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1b446896 | 1 | #include "AliHBTReader.h" |
2 | ||
0fdcc83d | 3 | #include <TString.h> |
4 | #include <TObjString.h> | |
5 | #include <TObjArray.h> | |
6 | #include <TClass.h> | |
fe1a3526 | 7 | #include <TRandom.h> |
0fdcc83d | 8 | |
1b446896 | 9 | #include "AliHBTParticleCut.h" |
bed069a4 | 10 | #include "AliHBTEvent.h" |
11 | #include "AliHBTRun.h" | |
88cb7938 | 12 | |
1b446896 | 13 | ClassImp(AliHBTReader) |
14 | //pure virtual | |
bed069a4 | 15 | |
1b446896 | 16 | /*************************************************************************************/ |
17 | ||
bed069a4 | 18 | AliHBTReader::AliHBTReader(): |
19 | fCuts(new TObjArray()), | |
20 | fDirs(0x0), | |
21 | fCurrentEvent(0), | |
22 | fCurrentDir(0), | |
23 | fNEventsRead(0), | |
24 | fTracksEvent(0x0), | |
25 | fParticlesEvent(0x0), | |
26 | fParticles(0x0), | |
27 | fTracks(0x0), | |
28 | fIsRead(kFALSE), | |
4f36d7b8 | 29 | fBufferEvents(kFALSE), |
30 | fBlend(kFALSE), | |
31 | fFirst(0), | |
32 | fLast(0) | |
1b446896 | 33 | { |
34 | //constructor | |
1b446896 | 35 | } |
bed069a4 | 36 | /*************************************************************************************/ |
1b446896 | 37 | |
bed069a4 | 38 | AliHBTReader::AliHBTReader(TObjArray* dirs): |
39 | fCuts(new TObjArray()), | |
40 | fDirs(dirs), | |
41 | fCurrentEvent(0), | |
42 | fCurrentDir(0), | |
43 | fNEventsRead(0), | |
44 | fTracksEvent(0x0), | |
45 | fParticlesEvent(0x0), | |
46 | fParticles(0x0), | |
47 | fTracks(0x0), | |
48 | fIsRead(kFALSE), | |
4f36d7b8 | 49 | fBufferEvents(kFALSE), |
50 | fBlend(kFALSE), | |
51 | fFirst(0), | |
52 | fLast(0) | |
bed069a4 | 53 | { |
54 | //ctor with array of directories to read as parameter | |
55 | } | |
1b446896 | 56 | /*************************************************************************************/ |
57 | ||
58 | AliHBTReader::~AliHBTReader() | |
59 | { | |
60 | //destructor | |
36ee4bd5 | 61 | if(fCuts) |
62 | { | |
63 | fCuts->SetOwner(); | |
64 | delete fCuts; | |
65 | } | |
bed069a4 | 66 | delete fParticlesEvent; |
67 | delete fTracksEvent; | |
1b446896 | 68 | } |
bed069a4 | 69 | /*************************************************************************************/ |
1b446896 | 70 | |
bed069a4 | 71 | Int_t AliHBTReader::Next() |
72 | { | |
73 | //moves to next event | |
4f36d7b8 | 74 | if ((fNEventsRead > fLast) && (fLast > 0) ) |
75 | ||
76 | do | |
77 | { | |
78 | if ( ReadNext() == kTRUE) | |
79 | return kTRUE; | |
80 | }while (fNEventsRead < fFirst); | |
bed069a4 | 81 | |
fe1a3526 | 82 | if (fBlend) Blend(); |
83 | ||
bed069a4 | 84 | if (fBufferEvents) |
85 | { | |
86 | if ( ReadsTracks() && fTracksEvent) | |
4f36d7b8 | 87 | fTracks->SetEvent(fNEventsRead-1-fFirst,fTracksEvent); |
bed069a4 | 88 | if ( ReadsParticles() && fParticlesEvent) |
4f36d7b8 | 89 | fParticles->SetEvent(fNEventsRead-1-fFirst,fParticlesEvent); |
bed069a4 | 90 | } |
91 | return kFALSE; | |
92 | } | |
1b446896 | 93 | /*************************************************************************************/ |
94 | ||
95 | void AliHBTReader::AddParticleCut(AliHBTParticleCut* cut) | |
96 | { | |
97 | //sets the new cut | |
98 | ||
99 | if (!cut) //if cut is NULL return with error | |
100 | { | |
101 | Error("AddParticleType","NULL pointers are not accepted any more.\nIf You want to accept all particles of this type, set an empty cut "); | |
102 | return; | |
103 | } | |
104 | AliHBTParticleCut *c = (AliHBTParticleCut*)cut->Clone(); | |
105 | fCuts->Add(c); | |
106 | } | |
bed069a4 | 107 | /********************************************************************/ |
108 | ||
109 | AliHBTEvent* AliHBTReader::GetParticleEvent(Int_t n) | |
110 | { | |
111 | //returns Nth event with simulated particles | |
112 | if (ReadsParticles() == kFALSE) | |
113 | { | |
114 | Error("GetParticleEvent","This reader is not able to provide simulated particles."); | |
115 | return 0; | |
116 | } | |
117 | ||
118 | if (!fIsRead) | |
119 | { | |
120 | if (ReadsParticles() && (fParticles == 0x0)) fParticles = new AliHBTRun(); | |
121 | if (ReadsTracks() && (fTracks == 0x0)) fTracks = new AliHBTRun(); | |
122 | ||
123 | if (Read(fParticles,fTracks)) | |
124 | { | |
125 | Error("GetParticleEvent","Error in reading"); | |
126 | return 0x0; | |
127 | } | |
128 | else fIsRead = kTRUE; | |
129 | } | |
130 | return fParticles->GetEvent(n); | |
131 | } | |
132 | /********************************************************************/ | |
133 | ||
134 | AliHBTEvent* AliHBTReader::GetTrackEvent(Int_t n) | |
135 | { | |
136 | //returns Nth event with reconstructed tracks | |
137 | if (ReadsTracks() == kFALSE) | |
138 | { | |
139 | Error("GetTrackEvent","This reader is not able to provide recosntructed tracks."); | |
140 | return 0; | |
141 | } | |
142 | if (!fIsRead) | |
143 | { | |
144 | if (ReadsParticles() && (fParticles == 0x0)) fParticles = new AliHBTRun(); | |
145 | if (ReadsTracks() && (fTracks == 0x0)) fTracks = new AliHBTRun(); | |
146 | ||
147 | if(Read(fParticles,fTracks)) | |
148 | { | |
149 | Error("GetTrackEvent","Error in reading"); | |
150 | return 0x0; | |
151 | } | |
152 | else fIsRead = kTRUE; | |
153 | } | |
154 | return fTracks->GetEvent(n); | |
155 | } | |
156 | /********************************************************************/ | |
1b446896 | 157 | |
bed069a4 | 158 | Int_t AliHBTReader::GetNumberOfPartEvents() |
159 | { | |
160 | //returns number of events of particles | |
161 | if (ReadsParticles() == kFALSE) | |
162 | { | |
163 | Error("GetNumberOfPartEvents","This reader is not able to provide simulated particles."); | |
164 | return 0; | |
165 | } | |
166 | ||
167 | if (!fIsRead) | |
168 | { | |
169 | if (ReadsParticles() && (fParticles == 0x0)) fParticles = new AliHBTRun(); | |
170 | if (ReadsTracks() && (fTracks == 0x0)) fTracks = new AliHBTRun(); | |
171 | ||
172 | if (Read(fParticles,fTracks)) | |
173 | { | |
174 | Error("GetNumberOfPartEvents","Error in reading"); | |
175 | return 0; | |
176 | } | |
177 | else fIsRead = kTRUE; | |
178 | } | |
179 | return fParticles->GetNumberOfEvents(); | |
180 | } | |
181 | /********************************************************************/ | |
182 | ||
183 | Int_t AliHBTReader::GetNumberOfTrackEvents() | |
184 | { | |
185 | //returns number of events of tracks | |
186 | if (ReadsTracks() == kFALSE) | |
187 | { | |
188 | Error("GetNumberOfTrackEvents","This reader is not able to provide recosntructed tracks."); | |
189 | return 0; | |
190 | } | |
191 | if (!fIsRead) | |
192 | { | |
193 | if (ReadsParticles() && (fParticles == 0x0)) fParticles = new AliHBTRun(); | |
194 | if (ReadsTracks() && (fTracks == 0x0)) fTracks = new AliHBTRun(); | |
195 | ||
196 | if(Read(fParticles,fTracks)) | |
197 | { | |
198 | Error("GetNumberOfTrackEvents","Error in reading"); | |
199 | return 0; | |
200 | } | |
201 | else fIsRead = kTRUE; | |
202 | } | |
203 | return fTracks->GetNumberOfEvents(); | |
204 | } | |
205 | /********************************************************************/ | |
206 | ||
207 | Int_t AliHBTReader::Read(AliHBTRun* particles, AliHBTRun *tracks) | |
208 | { | |
209 | //reads data and puts put to the particles and tracks objects | |
210 | //reurns 0 if everything is OK | |
211 | // | |
212 | Info("Read",""); | |
213 | ||
4d91c73a | 214 | if ( ReadsParticles() && (particles == 0x0) ) //check if an object is instatiated |
bed069a4 | 215 | { |
216 | Error("Read"," particles object must be instatiated before passing it to the reader"); | |
217 | return 1; | |
218 | } | |
4d91c73a | 219 | if ( ReadsTracks() && (tracks == 0x0) ) //check if an object is instatiated |
bed069a4 | 220 | { |
221 | Error("Read"," tracks object must be instatiated before passing it to the reader"); | |
222 | return 1; | |
223 | } | |
4d91c73a | 224 | |
225 | if (ReadsParticles()) particles->Reset();//clear runs == delete all old events | |
226 | if (ReadsTracks()) tracks->Reset(); | |
bed069a4 | 227 | |
228 | Rewind(); | |
229 | ||
230 | Int_t i = 0; | |
231 | while(Next() == kFALSE) | |
232 | { | |
233 | if (ReadsTracks()) tracks->SetEvent(i,fTracksEvent); | |
234 | if (ReadsParticles()) particles->SetEvent(i,fParticlesEvent); | |
235 | i++; | |
236 | } | |
237 | return 0; | |
238 | } | |
1b446896 | 239 | /*************************************************************************************/ |
240 | ||
241 | Bool_t AliHBTReader::Pass(AliHBTParticle* p) | |
88cb7938 | 242 | { |
1b446896 | 243 | //Method examines whether particle meets all cut and particle type criteria |
244 | ||
245 | if(p==0x0)//of corse we not pass NULL pointers | |
246 | { | |
247 | Warning("Pass()","No Pasaran! We never accept NULL pointers"); | |
248 | return kTRUE; | |
249 | } | |
250 | //if no particle is specified, we pass all particles | |
251 | //excluding NULL pointers, of course | |
e526d37c | 252 | if ( fCuts->GetEntriesFast() == 0 ) return kFALSE; //if no cut specified accept all particles |
1b446896 | 253 | for(Int_t i=0; i<fCuts->GetEntriesFast(); i++) |
254 | { | |
255 | AliHBTParticleCut &cut = *((AliHBTParticleCut*)fCuts->At(i)); | |
256 | if(!cut.Pass(p)) return kFALSE; //accepted | |
257 | } | |
258 | ||
259 | return kTRUE;//not accepted | |
88cb7938 | 260 | } |
1b446896 | 261 | /*************************************************************************************/ |
262 | ||
263 | Bool_t AliHBTReader::Pass(Int_t pid) | |
264 | { | |
265 | //this method checks if any of existing cuts accepts this pid particles | |
266 | //or any cuts accepts all particles | |
267 | ||
268 | if(pid == 0) | |
269 | return kTRUE; | |
e526d37c | 270 | |
271 | if ( fCuts->GetEntriesFast() == 0 ) return kFALSE; //if no cut specified accept all particles | |
1b446896 | 272 | |
273 | for(Int_t i=0; i<fCuts->GetEntriesFast(); i++) | |
274 | { | |
275 | AliHBTParticleCut &cut = *((AliHBTParticleCut*)fCuts->At(i)); | |
276 | //if some of cuts accepts all particles or some accepts particles of this type, accept | |
277 | if ( (cut.GetPID() == 0) || (cut.GetPID() == pid) ) return kFALSE; | |
278 | } | |
279 | return kTRUE; | |
280 | } | |
281 | /*************************************************************************************/ | |
0fdcc83d | 282 | |
283 | TString& AliHBTReader::GetDirName(Int_t entry) | |
bed069a4 | 284 | { |
285 | //returns directory name of next one to read | |
286 | TString* retval;//return value | |
287 | if (fDirs == 0x0) | |
288 | { | |
289 | retval = new TString("."); | |
290 | return *retval; | |
291 | } | |
292 | ||
293 | if ( (entry>fDirs->GetEntries()) || (entry<0))//if out of bounds return empty string | |
294 | { //note that entry==0 is accepted even if array is empty (size=0) | |
295 | Error("GetDirName","Name out of bounds"); | |
296 | retval = new TString(); | |
297 | return *retval; | |
298 | } | |
299 | ||
300 | if (fDirs->GetEntries() == 0) | |
301 | { | |
302 | retval = new TString("."); | |
303 | return *retval; | |
304 | } | |
305 | ||
306 | TClass *objclass = fDirs->At(entry)->IsA(); | |
307 | TClass *stringclass = TObjString::Class(); | |
308 | ||
309 | TObjString *dir = (TObjString*)objclass->DynamicCast(stringclass,fDirs->At(entry)); | |
310 | ||
311 | if(dir == 0x0) | |
312 | { | |
313 | Error("GetDirName","Object in TObjArray is not a TObjString or its descendant"); | |
314 | retval = new TString(); | |
315 | return *retval; | |
316 | } | |
317 | if (gDebug > 0) Info("GetDirName","Returned ok %s",dir->String().Data()); | |
318 | return dir->String(); | |
319 | } | |
fe1a3526 | 320 | /*************************************************************************************/ |
0fdcc83d | 321 | |
fe1a3526 | 322 | void AliHBTReader::Blend() |
323 | { | |
324 | //randomly change positions of the particles after reading | |
325 | //is used to check if some distr depends on order of particles | |
326 | //(tracking gives particles Pt sorted) | |
327 | for (Int_t i = 2; i < fParticlesEvent->GetNumberOfParticles(); i++) | |
328 | { | |
329 | Int_t with = gRandom->Integer(i); | |
330 | fParticlesEvent->SwapParticles(i,with); | |
331 | if (fTracksEvent) fTracksEvent->SwapParticles(i,with); | |
332 | } | |
333 | } |