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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 | |
81 | AliMC* pMC = AliMC::GetMC(); |
82 | |
83 | Float_t polar[3]= {0,0,0}; |
84 | // |
85 | Float_t origin[3]={0,0,0}; |
86 | Float_t p[3]; |
87 | Float_t random[6]; |
88 | Float_t prwn; |
89 | char name[100]; |
90 | Float_t amass, charge, tlife; |
91 | Int_t itrtyp; |
9b153ba2 |
92 | Int_t i, j, nt, Ntracks=0; |
693caace |
93 | // |
94 | NtupleInit(); |
95 | TTree *h2=fTreeNtuple; |
96 | Int_t nentries = (Int_t) h2->GetEntries(); |
97 | // loop over number of particles |
98 | Int_t nb = (Int_t)h2->GetEvent(fNcurrent); |
99 | Int_t i5=Ihead[4]; |
100 | Int_t i6=Ihead[5]; |
101 | |
102 | for (j=0;j<3;j++) origin[j]=fOrigin[j]; |
103 | if(fVertexSmear==perEvent) { |
104 | pMC->Rndm(random,6); |
105 | for (j=0;j<3;j++) { |
106 | origin[j]+=fOsigma[j]*TMath::Cos(2*random[2*j]*TMath::Pi())* |
107 | TMath::Sqrt(-2*TMath::Log(random[2*j+1])); |
108 | } |
109 | } |
110 | |
111 | if (fNcurrent >= nentries) { |
112 | printf("\n No more entries !!! !\n"); |
113 | return; |
114 | } |
115 | |
116 | |
117 | if (i5==0) { |
118 | printf("\n This should never happen !\n"); |
119 | } else { |
120 | printf("\n Next event contains %d tracks! \n", i6); |
121 | Ntracks=i6; |
122 | } |
123 | for (i=0; i<Ntracks; i++) { |
124 | |
125 | pMC->Gfpart(Idpart, name, itrtyp,amass, charge, tlife); |
126 | prwn=sqrt((E+amass)*(E-amass)); |
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) { |
141 | pMC->Rndm(random,6); |
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 | |
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