[u/mrichter/AliRoot.git] / TRD / AliTRDtrackerV1.h

#ifndef ALITRDTRACKERV1_H
#define ALITRDTRACKERV1_H

/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
* See cxx source for full Copyright notice                               */ 
/* $Id$ */

////////////////////////////////////////////////////////////////////////////
//                                                                        //
//  The TRD tracker                                                       //
//                                                                        //
//  Authors:                                                              //
//    Marian Ivanov <M.Ivanov@gsi.de>                                     //
//    Alex Bercuci <A.Bercuci@gsi.de>                                     //
//    Jouri Belikov <J.Belikov@cern.ch>                                   //
//    Markus Fasel <M.Fasel@gsi.de>                                       //
//                                                                        //
////////////////////////////////////////////////////////////////////////////

//#ifndef ALITRACKER_H
#include "AliTracker.h"
//#endif

//#ifndef ALITRDTRACKINGSECTOR_H
#include "AliTRDtrackingSector.h"
//#endif

//#ifndef ROOT_TMatrixDfwd
#include <TMatrixDfwd.h>
//#endif

/**************************************************************************
* Class Status see source file                                           *
**************************************************************************/

class TFile;
class TTreeSRedirector;
class TClonesArray;
class TLinearFitter;

class AliRieman;
class AliESDEvent;
class AliCluster;
class AliTrackPoint;

class AliTRDcluster;
class AliTRDseedV1;
class AliTRDtrackingChamber;
class AliTRDchamberTimeBin;
class AliTRDtrackerFitter;
class AliTRDtrackV1;
class AliTRDReconstructor;

class AliTRDtrackerV1 : public AliTracker
{
public:
  enum{
    kOwner            = BIT(14) // owner of clusters
   ,kRemoveContainers = BIT(15) // delete containers after usage
  };
  enum{
    kMaxLayersPerSector   = 1000
    , kMaxTimeBinIndex    = 216
    , kTrackingSectors    = 18
    , kNTimeBins          = 35
    , kNPlanes            = 6
    , kNSeedPlanes        = 4
    , kMaxTracksStack     = 100
    , kNConfigs           = 15
  };
  AliTRDtrackerV1(AliTRDReconstructor *rec = NULL);
  virtual ~AliTRDtrackerV1();
  
  //temporary
  AliTRDtrackingSector* GetTrackingSector(Int_t sec) {return &fTrSec[sec];}
  
  Int_t           Clusters2Tracks(AliESDEvent *esd);
  AliCluster*     GetCluster(Int_t index) const;
  AliTRDseedV1*   GetTracklet(Int_t index) const;
  AliKalmanTrack* GetTrack(Int_t index) const;
  TClonesArray*   GetListOfClusters() const  { return fClusters;}
  TClonesArray*   GetListOfTracklets() const { return fTracklets;}
  TClonesArray*   GetListOfTracks() const    { return fTracks;}
  static Int_t    GetNTimeBins()             { return fgNTimeBins;}
  static void     GetExtrapolationConfig(Int_t iconfig, Int_t planes[2]);
  static void     GetSeedingConfig(Int_t iconfig, Int_t planes[4]);
  static TLinearFitter*  GetTiltedRiemanFitter();
  static TLinearFitter*  GetTiltedRiemanFitterConstraint();
  static AliRieman*      GetRiemanFitter();
  static void     FitRieman(AliTRDcluster **clusters, Double_t chi2[2]);
  static Float_t  FitRieman(AliTRDseedV1 *tracklets, Double_t *chi2, Int_t *const planes = NULL);
  static Float_t  FitTiltedRiemanConstraint(AliTRDseedV1 *tracklets, Double_t zVertex);
  static Float_t  FitTiltedRieman(AliTRDseedV1 *tracklets, Bool_t sigError);
  static Double_t FitTiltedRiemanV1(AliTRDseedV1 *tracklets);
  
  static Double_t FitRiemanTilt(const AliTRDtrackV1 *trk, AliTRDseedV1 *tracklets = NULL, Bool_t err=0, Int_t np = 0, AliTrackPoint *points = NULL);
  static Double_t FitLine(const AliTRDtrackV1 *trk, AliTRDseedV1 *tracklets = NULL, Bool_t err=0, Int_t np = 0, AliTrackPoint *points = NULL);
  static Double_t FitKalman(AliTRDtrackV1 *trk, const AliTRDseedV1 * const tracklets = NULL, Bool_t up=0, Int_t np = 0, AliTrackPoint *points = NULL);

  Bool_t          IsClustersOwner() const    { return TestBit(kOwner);}
  Bool_t          HasRemoveContainers() const    { return TestBit(kRemoveContainers);}
  void            SetClustersOwner(Bool_t own=kTRUE) {SetBit(kOwner, own); if(!own) fClusters = NULL;}
  void            SetRemoveContainers(Bool_t rm=kTRUE) {SetBit(kRemoveContainers, rm);}

  Int_t           FollowBackProlongation(AliTRDtrackV1 &t);
  Int_t           FollowProlongation(AliTRDtrackV1 &t);
  Int_t           LoadClusters(TTree *cTree);
  Int_t           LoadClusters(TClonesArray *const clusters);
  Int_t           PropagateBack(AliESDEvent *event);
  static Int_t    PropagateToX(AliTRDtrackV1 &t, Double_t xToGo, Double_t maxStep);
  Int_t           ReadClusters(TClonesArray* &array, TTree *in) const;
  Int_t           RefitInward(AliESDEvent *event);
  static void     SetNTimeBins(Int_t nTimeBins){fgNTimeBins = nTimeBins; }
  void            SetReconstructor(const AliTRDReconstructor *rec){ fkReconstructor = rec; }
  void            UnloadClusters();

  class AliTRDLeastSquare{
  public:
    AliTRDLeastSquare();
    ~AliTRDLeastSquare(){};
    
    void		AddPoint(const Double_t * const x, Double_t y, Double_t sigmaY);
    void		RemovePoint(const Double_t * const x, Double_t y, Double_t sigmaY);
    void		Eval();
    void    Reset();
    
    Double_t	GetFunctionParameter(Int_t ParNumber) const {return fParams[ParNumber];}
    Double_t	GetFunctionValue(const Double_t * const xpos) const;
    void		GetCovarianceMatrix(Double_t *storage) const;
  private:
          AliTRDLeastSquare(const AliTRDLeastSquare &);
    AliTRDLeastSquare& operator=(const AliTRDLeastSquare &);
    Double_t 	fParams[2];						// Fitparameter	
    Double_t 	fCovarianceMatrix[3];			// Covariance Matrix
    Double_t 	fSums[6];						// Sums
  };

  class AliTRDtrackFitterRieman{
    public:
      AliTRDtrackFitterRieman();
      ~AliTRDtrackFitterRieman();

      Double_t Eval();
      void Reset();

      Double_t GetYat(Double_t x) const;
      Double_t GetDyDxAt(Double_t x) const;
      Double_t GetZat(Double_t x) const;
      Double_t GetDzDx() const { return fParameters[4]; };
      Double_t GetCurvature() const;
      void GetCovAt(Double_t x, Double_t *cov) const;

      void SetRiemanFitter(TLinearFitter *const fitter) { fTrackFitter = fitter; }
      void SetTracklet(Int_t il, AliTRDseedV1 * const tracklet);
      void SetSysClusterError(Double_t err) { fSysClusterError = err; };
    private:
      AliTRDtrackFitterRieman(const AliTRDtrackFitterRieman &);
      AliTRDtrackFitterRieman &operator=(const AliTRDtrackFitterRieman &);
      void UpdateFitters(AliTRDseedV1 * const tracklet);
      Bool_t CheckAcceptable(Double_t offset, Double_t slope);
      Double_t CalculateReferenceX();

      TLinearFitter *fTrackFitter;        // Fitter for linearized track model
      AliTRDLeastSquare *fZfitter;        // Linear fitter in z-Direction
      AliTRDseedV1 *fTracklets[kNPlanes]; // Tracklet container
      TMatrixD *fCovarPolY;               // Polynomial Covariance Matrix Estimation (y-direction)
      TMatrixD *fCovarPolZ;               // Polynomial Covariance Matrix Estimation (z-direction)
      Double_t fXref;                     // Reference x position for fit in z-Direction
      Double_t fSysClusterError;          // Systematic cluster Error
      Double_t fParameters[5];            // Track Model Parameter
      Double_t fSumPolY[5];               // Sums for polynomial Covariance Matrix Estimation (y-direction)
      Double_t fSumPolZ[3];               // Sums for polynomial Covariance Matrix Estimation (z-direction)
  };

protected:
  static Bool_t  AdjustSector(AliTRDtrackV1 *const track); 
  Double_t       BuildSeedingConfigs(AliTRDtrackingChamber **stack, Int_t *configs);
  Int_t          BuildTrackingContainers();
  static Float_t CalculateChi2Z(AliTRDseedV1 *tracklets, Double_t offset, Double_t slope, Double_t xref);
  Int_t          Clusters2TracksSM(Int_t sector, AliESDEvent *esd);
  Int_t          Clusters2TracksStack(AliTRDtrackingChamber **stack, TClonesArray * const esdTrackList);
  AliTRDseedV1*  GetTracklet(AliTRDtrackV1 *const trk, Int_t plane, Int_t &idx);
  Bool_t         GetTrackPoint(Int_t index, AliTrackPoint &p) const;	
  Float_t        GetR4Layer(Int_t ly) const { return fR[ly];}
  Int_t          MakeSeeds(AliTRDtrackingChamber **stack, const AliTRDseedV1 * const sseed, const Int_t * const ipar);
  AliTRDtrackV1* MakeTrack(const AliTRDseedV1 * const seeds, Double_t *params);
  AliTRDtrackV1* SetTrack(const AliTRDtrackV1 * const track);
  AliTRDseedV1*  SetTracklet(const AliTRDseedV1 * const tracklet);

private:
  AliTRDtrackerV1(const AliTRDtrackerV1 &tracker);
  AliTRDtrackerV1 &operator=(const AliTRDtrackerV1 &tracker);
  Double_t       	CookLikelihood(AliTRDseedV1 *cseed, Int_t planes[4]);
  Double_t       	CalculateTrackLikelihood(const AliTRDseedV1 *const tracklets, Double_t *chi2);
  Int_t          	ImproveSeedQuality(AliTRDtrackingChamber **stack, AliTRDseedV1 *tracklet);
  static Float_t	CalculateReferenceX(const AliTRDseedV1 *const tracklets);
  void        ResetSeedTB();
  Float_t     GetChi2Y(const AliTRDseedV1 *const tracklets) const;
  Float_t     GetChi2Z(const AliTRDseedV1 *const tracklets) const;

private:
  const AliTRDReconstructor *fkReconstructor;            // reconstructor manager
  AliTRDgeometry      *fGeom;                           // Pointer to TRD geometry
  AliTRDtrackingSector fTrSec[kTrackingSectors];        // Array of tracking sectors;    
  TClonesArray        *fClusters;                       // List of clusters
  TClonesArray        *fTracklets;                      // List of tracklets
  TClonesArray        *fTracks;                         // List of tracks
  Float_t              fR[kNPlanes];                    //! rough radial position of each TRD layer

  // should go to the recoParam
  static const Double_t    fgkMaxChi2;                  // Max increment in track chi2 
  static const Float_t     fgkMinClustersInTrack;       // Min number of clusters in track
  static const Float_t     fgkLabelFraction;            // Min fraction of same label
  static const Double_t    fgkMaxSnp;                   // Maximal snp for tracking
  static const Double_t    fgkMaxStep;                  // Maximal step for tracking  
  
  // stand alone tracking
  static Double_t      fgTopologicQA[kNConfigs];        //  Topologic quality
  Double_t             fTrackQuality[kMaxTracksStack];  //  Track quality 
  Int_t                fSeedLayer[kMaxTracksStack];     //  Seed layer
  AliTRDchamberTimeBin *fSeedTB[kNSeedPlanes]; // seeding time bin planes
  Int_t                fSieveSeeding;                   //! Seeding iterator
  
  static const Double_t fgkX0[kNPlanes];                // default values for the position of anode wire
  static Int_t         fgNTimeBins;                     // Timebins per plane in track prolongation 
  static TLinearFitter *fgTiltedRieman;                 //  Fitter for the tilted Rieman fit without vertex constriant
  static TLinearFitter *fgTiltedRiemanConstrained;      //  Fitter for the tilted Rieman fit with vertex constraint	
  static AliRieman     *fgRieman;                       //  Fitter for the untilted Rieman fit
  
  ClassDef(AliTRDtrackerV1, 3)                          //  TRD tracker - tracklet based tracking

};
#endif
Commit	Line	Data
e4f2f73d	1	#ifndef ALITRDTRACKERV1_H
e4f2f73d	2	#define ALITRDTRACKERV1_H
eb38ed55	3
e4f2f73d	4	/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
e165b64b	5	* See cxx source for full Copyright notice */
e4f2f73d	6	/* $Id$ */
	7
	8	////////////////////////////////////////////////////////////////////////////
	9	// //
	10	// The TRD tracker //
	11	// //
	12	// Authors: //
eb38ed55	13	// Marian Ivanov <M.Ivanov@gsi.de> //
e4f2f73d	14	// Alex Bercuci <A.Bercuci@gsi.de> //
eb38ed55	15	// Jouri Belikov <J.Belikov@cern.ch> //
e4f2f73d	16	// Markus Fasel <M.Fasel@gsi.de> //
e4f2f73d	17	// //
eb38ed55	18	////////////////////////////////////////////////////////////////////////////
e4f2f73d	19
4d6aee34	20	//#ifndef ALITRACKER_H
eb38ed55	21	#include "AliTracker.h"
4d6aee34	22	//#endif
e4f2f73d	23
4d6aee34	24	//#ifndef ALITRDTRACKINGSECTOR_H
eb38ed55	25	#include "AliTRDtrackingSector.h"
4d6aee34	26	//#endif
e4f2f73d	27
4d6aee34	28	//#ifndef ROOT_TMatrixDfwd
6e39bde4	29	#include <TMatrixDfwd.h>
4d6aee34	30	//#endif
6e39bde4	31
e4f2f73d	32	/**************************************************************************
e165b64b	33	* Class Status see source file *
	34	**************************************************************************/
	35
e4f2f73d	36	class TFile;
	37	class TTreeSRedirector;
	38	class TClonesArray;
eb38ed55	39	class TLinearFitter;
e4f2f73d	40
	41	class AliRieman;
	42	class AliESDEvent;
eb38ed55	43	class AliCluster;
3a039a31	44	class AliTrackPoint;
e4f2f73d	45
eb38ed55	46	class AliTRDcluster;
e4f2f73d	47	class AliTRDseedV1;
eb38ed55	48	class AliTRDtrackingChamber;
eb38ed55	49	class AliTRDchamberTimeBin;
e4f2f73d	50	class AliTRDtrackerFitter;
0906e73e	51	class AliTRDtrackV1;
3a039a31	52	class AliTRDReconstructor;
4d6aee34	53
eb38ed55	54	class AliTRDtrackerV1 : public AliTracker
e4f2f73d	55	{
eb38ed55	56	public:
66f6bfd9	57	enum{
172b6f82	58	kOwner = BIT(14) // owner of clusters
172b6f82	59	,kRemoveContainers = BIT(15) // delete containers after usage
66f6bfd9	60	};
3b57a3f7	61	enum{
	62	kMaxLayersPerSector = 1000
	63	, kMaxTimeBinIndex = 216
	64	, kTrackingSectors = 18
	65	, kNTimeBins = 35
	66	, kNPlanes = 6
	67	, kNSeedPlanes = 4
2ed81ab2	68	, kMaxTracksStack = 100
3b57a3f7	69	, kNConfigs = 15
3b57a3f7	70	};
4d6aee34	71	AliTRDtrackerV1(AliTRDReconstructor *rec = NULL);
3b57a3f7	72	virtual ~AliTRDtrackerV1();
e4f2f73d	73
eb38ed55	74	//temporary
	75	AliTRDtrackingSector* GetTrackingSector(Int_t sec) {return &fTrSec[sec];}
	76
3b57a3f7	77	Int_t Clusters2Tracks(AliESDEvent *esd);
3b57a3f7	78	AliCluster* GetCluster(Int_t index) const;
	79	AliTRDseedV1* GetTracklet(Int_t index) const;
	80	AliKalmanTrack* GetTrack(Int_t index) const;
eb2b4f91	81	TClonesArray* GetListOfClusters() const { return fClusters;}
	82	TClonesArray* GetListOfTracklets() const { return fTracklets;}
	83	TClonesArray* GetListOfTracks() const { return fTracks;}
	84	static Int_t GetNTimeBins() { return fgNTimeBins;}
3b57a3f7	85	static void GetExtrapolationConfig(Int_t iconfig, Int_t planes[2]);
	86	static void GetSeedingConfig(Int_t iconfig, Int_t planes[4]);
	87	static TLinearFitter* GetTiltedRiemanFitter();
	88	static TLinearFitter* GetTiltedRiemanFitterConstraint();
	89	static AliRieman* GetRiemanFitter();
	90	static void FitRieman(AliTRDcluster **clusters, Double_t chi2[2]);
4d6aee34	91	static Float_t FitRieman(AliTRDseedV1 tracklets, Double_t chi2, Int_t *const planes = NULL);
3b57a3f7	92	static Float_t FitTiltedRiemanConstraint(AliTRDseedV1 *tracklets, Double_t zVertex);
3b57a3f7	93	static Float_t FitTiltedRieman(AliTRDseedV1 *tracklets, Bool_t sigError);
6e39bde4	94	static Double_t FitTiltedRiemanV1(AliTRDseedV1 *tracklets);
eb38ed55	95
4d6aee34	96	static Double_t FitRiemanTilt(const AliTRDtrackV1 trk, AliTRDseedV1 tracklets = NULL, Bool_t err=0, Int_t np = 0, AliTrackPoint *points = NULL);
	97	static Double_t FitLine(const AliTRDtrackV1 trk, AliTRDseedV1 tracklets = NULL, Bool_t err=0, Int_t np = 0, AliTrackPoint *points = NULL);
	98	static Double_t FitKalman(AliTRDtrackV1 trk, const AliTRDseedV1 const tracklets = NULL, Bool_t up=0, Int_t np = 0, AliTrackPoint *points = NULL);
8acca6a3	99
eb2b4f91	100	Bool_t IsClustersOwner() const { return TestBit(kOwner);}
172b6f82	101	Bool_t HasRemoveContainers() const { return TestBit(kRemoveContainers);}
4d6aee34	102	void SetClustersOwner(Bool_t own=kTRUE) {SetBit(kOwner, own); if(!own) fClusters = NULL;}
172b6f82	103	void SetRemoveContainers(Bool_t rm=kTRUE) {SetBit(kRemoveContainers, rm);}
66f6bfd9	104
3b57a3f7	105	Int_t FollowBackProlongation(AliTRDtrackV1 &t);
	106	Int_t FollowProlongation(AliTRDtrackV1 &t);
	107	Int_t LoadClusters(TTree *cTree);
4d6aee34	108	Int_t LoadClusters(TClonesArray *const clusters);
3b57a3f7	109	Int_t PropagateBack(AliESDEvent *event);
0e08101e	110	static Int_t PropagateToX(AliTRDtrackV1 &t, Double_t xToGo, Double_t maxStep);
3b57a3f7	111	Int_t ReadClusters(TClonesArray* &array, TTree *in) const;
	112	Int_t RefitInward(AliESDEvent *event);
	113	static void SetNTimeBins(Int_t nTimeBins){fgNTimeBins = nTimeBins; }
4d6aee34	114	void SetReconstructor(const AliTRDReconstructor *rec){ fkReconstructor = rec; }
172b6f82	115	void UnloadClusters();
3b57a3f7	116
	117	class AliTRDLeastSquare{
	118	public:
	119	AliTRDLeastSquare();
	120	~AliTRDLeastSquare(){};
	121
4d6aee34	122	void AddPoint(const Double_t * const x, Double_t y, Double_t sigmaY);
4d6aee34	123	void RemovePoint(const Double_t * const x, Double_t y, Double_t sigmaY);
3b57a3f7	124	void Eval();
6e39bde4	125	void Reset();
3b57a3f7	126
3b57a3f7	127	Double_t GetFunctionParameter(Int_t ParNumber) const {return fParams[ParNumber];}
4d6aee34	128	Double_t GetFunctionValue(const Double_t * const xpos) const;
3b57a3f7	129	void GetCovarianceMatrix(Double_t *storage) const;
	130	private:
	131	AliTRDLeastSquare(const AliTRDLeastSquare &);
	132	AliTRDLeastSquare& operator=(const AliTRDLeastSquare &);
	133	Double_t fParams[2]; // Fitparameter
	134	Double_t fCovarianceMatrix[3]; // Covariance Matrix
	135	Double_t fSums[6]; // Sums
	136	};
fbb2ea06	137
6e39bde4	138	class AliTRDtrackFitterRieman{
	139	public:
	140	AliTRDtrackFitterRieman();
	141	~AliTRDtrackFitterRieman();
	142
	143	Double_t Eval();
	144	void Reset();
	145
	146	Double_t GetYat(Double_t x) const;
	147	Double_t GetDyDxAt(Double_t x) const;
	148	Double_t GetZat(Double_t x) const;
	149	Double_t GetDzDx() const { return fParameters[4]; };
	150	Double_t GetCurvature() const;
	151	void GetCovAt(Double_t x, Double_t *cov) const;
	152
4d6aee34	153	void SetRiemanFitter(TLinearFitter *const fitter) { fTrackFitter = fitter; }
4d6aee34	154	void SetTracklet(Int_t il, AliTRDseedV1 * const tracklet);
6e39bde4	155	void SetSysClusterError(Double_t err) { fSysClusterError = err; };
	156	private:
	157	AliTRDtrackFitterRieman(const AliTRDtrackFitterRieman &);
	158	AliTRDtrackFitterRieman &operator=(const AliTRDtrackFitterRieman &);
4d6aee34	159	void UpdateFitters(AliTRDseedV1 * const tracklet);
6e39bde4	160	Bool_t CheckAcceptable(Double_t offset, Double_t slope);
	161	Double_t CalculateReferenceX();
	162
	163	TLinearFitter *fTrackFitter; // Fitter for linearized track model
	164	AliTRDLeastSquare *fZfitter; // Linear fitter in z-Direction
	165	AliTRDseedV1 *fTracklets[kNPlanes]; // Tracklet container
	166	TMatrixD *fCovarPolY; // Polynomial Covariance Matrix Estimation (y-direction)
	167	TMatrixD *fCovarPolZ; // Polynomial Covariance Matrix Estimation (z-direction)
	168	Double_t fXref; // Reference x position for fit in z-Direction
	169	Double_t fSysClusterError; // Systematic cluster Error
	170	Double_t fParameters[5]; // Track Model Parameter
	171	Double_t fSumPolY[5]; // Sums for polynomial Covariance Matrix Estimation (y-direction)
	172	Double_t fSumPolZ[3]; // Sums for polynomial Covariance Matrix Estimation (z-direction)
	173	};
	174
eb38ed55	175	protected:
4d6aee34	176	static Bool_t AdjustSector(AliTRDtrackV1 *const track);
3b57a3f7	177	Double_t BuildSeedingConfigs(AliTRDtrackingChamber *stack, Int_t configs);
66f6bfd9	178	Int_t BuildTrackingContainers();
3b57a3f7	179	static Float_t CalculateChi2Z(AliTRDseedV1 *tracklets, Double_t offset, Double_t slope, Double_t xref);
3b57a3f7	180	Int_t Clusters2TracksSM(Int_t sector, AliESDEvent *esd);
4d6aee34	181	Int_t Clusters2TracksStack(AliTRDtrackingChamber *stack, TClonesArray const esdTrackList);
4d6aee34	182	AliTRDseedV1* GetTracklet(AliTRDtrackV1 *const trk, Int_t plane, Int_t &idx);
3b57a3f7	183	Bool_t GetTrackPoint(Int_t index, AliTrackPoint &p) const;
eb2b4f91	184	Float_t GetR4Layer(Int_t ly) const { return fR[ly];}
4d6aee34	185	Int_t MakeSeeds(AliTRDtrackingChamber *stack, const AliTRDseedV1 const sseed, const Int_t * const ipar);
	186	AliTRDtrackV1* MakeTrack(const AliTRDseedV1 * const seeds, Double_t *params);
	187	AliTRDtrackV1* SetTrack(const AliTRDtrackV1 * const track);
	188	AliTRDseedV1* SetTracklet(const AliTRDseedV1 * const tracklet);
e4f2f73d	189
0906e73e	190	private:
3a039a31	191	AliTRDtrackerV1(const AliTRDtrackerV1 &tracker);
3a039a31	192	AliTRDtrackerV1 &operator=(const AliTRDtrackerV1 &tracker);
91834b8d	193	Double_t CookLikelihood(AliTRDseedV1 *cseed, Int_t planes[4]);
4d6aee34	194	Double_t CalculateTrackLikelihood(const AliTRDseedV1 const tracklets, Double_t chi2);
3a039a31	195	Int_t ImproveSeedQuality(AliTRDtrackingChamber *stack, AliTRDseedV1 tracklet);
4d6aee34	196	static Float_t CalculateReferenceX(const AliTRDseedV1 *const tracklets);
3a039a31	197	void ResetSeedTB();
4d6aee34	198	Float_t GetChi2Y(const AliTRDseedV1 *const tracklets) const;
4d6aee34	199	Float_t GetChi2Z(const AliTRDseedV1 *const tracklets) const;
e4f2f73d	200
0906e73e	201	private:
4d6aee34	202	const AliTRDReconstructor *fkReconstructor; // reconstructor manager
eb2b4f91	203	AliTRDgeometry *fGeom; // Pointer to TRD geometry
eb2b4f91	204	AliTRDtrackingSector fTrSec[kTrackingSectors]; // Array of tracking sectors;
bb56afff	205	TClonesArray *fClusters; // List of clusters
	206	TClonesArray *fTracklets; // List of tracklets
	207	TClonesArray *fTracks; // List of tracks
eb2b4f91	208	Float_t fR[kNPlanes]; //! rough radial position of each TRD layer
eb2b4f91	209
eb38ed55	210	// should go to the recoParam
eb2b4f91	211	static const Double_t fgkMaxChi2; // Max increment in track chi2
	212	static const Float_t fgkMinClustersInTrack; // Min number of clusters in track
	213	static const Float_t fgkLabelFraction; // Min fraction of same label
	214	static const Double_t fgkMaxSnp; // Maximal snp for tracking
	215	static const Double_t fgkMaxStep; // Maximal step for tracking
e165b64b	216
	217	// stand alone tracking
	218	static Double_t fgTopologicQA[kNConfigs]; // Topologic quality
	219	Double_t fTrackQuality[kMaxTracksStack]; // Track quality
	220	Int_t fSeedLayer[kMaxTracksStack]; // Seed layer
d611c74f	221	AliTRDchamberTimeBin *fSeedTB[kNSeedPlanes]; // seeding time bin planes
e165b64b	222	Int_t fSieveSeeding; //! Seeding iterator
	223
	224	static const Double_t fgkX0[kNPlanes]; // default values for the position of anode wire
2985ffcb	225	static Int_t fgNTimeBins; // Timebins per plane in track prolongation
e165b64b	226	static TLinearFitter *fgTiltedRieman; // Fitter for the tilted Rieman fit without vertex constriant
	227	static TLinearFitter *fgTiltedRiemanConstrained; // Fitter for the tilted Rieman fit with vertex constraint
	228	static AliRieman *fgRieman; // Fitter for the untilted Rieman fit
	229
	230	ClassDef(AliTRDtrackerV1, 3) // TRD tracker - tracklet based tracking
e4f2f73d	231
	232	};
	233	#endif