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36b81802 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
7cdba479 | 16 | /* $Id$ */ |
36b81802 | 17 | |
18 | // | |
19 | // Wrapper for MEVSIM generator. | |
20 | // It is using TMevSim to comunicate with fortarn code | |
21 | // | |
22 | // | |
23 | // Sylwester Radomski <radomski@if.pw.edu.pl> | |
24 | // | |
25 | ||
36b81802 | 26 | #include "TParticle.h" |
73968a51 | 27 | #include <Riostream.h> |
36b81802 | 28 | |
29 | #include "AliGenMevSim.h" | |
73968a51 | 30 | #include "AliMevSimConfig.h" |
31 | #include "AliMevSimParticle.h" | |
32 | //#include "AliRun.h" | |
33 | #include "TMevSim.h" | |
36b81802 | 34 | |
73968a51 | 35 | static TRandom * gAliRandom; |
36b81802 | 36 | |
37 | ClassImp(AliGenMevSim) | |
38 | ||
39 | //____________________________________________________________________________ | |
40 | AliGenMevSim::AliGenMevSim() : AliGenerator(-1) | |
41 | { | |
42 | // | |
73968a51 | 43 | // Default ctor |
36b81802 | 44 | // |
36b81802 | 45 | fConfig = new AliMevSimConfig(); |
46 | fMevSim = new TMevSim(); | |
73968a51 | 47 | gAliRandom = fRandom; |
36b81802 | 48 | |
49 | } | |
50 | //____________________________________________________________________________ | |
73968a51 | 51 | AliGenMevSim::AliGenMevSim(AliMevSimConfig *config): AliGenerator(-1) |
52 | { | |
53 | // | |
54 | // Standard ctor | |
55 | // | |
36b81802 | 56 | fConfig = config; |
57 | fMevSim = new TMevSim(); | |
73968a51 | 58 | gAliRandom = fRandom; |
36b81802 | 59 | } |
60 | ||
61 | //____________________________________________________________________________ | |
62 | AliGenMevSim::~AliGenMevSim() | |
63 | { | |
64 | // | |
65 | // Standard destructor | |
66 | // | |
67 | if (fMevSim) delete fMevSim; | |
68 | } | |
69 | //____________________________________________________________________________ | |
73968a51 | 70 | void AliGenMevSim::SetConfig(AliMevSimConfig *config) |
71 | { | |
72 | // | |
73 | // Sets the MevSim configuration | |
74 | // | |
36b81802 | 75 | fConfig = config; |
76 | } | |
36b81802 | 77 | |
73968a51 | 78 | //____________________________________________________________________________ |
79 | void AliGenMevSim::AddParticleType(AliMevSimParticle *type) | |
80 | { | |
81 | // | |
82 | // Add one particle type to MevSim | |
83 | // | |
36b81802 | 84 | fMevSim->AddPartTypeParams((TMevSimPartTypeParams*)type); |
85 | } | |
73968a51 | 86 | |
36b81802 | 87 | //____________________________________________________________________________ |
88 | void AliGenMevSim::Init() | |
89 | { | |
90 | // | |
91 | // Generator initialisation method | |
92 | // | |
93 | ||
94 | // fill data from AliMevSimConfig; | |
95 | ||
96 | TMevSim *mevsim = fMevSim; | |
97 | ||
98 | // geometry & momentum cut | |
99 | ||
100 | if (TestBit(kPtRange)) mevsim->SetPtCutRange(fPtMin, fPtMax); | |
101 | ||
102 | if (TestBit(kPhiRange)) // from radians to 0 - 360 deg | |
103 | mevsim->SetPhiCutRange( fPhiMin * 180 / TMath::Pi() , fPhiMax * 180 / TMath::Pi() ); | |
104 | ||
105 | if (TestBit(kThetaRange)) // from theta to eta | |
106 | { | |
107 | mevsim->SetEtaCutRange( -TMath::Log( TMath::Tan(fThetaMax/2)) , -TMath::Log( TMath::Tan(fThetaMin/2)) ); | |
108 | } | |
109 | ||
110 | // mevsim specyfic parameters | |
111 | ||
bb52edc0 | 112 | mevsim->SetModelType(fConfig->GetModelType()); |
113 | Int_t ctrl; Float_t psiRMean = 0; Float_t psiRStDev = 0; | |
114 | fConfig->GetRectPlane(ctrl,psiRMean,psiRStDev); | |
115 | mevsim->SetReacPlaneCntrl(ctrl); | |
116 | mevsim->SetPsiRParams(psiRMean, psiRStDev); | |
117 | Float_t mean; Float_t stDev; | |
118 | fConfig->GetMultFac(mean,stDev); | |
119 | mevsim->SetMultFacParams(mean,stDev); | |
36b81802 | 120 | // mevsim initialisation |
121 | ||
122 | mevsim->Initialize(); | |
123 | } | |
124 | ||
125 | //____________________________________________________________________________ | |
126 | void AliGenMevSim::Generate() | |
127 | { | |
128 | // | |
129 | // Read the formatted output file and load the particles | |
130 | // Temporary solution | |
131 | // | |
132 | ||
133 | Int_t i; | |
134 | ||
135 | PDG_t pdg; | |
136 | Float_t orgin[3] = {0,0,0}; | |
137 | Float_t polar[3] = {0,0,0}; | |
138 | Float_t p[3] = {1,1,1}; | |
139 | Float_t time = 0; | |
140 | ||
73968a51 | 141 | const Int_t kParent = -1; |
36b81802 | 142 | Int_t id; |
143 | ||
144 | // vertexing | |
145 | ||
146 | VertexInternal(); | |
147 | ||
148 | orgin[0] = fVertex[0]; | |
149 | orgin[1] = fVertex[1]; | |
150 | orgin[2] = fVertex[2]; | |
151 | ||
152 | cout << "Vertex "; | |
153 | for (i =0; i<3; i++) | |
154 | cout << orgin[i] << "\t"; | |
155 | cout << endl; | |
156 | ||
157 | Int_t nParticles = 0; | |
158 | ||
159 | TClonesArray *particles = new TClonesArray("TParticle"); | |
160 | TParticle *particle; | |
161 | ||
162 | fMevSim->GenerateEvent(); | |
163 | fNpart= fMevSim->ImportParticles(particles,""); | |
164 | ||
165 | cout << "Found " << fNpart << " particles ..." << endl; | |
166 | nParticles = fNpart; | |
167 | ||
168 | for (i=0; i<nParticles; i++) { | |
169 | ||
170 | particle = (TParticle*) (*particles)[i]; | |
171 | ||
172 | pdg = (PDG_t) particle->GetPdgCode(); | |
173 | p[0] = particle->Px(); | |
174 | p[1] = particle->Py(); | |
175 | p[2] = particle->Pz(); | |
176 | ||
73968a51 | 177 | PushTrack(fTrackIt, kParent, pdg, p, orgin, polar, time, kPPrimary, id); |
36b81802 | 178 | |
179 | } | |
180 | ||
181 | particles->Clear(); | |
182 | if (particles) delete particles; | |
183 | } | |
36b81802 | 184 | |
73968a51 | 185 | //____________________________________________________________________________ |
36b81802 | 186 | #ifndef WIN32 |
187 | # define ran ran_ | |
188 | # define type_of_call | |
189 | #else | |
190 | # define ran RAN | |
191 | # define type_of_call _stdcall | |
192 | #endif | |
193 | ||
194 | extern "C" Float_t type_of_call ran(Int_t &) | |
195 | { | |
73968a51 | 196 | // |
197 | // Replacement for package random number generator | |
198 | // | |
199 | return gAliRandom->Rndm(); | |
36b81802 | 200 | } |
201 |