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1 | /************************************************************************** | |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
16 | /* $Id: 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), | |
47 | fTrackletsPostInput(0x0), | |
48 | fZChannelTracklets(0x0), | |
49 | fTracks(0x0), | |
50 | fGtuParam(0x0), | |
51 | fStack(-1), | |
52 | fSector(-1) | |
53 | { | |
54 | // constructor which initializes the position information of the TMU | |
55 | ||
56 | fGtuParam = AliTRDgtuParam::Instance(); | |
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()]; | |
66 | fZChannelTracklets = new TList*[fGtuParam->GetNLayers()]; | |
67 | for (Int_t layer = 0; layer < fGtuParam->GetNLayers(); layer++) { | |
68 | fZChannelTracklets[layer] = new TList[fGtuParam->GetNZChannels()]; | |
69 | fTrackletsPostInput[layer] = new TObjArray(); | |
70 | } | |
71 | ||
72 | fTracks = new TList*[fGtuParam->GetNZChannels()]; | |
73 | for (Int_t zch = 0; zch < fGtuParam->GetNZChannels(); zch++) { | |
74 | fTracks[zch] = new TList[fGtuParam->GetNRefLayers()]; | |
75 | } | |
76 | ||
77 | if (stack > -1) | |
78 | SetStack(stack); | |
79 | if (sector > -1) | |
80 | SetSector(sector); | |
81 | } | |
82 | ||
83 | AliTRDgtuTMU::~AliTRDgtuTMU() | |
84 | { | |
85 | // destructor | |
86 | ||
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++) { | |
92 | delete [] fZChannelTracklets[layer]; | |
93 | // delete [] fTrackletsPostInput[layer]; | |
94 | } | |
95 | delete [] fZChannelTracklets; | |
96 | // delete [] fTrackletsPostInput; | |
97 | ||
98 | for (Int_t iLink = 0; iLink < fGtuParam->GetNLinks(); iLink++) { | |
99 | delete fTracklets[iLink]; | |
100 | } | |
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() ) { | |
109 | fSector = sector; | |
110 | return kTRUE; | |
111 | } | |
112 | ||
113 | AliError(Form("Invalid sector given: %i", sector)); | |
114 | return kFALSE; | |
115 | } | |
116 | ||
117 | Bool_t AliTRDgtuTMU::SetStack(Int_t stack) | |
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 | ||
130 | Bool_t AliTRDgtuTMU::Reset() | |
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 | |
141 | for (Int_t iLink = 0; iLink < fGtuParam->GetNLinks(); iLink++) { | |
142 | fTracklets[iLink]->Clear(); | |
143 | } | |
144 | for (Int_t layer = 0; layer < fGtuParam->GetNLinks()/2; layer++) { | |
145 | fTrackletsPostInput[layer]->Clear(); | |
146 | for (Int_t zch = 0; zch < fGtuParam->GetNZChannels(); zch++) | |
147 | fZChannelTracklets[layer][zch].Clear(); | |
148 | } | |
149 | ||
150 | fSector = -1; | |
151 | fStack = -1; | |
152 | ||
153 | return kTRUE; | |
154 | } | |
155 | ||
156 | Bool_t AliTRDgtuTMU::AddTracklet(AliTRDtrackletGTU *tracklet, Int_t link) | |
157 | { | |
158 | // add a tracklet on the given link | |
159 | ||
160 | fTracklets[link]->Add(tracklet); | |
161 | return kTRUE; | |
162 | } | |
163 | ||
164 | ||
165 | Bool_t AliTRDgtuTMU::RunTMU(TList *ListOfTracks, AliESDEvent *esd) | |
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) { | |
172 | AliError("No valid stack/sector set for this TMU! No tracking!"); | |
173 | return kFALSE; | |
174 | } | |
175 | ||
176 | // ----- Input units ----- | |
177 | AliDebug(1,"--------- Running Input units ----------"); | |
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 ----- | |
186 | AliDebug(1,"--------- Running Z-channel units ----------"); | |
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 ----- | |
196 | AliDebug(1,"--------- Running tracking units ----------"); | |
197 | for (Int_t zch = 0; zch < fGtuParam->GetNZChannels(); zch++) { | |
198 | if (!RunTrackFinder(zch, ListOfTracks)) { | |
199 | AliError(Form("Track Finder in z-channel %i failed", zch)); | |
200 | return kFALSE; | |
201 | } | |
202 | } | |
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 | ||
216 | if (esd) { | |
217 | TIter next(ListOfTracks); | |
218 | while (AliTRDtrackGTU *trk = (AliTRDtrackGTU*) next()) { | |
219 | AliESDTrdTrack *trdtrack = trk->CreateTrdTrack(); | |
220 | esd->AddTrdTrack(trdtrack); | |
221 | delete trdtrack; | |
222 | } | |
223 | } | |
224 | ||
225 | return kTRUE; | |
226 | } | |
227 | ||
228 | Bool_t AliTRDgtuTMU::RunInputUnit(Int_t layer) | |
229 | { | |
230 | // precalculations for the tracking and reconstruction | |
231 | ||
232 | Int_t iTrkl0 = 0; // A-side tracklet | |
233 | Int_t iTrkl1 = 0; // B-side tracklet | |
234 | ||
235 | while ((iTrkl0 < fTracklets[2*layer + 0]->GetEntriesFast()) || (iTrkl1 < fTracklets[2*layer + 1]->GetEntriesFast())) { | |
236 | if (iTrkl1 >= fTracklets[2*layer + 1]->GetEntriesFast()) { | |
237 | fTrackletsPostInput[layer]->AddLast(fTracklets[2*layer + 0]->At(iTrkl0)); | |
238 | iTrkl0++; | |
239 | } | |
240 | else { | |
241 | if (iTrkl0 >= fTracklets[2*layer + 0]->GetEntriesFast()) { | |
242 | fTrackletsPostInput[layer]->AddLast(fTracklets[2*layer + 1]->At(iTrkl1)); | |
243 | iTrkl1++; | |
244 | } | |
245 | else { | |
246 | if (((AliTRDtrackletGTU*) fTracklets[2*layer + 1]->At(iTrkl1))->GetZbin() < | |
247 | ((AliTRDtrackletGTU*) fTracklets[2*layer + 0]->At(iTrkl0))->GetZbin()) { | |
248 | fTrackletsPostInput[layer]->AddLast(fTracklets[2*layer + 1]->At(iTrkl1)); | |
249 | iTrkl1++; | |
250 | ||
251 | } | |
252 | else { | |
253 | fTrackletsPostInput[layer]->AddLast(fTracklets[2*layer + 0]->At(iTrkl0)); | |
254 | iTrkl0++; | |
255 | } | |
256 | } | |
257 | } | |
258 | } | |
259 | ||
260 | TIter next(fTrackletsPostInput[layer]); | |
261 | ||
262 | while ( AliTRDtrackletGTU *trk = (AliTRDtrackletGTU*) next() ) { | |
263 | trk->SetIndex(fTrackletsPostInput[layer]->IndexOf(trk)); | |
264 | ||
265 | Int_t alpha = (trk->GetYbin() >> fGtuParam->GetBitExcessY()) * fGtuParam->GetCiAlpha(layer); | |
266 | alpha = ( 2 * trk->GetdY() - (alpha >> fGtuParam->GetBitExcessAlpha()) + 1 ) >> 1; | |
267 | // wrapping projected alpha as in hardware | |
268 | if ((alpha < -64) || (alpha > 63)) | |
269 | AliError(Form("alpha out of range: %i", alpha)); | |
270 | alpha = alpha & 0x7f; | |
271 | if (alpha & 0x40) | |
272 | trk->SetAlpha(0xffffffc0 | alpha); | |
273 | else | |
274 | trk->SetAlpha(alpha); | |
275 | ||
276 | Int_t yproj = trk->GetdY() * (fGtuParam->GetCiYProj(layer)); //??? sign? | |
277 | yproj = ( ( ( (yproj >> fGtuParam->GetBitExcessYProj()) + trk->GetYbin() ) >> 2) + 1) >> 1; | |
278 | trk->SetYProj(yproj); | |
279 | ||
280 | trk->SetYPrime(trk->GetYbin() + fGtuParam->GetYt(fStack, layer, trk->GetZbin())); | |
281 | ||
282 | AliDebug(10, Form("0x%08x: idx: %3i, z: %2i, y: %5i, dy: %3i, y': %5i, y_proj: %5i, alpha: %3i, pid: %3i", | |
283 | trk->GetTrackletWord(), trk->GetIndex(), trk->GetZbin(), trk->GetYbin(), trk->GetdY(), trk->GetYPrime(), | |
284 | trk->GetYProj(), trk->GetAlpha(), trk->GetPID() )); | |
285 | } | |
286 | return kTRUE; | |
287 | } | |
288 | ||
289 | Bool_t AliTRDgtuTMU::RunZChannelUnit(Int_t layer) | |
290 | { | |
291 | // run the z-channel unit | |
292 | ||
293 | TIter next(fTrackletsPostInput[layer]); | |
294 | ||
295 | while (AliTRDtrackletGTU *trk = (AliTRDtrackletGTU*) next()) { | |
296 | for (Int_t zch = 0; zch < fGtuParam->GetNZChannels(); zch++) { | |
297 | if (fGtuParam->IsInZChannel(fStack, layer, zch, trk->GetZbin()) ) { | |
298 | trk->SetSubChannel(zch, fGtuParam->GetZSubchannel(fStack, layer, zch, trk->GetZbin()) ); | |
299 | ||
300 | TIter nexttrkl(&fZChannelTracklets[layer][zch], kIterBackward); | |
301 | AliTRDtrackletGTU *t = 0x0; | |
302 | while ((t = (AliTRDtrackletGTU*) nexttrkl.Next())) { | |
303 | if (t->GetSubChannel(zch) < trk->GetSubChannel(zch) || | |
304 | ((t->GetSubChannel(zch) == trk->GetSubChannel(zch)) && (t->GetYProj() < trk->GetYProj())) ) { | |
305 | break; | |
306 | } | |
307 | } | |
308 | if (t) | |
309 | fZChannelTracklets[layer][zch].AddAfter(t, trk); | |
310 | else | |
311 | fZChannelTracklets[layer][zch].AddFirst(trk); | |
312 | } | |
313 | } | |
314 | AliDebug(10, Form("stack %d, layer %2d: 0x%08x Z(2..0)=%i/%i/%i", | |
315 | fStack, layer, trk->GetTrackletWord(), | |
316 | fGtuParam->IsInZChannel(fStack, layer, 2, trk->GetZbin()) ? trk->GetSubChannel(2) : -1, | |
317 | fGtuParam->IsInZChannel(fStack, layer, 1, trk->GetZbin()) ? trk->GetSubChannel(1) : -1, | |
318 | fGtuParam->IsInZChannel(fStack, layer, 0, trk->GetZbin()) ? trk->GetSubChannel(0) : -1 | |
319 | )); | |
320 | } | |
321 | return kTRUE; | |
322 | } | |
323 | ||
324 | Bool_t AliTRDgtuTMU::RunTrackFinder(Int_t zch, TList* /* ListOfTracks */) | |
325 | { | |
326 | // run the track finding | |
327 | ||
328 | Int_t *notr = new Int_t[fGtuParam->GetNLayers()]; | |
329 | Int_t *ptrA = new Int_t[fGtuParam->GetNLayers()]; | |
330 | Int_t *ptrB = new Int_t[fGtuParam->GetNLayers()]; | |
331 | ||
332 | Bool_t *bHitA = new Bool_t[fGtuParam->GetNLayers()]; | |
333 | Bool_t *bHitB = new Bool_t[fGtuParam->GetNLayers()]; | |
334 | Bool_t *bAligned = new Bool_t[fGtuParam->GetNLayers()]; | |
335 | Bool_t *bAlignedA = new Bool_t[fGtuParam->GetNLayers()]; | |
336 | Bool_t *bAlignedB = new Bool_t[fGtuParam->GetNLayers()]; | |
337 | Bool_t *bDone = new Bool_t[fGtuParam->GetNLayers()]; | |
338 | Bool_t ready; | |
339 | ||
340 | Int_t *inc = new Int_t[fGtuParam->GetNLayers()]; | |
341 | Int_t *incprime = new Int_t[fGtuParam->GetNLayers()]; | |
342 | ||
343 | // ----- signals within current layer ----- | |
344 | Int_t yPlus; | |
345 | Int_t yMinus; | |
346 | Int_t ybPlus; | |
347 | Int_t ybMinus; | |
348 | Int_t alphaPlus; | |
349 | Int_t alphaMinus; | |
350 | Int_t nHits; | |
351 | Int_t nUnc; | |
352 | Int_t nWayBeyond; | |
353 | ||
354 | AliTRDtrackletGTU *trkRA = 0x0; // reference tracklet A | |
355 | AliTRDtrackletGTU *trkRB = 0x0; // reference tracklet B | |
356 | AliTRDtrackletGTU *trkA = 0x0; // tracklet A in current layer | |
357 | AliTRDtrackletGTU *trkB = 0x0; // tracklet B in current layer | |
358 | /* | |
359 | AliTRDtrackletGTU *trkEnd = new AliTRDtrackletGTU(); | |
360 | for (Int_t i = 0; i < fGtuParam->GetNZChannels(); i++) | |
361 | trkEnd->SetSubChannel(i, 7); | |
362 | trkEnd->SetYProj(0); | |
363 | trkEnd->SetAlpha(0); | |
364 | */ | |
365 | ||
366 | for (Int_t refLayerIdx = 0; refLayerIdx < fGtuParam->GetNRefLayers(); refLayerIdx++) { | |
367 | Int_t reflayer = fGtuParam->GetRefLayer(refLayerIdx); | |
368 | AliDebug(5,Form("Tracking for z-channel: %i, reflayer: %i", zch, reflayer)); | |
369 | ||
370 | ready = kFALSE; // ready if all channels done | |
371 | ||
372 | // for (Int_t iLayer = 0; iLayer < fGtuParam->GetNLayers(); iLayer++) { | |
373 | // for (Int_t iTrkl = 0; iTrkl < fZChannelTracklets[iLayer][zch].GetEntries(); iTrkl++) { | |
374 | // printf("%4i/%4i(%i,%i) ", | |
375 | // ((AliTRDtrackletGTU*) fZChannelTracklets[iLayer][zch].At(iTrkl))->GetYProj(), | |
376 | // ((AliTRDtrackletGTU*) fZChannelTracklets[iLayer][zch].At(iTrkl))->GetAlpha(), | |
377 | // ((AliTRDtrackletGTU*) fZChannelTracklets[iLayer][zch].At(iTrkl))->GetIndex(), | |
378 | // ((AliTRDtrackletGTU*) fZChannelTracklets[iLayer][zch].At(iTrkl))->GetSubChannel(zch) | |
379 | // ); | |
380 | // } | |
381 | // printf("\n"); | |
382 | // } | |
383 | ||
384 | for (Int_t layer = 0; layer < fGtuParam->GetNLayers(); layer++) { | |
385 | notr[layer] = fZChannelTracklets[layer][zch].GetEntries(); | |
386 | ptrA[layer] = 0; // notr[layer] > 0 ? 0 : -1; | |
387 | ptrB[layer] = 1; // notr[layer] > 1 ? 1 : -1; | |
388 | ||
389 | // not necessary here | |
390 | // bDone[layer] = (ptrB[layer] >= notr[layer] - 1); // trkB is last one | |
391 | // bDone[layer] = (notr[layer] <= 0); | |
392 | // ready = ready && bDone[layer]; | |
393 | ||
394 | if (reflayer == 1) | |
395 | AliDebug(5,Form("in layer: %i (zchannel = %i) there are: %i tracklets", layer, zch, notr[layer])); | |
396 | } | |
397 | ||
398 | if (ptrA[reflayer] < 0 && ptrB[reflayer] < 0) | |
399 | continue; | |
400 | ||
401 | while (!ready) { | |
402 | // ----- reference tracklets ----- | |
403 | trkRA = 0x0; | |
404 | trkRB = 0x0; | |
405 | if (0 <= ptrA[reflayer] && ptrA[reflayer] < notr[reflayer]) | |
406 | trkRA = (AliTRDtrackletGTU*) fZChannelTracklets[reflayer][zch].At(ptrA[reflayer]); | |
407 | else { | |
408 | AliDebug(10,Form("No valid tracklet in the reference at ptr: %i! Nothing done!", ptrA[reflayer])); | |
409 | break; | |
410 | } | |
411 | ||
412 | if (0 <= ptrB[reflayer] && ptrB[reflayer] < notr[reflayer]) | |
413 | trkRB = (AliTRDtrackletGTU*) fZChannelTracklets[reflayer][zch].At(ptrB[reflayer]); | |
414 | ||
415 | yPlus = trkRA->GetYProj() + fGtuParam->GetDeltaY(); | |
416 | yMinus = trkRA->GetYProj() - fGtuParam->GetDeltaY(); | |
417 | alphaPlus = trkRA->GetAlpha() + fGtuParam->GetDeltaAlpha(); | |
418 | alphaMinus = trkRA->GetAlpha() - fGtuParam->GetDeltaAlpha(); | |
419 | if (trkRB) { | |
420 | ybPlus = trkRB->GetYProj() + fGtuParam->GetDeltaY(); | |
421 | ybMinus = trkRB->GetYProj() - fGtuParam->GetDeltaY(); | |
422 | } | |
423 | else { // irrelevant (should be, is it?) | |
424 | ybPlus = trkRA->GetYProj() + fGtuParam->GetDeltaY(); | |
425 | ybMinus = trkRA->GetYProj() - fGtuParam->GetDeltaY(); | |
426 | } | |
427 | ||
428 | nHits = 0; | |
429 | nUnc = 0; | |
430 | nWayBeyond = 0; | |
431 | ||
432 | for (Int_t layer = 0; layer < fGtuParam->GetNLayers(); layer++) { | |
433 | bHitA[layer] = bHitB[layer] = bAligned[layer] = kFALSE; | |
434 | inc[layer] = incprime[layer] = 0; | |
435 | ||
436 | if (layer == reflayer) { | |
437 | bHitA[layer] = kTRUE; | |
438 | bAligned[layer] = kTRUE; | |
439 | nHits++; | |
440 | continue; | |
441 | } | |
442 | ||
443 | trkA = 0x0; | |
444 | trkB = 0x0; | |
445 | if (0 <= ptrA[layer] && ptrA[layer] < notr[layer]) | |
446 | trkA = (AliTRDtrackletGTU*) fZChannelTracklets[layer][zch].At(ptrA[layer]); | |
447 | if (0 <= ptrB[layer] && ptrB[layer] < notr[layer]) | |
448 | trkB = (AliTRDtrackletGTU*) fZChannelTracklets[layer][zch].At(ptrB[layer]); | |
449 | ||
450 | bAlignedA[layer] = kFALSE; | |
451 | bAlignedB[layer] = kFALSE; | |
452 | ||
453 | if (trkA) { | |
454 | bHitA[layer] = ( !(trkA->GetSubChannel(zch) < trkRA->GetSubChannel(zch) || (trkA->GetSubChannel(zch) == trkRA->GetSubChannel(zch) && trkA->GetYProj() < yMinus) ) && | |
455 | !(trkA->GetSubChannel(zch) > trkRA->GetSubChannel(zch) || (trkA->GetSubChannel(zch) == trkRA->GetSubChannel(zch) && trkA->GetYProj() > yPlus) ) && | |
456 | !(trkA->GetAlpha() < alphaMinus) && | |
457 | !(trkA->GetAlpha() > alphaPlus) ); | |
458 | bAlignedA[layer] = !(trkA->GetSubChannel(zch) < trkRA->GetSubChannel(zch) || (trkA->GetSubChannel(zch) == trkRA->GetSubChannel(zch) && trkA->GetYProj() < yMinus) ); | |
459 | } | |
460 | else { | |
461 | bHitA[layer] = 0; | |
462 | bAlignedA[layer] = kTRUE; | |
463 | } | |
464 | ||
465 | if (trkB) { | |
466 | bHitB[layer] = ( !(trkB->GetSubChannel(zch) < trkRA->GetSubChannel(zch) || (trkB->GetSubChannel(zch) == trkRA->GetSubChannel(zch) && trkB->GetYProj() < yMinus) ) && | |
467 | !(trkB->GetSubChannel(zch) > trkRA->GetSubChannel(zch) || (trkB->GetSubChannel(zch) == trkRA->GetSubChannel(zch) && trkB->GetYProj() > yPlus) ) && | |
468 | !(trkB->GetAlpha() < alphaMinus) && | |
469 | !(trkB->GetAlpha() > alphaPlus) ); | |
470 | bAlignedB[layer] = (trkB->GetSubChannel(zch) > trkRA->GetSubChannel(zch) || (trkB->GetSubChannel(zch) == trkRA->GetSubChannel(zch) && trkB->GetYProj() > yPlus) ); | |
471 | } | |
472 | else { | |
473 | bHitB[layer] = 0; | |
474 | bAlignedB[layer] = kTRUE; | |
475 | } | |
476 | ||
477 | bAligned[layer] = bAlignedA[layer] || bAlignedB[layer]; //??? | |
478 | // bAligned[layer] = bAlignedA[layer]; //??? | |
479 | ||
480 | if (bAligned[layer] && (bHitA[layer] || bHitB[layer]) ) | |
481 | nHits++; | |
482 | else if (!bAligned[layer] ) | |
483 | nUnc++; | |
484 | if (trkRB) { | |
485 | if (trkA) { | |
486 | if ((trkA->GetSubChannel(zch) > trkRB->GetSubChannel(zch)) || (trkA->GetSubChannel(zch) == trkRB->GetSubChannel(zch) && trkA->GetYProj() > ybPlus) ) | |
487 | nWayBeyond++; | |
488 | } | |
489 | else | |
490 | nWayBeyond++; | |
491 | } | |
492 | ||
493 | // pre-calculation for the layer shifting (alignment w. r. t. trkRB) | |
494 | if (trkA) { | |
495 | if(trkRB) { | |
496 | if ((trkA->GetSubChannel(zch) < trkRB->GetSubChannel(zch)) || (trkA->GetSubChannel(zch) == trkRB->GetSubChannel(zch) && trkA->GetYProj() < ybMinus )) // could trkA be aligned for trkRB | |
497 | incprime[layer] = 1; | |
498 | else | |
499 | incprime[layer] = 0; | |
500 | } | |
501 | else | |
502 | incprime[layer] = 1; | |
503 | ||
504 | if (trkB) { | |
505 | if (trkRB) { | |
506 | if ((trkB->GetSubChannel(zch) < trkRB->GetSubChannel(zch)) || (trkB->GetSubChannel(zch) == trkRB->GetSubChannel(zch) && trkB->GetYProj() < ybMinus )) // could trkB be aligned for trkRB | |
507 | incprime[layer] = 2; | |
508 | } | |
509 | else | |
510 | incprime[layer] = 2; | |
511 | } | |
512 | } | |
513 | } // end of loop over layers | |
514 | ||
515 | AliDebug(5,Form("logic calculation finished, Nhits: %i %s", | |
516 | nHits, (nHits >= 4) ? "-> track found" : "")); | |
517 | ||
518 | if (nHits >= 4) { | |
519 | // ----- track registration ----- | |
520 | AliTRDtrackGTU *track = new AliTRDtrackGTU(); | |
521 | track->SetSector(fSector); | |
522 | track->SetStack(fStack); | |
523 | for (Int_t layer = 0; layer < fGtuParam->GetNLayers(); layer++ ) { | |
524 | if (bHitA[layer] || layer == reflayer) | |
525 | track->AddTracklet((AliTRDtrackletGTU* ) fZChannelTracklets[layer][zch].At(ptrA[layer]), layer ); | |
526 | else if (bHitB[layer]) | |
527 | track->AddTracklet((AliTRDtrackletGTU* ) fZChannelTracklets[layer][zch].At(ptrB[layer]), layer ); | |
528 | } | |
529 | ||
530 | Bool_t registerTrack = kTRUE; | |
531 | for (Int_t layerIdx = refLayerIdx-1; layerIdx >= 0; layerIdx--) { | |
532 | if (track->IsTrackletInLayer(fGtuParam->GetRefLayer(layerIdx))) { | |
533 | if ((track->GetTracklet(fGtuParam->GetRefLayer(layerIdx)))->GetSubChannel(zch) > 0) { | |
534 | AliDebug(1,"Not registered"); | |
535 | registerTrack = kFALSE; | |
536 | } | |
537 | } | |
538 | } | |
539 | if (registerTrack) { | |
540 | track->SetZChannel(zch); | |
541 | track->SetRefLayerIdx(refLayerIdx); | |
542 | fTracks[zch][refLayerIdx].Add(track); | |
543 | } | |
544 | } | |
545 | ||
546 | if ( (nUnc != 0) && (nUnc + nHits >= 4) ) // could this position of the reference layer give some track //??? special check in case of hit? | |
547 | inc[reflayer] = 0; | |
548 | else if (nWayBeyond > 2) // no track possible for both reference tracklets | |
549 | inc[reflayer] = 2; | |
550 | else | |
551 | inc[reflayer] = 1; | |
552 | ||
553 | if (inc[reflayer] != 0) // reflayer is shifted | |
554 | for (Int_t layer = 0; layer < fGtuParam->GetNLayers(); layer++) { | |
555 | if (layer == reflayer) | |
556 | continue; | |
557 | inc[layer] = incprime[layer]; | |
558 | } | |
559 | else { // reflayer is not shifted | |
560 | for (Int_t layer = 0; layer < fGtuParam->GetNLayers(); layer++) { | |
561 | if (layer == reflayer || notr[layer] == 0) | |
562 | continue; | |
563 | inc[layer] = 0; | |
564 | trkA = 0x0; | |
565 | trkB = 0x0; | |
566 | if (0 <= ptrA[layer] && ptrA[layer] < notr[layer]) | |
567 | trkA = (AliTRDtrackletGTU*) fZChannelTracklets[layer][zch].At(ptrA[layer]); | |
568 | ||
569 | if (0 <= ptrB[layer] && ptrB[layer] < notr[layer]) | |
570 | trkB = (AliTRDtrackletGTU*) fZChannelTracklets[layer][zch].At(ptrB[layer]); | |
571 | ||
572 | if (trkA) { | |
573 | if ( !(trkA->GetSubChannel(zch) < trkRA->GetSubChannel(zch) || (trkA->GetSubChannel(zch) == trkRA->GetSubChannel(zch) && trkA->GetYProj() < yMinus) ) && | |
574 | !(trkA->GetSubChannel(zch) > trkRA->GetSubChannel(zch) || (trkA->GetSubChannel(zch) == trkRA->GetSubChannel(zch) && trkA->GetYProj() > yPlus ) ) ) // trkA could hit trkRA | |
575 | // if ( !(trkA->GetSubChannel(zch) < trkRA->GetSubChannel(zch) || (trkA->GetSubChannel(zch) == trkRA->GetSubChannel(zch) && trkA->GetYProj() < yMinus) ) ) | |
576 | inc[layer] = 0; | |
577 | else if (trkB) { | |
578 | if ( trkB->GetSubChannel(zch) < trkRA->GetSubChannel(zch) || (trkB->GetSubChannel(zch) == trkRA->GetSubChannel(zch) && trkB->GetYProj() < yMinus) ) | |
579 | inc[layer] = 2; | |
580 | else if ( !(trkB->GetSubChannel(zch) > trkRA->GetSubChannel(zch) || (trkB->GetSubChannel(zch) == trkRA->GetSubChannel(zch) && trkB->GetYProj() > yPlus) ) ) | |
581 | inc[layer] = 1; | |
582 | else | |
583 | inc[layer] = incprime[layer]; | |
584 | } | |
585 | else | |
586 | inc[layer] = incprime[layer]; | |
587 | } | |
588 | } | |
589 | } | |
590 | ||
591 | ready = kTRUE; | |
592 | for (Int_t layer = fGtuParam->GetNLayers()-1; layer >= 0; layer--) { | |
593 | ||
594 | bDone[layer] = ptrB[layer] < 0 || ptrB[layer] >= notr[layer]; | |
595 | ready = ready && bDone[layer]; | |
596 | ||
597 | if (inc[layer] != 0 && ptrA[layer] >= notr[layer]) | |
598 | AliError(Form("Invalid increment: %i at ptrA: %i, notr: %i", inc[layer], ptrA[layer], notr[layer])); | |
599 | ||
600 | // AliInfo(Form("Shifting layer: %i, notr: %i, ptrA: %i, ptrB: %i, inc: %i", layer, notr[layer], ptrA[layer], ptrB[layer], inc[layer])); | |
601 | AliDebug(10,Form(" Layer: %i %2i(%2i, %2i, %4i, %3i)%s%s %2i(%2i, %2i, %4i, %3i)%s%s +%i %s (no: %i)", | |
602 | layer, | |
603 | ptrA[layer], | |
604 | (0 <= ptrA[layer] && ptrA[layer] < notr[layer]) ? ((AliTRDtrackletGTU*) fZChannelTracklets[layer][zch].At(ptrA[layer]))->GetIndex() : -1, | |
605 | (0 <= ptrA[layer] && ptrA[layer] < notr[layer]) ? ((AliTRDtrackletGTU*) fZChannelTracklets[layer][zch].At(ptrA[layer]))->GetSubChannel(zch) : -1, | |
606 | (0 <= ptrA[layer] && ptrA[layer] < notr[layer]) ? ((AliTRDtrackletGTU*) fZChannelTracklets[layer][zch].At(ptrA[layer]))->GetYProj() : -1, | |
607 | (0 <= ptrA[layer] && ptrA[layer] < notr[layer]) ? ((AliTRDtrackletGTU*) fZChannelTracklets[layer][zch].At(ptrA[layer]))->GetAlpha() : -1, | |
608 | bHitA[layer] ? "*" : " ", bAlignedA[layer] ? "+" : " ", | |
609 | ptrB[layer], | |
610 | (0 <= ptrB[layer] && ptrB[layer] < notr[layer]) ? ((AliTRDtrackletGTU*) fZChannelTracklets[layer][zch].At(ptrB[layer]))->GetIndex() : -1, | |
611 | (0 <= ptrB[layer] && ptrB[layer] < notr[layer]) ? ((AliTRDtrackletGTU*) fZChannelTracklets[layer][zch].At(ptrB[layer]))->GetSubChannel(zch) : -1, | |
612 | (0 <= ptrB[layer] && ptrB[layer] < notr[layer]) ? ((AliTRDtrackletGTU*) fZChannelTracklets[layer][zch].At(ptrB[layer]))->GetYProj() : -1, | |
613 | (0 <= ptrB[layer] && ptrB[layer] < notr[layer]) ? ((AliTRDtrackletGTU*) fZChannelTracklets[layer][zch].At(ptrB[layer]))->GetAlpha() : -1, | |
614 | bHitB[layer] ? "*" : " ", bAlignedB[layer] ? "+" : " ", | |
615 | inc[layer], bDone[layer] ? "done" : " ", notr[layer])); | |
616 | ptrA[layer] += inc[layer]; | |
617 | ptrB[layer] += inc[layer]; | |
618 | } | |
619 | ||
620 | } // end of while | |
621 | } // end of loop over reflayer | |
622 | ||
623 | delete [] bHitA; | |
624 | delete [] bHitB; | |
625 | delete [] bAligned; | |
626 | delete [] bDone; | |
627 | delete [] inc; | |
628 | delete [] incprime; | |
629 | delete [] bAlignedA; | |
630 | delete [] bAlignedB; | |
631 | delete [] notr; | |
632 | delete [] ptrA; | |
633 | delete [] ptrB; | |
634 | ||
635 | return kTRUE; | |
636 | } | |
637 | ||
638 | Bool_t AliTRDgtuTMU::RunTrackMerging(TList* ListOfTracks) | |
639 | { | |
640 | TList **tracksRefMerged = new TList*[fGtuParam->GetNZChannels()]; | |
641 | TList **tracksRefUnique = new TList*[fGtuParam->GetNZChannels()]; | |
642 | ||
643 | for (Int_t zch = 0; zch < fGtuParam->GetNZChannels(); zch++) { | |
644 | tracksRefMerged[zch] = new TList; | |
645 | tracksRefUnique[zch] = new TList; | |
646 | } | |
647 | ||
648 | TList *tracksZMergedStage0 = new TList; | |
649 | TList *tracksZUniqueStage0 = new TList; | |
650 | ||
651 | TList **tracksZSplitted = new TList*[2]; | |
652 | for (Int_t i = 0; i < 2; i++) | |
653 | tracksZSplitted[i] = new TList; | |
654 | ||
655 | TList *tracksZMergedStage1 = new TList; | |
656 | ||
657 | AliTRDtrackGTU **trkInRefLayer = new AliTRDtrackGTU*[fGtuParam->GetNRefLayers()]; | |
658 | ||
659 | Bool_t done = kFALSE; | |
660 | Int_t minIdx = 0; | |
661 | AliTRDtrackGTU *trkStage0 = 0x0; | |
662 | ||
663 | for (Int_t zch = 0; zch < fGtuParam->GetNZChannels(); zch++) { | |
664 | // ----- Merging and Unification in Reflayers (seed_merger) ----- | |
665 | do { | |
666 | done = kTRUE; | |
667 | trkStage0 = 0x0; | |
668 | for (Int_t refLayerIdx = 0; refLayerIdx < fGtuParam->GetNRefLayers(); refLayerIdx++) { | |
669 | trkInRefLayer[refLayerIdx] = (AliTRDtrackGTU*) fTracks[zch][refLayerIdx].First(); | |
670 | if (trkInRefLayer[refLayerIdx] == 0) { | |
671 | continue; | |
672 | } | |
673 | else if (trkStage0 == 0x0 ) { | |
674 | trkStage0 = trkInRefLayer[refLayerIdx]; | |
675 | minIdx = refLayerIdx; | |
676 | done = kFALSE; | |
677 | } | |
678 | else if (trkInRefLayer[refLayerIdx]->GetZSubChannel() < trkStage0->GetZSubChannel() || | |
679 | (trkInRefLayer[refLayerIdx]->GetZSubChannel() == trkStage0->GetZSubChannel() && trkInRefLayer[refLayerIdx]->GetYapprox() < trkStage0->GetYapprox()) ) { | |
680 | minIdx = refLayerIdx; | |
681 | trkStage0 = trkInRefLayer[refLayerIdx]; | |
682 | done = kFALSE; | |
683 | } | |
684 | } | |
685 | if (!trkStage0) | |
686 | break; | |
687 | tracksRefMerged[zch]->Add(trkStage0); | |
688 | fTracks[zch][minIdx].RemoveFirst(); | |
689 | } while (trkStage0 != 0); | |
690 | ||
691 | Uniquifier(tracksRefMerged[zch], tracksRefUnique[zch]); | |
692 | ||
693 | AliDebug(2, Form("zchannel %i", zch)); | |
694 | TIter trackRefMerged(tracksRefMerged[zch]); | |
695 | while (AliTRDtrackGTU *trk = (AliTRDtrackGTU*) trackRefMerged()) | |
696 | AliDebug(2, Form("track ref layer %i : %i %i %i %i %i %i, y=%i, z_idx=%i", | |
697 | AliTRDgtuParam::GetRefLayer(trk->GetRefLayerIdx()), | |
698 | trk->GetTrackletIndex(5), | |
699 | trk->GetTrackletIndex(4), | |
700 | trk->GetTrackletIndex(3), | |
701 | trk->GetTrackletIndex(2), | |
702 | trk->GetTrackletIndex(1), | |
703 | trk->GetTrackletIndex(0), | |
704 | trk->GetYapprox() >> 3, | |
705 | trk->GetZSubChannel())); | |
706 | AliDebug(2, "uniquified:"); | |
707 | TIter trackRefUnique(tracksRefUnique[zch]); | |
708 | while (AliTRDtrackGTU *trk = (AliTRDtrackGTU*) trackRefUnique()) | |
709 | AliDebug(2, Form("track ref layer %i : %i %i %i %i %i %i, y=%i, z_idx=%i", | |
710 | AliTRDgtuParam::GetRefLayer(trk->GetRefLayerIdx()), | |
711 | trk->GetTrackletIndex(5), | |
712 | trk->GetTrackletIndex(4), | |
713 | trk->GetTrackletIndex(3), | |
714 | trk->GetTrackletIndex(2), | |
715 | trk->GetTrackletIndex(1), | |
716 | trk->GetTrackletIndex(0), | |
717 | trk->GetYapprox() >> 3, | |
718 | trk->GetZSubChannel())); | |
719 | } | |
720 | ||
721 | // ----- Merging in zchannels - 1st stage ----- | |
722 | ||
723 | do { | |
724 | done = kTRUE; | |
725 | trkStage0 = 0x0; | |
726 | for (Int_t zch = fGtuParam->GetNZChannels() - 1; zch > -1; zch--) { | |
727 | AliTRDtrackGTU *trk = (AliTRDtrackGTU*) tracksRefUnique[zch]->First(); | |
728 | if (trk == 0) { | |
729 | continue; | |
730 | } | |
731 | else if (trkStage0 == 0x0 ) { | |
732 | trkStage0 = trk; | |
733 | minIdx = zch; | |
734 | done = kFALSE; | |
735 | } | |
736 | else if ( ((trk->GetZChannel() + 3 * trk->GetZSubChannel()) / 2 - 1) < ((trkStage0->GetZChannel() + 3 * trkStage0->GetZSubChannel()) / 2 -1 ) || | |
737 | (((trk->GetZChannel() + 3 * trk->GetZSubChannel()) / 2 - 1) == ((trkStage0->GetZChannel() + 3 * trkStage0->GetZSubChannel()) / 2 -1 ) && (trk->GetYapprox() < trkStage0->GetYapprox()) ) ) { | |
738 | minIdx = zch; | |
739 | trkStage0 = trk; | |
740 | done = kFALSE; | |
741 | } | |
742 | } | |
743 | ||
744 | if (!trkStage0) | |
745 | break; | |
746 | tracksZMergedStage0->Add(trkStage0); | |
747 | tracksRefUnique[minIdx]->RemoveFirst(); | |
748 | } while (trkStage0 != 0); | |
749 | ||
750 | Uniquifier(tracksZMergedStage0, tracksZUniqueStage0); | |
751 | ||
752 | AliDebug(2, "stage 0:"); | |
753 | TIter trackZMergedStage0(tracksZMergedStage0); | |
754 | while (AliTRDtrackGTU *trk = (AliTRDtrackGTU*) trackZMergedStage0()) | |
755 | AliDebug(2, Form("track ref layer %i : %i %i %i %i %i %i, y=%i, zch=%i idx=%i", | |
756 | AliTRDgtuParam::GetRefLayer(trk->GetRefLayerIdx()), | |
757 | trk->GetTrackletIndex(5), | |
758 | trk->GetTrackletIndex(4), | |
759 | trk->GetTrackletIndex(3), | |
760 | trk->GetTrackletIndex(2), | |
761 | trk->GetTrackletIndex(1), | |
762 | trk->GetTrackletIndex(0), | |
763 | trk->GetYapprox() >> 3, | |
764 | trk->GetZChannel(), | |
765 | trk->GetZSubChannel())); | |
766 | ||
767 | AliDebug(2, "uniquified:"); | |
768 | TIter trackZUniqueStage0(tracksZUniqueStage0); | |
769 | while (AliTRDtrackGTU *trk = (AliTRDtrackGTU*) trackZUniqueStage0()) | |
770 | AliDebug(2, Form("track ref layer %i : %i %i %i %i %i %i, y=%i, zch=%i idx=%i", | |
771 | AliTRDgtuParam::GetRefLayer(trk->GetRefLayerIdx()), | |
772 | trk->GetTrackletIndex(5), | |
773 | trk->GetTrackletIndex(4), | |
774 | trk->GetTrackletIndex(3), | |
775 | trk->GetTrackletIndex(2), | |
776 | trk->GetTrackletIndex(1), | |
777 | trk->GetTrackletIndex(0), | |
778 | trk->GetYapprox() >> 3, | |
779 | trk->GetZChannel(), | |
780 | trk->GetZSubChannel())); | |
781 | ||
782 | // ----- Splitting in z ----- | |
783 | ||
784 | TIter next(tracksZUniqueStage0); | |
785 | while (AliTRDtrackGTU *trk = (AliTRDtrackGTU*) next()) { | |
786 | tracksZSplitted[(trk->GetZChannel() + 3 * (trk->GetZSubChannel() - 1)) % 2]->Add(trk); | |
787 | } | |
788 | ||
789 | for (Int_t i = 0; i < 2; i++) { | |
790 | AliDebug(2, Form("split %i:", i)); | |
791 | TIter trackZSplit(tracksZSplitted[i]); | |
792 | while (AliTRDtrackGTU *trk = (AliTRDtrackGTU*) trackZSplit()) | |
793 | AliDebug(2, Form("track ref layer %i : %i %i %i %i %i %i, y=%i, zch=%i idx=%i", | |
794 | AliTRDgtuParam::GetRefLayer(trk->GetRefLayerIdx()), | |
795 | trk->GetTrackletIndex(5), | |
796 | trk->GetTrackletIndex(4), | |
797 | trk->GetTrackletIndex(3), | |
798 | trk->GetTrackletIndex(2), | |
799 | trk->GetTrackletIndex(1), | |
800 | trk->GetTrackletIndex(0), | |
801 | trk->GetYapprox() >> 3, | |
802 | trk->GetZChannel(), | |
803 | trk->GetZSubChannel())); | |
804 | } | |
805 | ||
806 | // ----- Merging in zchanels - 2nd stage ----- | |
807 | ||
808 | do { | |
809 | done = kTRUE; | |
810 | trkStage0 = 0x0; | |
811 | for (Int_t i = 1; i >= 0; i--) { | |
812 | AliTRDtrackGTU *trk = (AliTRDtrackGTU*) tracksZSplitted[i]->First(); | |
813 | if (trk == 0) { | |
814 | continue; | |
815 | } | |
816 | else if (trkStage0 == 0x0 ) { | |
817 | trkStage0 = trk; | |
818 | minIdx = i; | |
819 | done = kFALSE; | |
820 | } | |
821 | else if ( (((trk->GetZChannel() + 3 * (trk->GetZSubChannel() - 1)) / 2) < ((trkStage0->GetZChannel() + 3 * (trkStage0->GetZSubChannel() - 1)) / 2)) || | |
822 | ((((trk->GetZChannel() + 3 * (trk->GetZSubChannel() - 1)) / 2) == ((trkStage0->GetZChannel() + 3 * (trkStage0->GetZSubChannel() - 1)) / 2)) && (trk->GetYapprox() < trkStage0->GetYapprox()) ) ) { | |
823 | minIdx = i; | |
824 | trkStage0 = trk; | |
825 | done = kFALSE; | |
826 | } | |
827 | } | |
828 | ||
829 | if (!trkStage0) | |
830 | break; | |
831 | tracksZMergedStage1->Add(trkStage0); | |
832 | tracksZSplitted[minIdx]->RemoveFirst(); | |
833 | } while (trkStage0 != 0); | |
834 | ||
835 | Uniquifier(tracksZMergedStage1, ListOfTracks); | |
836 | ||
837 | AliDebug(2, "merged:"); | |
838 | TIter trackZMergedStage1(tracksZMergedStage1); | |
839 | while (AliTRDtrackGTU *trk = (AliTRDtrackGTU*) trackZMergedStage1()) | |
840 | AliDebug(2, Form("track ref layer %i : %i %i %i %i %i %i, y=%i, zch=%i idx=%i", | |
841 | AliTRDgtuParam::GetRefLayer(trk->GetRefLayerIdx()), | |
842 | trk->GetTrackletIndex(5), | |
843 | trk->GetTrackletIndex(4), | |
844 | trk->GetTrackletIndex(3), | |
845 | trk->GetTrackletIndex(2), | |
846 | trk->GetTrackletIndex(1), | |
847 | trk->GetTrackletIndex(0), | |
848 | trk->GetYapprox() >> 3, | |
849 | trk->GetZChannel(), | |
850 | trk->GetZSubChannel())); | |
851 | ||
852 | AliDebug(2, "uniquified:"); | |
853 | TIter track(ListOfTracks); | |
854 | while (AliTRDtrackGTU *trk = (AliTRDtrackGTU*) track()) | |
855 | AliDebug(2, Form("track ref layer %i : %i %i %i %i %i %i, y=%i, zch=%i idx=%i", | |
856 | AliTRDgtuParam::GetRefLayer(trk->GetRefLayerIdx()), | |
857 | trk->GetTrackletIndex(5), | |
858 | trk->GetTrackletIndex(4), | |
859 | trk->GetTrackletIndex(3), | |
860 | trk->GetTrackletIndex(2), | |
861 | trk->GetTrackletIndex(1), | |
862 | trk->GetTrackletIndex(0), | |
863 | trk->GetYapprox() >> 3, | |
864 | trk->GetZChannel(), | |
865 | trk->GetZSubChannel())); | |
866 | ||
867 | // cleaning up | |
868 | for (Int_t zch = 0; zch < fGtuParam->GetNZChannels(); zch++) { | |
869 | delete tracksRefMerged[zch]; | |
870 | delete tracksRefUnique[zch]; | |
871 | } | |
872 | delete [] tracksRefMerged; | |
873 | delete [] tracksRefUnique; | |
874 | ||
875 | ||
876 | delete tracksZMergedStage0; | |
877 | delete tracksZUniqueStage0; | |
878 | ||
879 | for (Int_t i = 0; i < 2; i++) | |
880 | delete tracksZSplitted[i]; | |
881 | delete [] tracksZSplitted; | |
882 | ||
883 | delete tracksZMergedStage1; | |
884 | ||
885 | delete [] trkInRefLayer; | |
886 | ||
887 | return kTRUE; | |
888 | } | |
889 | ||
890 | Bool_t AliTRDgtuTMU::RunTrackReconstruction(TList* ListOfTracks) | |
891 | { | |
892 | // run the track reconstruction for all tracks in the list | |
893 | ||
894 | TIter next(ListOfTracks); | |
895 | while (AliTRDtrackGTU *track = (AliTRDtrackGTU*) next()) { | |
896 | CalculateTrackParams(track); | |
897 | CalculatePID(track); | |
898 | AliDebug(1, Form("track with pid = %i", track->GetPID())); | |
899 | } | |
900 | return kTRUE; | |
901 | } | |
902 | ||
903 | Bool_t AliTRDgtuTMU::CalculatePID(AliTRDtrackGTU *track) | |
904 | { | |
905 | // calculate PID for the given track | |
906 | if (!track) { | |
907 | AliError("No track to calculate!"); | |
908 | return kFALSE; | |
909 | } | |
910 | ||
911 | if (AliTRDgtuParam::GetUseGTUconst()) { | |
912 | // averaging as in GTU | |
913 | ULong64_t coeff; | |
914 | ||
915 | // selection of coefficient for averaging | |
916 | switch(track->GetTrackletMask()){ | |
917 | case 0x3f: | |
918 | // 6 tracklets | |
919 | coeff=0x5558; // approx. 1/6 | |
920 | break; | |
921 | ||
922 | case 0x3e: | |
923 | case 0x3d: | |
924 | case 0x3b: | |
925 | case 0x37: | |
926 | case 0x2f: | |
927 | case 0x1f: | |
928 | // 5 tracklets | |
929 | coeff=0x6666; // approx. 1/5 | |
930 | break; | |
931 | ||
932 | default: | |
933 | // 4 tracklets | |
934 | coeff=0x8000; // = 0.25 | |
935 | } | |
936 | coeff &= 0x1ffff; // 17-bit constant | |
937 | ||
938 | ULong64_t sum = 0; | |
939 | for (Int_t iLayer = 0; iLayer < fGtuParam->GetNLayers(); iLayer++) { | |
940 | if ((track->GetTrackletMask() >> iLayer) & 1) { | |
941 | sum += track->GetTracklet(iLayer)->GetPID(); | |
942 | } | |
943 | } | |
944 | ||
945 | sum = sum & 0x7ff; | |
946 | ULong64_t prod = (sum * coeff) & 0xfffffffffull; | |
947 | ULong64_t prodFinal = ((prod >> 17) + ((prod >> 16) & 1)) & 0xff; | |
948 | ||
949 | track->SetPID(prodFinal & 0xff); | |
950 | ||
951 | return kTRUE; | |
952 | } | |
953 | else { | |
954 | ||
955 | // simple averaging | |
956 | Int_t nTracklets = 0; | |
957 | Int_t pidSum = 0; | |
958 | for (Int_t layer = 0; layer < fGtuParam->GetNLayers(); layer++) { | |
959 | if (!track->IsTrackletInLayer(layer)) { | |
960 | continue; | |
961 | } | |
962 | AliTRDtrackletGTU *trk = track->GetTracklet(layer); | |
963 | pidSum += trk->GetPID(); | |
964 | nTracklets++; | |
965 | } | |
966 | if (nTracklets>0) | |
967 | track->SetPID(pidSum/nTracklets); | |
968 | ||
969 | return kTRUE; | |
970 | } | |
971 | } | |
972 | ||
973 | Bool_t AliTRDgtuTMU::CalculateTrackParams(AliTRDtrackGTU *track) | |
974 | { | |
975 | // calculate the track parameters | |
976 | ||
977 | if (!track) { | |
978 | AliError("No track to calculate!"); | |
979 | return kFALSE; | |
980 | } | |
981 | ||
982 | Int_t a = 0; | |
983 | Float_t b = 0; | |
984 | Float_t c = 0; | |
985 | Float_t x1; | |
986 | Float_t x2; | |
987 | ||
988 | AliDebug(5,Form("There are %i tracklets in this track.", track->GetNTracklets())); | |
989 | ||
990 | for (Int_t layer = 0; layer < fGtuParam->GetNLayers(); layer++) { | |
991 | if (!track->IsTrackletInLayer(layer)) { | |
992 | continue; | |
993 | } | |
994 | AliTRDtrackletGTU *trk = track->GetTracklet(layer); | |
995 | if (!trk) { | |
996 | AliError(Form("Could not get tracklet in layer %i\n", layer)); | |
997 | continue; | |
998 | } | |
999 | AliDebug(10,Form(" layer %i trk yprime: %6i, aki: %6i", layer, trk->GetYPrime(), (Int_t) (2048 * fGtuParam->GetAki(track->GetTrackletMask(), layer)))); | |
1000 | a += (((Int_t) (2048 * fGtuParam->GetAki(track->GetTrackletMask(), layer))) * trk->GetYPrime() + 1) >> 8; | |
1001 | b += fGtuParam->GetBki(track->GetTrackletMask(), layer) * trk->GetYPrime() * fGtuParam->GetBinWidthY(); | |
1002 | c += fGtuParam->GetCki(track->GetTrackletMask(), layer) * trk->GetYPrime() * fGtuParam->GetBinWidthY(); | |
1003 | } | |
1004 | if (a < 0) | |
1005 | a += 3; | |
1006 | a = a >> 2; | |
1007 | ||
1008 | track->SetFitParams(a, b, c); | |
1009 | ||
1010 | fGtuParam->GetIntersectionPoints(track->GetTrackletMask(), x1, x2); | |
1011 | ||
1012 | AliDebug(5,Form(" Track parameters: a = %i, b = %f, c = %f, x1 = %f, x2 = %f, pt = %f (trkl mask: %i)", a, b, c, x1, x2, track->GetPt(), track->GetTrackletMask())); | |
1013 | ||
1014 | return kTRUE; | |
1015 | } | |
1016 | ||
1017 | ||
1018 | Bool_t AliTRDgtuTMU::Uniquifier(const TList *inlist, TList *outlist) | |
1019 | { | |
1020 | // remove multiple occurences of the same track | |
1021 | ||
1022 | TIter next(inlist); | |
1023 | AliTRDtrackGTU *trkStage0 = 0x0; | |
1024 | AliTRDtrackGTU *trkStage1 = 0x0; | |
1025 | ||
1026 | do { | |
1027 | trkStage0 = (AliTRDtrackGTU*) next(); | |
1028 | ||
1029 | Bool_t tracksEqual = kFALSE; | |
1030 | if (trkStage0 != 0 && trkStage1 != 0) { | |
1031 | for (Int_t layer = 0; layer < fGtuParam->GetNLayers(); layer++) { | |
1032 | if (trkStage0->GetTrackletIndex(layer) != -1 && trkStage0->GetTrackletIndex(layer) == trkStage1->GetTrackletIndex(layer)) { | |
1033 | tracksEqual = kTRUE; | |
1034 | break; | |
1035 | } | |
1036 | } | |
1037 | } | |
1038 | ||
1039 | if (tracksEqual) { | |
1040 | if (trkStage0->GetNTracklets() >= trkStage1->GetNTracklets()) | |
1041 | trkStage1 = trkStage0; | |
1042 | } | |
1043 | else { | |
1044 | if (trkStage1 != 0x0) | |
1045 | outlist->Add(trkStage1); | |
1046 | trkStage1 = trkStage0; | |
1047 | } | |
1048 | ||
1049 | } while (trkStage1 != 0x0); | |
1050 | return kTRUE; | |
1051 | } |