1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
18 Revision 1.18 2003/03/24 16:38:40 morsch
21 Revision 1.17 2003/03/24 15:58:27 morsch
22 FinishRun() implemented.
24 Revision 1.16 2003/01/14 10:50:18 alibrary
25 Cleanup of STEER coding conventions
27 Revision 1.15 2003/01/07 14:13:22 morsch
28 Communication between generators provising and requesting collision
31 Revision 1.14 2002/02/08 16:50:50 morsch
32 Add name and title in constructor.
34 Revision 1.13 2001/10/21 18:35:56 hristov
35 Several pointers were set to zero in the default constructors to avoid memory management problems
37 Revision 1.12 2001/06/18 13:07:30 morsch
38 Forward kinematic ranges to entries only if not set by user.
40 Revision 1.11 2001/01/30 09:23:12 hristov
41 Streamers removed (R.Brun)
43 Revision 1.10 2001/01/26 19:55:49 hristov
44 Major upgrade of AliRoot code
46 Revision 1.9 2000/12/21 16:24:06 morsch
47 Coding convention clean-up
49 Revision 1.8 2000/10/27 13:53:29 morsch
50 AddGenerator: check testbit before setting the pT and momentum range
53 Revision 1.7 2000/10/02 15:15:41 morsch
54 Use default streamer for AliGenCocktail
56 Revision 1.6 2000/09/07 17:04:31 morsch
57 In Streamer: TIter() after R__b << fEntries (Dmitri Yurevitch Peressounko)
59 Revision 1.5 2000/06/09 20:28:51 morsch
60 All coding rule violations except RS3 corrected (AM)
62 Revision 1.4 1999/09/29 09:24:12 fca
63 Introduction of the Copyright and cvs Log
67 // Container class for AliGenerator through recursion.
68 // Container is itself an AliGenerator.
69 // What is stored are not the pointers to the generators directly but to objects of type
70 // AliGenCocktail entry.
71 // The class provides also iterator functionality.
72 // Author: andreas.morsch@cern.ch
76 #include <TObjArray.h>
78 #include "AliGenCocktail.h"
79 #include "AliGenCocktailEntry.h"
80 #include "AliCollisionGeometry.h"
83 ClassImp(AliGenCocktail)
85 AliGenCocktail::AliGenCocktail()
90 fTitle= "Particle Generator using cocktail of generators";
97 AliGenCocktail::AliGenCocktail(const AliGenCocktail & cocktail)
102 AliGenCocktail::~AliGenCocktail()
108 void AliGenCocktail::
109 AddGenerator(AliGenerator *Generator, char* Name, Float_t RateExp)
112 // Forward parameters to the new generator
113 if(TestBit(kPtRange) && !(Generator->TestBit(kPtRange)) && !(Generator->TestBit(kMomentumRange)))
114 Generator->SetPtRange(fPtMin,fPtMax);
115 if(TestBit(kMomentumRange) && !(Generator->TestBit(kPtRange)) && !(Generator->TestBit(kMomentumRange)))
116 Generator->SetMomentumRange(fPMin,fPMax);
118 if (!(Generator->TestBit(kYRange)))
119 Generator->SetYRange(fYMin,fYMax);
120 if (!(Generator->TestBit(kPhiRange)))
121 Generator->SetPhiRange(fPhiMin*180/TMath::Pi(),fPhiMax*180/TMath::Pi());
122 if (!(Generator->TestBit(kThetaRange)))
123 Generator->SetThetaRange(fThetaMin*180/TMath::Pi(),fThetaMax*180/TMath::Pi());
124 if (!(Generator->TestBit(kVertexRange)))
125 Generator->SetOrigin(fOrigin[0], fOrigin[1], fOrigin[2]);
127 Generator->SetSigma(fOsigma[0], fOsigma[1], fOsigma[2]);
128 Generator->SetVertexSmear(fVertexSmear);
129 Generator->SetVertexSource(kContainer);
130 Generator->SetTrackingFlag(fTrackIt);
132 // Add generator to list
134 AliGenCocktailEntry *entry =
135 new AliGenCocktailEntry(Generator, Name, RateExp);
136 fEntries->Add(entry);
140 void AliGenCocktail::Init()
143 TIter next(fEntries);
144 AliGenCocktailEntry *entry;
146 // Loop over generators and initialize
147 while((entry = (AliGenCocktailEntry*)next())) {
148 entry->Generator()->Init();
152 void AliGenCocktail::FinishRun()
155 TIter next(fEntries);
156 AliGenCocktailEntry *entry;
158 // Loop over generators and initialize
159 while((entry = (AliGenCocktailEntry*)next())) {
160 entry->Generator()->FinishRun();
164 void AliGenCocktail::Generate()
168 TIter next(fEntries);
169 AliGenCocktailEntry *entry = 0;
170 AliGenCocktailEntry *preventry = 0;
171 AliGenerator* gen = 0;
173 TObjArray *partArray = gAlice->Particles();
176 // Generate the vertex position used by all generators
178 if(fVertexSmear == kPerEvent) Vertex();
182 // Loop over generators and generate events
185 while((entry = (AliGenCocktailEntry*)next())) {
190 entry->SetFirst((partArray->GetEntriesFast())+1);
193 // Handle case in which current generator needs collision geometry from previous generator
195 gen = entry->Generator();
196 if (gen->NeedsCollisionGeometry())
198 if (preventry && preventry->Generator()->ProvidesCollisionGeometry())
200 gen->SetCollisionGeometry(preventry->Generator()->CollisionGeometry());
202 Fatal("Generate()", "No Collision Geometry Provided");
205 entry->Generator()->SetVertex(fVertex.At(0), fVertex.At(1), fVertex.At(2));
206 entry->Generator()->Generate();
207 entry->SetLast(partArray->GetEntriesFast());
213 AliGenCocktailEntry * AliGenCocktail::FirstGenerator()
215 // Iterator over generators: Initialisation
216 flnk1 = fEntries->FirstLink();
218 return (AliGenCocktailEntry*) (flnk1->GetObject());
224 AliGenCocktailEntry* AliGenCocktail::NextGenerator()
226 // Iterator over generators: Increment
227 flnk1 = flnk1->Next();
229 return (AliGenCocktailEntry*) (flnk1->GetObject());
235 void AliGenCocktail::
236 FirstGeneratorPair(AliGenCocktailEntry*& e1, AliGenCocktailEntry*& e2)
238 // Iterator over generator pairs: Initialisation
239 flnk2 = flnk1 = fEntries->FirstLink();
241 e2 = e1 = (AliGenCocktailEntry*) (flnk1->GetObject());
247 void AliGenCocktail::
248 NextGeneratorPair(AliGenCocktailEntry*& e1, AliGenCocktailEntry*& e2)
250 // Iterator over generators: Increment
251 flnk2 = flnk2->Next();
253 e1 = (AliGenCocktailEntry*) (flnk1->GetObject());
254 e2 = (AliGenCocktailEntry*) (flnk2->GetObject());
256 flnk2 = flnk1 = flnk1->Next();
258 e1 = (AliGenCocktailEntry*) (flnk1->GetObject());
259 e2 = (AliGenCocktailEntry*) (flnk2->GetObject());
267 AliGenCocktail& AliGenCocktail::operator=(const AliGenCocktail& rhs)
269 // Assignment operator