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a6c02c85 | 1 | // @(#) $Id$ |
4aa41877 | 2 | // Original: AliHLTConfMapper.cxx,v 1.26 2005/06/14 10:55:21 cvetan Exp $ |
a6c02c85 | 3 | |
d6e2c707 | 4 | //************************************************************************** |
5 | //* This file is property of and copyright by the ALICE HLT Project * | |
6 | //* ALICE Experiment at CERN, All rights reserved. * | |
7 | //* * | |
8 | //* Primary Authors: Anders Vestbo, maintained by | |
9 | //* Matthias Richter <Matthias.Richter@ift.uib.no> * | |
10 | //* for The ALICE HLT Project. * | |
11 | //* * | |
12 | //* Permission to use, copy, modify and distribute this software and its * | |
13 | //* documentation strictly for non-commercial purposes is hereby granted * | |
14 | //* without fee, provided that the above copyright notice appears in all * | |
15 | //* copies and that both the copyright notice and this permission notice * | |
16 | //* appear in the supporting documentation. The authors make no claims * | |
17 | //* about the suitability of this software for any purpose. It is * | |
18 | //* provided "as is" without express or implied warranty. * | |
19 | //************************************************************************** | |
20 | ||
21 | /** @file AliHLTAltroEncoder.cxx | |
22 | @author Anders Vestbo, Matthias Richter | |
23 | @date Conformal mapping base class. | |
24 | @brief | |
a6c02c85 | 25 | */ |
26 | ||
055fed30 | 27 | #include <cassert> |
a6c02c85 | 28 | #include <sys/time.h> |
29 | ||
a6c02c85 | 30 | #include "AliHLTTPCRootTypes.h" |
31 | #include "AliHLTTPCSpacePointData.h" | |
32 | #include "AliHLTTPCLogging.h" | |
33 | #include "AliHLTTPCVertex.h" | |
34 | #include "AliHLTTPCConfMapTrack.h" | |
35 | #include "AliHLTTPCConfMapPoint.h" | |
36 | #include "AliHLTTPCTrackArray.h" | |
37 | #include "AliHLTTPCTransform.h" | |
38 | #include "AliHLTTPCConfMapper.h" | |
39 | ||
40 | #if __GNUC__ >= 3 | |
41 | using namespace std; | |
42 | #endif | |
43 | ||
44 | ClassImp(AliHLTTPCConfMapper) | |
45 | ||
46 | AliHLTTPCConfMapper::AliHLTTPCConfMapper() | |
2a083ac4 | 47 | : |
48 | fBench(kTRUE), | |
49 | fNTracks(0), | |
50 | fVertex(NULL), | |
51 | fVertexFinder(kFALSE), | |
055fed30 | 52 | fHit(), |
2a083ac4 | 53 | fTrack(NULL), |
54 | fMaxDca(0.0), // no clue whether this is reasonable, but at least better than without initialization | |
55 | fVolume(NULL), | |
56 | fRow(NULL), | |
57 | fNumRowSegment(0), | |
58 | fNumPhiSegment(0), | |
59 | fNumEtaSegment(0), | |
60 | fNumRowSegmentPlusOne(0), | |
61 | fNumPhiSegmentPlusOne(0), | |
62 | fNumEtaSegmentPlusOne(0), | |
63 | fNumPhiEtaSegmentPlusOne(0), | |
64 | fBounds(0), | |
65 | fPhiHitsOutOfRange(0), | |
66 | fEtaHitsOutOfRange(0), | |
67 | fPhiMin(0), | |
68 | fPhiMax(0), | |
69 | fEtaMin(0), | |
70 | fEtaMax(0), | |
71 | fRowMin(0), | |
72 | fRowMax(0), | |
1204d026 | 73 | fVertexConstraint(kTRUE), |
74 | fGoodDist(0.0), | |
75 | fMaxPhi(0.0), | |
76 | fMaxEta(0.0), | |
77 | fMainVertexTracks(0), | |
78 | fClustersUnused(0) | |
79 | ||
a6c02c85 | 80 | { |
81 | //Default constructor | |
a6c02c85 | 82 | fParamSet[0]=0; |
83 | fParamSet[1]=0; | |
84 | } | |
85 | ||
a6c02c85 | 86 | AliHLTTPCConfMapper::~AliHLTTPCConfMapper() |
87 | { | |
88 | // Destructor. | |
a6c02c85 | 89 | if(fRow) { |
90 | delete [] fRow; | |
91 | } | |
a6c02c85 | 92 | if(fTrack) { |
93 | delete fTrack; | |
94 | } | |
95 | } | |
96 | ||
97 | void AliHLTTPCConfMapper::InitVolumes() | |
98 | { | |
99 | //Data organization. | |
100 | //Allocate volumes, set conformal coordinates and pointers. | |
101 | ||
102 | //Should be done after setting the track parameters | |
103 | ||
104 | fNumRowSegmentPlusOne = AliHLTTPCTransform::GetNRows();//NumRows[0]; //Maximum 32. | |
105 | fNumPhiSegmentPlusOne = fNumPhiSegment+1; | |
106 | fNumEtaSegmentPlusOne = fNumEtaSegment+1; | |
107 | fNumPhiEtaSegmentPlusOne = fNumPhiSegmentPlusOne*fNumEtaSegmentPlusOne; | |
108 | fBounds = fNumRowSegmentPlusOne * fNumPhiSegmentPlusOne * fNumEtaSegmentPlusOne; | |
055fed30 | 109 | |
110 | Reset(); | |
a6c02c85 | 111 | |
055fed30 | 112 | fTrack = new AliHLTTPCTrackArray("AliHLTTPCConfMapTrack",10); |
113 | } | |
114 | ||
115 | void AliHLTTPCConfMapper::Reset() | |
116 | { | |
a6c02c85 | 117 | if(fVolume) delete [] fVolume; |
055fed30 | 118 | fVolume=NULL; |
a6c02c85 | 119 | if(fRow) delete [] fRow; |
055fed30 | 120 | fRow=NULL; |
a6c02c85 | 121 | |
055fed30 | 122 | fClustersUnused=0; |
123 | fHit.clear(); | |
a6c02c85 | 124 | } |
125 | ||
126 | void AliHLTTPCConfMapper::InitSector(Int_t sector,Int_t *rowrange,Float_t *etarange) | |
127 | { //sector means slice here | |
128 | //Initialize tracker for tracking in a given sector. | |
129 | //Resets track and hit arrays. | |
130 | //Here it is also possible to specify a subsector, by defining | |
131 | //rowrange[0]=innermost row; | |
132 | //rowrange[1]=outermostrow; | |
133 | //Finally you can specify etaslices to save time (assuming a good seed from TRD...) | |
134 | ||
135 | //Define tracking area: | |
136 | if(rowrange) | |
137 | { | |
138 | fRowMin = rowrange[0]; | |
139 | fRowMax = rowrange[1]; | |
140 | } | |
141 | else //complete sector | |
142 | { | |
143 | fRowMin = 0; | |
144 | fRowMax = AliHLTTPCTransform::GetNRows() - 1; | |
145 | } | |
146 | if(etarange) | |
147 | { | |
148 | fEtaMin = etarange[0]; | |
149 | fEtaMax = sector < 18 ? etarange[1] : -etarange[1]; | |
150 | } | |
151 | else | |
152 | { | |
153 | fEtaMin = 0; | |
154 | fEtaMax = sector < 18 ? 0.9 : -0.9; | |
155 | } | |
156 | ||
157 | //Set the angles to sector 2: | |
158 | fPhiMin = -10*AliHLTTPCTransform::ToRad();//fParam->GetAngle(sector) - 10/todeg; | |
159 | fPhiMax = 10*AliHLTTPCTransform::ToRad();//fParam->GetAngle(sector) + 10/todeg; | |
160 | ||
161 | fNTracks=0; | |
162 | fMainVertexTracks = 0; | |
163 | fClustersUnused = 0; | |
164 | fEtaHitsOutOfRange=0; | |
165 | fPhiHitsOutOfRange=0; | |
166 | ||
167 | fNumRowSegment = fRowMax - fRowMin; //number of rows to be considered by tracker | |
168 | LOG(AliHLTTPCLog::kInformational,"AliHLTTPCConfMapper::InitSector","B-field") | |
169 | <<"Tracker initializing with a magnetic field of "<<AliHLTTPCTransform::GetBField()<<ENDLOG; | |
170 | ||
171 | fTrack->Reset(); | |
172 | } | |
173 | ||
174 | Bool_t AliHLTTPCConfMapper::ReadHits(UInt_t count, AliHLTTPCSpacePointData* hits ) | |
175 | { | |
176 | //read hits | |
055fed30 | 177 | if (fHit.size()<fClustersUnused+count) fHit.resize(fClustersUnused+count); |
178 | assert(fHit.size()>=fClustersUnused+count); | |
179 | for (Int_t i=0;(UInt_t)i<count;i++) | |
738c049f | 180 | { |
181 | fHit[i+fClustersUnused].Reset(); | |
055fed30 | 182 | fHit[i+fClustersUnused].Read(hits[i]); |
a6c02c85 | 183 | } |
055fed30 | 184 | fClustersUnused += count; |
738c049f | 185 | |
fc455fba | 186 | LOG(AliHLTTPCLog::kDebug,"AliHLTTPCConfMapper::ReadHits","#hits") |
055fed30 | 187 | <<AliHLTTPCLog::kDec<<"#hits: "<<count<<" total: "<<fClustersUnused<<ENDLOG; |
a6c02c85 | 188 | |
189 | return true; | |
190 | } | |
191 | ||
192 | void AliHLTTPCConfMapper::SetPointers() | |
193 | { | |
194 | //Check if there are not enough clusters to make a track in this sector | |
195 | //Can happen in pp events. | |
196 | ||
197 | if(fClustersUnused < fMinPoints[fVertexConstraint]) | |
198 | return; | |
199 | ||
055fed30 | 200 | //Allocate detector volumes |
201 | if (fVolume==NULL) { | |
202 | LOG(AliHLTTPCLog::kDebug,"AliHLTTPCConfMapper::InitVolumes","Memory")<<AliHLTTPCLog::kDec<< | |
203 | "Allocating "<<fBounds*sizeof(AliHLTTPCConfMapContainer)<<" Bytes to fVolume"<<ENDLOG; | |
204 | fVolume = new AliHLTTPCConfMapContainer[fBounds]; | |
205 | } | |
206 | ||
207 | if (fRow==NULL) { | |
208 | LOG(AliHLTTPCLog::kDebug,"AliHLTTPCConfMapper::InitVolumes","Memory")<<AliHLTTPCLog::kDec<< | |
209 | "Allocating "<<fNumRowSegmentPlusOne*sizeof(AliHLTTPCConfMapContainer)<<" Bytes to fRow"<<ENDLOG; | |
210 | fRow = new AliHLTTPCConfMapContainer[fNumRowSegmentPlusOne]; | |
211 | } | |
212 | ||
a6c02c85 | 213 | memset(fVolume,0,fBounds*sizeof(AliHLTTPCConfMapContainer)); |
214 | memset(fRow,0,fNumRowSegmentPlusOne*sizeof(AliHLTTPCConfMapContainer)); | |
215 | ||
216 | Float_t phiSlice = (fPhiMax-fPhiMin)/fNumPhiSegment; | |
217 | Float_t etaSlice = (fEtaMax-fEtaMin)/fNumEtaSegment; | |
218 | ||
219 | Int_t volumeIndex; | |
220 | Int_t localcounter=0; | |
13398559 | 221 | assert((int)fHit.size()>=fClustersUnused); |
a6c02c85 | 222 | for(Int_t j=0; j<fClustersUnused; j++) |
223 | { | |
a6c02c85 | 224 | AliHLTTPCConfMapPoint *thisHit = &(fHit[j]); |
225 | ||
226 | thisHit->Setup(fVertex); | |
227 | ||
228 | Int_t localrow = thisHit->GetPadRow(); | |
229 | ||
230 | if(localrow < fRowMin || localrow > fRowMax) | |
231 | continue; | |
232 | ||
233 | //Get indexes: | |
234 | thisHit->SetPhiIndex((Int_t)((thisHit->GetPhi()-fPhiMin)/phiSlice +1)); | |
235 | ||
236 | if(thisHit->GetPhiIndex()<1 || thisHit->GetPhiIndex()>fNumPhiSegment) | |
237 | { | |
238 | //cout << "Phiindex: " << thisHit->phiIndex << " " << thisHit->GetPhi() << endl; | |
239 | fPhiHitsOutOfRange++; | |
240 | continue; | |
241 | } | |
242 | ||
243 | thisHit->SetEtaIndex((Int_t)((thisHit->GetEta()-fEtaMin)/etaSlice + 1)); | |
244 | if(thisHit->GetEtaIndex()<1 || thisHit->GetEtaIndex()>fNumEtaSegment) | |
245 | { | |
246 | //cout << "Etaindex: " << thisHit->etaIndex << " " << thisHit->GetEta() << endl; | |
247 | fEtaHitsOutOfRange++; | |
248 | continue; | |
249 | } | |
250 | localcounter++; | |
251 | ||
252 | volumeIndex = (localrow-fRowMin)*fNumPhiEtaSegmentPlusOne + | |
253 | thisHit->GetPhiIndex()*fNumEtaSegmentPlusOne+thisHit->GetEtaIndex(); | |
254 | ||
255 | if(fVolume[volumeIndex].first == NULL) | |
256 | fVolume[volumeIndex].first = (void *)thisHit; | |
257 | else | |
258 | ((AliHLTTPCConfMapPoint *)fVolume[volumeIndex].last)->SetNextVolumeHit(thisHit); | |
259 | fVolume[volumeIndex].last = (void *)thisHit; | |
260 | ||
261 | ||
262 | //set row pointers | |
263 | if(fRow[(localrow-fRowMin)].first == NULL) | |
264 | fRow[(localrow-fRowMin)].first = (void *)thisHit; | |
265 | else | |
266 | ((AliHLTTPCConfMapPoint *)(fRow[(localrow-fRowMin)].last))->SetNextRowHit(thisHit); | |
267 | fRow[(localrow-fRowMin)].last = (void *)thisHit; | |
268 | } | |
269 | ||
270 | if(fClustersUnused>0 && localcounter==0) | |
271 | LOG(AliHLTTPCLog::kError,"AliHLTTPCConfMapper::SetPointers","Parameters") | |
272 | <<AliHLTTPCLog::kDec<<"No points passed to track finder, hits out of range: " | |
273 | <<fEtaHitsOutOfRange+fPhiHitsOutOfRange<<ENDLOG; | |
274 | ||
275 | Int_t hits_accepted=fClustersUnused-(fEtaHitsOutOfRange+fPhiHitsOutOfRange); | |
055fed30 | 276 | LOG(AliHLTTPCLog::kDebug,"AliHLTTPCConfMapper::SetPointers","Setup") |
a6c02c85 | 277 | <<"Setup finished, hits out of range: "<<fEtaHitsOutOfRange+fPhiHitsOutOfRange |
278 | <<" hits accepted "<<hits_accepted<<ENDLOG; | |
279 | } | |
280 | ||
2a083ac4 | 281 | void AliHLTTPCConfMapper::MainVertexTrackingA() |
a6c02c85 | 282 | { |
283 | //Tracking with vertex constraint. | |
284 | ||
285 | if(!fParamSet[(Int_t)kTRUE]) | |
286 | { | |
287 | LOG(AliHLTTPCLog::kError,"AliHLTTPCConfMapper::MainVertexTracking","Parameters")<<AliHLTTPCLog::kDec<< | |
288 | "Tracking parameters not set!"<<ENDLOG; | |
289 | return; | |
290 | } | |
291 | ||
292 | Double_t initCpuTime,cpuTime; | |
293 | initCpuTime = CpuTime(); | |
294 | ||
295 | SetPointers(); | |
296 | SetVertexConstraint(true); | |
297 | cpuTime = CpuTime() - initCpuTime; | |
298 | if(fBench) | |
055fed30 | 299 | LOG(AliHLTTPCLog::kBenchmark,"AliHLTTPCConfMapper::MainVertexTrackingA","Timing") |
a6c02c85 | 300 | <<AliHLTTPCLog::kDec<<"Setup finished in "<<cpuTime*1000<<" ms"<<ENDLOG; |
301 | ||
302 | } | |
303 | ||
2a083ac4 | 304 | void AliHLTTPCConfMapper::MainVertexTrackingB() |
a6c02c85 | 305 | { |
306 | //Tracking with vertex constraint. | |
307 | ||
308 | if(!fParamSet[(Int_t)kTRUE]) | |
309 | { | |
310 | LOG(AliHLTTPCLog::kError,"AliHLTTPCConfMapper::MainVertexTracking","Parameters")<<AliHLTTPCLog::kDec<< | |
311 | "Tracking parameters not set!"<<ENDLOG; | |
312 | return; | |
313 | } | |
314 | Double_t initCpuTime,cpuTime; | |
315 | initCpuTime = CpuTime(); | |
316 | ||
317 | ClusterLoop(); | |
318 | ||
319 | cpuTime = CpuTime() - initCpuTime; | |
320 | if(fBench) | |
055fed30 | 321 | LOG(AliHLTTPCLog::kBenchmark,"AliHLTTPCConfMapper::MainVertexTrackingB","Timing") |
a6c02c85 | 322 | <<AliHLTTPCLog::kDec<<"Main Tracking finished in "<<cpuTime*1000<<" ms"<<ENDLOG; |
323 | } | |
324 | ||
325 | void AliHLTTPCConfMapper::MainVertexTracking() | |
326 | { | |
327 | //Tracking with vertex constraint. | |
328 | ||
329 | if(!fParamSet[(Int_t)kTRUE]) | |
330 | { | |
331 | LOG(AliHLTTPCLog::kError,"AliHLTTPCConfMapper::MainVertexTracking","Parameters")<<AliHLTTPCLog::kDec<< | |
332 | "Tracking parameters not set!"<<ENDLOG; | |
333 | return; | |
334 | } | |
335 | ||
336 | Double_t initCpuTime,cpuTime; | |
337 | initCpuTime = CpuTime(); | |
437e8e54 | 338 | |
339 | SetPointers(); | |
340 | ||
a6c02c85 | 341 | SetVertexConstraint(true); |
342 | ||
343 | ClusterLoop(); | |
344 | ||
345 | cpuTime = CpuTime() - initCpuTime; | |
346 | if(fBench) | |
055fed30 | 347 | LOG(AliHLTTPCLog::kBenchmark,"AliHLTTPCConfMapper::MainVertexTracking","Timing")<<AliHLTTPCLog::kDec<< |
a6c02c85 | 348 | "Tracking finished in "<<cpuTime*1000<<" ms"<<ENDLOG; |
349 | ||
350 | return; | |
351 | } | |
352 | ||
353 | void AliHLTTPCConfMapper::NonVertexTracking() | |
354 | { | |
355 | //Tracking with no vertex constraint. This should be called after doing MainVertexTracking, | |
356 | //in order to do tracking on the remaining clusters. | |
357 | //The conformal mapping is now done with respect to the first cluster | |
358 | //assosciated with this track. | |
359 | ||
360 | if(!fParamSet[(Int_t)kFALSE]) | |
361 | { | |
362 | LOG(AliHLTTPCLog::kError,"AliHLTTPCConfMapper::NonVertexTracking","Parameters")<<AliHLTTPCLog::kDec<< | |
363 | "Tracking parameters not set!"<<ENDLOG; | |
364 | return; | |
365 | } | |
366 | ||
367 | SetVertexConstraint(false); | |
437e8e54 | 368 | |
369 | SetPointers(); //To be able to do only nonvertextracking (more testing) | |
370 | ||
a6c02c85 | 371 | ClusterLoop(); |
372 | LOG(AliHLTTPCLog::kInformational,"AliHLTTPCConfMapper::NonVertexTracking","ntracks")<<AliHLTTPCLog::kDec<< | |
373 | "Number of nonvertex tracks found: "<<(fNTracks-fMainVertexTracks)<<ENDLOG; | |
374 | return; | |
375 | } | |
376 | ||
377 | void AliHLTTPCConfMapper::MainVertexSettings(Int_t trackletlength, Int_t tracklength, | |
378 | Int_t rowscopetracklet, Int_t rowscopetrack, | |
379 | Double_t maxphi,Double_t maxeta) | |
380 | { | |
381 | //Settings for main vertex tracking. The cuts are: | |
382 | //TrackletLength: #hits on segment, before trying to build a track | |
383 | //TrackLength: Minimum hits on a track | |
384 | //RowScopeTracklet: Row search range for segments | |
385 | //RowScopeTrack: Row search range for tracks | |
386 | ||
387 | SetTrackletLength(trackletlength,(Bool_t)true); | |
388 | SetRowScopeTracklet(rowscopetracklet, (Bool_t) true); | |
389 | SetRowScopeTrack(rowscopetrack, (Bool_t) true); | |
390 | SetMinPoints(tracklength,(Bool_t)true); | |
391 | fMaxPhi=maxphi; | |
392 | fMaxEta=maxeta; | |
393 | SetParamDone(kTRUE); | |
394 | } | |
395 | ||
396 | void AliHLTTPCConfMapper::NonVertexSettings(Int_t trackletlength, Int_t tracklength, | |
397 | Int_t rowscopetracklet, Int_t rowscopetrack) | |
398 | { | |
399 | //set parameters for non-vertex tracking | |
400 | SetTrackletLength(trackletlength,(Bool_t)false); | |
401 | SetRowScopeTracklet(rowscopetracklet, (Bool_t)false); | |
402 | SetRowScopeTrack(rowscopetrack, (Bool_t)false); | |
403 | SetMinPoints(tracklength,(Bool_t)false); | |
404 | SetParamDone(kFALSE); | |
405 | } | |
406 | ||
407 | void AliHLTTPCConfMapper::SetTrackCuts(Double_t hitChi2Cut, Double_t goodHitChi2, Double_t trackChi2Cut,Int_t maxdist,Bool_t vertexconstraint) | |
408 | { | |
409 | //Settings for tracks. The cuts are: | |
410 | //HitChi2Cut: Maximum hit chi2 | |
411 | //goodHitChi2: Chi2 to stop look for next hit | |
412 | //trackChi2Cut: Maximum track chi2 | |
413 | //maxdist: Maximum distance between two clusters when forming segments | |
414 | ||
415 | SetHitChi2Cut(hitChi2Cut,vertexconstraint); | |
416 | SetGoodHitChi2(goodHitChi2,vertexconstraint); | |
417 | SetTrackChi2Cut(trackChi2Cut,vertexconstraint); | |
418 | SetMaxDist(maxdist,vertexconstraint); | |
419 | } | |
420 | ||
421 | void AliHLTTPCConfMapper::SetTrackletCuts(Double_t maxangle,Double_t goodDist, Bool_t vc) | |
422 | { | |
423 | //Sets cuts of tracklets. Right now this is only: | |
424 | //maxangle: Maximum angle when forming segments (if trackletlength > 2) | |
425 | ||
426 | fGoodDist=goodDist; | |
427 | SetMaxAngleTracklet(maxangle, vc); | |
428 | } | |
429 | ||
430 | void AliHLTTPCConfMapper::ClusterLoop() | |
431 | { | |
432 | //Loop over hits, starting at outermost padrow, and trying to build segments. | |
433 | ||
434 | //Check if there are not enough clusters to make a track in this sector | |
435 | //Can happen in pp events. | |
436 | if(fClustersUnused < fMinPoints[fVertexConstraint]) | |
437 | return; | |
438 | ||
439 | Int_t rowsegm,lastrow = fRowMin + fMinPoints[fVertexConstraint]; | |
440 | AliHLTTPCConfMapPoint *hit; | |
441 | ||
442 | //Loop over rows, and try to create tracks from the hits. | |
443 | //Starts at the outermost row, and loops as long as a track can be build, due to length. | |
444 | ||
445 | for(rowsegm = fRowMax; rowsegm >= lastrow; rowsegm--) | |
446 | { | |
447 | if(fRow[(rowsegm-fRowMin)].first && ((AliHLTTPCConfMapPoint*)fRow[(rowsegm-fRowMin)].first)->GetPadRow() < fRowMin + 1) | |
448 | break; | |
449 | ||
450 | for(hit = (AliHLTTPCConfMapPoint*)fRow[(rowsegm-fRowMin)].first; hit!=0; hit=hit->GetNextRowHit()) | |
451 | { | |
452 | if(hit->GetUsage() == true) | |
453 | continue; | |
454 | else | |
455 | CreateTrack(hit); | |
456 | } | |
457 | } | |
458 | ||
459 | return; | |
460 | } | |
461 | ||
462 | ||
463 | void AliHLTTPCConfMapper::CreateTrack(AliHLTTPCConfMapPoint *hit) | |
464 | { | |
465 | //Tries to create a track from the initial hit given by ClusterLoop() | |
466 | ||
467 | AliHLTTPCConfMapPoint *closesthit = NULL; | |
468 | AliHLTTPCConfMapTrack *track = NULL; | |
469 | ||
470 | Int_t point; | |
471 | Int_t tracks = fNTracks; | |
472 | fNTracks++; | |
473 | ||
474 | track = (AliHLTTPCConfMapTrack*)fTrack->NextTrack(); | |
475 | ||
476 | //reset hit parameters: | |
477 | track->Reset(); | |
478 | ||
479 | UInt_t *trackhitnumber = track->GetHitNumbers(); | |
480 | ||
481 | //set conformal coordinates if we are looking for non vertex tracks | |
482 | if(!fVertexConstraint) | |
483 | { | |
484 | hit->SetAllCoord(hit); | |
485 | } | |
486 | ||
487 | //fill fit parameters of initial track: | |
488 | track->UpdateParam(hit); //here the number of hits is incremented. | |
489 | trackhitnumber[track->GetNumberOfPoints()-1] = hit->GetHitNumber(); | |
490 | ||
491 | Double_t dx,dy; | |
492 | //create tracklets: | |
493 | ||
494 | for(point=1; point<fTrackletLength[fVertexConstraint]; point++) | |
495 | { | |
496 | if((closesthit = GetNextNeighbor(hit))) | |
497 | {//closest hit exist | |
498 | ||
499 | // Calculate track length in sz plane | |
500 | dx = ((AliHLTTPCConfMapPoint*)closesthit)->GetX() - ((AliHLTTPCConfMapPoint*)hit)->GetX(); | |
501 | dy = ((AliHLTTPCConfMapPoint*)closesthit)->GetY() - ((AliHLTTPCConfMapPoint*)hit)->GetY(); | |
502 | //track->fLength += (Double_t)sqrt ( dx * dx + dy * dy ) ; | |
503 | Double_t length = track->GetLength()+(Double_t)sqrt ( dx * dx + dy * dy ); | |
504 | track->SetLength(length); | |
505 | ||
506 | //closesthit->SetS(track->fLength); | |
507 | closesthit->SetS(track->GetLength()); | |
508 | ||
509 | //update fit parameters | |
510 | track->UpdateParam(closesthit); | |
511 | trackhitnumber[track->GetNumberOfPoints()-1] = closesthit->GetHitNumber(); | |
512 | ||
513 | hit = closesthit; | |
514 | } | |
515 | else | |
516 | { | |
517 | //closest hit does not exist: | |
518 | track->DeleteCandidate(); | |
519 | fTrack->RemoveLast(); | |
520 | fNTracks--; | |
521 | point = fTrackletLength[fVertexConstraint]; | |
522 | } | |
523 | } | |
524 | ||
525 | //tracklet is long enough to be extended to a track | |
526 | if(track->GetNumberOfPoints() == fTrackletLength[fVertexConstraint]) | |
527 | { | |
528 | ||
529 | track->SetProperties(true); | |
530 | ||
531 | if(TrackletAngle(track) > fMaxAngleTracklet[fVertexConstraint]) | |
532 | {//proof if the first points seem to be a beginning of a track | |
533 | track->SetProperties(false); | |
534 | track->DeleteCandidate(); | |
535 | fTrack->RemoveLast(); | |
536 | fNTracks--; | |
537 | } | |
538 | ||
539 | else//good tracklet ->proceed, follow the trackfit | |
540 | { | |
541 | tracks++; | |
542 | ||
543 | //define variables to keep the total chi: | |
544 | Double_t xyChi2 = track->GetChiSq1(); | |
545 | Double_t szChi2 = track->GetChiSq2(); | |
546 | ||
547 | for(point = fTrackletLength[fVertexConstraint]; point <= fNumRowSegment; point++) | |
548 | { | |
549 | track->SetChiSq1(fHitChi2Cut[fVertexConstraint]); | |
550 | closesthit = GetNextNeighbor((AliHLTTPCConfMapPoint*)track->GetLastHit(),track); | |
551 | ||
552 | if(closesthit) | |
553 | { | |
554 | //keep total chi: | |
555 | Double_t lxyChi2 = track->GetChiSq1()-track->GetChiSq2(); | |
556 | xyChi2 += lxyChi2; | |
557 | closesthit->SetXYChi2(lxyChi2); | |
558 | ||
559 | //update track length: | |
560 | track->SetLength(closesthit->GetS()); | |
561 | szChi2 += track->GetChiSq2(); | |
562 | closesthit->SetSZChi2(track->GetChiSq2()); | |
563 | ||
564 | track->UpdateParam(closesthit); | |
565 | trackhitnumber[track->GetNumberOfPoints()-1] = closesthit->GetHitNumber(); | |
566 | ||
567 | //add closest hit to track | |
568 | closesthit->SetUsage(true); | |
569 | closesthit->SetTrackNumber(tracks-1); | |
570 | ||
571 | }//closesthit | |
572 | ||
573 | else | |
574 | { | |
575 | //closest hit does not exist | |
576 | point = fNumRowSegment; //continue with next hit in segment | |
577 | }//else | |
578 | ||
579 | }//create tracks | |
580 | ||
581 | //store track chi2: | |
582 | track->SetChiSq1(xyChi2); | |
583 | track->SetChiSq2(szChi2); | |
584 | Double_t normalizedchi2 = (track->GetChiSq1()+track->GetChiSq2())/track->GetNumberOfPoints(); | |
585 | ||
586 | //remove tracks with not enough points already now | |
587 | if(track->GetNumberOfPoints() < fMinPoints[fVertexConstraint] || normalizedchi2 > fTrackChi2Cut[fVertexConstraint]) | |
588 | { | |
589 | track->SetProperties(false); | |
590 | fNTracks--; | |
591 | track->DeleteCandidate(); | |
592 | fTrack->RemoveLast(); | |
593 | tracks--; | |
594 | } | |
595 | ||
596 | else | |
597 | { | |
598 | fClustersUnused -= track->GetNumberOfPoints(); | |
599 | track->ComesFromMainVertex(fVertexConstraint); | |
600 | //mark track as main vertex track or not | |
601 | track->SetSector(2); //only needed for testing purposes. | |
602 | track->SetRowRange(fRowMin,fRowMax); | |
603 | ||
604 | if(fVertexConstraint) | |
605 | fMainVertexTracks++; | |
606 | } | |
607 | ||
608 | }//good tracklet | |
609 | ||
610 | } | |
611 | ||
612 | return; | |
613 | } | |
614 | ||
615 | AliHLTTPCConfMapPoint *AliHLTTPCConfMapper::GetNextNeighbor(AliHLTTPCConfMapPoint *starthit, | |
616 | AliHLTTPCConfMapTrack *track) | |
617 | { | |
618 | //When forming segments: Finds closest hit to input hit | |
619 | //When forming tracks: Find closest hit to track fit. | |
620 | ||
621 | Double_t dist,closestdist = fMaxDist[fVertexConstraint]; | |
622 | ||
623 | AliHLTTPCConfMapPoint *hit = NULL; | |
624 | AliHLTTPCConfMapPoint *closesthit = NULL; | |
625 | ||
626 | Int_t subrowsegm; | |
627 | Int_t subphisegm; | |
628 | Int_t subetasegm; | |
629 | Int_t volumeIndex; | |
630 | Int_t testhit; | |
631 | ||
632 | Int_t maxrow = starthit->GetPadRow()-1; | |
633 | Int_t minrow; | |
634 | ||
635 | if(track) //finding hit close to trackfit | |
636 | { | |
637 | minrow = starthit->GetPadRow()-fRowScopeTrack[fVertexConstraint]; | |
638 | } | |
639 | else | |
640 | { | |
641 | minrow = starthit->GetPadRow()-fRowScopeTracklet[fVertexConstraint]; | |
642 | } | |
643 | ||
644 | //make a smart loop | |
645 | Int_t loopeta[25] = {0,0,0,-1,-1,-1,1,1,1, 0,0,-1,-1,1,1,-2,-2,-2,-2,-2,2,2,2,2,2}; | |
646 | Int_t loopphi[25] = {0,-1,1,0,-1,1,0,-1,1, -2,2,-2,2,-2,2,-2,-1,0,1,2,-2,-1,0,1,2}; | |
647 | ||
648 | if(minrow < fRowMin) | |
649 | minrow = fRowMin; | |
650 | if(maxrow < fRowMin) | |
651 | return 0; //reached the last padrow under consideration | |
652 | ||
653 | else | |
654 | { | |
655 | //loop over sub rows | |
656 | for(subrowsegm=maxrow; subrowsegm>=minrow; subrowsegm--) | |
657 | { | |
658 | //loop over subsegments, in the order defined above. | |
659 | for(Int_t i=0; i<9; i++) | |
660 | { | |
661 | subphisegm = starthit->GetPhiIndex() + loopphi[i]; | |
662 | ||
663 | if(subphisegm < 0 || subphisegm >= fNumPhiSegment) | |
664 | continue; | |
665 | /* | |
666 | if(subphisegm<0) | |
667 | subphisegm += fNumPhiSegment; | |
668 | ||
669 | else if(subphisegm >=fNumPhiSegment) | |
670 | subphisegm -= fNumPhiSegment; | |
671 | */ | |
672 | //loop over sub eta segments | |
673 | ||
674 | subetasegm = starthit->GetEtaIndex() + loopeta[i]; | |
675 | ||
676 | if(subetasegm < 0 || subetasegm >=fNumEtaSegment) | |
677 | continue;//segment exceeds bounds->skip it | |
678 | ||
679 | //loop over hits in this sub segment: | |
680 | volumeIndex=(subrowsegm-fRowMin)*fNumPhiEtaSegmentPlusOne + | |
681 | subphisegm*fNumEtaSegmentPlusOne + subetasegm; | |
682 | ||
683 | if(volumeIndex<0) | |
684 | {//debugging | |
685 | LOG(AliHLTTPCLog::kError,"AliHLTTPCConfMapper::GetNextNeighbor","Memory")<<AliHLTTPCLog::kDec<< | |
686 | "VolumeIndex error "<<volumeIndex<<ENDLOG; | |
687 | } | |
688 | ||
055fed30 | 689 | assert(fVolume!=NULL); |
a6c02c85 | 690 | for(hit = (AliHLTTPCConfMapPoint*)fVolume[volumeIndex].first; |
691 | hit!=0; hit = hit->GetNextVolumeHit()) | |
692 | { | |
693 | ||
694 | if(!hit->GetUsage()) | |
695 | {//hit was not used before | |
696 | ||
697 | //set conformal mapping if looking for nonvertex tracks: | |
698 | if(!fVertexConstraint) | |
699 | { | |
700 | hit->SetAllCoord(starthit); | |
701 | } | |
702 | ||
703 | if(track)//track search - look for nearest neighbor to extrapolated track | |
704 | { | |
437e8e54 | 705 | if (fVertexConstraint) { |
706 | if(!VerifyRange(starthit,hit)) | |
707 | continue; | |
708 | } | |
a6c02c85 | 709 | testhit = EvaluateHit(starthit,hit,track); |
710 | ||
711 | if(testhit == 0)//chi2 not good enough, keep looking | |
712 | continue; | |
713 | else if(testhit==2)//chi2 good enough, return it | |
714 | return hit; | |
715 | else | |
716 | closesthit = hit;//chi2 acceptable, but keep looking | |
717 | ||
718 | }//track search | |
719 | ||
720 | else //tracklet search, look for nearest neighbor | |
721 | { | |
722 | ||
723 | if((dist=CalcDistance(starthit,hit)) < closestdist) | |
724 | { | |
437e8e54 | 725 | if (fVertexConstraint) { |
738c049f | 726 | if(!VerifyRange(starthit,hit)) |
437e8e54 | 727 | continue; |
728 | } | |
a6c02c85 | 729 | closestdist = dist; |
730 | closesthit = hit; | |
731 | ||
732 | //if this hit is good enough, return it: | |
733 | if(closestdist < fGoodDist) | |
734 | return closesthit; | |
735 | } | |
736 | else | |
737 | continue;//sub hit was farther away than a hit before | |
738 | ||
739 | }//tracklet search | |
740 | ||
741 | }//hit not used before | |
742 | ||
743 | else continue; //sub hit was used before | |
744 | ||
745 | }//loop over hits in sub segment | |
746 | ||
747 | }//loop over sub segments | |
748 | ||
749 | }//loop over subrows | |
750 | ||
751 | }//else | |
752 | ||
753 | //closest hit found: | |
754 | if(closesthit)// && closestdist < mMaxDist) | |
755 | return closesthit; | |
756 | else | |
757 | return 0; | |
758 | } | |
759 | ||
760 | Int_t AliHLTTPCConfMapper::EvaluateHit(AliHLTTPCConfMapPoint *starthit,AliHLTTPCConfMapPoint *hit,AliHLTTPCConfMapTrack *track) | |
761 | { | |
762 | //Check if space point gives a fit with acceptable chi2. | |
763 | ||
764 | Double_t temp,dxy,lchi2,dx,dy,slocal,dsz,lszChi2; | |
765 | temp = (track->GetA2Xy()*hit->GetXprime()-hit->GetYprime()+track->GetA1Xy()); | |
766 | dxy = temp*temp/(track->GetA2Xy()*track->GetA2Xy() + 1.); | |
767 | ||
768 | //Calculate chi2 | |
769 | lchi2 = (dxy*hit->GetXYWeight()); | |
770 | ||
771 | if(lchi2 > track->GetChiSq1())//chi2 was worse than before. | |
772 | return 0; | |
773 | ||
774 | //calculate s and the distance hit-line | |
775 | dx = starthit->GetX()-hit->GetX(); | |
776 | dy = starthit->GetY()-hit->GetY(); | |
777 | //slocal = track->fLength+sqrt(dx*dx+dy*dy); | |
778 | slocal = track->GetLength()+sqrt(dx*dx+dy*dy); | |
779 | ||
780 | temp = (track->GetA2Sz()*slocal-hit->GetZ()+track->GetA1Sz()); | |
781 | dsz = temp*temp/(track->GetA2Sz()*track->GetA2Sz()+1); | |
782 | ||
783 | //calculate chi2 | |
784 | lszChi2 = dsz*hit->GetZWeight(); | |
785 | lchi2 += lszChi2; | |
786 | ||
787 | ||
788 | //check whether chi2 is better than previous one: | |
789 | if(lchi2 < track->GetChiSq1()) | |
790 | { | |
791 | track->SetChiSq1(lchi2); | |
792 | track->SetChiSq2(lszChi2); | |
793 | ||
794 | hit->SetS(slocal); | |
795 | ||
796 | //if chi2 good enough, stop here: | |
797 | if(lchi2 < fGoodHitChi2[fVertexConstraint]) | |
798 | return 2; | |
799 | ||
800 | return 1; | |
801 | } | |
802 | ||
803 | return 0; | |
804 | ||
805 | } | |
806 | ||
807 | Double_t AliHLTTPCConfMapper::CalcDistance(const AliHLTTPCConfMapPoint *hit1,const AliHLTTPCConfMapPoint *hit2) const | |
808 | { | |
809 | //Return distance between two clusters, defined by Pablo | |
810 | ||
811 | Double_t phidiff = fabs( hit1->GetPhi() - hit2->GetPhi() ); | |
812 | if (phidiff > AliHLTTPCTransform::Pi()) phidiff = AliHLTTPCTransform::TwoPi() - phidiff; | |
813 | ||
814 | return AliHLTTPCTransform::ToDeg()*fabs((Float_t)((hit1->GetPadRow() - hit2->GetPadRow()) * | |
815 | (phidiff + fabs( hit1->GetEta() - hit2->GetEta())))); | |
816 | } | |
817 | ||
818 | Bool_t AliHLTTPCConfMapper::VerifyRange(const AliHLTTPCConfMapPoint *hit1,const AliHLTTPCConfMapPoint *hit2) const | |
819 | { | |
820 | //Check if the hit are within reasonable range in phi and eta | |
821 | Double_t dphi,deta;//maxphi=0.1,maxeta=0.1; | |
822 | dphi = fabs(hit1->GetPhi() - hit2->GetPhi()); | |
823 | if(dphi > AliHLTTPCTransform::Pi()) dphi = fabs(AliHLTTPCTransform::TwoPi() - dphi); | |
824 | if(dphi > fMaxPhi) return false; | |
825 | ||
826 | deta = fabs(hit1->GetEta() - hit2->GetEta()); | |
827 | if(deta > fMaxEta) return false; | |
828 | ||
829 | return true; | |
830 | ||
831 | } | |
832 | ||
833 | Double_t AliHLTTPCConfMapper::TrackletAngle(AliHLTTPCConfMapTrack *track,Int_t n) const | |
834 | { | |
835 | // Returns the angle 'between' the last three points (started at point number n) on this track. | |
836 | ||
837 | if(n > track->GetNumberOfPoints()) | |
838 | n = track->GetNumberOfPoints(); | |
839 | ||
840 | if(n<3) | |
841 | return 0; | |
842 | ||
d6e2c707 | 843 | Double_t x1[2]={0,0}; |
844 | Double_t x2[2]={0,0}; | |
845 | Double_t x3[2]={0,0}; | |
a6c02c85 | 846 | Double_t angle1,angle2; |
847 | Int_t counter=0; | |
848 | for(track->StartLoop(); track->LoopDone(); track->GetNextHit()) | |
849 | { | |
850 | AliHLTTPCConfMapPoint *p = (AliHLTTPCConfMapPoint*)track->GetCurrentHit(); | |
851 | if( (n-1) == counter) | |
852 | { | |
853 | x1[0] = p->GetX(); | |
854 | x1[1] = p->GetY(); | |
855 | } | |
856 | else if( (n-2) == counter) | |
857 | { | |
858 | x2[0] = p->GetX(); | |
859 | x2[1] = p->GetY(); | |
860 | } | |
861 | else if( (n-3) == counter) | |
862 | { | |
863 | x3[0] = p->GetX(); | |
864 | x3[1] = p->GetY(); | |
865 | } | |
866 | counter++; | |
867 | } | |
868 | ||
869 | angle1 = atan2(x2[1]-x3[1],x2[0]-x3[0]); | |
870 | angle2 = atan2(x1[1]-x2[1],x1[0]-x2[0]); | |
871 | ||
872 | return fabs(angle1-angle2); | |
873 | ||
874 | /* | |
875 | Double_t x1[2]; | |
876 | Double_t x2[2]; | |
877 | Double_t angle1,angle2; | |
878 | TObjArray *hits = track->GetHits(); | |
879 | ||
880 | if (n > track->GetNumberOfPoints()) { | |
881 | n = track->GetNumberOfPoints(); | |
882 | } | |
883 | ||
884 | if (n<3) | |
885 | return 0; | |
886 | ||
887 | ||
888 | x1[0] = ((AliHLTTPCConfMapPoint *)hits->At(n-2))->GetX() - ((AliHLTTPCConfMapPoint *)hits->At(n-3))->GetX(); | |
889 | x1[1] = ((AliHLTTPCConfMapPoint *)hits->At(n-2))->GetY() - ((AliHLTTPCConfMapPoint *)hits->At(n-3))->GetY(); | |
890 | ||
891 | x2[0] = ((AliHLTTPCConfMapPoint *)hits->At(n-1))->GetX() - ((AliHLTTPCConfMapPoint *)hits->At(n-2))->GetX(); | |
892 | x2[1] = ((AliHLTTPCConfMapPoint *)hits->At(n-1))->GetY() - ((AliHLTTPCConfMapPoint *)hits->At(n-2))->GetY(); | |
893 | ||
894 | angle1 = atan2(x1[1],x1[0]); | |
895 | angle2 = atan2(x2[1],x1[0]); | |
896 | return fabs(angle1-angle2); | |
897 | */ | |
898 | } | |
899 | ||
900 | Int_t AliHLTTPCConfMapper::FillTracks() | |
901 | { | |
902 | //Fill track parameters. Which basically means do a fit of helix in real space, | |
903 | //which should be done in order to get nice tracks. | |
904 | ||
905 | Int_t numoftracks = fNTracks; | |
906 | if(fNTracks == 0) | |
907 | { | |
cb703d46 | 908 | LOG(AliHLTTPCLog::kDebug,"AliHLTTPCConfMapper::FillTracks","fNTracks")<<AliHLTTPCLog::kDec<< |
a6c02c85 | 909 | "No tracks found!!"<<ENDLOG; |
910 | return 0; | |
911 | } | |
912 | ||
055fed30 | 913 | LOG(AliHLTTPCLog::kInformational,"AliHLTTPCConfMapper::FillTracks","fNTracks")<<AliHLTTPCLog::kDec<< |
a6c02c85 | 914 | "Number of found tracks: "<<fNTracks<<ENDLOG; |
915 | ||
916 | // fTrack->Sort(); | |
917 | for(Int_t i=0; i<numoftracks; i++) | |
918 | { | |
919 | AliHLTTPCConfMapTrack *track = (AliHLTTPCConfMapTrack*)fTrack->GetTrack(i); | |
920 | track->Fill(fVertex,fMaxDca); | |
921 | } | |
922 | return 1; | |
923 | } | |
924 | ||
925 | Double_t AliHLTTPCConfMapper::CpuTime() | |
926 | { | |
927 | //Return the Cputime in seconds. | |
928 | struct timeval tv; | |
929 | gettimeofday( &tv, NULL ); | |
930 | return tv.tv_sec+(((Double_t)tv.tv_usec)/1000000.); | |
931 | } |