X-Git-Url: http://git.uio.no/git/?a=blobdiff_plain;ds=sidebyside;f=TPC%2FAliTPCtrack.h;h=472830825c4dda65440765ba1660b2e42c1bc047;hb=5773defdd4c0489838c2eb7bcfaadca83da2a390;hp=20ef346160bc8aa0e5eedd1dbdf7ed88b1a77be8;hpb=77e5846872ce6c4d2b89bc537bbaec65aec591af;p=u%2Fmrichter%2FAliRoot.git diff --git a/TPC/AliTPCtrack.h b/TPC/AliTPCtrack.h index 20ef346160b..472830825c4 100644 --- a/TPC/AliTPCtrack.h +++ b/TPC/AliTPCtrack.h @@ -2,60 +2,55 @@ #define ALITPCTRACK_H /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * * See cxx source for full Copyright notice */ - /* $Id$ */ - - //------------------------------------------------------- // TPC Track Class // // Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch -//------------------------------------------------------- - -/***************************************************************************** - * December 18, 2000 * - * Internal view of the TPC track parametrisation as well as the order of * - * track parameters are subject for possible changes ! * - * Use GetExternalParameters() and GetExternalCovariance() to access TPC * - * track information regardless of its internal representation. * - * This formation is now fixed in the following way: * - * external param0: local Y-coordinate of a track (cm) * - * external param1: local Z-coordinate of a track (cm) * - * external param2: local sine of the track momentum azimuth angle * - * external param3: tangent of the track momentum dip angle * - * external param4: 1/pt (1/(GeV/c)) * - *****************************************************************************/ - +// +// December 18, 2000 +// Internal view of the TPC track parametrisation as well as the order of +// track parameters are subject for possible changes ! +// Use GetExternalParameters() and GetExternalCovariance() to access TPC +// track information regardless of its internal representation. +// This formation is now fixed in the following way: +// external param0: local Y-coordinate of a track (cm) +// external param1: local Z-coordinate of a track (cm) +// external param2: local sine of the track momentum azimuth angle +// external param3: tangent of the track momentum dip angle +// external param4: 1/pt (1/(GeV/c)) +// #include #include #include "AliTPCreco.h" - -class AliTPCClustersArray; -class AliTPCcluster; +#include "AliExternalTrackParam.h" +class AliESDtrack; //_____________________________________________________________________________ class AliTPCtrack : public AliKalmanTrack { public: - AliTPCtrack():AliKalmanTrack(){} + AliTPCtrack(); AliTPCtrack(UInt_t index, const Double_t xx[5], const Double_t cc[15], Double_t xr, Double_t alpha); - AliTPCtrack(const AliKalmanTrack& t, Double_t alpha); + AliTPCtrack(const AliESDtrack& t); AliTPCtrack(const AliTPCtrack& t); + virtual ~AliTPCtrack() {} Int_t PropagateToVertex(Double_t x0=36.66,Double_t rho=1.2e-3); Int_t Rotate(Double_t angle); void SetdEdx(Double_t dedx) {fdEdx=dedx;} + Double_t GetYat(Double_t x) const ; Double_t GetX() const {return fX;} Double_t GetAlpha() const {return fAlpha;} Double_t GetdEdx() const {return fdEdx;} + Double_t GetPIDsignal() const {return GetdEdx();} Double_t GetY() const {return fP0;} Double_t GetZ() const {return fP1;} - Double_t GetSnp() const {return fX*fP4 - fP2;} - Double_t - Get1Pt() const { return (1e-9*TMath::Abs(fP4)/fP4 + fP4)*GetConvConst(); } + Double_t GetSnp() const {return fX*fP4 - fP2;} + Double_t Get1Pt() const; Double_t GetTgl() const {return fP3;} Double_t GetSigmaY2() const {return fC00;} @@ -68,7 +63,7 @@ public: Double_t Px() const {return TMath::Cos(Phi())/TMath::Abs(Get1Pt());} Double_t Py() const {return TMath::Sin(Phi())/TMath::Abs(Get1Pt());} Double_t Pz() const {return GetTgl()/TMath::Abs(Get1Pt());} - Double_t Pt() const {return 1./Get1Pt();} + Double_t Pt() const {return 1./TMath::Abs(Get1Pt());} Double_t P() const {return TMath::Sqrt(Pt()*Pt()+Pz()*Pz());} Int_t Compare(const TObject *o) const; @@ -76,6 +71,11 @@ public: void GetExternalParameters(Double_t& xr, Double_t x[5]) const ; void GetExternalCovariance(Double_t cov[15]) const ; + // [SR, 01.04.2003] + Int_t GetNumber() const {return fNumber;} + void SetNumber(Int_t n) {fNumber = n;} + // + Int_t GetClusterIndex(Int_t i) const {return fIndex[i];} //******** To be removed next release !!! ************** @@ -87,15 +87,33 @@ public: cc[3 ]=fC20; cc[4 ]=fC21; cc[5 ]=fC22; cc[6 ]=fC40; cc[7 ]=fC41; cc[8 ]=fC42; cc[9 ]=fC44; cc[10]=fC30; cc[11]=fC31; cc[12]=fC32; cc[13]=fC43; cc[14]=fC33; - } + } //****************************************************** virtual Double_t GetPredictedChi2(const AliCluster *cluster) const; Int_t PropagateTo(Double_t xr,Double_t x0=28.94,Double_t rho=0.9e-3); Int_t Update(const AliCluster* c, Double_t chi2, UInt_t i); void ResetCovariance(); - + void ResetClusters() {SetNumberOfClusters(0); SetChi2(0.);} + void UpdatePoints();//update points + Float_t* GetPoints() {return fPoints;} + // + // TClonesArray * fHelixIn; //array of helixes + //TClonesArray * fHelixOut; //array of helixes + // + Float_t Density(Int_t row0, Int_t row1); //calculate cluster density + Float_t Density2(Int_t row0, Int_t row1); //calculate cluster density + Double_t GetZat0() const; + Double_t GetD(Double_t x=0, Double_t y=0) const; + AliExternalTrackParam & GetReference(){ return fReference;} + void UpdateReference(){ new (&fReference) AliExternalTrackParam(*this);} + Int_t GetKinkIndex(Int_t i) const{ return fKinkIndexes[i];} + Int_t* GetKinkIndexes() { return fKinkIndexes;} + Int_t GetV0Index(Int_t i) const{ return fV0Indexes[i];} + Int_t* GetV0Indexes() { return fV0Indexes;} protected: + void GetXYZ(Float_t r[3]) const; + Double_t fX; // X-coordinate of this track (reference plane) Double_t fAlpha; // Rotation angle the local (TPC sector) // coordinate system and the global ALICE one. @@ -113,21 +131,46 @@ protected: Double_t fC20, fC21, fC22; // of the Double_t fC30, fC31, fC32, fC33; // track Double_t fC40, fC41, fC42, fC43, fC44; // parameters - - UInt_t fIndex[kMaxRow]; // indices of associated clusters - ClassDef(AliTPCtrack,1) // Time Projection Chamber reconstructed tracks + Int_t fIndex[kMaxRow]; // indices of associated clusters + Float_t fPoints[4]; //first, max dens row end points of the track and max density + //[SR, 01.04.2003] + Int_t fNumber; // magic number used for number of clusters + // MI addition + Float_t fSdEdx; // sigma of dedx + // + Int_t fNFoundable; //number of foundable clusters - dead zone taken to the account + Bool_t fBConstrain; // indicate seeding with vertex constrain + Int_t fLastPoint; // last cluster position + Int_t fFirstPoint; // first cluster position + Int_t fRemoval; // removal factor + Int_t fTrackType; // track type - 0 - normal - 1 - kink - 2 -V0 3- double found + Int_t fLab2; // index of corresponding track (kink, V0, double) + Int_t fNShared; // number of shared points + AliExternalTrackParam fReference; // track parameters at the middle of the chamber + Float_t fKinkPoint[12]; //radius, of kink, dfi and dtheta + Int_t fKinkIndexes[3]; // kink indexes - minus = mother + daughter + Int_t fV0Indexes[3]; // kink indexes - minus = mother + daughter + + ClassDef(AliTPCtrack,2) // Time Projection Chamber reconstructed tracks }; inline void AliTPCtrack::GetExternalParameters(Double_t& xr, Double_t x[5]) const { - //--------------------------------------------------------------------- // This function return external TPC track representation + xr=fX; + x[0]=GetY(); x[1]=GetZ(); x[2]=GetSnp(); x[3]=GetTgl(); + x[4]=(TMath::Sign(1e-9,fP4) + fP4)*GetLocalConvConst(); +} + +inline void AliTPCtrack::GetXYZ(Float_t r[3]) const { + //--------------------------------------------------------------------- + // Returns the position of the track in the global coord. system //--------------------------------------------------------------------- - xr=fX; - x[0]=GetY(); x[1]=GetZ(); x[2]=GetSnp(); x[3]=GetTgl(); x[4]=Get1Pt(); + Double_t cs=TMath::Cos(fAlpha), sn=TMath::Sin(fAlpha); + r[0]=fX*cs - fP0*sn; r[1]=fX*sn + fP0*cs; r[2]=fP1; } -#endif +#endif