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693caace | 1 | #include "AliGenExtFile.h" |
2 | #include "AliGenMUONlib.h" | |
3 | #include "AliMC.h" | |
4 | #include "AliRun.h" | |
5 | #include <TDirectory.h> | |
6 | #include <TFile.h> | |
7 | #include <TTree.h> | |
8 | #include <stdlib.h> | |
9 | ClassImp(AliGenExtFile) | |
10 | AliGenExtFile::AliGenExtFile() | |
11 | :AliGenerator(-1) | |
12 | { | |
13 | // | |
14 | fName="ExtFile"; | |
15 | fTitle="Primaries from ext. File"; | |
16 | fFileName="dtujet93.root"; | |
17 | fTreeNtuple=0; | |
18 | fNcurrent=0; | |
19 | // | |
20 | // Read all particles | |
21 | fNpart=-1; | |
22 | } | |
23 | ||
24 | AliGenExtFile::AliGenExtFile(Int_t npart) | |
25 | :AliGenerator(npart) | |
26 | { | |
27 | // | |
28 | fName="ExtFile"; | |
29 | fTitle="Primaries from ext. File"; | |
30 | fFileName="dtujet93.root"; | |
31 | fTreeNtuple=0; | |
32 | fNcurrent=0; | |
33 | } | |
34 | ||
35 | //____________________________________________________________ | |
36 | AliGenExtFile::~AliGenExtFile() | |
37 | { | |
38 | delete fTreeNtuple; | |
39 | } | |
40 | ||
41 | //____________________________________________________________ | |
42 | void AliGenExtFile::NtupleInit() | |
43 | { | |
44 | // | |
45 | // reset the existing file environment and open a new root file if | |
46 | // the pointer to the Fluka tree is null | |
47 | ||
48 | TFile *File=0; | |
49 | if (fTreeNtuple==0) { | |
50 | if (!File) { | |
51 | File = new TFile(fFileName); | |
52 | File->cd(); | |
53 | cout<<"I have opened "<<fFileName<<" file "<<endl; | |
54 | } | |
55 | // get the tree address in the Fluka boundary source file | |
56 | fTreeNtuple = (TTree*)gDirectory->Get("h888"); | |
57 | } else { | |
58 | File = fTreeNtuple->GetCurrentFile(); | |
59 | File->cd(); | |
60 | } | |
61 | ||
62 | TTree *h2=fTreeNtuple; | |
63 | //Set branch addresses | |
64 | //Set branch addresses | |
65 | h2->SetBranchAddress("Nihead",&Nihead); | |
66 | h2->SetBranchAddress("Ihead",Ihead); | |
67 | h2->SetBranchAddress("Nrhead",&Nrhead); | |
68 | h2->SetBranchAddress("Rhead",Rhead); | |
69 | h2->SetBranchAddress("Idpart",&Idpart); | |
70 | h2->SetBranchAddress("Theta",&Theta); | |
71 | h2->SetBranchAddress("Phi",&Phi); | |
72 | h2->SetBranchAddress("P",&P); | |
73 | h2->SetBranchAddress("E",&E); | |
74 | } | |
75 | ||
76 | ||
77 | //____________________________________________________________ | |
78 | void AliGenExtFile::Generate() | |
79 | { | |
80 | ||
693caace | 81 | Float_t polar[3]= {0,0,0}; |
82 | // | |
83 | Float_t origin[3]={0,0,0}; | |
84 | Float_t p[3]; | |
85 | Float_t random[6]; | |
86 | Float_t prwn; | |
9b153ba2 | 87 | Int_t i, j, nt, Ntracks=0; |
693caace | 88 | // |
89 | NtupleInit(); | |
90 | TTree *h2=fTreeNtuple; | |
91 | Int_t nentries = (Int_t) h2->GetEntries(); | |
92 | // loop over number of particles | |
93 | Int_t nb = (Int_t)h2->GetEvent(fNcurrent); | |
94 | Int_t i5=Ihead[4]; | |
95 | Int_t i6=Ihead[5]; | |
96 | ||
97 | for (j=0;j<3;j++) origin[j]=fOrigin[j]; | |
98 | if(fVertexSmear==perEvent) { | |
cfce8870 | 99 | gMC->Rndm(random,6); |
693caace | 100 | for (j=0;j<3;j++) { |
101 | origin[j]+=fOsigma[j]*TMath::Cos(2*random[2*j]*TMath::Pi())* | |
102 | TMath::Sqrt(-2*TMath::Log(random[2*j+1])); | |
103 | } | |
104 | } | |
105 | ||
106 | if (fNcurrent >= nentries) { | |
107 | printf("\n No more entries !!! !\n"); | |
108 | return; | |
109 | } | |
110 | ||
111 | ||
112 | if (i5==0) { | |
113 | printf("\n This should never happen !\n"); | |
114 | } else { | |
115 | printf("\n Next event contains %d tracks! \n", i6); | |
116 | Ntracks=i6; | |
117 | } | |
118 | for (i=0; i<Ntracks; i++) { | |
119 | ||
c7a01d5a | 120 | Double_t amass = TDatabasePDG::Instance()->GetParticle(Idpart)->Mass(); |
121 | if(E<=amass) { | |
122 | Warning("Generate","Particle %d no %d E = %f mass = %f\n",Idpart,i,E,amass); | |
123 | prwn=0; | |
124 | } else { | |
125 | prwn=sqrt((E+amass)*(E-amass)); | |
126 | } | |
693caace | 127 | |
128 | Theta *= TMath::Pi()/180.; | |
129 | Phi = (Phi-180)*TMath::Pi()/180.; | |
130 | if(Theta<fThetaMin || Theta>fThetaMax || | |
131 | Phi<fPhiMin || Phi>fPhiMax || | |
132 | prwn<fPMin || prwn>fPMax) | |
133 | { | |
134 | ; | |
135 | } else { | |
136 | p[0]=prwn*TMath::Sin(Theta)*TMath::Cos(Phi); | |
137 | p[1]=prwn*TMath::Sin(Theta)*TMath::Sin(Phi); | |
138 | p[2]=prwn*TMath::Cos(Theta); | |
139 | ||
140 | if(fVertexSmear==perTrack) { | |
cfce8870 | 141 | gMC->Rndm(random,6); |
693caace | 142 | for (j=0;j<3;j++) { |
143 | origin[j]=fOrigin[j] | |
144 | +fOsigma[j]*TMath::Cos(2*random[2*j]*TMath::Pi())* | |
145 | TMath::Sqrt(-2*TMath::Log(random[2*j+1])); | |
146 | } | |
147 | } | |
148 | gAlice->SetTrack(fTrackIt,-1,Idpart,p,origin,polar,0,"Primary",nt); | |
149 | } | |
150 | fNcurrent++; | |
151 | nb = (Int_t)h2->GetEvent(fNcurrent); | |
152 | } | |
153 | ||
154 | TFile *File=0; | |
155 | // Get AliRun object or create it | |
156 | if (!gAlice) { | |
157 | gAlice = (AliRun*)File->Get("gAlice"); | |
158 | if (gAlice) printf("AliRun object found on file\n"); | |
159 | if (!gAlice) gAlice = new AliRun("gAlice","Alice test program"); | |
160 | } | |
161 | TTree *fAli=gAlice->TreeK(); | |
162 | if (fAli) File =fAli->GetCurrentFile(); | |
163 | File->cd(); | |
164 | } | |
165 | ||
166 | ||
167 | ||
168 | ||
169 | ||
170 | ||
171 | ||
172 | ||
173 |