/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
* See cxx source for full Copyright notice */
-#include <AliKalmanTrack.h>
-#include <TMath.h>
+/* $Id$ */
+
+///////////////////////////////////////////////////////////////////////////////
+// //
+// Represents a reconstructed TRD track //
+// //
+///////////////////////////////////////////////////////////////////////////////
-#include "AliTRDgeometry.h"
#include "AliESDtrack.h"
-#include "TVector2.h"
+#include "AliKalmanTrack.h"
-class AliTRDcluster;
-class AliTPCtrack;
-class AliESDtrack;
+#include "AliTRDtracklet.h"
-const unsigned kMAXCLUSTERSPERTRACK=210;
+#ifndef ALITRDSEEDV1_H
+#include "AliTRDseedV1.h"
+#endif
+class AliTrackReference;
+class AliTRDcluster;
class AliTRDtrack : public AliKalmanTrack {
- //////////////////////////////////////////////////////////////////
- // Represents a reconstructed TRD track //
- //////////////////////////////////////////////////////////////////
-
- friend class AliTRDtracker;
-
-public:
-
- AliTRDtrack():AliKalmanTrack(){fBackupTrack=0;}
- AliTRDtrack(const AliTRDcluster *c, UInt_t index, const Double_t xx[5],
- const Double_t cc[15], Double_t xr, Double_t alpha);
- AliTRDtrack(const AliTRDtrack& t);
- AliTRDtrack(const AliKalmanTrack& t, Double_t alpha);
- AliTRDtrack(const AliESDtrack& t);
- ~AliTRDtrack();
- Int_t Compare(const TObject *o) const;
- void CookdEdx(Double_t low=0.05, Double_t up=0.55);
- Float_t StatusForTOF();
- Double_t GetAlpha() const {return fAlpha;}
- Int_t GetSector() const {
- //if (fabs(fAlpha) < AliTRDgeometry::GetAlpha()/2) return 0;
- return Int_t(TVector2::Phi_0_2pi(fAlpha)/AliTRDgeometry::GetAlpha())%AliTRDgeometry::kNsect;}
-
- Double_t GetC() const {return fC;}
- Int_t GetClusterIndex(Int_t i) const {return fIndex[i];}
- Float_t GetClusterdQdl(Int_t i) const {return fdQdl[i];}
-
- void GetCovariance(Double_t cov[15]) const;
- Double_t GetdEdx() const {return fdEdx;}
- Double_t GetPIDsignal() const {return GetdEdx();}
- Float_t GetPIDsignals(Int_t i) const {return fdEdxPlane[i];}
- Int_t GetPIDTimBin(Int_t i) const {return fTimBinPlane[i];}
- Double_t GetEta() const {return fE;}
-
- void GetExternalCovariance(Double_t cov[15]) const ;
- void GetExternalParameters(Double_t& xr, Double_t x[5]) const ;
-
- Double_t GetLikelihoodElectron() const { return fLhElectron; };
-
- Double_t Get1Pt() const {return (1e-9*TMath::Abs(fC)/fC + fC)*GetConvConst(); }
- Double_t GetP() const {
- return TMath::Abs(GetPt())*sqrt(1.+GetTgl()*GetTgl());
- }
- Double_t GetPredictedChi2(const AliTRDcluster *c, Double_t h01) const ;
- Double_t GetPt() const {return 1./Get1Pt();}
- void GetPxPyPz(Double_t &px, Double_t &py, Double_t &pz) const ;
- void GetGlobalXYZ(Double_t &x, Double_t &y, Double_t &z) const ;
- Int_t GetSeedLabel() const { return fSeedLab; }
- Double_t GetSigmaC2() const {return fCcc;}
- Double_t GetSigmaTgl2() const {return fCtt;}
- Double_t GetSigmaY2() const {return fCyy;}
- Double_t GetSigmaZ2() const {return fCzz;}
- Double_t GetSnp() const {return fX*fC - fE;}
- Double_t GetTgl() const {return fT;}
- Double_t GetX() const {return fX;}
- Double_t GetY() const {return fY;}
- Double_t GetZ() const {return fZ;}
- UInt_t * GetBackupIndexes() {return fIndexBackup;}
- UInt_t * GetIndexes() {return fIndex;}
- //-----------------------------------------------------------------
- // This function calculates the Y-coordinate of a track at the plane x=xk.
- // Needed for matching with the TOF (I.Belikov)
- Double_t GetYat(Double_t xk) const {
- Double_t c1=fC*fX - fE, r1=TMath::Sqrt(1.- c1*c1);
- Double_t c2=fC*xk - fE, r2=TMath::Sqrt(1.- c2*c2);
- return fY + (xk-fX)*(c1+c2)/(r1+r2);
- }
- //-----------------------------------------------------------------
- Int_t GetProlongation(Double_t xk, Double_t &y, Double_t &z);
-
- void SetStop(Bool_t stop) {fStopped=stop;}
- Bool_t GetStop() const {return fStopped;}
-
- Int_t PropagateTo(Double_t xr, Double_t x0=8.72, Double_t rho=5.86e-3);
- void ResetCovariance();
- void ResetCovariance(Float_t mult);
- void ResetClusters() { SetChi2(0.); SetNumberOfClusters(0); }
- Int_t Rotate(Double_t angle);
-
- void SetdEdx(Float_t dedx) {fdEdx=dedx;}
- void SetPIDsignals(Float_t dedx, Int_t i) {fdEdxPlane[i]=dedx;}
- void SetPIDTimBin(Int_t timbin, Int_t i) {fTimBinPlane[i]=timbin;}
- void SetLikelihoodElectron(Float_t l) { fLhElectron = l; };
-
- void SetSampledEdx(Float_t q, Int_t i) {
- Double_t s=GetSnp(), t=GetTgl();
- q*= TMath::Sqrt((1-s*s)/(1+t*t));
- fdQdl[i]=q;
- }
- void SetSampledEdx(Float_t q) {
- Double_t s=GetSnp(), t=GetTgl();
- q*= TMath::Sqrt((1-s*s)/(1+t*t));
- fdQdl[fNdedx]=q;
- fNdedx++;
- }
-
- void SetSeedLabel(Int_t lab) { fSeedLab=lab; }
-
- Int_t Update(const AliTRDcluster* c, Double_t chi2, UInt_t i,
- Double_t h01);
- Int_t UpdateMI(const AliTRDcluster* c, Double_t chi2, UInt_t i,
- Double_t h01, Int_t plane);
-
- void AddNWrong() {fNWrong++;}
-
- Int_t GetNWrong() const {return fNWrong;}
- Int_t GetNRotate() const {return fNRotate;}
- Int_t GetNCross() const {return fNCross;}
- void IncCross() {fNCross++; if (fBackupTrack) fBackupTrack->IncCross();}
- AliTRDtrack * GetBackupTrack(){return fBackupTrack;}
- void MakeBackupTrack();
-
-protected:
-
- Int_t fSeedLab; // track label taken from seeding
- Float_t fdEdx; // dE/dx
- Float_t fdEdxPlane[kNPlane]; // dE/dx from all 6 planes
- Int_t fTimBinPlane[kNPlane]; // time bin of Max cluster from all 6 planes
-
- Double_t fAlpha; // rotation angle
- Double_t fX; // running local X-coordinate of the track (time bin)
- Bool_t fStopped; // track stop indication
-
- Double_t fY; // Y-coordinate of the track
- Double_t fZ; // Z-coordinate of the track
- Double_t fE; // C*x0
- Double_t fT; // tangent of the track momentum dip angle
- Double_t fC; // track curvature
-
- Double_t fCyy; // covariance
- Double_t fCzy, fCzz; // matrix
- Double_t fCey, fCez, fCee; // of the
- Double_t fCty, fCtz, fCte, fCtt; // track
- Double_t fCcy, fCcz, fCce, fCct, fCcc; // parameters
+ public:
+
+ enum { kMAXCLUSTERSPERTRACK = 210 };
- UInt_t fIndex[kMAXCLUSTERSPERTRACK]; // global indexes of clusters
- UInt_t fIndexBackup[kMAXCLUSTERSPERTRACK]; // backup indexes of clusters - used in iterations
- Float_t fdQdl[kMAXCLUSTERSPERTRACK]; // cluster amplitudes corrected
- // for track angles
-
- Float_t fLhElectron; // Likelihood to be an electron
- Int_t fNWrong; // number of wrong clusters
- Int_t fNRotate; // number of rotation
- Int_t fNCross; // number of the cross materials
- Int_t fNExpected; // expected number of cluster
- Int_t fNLast; // number of clusters in last 2 layers
- Int_t fNExpectedLast; // number of expected clusters on last 2 layers
- Int_t fNdedx; // number of clusters for dEdx measurment
- Float_t fChi2Last; // chi2 in the last 2 layers
-
- AliTRDtrack * fBackupTrack; //! backup track
-
- ClassDef(AliTRDtrack,2) // TRD reconstructed tracks
+ enum { kNdet = 540
+ , kNstacks = 90
+ , kNplane = AliESDtrack::kTRDnPlanes
+ , kNcham = 5
+ , kNsect = 18
+ , kNslice = 3
+ , kNMLPslice = 8 };
+
+ enum AliTRDPIDMethod {
+ kNN = 0
+ , kLQ = 1 };
+
+ AliTRDtrack();
+ AliTRDtrack(/*const*/ AliTRDcluster *c, Int_t index
+ , const Double_t xx[5], const Double_t cc[15]
+ , Double_t xr, Double_t alpha);
+ AliTRDtrack(const AliTRDtrack &t/*, const Bool_t owner = kTRUE*/);
+ AliTRDtrack(const AliESDtrack &t);
+ virtual ~AliTRDtrack();
+ AliTRDtrack(const AliKalmanTrack &t, Double_t alpha);
+
+ void ResetClusters() { SetChi2(0.0);
+ SetNumberOfClusters(0); }
+ Int_t Compare(const TObject *o) const;
+ void AddNWrong() { fNWrong++; }
+ void IncCross() { fNCross++;
+ if (fBackupTrack)
+ fBackupTrack->IncCross(); }
+
+ Int_t GetSector() const;
+ Float_t GetClusterdQdl(Int_t i) const { return fdQdl[i]; }
+ Double_t GetdEdx() const { return fdEdx; }
+ Int_t GetNdedx() const { return fNdedx; }
+ Double_t GetPIDsignal() const { return GetdEdx(); }
+ Int_t GetClusterIndex(Int_t i) const { return fIndex[i]; }
+ Double_t GetC() const { return AliExternalTrackParam
+ ::GetC(GetBz()); }
+ Double_t GetPredictedChi2(const AliTRDcluster *c
+ , Double_t h01) const;
+ AliTRDPIDMethod GetPIDMethod() const { return fPIDmethod; }
+ Float_t GetPIDsignals(Int_t iPlane
+ , Int_t iSlice) const { return fdEdxPlane[iPlane][iSlice]; }
+ Int_t GetPIDTimBin(Int_t i) const { return fTimBinPlane[i]; }
+ Double_t GetLikelihoodElectron() const { return fLhElectron; }
+ Int_t GetSeedLabel() const { return fSeedLab; }
+ Int_t *GetBackupIndexes() { return fIndexBackup; }
+ Int_t *GetIndexes() { return fIndex; }
+ Int_t GetProlongation(Double_t xk
+ , Double_t &y
+ , Double_t &z);
+ Bool_t GetStop() const { return fStopped; }
+ Int_t GetNRotate() const { return fNRotate; }
+ Int_t GetNWrong() const { return fNWrong; }
+ Int_t GetNCross() const { return fNCross; }
+ Int_t GetNExpected() const { return fNExpected; }
+ Int_t GetNLast() const { return fNLast; }
+ Int_t GetNExpectedLast() const { return fNExpectedLast; }
+ AliTRDtracklet GetTracklets(Int_t i) const { return fTracklets[i]; }
+ Float_t GetBudget(Int_t i) const { return fBudget[i]; }
+ Float_t GetChi2Last() const { return fChi2Last; }
+ AliTRDtrack *GetBackupTrack() { return fBackupTrack; }
+ // dummy to bridge the function in AliTRDtrackV1
+ //Int_t GetNumberOfClusters() const { printf("AliTRDtrack::GetNumberOfClusters()\n");
+ // return AliKalmanTrack::GetNumberOfClusters(); }
+ inline virtual Int_t GetNumberOfTracklets() const;
+ virtual Int_t GetTrackletIndex(Int_t plane) const { return plane>=0 && plane<6
+ ? fTrackletIndex[plane] : -1; }
+
+
+ void SetdEdx(Double_t dedx) { fdEdx = dedx; }
+ void SetStop(Bool_t stop) { fStopped = stop; }
+ void SetPIDsignals(Float_t dedx
+ , Int_t iPlane
+ , Int_t iSlice) { fdEdxPlane[iPlane][iSlice] = dedx; }
+ void SetPIDTimBin(Int_t timbin, Int_t i) { fTimBinPlane[i] = timbin; }
+ void SetLikelihoodElectron(Float_t l) { fLhElectron = l; }
+ void SetSampledEdx(Float_t q, Int_t i);
+ void SetSampledEdx(Float_t q);
+ void SetSeedLabel(Int_t lab) { fSeedLab = lab; }
+ void SetNWrong(Int_t nwrong) { fNWrong = nwrong; }
+ void SetNCross(Int_t ncross) { fNCross = ncross; }
+ void SetNExpected(Int_t nexp) { fNExpected = nexp; }
+ void SetNLast(Int_t nlast) { fNLast = nlast; }
+ void SetNExpectedLast(Int_t nexp) { fNExpectedLast = nexp; }
+ void SetChi2Last(Float_t chi2) { fChi2Last = chi2; }
+ void SetTracklets(Int_t i, AliTRDtracklet t) { fTracklets[i] = t; }
+ void SetBudget(Int_t i, Float_t budget) { fBudget[i] = budget; }
+ void SetPIDMethod(AliTRDPIDMethod method) { fPIDmethod = method; }
+
+ void SetTrackSegmentDirMom(const Int_t plane);
+ void CookdEdx(Double_t low = 0.05, Double_t up = 0.7);
+ void CookdEdxTimBin(const Int_t tid);
+ Bool_t CookPID(Int_t &pidQuality);
+ void SetCluster(AliTRDcluster* cl
+ , Int_t index = -1) { fClusters[(index == -1)
+ ? GetNumberOfClusters()-1
+ : index] = cl; }
+ AliTRDcluster* GetCluster(Int_t layer) const { return (layer >= 0 &&
+ layer < GetNumberOfClusters())
+ ? fClusters[layer]
+ : 0x0; }
+ Float_t GetMomentumPlane(Int_t plane) const { return (plane >= 0 &&
+ plane < kNplane)
+ ? fMom[plane]
+ : 0.0; }
+ const Double_t* GetPID() const { return fPID; }
+ Float_t GetSnpPlane(Int_t plane) const { return (plane >= 0 &&
+ plane < kNplane)
+ ? fSnp[plane]
+ : 0.0; }
+ Float_t GetTglPlane(Int_t plane) const { return (plane >= 0 &&
+ plane < kNplane)
+ ? fTgl[plane]
+ : 0.0; }
+ Float_t GetTrackLengthPlane(Int_t plane) const;
+
+ void MakeBackupTrack();
+ Bool_t PropagateTo(Double_t xr, Double_t x0 = 8.72, Double_t rho = 5.86e-3);
+ Int_t PropagateToR(Double_t xr, Double_t step);
+ Int_t PropagateToX(Double_t xr, Double_t step);
+ Bool_t Rotate(Double_t angle, Bool_t absolute = kFALSE);
+ Float_t StatusForTOF();
+ Bool_t Update(const AliTRDcluster *c, Double_t chi2, Int_t index, Double_t h01);
+ Bool_t Update(const AliTRDtracklet &tracklet, Double_t chi2, Int_t index);
+ Int_t UpdateMI(/*const */AliTRDcluster *c, Double_t chi2
+ , Int_t index, Double_t h01
+ , Int_t plane, Int_t tid = 0);
+
+ protected:
+
+ AliTRDtrack &operator=(const AliTRDtrack &t);
+
+ void CookdEdxNN(Float_t *dedx);
+ Double_t GetBz() const;
+ Bool_t Update(const AliCluster */*c*/, Double_t /*chi2*/, Int_t /*idx*/) { return 0; }
+ Double_t GetPredictedChi2(const AliCluster* /*c*/) const { return 0.0; }
+
+ protected:
+
+ Int_t fSeedLab; // Track label taken from seeding
+ Float_t fdEdx; // dE/dx (truncated mean)
+ Float_t fDE; // Integrated delta energy
+ Float_t fdEdxPlane[kNplane][kNslice]; // dE/dx from all 6 planes in 3 slices each
+ Int_t fTimBinPlane[kNplane]; // Time bin of Max cluster from all 6 planes
+ UChar_t fPIDquality; // No of planes used for PID calculation
+ Double_t fPID[AliPID::kSPECIES]; // PID probabilities
+ Float_t fMom[kNplane]; // Track momentum at chamber entrance
+ Float_t fSnp[kNplane]; // Track direction
+ Float_t fTgl[kNplane]; // Track direction
+ AliTRDcluster *fClusters[kMAXCLUSTERSPERTRACK]; // List of assigned clusters
+ Bool_t fClusterOwner; // Indicates the track is owner of cluster
+ AliTRDPIDMethod fPIDmethod; // Switch between different PID methods
+ Bool_t fStopped; // Track stop indication
+ Int_t fIndex[kMAXCLUSTERSPERTRACK]; // Global indexes of clusters
+ Int_t fIndexBackup[kMAXCLUSTERSPERTRACK]; // Backup indexes of clusters - used in iterations
+ Float_t fdQdl[kMAXCLUSTERSPERTRACK]; // Cluster amplitudes corrected for track angles
+
+ Float_t fLhElectron; // Likelihood to be an electron
+ Int_t fNWrong; // Number of wrong clusters
+ Int_t fNRotate; // Number of rotation
+ Int_t fNCross; // Number of the cross materials
+ Int_t fNExpected; // Expected number of cluster
+ Int_t fNLast; // Number of clusters in last 2 layers
+ Int_t fNExpectedLast; // Number of expected clusters on last 2 layers
+ Int_t fNdedx; // Number of clusters for dEdx measurment
+ Float_t fChi2Last; // Chi2 in the last 2 layers
+ AliTRDtracklet fTracklets[6]; // Tracklets
+ Float_t fBudget[3]; // Integrated material budget
+ AliTRDtrack *fBackupTrack; //! Backup track
+
+ Int_t fTrackletIndex[6]; // Tracklets index in the tracker list
+ AliTRDseedV1 fTracklet[6]; // Tracklets array defining the track
+
+ ClassDef(AliTRDtrack,9) // TRD reconstructed tracks
};
+//___________________________________________________________
+inline Int_t AliTRDtrack::GetNumberOfTracklets() const
+{
+ Int_t ntrklt = 0;
+ for(int ip=0; ip<6; ip++) if(fTrackletIndex[ip] >= 0) ntrklt++;
+ return ntrklt;
+}
+
#endif
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