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13918578 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-2003, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
bf6adc12 | 16 | /* $Id$ */ |
17 | ||
13918578 | 18 | //////////////////////////////////////////////////// |
19 | // Stand alone tracker class // | |
20 | // Origin: Elisabetta Crescio // | |
21 | // e-mail: crescio@to.infn.it // | |
22 | // tracks are saved as AliITStrackV2 objects // | |
23 | //////////////////////////////////////////////////// | |
24 | ||
aa4b78e1 | 25 | #include <stdlib.h> |
bf6adc12 | 26 | |
27 | #include <TArrayI.h> | |
13918578 | 28 | #include <TBranch.h> |
13918578 | 29 | #include <TObjArray.h> |
30 | #include <TTree.h> | |
bf6adc12 | 31 | |
af885e0f | 32 | #include "AliESDEvent.h" |
bf6adc12 | 33 | #include "AliESDVertex.h" |
34 | #include "AliESDtrack.h" | |
bf6adc12 | 35 | #include "AliITSVertexer.h" |
13918578 | 36 | #include "AliITSclusterTable.h" |
00a7cc50 | 37 | #include "AliITSRecPoint.h" |
cc088660 | 38 | #include "AliITSgeomTGeo.h" |
13918578 | 39 | #include "AliITStrackSA.h" |
bf6adc12 | 40 | #include "AliITStrackerSA.h" |
e340bb86 | 41 | #include "AliITSReconstructor.h" |
bf6adc12 | 42 | #include "AliRun.h" |
13918578 | 43 | |
44 | ClassImp(AliITStrackerSA) | |
45 | ||
46 | //____________________________________________________________________________ | |
e399f961 | 47 | AliITStrackerSA::AliITStrackerSA():AliITStrackerMI(), |
48 | fPhiEstimate(0), | |
1966f03c | 49 | fITSStandAlone(0), |
e399f961 | 50 | fLambdac(0), |
51 | fPhic(0), | |
52 | fCoef1(0), | |
53 | fCoef2(0), | |
54 | fCoef3(0), | |
55 | fNloop(0), | |
56 | fPhiWin(0), | |
57 | fLambdaWin(0), | |
58 | fVert(0), | |
59 | fVertexer(0), | |
e399f961 | 60 | fListOfTracks(0), |
deae0246 | 61 | fListOfSATracks(0), |
e399f961 | 62 | fITSclusters(0), |
12b1afb7 | 63 | fInwardFlag(0), |
b8ed1a92 | 64 | fOuterStartLayer(0), |
12b1afb7 | 65 | fInnerStartLayer(5), |
66 | fMinNPoints(0), | |
3733ccd2 | 67 | fMinQ(0.), |
e399f961 | 68 | fCluLayer(0), |
69 | fCluCoord(0){ | |
13918578 | 70 | // Default constructor |
71 | Init(); | |
627b6db6 | 72 | |
13918578 | 73 | } |
2257f27e | 74 | //____________________________________________________________________________ |
cc088660 | 75 | AliITStrackerSA::AliITStrackerSA(const Char_t *geom):AliITStrackerMI(0), |
e399f961 | 76 | fPhiEstimate(0), |
1966f03c | 77 | fITSStandAlone(0), |
e399f961 | 78 | fLambdac(0), |
79 | fPhic(0), | |
80 | fCoef1(0), | |
81 | fCoef2(0), | |
82 | fCoef3(0), | |
83 | fNloop(0), | |
84 | fPhiWin(0), | |
85 | fLambdaWin(0), | |
86 | fVert(0), | |
87 | fVertexer(0), | |
e399f961 | 88 | fListOfTracks(0), |
deae0246 | 89 | fListOfSATracks(0), |
e399f961 | 90 | fITSclusters(0), |
12b1afb7 | 91 | fInwardFlag(0), |
b8ed1a92 | 92 | fOuterStartLayer(0), |
12b1afb7 | 93 | fInnerStartLayer(5), |
94 | fMinNPoints(0), | |
3733ccd2 | 95 | fMinQ(0.), |
e399f961 | 96 | fCluLayer(0), |
97 | fCluCoord(0) | |
2257f27e | 98 | { |
99 | // Standard constructor (Vertex is known and passed to this obj.) | |
cc088660 | 100 | if (geom) { |
101 | AliWarning("\"geom\" is actually a dummy argument !"); | |
102 | } | |
103 | ||
2257f27e | 104 | Init(); |
105 | fVert = 0; | |
627b6db6 | 106 | |
2257f27e | 107 | } |
108 | ||
13918578 | 109 | //____________________________________________________________________________ |
cc088660 | 110 | AliITStrackerSA::AliITStrackerSA(const Char_t *geom, AliESDVertex *vert):AliITStrackerMI(0), |
e399f961 | 111 | fPhiEstimate(0), |
1966f03c | 112 | fITSStandAlone(0), |
e399f961 | 113 | fLambdac(0), |
114 | fPhic(0), | |
115 | fCoef1(0), | |
116 | fCoef2(0), | |
117 | fCoef3(0), | |
118 | fNloop(0), | |
119 | fPhiWin(0), | |
120 | fLambdaWin(0), | |
121 | fVert(vert), | |
122 | fVertexer(0), | |
e399f961 | 123 | fListOfTracks(0), |
deae0246 | 124 | fListOfSATracks(0), |
e399f961 | 125 | fITSclusters(0), |
12b1afb7 | 126 | fInwardFlag(0), |
b8ed1a92 | 127 | fOuterStartLayer(0), |
12b1afb7 | 128 | fInnerStartLayer(5), |
129 | fMinNPoints(0), | |
3733ccd2 | 130 | fMinQ(0.), |
e399f961 | 131 | fCluLayer(0), |
1966f03c | 132 | fCluCoord(0) |
13918578 | 133 | { |
134 | // Standard constructor (Vertex is known and passed to this obj.) | |
cc088660 | 135 | if (geom) { |
136 | AliWarning("\"geom\" is actually a dummy argument !"); | |
137 | } | |
13918578 | 138 | Init(); |
627b6db6 | 139 | |
13918578 | 140 | } |
141 | ||
13918578 | 142 | //____________________________________________________________________________ |
cc088660 | 143 | AliITStrackerSA::AliITStrackerSA(const Char_t *geom, AliITSVertexer *vertexer):AliITStrackerMI(0), |
e399f961 | 144 | fPhiEstimate(0), |
1966f03c | 145 | fITSStandAlone(0), |
e399f961 | 146 | fLambdac(0), |
147 | fPhic(0), | |
148 | fCoef1(0), | |
149 | fCoef2(0), | |
150 | fCoef3(0), | |
151 | fNloop(0), | |
152 | fPhiWin(0), | |
153 | fLambdaWin(0), | |
154 | fVert(), | |
155 | fVertexer(vertexer), | |
e399f961 | 156 | fListOfTracks(0), |
deae0246 | 157 | fListOfSATracks(0), |
e399f961 | 158 | fITSclusters(0), |
12b1afb7 | 159 | fInwardFlag(0), |
b8ed1a92 | 160 | fOuterStartLayer(0), |
12b1afb7 | 161 | fInnerStartLayer(5), |
162 | fMinNPoints(0), | |
3733ccd2 | 163 | fMinQ(0.), |
e399f961 | 164 | fCluLayer(0), |
1966f03c | 165 | fCluCoord(0) |
13918578 | 166 | { |
167 | // Standard constructor (Vertex is unknown - vertexer is passed to this obj) | |
cc088660 | 168 | if (geom) { |
169 | AliWarning("\"geom\" is actually a dummy argument !"); | |
170 | } | |
13918578 | 171 | Init(); |
172 | fVertexer = vertexer; | |
627b6db6 | 173 | |
13918578 | 174 | } |
175 | ||
176 | //____________________________________________________________________________ | |
e399f961 | 177 | AliITStrackerSA::AliITStrackerSA(const AliITStrackerSA& tracker):AliITStrackerMI(), |
178 | fPhiEstimate(tracker.fPhiEstimate), | |
1966f03c | 179 | fITSStandAlone(tracker.fITSStandAlone), |
e399f961 | 180 | fLambdac(tracker.fLambdac), |
181 | fPhic(tracker.fPhic), | |
182 | fCoef1(tracker.fCoef1), | |
183 | fCoef2(tracker.fCoef2), | |
184 | fCoef3(tracker.fCoef3), | |
185 | fNloop(tracker.fNloop), | |
186 | fPhiWin(tracker.fPhiWin), | |
187 | fLambdaWin(tracker.fLambdaWin), | |
188 | fVert(tracker.fVert), | |
189 | fVertexer(tracker.fVertexer), | |
e399f961 | 190 | fListOfTracks(tracker.fListOfTracks), |
deae0246 | 191 | fListOfSATracks(tracker.fListOfSATracks), |
e399f961 | 192 | fITSclusters(tracker.fITSclusters), |
12b1afb7 | 193 | fInwardFlag(tracker.fInwardFlag), |
b8ed1a92 | 194 | fOuterStartLayer(tracker.fOuterStartLayer), |
12b1afb7 | 195 | fInnerStartLayer(tracker.fInnerStartLayer), |
196 | fMinNPoints(tracker.fMinNPoints), | |
3733ccd2 | 197 | fMinQ(tracker.fMinQ), |
e399f961 | 198 | fCluLayer(tracker.fCluLayer), |
199 | fCluCoord(tracker.fCluCoord) { | |
13918578 | 200 | // Copy constructor |
13918578 | 201 | for(Int_t i=0;i<2;i++){ |
202 | fPoint1[i]=tracker.fPoint1[i]; | |
203 | fPoint2[i]=tracker.fPoint2[i]; | |
204 | fPoint3[i]=tracker.fPoint3[i]; | |
205 | fPointc[i]=tracker.fPointc[i]; | |
206 | } | |
13918578 | 207 | if(tracker.fVertexer && tracker.fVert){ |
d681bb2d | 208 | fVert = new AliESDVertex(*tracker.fVert); |
13918578 | 209 | } |
210 | else { | |
211 | fVert = tracker.fVert; | |
212 | } | |
cc088660 | 213 | for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){ |
7e5bf5af | 214 | fCluLayer[i] = tracker.fCluLayer[i]; |
215 | fCluCoord[i] = tracker.fCluCoord[i]; | |
216 | } | |
13918578 | 217 | } |
7d62fb64 | 218 | //______________________________________________________________________ |
e399f961 | 219 | AliITStrackerSA& AliITStrackerSA::operator=(const AliITStrackerSA& source){ |
220 | // Assignment operator. | |
221 | this->~AliITStrackerSA(); | |
222 | new(this) AliITStrackerSA(source); | |
223 | return *this; | |
224 | ||
7d62fb64 | 225 | } |
13918578 | 226 | |
227 | //____________________________________________________________________________ | |
228 | AliITStrackerSA::~AliITStrackerSA(){ | |
229 | // destructor | |
d681bb2d | 230 | // if fVertexer is not null, the AliESDVertex obj. is owned by this class |
13918578 | 231 | // and is deleted here |
232 | if(fVertexer){ | |
233 | if(fVert)delete fVert; | |
234 | } | |
235 | fVert = 0; | |
236 | fVertexer = 0; | |
7e5bf5af | 237 | |
13918578 | 238 | if(fPhiWin)delete []fPhiWin; |
239 | if(fLambdaWin)delete []fLambdaWin; | |
4e05ab9a | 240 | fListOfTracks->Delete(); |
adda6c2b | 241 | delete fListOfTracks; |
deae0246 | 242 | fListOfSATracks->Delete(); |
243 | delete fListOfSATracks; | |
7e5bf5af | 244 | if(fCluLayer){ |
cc088660 | 245 | for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){ |
7e5bf5af | 246 | if(fCluLayer[i]){ |
247 | fCluLayer[i]->Delete(); | |
248 | delete fCluLayer[i]; | |
249 | } | |
250 | } | |
251 | delete [] fCluLayer; | |
252 | } | |
253 | if(fCluCoord){ | |
cc088660 | 254 | for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){ |
7e5bf5af | 255 | if(fCluCoord[i]){ |
256 | fCluCoord[i]->Delete(); | |
257 | delete fCluCoord[i]; | |
258 | } | |
259 | } | |
260 | delete [] fCluCoord; | |
627b6db6 | 261 | } |
7e5bf5af | 262 | |
7e5bf5af | 263 | } |
13918578 | 264 | |
1966f03c | 265 | //____________________________________________________________________________ |
af885e0f | 266 | Int_t AliITStrackerSA::Clusters2Tracks(AliESDEvent *event){ |
1966f03c | 267 | // This method is used to find and fit the tracks. By default the corresponding |
268 | // method in the parent class is invoked. In this way a combined tracking | |
269 | // TPC+ITS is performed. If the flag fITSStandAlone is true, the tracking | |
270 | // is done in the ITS only. In the standard reconstruction chain this option | |
271 | // can be set via AliReconstruction::SetOption("ITS","onlyITS") | |
272 | Int_t rc=0; | |
273 | if(!fITSStandAlone){ | |
274 | rc=AliITStrackerMI::Clusters2Tracks(event); | |
275 | } | |
276 | else { | |
277 | AliDebug(1,"Stand Alone flag set: doing tracking in ITS alone\n"); | |
278 | } | |
279 | if(!rc) rc=FindTracks(event); | |
280 | return rc; | |
281 | } | |
282 | ||
13918578 | 283 | //____________________________________________________________________________ |
284 | void AliITStrackerSA::Init(){ | |
285 | // Reset all data members | |
286 | fPhiEstimate=0; | |
287 | for(Int_t i=0;i<3;i++){fPoint1[i]=0;fPoint2[i]=0;fPoint3[i]=0;} | |
288 | fLambdac=0; | |
289 | fPhic=0; | |
290 | fCoef1=0; | |
291 | fCoef2=0; | |
292 | fCoef3=0; | |
293 | fPointc[0]=0; | |
294 | fPointc[1]=0; | |
295 | fVert = 0; | |
296 | fVertexer = 0; | |
5b4dedce | 297 | Int_t nLoops=AliITSReconstructor::GetRecoParam()->GetNLoopsSA(); |
298 | if(nLoops==33){ | |
299 | SetFixedWindowSizes(); | |
300 | }else{ | |
301 | Double_t phimin=AliITSReconstructor::GetRecoParam()->GetMinPhiSA(); | |
302 | Double_t phimax=AliITSReconstructor::GetRecoParam()->GetMaxPhiSA(); | |
303 | Double_t lambmin=AliITSReconstructor::GetRecoParam()->GetMinLambdaSA(); | |
304 | Double_t lambmax=AliITSReconstructor::GetRecoParam()->GetMaxLambdaSA(); | |
305 | SetCalculatedWindowSizes(nLoops,phimin,phimax,lambmin,lambmax); | |
306 | } | |
3733ccd2 | 307 | fMinQ=AliITSReconstructor::GetRecoParam()->GetSAMinClusterCharge(); |
2257f27e | 308 | fITSclusters = 0; |
12b1afb7 | 309 | SetOuterStartLayer(1); |
1966f03c | 310 | SetSAFlag(kFALSE); |
4e05ab9a | 311 | fListOfTracks=new TObjArray(0,0); |
deae0246 | 312 | fListOfSATracks=new TObjArray(0,0); |
7e5bf5af | 313 | fCluLayer = 0; |
314 | fCluCoord = 0; | |
12b1afb7 | 315 | fMinNPoints = 3; |
627b6db6 | 316 | } |
13918578 | 317 | //_______________________________________________________________________ |
318 | void AliITStrackerSA::ResetForFinding(){ | |
319 | // Reset data members used in all loops during track finding | |
320 | fPhiEstimate=0; | |
321 | for(Int_t i=0;i<3;i++){fPoint1[i]=0;fPoint2[i]=0;fPoint3[i]=0;} | |
322 | fLambdac=0; | |
323 | fPhic=0; | |
324 | fCoef1=0; | |
325 | fCoef2=0; | |
326 | fCoef3=0; | |
327 | fPointc[0]=0; | |
328 | fPointc[1]=0; | |
4e05ab9a | 329 | fListOfTracks->Delete(); |
deae0246 | 330 | fListOfSATracks->Delete(); |
13918578 | 331 | } |
bef31448 | 332 | |
7e5bf5af | 333 | |
2257f27e | 334 | |
bef31448 | 335 | //______________________________________________________________________ |
af885e0f | 336 | Int_t AliITStrackerSA::FindTracks(AliESDEvent* event){ |
bef31448 | 337 | |
7e5bf5af | 338 | // Track finder using the ESD object |
6f178e14 | 339 | |
340 | ||
deae0246 | 341 | |
2257f27e | 342 | if(!fITSclusters){ |
343 | Fatal("FindTracks","ITS cluster tree is not accessed - Abort!!!\n Please use method SetClusterTree to pass the pointer to the tree\n"); | |
344 | return -1; | |
bef31448 | 345 | } |
7e5bf5af | 346 | //Reads event and mark clusters of traks already found, with flag kITSin |
ebda3140 | 347 | Int_t nentr=event->GetNumberOfTracks(); |
5a03f353 | 348 | if(AliITSReconstructor::GetRecoParam()->GetSAUseAllClusters()==kFALSE) { |
349 | while (nentr--) { | |
350 | AliESDtrack *track=event->GetTrack(nentr); | |
5af4a2d0 | 351 | if ((track->GetStatus()&AliESDtrack::kITSin) == AliESDtrack::kITSin){ |
5a03f353 | 352 | Int_t idx[12]; |
353 | Int_t ncl = track->GetITSclusters(idx); | |
354 | for(Int_t k=0;k<ncl;k++){ | |
355 | AliITSRecPoint* cll = (AliITSRecPoint*)GetCluster(idx[k]); | |
356 | cll->SetBit(kSAflag); | |
357 | } | |
ebda3140 | 358 | } |
359 | } | |
360 | } | |
361 | //Get primary vertex | |
362 | Double_t primaryVertex[3]; | |
363 | event->GetVertex()->GetXYZ(primaryVertex); | |
364 | //Creates TClonesArray with clusters for each layer. The clusters already used | |
365 | //by AliITStrackerMI are not considered | |
deae0246 | 366 | Int_t nclusters[AliITSgeomTGeo::kNLayers]={0,0,0,0,0,0}; |
367 | Int_t dmar[AliITSgeomTGeo::kNLayers]={0,0,0,0,0,0}; | |
ebda3140 | 368 | if (fCluLayer == 0) { |
deae0246 | 369 | fCluLayer = new TClonesArray*[AliITSgeomTGeo::kNLayers]; |
370 | fCluCoord = new TClonesArray*[AliITSgeomTGeo::kNLayers]; | |
ebda3140 | 371 | for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++) { |
372 | fCluLayer[i]=0; | |
373 | fCluCoord[i]=0; | |
374 | } | |
375 | } | |
ebda3140 | 376 | for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){ |
ebda3140 | 377 | AliITSlayer &layer=fgLayers[i]; |
25be2b21 | 378 | if (!AliITSReconstructor::GetRecoParam()->GetLayersToSkip(i)) { |
379 | for(Int_t cli=0;cli<layer.GetNumberOfClusters();cli++){ | |
380 | AliITSRecPoint* cls = (AliITSRecPoint*)layer.GetCluster(cli); | |
381 | if(cls->TestBit(kSAflag)==kTRUE) continue; //clusters used by TPC prol. | |
382 | if(cls->GetQ()==0) continue; //fake clusters dead zones | |
3733ccd2 | 383 | if(i>1 && cls->GetQ()<=fMinQ) continue; // cut on SDD and SSD cluster charge |
25be2b21 | 384 | nclusters[i]++; |
385 | } | |
ebda3140 | 386 | } |
387 | dmar[i]=0; | |
388 | delete fCluLayer[i]; | |
389 | fCluLayer[i] = new TClonesArray("AliITSRecPoint",nclusters[i]); | |
390 | delete fCluCoord[i]; | |
391 | fCluCoord[i] = new TClonesArray("AliITSclusterTable",nclusters[i]); | |
392 | } | |
393 | ||
394 | for(Int_t ilay=0;ilay<AliITSgeomTGeo::GetNLayers();ilay++){ | |
395 | TClonesArray &clulay = *fCluLayer[ilay]; | |
396 | TClonesArray &clucoo = *fCluCoord[ilay]; | |
397 | AliITSlayer &layer=fgLayers[ilay]; | |
25be2b21 | 398 | if (!AliITSReconstructor::GetRecoParam()->GetLayersToSkip(ilay)) { |
399 | for(Int_t cli=0;cli<layer.GetNumberOfClusters();cli++){ | |
400 | AliITSRecPoint* cls = (AliITSRecPoint*)layer.GetCluster(cli); | |
401 | if(cls->TestBit(kSAflag)==kTRUE) continue; | |
402 | if(cls->GetQ()==0) continue; | |
3733ccd2 | 403 | if(ilay>1 && cls->GetQ()<=fMinQ) continue; |
25be2b21 | 404 | Double_t phi=0;Double_t lambda=0; |
405 | Float_t x=0;Float_t y=0;Float_t z=0; | |
406 | Float_t sx=0;Float_t sy=0;Float_t sz=0; | |
407 | GetCoorAngles(cls,phi,lambda,x,y,z,primaryVertex); | |
408 | GetCoorErrors(cls,sx,sy,sz); | |
409 | new (clulay[dmar[ilay]]) AliITSRecPoint(*cls); | |
410 | new (clucoo[dmar[ilay]]) AliITSclusterTable(x,y,z,sx,sy,sz,phi,lambda,cli); | |
411 | dmar[ilay]++; | |
412 | } | |
ebda3140 | 413 | } |
414 | } | |
7e5bf5af | 415 | |
6f178e14 | 416 | // track counter |
417 | Int_t ntrack=0; | |
418 | ||
deae0246 | 419 | static Int_t nClusLay[AliITSgeomTGeo::kNLayers];//counter for clusters on each layer |
6f178e14 | 420 | |
12b1afb7 | 421 | if(AliITSReconstructor::GetRecoParam()->GetAllowProlongationWithEmptyRoad()) fMinNPoints=2; |
7e5bf5af | 422 | |
12b1afb7 | 423 | |
424 | // loop on minimum number of points | |
425 | for(Int_t iMinNPoints=AliITSgeomTGeo::GetNLayers(); iMinNPoints>=fMinNPoints; iMinNPoints--) { | |
426 | ||
427 | if(!fInwardFlag){ // Tracking outwards from the inner layers | |
428 | // loop on starting layer for track finding | |
429 | for(Int_t innLay=0; innLay<=fOuterStartLayer; innLay++) { | |
430 | if(AliITSReconstructor::GetRecoParam()->GetLayersToSkip(innLay)) continue; | |
431 | Int_t minNPoints=iMinNPoints-innLay; | |
432 | for(Int_t i=innLay+1;i<AliITSgeomTGeo::GetNLayers();i++) | |
433 | if(AliITSReconstructor::GetRecoParam()->GetLayersToSkip(i)) | |
434 | minNPoints--; | |
435 | if(minNPoints<fMinNPoints) continue; | |
436 | ||
437 | // loop on phi and lambda window size | |
438 | for(Int_t nloop=0;nloop<fNloop;nloop++){ | |
439 | Int_t nclInnLay=fCluLayer[innLay]->GetEntries(); | |
440 | while(nclInnLay--){ | |
441 | ResetForFinding(); | |
442 | Bool_t useRP=SetFirstPoint(innLay,nclInnLay,primaryVertex); | |
443 | if(!useRP) continue; | |
444 | AliITStrackSA* trs = new AliITStrackSA(); | |
445 | ||
446 | Int_t pflag=0; | |
447 | Int_t kk; | |
448 | for(kk=0;kk<AliITSgeomTGeo::GetNLayers();kk++) nClusLay[kk] = 0; | |
449 | ||
450 | kk=0; | |
451 | nClusLay[kk] = SearchClusters(innLay,fPhiWin[nloop],fLambdaWin[nloop], | |
452 | trs,primaryVertex[2],pflag); | |
453 | for(Int_t nextLay=innLay+1; nextLay<AliITSgeomTGeo::GetNLayers(); nextLay++) { | |
454 | kk++; | |
455 | nClusLay[kk] = SearchClusters(nextLay,fPhiWin[nloop],fLambdaWin[nloop], | |
456 | trs,primaryVertex[2],pflag); | |
457 | if(nClusLay[kk]!=0){ | |
458 | pflag=1; | |
459 | if(kk==1) { | |
460 | fPoint3[0]=fPointc[0]; | |
461 | fPoint3[1]=fPointc[1]; | |
462 | } else { | |
463 | UpdatePoints(); | |
464 | } | |
465 | } | |
466 | } | |
467 | ||
468 | Int_t layOK=0; | |
469 | for(Int_t nnp=0;nnp<AliITSgeomTGeo::GetNLayers()-innLay;nnp++){ | |
470 | if(nClusLay[nnp]!=0) layOK+=1; | |
471 | } | |
472 | if(layOK>=minNPoints){ | |
473 | //printf("---NPOINTS: %d; MAP: %d %d %d %d %d %d\n",layOK,nClusLay[0],nClusLay[1],nClusLay[2],nClusLay[3],nClusLay[4],nClusLay[5]); | |
474 | AliITStrackV2* tr2 = 0; | |
475 | tr2 = FitTrack(trs,primaryVertex); | |
476 | if(!tr2) continue; | |
477 | //printf("---NPOINTS fit: %d\n",tr2->GetNumberOfClusters()); | |
478 | ||
479 | StoreTrack(tr2,event); | |
480 | ntrack++; | |
481 | ||
482 | } | |
483 | ||
484 | delete trs; | |
485 | }//end loop on clusters of innLay | |
486 | } //end loop on window sizes | |
487 | } //end loop on innLay | |
488 | }else{// Tracking inwards from the outer layers | |
489 | // loop on starting layer for track finding | |
490 | for(Int_t outLay=AliITSgeomTGeo::GetNLayers()-1; outLay>=fInnerStartLayer; outLay--) { | |
491 | ||
492 | if(AliITSReconstructor::GetRecoParam()->GetLayersToSkip(outLay)) continue; | |
493 | Int_t minNPoints=iMinNPoints-(AliITSgeomTGeo::GetNLayers()-1-outLay); | |
494 | for(Int_t i=0;i<outLay-1;i++) | |
495 | if(AliITSReconstructor::GetRecoParam()->GetLayersToSkip(i)) | |
496 | minNPoints--; | |
497 | if(minNPoints<fMinNPoints) continue; | |
ebda3140 | 498 | |
12b1afb7 | 499 | // loop on phi and lambda window size |
500 | for(Int_t nloop=0;nloop<fNloop;nloop++){ | |
501 | Int_t nclOutLay=fCluLayer[outLay]->GetEntries(); | |
502 | while(nclOutLay--){ | |
503 | ResetForFinding(); | |
504 | Bool_t useRP=SetFirstPoint(outLay,nclOutLay,primaryVertex); | |
505 | if(!useRP) continue; | |
506 | AliITStrackSA* trs = new AliITStrackSA(); | |
507 | ||
508 | Int_t pflag=0; | |
509 | Int_t kk; | |
510 | for(kk=0;kk<AliITSgeomTGeo::GetNLayers();kk++) nClusLay[kk] = 0; | |
511 | ||
512 | kk=0; | |
513 | nClusLay[kk] = SearchClusters(outLay,fPhiWin[nloop],fLambdaWin[nloop], | |
b8ed1a92 | 514 | trs,primaryVertex[2],pflag); |
12b1afb7 | 515 | for(Int_t nextLay=outLay-1; nextLay>=0; nextLay--) { |
516 | kk++; | |
517 | nClusLay[kk] = SearchClusters(nextLay,fPhiWin[nloop],fLambdaWin[nloop], | |
518 | trs,primaryVertex[2],pflag); | |
519 | if(nClusLay[kk]!=0){ | |
520 | pflag=1; | |
521 | if(kk==1) { | |
522 | fPoint3[0]=fPointc[0]; | |
523 | fPoint3[1]=fPointc[1]; | |
524 | } else { | |
525 | UpdatePoints(); | |
526 | } | |
ebda3140 | 527 | } |
528 | } | |
ebda3140 | 529 | |
12b1afb7 | 530 | Int_t layOK=0; |
531 | for(Int_t nnp=outLay; nnp>=0; nnp--){ | |
532 | if(nClusLay[nnp]!=0) layOK+=1; | |
533 | } | |
534 | if(layOK>=minNPoints){ | |
535 | //printf("---NPOINTS: %d; MAP: %d %d %d %d %d %d\n",layOK,nClusLay[0],nClusLay[1],nClusLay[2],nClusLay[3],nClusLay[4],nClusLay[5]); | |
536 | AliITStrackV2* tr2 = 0; | |
537 | tr2 = FitTrack(trs,primaryVertex); | |
538 | if(!tr2) continue; | |
539 | //printf("---NPOINTS fit: %d\n",tr2->GetNumberOfClusters()); | |
540 | ||
541 | StoreTrack(tr2,event); | |
542 | ntrack++; | |
543 | ||
544 | } | |
ebda3140 | 545 | |
12b1afb7 | 546 | delete trs; |
ebda3140 | 547 | }//end loop on clusters of innLay |
12b1afb7 | 548 | } //end loop on window sizes |
549 | } //end loop on innLay | |
550 | } // end if (fInwardFlag) | |
551 | }//end loop on min points | |
5a03f353 | 552 | |
8403ece4 | 553 | // search for 1-point tracks in SPD, only for cosmics |
5a03f353 | 554 | // (A.Dainese 21.03.08) |
555 | if(AliITSReconstructor::GetRecoParam()->GetSAOnePointTracks() && | |
556 | TMath::Abs(event->GetMagneticField())<0.01) { | |
8403ece4 | 557 | Int_t outerLayer=1; // only SPD |
558 | for(Int_t innLay=0; innLay<=TMath::Min(1,fOuterStartLayer); innLay++) { | |
5a03f353 | 559 | // counter for clusters on each layer |
deae0246 | 560 | |
5a03f353 | 561 | for(Int_t nloop=0;nloop<fNloop;nloop++){ |
562 | Int_t nclInnLay=fCluLayer[innLay]->GetEntries(); | |
563 | while(nclInnLay--){ //loop starting from layer innLay | |
564 | ResetForFinding(); | |
12b1afb7 | 565 | Bool_t useRP=SetFirstPoint(innLay,nclInnLay,primaryVertex); |
566 | if(!useRP) continue; | |
5a03f353 | 567 | AliITStrackSA* trs = new AliITStrackSA(); |
12b1afb7 | 568 | |
569 | Int_t pflag=0; | |
5a03f353 | 570 | Int_t kk; |
deae0246 | 571 | for(kk=0;kk<AliITSgeomTGeo::GetNLayers();kk++) nClusLay[kk] = 0; |
5a03f353 | 572 | |
573 | kk=0; | |
deae0246 | 574 | nClusLay[kk] = SearchClusters(innLay,fPhiWin[nloop],fLambdaWin[nloop], |
5a03f353 | 575 | trs,primaryVertex[2],pflag); |
8403ece4 | 576 | for(Int_t nextLay=innLay+1; nextLay<=outerLayer; nextLay++) { |
5a03f353 | 577 | kk++; |
deae0246 | 578 | nClusLay[kk] = SearchClusters(nextLay,fPhiWin[nloop],fLambdaWin[nloop], |
5a03f353 | 579 | trs,primaryVertex[2],pflag); |
deae0246 | 580 | if(nClusLay[kk]!=0){ |
5a03f353 | 581 | pflag=1; |
582 | if(kk==1) { | |
583 | fPoint3[0]=fPointc[0]; | |
584 | fPoint3[1]=fPointc[1]; | |
585 | } else { | |
586 | UpdatePoints(); | |
587 | } | |
588 | } | |
589 | } | |
590 | ||
591 | Int_t layOK=0; | |
592 | for(Int_t nnp=0;nnp<AliITSgeomTGeo::GetNLayers()-innLay;nnp++){ | |
deae0246 | 593 | if(nClusLay[nnp]!=0) layOK+=1; |
5a03f353 | 594 | } |
595 | if(layOK==1) { | |
8403ece4 | 596 | //printf("----NPOINTS: %d; MAP: %d %d %d %d %d %d\n",layOK,nClusLay[0],nClusLay[1],nClusLay[2],nClusLay[3],nClusLay[4],nClusLay[5]); |
5a03f353 | 597 | AliITStrackV2* tr2 = 0; |
598 | Bool_t onePoint = kTRUE; | |
599 | tr2 = FitTrack(trs,primaryVertex,onePoint); | |
600 | if(!tr2) continue; | |
8403ece4 | 601 | //printf("----NPOINTS fit: %d\n",tr2->GetNumberOfClusters()); |
5a03f353 | 602 | |
c421499f | 603 | StoreTrack(tr2,event); |
5a03f353 | 604 | ntrack++; |
605 | ||
606 | } | |
607 | ||
608 | delete trs; | |
609 | }//end loop on clusters of innLay | |
610 | } //end loop on window sizes | |
611 | ||
5a03f353 | 612 | } //end loop on innLay |
613 | } // end search 1-point tracks | |
ebda3140 | 614 | |
bef31448 | 615 | Info("FindTracks","Number of found tracks: %d",event->GetNumberOfTracks()); |
2257f27e | 616 | return 0; |
bef31448 | 617 | |
618 | } | |
7e5bf5af | 619 | |
13918578 | 620 | //________________________________________________________________________ |
621 | ||
5a03f353 | 622 | AliITStrackV2* AliITStrackerSA::FitTrack(AliITStrackSA* tr,Double_t *primaryVertex,Bool_t onePoint) { |
ebda3140 | 623 | //fit of the found track (most general case, also <6 points, layers missing) |
624 | // A.Dainese 16.11.07 | |
13918578 | 625 | |
13918578 | 626 | |
deae0246 | 627 | const Int_t kMaxClu=AliITStrackSA::kMaxNumberOfClusters; |
13918578 | 628 | |
deae0246 | 629 | static Int_t firstmod[AliITSgeomTGeo::kNLayers]; |
630 | ||
631 | static Int_t clind[AliITSgeomTGeo::kNLayers][kMaxClu]; | |
632 | static Int_t clmark[AliITSgeomTGeo::kNLayers][kMaxClu]; | |
633 | static Int_t nnn[AliITSgeomTGeo::kNLayers]; | |
634 | static Int_t kkk[AliITSgeomTGeo::kNLayers]; | |
635 | static Int_t end[AliITSgeomTGeo::kNLayers]; | |
636 | static AliITSRecPoint *listlayer[AliITSgeomTGeo::kNLayers][kMaxClu]; | |
13918578 | 637 | |
ebda3140 | 638 | for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++) { |
b8ed1a92 | 639 | firstmod[i]=AliITSgeomTGeo::GetModuleIndex(i+1,1,1); |
ebda3140 | 640 | nnn[i]=0; |
641 | kkk[i]=0; | |
deae0246 | 642 | end[i]=0; |
643 | for(Int_t j=0;j<kMaxClu; j++){ | |
ebda3140 | 644 | clind[i][j]=0; |
645 | clmark[i][j]=0; | |
deae0246 | 646 | listlayer[i][j]=0; |
647 | } | |
b8ed1a92 | 648 | } |
2755f080 | 649 | |
2755f080 | 650 | |
651 | Int_t nclusters = tr->GetNumberOfClustersSA(); | |
2755f080 | 652 | for(Int_t ncl=0;ncl<nclusters;ncl++){ |
653 | Int_t index = tr->GetClusterIndexSA(ncl); | |
654 | AliITSRecPoint* cl = (AliITSRecPoint*)GetCluster(index); | |
655 | if(cl->TestBit(kSAflag)==kTRUE) cl->ResetBit(kSAflag); | |
656 | Int_t lay = (index & 0xf0000000) >> 28; | |
deae0246 | 657 | Int_t nInLay=end[lay]; |
658 | listlayer[lay][nInLay]=cl; | |
ebda3140 | 659 | Int_t ind=nnn[lay]; |
660 | clind[lay][ind]=index; | |
deae0246 | 661 | end[lay]++; |
2755f080 | 662 | } |
2755f080 | 663 | |
664 | for(Int_t nlay=0;nlay<AliITSgeomTGeo::GetNLayers();nlay++){ | |
665 | for(Int_t ncl=0;ncl<tr->GetNumberOfMarked(nlay);ncl++){ | |
666 | Int_t mark = tr->GetClusterMark(nlay,ncl); | |
ebda3140 | 667 | Int_t ind=kkk[nlay]; |
668 | clmark[nlay][ind]=mark; | |
2755f080 | 669 | } |
670 | } | |
671 | ||
2755f080 | 672 | |
673 | Int_t firstLay=-1,secondLay=-1; | |
2755f080 | 674 | for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++) { |
deae0246 | 675 | if(end[i]==0) { |
2755f080 | 676 | end[i]=1; |
deae0246 | 677 | }else{ |
2755f080 | 678 | if(firstLay==-1) { |
679 | firstLay=i; | |
680 | } else if(secondLay==-1) { | |
681 | secondLay=i; | |
682 | } | |
683 | } | |
684 | } | |
685 | ||
deae0246 | 686 | if(firstLay==-1 || (secondLay==-1 && !onePoint)) return 0; |
687 | ||
2755f080 | 688 | for(Int_t l0=0;l0<end[0];l0++){ //loop on layer 1 |
deae0246 | 689 | AliITSRecPoint* cl0 = (AliITSRecPoint*)listlayer[0][l0]; |
2755f080 | 690 | for(Int_t l1=0;l1<end[1];l1++){ //loop on layer 2 |
deae0246 | 691 | AliITSRecPoint* cl1 = (AliITSRecPoint*)listlayer[1][l1]; |
2755f080 | 692 | for(Int_t l2=0;l2<end[2];l2++){ //loop on layer 3 |
deae0246 | 693 | AliITSRecPoint* cl2 = (AliITSRecPoint*)listlayer[2][l2]; |
2755f080 | 694 | for(Int_t l3=0;l3<end[3];l3++){ //loop on layer 4 |
deae0246 | 695 | AliITSRecPoint* cl3 = (AliITSRecPoint*)listlayer[3][l3]; |
2755f080 | 696 | for(Int_t l4=0;l4<end[4];l4++){ //loop on layer 5 |
deae0246 | 697 | AliITSRecPoint* cl4 = (AliITSRecPoint*)listlayer[4][l4]; |
2755f080 | 698 | for(Int_t l5=0;l5<end[5];l5++){ //loop on layer 6 |
deae0246 | 699 | AliITSRecPoint* cl5 = (AliITSRecPoint*)listlayer[5][l5]; |
2755f080 | 700 | |
701 | ||
702 | Double_t x1,y1,z1,sx1,sy1,sz1; | |
703 | Double_t x2,y2,z2,sx2,sy2,sz2; | |
704 | AliITSRecPoint* p1=0; | |
705 | AliITSRecPoint* p2=0; | |
706 | Int_t index1=0,index2=0; | |
707 | Int_t mrk1=0,mrk2=0; | |
708 | ||
709 | switch(firstLay) { | |
710 | case 0: | |
711 | p1=cl0; | |
ebda3140 | 712 | index1=clind[0][l0];mrk1=clmark[0][l0]; |
2755f080 | 713 | break; |
714 | case 1: | |
715 | p1=cl1; | |
ebda3140 | 716 | index1=clind[1][l1];mrk1=clmark[1][l1]; |
2755f080 | 717 | break; |
718 | case 2: | |
719 | p1=cl2; | |
ebda3140 | 720 | index1=clind[2][l2];mrk1=clmark[2][l2]; |
2755f080 | 721 | break; |
722 | case 3: | |
723 | p1=cl3; | |
ebda3140 | 724 | index1=clind[3][l3];mrk1=clmark[3][l3]; |
2755f080 | 725 | break; |
726 | case 4: | |
727 | p1=cl4; | |
ebda3140 | 728 | index1=clind[4][l4];mrk1=clmark[4][l4]; |
2755f080 | 729 | break; |
730 | } | |
731 | ||
732 | switch(secondLay) { | |
733 | case 1: | |
734 | p2=cl1; | |
ebda3140 | 735 | index2=clind[1][l1];mrk2=clmark[1][l1]; |
2755f080 | 736 | break; |
737 | case 2: | |
738 | p2=cl2; | |
ebda3140 | 739 | index2=clind[2][l2];mrk2=clmark[2][l2]; |
2755f080 | 740 | break; |
741 | case 3: | |
742 | p2=cl3; | |
ebda3140 | 743 | index2=clind[3][l3];mrk2=clmark[3][l3]; |
2755f080 | 744 | break; |
745 | case 4: | |
746 | p2=cl4; | |
ebda3140 | 747 | index2=clind[4][l4];mrk2=clmark[4][l4]; |
2755f080 | 748 | break; |
749 | case 5: | |
750 | p2=cl5; | |
ebda3140 | 751 | index2=clind[5][l5];mrk2=clmark[5][l5]; |
2755f080 | 752 | break; |
5a03f353 | 753 | default: |
754 | p2=0; | |
755 | index2=-1;mrk2=-1; | |
756 | break; | |
2755f080 | 757 | } |
758 | ||
759 | Int_t module1 = p1->GetDetectorIndex()+firstmod[firstLay]; | |
5a03f353 | 760 | Int_t layer,ladder,detector; |
761 | AliITSgeomTGeo::GetModuleId(module1,layer,ladder,detector); | |
762 | Float_t yclu1 = p1->GetY(); | |
763 | Float_t zclu1 = p1->GetZ(); | |
764 | Double_t cv=0,tgl2=0,phi2=0; | |
2755f080 | 765 | |
766 | Int_t cln1=mrk1; | |
2755f080 | 767 | AliITSclusterTable* arr1 = (AliITSclusterTable*)GetClusterCoord(firstLay,cln1); |
2755f080 | 768 | x1 = arr1->GetX(); |
2755f080 | 769 | y1 = arr1->GetY(); |
2755f080 | 770 | z1 = arr1->GetZ(); |
2755f080 | 771 | sx1 = arr1->GetSx(); |
2755f080 | 772 | sy1 = arr1->GetSy(); |
2755f080 | 773 | sz1 = arr1->GetSz(); |
225a692b | 774 | |
5a03f353 | 775 | if(secondLay>0) { |
776 | Int_t cln2=mrk2; | |
777 | AliITSclusterTable* arr2 = (AliITSclusterTable*)GetClusterCoord(secondLay,cln2); | |
778 | x2 = arr2->GetX(); | |
779 | y2 = arr2->GetY(); | |
780 | z2 = arr2->GetZ(); | |
781 | sx2 = arr2->GetSx(); | |
782 | sy2 = arr2->GetSy(); | |
783 | sz2 = arr2->GetSz(); | |
784 | cv = Curvature(primaryVertex[0],primaryVertex[1],x1,y1,x2,y2); | |
785 | tgl2 = (z2-z1)/TMath::Sqrt((x2-x1)*(x2-x1)+(y2-y1)*(y2-y1)); | |
786 | phi2 = TMath::ATan2((y2-y1),(x2-x1)); | |
787 | } else { // special case of 1-point tracks, only for cosmics (B=0) | |
788 | x2 = primaryVertex[0]; | |
789 | y2 = primaryVertex[1]; | |
790 | z2 = primaryVertex[2]; | |
791 | cv = 0; | |
792 | tgl2 = (z1-z2)/TMath::Sqrt((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2)); | |
793 | phi2 = TMath::ATan2((y1-y2),(x1-x2)); | |
794 | } | |
795 | ||
796 | ||
2755f080 | 797 | AliITStrackSA* trac = new AliITStrackSA(layer,ladder,detector,yclu1,zclu1,phi2,tgl2,cv,1); |
225a692b | 798 | |
799 | ||
2755f080 | 800 | if(cl5!=0) { |
ebda3140 | 801 | trac->AddClusterV2(5,(clind[5][l5] & 0x0fffffff)>>0); |
802 | trac->AddClusterMark(5,clmark[5][l5]); | |
b8ed1a92 | 803 | } |
804 | if(cl4!=0){ | |
ebda3140 | 805 | trac->AddClusterV2(4,(clind[4][l4] & 0x0fffffff)>>0); |
806 | trac->AddClusterMark(4,clmark[4][l4]); | |
b8ed1a92 | 807 | } |
808 | if(cl3!=0){ | |
ebda3140 | 809 | trac->AddClusterV2(3,(clind[3][l3] & 0x0fffffff)>>0); |
810 | trac->AddClusterMark(3,clmark[3][l3]); | |
b8ed1a92 | 811 | } |
812 | if(cl2!=0){ | |
ebda3140 | 813 | trac->AddClusterV2(2,(clind[2][l2] & 0x0fffffff)>>0); |
814 | trac->AddClusterMark(2,clmark[2][l2]); | |
b8ed1a92 | 815 | } |
816 | if(cl1!=0){ | |
ebda3140 | 817 | trac->AddClusterV2(1,(clind[1][l1] & 0x0fffffff)>>0); |
818 | trac->AddClusterMark(1,clmark[1][l1]); | |
b8ed1a92 | 819 | } |
820 | if(cl0!=0){ | |
ebda3140 | 821 | trac->AddClusterV2(0,(clind[0][l0] & 0x0fffffff)>>0); |
822 | trac->AddClusterMark(0,clmark[0][l0]); | |
b8ed1a92 | 823 | } |
824 | ||
b8ed1a92 | 825 | //fit with Kalman filter using AliITStrackerMI::RefitAt() |
826 | AliITStrackMI* ot = new AliITStrackSA(*trac); | |
827 | ||
828 | ot->ResetCovariance(10.); | |
829 | ot->ResetClusters(); | |
830 | ||
e50912db | 831 | if(RefitAt(AliITSRecoParam::GetrInsideITSscreen(),ot,trac)){ //fit from layer 1 to layer 6 |
b8ed1a92 | 832 | AliITStrackMI *otrack2 = new AliITStrackMI(*ot); |
833 | otrack2->ResetCovariance(10.); | |
834 | otrack2->ResetClusters(); | |
835 | //fit from layer 6 to layer 1 | |
e50912db | 836 | if(RefitAt(AliITSRecoParam::GetrInsideSPD1(),otrack2,ot)) { |
b8ed1a92 | 837 | fListOfTracks->AddLast(otrack2); |
deae0246 | 838 | fListOfSATracks->AddLast(trac); |
b8ed1a92 | 839 | } else { |
840 | delete otrack2; | |
deae0246 | 841 | delete trac; |
b8ed1a92 | 842 | } |
843 | ||
844 | } | |
845 | ||
846 | delete ot; | |
b8ed1a92 | 847 | }//end loop layer 6 |
848 | }//end loop layer 5 | |
849 | }//end loop layer 4 | |
850 | }//end loop layer 3 | |
851 | }//end loop layer 2 | |
852 | }//end loop layer 1 | |
853 | ||
b8ed1a92 | 854 | |
225a692b | 855 | |
b8ed1a92 | 856 | |
deae0246 | 857 | if(fListOfTracks->GetEntries()==0) return 0; |
b8ed1a92 | 858 | |
deae0246 | 859 | Int_t lowchi2 = FindTrackLowChiSquare(); |
b8ed1a92 | 860 | AliITStrackV2* otrack =(AliITStrackV2*)fListOfTracks->At(lowchi2); |
deae0246 | 861 | AliITStrackSA* trsa = (AliITStrackSA*)fListOfSATracks->At(lowchi2); |
b8ed1a92 | 862 | |
deae0246 | 863 | if(otrack==0) return 0; |
864 | ||
865 | Int_t indexc[AliITSgeomTGeo::kNLayers]; | |
b8ed1a92 | 866 | for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++) indexc[i]=0; |
867 | for(Int_t nind=0;nind<otrack->GetNumberOfClusters();nind++){ | |
868 | indexc[nind] = otrack->GetClusterIndex(nind); | |
869 | } | |
870 | Int_t labl[6][3]; | |
871 | for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++) { | |
872 | if(i<otrack->GetNumberOfClusters()) { | |
873 | AliITSRecPoint* cl = (AliITSRecPoint*)GetCluster(indexc[i]); | |
874 | labl[i][0]=cl->GetLabel(0); | |
875 | labl[i][1]=cl->GetLabel(1); | |
876 | labl[i][2]=cl->GetLabel(2); | |
877 | } else { | |
878 | labl[i][0]=-1; | |
879 | labl[i][1]=-1; | |
880 | labl[i][2]=-1; | |
881 | } | |
882 | } | |
2755f080 | 883 | |
b8ed1a92 | 884 | CookLabel(otrack,0.); //MI change - to see fake ratio |
885 | ||
886 | Int_t label=FindLabel(labl[0][0],labl[1][0],labl[2][0],labl[3][0],labl[4][0],labl[5][0]); | |
887 | Int_t lflag=0; | |
2755f080 | 888 | for(Int_t i=0;i<otrack->GetNumberOfClusters();i++) |
b8ed1a92 | 889 | if(labl[i][0]==label || labl[i][1]==label || labl[i][2]==label) lflag++; |
890 | ||
2755f080 | 891 | if(lflag<otrack->GetNumberOfClusters()) label = -label; |
b8ed1a92 | 892 | otrack->SetLabel(label); |
893 | ||
894 | //remove clusters of found track | |
895 | for(Int_t nlay=0;nlay<AliITSgeomTGeo::GetNLayers();nlay++){ | |
896 | for(Int_t cln=0;cln<trsa->GetNumberOfMarked(nlay);cln++){ | |
897 | Int_t index = trsa->GetClusterMark(nlay,cln); | |
898 | fCluLayer[nlay]->RemoveAt(index); | |
899 | RemoveClusterCoord(nlay,index); | |
900 | fCluLayer[nlay]->Compress(); | |
7e5bf5af | 901 | } |
902 | } | |
7e5bf5af | 903 | |
13918578 | 904 | return otrack; |
905 | ||
906 | } | |
907 | ||
c421499f | 908 | //_______________________________________________________ |
909 | void AliITStrackerSA::StoreTrack(AliITStrackV2 *t,AliESDEvent *event) const | |
910 | { | |
911 | // | |
912 | // Add new track to the ESD | |
913 | // | |
914 | AliESDtrack outtrack; | |
915 | outtrack.UpdateTrackParams(t,AliESDtrack::kITSin); | |
916 | for(Int_t i=0;i<12;i++) { | |
917 | outtrack.SetITSModuleIndex(i,t->GetModuleIndex(i)); | |
918 | } | |
919 | event->AddTrack(&outtrack); | |
920 | ||
921 | return; | |
922 | } | |
bef31448 | 923 | |
4e05ab9a | 924 | |
bef31448 | 925 | //_______________________________________________________ |
7e5bf5af | 926 | Int_t AliITStrackerSA::SearchClusters(Int_t layer,Double_t phiwindow,Double_t lambdawindow, AliITStrackSA* trs,Double_t /*zvertex*/,Int_t pflag){ |
13918578 | 927 | //function used to to find the clusters associated to the track |
2755f080 | 928 | |
929 | if(AliITSReconstructor::GetRecoParam()->GetLayersToSkip(layer)) return 0; | |
930 | ||
13918578 | 931 | Int_t nc=0; |
932 | AliITSlayer &lay = fgLayers[layer]; | |
7e5bf5af | 933 | Double_t r=lay.GetR(); |
2755f080 | 934 | if(pflag==1){ |
cfe729e0 | 935 | Float_t cx1,cx2,cy1,cy2; |
936 | FindEquation(fPoint1[0],fPoint1[1],fPoint2[0],fPoint2[1],fPoint3[0],fPoint3[1],fCoef1,fCoef2,fCoef3); | |
937 | if (FindIntersection(fCoef1,fCoef2,fCoef3,-r*r,cx1,cy1,cx2,cy2)==0) | |
938 | return 0; | |
1966f03c | 939 | Double_t fi1=TMath::ATan2(cy1-fPoint1[1],cx1-fPoint1[0]); |
940 | Double_t fi2=TMath::ATan2(cy2-fPoint1[1],cx2-fPoint1[0]); | |
cfe729e0 | 941 | fPhiEstimate=ChoosePoint(fi1,fi2,fPhic); |
942 | } | |
13918578 | 943 | |
7e5bf5af | 944 | |
945 | Int_t ncl = fCluLayer[layer]->GetEntries(); | |
946 | for (Int_t index=0; index<ncl; index++) { | |
00a7cc50 | 947 | AliITSRecPoint *c = (AliITSRecPoint*)fCluLayer[layer]->At(index); |
7e5bf5af | 948 | if (!c) continue; |
949 | if (c->GetQ()<=0) continue; | |
3733ccd2 | 950 | if(layer>1 && c->GetQ()<=fMinQ) continue; |
7e5bf5af | 951 | |
952 | AliITSclusterTable* arr = (AliITSclusterTable*)GetClusterCoord(layer,index); | |
953 | Double_t phi = arr->GetPhi(); | |
cfe729e0 | 954 | if (TMath::Abs(phi-fPhiEstimate)>phiwindow) continue; |
494fda7c | 955 | |
7e5bf5af | 956 | Double_t lambda = arr->GetLambda(); |
cfe729e0 | 957 | if (TMath::Abs(lambda-fLambdac)>lambdawindow) continue; |
958 | ||
7e5bf5af | 959 | if(trs->GetNumberOfClustersSA()==trs->GetMaxNumberOfClusters()) return 0; |
960 | if(trs->GetNumberOfMarked(layer)==trs->GetMaxNMarkedPerLayer()) return 0; | |
961 | Int_t orind = arr->GetOrInd(); | |
962 | trs->AddClusterSA(layer,orind); | |
963 | trs->AddClusterMark(layer,index); | |
964 | ||
cfe729e0 | 965 | nc++; |
966 | fLambdac=lambda; | |
967 | fPhiEstimate=phi; | |
cfe729e0 | 968 | |
7e5bf5af | 969 | fPointc[0]=arr->GetX(); |
970 | fPointc[1]=arr->GetY(); | |
971 | ||
cfe729e0 | 972 | } |
973 | return nc; | |
974 | } | |
13918578 | 975 | |
12b1afb7 | 976 | //________________________________________________________________ |
977 | Bool_t AliITStrackerSA::SetFirstPoint(Int_t lay, Int_t clu, Double_t* primaryVertex){ | |
978 | // Sets the first point (seed) for tracking | |
979 | ||
980 | AliITSRecPoint* cl = (AliITSRecPoint*)fCluLayer[lay]->At(clu); | |
981 | if(!cl) return kFALSE; | |
982 | if (cl->GetQ()<=0) return kFALSE; | |
983 | if(lay>1 && cl->GetQ()<=fMinQ) return kFALSE; | |
984 | ||
985 | AliITSclusterTable* arr = (AliITSclusterTable*)GetClusterCoord(lay,clu); | |
986 | fPhic = arr->GetPhi(); | |
987 | fLambdac = arr->GetLambda(); | |
988 | fPhiEstimate = fPhic; | |
989 | fPoint1[0]=primaryVertex[0]; | |
990 | fPoint1[1]=primaryVertex[1]; | |
991 | fPoint2[0]=arr->GetX(); | |
992 | fPoint2[1]=arr->GetY(); | |
993 | return kTRUE; | |
994 | } | |
995 | ||
bef31448 | 996 | //________________________________________________________________ |
997 | void AliITStrackerSA::UpdatePoints(){ | |
998 | //update of points for the estimation of the curvature | |
13918578 | 999 | |
bef31448 | 1000 | fPoint2[0]=fPoint3[0]; |
1001 | fPoint2[1]=fPoint3[1]; | |
1002 | fPoint3[0]=fPointc[0]; | |
1003 | fPoint3[1]=fPointc[1]; | |
13918578 | 1004 | |
1005 | ||
13918578 | 1006 | } |
13918578 | 1007 | |
13918578 | 1008 | //___________________________________________________________________ |
1009 | Int_t AliITStrackerSA::FindEquation(Float_t x1, Float_t y1, Float_t x2, Float_t y2, Float_t x3, Float_t y3,Float_t& a, Float_t& b, Float_t& c){ | |
1010 | ||
1011 | //given (x,y) of three recpoints (in global coordinates) | |
1012 | //returns the parameters a,b,c of circonference x*x + y*y +a*x + b*y +c | |
1013 | ||
1014 | Float_t den = (x3-x1)*(y2-y1)-(x2-x1)*(y3-y1); | |
1015 | if(den==0) return 0; | |
1016 | a = ((y3-y1)*(x2*x2+y2*y2-x1*x1-y1*y1)-(y2-y1)*(x3*x3+y3*y3-x1*x1-y1*y1))/den; | |
1017 | b = -(x2*x2-x1*x1+y2*y2-y1*y1+a*(x2-x1))/(y2-y1); | |
1018 | c = -x1*x1-y1*y1-a*x1-b*y1; | |
1019 | return 1; | |
1020 | } | |
1021 | //__________________________________________________________________________ | |
1022 | Int_t AliITStrackerSA::FindIntersection(Float_t a1, Float_t b1, Float_t c1, Float_t c2,Float_t& x1,Float_t& y1, Float_t& x2, Float_t& y2){ | |
1023 | ||
1024 | //Finds the intersection between the circonference of the track and the circonference centered in (0,0) represented by one layer | |
1025 | //c2 is -rlayer*rlayer | |
1026 | ||
1027 | if(a1==0) return 0; | |
3a2f227d | 1028 | Double_t m = c2-c1; |
1029 | Double_t aA = (b1*b1)/(a1*a1)+1; | |
1030 | Double_t bB = (-2*m*b1/(a1*a1)); | |
1031 | Double_t cC = c2+(m*m)/(a1*a1); | |
1032 | Double_t dD = bB*bB-4*aA*cC; | |
1033 | if(dD<0) return 0; | |
13918578 | 1034 | |
3a2f227d | 1035 | y1 = (-bB+TMath::Sqrt(dD))/(2*aA); |
1036 | y2 = (-bB-TMath::Sqrt(dD))/(2*aA); | |
13918578 | 1037 | x1 = (c2-c1-b1*y1)/a1; |
1038 | x2 = (c2-c1-b1*y2)/a1; | |
1039 | ||
1040 | return 1; | |
1041 | } | |
1042 | //____________________________________________________________________ | |
1043 | Double_t AliITStrackerSA::Curvature(Double_t x1,Double_t y1,Double_t | |
1044 | x2,Double_t y2,Double_t x3,Double_t y3){ | |
1045 | ||
1046 | //calculates the curvature of track | |
1047 | Double_t den = (x3-x1)*(y2-y1)-(x2-x1)*(y3-y1); | |
1048 | if(den==0) return 0; | |
1049 | Double_t a = ((y3-y1)*(x2*x2+y2*y2-x1*x1-y1*y1)-(y2-y1)*(x3*x3+y3*y3-x1*x1-y1*y1))/den; | |
1050 | Double_t b = -(x2*x2-x1*x1+y2*y2-y1*y1+a*(x2-x1))/(y2-y1); | |
1051 | Double_t c = -x1*x1-y1*y1-a*x1-b*y1; | |
1052 | Double_t xc=-a/2.; | |
1053 | ||
1054 | if((a*a+b*b-4*c)<0) return 0; | |
1055 | Double_t rad = TMath::Sqrt(a*a+b*b-4*c)/2.; | |
1056 | if(rad==0) return 0; | |
1057 | ||
1058 | if((x1>0 && y1>0 && x1<xc)) rad*=-1; | |
1059 | if((x1<0 && y1>0 && x1<xc)) rad*=-1; | |
1060 | // if((x1<0 && y1<0 && x1<xc)) rad*=-1; | |
1061 | // if((x1>0 && y1<0 && x1<xc)) rad*=-1; | |
1062 | ||
1063 | return 1/rad; | |
1064 | ||
1065 | } | |
7e5bf5af | 1066 | |
1067 | ||
13918578 | 1068 | //____________________________________________________________________ |
1069 | Double_t AliITStrackerSA::ChoosePoint(Double_t p1, Double_t p2, Double_t pp){ | |
1070 | ||
1071 | //Returns the point closest to pp | |
1072 | ||
1073 | Double_t diff1 = p1-pp; | |
1074 | Double_t diff2 = p2-pp; | |
1075 | ||
1076 | if(TMath::Abs(diff1)<TMath::Abs(diff2)) fPhiEstimate=p1; | |
1077 | else fPhiEstimate=p2; | |
1078 | return fPhiEstimate; | |
1079 | ||
1080 | } | |
1081 | ||
1082 | ||
1083 | //_________________________________________________________________ | |
deae0246 | 1084 | Int_t AliITStrackerSA::FindTrackLowChiSquare() const { |
1085 | // returns track with lowest chi square | |
1086 | Int_t dim=fListOfTracks->GetEntries(); | |
1087 | if(dim<=1) return 0; | |
1088 | AliITStrackV2* trk = (AliITStrackV2*)fListOfTracks->At(0); | |
1089 | Double_t minChi2=trk->GetChi2(); | |
1090 | Int_t index=0; | |
1091 | for(Int_t i=1;i<dim;i++){ | |
4adcf390 | 1092 | trk = (AliITStrackV2*)fListOfTracks->At(i); |
deae0246 | 1093 | Double_t chi2=trk->GetChi2(); |
1094 | if(chi2<minChi2){ | |
1095 | minChi2=chi2; | |
1096 | index=i; | |
13918578 | 1097 | } |
13918578 | 1098 | } |
deae0246 | 1099 | return index; |
13918578 | 1100 | } |
1101 | ||
1102 | //__________________________________________________________ | |
2755f080 | 1103 | Int_t AliITStrackerSA::FindLabel(Int_t l0, Int_t l1, Int_t l2, Int_t l3, Int_t l4, Int_t l5){ |
13918578 | 1104 | |
1105 | //function used to determine the track label | |
1106 | ||
2755f080 | 1107 | Int_t lb[6] = {l0,l1,l2,l3,l4,l5}; |
13918578 | 1108 | Int_t aa[6]={1,1,1,1,1,1}; |
1109 | Int_t ff=0; | |
1110 | Int_t ll=0; | |
1111 | Int_t k=0;Int_t w=0;Int_t num=6; | |
8b3779ef | 1112 | for(Int_t i=5;i>=0;i--) if(lb[i]==-1) num=i; |
13918578 | 1113 | |
1114 | while(k<num){ | |
1115 | ||
1116 | for(Int_t i=k+1;i<num;i++){ | |
1117 | ||
1118 | if(lb[k]==lb[i] && aa[k]!=0){ | |
1119 | ||
1120 | aa[k]+=1; | |
1121 | aa[i]=0; | |
1122 | } | |
1123 | } | |
8b3779ef | 1124 | k++; |
13918578 | 1125 | } |
1126 | ||
1127 | while(w<num){ | |
8b3779ef | 1128 | |
13918578 | 1129 | for(Int_t j=0;j<6;j++){ |
1130 | if(aa[w]<aa[j]){ | |
1131 | ff=aa[w]; | |
1132 | aa[w]=aa[j]; | |
1133 | aa[j]=ff; | |
1134 | ll=lb[w]; | |
1135 | lb[w]=lb[j]; | |
1136 | lb[j]=ll; | |
1137 | } | |
1138 | } | |
8b3779ef | 1139 | w++; |
13918578 | 1140 | } |
8b3779ef | 1141 | |
1142 | if(num<1) return -1; | |
1143 | return lb[num-1]; | |
13918578 | 1144 | } |
1145 | ||
1146 | //_____________________________________________________________________________ | |
1147 | Int_t AliITStrackerSA::Label(Int_t gl1, Int_t gl2, Int_t gl3, Int_t gl4, Int_t gl5, Int_t gl6,Int_t gl7, Int_t gl8, Int_t gl9, Int_t gl10,Int_t gl11, | |
2755f080 | 1148 | Int_t gl12, Int_t gl13, Int_t gl14,Int_t gl15, Int_t gl16, Int_t gl17, Int_t gl18, Int_t minNPoints){ |
13918578 | 1149 | |
1150 | ||
1151 | //function used to assign label to the found track. If track is fake, the label is negative | |
1152 | ||
1153 | Int_t lb0[6] = {gl1,gl2,gl3,gl4,gl5,gl6}; | |
1154 | Int_t lb1[6] = {gl7,gl8,gl9,gl10,gl11,gl12}; | |
1155 | Int_t lb2[6] = {gl13,gl14,gl15,gl16,gl17,gl18}; | |
1156 | Int_t ll=FindLabel(lb0[0],lb0[1],lb0[2],lb0[3],lb0[4],lb0[5]); | |
1157 | Int_t lflag=0;Int_t num=6; | |
1158 | if(lb0[5]==-1 && lb1[5]==-1 && lb2[5]==-1) num=5; | |
1159 | ||
1160 | for(Int_t i=0;i<num;i++){ | |
1161 | if(lb0[i]==ll || lb1[i]==ll || lb2[i]==ll) lflag+=1; | |
1162 | } | |
1163 | ||
2755f080 | 1164 | if(lflag>=minNPoints) return ll; |
13918578 | 1165 | else return -ll; |
1166 | ||
1167 | ||
1168 | } | |
13918578 | 1169 | //_____________________________________________________________________________ |
5b4dedce | 1170 | void AliITStrackerSA::SetCalculatedWindowSizes(Int_t n, Float_t phimin, Float_t phimax, Float_t lambdamin, Float_t lambdamax){ |
1171 | // Set sizes of the phi and lambda windows used for track finding | |
1172 | fNloop = n; | |
1173 | if(fPhiWin) delete [] fPhiWin; | |
1174 | if(fLambdaWin) delete [] fLambdaWin; | |
1175 | fPhiWin = new Double_t[fNloop]; | |
1176 | fLambdaWin = new Double_t[fNloop]; | |
1177 | Float_t stepPhi=(phimax-phimin)/(Float_t)(fNloop-1); | |
1178 | Float_t stepLambda=(lambdamax-lambdamin)/(Float_t)(fNloop-1); | |
1179 | for(Int_t k=0;k<fNloop;k++){ | |
1180 | Float_t phi=phimin+k*stepPhi; | |
1181 | Float_t lam=lambdamin+k*stepLambda; | |
1182 | fPhiWin[k]=phi; | |
1183 | fLambdaWin[k]=lam; | |
1184 | } | |
1185 | } | |
1186 | //_____________________________________________________________________________ | |
1187 | void AliITStrackerSA::SetFixedWindowSizes(Int_t n, Double_t *phi, Double_t *lam){ | |
13918578 | 1188 | // Set sizes of the phi and lambda windows used for track finding |
1189 | fNloop = n; | |
1190 | if(phi){ // user defined values | |
1191 | fPhiWin = new Double_t[fNloop]; | |
1192 | fLambdaWin = new Double_t[fNloop]; | |
1193 | for(Int_t k=0;k<fNloop;k++){ | |
1194 | fPhiWin[k]=phi[k]; | |
1195 | fLambdaWin[k]=lam[k]; | |
1196 | } | |
1197 | } | |
1198 | else { // default values | |
627b6db6 | 1199 | |
1200 | Double_t phid[33] = {0.002,0.003,0.004,0.0045,0.0047, | |
bef31448 | 1201 | 0.005,0.0053,0.0055, |
1202 | 0.006,0.0063,0.0065,0.007,0.0073,0.0075,0.0077, | |
1203 | 0.008,0.0083,0.0085,0.0087,0.009,0.0095,0.0097, | |
627b6db6 | 1204 | 0.01,0.0105,0.011,0.0115,0.012,0.0125,0.013,0.0135,0.0140,0.0145}; |
1205 | Double_t lambdad[33] = {0.003,0.004,0.005,0.005,0.005, | |
1206 | 0.005,0.005,0.006, | |
1207 | 0.006,0.006,0.006,0.007,0.007,0.007,0.007, | |
1208 | 0.007,0.007,0.007,0.007,0.007,0.007,0.007, | |
1209 | 0.008,0.008,0.008,0.008,0.008,0.008,0.008,0.008,0.008,0.008}; | |
bef31448 | 1210 | |
627b6db6 | 1211 | if(fNloop!=33){ |
1212 | fNloop = 33; | |
13918578 | 1213 | } |
627b6db6 | 1214 | |
1215 | ||
13918578 | 1216 | fPhiWin = new Double_t[fNloop]; |
1217 | fLambdaWin = new Double_t[fNloop]; | |
e340bb86 | 1218 | |
e340bb86 | 1219 | Double_t factor=AliITSReconstructor::GetRecoParam()->GetFactorSAWindowSizes(); // possibility to enlarge windows for cosmics reco with large misalignments (A.Dainese) |
2755f080 | 1220 | |
1221 | for(Int_t k=0;k<fNloop;k++){ | |
e340bb86 | 1222 | fPhiWin[k]=phid[k]*factor; |
1223 | fLambdaWin[k]=lambdad[k]*factor; | |
13918578 | 1224 | } |
1225 | ||
1226 | } | |
1227 | ||
1228 | } | |
7e5bf5af | 1229 | //_______________________________________________________________________ |
cc088660 | 1230 | void AliITStrackerSA::GetCoorAngles(AliITSRecPoint* cl,Double_t &phi,Double_t &lambda, Float_t &x, Float_t &y,Float_t &z,Double_t* vertex){ |
7e5bf5af | 1231 | //Returns values of phi (azimuthal) and lambda angles for a given cluster |
cc088660 | 1232 | /* |
7e5bf5af | 1233 | Double_t rot[9]; fGeom->GetRotMatrix(module,rot); |
1234 | Int_t lay,lad,det; fGeom->GetModuleId(module,lay,lad,det); | |
1235 | Float_t tx,ty,tz; fGeom->GetTrans(lay,lad,det,tx,ty,tz); | |
1236 | ||
1237 | Double_t alpha=TMath::ATan2(rot[1],rot[0])+TMath::Pi(); | |
1238 | Double_t phi1=TMath::Pi()/2+alpha; | |
1239 | if (lay==1) phi1+=TMath::Pi(); | |
1240 | ||
1241 | Float_t cp=TMath::Cos(phi1), sp=TMath::Sin(phi1); | |
1242 | Float_t r=tx*cp+ty*sp; | |
1243 | ||
cc088660 | 1244 | xyz= r*cp - cl->GetY()*sp; |
7e5bf5af | 1245 | y= r*sp + cl->GetY()*cp; |
1246 | z=cl->GetZ(); | |
cc088660 | 1247 | */ |
1248 | Float_t xyz[3]; | |
1249 | cl->GetGlobalXYZ(xyz); | |
1250 | x=xyz[0]; | |
1251 | y=xyz[1]; | |
1252 | z=xyz[2]; | |
1253 | ||
1966f03c | 1254 | phi=TMath::ATan2(y-vertex[1],x-vertex[0]); |
7e5bf5af | 1255 | lambda=TMath::ATan2(z-vertex[2],TMath::Sqrt((x-vertex[0])*(x-vertex[0])+(y-vertex[1])*(y-vertex[1]))); |
1256 | } | |
13918578 | 1257 | |
7e5bf5af | 1258 | //________________________________________________________________________ |
cc088660 | 1259 | void AliITStrackerSA::GetCoorErrors(AliITSRecPoint* cl,Float_t &sx,Float_t &sy, Float_t &sz){ |
7e5bf5af | 1260 | |
cc088660 | 1261 | //returns sigmax, y, z of cluster in global coordinates |
1262 | /* | |
7e5bf5af | 1263 | Double_t rot[9]; fGeom->GetRotMatrix(module,rot); |
cc088660 | 1264 | Int_t lay,lad,det; |
1265 | AliITSgeomTGeo::GetModuleId(module,lay,lad,det); | |
7e5bf5af | 1266 | |
1267 | Double_t alpha=TMath::ATan2(rot[1],rot[0])+TMath::Pi(); | |
1268 | Double_t phi=TMath::Pi()/2+alpha; | |
1269 | if (lay==1) phi+=TMath::Pi(); | |
1270 | ||
1271 | Float_t cp=TMath::Cos(phi), sp=TMath::Sin(phi); | |
cc088660 | 1272 | */ |
1273 | Float_t covm[6]; | |
1274 | cl->GetGlobalCov(covm); | |
1275 | sx=TMath::Sqrt(covm[0]); | |
1276 | sy=TMath::Sqrt(covm[3]); | |
1277 | sz=TMath::Sqrt(covm[5]); | |
1278 | /* | |
7e5bf5af | 1279 | sx = TMath::Sqrt(sp*sp*cl->GetSigmaY2()); |
1280 | sy = TMath::Sqrt(cp*cp*cl->GetSigmaY2()); | |
1281 | sz = TMath::Sqrt(cl->GetSigmaZ2()); | |
cc088660 | 1282 | */ |
7e5bf5af | 1283 | } |