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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 | /* $Id$ */ | |
17 | ||
18 | /////////////////////////////////////////////////////////////////////////////// | |
19 | // // | |
20 | // TRD cluster finder base class // | |
21 | // // | |
22 | /////////////////////////////////////////////////////////////////////////////// | |
23 | ||
24 | #include <TROOT.h> | |
25 | #include <TTree.h> | |
26 | #include <TFile.h> | |
27 | #include <TObjArray.h> | |
28 | ||
29 | #include "AliRun.h" | |
30 | #include "AliRunLoader.h" | |
31 | #include "AliLoader.h" | |
32 | #include "AliLog.h" | |
33 | ||
34 | #include "AliTRDclusterizer.h" | |
35 | #include "AliTRDcluster.h" | |
36 | #include "AliTRDrecPoint.h" | |
37 | #include "AliTRDgeometry.h" | |
38 | #include "AliTRDcalibDB.h" | |
39 | ||
40 | ClassImp(AliTRDclusterizer) | |
41 | ||
42 | //_____________________________________________________________________________ | |
43 | AliTRDclusterizer::AliTRDclusterizer() | |
44 | :TNamed() | |
45 | ,fRunLoader(NULL) | |
46 | ,fClusterTree(NULL) | |
47 | ,fRecPoints(NULL) | |
48 | { | |
49 | // | |
50 | // AliTRDclusterizer default constructor | |
51 | // | |
52 | ||
53 | } | |
54 | ||
55 | //_____________________________________________________________________________ | |
56 | AliTRDclusterizer::AliTRDclusterizer(const Text_t* name, const Text_t* title) | |
57 | :TNamed(name,title) | |
58 | ,fRunLoader(NULL) | |
59 | ,fClusterTree(NULL) | |
60 | ,fRecPoints(NULL) | |
61 | { | |
62 | // | |
63 | // AliTRDclusterizer constructor | |
64 | // | |
65 | ||
66 | } | |
67 | ||
68 | //_____________________________________________________________________________ | |
69 | AliTRDclusterizer::AliTRDclusterizer(const AliTRDclusterizer &c) | |
70 | :TNamed(c) | |
71 | ,fRunLoader(NULL) | |
72 | ,fClusterTree(NULL) | |
73 | ,fRecPoints(NULL) | |
74 | { | |
75 | // | |
76 | // AliTRDclusterizer copy constructor | |
77 | // | |
78 | ||
79 | } | |
80 | ||
81 | //_____________________________________________________________________________ | |
82 | AliTRDclusterizer::~AliTRDclusterizer() | |
83 | { | |
84 | // | |
85 | // AliTRDclusterizer destructor | |
86 | // | |
87 | ||
88 | if (fRecPoints) { | |
89 | fRecPoints->Delete(); | |
90 | delete fRecPoints; | |
91 | } | |
92 | ||
93 | } | |
94 | ||
95 | //_____________________________________________________________________________ | |
96 | AliTRDclusterizer &AliTRDclusterizer::operator=(const AliTRDclusterizer &c) | |
97 | { | |
98 | // | |
99 | // Assignment operator | |
100 | // | |
101 | ||
102 | if (this != &c) ((AliTRDclusterizer &) c).Copy(*this); | |
103 | return *this; | |
104 | ||
105 | } | |
106 | ||
107 | //_____________________________________________________________________________ | |
108 | void AliTRDclusterizer::Copy(TObject &c) const | |
109 | { | |
110 | // | |
111 | // Copy function | |
112 | // | |
113 | ||
114 | ((AliTRDclusterizer &) c).fClusterTree = NULL; | |
115 | ((AliTRDclusterizer &) c).fRecPoints = NULL; | |
116 | ||
117 | } | |
118 | ||
119 | //_____________________________________________________________________________ | |
120 | Bool_t AliTRDclusterizer::Open(const Char_t *name, Int_t nEvent) | |
121 | { | |
122 | // | |
123 | // Opens the AliROOT file. Output and input are in the same file | |
124 | // | |
125 | ||
126 | TString evfoldname = AliConfig::GetDefaultEventFolderName(); | |
127 | fRunLoader = AliRunLoader::GetRunLoader(evfoldname); | |
128 | ||
129 | if (!fRunLoader) { | |
130 | fRunLoader = AliRunLoader::Open(name); | |
131 | } | |
132 | ||
133 | if (!fRunLoader) { | |
134 | AliError(Form("Can not open session for file %s.",name)); | |
135 | return kFALSE; | |
136 | } | |
137 | ||
138 | OpenInput(nEvent); | |
139 | OpenOutput(); | |
140 | ||
141 | return kTRUE; | |
142 | ||
143 | } | |
144 | ||
145 | //_____________________________________________________________________________ | |
146 | Bool_t AliTRDclusterizer::OpenOutput() | |
147 | { | |
148 | // | |
149 | // Open the output file | |
150 | // | |
151 | ||
152 | TObjArray *ioArray = 0; | |
153 | ||
154 | AliLoader* loader = fRunLoader->GetLoader("TRDLoader"); | |
155 | loader->MakeTree("R"); | |
156 | ||
157 | fClusterTree = loader->TreeR(); | |
158 | fClusterTree->Branch("TRDcluster","TObjArray",&ioArray,32000,0); | |
159 | ||
160 | return kTRUE; | |
161 | ||
162 | } | |
163 | ||
164 | //_____________________________________________________________________________ | |
165 | Bool_t AliTRDclusterizer::OpenInput(Int_t nEvent) | |
166 | { | |
167 | // | |
168 | // Opens a ROOT-file with TRD-hits and reads in the digits-tree | |
169 | // | |
170 | ||
171 | // Connect the AliRoot file containing Geometry, Kine, and Hits | |
172 | if (fRunLoader->GetAliRun() == 0x0) { | |
173 | fRunLoader->LoadgAlice(); | |
174 | } | |
175 | gAlice = fRunLoader->GetAliRun(); | |
176 | ||
177 | if (!(gAlice)) { | |
178 | fRunLoader->LoadgAlice(); | |
179 | gAlice = fRunLoader->GetAliRun(); | |
180 | if (!(gAlice)) { | |
181 | AliError("Could not find AliRun object.\n"); | |
182 | return kFALSE; | |
183 | } | |
184 | } | |
185 | ||
186 | // Import the Trees for the event nEvent in the file | |
187 | fRunLoader->GetEvent(nEvent); | |
188 | ||
189 | return kTRUE; | |
190 | ||
191 | } | |
192 | ||
193 | //_____________________________________________________________________________ | |
194 | Bool_t AliTRDclusterizer::WriteClusters(Int_t det) | |
195 | { | |
196 | // | |
197 | // Fills TRDcluster branch in the tree with the clusters | |
198 | // found in detector = det. For det=-1 writes the tree. | |
199 | // | |
200 | ||
201 | if ((det < -1) || | |
202 | (det >= AliTRDgeometry::Ndet())) { | |
203 | AliError(Form("Unexpected detector index %d.\n",det)); | |
204 | return kFALSE; | |
205 | } | |
206 | ||
207 | TBranch *branch = fClusterTree->GetBranch("TRDcluster"); | |
208 | if (!branch) { | |
209 | TObjArray *ioArray = 0; | |
210 | branch = fClusterTree->Branch("TRDcluster","TObjArray",&ioArray,32000,0); | |
211 | } | |
212 | ||
213 | if ((det >= 0) && | |
214 | (det < AliTRDgeometry::Ndet())) { | |
215 | ||
216 | Int_t nRecPoints = RecPoints()->GetEntriesFast(); | |
217 | TObjArray *detRecPoints = new TObjArray(400); | |
218 | ||
219 | for (Int_t i = 0; i < nRecPoints; i++) { | |
220 | AliTRDcluster *c = (AliTRDcluster *) RecPoints()->UncheckedAt(i); | |
221 | if (det == c->GetDetector()) { | |
222 | detRecPoints->AddLast(c); | |
223 | } | |
224 | else { | |
225 | AliError("Attempt to write a cluster with unexpected detector index\n"); | |
226 | } | |
227 | } | |
228 | ||
229 | branch->SetAddress(&detRecPoints); | |
230 | fClusterTree->Fill(); | |
231 | ||
232 | delete detRecPoints; | |
233 | ||
234 | return kTRUE; | |
235 | ||
236 | } | |
237 | ||
238 | if (det == -1) { | |
239 | ||
240 | AliInfo(Form("Writing the cluster tree %s for event %d." | |
241 | ,fClusterTree->GetName(),fRunLoader->GetEventNumber())); | |
242 | ||
243 | if (fRecPoints) { | |
244 | ||
245 | branch->SetAddress(&fRecPoints); | |
246 | ||
247 | AliLoader *loader = fRunLoader->GetLoader("TRDLoader"); | |
248 | loader->WriteRecPoints("OVERWRITE"); | |
249 | ||
250 | } | |
251 | else { | |
252 | ||
253 | AliError("Cluster tree does not exist. Cannot write clusters.\n"); | |
254 | return kFALSE; | |
255 | ||
256 | } | |
257 | ||
258 | return kTRUE; | |
259 | ||
260 | } | |
261 | ||
262 | AliError(Form("Unexpected detector index %d.\n",det)); | |
263 | ||
264 | return kFALSE; | |
265 | ||
266 | } | |
267 | ||
268 | ||
269 | //_____________________________________________________________________________ | |
270 | AliTRDcluster* AliTRDclusterizer::AddCluster(Double_t *pos, Int_t timebin | |
271 | , Int_t det, Double_t amp | |
272 | , Int_t *tracks, Double_t *sig | |
273 | , Int_t iType, Float_t center) | |
274 | { | |
275 | // | |
276 | // Add a cluster for the TRD | |
277 | // | |
278 | ||
279 | AliTRDcluster *c = new AliTRDcluster(); | |
280 | ||
281 | c->SetDetector(det); | |
282 | c->SetQ(amp); | |
283 | c->SetX(pos[2]); | |
284 | c->SetY(pos[0]); | |
285 | c->SetZ(pos[1]); | |
286 | c->SetSigmaY2(sig[0]); | |
287 | c->SetSigmaZ2(sig[1]); | |
288 | c->SetLocalTimeBin(timebin); | |
289 | c->SetCenter(center); | |
290 | ||
291 | if (tracks) { | |
292 | c->AddTrackIndex(tracks); | |
293 | } | |
294 | ||
295 | switch (iType) { | |
296 | case 0: | |
297 | c->Set2pad(); | |
298 | break; | |
299 | case 1: | |
300 | c->Set3pad(); | |
301 | break; | |
302 | case 2: | |
303 | c->Set4pad(); | |
304 | break; | |
305 | case 3: | |
306 | c->Set5pad(); | |
307 | break; | |
308 | case 4: | |
309 | c->SetLarge(); | |
310 | break; | |
311 | }; | |
312 | ||
313 | RecPoints()->Add(c); | |
314 | return c; | |
315 | ||
316 | } | |
317 | ||
318 | //_____________________________________________________________________________ | |
319 | Double_t AliTRDclusterizer::CalcXposFromTimebin(Float_t timebin, Int_t idet | |
320 | , Int_t col, Int_t row) | |
321 | { | |
322 | // | |
323 | // Calculates the local x position in the detector from the timebin, | |
324 | // depends on the drift velocity and t0 | |
325 | // | |
326 | ||
327 | AliTRDcalibDB *calibration = AliTRDcalibDB::Instance(); | |
328 | if (!calibration) { | |
329 | AliError("Cannot find calibration object"); | |
330 | return -1; | |
331 | } | |
332 | ||
333 | Float_t vdrift = calibration->GetVdrift(idet,col,row); | |
334 | Float_t t0 = calibration->GetT0(idet,col,row); | |
335 | Float_t samplingFrequency = calibration->GetSamplingFrequency(); | |
336 | ||
337 | timebin -= t0; | |
338 | ||
339 | return timebin / samplingFrequency * vdrift; | |
340 | ||
341 | } | |
342 | ||
343 | //_____________________________________________________________________________ | |
344 | void AliTRDclusterizer::ResetRecPoints() | |
345 | { | |
346 | // | |
347 | // Resets the list of rec points | |
348 | // | |
349 | ||
350 | if (fRecPoints) { | |
351 | fRecPoints->Delete(); | |
352 | } | |
353 | ||
354 | } | |
355 | ||
356 | //_____________________________________________________________________________ | |
357 | TObjArray* AliTRDclusterizer::RecPoints() | |
358 | { | |
359 | // | |
360 | // Returns the list of rec points | |
361 | // | |
362 | ||
363 | if (!fRecPoints) { | |
364 | fRecPoints = new TObjArray(400); | |
365 | } | |
366 | ||
367 | return fRecPoints; | |
368 | ||
369 | } |