[u/mrichter/AliRoot.git] / TRD / AliTRDseedV1.h

#ifndef ALITRDSEEDV1_H
#define ALITRDSEEDV1_H
/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
* See cxx source for full Copyright notice                               */

/* $Id$ */

////////////////////////////////////////////////////////////////////////////
//                                                                        //
//  The TRD offline tracklet                                              //
//                                                                        //
////////////////////////////////////////////////////////////////////////////

#ifndef ALITRDTRACKLETBASE_H
#include "AliTRDtrackletBase.h"
#endif

#ifndef ROOT_TMath
#include "TMath.h"
#endif

#ifndef ALITRDGEOMETRY_H
#include "AliTRDgeometry.h"
#endif

#ifndef ALIPID_H
#include "AliPID.h"
#endif

#ifndef ALIRIEMAN_H
#include "AliRieman.h"
#endif

#ifndef ALITRDCLUSTER_H 
#include "AliTRDcluster.h"
#endif

class TTreeSRedirector;

class AliRieman;

class AliTRDtrackingChamber;
class AliTRDtrackV1;
class AliTRDReconstructor;
class AliTRDseedV1 : public AliTRDtrackletBase
{
public:
  enum ETRDtrackletBuffers {    
    kNtb       = 31     // max clusters/pad row
   ,kNclusters = 2*kNtb // max number of clusters/tracklet
   ,kNslices   = 10     // max dEdx slices
  };

  // bits from 0-13 are reserved by ROOT (see TObject.h)
  enum ETRDtrackletStatus {
    kOwner      = BIT(14) // owner of its clusters
   ,kRowCross   = BIT(15) // pad row cross tracklet
   ,kCalib      = BIT(16) // calibrated tracklet
   ,kKink       = BIT(17) // kink prolongation tracklet
   ,kStandAlone = BIT(18)
  };

  AliTRDseedV1(Int_t det = -1);
  ~AliTRDseedV1();
  AliTRDseedV1(const AliTRDseedV1 &ref);
  AliTRDseedV1& operator=(const AliTRDseedV1 &ref);

/*  Bool_t	  AttachClustersIter(
              AliTRDtrackingChamber *chamber, Float_t quality, 
              Bool_t kZcorr = kFALSE, AliTRDcluster *c=0x0);*/
  Bool_t	  AttachClusters(
              AliTRDtrackingChamber *chamber, Bool_t tilt = kFALSE);
  void      Bootstrap(const AliTRDReconstructor *rec);
  void      Calibrate();
  void      CookdEdx(Int_t nslices);
  void      CookLabels();
  Bool_t    CookPID();
  Bool_t    Fit(Bool_t tilt=kTRUE, Int_t errors = 2);
//   void      FitMI();
  Bool_t    Init(AliTRDtrackV1 *track);
  inline void      Init(const AliRieman *fit);
  Bool_t    IsEqual(const TObject *inTracklet) const;
  Bool_t    IsCalibrated() const     { return TestBit(kCalib);}
  Bool_t    IsOwner() const          { return TestBit(kOwner);}
  Bool_t    IsKink() const           { return TestBit(kKink);}
  Bool_t    IsOK() const             { return GetN() > 4 && GetNUsed() < 4;}
  Bool_t    IsRowCross() const       { return TestBit(kRowCross);}
  Bool_t    IsUsable(Int_t i) const  { return fClusters[i] && !fClusters[i]->IsUsed();}
  Bool_t    IsStandAlone() const     { return TestBit(kStandAlone);}

  Float_t   GetC() const             { return fC; }
  Float_t   GetChi2() const          { return fChi2; }
  inline Float_t   GetChi2Z() const;
  inline Float_t   GetChi2Y() const;
  inline Float_t   GetChi2Phi() const;
  static void      GetClusterXY(const AliTRDcluster *c, Double_t &x, Double_t &y);
  void      GetCovAt(Double_t x, Double_t *cov) const;
  void      GetCovXY(Double_t *cov) const { memcpy(cov, &fCov[0], 3*sizeof(Double_t));}
  void      GetCovRef(Double_t *cov) const { memcpy(cov, &fRefCov[0], 3*sizeof(Double_t));}
  Float_t   GetdX() const            { return fdX;}
  Float_t*  GetdEdx()                { return &fdEdx[0];}
  Float_t   GetdQdl(Int_t ic) const;
  Float_t   GetdYdX() const          { return fYfit[1]; } 
  Float_t   GetdZdX() const          { return fZref[1]; }
  Int_t     GetdY() const            { return Int_t(GetY()/0.014);}
  Int_t     GetDetector() const      { return fDet;}
  void      GetCalibParam(Float_t &exb, Float_t &vd, Float_t &t0, Float_t &s2, Float_t &dl, Float_t &dt) const    { 
              exb = fExB; vd = fVD; t0 = fT0; s2 = fS2PRF; dl = fDiffL; dt = fDiffT;}
  AliTRDcluster*  GetClusters(Int_t i) const               { return i<0 || i>=kNclusters ? 0x0 : fClusters[i];}
  Int_t     GetIndexes(Int_t i) const{ return i<0 || i>=kNclusters ? -1 : fIndexes[i];}
  Int_t     GetLabels(Int_t i) const { return fLabels[i];}  
  Double_t  GetMomentum() const      { return fMom;}
  Int_t     GetN() const             { return (Int_t)fN&0x1f;}
  Int_t     GetN2() const            { return GetN();}
  Int_t     GetNUsed() const         { return Int_t((fN>>5)&0x1f);}
  Int_t     GetNShared() const       { return Int_t((fN>>10)&0x1f);}
  Float_t   GetQuality(Bool_t kZcorr) const;
  Float_t   GetPadLength() const     { return fPad[0];}
  Float_t   GetPadWidth() const      { return fPad[1];}
  Int_t     GetPlane() const         { return AliTRDgeometry::GetLayer(fDet);    }

  Float_t*  GetProbability(Bool_t force=kFALSE);
  inline Double_t  GetPID(Int_t is=-1) const;
  Float_t   GetS2Y() const           { return fS2Y;}
  Float_t   GetS2Z() const           { return fS2Z;}
  Float_t   GetSigmaY() const        { return fS2Y > 0. ? TMath::Sqrt(fS2Y) : 0.2;}
  Float_t   GetSnp() const           { return fYref[1]/TMath::Sqrt(1+fYref[1]*fYref[1]);}
  Float_t   GetTgl() const           { return fZref[1];}
  Float_t   GetTilt() const          { return fPad[2];}
  UInt_t    GetTrackletWord() const  { return 0;}
  Float_t   GetX0() const            { return fX0;}
  Float_t   GetX() const             { return fX0 - fX;}
  Float_t   GetY() const             { return fYfit[0] - fYfit[1] * fX;}
  Double_t  GetYat(Double_t x) const { return fYfit[0] - fYfit[1] * (fX0-x);}
  Float_t   GetYfit(Int_t id) const { return fYfit[id];}
  Float_t   GetYref(Int_t id) const { return fYref[id];}
  Float_t   GetZ() const            { return fZfit[0] - fZfit[1] * fX;}
  Double_t  GetZat(Double_t x) const { return fZfit[0] - fZfit[1] * (fX0-x);}
  Float_t   GetZfit(Int_t id) const { return fZfit[id];}
  Float_t   GetZref(Int_t id) const { return fZref[id];}
  Int_t     GetYbin() const         { return Int_t(GetY()/0.016);}
  Int_t     GetZbin() const         { return Int_t(GetZ()/fPad[0]);}

  inline AliTRDcluster* NextCluster();
  inline AliTRDcluster* PrevCluster();
  void      Print(Option_t *o = "") const;
  inline void ResetClusterIter(Bool_t forward = kTRUE);
  void      Reset();

  void      SetC(Float_t c)         { fC = c;}
  void      SetChi2(Float_t chi2)   { fChi2 = chi2;}
  void      SetCovRef(const Double_t *cov) { memcpy(&fRefCov[0], cov, 3*sizeof(Double_t));}
  void      SetIndexes(Int_t i, Int_t idx) { fIndexes[i]  = idx; }
  void      SetLabels(Int_t *lbls)   { memcpy(fLabels, lbls, 3*sizeof(Int_t)); }
  void      SetKink(Bool_t k)        { SetBit(kKink, k);}
  void      SetStandAlone(Bool_t st) { SetBit(kStandAlone, st); }
  void      SetMomentum(Double_t mom){ fMom = mom;}
  void      SetOwner();
  void      SetPadLength(Float_t l)  { fPad[0] = l;}
  void      SetPadWidth(Float_t w)   { fPad[1] = w;}
  void      SetTilt(Float_t tilt)    { fPad[2] = tilt; }
  void      SetDetector(Int_t d)     { fDet = d;  }
  void      SetDX(Float_t inDX)      { fdX = inDX;}
  void      SetReconstructor(const AliTRDReconstructor *rec) {fReconstructor = rec;}
  void      SetX0(Float_t x0)        { fX0 = x0; }
  void      SetYref(Int_t i, Float_t y) { fYref[i]     = y;}
  void      SetZref(Int_t i, Float_t z) { fZref[i]     = z;}
//   void      SetUsabilityMap(Long_t um)  { fUsable = um; }
  void      UpDate(const AliTRDtrackV1* trk);
  void      UpdateUsed();
  void      UseClusters();

protected:
  void        Copy(TObject &ref) const;

private:
  inline void SetN(Int_t n);
  inline void SetNUsed(Int_t n);
  inline void SetNShared(Int_t n);

  const AliTRDReconstructor *fReconstructor;//! local reconstructor
  AliTRDcluster  **fClusterIter;            //! clusters iterator
  Int_t            fIndexes[kNclusters];    //! Indexes
  Float_t          fExB;                    //! tg(a_L) @ tracklet location
  Float_t          fVD;                     //! drift velocity @ tracklet location
  Float_t          fT0;                     //! time 0 @ tracklet location
  Float_t          fS2PRF;                  //! sigma^2 PRF for xd->0 and phi=a_L 
  Float_t          fDiffL;                  //! longitudinal diffusion coefficient
  Float_t          fDiffT;                  //! transversal diffusion coefficient
  Char_t           fClusterIdx;             //! clusters iterator
  UShort_t         fN;                      // number of clusters attached/used/shared
  Short_t          fDet;                    // TRD detector
  AliTRDcluster   *fClusters[kNclusters];   // Clusters
  Float_t          fPad[3];                 // local pad definition : length/width/tilt 
  Float_t          fYref[2];                //  Reference y
  Float_t          fZref[2];                //  Reference z
  Float_t          fYfit[2];                //  Y fit position +derivation
  Float_t          fZfit[2];                //  Z fit position
  Float_t          fMom;                    //  Momentum estimate @ tracklet [GeV/c]
  Float_t          fdX;                     // length of time bin
  Float_t          fX0;                     // anode wire position
  Float_t          fX;                      // radial position of the tracklet
  Float_t          fY;                      // r-phi position of the tracklet
  Float_t          fZ;                      // z position of the tracklet
  Float_t          fS2Y;                    // estimated resolution in the r-phi direction 
  Float_t          fS2Z;                    // estimated resolution in the z direction 
  Float_t          fC;                      // Curvature
  Float_t          fChi2;                   // Global chi2  
  Float_t          fdEdx[kNslices];         // dE/dx measurements for tracklet
  Float_t          fProb[AliPID::kSPECIES]; //  PID probabilities
  Int_t            fLabels[3];              // most frequent MC labels and total number of different labels
  Double_t         fRefCov[3];              // covariance matrix of the track in the yz plane
  Double_t         fCov[3];                 // covariance matrix of the tracklet in the xy plane

  ClassDef(AliTRDseedV1, 6)                 // The offline TRD tracklet 
};

//____________________________________________________________
inline Float_t AliTRDseedV1::GetChi2Z() const
{
  Double_t dz = fZref[0]-fZfit[0]; dz*=dz;
  Double_t cov[3]; GetCovAt(fX, cov);
  Double_t s2 = fRefCov[2]+cov[2];
  return s2 > 0. ? dz/s2 : 0.; 
}

//____________________________________________________________
inline Float_t AliTRDseedV1::GetChi2Y() const
{
  Double_t dy = fYref[0]-fYfit[0]; dy*=dy;
  Double_t cov[3]; GetCovAt(fX, cov);
  Double_t s2 = fRefCov[0]+cov[0];
  return s2 > 0. ? dy/s2 : 0.; 
}

//____________________________________________________________
inline Float_t AliTRDseedV1::GetChi2Phi() const
{
  Double_t dphi = fYref[1]-fYfit[1]; dphi*=dphi;
  Double_t cov[3]; GetCovAt(fX, cov);
  Double_t s2 = fRefCov[2]+cov[2];
  return s2 > 0. ? dphi/s2 : 0.; 
}

//____________________________________________________________
inline Double_t AliTRDseedV1::GetPID(Int_t is) const
{
  if(is<0) return fProb[AliPID::kElectron];
  if(is<AliPID::kSPECIES) return fProb[is];
  return 0.;
}

//____________________________________________________________
inline void AliTRDseedV1::Init(const AliRieman *rieman)
{
  fZref[0] = rieman->GetZat(fX0);
  fZref[1] = rieman->GetDZat(fX0);
  fYref[0] = rieman->GetYat(fX0);
  fYref[1] = rieman->GetDYat(fX0);
  fC       = rieman->GetC(); 
  fChi2    = rieman->GetChi2();
}

//____________________________________________________________
inline AliTRDcluster* AliTRDseedV1::NextCluster()
{
// Mimic the usage of STL iterators.
// Forward iterator

  fClusterIdx++; fClusterIter++;
  while(fClusterIdx < kNclusters){
    if(!(*fClusterIter)){ 
      fClusterIdx++; 
      fClusterIter++;
      continue;
    }
    return *fClusterIter;
  }
  return 0x0;
}

//____________________________________________________________
inline AliTRDcluster* AliTRDseedV1::PrevCluster()
{
// Mimic the usage of STL iterators.
// Backward iterator

  fClusterIdx--; fClusterIter--;
  while(fClusterIdx >= 0){
    if(!(*fClusterIter)){ 
      fClusterIdx--; 
      fClusterIter--;
      continue;
    }
    return *fClusterIter;
  }
  return 0x0;
}

//____________________________________________________________
inline void AliTRDseedV1::ResetClusterIter(Bool_t forward) 
{
// Mimic the usage of STL iterators.
// Facilitate the usage of NextCluster for forward like 
// iterator (kTRUE) and PrevCluster for backward like iterator (kFALSE)

  if(forward){
    fClusterIter = &fClusters[0]; fClusterIter--; 
    fClusterIdx=-1;
  } else {
    fClusterIter = &fClusters[kNclusters-1]; fClusterIter++; 
    fClusterIdx=kNclusters;
  }
}

//____________________________________________________________
inline void AliTRDseedV1::SetN(Int_t n)
{
  if(n<0 || n>= (1<<5)) return; 
  fN &= ~0x1f;
  fN |= n;
}

//____________________________________________________________
inline void AliTRDseedV1::SetNUsed(Int_t n)
{
  if(n<0 || n>= (1<<5)) return; 
  fN &= ~(0x1f<<5);
  n <<= 5; fN |= n;
}

//____________________________________________________________
inline void AliTRDseedV1::SetNShared(Int_t n)
{
  if(n<0 || n>= (1<<5)) return; 
  fN &= ~(0x1f<<10);
  n <<= 10; fN |= n;
}


#endif
Commit	Line	Data
e4f2f73d	1	#ifndef ALITRDSEEDV1_H
	2	#define ALITRDSEEDV1_H
	3	/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
e44586fb	4	* See cxx source for full Copyright notice */
e4f2f73d	5
	6	/* $Id$ */
	7
	8	////////////////////////////////////////////////////////////////////////////
	9	// //
3e778975	10	// The TRD offline tracklet //
e4f2f73d	11	// //
	12	////////////////////////////////////////////////////////////////////////////
	13
3e778975	14	#ifndef ALITRDTRACKLETBASE_H
3e778975	15	#include "AliTRDtrackletBase.h"
e3cf3d02	16	#endif
	17
	18	#ifndef ROOT_TMath
	19	#include "TMath.h"
e4f2f73d	20	#endif
e4f2f73d	21
ae4e8b84	22	#ifndef ALITRDGEOMETRY_H
	23	#include "AliTRDgeometry.h"
	24	#endif
	25
0906e73e	26	#ifndef ALIPID_H
	27	#include "AliPID.h"
	28	#endif
	29
e4f2f73d	30	#ifndef ALIRIEMAN_H
	31	#include "AliRieman.h"
	32	#endif
	33
f29f13a6	34	#ifndef ALITRDCLUSTER_H
	35	#include "AliTRDcluster.h"
	36	#endif
	37
e4f2f73d	38	class TTreeSRedirector;
	39
	40	class AliRieman;
	41
eb38ed55	42	class AliTRDtrackingChamber;
f3d3af1b	43	class AliTRDtrackV1;
3a039a31	44	class AliTRDReconstructor;
3e778975	45	class AliTRDseedV1 : public AliTRDtrackletBase
3e778975	46	{
e3cf3d02	47	public:
e3cf3d02	48	enum ETRDtrackletBuffers {
8d2bec9e	49	kNtb = 31 // max clusters/pad row
	50	,kNclusters = 2*kNtb // max number of clusters/tracklet
	51	,kNslices = 10 // max dEdx slices
e44586fb	52	};
e3cf3d02	53
2e2915e7	54	// bits from 0-13 are reserved by ROOT (see TObject.h)
e3cf3d02	55	enum ETRDtrackletStatus {
f29f13a6	56	kOwner = BIT(14) // owner of its clusters
	57	,kRowCross = BIT(15) // pad row cross tracklet
	58	,kCalib = BIT(16) // calibrated tracklet
	59	,kKink = BIT(17) // kink prolongation tracklet
	60	,kStandAlone = BIT(18)
e44586fb	61	};
e44586fb	62
ae4e8b84	63	AliTRDseedV1(Int_t det = -1);
e44586fb	64	~AliTRDseedV1();
	65	AliTRDseedV1(const AliTRDseedV1 &ref);
	66	AliTRDseedV1& operator=(const AliTRDseedV1 &ref);
	67
f29f13a6	68	/* Bool_t AttachClustersIter(
203967fc	69	AliTRDtrackingChamber *chamber, Float_t quality,
f29f13a6	70	Bool_t kZcorr = kFALSE, AliTRDcluster c=0x0);/
203967fc	71	Bool_t AttachClusters(
b1957d3c	72	AliTRDtrackingChamber *chamber, Bool_t tilt = kFALSE);
203967fc	73	void Bootstrap(const AliTRDReconstructor *rec);
e3cf3d02	74	void Calibrate();
203967fc	75	void CookdEdx(Int_t nslices);
e3cf3d02	76	void CookLabels();
3e778975	77	Bool_t CookPID();
d937ad7a	78	Bool_t Fit(Bool_t tilt=kTRUE, Int_t errors = 2);
f29f13a6	79	// void FitMI();
203967fc	80	Bool_t Init(AliTRDtrackV1 *track);
e44586fb	81	inline void Init(const AliRieman *fit);
203967fc	82	Bool_t IsEqual(const TObject *inTracklet) const;
e3cf3d02	83	Bool_t IsCalibrated() const { return TestBit(kCalib);}
e44586fb	84	Bool_t IsOwner() const { return TestBit(kOwner);}
f29f13a6	85	Bool_t IsKink() const { return TestBit(kKink);}
3e778975	86	Bool_t IsOK() const { return GetN() > 4 && GetNUsed() < 4;}
e44586fb	87	Bool_t IsRowCross() const { return TestBit(kRowCross);}
f29f13a6	88	Bool_t IsUsable(Int_t i) const { return fClusters[i] && !fClusters[i]->IsUsed();}
f29f13a6	89	Bool_t IsStandAlone() const { return TestBit(kStandAlone);}
e44586fb	90
e3cf3d02	91	Float_t GetC() const { return fC; }
	92	Float_t GetChi2() const { return fChi2; }
	93	inline Float_t GetChi2Z() const;
	94	inline Float_t GetChi2Y() const;
f29f13a6	95	inline Float_t GetChi2Phi() const;
d937ad7a	96	static void GetClusterXY(const AliTRDcluster *c, Double_t &x, Double_t &y);
e44586fb	97	void GetCovAt(Double_t x, Double_t *cov) const;
d937ad7a	98	void GetCovXY(Double_t cov) const { memcpy(cov, &fCov[0], 3sizeof(Double_t));}
ac6764f5	99	void GetCovRef(Double_t cov) const { memcpy(cov, &fRefCov[0], 3sizeof(Double_t));}
203967fc	100	Float_t GetdX() const { return fdX;}
203967fc	101	Float_t* GetdEdx() { return &fdEdx[0];}
e44586fb	102	Float_t GetdQdl(Int_t ic) const;
3e778975	103	Float_t GetdYdX() const { return fYfit[1]; }
	104	Float_t GetdZdX() const { return fZref[1]; }
	105	Int_t GetdY() const { return Int_t(GetY()/0.014);}
203967fc	106	Int_t GetDetector() const { return fDet;}
e3cf3d02	107	void GetCalibParam(Float_t &exb, Float_t &vd, Float_t &t0, Float_t &s2, Float_t &dl, Float_t &dt) const {
e3cf3d02	108	exb = fExB; vd = fVD; t0 = fT0; s2 = fS2PRF; dl = fDiffL; dt = fDiffT;}
8d2bec9e	109	AliTRDcluster* GetClusters(Int_t i) const { return i<0 \|\| i>=kNclusters ? 0x0 : fClusters[i];}
8d2bec9e	110	Int_t GetIndexes(Int_t i) const{ return i<0 \|\| i>=kNclusters ? -1 : fIndexes[i];}
e3cf3d02	111	Int_t GetLabels(Int_t i) const { return fLabels[i];}
203967fc	112	Double_t GetMomentum() const { return fMom;}
3e778975	113	Int_t GetN() const { return (Int_t)fN&0x1f;}
	114	Int_t GetN2() const { return GetN();}
	115	Int_t GetNUsed() const { return Int_t((fN>>5)&0x1f);}
	116	Int_t GetNShared() const { return Int_t((fN>>10)&0x1f);}
e44586fb	117	Float_t GetQuality(Bool_t kZcorr) const;
dd8059a8	118	Float_t GetPadLength() const { return fPad[0];}
dd8059a8	119	Float_t GetPadWidth() const { return fPad[1];}
ae4e8b84	120	Int_t GetPlane() const { return AliTRDgeometry::GetLayer(fDet); }
ae4e8b84	121
3e778975	122	Float_t* GetProbability(Bool_t force=kFALSE);
3e778975	123	inline Double_t GetPID(Int_t is=-1) const;
e3cf3d02	124	Float_t GetS2Y() const { return fS2Y;}
	125	Float_t GetS2Z() const { return fS2Z;}
	126	Float_t GetSigmaY() const { return fS2Y > 0. ? TMath::Sqrt(fS2Y) : 0.2;}
	127	Float_t GetSnp() const { return fYref[1]/TMath::Sqrt(1+fYref[1]*fYref[1]);}
	128	Float_t GetTgl() const { return fZref[1];}
dd8059a8	129	Float_t GetTilt() const { return fPad[2];}
3e778975	130	UInt_t GetTrackletWord() const { return 0;}
e3cf3d02	131	Float_t GetX0() const { return fX0;}
e3cf3d02	132	Float_t GetX() const { return fX0 - fX;}
5a7a515d	133	Float_t GetY() const { return fYfit[0] - fYfit[1] * fX;}
b1957d3c	134	Double_t GetYat(Double_t x) const { return fYfit[0] - fYfit[1] * (fX0-x);}
e3cf3d02	135	Float_t GetYfit(Int_t id) const { return fYfit[id];}
e3cf3d02	136	Float_t GetYref(Int_t id) const { return fYref[id];}
3658afdc	137	Float_t GetZ() const { return fZfit[0] - fZfit[1] * fX;}
b1957d3c	138	Double_t GetZat(Double_t x) const { return fZfit[0] - fZfit[1] * (fX0-x);}
e3cf3d02	139	Float_t GetZfit(Int_t id) const { return fZfit[id];}
e3cf3d02	140	Float_t GetZref(Int_t id) const { return fZref[id];}
3e778975	141	Int_t GetYbin() const { return Int_t(GetY()/0.016);}
dd8059a8	142	Int_t GetZbin() const { return Int_t(GetZ()/fPad[0]);}
e3cf3d02	143
ae4e8b84	144	inline AliTRDcluster* NextCluster();
71ea19a3	145	inline AliTRDcluster* PrevCluster();
e44586fb	146	void Print(Option_t *o = "") const;
71ea19a3	147	inline void ResetClusterIter(Bool_t forward = kTRUE);
e3cf3d02	148	void Reset();
ae4e8b84	149
e3cf3d02	150	void SetC(Float_t c) { fC = c;}
e3cf3d02	151	void SetChi2(Float_t chi2) { fChi2 = chi2;}
0849f128	152	void SetCovRef(const Double_t cov) { memcpy(&fRefCov[0], cov, 3sizeof(Double_t));}
e3cf3d02	153	void SetIndexes(Int_t i, Int_t idx) { fIndexes[i] = idx; }
e3cf3d02	154	void SetLabels(Int_t lbls) { memcpy(fLabels, lbls, 3sizeof(Int_t)); }
f29f13a6	155	void SetKink(Bool_t k) { SetBit(kKink, k);}
f29f13a6	156	void SetStandAlone(Bool_t st) { SetBit(kStandAlone, st); }
203967fc	157	void SetMomentum(Double_t mom){ fMom = mom;}
29b87567	158	void SetOwner();
dd8059a8	159	void SetPadLength(Float_t l) { fPad[0] = l;}
dd8059a8	160	void SetPadWidth(Float_t w) { fPad[1] = w;}
cbe97468	161	void SetTilt(Float_t tilt) { fPad[2] = tilt; }
203967fc	162	void SetDetector(Int_t d) { fDet = d; }
bee2b41e	163	void SetDX(Float_t inDX) { fdX = inDX;}
3a039a31	164	void SetReconstructor(const AliTRDReconstructor *rec) {fReconstructor = rec;}
e3cf3d02	165	void SetX0(Float_t x0) { fX0 = x0; }
	166	void SetYref(Int_t i, Float_t y) { fYref[i] = y;}
	167	void SetZref(Int_t i, Float_t z) { fZref[i] = z;}
f29f13a6	168	// void SetUsabilityMap(Long_t um) { fUsable = um; }
b1957d3c	169	void UpDate(const AliTRDtrackV1* trk);
e3cf3d02	170	void UpdateUsed();
e3cf3d02	171	void UseClusters();
e4f2f73d	172
d937ad7a	173	protected:
3e778975	174	void Copy(TObject &ref) const;
e4f2f73d	175
e44586fb	176	private:
3e778975	177	inline void SetN(Int_t n);
	178	inline void SetNUsed(Int_t n);
	179	inline void SetNShared(Int_t n);
	180
0ae89c5d	181	const AliTRDReconstructor *fReconstructor;//! local reconstructor
e3cf3d02	182	AliTRDcluster **fClusterIter; //! clusters iterator
8d2bec9e	183	Int_t fIndexes[kNclusters]; //! Indexes
e3cf3d02	184	Float_t fExB; //! tg(a_L) @ tracklet location
	185	Float_t fVD; //! drift velocity @ tracklet location
	186	Float_t fT0; //! time 0 @ tracklet location
	187	Float_t fS2PRF; //! sigma^2 PRF for xd->0 and phi=a_L
	188	Float_t fDiffL; //! longitudinal diffusion coefficient
	189	Float_t fDiffT; //! transversal diffusion coefficient
71ea19a3	190	Char_t fClusterIdx; //! clusters iterator
dd8059a8	191	UShort_t fN; // number of clusters attached/used/shared
e3cf3d02	192	Short_t fDet; // TRD detector
8d2bec9e	193	AliTRDcluster *fClusters[kNclusters]; // Clusters
dd8059a8	194	Float_t fPad[3]; // local pad definition : length/width/tilt
e3cf3d02	195	Float_t fYref[2]; // Reference y
	196	Float_t fZref[2]; // Reference z
	197	Float_t fYfit[2]; // Y fit position +derivation
	198	Float_t fZfit[2]; // Z fit position
	199	Float_t fMom; // Momentum estimate @ tracklet [GeV/c]
e44586fb	200	Float_t fdX; // length of time bin
e3cf3d02	201	Float_t fX0; // anode wire position
	202	Float_t fX; // radial position of the tracklet
	203	Float_t fY; // r-phi position of the tracklet
	204	Float_t fZ; // z position of the tracklet
	205	Float_t fS2Y; // estimated resolution in the r-phi direction
	206	Float_t fS2Z; // estimated resolution in the z direction
	207	Float_t fC; // Curvature
	208	Float_t fChi2; // Global chi2
8d2bec9e	209	Float_t fdEdx[kNslices]; // dE/dx measurements for tracklet
e3cf3d02	210	Float_t fProb[AliPID::kSPECIES]; // PID probabilities
e3cf3d02	211	Int_t fLabels[3]; // most frequent MC labels and total number of different labels
6e4d4425	212	Double_t fRefCov[3]; // covariance matrix of the track in the yz plane
d937ad7a	213	Double_t fCov[3]; // covariance matrix of the tracklet in the xy plane
e4f2f73d	214
3e778975	215	ClassDef(AliTRDseedV1, 6) // The offline TRD tracklet
e4f2f73d	216	};
	217
	218	//____________________________________________________________
e3cf3d02	219	inline Float_t AliTRDseedV1::GetChi2Z() const
e4f2f73d	220	{
e3cf3d02	221	Double_t dz = fZref[0]-fZfit[0]; dz*=dz;
	222	Double_t cov[3]; GetCovAt(fX, cov);
	223	Double_t s2 = fRefCov[2]+cov[2];
	224	return s2 > 0. ? dz/s2 : 0.;
e4f2f73d	225	}
	226
	227	//____________________________________________________________
e3cf3d02	228	inline Float_t AliTRDseedV1::GetChi2Y() const
e4f2f73d	229	{
e3cf3d02	230	Double_t dy = fYref[0]-fYfit[0]; dy*=dy;
	231	Double_t cov[3]; GetCovAt(fX, cov);
	232	Double_t s2 = fRefCov[0]+cov[0];
	233	return s2 > 0. ? dy/s2 : 0.;
e4f2f73d	234	}
e4f2f73d	235
f29f13a6	236	//____________________________________________________________
	237	inline Float_t AliTRDseedV1::GetChi2Phi() const
	238	{
	239	Double_t dphi = fYref[1]-fYfit[1]; dphi*=dphi;
	240	Double_t cov[3]; GetCovAt(fX, cov);
	241	Double_t s2 = fRefCov[2]+cov[2];
	242	return s2 > 0. ? dphi/s2 : 0.;
	243	}
	244
3e778975	245	//____________________________________________________________
	246	inline Double_t AliTRDseedV1::GetPID(Int_t is) const
	247	{
	248	if(is<0) return fProb[AliPID::kElectron];
	249	if(is<AliPID::kSPECIES) return fProb[is];
	250	return 0.;
	251	}
	252
e4f2f73d	253	//____________________________________________________________
0906e73e	254	inline void AliTRDseedV1::Init(const AliRieman *rieman)
e4f2f73d	255	{
e44586fb	256	fZref[0] = rieman->GetZat(fX0);
	257	fZref[1] = rieman->GetDZat(fX0);
	258	fYref[0] = rieman->GetYat(fX0);
	259	fYref[1] = rieman->GetDYat(fX0);
55ef6967	260	fC = rieman->GetC();
55ef6967	261	fChi2 = rieman->GetChi2();
e4f2f73d	262	}
e4f2f73d	263
ae4e8b84	264	//____________________________________________________________
	265	inline AliTRDcluster* AliTRDseedV1::NextCluster()
	266	{
71ea19a3	267	// Mimic the usage of STL iterators.
	268	// Forward iterator
	269
ae4e8b84	270	fClusterIdx++; fClusterIter++;
8d2bec9e	271	while(fClusterIdx < kNclusters){
71ea19a3	272	if(!(*fClusterIter)){
	273	fClusterIdx++;
	274	fClusterIter++;
	275	continue;
	276	}
	277	return *fClusterIter;
	278	}
	279	return 0x0;
	280	}
	281
	282	//____________________________________________________________
	283	inline AliTRDcluster* AliTRDseedV1::PrevCluster()
	284	{
	285	// Mimic the usage of STL iterators.
	286	// Backward iterator
	287
	288	fClusterIdx--; fClusterIter--;
	289	while(fClusterIdx >= 0){
	290	if(!(*fClusterIter)){
	291	fClusterIdx--;
	292	fClusterIter--;
	293	continue;
	294	}
	295	return *fClusterIter;
	296	}
	297	return 0x0;
	298	}
	299
	300	//____________________________________________________________
	301	inline void AliTRDseedV1::ResetClusterIter(Bool_t forward)
	302	{
	303	// Mimic the usage of STL iterators.
	304	// Facilitate the usage of NextCluster for forward like
	305	// iterator (kTRUE) and PrevCluster for backward like iterator (kFALSE)
	306
	307	if(forward){
	308	fClusterIter = &fClusters[0]; fClusterIter--;
	309	fClusterIdx=-1;
	310	} else {
8d2bec9e	311	fClusterIter = &fClusters[kNclusters-1]; fClusterIter++;
8d2bec9e	312	fClusterIdx=kNclusters;
71ea19a3	313	}
ae4e8b84	314	}
ae4e8b84	315
3e778975	316	//____________________________________________________________
	317	inline void AliTRDseedV1::SetN(Int_t n)
	318	{
	319	if(n<0 \|\| n>= (1<<5)) return;
	320	fN &= ~0x1f;
	321	fN \|= n;
	322	}
	323
	324	//____________________________________________________________
	325	inline void AliTRDseedV1::SetNUsed(Int_t n)
	326	{
	327	if(n<0 \|\| n>= (1<<5)) return;
	328	fN &= ~(0x1f<<5);
	329	n <<= 5; fN \|= n;
	330	}
	331
	332	//____________________________________________________________
	333	inline void AliTRDseedV1::SetNShared(Int_t n)
	334	{
	335	if(n<0 \|\| n>= (1<<5)) return;
	336	fN &= ~(0x1f<<10);
	337	n <<= 10; fN \|= n;
	338	}
	339
	340
e4f2f73d	341	#endif
e4f2f73d	342
47d5d320	343
6e49cfdb	344