+ friend class AliHLTTRDTracklet; // wrapper for HLT
+
+public:
+ enum ETRDtrackletBuffers {
+ kNbits = 6 // bits to store number of clusters
+ ,kMask = 0x3f // bit mask
+ ,kNtb = 31 // max clusters/pad row
+ ,kNclusters = 2*kNtb // max number of clusters/tracklet
+ ,kNdEdxSlices= 8 // dEdx slices allocated in reconstruction
+ };
+
+ // 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
+ ,kChmbGood = BIT(16) // status of the detector from calibration view point
+ ,kCalib = BIT(17) // calibrated tracklet
+ ,kKink = BIT(18) // kink prolongation tracklet
+ ,kStandAlone = BIT(19) // tracklet build during stand alone track finding
+ ,kPrimary = BIT(20) // tracklet from a primary track candidate
+ };
+
+ enum ETRDtrackletError { // up to 8 bits
+ kAttachClFound = 0 // not enough clusters found
+ ,kAttachRowGap = 1 // found gap attached rows
+ ,kAttachRow = 2 // found 3 rows
+ ,kAttachMultipleCl= 3// multiple clusters attached to time bin
+ ,kAttachClAttach= 4 // not enough clusters attached
+ ,kFitCl = 5 // not enough clusters for fit
+ ,kFitFailedY = 6 // fit failed in XY plane failed
+ ,kFitFailedZ = 7 // fit in the QZ plane failed
+ };
+
+ AliTRDseedV1(Int_t det = -1);
+ ~AliTRDseedV1();
+ AliTRDseedV1(const AliTRDseedV1 &ref);
+ AliTRDseedV1& operator=(const AliTRDseedV1 &ref);
+
+ Bool_t AttachClusters(AliTRDtrackingChamber *const chamber, Bool_t tilt = kFALSE, Bool_t ChgPlus=kTRUE, Int_t ev=-1);
+ void Bootstrap(const AliTRDReconstructor *rec);
+ void Calibrate();
+ void CookdEdx(Int_t nslices);
+ void CookLabels();
+ Bool_t CookPID();
+ Bool_t Fit(UChar_t opt=0);
+ Bool_t FitRobust(Bool_t ChgPlus=kTRUE);
+ Bool_t Init(const AliTRDtrackV1 *track);
+ void Init(const AliRieman *fit);
+ Bool_t IsEqual(const TObject *inTracklet) const;
+ Bool_t IsCalibrated() const { return TestBit(kCalib);}
+ Bool_t IsChmbGood() const { return TestBit(kChmbGood);}
+ Bool_t IsOwner() const { return TestBit(kOwner);}
+ Bool_t IsKink() const { return TestBit(kKink);}
+ Bool_t IsPrimary() const { return TestBit(kPrimary);}
+ Bool_t HasError(ETRDtrackletError err) const
+ { return TESTBIT(fErrorMsg, err);}
+ 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 GetAnodeWireOffset(Float_t zt);
+ Float_t GetC(Int_t typ=0) const { return fC[typ]; }
+ Float_t GetCharge(Bool_t useOutliers=kFALSE) const;
+ Float_t GetChi2() const { return fChi2; }
+ inline Float_t GetChi2Z() const;
+ inline Float_t GetChi2Y() const;
+ inline Float_t GetChi2Phi() const;
+ 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, 7*sizeof(Double_t));}
+ static Int_t GetCovSqrt(const Double_t * const c, Double_t *d);
+ static Double_t GetCovInv(const Double_t * const c, Double_t *d);
+ UChar_t GetErrorMsg() const { return fErrorMsg;}
+ Float_t GetdX() const { return fdX;}
+ const Float_t* GetdEdx() const { return &fdEdx[0];}
+ Float_t GetQperTB(Int_t tb) const;
+ Float_t GetdQdl() const;
+ Float_t GetdQdl(Int_t ic, Float_t *dx=NULL) const;
+ Float_t GetdYdX() const { return fYfit[1];}
+ Float_t GetdZdX() const { return fZfit[1];}
+ Int_t GetdY() const { return Int_t(GetY()/0.014);}
+ Int_t GetDetector() const { return fDet;}
+ Int_t GetChargeGaps(Float_t sz[kNtb], Float_t pos[kNtb], Int_t ntb[kNtb]) const;
+ 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 ? NULL: fClusters[i];}
+ Bool_t GetEstimatedCrossPoint(Float_t &x, Float_t &z) const;
+ 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];}
+ Float_t GetMomentum(Float_t *err = NULL) const;
+ Int_t GetN() const { return (Int_t)fN&kMask;}
+ Int_t GetN2() const { return GetN();}
+ Int_t GetNUsed() const { return Int_t((fN>>kNbits)&kMask);}
+ Int_t GetNShared() const { return Int_t(((fN>>kNbits)>>kNbits)&kMask);}
+ Int_t GetTBoccupancy() const;
+ Int_t GetTBcross() const;
+ 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);
+ Float_t GetPt() const { return fPt; }
+ 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]/TMath::Sqrt(1+fYref[1]*fYref[1]);}
+ Float_t GetTilt() const { return fPad[2];}
+ UInt_t GetTrackletWord() const { return 0;}
+ UShort_t GetVolumeId() const;
+ 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(Option_t *opt="");
+
+ void SetC(Float_t c, Int_t typ=0) { fC[typ] = c;}
+ void SetChmbGood(Bool_t k = kTRUE){ SetBit(kChmbGood, k);}
+ void SetChi2(Float_t chi2) { fChi2 = chi2;}
+ inline void SetCovRef(const Double_t *cov);
+ void SetErrorMsg(ETRDtrackletError err) { SETBIT(fErrorMsg, err);}
+ 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 = kTRUE){ SetBit(kKink, k);}
+ void SetPrimary(Bool_t k = kTRUE){ SetBit(kPrimary, k);}
+ void SetStandAlone(Bool_t st) { SetBit(kStandAlone, st); }
+ void SetPt(Double_t pt) { fPt = pt;}
+ void SetOwner();
+ void SetPadPlane(AliTRDpadPlane * const p);
+ 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) {fkReconstructor = 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);
+ inline void Swap(Int_t &n1, Int_t &n2) const;
+ inline void Swap(Double_t &d1, Double_t &d2) const;