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6bc03c45 | 1 | #ifndef AliVParticle_H |
2 | #define AliVParticle_H | |
3 | /* Copyright(c) 1998-2007, ALICE Experiment at CERN, All rights reserved. * | |
4 | * See cxx source for full Copyright notice */ | |
5 | ||
6 | /* $Id$ */ | |
7 | ||
8 | //------------------------------------------------------------------------- | |
9 | // base class for ESD and AOD particles | |
10 | // Author: Markus Oldenburg, CERN | |
11 | //------------------------------------------------------------------------- | |
12 | ||
13 | #include <Rtypes.h> | |
14 | #include <TObject.h> | |
15 | ||
6a7d7784 | 16 | #include <float.h> |
17 | ||
18 | const Double_t kAlmost1=1. - Double_t(FLT_EPSILON); | |
19 | const Double_t kAlmost0=Double_t(FLT_MIN); | |
c683ddc2 | 20 | |
02d77919 | 21 | const Double_t kB2C=-0.299792458e-3; |
c683ddc2 | 22 | const Double_t kAlmost0Field=1.e-13; |
23 | ||
6bc03c45 | 24 | class AliVParticle: public TObject { |
25 | ||
26 | public: | |
e546b023 | 27 | AliVParticle() : fPoolID(-1) { } |
6bc03c45 | 28 | virtual ~AliVParticle() { } |
29 | AliVParticle(const AliVParticle& vPart); | |
30 | AliVParticle& operator=(const AliVParticle& vPart); | |
31 | ||
e546b023 | 32 | virtual void SetPoolID(const Int_t id) {fPoolID = id;} |
33 | virtual Int_t GetPoolID() const {return fPoolID;} | |
34 | ||
6bc03c45 | 35 | // kinematics |
36 | virtual Double_t Px() const = 0; | |
37 | virtual Double_t Py() const = 0; | |
38 | virtual Double_t Pz() const = 0; | |
39 | virtual Double_t Pt() const = 0; | |
6a8e543a | 40 | virtual Double_t P() const = 0; |
c683ddc2 | 41 | virtual Bool_t PxPyPz(Double_t p[3]) const = 0; |
42 | ||
43 | virtual Double_t Xv() const = 0; | |
44 | virtual Double_t Yv() const = 0; | |
45 | virtual Double_t Zv() const = 0; | |
46 | virtual Bool_t XvYvZv(Double_t x[3]) const = 0; | |
6bc03c45 | 47 | |
6a8e543a | 48 | virtual Double_t OneOverPt() const = 0; |
49 | virtual Double_t Phi() const = 0; | |
50 | virtual Double_t Theta() const = 0; | |
6bc03c45 | 51 | |
52 | ||
6a8e543a | 53 | virtual Double_t E() const = 0; |
54 | virtual Double_t M() const = 0; | |
6bc03c45 | 55 | |
6a8e543a | 56 | virtual Double_t Eta() const = 0; |
57 | virtual Double_t Y() const = 0; | |
6bc03c45 | 58 | |
6a8e543a | 59 | virtual Short_t Charge() const = 0; |
60 | virtual Int_t GetLabel() const = 0; | |
6bc03c45 | 61 | // PID |
6a8e543a | 62 | virtual Int_t PdgCode() const = 0; |
6bc03c45 | 63 | virtual const Double_t *PID() const = 0; // return PID object (to be defined, still) |
64 | ||
5ffcfef5 | 65 | |
66 | ||
67 | /** Compare this class with an other instance of this class | |
68 | * used in a TCollection::Sort()/TClonesArray::Sort() | |
69 | * @param obj ptr to other instance | |
70 | * @return Returns 0 when equal, 1 when this is smaller | |
71 | * and -1 when bigger -- sorts descending | |
72 | */ | |
73 | Int_t Compare( const TObject* obj) const; | |
74 | ||
75 | ||
76 | /** Defines this class as being sortable in a TCollection | |
77 | * @return always kTRUE; | |
78 | */ | |
79 | Bool_t IsSortable() const { return kTRUE; } | |
80 | ||
81 | ||
c683ddc2 | 82 | // coordinate system conversions |
83 | Bool_t Local2GlobalMomentum(Double_t p[3], Double_t alpha) const; | |
84 | Bool_t Local2GlobalPosition(Double_t r[3], Double_t alpha) const; | |
85 | Bool_t Global2LocalMomentum(Double_t p[3], Short_t charge, Double_t &alpha) const; | |
86 | Bool_t Global2LocalPosition(Double_t r[3], Double_t alpha) const; | |
6bc03c45 | 87 | |
5ffcfef5 | 88 | |
e546b023 | 89 | protected: |
90 | Int_t fPoolID; //! id of position in the pool | |
91 | ||
92 | ClassDef(AliVParticle, 4) // base class for particles | |
6bc03c45 | 93 | }; |
94 | ||
95 | #endif |