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3e87ef69 | 1 | // @(#) $Id$ |
266829be | 2 | |
b661165c | 3 | // Author: Anders Vestbo <mailto:vestbo@fi.uib.no> |
3e87ef69 | 4 | //*-- Copyright © ALICE HLT Group |
b661165c | 5 | |
118c26c3 | 6 | #include "AliL3StandardIncludes.h" |
355debe1 | 7 | #include <sys/time.h> |
108615fc | 8 | |
355debe1 | 9 | #include "AliL3Logging.h" |
108615fc | 10 | #include "AliL3Vertex.h" |
11 | #include "AliL3ConfMapTrack.h" | |
12 | #include "AliL3ConfMapPoint.h" | |
13 | #include "AliL3TrackArray.h" | |
ef79795d | 14 | #include "AliL3Transform.h" |
02f030e3 | 15 | #include "AliL3ConfMapper.h" |
108615fc | 16 | |
3e87ef69 | 17 | /** \class AliL3ConfMapper |
18 | <pre> | |
b661165c | 19 | //_____________________________________________________________ |
20 | // AliL3ConfMapper | |
108615fc | 21 | // |
b661165c | 22 | // Conformal mapping base class |
108615fc | 23 | // |
3e87ef69 | 24 | </pre> |
25 | */ | |
26 | ||
108615fc | 27 | ClassImp(AliL3ConfMapper) |
28 | ||
108615fc | 29 | AliL3ConfMapper::AliL3ConfMapper() |
30 | { | |
31 | //Default constructor | |
32 | fVertex = NULL; | |
33 | fTrack = NULL; | |
34 | fHit = NULL; | |
108615fc | 35 | fVolume = NULL; |
36 | fRow = NULL; | |
37 | fBench = (Bool_t)true; | |
108615fc | 38 | fVertexConstraint = (Bool_t)true; |
0a86fbb7 | 39 | fParamSet[0]=0; |
40 | fParamSet[1]=0; | |
108615fc | 41 | } |
42 | ||
43 | ||
44 | AliL3ConfMapper::~AliL3ConfMapper() | |
45 | { | |
46 | // Destructor. | |
108615fc | 47 | if(fVolume) { |
48 | delete [] fVolume; | |
49 | } | |
50 | if(fRow) { | |
51 | delete [] fRow; | |
52 | } | |
108615fc | 53 | if(fHit) { |
54 | delete [] fHit; | |
55 | } | |
56 | if(fTrack) { | |
57 | delete fTrack; | |
58 | } | |
59 | ||
60 | } | |
355debe1 | 61 | |
62 | void AliL3ConfMapper::InitVolumes() | |
63 | { | |
64 | //Data organization. | |
65 | //Allocate volumes, set conformal coordinates and pointers. | |
66 | ||
67 | //Should be done after setting the track parameters | |
68 | ||
68a27388 | 69 | fNumRowSegmentPlusOne = AliL3Transform::GetNRows();//NumRows[0]; //Maximum 32. |
355debe1 | 70 | fNumPhiSegmentPlusOne = fNumPhiSegment+1; |
71 | fNumEtaSegmentPlusOne = fNumEtaSegment+1; | |
72 | fNumPhiEtaSegmentPlusOne = fNumPhiSegmentPlusOne*fNumEtaSegmentPlusOne; | |
73 | fBounds = fNumRowSegmentPlusOne * fNumPhiSegmentPlusOne * fNumEtaSegmentPlusOne; | |
74 | ||
75 | //Allocate volumes: | |
76 | if(fVolume) delete [] fVolume; | |
77 | if(fRow) delete [] fRow; | |
78 | ||
79 | LOG(AliL3Log::kInformational,"AliL3ConfMapper::InitVolumes","Memory")<<AliL3Log::kDec<< | |
80 | "Allocating "<<fBounds*sizeof(AliL3ConfMapContainer)<<" Bytes to fVolume"<<ENDLOG; | |
81 | LOG(AliL3Log::kInformational,"AliL3ConfMapper::InitVolumes","Memory")<<AliL3Log::kDec<< | |
82 | "Allocating "<<fNumRowSegmentPlusOne*sizeof(AliL3ConfMapContainer)<<" Bytes to fRow"<<ENDLOG; | |
83 | ||
84 | fVolume = new AliL3ConfMapContainer[fBounds]; | |
85 | fRow = new AliL3ConfMapContainer[fNumRowSegmentPlusOne]; | |
86 | ||
87 | memset(fVolume,0,fBounds*sizeof(AliL3ConfMapContainer)); | |
88 | memset(fRow,0,fNumRowSegmentPlusOne*sizeof(AliL3ConfMapContainer)); | |
89 | ||
3e87ef69 | 90 | Int_t max_num_of_tracks = 2000; |
91 | Int_t max_num_of_hits = 120000; | |
355debe1 | 92 | |
93 | if(fHit) | |
94 | delete [] fHit; | |
95 | if(fTrack) | |
96 | delete fTrack; | |
97 | ||
98 | fHit = new AliL3ConfMapPoint[max_num_of_hits]; | |
99 | fTrack = new AliL3TrackArray("AliL3ConfMapTrack",max_num_of_tracks); | |
100 | } | |
108615fc | 101 | |
102 | void AliL3ConfMapper::InitSector(Int_t sector,Int_t *rowrange,Float_t *etarange) | |
02f030e3 | 103 | { //sector means slice here |
108615fc | 104 | //Initialize tracker for tracking in a given sector. |
105 | //Resets track and hit arrays. | |
106 | //Here it is also possible to specify a subsector, by defining | |
107 | //rowrange[0]=innermost row; | |
108 | //rowrange[1]=outermostrow; | |
109 | //Finally you can specify etaslices to save time (assuming a good seed from TRD...) | |
355debe1 | 110 | |
108615fc | 111 | //Define tracking area: |
112 | if(rowrange) | |
113 | { | |
114 | fRowMin = rowrange[0]; | |
115 | fRowMax = rowrange[1]; | |
116 | } | |
117 | else //complete sector | |
118 | { | |
119 | fRowMin = 0; | |
68a27388 | 120 | fRowMax = AliL3Transform::GetNRows() - 1; |
108615fc | 121 | } |
122 | if(etarange) | |
123 | { | |
124 | fEtaMin = etarange[0]; | |
ee35ea59 | 125 | fEtaMax = sector < 18 ? etarange[1] : -etarange[1]; |
108615fc | 126 | } |
127 | else | |
128 | { | |
129 | fEtaMin = 0; | |
494fad94 | 130 | fEtaMax = sector < 18 ? 0.9 : -0.9; |
108615fc | 131 | } |
132 | ||
133 | //Set the angles to sector 2: | |
5a31e9df | 134 | fPhiMin = -10*AliL3Transform::ToRad();//fParam->GetAngle(sector) - 10/todeg; |
135 | fPhiMax = 10*AliL3Transform::ToRad();//fParam->GetAngle(sector) + 10/todeg; | |
108615fc | 136 | |
108615fc | 137 | nTracks=0; |
266829be | 138 | fMainVertexTracks = 0; |
108615fc | 139 | fClustersUnused = 0; |
68a27388 | 140 | fEtaHitsOutOfRange=0; |
141 | fPhiHitsOutOfRange=0; | |
108615fc | 142 | |
143 | fNumRowSegment = fRowMax - fRowMin; //number of rows to be considered by tracker | |
266829be | 144 | LOG(AliL3Log::kInformational,"AliL3ConfMapper::InitSector","B-field") |
eeddc64d | 145 | <<"Tracker initializing with a magnetic field of "<<AliL3Transform::GetBField()<<ENDLOG; |
355debe1 | 146 | |
147 | fTrack->Reset(); | |
108615fc | 148 | } |
149 | ||
108615fc | 150 | Bool_t AliL3ConfMapper::ReadHits(UInt_t count, AliL3SpacePointData* hits ) |
151 | { | |
b1ed0288 | 152 | //read hits |
108615fc | 153 | Int_t nhit=(Int_t)count; |
a9d69a4d | 154 | for (Int_t i=0;i<nhit;i++) |
355debe1 | 155 | { |
156 | fHit[i].Reset(); | |
157 | fHit[i].ReadHits(&(hits[i])); | |
158 | } | |
108615fc | 159 | fClustersUnused += nhit; |
355debe1 | 160 | LOG(AliL3Log::kInformational,"AliL3ConfMapper::ReadHits","#hits") |
161 | <<AliL3Log::kDec<<"hit_counter: "<<nhit<<" count: "<<count<<ENDLOG; | |
162 | ||
108615fc | 163 | return true; |
164 | } | |
165 | ||
108615fc | 166 | void AliL3ConfMapper::SetPointers() |
167 | { | |
3e87ef69 | 168 | //Check if there are not enough clusters to make a track in this sector |
169 | //Can happen in pp events. | |
02f030e3 | 170 | |
3e87ef69 | 171 | if(fClustersUnused < fMinPoints[fVertexConstraint]) |
172 | return; | |
173 | ||
355debe1 | 174 | //Reset detector volumes |
108615fc | 175 | memset(fVolume,0,fBounds*sizeof(AliL3ConfMapContainer)); |
176 | memset(fRow,0,fNumRowSegmentPlusOne*sizeof(AliL3ConfMapContainer)); | |
177 | ||
178 | Float_t phiSlice = (fPhiMax-fPhiMin)/fNumPhiSegment; | |
179 | Float_t etaSlice = (fEtaMax-fEtaMin)/fNumEtaSegment; | |
355debe1 | 180 | |
108615fc | 181 | Int_t volumeIndex; |
e0e14b24 | 182 | Int_t local_counter=0; |
108615fc | 183 | for(Int_t j=0; j<fClustersUnused; j++) |
184 | { | |
108615fc | 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 | { | |
02f030e3 | 200 | //cout << "Phiindex: " << thisHit->phiIndex << " " << thisHit->GetPhi() << endl; |
108615fc | 201 | fPhiHitsOutOfRange++; |
202 | continue; | |
203 | } | |
204 | ||
205 | thisHit->etaIndex=(Int_t)((thisHit->GetEta()-fEtaMin)/etaSlice + 1); | |
206 | if(thisHit->etaIndex<1 || thisHit->etaIndex>fNumEtaSegment) | |
207 | { | |
02f030e3 | 208 | //cout << "Etaindex: " << thisHit->etaIndex << " " << thisHit->GetEta() << endl; |
108615fc | 209 | fEtaHitsOutOfRange++; |
210 | continue; | |
211 | } | |
e0e14b24 | 212 | local_counter++; |
355debe1 | 213 | |
214 | volumeIndex = (localrow-fRowMin)*fNumPhiEtaSegmentPlusOne+thisHit->phiIndex*fNumEtaSegmentPlusOne+thisHit->etaIndex; | |
215 | ||
108615fc | 216 | if(fVolume[volumeIndex].first == NULL) |
217 | fVolume[volumeIndex].first = (void *)thisHit; | |
218 | else | |
355debe1 | 219 | ((AliL3ConfMapPoint *)fVolume[volumeIndex].last)->nextVolumeHit=thisHit; |
108615fc | 220 | fVolume[volumeIndex].last = (void *)thisHit; |
221 | ||
222 | ||
223 | //set row pointers | |
355debe1 | 224 | if(fRow[(localrow-fRowMin)].first == NULL) |
225 | fRow[(localrow-fRowMin)].first = (void *)thisHit; | |
108615fc | 226 | else |
355debe1 | 227 | ((AliL3ConfMapPoint *)(fRow[(localrow-fRowMin)].last))->nextRowHit = thisHit; |
228 | fRow[(localrow-fRowMin)].last = (void *)thisHit; | |
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 | |
02f030e3 | 236 | Int_t hits_accepted=fClustersUnused-(fEtaHitsOutOfRange+fPhiHitsOutOfRange); |
355debe1 | 237 | LOG(AliL3Log::kInformational,"AliL3ConfMapper::SetPointers","Setup") |
238 | <<"Setup finished, hits out of range: "<<fEtaHitsOutOfRange+fPhiHitsOutOfRange | |
02f030e3 | 239 | <<" hits accepted "<<hits_accepted<<ENDLOG; |
108615fc | 240 | } |
241 | ||
242 | void AliL3ConfMapper::MainVertexTracking_a() | |
243 | { | |
244 | //Tracking with vertex constraint. | |
245 | ||
0a86fbb7 | 246 | if(!fParamSet[(Int_t)kTRUE]) |
108615fc | 247 | { |
248 | LOG(AliL3Log::kError,"AliL3ConfMapper::MainVertexTracking","Parameters")<<AliL3Log::kDec<< | |
249 | "Tracking parameters not set!"<<ENDLOG; | |
250 | return; | |
251 | } | |
252 | ||
355debe1 | 253 | Double_t initCpuTime,cpuTime; |
254 | initCpuTime = CpuTime(); | |
02f030e3 | 255 | |
108615fc | 256 | SetPointers(); |
257 | SetVertexConstraint(true); | |
355debe1 | 258 | cpuTime = CpuTime() - initCpuTime; |
259 | if(fBench) | |
260 | LOG(AliL3Log::kInformational,"AliL3ConfMapper::MainVertexTracking_a","Timing") | |
261 | <<AliL3Log::kDec<<"Setup finished in "<<cpuTime*1000<<" ms"<<ENDLOG; | |
262 | ||
108615fc | 263 | } |
264 | ||
265 | void AliL3ConfMapper::MainVertexTracking_b() | |
266 | { | |
267 | //Tracking with vertex constraint. | |
268 | ||
0a86fbb7 | 269 | if(!fParamSet[(Int_t)kTRUE]) |
108615fc | 270 | { |
271 | LOG(AliL3Log::kError,"AliL3ConfMapper::MainVertexTracking","Parameters")<<AliL3Log::kDec<< | |
272 | "Tracking parameters not set!"<<ENDLOG; | |
273 | return; | |
274 | } | |
355debe1 | 275 | Double_t initCpuTime,cpuTime; |
276 | initCpuTime = CpuTime(); | |
277 | ||
108615fc | 278 | ClusterLoop(); |
355debe1 | 279 | |
280 | cpuTime = CpuTime() - initCpuTime; | |
281 | if(fBench) | |
282 | LOG(AliL3Log::kInformational,"AliL3ConfMapper::MainVertexTracking_b","Timing") | |
283 | <<AliL3Log::kDec<<"Main Tracking finished in "<<cpuTime*1000<<" ms"<<ENDLOG; | |
108615fc | 284 | } |
285 | ||
286 | void AliL3ConfMapper::MainVertexTracking() | |
287 | { | |
288 | //Tracking with vertex constraint. | |
289 | ||
0a86fbb7 | 290 | if(!fParamSet[(Int_t)kTRUE]) |
108615fc | 291 | { |
292 | LOG(AliL3Log::kError,"AliL3ConfMapper::MainVertexTracking","Parameters")<<AliL3Log::kDec<< | |
293 | "Tracking parameters not set!"<<ENDLOG; | |
294 | return; | |
295 | } | |
296 | ||
297 | Double_t initCpuTime,cpuTime; | |
298 | initCpuTime = CpuTime(); | |
299 | ||
300 | SetPointers(); | |
301 | SetVertexConstraint(true); | |
302 | ||
303 | ClusterLoop(); | |
304 | ||
305 | cpuTime = CpuTime() - initCpuTime; | |
306 | if(fBench) | |
307 | LOG(AliL3Log::kInformational,"AliL3ConfMapper::MainVertexTracking","Timing")<<AliL3Log::kDec<< | |
308 | "Tracking finished in "<<cpuTime*1000<<" ms"<<ENDLOG; | |
355debe1 | 309 | |
108615fc | 310 | return; |
311 | } | |
312 | ||
313 | void AliL3ConfMapper::NonVertexTracking() | |
314 | { | |
315 | //Tracking with no vertex constraint. This should be called after doing MainVertexTracking, | |
316 | //in order to do tracking on the remaining clusters. | |
317 | //The conformal mapping is now done with respect to the first cluster | |
318 | //assosciated with this track. | |
0a86fbb7 | 319 | |
320 | if(!fParamSet[(Int_t)kFALSE]) | |
321 | { | |
322 | LOG(AliL3Log::kError,"AliL3ConfMapper::NonVertexTracking","Parameters")<<AliL3Log::kDec<< | |
323 | "Tracking parameters not set!"<<ENDLOG; | |
324 | return; | |
325 | } | |
326 | ||
108615fc | 327 | SetVertexConstraint(false); |
328 | ClusterLoop(); | |
329 | LOG(AliL3Log::kInformational,"AliL3ConfMapper::NonVertexTracking","ntracks")<<AliL3Log::kDec<< | |
266829be | 330 | "Number of nonvertex tracks found: "<<(nTracks-fMainVertexTracks)<<ENDLOG; |
108615fc | 331 | return; |
332 | } | |
333 | ||
334 | void AliL3ConfMapper::MainVertexSettings(Int_t trackletlength, Int_t tracklength, | |
335 | Int_t rowscopetracklet, Int_t rowscopetrack, | |
336 | Double_t maxphi,Double_t maxeta) | |
337 | { | |
338 | //Settings for main vertex tracking. The cuts are: | |
339 | //TrackletLength: #hits on segment, before trying to build a track | |
340 | //TrackLength: Minimum hits on a track | |
341 | //RowScopeTracklet: Row search range for segments | |
342 | //RowScopeTrack: Row search range for tracks | |
343 | ||
344 | SetTrackletLength(trackletlength,(Bool_t)true); | |
345 | SetRowScopeTracklet(rowscopetracklet, (Bool_t) true); | |
346 | SetRowScopeTrack(rowscopetrack, (Bool_t) true); | |
347 | SetMinPoints(tracklength,(Bool_t)true); | |
348 | fMaxPhi=maxphi; | |
349 | fMaxEta=maxeta; | |
0a86fbb7 | 350 | SetParamDone(kTRUE); |
108615fc | 351 | } |
352 | ||
353 | void AliL3ConfMapper::NonVertexSettings(Int_t trackletlength, Int_t tracklength, | |
354 | Int_t rowscopetracklet, Int_t rowscopetrack) | |
355 | { | |
b1ed0288 | 356 | //set parameters for non-vertex tracking |
108615fc | 357 | SetTrackletLength(trackletlength,(Bool_t)false); |
358 | SetRowScopeTracklet(rowscopetracklet, (Bool_t)false); | |
359 | SetRowScopeTrack(rowscopetrack, (Bool_t)false); | |
360 | SetMinPoints(tracklength,(Bool_t)false); | |
0a86fbb7 | 361 | SetParamDone(kFALSE); |
108615fc | 362 | } |
363 | ||
02f030e3 | 364 | void AliL3ConfMapper::SetTrackCuts(Double_t hitChi2Cut, Double_t goodHitChi2, Double_t trackChi2Cut,Int_t maxdist,Bool_t vertexconstraint) |
108615fc | 365 | { |
366 | //Settings for tracks. The cuts are: | |
367 | //HitChi2Cut: Maximum hit chi2 | |
368 | //goodHitChi2: Chi2 to stop look for next hit | |
369 | //trackChi2Cut: Maximum track chi2 | |
370 | //maxdist: Maximum distance between two clusters when forming segments | |
266829be | 371 | |
372 | SetHitChi2Cut(hitChi2Cut,vertexconstraint); | |
373 | SetGoodHitChi2(goodHitChi2,vertexconstraint); | |
374 | SetTrackChi2Cut(trackChi2Cut,vertexconstraint); | |
375 | SetMaxDist(maxdist,vertexconstraint); | |
108615fc | 376 | } |
377 | ||
378 | void AliL3ConfMapper::SetTrackletCuts(Double_t maxangle,Double_t goodDist, Bool_t vertex_constraint) | |
379 | { | |
380 | //Sets cuts of tracklets. Right now this is only: | |
381 | //maxangle: Maximum angle when forming segments (if trackletlength > 2) | |
382 | ||
383 | fGoodDist=goodDist; | |
384 | SetMaxAngleTracklet(maxangle, vertex_constraint); | |
385 | } | |
386 | ||
387 | void AliL3ConfMapper::ClusterLoop() | |
388 | { | |
389 | //Loop over hits, starting at outermost padrow, and trying to build segments. | |
3e87ef69 | 390 | |
391 | //Check if there are not enough clusters to make a track in this sector | |
392 | //Can happen in pp events. | |
393 | if(fClustersUnused < fMinPoints[fVertexConstraint]) | |
394 | return; | |
395 | ||
108615fc | 396 | Int_t row_segm,lastrow = fRowMin + fMinPoints[fVertexConstraint]; |
397 | AliL3ConfMapPoint *hit; | |
398 | ||
399 | //Loop over rows, and try to create tracks from the hits. | |
400 | //Starts at the outermost row, and loops as long as a track can be build, due to length. | |
401 | ||
402 | for(row_segm = fRowMax; row_segm >= lastrow; row_segm--) | |
403 | { | |
355debe1 | 404 | if(fRow[(row_segm-fRowMin)].first && ((AliL3ConfMapPoint*)fRow[(row_segm-fRowMin)].first)->GetPadRow() < fRowMin + 1) |
108615fc | 405 | break; |
02f030e3 | 406 | |
355debe1 | 407 | for(hit = (AliL3ConfMapPoint*)fRow[(row_segm-fRowMin)].first; hit!=0; hit=hit->nextRowHit) |
108615fc | 408 | { |
409 | if(hit->GetUsage() == true) | |
410 | continue; | |
411 | else | |
412 | CreateTrack(hit); | |
413 | } | |
414 | } | |
415 | ||
416 | return; | |
417 | } | |
418 | ||
419 | ||
420 | void AliL3ConfMapper::CreateTrack(AliL3ConfMapPoint *hit) | |
421 | { | |
422 | //Tries to create a track from the initial hit given by ClusterLoop() | |
423 | ||
424 | AliL3ConfMapPoint *closest_hit = NULL; | |
425 | AliL3ConfMapTrack *track = NULL; | |
426 | ||
427 | Int_t point; | |
428 | Int_t tracks = nTracks; | |
429 | nTracks++; | |
430 | ||
431 | track = (AliL3ConfMapTrack*)fTrack->NextTrack(); | |
432 | ||
433 | //reset hit parameters: | |
434 | track->Reset(); | |
435 | ||
436 | UInt_t *trackhitnumber = track->GetHitNumbers(); | |
437 | ||
438 | //set conformal coordinates if we are looking for non vertex tracks | |
439 | if(!fVertexConstraint) | |
440 | { | |
441 | hit->SetAllCoord(hit); | |
442 | } | |
443 | ||
444 | //fill fit parameters of initial track: | |
445 | track->UpdateParam(hit); //here the number of hits is incremented. | |
446 | trackhitnumber[track->GetNumberOfPoints()-1] = hit->GetHitNumber(); | |
447 | ||
448 | Double_t dx,dy; | |
449 | //create tracklets: | |
450 | ||
451 | for(point=1; point<fTrackletLength[fVertexConstraint]; point++) | |
452 | { | |
453 | if((closest_hit = GetNextNeighbor(hit))) | |
454 | {//closest hit exist | |
455 | ||
456 | // Calculate track length in sz plane | |
457 | dx = ((AliL3ConfMapPoint*)closest_hit)->GetX() - ((AliL3ConfMapPoint*)hit)->GetX(); | |
458 | dy = ((AliL3ConfMapPoint*)closest_hit)->GetY() - ((AliL3ConfMapPoint*)hit)->GetY(); | |
459 | //track->fLength += (Double_t)sqrt ( dx * dx + dy * dy ) ; | |
460 | Double_t length = track->GetLength()+(Double_t)sqrt ( dx * dx + dy * dy ); | |
461 | track->SetLength(length); | |
462 | ||
463 | //closest_hit->SetS(track->fLength); | |
464 | closest_hit->SetS(track->GetLength()); | |
465 | ||
466 | //update fit parameters | |
467 | track->UpdateParam(closest_hit); | |
468 | trackhitnumber[track->GetNumberOfPoints()-1] = closest_hit->GetHitNumber(); | |
469 | ||
470 | hit = closest_hit; | |
471 | } | |
472 | else | |
473 | { | |
474 | //closest hit does not exist: | |
475 | track->DeleteCandidate(); | |
476 | fTrack->RemoveLast(); | |
477 | nTracks--; | |
478 | point = fTrackletLength[fVertexConstraint]; | |
479 | } | |
480 | } | |
481 | ||
482 | //tracklet is long enough to be extended to a track | |
483 | if(track->GetNumberOfPoints() == fTrackletLength[fVertexConstraint]) | |
484 | { | |
485 | ||
486 | track->SetProperties(true); | |
487 | ||
488 | if(TrackletAngle(track) > fMaxAngleTracklet[fVertexConstraint]) | |
489 | {//proof if the first points seem to be a beginning of a track | |
108615fc | 490 | track->SetProperties(false); |
491 | track->DeleteCandidate(); | |
492 | fTrack->RemoveLast(); | |
493 | nTracks--; | |
494 | } | |
495 | ||
496 | else//good tracklet ->proceed, follow the trackfit | |
497 | { | |
498 | tracks++; | |
499 | ||
500 | //define variables to keep the total chi: | |
b1ed0288 | 501 | Double_t xyChi2 = track->GetChiSq1(); |
502 | Double_t szChi2 = track->GetChiSq2(); | |
108615fc | 503 | |
504 | for(point = fTrackletLength[fVertexConstraint]; point <= fNumRowSegment; point++) | |
505 | { | |
b1ed0288 | 506 | track->SetChiSq1(fHitChi2Cut[fVertexConstraint]); |
507 | closest_hit = GetNextNeighbor((AliL3ConfMapPoint*)track->GetLastHit(),track); | |
108615fc | 508 | |
509 | if(closest_hit) | |
510 | { | |
108615fc | 511 | //keep total chi: |
b1ed0288 | 512 | Double_t lxyChi2 = track->GetChiSq1()-track->GetChiSq2(); |
108615fc | 513 | xyChi2 += lxyChi2; |
514 | closest_hit->xyChi2 = lxyChi2; | |
515 | ||
516 | //update track length: | |
517 | //track->fLength = closest_hit->GetS(); | |
518 | track->SetLength(closest_hit->GetS()); | |
b1ed0288 | 519 | szChi2 += track->GetChiSq2(); |
520 | closest_hit->szChi2 = track->GetChiSq2(); | |
108615fc | 521 | |
522 | track->UpdateParam(closest_hit); | |
523 | trackhitnumber[track->GetNumberOfPoints()-1] = closest_hit->GetHitNumber(); | |
524 | ||
525 | //add closest hit to track | |
526 | closest_hit->SetUsage(true); | |
527 | closest_hit->SetTrackNumber(tracks-1); | |
28a650e7 | 528 | |
108615fc | 529 | }//closest_hit |
28a650e7 | 530 | |
108615fc | 531 | else |
532 | { | |
533 | //closest hit does not exist | |
534 | point = fNumRowSegment; //continue with next hit in segment | |
535 | }//else | |
536 | ||
537 | }//create tracks | |
538 | ||
539 | //store track chi2: | |
b1ed0288 | 540 | track->SetChiSq1(xyChi2); |
541 | track->SetChiSq2(szChi2); | |
542 | Double_t normalized_chi2 = (track->GetChiSq1()+track->GetChiSq2())/track->GetNumberOfPoints(); | |
108615fc | 543 | |
544 | //remove tracks with not enough points already now | |
266829be | 545 | if(track->GetNumberOfPoints() < fMinPoints[fVertexConstraint] || normalized_chi2 > fTrackChi2Cut[fVertexConstraint]) |
108615fc | 546 | { |
547 | track->SetProperties(false); | |
548 | nTracks--; | |
549 | track->DeleteCandidate(); | |
550 | fTrack->RemoveLast(); | |
551 | tracks--; | |
552 | } | |
553 | ||
554 | else | |
555 | { | |
556 | fClustersUnused -= track->GetNumberOfPoints(); | |
557 | track->ComesFromMainVertex(fVertexConstraint); | |
558 | //mark track as main vertex track or not | |
559 | track->SetSector(2); //only needed for testing purposes. | |
560 | track->SetRowRange(fRowMin,fRowMax); | |
561 | ||
562 | if(fVertexConstraint) | |
563 | fMainVertexTracks++; | |
564 | } | |
565 | ||
566 | }//good tracklet | |
567 | ||
568 | } | |
569 | ||
570 | return; | |
571 | } | |
572 | ||
573 | AliL3ConfMapPoint *AliL3ConfMapper::GetNextNeighbor(AliL3ConfMapPoint *start_hit, | |
574 | AliL3ConfMapTrack *track) | |
575 | { | |
576 | //When forming segments: Finds closest hit to input hit | |
577 | //When forming tracks: Find closest hit to track fit. | |
578 | ||
266829be | 579 | Double_t dist,closest_dist = fMaxDist[fVertexConstraint]; |
108615fc | 580 | |
581 | AliL3ConfMapPoint *hit = NULL; | |
582 | AliL3ConfMapPoint *closest_hit = NULL; | |
583 | ||
584 | Int_t sub_row_segm; | |
585 | Int_t sub_phi_segm; | |
586 | Int_t sub_eta_segm; | |
587 | Int_t volumeIndex; | |
588 | Int_t test_hit; | |
589 | ||
590 | Int_t max_row = start_hit->GetPadRow()-1; | |
591 | Int_t min_row; | |
592 | ||
593 | if(track) //finding hit close to trackfit | |
594 | { | |
595 | min_row = start_hit->GetPadRow()-fRowScopeTrack[fVertexConstraint]; | |
596 | } | |
597 | else | |
598 | { | |
599 | min_row = start_hit->GetPadRow()-fRowScopeTracklet[fVertexConstraint]; | |
600 | } | |
601 | ||
602 | //make a smart loop | |
0a86fbb7 | 603 | Int_t loop_eta[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}; |
604 | Int_t loop_phi[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}; | |
108615fc | 605 | |
606 | if(min_row < fRowMin) | |
607 | min_row = fRowMin; | |
608 | if(max_row < fRowMin) | |
609 | return 0; //reached the last padrow under consideration | |
610 | ||
611 | else | |
612 | { | |
613 | //loop over sub rows | |
614 | for(sub_row_segm=max_row; sub_row_segm>=min_row; sub_row_segm--) | |
615 | { | |
616 | //loop over subsegments, in the order defined above. | |
617 | for(Int_t i=0; i<9; i++) | |
618 | { | |
619 | sub_phi_segm = start_hit->phiIndex + loop_phi[i]; | |
620 | ||
0a86fbb7 | 621 | if(sub_phi_segm < 0 || sub_phi_segm >= fNumPhiSegment) |
622 | continue; | |
623 | /* | |
624 | if(sub_phi_segm<0) | |
108615fc | 625 | sub_phi_segm += fNumPhiSegment; |
0a86fbb7 | 626 | |
627 | else if(sub_phi_segm >=fNumPhiSegment) | |
108615fc | 628 | sub_phi_segm -= fNumPhiSegment; |
0a86fbb7 | 629 | */ |
108615fc | 630 | //loop over sub eta segments |
631 | ||
632 | sub_eta_segm = start_hit->etaIndex + loop_eta[i]; | |
633 | ||
634 | if(sub_eta_segm < 0 || sub_eta_segm >=fNumEtaSegment) | |
635 | continue;//segment exceeds bounds->skip it | |
636 | ||
637 | //loop over hits in this sub segment: | |
355debe1 | 638 | volumeIndex= (sub_row_segm-fRowMin)*fNumPhiEtaSegmentPlusOne + |
108615fc | 639 | sub_phi_segm*fNumEtaSegmentPlusOne + sub_eta_segm; |
640 | ||
641 | if(volumeIndex<0) | |
642 | {//debugging | |
643 | LOG(AliL3Log::kError,"AliL3ConfMapper::GetNextNeighbor","Memory")<<AliL3Log::kDec<< | |
644 | "VolumeIndex error "<<volumeIndex<<ENDLOG; | |
645 | } | |
646 | ||
647 | for(hit = (AliL3ConfMapPoint*)fVolume[volumeIndex].first; | |
648 | hit!=0; hit = hit->nextVolumeHit) | |
649 | { | |
650 | ||
651 | if(!hit->GetUsage()) | |
652 | {//hit was not used before | |
653 | ||
654 | //set conformal mapping if looking for nonvertex tracks: | |
655 | if(!fVertexConstraint) | |
656 | { | |
657 | hit->SetAllCoord(start_hit); | |
658 | } | |
659 | ||
660 | if(track)//track search - look for nearest neighbor to extrapolated track | |
661 | { | |
662 | if(!VerifyRange(start_hit,hit)) | |
663 | continue; | |
664 | ||
665 | test_hit = EvaluateHit(start_hit,hit,track); | |
666 | ||
667 | if(test_hit == 0)//chi2 not good enough, keep looking | |
668 | continue; | |
669 | else if(test_hit==2)//chi2 good enough, return it | |
670 | return hit; | |
671 | else | |
672 | closest_hit = hit;//chi2 acceptable, but keep looking | |
673 | ||
674 | }//track search | |
675 | ||
676 | else //tracklet search, look for nearest neighbor | |
677 | { | |
678 | ||
679 | if((dist=CalcDistance(start_hit,hit)) < closest_dist) | |
680 | { | |
681 | if(!VerifyRange(start_hit,hit)) | |
682 | continue; | |
683 | closest_dist = dist; | |
684 | closest_hit = hit; | |
685 | ||
686 | //if this hit is good enough, return it: | |
687 | if(closest_dist < fGoodDist) | |
688 | return closest_hit; | |
689 | } | |
690 | else | |
691 | continue;//sub hit was farther away than a hit before | |
692 | ||
693 | }//tracklet search | |
694 | ||
695 | }//hit not used before | |
696 | ||
697 | else continue; //sub hit was used before | |
698 | ||
699 | }//loop over hits in sub segment | |
700 | ||
701 | }//loop over sub segments | |
702 | ||
703 | }//loop over subrows | |
704 | ||
705 | }//else | |
706 | ||
707 | //closest hit found: | |
708 | if(closest_hit)// && closest_dist < mMaxDist) | |
709 | return closest_hit; | |
710 | else | |
711 | return 0; | |
712 | } | |
713 | ||
714 | Int_t AliL3ConfMapper::EvaluateHit(AliL3ConfMapPoint *start_hit,AliL3ConfMapPoint *hit,AliL3ConfMapTrack *track) | |
715 | { | |
716 | //Check if space point gives a fit with acceptable chi2. | |
717 | ||
718 | Double_t temp,dxy,lchi2,dx,dy,slocal,dsz,lszChi2; | |
b1ed0288 | 719 | temp = (track->GetA2Xy()*hit->GetXprime()-hit->GetYprime()+track->GetA1Xy()); |
720 | dxy = temp*temp/(track->GetA2Xy()*track->GetA2Xy() + 1.); | |
108615fc | 721 | |
722 | //Calculate chi2 | |
723 | lchi2 = (dxy*hit->GetXYWeight()); | |
724 | ||
b1ed0288 | 725 | if(lchi2 > track->GetChiSq1())//chi2 was worse than before. |
108615fc | 726 | return 0; |
727 | ||
728 | //calculate s and the distance hit-line | |
729 | dx = start_hit->GetX()-hit->GetX(); | |
730 | dy = start_hit->GetY()-hit->GetY(); | |
731 | //slocal = track->fLength+sqrt(dx*dx+dy*dy); | |
732 | slocal = track->GetLength()+sqrt(dx*dx+dy*dy); | |
733 | ||
b1ed0288 | 734 | temp = (track->GetA2Sz()*slocal-hit->GetZ()+track->GetA1Sz()); |
735 | dsz = temp*temp/(track->GetA2Sz()*track->GetA2Sz()+1); | |
108615fc | 736 | |
737 | //calculate chi2 | |
738 | lszChi2 = dsz*hit->GetZWeight(); | |
739 | lchi2 += lszChi2; | |
740 | ||
741 | ||
742 | //check whether chi2 is better than previous one: | |
b1ed0288 | 743 | if(lchi2 < track->GetChiSq1()) |
108615fc | 744 | { |
b1ed0288 | 745 | track->SetChiSq1(lchi2); |
746 | track->SetChiSq2(lszChi2); | |
108615fc | 747 | |
748 | hit->SetS(slocal); | |
749 | ||
750 | //if chi2 good enough, stop here: | |
266829be | 751 | if(lchi2 < fGoodHitChi2[fVertexConstraint]) |
108615fc | 752 | return 2; |
753 | ||
754 | return 1; | |
755 | } | |
756 | ||
757 | return 0; | |
758 | ||
759 | } | |
760 | ||
761 | Double_t AliL3ConfMapper::CalcDistance(const AliL3ConfMapPoint *hit1,const AliL3ConfMapPoint *hit2) const | |
762 | { | |
763 | //Return distance between two clusters, defined by Pablo | |
764 | ||
765 | Double_t phi_diff = fabs( hit1->GetPhi() - hit2->GetPhi() ); | |
5a31e9df | 766 | if (phi_diff > AliL3Transform::Pi()) phi_diff = AliL3Transform::TwoPi() - phi_diff; |
108615fc | 767 | |
5a31e9df | 768 | return AliL3Transform::ToDeg()*fabs((Float_t)((hit1->GetPadRow() - hit2->GetPadRow()) * (phi_diff + fabs( hit1->GetEta() - hit2->GetEta())))); |
108615fc | 769 | } |
770 | ||
771 | Bool_t AliL3ConfMapper::VerifyRange(const AliL3ConfMapPoint *hit1,const AliL3ConfMapPoint *hit2) const | |
772 | { | |
773 | //Check if the hit are within reasonable range in phi and eta | |
774 | Double_t dphi,deta;//maxphi=0.1,maxeta=0.1; | |
775 | dphi = fabs(hit1->GetPhi() - hit2->GetPhi()); | |
5a31e9df | 776 | if(dphi > AliL3Transform::Pi()) dphi = fabs(AliL3Transform::TwoPi() - dphi); |
108615fc | 777 | if(dphi > fMaxPhi) return false; |
778 | ||
779 | deta = fabs(hit1->GetEta() - hit2->GetEta()); | |
780 | if(deta > fMaxEta) return false; | |
781 | ||
782 | return true; | |
783 | ||
784 | } | |
785 | ||
3e87ef69 | 786 | Double_t AliL3ConfMapper::TrackletAngle(AliL3ConfMapTrack *track,Int_t n) const |
108615fc | 787 | { |
788 | // Returns the angle 'between' the last three points (started at point number n) on this track. | |
3e87ef69 | 789 | |
790 | if(n > track->GetNumberOfPoints()) | |
791 | n = track->GetNumberOfPoints(); | |
792 | ||
793 | if(n<3) | |
794 | return 0; | |
795 | ||
108615fc | 796 | Double_t x1[2]; |
797 | Double_t x2[2]; | |
3e87ef69 | 798 | Double_t x3[2]; |
799 | Double_t angle1,angle2; | |
800 | Int_t counter=0; | |
801 | for(track->StartLoop(); track->LoopDone(); track->GetNextHit()) | |
802 | { | |
b1ed0288 | 803 | AliL3ConfMapPoint *p = (AliL3ConfMapPoint*)track->GetCurrentHit(); |
3e87ef69 | 804 | if( (n-1) == counter) |
805 | { | |
806 | x1[0] = p->GetX(); | |
807 | x1[1] = p->GetY(); | |
808 | } | |
809 | else if( (n-2) == counter) | |
810 | { | |
811 | x2[0] = p->GetX(); | |
812 | x2[1] = p->GetY(); | |
813 | } | |
814 | else if( (n-3) == counter) | |
815 | { | |
816 | x3[0] = p->GetX(); | |
817 | x3[1] = p->GetY(); | |
818 | } | |
819 | counter++; | |
820 | } | |
821 | ||
822 | angle1 = atan2(x2[1]-x3[1],x2[0]-x3[0]); | |
823 | angle2 = atan2(x1[1]-x2[1],x1[0]-x2[0]); | |
824 | ||
825 | return fabs(angle1-angle2); | |
826 | ||
827 | /* | |
828 | Double_t x1[2]; | |
829 | Double_t x2[2]; | |
108615fc | 830 | Double_t angle1,angle2; |
831 | TObjArray *hits = track->GetHits(); | |
832 | ||
833 | if (n > track->GetNumberOfPoints()) { | |
834 | n = track->GetNumberOfPoints(); | |
835 | } | |
836 | ||
837 | if (n<3) | |
838 | return 0; | |
839 | ||
840 | ||
841 | x1[0] = ((AliL3ConfMapPoint *)hits->At(n-2))->GetX() - ((AliL3ConfMapPoint *)hits->At(n-3))->GetX(); | |
842 | x1[1] = ((AliL3ConfMapPoint *)hits->At(n-2))->GetY() - ((AliL3ConfMapPoint *)hits->At(n-3))->GetY(); | |
843 | ||
844 | x2[0] = ((AliL3ConfMapPoint *)hits->At(n-1))->GetX() - ((AliL3ConfMapPoint *)hits->At(n-2))->GetX(); | |
845 | x2[1] = ((AliL3ConfMapPoint *)hits->At(n-1))->GetY() - ((AliL3ConfMapPoint *)hits->At(n-2))->GetY(); | |
846 | ||
847 | angle1 = atan2(x1[1],x1[0]); | |
848 | angle2 = atan2(x2[1],x1[0]); | |
849 | return fabs(angle1-angle2); | |
850 | */ | |
851 | } | |
852 | ||
853 | Int_t AliL3ConfMapper::FillTracks() | |
854 | { | |
855 | //Fill track parameters. Which basically means do a fit of helix in real space, | |
856 | //which should be done in order to get nice tracks. | |
857 | ||
858 | Int_t num_of_tracks = nTracks; | |
108615fc | 859 | if(nTracks == 0) |
860 | { | |
861 | LOG(AliL3Log::kError,"AliL3ConfMapper::FillTracks","nTracks")<<AliL3Log::kDec<< | |
862 | "No tracks found!!"<<ENDLOG; | |
863 | return 0; | |
864 | } | |
b1ed0288 | 865 | |
866 | LOG(AliL3Log::kInformational,"AliL3ConfMapper::FillTracks","nTracks")<<AliL3Log::kDec<< | |
867 | "Number of found tracks: "<<nTracks<<ENDLOG; | |
108615fc | 868 | |
869 | // fTrack->Sort(); | |
b1ed0288 | 870 | for(Int_t i=0; i<num_of_tracks; i++) |
108615fc | 871 | { |
872 | AliL3ConfMapTrack *track = (AliL3ConfMapTrack*)fTrack->GetTrack(i); | |
873 | track->Fill(fVertex,fMaxDca); | |
874 | } | |
875 | return 1; | |
108615fc | 876 | } |
877 | ||
878 | Double_t AliL3ConfMapper::CpuTime() | |
879 | { | |
880 | //Return the Cputime in seconds. | |
355debe1 | 881 | struct timeval tv; |
882 | gettimeofday( &tv, NULL ); | |
883 | return tv.tv_sec+(((Double_t)tv.tv_usec)/1000000.); | |
108615fc | 884 | } |