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