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81f7fe9f | 1 | #include "AliHBTReaderKineTree.h" |
2 | ||
3 | #include <iostream.h> | |
4 | //#include <fstream.h> | |
5 | #include <TString.h> | |
6 | #include <TObjString.h> | |
7 | #include <TTree.h> | |
8 | #include <TFile.h> | |
9 | #include <TParticle.h> | |
10 | ||
11 | #include <AliRun.h> | |
12 | #include <AliStack.h> | |
13 | #include <AliHeader.h> | |
14 | ||
15 | #include "AliHBTRun.h" | |
16 | #include "AliHBTEvent.h" | |
17 | #include "AliHBTParticle.h" | |
18 | #include "AliHBTParticleCut.h" | |
19 | ||
20 | ClassImp(AliHBTReaderKineTree) | |
21 | /**********************************************************/ | |
22 | ||
23 | AliHBTReaderKineTree:: | |
24 | AliHBTReaderKineTree():fFileName("galice.root") | |
25 | { | |
26 | fParticles = new AliHBTRun(); | |
27 | fIsRead = kFALSE; | |
28 | } | |
29 | ||
30 | AliHBTReaderKineTree:: | |
31 | AliHBTReaderKineTree(TString& fname):fFileName(fname) | |
32 | { | |
33 | fParticles = new AliHBTRun(); | |
34 | fIsRead = kFALSE; | |
35 | } | |
36 | ||
37 | ||
38 | /**********************************************************/ | |
39 | AliHBTReaderKineTree:: | |
40 | AliHBTReaderKineTree(TObjArray* dirs,const Char_t *filename):AliHBTReader(dirs),fFileName(filename) | |
41 | { | |
42 | fParticles = new AliHBTRun(); | |
43 | fIsRead = kFALSE; | |
44 | } | |
45 | /**********************************************************/ | |
46 | ||
47 | AliHBTEvent* AliHBTReaderKineTree::GetParticleEvent(Int_t n) | |
48 | { | |
49 | //returns Nth event with simulated particles | |
50 | if (!fIsRead) | |
51 | if(Read(fParticles,0x0)) | |
52 | { | |
53 | Error("GetParticleEvent","Error in reading"); | |
54 | return 0x0; | |
55 | } | |
56 | ||
57 | return fParticles->GetEvent(n); | |
58 | } | |
59 | ||
60 | /********************************************************************/ | |
61 | ||
62 | Int_t AliHBTReaderKineTree::GetNumberOfPartEvents() | |
63 | { | |
64 | //returns number of events of particles | |
65 | if (!fIsRead) | |
66 | if(Read(fParticles,0x0)) | |
67 | { | |
68 | Error("GetNumberOfPartEvents","Error in reading"); | |
69 | return 0; | |
70 | } | |
71 | return fParticles->GetNumberOfEvents(); | |
72 | } | |
73 | ||
74 | ||
75 | /**********************************************************/ | |
76 | Int_t AliHBTReaderKineTree:: | |
77 | Read(AliHBTRun* particles, AliHBTRun *tracks) | |
78 | { | |
79 | if (!particles) //check if an object is instatiated | |
80 | { | |
81 | Error("Read"," particles object must instatiated before passing it to the reader"); | |
82 | return 1; | |
83 | } | |
84 | particles->Reset();//clear runs == delete all old events | |
85 | ||
86 | Int_t Ndirs;//total number of directories specified in fDirs array | |
87 | Int_t Nevents; //number of events read in current directory | |
88 | Int_t totalNevents = 0; //total number of read events | |
89 | Int_t currentdir = 0; //number of current directory name is fDirs array | |
90 | ||
91 | if (fDirs) //if array with directories is supplied by user | |
92 | { | |
93 | Ndirs = fDirs->GetEntries(); //get the number if directories | |
94 | } | |
95 | else | |
96 | { | |
97 | Ndirs = 0; //if the array is not supplied read only from current directory | |
98 | } | |
99 | ||
100 | do //do{}while; is OK even if 0 dirs specified. In that case we try to read from "./" | |
101 | { | |
102 | cout<<"________________________________________________________\n"; | |
103 | TFile* fileK = OpenFile(currentdir); | |
104 | TTree* treeE = (TTree*)fileK->Get("TE"); | |
105 | if(treeE) | |
106 | { | |
107 | Nevents = (Int_t)treeE->GetEntries(); | |
108 | cout<<"Found "<<Nevents<<" in directory "<<GetDirName(currentdir)<<endl; | |
109 | fileK->Delete("TE"); | |
110 | } | |
111 | else | |
112 | { | |
113 | Error("Read","Cannot find Header Tree (TE)"); | |
114 | Nevents = 0; | |
115 | } | |
116 | ||
117 | for(Int_t currentEvent =0; currentEvent<Nevents;currentEvent++)//loop over all events | |
118 | { | |
119 | // cout<<"processing event "<<currentEvent<<" in current dir."<<endl; | |
120 | AliStack* stack = GetStack(currentEvent,fileK); | |
121 | if (!stack) | |
122 | { | |
123 | Error("Read","Can not get stack for event %d",currentEvent); | |
124 | continue; | |
125 | } | |
126 | Int_t npart = stack->GetNtrack(); | |
127 | Int_t nnn = 0; | |
128 | for (Int_t i = 0;i<npart; i++) | |
129 | { | |
130 | ||
131 | TParticle * p = stack->Particle(i); | |
132 | if (p->GetFirstMother() >= 0) continue; | |
133 | ||
134 | if(Pass(p->GetPdgCode())) continue; //check if we are intersted with particles of this type | |
135 | //if not take next partilce | |
136 | ||
137 | AliHBTParticle* part = new AliHBTParticle(*p); | |
138 | if(Pass(part)) { delete part; continue;}//check if meets all criteria of any of our cuts | |
139 | //if it does not delete it and take next good track | |
140 | particles->AddParticle(totalNevents,part);//put track and particle on the run | |
141 | ||
142 | if ( (nnn%100) == 0) | |
143 | { | |
144 | cout<<nnn<<"\r"; | |
145 | fflush(0); | |
146 | } | |
147 | nnn++; | |
148 | } | |
149 | cout<<"Total read "<<nnn<<endl; | |
150 | delete stack; | |
151 | totalNevents++; | |
152 | } | |
153 | delete gAlice; | |
154 | gAlice = 0; | |
155 | if (fileK) | |
156 | { | |
157 | fileK->Close(); | |
158 | delete fileK; | |
159 | fileK = 0; | |
160 | } | |
161 | ||
162 | currentdir++; | |
163 | }while(currentdir < Ndirs);//end of loop over directories specified in fDirs Obj Array | |
164 | fIsRead = kTRUE; | |
165 | return 0; | |
166 | } | |
167 | ||
168 | /**********************************************************/ | |
169 | AliStack* AliHBTReaderKineTree::GetStack(Int_t n, TFile* file) | |
170 | { | |
171 | AliHeader *header = new AliHeader(); | |
172 | TTree* treeE = (TTree*)file->Get("TE"); | |
173 | if(treeE) | |
174 | { | |
175 | treeE->SetBranchAddress("Header", &header); | |
176 | if (!treeE->GetEntry(n)) | |
177 | { | |
178 | Error("GetEvent","Cannot find event:%dn",n); | |
179 | delete header; | |
180 | treeE->Delete("TE"); | |
181 | return 0x0; | |
182 | } | |
183 | } | |
184 | else | |
185 | { | |
186 | Error("GetStack","Cannot find Header Tree (TE)n"); | |
187 | delete header; | |
188 | return 0x0; | |
189 | } | |
190 | ||
191 | AliStack* stack = header->Stack(); | |
192 | if (stack) | |
193 | { | |
194 | if (!stack->GetEvent(n)) | |
195 | { | |
196 | delete header; | |
197 | treeE->Delete("TE"); | |
198 | return 0x0; | |
199 | } | |
200 | } | |
201 | delete header; | |
202 | treeE->Delete("TE"); | |
203 | return stack; | |
204 | } | |
205 | ||
206 | TFile* AliHBTReaderKineTree::OpenFile(Int_t n) | |
207 | { | |
208 | //opens file with kine tree | |
209 | ||
210 | const TString& dirname = GetDirName(n); | |
211 | if (dirname == "") | |
212 | { | |
213 | Error("OpenFiles","Can not get directory name"); | |
214 | return 0x0; | |
215 | } | |
216 | TString filename = dirname +"/"+ fFileName; | |
217 | TFile *ret = TFile::Open(filename.Data()); | |
218 | ||
219 | if ( ret == 0x0) | |
220 | { | |
221 | Error("OpenFiles","Can't open file %s",filename.Data()); | |
222 | return 0x0; | |
223 | } | |
224 | if (!ret->IsOpen()) | |
225 | { | |
226 | Error("OpenFiles","Can't open file %s",filename.Data()); | |
227 | return 0x0; | |
228 | } | |
229 | ||
230 | return ret; | |
231 | } |