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fe4da5cc | 1 | #ifndef ALIGENERATOR_H |
2 | #define ALIGENERATOR_H | |
3da30618 | 3 | /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * |
4 | * See cxx source for full Copyright notice */ | |
5 | ||
6 | /* $Id$ */ | |
7 | ||
fe4da5cc | 8 | /////////////////////////////////////////////////////////// |
9 | // // | |
10 | // Class to generate the particles for the MC // | |
11 | // The base class is empty // | |
12 | // // | |
13 | /////////////////////////////////////////////////////////// | |
14 | ||
c9001868 | 15 | #include "TLorentzVector.h" |
fe4da5cc | 16 | #include "TArrayF.h" |
17 | #include "TGenerator.h" | |
18 | ||
aee8290b | 19 | typedef enum { kNoSmear, kPerEvent, kPerTrack } VertexSmear_t; |
fe4da5cc | 20 | |
21 | class AliGenerator : public TNamed | |
22 | { | |
23 | ||
fe4da5cc | 24 | public: |
25 | AliGenerator(); | |
26 | AliGenerator(Int_t npart); | |
aee8290b | 27 | AliGenerator(const AliGenerator &gen); |
fe4da5cc | 28 | virtual ~AliGenerator(); |
29 | virtual void Init(); | |
ef42d733 | 30 | void Copy(AliGenerator &gen) const; |
fe4da5cc | 31 | virtual void SetOrigin(Float_t ox, Float_t oy, Float_t oz) |
32 | {fOrigin[0]=ox;fOrigin[1]=oy;fOrigin[2]=oz;} | |
c9001868 | 33 | virtual void SetOrigin(const TLorentzVector &o) |
34 | {fOrigin[0]=o[0];fOrigin[1]=o[1];fOrigin[2]=o[2];} | |
fe4da5cc | 35 | virtual void SetSigma(Float_t sx, Float_t sy, Float_t sz) |
36 | {fOsigma[0]=sx;fOsigma[1]=sy;fOsigma[2]=sz;} | |
37 | virtual void SetMomentumRange(Float_t pmin=0, Float_t pmax=1.e10) | |
eb38572f | 38 | {fPMin = pmin; fPMax = pmax; SetBit(kMomentumRange);} |
e3053494 | 39 | virtual void SetPtRange(Float_t ptmin=0, Float_t ptmax=1.e10) |
eb38572f | 40 | {fPtMin = ptmin; fPtMax = ptmax; SetBit(kPtRange);} |
fe4da5cc | 41 | virtual void SetPhiRange(Float_t phimin=-180., Float_t phimax=180) |
42 | {fPhiMin = TMath::Pi()*phimin/180; | |
de6d59e3 | 43 | fPhiMax = TMath::Pi()*phimax/180; SetBit(kPhiRange);} |
fe4da5cc | 44 | virtual void SetYRange(Float_t ymin=-100, Float_t ymax=100) |
de6d59e3 | 45 | {fYMin=ymin; fYMax=ymax; SetBit(kYRange);} |
fe4da5cc | 46 | virtual void SetVRange(Float_t vxmin, Float_t vxmax, |
47 | Float_t vymin, Float_t vymax, | |
48 | Float_t vzmin, Float_t vzmax) | |
49 | { | |
50 | fVMin[0]=vxmin; fVMin[1]=vymin; fVMin[2]=vzmin; | |
51 | fVMax[0]=vxmax; fVMax[1]=vymax; fVMax[2]=vzmax; | |
de6d59e3 | 52 | SetBit(kVertexRange); |
fe4da5cc | 53 | } |
54 | virtual void SetNumberParticles(Int_t npart=100) {fNpart=npart;} | |
55 | virtual Int_t NumberParticles() {return fNpart;} | |
56 | virtual void SetThetaRange(Float_t thetamin=0, Float_t thetamax=180) | |
57 | {fThetaMin = TMath::Pi()*thetamin/180; | |
de6d59e3 | 58 | fThetaMax = TMath::Pi()*thetamax/180; SetBit(kThetaRange);} |
fe4da5cc | 59 | virtual void Generate()=0; |
60 | virtual void SetParentWeight(Float_t wgt) {fParentWeight=wgt;} | |
61 | virtual void SetChildWeight(Float_t wgt) {fChildWeight=wgt;} | |
62 | virtual void SetAnalog(Int_t flag=1) {fAnalog=flag;} | |
63 | virtual void SetVertexSmear(VertexSmear_t smear) {fVertexSmear = smear;} | |
4a3ba9d2 | 64 | virtual void SetTrackingFlag(Int_t flag=1) {fTrackIt=flag;} |
65 | ||
fe4da5cc | 66 | virtual void SetMC(TGenerator *theMC) |
67 | {if (!fgMCEvGen) fgMCEvGen =theMC;} | |
c9001868 | 68 | |
ef42d733 | 69 | AliGenerator & operator=(const AliGenerator &gen); |
aee8290b | 70 | |
c9001868 | 71 | // Getters |
72 | ||
73 | virtual void GetOrigin(Float_t &ox, Float_t &oy, Float_t &oz) | |
74 | {ox=fOrigin[0];oy=fOrigin[1];oz=fOrigin[2];} | |
75 | virtual void GetOrigin(TLorentzVector &o) | |
76 | {o[0]=fOrigin[0];o[1]=fOrigin[1];o[2]=fOrigin[2];o[3]=0;} | |
77 | ||
aee8290b | 78 | protected: |
79 | static TGenerator* fgMCEvGen; // Pointer to the generator | |
80 | Float_t fThetaMin; //Minimum theta of generation in radians | |
81 | Float_t fThetaMax; //Maximum theta of generation in radians | |
82 | Float_t fPhiMin; //Minimum phi of generation in radians | |
83 | Float_t fPhiMax; //Maximum phi of generation in radians | |
84 | Float_t fPMin; //Minimum momentum of generation in GeV/c | |
85 | Float_t fPMax; //Minimum momentum of generation in GeV/c | |
86 | Float_t fPtMin; //Minimum transverse momentum | |
87 | Float_t fPtMax; //Maximum transverse momentum | |
88 | Float_t fYMin; //Minimum rapidity | |
89 | Float_t fYMax; //Maximum rapidity | |
90 | TArrayF fVMin; //Minimum Decaylength | |
91 | TArrayF fVMax; //Minimum Decaylength | |
92 | Int_t fNpart; //Maximum number of particles per event | |
93 | Float_t fParentWeight; //Parent Weight | |
94 | Float_t fChildWeight; //ChildWeight | |
95 | Int_t fTrackit; // Track the generated final state particle if 1 | |
96 | Int_t fAnalog; //Flaf for anolog or pt-weighted generation | |
97 | // | |
98 | VertexSmear_t fVertexSmear; //Vertex Smearing mode | |
99 | Int_t fTrackIt; // if 1 Track final state particles | |
100 | TArrayF fOrigin; //Origin of event | |
101 | TArrayF fOsigma; //Sigma of the Origin of event | |
102 | ||
103 | enum {kThetaRange=1, kVertexRange=2, kPhiRange=4, kPtRange=8, | |
104 | kYRange=32, kMomentumRange=16}; | |
105 | ||
fe4da5cc | 106 | ClassDef(AliGenerator,1) |
107 | }; | |
108 | ||
109 | #endif |