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98937d93 | 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 | //----------------------------------------------------------------- | |
17 | // Implementation of the alignment steering class | |
18 | // It provides an access to the track space points | |
19 | // written along the esd tracks. The class enables | |
20 | // the user to plug any track fitter (deriving from | |
21 | // AliTrackFitter class) and minimization fo the | |
22 | // track residual sums (deriving from the AliTrackResiduals). | |
23 | //----------------------------------------------------------------- | |
24 | ||
25 | #include <TChain.h> | |
bfbd5665 | 26 | #include <TFile.h> |
98937d93 | 27 | |
28 | #include "AliAlignmentTracks.h" | |
29 | #include "AliTrackPointArray.h" | |
30 | #include "AliAlignObjAngles.h" | |
31 | #include "AliTrackFitterRieman.h" | |
32 | #include "AliTrackResidualsChi2.h" | |
33 | #include "AliESD.h" | |
34 | #include "AliLog.h" | |
35 | ||
36 | ClassImp(AliAlignmentTracks) | |
37 | ||
38 | //______________________________________________________________________________ | |
39 | AliAlignmentTracks::AliAlignmentTracks(): | |
40 | fESDChain(0), | |
41 | fPointsFilename("AliTrackPoints.root"), | |
42 | fPointsFile(0), | |
43 | fPointsTree(0), | |
44 | fLastIndex(0), | |
45 | fArrayIndex(0), | |
46 | fIsIndexBuilt(kFALSE), | |
75e3794b | 47 | fAlignObjs(0), |
46ae650f | 48 | fMisalignObjs(0), |
98937d93 | 49 | fTrackFitter(0), |
91264393 | 50 | fMinimizer(0), |
51 | fDoUpdate(kTRUE) | |
98937d93 | 52 | { |
53 | // Default constructor | |
54 | InitIndex(); | |
55 | InitAlignObjs(); | |
56 | } | |
57 | ||
58 | //______________________________________________________________________________ | |
59 | AliAlignmentTracks::AliAlignmentTracks(TChain *esdchain): | |
60 | fESDChain(esdchain), | |
61 | fPointsFilename("AliTrackPoints.root"), | |
62 | fPointsFile(0), | |
63 | fPointsTree(0), | |
64 | fLastIndex(0), | |
65 | fArrayIndex(0), | |
66 | fIsIndexBuilt(kFALSE), | |
75e3794b | 67 | fAlignObjs(0), |
46ae650f | 68 | fMisalignObjs(0), |
98937d93 | 69 | fTrackFitter(0), |
91264393 | 70 | fMinimizer(0), |
71 | fDoUpdate(kTRUE) | |
98937d93 | 72 | { |
73 | // Constructor in the case | |
74 | // the user provides an already | |
75 | // built TChain with ESD trees | |
76 | InitIndex(); | |
77 | InitAlignObjs(); | |
78 | } | |
79 | ||
80 | ||
81 | //______________________________________________________________________________ | |
82 | AliAlignmentTracks::AliAlignmentTracks(const char *esdfilename, const char *esdtreename): | |
75e3794b | 83 | fESDChain(new TChain(esdtreename)), |
98937d93 | 84 | fPointsFilename("AliTrackPoints.root"), |
85 | fPointsFile(0), | |
86 | fPointsTree(0), | |
87 | fLastIndex(0), | |
88 | fArrayIndex(0), | |
89 | fIsIndexBuilt(kFALSE), | |
75e3794b | 90 | fAlignObjs(0), |
46ae650f | 91 | fMisalignObjs(0), |
98937d93 | 92 | fTrackFitter(0), |
91264393 | 93 | fMinimizer(0), |
94 | fDoUpdate(kTRUE) | |
98937d93 | 95 | { |
96 | // Constructor in the case | |
97 | // the user provides a single ESD file | |
98 | // or a directory containing ESD files | |
98937d93 | 99 | fESDChain->Add(esdfilename); |
100 | ||
101 | InitIndex(); | |
102 | InitAlignObjs(); | |
103 | } | |
104 | ||
98937d93 | 105 | |
106 | //______________________________________________________________________________ | |
107 | AliAlignmentTracks::~AliAlignmentTracks() | |
108 | { | |
109 | // Destructor | |
110 | if (fESDChain) delete fESDChain; | |
111 | ||
112 | DeleteIndex(); | |
113 | DeleteAlignObjs(); | |
114 | ||
115 | delete fTrackFitter; | |
116 | delete fMinimizer; | |
117 | ||
118 | if (fPointsFile) fPointsFile->Close(); | |
119 | } | |
120 | ||
121 | //______________________________________________________________________________ | |
122 | void AliAlignmentTracks::AddESD(TChain *esdchain) | |
123 | { | |
124 | // Add a chain with ESD files | |
125 | if (fESDChain) | |
126 | fESDChain->Add(esdchain); | |
127 | else | |
128 | fESDChain = esdchain; | |
129 | } | |
130 | ||
131 | //______________________________________________________________________________ | |
132 | void AliAlignmentTracks::AddESD(const char *esdfilename, const char *esdtreename) | |
133 | { | |
134 | // Add a single file or | |
135 | // a directory to the chain | |
136 | // with the ESD files | |
137 | if (fESDChain) | |
138 | fESDChain->AddFile(esdfilename,TChain::kBigNumber,esdtreename); | |
139 | else { | |
140 | fESDChain = new TChain(esdtreename); | |
141 | fESDChain->Add(esdfilename); | |
142 | } | |
143 | } | |
144 | ||
145 | //______________________________________________________________________________ | |
146 | void AliAlignmentTracks::ProcessESD() | |
147 | { | |
148 | // Analyzes and filters ESD tracks | |
149 | // Stores the selected track space points | |
150 | // into the output file | |
151 | ||
152 | if (!fESDChain) return; | |
153 | ||
154 | AliESD *esd = 0; | |
155 | fESDChain->SetBranchAddress("ESD",&esd); | |
156 | ||
157 | // Open the output file | |
158 | if (fPointsFilename.Data() == "") { | |
159 | AliWarning("Incorrect output filename!"); | |
160 | return; | |
161 | } | |
162 | ||
163 | TFile *pointsFile = TFile::Open(fPointsFilename,"RECREATE"); | |
164 | if (!pointsFile || !pointsFile->IsOpen()) { | |
165 | AliWarning(Form("Can't open %s !",fPointsFilename.Data())); | |
166 | return; | |
167 | } | |
168 | ||
169 | TTree *pointsTree = new TTree("spTree", "Tree with track space point arrays"); | |
15e85efa | 170 | const AliTrackPointArray *array = 0; |
98937d93 | 171 | pointsTree->Branch("SP","AliTrackPointArray", &array); |
98937d93 | 172 | Int_t ievent = 0; |
173 | while (fESDChain->GetEntry(ievent++)) { | |
174 | if (!esd) break; | |
175 | Int_t ntracks = esd->GetNumberOfTracks(); | |
176 | for (Int_t itrack=0; itrack < ntracks; itrack++) { | |
177 | AliESDtrack * track = esd->GetTrack(itrack); | |
178 | if (!track) continue; | |
179 | ||
8e392455 | 180 | // UInt_t status = AliESDtrack::kITSpid; |
181 | // status|=AliESDtrack::kTPCpid; | |
182 | // status|=AliESDtrack::kTRDpid; | |
183 | // if ((track->GetStatus() & status) != status) continue; | |
98937d93 | 184 | |
185 | if (track->GetP() < 0.5) continue; | |
186 | ||
187 | array = track->GetTrackPointArray(); | |
188 | pointsTree->Fill(); | |
189 | } | |
190 | } | |
191 | ||
192 | if (!pointsTree->Write()) { | |
193 | AliWarning("Can't write the tree with track point arrays!"); | |
194 | return; | |
195 | } | |
196 | ||
197 | pointsFile->Close(); | |
198 | } | |
199 | ||
200 | //______________________________________________________________________________ | |
201 | void AliAlignmentTracks::ProcessESD(TSelector *selector) | |
202 | { | |
203 | AliWarning(Form("ESD processing based on selector is not yet implemented (%p) !",selector)); | |
204 | } | |
205 | ||
206 | //______________________________________________________________________________ | |
207 | void AliAlignmentTracks::BuildIndex() | |
208 | { | |
209 | // Build index of points tree entries | |
210 | // Used for access based on the volume IDs | |
46ae650f | 211 | if (fIsIndexBuilt) return; |
212 | ||
213 | fIsIndexBuilt = kTRUE; | |
98937d93 | 214 | |
33bebad6 | 215 | // Dummy object is created in order |
216 | // to initialize the volume paths | |
217 | AliAlignObjAngles alobj; | |
218 | ||
98937d93 | 219 | TFile *fPointsFile = TFile::Open(fPointsFilename); |
220 | if (!fPointsFile || !fPointsFile->IsOpen()) { | |
221 | AliWarning(Form("Can't open %s !",fPointsFilename.Data())); | |
222 | return; | |
223 | } | |
224 | ||
225 | // AliTrackPointArray* array = new AliTrackPointArray; | |
226 | AliTrackPointArray* array = 0; | |
46ae650f | 227 | fPointsTree = (TTree*) fPointsFile->Get("spTree"); |
228 | if (!fPointsTree) { | |
98937d93 | 229 | AliWarning("No pointsTree found!"); |
230 | return; | |
231 | } | |
46ae650f | 232 | fPointsTree->SetBranchAddress("SP", &array); |
98937d93 | 233 | |
46ae650f | 234 | Int_t nArrays = fPointsTree->GetEntries(); |
98937d93 | 235 | for (Int_t iArray = 0; iArray < nArrays; iArray++) |
236 | { | |
46ae650f | 237 | fPointsTree->GetEvent(iArray); |
98937d93 | 238 | if (!array) continue; |
239 | for (Int_t ipoint = 0; ipoint < array->GetNPoints(); ipoint++) { | |
240 | UShort_t volId = array->GetVolumeID()[ipoint]; | |
33bebad6 | 241 | // check if the volId is valid |
6baf24ce | 242 | if (!AliAlignObj::GetVolPath(volId)) { |
243 | AliError(Form("The volume id %d has no default volume path !", | |
244 | volId)); | |
245 | continue; | |
246 | } | |
98937d93 | 247 | Int_t modId; |
248 | Int_t layerId = AliAlignObj::VolUIDToLayer(volId,modId) | |
249 | - AliAlignObj::kFirstLayer; | |
250 | if (!fArrayIndex[layerId][modId]) { | |
251 | //first entry for this volume | |
252 | fArrayIndex[layerId][modId] = new TArrayI(1000); | |
253 | } | |
254 | else { | |
255 | Int_t size = fArrayIndex[layerId][modId]->GetSize(); | |
256 | // If needed allocate new size | |
257 | if (fLastIndex[layerId][modId] >= size) | |
258 | fArrayIndex[layerId][modId]->Set(size + 1000); | |
259 | } | |
260 | ||
261 | // Check if the index is already filled | |
262 | Bool_t fillIndex = kTRUE; | |
263 | if (fLastIndex[layerId][modId] != 0) { | |
264 | if ((*fArrayIndex[layerId][modId])[fLastIndex[layerId][modId]-1] == iArray) | |
265 | fillIndex = kFALSE; | |
266 | } | |
267 | // Fill the index array and store last filled index | |
268 | if (fillIndex) { | |
269 | (*fArrayIndex[layerId][modId])[fLastIndex[layerId][modId]] = iArray; | |
270 | fLastIndex[layerId][modId]++; | |
271 | } | |
272 | } | |
273 | } | |
274 | ||
275 | } | |
276 | ||
98937d93 | 277 | //______________________________________________________________________________ |
278 | void AliAlignmentTracks::InitIndex() | |
279 | { | |
280 | // Initialize the index arrays | |
281 | Int_t nLayers = AliAlignObj::kLastLayer - AliAlignObj::kFirstLayer; | |
282 | fLastIndex = new Int_t*[nLayers]; | |
283 | fArrayIndex = new TArrayI**[nLayers]; | |
284 | for (Int_t iLayer = 0; iLayer < (AliAlignObj::kLastLayer - AliAlignObj::kFirstLayer); iLayer++) { | |
c041444f | 285 | fLastIndex[iLayer] = new Int_t[AliAlignObj::LayerSize(iLayer + AliAlignObj::kFirstLayer)]; |
286 | fArrayIndex[iLayer] = new TArrayI*[AliAlignObj::LayerSize(iLayer + AliAlignObj::kFirstLayer)]; | |
287 | for (Int_t iModule = 0; iModule < AliAlignObj::LayerSize(iLayer + AliAlignObj::kFirstLayer); iModule++) { | |
98937d93 | 288 | fLastIndex[iLayer][iModule] = 0; |
289 | fArrayIndex[iLayer][iModule] = 0; | |
290 | } | |
291 | } | |
292 | } | |
293 | ||
294 | //______________________________________________________________________________ | |
295 | void AliAlignmentTracks::ResetIndex() | |
296 | { | |
297 | // Reset the value of the last filled index | |
298 | // Do not realocate memory | |
46ae650f | 299 | |
300 | fIsIndexBuilt = kFALSE; | |
301 | ||
302 | for (Int_t iLayer = 0; iLayer < AliAlignObj::kLastLayer - AliAlignObj::kFirstLayer; iLayer++) { | |
c041444f | 303 | for (Int_t iModule = 0; iModule < AliAlignObj::LayerSize(iLayer + AliAlignObj::kFirstLayer); iModule++) { |
98937d93 | 304 | fLastIndex[iLayer][iModule] = 0; |
305 | } | |
306 | } | |
307 | } | |
308 | ||
309 | //______________________________________________________________________________ | |
310 | void AliAlignmentTracks::DeleteIndex() | |
311 | { | |
312 | // Delete the index arrays | |
313 | // Called by the destructor | |
314 | for (Int_t iLayer = 0; iLayer < (AliAlignObj::kLastLayer - AliAlignObj::kFirstLayer); iLayer++) { | |
c041444f | 315 | for (Int_t iModule = 0; iModule < AliAlignObj::LayerSize(iLayer + AliAlignObj::kFirstLayer); iModule++) { |
98937d93 | 316 | if (fArrayIndex[iLayer][iModule]) { |
317 | delete fArrayIndex[iLayer][iModule]; | |
318 | fArrayIndex[iLayer][iModule] = 0; | |
319 | } | |
320 | } | |
321 | delete [] fLastIndex[iLayer]; | |
322 | delete [] fArrayIndex[iLayer]; | |
323 | } | |
324 | delete [] fLastIndex; | |
325 | delete [] fArrayIndex; | |
326 | } | |
327 | ||
328 | //______________________________________________________________________________ | |
46ae650f | 329 | Bool_t AliAlignmentTracks::ReadAlignObjs(const char *alignObjFileName, const char* arrayName) |
98937d93 | 330 | { |
331 | // Read alignment object from a file | |
332 | // To be replaced by a call to CDB | |
46ae650f | 333 | AliWarning(Form("Method not yet implemented (%s in %s) !",arrayName,alignObjFileName)); |
98937d93 | 334 | |
335 | return kFALSE; | |
336 | } | |
337 | ||
338 | //______________________________________________________________________________ | |
339 | void AliAlignmentTracks::InitAlignObjs() | |
340 | { | |
341 | // Initialize the alignment objects array | |
342 | Int_t nLayers = AliAlignObj::kLastLayer - AliAlignObj::kFirstLayer; | |
343 | fAlignObjs = new AliAlignObj**[nLayers]; | |
344 | for (Int_t iLayer = 0; iLayer < (AliAlignObj::kLastLayer - AliAlignObj::kFirstLayer); iLayer++) { | |
c041444f | 345 | fAlignObjs[iLayer] = new AliAlignObj*[AliAlignObj::LayerSize(iLayer + AliAlignObj::kFirstLayer)]; |
346 | for (Int_t iModule = 0; iModule < AliAlignObj::LayerSize(iLayer + AliAlignObj::kFirstLayer); iModule++) { | |
46ae650f | 347 | UShort_t volid = AliAlignObj::LayerToVolUID(iLayer+ AliAlignObj::kFirstLayer,iModule); |
348 | fAlignObjs[iLayer][iModule] = new AliAlignObjAngles("",volid,0,0,0,0,0,0); | |
349 | } | |
98937d93 | 350 | } |
351 | } | |
352 | ||
353 | //______________________________________________________________________________ | |
354 | void AliAlignmentTracks::ResetAlignObjs() | |
355 | { | |
356 | // Reset the alignment objects array | |
357 | for (Int_t iLayer = 0; iLayer < (AliAlignObj::kLastLayer - AliAlignObj::kFirstLayer); iLayer++) { | |
c041444f | 358 | for (Int_t iModule = 0; iModule < AliAlignObj::LayerSize(iLayer + AliAlignObj::kFirstLayer); iModule++) |
98937d93 | 359 | fAlignObjs[iLayer][iModule]->SetPars(0,0,0,0,0,0); |
360 | } | |
361 | } | |
362 | ||
363 | //______________________________________________________________________________ | |
364 | void AliAlignmentTracks::DeleteAlignObjs() | |
365 | { | |
366 | // Delete the alignment objects array | |
367 | for (Int_t iLayer = 0; iLayer < (AliAlignObj::kLastLayer - AliAlignObj::kFirstLayer); iLayer++) { | |
c041444f | 368 | for (Int_t iModule = 0; iModule < AliAlignObj::LayerSize(iLayer + AliAlignObj::kFirstLayer); iModule++) |
98937d93 | 369 | if (fAlignObjs[iLayer][iModule]) |
370 | delete fAlignObjs[iLayer][iModule]; | |
371 | delete [] fAlignObjs[iLayer]; | |
372 | } | |
373 | delete [] fAlignObjs; | |
46ae650f | 374 | fAlignObjs = 0; |
98937d93 | 375 | } |
376 | ||
cc345ce3 | 377 | void AliAlignmentTracks::AlignDetector(AliAlignObj::ELayerID firstLayer, |
378 | AliAlignObj::ELayerID lastLayer, | |
379 | AliAlignObj::ELayerID layerRangeMin, | |
380 | AliAlignObj::ELayerID layerRangeMax, | |
381 | Int_t iterations) | |
98937d93 | 382 | { |
cc345ce3 | 383 | // Align detector volumes within |
384 | // a given layer range | |
385 | // (could be whole detector). | |
386 | // Tracks are fitted only within | |
387 | // the range defined by the user. | |
388 | Int_t nModules = 0; | |
389 | for (Int_t iLayer = firstLayer; iLayer < lastLayer; iLayer++) | |
c041444f | 390 | nModules += AliAlignObj::LayerSize(iLayer); |
cc345ce3 | 391 | TArrayI volIds(nModules); |
392 | ||
393 | Int_t modnum = 0; | |
394 | for (Int_t iLayer = firstLayer; iLayer < lastLayer; iLayer++) { | |
c041444f | 395 | for (Int_t iModule = 0; iModule < AliAlignObj::LayerSize(iLayer); iModule++) { |
cc345ce3 | 396 | UShort_t volId = AliAlignObj::LayerToVolUID(iLayer,iModule); |
397 | volIds.AddAt(volId,modnum); | |
398 | modnum++; | |
399 | } | |
400 | } | |
401 | ||
98937d93 | 402 | while (iterations > 0) { |
cc345ce3 | 403 | AlignVolumes(&volIds,0x0,layerRangeMin,layerRangeMax); |
404 | iterations--; | |
98937d93 | 405 | } |
406 | } | |
407 | ||
408 | //______________________________________________________________________________ | |
409 | void AliAlignmentTracks::AlignLayer(AliAlignObj::ELayerID layer, | |
410 | AliAlignObj::ELayerID layerRangeMin, | |
411 | AliAlignObj::ELayerID layerRangeMax, | |
412 | Int_t iterations) | |
413 | { | |
414 | // Align detector volumes within | |
415 | // a given layer. | |
416 | // Tracks are fitted only within | |
417 | // the range defined by the user. | |
c041444f | 418 | Int_t nModules = AliAlignObj::LayerSize(layer); |
cc345ce3 | 419 | TArrayI volIds(nModules); |
420 | for (Int_t iModule = 0; iModule < nModules; iModule++) { | |
421 | UShort_t volId = AliAlignObj::LayerToVolUID(layer,iModule); | |
422 | volIds.AddAt(volId,iModule); | |
423 | } | |
424 | ||
98937d93 | 425 | while (iterations > 0) { |
cc345ce3 | 426 | AlignVolumes(&volIds,0x0,layerRangeMin,layerRangeMax); |
427 | iterations--; | |
428 | } | |
429 | } | |
430 | ||
431 | //______________________________________________________________________________ | |
432 | void AliAlignmentTracks::AlignVolume(UShort_t volId, UShort_t volIdFit, | |
433 | Int_t iterations) | |
434 | { | |
435 | // Align single detector volume to | |
436 | // another volume. | |
437 | // Tracks are fitted only within | |
438 | // the second volume. | |
439 | TArrayI volIds(1); | |
440 | volIds.AddAt(volId,0); | |
441 | TArrayI volIdsFit(1); | |
442 | volIdsFit.AddAt(volIdFit,0); | |
443 | ||
444 | while (iterations > 0) { | |
445 | AlignVolumes(&volIds,&volIdsFit); | |
98937d93 | 446 | iterations--; |
447 | } | |
448 | } | |
449 | ||
450 | //______________________________________________________________________________ | |
cc345ce3 | 451 | void AliAlignmentTracks::AlignVolumes(const TArrayI *volids, const TArrayI *volidsfit, |
98937d93 | 452 | AliAlignObj::ELayerID layerRangeMin, |
46ae650f | 453 | AliAlignObj::ELayerID layerRangeMax, |
454 | Int_t iterations) | |
98937d93 | 455 | { |
cc345ce3 | 456 | // Align a set of detector volumes. |
98937d93 | 457 | // Tracks are fitted only within |
46ae650f | 458 | // the range defined by the user |
459 | // (by layerRangeMin and layerRangeMax) | |
cc345ce3 | 460 | // or within the set of volidsfit |
46ae650f | 461 | // Repeat the procedure 'iterations' times |
98937d93 | 462 | |
cc345ce3 | 463 | Int_t nVolIds = volids->GetSize(); |
464 | if (nVolIds == 0) { | |
465 | AliError("Volume IDs array is empty!"); | |
466 | return; | |
467 | } | |
98937d93 | 468 | |
cc345ce3 | 469 | // Load only the tracks with at least one |
470 | // space point in the set of volume (volids) | |
98937d93 | 471 | BuildIndex(); |
472 | AliTrackPointArray **points; | |
46ae650f | 473 | // Start the iterations |
474 | while (iterations > 0) { | |
cc345ce3 | 475 | Int_t nArrays = LoadPoints(volids, points); |
46ae650f | 476 | if (nArrays == 0) return; |
477 | ||
478 | AliTrackResiduals *minimizer = CreateMinimizer(); | |
479 | minimizer->SetNTracks(nArrays); | |
cc345ce3 | 480 | minimizer->InitAlignObj(); |
46ae650f | 481 | AliTrackFitter *fitter = CreateFitter(); |
482 | for (Int_t iArray = 0; iArray < nArrays; iArray++) { | |
33bebad6 | 483 | if (!points[iArray]) continue; |
46ae650f | 484 | fitter->SetTrackPointArray(points[iArray], kFALSE); |
33bebad6 | 485 | if (fitter->Fit(volids,volidsfit,layerRangeMin,layerRangeMax) == kFALSE) continue; |
46ae650f | 486 | AliTrackPointArray *pVolId,*pTrack; |
487 | fitter->GetTrackResiduals(pVolId,pTrack); | |
488 | minimizer->AddTrackPointArrays(pVolId,pTrack); | |
489 | } | |
490 | minimizer->Minimize(); | |
cc345ce3 | 491 | |
492 | // Update the alignment object(s) | |
91264393 | 493 | if (fDoUpdate) for (Int_t iVolId = 0; iVolId < nVolIds; iVolId++) { |
cc345ce3 | 494 | UShort_t volid = (*volids)[iVolId]; |
495 | Int_t iModule; | |
496 | AliAlignObj::ELayerID iLayer = AliAlignObj::VolUIDToLayer(volid,iModule); | |
91264393 | 497 | AliAlignObj *alignObj = fAlignObjs[iLayer-AliAlignObj::kFirstLayer][iModule]; |
cc345ce3 | 498 | *alignObj *= *minimizer->GetAlignObj(); |
499 | alignObj->Print(""); | |
500 | } | |
98937d93 | 501 | |
46ae650f | 502 | UnloadPoints(nArrays, points); |
503 | ||
504 | iterations--; | |
98937d93 | 505 | } |
98937d93 | 506 | } |
507 | ||
508 | //______________________________________________________________________________ | |
cc345ce3 | 509 | Int_t AliAlignmentTracks::LoadPoints(const TArrayI *volids, AliTrackPointArray** &points) |
98937d93 | 510 | { |
511 | // Load track point arrays with at least | |
cc345ce3 | 512 | // one space point in a given set of detector |
513 | // volumes (array volids). | |
98937d93 | 514 | // Use the already created tree index for |
515 | // fast access. | |
98937d93 | 516 | |
46ae650f | 517 | if (!fPointsTree) { |
cc345ce3 | 518 | AliError("Tree with the space point arrays not initialized!"); |
98937d93 | 519 | points = 0; |
520 | return 0; | |
521 | } | |
522 | ||
cc345ce3 | 523 | Int_t nVolIds = volids->GetSize(); |
524 | if (nVolIds == 0) { | |
525 | AliError("Volume IDs array is empty!"); | |
526 | points = 0; | |
527 | return 0; | |
528 | } | |
529 | ||
530 | Int_t nArrays = 0; | |
531 | for (Int_t iVolId = 0; iVolId < nVolIds; iVolId++) { | |
532 | UShort_t volid = (*volids)[iVolId]; | |
533 | Int_t iModule; | |
534 | AliAlignObj::ELayerID iLayer = AliAlignObj::VolUIDToLayer(volid,iModule); | |
535 | ||
536 | // In case of empty index | |
537 | if (fLastIndex[iLayer-AliAlignObj::kFirstLayer][iModule] == 0) { | |
538 | AliWarning(Form("There are no space-points belonging to the volume which is to be aligned (Volume ID =%d)!",volid)); | |
539 | continue; | |
540 | } | |
541 | nArrays += fLastIndex[iLayer-AliAlignObj::kFirstLayer][iModule]; | |
542 | } | |
46ae650f | 543 | |
46ae650f | 544 | if (nArrays == 0) { |
cc345ce3 | 545 | AliError("There are no space-points belonging to all of the volumes which are to be aligned!"); |
98937d93 | 546 | points = 0; |
547 | return 0; | |
548 | } | |
549 | ||
98937d93 | 550 | AliTrackPointArray* array = 0; |
551 | fPointsTree->SetBranchAddress("SP", &array); | |
552 | ||
cc345ce3 | 553 | // Allocate the pointer to the space-point arrays |
98937d93 | 554 | points = new AliTrackPointArray*[nArrays]; |
5caa5567 | 555 | for (Int_t i = 0; i < nArrays; i++) points[i] = 0x0; |
cc345ce3 | 556 | |
557 | // Init the array used to flag already loaded tree entries | |
558 | Bool_t *indexUsed = new Bool_t[fPointsTree->GetEntries()]; | |
559 | for (Int_t i = 0; i < fPointsTree->GetEntries(); i++) | |
560 | indexUsed[i] = kFALSE; | |
561 | ||
562 | // Start the loop over the volume ids | |
563 | Int_t iArray = 0; | |
564 | for (Int_t iVolId = 0; iVolId < nVolIds; iVolId++) { | |
565 | UShort_t volid = (*volids)[iVolId]; | |
566 | Int_t iModule; | |
567 | AliAlignObj::ELayerID iLayer = AliAlignObj::VolUIDToLayer(volid,iModule); | |
568 | ||
569 | Int_t nArraysId = fLastIndex[iLayer-AliAlignObj::kFirstLayer][iModule]; | |
570 | TArrayI *index = fArrayIndex[iLayer-AliAlignObj::kFirstLayer][iModule]; | |
571 | AliTrackPoint p; | |
572 | ||
573 | for (Int_t iArrayId = 0; iArrayId < nArraysId; iArrayId++) { | |
574 | ||
575 | // Get tree entry | |
576 | Int_t entry = (*index)[iArrayId]; | |
577 | if (indexUsed[entry] == kTRUE) continue; | |
578 | fPointsTree->GetEvent(entry); | |
579 | if (!array) { | |
580 | AliWarning("Wrong space point array index!"); | |
581 | continue; | |
46ae650f | 582 | } |
cc345ce3 | 583 | indexUsed[entry] = kTRUE; |
584 | ||
585 | // Get the space-point array | |
586 | Int_t nPoints = array->GetNPoints(); | |
587 | points[iArray] = new AliTrackPointArray(nPoints); | |
588 | for (Int_t iPoint = 0; iPoint < nPoints; iPoint++) { | |
589 | array->GetPoint(p,iPoint); | |
590 | Int_t modnum; | |
591 | AliAlignObj::ELayerID layer = AliAlignObj::VolUIDToLayer(p.GetVolumeID(),modnum); | |
33bebad6 | 592 | // check if the layer id is valid |
6baf24ce | 593 | if ((layer < AliAlignObj::kFirstLayer) || |
594 | (layer >= AliAlignObj::kLastLayer)) { | |
595 | AliError(Form("Layer index is invalid: %d (%d -> %d) !", | |
596 | layer,AliAlignObj::kFirstLayer,AliAlignObj::kLastLayer-1)); | |
597 | continue; | |
598 | } | |
599 | if ((modnum >= AliAlignObj::LayerSize(layer)) || | |
600 | (modnum < 0)) { | |
601 | AliError(Form("Module number inside layer %d is invalid: %d (0 -> %d)", | |
602 | layer,modnum,AliAlignObj::LayerSize(layer))); | |
603 | continue; | |
604 | } | |
cc345ce3 | 605 | |
606 | // Misalignment is introduced here | |
607 | // Switch it off in case of real | |
608 | // alignment job! | |
609 | if (fMisalignObjs) { | |
610 | AliAlignObj *misalignObj = fMisalignObjs[layer-AliAlignObj::kFirstLayer][modnum]; | |
611 | if (misalignObj) | |
612 | misalignObj->Transform(p); | |
613 | } | |
614 | // End of misalignment | |
46ae650f | 615 | |
cc345ce3 | 616 | AliAlignObj *alignObj = fAlignObjs[layer-AliAlignObj::kFirstLayer][modnum]; |
617 | alignObj->Transform(p); | |
618 | points[iArray]->AddPoint(iPoint,&p); | |
619 | } | |
620 | iArray++; | |
98937d93 | 621 | } |
622 | } | |
623 | ||
cc345ce3 | 624 | |
625 | delete [] indexUsed; | |
626 | ||
98937d93 | 627 | return nArrays; |
628 | } | |
629 | ||
630 | //______________________________________________________________________________ | |
631 | void AliAlignmentTracks::UnloadPoints(Int_t n, AliTrackPointArray **points) | |
632 | { | |
633 | // Unload track point arrays for a given | |
634 | // detector volume | |
635 | for (Int_t iArray = 0; iArray < n; iArray++) | |
636 | delete points[iArray]; | |
637 | delete [] points; | |
638 | } | |
639 | ||
640 | //______________________________________________________________________________ | |
641 | AliTrackFitter *AliAlignmentTracks::CreateFitter() | |
642 | { | |
643 | // Check if the user has already supplied | |
644 | // a track fitter object. | |
645 | // If not, create a default one. | |
646 | if (!fTrackFitter) | |
647 | fTrackFitter = new AliTrackFitterRieman; | |
648 | ||
649 | return fTrackFitter; | |
650 | } | |
651 | ||
652 | //______________________________________________________________________________ | |
653 | AliTrackResiduals *AliAlignmentTracks::CreateMinimizer() | |
654 | { | |
655 | // Check if the user has already supplied | |
656 | // a track residuals minimizer object. | |
657 | // If not, create a default one. | |
658 | if (!fMinimizer) | |
659 | fMinimizer = new AliTrackResidualsChi2; | |
660 | ||
661 | return fMinimizer; | |
662 | } | |
46ae650f | 663 | |
664 | //______________________________________________________________________________ | |
665 | Bool_t AliAlignmentTracks::Misalign(const char *misalignObjFileName, const char* arrayName) | |
666 | { | |
667 | // The method reads from a file a set of AliAlignObj which are | |
668 | // then used to apply misalignments directly on the track | |
669 | // space-points. The method is supposed to be used only for | |
670 | // fast development and debugging of the alignment algorithms. | |
671 | // Be careful not to use it in the case of 'real' alignment | |
672 | // scenario since it will bias the results. | |
673 | ||
674 | // Initialize the misalignment objects array | |
675 | Int_t nLayers = AliAlignObj::kLastLayer - AliAlignObj::kFirstLayer; | |
676 | fMisalignObjs = new AliAlignObj**[nLayers]; | |
677 | for (Int_t iLayer = 0; iLayer < (AliAlignObj::kLastLayer - AliAlignObj::kFirstLayer); iLayer++) { | |
c041444f | 678 | fMisalignObjs[iLayer] = new AliAlignObj*[AliAlignObj::LayerSize(iLayer + AliAlignObj::kFirstLayer)]; |
679 | for (Int_t iModule = 0; iModule < AliAlignObj::LayerSize(iLayer + AliAlignObj::kFirstLayer); iModule++) | |
46ae650f | 680 | fMisalignObjs[iLayer][iModule] = 0x0; |
681 | } | |
682 | ||
683 | // Open the misliagnment file and load the array with | |
684 | // misalignment objects | |
685 | TFile* inFile = TFile::Open(misalignObjFileName,"READ"); | |
686 | if (!inFile || !inFile->IsOpen()) { | |
687 | AliError(Form("Could not open misalignment file %s !",misalignObjFileName)); | |
688 | return kFALSE; | |
689 | } | |
690 | ||
691 | TClonesArray* array = ((TClonesArray*) inFile->Get(arrayName)); | |
692 | if (!array) { | |
693 | AliError(Form("Could not find misalignment array %s in the file %s !",arrayName,misalignObjFileName)); | |
694 | inFile->Close(); | |
695 | return kFALSE; | |
696 | } | |
697 | inFile->Close(); | |
698 | ||
699 | // Store the misalignment objects for further usage | |
700 | Int_t nObjs = array->GetEntriesFast(); | |
701 | AliAlignObj::ELayerID layerId; // volume layer | |
702 | Int_t modId; // volume ID inside the layer | |
703 | for(Int_t i=0; i<nObjs; i++) | |
704 | { | |
705 | AliAlignObj* alObj = (AliAlignObj*)array->UncheckedAt(i); | |
706 | alObj->GetVolUID(layerId,modId); | |
707 | fMisalignObjs[layerId-AliAlignObj::kFirstLayer][modId] = alObj; | |
708 | } | |
709 | return kTRUE; | |
710 | } |