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52c19022 | 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: AliTRDgtuTMU.cxx 28397 2008-09-02 09:33:00Z cblume $ */ | |
17 | ||
18 | //////////////////////////////////////////////////////////////////////////// | |
19 | // // | |
20 | // Track Matching Unit (TMU) simulation // | |
21 | // // | |
22 | // Author: J. Klein (Jochen.Klein@cern.ch) // | |
23 | // // | |
24 | //////////////////////////////////////////////////////////////////////////// | |
25 | ||
26 | #include "TTree.h" | |
27 | #include "TList.h" | |
28 | #include "TVectorD.h" | |
29 | #include "TMath.h" | |
30 | ||
31 | #include "AliESDEvent.h" | |
32 | #include "AliESDTrdTrack.h" | |
33 | ||
34 | #include "AliLog.h" | |
35 | #include "AliTRDgeometry.h" | |
36 | #include "AliTRDpadPlane.h" | |
37 | ||
38 | #include "AliTRDgtuParam.h" | |
39 | #include "AliTRDgtuTMU.h" | |
40 | #include "AliTRDtrackGTU.h" | |
41 | ||
42 | ClassImp(AliTRDgtuTMU) | |
43 | ||
44 | AliTRDgtuTMU::AliTRDgtuTMU(Int_t stack, Int_t sector) : | |
45 | TObject(), | |
46 | fTracklets(0x0), | |
44eafcf2 | 47 | fTrackletsPostInput(0x0), |
52c19022 | 48 | fZChannelTracklets(0x0), |
49 | fTracks(0x0), | |
50 | fGtuParam(0x0), | |
51 | fStack(-1), | |
52 | fSector(-1) | |
53 | { | |
36dc3337 | 54 | // constructor which initializes the position information of the TMU |
55 | ||
52c19022 | 56 | fGtuParam = AliTRDgtuParam::Instance(); |
44eafcf2 | 57 | |
58 | // store tracklets per link | |
59 | fTracklets = new TObjArray*[fGtuParam->GetNLinks()]; | |
60 | for (Int_t iLink = 0; iLink < fGtuParam->GetNLinks(); iLink++) { | |
61 | fTracklets[iLink] = new TObjArray(); | |
62 | } | |
63 | ||
64 | // tracklets after input units per layer | |
65 | fTrackletsPostInput = new TObjArray*[fGtuParam->GetNLayers()]; | |
52c19022 | 66 | fZChannelTracklets = new TList*[fGtuParam->GetNLayers()]; |
67 | for (Int_t layer = 0; layer < fGtuParam->GetNLayers(); layer++) { | |
52c19022 | 68 | fZChannelTracklets[layer] = new TList[fGtuParam->GetNZChannels()]; |
44eafcf2 | 69 | fTrackletsPostInput[layer] = new TObjArray(); |
52c19022 | 70 | } |
44eafcf2 | 71 | |
52c19022 | 72 | fTracks = new TList*[fGtuParam->GetNZChannels()]; |
73 | for (Int_t zch = 0; zch < fGtuParam->GetNZChannels(); zch++) { | |
74 | fTracks[zch] = new TList[fGtuParam->GetNRefLayers()]; | |
75 | } | |
44eafcf2 | 76 | |
5f006bd7 | 77 | if (stack > -1) |
52c19022 | 78 | SetStack(stack); |
79 | if (sector > -1) | |
80 | SetSector(sector); | |
81 | } | |
82 | ||
5f006bd7 | 83 | AliTRDgtuTMU::~AliTRDgtuTMU() |
52c19022 | 84 | { |
36dc3337 | 85 | // destructor |
86 | ||
52c19022 | 87 | for (Int_t zch = 0; zch < fGtuParam->GetNZChannels(); zch++) { |
88 | delete [] fTracks[zch]; | |
89 | } | |
90 | delete [] fTracks; | |
91 | for (Int_t layer = 0; layer < fGtuParam->GetNLayers(); layer++) { | |
52c19022 | 92 | delete [] fZChannelTracklets[layer]; |
44eafcf2 | 93 | // delete [] fTrackletsPostInput[layer]; |
52c19022 | 94 | } |
95 | delete [] fZChannelTracklets; | |
44eafcf2 | 96 | // delete [] fTrackletsPostInput; |
97 | ||
98 | for (Int_t iLink = 0; iLink < fGtuParam->GetNLinks(); iLink++) { | |
99 | delete fTracklets[iLink]; | |
100 | } | |
52c19022 | 101 | delete [] fTracklets; |
102 | } | |
103 | ||
104 | Bool_t AliTRDgtuTMU::SetSector(Int_t sector) | |
105 | { | |
106 | // set the sector | |
107 | ||
108 | if (sector > -1 && sector < fGtuParam->GetGeo()->Nsector() ) { | |
5f006bd7 | 109 | fSector = sector; |
52c19022 | 110 | return kTRUE; |
111 | } | |
112 | ||
113 | AliError(Form("Invalid sector given: %i", sector)); | |
114 | return kFALSE; | |
115 | } | |
116 | ||
5f006bd7 | 117 | Bool_t AliTRDgtuTMU::SetStack(Int_t stack) |
52c19022 | 118 | { |
119 | // Set the stack (necessary for tracking) | |
120 | ||
121 | if (stack > -1 && stack < fGtuParam->GetGeo()->Nstack() ) { | |
122 | fStack = stack; | |
123 | return kTRUE; | |
124 | } | |
125 | ||
126 | AliError(Form("Invalid stack given: %i", stack)); | |
127 | return kFALSE; | |
128 | } | |
129 | ||
5f006bd7 | 130 | Bool_t AliTRDgtuTMU::Reset() |
52c19022 | 131 | { |
132 | // delete all tracks | |
133 | ||
134 | for (Int_t zch = 0; zch < fGtuParam->GetNZChannels(); zch++) { | |
135 | for (Int_t reflayeridx = 0; reflayeridx < fGtuParam->GetNRefLayers(); reflayeridx++) { | |
136 | fTracks[zch][reflayeridx].Clear(); | |
137 | } | |
138 | } | |
139 | ||
140 | // delete all added tracklets | |
44eafcf2 | 141 | for (Int_t iLink = 0; iLink < fGtuParam->GetNLinks(); iLink++) { |
142 | fTracklets[iLink]->Clear(); | |
143 | } | |
52c19022 | 144 | for (Int_t layer = 0; layer < fGtuParam->GetNLinks()/2; layer++) { |
44eafcf2 | 145 | fTrackletsPostInput[layer]->Clear(); |
52c19022 | 146 | for (Int_t zch = 0; zch < fGtuParam->GetNZChannels(); zch++) |
147 | fZChannelTracklets[layer][zch].Clear(); | |
52c19022 | 148 | } |
149 | ||
150 | fSector = -1; | |
151 | fStack = -1; | |
152 | ||
153 | return kTRUE; | |
154 | } | |
155 | ||
44eafcf2 | 156 | Bool_t AliTRDgtuTMU::AddTracklet(AliTRDtrackletGTU *tracklet, Int_t link) |
52c19022 | 157 | { |
158 | // add a tracklet on the given link | |
159 | ||
44eafcf2 | 160 | fTracklets[link]->Add(tracklet); |
52c19022 | 161 | return kTRUE; |
162 | } | |
163 | ||
164 | ||
5f006bd7 | 165 | Bool_t AliTRDgtuTMU::RunTMU(TList *ListOfTracks, AliESDEvent *esd) |
52c19022 | 166 | { |
167 | // performs the analysis as in a TMU module of the GTU, i. e. | |
168 | // track matching | |
169 | // calculation of track parameteres (pt, deflection, ???) | |
170 | ||
171 | if (fStack < 0 || fSector < 0) { | |
36dc3337 | 172 | AliError("No valid stack/sector set for this TMU! No tracking!"); |
52c19022 | 173 | return kFALSE; |
174 | } | |
175 | ||
176 | // ----- Input units ----- | |
c8b1590d | 177 | AliDebug(1,"--------- Running Input units ----------"); |
52c19022 | 178 | for (Int_t layer = 0; layer < fGtuParam->GetNLayers(); layer++) { |
179 | if (!RunInputUnit(layer)) { | |
180 | AliError(Form("Input unit in layer %i failed", layer)); | |
181 | return kFALSE; | |
182 | } | |
183 | } | |
184 | ||
185 | // ----- Z-channel units ----- | |
c8b1590d | 186 | AliDebug(1,"--------- Running Z-channel units ----------"); |
52c19022 | 187 | for (Int_t layer = 0; layer < fGtuParam->GetNLayers(); layer++) { |
188 | fZChannelTracklets[layer] = new TList[fGtuParam->GetNZChannels()]; | |
189 | if (!RunZChannelUnit(layer)) { | |
190 | AliError(Form("Z-Channel unit in layer %i failed", layer)); | |
191 | return kFALSE; | |
192 | } | |
193 | } | |
194 | ||
195 | // ----- track finding ----- | |
c8b1590d | 196 | AliDebug(1,"--------- Running tracking units ----------"); |
52c19022 | 197 | for (Int_t zch = 0; zch < fGtuParam->GetNZChannels(); zch++) { |
52c19022 | 198 | if (!RunTrackFinder(zch, ListOfTracks)) { |
199 | AliError(Form("Track Finder in z-channel %i failed", zch)); | |
200 | return kFALSE; | |
201 | } | |
5f006bd7 | 202 | } |
52c19022 | 203 | |
204 | // ----- Track Merging ----- | |
205 | if (!RunTrackMerging(ListOfTracks)) { | |
206 | AliError("Track merging failed"); | |
207 | return kFALSE; | |
208 | } | |
209 | ||
210 | // ----- track reconstruction ----- | |
211 | if (!RunTrackReconstruction(ListOfTracks)) { | |
212 | AliError("Track reconstruction failed"); | |
213 | return kFALSE; | |
214 | } | |
215 | ||
2f1bde31 | 216 | // ----- label calculation and ESD storage ----- |
217 | TIter next(ListOfTracks); | |
218 | while (AliTRDtrackGTU *trk = (AliTRDtrackGTU*) next()) { | |
219 | trk->CookLabel(); | |
220 | if (esd) { | |
221 | AliESDTrdTrack *trdtrack = trk->CreateTrdTrack(); | |
222 | esd->AddTrdTrack(trdtrack); | |
223 | delete trdtrack; | |
224 | } | |
52c19022 | 225 | } |
226 | ||
227 | return kTRUE; | |
228 | } | |
229 | ||
5f006bd7 | 230 | Bool_t AliTRDgtuTMU::RunInputUnit(Int_t layer) |
52c19022 | 231 | { |
232 | // precalculations for the tracking and reconstruction | |
233 | ||
44eafcf2 | 234 | Int_t iTrkl0 = 0; // A-side tracklet |
235 | Int_t iTrkl1 = 0; // B-side tracklet | |
236 | ||
237 | while ((iTrkl0 < fTracklets[2*layer + 0]->GetEntriesFast()) || (iTrkl1 < fTracklets[2*layer + 1]->GetEntriesFast())) { | |
238 | if (iTrkl1 >= fTracklets[2*layer + 1]->GetEntriesFast()) { | |
239 | fTrackletsPostInput[layer]->AddLast(fTracklets[2*layer + 0]->At(iTrkl0)); | |
240 | iTrkl0++; | |
241 | } | |
242 | else { | |
243 | if (iTrkl0 >= fTracklets[2*layer + 0]->GetEntriesFast()) { | |
244 | fTrackletsPostInput[layer]->AddLast(fTracklets[2*layer + 1]->At(iTrkl1)); | |
245 | iTrkl1++; | |
246 | } | |
247 | else { | |
248 | if (((AliTRDtrackletGTU*) fTracklets[2*layer + 1]->At(iTrkl1))->GetZbin() < | |
249 | ((AliTRDtrackletGTU*) fTracklets[2*layer + 0]->At(iTrkl0))->GetZbin()) { | |
250 | fTrackletsPostInput[layer]->AddLast(fTracklets[2*layer + 1]->At(iTrkl1)); | |
251 | iTrkl1++; | |
252 | ||
253 | } | |
254 | else { | |
255 | fTrackletsPostInput[layer]->AddLast(fTracklets[2*layer + 0]->At(iTrkl0)); | |
256 | iTrkl0++; | |
257 | } | |
258 | } | |
259 | } | |
260 | } | |
261 | ||
262 | TIter next(fTrackletsPostInput[layer]); | |
52c19022 | 263 | |
264 | while ( AliTRDtrackletGTU *trk = (AliTRDtrackletGTU*) next() ) { | |
44eafcf2 | 265 | trk->SetIndex(fTrackletsPostInput[layer]->IndexOf(trk)); |
52c19022 | 266 | |
5f006bd7 | 267 | Int_t alpha = (trk->GetYbin() >> fGtuParam->GetBitExcessY()) * fGtuParam->GetCiAlpha(layer); |
52c19022 | 268 | alpha = ( 2 * trk->GetdY() - (alpha >> fGtuParam->GetBitExcessAlpha()) + 1 ) >> 1; |
a10c6981 | 269 | // wrapping projected alpha as in hardware |
270 | if ((alpha < -64) || (alpha > 63)) | |
bec8ed9c | 271 | AliDebug(1, Form("alpha out of range: %i", alpha)); |
a10c6981 | 272 | alpha = alpha & 0x7f; |
273 | if (alpha & 0x40) | |
274 | trk->SetAlpha(0xffffffc0 | alpha); | |
275 | else | |
276 | trk->SetAlpha(alpha); | |
52c19022 | 277 | |
ec5db61b | 278 | Int_t yproj = trk->GetdY() * (fGtuParam->GetCiYProj(layer)); |
52c19022 | 279 | yproj = ( ( ( (yproj >> fGtuParam->GetBitExcessYProj()) + trk->GetYbin() ) >> 2) + 1) >> 1; |
280 | trk->SetYProj(yproj); | |
281 | ||
282 | trk->SetYPrime(trk->GetYbin() + fGtuParam->GetYt(fStack, layer, trk->GetZbin())); | |
283 | ||
ec5db61b | 284 | AliDebug(10, Form("0x%08x: idx: %3i, z: %2i, y: %5i, dy: %3i, y': %5i, y_proj: %5i, alpha: %3i, pid: %3i, c: %5i, yt: %5i", |
44eafcf2 | 285 | trk->GetTrackletWord(), trk->GetIndex(), trk->GetZbin(), trk->GetYbin(), trk->GetdY(), trk->GetYPrime(), |
ec5db61b | 286 | trk->GetYProj(), trk->GetAlpha(), trk->GetPID(), |
287 | fGtuParam->GetCiYProj(layer), fGtuParam->GetYt(fStack, layer, trk->GetZbin()) )); | |
52c19022 | 288 | } |
289 | return kTRUE; | |
290 | } | |
291 | ||
5f006bd7 | 292 | Bool_t AliTRDgtuTMU::RunZChannelUnit(Int_t layer) |
52c19022 | 293 | { |
294 | // run the z-channel unit | |
295 | ||
44eafcf2 | 296 | TIter next(fTrackletsPostInput[layer]); |
52c19022 | 297 | |
298 | while (AliTRDtrackletGTU *trk = (AliTRDtrackletGTU*) next()) { | |
52c19022 | 299 | for (Int_t zch = 0; zch < fGtuParam->GetNZChannels(); zch++) { |
300 | if (fGtuParam->IsInZChannel(fStack, layer, zch, trk->GetZbin()) ) { | |
301 | trk->SetSubChannel(zch, fGtuParam->GetZSubchannel(fStack, layer, zch, trk->GetZbin()) ); | |
52c19022 | 302 | |
303 | TIter nexttrkl(&fZChannelTracklets[layer][zch], kIterBackward); | |
304 | AliTRDtrackletGTU *t = 0x0; | |
4cc89512 | 305 | while ((t = (AliTRDtrackletGTU*) nexttrkl.Next())) { |
5f006bd7 | 306 | if (t->GetSubChannel(zch) < trk->GetSubChannel(zch) || |
44eafcf2 | 307 | ((t->GetSubChannel(zch) == trk->GetSubChannel(zch)) && (t->GetYProj() < trk->GetYProj())) ) { |
52c19022 | 308 | break; |
44eafcf2 | 309 | } |
52c19022 | 310 | } |
44eafcf2 | 311 | if (t) |
312 | fZChannelTracklets[layer][zch].AddAfter(t, trk); | |
313 | else | |
314 | fZChannelTracklets[layer][zch].AddFirst(trk); | |
52c19022 | 315 | } |
52c19022 | 316 | } |
44eafcf2 | 317 | AliDebug(10, Form("stack %d, layer %2d: 0x%08x Z(2..0)=%i/%i/%i", |
318 | fStack, layer, trk->GetTrackletWord(), | |
319 | fGtuParam->IsInZChannel(fStack, layer, 2, trk->GetZbin()) ? trk->GetSubChannel(2) : -1, | |
320 | fGtuParam->IsInZChannel(fStack, layer, 1, trk->GetZbin()) ? trk->GetSubChannel(1) : -1, | |
321 | fGtuParam->IsInZChannel(fStack, layer, 0, trk->GetZbin()) ? trk->GetSubChannel(0) : -1 | |
322 | )); | |
52c19022 | 323 | } |
324 | return kTRUE; | |
325 | } | |
326 | ||
5f006bd7 | 327 | Bool_t AliTRDgtuTMU::RunTrackFinder(Int_t zch, TList* /* ListOfTracks */) |
52c19022 | 328 | { |
329 | // run the track finding | |
330 | ||
331 | Int_t *notr = new Int_t[fGtuParam->GetNLayers()]; | |
332 | Int_t *ptrA = new Int_t[fGtuParam->GetNLayers()]; | |
333 | Int_t *ptrB = new Int_t[fGtuParam->GetNLayers()]; | |
334 | ||
5f006bd7 | 335 | Bool_t *bHitA = new Bool_t[fGtuParam->GetNLayers()]; |
52c19022 | 336 | Bool_t *bHitB = new Bool_t[fGtuParam->GetNLayers()]; |
337 | Bool_t *bAligned = new Bool_t[fGtuParam->GetNLayers()]; | |
338 | Bool_t *bAlignedA = new Bool_t[fGtuParam->GetNLayers()]; | |
339 | Bool_t *bAlignedB = new Bool_t[fGtuParam->GetNLayers()]; | |
340 | Bool_t *bDone = new Bool_t[fGtuParam->GetNLayers()]; | |
341 | Bool_t ready; | |
342 | ||
343 | Int_t *inc = new Int_t[fGtuParam->GetNLayers()]; | |
344 | Int_t *incprime = new Int_t[fGtuParam->GetNLayers()]; | |
345 | ||
346 | // ----- signals within current layer ----- | |
36dc3337 | 347 | Int_t yPlus; |
5f006bd7 | 348 | Int_t yMinus; |
349 | Int_t ybPlus; | |
36dc3337 | 350 | Int_t ybMinus; |
351 | Int_t alphaPlus; | |
5f006bd7 | 352 | Int_t alphaMinus; |
36dc3337 | 353 | Int_t nHits; |
5f006bd7 | 354 | Int_t nUnc; |
36dc3337 | 355 | Int_t nWayBeyond; |
52c19022 | 356 | |
357 | AliTRDtrackletGTU *trkRA = 0x0; // reference tracklet A | |
358 | AliTRDtrackletGTU *trkRB = 0x0; // reference tracklet B | |
359 | AliTRDtrackletGTU *trkA = 0x0; // tracklet A in current layer | |
360 | AliTRDtrackletGTU *trkB = 0x0; // tracklet B in current layer | |
361 | /* | |
362 | AliTRDtrackletGTU *trkEnd = new AliTRDtrackletGTU(); | |
5f006bd7 | 363 | for (Int_t i = 0; i < fGtuParam->GetNZChannels(); i++) |
52c19022 | 364 | trkEnd->SetSubChannel(i, 7); |
365 | trkEnd->SetYProj(0); | |
366 | trkEnd->SetAlpha(0); | |
367 | */ | |
368 | ||
369 | for (Int_t refLayerIdx = 0; refLayerIdx < fGtuParam->GetNRefLayers(); refLayerIdx++) { | |
370 | Int_t reflayer = fGtuParam->GetRefLayer(refLayerIdx); | |
d2c8b010 | 371 | AliDebug(5,Form("Tracking for z-channel: %i, reflayer: %i", zch, reflayer)); |
52c19022 | 372 | |
373 | ready = kFALSE; // ready if all channels done | |
374 | ||
44eafcf2 | 375 | // for (Int_t iLayer = 0; iLayer < fGtuParam->GetNLayers(); iLayer++) { |
376 | // for (Int_t iTrkl = 0; iTrkl < fZChannelTracklets[iLayer][zch].GetEntries(); iTrkl++) { | |
377 | // printf("%4i/%4i(%i,%i) ", | |
378 | // ((AliTRDtrackletGTU*) fZChannelTracklets[iLayer][zch].At(iTrkl))->GetYProj(), | |
379 | // ((AliTRDtrackletGTU*) fZChannelTracklets[iLayer][zch].At(iTrkl))->GetAlpha(), | |
380 | // ((AliTRDtrackletGTU*) fZChannelTracklets[iLayer][zch].At(iTrkl))->GetIndex(), | |
381 | // ((AliTRDtrackletGTU*) fZChannelTracklets[iLayer][zch].At(iTrkl))->GetSubChannel(zch) | |
382 | // ); | |
383 | // } | |
384 | // printf("\n"); | |
385 | // } | |
386 | ||
52c19022 | 387 | for (Int_t layer = 0; layer < fGtuParam->GetNLayers(); layer++) { |
388 | notr[layer] = fZChannelTracklets[layer][zch].GetEntries(); | |
389 | ptrA[layer] = 0; // notr[layer] > 0 ? 0 : -1; | |
390 | ptrB[layer] = 1; // notr[layer] > 1 ? 1 : -1; | |
391 | ||
392 | // not necessary here | |
393 | // bDone[layer] = (ptrB[layer] >= notr[layer] - 1); // trkB is last one | |
394 | // bDone[layer] = (notr[layer] <= 0); | |
395 | // ready = ready && bDone[layer]; | |
396 | ||
397 | if (reflayer == 1) | |
c8b1590d | 398 | AliDebug(5,Form("in layer: %i (zchannel = %i) there are: %i tracklets", layer, zch, notr[layer])); |
52c19022 | 399 | } |
5f006bd7 | 400 | |
401 | if (ptrA[reflayer] < 0 && ptrB[reflayer] < 0) | |
52c19022 | 402 | continue; |
403 | ||
404 | while (!ready) { | |
405 | // ----- reference tracklets ----- | |
406 | trkRA = 0x0; | |
407 | trkRB = 0x0; | |
408 | if (0 <= ptrA[reflayer] && ptrA[reflayer] < notr[reflayer]) | |
409 | trkRA = (AliTRDtrackletGTU*) fZChannelTracklets[reflayer][zch].At(ptrA[reflayer]); | |
410 | else { | |
a8518fd2 | 411 | AliDebug(10,Form("No valid tracklet in the reference at ptr: %i! Nothing done!", ptrA[reflayer])); |
5f006bd7 | 412 | break; |
52c19022 | 413 | } |
414 | ||
415 | if (0 <= ptrB[reflayer] && ptrB[reflayer] < notr[reflayer]) | |
416 | trkRB = (AliTRDtrackletGTU*) fZChannelTracklets[reflayer][zch].At(ptrB[reflayer]); | |
417 | ||
36dc3337 | 418 | yPlus = trkRA->GetYProj() + fGtuParam->GetDeltaY(); |
419 | yMinus = trkRA->GetYProj() - fGtuParam->GetDeltaY(); | |
420 | alphaPlus = trkRA->GetAlpha() + fGtuParam->GetDeltaAlpha(); | |
421 | alphaMinus = trkRA->GetAlpha() - fGtuParam->GetDeltaAlpha(); | |
52c19022 | 422 | if (trkRB) { |
36dc3337 | 423 | ybPlus = trkRB->GetYProj() + fGtuParam->GetDeltaY(); |
424 | ybMinus = trkRB->GetYProj() - fGtuParam->GetDeltaY(); | |
52c19022 | 425 | } |
426 | else { // irrelevant (should be, is it?) | |
36dc3337 | 427 | ybPlus = trkRA->GetYProj() + fGtuParam->GetDeltaY(); |
428 | ybMinus = trkRA->GetYProj() - fGtuParam->GetDeltaY(); | |
52c19022 | 429 | } |
430 | ||
36dc3337 | 431 | nHits = 0; |
432 | nUnc = 0; | |
433 | nWayBeyond = 0; | |
5f006bd7 | 434 | |
52c19022 | 435 | for (Int_t layer = 0; layer < fGtuParam->GetNLayers(); layer++) { |
436 | bHitA[layer] = bHitB[layer] = bAligned[layer] = kFALSE; | |
437 | inc[layer] = incprime[layer] = 0; | |
438 | ||
439 | if (layer == reflayer) { | |
440 | bHitA[layer] = kTRUE; | |
441 | bAligned[layer] = kTRUE; | |
36dc3337 | 442 | nHits++; |
5f006bd7 | 443 | continue; |
52c19022 | 444 | } |
445 | ||
446 | trkA = 0x0; | |
447 | trkB = 0x0; | |
448 | if (0 <= ptrA[layer] && ptrA[layer] < notr[layer]) | |
449 | trkA = (AliTRDtrackletGTU*) fZChannelTracklets[layer][zch].At(ptrA[layer]); | |
450 | if (0 <= ptrB[layer] && ptrB[layer] < notr[layer]) | |
451 | trkB = (AliTRDtrackletGTU*) fZChannelTracklets[layer][zch].At(ptrB[layer]); | |
452 | ||
453 | bAlignedA[layer] = kFALSE; | |
454 | bAlignedB[layer] = kFALSE; | |
455 | ||
5f006bd7 | 456 | if (trkA) { |
36dc3337 | 457 | bHitA[layer] = ( !(trkA->GetSubChannel(zch) < trkRA->GetSubChannel(zch) || (trkA->GetSubChannel(zch) == trkRA->GetSubChannel(zch) && trkA->GetYProj() < yMinus) ) && |
458 | !(trkA->GetSubChannel(zch) > trkRA->GetSubChannel(zch) || (trkA->GetSubChannel(zch) == trkRA->GetSubChannel(zch) && trkA->GetYProj() > yPlus) ) && | |
459 | !(trkA->GetAlpha() < alphaMinus) && | |
460 | !(trkA->GetAlpha() > alphaPlus) ); | |
5f006bd7 | 461 | bAlignedA[layer] = !(trkA->GetSubChannel(zch) < trkRA->GetSubChannel(zch) || (trkA->GetSubChannel(zch) == trkRA->GetSubChannel(zch) && trkA->GetYProj() < yMinus) ); |
52c19022 | 462 | } |
463 | else { | |
464 | bHitA[layer] = 0; | |
465 | bAlignedA[layer] = kTRUE; | |
466 | } | |
467 | ||
468 | if (trkB) { | |
36dc3337 | 469 | bHitB[layer] = ( !(trkB->GetSubChannel(zch) < trkRA->GetSubChannel(zch) || (trkB->GetSubChannel(zch) == trkRA->GetSubChannel(zch) && trkB->GetYProj() < yMinus) ) && |
470 | !(trkB->GetSubChannel(zch) > trkRA->GetSubChannel(zch) || (trkB->GetSubChannel(zch) == trkRA->GetSubChannel(zch) && trkB->GetYProj() > yPlus) ) && | |
44eafcf2 | 471 | !(trkB->GetAlpha() < alphaMinus) && |
472 | !(trkB->GetAlpha() > alphaPlus) ); | |
36dc3337 | 473 | bAlignedB[layer] = (trkB->GetSubChannel(zch) > trkRA->GetSubChannel(zch) || (trkB->GetSubChannel(zch) == trkRA->GetSubChannel(zch) && trkB->GetYProj() > yPlus) ); |
5f006bd7 | 474 | } |
52c19022 | 475 | else { |
476 | bHitB[layer] = 0; | |
477 | bAlignedB[layer] = kTRUE; | |
478 | } | |
5f006bd7 | 479 | |
52c19022 | 480 | bAligned[layer] = bAlignedA[layer] || bAlignedB[layer]; //??? |
481 | // bAligned[layer] = bAlignedA[layer]; //??? | |
5f006bd7 | 482 | |
52c19022 | 483 | if (bAligned[layer] && (bHitA[layer] || bHitB[layer]) ) |
36dc3337 | 484 | nHits++; |
52c19022 | 485 | else if (!bAligned[layer] ) |
36dc3337 | 486 | nUnc++; |
52c19022 | 487 | if (trkRB) { |
488 | if (trkA) { | |
36dc3337 | 489 | if ((trkA->GetSubChannel(zch) > trkRB->GetSubChannel(zch)) || (trkA->GetSubChannel(zch) == trkRB->GetSubChannel(zch) && trkA->GetYProj() > ybPlus) ) |
490 | nWayBeyond++; | |
52c19022 | 491 | } |
5f006bd7 | 492 | else |
36dc3337 | 493 | nWayBeyond++; |
52c19022 | 494 | } |
495 | ||
496 | // pre-calculation for the layer shifting (alignment w. r. t. trkRB) | |
497 | if (trkA) { | |
498 | if(trkRB) { | |
36dc3337 | 499 | if ((trkA->GetSubChannel(zch) < trkRB->GetSubChannel(zch)) || (trkA->GetSubChannel(zch) == trkRB->GetSubChannel(zch) && trkA->GetYProj() < ybMinus )) // could trkA be aligned for trkRB |
52c19022 | 500 | incprime[layer] = 1; |
5f006bd7 | 501 | else |
52c19022 | 502 | incprime[layer] = 0; |
503 | } | |
5f006bd7 | 504 | else |
52c19022 | 505 | incprime[layer] = 1; |
506 | ||
5f006bd7 | 507 | if (trkB) { |
52c19022 | 508 | if (trkRB) { |
36dc3337 | 509 | if ((trkB->GetSubChannel(zch) < trkRB->GetSubChannel(zch)) || (trkB->GetSubChannel(zch) == trkRB->GetSubChannel(zch) && trkB->GetYProj() < ybMinus )) // could trkB be aligned for trkRB |
52c19022 | 510 | incprime[layer] = 2; |
511 | } | |
5f006bd7 | 512 | else |
52c19022 | 513 | incprime[layer] = 2; |
514 | } | |
515 | } | |
516 | } // end of loop over layers | |
517 | ||
d2c8b010 | 518 | AliDebug(5,Form("logic calculation finished, Nhits: %i %s", |
519 | nHits, (nHits >= 4) ? "-> track found" : "")); | |
52c19022 | 520 | |
36dc3337 | 521 | if (nHits >= 4) { |
52c19022 | 522 | // ----- track registration ----- |
52c19022 | 523 | AliTRDtrackGTU *track = new AliTRDtrackGTU(); |
524 | track->SetSector(fSector); | |
525 | track->SetStack(fStack); | |
526 | for (Int_t layer = 0; layer < fGtuParam->GetNLayers(); layer++ ) { | |
5f006bd7 | 527 | if (bHitA[layer] || layer == reflayer) |
52c19022 | 528 | track->AddTracklet((AliTRDtrackletGTU* ) fZChannelTracklets[layer][zch].At(ptrA[layer]), layer ); |
5f006bd7 | 529 | else if (bHitB[layer]) |
52c19022 | 530 | track->AddTracklet((AliTRDtrackletGTU* ) fZChannelTracklets[layer][zch].At(ptrB[layer]), layer ); |
531 | } | |
532 | ||
533 | Bool_t registerTrack = kTRUE; | |
44eafcf2 | 534 | for (Int_t layerIdx = refLayerIdx-1; layerIdx >= 0; layerIdx--) { |
80f93426 | 535 | if (track->IsTrackletInLayer(fGtuParam->GetRefLayer(layerIdx))) { |
536 | if ((track->GetTracklet(fGtuParam->GetRefLayer(layerIdx)))->GetSubChannel(zch) > 0) { | |
c8b1590d | 537 | AliDebug(1,"Not registered"); |
52c19022 | 538 | registerTrack = kFALSE; |
80f93426 | 539 | } |
540 | } | |
52c19022 | 541 | } |
542 | if (registerTrack) { | |
543 | track->SetZChannel(zch); | |
544 | track->SetRefLayerIdx(refLayerIdx); | |
545 | fTracks[zch][refLayerIdx].Add(track); | |
546 | } | |
547 | } | |
5f006bd7 | 548 | |
36dc3337 | 549 | if ( (nUnc != 0) && (nUnc + nHits >= 4) ) // could this position of the reference layer give some track //??? special check in case of hit? |
52c19022 | 550 | inc[reflayer] = 0; |
36dc3337 | 551 | else if (nWayBeyond > 2) // no track possible for both reference tracklets |
52c19022 | 552 | inc[reflayer] = 2; |
5f006bd7 | 553 | else |
52c19022 | 554 | inc[reflayer] = 1; |
5f006bd7 | 555 | |
52c19022 | 556 | if (inc[reflayer] != 0) // reflayer is shifted |
557 | for (Int_t layer = 0; layer < fGtuParam->GetNLayers(); layer++) { | |
558 | if (layer == reflayer) | |
559 | continue; | |
5f006bd7 | 560 | inc[layer] = incprime[layer]; |
52c19022 | 561 | } |
562 | else { // reflayer is not shifted | |
563 | for (Int_t layer = 0; layer < fGtuParam->GetNLayers(); layer++) { | |
564 | if (layer == reflayer || notr[layer] == 0) | |
565 | continue; | |
566 | inc[layer] = 0; | |
567 | trkA = 0x0; | |
568 | trkB = 0x0; | |
569 | if (0 <= ptrA[layer] && ptrA[layer] < notr[layer]) | |
570 | trkA = (AliTRDtrackletGTU*) fZChannelTracklets[layer][zch].At(ptrA[layer]); | |
571 | ||
572 | if (0 <= ptrB[layer] && ptrB[layer] < notr[layer]) | |
573 | trkB = (AliTRDtrackletGTU*) fZChannelTracklets[layer][zch].At(ptrB[layer]); | |
574 | ||
575 | if (trkA) { | |
44eafcf2 | 576 | if ( !(trkA->GetSubChannel(zch) < trkRA->GetSubChannel(zch) || (trkA->GetSubChannel(zch) == trkRA->GetSubChannel(zch) && trkA->GetYProj() < yMinus) ) && |
577 | !(trkA->GetSubChannel(zch) > trkRA->GetSubChannel(zch) || (trkA->GetSubChannel(zch) == trkRA->GetSubChannel(zch) && trkA->GetYProj() > yPlus ) ) ) // trkA could hit trkRA | |
578 | // if ( !(trkA->GetSubChannel(zch) < trkRA->GetSubChannel(zch) || (trkA->GetSubChannel(zch) == trkRA->GetSubChannel(zch) && trkA->GetYProj() < yMinus) ) ) | |
52c19022 | 579 | inc[layer] = 0; |
580 | else if (trkB) { | |
36dc3337 | 581 | if ( trkB->GetSubChannel(zch) < trkRA->GetSubChannel(zch) || (trkB->GetSubChannel(zch) == trkRA->GetSubChannel(zch) && trkB->GetYProj() < yMinus) ) |
52c19022 | 582 | inc[layer] = 2; |
36dc3337 | 583 | else if ( !(trkB->GetSubChannel(zch) > trkRA->GetSubChannel(zch) || (trkB->GetSubChannel(zch) == trkRA->GetSubChannel(zch) && trkB->GetYProj() > yPlus) ) ) |
52c19022 | 584 | inc[layer] = 1; |
5f006bd7 | 585 | else |
52c19022 | 586 | inc[layer] = incprime[layer]; |
587 | } | |
5f006bd7 | 588 | else |
52c19022 | 589 | inc[layer] = incprime[layer]; |
590 | } | |
591 | } | |
592 | } | |
5f006bd7 | 593 | |
52c19022 | 594 | ready = kTRUE; |
d2c8b010 | 595 | for (Int_t layer = fGtuParam->GetNLayers()-1; layer >= 0; layer--) { |
52c19022 | 596 | |
597 | bDone[layer] = ptrB[layer] < 0 || ptrB[layer] >= notr[layer]; | |
598 | ready = ready && bDone[layer]; | |
599 | ||
600 | if (inc[layer] != 0 && ptrA[layer] >= notr[layer]) | |
601 | AliError(Form("Invalid increment: %i at ptrA: %i, notr: %i", inc[layer], ptrA[layer], notr[layer])); | |
602 | ||
603 | // AliInfo(Form("Shifting layer: %i, notr: %i, ptrA: %i, ptrB: %i, inc: %i", layer, notr[layer], ptrA[layer], ptrB[layer], inc[layer])); | |
d2c8b010 | 604 | AliDebug(10,Form(" Layer: %i %2i(%2i, %2i, %4i, %3i)%s%s %2i(%2i, %2i, %4i, %3i)%s%s +%i %s (no: %i)", |
44eafcf2 | 605 | layer, |
606 | ptrA[layer], | |
607 | (0 <= ptrA[layer] && ptrA[layer] < notr[layer]) ? ((AliTRDtrackletGTU*) fZChannelTracklets[layer][zch].At(ptrA[layer]))->GetIndex() : -1, | |
d2c8b010 | 608 | (0 <= ptrA[layer] && ptrA[layer] < notr[layer]) ? ((AliTRDtrackletGTU*) fZChannelTracklets[layer][zch].At(ptrA[layer]))->GetSubChannel(zch) : -1, |
609 | (0 <= ptrA[layer] && ptrA[layer] < notr[layer]) ? ((AliTRDtrackletGTU*) fZChannelTracklets[layer][zch].At(ptrA[layer]))->GetYProj() : -1, | |
610 | (0 <= ptrA[layer] && ptrA[layer] < notr[layer]) ? ((AliTRDtrackletGTU*) fZChannelTracklets[layer][zch].At(ptrA[layer]))->GetAlpha() : -1, | |
44eafcf2 | 611 | bHitA[layer] ? "*" : " ", bAlignedA[layer] ? "+" : " ", |
612 | ptrB[layer], | |
613 | (0 <= ptrB[layer] && ptrB[layer] < notr[layer]) ? ((AliTRDtrackletGTU*) fZChannelTracklets[layer][zch].At(ptrB[layer]))->GetIndex() : -1, | |
d2c8b010 | 614 | (0 <= ptrB[layer] && ptrB[layer] < notr[layer]) ? ((AliTRDtrackletGTU*) fZChannelTracklets[layer][zch].At(ptrB[layer]))->GetSubChannel(zch) : -1, |
615 | (0 <= ptrB[layer] && ptrB[layer] < notr[layer]) ? ((AliTRDtrackletGTU*) fZChannelTracklets[layer][zch].At(ptrB[layer]))->GetYProj() : -1, | |
616 | (0 <= ptrB[layer] && ptrB[layer] < notr[layer]) ? ((AliTRDtrackletGTU*) fZChannelTracklets[layer][zch].At(ptrB[layer]))->GetAlpha() : -1, | |
44eafcf2 | 617 | bHitB[layer] ? "*" : " ", bAlignedB[layer] ? "+" : " ", |
618 | inc[layer], bDone[layer] ? "done" : " ", notr[layer])); | |
52c19022 | 619 | ptrA[layer] += inc[layer]; |
620 | ptrB[layer] += inc[layer]; | |
621 | } | |
622 | ||
623 | } // end of while | |
624 | } // end of loop over reflayer | |
625 | ||
626 | delete [] bHitA; | |
627 | delete [] bHitB; | |
628 | delete [] bAligned; | |
629 | delete [] bDone; | |
630 | delete [] inc; | |
631 | delete [] incprime; | |
632 | delete [] bAlignedA; | |
633 | delete [] bAlignedB; | |
634 | delete [] notr; | |
635 | delete [] ptrA; | |
636 | delete [] ptrB; | |
637 | ||
638 | return kTRUE; | |
639 | } | |
640 | ||
5f006bd7 | 641 | Bool_t AliTRDgtuTMU::RunTrackMerging(TList* ListOfTracks) |
52c19022 | 642 | { |
643 | TList **tracksRefMerged = new TList*[fGtuParam->GetNZChannels()]; | |
644 | TList **tracksRefUnique = new TList*[fGtuParam->GetNZChannels()]; | |
645 | ||
646 | for (Int_t zch = 0; zch < fGtuParam->GetNZChannels(); zch++) { | |
647 | tracksRefMerged[zch] = new TList; | |
648 | tracksRefUnique[zch] = new TList; | |
649 | } | |
650 | ||
651 | TList *tracksZMergedStage0 = new TList; | |
652 | TList *tracksZUniqueStage0 = new TList; | |
653 | ||
654 | TList **tracksZSplitted = new TList*[2]; | |
655 | for (Int_t i = 0; i < 2; i++) | |
656 | tracksZSplitted[i] = new TList; | |
657 | ||
658 | TList *tracksZMergedStage1 = new TList; | |
659 | ||
4cc89512 | 660 | AliTRDtrackGTU **trkInRefLayer = new AliTRDtrackGTU*[fGtuParam->GetNRefLayers()]; |
52c19022 | 661 | |
c2aad3ae | 662 | // Bool_t done = kFALSE; |
52c19022 | 663 | Int_t minIdx = 0; |
664 | AliTRDtrackGTU *trkStage0 = 0x0; | |
665 | ||
666 | for (Int_t zch = 0; zch < fGtuParam->GetNZChannels(); zch++) { | |
44eafcf2 | 667 | // ----- Merging and Unification in Reflayers (seed_merger) ----- |
52c19022 | 668 | do { |
c2aad3ae | 669 | // done = kTRUE; |
52c19022 | 670 | trkStage0 = 0x0; |
671 | for (Int_t refLayerIdx = 0; refLayerIdx < fGtuParam->GetNRefLayers(); refLayerIdx++) { | |
4cc89512 | 672 | trkInRefLayer[refLayerIdx] = (AliTRDtrackGTU*) fTracks[zch][refLayerIdx].First(); |
673 | if (trkInRefLayer[refLayerIdx] == 0) { | |
52c19022 | 674 | continue; |
675 | } | |
676 | else if (trkStage0 == 0x0 ) { | |
4cc89512 | 677 | trkStage0 = trkInRefLayer[refLayerIdx]; |
52c19022 | 678 | minIdx = refLayerIdx; |
c2aad3ae | 679 | // done = kFALSE; |
52c19022 | 680 | } |
ec5db61b | 681 | else if ( (trkInRefLayer[refLayerIdx]->GetZSubChannel() < trkStage0->GetZSubChannel()) || |
682 | ((trkInRefLayer[refLayerIdx]->GetZSubChannel() == trkStage0->GetZSubChannel()) && | |
683 | ((trkInRefLayer[refLayerIdx]->GetYapprox() >> 3) < (trkStage0->GetYapprox() >> 3)) ) ) { | |
52c19022 | 684 | minIdx = refLayerIdx; |
4cc89512 | 685 | trkStage0 = trkInRefLayer[refLayerIdx]; |
c2aad3ae | 686 | // done = kFALSE; |
52c19022 | 687 | } |
688 | } | |
c8b1590d | 689 | if (!trkStage0) |
690 | break; | |
52c19022 | 691 | tracksRefMerged[zch]->Add(trkStage0); |
692 | fTracks[zch][minIdx].RemoveFirst(); | |
693 | } while (trkStage0 != 0); | |
694 | ||
695 | Uniquifier(tracksRefMerged[zch], tracksRefUnique[zch]); | |
44eafcf2 | 696 | |
697 | AliDebug(2, Form("zchannel %i", zch)); | |
698 | TIter trackRefMerged(tracksRefMerged[zch]); | |
699 | while (AliTRDtrackGTU *trk = (AliTRDtrackGTU*) trackRefMerged()) | |
700 | AliDebug(2, Form("track ref layer %i : %i %i %i %i %i %i, y=%i, z_idx=%i", | |
d2c8b010 | 701 | AliTRDgtuParam::GetRefLayer(trk->GetRefLayerIdx()), |
44eafcf2 | 702 | trk->GetTrackletIndex(5), |
703 | trk->GetTrackletIndex(4), | |
704 | trk->GetTrackletIndex(3), | |
705 | trk->GetTrackletIndex(2), | |
706 | trk->GetTrackletIndex(1), | |
707 | trk->GetTrackletIndex(0), | |
708 | trk->GetYapprox() >> 3, | |
709 | trk->GetZSubChannel())); | |
710 | AliDebug(2, "uniquified:"); | |
711 | TIter trackRefUnique(tracksRefUnique[zch]); | |
712 | while (AliTRDtrackGTU *trk = (AliTRDtrackGTU*) trackRefUnique()) | |
713 | AliDebug(2, Form("track ref layer %i : %i %i %i %i %i %i, y=%i, z_idx=%i", | |
d2c8b010 | 714 | AliTRDgtuParam::GetRefLayer(trk->GetRefLayerIdx()), |
44eafcf2 | 715 | trk->GetTrackletIndex(5), |
716 | trk->GetTrackletIndex(4), | |
717 | trk->GetTrackletIndex(3), | |
718 | trk->GetTrackletIndex(2), | |
719 | trk->GetTrackletIndex(1), | |
720 | trk->GetTrackletIndex(0), | |
721 | trk->GetYapprox() >> 3, | |
722 | trk->GetZSubChannel())); | |
52c19022 | 723 | } |
724 | ||
725 | // ----- Merging in zchannels - 1st stage ----- | |
5f006bd7 | 726 | |
ec5db61b | 727 | if (AliTRDgtuParam::GetUseGTUmerge()) { |
728 | Int_t notEmpty; | |
729 | do { | |
730 | Bool_t lowerThan[3] = { kFALSE, kFALSE, kFALSE }; | |
731 | AliTRDtrackGTU *trk[3] = { 0x0, 0x0, 0x0 }; | |
732 | for (Int_t iChannel = 0; iChannel < fGtuParam->GetNZChannels(); ++iChannel) | |
733 | trk[iChannel] = (AliTRDtrackGTU*) tracksRefUnique[iChannel]->First(); | |
734 | ||
735 | for (Int_t iChannel = 0; iChannel < fGtuParam->GetNZChannels(); ++iChannel) { | |
736 | AliTRDtrackGTU *trk1 = trk[iChannel]; | |
737 | AliTRDtrackGTU *trk2 = trk[(iChannel + 1) % 3]; | |
738 | if (trk1 && trk2) { | |
739 | Int_t sortnum1 = (trk1->GetZChannel() + 3 * trk1->GetZSubChannel()) / 2 - 1; | |
740 | Int_t sortnum2 = (trk2->GetZChannel() + 3 * trk2->GetZSubChannel()) / 2 - 1; | |
741 | AliDebug(5, Form("comparing tracks %i - %i: %i - %i", | |
742 | trk1->GetZChannel(), trk2->GetZChannel(), | |
743 | sortnum1, sortnum2)); | |
744 | if ( (sortnum1 < sortnum2) || | |
745 | ((sortnum1 == sortnum2) && | |
746 | ((trk1->GetYapprox() >> 3) < (trk2->GetYapprox() >> 3)) ) ) { | |
747 | lowerThan[iChannel] = kTRUE; | |
52c19022 | 748 | } |
ec5db61b | 749 | } |
750 | } | |
751 | ||
752 | notEmpty = (trk[2] ? (1 << 2) : 0) | | |
753 | (trk[1] ? (1 << 1) : 0) | | |
754 | (trk[0] ? (1 << 0) : 0); | |
755 | Int_t pop = -1; | |
756 | ||
757 | switch (notEmpty) { | |
758 | // one track only | |
759 | case 0x1: | |
760 | pop = 0; | |
761 | break; | |
762 | case 0x2: | |
763 | pop = 1; | |
764 | break; | |
765 | case 0x4: | |
766 | pop = 2; | |
767 | break; | |
768 | ||
769 | // two tracks | |
770 | case 0x3: | |
771 | if (lowerThan[0]) | |
772 | pop = 0; | |
773 | else | |
774 | pop = 1; | |
775 | break; | |
776 | case 0x5: | |
777 | if (lowerThan[2]) | |
778 | pop = 2; | |
779 | else | |
780 | pop = 0; | |
781 | break; | |
782 | case 0x6: | |
783 | if (lowerThan[1]) | |
784 | pop = 1; | |
785 | else | |
786 | pop = 2; | |
787 | break; | |
788 | ||
789 | // three tracks | |
790 | case 0x7: | |
791 | if (lowerThan[0]) { | |
792 | if (lowerThan[2]) | |
793 | pop = 2; | |
794 | else | |
795 | pop = 0; | |
796 | } else { | |
797 | if (lowerThan[1]) | |
798 | pop = 1; | |
799 | else | |
800 | pop = 2; | |
801 | } | |
802 | break; | |
803 | ||
804 | // no tracks | |
805 | default: | |
806 | // nop | |
807 | ; | |
808 | } | |
809 | ||
810 | if (pop > -1) { | |
811 | tracksZMergedStage0->Add(trk[pop]); | |
812 | tracksRefUnique[pop]->RemoveFirst(); | |
813 | } | |
814 | } while (notEmpty); | |
815 | } | |
816 | else { | |
817 | // there is still a difference between this implementation and | |
818 | // the hardware algorithm, only for expert use | |
819 | ||
820 | do { | |
821 | // done = kTRUE; | |
822 | trkStage0 = 0x0; | |
823 | // compare tracks from all adjacent zchannels | |
824 | // (including comparison of channels 2 and 0) | |
825 | for (Int_t i = fGtuParam->GetNZChannels() - 1; i > -1; i--) { | |
826 | Int_t zch = i % 3; | |
827 | AliTRDtrackGTU *trk = (AliTRDtrackGTU*) tracksRefUnique[zch]->First(); | |
828 | if (trk == 0) { | |
829 | continue; | |
830 | } | |
831 | else if (trkStage0 == 0x0 ) { | |
832 | trkStage0 = trk; | |
833 | minIdx = zch; | |
834 | // done = kFALSE; | |
835 | } | |
836 | else { | |
837 | Int_t sortnum1 = (trk->GetZChannel() + 3 * trk->GetZSubChannel()) / 2 - 1; | |
838 | Int_t sortnum2 = (trkStage0->GetZChannel() + 3 * trkStage0->GetZSubChannel()) / 2 - 1; | |
839 | AliDebug(5, Form("comparing tracks %i - %i: %i - %i", | |
840 | trk->GetZChannel(), trkStage0->GetZChannel(), | |
841 | sortnum1, sortnum2)); | |
842 | if ( (sortnum1 < sortnum2) || | |
843 | ((sortnum1 == sortnum2) && | |
844 | ((trk->GetYapprox() >> 3) < (trkStage0->GetYapprox() >> 3)) ) ) { | |
845 | minIdx = zch; | |
846 | trkStage0 = trk; | |
847 | // done = kFALSE; | |
52c19022 | 848 | } |
ec5db61b | 849 | } |
52c19022 | 850 | } |
5f006bd7 | 851 | |
c8b1590d | 852 | if (!trkStage0) |
853 | break; | |
52c19022 | 854 | tracksZMergedStage0->Add(trkStage0); |
855 | tracksRefUnique[minIdx]->RemoveFirst(); | |
ec5db61b | 856 | } while (trkStage0 != 0); |
857 | } | |
5f006bd7 | 858 | |
52c19022 | 859 | Uniquifier(tracksZMergedStage0, tracksZUniqueStage0); |
5f006bd7 | 860 | |
d2c8b010 | 861 | AliDebug(2, "stage 0:"); |
862 | TIter trackZMergedStage0(tracksZMergedStage0); | |
863 | while (AliTRDtrackGTU *trk = (AliTRDtrackGTU*) trackZMergedStage0()) | |
864 | AliDebug(2, Form("track ref layer %i : %i %i %i %i %i %i, y=%i, zch=%i idx=%i", | |
865 | AliTRDgtuParam::GetRefLayer(trk->GetRefLayerIdx()), | |
866 | trk->GetTrackletIndex(5), | |
867 | trk->GetTrackletIndex(4), | |
868 | trk->GetTrackletIndex(3), | |
869 | trk->GetTrackletIndex(2), | |
870 | trk->GetTrackletIndex(1), | |
871 | trk->GetTrackletIndex(0), | |
872 | trk->GetYapprox() >> 3, | |
873 | trk->GetZChannel(), | |
874 | trk->GetZSubChannel())); | |
875 | ||
876 | AliDebug(2, "uniquified:"); | |
877 | TIter trackZUniqueStage0(tracksZUniqueStage0); | |
878 | while (AliTRDtrackGTU *trk = (AliTRDtrackGTU*) trackZUniqueStage0()) | |
879 | AliDebug(2, Form("track ref layer %i : %i %i %i %i %i %i, y=%i, zch=%i idx=%i", | |
880 | AliTRDgtuParam::GetRefLayer(trk->GetRefLayerIdx()), | |
881 | trk->GetTrackletIndex(5), | |
882 | trk->GetTrackletIndex(4), | |
883 | trk->GetTrackletIndex(3), | |
884 | trk->GetTrackletIndex(2), | |
885 | trk->GetTrackletIndex(1), | |
886 | trk->GetTrackletIndex(0), | |
887 | trk->GetYapprox() >> 3, | |
888 | trk->GetZChannel(), | |
889 | trk->GetZSubChannel())); | |
890 | ||
52c19022 | 891 | // ----- Splitting in z ----- |
5f006bd7 | 892 | |
52c19022 | 893 | TIter next(tracksZUniqueStage0); |
894 | while (AliTRDtrackGTU *trk = (AliTRDtrackGTU*) next()) { | |
895 | tracksZSplitted[(trk->GetZChannel() + 3 * (trk->GetZSubChannel() - 1)) % 2]->Add(trk); | |
896 | } | |
5f006bd7 | 897 | |
d2c8b010 | 898 | for (Int_t i = 0; i < 2; i++) { |
899 | AliDebug(2, Form("split %i:", i)); | |
900 | TIter trackZSplit(tracksZSplitted[i]); | |
901 | while (AliTRDtrackGTU *trk = (AliTRDtrackGTU*) trackZSplit()) | |
902 | AliDebug(2, Form("track ref layer %i : %i %i %i %i %i %i, y=%i, zch=%i idx=%i", | |
903 | AliTRDgtuParam::GetRefLayer(trk->GetRefLayerIdx()), | |
904 | trk->GetTrackletIndex(5), | |
905 | trk->GetTrackletIndex(4), | |
906 | trk->GetTrackletIndex(3), | |
907 | trk->GetTrackletIndex(2), | |
908 | trk->GetTrackletIndex(1), | |
909 | trk->GetTrackletIndex(0), | |
910 | trk->GetYapprox() >> 3, | |
911 | trk->GetZChannel(), | |
912 | trk->GetZSubChannel())); | |
913 | } | |
914 | ||
52c19022 | 915 | // ----- Merging in zchanels - 2nd stage ----- |
5f006bd7 | 916 | |
52c19022 | 917 | do { |
c2aad3ae | 918 | // done = kTRUE; |
52c19022 | 919 | trkStage0 = 0x0; |
44eafcf2 | 920 | for (Int_t i = 1; i >= 0; i--) { |
52c19022 | 921 | AliTRDtrackGTU *trk = (AliTRDtrackGTU*) tracksZSplitted[i]->First(); |
922 | if (trk == 0) { | |
923 | continue; | |
924 | } | |
925 | else if (trkStage0 == 0x0 ) { | |
926 | trkStage0 = trk; | |
927 | minIdx = i; | |
c2aad3ae | 928 | // done = kFALSE; |
52c19022 | 929 | } |
ec5db61b | 930 | else if ( (((trk->GetZChannel() + 3 * (trk->GetZSubChannel() - 1)) / 2) < ((trkStage0->GetZChannel() + 3 * (trkStage0->GetZSubChannel() - 1)) / 2)) || |
931 | ((((trk->GetZChannel() + 3 * (trk->GetZSubChannel() - 1)) / 2) == ((trkStage0->GetZChannel() + 3 * (trkStage0->GetZSubChannel() - 1)) / 2)) && | |
932 | ((trk->GetYapprox() >> 3) < (trkStage0->GetYapprox() >> 3)) ) ) { | |
52c19022 | 933 | minIdx = i; |
934 | trkStage0 = trk; | |
c2aad3ae | 935 | // done = kFALSE; |
52c19022 | 936 | } |
937 | } | |
5f006bd7 | 938 | |
c8b1590d | 939 | if (!trkStage0) |
940 | break; | |
52c19022 | 941 | tracksZMergedStage1->Add(trkStage0); |
942 | tracksZSplitted[minIdx]->RemoveFirst(); | |
943 | } while (trkStage0 != 0); | |
5f006bd7 | 944 | |
52c19022 | 945 | Uniquifier(tracksZMergedStage1, ListOfTracks); |
5f006bd7 | 946 | |
d2c8b010 | 947 | AliDebug(2, "merged:"); |
948 | TIter trackZMergedStage1(tracksZMergedStage1); | |
949 | while (AliTRDtrackGTU *trk = (AliTRDtrackGTU*) trackZMergedStage1()) | |
950 | AliDebug(2, Form("track ref layer %i : %i %i %i %i %i %i, y=%i, zch=%i idx=%i", | |
951 | AliTRDgtuParam::GetRefLayer(trk->GetRefLayerIdx()), | |
952 | trk->GetTrackletIndex(5), | |
953 | trk->GetTrackletIndex(4), | |
954 | trk->GetTrackletIndex(3), | |
955 | trk->GetTrackletIndex(2), | |
956 | trk->GetTrackletIndex(1), | |
957 | trk->GetTrackletIndex(0), | |
958 | trk->GetYapprox() >> 3, | |
959 | trk->GetZChannel(), | |
960 | trk->GetZSubChannel())); | |
961 | ||
962 | AliDebug(2, "uniquified:"); | |
963 | TIter track(ListOfTracks); | |
964 | while (AliTRDtrackGTU *trk = (AliTRDtrackGTU*) track()) | |
965 | AliDebug(2, Form("track ref layer %i : %i %i %i %i %i %i, y=%i, zch=%i idx=%i", | |
966 | AliTRDgtuParam::GetRefLayer(trk->GetRefLayerIdx()), | |
967 | trk->GetTrackletIndex(5), | |
968 | trk->GetTrackletIndex(4), | |
969 | trk->GetTrackletIndex(3), | |
970 | trk->GetTrackletIndex(2), | |
971 | trk->GetTrackletIndex(1), | |
972 | trk->GetTrackletIndex(0), | |
973 | trk->GetYapprox() >> 3, | |
974 | trk->GetZChannel(), | |
975 | trk->GetZSubChannel())); | |
976 | ||
5f006bd7 | 977 | // cleaning up |
637666cd | 978 | for (Int_t zch = 0; zch < fGtuParam->GetNZChannels(); zch++) { |
979 | delete tracksRefMerged[zch]; | |
980 | delete tracksRefUnique[zch]; | |
981 | } | |
982 | delete [] tracksRefMerged; | |
983 | delete [] tracksRefUnique; | |
984 | ||
985 | ||
986 | delete tracksZMergedStage0; | |
987 | delete tracksZUniqueStage0; | |
988 | ||
989 | for (Int_t i = 0; i < 2; i++) | |
990 | delete tracksZSplitted[i]; | |
54d34aac | 991 | delete [] tracksZSplitted; |
637666cd | 992 | |
993 | delete tracksZMergedStage1; | |
994 | ||
995 | delete [] trkInRefLayer; | |
996 | ||
52c19022 | 997 | return kTRUE; |
998 | } | |
999 | ||
5f006bd7 | 1000 | Bool_t AliTRDgtuTMU::RunTrackReconstruction(TList* ListOfTracks) |
52c19022 | 1001 | { |
36dc3337 | 1002 | // run the track reconstruction for all tracks in the list |
1003 | ||
52c19022 | 1004 | TIter next(ListOfTracks); |
1005 | while (AliTRDtrackGTU *track = (AliTRDtrackGTU*) next()) { | |
1006 | CalculateTrackParams(track); | |
4ff7ed2b | 1007 | CalculatePID(track); |
44eafcf2 | 1008 | AliDebug(1, Form("track with pid = %i", track->GetPID())); |
52c19022 | 1009 | } |
1010 | return kTRUE; | |
1011 | } | |
1012 | ||
4ff7ed2b | 1013 | Bool_t AliTRDgtuTMU::CalculatePID(AliTRDtrackGTU *track) |
1014 | { | |
36dc3337 | 1015 | // calculate PID for the given track |
4ff7ed2b | 1016 | if (!track) { |
1017 | AliError("No track to calculate!"); | |
1018 | return kFALSE; | |
1019 | } | |
1020 | ||
4b43eeaf | 1021 | if (AliTRDgtuParam::GetUseGTUconst()) { |
44eafcf2 | 1022 | // averaging as in GTU |
ec5db61b | 1023 | AliDebug(1, "using GTU constants for PID calculation"); |
44eafcf2 | 1024 | ULong64_t coeff; |
1025 | ||
1026 | // selection of coefficient for averaging | |
1027 | switch(track->GetTrackletMask()){ | |
1028 | case 0x3f: | |
1029 | // 6 tracklets | |
1030 | coeff=0x5558; // approx. 1/6 | |
1031 | break; | |
1032 | ||
1033 | case 0x3e: | |
1034 | case 0x3d: | |
1035 | case 0x3b: | |
1036 | case 0x37: | |
1037 | case 0x2f: | |
1038 | case 0x1f: | |
1039 | // 5 tracklets | |
1040 | coeff=0x6666; // approx. 1/5 | |
1041 | break; | |
1042 | ||
1043 | default: | |
1044 | // 4 tracklets | |
1045 | coeff=0x8000; // = 0.25 | |
4ff7ed2b | 1046 | } |
44eafcf2 | 1047 | coeff &= 0x1ffff; // 17-bit constant |
1048 | ||
1049 | ULong64_t sum = 0; | |
ec5db61b | 1050 | Int_t i = 0; |
44eafcf2 | 1051 | for (Int_t iLayer = 0; iLayer < fGtuParam->GetNLayers(); iLayer++) { |
1052 | if ((track->GetTrackletMask() >> iLayer) & 1) { | |
1053 | sum += track->GetTracklet(iLayer)->GetPID(); | |
ec5db61b | 1054 | ++i; |
44eafcf2 | 1055 | } |
1056 | } | |
1057 | ||
ec5db61b | 1058 | Float_t av = 1./i * sum; |
a10c6981 | 1059 | sum = sum & 0x7ff; |
1060 | ULong64_t prod = (sum * coeff) & 0xfffffffffull; | |
1061 | ULong64_t prodFinal = ((prod >> 17) + ((prod >> 16) & 1)) & 0xff; | |
44eafcf2 | 1062 | |
ec5db61b | 1063 | if (TMath::Abs((prodFinal & 0xff) - av) > 0.5) |
1064 | AliError(Form("problem with PID averaging (hw <-> ar): %3lli <-> %4.1f", prodFinal & 0xff, av)); | |
44eafcf2 | 1065 | track->SetPID(prodFinal & 0xff); |
1066 | ||
1067 | return kTRUE; | |
1068 | } | |
1069 | else { | |
1070 | ||
1071 | // simple averaging | |
1072 | Int_t nTracklets = 0; | |
1073 | Int_t pidSum = 0; | |
1074 | for (Int_t layer = 0; layer < fGtuParam->GetNLayers(); layer++) { | |
1075 | if (!track->IsTrackletInLayer(layer)) { | |
1076 | continue; | |
1077 | } | |
1078 | AliTRDtrackletGTU *trk = track->GetTracklet(layer); | |
1079 | pidSum += trk->GetPID(); | |
1080 | nTracklets++; | |
1081 | } | |
ee373611 | 1082 | |
eaf6dbb0 | 1083 | if (nTracklets>0) |
1084 | track->SetPID(pidSum/nTracklets); | |
ee373611 | 1085 | else |
1086 | AliError("Track without contributing tracklets, no PID assigned"); | |
44eafcf2 | 1087 | |
1088 | return kTRUE; | |
4ff7ed2b | 1089 | } |
4ff7ed2b | 1090 | } |
1091 | ||
5f006bd7 | 1092 | Bool_t AliTRDgtuTMU::CalculateTrackParams(AliTRDtrackGTU *track) |
52c19022 | 1093 | { |
1094 | // calculate the track parameters | |
1095 | ||
1096 | if (!track) { | |
1097 | AliError("No track to calculate!"); | |
1098 | return kFALSE; | |
1099 | } | |
1100 | ||
1101 | Int_t a = 0; | |
1102 | Float_t b = 0; | |
1103 | Float_t c = 0; | |
1104 | Float_t x1; | |
1105 | Float_t x2; | |
1106 | ||
c8b1590d | 1107 | AliDebug(5,Form("There are %i tracklets in this track.", track->GetNTracklets())); |
52c19022 | 1108 | |
1109 | for (Int_t layer = 0; layer < fGtuParam->GetNLayers(); layer++) { | |
1110 | if (!track->IsTrackletInLayer(layer)) { | |
1111 | continue; | |
1112 | } | |
1113 | AliTRDtrackletGTU *trk = track->GetTracklet(layer); | |
1114 | if (!trk) { | |
1115 | AliError(Form("Could not get tracklet in layer %i\n", layer)); | |
1116 | continue; | |
1117 | } | |
ec5db61b | 1118 | AliDebug(10,Form(" layer %i trk yprime: %6i, aki: %6i", layer, trk->GetYPrime(), |
1119 | fGtuParam->GetAki(track->GetTrackletMask(), layer))); | |
1120 | a += (((fGtuParam->GetAki(track->GetTrackletMask(), layer) * trk->GetYPrime()) >> 7) + 1) >> 1; | |
52c19022 | 1121 | b += fGtuParam->GetBki(track->GetTrackletMask(), layer) * trk->GetYPrime() * fGtuParam->GetBinWidthY(); |
1122 | c += fGtuParam->GetCki(track->GetTrackletMask(), layer) * trk->GetYPrime() * fGtuParam->GetBinWidthY(); | |
1123 | } | |
1124 | if (a < 0) | |
1125 | a += 3; | |
1126 | a = a >> 2; | |
1127 | ||
ec5db61b | 1128 | track->SetFitParams(a << 2, b, c); |
52c19022 | 1129 | |
d2c8b010 | 1130 | fGtuParam->GetIntersectionPoints(track->GetTrackletMask(), x1, x2); |
1131 | ||
ec5db61b | 1132 | AliDebug(5,Form(" Track parameters: a16 = %i, a18 = %i, b = %f, c = %f, x1 = %f, x2 = %f, pt = %f (trkl mask: %i)", |
1133 | a, a << 2, b, c, x1, x2, track->GetPt(), track->GetTrackletMask())); | |
d2c8b010 | 1134 | |
52c19022 | 1135 | return kTRUE; |
1136 | } | |
1137 | ||
52c19022 | 1138 | |
6419bebb | 1139 | Bool_t AliTRDgtuTMU::Uniquifier(const TList *inlist, TList *outlist) |
52c19022 | 1140 | { |
36dc3337 | 1141 | // remove multiple occurences of the same track |
1142 | ||
52c19022 | 1143 | TIter next(inlist); |
1144 | AliTRDtrackGTU *trkStage0 = 0x0; | |
1145 | AliTRDtrackGTU *trkStage1 = 0x0; | |
1146 | ||
1147 | do { | |
1148 | trkStage0 = (AliTRDtrackGTU*) next(); | |
1149 | ||
36dc3337 | 1150 | Bool_t tracksEqual = kFALSE; |
52c19022 | 1151 | if (trkStage0 != 0 && trkStage1 != 0) { |
1152 | for (Int_t layer = 0; layer < fGtuParam->GetNLayers(); layer++) { | |
1153 | if (trkStage0->GetTrackletIndex(layer) != -1 && trkStage0->GetTrackletIndex(layer) == trkStage1->GetTrackletIndex(layer)) { | |
36dc3337 | 1154 | tracksEqual = kTRUE; |
52c19022 | 1155 | break; |
1156 | } | |
1157 | } | |
1158 | } | |
1159 | ||
36dc3337 | 1160 | if (tracksEqual) { |
44eafcf2 | 1161 | if (trkStage0->GetNTracklets() >= trkStage1->GetNTracklets()) |
52c19022 | 1162 | trkStage1 = trkStage0; |
5f006bd7 | 1163 | } |
52c19022 | 1164 | else { |
5f006bd7 | 1165 | if (trkStage1 != 0x0) |
52c19022 | 1166 | outlist->Add(trkStage1); |
1167 | trkStage1 = trkStage0; | |
5f006bd7 | 1168 | } |
1169 | ||
52c19022 | 1170 | } while (trkStage1 != 0x0); |
1171 | return kTRUE; | |
1172 | } |