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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 | ||
73968a51 | 26 | #include <Riostream.h> |
37b09b91 | 27 | #include <TClonesArray.h> |
28 | #include <TParticle.h> | |
36b81802 | 29 | |
30 | #include "AliGenMevSim.h" | |
73968a51 | 31 | #include "AliMevSimConfig.h" |
32 | #include "AliMevSimParticle.h" | |
33 | //#include "AliRun.h" | |
34 | #include "TMevSim.h" | |
36b81802 | 35 | |
73968a51 | 36 | static TRandom * gAliRandom; |
36b81802 | 37 | |
38 | ClassImp(AliGenMevSim) | |
39 | ||
40 | //____________________________________________________________________________ | |
b15b3ba3 | 41 | AliGenMevSim::AliGenMevSim() : |
42 | AliGenerator(-1), | |
43 | fMevSim(new TMevSim()), | |
44 | fConfig(new AliMevSimConfig()) | |
36b81802 | 45 | { |
46 | // | |
73968a51 | 47 | // Default ctor |
36b81802 | 48 | // |
73968a51 | 49 | gAliRandom = fRandom; |
36b81802 | 50 | |
51 | } | |
52 | //____________________________________________________________________________ | |
b15b3ba3 | 53 | AliGenMevSim::AliGenMevSim(AliMevSimConfig *config): |
54 | AliGenerator(-1), | |
55 | fMevSim(new TMevSim()), | |
56 | fConfig(config) | |
73968a51 | 57 | { |
58 | // | |
59 | // Standard ctor | |
60 | // | |
73968a51 | 61 | gAliRandom = fRandom; |
36b81802 | 62 | } |
63 | ||
64 | //____________________________________________________________________________ | |
65 | AliGenMevSim::~AliGenMevSim() | |
66 | { | |
67 | // | |
68 | // Standard destructor | |
69 | // | |
70 | if (fMevSim) delete fMevSim; | |
71 | } | |
72 | //____________________________________________________________________________ | |
73968a51 | 73 | void AliGenMevSim::SetConfig(AliMevSimConfig *config) |
74 | { | |
75 | // | |
76 | // Sets the MevSim configuration | |
77 | // | |
36b81802 | 78 | fConfig = config; |
79 | } | |
36b81802 | 80 | |
73968a51 | 81 | //____________________________________________________________________________ |
82 | void AliGenMevSim::AddParticleType(AliMevSimParticle *type) | |
83 | { | |
84 | // | |
85 | // Add one particle type to MevSim | |
86 | // | |
36b81802 | 87 | fMevSim->AddPartTypeParams((TMevSimPartTypeParams*)type); |
88 | } | |
73968a51 | 89 | |
36b81802 | 90 | //____________________________________________________________________________ |
91 | void AliGenMevSim::Init() | |
92 | { | |
93 | // | |
94 | // Generator initialisation method | |
95 | // | |
96 | ||
97 | // fill data from AliMevSimConfig; | |
98 | ||
99 | TMevSim *mevsim = fMevSim; | |
100 | ||
101 | // geometry & momentum cut | |
102 | ||
103 | if (TestBit(kPtRange)) mevsim->SetPtCutRange(fPtMin, fPtMax); | |
104 | ||
105 | if (TestBit(kPhiRange)) // from radians to 0 - 360 deg | |
106 | mevsim->SetPhiCutRange( fPhiMin * 180 / TMath::Pi() , fPhiMax * 180 / TMath::Pi() ); | |
107 | ||
108 | if (TestBit(kThetaRange)) // from theta to eta | |
109 | { | |
110 | mevsim->SetEtaCutRange( -TMath::Log( TMath::Tan(fThetaMax/2)) , -TMath::Log( TMath::Tan(fThetaMin/2)) ); | |
111 | } | |
112 | ||
113 | // mevsim specyfic parameters | |
114 | ||
bb52edc0 | 115 | mevsim->SetModelType(fConfig->GetModelType()); |
116 | Int_t ctrl; Float_t psiRMean = 0; Float_t psiRStDev = 0; | |
117 | fConfig->GetRectPlane(ctrl,psiRMean,psiRStDev); | |
118 | mevsim->SetReacPlaneCntrl(ctrl); | |
119 | mevsim->SetPsiRParams(psiRMean, psiRStDev); | |
120 | Float_t mean; Float_t stDev; | |
121 | fConfig->GetMultFac(mean,stDev); | |
122 | mevsim->SetMultFacParams(mean,stDev); | |
36b81802 | 123 | // mevsim initialisation |
124 | ||
125 | mevsim->Initialize(); | |
126 | } | |
127 | ||
128 | //____________________________________________________________________________ | |
129 | void AliGenMevSim::Generate() | |
130 | { | |
131 | // | |
132 | // Read the formatted output file and load the particles | |
133 | // Temporary solution | |
134 | // | |
135 | ||
136 | Int_t i; | |
137 | ||
138 | PDG_t pdg; | |
139 | Float_t orgin[3] = {0,0,0}; | |
140 | Float_t polar[3] = {0,0,0}; | |
141 | Float_t p[3] = {1,1,1}; | |
142 | Float_t time = 0; | |
143 | ||
73968a51 | 144 | const Int_t kParent = -1; |
36b81802 | 145 | Int_t id; |
146 | ||
147 | // vertexing | |
148 | ||
149 | VertexInternal(); | |
150 | ||
151 | orgin[0] = fVertex[0]; | |
152 | orgin[1] = fVertex[1]; | |
153 | orgin[2] = fVertex[2]; | |
154 | ||
155 | cout << "Vertex "; | |
156 | for (i =0; i<3; i++) | |
157 | cout << orgin[i] << "\t"; | |
158 | cout << endl; | |
159 | ||
160 | Int_t nParticles = 0; | |
161 | ||
162 | TClonesArray *particles = new TClonesArray("TParticle"); | |
163 | TParticle *particle; | |
164 | ||
165 | fMevSim->GenerateEvent(); | |
166 | fNpart= fMevSim->ImportParticles(particles,""); | |
167 | ||
168 | cout << "Found " << fNpart << " particles ..." << endl; | |
169 | nParticles = fNpart; | |
170 | ||
171 | for (i=0; i<nParticles; i++) { | |
172 | ||
173 | particle = (TParticle*) (*particles)[i]; | |
174 | ||
175 | pdg = (PDG_t) particle->GetPdgCode(); | |
176 | p[0] = particle->Px(); | |
177 | p[1] = particle->Py(); | |
178 | p[2] = particle->Pz(); | |
179 | ||
73968a51 | 180 | PushTrack(fTrackIt, kParent, pdg, p, orgin, polar, time, kPPrimary, id); |
36b81802 | 181 | |
182 | } | |
183 | ||
184 | particles->Clear(); | |
185 | if (particles) delete particles; | |
186 | } | |
36b81802 | 187 | |
73968a51 | 188 | //____________________________________________________________________________ |
36b81802 | 189 | #ifndef WIN32 |
190 | # define ran ran_ | |
191 | # define type_of_call | |
192 | #else | |
193 | # define ran RAN | |
194 | # define type_of_call _stdcall | |
195 | #endif | |
196 | ||
197 | extern "C" Float_t type_of_call ran(Int_t &) | |
198 | { | |
73968a51 | 199 | // |
200 | // Replacement for package random number generator | |
201 | // | |
202 | return gAliRandom->Rndm(); | |
36b81802 | 203 | } |
204 |