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1 | #ifndef ALITRACK_H | |
2 | #define ALITRACK_H | |
3 | ||
4 | /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
5 | * See cxx source for full Copyright notice */ | |
6 | ||
7 | // $Id$ | |
8 | ||
9 | ||
10 | #include "TObject.h" | |
11 | #include "TObjArray.h" | |
12 | #include "TArrayD.h" | |
13 | #include "TArrayI.h" | |
14 | ||
15 | #include "AliSignal.h" | |
16 | #include "AliBoost.h" | |
17 | #include "AliPositionObj.h" | |
18 | #include "AliTimestamp.h" | |
19 | ||
20 | class AliTrack : public TNamed,public Ali4Vector | |
21 | { | |
22 | public: | |
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 | |
30 | void SetMass(Double_t m,Double_t dm=0); // Set particle mass and error | |
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 | |
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 | |
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 | |
39 | Float_t GetCharge() const; // Provide particle charge | |
40 | Double_t GetEnergy(Float_t scale=-1); // Provide particle total energy | |
41 | void Decay(Double_t m1,Double_t m2,Double_t thcms,Double_t phicms); // Perform 2-body decay | |
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 | |
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 | |
48 | Int_t GetNsignals() const; // Provide number of related AliSignals | |
49 | Int_t GetNsignals(const char* classname) const; // Provide the number of selected signals | |
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 | |
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 | |
57 | void AddTrackHypothesis(AliTrack& t); // Add track hypothesis | |
58 | void AddTrackHypothesis(Double_t prob,Double_t m,Double_t dm=0); // Add track hypothesis with mass data | |
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 | |
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 | |
68 | Double_t GetRapidity(); // Provide rapidity value w.r.t. z-axis | |
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" | |
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 | |
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 | |
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 | |
84 | void SetTimestamp(AliTimestamp& t); // Set the track timestamp | |
85 | AliTimestamp* GetTimestamp(); // Provide the track timestamp | |
86 | void RemoveTimestamp(); // Remove timestamp from this track | |
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 | |
93 | ||
94 | protected: | |
95 | void Init(); // Initialisation of pointers etc... | |
96 | Float_t fQ; // The charge of the particle | |
97 | TObjArray* fDecays; // The array of decay produced tracks | |
98 | TObjArray* fSignals; // The array of related AliSignals | |
99 | TObjArray* fHypotheses; // The array of track hypotheses | |
100 | AliPositionObj* fBegin; // The begin-point of the track | |
101 | AliPositionObj* fEnd; // The end-point of the track | |
102 | AliPositionObj* fRef; // The reference-point of the track for the 3-momentum vector | |
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 | |
108 | Int_t fCode; // The user defined particle id code | |
109 | AliTrack* fParent; // Pointer to the parent track | |
110 | Float_t fProb; // Probability for this track as a hypothesis | |
111 | TObject* fFit; // Object containing details of the fit | |
112 | AliTimestamp* fTstamp; // The track timestamp | |
113 | Float_t fEscale; // The scale of the energy-momentum units of the track | |
114 | ||
115 | private: | |
116 | void Dumps(AliTrack* t,Int_t n,TString f,TString u); // Recursively print all decay levels | |
117 | ||
118 | ClassDef(AliTrack,21) // Handling of the attributes of a reconstructed particle track. | |
119 | }; | |
120 | #endif |