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 1.17 2003/03/24 15:58:27 morsch
19 FinishRun() implemented.
21 Revision 1.16 2003/01/14 10:50:18 alibrary
22 Cleanup of STEER coding conventions
24 Revision 1.15 2003/01/07 14:13:22 morsch
25 Communication between generators provising and requesting collision
28 Revision 1.14 2002/02/08 16:50:50 morsch
29 Add name and title in constructor.
31 Revision 1.13 2001/10/21 18:35:56 hristov
32 Several pointers were set to zero in the default constructors to avoid memory management problems
34 Revision 1.12 2001/06/18 13:07:30 morsch
35 Forward kinematic ranges to entries only if not set by user.
37 Revision 1.11 2001/01/30 09:23:12 hristov
38 Streamers removed (R.Brun)
40 Revision 1.10 2001/01/26 19:55:49 hristov
41 Major upgrade of AliRoot code
43 Revision 1.9 2000/12/21 16:24:06 morsch
44 Coding convention clean-up
46 Revision 1.8 2000/10/27 13:53:29 morsch
47 AddGenerator: check testbit before setting the pT and momentum range
50 Revision 1.7 2000/10/02 15:15:41 morsch
51 Use default streamer for AliGenCocktail
53 Revision 1.6 2000/09/07 17:04:31 morsch
54 In Streamer: TIter() after R__b << fEntries (Dmitri Yurevitch Peressounko)
56 Revision 1.5 2000/06/09 20:28:51 morsch
57 All coding rule violations except RS3 corrected (AM)
59 Revision 1.4 1999/09/29 09:24:12 fca
60 Introduction of the Copyright and cvs Log
64 // Container class for AliGenerator through recursion.
65 // Container is itself an AliGenerator.
66 // What is stored are not the pointers to the generators directly but to objects of type
67 // AliGenCocktail entry.
68 // The class provides also iterator functionality.
69 // Author: andreas.morsch@cern.ch
73 #include <TObjArray.h>
75 #include "AliGenCocktail.h"
76 #include "AliGenCocktailEntry.h"
77 #include "AliCollisionGeometry.h"
80 ClassImp(AliGenCocktail)
82 AliGenCocktail::AliGenCocktail()
87 fTitle= "Particle Generator using cocktail of generators";
94 AliGenCocktail::AliGenCocktail(const AliGenCocktail & cocktail)
99 AliGenCocktail::~AliGenCocktail()
105 void AliGenCocktail::
106 AddGenerator(AliGenerator *Generator, char* Name, Float_t RateExp)
109 // Forward parameters to the new generator
110 if(TestBit(kPtRange) && !(Generator->TestBit(kPtRange)) && !(Generator->TestBit(kMomentumRange)))
111 Generator->SetPtRange(fPtMin,fPtMax);
112 if(TestBit(kMomentumRange) && !(Generator->TestBit(kPtRange)) && !(Generator->TestBit(kMomentumRange)))
113 Generator->SetMomentumRange(fPMin,fPMax);
115 if (!(Generator->TestBit(kYRange)))
116 Generator->SetYRange(fYMin,fYMax);
117 if (!(Generator->TestBit(kPhiRange)))
118 Generator->SetPhiRange(fPhiMin*180/TMath::Pi(),fPhiMax*180/TMath::Pi());
119 if (!(Generator->TestBit(kThetaRange)))
120 Generator->SetThetaRange(fThetaMin*180/TMath::Pi(),fThetaMax*180/TMath::Pi());
121 if (!(Generator->TestBit(kVertexRange)))
122 Generator->SetOrigin(fOrigin[0], fOrigin[1], fOrigin[2]);
124 SetSigma(fOsigma[0], fOsigma[1], fOsigma[2]);
125 Generator->SetVertexSmear(fVertexSmear);
126 Generator->SetTrackingFlag(fTrackIt);
128 // Add generator to list
130 AliGenCocktailEntry *entry =
131 new AliGenCocktailEntry(Generator, Name, RateExp);
132 fEntries->Add(entry);
136 void AliGenCocktail::Init()
139 TIter next(fEntries);
140 AliGenCocktailEntry *entry;
142 // Loop over generators and initialize
143 while((entry = (AliGenCocktailEntry*)next())) {
144 entry->Generator()->Init();
148 void AliGenCocktail::FinishRun()
151 TIter next(fEntries);
152 AliGenCocktailEntry *entry;
154 // Loop over generators and initialize
155 while((entry = (AliGenCocktailEntry*)next())) {
156 entry->Generator()->FinishRun();
160 void AliGenCocktail::Generate()
164 TIter next(fEntries);
165 AliGenCocktailEntry *entry = 0;
166 AliGenCocktailEntry *preventry = 0;
167 AliGenerator* gen = 0;
169 TObjArray *partArray = gAlice->Particles();
171 // Loop over generators and generate events
174 while((entry = (AliGenCocktailEntry*)next())) {
179 entry->SetFirst((partArray->GetEntriesFast())+1);
182 // Handle case in which current generator needs collision geometry from previous generator
184 gen = entry->Generator();
185 if (gen->NeedsCollisionGeometry())
187 if (preventry && preventry->Generator()->ProvidesCollisionGeometry())
189 gen->SetCollisionGeometry(preventry->Generator()->CollisionGeometry());
191 Fatal("Generate()", "No Collision Geometry Provided");
195 entry->Generator()->Generate();
196 entry->SetLast(partArray->GetEntriesFast());
202 AliGenCocktailEntry * AliGenCocktail::FirstGenerator()
204 // Iterator over generators: Initialisation
205 flnk1 = fEntries->FirstLink();
207 return (AliGenCocktailEntry*) (flnk1->GetObject());
213 AliGenCocktailEntry* AliGenCocktail::NextGenerator()
215 // Iterator over generators: Increment
216 flnk1 = flnk1->Next();
218 return (AliGenCocktailEntry*) (flnk1->GetObject());
224 void AliGenCocktail::
225 FirstGeneratorPair(AliGenCocktailEntry*& e1, AliGenCocktailEntry*& e2)
227 // Iterator over generator pairs: Initialisation
228 flnk2 = flnk1 = fEntries->FirstLink();
230 e2 = e1 = (AliGenCocktailEntry*) (flnk1->GetObject());
236 void AliGenCocktail::
237 NextGeneratorPair(AliGenCocktailEntry*& e1, AliGenCocktailEntry*& e2)
239 // Iterator over generators: Increment
240 flnk2 = flnk2->Next();
242 e1 = (AliGenCocktailEntry*) (flnk1->GetObject());
243 e2 = (AliGenCocktailEntry*) (flnk2->GetObject());
245 flnk2 = flnk1 = flnk1->Next();
247 e1 = (AliGenCocktailEntry*) (flnk1->GetObject());
248 e2 = (AliGenCocktailEntry*) (flnk2->GetObject());
256 AliGenCocktail& AliGenCocktail::operator=(const AliGenCocktail& rhs)
258 // Assignment operator