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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 | ||
26 | //#include "TSystem.h" | |
27 | //#include "TUnixSystem.h" | |
28 | #include "TParticle.h" | |
29 | #include "TMevSim.h" | |
30 | ||
31 | #include "AliGenMevSim.h" | |
32 | #include "AliRun.h" | |
33 | ||
34 | ||
35 | ClassImp(AliGenMevSim) | |
36 | ||
7cdba479 | 37 | static TRandom * sRandom; |
38 | ||
36b81802 | 39 | //____________________________________________________________________________ |
40 | AliGenMevSim::AliGenMevSim() : AliGenerator(-1) | |
41 | { | |
42 | // | |
43 | // Standard creator | |
44 | // | |
45 | ||
46 | fConfig = new AliMevSimConfig(); | |
47 | fMevSim = new TMevSim(); | |
48 | sRandom = fRandom; | |
49 | ||
50 | } | |
51 | //____________________________________________________________________________ | |
52 | AliGenMevSim::AliGenMevSim(AliMevSimConfig *config): AliGenerator(-1) { | |
53 | ||
54 | fConfig = config; | |
55 | fMevSim = new TMevSim(); | |
56 | sRandom = fRandom; | |
57 | } | |
58 | ||
59 | //____________________________________________________________________________ | |
60 | AliGenMevSim::~AliGenMevSim() | |
61 | { | |
62 | // | |
63 | // Standard destructor | |
64 | // | |
65 | if (fMevSim) delete fMevSim; | |
66 | } | |
67 | //____________________________________________________________________________ | |
68 | void AliGenMevSim::SetConfig(AliMevSimConfig *config) { | |
69 | ||
70 | fConfig = config; | |
71 | } | |
72 | //____________________________________________________________________________ | |
73 | void AliGenMevSim::AddParticleType(AliMevSimParticle *type) { | |
74 | ||
75 | fMevSim->AddPartTypeParams((TMevSimPartTypeParams*)type); | |
76 | } | |
77 | //____________________________________________________________________________ | |
78 | void AliGenMevSim::Init() | |
79 | { | |
80 | // | |
81 | // Generator initialisation method | |
82 | // | |
83 | ||
84 | // fill data from AliMevSimConfig; | |
85 | ||
86 | TMevSim *mevsim = fMevSim; | |
87 | ||
88 | // geometry & momentum cut | |
89 | ||
90 | if (TestBit(kPtRange)) mevsim->SetPtCutRange(fPtMin, fPtMax); | |
91 | ||
92 | if (TestBit(kPhiRange)) // from radians to 0 - 360 deg | |
93 | mevsim->SetPhiCutRange( fPhiMin * 180 / TMath::Pi() , fPhiMax * 180 / TMath::Pi() ); | |
94 | ||
95 | if (TestBit(kThetaRange)) // from theta to eta | |
96 | { | |
97 | mevsim->SetEtaCutRange( -TMath::Log( TMath::Tan(fThetaMax/2)) , -TMath::Log( TMath::Tan(fThetaMin/2)) ); | |
98 | } | |
99 | ||
100 | // mevsim specyfic parameters | |
101 | ||
102 | mevsim->SetModelType(fConfig->fModelType); | |
103 | mevsim->SetReacPlaneCntrl(fConfig->fReacPlaneCntrl); | |
104 | mevsim->SetPsiRParams(fConfig->fPsiRMean, fConfig->fPsiRStDev); | |
105 | mevsim->SetMultFacParams(fConfig->fMultFacMean, fConfig->fMultFacStDev); | |
106 | ||
107 | // mevsim initialisation | |
108 | ||
109 | mevsim->Initialize(); | |
110 | } | |
111 | ||
112 | //____________________________________________________________________________ | |
113 | void AliGenMevSim::Generate() | |
114 | { | |
115 | // | |
116 | // Read the formatted output file and load the particles | |
117 | // Temporary solution | |
118 | // | |
119 | ||
120 | Int_t i; | |
121 | ||
122 | PDG_t pdg; | |
123 | Float_t orgin[3] = {0,0,0}; | |
124 | Float_t polar[3] = {0,0,0}; | |
125 | Float_t p[3] = {1,1,1}; | |
126 | Float_t time = 0; | |
127 | ||
128 | const Int_t parent = -1; | |
129 | Int_t id; | |
130 | ||
131 | // vertexing | |
132 | ||
133 | VertexInternal(); | |
134 | ||
135 | orgin[0] = fVertex[0]; | |
136 | orgin[1] = fVertex[1]; | |
137 | orgin[2] = fVertex[2]; | |
138 | ||
139 | cout << "Vertex "; | |
140 | for (i =0; i<3; i++) | |
141 | cout << orgin[i] << "\t"; | |
142 | cout << endl; | |
143 | ||
144 | Int_t nParticles = 0; | |
145 | ||
146 | TClonesArray *particles = new TClonesArray("TParticle"); | |
147 | TParticle *particle; | |
148 | ||
149 | fMevSim->GenerateEvent(); | |
150 | fNpart= fMevSim->ImportParticles(particles,""); | |
151 | ||
152 | cout << "Found " << fNpart << " particles ..." << endl; | |
153 | nParticles = fNpart; | |
154 | ||
155 | for (i=0; i<nParticles; i++) { | |
156 | ||
157 | particle = (TParticle*) (*particles)[i]; | |
158 | ||
159 | pdg = (PDG_t) particle->GetPdgCode(); | |
160 | p[0] = particle->Px(); | |
161 | p[1] = particle->Py(); | |
162 | p[2] = particle->Pz(); | |
163 | ||
164 | SetTrack(fTrackIt, parent, pdg, p, orgin, polar, time, kPPrimary, id); | |
165 | ||
166 | } | |
167 | ||
168 | particles->Clear(); | |
169 | if (particles) delete particles; | |
170 | } | |
171 | //____________________________________________________________________________ | |
172 | //____________________________________________________________________________ | |
173 | ||
174 | ||
175 | #ifndef WIN32 | |
176 | # define ran ran_ | |
177 | # define type_of_call | |
178 | #else | |
179 | # define ran RAN | |
180 | # define type_of_call _stdcall | |
181 | #endif | |
182 | ||
183 | extern "C" Float_t type_of_call ran(Int_t &) | |
184 | { | |
185 | return sRandom->Rndm(); | |
186 | } | |
187 | ||
188 | //____________________________________________________________________________ |