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[u/mrichter/AliRoot.git] / RALICE / AliTrack.h
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d88f97cc 1#ifndef ALITRACK_H
2#define ALITRACK_H
959fbac5 3
3da30618 4/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
5 * See cxx source for full Copyright notice */
6
f531a546 7// $Id$
3da30618 8
959fbac5 9
d88f97cc 10#include "TObject.h"
11#include "TObjArray.h"
f531a546 12#include "TArrayD.h"
d0a8ef71 13#include "TArrayI.h"
d88f97cc 14
959fbac5 15#include "AliSignal.h"
d88f97cc 16#include "AliBoost.h"
c72198f1 17#include "AliPositionObj.h"
a7dc0627 18#include "AliTimestamp.h"
d88f97cc 19
5f25234b 20class AliTrack : public TNamed,public Ali4Vector
d88f97cc 21{
22 public:
261c0caf 23 AliTrack(); // Default constructor
24 virtual ~AliTrack(); // Destructor
25 AliTrack(const AliTrack& t); // Copy constructor
26 virtual TObject* Clone(const char* name="") const; // Make a deep copy and provide its pointer
27 virtual void Reset(); // Reset all values to 0
28 void Set4Momentum(Ali4Vector& p); // Set track 4-momentum
29 void Set3Momentum(Ali3Vector& p); // Set track 3-momentum
959fbac5 30 void SetMass(Double_t m,Double_t dm=0); // Set particle mass and error
261c0caf 31 void SetMass(); // Set mass and error to the values of the hyp. with highest prob.
32 void SetCharge(Float_t q); // Set particle charge
1f241680 33 virtual void Data(TString f="car",TString u="rad"); // Print track information for frame f and ang units u
34 virtual void List(TString f="car",TString u="rad"); // Track and decay level 1 info for frame f and ang units u
35 virtual void ListAll(TString f="car",TString u="rad");// Track and all decay level info for frame f and ang units u
25eefd00 36 Ali3Vector Get3Momentum(Float_t scale=-1) const; // Provide track 3-momentum
37 Double_t GetMomentum(Float_t scale=-1); // Provide value of track 3-momentum
38 Double_t GetMass(Float_t scale=-1); // Provide particle mass
261c0caf 39 Float_t GetCharge() const; // Provide particle charge
25eefd00 40 Double_t GetEnergy(Float_t scale=-1); // Provide particle total energy
d88f97cc 41 void Decay(Double_t m1,Double_t m2,Double_t thcms,Double_t phicms); // Perform 2-body decay
261c0caf 42 Int_t GetNdecay() const; // Provide number of decay products
43 AliTrack* GetDecayTrack(Int_t j) const; // Access to decay produced track number j
44 void RemoveDecays(); // Remove all the decay products of this track
d0120ca2 45 void AddSignal(AliSignal& s,Int_t mode=0); // Relate an AliSignal to this track
46 void RemoveSignal(AliSignal& s,Int_t mode=1); // Remove related AliSignal from this track
47 void RemoveSignals(Int_t mode=1); // Remove all related AliSignals from this track
261c0caf 48 Int_t GetNsignals() const; // Provide number of related AliSignals
caa58e1a 49 Int_t GetNsignals(const char* classname) const; // Provide the number of selected signals
261c0caf 50 AliSignal* GetSignal(Int_t j) const; // Access to the related AliSignal number j
51 void SetBeginPoint(AliPosition& p); // Set the track begin-point
52 AliPosition* GetBeginPoint(); // Provide the track begin-point
53 void SetEndPoint(AliPosition& p); // Set the track end-point
54 AliPosition* GetEndPoint(); // Provide the track end-point
c5555bc0 55 void SetReferencePoint(AliPosition& p); // Set the track reference-point for the 3-momentum vector
56 AliPosition* GetReferencePoint(); // Provide the track reference-point for the 3-momentum vector
261c0caf 57 void AddTrackHypothesis(AliTrack& t); // Add track hypothesis
5f25234b 58 void AddTrackHypothesis(Double_t prob,Double_t m,Double_t dm=0); // Add track hypothesis with mass data
261c0caf 59 Int_t GetNhypotheses() const; // Provide number of track hypotheses
60 AliTrack* GetTrackHypothesis(Int_t j=0) const; // Provide the j-th track hypothesis
61 void RemoveTrackHypothesis(AliTrack& t);// Remove the specified track hypothesis
62 void RemoveTrackHypotheses(); // Remove all track hypotheses
25eefd00 63 Double_t GetPt(Float_t scale=-1); // Provide trans. momentum w.r.t. z-axis
64 Double_t GetPl(Float_t scale=-1); // Provide long. momentum w.r.t. z-axis
65 Double_t GetEt(Float_t scale=-1); // Provide trans. energy w.r.t. z-axis
66 Double_t GetEl(Float_t scale=-1); // Provide long. energy w.r.t. z-axis
67 Double_t GetMt(Float_t scale=-1); // Provide trans. mass w.r.t. z-axis
261c0caf 68 Double_t GetRapidity(); // Provide rapidity value w.r.t. z-axis
c72198f1 69 void SetImpactPoint(AliPosition& p,TString q); // Set the impact-point in plane "q=0"
70 AliPosition* GetImpactPoint(TString q); // Provide the impact-point in plane "q=0"
261c0caf 71 void SetId(Int_t id); // Set the user defined unique track identifier
72 Int_t GetId() const; // Provide the user defined unique track identifier
73 void SetClosestPoint(AliPosition& p); // Set position p as point of closest approach w.r.t. some reference
74 AliPosition* GetClosestPoint(); // Provide point of closest approach w.r.t. some reference
261c0caf 75 void SetParticleCode(Int_t code); // Set the user defined particle id code (e.g. the PDF convention)
76 Int_t GetParticleCode() const; // Provide the user defined particle id code
77 void SetParentTrack(AliTrack* t); // Set pointer to the parent track
78 AliTrack* GetParentTrack(); // Provide pointer to the parent track
79 void SetProb(Double_t prob); // Set the hypothesis probability for this track
80 Float_t GetProb() const; // Provide the hypothesis probability for this track
ea0b5b7f 81 void SetFitDetails(TObject* obj); // Enter the object containing the fit details
82 void SetFitDetails(TObject& obj) { SetFitDetails(&obj); }
83 TObject* GetFitDetails(); // Provide pointer to the object containing the fit details
a7dc0627 84 void SetTimestamp(AliTimestamp& t); // Set the track timestamp
85 AliTimestamp* GetTimestamp(); // Provide the track timestamp
86 void RemoveTimestamp(); // Remove timestamp from this track
25eefd00 87 Double_t GetDistance(AliPosition* p,Float_t scale=-1); // Provide distance to position p
88 Double_t GetDistance(AliPosition& p,Float_t scale=-1) { return GetDistance(&p,scale); }
89 Double_t GetDistance(AliTrack* t,Float_t scale=-1); // Provide distance to track t
90 Double_t GetDistance(AliTrack& t,Float_t scale=-1) { return GetDistance(&t,scale); }
91 void SetEscale(Float_t scale); // Set the scale of the energy-momentum units of the track
92 Float_t GetEscale() const; // Provide the scale of the energy-momentum units of the track
d88f97cc 93
94 protected:
c72198f1 95 void Init(); // Initialisation of pointers etc...
96 Float_t fQ; // The charge of the particle
c72198f1 97 TObjArray* fDecays; // The array of decay produced tracks
c72198f1 98 TObjArray* fSignals; // The array of related AliSignals
5f25234b 99 TObjArray* fHypotheses; // The array of track hypotheses
c72198f1 100 AliPositionObj* fBegin; // The begin-point of the track
101 AliPositionObj* fEnd; // The end-point of the track
c5555bc0 102 AliPositionObj* fRef; // The reference-point of the track for the 3-momentum vector
c72198f1 103 AliPositionObj* fImpactXY; // The (extrapolated) impact-point in the plane z=0
104 AliPositionObj* fImpactXZ; // The (extrapolated) impact-point in the plane y=0
105 AliPositionObj* fImpactYZ; // The (extrapolated) impact-point in the plane x=0
106 Int_t fUserId; // The user defined identifier
107 AliPositionObj* fClosest; // The (extrapolated) point of closest approach w.r.t some reference
c72198f1 108 Int_t fCode; // The user defined particle id code
1fbffa23 109 AliTrack* fParent; // Pointer to the parent track
5f25234b 110 Float_t fProb; // Probability for this track as a hypothesis
ea0b5b7f 111 TObject* fFit; // Object containing details of the fit
a7dc0627 112 AliTimestamp* fTstamp; // The track timestamp
25eefd00 113 Float_t fEscale; // The scale of the energy-momentum units of the track
d88f97cc 114
115 private:
1f241680 116 void Dumps(AliTrack* t,Int_t n,TString f,TString u); // Recursively print all decay levels
d88f97cc 117
caa58e1a 118 ClassDef(AliTrack,21) // Handling of the attributes of a reconstructed particle track.
d88f97cc 119};
120#endif