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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 | ||
16 | /* | |
17 | $Log$ | |
675e9664 | 18 | Revision 1.13 2000/11/30 07:12:50 alibrary |
19 | Introducing new Rndm and QA classes | |
20 | ||
65fb704d | 21 | Revision 1.12 2000/10/27 13:54:45 morsch |
22 | Remove explicite reference to input file from constuctor. | |
23 | ||
38e6c6e6 | 24 | Revision 1.11 2000/10/02 21:28:06 fca |
25 | Removal of useless dependecies via forward declarations | |
26 | ||
94de3818 | 27 | Revision 1.10 2000/07/11 18:24:55 fca |
28 | Coding convention corrections + few minor bug fixes | |
29 | ||
aee8290b | 30 | Revision 1.9 2000/06/14 15:20:09 morsch |
31 | Include clean-up (IH) | |
32 | ||
5c3fd7ea | 33 | Revision 1.8 2000/06/09 20:36:44 morsch |
34 | All coding rule violations except RS3 corrected | |
35 | ||
f87cfe57 | 36 | Revision 1.7 2000/02/16 14:56:27 morsch |
37 | Convert geant particle code into pdg code before putting particle on the stack. | |
38 | ||
3c8636e9 | 39 | Revision 1.6 1999/11/09 07:38:48 fca |
40 | Changes for compatibility with version 2.23 of ROOT | |
41 | ||
084c1b4a | 42 | Revision 1.5 1999/09/29 09:24:12 fca |
43 | Introduction of the Copyright and cvs Log | |
44 | ||
4c039060 | 45 | */ |
46 | ||
675e9664 | 47 | |
48 | // Event generator that can read the old ALICE event format based on CW-ntuples | |
49 | // http://consult.cern.ch/alice/Internal_Notes/1995/32/abstract | |
50 | // .cwn file have to be converted to .root using h2root | |
51 | // Use SetFileName(file) to read from "file" | |
52 | // Author: andreas.morsch@cern.ch | |
53 | ||
084c1b4a | 54 | #include <iostream.h> |
55 | ||
693caace | 56 | #include "AliGenExtFile.h" |
693caace | 57 | #include "AliMC.h" |
58 | #include "AliRun.h" | |
5c3fd7ea | 59 | |
693caace | 60 | #include <TDirectory.h> |
94de3818 | 61 | #include <TDatabasePDG.h> |
693caace | 62 | #include <TFile.h> |
675e9664 | 63 | #include "TTree.h" |
693caace | 64 | #include <stdlib.h> |
5c3fd7ea | 65 | |
693caace | 66 | ClassImp(AliGenExtFile) |
67 | AliGenExtFile::AliGenExtFile() | |
68 | :AliGenerator(-1) | |
69 | { | |
f87cfe57 | 70 | // Constructor |
693caace | 71 | fName="ExtFile"; |
72 | fTitle="Primaries from ext. File"; | |
38e6c6e6 | 73 | fFileName=""; |
693caace | 74 | fTreeNtuple=0; |
75 | fNcurrent=0; | |
76 | // | |
77 | // Read all particles | |
78 | fNpart=-1; | |
79 | } | |
80 | ||
81 | AliGenExtFile::AliGenExtFile(Int_t npart) | |
82 | :AliGenerator(npart) | |
83 | { | |
f87cfe57 | 84 | // Constructor |
693caace | 85 | fName="ExtFile"; |
86 | fTitle="Primaries from ext. File"; | |
38e6c6e6 | 87 | fFileName=""; |
693caace | 88 | fTreeNtuple=0; |
89 | fNcurrent=0; | |
90 | } | |
91 | ||
f87cfe57 | 92 | AliGenExtFile::AliGenExtFile(const AliGenExtFile & ExtFile) |
93 | { | |
94 | // copy constructor | |
95 | } | |
693caace | 96 | //____________________________________________________________ |
97 | AliGenExtFile::~AliGenExtFile() | |
98 | { | |
f87cfe57 | 99 | // Destructor |
693caace | 100 | delete fTreeNtuple; |
101 | } | |
102 | ||
103 | //____________________________________________________________ | |
104 | void AliGenExtFile::NtupleInit() | |
105 | { | |
106 | // | |
107 | // reset the existing file environment and open a new root file if | |
108 | // the pointer to the Fluka tree is null | |
109 | ||
f87cfe57 | 110 | TFile *pFile=0; |
693caace | 111 | if (fTreeNtuple==0) { |
f87cfe57 | 112 | if (!pFile) { |
113 | pFile = new TFile(fFileName); | |
114 | pFile->cd(); | |
693caace | 115 | cout<<"I have opened "<<fFileName<<" file "<<endl; |
116 | } | |
117 | // get the tree address in the Fluka boundary source file | |
118 | fTreeNtuple = (TTree*)gDirectory->Get("h888"); | |
119 | } else { | |
f87cfe57 | 120 | pFile = fTreeNtuple->GetCurrentFile(); |
121 | pFile->cd(); | |
693caace | 122 | } |
123 | ||
124 | TTree *h2=fTreeNtuple; | |
125 | //Set branch addresses | |
126 | //Set branch addresses | |
f87cfe57 | 127 | h2->SetBranchAddress("Nihead",&fNihead); |
128 | h2->SetBranchAddress("Ihead",fIhead); | |
129 | h2->SetBranchAddress("Nrhead",&fNrhead); | |
130 | h2->SetBranchAddress("Rhead",fRhead); | |
131 | h2->SetBranchAddress("Idpart",&fIdpart); | |
132 | h2->SetBranchAddress("Theta",&fTheta); | |
133 | h2->SetBranchAddress("Phi",&fPhi); | |
134 | h2->SetBranchAddress("P",&fP); | |
135 | h2->SetBranchAddress("E",&fE); | |
693caace | 136 | } |
137 | ||
138 | ||
139 | //____________________________________________________________ | |
140 | void AliGenExtFile::Generate() | |
141 | { | |
f87cfe57 | 142 | // Generate particles |
693caace | 143 | |
693caace | 144 | Float_t polar[3]= {0,0,0}; |
145 | // | |
146 | Float_t origin[3]={0,0,0}; | |
147 | Float_t p[3]; | |
148 | Float_t random[6]; | |
149 | Float_t prwn; | |
f87cfe57 | 150 | Int_t i, j, nt, nTracks=0; |
693caace | 151 | // |
152 | NtupleInit(); | |
153 | TTree *h2=fTreeNtuple; | |
154 | Int_t nentries = (Int_t) h2->GetEntries(); | |
155 | // loop over number of particles | |
156 | Int_t nb = (Int_t)h2->GetEvent(fNcurrent); | |
f87cfe57 | 157 | Int_t i5=fIhead[4]; |
158 | Int_t i6=fIhead[5]; | |
693caace | 159 | |
160 | for (j=0;j<3;j++) origin[j]=fOrigin[j]; | |
aee8290b | 161 | if(fVertexSmear==kPerTrack) { |
65fb704d | 162 | Rndm(random,6); |
693caace | 163 | for (j=0;j<3;j++) { |
164 | origin[j]+=fOsigma[j]*TMath::Cos(2*random[2*j]*TMath::Pi())* | |
165 | TMath::Sqrt(-2*TMath::Log(random[2*j+1])); | |
166 | } | |
167 | } | |
168 | ||
169 | if (fNcurrent >= nentries) { | |
170 | printf("\n No more entries !!! !\n"); | |
171 | return; | |
172 | } | |
173 | ||
174 | ||
175 | if (i5==0) { | |
176 | printf("\n This should never happen !\n"); | |
177 | } else { | |
178 | printf("\n Next event contains %d tracks! \n", i6); | |
f87cfe57 | 179 | nTracks=i6; |
693caace | 180 | } |
f87cfe57 | 181 | for (i=0; i<nTracks; i++) { |
182 | fIdpart=gMC->PDGFromId(fIdpart); | |
183 | Double_t amass = TDatabasePDG::Instance()->GetParticle(fIdpart)->Mass(); | |
184 | if(fE<=amass) { | |
38e6c6e6 | 185 | Warning("Generate","Particle %d no %d E = %f mass = %f %f %f \n", |
186 | fIdpart,i,fE,amass, fPhi, fTheta); | |
c7a01d5a | 187 | prwn=0; |
188 | } else { | |
f87cfe57 | 189 | prwn=sqrt((fE+amass)*(fE-amass)); |
c7a01d5a | 190 | } |
693caace | 191 | |
f87cfe57 | 192 | fTheta *= TMath::Pi()/180.; |
193 | fPhi = (fPhi-180)*TMath::Pi()/180.; | |
194 | if(fTheta<fThetaMin || fTheta>fThetaMax || | |
195 | fPhi<fPhiMin || fPhi>fPhiMax || | |
693caace | 196 | prwn<fPMin || prwn>fPMax) |
197 | { | |
198 | ; | |
199 | } else { | |
f87cfe57 | 200 | p[0]=prwn*TMath::Sin(fTheta)*TMath::Cos(fPhi); |
201 | p[1]=prwn*TMath::Sin(fTheta)*TMath::Sin(fPhi); | |
202 | p[2]=prwn*TMath::Cos(fTheta); | |
693caace | 203 | |
aee8290b | 204 | if(fVertexSmear==kPerTrack) { |
65fb704d | 205 | Rndm(random,6); |
693caace | 206 | for (j=0;j<3;j++) { |
207 | origin[j]=fOrigin[j] | |
208 | +fOsigma[j]*TMath::Cos(2*random[2*j]*TMath::Pi())* | |
209 | TMath::Sqrt(-2*TMath::Log(random[2*j+1])); | |
210 | } | |
211 | } | |
65fb704d | 212 | gAlice->SetTrack(fTrackIt,-1,fIdpart,p,origin,polar,0,kPPrimary,nt); |
693caace | 213 | } |
214 | fNcurrent++; | |
215 | nb = (Int_t)h2->GetEvent(fNcurrent); | |
216 | } | |
217 | ||
f87cfe57 | 218 | TFile *pFile=0; |
693caace | 219 | // Get AliRun object or create it |
220 | if (!gAlice) { | |
f87cfe57 | 221 | gAlice = (AliRun*)pFile->Get("gAlice"); |
693caace | 222 | if (gAlice) printf("AliRun object found on file\n"); |
223 | if (!gAlice) gAlice = new AliRun("gAlice","Alice test program"); | |
224 | } | |
225 | TTree *fAli=gAlice->TreeK(); | |
f87cfe57 | 226 | if (fAli) pFile =fAli->GetCurrentFile(); |
227 | pFile->cd(); | |
693caace | 228 | } |
229 | ||
230 | ||
f87cfe57 | 231 | AliGenExtFile& AliGenExtFile::operator=(const AliGenExtFile& rhs) |
232 | { | |
233 | // Assignment operator | |
234 | return *this; | |
235 | } | |
236 | ||
693caace | 237 | |
238 | ||
239 | ||
240 | ||
241 | ||
242 | ||
243 |