/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
* See cxx source for full Copyright notice */
+/* $Id$ */
+
//-------------------------------------------------------------------------
// Class AliKalmanTrack
-//
-// Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch
+// fixed the interface for the derived reconstructed track classes
+// Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch
//-------------------------------------------------------------------------
#include <TObject.h>
+#include "AliLog.h"
+#include "AliPID.h"
+#include "AliMagF.h"
class AliCluster;
class AliKalmanTrack : public TObject {
public:
- AliKalmanTrack() {fN=0; fChi2=0; fLab=-3141593;}
- AliKalmanTrack(const AliKalmanTrack& t);
- virtual ~AliKalmanTrack() {}
- Int_t Compare(const TObject *o) const;
- void SetLabel(Int_t lab) {fLab=lab;}
-
- Double_t GetPredictedChi2(const AliCluster *cluster) const;
- Bool_t IsSortable() const {return kTRUE;}
- Int_t GetLabel() const {return fLab;}
- void GetCovariance(Double_t cov[15]) const;
- Double_t GetChi2() const {return fChi2;}
- Int_t GetNumberOfClusters() const {return fN;}
-
- virtual Double_t GetPt() const=0;
- virtual Double_t GetP() const=0;
- virtual void GetPxPyPz(Double_t &px, Double_t &py, Double_t &pz) const=0;
- virtual Int_t PropagateTo(Double_t xr,Double_t x0,Double_t rho,Double_t pm)=0;
- virtual void Update(const AliCluster* c, Double_t chi2, UInt_t i)=0;
-
-protected:
- Int_t fLab; // track label
+ AliKalmanTrack();
+ AliKalmanTrack(const AliKalmanTrack &t);
+
+ virtual ~AliKalmanTrack(){};
+ void SetLabel(Int_t lab) {fLab=lab;}
+ void SetFakeRatio(Float_t ratio) {fFakeRatio=ratio;}
+
+ Bool_t IsSortable() const {return kTRUE;}
+ Int_t GetLabel() const {return fLab;}
+ Float_t GetFakeRatio() const {return fFakeRatio;}
+ Double_t GetChi2() const {return fChi2;}
+ Double_t GetMass() const {return fMass;}
+ Int_t GetNumberOfClusters() const {return fN;}
+ virtual Int_t GetClusterIndex(Int_t) const { //reserved for AliTracker
+ AliWarning("Method must be overloaded !\n");
+ return 0;
+ }
+ virtual Double_t GetPIDsignal() const {
+ AliWarning("Method must be overloaded !\n");
+ return 0.;
+ }
+
+ virtual Double_t GetDCA(const AliKalmanTrack *p,Double_t &xthis,Double_t &xp) const;
+ virtual
+ Double_t PropagateToDCA(AliKalmanTrack *p, Double_t d=0., Double_t x0=0.);
+ virtual Double_t GetAlpha() const {
+ AliWarning("Method must be overloaded !\n");
+ return 0.;
+ }
+ virtual Double_t GetSigmaY2() const {
+ AliWarning("Method must be overloaded !\n");
+ return 0.;
+ }
+ virtual Double_t GetSigmaZ2() const {
+ AliWarning("Method must be overloaded !\n");
+ return 0.;
+ }
+
+ virtual Int_t Compare(const TObject *) const {return 0;}
+
+ virtual void GetExternalParameters(Double_t&/*xr*/,Double_t/*x*/[5]) const=0;
+ virtual void GetExternalCovariance(Double_t /*cov*/[15]) const = 0;
+
+ virtual Double_t GetPredictedChi2(const AliCluster *) const = 0;
+ virtual Int_t PropagateTo(Double_t/*xr*/,Double_t/*x0*/,Double_t/*rho*/) = 0;
+ //virtual Int_t PropagateToVertex(Double_t /*d*/=0., Double_t /*x0*/=0.) = 0;
+ virtual Int_t Update(const AliCluster*, Double_t /*chi2*/, UInt_t) = 0;
+
+ static void SetFieldMap(const AliMagF *map) { fgkFieldMap=map; }
+ static const AliMagF *GetFieldMap() { return fgkFieldMap; }
+
+ static void SetUniformFieldTracking() {
+ if (fgkFieldMap==0) {
+ printf("AliKalmanTrack: Field map has not been set !\n");
+ exit(1);
+ }
+ fgConvConst=1000/0.299792458/(fgkFieldMap->SolenoidField()+1e-13);
+ }
+ static void SetNonuniformFieldTracking() { fgConvConst=0.; }
- Double_t fP0; // track parameter
- Double_t fP1; // track parameter
- Double_t fP2; // track parameter
- Double_t fP3; // track parameter
- Double_t fP4; // track parameter
+ static Double_t GetConvConst();
+ static Double_t MeanMaterialBudget(Double_t *start, Double_t *end, Double_t *mparam);
+
+ // Time integration (S.Radomski@gsi.de)
+ void StartTimeIntegral();
+ void SetIntegratedLength(Double_t l) {fIntegratedLength=l;}
+ void SetIntegratedTimes(const Double_t *times);
- 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
+ Bool_t IsStartedTimeIntegral() const {return fStartTimeIntegral;}
+ void AddTimeStep(Double_t length);
+ void GetIntegratedTimes(Double_t *times) const;
+ Double_t GetIntegratedTime(Int_t pdg) const;
+ Double_t GetIntegratedLength() const {return fIntegratedLength;}
+ void PrintTime() const;
+protected:
+ virtual void GetXYZ(Float_t r[3]) const = 0;
+ void SaveLocalConvConst();
+ Double_t GetLocalConvConst() const;
+
+ void External2Helix(Double_t helix[6]) const;
+
+ void SetChi2(Double_t chi2) {fChi2=chi2;}
+ void SetMass(Double_t mass) {fMass=mass;}
+ void SetNumberOfClusters(Int_t n) {fN=n;}
+
+ Int_t fLab; // track label
+ Float_t fFakeRatio; // fake ratio
Double_t fChi2; // total chi2 value for this track
- Short_t fN; // number of clusters
+ Double_t fMass; // mass hypothesis
+ Int_t fN; // number of associated clusters
+
+private:
+ static const AliMagF *fgkFieldMap;//pointer to the magnetic field map
+ static Double_t fgConvConst; //conversion "curvature(1/cm) -> pt(GeV/c)"
+ Double_t fLocalConvConst; //local conversion "curvature(1/cm) -> pt(GeV/c)"
- ClassDef(AliKalmanTrack,1) // Reconstructed track
+ // variables for time integration (S.Radomski@gsi.de)
+ Bool_t fStartTimeIntegral; // indicator wether integrate time
+ Double_t fIntegratedTime[AliPID::kSPECIES]; // integrated time
+ Double_t fIntegratedLength; // integrated length
+
+ ClassDef(AliKalmanTrack,4) // Reconstructed track
};
+inline Double_t AliKalmanTrack::GetConvConst() {
+//
+// For backward compatibility only !
+//
+ if (fgConvConst > 0 || fgConvConst < 0) return fgConvConst;
+ return 1000/0.299792458/(fgkFieldMap->SolenoidField()+1e-13);
+}
+
+inline void AliKalmanTrack::SaveLocalConvConst() {
+ //---------------------------------------------------------------------
+ // Saves local conversion constant "curvature (1/cm) -> pt (GeV/c)"
+ //---------------------------------------------------------------------
+ if (fgConvConst > 0 || fgConvConst < 0) return; //uniform field tracking
+ Float_t r[3]={0.,0.,0.}; GetXYZ(r);
+ Float_t b[3]; fgkFieldMap->Field(r,b);
+ fLocalConvConst=1000/0.299792458/(1e-13 - b[2]);
+}
+
+inline Double_t AliKalmanTrack::GetLocalConvConst() const {
+ //---------------------------------------------------------------------
+ // Returns conversion constant "curvature (1/cm) -> pt (GeV/c)"
+ //---------------------------------------------------------------------
+ if (fgConvConst > 0 || fgConvConst < 0) return fgConvConst; //uniform field tracking
+ return fLocalConvConst;
+}
+
#endif
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff