]>
Commit | Line | Data |
---|---|---|
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 | ||
116cbefd | 15 | #include <TArrayF.h> |
16 | #include <TLorentzVector.h> | |
17 | #include <TMCProcess.h> | |
18 | ||
65fb704d | 19 | #include "AliRndm.h" |
eeb8ca4e | 20 | |
116cbefd | 21 | class AliCollisionGeometry; |
69a313ec | 22 | class AliStack; |
eeb8ca4e | 23 | |
116cbefd | 24 | class TGenerator; |
25 | ||
69a313ec | 26 | |
fe4da5cc | 27 | |
aee8290b | 28 | typedef enum { kNoSmear, kPerEvent, kPerTrack } VertexSmear_t; |
f89cabfe | 29 | typedef enum { kExternal, kInternal} VertexSource_t; |
fe4da5cc | 30 | |
69a313ec | 31 | |
65fb704d | 32 | class AliGenerator : public TNamed, public AliRndm |
fe4da5cc | 33 | { |
34 | ||
fe4da5cc | 35 | public: |
36 | AliGenerator(); | |
37 | AliGenerator(Int_t npart); | |
aee8290b | 38 | AliGenerator(const AliGenerator &gen); |
fe4da5cc | 39 | virtual ~AliGenerator(); |
40 | virtual void Init(); | |
ef42d733 | 41 | void Copy(AliGenerator &gen) const; |
94de3818 | 42 | virtual void SetOrigin(Float_t ox, Float_t oy, Float_t oz); |
43 | virtual void SetOrigin(const TLorentzVector &o); | |
44 | virtual void SetSigma(Float_t sx, Float_t sy, Float_t sz); | |
45 | virtual void SetMomentumRange(Float_t pmin=0, Float_t pmax=1.e10); | |
d48c5cd4 | 46 | virtual void SetPtRange(Float_t ptmin=0, Float_t ptmax=1.e10); |
94de3818 | 47 | virtual void SetPhiRange(Float_t phimin=-180., Float_t phimax=180); |
48 | virtual void SetYRange(Float_t ymin=-100, Float_t ymax=100); | |
fe4da5cc | 49 | virtual void SetVRange(Float_t vxmin, Float_t vxmax, |
50 | Float_t vymin, Float_t vymax, | |
94de3818 | 51 | Float_t vzmin, Float_t vzmax); |
fe4da5cc | 52 | virtual void SetNumberParticles(Int_t npart=100) {fNpart=npart;} |
94de3818 | 53 | virtual Int_t NumberParticles() const {return fNpart;} |
54 | virtual void SetThetaRange(Float_t thetamin=0, Float_t thetamax=180); | |
fe4da5cc | 55 | virtual void Generate()=0; |
56 | virtual void SetParentWeight(Float_t wgt) {fParentWeight=wgt;} | |
57 | virtual void SetChildWeight(Float_t wgt) {fChildWeight=wgt;} | |
58 | virtual void SetAnalog(Int_t flag=1) {fAnalog=flag;} | |
59 | virtual void SetVertexSmear(VertexSmear_t smear) {fVertexSmear = smear;} | |
c34578e7 | 60 | virtual void SetCutVertexZ(Float_t cut=999999.) {fCutVertexZ = cut;} |
e2afb3b6 | 61 | virtual void SetVertexSource(VertexSource_t) {fVertexSource = kInternal;} |
4a3ba9d2 | 62 | virtual void SetTrackingFlag(Int_t flag=1) {fTrackIt=flag;} |
f89cabfe | 63 | void Vertex(); |
64 | void VertexExternal(); | |
65 | virtual void VertexInternal(); | |
2939cc95 | 66 | virtual void FinishRun(){;} |
67 | ||
fe4da5cc | 68 | virtual void SetMC(TGenerator *theMC) |
69 | {if (!fgMCEvGen) fgMCEvGen =theMC;} | |
c9001868 | 70 | |
ef42d733 | 71 | AliGenerator & operator=(const AliGenerator &gen); |
aee8290b | 72 | |
c9001868 | 73 | // Getters |
74 | ||
94de3818 | 75 | virtual void GetOrigin(Float_t &ox, Float_t &oy, Float_t &oz) const |
76 | {ox=fOrigin.At(0);oy=fOrigin.At(1);oz=fOrigin.At(2);} | |
77 | virtual void GetOrigin(TLorentzVector &o) const | |
78 | {o[0]=fOrigin.At(0);o[1]=fOrigin.At(1);o[2]=fOrigin.At(2);o[3]=0;} | |
2c5b3727 | 79 | // Stack |
69a313ec | 80 | void SetStack (AliStack *stack) {fStack = stack;} |
81 | AliStack* GetStack(){return fStack;} | |
2c5b3727 | 82 | // Collision Geometry |
116cbefd | 83 | virtual Bool_t ProvidesCollisionGeometry() const {return kFALSE;} |
84 | virtual Bool_t NeedsCollisionGeometry() const {return kFALSE;} | |
2c5b3727 | 85 | virtual AliCollisionGeometry* CollisionGeometry() {return fCollisionGeometry;} |
86 | virtual void SetCollisionGeometry(AliCollisionGeometry* geom) {fCollisionGeometry = geom;} | |
69a313ec | 87 | protected: |
88 | virtual void SetTrack(Int_t done, Int_t parent, Int_t pdg, | |
89 | Float_t *pmom, Float_t *vpos, Float_t *polar, | |
98490ea9 | 90 | Float_t tof, TMCProcess mech, Int_t &ntr, |
47c8bcbe | 91 | Float_t weight = 1, Int_t is = 0); |
69a313ec | 92 | virtual void SetTrack(Int_t done, Int_t parent, Int_t pdg, |
93 | Double_t px, Double_t py, Double_t pz, Double_t e, | |
94 | Double_t vx, Double_t vy, Double_t vz, Double_t tof, | |
95 | Double_t polx, Double_t poly, Double_t polz, | |
98490ea9 | 96 | TMCProcess mech, Int_t &ntr, Float_t weight = 1, Int_t is = 0); |
69a313ec | 97 | virtual void KeepTrack(Int_t itrack); |
98 | virtual void SetHighWaterMark(Int_t nt); | |
99 | ||
100 | protected: | |
47c8bcbe | 101 | static TGenerator* fgMCEvGen; //Pointer to the generator |
aee8290b | 102 | Float_t fThetaMin; //Minimum theta of generation in radians |
103 | Float_t fThetaMax; //Maximum theta of generation in radians | |
104 | Float_t fPhiMin; //Minimum phi of generation in radians | |
105 | Float_t fPhiMax; //Maximum phi of generation in radians | |
106 | Float_t fPMin; //Minimum momentum of generation in GeV/c | |
107 | Float_t fPMax; //Minimum momentum of generation in GeV/c | |
108 | Float_t fPtMin; //Minimum transverse momentum | |
109 | Float_t fPtMax; //Maximum transverse momentum | |
110 | Float_t fYMin; //Minimum rapidity | |
111 | Float_t fYMax; //Maximum rapidity | |
112 | TArrayF fVMin; //Minimum Decaylength | |
113 | TArrayF fVMax; //Minimum Decaylength | |
114 | Int_t fNpart; //Maximum number of particles per event | |
115 | Float_t fParentWeight; //Parent Weight | |
116 | Float_t fChildWeight; //ChildWeight | |
69a313ec | 117 | Int_t fAnalog; //Flag for anolog or pt-weighted generation |
aee8290b | 118 | // |
f89cabfe | 119 | VertexSmear_t fVertexSmear; //Vertex Smearing mode |
c34578e7 | 120 | VertexSource_t fVertexSource; //Vertex source (internal/external) |
121 | Float_t fCutVertexZ; // Vertex cut in units of sigma_z | |
6df200c3 | 122 | Int_t fTrackIt; // if 1, Track final state particles |
f89cabfe | 123 | TArrayF fOrigin; // Origin of event |
6df200c3 | 124 | TArrayF fOsigma; // Sigma of the Origin of event |
f89cabfe | 125 | TArrayF fVertex; //! Vertex of current event |
c34578e7 | 126 | TArrayF fEventVertex; //!The current event vertex |
127 | ||
6df200c3 | 128 | AliStack* fStack; //! Local pointer to stack |
2c5b3727 | 129 | AliCollisionGeometry* fCollisionGeometry; //!Collision geometry |
69a313ec | 130 | /*************************************************************************/ |
5e34a898 | 131 | enum {kThetaRange = BIT(14), |
132 | kVertexRange = BIT(15), | |
69a313ec | 133 | kPhiRange = BIT(16), |
5e34a898 | 134 | kPtRange = BIT(17), |
69a313ec | 135 | kYRange = BIT(18), |
136 | kMomentumRange = BIT(19) | |
5e34a898 | 137 | }; |
2c5b3727 | 138 | ClassDef(AliGenerator,3) // Base class for event generators |
fe4da5cc | 139 | }; |
140 | ||
141 | #endif | |
69a313ec | 142 | |
143 | ||
144 | ||
c34578e7 | 145 | |
146 | ||
147 | ||
148 | ||
149 | ||
150 | ||
151 | ||
152 | ||
153 | ||
154 | ||
155 |