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AliRoot » ITS » UPGRADE » AliITSUVertexer

class AliITSUVertexer: public AliVertexer

This class is used to compute the position of all the primary
vertices in a single event using the upgraded ITS.
Optimizations ongoing.
Origin puccio@to.infn.it  Feb. 20 2014

Function Members (Methods)

public:

	AliITSUVertexer(Double_t phicut = 0.005, Double_t zcut = 0.002, Double_t paircut = 0.04, Double_t clustercut = 0.8, Int_t clcontrib = 5)
virtual	~AliITSUVertexer()
void	TObject::AbstractMethod(const char* method) const
virtual void	TObject::AppendPad(Option_t* option = "")
virtual void	TObject::Browse(TBrowser* b)
static TClass*	Class()
virtual const char*	TObject::ClassName() const
virtual void	TObject::Clear(Option_t* = "")
virtual TObject*	TObject::Clone(const char* newname = "") const
virtual Int_t	TObject::Compare(const TObject* obj) const
virtual void	TObject::Copy(TObject& object) const
virtual void	TObject::Delete(Option_t* option = "")MENU
virtual Int_t	TObject::DistancetoPrimitive(Int_t px, Int_t py)
virtual void	TObject::Draw(Option_t* option = "")
virtual void	TObject::DrawClass() constMENU
virtual TObject*	TObject::DrawClone(Option_t* option = "") constMENU
virtual void	TObject::Dump() constMENU
virtual void	TObject::Error(const char* method, const char* msgfmt) const
virtual void	TObject::Execute(const char* method, const char* params, Int_t* error = 0)
virtual void	TObject::Execute(TMethod* method, TObjArray* params, Int_t* error = 0)
virtual void	TObject::ExecuteEvent(Int_t event, Int_t px, Int_t py)
virtual void	TObject::Fatal(const char* method, const char* msgfmt) const
virtual TObject*	TObject::FindObject(const char* name) const
virtual TObject*	TObject::FindObject(const TObject* obj) const
virtual AliESDVertex*	FindVertexForCurrentEvent(TTree*)
virtual AliESDVertex*	GetAllVertices(Int_t& nVert) const
virtual Option_t*	TObject::GetDrawOption() const
static Long_t	TObject::GetDtorOnly()
virtual const char*	TObject::GetIconName() const
AliMultiplicity*	AliVertexer::GetMultiplicity() const
virtual const char*	TObject::GetName() const
UInt_t	GetNoLines() const
const Double_t*	AliVertexer::GetNominalCov() const
const Double_t*	AliVertexer::GetNominalPos() const
UShort_t	GetNumOfVertices() const
virtual char*	TObject::GetObjectInfo(Int_t px, Int_t py) const
static Bool_t	TObject::GetObjectStat()
virtual Option_t*	TObject::GetOption() const
virtual const char*	TObject::GetTitle() const
virtual UInt_t	TObject::GetUniqueID() const
virtual Bool_t	TObject::HandleTimer(TTimer* timer)
virtual ULong_t	TObject::Hash() const
virtual void	TObject::Info(const char* method, const char* msgfmt) const
virtual Bool_t	TObject::InheritsFrom(const char* classname) const
virtual Bool_t	TObject::InheritsFrom(const TClass* cl) const
virtual void	TObject::Inspect() constMENU
void	TObject::InvertBit(UInt_t f)
virtual TClass*	IsA() const
virtual Bool_t	TObject::IsEqual(const TObject* obj) const
virtual Bool_t	TObject::IsFolder() const
Bool_t	TObject::IsOnHeap() const
virtual Bool_t	TObject::IsSortable() const
Bool_t	TObject::IsZombie() const
virtual void	TObject::ls(Option_t* option = "") const
void	TObject::MayNotUse(const char* method) const
virtual Bool_t	TObject::Notify()
void	TObject::Obsolete(const char* method, const char* asOfVers, const char* removedFromVers) const
static void	TObject::operator delete(void* ptr)
static void	TObject::operator delete(void* ptr, void* vp)
static void	TObject::operator delete[](void* ptr)
static void	TObject::operator delete[](void* ptr, void* vp)
void*	TObject::operator new(size_t sz)
void*	TObject::operator new(size_t sz, void* vp)
void*	TObject::operator new[](size_t sz)
void*	TObject::operator new[](size_t sz, void* vp)
virtual void	TObject::Paint(Option_t* option = "")
virtual void	TObject::Pop()
virtual void	TObject::Print(Option_t* option = "") const
virtual void	PrintStatus() const
virtual Int_t	TObject::Read(const char* name)
virtual void	TObject::RecursiveRemove(TObject* obj)
void	TObject::ResetBit(UInt_t f)
virtual void	TObject::SaveAs(const char* filename = "", Option_t* option = "") constMENU
virtual void	TObject::SavePrimitive(basic_ostream<char,char_traits<char> >& out, Option_t* option = "")
void	TObject::SetBit(UInt_t f)
void	TObject::SetBit(UInt_t f, Bool_t set)
virtual void	TObject::SetDrawOption(Option_t* option = "")MENU
static void	TObject::SetDtorOnly(void* obj)
static void	TObject::SetObjectStat(Bool_t stat)
void	SetPhiCut(Double_t phicut)
virtual void	TObject::SetUniqueID(UInt_t uid)
void	AliVertexer::SetVtxStart(AliESDVertex* vtx)
void	AliVertexer::SetVtxStart(Double_t x, Double_t y, Double_t z)
void	AliVertexer::SetVtxStartSigma(Double_t sx, Double_t sy, Double_t sz)
void	SetZCut(Double_t zcut)
virtual void	ShowMembers(TMemberInspector&)
virtual void	Streamer(TBuffer&)
void	StreamerNVirtual(TBuffer& ClassDef_StreamerNVirtual_b)
virtual void	TObject::SysError(const char* method, const char* msgfmt) const
Bool_t	TObject::TestBit(UInt_t f) const
Int_t	TObject::TestBits(UInt_t f) const
virtual void	TObject::UseCurrentStyle()
virtual void	TObject::Warning(const char* method, const char* msgfmt) const
virtual Int_t	TObject::Write(const char* name = 0, Int_t option = 0, Int_t bufsize = 0)
virtual Int_t	TObject::Write(const char* name = 0, Int_t option = 0, Int_t bufsize = 0) const

protected:

	AliITSUVertexer(AliITSUVertexer&)
void	AddToCluster(UInt_t line, Bool_t weight = kFALSE, Int_t cl = -1)
void	CleanAndOrderClusters()
void	Clusterize(UInt_t l1, UInt_t l2, Bool_t weight = kFALSE)
void	ComputeClusterCentroid(UInt_t cl)
virtual void	TObject::DoError(int level, const char* location, const char* fmt, va_list va) const
void	FindTracklets()
void	FindVerticesForCurrentEvent()
void	TObject::MakeZombie()
Int_t	MatchPoints(UShort_t layer, Double_t anchor, Double_t* p0 = 0x0, Double_t* p1 = 0x0)
void	MoveLabels(Short_t start, Short_t end)
AliITSUVertexer&	operator=(const AliITSUVertexer& other)
void	Reset()
void	SortClusters()

Data Members

public:

enum TObject::EStatusBits {	kCanDelete
	kMustCleanup
	kObjInCanvas
	kIsReferenced
	kHasUUID
	kCannotPick
	kNoContextMenu
	kInvalidObject
};
enum TObject::[unnamed] {	kIsOnHeap
	kNotDeleted
	kZombie
	kBitMask
	kSingleKey
	kOverwrite
	kWriteDelete
};

protected:

Int_t	fClusterContribCut
Double_t	fClusterCut
Int_t*	fClusterIndex[3]	AliITSUClusterPix index
Double_t*	fClusterPhi[3]	Phi of clusters
TClonesArray*	fClusters[3]	! array of pointers to TClonesArray of AliITSUClusterPix not owned by this class
AliESDVertex*	AliVertexer::fCurrentVertex	! pointer to the current vertex
TClonesArray	fLines	! array of tracklets
TClonesArray	fLinesClusters	array of vertex candidates
UInt_t	fLinesPhi	number of tracklets built by using the first two layers
AliMultiplicity*	AliVertexer::fMult	! Multiplicity object
UInt_t	fNoClusters	number of clusters
UInt_t	fNoLines	number of tracklets
UShort_t	fNoVertices	number of vertices
Double_t	fPairCut	cut on pair
Double_t	fPhiCut	cut on deltaphi for cluster matching among first two layers
Bool_t*	fUsedClusters[3]	flag for used clusters in tracklet formation
Short_t*	fUsedLines	flag for used lines
AliESDVertex*	fVertices	array of vertices
Double_t	fZCut	cut on deltatheta for cluster matching among first two layers and the third one

Class Charts

Inheritance Chart:

TObject

←

AliVertexer

←

AliITSUVertexer

Function documentation

AliITSUVertexer(Double_t phicut = 0.005, Double_t zcut = 0.002, Double_t paircut = 0.04, Double_t clustercut = 0.8, Int_t clcontrib = 5)

 Standard I/O constructor

~AliITSUVertexer()

 Destructor

void FindVerticesForCurrentEvent()

 Try to find all the primary vertices in the current

AliESDVertex* FindVertexForCurrentEvent(TTree* )

 Reconstruction of all the primary vertices in the event. It returns the vertex with the highest number of contributors.

Int_t MatchPoints(UShort_t layer, Double_t anchor, Double_t* p0 = 0x0, Double_t* p1 = 0x0)

 Method for matching clusters with similar phi and z inside the range [zmin,zmax]

void PrintStatus() const

 Prints all the cuts and important data members for the current status

void Reset()

 Resets the vertexer for a new event (or for its destruction)

void FindTracklets()

 It combines recpoints over the first three layers to define a list of tracklets
 Here it uses the ordered list of points. Second and third layers are ordered using phi

void SortClusters()

 Reading of the clusters on the first three layer of the upgraded ITS

AliITSUVertexer(Double_t phicut = 0.005, Double_t zcut = 0.002, Double_t paircut = 0.04, Double_t clustercut = 0.8, Int_t clcontrib = 5)

 Constructors and destructors

AliESDVertex* GetAllVertices(Int_t& nVert) const

 Public methods

{ nVert=fNoVertices; return fVertices; }

UInt_t GetNoLines() const

 Getters

{ return fNoLines; }

UShort_t GetNumOfVertices() const

{ return fNoVertices; }

void SetPhiCut(Double_t phicut)

 Setters

{ fPhiCut=phicut; }

void SetZCut(Double_t zcut)

{ fZCut=zcut; }

AliITSUVertexer& operator=(const AliITSUVertexer& other)

void AddToCluster(UInt_t line, Bool_t weight = kFALSE, Int_t cl = -1)

void CleanAndOrderClusters()

void Clusterize(UInt_t l1, UInt_t l2, Bool_t weight = kFALSE)

void ComputeClusterCentroid(UInt_t cl)

void MoveLabels(Short_t start, Short_t end)