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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 | ||
355debe1 | 12 | #include "AliL3Logging.h" |
108615fc | 13 | #include "AliL3Vertex.h" |
14 | #include "AliL3ConfMapTrack.h" | |
15 | #include "AliL3ConfMapPoint.h" | |
16 | #include "AliL3TrackArray.h" | |
ef79795d | 17 | #include "AliL3Transform.h" |
108615fc | 18 | |
b661165c | 19 | //_____________________________________________________________ |
20 | // AliL3ConfMapper | |
108615fc | 21 | // |
b661165c | 22 | // Conformal mapping base class |
108615fc | 23 | // |
108615fc | 24 | ClassImp(AliL3ConfMapper) |
25 | ||
26 | Double_t AliL3ConfMapper::pi=3.14159265358979323846; | |
27 | Double_t AliL3ConfMapper::twopi=2*pi; | |
28 | Double_t AliL3ConfMapper::todeg=180./pi; | |
29 | ||
30 | AliL3ConfMapper::AliL3ConfMapper() | |
31 | { | |
32 | //Default constructor | |
33 | fVertex = NULL; | |
34 | fTrack = NULL; | |
35 | fHit = NULL; | |
108615fc | 36 | fVolume = NULL; |
37 | fRow = NULL; | |
38 | fBench = (Bool_t)true; | |
39 | fParamSet = (Bool_t)false; | |
40 | fVertexConstraint = (Bool_t)true; | |
266829be | 41 | |
108615fc | 42 | } |
43 | ||
44 | ||
45 | AliL3ConfMapper::~AliL3ConfMapper() | |
46 | { | |
47 | // Destructor. | |
48 | ||
49 | if(fVolume) { | |
50 | delete [] fVolume; | |
51 | } | |
52 | if(fRow) { | |
53 | delete [] fRow; | |
54 | } | |
108615fc | 55 | if(fHit) { |
56 | delete [] fHit; | |
57 | } | |
58 | if(fTrack) { | |
59 | delete fTrack; | |
60 | } | |
61 | ||
62 | } | |
355debe1 | 63 | |
64 | void AliL3ConfMapper::InitVolumes() | |
65 | { | |
66 | //Data organization. | |
67 | //Allocate volumes, set conformal coordinates and pointers. | |
68 | ||
69 | //Should be done after setting the track parameters | |
70 | ||
71 | fNumRowSegmentPlusOne = 176;//NumRows[0]; //Maximum 32. | |
72 | fNumPhiSegmentPlusOne = fNumPhiSegment+1; | |
73 | fNumEtaSegmentPlusOne = fNumEtaSegment+1; | |
74 | fNumPhiEtaSegmentPlusOne = fNumPhiSegmentPlusOne*fNumEtaSegmentPlusOne; | |
75 | fBounds = fNumRowSegmentPlusOne * fNumPhiSegmentPlusOne * fNumEtaSegmentPlusOne; | |
76 | ||
77 | //Allocate volumes: | |
78 | if(fVolume) delete [] fVolume; | |
79 | if(fRow) delete [] fRow; | |
80 | ||
81 | LOG(AliL3Log::kInformational,"AliL3ConfMapper::InitVolumes","Memory")<<AliL3Log::kDec<< | |
82 | "Allocating "<<fBounds*sizeof(AliL3ConfMapContainer)<<" Bytes to fVolume"<<ENDLOG; | |
83 | LOG(AliL3Log::kInformational,"AliL3ConfMapper::InitVolumes","Memory")<<AliL3Log::kDec<< | |
84 | "Allocating "<<fNumRowSegmentPlusOne*sizeof(AliL3ConfMapContainer)<<" Bytes to fRow"<<ENDLOG; | |
85 | ||
86 | fVolume = new AliL3ConfMapContainer[fBounds]; | |
87 | fRow = new AliL3ConfMapContainer[fNumRowSegmentPlusOne]; | |
88 | ||
89 | memset(fVolume,0,fBounds*sizeof(AliL3ConfMapContainer)); | |
90 | memset(fRow,0,fNumRowSegmentPlusOne*sizeof(AliL3ConfMapContainer)); | |
91 | ||
494fad94 | 92 | Int_t max_num_of_tracks = 1000; |
93 | Int_t max_num_of_hits = 50000; | |
355debe1 | 94 | |
95 | if(fHit) | |
96 | delete [] fHit; | |
97 | if(fTrack) | |
98 | delete fTrack; | |
99 | ||
100 | fHit = new AliL3ConfMapPoint[max_num_of_hits]; | |
101 | fTrack = new AliL3TrackArray("AliL3ConfMapTrack",max_num_of_tracks); | |
102 | } | |
108615fc | 103 | |
104 | void AliL3ConfMapper::InitSector(Int_t sector,Int_t *rowrange,Float_t *etarange) | |
105 | { | |
106 | //Initialize tracker for tracking in a given sector. | |
107 | //Resets track and hit arrays. | |
108 | //Here it is also possible to specify a subsector, by defining | |
109 | //rowrange[0]=innermost row; | |
110 | //rowrange[1]=outermostrow; | |
111 | //Finally you can specify etaslices to save time (assuming a good seed from TRD...) | |
355debe1 | 112 | |
108615fc | 113 | //Define tracking area: |
114 | if(rowrange) | |
115 | { | |
116 | fRowMin = rowrange[0]; | |
117 | fRowMax = rowrange[1]; | |
118 | } | |
119 | else //complete sector | |
120 | { | |
121 | fRowMin = 0; | |
ae97a0b9 | 122 | fRowMax = 175; |
108615fc | 123 | } |
124 | if(etarange) | |
125 | { | |
126 | fEtaMin = etarange[0]; | |
127 | fEtaMax = etarange[1]; | |
128 | } | |
129 | else | |
130 | { | |
131 | fEtaMin = 0; | |
494fad94 | 132 | //fEtaMax = sector < 18 ? 1 : -1; |
133 | fEtaMax = sector < 18 ? 0.9 : -0.9; | |
108615fc | 134 | } |
135 | ||
136 | //Set the angles to sector 2: | |
137 | fPhiMin = -1.*10/todeg;//fParam->GetAngle(sector) - 10/todeg; | |
138 | fPhiMax = 10/todeg;//fParam->GetAngle(sector) + 10/todeg; | |
139 | ||
108615fc | 140 | nTracks=0; |
266829be | 141 | fMainVertexTracks = 0; |
108615fc | 142 | fClustersUnused = 0; |
143 | ||
144 | fNumRowSegment = fRowMax - fRowMin; //number of rows to be considered by tracker | |
266829be | 145 | LOG(AliL3Log::kInformational,"AliL3ConfMapper::InitSector","B-field") |
eeddc64d | 146 | <<"Tracker initializing with a magnetic field of "<<AliL3Transform::GetBField()<<ENDLOG; |
355debe1 | 147 | |
148 | fTrack->Reset(); | |
108615fc | 149 | } |
150 | ||
151 | ||
152 | ||
153 | Bool_t AliL3ConfMapper::ReadHits(UInt_t count, AliL3SpacePointData* hits ) | |
154 | { | |
108615fc | 155 | Int_t nhit=(Int_t)count; |
a9d69a4d | 156 | for (Int_t i=0;i<nhit;i++) |
355debe1 | 157 | { |
158 | fHit[i].Reset(); | |
159 | fHit[i].ReadHits(&(hits[i])); | |
160 | } | |
108615fc | 161 | fClustersUnused += nhit; |
355debe1 | 162 | LOG(AliL3Log::kInformational,"AliL3ConfMapper::ReadHits","#hits") |
163 | <<AliL3Log::kDec<<"hit_counter: "<<nhit<<" count: "<<count<<ENDLOG; | |
164 | ||
108615fc | 165 | return true; |
166 | } | |
167 | ||
168 | ||
169 | void AliL3ConfMapper::SetPointers() | |
170 | { | |
108615fc | 171 | |
355debe1 | 172 | //Reset detector volumes |
108615fc | 173 | memset(fVolume,0,fBounds*sizeof(AliL3ConfMapContainer)); |
174 | memset(fRow,0,fNumRowSegmentPlusOne*sizeof(AliL3ConfMapContainer)); | |
175 | ||
176 | Float_t phiSlice = (fPhiMax-fPhiMin)/fNumPhiSegment; | |
177 | Float_t etaSlice = (fEtaMax-fEtaMin)/fNumEtaSegment; | |
355debe1 | 178 | |
108615fc | 179 | Int_t volumeIndex; |
e0e14b24 | 180 | Int_t local_counter=0; |
108615fc | 181 | for(Int_t j=0; j<fClustersUnused; j++) |
182 | { | |
183 | ||
184 | //AliL3ConfMapPoint *thisHit = (AliL3ConfMapPoint*)fHit->At(j); | |
a9d69a4d | 185 | AliL3ConfMapPoint *thisHit = &(fHit[j]); |
108615fc | 186 | |
187 | thisHit->Setup(fVertex); | |
188 | ||
189 | Int_t localrow = thisHit->GetPadRow(); | |
190 | ||
108615fc | 191 | if(localrow < fRowMin || localrow > fRowMax) |
192 | continue; | |
108615fc | 193 | |
194 | //Get indexes: | |
195 | thisHit->phiIndex=(Int_t)((thisHit->GetPhi()-fPhiMin)/phiSlice +1); | |
196 | ||
197 | if(thisHit->phiIndex<1 || thisHit->phiIndex>fNumPhiSegment) | |
198 | { | |
199 | fPhiHitsOutOfRange++; | |
200 | continue; | |
201 | } | |
202 | ||
203 | thisHit->etaIndex=(Int_t)((thisHit->GetEta()-fEtaMin)/etaSlice + 1); | |
204 | if(thisHit->etaIndex<1 || thisHit->etaIndex>fNumEtaSegment) | |
205 | { | |
206 | fEtaHitsOutOfRange++; | |
207 | continue; | |
208 | } | |
e0e14b24 | 209 | local_counter++; |
355debe1 | 210 | |
211 | volumeIndex = (localrow-fRowMin)*fNumPhiEtaSegmentPlusOne+thisHit->phiIndex*fNumEtaSegmentPlusOne+thisHit->etaIndex; | |
212 | ||
108615fc | 213 | if(fVolume[volumeIndex].first == NULL) |
214 | fVolume[volumeIndex].first = (void *)thisHit; | |
215 | else | |
355debe1 | 216 | ((AliL3ConfMapPoint *)fVolume[volumeIndex].last)->nextVolumeHit=thisHit; |
108615fc | 217 | fVolume[volumeIndex].last = (void *)thisHit; |
218 | ||
219 | ||
220 | //set row pointers | |
355debe1 | 221 | if(fRow[(localrow-fRowMin)].first == NULL) |
222 | fRow[(localrow-fRowMin)].first = (void *)thisHit; | |
108615fc | 223 | else |
355debe1 | 224 | ((AliL3ConfMapPoint *)(fRow[(localrow-fRowMin)].last))->nextRowHit = thisHit; |
225 | fRow[(localrow-fRowMin)].last = (void *)thisHit; | |
226 | ||
227 | ||
108615fc | 228 | } |
229 | ||
e0e14b24 | 230 | if(fClustersUnused>0 && local_counter==0) |
231 | LOG(AliL3Log::kError,"AliL3ConfMapper::SetPointers","Parameters") | |
232 | <<AliL3Log::kDec<<"No points passed to track finder, hits out of range: " | |
233 | <<fEtaHitsOutOfRange+fPhiHitsOutOfRange<<ENDLOG; | |
355debe1 | 234 | |
235 | LOG(AliL3Log::kInformational,"AliL3ConfMapper::SetPointers","Setup") | |
236 | <<"Setup finished, hits out of range: "<<fEtaHitsOutOfRange+fPhiHitsOutOfRange | |
237 | <<" hits accepted "<<fClustersUnused<<ENDLOG; | |
108615fc | 238 | } |
239 | ||
240 | void AliL3ConfMapper::MainVertexTracking_a() | |
241 | { | |
242 | //Tracking with vertex constraint. | |
243 | ||
244 | if(!fParamSet) | |
245 | { | |
246 | LOG(AliL3Log::kError,"AliL3ConfMapper::MainVertexTracking","Parameters")<<AliL3Log::kDec<< | |
247 | "Tracking parameters not set!"<<ENDLOG; | |
248 | return; | |
249 | } | |
250 | ||
355debe1 | 251 | Double_t initCpuTime,cpuTime; |
252 | initCpuTime = CpuTime(); | |
108615fc | 253 | SetPointers(); |
254 | SetVertexConstraint(true); | |
355debe1 | 255 | cpuTime = CpuTime() - initCpuTime; |
256 | if(fBench) | |
257 | LOG(AliL3Log::kInformational,"AliL3ConfMapper::MainVertexTracking_a","Timing") | |
258 | <<AliL3Log::kDec<<"Setup finished in "<<cpuTime*1000<<" ms"<<ENDLOG; | |
259 | ||
108615fc | 260 | } |
261 | ||
262 | void AliL3ConfMapper::MainVertexTracking_b() | |
263 | { | |
264 | //Tracking with vertex constraint. | |
265 | ||
266 | if(!fParamSet) | |
267 | { | |
268 | LOG(AliL3Log::kError,"AliL3ConfMapper::MainVertexTracking","Parameters")<<AliL3Log::kDec<< | |
269 | "Tracking parameters not set!"<<ENDLOG; | |
270 | return; | |
271 | } | |
355debe1 | 272 | Double_t initCpuTime,cpuTime; |
273 | initCpuTime = CpuTime(); | |
274 | ||
108615fc | 275 | ClusterLoop(); |
355debe1 | 276 | |
277 | cpuTime = CpuTime() - initCpuTime; | |
278 | if(fBench) | |
279 | LOG(AliL3Log::kInformational,"AliL3ConfMapper::MainVertexTracking_b","Timing") | |
280 | <<AliL3Log::kDec<<"Main Tracking finished in "<<cpuTime*1000<<" ms"<<ENDLOG; | |
108615fc | 281 | } |
282 | ||
283 | void AliL3ConfMapper::MainVertexTracking() | |
284 | { | |
285 | //Tracking with vertex constraint. | |
286 | ||
287 | if(!fParamSet) | |
288 | { | |
289 | LOG(AliL3Log::kError,"AliL3ConfMapper::MainVertexTracking","Parameters")<<AliL3Log::kDec<< | |
290 | "Tracking parameters not set!"<<ENDLOG; | |
291 | return; | |
292 | } | |
293 | ||
294 | Double_t initCpuTime,cpuTime; | |
295 | initCpuTime = CpuTime(); | |
296 | ||
297 | SetPointers(); | |
298 | SetVertexConstraint(true); | |
299 | ||
300 | ClusterLoop(); | |
301 | ||
302 | cpuTime = CpuTime() - initCpuTime; | |
303 | if(fBench) | |
304 | LOG(AliL3Log::kInformational,"AliL3ConfMapper::MainVertexTracking","Timing")<<AliL3Log::kDec<< | |
305 | "Tracking finished in "<<cpuTime*1000<<" ms"<<ENDLOG; | |
355debe1 | 306 | |
108615fc | 307 | return; |
308 | } | |
309 | ||
310 | void AliL3ConfMapper::NonVertexTracking() | |
311 | { | |
312 | //Tracking with no vertex constraint. This should be called after doing MainVertexTracking, | |
313 | //in order to do tracking on the remaining clusters. | |
314 | //The conformal mapping is now done with respect to the first cluster | |
315 | //assosciated with this track. | |
316 | ||
317 | SetVertexConstraint(false); | |
318 | ClusterLoop(); | |
319 | LOG(AliL3Log::kInformational,"AliL3ConfMapper::NonVertexTracking","ntracks")<<AliL3Log::kDec<< | |
266829be | 320 | "Number of nonvertex tracks found: "<<(nTracks-fMainVertexTracks)<<ENDLOG; |
108615fc | 321 | return; |
322 | } | |
323 | ||
324 | void AliL3ConfMapper::MainVertexSettings(Int_t trackletlength, Int_t tracklength, | |
325 | Int_t rowscopetracklet, Int_t rowscopetrack, | |
326 | Double_t maxphi,Double_t maxeta) | |
327 | { | |
328 | //Settings for main vertex tracking. The cuts are: | |
329 | //TrackletLength: #hits on segment, before trying to build a track | |
330 | //TrackLength: Minimum hits on a track | |
331 | //RowScopeTracklet: Row search range for segments | |
332 | //RowScopeTrack: Row search range for tracks | |
333 | ||
334 | SetTrackletLength(trackletlength,(Bool_t)true); | |
335 | SetRowScopeTracklet(rowscopetracklet, (Bool_t) true); | |
336 | SetRowScopeTrack(rowscopetrack, (Bool_t) true); | |
337 | SetMinPoints(tracklength,(Bool_t)true); | |
338 | fMaxPhi=maxphi; | |
339 | fMaxEta=maxeta; | |
108615fc | 340 | } |
341 | ||
342 | void AliL3ConfMapper::NonVertexSettings(Int_t trackletlength, Int_t tracklength, | |
343 | Int_t rowscopetracklet, Int_t rowscopetrack) | |
344 | { | |
345 | SetTrackletLength(trackletlength,(Bool_t)false); | |
346 | SetRowScopeTracklet(rowscopetracklet, (Bool_t)false); | |
347 | SetRowScopeTrack(rowscopetrack, (Bool_t)false); | |
348 | SetMinPoints(tracklength,(Bool_t)false); | |
349 | } | |
350 | ||
266829be | 351 | void AliL3ConfMapper::SetTrackCuts(Double_t hitChi2Cut, Double_t goodHitChi2, Double_t trackChi2Cut,Int_t maxdist, |
352 | Bool_t vertexconstraint) | |
108615fc | 353 | { |
354 | //Settings for tracks. The cuts are: | |
355 | //HitChi2Cut: Maximum hit chi2 | |
356 | //goodHitChi2: Chi2 to stop look for next hit | |
357 | //trackChi2Cut: Maximum track chi2 | |
358 | //maxdist: Maximum distance between two clusters when forming segments | |
266829be | 359 | |
360 | SetHitChi2Cut(hitChi2Cut,vertexconstraint); | |
361 | SetGoodHitChi2(goodHitChi2,vertexconstraint); | |
362 | SetTrackChi2Cut(trackChi2Cut,vertexconstraint); | |
363 | SetMaxDist(maxdist,vertexconstraint); | |
108615fc | 364 | } |
365 | ||
366 | void AliL3ConfMapper::SetTrackletCuts(Double_t maxangle,Double_t goodDist, Bool_t vertex_constraint) | |
367 | { | |
368 | //Sets cuts of tracklets. Right now this is only: | |
369 | //maxangle: Maximum angle when forming segments (if trackletlength > 2) | |
370 | ||
371 | fGoodDist=goodDist; | |
372 | SetMaxAngleTracklet(maxangle, vertex_constraint); | |
373 | } | |
374 | ||
375 | void AliL3ConfMapper::ClusterLoop() | |
376 | { | |
377 | //Loop over hits, starting at outermost padrow, and trying to build segments. | |
378 | ||
379 | Int_t row_segm,lastrow = fRowMin + fMinPoints[fVertexConstraint]; | |
380 | AliL3ConfMapPoint *hit; | |
381 | ||
382 | //Loop over rows, and try to create tracks from the hits. | |
383 | //Starts at the outermost row, and loops as long as a track can be build, due to length. | |
384 | ||
385 | for(row_segm = fRowMax; row_segm >= lastrow; row_segm--) | |
386 | { | |
355debe1 | 387 | if(fRow[(row_segm-fRowMin)].first && ((AliL3ConfMapPoint*)fRow[(row_segm-fRowMin)].first)->GetPadRow() < fRowMin + 1) |
108615fc | 388 | break; |
355debe1 | 389 | for(hit = (AliL3ConfMapPoint*)fRow[(row_segm-fRowMin)].first; hit!=0; hit=hit->nextRowHit) |
108615fc | 390 | { |
391 | if(hit->GetUsage() == true) | |
392 | continue; | |
393 | else | |
394 | CreateTrack(hit); | |
395 | } | |
396 | } | |
397 | ||
398 | return; | |
399 | } | |
400 | ||
401 | ||
402 | void AliL3ConfMapper::CreateTrack(AliL3ConfMapPoint *hit) | |
403 | { | |
404 | //Tries to create a track from the initial hit given by ClusterLoop() | |
405 | ||
406 | AliL3ConfMapPoint *closest_hit = NULL; | |
407 | AliL3ConfMapTrack *track = NULL; | |
408 | ||
409 | Int_t point; | |
410 | Int_t tracks = nTracks; | |
411 | nTracks++; | |
412 | ||
413 | track = (AliL3ConfMapTrack*)fTrack->NextTrack(); | |
414 | ||
415 | //reset hit parameters: | |
416 | track->Reset(); | |
417 | ||
418 | UInt_t *trackhitnumber = track->GetHitNumbers(); | |
419 | ||
420 | //set conformal coordinates if we are looking for non vertex tracks | |
421 | if(!fVertexConstraint) | |
422 | { | |
423 | hit->SetAllCoord(hit); | |
424 | } | |
425 | ||
426 | //fill fit parameters of initial track: | |
427 | track->UpdateParam(hit); //here the number of hits is incremented. | |
428 | trackhitnumber[track->GetNumberOfPoints()-1] = hit->GetHitNumber(); | |
429 | ||
430 | Double_t dx,dy; | |
431 | //create tracklets: | |
432 | ||
433 | for(point=1; point<fTrackletLength[fVertexConstraint]; point++) | |
434 | { | |
435 | if((closest_hit = GetNextNeighbor(hit))) | |
436 | {//closest hit exist | |
437 | ||
438 | // Calculate track length in sz plane | |
439 | dx = ((AliL3ConfMapPoint*)closest_hit)->GetX() - ((AliL3ConfMapPoint*)hit)->GetX(); | |
440 | dy = ((AliL3ConfMapPoint*)closest_hit)->GetY() - ((AliL3ConfMapPoint*)hit)->GetY(); | |
441 | //track->fLength += (Double_t)sqrt ( dx * dx + dy * dy ) ; | |
442 | Double_t length = track->GetLength()+(Double_t)sqrt ( dx * dx + dy * dy ); | |
443 | track->SetLength(length); | |
444 | ||
445 | //closest_hit->SetS(track->fLength); | |
446 | closest_hit->SetS(track->GetLength()); | |
447 | ||
448 | //update fit parameters | |
449 | track->UpdateParam(closest_hit); | |
450 | trackhitnumber[track->GetNumberOfPoints()-1] = closest_hit->GetHitNumber(); | |
451 | ||
452 | hit = closest_hit; | |
453 | } | |
454 | else | |
455 | { | |
456 | //closest hit does not exist: | |
457 | track->DeleteCandidate(); | |
458 | fTrack->RemoveLast(); | |
459 | nTracks--; | |
460 | point = fTrackletLength[fVertexConstraint]; | |
461 | } | |
462 | } | |
463 | ||
464 | //tracklet is long enough to be extended to a track | |
465 | if(track->GetNumberOfPoints() == fTrackletLength[fVertexConstraint]) | |
466 | { | |
467 | ||
468 | track->SetProperties(true); | |
469 | ||
470 | if(TrackletAngle(track) > fMaxAngleTracklet[fVertexConstraint]) | |
471 | {//proof if the first points seem to be a beginning of a track | |
108615fc | 472 | track->SetProperties(false); |
473 | track->DeleteCandidate(); | |
474 | fTrack->RemoveLast(); | |
475 | nTracks--; | |
476 | } | |
477 | ||
478 | else//good tracklet ->proceed, follow the trackfit | |
479 | { | |
480 | tracks++; | |
481 | ||
482 | //define variables to keep the total chi: | |
483 | Double_t xyChi2 = track->fChiSq[0]; | |
484 | Double_t szChi2 = track->fChiSq[1]; | |
485 | ||
486 | for(point = fTrackletLength[fVertexConstraint]; point <= fNumRowSegment; point++) | |
487 | { | |
266829be | 488 | track->fChiSq[0] = fHitChi2Cut[fVertexConstraint]; |
108615fc | 489 | closest_hit = GetNextNeighbor((AliL3ConfMapPoint*)track->lastHit,track); |
490 | ||
491 | if(closest_hit) | |
492 | { | |
493 | ||
494 | //keep total chi: | |
495 | Double_t lxyChi2 = track->fChiSq[0]-track->fChiSq[1]; | |
496 | xyChi2 += lxyChi2; | |
497 | closest_hit->xyChi2 = lxyChi2; | |
498 | ||
499 | //update track length: | |
500 | //track->fLength = closest_hit->GetS(); | |
501 | track->SetLength(closest_hit->GetS()); | |
502 | szChi2 += track->fChiSq[1]; | |
503 | closest_hit->szChi2 = track->fChiSq[1]; | |
504 | ||
505 | track->UpdateParam(closest_hit); | |
506 | trackhitnumber[track->GetNumberOfPoints()-1] = closest_hit->GetHitNumber(); | |
507 | ||
508 | //add closest hit to track | |
509 | closest_hit->SetUsage(true); | |
510 | closest_hit->SetTrackNumber(tracks-1); | |
28a650e7 | 511 | |
108615fc | 512 | }//closest_hit |
28a650e7 | 513 | |
108615fc | 514 | else |
515 | { | |
516 | //closest hit does not exist | |
517 | point = fNumRowSegment; //continue with next hit in segment | |
518 | }//else | |
519 | ||
520 | }//create tracks | |
521 | ||
522 | //store track chi2: | |
523 | track->fChiSq[0] = xyChi2; | |
524 | track->fChiSq[1] = szChi2; | |
525 | Double_t normalized_chi2 = (track->fChiSq[0]+track->fChiSq[1])/track->GetNumberOfPoints(); | |
526 | ||
527 | //remove tracks with not enough points already now | |
266829be | 528 | if(track->GetNumberOfPoints() < fMinPoints[fVertexConstraint] || normalized_chi2 > fTrackChi2Cut[fVertexConstraint]) |
108615fc | 529 | { |
530 | track->SetProperties(false); | |
531 | nTracks--; | |
532 | track->DeleteCandidate(); | |
533 | fTrack->RemoveLast(); | |
534 | tracks--; | |
535 | } | |
536 | ||
537 | else | |
538 | { | |
539 | fClustersUnused -= track->GetNumberOfPoints(); | |
540 | track->ComesFromMainVertex(fVertexConstraint); | |
541 | //mark track as main vertex track or not | |
542 | track->SetSector(2); //only needed for testing purposes. | |
543 | track->SetRowRange(fRowMin,fRowMax); | |
544 | ||
545 | if(fVertexConstraint) | |
546 | fMainVertexTracks++; | |
547 | } | |
548 | ||
549 | }//good tracklet | |
550 | ||
551 | } | |
552 | ||
553 | return; | |
554 | } | |
555 | ||
556 | AliL3ConfMapPoint *AliL3ConfMapper::GetNextNeighbor(AliL3ConfMapPoint *start_hit, | |
557 | AliL3ConfMapTrack *track) | |
558 | { | |
559 | //When forming segments: Finds closest hit to input hit | |
560 | //When forming tracks: Find closest hit to track fit. | |
561 | ||
266829be | 562 | Double_t dist,closest_dist = fMaxDist[fVertexConstraint]; |
108615fc | 563 | |
564 | AliL3ConfMapPoint *hit = NULL; | |
565 | AliL3ConfMapPoint *closest_hit = NULL; | |
566 | ||
567 | Int_t sub_row_segm; | |
568 | Int_t sub_phi_segm; | |
569 | Int_t sub_eta_segm; | |
570 | Int_t volumeIndex; | |
571 | Int_t test_hit; | |
572 | ||
573 | Int_t max_row = start_hit->GetPadRow()-1; | |
574 | Int_t min_row; | |
575 | ||
576 | if(track) //finding hit close to trackfit | |
577 | { | |
578 | min_row = start_hit->GetPadRow()-fRowScopeTrack[fVertexConstraint]; | |
579 | } | |
580 | else | |
581 | { | |
582 | min_row = start_hit->GetPadRow()-fRowScopeTracklet[fVertexConstraint]; | |
583 | } | |
584 | ||
585 | //make a smart loop | |
586 | Int_t loop_eta[9] = {0,0,0,-1,-1,-1,1,1,1}; | |
587 | Int_t loop_phi[9] = {0,-1,1,0,-1,1,0,-1,1}; | |
588 | ||
589 | if(min_row < fRowMin) | |
590 | min_row = fRowMin; | |
591 | if(max_row < fRowMin) | |
592 | return 0; //reached the last padrow under consideration | |
593 | ||
594 | else | |
595 | { | |
596 | //loop over sub rows | |
597 | for(sub_row_segm=max_row; sub_row_segm>=min_row; sub_row_segm--) | |
598 | { | |
599 | //loop over subsegments, in the order defined above. | |
600 | for(Int_t i=0; i<9; i++) | |
601 | { | |
602 | sub_phi_segm = start_hit->phiIndex + loop_phi[i]; | |
603 | ||
604 | if(sub_phi_segm<0) | |
605 | sub_phi_segm += fNumPhiSegment; | |
606 | ||
607 | else if(sub_phi_segm >=fNumPhiSegment) | |
608 | sub_phi_segm -= fNumPhiSegment; | |
609 | ||
610 | //loop over sub eta segments | |
611 | ||
612 | sub_eta_segm = start_hit->etaIndex + loop_eta[i]; | |
613 | ||
614 | if(sub_eta_segm < 0 || sub_eta_segm >=fNumEtaSegment) | |
615 | continue;//segment exceeds bounds->skip it | |
616 | ||
617 | //loop over hits in this sub segment: | |
355debe1 | 618 | volumeIndex= (sub_row_segm-fRowMin)*fNumPhiEtaSegmentPlusOne + |
108615fc | 619 | sub_phi_segm*fNumEtaSegmentPlusOne + sub_eta_segm; |
620 | ||
621 | if(volumeIndex<0) | |
622 | {//debugging | |
623 | LOG(AliL3Log::kError,"AliL3ConfMapper::GetNextNeighbor","Memory")<<AliL3Log::kDec<< | |
624 | "VolumeIndex error "<<volumeIndex<<ENDLOG; | |
625 | } | |
626 | ||
627 | for(hit = (AliL3ConfMapPoint*)fVolume[volumeIndex].first; | |
628 | hit!=0; hit = hit->nextVolumeHit) | |
629 | { | |
630 | ||
631 | if(!hit->GetUsage()) | |
632 | {//hit was not used before | |
633 | ||
634 | //set conformal mapping if looking for nonvertex tracks: | |
635 | if(!fVertexConstraint) | |
636 | { | |
637 | hit->SetAllCoord(start_hit); | |
638 | } | |
639 | ||
640 | if(track)//track search - look for nearest neighbor to extrapolated track | |
641 | { | |
642 | if(!VerifyRange(start_hit,hit)) | |
643 | continue; | |
644 | ||
645 | test_hit = EvaluateHit(start_hit,hit,track); | |
646 | ||
647 | if(test_hit == 0)//chi2 not good enough, keep looking | |
648 | continue; | |
649 | else if(test_hit==2)//chi2 good enough, return it | |
650 | return hit; | |
651 | else | |
652 | closest_hit = hit;//chi2 acceptable, but keep looking | |
653 | ||
654 | }//track search | |
655 | ||
656 | else //tracklet search, look for nearest neighbor | |
657 | { | |
658 | ||
659 | if((dist=CalcDistance(start_hit,hit)) < closest_dist) | |
660 | { | |
661 | if(!VerifyRange(start_hit,hit)) | |
662 | continue; | |
663 | closest_dist = dist; | |
664 | closest_hit = hit; | |
665 | ||
666 | //if this hit is good enough, return it: | |
667 | if(closest_dist < fGoodDist) | |
668 | return closest_hit; | |
669 | } | |
670 | else | |
671 | continue;//sub hit was farther away than a hit before | |
672 | ||
673 | }//tracklet search | |
674 | ||
675 | }//hit not used before | |
676 | ||
677 | else continue; //sub hit was used before | |
678 | ||
679 | }//loop over hits in sub segment | |
680 | ||
681 | }//loop over sub segments | |
682 | ||
683 | }//loop over subrows | |
684 | ||
685 | }//else | |
686 | ||
687 | //closest hit found: | |
688 | if(closest_hit)// && closest_dist < mMaxDist) | |
689 | return closest_hit; | |
690 | else | |
691 | return 0; | |
692 | } | |
693 | ||
694 | Int_t AliL3ConfMapper::EvaluateHit(AliL3ConfMapPoint *start_hit,AliL3ConfMapPoint *hit,AliL3ConfMapTrack *track) | |
695 | { | |
696 | //Check if space point gives a fit with acceptable chi2. | |
697 | ||
698 | Double_t temp,dxy,lchi2,dx,dy,slocal,dsz,lszChi2; | |
699 | temp = (track->a2Xy*hit->GetXprime()-hit->GetYprime()+track->a1Xy); | |
700 | dxy = temp*temp/(track->a2Xy*track->a2Xy + 1.); | |
701 | ||
702 | //Calculate chi2 | |
703 | lchi2 = (dxy*hit->GetXYWeight()); | |
704 | ||
705 | if(lchi2 > track->fChiSq[0])//chi2 was worse than before. | |
706 | return 0; | |
707 | ||
708 | //calculate s and the distance hit-line | |
709 | dx = start_hit->GetX()-hit->GetX(); | |
710 | dy = start_hit->GetY()-hit->GetY(); | |
711 | //slocal = track->fLength+sqrt(dx*dx+dy*dy); | |
712 | slocal = track->GetLength()+sqrt(dx*dx+dy*dy); | |
713 | ||
714 | temp = (track->a2Sz*slocal-hit->GetZ()+track->a1Sz); | |
715 | dsz = temp*temp/(track->a2Sz*track->a2Sz+1); | |
716 | ||
717 | //calculate chi2 | |
718 | lszChi2 = dsz*hit->GetZWeight(); | |
719 | lchi2 += lszChi2; | |
720 | ||
721 | ||
722 | //check whether chi2 is better than previous one: | |
723 | if(lchi2 < track->fChiSq[0]) | |
724 | { | |
725 | track->fChiSq[0] = lchi2; | |
726 | track->fChiSq[1] = lszChi2; | |
727 | ||
728 | hit->SetS(slocal); | |
729 | ||
730 | //if chi2 good enough, stop here: | |
266829be | 731 | if(lchi2 < fGoodHitChi2[fVertexConstraint]) |
108615fc | 732 | return 2; |
733 | ||
734 | return 1; | |
735 | } | |
736 | ||
737 | return 0; | |
738 | ||
739 | } | |
740 | ||
741 | Double_t AliL3ConfMapper::CalcDistance(const AliL3ConfMapPoint *hit1,const AliL3ConfMapPoint *hit2) const | |
742 | { | |
743 | //Return distance between two clusters, defined by Pablo | |
744 | ||
745 | Double_t phi_diff = fabs( hit1->GetPhi() - hit2->GetPhi() ); | |
746 | if (phi_diff > pi) phi_diff = twopi - phi_diff; | |
747 | ||
748 | return todeg*fabs(hit1->GetPadRow() - hit2->GetPadRow()) * (phi_diff + fabs( hit1->GetEta() - hit2->GetEta() )); | |
749 | } | |
750 | ||
751 | Bool_t AliL3ConfMapper::VerifyRange(const AliL3ConfMapPoint *hit1,const AliL3ConfMapPoint *hit2) const | |
752 | { | |
753 | //Check if the hit are within reasonable range in phi and eta | |
754 | Double_t dphi,deta;//maxphi=0.1,maxeta=0.1; | |
755 | dphi = fabs(hit1->GetPhi() - hit2->GetPhi()); | |
756 | if(dphi > pi) dphi = fabs(twopi - dphi); | |
757 | if(dphi > fMaxPhi) return false; | |
758 | ||
759 | deta = fabs(hit1->GetEta() - hit2->GetEta()); | |
760 | if(deta > fMaxEta) return false; | |
761 | ||
762 | return true; | |
763 | ||
764 | } | |
765 | ||
766 | Double_t AliL3ConfMapper::TrackletAngle(const AliL3ConfMapTrack *track,Int_t n) const | |
767 | { | |
768 | // Returns the angle 'between' the last three points (started at point number n) on this track. | |
769 | ||
770 | return 0; | |
771 | /* | |
772 | Double_t x1[2]; | |
773 | Double_t x2[2]; | |
774 | Double_t angle1,angle2; | |
775 | TObjArray *hits = track->GetHits(); | |
776 | ||
777 | if (n > track->GetNumberOfPoints()) { | |
778 | n = track->GetNumberOfPoints(); | |
779 | } | |
780 | ||
781 | if (n<3) | |
782 | return 0; | |
783 | ||
784 | ||
785 | x1[0] = ((AliL3ConfMapPoint *)hits->At(n-2))->GetX() - ((AliL3ConfMapPoint *)hits->At(n-3))->GetX(); | |
786 | x1[1] = ((AliL3ConfMapPoint *)hits->At(n-2))->GetY() - ((AliL3ConfMapPoint *)hits->At(n-3))->GetY(); | |
787 | ||
788 | x2[0] = ((AliL3ConfMapPoint *)hits->At(n-1))->GetX() - ((AliL3ConfMapPoint *)hits->At(n-2))->GetX(); | |
789 | x2[1] = ((AliL3ConfMapPoint *)hits->At(n-1))->GetY() - ((AliL3ConfMapPoint *)hits->At(n-2))->GetY(); | |
790 | ||
791 | angle1 = atan2(x1[1],x1[0]); | |
792 | angle2 = atan2(x2[1],x1[0]); | |
793 | return fabs(angle1-angle2); | |
794 | */ | |
795 | } | |
796 | ||
797 | Int_t AliL3ConfMapper::FillTracks() | |
798 | { | |
799 | //Fill track parameters. Which basically means do a fit of helix in real space, | |
800 | //which should be done in order to get nice tracks. | |
801 | ||
802 | Int_t num_of_tracks = nTracks; | |
803 | LOG(AliL3Log::kInformational,"AliL3ConfMapper::FillTracks","nTracks")<<AliL3Log::kDec<< | |
804 | "Number of found tracks: "<<nTracks<<ENDLOG; | |
805 | ||
806 | if(nTracks == 0) | |
807 | { | |
808 | LOG(AliL3Log::kError,"AliL3ConfMapper::FillTracks","nTracks")<<AliL3Log::kDec<< | |
809 | "No tracks found!!"<<ENDLOG; | |
810 | return 0; | |
811 | } | |
812 | ||
813 | // fTrack->Sort(); | |
814 | for(int i=0; i<num_of_tracks; i++) | |
815 | { | |
816 | AliL3ConfMapTrack *track = (AliL3ConfMapTrack*)fTrack->GetTrack(i); | |
817 | track->Fill(fVertex,fMaxDca); | |
818 | } | |
819 | return 1; | |
820 | ||
821 | } | |
822 | ||
823 | Double_t AliL3ConfMapper::CpuTime() | |
824 | { | |
825 | //Return the Cputime in seconds. | |
355debe1 | 826 | struct timeval tv; |
827 | gettimeofday( &tv, NULL ); | |
828 | return tv.tv_sec+(((Double_t)tv.tv_usec)/1000000.); | |
829 | //return (Double_t)(clock()) / CLOCKS_PER_SEC; | |
108615fc | 830 | } |