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 "TSystem.h"
27 //#include "TUnixSystem.h"
28 #include "TParticle.h"
31 #include "AliGenMevSim.h"
34 static TRandom * sRandom;
36 ClassImp(AliGenMevSim)
38 //____________________________________________________________________________
39 AliGenMevSim::AliGenMevSim() : AliGenerator(-1)
45 fConfig = new AliMevSimConfig();
46 fMevSim = new TMevSim();
50 //____________________________________________________________________________
51 AliGenMevSim::AliGenMevSim(AliMevSimConfig *config): AliGenerator(-1) {
54 fMevSim = new TMevSim();
58 //____________________________________________________________________________
59 AliGenMevSim::~AliGenMevSim()
62 // Standard destructor
64 if (fMevSim) delete fMevSim;
66 //____________________________________________________________________________
67 void AliGenMevSim::SetConfig(AliMevSimConfig *config) {
71 //____________________________________________________________________________
72 void AliGenMevSim::AddParticleType(AliMevSimParticle *type) {
74 fMevSim->AddPartTypeParams((TMevSimPartTypeParams*)type);
76 //____________________________________________________________________________
77 void AliGenMevSim::Init()
80 // Generator initialisation method
83 // fill data from AliMevSimConfig;
85 TMevSim *mevsim = fMevSim;
87 // geometry & momentum cut
89 if (TestBit(kPtRange)) mevsim->SetPtCutRange(fPtMin, fPtMax);
91 if (TestBit(kPhiRange)) // from radians to 0 - 360 deg
92 mevsim->SetPhiCutRange( fPhiMin * 180 / TMath::Pi() , fPhiMax * 180 / TMath::Pi() );
94 if (TestBit(kThetaRange)) // from theta to eta
96 mevsim->SetEtaCutRange( -TMath::Log( TMath::Tan(fThetaMax/2)) , -TMath::Log( TMath::Tan(fThetaMin/2)) );
99 // mevsim specyfic parameters
101 mevsim->SetModelType(fConfig->GetModelType());
102 Int_t ctrl; Float_t psiRMean = 0; Float_t psiRStDev = 0;
103 fConfig->GetRectPlane(ctrl,psiRMean,psiRStDev);
104 mevsim->SetReacPlaneCntrl(ctrl);
105 mevsim->SetPsiRParams(psiRMean, psiRStDev);
106 Float_t mean; Float_t stDev;
107 fConfig->GetMultFac(mean,stDev);
108 mevsim->SetMultFacParams(mean,stDev);
109 // mevsim initialisation
111 mevsim->Initialize();
114 //____________________________________________________________________________
115 void AliGenMevSim::Generate()
118 // Read the formatted output file and load the particles
119 // Temporary solution
125 Float_t orgin[3] = {0,0,0};
126 Float_t polar[3] = {0,0,0};
127 Float_t p[3] = {1,1,1};
130 const Int_t parent = -1;
137 orgin[0] = fVertex[0];
138 orgin[1] = fVertex[1];
139 orgin[2] = fVertex[2];
143 cout << orgin[i] << "\t";
146 Int_t nParticles = 0;
148 TClonesArray *particles = new TClonesArray("TParticle");
151 fMevSim->GenerateEvent();
152 fNpart= fMevSim->ImportParticles(particles,"");
154 cout << "Found " << fNpart << " particles ..." << endl;
157 for (i=0; i<nParticles; i++) {
159 particle = (TParticle*) (*particles)[i];
161 pdg = (PDG_t) particle->GetPdgCode();
162 p[0] = particle->Px();
163 p[1] = particle->Py();
164 p[2] = particle->Pz();
166 PushTrack(fTrackIt, parent, pdg, p, orgin, polar, time, kPPrimary, id);
171 if (particles) delete particles;
173 //____________________________________________________________________________
174 //____________________________________________________________________________
179 # define type_of_call
182 # define type_of_call _stdcall
185 extern "C" Float_t type_of_call ran(Int_t &)
187 return sRandom->Rndm();
190 //____________________________________________________________________________