]>
Commit | Line | Data |
---|---|---|
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 | $Log$ | |
3c8636e9 | 18 | Revision 1.6 1999/11/09 07:38:48 fca |
19 | Changes for compatibility with version 2.23 of ROOT | |
20 | ||
084c1b4a | 21 | Revision 1.5 1999/09/29 09:24:12 fca |
22 | Introduction of the Copyright and cvs Log | |
23 | ||
4c039060 | 24 | */ |
25 | ||
084c1b4a | 26 | #include <iostream.h> |
27 | ||
693caace | 28 | #include "AliGenExtFile.h" |
29 | #include "AliGenMUONlib.h" | |
30 | #include "AliMC.h" | |
31 | #include "AliRun.h" | |
32 | #include <TDirectory.h> | |
33 | #include <TFile.h> | |
34 | #include <TTree.h> | |
35 | #include <stdlib.h> | |
36 | ClassImp(AliGenExtFile) | |
37 | AliGenExtFile::AliGenExtFile() | |
38 | :AliGenerator(-1) | |
39 | { | |
40 | // | |
41 | fName="ExtFile"; | |
42 | fTitle="Primaries from ext. File"; | |
43 | fFileName="dtujet93.root"; | |
44 | fTreeNtuple=0; | |
45 | fNcurrent=0; | |
46 | // | |
47 | // Read all particles | |
48 | fNpart=-1; | |
49 | } | |
50 | ||
51 | AliGenExtFile::AliGenExtFile(Int_t npart) | |
52 | :AliGenerator(npart) | |
53 | { | |
54 | // | |
55 | fName="ExtFile"; | |
56 | fTitle="Primaries from ext. File"; | |
57 | fFileName="dtujet93.root"; | |
58 | fTreeNtuple=0; | |
59 | fNcurrent=0; | |
60 | } | |
61 | ||
62 | //____________________________________________________________ | |
63 | AliGenExtFile::~AliGenExtFile() | |
64 | { | |
65 | delete fTreeNtuple; | |
66 | } | |
67 | ||
68 | //____________________________________________________________ | |
69 | void AliGenExtFile::NtupleInit() | |
70 | { | |
71 | // | |
72 | // reset the existing file environment and open a new root file if | |
73 | // the pointer to the Fluka tree is null | |
74 | ||
75 | TFile *File=0; | |
76 | if (fTreeNtuple==0) { | |
77 | if (!File) { | |
78 | File = new TFile(fFileName); | |
79 | File->cd(); | |
80 | cout<<"I have opened "<<fFileName<<" file "<<endl; | |
81 | } | |
82 | // get the tree address in the Fluka boundary source file | |
83 | fTreeNtuple = (TTree*)gDirectory->Get("h888"); | |
84 | } else { | |
85 | File = fTreeNtuple->GetCurrentFile(); | |
86 | File->cd(); | |
87 | } | |
88 | ||
89 | TTree *h2=fTreeNtuple; | |
90 | //Set branch addresses | |
91 | //Set branch addresses | |
92 | h2->SetBranchAddress("Nihead",&Nihead); | |
93 | h2->SetBranchAddress("Ihead",Ihead); | |
94 | h2->SetBranchAddress("Nrhead",&Nrhead); | |
95 | h2->SetBranchAddress("Rhead",Rhead); | |
96 | h2->SetBranchAddress("Idpart",&Idpart); | |
97 | h2->SetBranchAddress("Theta",&Theta); | |
98 | h2->SetBranchAddress("Phi",&Phi); | |
99 | h2->SetBranchAddress("P",&P); | |
100 | h2->SetBranchAddress("E",&E); | |
101 | } | |
102 | ||
103 | ||
104 | //____________________________________________________________ | |
105 | void AliGenExtFile::Generate() | |
106 | { | |
107 | ||
693caace | 108 | Float_t polar[3]= {0,0,0}; |
109 | // | |
110 | Float_t origin[3]={0,0,0}; | |
111 | Float_t p[3]; | |
112 | Float_t random[6]; | |
113 | Float_t prwn; | |
9b153ba2 | 114 | Int_t i, j, nt, Ntracks=0; |
693caace | 115 | // |
116 | NtupleInit(); | |
117 | TTree *h2=fTreeNtuple; | |
118 | Int_t nentries = (Int_t) h2->GetEntries(); | |
119 | // loop over number of particles | |
120 | Int_t nb = (Int_t)h2->GetEvent(fNcurrent); | |
121 | Int_t i5=Ihead[4]; | |
122 | Int_t i6=Ihead[5]; | |
123 | ||
124 | for (j=0;j<3;j++) origin[j]=fOrigin[j]; | |
125 | if(fVertexSmear==perEvent) { | |
cfce8870 | 126 | gMC->Rndm(random,6); |
693caace | 127 | for (j=0;j<3;j++) { |
128 | origin[j]+=fOsigma[j]*TMath::Cos(2*random[2*j]*TMath::Pi())* | |
129 | TMath::Sqrt(-2*TMath::Log(random[2*j+1])); | |
130 | } | |
131 | } | |
132 | ||
133 | if (fNcurrent >= nentries) { | |
134 | printf("\n No more entries !!! !\n"); | |
135 | return; | |
136 | } | |
137 | ||
138 | ||
139 | if (i5==0) { | |
140 | printf("\n This should never happen !\n"); | |
141 | } else { | |
142 | printf("\n Next event contains %d tracks! \n", i6); | |
143 | Ntracks=i6; | |
144 | } | |
145 | for (i=0; i<Ntracks; i++) { | |
3c8636e9 | 146 | Idpart=gMC->PDGFromId(Idpart); |
c7a01d5a | 147 | Double_t amass = TDatabasePDG::Instance()->GetParticle(Idpart)->Mass(); |
148 | if(E<=amass) { | |
3c8636e9 | 149 | Warning("Generate","Particle %d no %d E = %f mass = %f\n", |
150 | Idpart,i,E,amass); | |
c7a01d5a | 151 | prwn=0; |
152 | } else { | |
153 | prwn=sqrt((E+amass)*(E-amass)); | |
154 | } | |
693caace | 155 | |
156 | Theta *= TMath::Pi()/180.; | |
157 | Phi = (Phi-180)*TMath::Pi()/180.; | |
158 | if(Theta<fThetaMin || Theta>fThetaMax || | |
159 | Phi<fPhiMin || Phi>fPhiMax || | |
160 | prwn<fPMin || prwn>fPMax) | |
161 | { | |
162 | ; | |
163 | } else { | |
164 | p[0]=prwn*TMath::Sin(Theta)*TMath::Cos(Phi); | |
165 | p[1]=prwn*TMath::Sin(Theta)*TMath::Sin(Phi); | |
166 | p[2]=prwn*TMath::Cos(Theta); | |
167 | ||
168 | if(fVertexSmear==perTrack) { | |
cfce8870 | 169 | gMC->Rndm(random,6); |
693caace | 170 | for (j=0;j<3;j++) { |
171 | origin[j]=fOrigin[j] | |
172 | +fOsigma[j]*TMath::Cos(2*random[2*j]*TMath::Pi())* | |
173 | TMath::Sqrt(-2*TMath::Log(random[2*j+1])); | |
174 | } | |
175 | } | |
176 | gAlice->SetTrack(fTrackIt,-1,Idpart,p,origin,polar,0,"Primary",nt); | |
177 | } | |
178 | fNcurrent++; | |
179 | nb = (Int_t)h2->GetEvent(fNcurrent); | |
180 | } | |
181 | ||
182 | TFile *File=0; | |
183 | // Get AliRun object or create it | |
184 | if (!gAlice) { | |
185 | gAlice = (AliRun*)File->Get("gAlice"); | |
186 | if (gAlice) printf("AliRun object found on file\n"); | |
187 | if (!gAlice) gAlice = new AliRun("gAlice","Alice test program"); | |
188 | } | |
189 | TTree *fAli=gAlice->TreeK(); | |
190 | if (fAli) File =fAli->GetCurrentFile(); | |
191 | File->cd(); | |
192 | } | |
193 | ||
194 | ||
195 | ||
196 | ||
197 | ||
198 | ||
199 | ||
200 | ||
201 |