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 **************************************************************************/
19 // Wrapper for MEVSIM generator.
20 // It is using TMevSim to comunicate with fortarn code
23 // Sylwester Radomski <radomski@if.pw.edu.pl>
26 #include "TParticle.h"
27 #include <Riostream.h>
29 #include "AliGenMevSim.h"
30 #include "AliMevSimConfig.h"
31 #include "AliMevSimParticle.h"
35 static TRandom * gAliRandom;
37 ClassImp(AliGenMevSim)
39 //____________________________________________________________________________
40 AliGenMevSim::AliGenMevSim() : AliGenerator(-1)
45 fConfig = new AliMevSimConfig();
46 fMevSim = new TMevSim();
50 //____________________________________________________________________________
51 AliGenMevSim::AliGenMevSim(AliMevSimConfig *config): AliGenerator(-1)
57 fMevSim = new TMevSim();
61 //____________________________________________________________________________
62 AliGenMevSim::~AliGenMevSim()
65 // Standard destructor
67 if (fMevSim) delete fMevSim;
69 //____________________________________________________________________________
70 void AliGenMevSim::SetConfig(AliMevSimConfig *config)
73 // Sets the MevSim configuration
78 //____________________________________________________________________________
79 void AliGenMevSim::AddParticleType(AliMevSimParticle *type)
82 // Add one particle type to MevSim
84 fMevSim->AddPartTypeParams((TMevSimPartTypeParams*)type);
87 //____________________________________________________________________________
88 void AliGenMevSim::Init()
91 // Generator initialisation method
94 // fill data from AliMevSimConfig;
96 TMevSim *mevsim = fMevSim;
98 // geometry & momentum cut
100 if (TestBit(kPtRange)) mevsim->SetPtCutRange(fPtMin, fPtMax);
102 if (TestBit(kPhiRange)) // from radians to 0 - 360 deg
103 mevsim->SetPhiCutRange( fPhiMin * 180 / TMath::Pi() , fPhiMax * 180 / TMath::Pi() );
105 if (TestBit(kThetaRange)) // from theta to eta
107 mevsim->SetEtaCutRange( -TMath::Log( TMath::Tan(fThetaMax/2)) , -TMath::Log( TMath::Tan(fThetaMin/2)) );
110 // mevsim specyfic parameters
112 mevsim->SetModelType(fConfig->GetModelType());
113 Int_t ctrl; Float_t psiRMean = 0; Float_t psiRStDev = 0;
114 fConfig->GetRectPlane(ctrl,psiRMean,psiRStDev);
115 mevsim->SetReacPlaneCntrl(ctrl);
116 mevsim->SetPsiRParams(psiRMean, psiRStDev);
117 Float_t mean; Float_t stDev;
118 fConfig->GetMultFac(mean,stDev);
119 mevsim->SetMultFacParams(mean,stDev);
120 // mevsim initialisation
122 mevsim->Initialize();
125 //____________________________________________________________________________
126 void AliGenMevSim::Generate()
129 // Read the formatted output file and load the particles
130 // Temporary solution
136 Float_t orgin[3] = {0,0,0};
137 Float_t polar[3] = {0,0,0};
138 Float_t p[3] = {1,1,1};
141 const Int_t kParent = -1;
148 orgin[0] = fVertex[0];
149 orgin[1] = fVertex[1];
150 orgin[2] = fVertex[2];
154 cout << orgin[i] << "\t";
157 Int_t nParticles = 0;
159 TClonesArray *particles = new TClonesArray("TParticle");
162 fMevSim->GenerateEvent();
163 fNpart= fMevSim->ImportParticles(particles,"");
165 cout << "Found " << fNpart << " particles ..." << endl;
168 for (i=0; i<nParticles; i++) {
170 particle = (TParticle*) (*particles)[i];
172 pdg = (PDG_t) particle->GetPdgCode();
173 p[0] = particle->Px();
174 p[1] = particle->Py();
175 p[2] = particle->Pz();
177 PushTrack(fTrackIt, kParent, pdg, p, orgin, polar, time, kPPrimary, id);
182 if (particles) delete particles;
185 //____________________________________________________________________________
188 # define type_of_call
191 # define type_of_call _stdcall
194 extern "C" Float_t type_of_call ran(Int_t &)
197 // Replacement for package random number generator
199 return gAliRandom->Rndm();