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Commit | Line | Data |
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266829be | 1 | //$Id$ |
2 | ||
b661165c | 3 | // Author: Anders Vestbo <mailto:vestbo@fi.uib.no> |
4 | //*-- Copyright © ASV | |
5 | ||
108615fc | 6 | #include <iostream.h> |
7 | #include <time.h> | |
8 | #include <math.h> | |
355debe1 | 9 | #include <sys/time.h> |
108615fc | 10 | #include "AliL3ConfMapper.h" |
11 | ||
266829be | 12 | #include "AliL3Defs.h" |
355debe1 | 13 | #include "AliL3Logging.h" |
108615fc | 14 | #include "AliL3Vertex.h" |
15 | #include "AliL3ConfMapTrack.h" | |
16 | #include "AliL3ConfMapPoint.h" | |
17 | #include "AliL3TrackArray.h" | |
ef79795d | 18 | #include "AliL3Transform.h" |
108615fc | 19 | |
b661165c | 20 | //_____________________________________________________________ |
21 | // AliL3ConfMapper | |
108615fc | 22 | // |
b661165c | 23 | // Conformal mapping base class |
108615fc | 24 | // |
108615fc | 25 | ClassImp(AliL3ConfMapper) |
26 | ||
27 | Double_t AliL3ConfMapper::pi=3.14159265358979323846; | |
28 | Double_t AliL3ConfMapper::twopi=2*pi; | |
29 | Double_t AliL3ConfMapper::todeg=180./pi; | |
30 | ||
31 | AliL3ConfMapper::AliL3ConfMapper() | |
32 | { | |
33 | //Default constructor | |
34 | fVertex = NULL; | |
35 | fTrack = NULL; | |
36 | fHit = NULL; | |
108615fc | 37 | fVolume = NULL; |
38 | fRow = NULL; | |
39 | fBench = (Bool_t)true; | |
40 | fParamSet = (Bool_t)false; | |
41 | fVertexConstraint = (Bool_t)true; | |
266829be | 42 | |
108615fc | 43 | } |
44 | ||
45 | ||
46 | AliL3ConfMapper::~AliL3ConfMapper() | |
47 | { | |
48 | // Destructor. | |
49 | ||
50 | if(fVolume) { | |
51 | delete [] fVolume; | |
52 | } | |
53 | if(fRow) { | |
54 | delete [] fRow; | |
55 | } | |
108615fc | 56 | if(fHit) { |
57 | delete [] fHit; | |
58 | } | |
59 | if(fTrack) { | |
60 | delete fTrack; | |
61 | } | |
62 | ||
63 | } | |
355debe1 | 64 | |
65 | void AliL3ConfMapper::InitVolumes() | |
66 | { | |
67 | //Data organization. | |
68 | //Allocate volumes, set conformal coordinates and pointers. | |
69 | ||
70 | //Should be done after setting the track parameters | |
71 | ||
72 | fNumRowSegmentPlusOne = 176;//NumRows[0]; //Maximum 32. | |
73 | fNumPhiSegmentPlusOne = fNumPhiSegment+1; | |
74 | fNumEtaSegmentPlusOne = fNumEtaSegment+1; | |
75 | fNumPhiEtaSegmentPlusOne = fNumPhiSegmentPlusOne*fNumEtaSegmentPlusOne; | |
76 | fBounds = fNumRowSegmentPlusOne * fNumPhiSegmentPlusOne * fNumEtaSegmentPlusOne; | |
77 | ||
78 | //Allocate volumes: | |
79 | if(fVolume) delete [] fVolume; | |
80 | if(fRow) delete [] fRow; | |
81 | ||
82 | LOG(AliL3Log::kInformational,"AliL3ConfMapper::InitVolumes","Memory")<<AliL3Log::kDec<< | |
83 | "Allocating "<<fBounds*sizeof(AliL3ConfMapContainer)<<" Bytes to fVolume"<<ENDLOG; | |
84 | LOG(AliL3Log::kInformational,"AliL3ConfMapper::InitVolumes","Memory")<<AliL3Log::kDec<< | |
85 | "Allocating "<<fNumRowSegmentPlusOne*sizeof(AliL3ConfMapContainer)<<" Bytes to fRow"<<ENDLOG; | |
86 | ||
87 | fVolume = new AliL3ConfMapContainer[fBounds]; | |
88 | fRow = new AliL3ConfMapContainer[fNumRowSegmentPlusOne]; | |
89 | ||
90 | memset(fVolume,0,fBounds*sizeof(AliL3ConfMapContainer)); | |
91 | memset(fRow,0,fNumRowSegmentPlusOne*sizeof(AliL3ConfMapContainer)); | |
92 | ||
494fad94 | 93 | Int_t max_num_of_tracks = 1000; |
94 | Int_t max_num_of_hits = 50000; | |
355debe1 | 95 | |
96 | if(fHit) | |
97 | delete [] fHit; | |
98 | if(fTrack) | |
99 | delete fTrack; | |
100 | ||
101 | fHit = new AliL3ConfMapPoint[max_num_of_hits]; | |
102 | fTrack = new AliL3TrackArray("AliL3ConfMapTrack",max_num_of_tracks); | |
103 | } | |
108615fc | 104 | |
105 | void AliL3ConfMapper::InitSector(Int_t sector,Int_t *rowrange,Float_t *etarange) | |
106 | { | |
107 | //Initialize tracker for tracking in a given sector. | |
108 | //Resets track and hit arrays. | |
109 | //Here it is also possible to specify a subsector, by defining | |
110 | //rowrange[0]=innermost row; | |
111 | //rowrange[1]=outermostrow; | |
112 | //Finally you can specify etaslices to save time (assuming a good seed from TRD...) | |
355debe1 | 113 | |
108615fc | 114 | //Define tracking area: |
115 | if(rowrange) | |
116 | { | |
117 | fRowMin = rowrange[0]; | |
118 | fRowMax = rowrange[1]; | |
119 | } | |
120 | else //complete sector | |
121 | { | |
122 | fRowMin = 0; | |
ae97a0b9 | 123 | fRowMax = 175; |
108615fc | 124 | } |
125 | if(etarange) | |
126 | { | |
127 | fEtaMin = etarange[0]; | |
128 | fEtaMax = etarange[1]; | |
129 | } | |
130 | else | |
131 | { | |
132 | fEtaMin = 0; | |
494fad94 | 133 | //fEtaMax = sector < 18 ? 1 : -1; |
134 | fEtaMax = sector < 18 ? 0.9 : -0.9; | |
108615fc | 135 | } |
136 | ||
137 | //Set the angles to sector 2: | |
138 | fPhiMin = -1.*10/todeg;//fParam->GetAngle(sector) - 10/todeg; | |
139 | fPhiMax = 10/todeg;//fParam->GetAngle(sector) + 10/todeg; | |
140 | ||
108615fc | 141 | nTracks=0; |
266829be | 142 | fMainVertexTracks = 0; |
108615fc | 143 | fClustersUnused = 0; |
144 | ||
145 | fNumRowSegment = fRowMax - fRowMin; //number of rows to be considered by tracker | |
266829be | 146 | LOG(AliL3Log::kInformational,"AliL3ConfMapper::InitSector","B-field") |
ef79795d | 147 | <<"Tracker initializing assuming magnetic field of "<<AliL3Transform::GetBField()<<ENDLOG; |
355debe1 | 148 | |
149 | fTrack->Reset(); | |
108615fc | 150 | } |
151 | ||
152 | ||
153 | ||
154 | Bool_t AliL3ConfMapper::ReadHits(UInt_t count, AliL3SpacePointData* hits ) | |
155 | { | |
108615fc | 156 | Int_t nhit=(Int_t)count; |
a9d69a4d | 157 | for (Int_t i=0;i<nhit;i++) |
355debe1 | 158 | { |
159 | fHit[i].Reset(); | |
160 | fHit[i].ReadHits(&(hits[i])); | |
161 | } | |
108615fc | 162 | fClustersUnused += nhit; |
355debe1 | 163 | LOG(AliL3Log::kInformational,"AliL3ConfMapper::ReadHits","#hits") |
164 | <<AliL3Log::kDec<<"hit_counter: "<<nhit<<" count: "<<count<<ENDLOG; | |
165 | ||
108615fc | 166 | return true; |
167 | } | |
168 | ||
169 | ||
170 | void AliL3ConfMapper::SetPointers() | |
171 | { | |
108615fc | 172 | |
355debe1 | 173 | //Reset detector volumes |
108615fc | 174 | memset(fVolume,0,fBounds*sizeof(AliL3ConfMapContainer)); |
175 | memset(fRow,0,fNumRowSegmentPlusOne*sizeof(AliL3ConfMapContainer)); | |
176 | ||
177 | Float_t phiSlice = (fPhiMax-fPhiMin)/fNumPhiSegment; | |
178 | Float_t etaSlice = (fEtaMax-fEtaMin)/fNumEtaSegment; | |
355debe1 | 179 | |
108615fc | 180 | Int_t volumeIndex; |
e0e14b24 | 181 | Int_t local_counter=0; |
108615fc | 182 | for(Int_t j=0; j<fClustersUnused; j++) |
183 | { | |
184 | ||
185 | //AliL3ConfMapPoint *thisHit = (AliL3ConfMapPoint*)fHit->At(j); | |
a9d69a4d | 186 | AliL3ConfMapPoint *thisHit = &(fHit[j]); |
108615fc | 187 | |
188 | thisHit->Setup(fVertex); | |
189 | ||
190 | Int_t localrow = thisHit->GetPadRow(); | |
191 | ||
108615fc | 192 | if(localrow < fRowMin || localrow > fRowMax) |
193 | continue; | |
108615fc | 194 | |
195 | //Get indexes: | |
196 | thisHit->phiIndex=(Int_t)((thisHit->GetPhi()-fPhiMin)/phiSlice +1); | |
197 | ||
198 | if(thisHit->phiIndex<1 || thisHit->phiIndex>fNumPhiSegment) | |
199 | { | |
200 | fPhiHitsOutOfRange++; | |
201 | continue; | |
202 | } | |
203 | ||
204 | thisHit->etaIndex=(Int_t)((thisHit->GetEta()-fEtaMin)/etaSlice + 1); | |
205 | if(thisHit->etaIndex<1 || thisHit->etaIndex>fNumEtaSegment) | |
206 | { | |
207 | fEtaHitsOutOfRange++; | |
208 | continue; | |
209 | } | |
e0e14b24 | 210 | local_counter++; |
355debe1 | 211 | |
212 | volumeIndex = (localrow-fRowMin)*fNumPhiEtaSegmentPlusOne+thisHit->phiIndex*fNumEtaSegmentPlusOne+thisHit->etaIndex; | |
213 | ||
108615fc | 214 | if(fVolume[volumeIndex].first == NULL) |
215 | fVolume[volumeIndex].first = (void *)thisHit; | |
216 | else | |
355debe1 | 217 | ((AliL3ConfMapPoint *)fVolume[volumeIndex].last)->nextVolumeHit=thisHit; |
108615fc | 218 | fVolume[volumeIndex].last = (void *)thisHit; |
219 | ||
220 | ||
221 | //set row pointers | |
355debe1 | 222 | if(fRow[(localrow-fRowMin)].first == NULL) |
223 | fRow[(localrow-fRowMin)].first = (void *)thisHit; | |
108615fc | 224 | else |
355debe1 | 225 | ((AliL3ConfMapPoint *)(fRow[(localrow-fRowMin)].last))->nextRowHit = thisHit; |
226 | fRow[(localrow-fRowMin)].last = (void *)thisHit; | |
227 | ||
228 | ||
108615fc | 229 | } |
230 | ||
e0e14b24 | 231 | if(fClustersUnused>0 && local_counter==0) |
232 | LOG(AliL3Log::kError,"AliL3ConfMapper::SetPointers","Parameters") | |
233 | <<AliL3Log::kDec<<"No points passed to track finder, hits out of range: " | |
234 | <<fEtaHitsOutOfRange+fPhiHitsOutOfRange<<ENDLOG; | |
355debe1 | 235 | |
236 | LOG(AliL3Log::kInformational,"AliL3ConfMapper::SetPointers","Setup") | |
237 | <<"Setup finished, hits out of range: "<<fEtaHitsOutOfRange+fPhiHitsOutOfRange | |
238 | <<" hits accepted "<<fClustersUnused<<ENDLOG; | |
108615fc | 239 | } |
240 | ||
241 | void AliL3ConfMapper::MainVertexTracking_a() | |
242 | { | |
243 | //Tracking with vertex constraint. | |
244 | ||
245 | if(!fParamSet) | |
246 | { | |
247 | LOG(AliL3Log::kError,"AliL3ConfMapper::MainVertexTracking","Parameters")<<AliL3Log::kDec<< | |
248 | "Tracking parameters not set!"<<ENDLOG; | |
249 | return; | |
250 | } | |
251 | ||
355debe1 | 252 | Double_t initCpuTime,cpuTime; |
253 | initCpuTime = CpuTime(); | |
108615fc | 254 | SetPointers(); |
255 | SetVertexConstraint(true); | |
355debe1 | 256 | cpuTime = CpuTime() - initCpuTime; |
257 | if(fBench) | |
258 | LOG(AliL3Log::kInformational,"AliL3ConfMapper::MainVertexTracking_a","Timing") | |
259 | <<AliL3Log::kDec<<"Setup finished in "<<cpuTime*1000<<" ms"<<ENDLOG; | |
260 | ||
108615fc | 261 | } |
262 | ||
263 | void AliL3ConfMapper::MainVertexTracking_b() | |
264 | { | |
265 | //Tracking with vertex constraint. | |
266 | ||
267 | if(!fParamSet) | |
268 | { | |
269 | LOG(AliL3Log::kError,"AliL3ConfMapper::MainVertexTracking","Parameters")<<AliL3Log::kDec<< | |
270 | "Tracking parameters not set!"<<ENDLOG; | |
271 | return; | |
272 | } | |
355debe1 | 273 | Double_t initCpuTime,cpuTime; |
274 | initCpuTime = CpuTime(); | |
275 | ||
108615fc | 276 | ClusterLoop(); |
355debe1 | 277 | |
278 | cpuTime = CpuTime() - initCpuTime; | |
279 | if(fBench) | |
280 | LOG(AliL3Log::kInformational,"AliL3ConfMapper::MainVertexTracking_b","Timing") | |
281 | <<AliL3Log::kDec<<"Main Tracking finished in "<<cpuTime*1000<<" ms"<<ENDLOG; | |
108615fc | 282 | } |
283 | ||
284 | void AliL3ConfMapper::MainVertexTracking() | |
285 | { | |
286 | //Tracking with vertex constraint. | |
287 | ||
288 | if(!fParamSet) | |
289 | { | |
290 | LOG(AliL3Log::kError,"AliL3ConfMapper::MainVertexTracking","Parameters")<<AliL3Log::kDec<< | |
291 | "Tracking parameters not set!"<<ENDLOG; | |
292 | return; | |
293 | } | |
294 | ||
295 | Double_t initCpuTime,cpuTime; | |
296 | initCpuTime = CpuTime(); | |
297 | ||
298 | SetPointers(); | |
299 | SetVertexConstraint(true); | |
300 | ||
301 | ClusterLoop(); | |
302 | ||
303 | cpuTime = CpuTime() - initCpuTime; | |
304 | if(fBench) | |
305 | LOG(AliL3Log::kInformational,"AliL3ConfMapper::MainVertexTracking","Timing")<<AliL3Log::kDec<< | |
306 | "Tracking finished in "<<cpuTime*1000<<" ms"<<ENDLOG; | |
355debe1 | 307 | |
108615fc | 308 | return; |
309 | } | |
310 | ||
311 | void AliL3ConfMapper::NonVertexTracking() | |
312 | { | |
313 | //Tracking with no vertex constraint. This should be called after doing MainVertexTracking, | |
314 | //in order to do tracking on the remaining clusters. | |
315 | //The conformal mapping is now done with respect to the first cluster | |
316 | //assosciated with this track. | |
317 | ||
318 | SetVertexConstraint(false); | |
319 | ClusterLoop(); | |
320 | LOG(AliL3Log::kInformational,"AliL3ConfMapper::NonVertexTracking","ntracks")<<AliL3Log::kDec<< | |
266829be | 321 | "Number of nonvertex tracks found: "<<(nTracks-fMainVertexTracks)<<ENDLOG; |
108615fc | 322 | return; |
323 | } | |
324 | ||
325 | void AliL3ConfMapper::MainVertexSettings(Int_t trackletlength, Int_t tracklength, | |
326 | Int_t rowscopetracklet, Int_t rowscopetrack, | |
327 | Double_t maxphi,Double_t maxeta) | |
328 | { | |
329 | //Settings for main vertex tracking. The cuts are: | |
330 | //TrackletLength: #hits on segment, before trying to build a track | |
331 | //TrackLength: Minimum hits on a track | |
332 | //RowScopeTracklet: Row search range for segments | |
333 | //RowScopeTrack: Row search range for tracks | |
334 | ||
335 | SetTrackletLength(trackletlength,(Bool_t)true); | |
336 | SetRowScopeTracklet(rowscopetracklet, (Bool_t) true); | |
337 | SetRowScopeTrack(rowscopetrack, (Bool_t) true); | |
338 | SetMinPoints(tracklength,(Bool_t)true); | |
339 | fMaxPhi=maxphi; | |
340 | fMaxEta=maxeta; | |
108615fc | 341 | } |
342 | ||
343 | void AliL3ConfMapper::NonVertexSettings(Int_t trackletlength, Int_t tracklength, | |
344 | Int_t rowscopetracklet, Int_t rowscopetrack) | |
345 | { | |
346 | SetTrackletLength(trackletlength,(Bool_t)false); | |
347 | SetRowScopeTracklet(rowscopetracklet, (Bool_t)false); | |
348 | SetRowScopeTrack(rowscopetrack, (Bool_t)false); | |
349 | SetMinPoints(tracklength,(Bool_t)false); | |
350 | } | |
351 | ||
266829be | 352 | void AliL3ConfMapper::SetTrackCuts(Double_t hitChi2Cut, Double_t goodHitChi2, Double_t trackChi2Cut,Int_t maxdist, |
353 | Bool_t vertexconstraint) | |
108615fc | 354 | { |
355 | //Settings for tracks. The cuts are: | |
356 | //HitChi2Cut: Maximum hit chi2 | |
357 | //goodHitChi2: Chi2 to stop look for next hit | |
358 | //trackChi2Cut: Maximum track chi2 | |
359 | //maxdist: Maximum distance between two clusters when forming segments | |
266829be | 360 | |
361 | SetHitChi2Cut(hitChi2Cut,vertexconstraint); | |
362 | SetGoodHitChi2(goodHitChi2,vertexconstraint); | |
363 | SetTrackChi2Cut(trackChi2Cut,vertexconstraint); | |
364 | SetMaxDist(maxdist,vertexconstraint); | |
108615fc | 365 | } |
366 | ||
367 | void AliL3ConfMapper::SetTrackletCuts(Double_t maxangle,Double_t goodDist, Bool_t vertex_constraint) | |
368 | { | |
369 | //Sets cuts of tracklets. Right now this is only: | |
370 | //maxangle: Maximum angle when forming segments (if trackletlength > 2) | |
371 | ||
372 | fGoodDist=goodDist; | |
373 | SetMaxAngleTracklet(maxangle, vertex_constraint); | |
374 | } | |
375 | ||
376 | void AliL3ConfMapper::ClusterLoop() | |
377 | { | |
378 | //Loop over hits, starting at outermost padrow, and trying to build segments. | |
379 | ||
380 | Int_t row_segm,lastrow = fRowMin + fMinPoints[fVertexConstraint]; | |
381 | AliL3ConfMapPoint *hit; | |
382 | ||
383 | //Loop over rows, and try to create tracks from the hits. | |
384 | //Starts at the outermost row, and loops as long as a track can be build, due to length. | |
385 | ||
386 | for(row_segm = fRowMax; row_segm >= lastrow; row_segm--) | |
387 | { | |
355debe1 | 388 | if(fRow[(row_segm-fRowMin)].first && ((AliL3ConfMapPoint*)fRow[(row_segm-fRowMin)].first)->GetPadRow() < fRowMin + 1) |
108615fc | 389 | break; |
355debe1 | 390 | for(hit = (AliL3ConfMapPoint*)fRow[(row_segm-fRowMin)].first; hit!=0; hit=hit->nextRowHit) |
108615fc | 391 | { |
392 | if(hit->GetUsage() == true) | |
393 | continue; | |
394 | else | |
395 | CreateTrack(hit); | |
396 | } | |
397 | } | |
398 | ||
399 | return; | |
400 | } | |
401 | ||
402 | ||
403 | void AliL3ConfMapper::CreateTrack(AliL3ConfMapPoint *hit) | |
404 | { | |
405 | //Tries to create a track from the initial hit given by ClusterLoop() | |
406 | ||
407 | AliL3ConfMapPoint *closest_hit = NULL; | |
408 | AliL3ConfMapTrack *track = NULL; | |
409 | ||
410 | Int_t point; | |
411 | Int_t tracks = nTracks; | |
412 | nTracks++; | |
413 | ||
414 | track = (AliL3ConfMapTrack*)fTrack->NextTrack(); | |
415 | ||
416 | //reset hit parameters: | |
417 | track->Reset(); | |
418 | ||
419 | UInt_t *trackhitnumber = track->GetHitNumbers(); | |
420 | ||
421 | //set conformal coordinates if we are looking for non vertex tracks | |
422 | if(!fVertexConstraint) | |
423 | { | |
424 | hit->SetAllCoord(hit); | |
425 | } | |
426 | ||
427 | //fill fit parameters of initial track: | |
428 | track->UpdateParam(hit); //here the number of hits is incremented. | |
429 | trackhitnumber[track->GetNumberOfPoints()-1] = hit->GetHitNumber(); | |
430 | ||
431 | Double_t dx,dy; | |
432 | //create tracklets: | |
433 | ||
434 | for(point=1; point<fTrackletLength[fVertexConstraint]; point++) | |
435 | { | |
436 | if((closest_hit = GetNextNeighbor(hit))) | |
437 | {//closest hit exist | |
438 | ||
439 | // Calculate track length in sz plane | |
440 | dx = ((AliL3ConfMapPoint*)closest_hit)->GetX() - ((AliL3ConfMapPoint*)hit)->GetX(); | |
441 | dy = ((AliL3ConfMapPoint*)closest_hit)->GetY() - ((AliL3ConfMapPoint*)hit)->GetY(); | |
442 | //track->fLength += (Double_t)sqrt ( dx * dx + dy * dy ) ; | |
443 | Double_t length = track->GetLength()+(Double_t)sqrt ( dx * dx + dy * dy ); | |
444 | track->SetLength(length); | |
445 | ||
446 | //closest_hit->SetS(track->fLength); | |
447 | closest_hit->SetS(track->GetLength()); | |
448 | ||
449 | //update fit parameters | |
450 | track->UpdateParam(closest_hit); | |
451 | trackhitnumber[track->GetNumberOfPoints()-1] = closest_hit->GetHitNumber(); | |
452 | ||
453 | hit = closest_hit; | |
454 | } | |
455 | else | |
456 | { | |
457 | //closest hit does not exist: | |
458 | track->DeleteCandidate(); | |
459 | fTrack->RemoveLast(); | |
460 | nTracks--; | |
461 | point = fTrackletLength[fVertexConstraint]; | |
462 | } | |
463 | } | |
464 | ||
465 | //tracklet is long enough to be extended to a track | |
466 | if(track->GetNumberOfPoints() == fTrackletLength[fVertexConstraint]) | |
467 | { | |
468 | ||
469 | track->SetProperties(true); | |
470 | ||
471 | if(TrackletAngle(track) > fMaxAngleTracklet[fVertexConstraint]) | |
472 | {//proof if the first points seem to be a beginning of a track | |
108615fc | 473 | track->SetProperties(false); |
474 | track->DeleteCandidate(); | |
475 | fTrack->RemoveLast(); | |
476 | nTracks--; | |
477 | } | |
478 | ||
479 | else//good tracklet ->proceed, follow the trackfit | |
480 | { | |
481 | tracks++; | |
482 | ||
483 | //define variables to keep the total chi: | |
484 | Double_t xyChi2 = track->fChiSq[0]; | |
485 | Double_t szChi2 = track->fChiSq[1]; | |
486 | ||
487 | for(point = fTrackletLength[fVertexConstraint]; point <= fNumRowSegment; point++) | |
488 | { | |
266829be | 489 | track->fChiSq[0] = fHitChi2Cut[fVertexConstraint]; |
108615fc | 490 | closest_hit = GetNextNeighbor((AliL3ConfMapPoint*)track->lastHit,track); |
491 | ||
492 | if(closest_hit) | |
493 | { | |
494 | ||
495 | //keep total chi: | |
496 | Double_t lxyChi2 = track->fChiSq[0]-track->fChiSq[1]; | |
497 | xyChi2 += lxyChi2; | |
498 | closest_hit->xyChi2 = lxyChi2; | |
499 | ||
500 | //update track length: | |
501 | //track->fLength = closest_hit->GetS(); | |
502 | track->SetLength(closest_hit->GetS()); | |
503 | szChi2 += track->fChiSq[1]; | |
504 | closest_hit->szChi2 = track->fChiSq[1]; | |
505 | ||
506 | track->UpdateParam(closest_hit); | |
507 | trackhitnumber[track->GetNumberOfPoints()-1] = closest_hit->GetHitNumber(); | |
508 | ||
509 | //add closest hit to track | |
510 | closest_hit->SetUsage(true); | |
511 | closest_hit->SetTrackNumber(tracks-1); | |
28a650e7 | 512 | |
108615fc | 513 | }//closest_hit |
28a650e7 | 514 | |
108615fc | 515 | else |
516 | { | |
517 | //closest hit does not exist | |
518 | point = fNumRowSegment; //continue with next hit in segment | |
519 | }//else | |
520 | ||
521 | }//create tracks | |
522 | ||
523 | //store track chi2: | |
524 | track->fChiSq[0] = xyChi2; | |
525 | track->fChiSq[1] = szChi2; | |
526 | Double_t normalized_chi2 = (track->fChiSq[0]+track->fChiSq[1])/track->GetNumberOfPoints(); | |
527 | ||
528 | //remove tracks with not enough points already now | |
266829be | 529 | if(track->GetNumberOfPoints() < fMinPoints[fVertexConstraint] || normalized_chi2 > fTrackChi2Cut[fVertexConstraint]) |
108615fc | 530 | { |
531 | track->SetProperties(false); | |
532 | nTracks--; | |
533 | track->DeleteCandidate(); | |
534 | fTrack->RemoveLast(); | |
535 | tracks--; | |
536 | } | |
537 | ||
538 | else | |
539 | { | |
540 | fClustersUnused -= track->GetNumberOfPoints(); | |
541 | track->ComesFromMainVertex(fVertexConstraint); | |
542 | //mark track as main vertex track or not | |
543 | track->SetSector(2); //only needed for testing purposes. | |
544 | track->SetRowRange(fRowMin,fRowMax); | |
545 | ||
546 | if(fVertexConstraint) | |
547 | fMainVertexTracks++; | |
548 | } | |
549 | ||
550 | }//good tracklet | |
551 | ||
552 | } | |
553 | ||
554 | return; | |
555 | } | |
556 | ||
557 | AliL3ConfMapPoint *AliL3ConfMapper::GetNextNeighbor(AliL3ConfMapPoint *start_hit, | |
558 | AliL3ConfMapTrack *track) | |
559 | { | |
560 | //When forming segments: Finds closest hit to input hit | |
561 | //When forming tracks: Find closest hit to track fit. | |
562 | ||
266829be | 563 | Double_t dist,closest_dist = fMaxDist[fVertexConstraint]; |
108615fc | 564 | |
565 | AliL3ConfMapPoint *hit = NULL; | |
566 | AliL3ConfMapPoint *closest_hit = NULL; | |
567 | ||
568 | Int_t sub_row_segm; | |
569 | Int_t sub_phi_segm; | |
570 | Int_t sub_eta_segm; | |
571 | Int_t volumeIndex; | |
572 | Int_t test_hit; | |
573 | ||
574 | Int_t max_row = start_hit->GetPadRow()-1; | |
575 | Int_t min_row; | |
576 | ||
577 | if(track) //finding hit close to trackfit | |
578 | { | |
579 | min_row = start_hit->GetPadRow()-fRowScopeTrack[fVertexConstraint]; | |
580 | } | |
581 | else | |
582 | { | |
583 | min_row = start_hit->GetPadRow()-fRowScopeTracklet[fVertexConstraint]; | |
584 | } | |
585 | ||
586 | //make a smart loop | |
587 | Int_t loop_eta[9] = {0,0,0,-1,-1,-1,1,1,1}; | |
588 | Int_t loop_phi[9] = {0,-1,1,0,-1,1,0,-1,1}; | |
589 | ||
590 | if(min_row < fRowMin) | |
591 | min_row = fRowMin; | |
592 | if(max_row < fRowMin) | |
593 | return 0; //reached the last padrow under consideration | |
594 | ||
595 | else | |
596 | { | |
597 | //loop over sub rows | |
598 | for(sub_row_segm=max_row; sub_row_segm>=min_row; sub_row_segm--) | |
599 | { | |
600 | //loop over subsegments, in the order defined above. | |
601 | for(Int_t i=0; i<9; i++) | |
602 | { | |
603 | sub_phi_segm = start_hit->phiIndex + loop_phi[i]; | |
604 | ||
605 | if(sub_phi_segm<0) | |
606 | sub_phi_segm += fNumPhiSegment; | |
607 | ||
608 | else if(sub_phi_segm >=fNumPhiSegment) | |
609 | sub_phi_segm -= fNumPhiSegment; | |
610 | ||
611 | //loop over sub eta segments | |
612 | ||
613 | sub_eta_segm = start_hit->etaIndex + loop_eta[i]; | |
614 | ||
615 | if(sub_eta_segm < 0 || sub_eta_segm >=fNumEtaSegment) | |
616 | continue;//segment exceeds bounds->skip it | |
617 | ||
618 | //loop over hits in this sub segment: | |
355debe1 | 619 | volumeIndex= (sub_row_segm-fRowMin)*fNumPhiEtaSegmentPlusOne + |
108615fc | 620 | sub_phi_segm*fNumEtaSegmentPlusOne + sub_eta_segm; |
621 | ||
622 | if(volumeIndex<0) | |
623 | {//debugging | |
624 | LOG(AliL3Log::kError,"AliL3ConfMapper::GetNextNeighbor","Memory")<<AliL3Log::kDec<< | |
625 | "VolumeIndex error "<<volumeIndex<<ENDLOG; | |
626 | } | |
627 | ||
628 | for(hit = (AliL3ConfMapPoint*)fVolume[volumeIndex].first; | |
629 | hit!=0; hit = hit->nextVolumeHit) | |
630 | { | |
631 | ||
632 | if(!hit->GetUsage()) | |
633 | {//hit was not used before | |
634 | ||
635 | //set conformal mapping if looking for nonvertex tracks: | |
636 | if(!fVertexConstraint) | |
637 | { | |
638 | hit->SetAllCoord(start_hit); | |
639 | } | |
640 | ||
641 | if(track)//track search - look for nearest neighbor to extrapolated track | |
642 | { | |
643 | if(!VerifyRange(start_hit,hit)) | |
644 | continue; | |
645 | ||
646 | test_hit = EvaluateHit(start_hit,hit,track); | |
647 | ||
648 | if(test_hit == 0)//chi2 not good enough, keep looking | |
649 | continue; | |
650 | else if(test_hit==2)//chi2 good enough, return it | |
651 | return hit; | |
652 | else | |
653 | closest_hit = hit;//chi2 acceptable, but keep looking | |
654 | ||
655 | }//track search | |
656 | ||
657 | else //tracklet search, look for nearest neighbor | |
658 | { | |
659 | ||
660 | if((dist=CalcDistance(start_hit,hit)) < closest_dist) | |
661 | { | |
662 | if(!VerifyRange(start_hit,hit)) | |
663 | continue; | |
664 | closest_dist = dist; | |
665 | closest_hit = hit; | |
666 | ||
667 | //if this hit is good enough, return it: | |
668 | if(closest_dist < fGoodDist) | |
669 | return closest_hit; | |
670 | } | |
671 | else | |
672 | continue;//sub hit was farther away than a hit before | |
673 | ||
674 | }//tracklet search | |
675 | ||
676 | }//hit not used before | |
677 | ||
678 | else continue; //sub hit was used before | |
679 | ||
680 | }//loop over hits in sub segment | |
681 | ||
682 | }//loop over sub segments | |
683 | ||
684 | }//loop over subrows | |
685 | ||
686 | }//else | |
687 | ||
688 | //closest hit found: | |
689 | if(closest_hit)// && closest_dist < mMaxDist) | |
690 | return closest_hit; | |
691 | else | |
692 | return 0; | |
693 | } | |
694 | ||
695 | Int_t AliL3ConfMapper::EvaluateHit(AliL3ConfMapPoint *start_hit,AliL3ConfMapPoint *hit,AliL3ConfMapTrack *track) | |
696 | { | |
697 | //Check if space point gives a fit with acceptable chi2. | |
698 | ||
699 | Double_t temp,dxy,lchi2,dx,dy,slocal,dsz,lszChi2; | |
700 | temp = (track->a2Xy*hit->GetXprime()-hit->GetYprime()+track->a1Xy); | |
701 | dxy = temp*temp/(track->a2Xy*track->a2Xy + 1.); | |
702 | ||
703 | //Calculate chi2 | |
704 | lchi2 = (dxy*hit->GetXYWeight()); | |
705 | ||
706 | if(lchi2 > track->fChiSq[0])//chi2 was worse than before. | |
707 | return 0; | |
708 | ||
709 | //calculate s and the distance hit-line | |
710 | dx = start_hit->GetX()-hit->GetX(); | |
711 | dy = start_hit->GetY()-hit->GetY(); | |
712 | //slocal = track->fLength+sqrt(dx*dx+dy*dy); | |
713 | slocal = track->GetLength()+sqrt(dx*dx+dy*dy); | |
714 | ||
715 | temp = (track->a2Sz*slocal-hit->GetZ()+track->a1Sz); | |
716 | dsz = temp*temp/(track->a2Sz*track->a2Sz+1); | |
717 | ||
718 | //calculate chi2 | |
719 | lszChi2 = dsz*hit->GetZWeight(); | |
720 | lchi2 += lszChi2; | |
721 | ||
722 | ||
723 | //check whether chi2 is better than previous one: | |
724 | if(lchi2 < track->fChiSq[0]) | |
725 | { | |
726 | track->fChiSq[0] = lchi2; | |
727 | track->fChiSq[1] = lszChi2; | |
728 | ||
729 | hit->SetS(slocal); | |
730 | ||
731 | //if chi2 good enough, stop here: | |
266829be | 732 | if(lchi2 < fGoodHitChi2[fVertexConstraint]) |
108615fc | 733 | return 2; |
734 | ||
735 | return 1; | |
736 | } | |
737 | ||
738 | return 0; | |
739 | ||
740 | } | |
741 | ||
742 | Double_t AliL3ConfMapper::CalcDistance(const AliL3ConfMapPoint *hit1,const AliL3ConfMapPoint *hit2) const | |
743 | { | |
744 | //Return distance between two clusters, defined by Pablo | |
745 | ||
746 | Double_t phi_diff = fabs( hit1->GetPhi() - hit2->GetPhi() ); | |
747 | if (phi_diff > pi) phi_diff = twopi - phi_diff; | |
748 | ||
749 | return todeg*fabs(hit1->GetPadRow() - hit2->GetPadRow()) * (phi_diff + fabs( hit1->GetEta() - hit2->GetEta() )); | |
750 | } | |
751 | ||
752 | Bool_t AliL3ConfMapper::VerifyRange(const AliL3ConfMapPoint *hit1,const AliL3ConfMapPoint *hit2) const | |
753 | { | |
754 | //Check if the hit are within reasonable range in phi and eta | |
755 | Double_t dphi,deta;//maxphi=0.1,maxeta=0.1; | |
756 | dphi = fabs(hit1->GetPhi() - hit2->GetPhi()); | |
757 | if(dphi > pi) dphi = fabs(twopi - dphi); | |
758 | if(dphi > fMaxPhi) return false; | |
759 | ||
760 | deta = fabs(hit1->GetEta() - hit2->GetEta()); | |
761 | if(deta > fMaxEta) return false; | |
762 | ||
763 | return true; | |
764 | ||
765 | } | |
766 | ||
767 | Double_t AliL3ConfMapper::TrackletAngle(const AliL3ConfMapTrack *track,Int_t n) const | |
768 | { | |
769 | // Returns the angle 'between' the last three points (started at point number n) on this track. | |
770 | ||
771 | return 0; | |
772 | /* | |
773 | Double_t x1[2]; | |
774 | Double_t x2[2]; | |
775 | Double_t angle1,angle2; | |
776 | TObjArray *hits = track->GetHits(); | |
777 | ||
778 | if (n > track->GetNumberOfPoints()) { | |
779 | n = track->GetNumberOfPoints(); | |
780 | } | |
781 | ||
782 | if (n<3) | |
783 | return 0; | |
784 | ||
785 | ||
786 | x1[0] = ((AliL3ConfMapPoint *)hits->At(n-2))->GetX() - ((AliL3ConfMapPoint *)hits->At(n-3))->GetX(); | |
787 | x1[1] = ((AliL3ConfMapPoint *)hits->At(n-2))->GetY() - ((AliL3ConfMapPoint *)hits->At(n-3))->GetY(); | |
788 | ||
789 | x2[0] = ((AliL3ConfMapPoint *)hits->At(n-1))->GetX() - ((AliL3ConfMapPoint *)hits->At(n-2))->GetX(); | |
790 | x2[1] = ((AliL3ConfMapPoint *)hits->At(n-1))->GetY() - ((AliL3ConfMapPoint *)hits->At(n-2))->GetY(); | |
791 | ||
792 | angle1 = atan2(x1[1],x1[0]); | |
793 | angle2 = atan2(x2[1],x1[0]); | |
794 | return fabs(angle1-angle2); | |
795 | */ | |
796 | } | |
797 | ||
798 | Int_t AliL3ConfMapper::FillTracks() | |
799 | { | |
800 | //Fill track parameters. Which basically means do a fit of helix in real space, | |
801 | //which should be done in order to get nice tracks. | |
802 | ||
803 | Int_t num_of_tracks = nTracks; | |
804 | LOG(AliL3Log::kInformational,"AliL3ConfMapper::FillTracks","nTracks")<<AliL3Log::kDec<< | |
805 | "Number of found tracks: "<<nTracks<<ENDLOG; | |
806 | ||
807 | if(nTracks == 0) | |
808 | { | |
809 | LOG(AliL3Log::kError,"AliL3ConfMapper::FillTracks","nTracks")<<AliL3Log::kDec<< | |
810 | "No tracks found!!"<<ENDLOG; | |
811 | return 0; | |
812 | } | |
813 | ||
814 | // fTrack->Sort(); | |
815 | for(int i=0; i<num_of_tracks; i++) | |
816 | { | |
817 | AliL3ConfMapTrack *track = (AliL3ConfMapTrack*)fTrack->GetTrack(i); | |
818 | track->Fill(fVertex,fMaxDca); | |
819 | } | |
820 | return 1; | |
821 | ||
822 | } | |
823 | ||
824 | Double_t AliL3ConfMapper::CpuTime() | |
825 | { | |
826 | //Return the Cputime in seconds. | |
355debe1 | 827 | struct timeval tv; |
828 | gettimeofday( &tv, NULL ); | |
829 | return tv.tv_sec+(((Double_t)tv.tv_usec)/1000000.); | |
830 | //return (Double_t)(clock()) / CLOCKS_PER_SEC; | |
108615fc | 831 | } |