindCluster(), Prepare(), and WorkOnPreCluster().

Int_t AliMUONClusterFinderPeakCOG::fEventNumber

private

! current event being processed

Definition at line 97 of file AliMUONClusterFinderPeakCOG.h.

Referenced by Prepare(), and WorkOnPreCluster().

const Int_t AliMUONClusterFinderPeakCOG::fgkCoupled = 0x10000

staticprivate

coupled pad

Definition at line 84 of file AliMUONClusterFinderPeakCOG.h.

const TVector2 AliMUONClusterFinderPeakCOG::fgkDecreaseSize

staticprivate

idem

Definition at line 91 of file AliMUONClusterFinderPeakCOG.h.

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

const Double_t AliMUONClusterFinderPeakCOG::fgkDistancePrecision = 1e-3

staticprivate

used to check overlaps and so on

Definition at line 89 of file AliMUONClusterFinderPeakCOG.h.

Referenced by BuildPixArrayOneCathode(), FindCluster(), and PadOverHist().

const TVector2 AliMUONClusterFinderPeakCOG::fgkIncreaseSize

staticprivate

idem

Definition at line 90 of file AliMUONClusterFinderPeakCOG.h.

const Int_t AliMUONClusterFinderPeakCOG::fgkModified = 0x1000

staticprivate

modified pad charge

Definition at line 83 of file AliMUONClusterFinderPeakCOG.h.

const Int_t AliMUONClusterFinderPeakCOG::fgkMustKeep = 0x1

staticprivate

do not kill (for pixels)

Definition at line 80 of file AliMUONClusterFinderPeakCOG.h.

const Int_t AliMUONClusterFinderPeakCOG::fgkOver = 0x100

staticprivate

processing is over

Definition at line 82 of file AliMUONClusterFinderPeakCOG.h.

const Int_t AliMUONClusterFinderPeakCOG::fgkUseForFit = 0x10

staticprivate

should be used for fit

Definition at line 81 of file AliMUONClusterFinderPeakCOG.h.

Referenced by PadsInXandY().

const Int_t AliMUONClusterFinderPeakCOG::fgkZero = 0x0

staticprivate

pad "basic" state

Definition at line 79 of file AliMUONClusterFinderPeakCOG.h.

Referenced by PadsInXandY().

const Double_t AliMUONClusterFinderPeakCOG::fgkZeroSuppression = 6

staticprivate

average zero suppression value

Definition at line 88 of file AliMUONClusterFinderPeakCOG.h.

TH2D* AliMUONClusterFinderPeakCOG::fHistAnode

private

! histo for peak search

Definition at line 103 of file AliMUONClusterFinderPeakCOG.h.

Referenced by FindCluster(), FindLocalMaxima(), and WorkOnPreCluster().

const AliMpVSegmentation* AliMUONClusterFinderPeakCOG::fkSegmentation[2]

private

! new segmentation

Definition at line 101 of file AliMUONClusterFinderPeakCOG.h.

Referenced by CheckPreclusterTwoCathodes(), and Prepare().

Int_t AliMUONClusterFinderPeakCOG::fNAddVirtualPads

private

! number of clusters for which we added virtual pads

Definition at line 109 of file AliMUONClusterFinderPeakCOG.h.

Referenced by ~AliMUONClusterFinderPeakCOG().

Int_t AliMUONClusterFinderPeakCOG::fNClusters

private

! total number of clusters

Definition at line 108 of file AliMUONClusterFinderPeakCOG.h.

Referenced by ~AliMUONClusterFinderPeakCOG().

TObjArray* AliMUONClusterFinderPeakCOG::fPixArray

private

! collection of pixels

Definition at line 104 of file AliMUONClusterFinderPeakCOG.h.

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

Bool_t AliMUONClusterFinderPeakCOG::fPlot

private

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

Definition at line 106 of file AliMUONClusterFinderPeakCOG.h.

Referenced by WorkOnPreCluster().

AliMUONCluster* AliMUONClusterFinderPeakCOG::fPreCluster

private

! current pre-cluster

Definition at line 94 of file AliMUONClusterFinderPeakCOG.h.

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

AliMUONVClusterFinder* AliMUONClusterFinderPeakCOG::fPreClusterFinder

private

! the pre-clustering worker

Definition at line 93 of file AliMUONClusterFinderPeakCOG.h.

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

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

MUON/MUONrec/AliMUONClusterFinderPeakCOG.h
MUON/MUONrec/AliMUONClusterFinderPeakCOG.cxx

Public Member Functions

Private Member Functions

Private Attributes

Static Private Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation