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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), | |
46ae650f | 47 | fMisalignObjs(0), |
98937d93 | 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), | |
46ae650f | 65 | fMisalignObjs(0), |
98937d93 | 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), | |
46ae650f | 85 | fMisalignObjs(0), |
98937d93 | 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 | |
46ae650f | 228 | if (fIsIndexBuilt) return; |
229 | ||
230 | fIsIndexBuilt = kTRUE; | |
98937d93 | 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; | |
46ae650f | 240 | fPointsTree = (TTree*) fPointsFile->Get("spTree"); |
241 | if (!fPointsTree) { | |
98937d93 | 242 | AliWarning("No pointsTree found!"); |
243 | return; | |
244 | } | |
46ae650f | 245 | fPointsTree->SetBranchAddress("SP", &array); |
98937d93 | 246 | |
46ae650f | 247 | Int_t nArrays = fPointsTree->GetEntries(); |
98937d93 | 248 | for (Int_t iArray = 0; iArray < nArrays; iArray++) |
249 | { | |
46ae650f | 250 | fPointsTree->GetEvent(iArray); |
98937d93 | 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::BuildIndexLayer(AliAlignObj::ELayerID layer) | |
286 | // { | |
287 | // } | |
288 | ||
289 | // //______________________________________________________________________________ | |
290 | // void AliAlignmentTracks::BuildIndexVolume(UShort_t volid) | |
291 | // { | |
292 | // } | |
293 | ||
294 | //______________________________________________________________________________ | |
295 | void AliAlignmentTracks::InitIndex() | |
296 | { | |
297 | // Initialize the index arrays | |
298 | Int_t nLayers = AliAlignObj::kLastLayer - AliAlignObj::kFirstLayer; | |
299 | fLastIndex = new Int_t*[nLayers]; | |
300 | fArrayIndex = new TArrayI**[nLayers]; | |
301 | for (Int_t iLayer = 0; iLayer < (AliAlignObj::kLastLayer - AliAlignObj::kFirstLayer); iLayer++) { | |
302 | fLastIndex[iLayer] = new Int_t[AliAlignObj::LayerSize(iLayer)]; | |
303 | fArrayIndex[iLayer] = new TArrayI*[AliAlignObj::LayerSize(iLayer)]; | |
304 | for (Int_t iModule = 0; iModule < AliAlignObj::LayerSize(iLayer); iModule++) { | |
305 | fLastIndex[iLayer][iModule] = 0; | |
306 | fArrayIndex[iLayer][iModule] = 0; | |
307 | } | |
308 | } | |
309 | } | |
310 | ||
311 | //______________________________________________________________________________ | |
312 | void AliAlignmentTracks::ResetIndex() | |
313 | { | |
314 | // Reset the value of the last filled index | |
315 | // Do not realocate memory | |
46ae650f | 316 | |
317 | fIsIndexBuilt = kFALSE; | |
318 | ||
319 | for (Int_t iLayer = 0; iLayer < AliAlignObj::kLastLayer - AliAlignObj::kFirstLayer; iLayer++) { | |
98937d93 | 320 | for (Int_t iModule = 0; iModule < AliAlignObj::LayerSize(iLayer); iModule++) { |
321 | fLastIndex[iLayer][iModule] = 0; | |
322 | } | |
323 | } | |
324 | } | |
325 | ||
326 | //______________________________________________________________________________ | |
327 | void AliAlignmentTracks::DeleteIndex() | |
328 | { | |
329 | // Delete the index arrays | |
330 | // Called by the destructor | |
331 | for (Int_t iLayer = 0; iLayer < (AliAlignObj::kLastLayer - AliAlignObj::kFirstLayer); iLayer++) { | |
332 | for (Int_t iModule = 0; iModule < AliAlignObj::LayerSize(iLayer); iModule++) { | |
333 | if (fArrayIndex[iLayer][iModule]) { | |
334 | delete fArrayIndex[iLayer][iModule]; | |
335 | fArrayIndex[iLayer][iModule] = 0; | |
336 | } | |
337 | } | |
338 | delete [] fLastIndex[iLayer]; | |
339 | delete [] fArrayIndex[iLayer]; | |
340 | } | |
341 | delete [] fLastIndex; | |
342 | delete [] fArrayIndex; | |
343 | } | |
344 | ||
345 | //______________________________________________________________________________ | |
46ae650f | 346 | Bool_t AliAlignmentTracks::ReadAlignObjs(const char *alignObjFileName, const char* arrayName) |
98937d93 | 347 | { |
348 | // Read alignment object from a file | |
349 | // To be replaced by a call to CDB | |
46ae650f | 350 | AliWarning(Form("Method not yet implemented (%s in %s) !",arrayName,alignObjFileName)); |
98937d93 | 351 | |
352 | return kFALSE; | |
353 | } | |
354 | ||
355 | //______________________________________________________________________________ | |
356 | void AliAlignmentTracks::InitAlignObjs() | |
357 | { | |
358 | // Initialize the alignment objects array | |
359 | Int_t nLayers = AliAlignObj::kLastLayer - AliAlignObj::kFirstLayer; | |
360 | fAlignObjs = new AliAlignObj**[nLayers]; | |
361 | for (Int_t iLayer = 0; iLayer < (AliAlignObj::kLastLayer - AliAlignObj::kFirstLayer); iLayer++) { | |
362 | fAlignObjs[iLayer] = new AliAlignObj*[AliAlignObj::LayerSize(iLayer)]; | |
46ae650f | 363 | for (Int_t iModule = 0; iModule < AliAlignObj::LayerSize(iLayer); iModule++) { |
364 | UShort_t volid = AliAlignObj::LayerToVolUID(iLayer+ AliAlignObj::kFirstLayer,iModule); | |
365 | fAlignObjs[iLayer][iModule] = new AliAlignObjAngles("",volid,0,0,0,0,0,0); | |
366 | } | |
98937d93 | 367 | } |
368 | } | |
369 | ||
370 | //______________________________________________________________________________ | |
371 | void AliAlignmentTracks::ResetAlignObjs() | |
372 | { | |
373 | // Reset 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); iModule++) | |
376 | fAlignObjs[iLayer][iModule]->SetPars(0,0,0,0,0,0); | |
377 | } | |
378 | } | |
379 | ||
380 | //______________________________________________________________________________ | |
381 | void AliAlignmentTracks::DeleteAlignObjs() | |
382 | { | |
383 | // Delete the alignment objects array | |
384 | for (Int_t iLayer = 0; iLayer < (AliAlignObj::kLastLayer - AliAlignObj::kFirstLayer); iLayer++) { | |
385 | for (Int_t iModule = 0; iModule < AliAlignObj::LayerSize(iLayer); iModule++) | |
386 | if (fAlignObjs[iLayer][iModule]) | |
387 | delete fAlignObjs[iLayer][iModule]; | |
388 | delete [] fAlignObjs[iLayer]; | |
389 | } | |
390 | delete [] fAlignObjs; | |
46ae650f | 391 | fAlignObjs = 0; |
98937d93 | 392 | } |
393 | ||
394 | //______________________________________________________________________________ | |
395 | void AliAlignmentTracks::Align(Int_t iterations) | |
396 | { | |
397 | // This method is just an example | |
398 | // how one can user AlignLayer and | |
399 | // AlignVolume methods to construct | |
400 | // a custom alignment procedure | |
401 | while (iterations > 0) { | |
402 | // First inward pass | |
403 | AlignLayer(AliAlignObj::kTPC1); | |
404 | AlignLayer(AliAlignObj::kSSD2); | |
405 | AlignLayer(AliAlignObj::kSSD1); | |
406 | AlignLayer(AliAlignObj::kSDD2); | |
407 | AlignLayer(AliAlignObj::kSDD1); | |
408 | AlignLayer(AliAlignObj::kSPD2); | |
409 | AlignLayer(AliAlignObj::kSPD1); | |
410 | // Outward pass | |
411 | AlignLayer(AliAlignObj::kSPD2); | |
412 | AlignLayer(AliAlignObj::kSDD1); | |
413 | AlignLayer(AliAlignObj::kSDD2); | |
414 | AlignLayer(AliAlignObj::kSSD1); | |
415 | AlignLayer(AliAlignObj::kSSD2); | |
416 | AlignLayer(AliAlignObj::kTPC1); | |
417 | AlignLayer(AliAlignObj::kTPC2); | |
418 | AlignLayer(AliAlignObj::kTRD1); | |
419 | AlignLayer(AliAlignObj::kTRD2); | |
420 | AlignLayer(AliAlignObj::kTRD3); | |
421 | AlignLayer(AliAlignObj::kTRD4); | |
422 | AlignLayer(AliAlignObj::kTRD5); | |
423 | AlignLayer(AliAlignObj::kTRD6); | |
424 | AlignLayer(AliAlignObj::kTOF); | |
425 | // Again inward | |
426 | AlignLayer(AliAlignObj::kTRD6); | |
427 | AlignLayer(AliAlignObj::kTRD5); | |
428 | AlignLayer(AliAlignObj::kTRD4); | |
429 | AlignLayer(AliAlignObj::kTRD3); | |
430 | AlignLayer(AliAlignObj::kTRD2); | |
431 | AlignLayer(AliAlignObj::kTRD1); | |
432 | AlignLayer(AliAlignObj::kTPC2); | |
433 | } | |
434 | } | |
435 | ||
436 | //______________________________________________________________________________ | |
437 | void AliAlignmentTracks::AlignLayer(AliAlignObj::ELayerID layer, | |
438 | AliAlignObj::ELayerID layerRangeMin, | |
439 | AliAlignObj::ELayerID layerRangeMax, | |
440 | Int_t iterations) | |
441 | { | |
442 | // Align detector volumes within | |
443 | // a given layer. | |
444 | // Tracks are fitted only within | |
445 | // the range defined by the user. | |
46ae650f | 446 | Int_t nModules = AliAlignObj::LayerSize(layer - AliAlignObj::kFirstLayer); |
98937d93 | 447 | while (iterations > 0) { |
46ae650f | 448 | for (Int_t iModule = 0; iModule < nModules; iModule++) { |
98937d93 | 449 | UShort_t volId = AliAlignObj::LayerToVolUID(layer,iModule); |
450 | AlignVolume(volId,layerRangeMin,layerRangeMax); | |
451 | } | |
452 | iterations--; | |
453 | } | |
454 | } | |
455 | ||
456 | //______________________________________________________________________________ | |
46ae650f | 457 | void AliAlignmentTracks::AlignVolume(UShort_t volid, UShort_t volidfit, |
98937d93 | 458 | AliAlignObj::ELayerID layerRangeMin, |
46ae650f | 459 | AliAlignObj::ELayerID layerRangeMax, |
460 | Int_t iterations) | |
98937d93 | 461 | { |
462 | // Align a single detector volume. | |
463 | // Tracks are fitted only within | |
46ae650f | 464 | // the range defined by the user |
465 | // (by layerRangeMin and layerRangeMax) | |
466 | // or within the volid2 | |
467 | // Repeat the procedure 'iterations' times | |
98937d93 | 468 | |
469 | // First take the alignment object to be updated | |
470 | Int_t iModule; | |
471 | AliAlignObj::ELayerID iLayer = AliAlignObj::VolUIDToLayer(volid,iModule); | |
46ae650f | 472 | AliAlignObj *alignObj = fAlignObjs[iLayer-AliAlignObj::kFirstLayer][iModule]; |
98937d93 | 473 | |
474 | // Then load only the tracks with at least one | |
475 | // space point in the volume (volid) | |
476 | BuildIndex(); | |
477 | AliTrackPointArray **points; | |
46ae650f | 478 | // Start the iterations |
479 | while (iterations > 0) { | |
480 | Int_t nArrays = LoadPoints(volid, points); | |
481 | if (nArrays == 0) return; | |
482 | ||
483 | AliTrackResiduals *minimizer = CreateMinimizer(); | |
484 | minimizer->SetNTracks(nArrays); | |
485 | minimizer->SetAlignObj(alignObj); | |
486 | AliTrackFitter *fitter = CreateFitter(); | |
487 | for (Int_t iArray = 0; iArray < nArrays; iArray++) { | |
488 | fitter->SetTrackPointArray(points[iArray], kFALSE); | |
489 | fitter->Fit(volid,volidfit,layerRangeMin,layerRangeMax); | |
490 | AliTrackPointArray *pVolId,*pTrack; | |
491 | fitter->GetTrackResiduals(pVolId,pTrack); | |
492 | minimizer->AddTrackPointArrays(pVolId,pTrack); | |
493 | } | |
494 | minimizer->Minimize(); | |
495 | *alignObj *= *minimizer->GetAlignObj(); | |
98937d93 | 496 | |
46ae650f | 497 | UnloadPoints(nArrays, points); |
498 | ||
499 | iterations--; | |
98937d93 | 500 | } |
98937d93 | 501 | } |
502 | ||
503 | //______________________________________________________________________________ | |
504 | Int_t AliAlignmentTracks::LoadPoints(UShort_t volid, AliTrackPointArray** &points) | |
505 | { | |
506 | // Load track point arrays with at least | |
507 | // one space point in a given detector | |
508 | // volume (volid). | |
509 | // Use the already created tree index for | |
510 | // fast access. | |
98937d93 | 511 | |
46ae650f | 512 | if (!fPointsTree) { |
513 | AliWarning("Tree with the space point arrays not initialized!"); | |
98937d93 | 514 | points = 0; |
515 | return 0; | |
516 | } | |
517 | ||
46ae650f | 518 | Int_t iModule; |
519 | AliAlignObj::ELayerID iLayer = AliAlignObj::VolUIDToLayer(volid,iModule); | |
520 | Int_t nArrays = fLastIndex[iLayer-AliAlignObj::kFirstLayer][iModule]; | |
521 | ||
522 | // In case of empty index | |
523 | if (nArrays == 0) { | |
98937d93 | 524 | points = 0; |
525 | return 0; | |
526 | } | |
527 | ||
98937d93 | 528 | AliTrackPointArray* array = 0; |
529 | fPointsTree->SetBranchAddress("SP", &array); | |
530 | ||
531 | points = new AliTrackPointArray*[nArrays]; | |
46ae650f | 532 | TArrayI *index = fArrayIndex[iLayer-AliAlignObj::kFirstLayer][iModule]; |
98937d93 | 533 | AliTrackPoint p; |
98937d93 | 534 | for (Int_t iArray = 0; iArray < nArrays; iArray++) { |
535 | fPointsTree->GetEvent((*index)[iArray]); | |
536 | if (!array) { | |
537 | AliWarning("Wrong space point array index!"); | |
538 | continue; | |
539 | } | |
540 | Int_t nPoints = array->GetNPoints(); | |
541 | points[iArray] = new AliTrackPointArray(nPoints); | |
542 | for (Int_t iPoint = 0; iPoint < nPoints; iPoint++) { | |
543 | array->GetPoint(p,iPoint); | |
46ae650f | 544 | Int_t modnum; |
545 | AliAlignObj::ELayerID layer = AliAlignObj::VolUIDToLayer(p.GetVolumeID(),modnum); | |
546 | ||
547 | // Misalignment is introduced here | |
548 | // Switch it off in case of real | |
549 | // alignment job! | |
550 | if (fMisalignObjs) { | |
551 | AliAlignObj *misalignObj = fMisalignObjs[layer-AliAlignObj::kFirstLayer][modnum]; | |
552 | if (misalignObj) | |
553 | misalignObj->Transform(p); | |
554 | } | |
555 | // End of misalignment | |
556 | ||
557 | AliAlignObj *alignObj = fAlignObjs[layer-AliAlignObj::kFirstLayer][modnum]; | |
558 | alignObj->Transform(p); | |
98937d93 | 559 | points[iArray]->AddPoint(iPoint,&p); |
560 | } | |
561 | } | |
562 | ||
563 | return nArrays; | |
564 | } | |
565 | ||
566 | //______________________________________________________________________________ | |
567 | void AliAlignmentTracks::UnloadPoints(Int_t n, AliTrackPointArray **points) | |
568 | { | |
569 | // Unload track point arrays for a given | |
570 | // detector volume | |
571 | for (Int_t iArray = 0; iArray < n; iArray++) | |
572 | delete points[iArray]; | |
573 | delete [] points; | |
574 | } | |
575 | ||
576 | //______________________________________________________________________________ | |
577 | AliTrackFitter *AliAlignmentTracks::CreateFitter() | |
578 | { | |
579 | // Check if the user has already supplied | |
580 | // a track fitter object. | |
581 | // If not, create a default one. | |
582 | if (!fTrackFitter) | |
583 | fTrackFitter = new AliTrackFitterRieman; | |
584 | ||
585 | return fTrackFitter; | |
586 | } | |
587 | ||
588 | //______________________________________________________________________________ | |
589 | AliTrackResiduals *AliAlignmentTracks::CreateMinimizer() | |
590 | { | |
591 | // Check if the user has already supplied | |
592 | // a track residuals minimizer object. | |
593 | // If not, create a default one. | |
594 | if (!fMinimizer) | |
595 | fMinimizer = new AliTrackResidualsChi2; | |
596 | ||
597 | return fMinimizer; | |
598 | } | |
46ae650f | 599 | |
600 | //______________________________________________________________________________ | |
601 | Bool_t AliAlignmentTracks::Misalign(const char *misalignObjFileName, const char* arrayName) | |
602 | { | |
603 | // The method reads from a file a set of AliAlignObj which are | |
604 | // then used to apply misalignments directly on the track | |
605 | // space-points. The method is supposed to be used only for | |
606 | // fast development and debugging of the alignment algorithms. | |
607 | // Be careful not to use it in the case of 'real' alignment | |
608 | // scenario since it will bias the results. | |
609 | ||
610 | // Initialize the misalignment objects array | |
611 | Int_t nLayers = AliAlignObj::kLastLayer - AliAlignObj::kFirstLayer; | |
612 | fMisalignObjs = new AliAlignObj**[nLayers]; | |
613 | for (Int_t iLayer = 0; iLayer < (AliAlignObj::kLastLayer - AliAlignObj::kFirstLayer); iLayer++) { | |
614 | fMisalignObjs[iLayer] = new AliAlignObj*[AliAlignObj::LayerSize(iLayer)]; | |
615 | for (Int_t iModule = 0; iModule < AliAlignObj::LayerSize(iLayer); iModule++) | |
616 | fMisalignObjs[iLayer][iModule] = 0x0; | |
617 | } | |
618 | ||
619 | // Open the misliagnment file and load the array with | |
620 | // misalignment objects | |
621 | TFile* inFile = TFile::Open(misalignObjFileName,"READ"); | |
622 | if (!inFile || !inFile->IsOpen()) { | |
623 | AliError(Form("Could not open misalignment file %s !",misalignObjFileName)); | |
624 | return kFALSE; | |
625 | } | |
626 | ||
627 | TClonesArray* array = ((TClonesArray*) inFile->Get(arrayName)); | |
628 | if (!array) { | |
629 | AliError(Form("Could not find misalignment array %s in the file %s !",arrayName,misalignObjFileName)); | |
630 | inFile->Close(); | |
631 | return kFALSE; | |
632 | } | |
633 | inFile->Close(); | |
634 | ||
635 | // Store the misalignment objects for further usage | |
636 | Int_t nObjs = array->GetEntriesFast(); | |
637 | AliAlignObj::ELayerID layerId; // volume layer | |
638 | Int_t modId; // volume ID inside the layer | |
639 | for(Int_t i=0; i<nObjs; i++) | |
640 | { | |
641 | AliAlignObj* alObj = (AliAlignObj*)array->UncheckedAt(i); | |
642 | alObj->GetVolUID(layerId,modId); | |
643 | fMisalignObjs[layerId-AliAlignObj::kFirstLayer][modId] = alObj; | |
644 | } | |
645 | return kTRUE; | |
646 | } |