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update to set/get event in dummy handler (Marta)
[u/mrichter/AliRoot.git] / STEER / STEER / AliGenerator.h
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1#ifndef ALIGENERATOR_H
2#define ALIGENERATOR_H
3/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
5
6/* $Id$ */
7
8///////////////////////////////////////////////////////////
9// //
10// Class to generate the particles for the MC //
11// The base class is empty //
12// //
13///////////////////////////////////////////////////////////
14
15#include <TArrayF.h>
16#include <TLorentzVector.h>
17#include <TMCProcess.h>
18
19#include "AliRndm.h"
20
21class AliVertexGenerator;
22class AliCollisionGeometry;
23class AliGenEventHeader;
24class AliStack;
25class TGenerator;
26
27
28
29typedef enum { kNoSmear, kPerEvent, kPerTrack } VertexSmear_t;
30typedef enum { kExternal, kInternal, kContainer} VertexSource_t;
31
32
33class AliGenerator : public TNamed, public AliRndm
34{
35
36 public:
37
38 AliGenerator();
39 AliGenerator(Int_t npart);
40 virtual ~AliGenerator();
41 virtual void Init();
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 SetSigmaZ(Float_t sz) {fOsigma[2] = sz;}
46 virtual void SetMomentumRange(Float_t pmin=0, Float_t pmax=1.e10);
47 virtual void SetPtRange(Float_t ptmin=0, Float_t ptmax=1.e10);
48 virtual void SetPhiRange(Float_t phimin = 0., Float_t phimax = 360.);
49 virtual void SetYRange(Float_t ymin=-100, Float_t ymax=100);
50 virtual void SetVRange(Float_t vxmin, Float_t vxmax,
51 Float_t vymin, Float_t vymax,
52 Float_t vzmin, Float_t vzmax);
53 virtual void SetNumberParticles(Int_t npart=100) {fNpart=npart;}
54 virtual Int_t NumberParticles() const {return fNpart;}
55 virtual void SetThetaRange(Float_t thetamin=0, Float_t thetamax=180);
56 virtual void GenerateN(Int_t ntimes);
57 virtual void Generate()=0;
58 virtual void SetParentWeight(Float_t wgt) {fParentWeight=wgt;}
59 virtual void SetChildWeight(Float_t wgt) {fChildWeight=wgt;}
60 virtual void SetAnalog(Int_t flag=1) {fAnalog=flag;}
61 virtual void SetVertexSmear(VertexSmear_t smear) {fVertexSmear = smear;}
62 virtual void SetCutVertexZ(Float_t cut=999999.) {fCutVertexZ = cut;}
63 virtual void SetVertexSource(VertexSource_t source = kInternal) {fVertexSource = source;}
64 virtual void SetVertex(Float_t vx, Float_t vy, Float_t vz, Float_t t = 0)
65 {fVertex[0] = vx; fVertex[1] = vy; fVertex[2] = vz; fTime = t;}
66 void SetVertexGenerator(AliVertexGenerator* vertexGenerator)
67 {fVertexGenerator = vertexGenerator; fVertexSource = kExternal; fVertexSmear = kPerEvent;}
68 void SetPileUpTimeWindow(Float_t pileUpTimeW) {fPileUpTimeWindow = pileUpTimeW;}
69 virtual void SetTime(Float_t time)
70 {fTime = time;}
71 virtual void SetTimeOrigin(Float_t timeorig)
72 {fTimeOrigin = timeorig;}
73
74 virtual void SetTrackingFlag(Int_t flag=1) {fTrackIt=flag;}
75 void Vertex();
76 void VertexExternal();
77 virtual void VertexInternal();
78 virtual void FinishRun();
79 virtual void SetMC(TGenerator *theMC) {fMCEvGen =theMC;}
80 virtual TGenerator* GetMC() const {return fMCEvGen;}
81 virtual void AddHeader(AliGenEventHeader* /*header*/) {;}
82 virtual void SetContainer(AliGenerator* container) {fContainer = container;}
83 virtual void SetEventPlane(Float_t evPlane) {fEvPlane = evPlane; }
84
85 // Getters
86
87 virtual void GetOrigin(Float_t &ox, Float_t &oy, Float_t &oz) const
88 {ox=fOrigin.At(0);oy=fOrigin.At(1);oz=fOrigin.At(2);}
89 virtual void GetOrigin(TLorentzVector &o) const
90 {o[0]=fOrigin.At(0);o[1]=fOrigin.At(1);o[2]=fOrigin.At(2);o[3]=0;}
91 // Stack
92 void SetStack (AliStack *stack) {fStack = stack;}
93 AliStack* GetStack(){return fStack;}
94 // Collision Geometry
95 virtual Bool_t ProvidesCollisionGeometry() const {return kFALSE;}
96 virtual Bool_t NeedsCollisionGeometry() const {return kFALSE;}
97 virtual AliCollisionGeometry* CollisionGeometry() const {return fCollisionGeometry;}
98 virtual void SetCollisionGeometry(AliCollisionGeometry* geom) {fCollisionGeometry = geom;}
99
100 virtual Float_t GetEnergyCMS() const { return fEnergyCMS; }
101 virtual void SetEnergyCMS(Float_t energy = 0) { fEnergyCMS = energy; }
102 virtual void GetProjectile(TString& tar, Int_t& a, Int_t& z) const
103 {tar = fProjectile; a = fAProjectile; z = fZProjectile;}
104 virtual void GetTarget(TString& tar, Int_t& a, Int_t& z) const
105 {tar = fTarget; a = fATarget; z = fZTarget;}
106 virtual void SetProjectile(TString proj="", Int_t a = 0, Int_t z = 0)
107 {fProjectile = proj; fAProjectile = a; fZProjectile = z;}
108 virtual void SetTarget(TString tar="", Int_t a = 0, Int_t z = 0)
109 {fTarget = tar; fATarget = a; fZTarget = z;}
110
111 protected:
112 virtual void PushTrack(Int_t done, Int_t parent, Int_t pdg,
113 Float_t *pmom, Float_t *vpos, Float_t *polar,
114 Float_t tof, TMCProcess mech, Int_t &ntr,
115 Float_t weight = 1, Int_t is = 0);
116 virtual void PushTrack(Int_t done, Int_t parent, Int_t pdg,
117 Double_t px, Double_t py, Double_t pz, Double_t e,
118 Double_t vx, Double_t vy, Double_t vz, Double_t tof,
119 Double_t polx, Double_t poly, Double_t polz,
120 TMCProcess mech, Int_t &ntr, Float_t weight = 1, Int_t is = 0);
121 virtual void KeepTrack(Int_t itrack);
122 virtual void SetHighWaterMark(Int_t nt);
123
124 protected:
125 TGenerator* fMCEvGen; //!Pointer to the generator
126 Float_t fThetaMin; //Minimum theta of generation in radians
127 Float_t fThetaMax; //Maximum theta of generation in radians
128 Float_t fPhiMin; //Minimum phi of generation in radians
129 Float_t fPhiMax; //Maximum phi of generation in radians
130 Float_t fPMin; //Minimum momentum of generation in GeV/c
131 Float_t fPMax; //Minimum momentum of generation in GeV/c
132 Float_t fPtMin; //Minimum transverse momentum
133 Float_t fPtMax; //Maximum transverse momentum
134 Float_t fYMin; //Minimum rapidity
135 Float_t fYMax; //Maximum rapidity
136 TArrayF fVMin; //Minimum Decaylength
137 TArrayF fVMax; //Minimum Decaylength
138 Int_t fNpart; //Maximum number of particles per event
139 Float_t fParentWeight; //Parent Weight
140 Float_t fChildWeight; //ChildWeight
141 Int_t fAnalog; //Flag for anolog or pt-weighted generation
142 //
143 VertexSmear_t fVertexSmear; //Vertex Smearing mode
144 VertexSource_t fVertexSource; //Vertex source (internal/external)
145 Float_t fCutVertexZ; //Vertex cut in units of sigma_z
146 Float_t fPileUpTimeWindow; //Time window for pile-up events
147 Int_t fTrackIt; // if 1, Track final state particles
148 AliVertexGenerator* fVertexGenerator; //! Generator for the vertex
149 TArrayF fOrigin; // Origin of event
150 TArrayF fOsigma; // Sigma of the Origin of event
151 TArrayF fVertex; //! Vertex of current event
152
153 Float_t fTimeOrigin; // Time0 origin in a run or event sample
154 Float_t fTime; // Event time smeared around time0 origin using sigma vertex
155 Float_t fEvPlane; // the event plane
156
157 AliStack* fStack; //! Local pointer to stack
158 AliGenerator* fContainer; //! Local pointer to container
159
160 AliCollisionGeometry* fCollisionGeometry; //!Collision geometry
161 /*************************************************************************/
162 enum {kThetaRange = BIT(14),
163 kVertexRange = BIT(15),
164 kPhiRange = BIT(16),
165 kPtRange = BIT(17),
166 kYRange = BIT(18),
167 kMomentumRange = BIT(19),
168 kEtaRange = BIT(20)
169 };
170
171 Float_t fEnergyCMS; // Centre of mass energy
172 Int_t fAProjectile; // Projectile A
173 Int_t fZProjectile; // Projectile Z
174 Int_t fATarget; // Target A
175 Int_t fZTarget; // Target Z
176 TString fProjectile; // Projectile
177 TString fTarget; // Target
178
179 private:
180 AliGenerator(const AliGenerator &gen);
181 AliGenerator & operator=(const AliGenerator &gen);
182
183 ClassDef(AliGenerator,5) // Base class for event generators
184};
185
186#endif
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