--- /dev/null
+#ifndef ALIITSTRACKERUPGRADE_H
+#define ALIITSTRACKERUPGRADE_H
+
+
+
+#include "AliITStrackerMI.h"
+#include "AliITSlayerUpgrade.h"
+#include "AliITStrackMI.h"
+
+/* Copyright(c) 1998-2003, ALICE Experiment at CERN, All rights reserved. *
+ * See cxx source for full Copyright notice */
+
+/* $Id$ */
+////////////////////////////////////////////////////
+// ITS Upgrade Stand alone tracker class //
+// Authors: A.Mastroserio C.Terrevoli //
+// e-mail:annalisa.mastroserio@cern.ch //
+// cristina.terrevoli@ba.infn.it //
+// tracks are saved as AliITStrackV2 objects //
+////////////////////////////////////////////////////
+
+#include <TClonesArray.h>
+
+class AliITSclusterTable;
+class AliITStrackSA;
+class AliESDVertex;
+class AliESDEvent;
+class AliITSVertexer;
+class TTree;
+class TArrayD;
+
+class AliITStrackerUpgrade : public AliITStrackerMI {
+
+
+ public:
+
+ AliITStrackerUpgrade();
+ AliITStrackerUpgrade(const AliITStrackerUpgrade& tracker);
+ AliITStrackerUpgrade& operator=(const AliITStrackerUpgrade& source);
+ virtual ~AliITStrackerUpgrade();
+ virtual Int_t Clusters2Tracks(AliESDEvent *event);
+ Int_t FindTracks(AliESDEvent* event,Bool_t useAllClusters=kFALSE);
+ Int_t PropagateBack(AliESDEvent *event);
+ Int_t CorrectForPipeMaterial(AliITStrackMI *t, TString direction="inward");
+ Int_t RefitInward(AliESDEvent *event);//{return 0;}
+ AliCluster *GetCluster(Int_t index) const;
+
+ AliITStrackV2* FitTrack(AliITStrackSA* tr,Double_t* primaryVertex,Bool_t onePoint=kFALSE);
+ void StoreTrack(AliITStrackV2 *t,AliESDEvent *event, Bool_t pureSA) /*const*/;
+ Int_t FindTrackLowChiSquare() const;
+ Int_t LoadClusters(TTree *clusTree);
+ void SetVertex(AliESDVertex *vtx){fVert = vtx;}
+ void SetClusterTree(TTree * itscl){fITSclusters = itscl;}
+
+ void SetOutwardFinding() {fInwardFlag=kFALSE;}
+ void SetInwardFinding() {fInwardFlag=kTRUE;}
+ void SetOuterStartLayer(Int_t osl = 0) {
+ if(osl>(fNLayer-2)) AliWarning("Minimum Number of layers is 2. OuterStartLayer set to Nlayers-2");
+ fOuterStartLayer = TMath::Min(fNLayer-2,osl);
+ }
+ Int_t GetOuterStartLayer() const {return fOuterStartLayer;}
+ void SetInnerStartLayer(Int_t isl = 5) {
+ if(isl<1) AliWarning("Minimum Number of layers is 2. InnerStartLayer set to 1");
+ fInnerStartLayer = TMath::Max(1,isl);
+ }
+ Int_t GetInnerStartLayer() const {return fInnerStartLayer;}
+ void SetSAFlag(Bool_t fl){fITSStandAlone=fl;} // StandAlone flag setter
+ Bool_t GetSAFlag() const {return fITSStandAlone;} // StandAlone flag gett
+ void SetFixedWindowSizes(Int_t n=46, Double_t *phi=0, Double_t *lam=0);
+ void SetCalculatedWindowSizes(Int_t n=10, Float_t phimin=0.002, Float_t phimax=0.0145, Float_t lambdamin=0.003, Float_t lambdamax=0.008);
+ void UnloadClusters();
+ void SetMinNPoints(Int_t np){fMinNPoints=np;}
+ Int_t GetMinNPoints() const {return fMinNPoints;}
+ void SetMinimumChargeSDDSSD(Float_t minq=0.){fMinQ=minq;}
+ enum {kSAflag=0x8000}; //flag to mark clusters used in the SA tracker
+
+ protected:
+
+ //Initialization
+ void Init();
+ void CreateLayers(Int_t iEvent);
+ void ResetForFinding();
+ void UpdatePoints();
+ Bool_t SetFirstPoint(Int_t lay, Int_t clu, Double_t* primaryVertex);
+ static Double_t Curvature(Double_t x1,Double_t y1,Double_t x2,Double_t y2,
+ Double_t x3,Double_t y3);
+
+ Double_t ChoosePoint(Double_t p1, Double_t p2, Double_t pp);
+
+ static Int_t FindIntersection(Float_t a1, Float_t b1, Float_t c1, Float_t c2,
+ Float_t& x1,Float_t& y1, Float_t& x2, Float_t& y2);
+ static Int_t FindEquation(Float_t x1, Float_t y1, Float_t x2, Float_t y2,
+ Float_t x3, Float_t y3,Float_t& a, Float_t& b,
+ Float_t& c);
+
+ static Int_t FindLabel(Int_t l1, Int_t l2, Int_t l3, Int_t l4, Int_t l5, Int_t l6);
+ static Int_t Label(Int_t gl1, Int_t gl2, Int_t gl3, Int_t gl4, Int_t gl5,
+ Int_t gl6,Int_t gl7, Int_t gl8, Int_t gl9, Int_t gl10,Int_t gl11,
+ Int_t gl12, Int_t gl13, Int_t gl14,Int_t gl15, Int_t gl16,
+ Int_t gl17, Int_t gl18, Int_t numberofpoints=6);
+
+ Int_t SearchClusters(Int_t layer,Double_t phiwindow,Double_t lambdawindow,
+ AliITStrackSA* trs,Double_t zvertex,Int_t flagp);
+
+ void GetCoorAngles(AliITSRecPoint* cl,Double_t &phi,Double_t &lambda,Double_t &x,Double_t &y,Double_t &z,Double_t* vertex);
+ void GetCoorErrors(AliITSRecPoint* cl,Float_t &sx,Float_t &sy, Float_t &sz);
+ AliITSclusterTable* GetClusterCoord(Int_t layer,Int_t n) const {return (AliITSclusterTable*)fCluCoord[layer]->UncheckedAt(n);}
+ void RemoveClusterCoord(Int_t layer, Int_t n) {fCluCoord[layer]->RemoveAt(n);fCluCoord[layer]->Compress();}
+ Bool_t RefitAtBase(Double_t x, AliITStrackMI *track,
+ const Int_t *clusters);
+ Int_t UpdateMI(AliITStrackMI* track, const AliITSRecPoint* cl,Double_t chi2,Int_t layer) const;
+ Int_t CorrectForLayerMaterial(AliITStrackMI *t, Int_t layerindex, Double_t oldGlobXYZ[3], TString direction="inward");
+ Double_t GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer);
+ static Int_t GetError(Int_t layer,const AliITSRecPoint*cl,
+ Float_t tgl,Float_t tgphitr,Float_t expQ,
+ Float_t &erry,Float_t &errz,Float_t &covyz,
+ Bool_t addMisalErr=kTRUE);
+
+ static Int_t GetErrorOrigRecPoint(const AliITSRecPoint*cl,
+ Float_t &erry,Float_t &errz,Float_t &covyz);
+ static void GetNTeor(Int_t layer,const AliITSRecPoint* cl,
+ Float_t tgl,Float_t tgphitr,
+ Float_t &ny,Float_t &nz);
+
+ Int_t fNLayer;//number of layer in ITSUpgrade
+ Double_t fPhiEstimate; //Estimation of phi angle on next layer
+ Bool_t fITSStandAlone; //Tracking is performed in the ITS alone if kTRUE
+ Float_t fPoint1[2]; //! coord. of 1-st point to evaluate the curvature
+ Float_t fPoint2[2]; //! coord. of 2-nd point to evaluate the curvature
+ Float_t fPoint3[2]; //! coord. of 3-rd point to evaluate the curvature
+ Float_t fPointc[2]; //! current point coord (for curvature eval.)
+ Double_t fLambdac; //! current value of the Lambda angle in the window
+ Double_t fPhic; //! current value of the Phi angle in the window
+ Float_t fCoef1; //! param. of the equation of the circ. approx a layer
+ Float_t fCoef2; //! param. of the equation of the circ. approx a layer
+ Float_t fCoef3; //! param. of the equation of the circ. approx a layer
+ Int_t fNloop; // Number of iterqations on phi and lambda windows
+ Double_t *fPhiWin; // phi window sizes
+ Double_t *fLambdaWin; // lambda window sizes
+ AliESDVertex *fVert; //! primary vertex
+ AliITSVertexer *fVertexer; //! vertexer
+ TClonesArray *fListOfTracks; //! container for found tracks
+ TClonesArray *fListOfSATracks; //! container for found SA tracks
+ TTree *fITSclusters; //! pointer to ITS tree of clusters
+ Bool_t fInwardFlag; // set to kTRUE for inward track finding
+ Int_t fOuterStartLayer; // Outward search for tracks with <6 points: outer layer to start from
+ Int_t fInnerStartLayer; // Inward search for tracks with <6 points: inner layer to start from
+ Int_t fMinNPoints; // minimum number of clusters for a track
+ Float_t fMinQ; // lower cut on cluster charge (SDD and SSD)
+ AliITSlayerUpgrade** fLayers;
+
+ TClonesArray** fCluLayer; //! array with clusters
+ TClonesArray** fCluCoord; //! array with cluster info
+
+ ClassDef(AliITStrackerUpgrade,1)
+};
+
+#endif
+
+
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