//
// 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))
+// The track parameterization is fixed in the following way:
+// param0: local Y-coordinate of a track (cm)
+// param1: local Z-coordinate of a track (cm)
+// param2: local sine of the track momentum azimuth angle
+// param3: tangent of the track momentum dip angle
+// param4: 1/pt (1/(GeV/c))
//
+//-------------------------------------------------------
+
#include <AliKalmanTrack.h>
#include <TMath.h>
#include "AliTPCreco.h"
#include "AliExternalTrackParam.h"
-class AliBarrelTrack;
class AliESDtrack;
+class AliESDVertex;
//_____________________________________________________________________________
class AliTPCtrack : public AliKalmanTrack {
public:
AliTPCtrack();
- AliTPCtrack(UInt_t index, const Double_t xx[5],
- const Double_t cc[15], Double_t xr, Double_t alpha);
+ AliTPCtrack(Double_t x, Double_t alpha, const Double_t p[5],
+ const Double_t cov[15], Int_t index);
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 GetTgl() const {return fP3;}
-
- Double_t GetSigmaY2() const {return fC00;}
- Double_t GetSigmaZ2() const {return fC11;}
-
-// Some methods useful for users. Implementation is not
-// optimized for speed but for minimal maintanance effort
- Double_t Phi() const;
- Double_t Theta() const {return TMath::Pi()/2.-TMath::ATan(GetTgl());}
- 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./TMath::Abs(Get1Pt());}
- Double_t P() const {return TMath::Sqrt(Pt()*Pt()+Pz()*Pz());}
Int_t Compare(const TObject *o) const;
- void GetExternalParameters(Double_t& xr, Double_t x[5]) const ;
- void GetExternalCovariance(Double_t cov[15]) const ;
-
- // [SR, 01.04.2003]
-
- void GetBarrelTrack(AliBarrelTrack *track)const;
-
- void ResetNWrong() {fNWrong = 0;}
- void ResetNRotation() {fNRotation = 0;}
-
- Int_t GetNWrong() const {return fNWrong;}
- Int_t GetNRotation() const {return fNRotation;}
-
- Int_t GetNumber() const {return fNumber;}
- void SetNumber(Int_t n) {fNumber = n;}
- //
+ void SetdEdx(Double_t dedx) {fdEdx=dedx;}
+ Double_t GetdEdx() const {return fdEdx;}
+ Double_t GetPIDsignal() const {return GetdEdx();}
Int_t GetClusterIndex(Int_t i) const {return fIndex[i];}
+ void SetClusterIndex(Int_t i, Int_t idx) {fIndex[i]=idx;}
-//******** To be removed next release !!! **************
- Double_t GetEta() const {return fP2;}
- Double_t GetC() const {return fP4;}
- void GetCovariance(Double_t cc[15]) const {
- cc[0 ]=fC00;
- cc[1 ]=fC10; cc[2 ]=fC11;
- 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;
- }
-//******************************************************
+ Double_t GetC() const {return AliExternalTrackParam::GetC(GetBz());}
- 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();
+ Double_t GetPredictedChi2(const AliCluster *cluster) const;
+ Bool_t PropagateTo(Double_t xr, Double_t rho=0.9e-3, Double_t x0=28.94);
+ Bool_t Update(const AliCluster *c, Double_t chi2, Int_t i);
+ Bool_t Rotate(Double_t alpha) {
+ return AliExternalTrackParam::Rotate(GetAlpha()+alpha);
+ }
+
+ Bool_t PropagateToVertex(const AliESDVertex *v,
+ Double_t rho=1.2e-3, Double_t x0=36.66);
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;
+ Double_t GetD(Double_t x=0, Double_t y=0) const {
+ return AliExternalTrackParam::GetD(x,y,GetBz());
+ }
AliExternalTrackParam & GetReference(){ return fReference;}
void UpdateReference(){ new (&fReference) AliExternalTrackParam(*this);}
- Int_t GetKinkIndex(Int_t i) const{ return fKinkIndexes[i];}
+ Int_t GetKinkIndex(Int_t i) const{ return fKinkIndexes[i];}
Int_t* GetKinkIndexes() { return fKinkIndexes;}
-protected:
- 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.
+ Int_t GetV0Index(Int_t i) const{ return fV0Indexes[i];}
+ Int_t* GetV0Indexes() { return fV0Indexes;}
+
+ void SetFirstPoint(Int_t f) {fFirstPoint=f;}
+ void SetLastPoint(Int_t f) {fLastPoint=f;}
+ void SetRemoval(Int_t f) {fRemoval=f;}
+ void SetLab2(Int_t f) {fLab2=f;}
+ void SetKinkIndex(Int_t i, Int_t idx) {fKinkIndexes[i]=idx;}
+ void SetBConstrain(Bool_t b) {fBConstrain=b;}
+ void SetNFoundable(Int_t n) {fNFoundable=n;}
+ void SetNShared(Int_t s) {fNShared=s;}
+
+ Int_t GetFirstPoint() const {return fFirstPoint;}
+ Int_t GetLastPoint() const {return fLastPoint;}
+ Int_t GetRemoval() const {return fRemoval;}
+ Int_t GetLab2() const {return fLab2;}
+ Bool_t GetBConstrain() const {return fBConstrain;}
+ Int_t GetNShared() const {return fNShared;}
+ Int_t GetNFoundable() const {return fNFoundable;}
+protected:
+ Double_t GetBz() const;
Double_t fdEdx; // dE/dx
- Double_t fP0; // Y-coordinate of a track
- Double_t fP1; // Z-coordinate of a track
- Double_t fP2; // C*x0
- Double_t fP3; // tangent of the track momentum dip angle
- Double_t fP4; // track curvature
-
- Double_t fC00; // covariance
- Double_t fC10, fC11; // matrix
- Double_t fC20, fC21, fC22; // of the
- Double_t fC30, fC31, fC32, fC33; // track
- Double_t fC40, fC41, fC42, fC43, fC44; // parameters
-
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 fNWrong; // number of wrong clusters
- Int_t fNRotation; // number of rotations
- Int_t fNumber; // magic number used for number of clusters
// MI addition
Float_t fSdEdx; // sigma of dedx
//
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
- ClassDef(AliTPCtrack,1) // Time Projection Chamber reconstructed tracks
-};
+ Int_t fV0Indexes[3]; // kink indexes - minus = mother + daughter
-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]=Get1Pt();
-}
+ ClassDef(AliTPCtrack,3) // Time Projection Chamber reconstructed tracks
+};
#endif
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff