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4c039060 | 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 | ||
88cb7938 | 16 | /* $Id$ */ |
4c039060 | 17 | |
675e9664 | 18 | // Container class for AliGenerator through recursion. |
19 | // Container is itself an AliGenerator. | |
20 | // What is stored are not the pointers to the generators directly but to objects of type | |
21 | // AliGenCocktail entry. | |
22 | // The class provides also iterator functionality. | |
23 | // Author: andreas.morsch@cern.ch | |
24 | // | |
25 | ||
116cbefd | 26 | #include <TList.h> |
27 | #include <TObjArray.h> | |
28 | ||
fe4da5cc | 29 | #include "AliGenCocktail.h" |
374924b5 | 30 | #include "AliGenCocktailEntry.h" |
09e2e187 | 31 | #include "AliCollisionGeometry.h" |
fe4da5cc | 32 | #include "AliRun.h" |
5d12ce38 | 33 | #include "AliMC.h" |
67db3ff2 | 34 | #include "AliGenEventHeader.h" |
fe4da5cc | 35 | |
36 | ClassImp(AliGenCocktail) | |
37 | ||
38 | AliGenCocktail::AliGenCocktail() | |
39 | :AliGenerator() | |
40 | { | |
374924b5 | 41 | // Constructor |
8b31bfac | 42 | fName = "Cocktail"; |
43 | fTitle= "Particle Generator using cocktail of generators"; | |
2685bf00 | 44 | flnk1 = 0; |
45 | flnk2 = 0; | |
fe4da5cc | 46 | fNGenerators=0; |
b1403e15 | 47 | fEntries = 0; |
48 | ||
fe4da5cc | 49 | } |
50 | ||
198bb1c7 | 51 | AliGenCocktail::AliGenCocktail(const AliGenCocktail & cocktail): |
52 | AliGenerator(cocktail) | |
374924b5 | 53 | { |
198bb1c7 | 54 | // Copy constructor |
55 | cocktail.Copy(*this); | |
374924b5 | 56 | } |
fe4da5cc | 57 | |
58 | AliGenCocktail::~AliGenCocktail() | |
59 | { | |
374924b5 | 60 | // Destructor |
fe4da5cc | 61 | delete fEntries; |
62 | } | |
63 | ||
64 | void AliGenCocktail:: | |
a764b7de | 65 | AddGenerator(AliGenerator *Generator, const char* Name, Float_t RateExp) |
fe4da5cc | 66 | { |
b1403e15 | 67 | // |
68 | // Add a generator to the list | |
69 | // First check that list exists | |
70 | if (!fEntries) fEntries = new TList(); | |
71 | ||
fe4da5cc | 72 | // |
73 | // Forward parameters to the new generator | |
212bcf04 | 74 | if(TestBit(kPtRange) && !(Generator->TestBit(kPtRange)) && !(Generator->TestBit(kMomentumRange))) |
75 | Generator->SetPtRange(fPtMin,fPtMax); | |
76 | if(TestBit(kMomentumRange) && !(Generator->TestBit(kPtRange)) && !(Generator->TestBit(kMomentumRange))) | |
77 | Generator->SetMomentumRange(fPMin,fPMax); | |
78 | ||
79 | if (!(Generator->TestBit(kYRange))) | |
80 | Generator->SetYRange(fYMin,fYMax); | |
81 | if (!(Generator->TestBit(kPhiRange))) | |
82 | Generator->SetPhiRange(fPhiMin*180/TMath::Pi(),fPhiMax*180/TMath::Pi()); | |
83 | if (!(Generator->TestBit(kThetaRange))) | |
84 | Generator->SetThetaRange(fThetaMin*180/TMath::Pi(),fThetaMax*180/TMath::Pi()); | |
85 | if (!(Generator->TestBit(kVertexRange))) | |
86 | Generator->SetOrigin(fOrigin[0], fOrigin[1], fOrigin[2]); | |
c8f7f6f9 | 87 | |
88 | Generator->SetSigma(fOsigma[0], fOsigma[1], fOsigma[2]); | |
7a50a130 | 89 | Generator->SetVertexSmear(fVertexSmear); |
c8f7f6f9 | 90 | Generator->SetVertexSource(kContainer); |
91 | Generator->SetTrackingFlag(fTrackIt); | |
c97002cc | 92 | |
fe4da5cc | 93 | // |
94 | // Add generator to list | |
c5c3e4b0 | 95 | char theName[256]; |
96 | sprintf(theName, "%s_%d",Name, fNGenerators); | |
97 | Generator->SetName(theName); | |
98 | ||
374924b5 | 99 | AliGenCocktailEntry *entry = |
fe4da5cc | 100 | new AliGenCocktailEntry(Generator, Name, RateExp); |
c5c3e4b0 | 101 | |
374924b5 | 102 | fEntries->Add(entry); |
fe4da5cc | 103 | fNGenerators++; |
104 | } | |
105 | ||
106 | void AliGenCocktail::Init() | |
374924b5 | 107 | { |
108 | // Initialisation | |
109 | TIter next(fEntries); | |
110 | AliGenCocktailEntry *entry; | |
111 | // | |
112 | // Loop over generators and initialize | |
113 | while((entry = (AliGenCocktailEntry*)next())) { | |
c97002cc | 114 | if (fStack) entry->Generator()->SetStack(fStack); |
374924b5 | 115 | entry->Generator()->Init(); |
116 | } | |
117 | } | |
fe4da5cc | 118 | |
09e2e187 | 119 | void AliGenCocktail::FinishRun() |
120 | { | |
121 | // Initialisation | |
122 | TIter next(fEntries); | |
123 | AliGenCocktailEntry *entry; | |
124 | // | |
125 | // Loop over generators and initialize | |
126 | while((entry = (AliGenCocktailEntry*)next())) { | |
127 | entry->Generator()->FinishRun(); | |
128 | } | |
129 | } | |
130 | ||
fe4da5cc | 131 | void AliGenCocktail::Generate() |
374924b5 | 132 | { |
133 | // | |
134 | // Generate event | |
135 | TIter next(fEntries); | |
a8408367 | 136 | AliGenCocktailEntry *entry = 0; |
137 | AliGenCocktailEntry *preventry = 0; | |
138 | AliGenerator* gen = 0; | |
09e2e187 | 139 | |
5d12ce38 | 140 | TObjArray *partArray = gAlice->GetMCApp()->Particles(); |
c8f7f6f9 | 141 | |
142 | // | |
143 | // Generate the vertex position used by all generators | |
144 | // | |
145 | if(fVertexSmear == kPerEvent) Vertex(); | |
146 | ||
67db3ff2 | 147 | TArrayF eventVertex; |
148 | eventVertex.Set(3); | |
149 | for (Int_t j=0; j < 3; j++) eventVertex[j] = fVertex[j]; | |
150 | ||
c8f7f6f9 | 151 | |
152 | // | |
374924b5 | 153 | // Loop over generators and generate events |
154 | Int_t igen=0; | |
a8408367 | 155 | |
374924b5 | 156 | while((entry = (AliGenCocktailEntry*)next())) { |
157 | igen++; | |
158 | if (igen ==1) { | |
159 | entry->SetFirst(0); | |
160 | } else { | |
161 | entry->SetFirst((partArray->GetEntriesFast())+1); | |
162 | } | |
a8408367 | 163 | // |
164 | // Handle case in which current generator needs collision geometry from previous generator | |
165 | // | |
166 | gen = entry->Generator(); | |
167 | if (gen->NeedsCollisionGeometry()) | |
168 | { | |
169 | if (preventry && preventry->Generator()->ProvidesCollisionGeometry()) | |
170 | { | |
171 | gen->SetCollisionGeometry(preventry->Generator()->CollisionGeometry()); | |
172 | } else { | |
173 | Fatal("Generate()", "No Collision Geometry Provided"); | |
174 | } | |
175 | } | |
c8f7f6f9 | 176 | entry->Generator()->SetVertex(fVertex.At(0), fVertex.At(1), fVertex.At(2)); |
374924b5 | 177 | entry->Generator()->Generate(); |
178 | entry->SetLast(partArray->GetEntriesFast()); | |
a8408367 | 179 | preventry = entry; |
374924b5 | 180 | } |
181 | next.Reset(); | |
67db3ff2 | 182 | // Header |
183 | AliGenEventHeader* header = new AliGenEventHeader("AliGenCocktail"); | |
184 | // Event Vertex | |
185 | header->SetPrimaryVertex(eventVertex); | |
186 | gAlice->SetGenEventHeader(header); | |
374924b5 | 187 | } |
fe4da5cc | 188 | |
c44d1c08 | 189 | void AliGenCocktail::SetVertexSmear(VertexSmear_t smear) |
190 | { | |
191 | // Set vertex smearing and propagate it to the generators | |
192 | ||
193 | AliGenerator::SetVertexSmear(smear); | |
194 | TIter next(fEntries); | |
195 | while (AliGenCocktailEntry* entry = (AliGenCocktailEntry*)next()) { | |
196 | entry->Generator()->SetVertexSmear(smear); | |
197 | } | |
198 | } | |
199 | ||
fe4da5cc | 200 | AliGenCocktailEntry * AliGenCocktail::FirstGenerator() |
201 | { | |
374924b5 | 202 | // Iterator over generators: Initialisation |
fe4da5cc | 203 | flnk1 = fEntries->FirstLink(); |
204 | if (flnk1) { | |
205 | return (AliGenCocktailEntry*) (flnk1->GetObject()); | |
206 | } else { | |
207 | return 0; | |
208 | } | |
209 | } | |
210 | ||
211 | AliGenCocktailEntry* AliGenCocktail::NextGenerator() | |
212 | { | |
374924b5 | 213 | // Iterator over generators: Increment |
fe4da5cc | 214 | flnk1 = flnk1->Next(); |
215 | if (flnk1) { | |
216 | return (AliGenCocktailEntry*) (flnk1->GetObject()); | |
217 | } else { | |
218 | return 0; | |
219 | } | |
220 | } | |
221 | ||
222 | void AliGenCocktail:: | |
223 | FirstGeneratorPair(AliGenCocktailEntry*& e1, AliGenCocktailEntry*& e2) | |
224 | { | |
374924b5 | 225 | // Iterator over generator pairs: Initialisation |
fe4da5cc | 226 | flnk2 = flnk1 = fEntries->FirstLink(); |
227 | if (flnk1) { | |
228 | e2 = e1 = (AliGenCocktailEntry*) (flnk1->GetObject()); | |
229 | } else { | |
230 | e2= e1 = 0; | |
231 | } | |
232 | } | |
233 | ||
234 | void AliGenCocktail:: | |
235 | NextGeneratorPair(AliGenCocktailEntry*& e1, AliGenCocktailEntry*& e2) | |
236 | { | |
374924b5 | 237 | // Iterator over generators: Increment |
fe4da5cc | 238 | flnk2 = flnk2->Next(); |
239 | if (flnk2) { | |
240 | e1 = (AliGenCocktailEntry*) (flnk1->GetObject()); | |
241 | e2 = (AliGenCocktailEntry*) (flnk2->GetObject()); | |
242 | } else { | |
243 | flnk2 = flnk1 = flnk1->Next(); | |
244 | if (flnk1) { | |
245 | e1 = (AliGenCocktailEntry*) (flnk1->GetObject()); | |
246 | e2 = (AliGenCocktailEntry*) (flnk2->GetObject()); | |
247 | } else { | |
248 | e1=0; | |
249 | e2=0; | |
250 | } | |
251 | } | |
252 | } | |
253 | ||
374924b5 | 254 | AliGenCocktail& AliGenCocktail::operator=(const AliGenCocktail& rhs) |
255 | { | |
256 | // Assignment operator | |
198bb1c7 | 257 | rhs.Copy(*this); |
258 | return (*this); | |
fe4da5cc | 259 | } |
260 | ||
dc1d768c | 261 | void AliGenCocktail::Copy(TObject &) const |
198bb1c7 | 262 | { |
263 | Fatal("Copy","Not implemented!\n"); | |
264 | } | |
265 | ||
266 | ||
fe4da5cc | 267 |