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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), |
63 | fSixPoints(0), | |
b8ed1a92 | 64 | fOuterStartLayer(0), |
e399f961 | 65 | fCluLayer(0), |
66 | fCluCoord(0){ | |
13918578 | 67 | // Default constructor |
68 | Init(); | |
627b6db6 | 69 | |
13918578 | 70 | } |
2257f27e | 71 | //____________________________________________________________________________ |
cc088660 | 72 | AliITStrackerSA::AliITStrackerSA(const Char_t *geom):AliITStrackerMI(0), |
e399f961 | 73 | fPhiEstimate(0), |
1966f03c | 74 | fITSStandAlone(0), |
e399f961 | 75 | fLambdac(0), |
76 | fPhic(0), | |
77 | fCoef1(0), | |
78 | fCoef2(0), | |
79 | fCoef3(0), | |
80 | fNloop(0), | |
81 | fPhiWin(0), | |
82 | fLambdaWin(0), | |
83 | fVert(0), | |
84 | fVertexer(0), | |
e399f961 | 85 | fListOfTracks(0), |
deae0246 | 86 | fListOfSATracks(0), |
e399f961 | 87 | fITSclusters(0), |
88 | fSixPoints(0), | |
b8ed1a92 | 89 | fOuterStartLayer(0), |
e399f961 | 90 | fCluLayer(0), |
91 | fCluCoord(0) | |
2257f27e | 92 | { |
93 | // Standard constructor (Vertex is known and passed to this obj.) | |
cc088660 | 94 | if (geom) { |
95 | AliWarning("\"geom\" is actually a dummy argument !"); | |
96 | } | |
97 | ||
2257f27e | 98 | Init(); |
99 | fVert = 0; | |
627b6db6 | 100 | |
2257f27e | 101 | } |
102 | ||
13918578 | 103 | //____________________________________________________________________________ |
cc088660 | 104 | AliITStrackerSA::AliITStrackerSA(const Char_t *geom, AliESDVertex *vert):AliITStrackerMI(0), |
e399f961 | 105 | fPhiEstimate(0), |
1966f03c | 106 | fITSStandAlone(0), |
e399f961 | 107 | fLambdac(0), |
108 | fPhic(0), | |
109 | fCoef1(0), | |
110 | fCoef2(0), | |
111 | fCoef3(0), | |
112 | fNloop(0), | |
113 | fPhiWin(0), | |
114 | fLambdaWin(0), | |
115 | fVert(vert), | |
116 | fVertexer(0), | |
e399f961 | 117 | fListOfTracks(0), |
deae0246 | 118 | fListOfSATracks(0), |
e399f961 | 119 | fITSclusters(0), |
120 | fSixPoints(0), | |
b8ed1a92 | 121 | fOuterStartLayer(0), |
e399f961 | 122 | fCluLayer(0), |
1966f03c | 123 | fCluCoord(0) |
13918578 | 124 | { |
125 | // Standard constructor (Vertex is known and passed to this obj.) | |
cc088660 | 126 | if (geom) { |
127 | AliWarning("\"geom\" is actually a dummy argument !"); | |
128 | } | |
13918578 | 129 | Init(); |
627b6db6 | 130 | |
13918578 | 131 | } |
132 | ||
13918578 | 133 | //____________________________________________________________________________ |
cc088660 | 134 | AliITStrackerSA::AliITStrackerSA(const Char_t *geom, AliITSVertexer *vertexer):AliITStrackerMI(0), |
e399f961 | 135 | fPhiEstimate(0), |
1966f03c | 136 | fITSStandAlone(0), |
e399f961 | 137 | fLambdac(0), |
138 | fPhic(0), | |
139 | fCoef1(0), | |
140 | fCoef2(0), | |
141 | fCoef3(0), | |
142 | fNloop(0), | |
143 | fPhiWin(0), | |
144 | fLambdaWin(0), | |
145 | fVert(), | |
146 | fVertexer(vertexer), | |
e399f961 | 147 | fListOfTracks(0), |
deae0246 | 148 | fListOfSATracks(0), |
e399f961 | 149 | fITSclusters(0), |
150 | fSixPoints(0), | |
b8ed1a92 | 151 | fOuterStartLayer(0), |
e399f961 | 152 | fCluLayer(0), |
1966f03c | 153 | fCluCoord(0) |
13918578 | 154 | { |
155 | // Standard constructor (Vertex is unknown - vertexer is passed to this obj) | |
cc088660 | 156 | if (geom) { |
157 | AliWarning("\"geom\" is actually a dummy argument !"); | |
158 | } | |
13918578 | 159 | Init(); |
160 | fVertexer = vertexer; | |
627b6db6 | 161 | |
13918578 | 162 | } |
163 | ||
164 | //____________________________________________________________________________ | |
e399f961 | 165 | AliITStrackerSA::AliITStrackerSA(const AliITStrackerSA& tracker):AliITStrackerMI(), |
166 | fPhiEstimate(tracker.fPhiEstimate), | |
1966f03c | 167 | fITSStandAlone(tracker.fITSStandAlone), |
e399f961 | 168 | fLambdac(tracker.fLambdac), |
169 | fPhic(tracker.fPhic), | |
170 | fCoef1(tracker.fCoef1), | |
171 | fCoef2(tracker.fCoef2), | |
172 | fCoef3(tracker.fCoef3), | |
173 | fNloop(tracker.fNloop), | |
174 | fPhiWin(tracker.fPhiWin), | |
175 | fLambdaWin(tracker.fLambdaWin), | |
176 | fVert(tracker.fVert), | |
177 | fVertexer(tracker.fVertexer), | |
e399f961 | 178 | fListOfTracks(tracker.fListOfTracks), |
deae0246 | 179 | fListOfSATracks(tracker.fListOfSATracks), |
e399f961 | 180 | fITSclusters(tracker.fITSclusters), |
181 | fSixPoints(tracker.fSixPoints), | |
b8ed1a92 | 182 | fOuterStartLayer(tracker.fOuterStartLayer), |
e399f961 | 183 | fCluLayer(tracker.fCluLayer), |
184 | fCluCoord(tracker.fCluCoord) { | |
13918578 | 185 | // Copy constructor |
13918578 | 186 | for(Int_t i=0;i<2;i++){ |
187 | fPoint1[i]=tracker.fPoint1[i]; | |
188 | fPoint2[i]=tracker.fPoint2[i]; | |
189 | fPoint3[i]=tracker.fPoint3[i]; | |
190 | fPointc[i]=tracker.fPointc[i]; | |
191 | } | |
13918578 | 192 | if(tracker.fVertexer && tracker.fVert){ |
d681bb2d | 193 | fVert = new AliESDVertex(*tracker.fVert); |
13918578 | 194 | } |
195 | else { | |
196 | fVert = tracker.fVert; | |
197 | } | |
cc088660 | 198 | for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){ |
7e5bf5af | 199 | fCluLayer[i] = tracker.fCluLayer[i]; |
200 | fCluCoord[i] = tracker.fCluCoord[i]; | |
201 | } | |
13918578 | 202 | } |
7d62fb64 | 203 | //______________________________________________________________________ |
e399f961 | 204 | AliITStrackerSA& AliITStrackerSA::operator=(const AliITStrackerSA& source){ |
205 | // Assignment operator. | |
206 | this->~AliITStrackerSA(); | |
207 | new(this) AliITStrackerSA(source); | |
208 | return *this; | |
209 | ||
7d62fb64 | 210 | } |
13918578 | 211 | |
212 | //____________________________________________________________________________ | |
213 | AliITStrackerSA::~AliITStrackerSA(){ | |
214 | // destructor | |
d681bb2d | 215 | // if fVertexer is not null, the AliESDVertex obj. is owned by this class |
13918578 | 216 | // and is deleted here |
217 | if(fVertexer){ | |
218 | if(fVert)delete fVert; | |
219 | } | |
220 | fVert = 0; | |
221 | fVertexer = 0; | |
7e5bf5af | 222 | |
13918578 | 223 | if(fPhiWin)delete []fPhiWin; |
224 | if(fLambdaWin)delete []fLambdaWin; | |
4e05ab9a | 225 | fListOfTracks->Delete(); |
adda6c2b | 226 | delete fListOfTracks; |
deae0246 | 227 | fListOfSATracks->Delete(); |
228 | delete fListOfSATracks; | |
7e5bf5af | 229 | if(fCluLayer){ |
cc088660 | 230 | for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){ |
7e5bf5af | 231 | if(fCluLayer[i]){ |
232 | fCluLayer[i]->Delete(); | |
233 | delete fCluLayer[i]; | |
234 | } | |
235 | } | |
236 | delete [] fCluLayer; | |
237 | } | |
238 | if(fCluCoord){ | |
cc088660 | 239 | for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){ |
7e5bf5af | 240 | if(fCluCoord[i]){ |
241 | fCluCoord[i]->Delete(); | |
242 | delete fCluCoord[i]; | |
243 | } | |
244 | } | |
245 | delete [] fCluCoord; | |
627b6db6 | 246 | } |
7e5bf5af | 247 | |
7e5bf5af | 248 | } |
13918578 | 249 | |
1966f03c | 250 | //____________________________________________________________________________ |
af885e0f | 251 | Int_t AliITStrackerSA::Clusters2Tracks(AliESDEvent *event){ |
1966f03c | 252 | // This method is used to find and fit the tracks. By default the corresponding |
253 | // method in the parent class is invoked. In this way a combined tracking | |
254 | // TPC+ITS is performed. If the flag fITSStandAlone is true, the tracking | |
255 | // is done in the ITS only. In the standard reconstruction chain this option | |
256 | // can be set via AliReconstruction::SetOption("ITS","onlyITS") | |
257 | Int_t rc=0; | |
258 | if(!fITSStandAlone){ | |
259 | rc=AliITStrackerMI::Clusters2Tracks(event); | |
260 | } | |
261 | else { | |
262 | AliDebug(1,"Stand Alone flag set: doing tracking in ITS alone\n"); | |
263 | } | |
264 | if(!rc) rc=FindTracks(event); | |
265 | return rc; | |
266 | } | |
267 | ||
13918578 | 268 | //____________________________________________________________________________ |
269 | void AliITStrackerSA::Init(){ | |
270 | // Reset all data members | |
271 | fPhiEstimate=0; | |
272 | for(Int_t i=0;i<3;i++){fPoint1[i]=0;fPoint2[i]=0;fPoint3[i]=0;} | |
273 | fLambdac=0; | |
274 | fPhic=0; | |
275 | fCoef1=0; | |
276 | fCoef2=0; | |
277 | fCoef3=0; | |
278 | fPointc[0]=0; | |
279 | fPointc[1]=0; | |
280 | fVert = 0; | |
281 | fVertexer = 0; | |
5b4dedce | 282 | Int_t nLoops=AliITSReconstructor::GetRecoParam()->GetNLoopsSA(); |
283 | if(nLoops==33){ | |
284 | SetFixedWindowSizes(); | |
285 | }else{ | |
286 | Double_t phimin=AliITSReconstructor::GetRecoParam()->GetMinPhiSA(); | |
287 | Double_t phimax=AliITSReconstructor::GetRecoParam()->GetMaxPhiSA(); | |
288 | Double_t lambmin=AliITSReconstructor::GetRecoParam()->GetMinLambdaSA(); | |
289 | Double_t lambmax=AliITSReconstructor::GetRecoParam()->GetMaxLambdaSA(); | |
290 | SetCalculatedWindowSizes(nLoops,phimin,phimax,lambmin,lambmax); | |
291 | } | |
2257f27e | 292 | fITSclusters = 0; |
293 | SetSixPoints(); | |
b8ed1a92 | 294 | SetOuterStartLayer(0); |
1966f03c | 295 | SetSAFlag(kFALSE); |
4e05ab9a | 296 | fListOfTracks=new TObjArray(0,0); |
deae0246 | 297 | fListOfSATracks=new TObjArray(0,0); |
7e5bf5af | 298 | fCluLayer = 0; |
299 | fCluCoord = 0; | |
627b6db6 | 300 | } |
13918578 | 301 | //_______________________________________________________________________ |
302 | void AliITStrackerSA::ResetForFinding(){ | |
303 | // Reset data members used in all loops during track finding | |
304 | fPhiEstimate=0; | |
305 | for(Int_t i=0;i<3;i++){fPoint1[i]=0;fPoint2[i]=0;fPoint3[i]=0;} | |
306 | fLambdac=0; | |
307 | fPhic=0; | |
308 | fCoef1=0; | |
309 | fCoef2=0; | |
310 | fCoef3=0; | |
311 | fPointc[0]=0; | |
312 | fPointc[1]=0; | |
4e05ab9a | 313 | fListOfTracks->Delete(); |
deae0246 | 314 | fListOfSATracks->Delete(); |
13918578 | 315 | } |
bef31448 | 316 | |
7e5bf5af | 317 | |
2257f27e | 318 | |
bef31448 | 319 | //______________________________________________________________________ |
af885e0f | 320 | Int_t AliITStrackerSA::FindTracks(AliESDEvent* event){ |
bef31448 | 321 | |
7e5bf5af | 322 | // Track finder using the ESD object |
deae0246 | 323 | |
2257f27e | 324 | if(!fITSclusters){ |
325 | Fatal("FindTracks","ITS cluster tree is not accessed - Abort!!!\n Please use method SetClusterTree to pass the pointer to the tree\n"); | |
326 | return -1; | |
bef31448 | 327 | } |
7e5bf5af | 328 | //Reads event and mark clusters of traks already found, with flag kITSin |
ebda3140 | 329 | Int_t nentr=event->GetNumberOfTracks(); |
5a03f353 | 330 | if(AliITSReconstructor::GetRecoParam()->GetSAUseAllClusters()==kFALSE) { |
331 | while (nentr--) { | |
332 | AliESDtrack *track=event->GetTrack(nentr); | |
333 | if (track->GetStatus()&AliESDtrack::kITSin==AliESDtrack::kITSin){ | |
334 | Int_t idx[12]; | |
335 | Int_t ncl = track->GetITSclusters(idx); | |
336 | for(Int_t k=0;k<ncl;k++){ | |
337 | AliITSRecPoint* cll = (AliITSRecPoint*)GetCluster(idx[k]); | |
338 | cll->SetBit(kSAflag); | |
339 | } | |
ebda3140 | 340 | } |
341 | } | |
342 | } | |
343 | //Get primary vertex | |
344 | Double_t primaryVertex[3]; | |
345 | event->GetVertex()->GetXYZ(primaryVertex); | |
346 | //Creates TClonesArray with clusters for each layer. The clusters already used | |
347 | //by AliITStrackerMI are not considered | |
deae0246 | 348 | Int_t nclusters[AliITSgeomTGeo::kNLayers]={0,0,0,0,0,0}; |
349 | Int_t dmar[AliITSgeomTGeo::kNLayers]={0,0,0,0,0,0}; | |
ebda3140 | 350 | if (fCluLayer == 0) { |
deae0246 | 351 | fCluLayer = new TClonesArray*[AliITSgeomTGeo::kNLayers]; |
352 | fCluCoord = new TClonesArray*[AliITSgeomTGeo::kNLayers]; | |
ebda3140 | 353 | for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++) { |
354 | fCluLayer[i]=0; | |
355 | fCluCoord[i]=0; | |
356 | } | |
357 | } | |
ebda3140 | 358 | for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){ |
ebda3140 | 359 | AliITSlayer &layer=fgLayers[i]; |
25be2b21 | 360 | if (!AliITSReconstructor::GetRecoParam()->GetLayersToSkip(i)) { |
361 | for(Int_t cli=0;cli<layer.GetNumberOfClusters();cli++){ | |
362 | AliITSRecPoint* cls = (AliITSRecPoint*)layer.GetCluster(cli); | |
363 | if(cls->TestBit(kSAflag)==kTRUE) continue; //clusters used by TPC prol. | |
364 | if(cls->GetQ()==0) continue; //fake clusters dead zones | |
365 | nclusters[i]++; | |
366 | } | |
ebda3140 | 367 | } |
368 | dmar[i]=0; | |
369 | delete fCluLayer[i]; | |
370 | fCluLayer[i] = new TClonesArray("AliITSRecPoint",nclusters[i]); | |
371 | delete fCluCoord[i]; | |
372 | fCluCoord[i] = new TClonesArray("AliITSclusterTable",nclusters[i]); | |
373 | } | |
374 | ||
375 | for(Int_t ilay=0;ilay<AliITSgeomTGeo::GetNLayers();ilay++){ | |
376 | TClonesArray &clulay = *fCluLayer[ilay]; | |
377 | TClonesArray &clucoo = *fCluCoord[ilay]; | |
378 | AliITSlayer &layer=fgLayers[ilay]; | |
25be2b21 | 379 | if (!AliITSReconstructor::GetRecoParam()->GetLayersToSkip(ilay)) { |
380 | for(Int_t cli=0;cli<layer.GetNumberOfClusters();cli++){ | |
381 | AliITSRecPoint* cls = (AliITSRecPoint*)layer.GetCluster(cli); | |
382 | if(cls->TestBit(kSAflag)==kTRUE) continue; | |
383 | if(cls->GetQ()==0) continue; | |
384 | Double_t phi=0;Double_t lambda=0; | |
385 | Float_t x=0;Float_t y=0;Float_t z=0; | |
386 | Float_t sx=0;Float_t sy=0;Float_t sz=0; | |
387 | GetCoorAngles(cls,phi,lambda,x,y,z,primaryVertex); | |
388 | GetCoorErrors(cls,sx,sy,sz); | |
389 | new (clulay[dmar[ilay]]) AliITSRecPoint(*cls); | |
390 | new (clucoo[dmar[ilay]]) AliITSclusterTable(x,y,z,sx,sy,sz,phi,lambda,cli); | |
391 | dmar[ilay]++; | |
392 | } | |
ebda3140 | 393 | } |
394 | } | |
7e5bf5af | 395 | |
ebda3140 | 396 | Int_t minNPoints = (fSixPoints ? AliITSgeomTGeo::GetNLayers() : AliITSgeomTGeo::GetNLayers()-1); |
397 | for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++) { | |
398 | if(AliITSReconstructor::GetRecoParam()->GetLayersToSkip(i)) { | |
399 | minNPoints--; | |
400 | } | |
401 | } | |
7e5bf5af | 402 | |
403 | ||
ebda3140 | 404 | Int_t ntrack=0; |
405 | //loop on the different windows | |
deae0246 | 406 | static Int_t nClusLay[AliITSgeomTGeo::kNLayers];//counter for clusters on each layer |
ebda3140 | 407 | for(Int_t nloop=0;nloop<fNloop;nloop++){ |
408 | for(Int_t ncl=0;ncl<fCluLayer[0]->GetEntries();ncl++){ //loop starting from layer 0 | |
409 | ||
410 | ResetForFinding(); | |
411 | Int_t pflag=0; | |
412 | ||
413 | AliITSRecPoint* cl = (AliITSRecPoint*)fCluLayer[0]->At(ncl); | |
414 | ||
415 | if(!cl) continue; | |
416 | if (cl->GetQ()<=0) continue; | |
417 | ||
418 | AliITSclusterTable* arr = (AliITSclusterTable*)GetClusterCoord(0,ncl); | |
419 | fPhic = arr->GetPhi(); | |
420 | fLambdac = arr->GetLambda(); | |
421 | if (TMath::Abs(fLambdac)>0.26*TMath::Pi()) continue; | |
422 | fPhiEstimate = fPhic; | |
423 | AliITStrackSA* trs = new AliITStrackSA(); | |
424 | fPoint1[0]=primaryVertex[0]; | |
425 | fPoint1[1]=primaryVertex[1]; | |
426 | ||
427 | ||
428 | fPoint2[0]=arr->GetX(); | |
429 | fPoint2[1]=arr->GetY(); | |
deae0246 | 430 | for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++) nClusLay[i]=0; |
431 | nClusLay[0] = SearchClusters(0,fPhiWin[nloop],fLambdaWin[nloop],trs,primaryVertex[2],pflag); | |
432 | nClusLay[1] = SearchClusters(1,fPhiWin[nloop],fLambdaWin[nloop],trs,primaryVertex[2],pflag); | |
433 | if(nClusLay[1]>0){ | |
bef31448 | 434 | pflag=1; |
435 | fPoint3[0] = fPointc[0]; | |
436 | fPoint3[1] = fPointc[1]; | |
437 | } | |
deae0246 | 438 | nClusLay[2] = SearchClusters(2,fPhiWin[nloop],fLambdaWin[nloop],trs,primaryVertex[2],pflag); |
439 | if(nClusLay[1]==0 && nClusLay[2]==0) pflag=0; | |
440 | if(nClusLay[2]!=0 && nClusLay[1]!=0){ pflag=1; UpdatePoints();} | |
441 | if(nClusLay[2]!=0 && nClusLay[1]==0){ | |
bef31448 | 442 | pflag=1; |
443 | fPoint3[0]=fPointc[0]; | |
444 | fPoint3[1]=fPointc[1]; | |
445 | } | |
13918578 | 446 | |
deae0246 | 447 | nClusLay[3] = SearchClusters(3,fPhiWin[nloop],fLambdaWin[nloop],trs,primaryVertex[2],pflag); |
bef31448 | 448 | pflag=1; |
deae0246 | 449 | if(nClusLay[3]!=0) UpdatePoints(); |
450 | nClusLay[4] = SearchClusters(4,fPhiWin[nloop],fLambdaWin[nloop],trs,primaryVertex[2],pflag); | |
bef31448 | 451 | pflag=1; |
deae0246 | 452 | if(nClusLay[4]!=0) UpdatePoints(); |
453 | nClusLay[5] = SearchClusters(5,fPhiWin[nloop],fLambdaWin[nloop],trs,primaryVertex[2],pflag); | |
bef31448 | 454 | |
455 | ||
456 | Int_t layOK=0; | |
2755f080 | 457 | //check of the candidate track |
458 | for(Int_t nnp=0;nnp<AliITSgeomTGeo::GetNLayers();nnp++) { | |
deae0246 | 459 | if(nClusLay[nnp]!=0) layOK+=1; |
bef31448 | 460 | } |
7e5bf5af | 461 | |
5a03f353 | 462 | if(layOK>=minNPoints) { |
2755f080 | 463 | AliITStrackV2* tr2 = 0; |
ebda3140 | 464 | tr2 = FitTrack(trs,primaryVertex); |
2755f080 | 465 | if(!tr2) continue; |
7e5bf5af | 466 | |
bef31448 | 467 | AliESDtrack outtrack; |
468 | outtrack.UpdateTrackParams(tr2,AliESDtrack::kITSin); | |
469 | event->AddTrack(&outtrack); | |
bef31448 | 470 | ntrack++; |
bef31448 | 471 | } |
472 | delete trs; | |
7e5bf5af | 473 | }//end loop on clusters of layer1 |
7e5bf5af | 474 | //end loop2 |
ebda3140 | 475 | } |
2755f080 | 476 | |
2755f080 | 477 | |
7e5bf5af | 478 | |
ebda3140 | 479 | minNPoints--; |
7e5bf5af | 480 | |
ebda3140 | 481 | //if 5/6 points are required, second loop starting |
482 | //from second layer (SPD2), to find tracks with point of | |
483 | //layer 1 missing | |
484 | if(!fSixPoints) { | |
485 | //printf("looking from SPD2\n"); | |
486 | // counter for clusters on each layer | |
ebda3140 | 487 | for(Int_t nloop=0;nloop<fNloop;nloop++){ |
488 | Int_t ncl2=fCluLayer[1]->GetEntries(); | |
489 | while(ncl2--){ //loop starting from layer 2 | |
490 | ResetForFinding(); | |
491 | Int_t pflag=0; | |
492 | AliITSRecPoint* cl = (AliITSRecPoint*)fCluLayer[1]->At(ncl2); | |
493 | ||
494 | if(!cl) continue; | |
495 | AliITSclusterTable* arr = (AliITSclusterTable*)GetClusterCoord(1,ncl2); | |
496 | fPhic = arr->GetPhi(); | |
497 | fLambdac = arr->GetLambda(); | |
498 | fPhiEstimate = fPhic; | |
499 | ||
500 | AliITStrackSA* trs = new AliITStrackSA(); | |
501 | fPoint1[0]=primaryVertex[0]; | |
502 | fPoint1[1]=primaryVertex[1]; | |
503 | ||
504 | fPoint2[0]=arr->GetX(); | |
505 | fPoint2[1]=arr->GetY(); | |
deae0246 | 506 | for(Int_t kk=0;kk<AliITSgeomTGeo::GetNLayers();kk++) nClusLay[kk] = 0; |
507 | nClusLay[0] = SearchClusters(1,fPhiWin[nloop],fLambdaWin[nloop], | |
ebda3140 | 508 | trs,primaryVertex[2],pflag); |
deae0246 | 509 | nClusLay[1] = SearchClusters(2,fPhiWin[nloop],fLambdaWin[nloop], |
ebda3140 | 510 | trs,primaryVertex[2],pflag); |
deae0246 | 511 | if(nClusLay[1]!=0){ |
ebda3140 | 512 | pflag=1; |
513 | fPoint3[0]=fPointc[0]; | |
514 | fPoint3[1]=fPointc[1]; | |
515 | } | |
deae0246 | 516 | nClusLay[2]= SearchClusters(3,fPhiWin[nloop],fLambdaWin[nloop], |
ebda3140 | 517 | trs,primaryVertex[2],pflag); |
deae0246 | 518 | if(nClusLay[2]!=0){ |
ebda3140 | 519 | pflag=1; |
520 | UpdatePoints(); | |
521 | } | |
deae0246 | 522 | nClusLay[3]= SearchClusters(4,fPhiWin[nloop],fLambdaWin[nloop], |
ebda3140 | 523 | trs,primaryVertex[2],pflag); |
deae0246 | 524 | if(nClusLay[3]!=0){ |
ebda3140 | 525 | pflag=1; |
526 | UpdatePoints(); | |
527 | } | |
deae0246 | 528 | nClusLay[4]=SearchClusters(5,fPhiWin[nloop],fLambdaWin[nloop], |
ebda3140 | 529 | trs,primaryVertex[2],pflag); |
530 | ||
5a03f353 | 531 | Int_t layOK=0; |
ebda3140 | 532 | for(Int_t nnp=0;nnp<AliITSgeomTGeo::GetNLayers()-1;nnp++){ |
deae0246 | 533 | if(nClusLay[nnp]!=0) layOK+=1; |
ebda3140 | 534 | } |
5a03f353 | 535 | if(layOK>=minNPoints){ // 5/6 |
ebda3140 | 536 | AliITStrackV2* tr2 = 0; |
537 | tr2 = FitTrack(trs,primaryVertex); | |
538 | if(!tr2) continue; | |
539 | ||
540 | AliESDtrack outtrack; | |
541 | outtrack.UpdateTrackParams(tr2,AliESDtrack::kITSin); | |
542 | event->AddTrack(&outtrack); | |
543 | ntrack++; | |
544 | ||
545 | } | |
546 | ||
bef31448 | 547 | delete trs; |
548 | }//end loop on clusters of layer2 | |
ebda3140 | 549 | } |
550 | ||
ebda3140 | 551 | } //end opt="5/6" |
552 | ||
553 | // search for tracks starting from SPD2, SDD1, SDD2, SSD2 | |
554 | // for cosmics (A. Dainese 31.07.07) | |
555 | if(fOuterStartLayer>0) { | |
556 | for(Int_t innLay=1; innLay<=fOuterStartLayer; innLay++) { | |
557 | //printf("Searching from layer %d outward\n",innLay); | |
558 | minNPoints=AliITSgeomTGeo::GetNLayers()-innLay; | |
559 | for(Int_t i=innLay;i<AliITSgeomTGeo::GetNLayers();i++) | |
560 | if(AliITSReconstructor::GetRecoParam()->GetLayersToSkip(i)) | |
561 | minNPoints--; | |
562 | // counter for clusters on each layer | |
deae0246 | 563 | |
ebda3140 | 564 | for(Int_t nloop=0;nloop<fNloop;nloop++){ |
565 | Int_t nclInnLay=fCluLayer[innLay]->GetEntries(); | |
566 | while(nclInnLay--){ //loop starting from layer innLay | |
567 | ResetForFinding(); | |
568 | Int_t pflag=0; | |
569 | AliITSRecPoint* cl = (AliITSRecPoint*)fCluLayer[innLay]->At(nclInnLay); | |
570 | ||
571 | if(!cl) continue; | |
572 | AliITSclusterTable* arr = (AliITSclusterTable*)GetClusterCoord(innLay,nclInnLay); | |
573 | fPhic = arr->GetPhi(); | |
574 | fLambdac = arr->GetLambda(); | |
575 | fPhiEstimate = fPhic; | |
576 | ||
577 | AliITStrackSA* trs = new AliITStrackSA(); | |
578 | fPoint1[0]=primaryVertex[0]; | |
579 | fPoint1[1]=primaryVertex[1]; | |
580 | fPoint2[0]=arr->GetX(); | |
581 | fPoint2[1]=arr->GetY(); | |
582 | ||
583 | Int_t kk; | |
deae0246 | 584 | for(kk=0;kk<AliITSgeomTGeo::GetNLayers();kk++) nClusLay[kk] = 0; |
ebda3140 | 585 | |
586 | kk=0; | |
deae0246 | 587 | nClusLay[kk] = SearchClusters(innLay,fPhiWin[nloop],fLambdaWin[nloop], |
b8ed1a92 | 588 | trs,primaryVertex[2],pflag); |
ebda3140 | 589 | for(Int_t nextLay=innLay+1; nextLay<AliITSgeomTGeo::GetNLayers(); nextLay++) { |
590 | kk++; | |
deae0246 | 591 | nClusLay[kk] = SearchClusters(nextLay,fPhiWin[nloop],fLambdaWin[nloop], |
ebda3140 | 592 | trs,primaryVertex[2],pflag); |
deae0246 | 593 | if(nClusLay[kk]!=0){ |
ebda3140 | 594 | pflag=1; |
595 | if(kk==1) { | |
596 | fPoint3[0]=fPointc[0]; | |
597 | fPoint3[1]=fPointc[1]; | |
598 | } else { | |
599 | UpdatePoints(); | |
600 | } | |
601 | } | |
602 | } | |
603 | ||
5a03f353 | 604 | Int_t layOK=0; |
ebda3140 | 605 | for(Int_t nnp=0;nnp<AliITSgeomTGeo::GetNLayers()-innLay;nnp++){ |
deae0246 | 606 | if(nClusLay[nnp]!=0) layOK+=1; |
ebda3140 | 607 | } |
5a03f353 | 608 | if(layOK>=minNPoints){ |
ebda3140 | 609 | AliITStrackV2* tr2 = 0; |
610 | tr2 = FitTrack(trs,primaryVertex); | |
611 | if(!tr2) continue; | |
612 | ||
613 | ||
614 | AliESDtrack outtrack; | |
615 | outtrack.UpdateTrackParams(tr2,AliESDtrack::kITSin); | |
616 | event->AddTrack(&outtrack); | |
617 | ntrack++; | |
618 | ||
619 | } | |
620 | ||
621 | delete trs; | |
622 | }//end loop on clusters of innLay | |
623 | } //end loop on window sizes | |
624 | ||
ebda3140 | 625 | } //end loop on innLay |
626 | } //end if(fOuterStartLayer>0) | |
627 | ||
5a03f353 | 628 | |
629 | // search for 1-point tracks, only for cosmics | |
630 | // (A.Dainese 21.03.08) | |
631 | if(AliITSReconstructor::GetRecoParam()->GetSAOnePointTracks() && | |
632 | TMath::Abs(event->GetMagneticField())<0.01) { | |
633 | for(Int_t innLay=0; innLay<=fOuterStartLayer; innLay++) { | |
634 | // counter for clusters on each layer | |
deae0246 | 635 | |
5a03f353 | 636 | for(Int_t nloop=0;nloop<fNloop;nloop++){ |
637 | Int_t nclInnLay=fCluLayer[innLay]->GetEntries(); | |
638 | while(nclInnLay--){ //loop starting from layer innLay | |
639 | ResetForFinding(); | |
640 | Int_t pflag=0; | |
641 | AliITSRecPoint* cl = (AliITSRecPoint*)fCluLayer[innLay]->At(nclInnLay); | |
642 | ||
643 | if(!cl) continue; | |
644 | AliITSclusterTable* arr = (AliITSclusterTable*)GetClusterCoord(innLay,nclInnLay); | |
645 | fPhic = arr->GetPhi(); | |
646 | fLambdac = arr->GetLambda(); | |
647 | fPhiEstimate = fPhic; | |
648 | ||
649 | AliITStrackSA* trs = new AliITStrackSA(); | |
650 | fPoint1[0]=primaryVertex[0]; | |
651 | fPoint1[1]=primaryVertex[1]; | |
652 | fPoint2[0]=arr->GetX(); | |
653 | fPoint2[1]=arr->GetY(); | |
654 | ||
655 | Int_t kk; | |
deae0246 | 656 | for(kk=0;kk<AliITSgeomTGeo::GetNLayers();kk++) nClusLay[kk] = 0; |
5a03f353 | 657 | |
658 | kk=0; | |
deae0246 | 659 | nClusLay[kk] = SearchClusters(innLay,fPhiWin[nloop],fLambdaWin[nloop], |
5a03f353 | 660 | trs,primaryVertex[2],pflag); |
661 | for(Int_t nextLay=innLay+1; nextLay<AliITSgeomTGeo::GetNLayers(); nextLay++) { | |
662 | kk++; | |
deae0246 | 663 | nClusLay[kk] = SearchClusters(nextLay,fPhiWin[nloop],fLambdaWin[nloop], |
5a03f353 | 664 | trs,primaryVertex[2],pflag); |
deae0246 | 665 | if(nClusLay[kk]!=0){ |
5a03f353 | 666 | pflag=1; |
667 | if(kk==1) { | |
668 | fPoint3[0]=fPointc[0]; | |
669 | fPoint3[1]=fPointc[1]; | |
670 | } else { | |
671 | UpdatePoints(); | |
672 | } | |
673 | } | |
674 | } | |
675 | ||
676 | Int_t layOK=0; | |
677 | for(Int_t nnp=0;nnp<AliITSgeomTGeo::GetNLayers()-innLay;nnp++){ | |
deae0246 | 678 | if(nClusLay[nnp]!=0) layOK+=1; |
5a03f353 | 679 | } |
680 | if(layOK==1) { | |
681 | AliITStrackV2* tr2 = 0; | |
682 | Bool_t onePoint = kTRUE; | |
683 | tr2 = FitTrack(trs,primaryVertex,onePoint); | |
684 | if(!tr2) continue; | |
685 | ||
686 | AliESDtrack outtrack; | |
687 | outtrack.UpdateTrackParams(tr2,AliESDtrack::kITSin); | |
688 | event->AddTrack(&outtrack); | |
689 | ntrack++; | |
690 | ||
691 | } | |
692 | ||
693 | delete trs; | |
694 | }//end loop on clusters of innLay | |
695 | } //end loop on window sizes | |
696 | ||
5a03f353 | 697 | } //end loop on innLay |
698 | } // end search 1-point tracks | |
ebda3140 | 699 | |
bef31448 | 700 | Info("FindTracks","Number of found tracks: %d",event->GetNumberOfTracks()); |
2257f27e | 701 | return 0; |
bef31448 | 702 | |
703 | } | |
7e5bf5af | 704 | |
13918578 | 705 | //________________________________________________________________________ |
706 | ||
5a03f353 | 707 | AliITStrackV2* AliITStrackerSA::FitTrack(AliITStrackSA* tr,Double_t *primaryVertex,Bool_t onePoint) { |
ebda3140 | 708 | //fit of the found track (most general case, also <6 points, layers missing) |
709 | // A.Dainese 16.11.07 | |
13918578 | 710 | |
13918578 | 711 | |
deae0246 | 712 | const Int_t kMaxClu=AliITStrackSA::kMaxNumberOfClusters; |
13918578 | 713 | |
deae0246 | 714 | static Int_t firstmod[AliITSgeomTGeo::kNLayers]; |
715 | ||
716 | static Int_t clind[AliITSgeomTGeo::kNLayers][kMaxClu]; | |
717 | static Int_t clmark[AliITSgeomTGeo::kNLayers][kMaxClu]; | |
718 | static Int_t nnn[AliITSgeomTGeo::kNLayers]; | |
719 | static Int_t kkk[AliITSgeomTGeo::kNLayers]; | |
720 | static Int_t end[AliITSgeomTGeo::kNLayers]; | |
721 | static AliITSRecPoint *listlayer[AliITSgeomTGeo::kNLayers][kMaxClu]; | |
13918578 | 722 | |
ebda3140 | 723 | for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++) { |
b8ed1a92 | 724 | firstmod[i]=AliITSgeomTGeo::GetModuleIndex(i+1,1,1); |
ebda3140 | 725 | nnn[i]=0; |
726 | kkk[i]=0; | |
deae0246 | 727 | end[i]=0; |
728 | for(Int_t j=0;j<kMaxClu; j++){ | |
ebda3140 | 729 | clind[i][j]=0; |
730 | clmark[i][j]=0; | |
deae0246 | 731 | listlayer[i][j]=0; |
732 | } | |
b8ed1a92 | 733 | } |
2755f080 | 734 | |
2755f080 | 735 | |
736 | Int_t nclusters = tr->GetNumberOfClustersSA(); | |
2755f080 | 737 | for(Int_t ncl=0;ncl<nclusters;ncl++){ |
738 | Int_t index = tr->GetClusterIndexSA(ncl); | |
739 | AliITSRecPoint* cl = (AliITSRecPoint*)GetCluster(index); | |
740 | if(cl->TestBit(kSAflag)==kTRUE) cl->ResetBit(kSAflag); | |
741 | Int_t lay = (index & 0xf0000000) >> 28; | |
deae0246 | 742 | Int_t nInLay=end[lay]; |
743 | listlayer[lay][nInLay]=cl; | |
ebda3140 | 744 | Int_t ind=nnn[lay]; |
745 | clind[lay][ind]=index; | |
deae0246 | 746 | end[lay]++; |
2755f080 | 747 | } |
2755f080 | 748 | |
749 | for(Int_t nlay=0;nlay<AliITSgeomTGeo::GetNLayers();nlay++){ | |
750 | for(Int_t ncl=0;ncl<tr->GetNumberOfMarked(nlay);ncl++){ | |
751 | Int_t mark = tr->GetClusterMark(nlay,ncl); | |
ebda3140 | 752 | Int_t ind=kkk[nlay]; |
753 | clmark[nlay][ind]=mark; | |
2755f080 | 754 | } |
755 | } | |
756 | ||
2755f080 | 757 | |
758 | Int_t firstLay=-1,secondLay=-1; | |
2755f080 | 759 | for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++) { |
deae0246 | 760 | if(end[i]==0) { |
2755f080 | 761 | end[i]=1; |
deae0246 | 762 | }else{ |
2755f080 | 763 | if(firstLay==-1) { |
764 | firstLay=i; | |
765 | } else if(secondLay==-1) { | |
766 | secondLay=i; | |
767 | } | |
768 | } | |
769 | } | |
770 | ||
deae0246 | 771 | if(firstLay==-1 || (secondLay==-1 && !onePoint)) return 0; |
772 | ||
2755f080 | 773 | for(Int_t l0=0;l0<end[0];l0++){ //loop on layer 1 |
deae0246 | 774 | AliITSRecPoint* cl0 = (AliITSRecPoint*)listlayer[0][l0]; |
2755f080 | 775 | for(Int_t l1=0;l1<end[1];l1++){ //loop on layer 2 |
deae0246 | 776 | AliITSRecPoint* cl1 = (AliITSRecPoint*)listlayer[1][l1]; |
2755f080 | 777 | for(Int_t l2=0;l2<end[2];l2++){ //loop on layer 3 |
deae0246 | 778 | AliITSRecPoint* cl2 = (AliITSRecPoint*)listlayer[2][l2]; |
2755f080 | 779 | for(Int_t l3=0;l3<end[3];l3++){ //loop on layer 4 |
deae0246 | 780 | AliITSRecPoint* cl3 = (AliITSRecPoint*)listlayer[3][l3]; |
2755f080 | 781 | for(Int_t l4=0;l4<end[4];l4++){ //loop on layer 5 |
deae0246 | 782 | AliITSRecPoint* cl4 = (AliITSRecPoint*)listlayer[4][l4]; |
2755f080 | 783 | for(Int_t l5=0;l5<end[5];l5++){ //loop on layer 6 |
deae0246 | 784 | AliITSRecPoint* cl5 = (AliITSRecPoint*)listlayer[5][l5]; |
2755f080 | 785 | |
786 | ||
787 | Double_t x1,y1,z1,sx1,sy1,sz1; | |
788 | Double_t x2,y2,z2,sx2,sy2,sz2; | |
789 | AliITSRecPoint* p1=0; | |
790 | AliITSRecPoint* p2=0; | |
791 | Int_t index1=0,index2=0; | |
792 | Int_t mrk1=0,mrk2=0; | |
793 | ||
794 | switch(firstLay) { | |
795 | case 0: | |
796 | p1=cl0; | |
ebda3140 | 797 | index1=clind[0][l0];mrk1=clmark[0][l0]; |
2755f080 | 798 | break; |
799 | case 1: | |
800 | p1=cl1; | |
ebda3140 | 801 | index1=clind[1][l1];mrk1=clmark[1][l1]; |
2755f080 | 802 | break; |
803 | case 2: | |
804 | p1=cl2; | |
ebda3140 | 805 | index1=clind[2][l2];mrk1=clmark[2][l2]; |
2755f080 | 806 | break; |
807 | case 3: | |
808 | p1=cl3; | |
ebda3140 | 809 | index1=clind[3][l3];mrk1=clmark[3][l3]; |
2755f080 | 810 | break; |
811 | case 4: | |
812 | p1=cl4; | |
ebda3140 | 813 | index1=clind[4][l4];mrk1=clmark[4][l4]; |
2755f080 | 814 | break; |
815 | } | |
816 | ||
817 | switch(secondLay) { | |
818 | case 1: | |
819 | p2=cl1; | |
ebda3140 | 820 | index2=clind[1][l1];mrk2=clmark[1][l1]; |
2755f080 | 821 | break; |
822 | case 2: | |
823 | p2=cl2; | |
ebda3140 | 824 | index2=clind[2][l2];mrk2=clmark[2][l2]; |
2755f080 | 825 | break; |
826 | case 3: | |
827 | p2=cl3; | |
ebda3140 | 828 | index2=clind[3][l3];mrk2=clmark[3][l3]; |
2755f080 | 829 | break; |
830 | case 4: | |
831 | p2=cl4; | |
ebda3140 | 832 | index2=clind[4][l4];mrk2=clmark[4][l4]; |
2755f080 | 833 | break; |
834 | case 5: | |
835 | p2=cl5; | |
ebda3140 | 836 | index2=clind[5][l5];mrk2=clmark[5][l5]; |
2755f080 | 837 | break; |
5a03f353 | 838 | default: |
839 | p2=0; | |
840 | index2=-1;mrk2=-1; | |
841 | break; | |
2755f080 | 842 | } |
843 | ||
844 | Int_t module1 = p1->GetDetectorIndex()+firstmod[firstLay]; | |
5a03f353 | 845 | Int_t layer,ladder,detector; |
846 | AliITSgeomTGeo::GetModuleId(module1,layer,ladder,detector); | |
847 | Float_t yclu1 = p1->GetY(); | |
848 | Float_t zclu1 = p1->GetZ(); | |
849 | Double_t cv=0,tgl2=0,phi2=0; | |
2755f080 | 850 | |
851 | Int_t cln1=mrk1; | |
2755f080 | 852 | AliITSclusterTable* arr1 = (AliITSclusterTable*)GetClusterCoord(firstLay,cln1); |
2755f080 | 853 | x1 = arr1->GetX(); |
2755f080 | 854 | y1 = arr1->GetY(); |
2755f080 | 855 | z1 = arr1->GetZ(); |
2755f080 | 856 | sx1 = arr1->GetSx(); |
2755f080 | 857 | sy1 = arr1->GetSy(); |
2755f080 | 858 | sz1 = arr1->GetSz(); |
225a692b | 859 | |
5a03f353 | 860 | if(secondLay>0) { |
861 | Int_t cln2=mrk2; | |
862 | AliITSclusterTable* arr2 = (AliITSclusterTable*)GetClusterCoord(secondLay,cln2); | |
863 | x2 = arr2->GetX(); | |
864 | y2 = arr2->GetY(); | |
865 | z2 = arr2->GetZ(); | |
866 | sx2 = arr2->GetSx(); | |
867 | sy2 = arr2->GetSy(); | |
868 | sz2 = arr2->GetSz(); | |
869 | cv = Curvature(primaryVertex[0],primaryVertex[1],x1,y1,x2,y2); | |
870 | tgl2 = (z2-z1)/TMath::Sqrt((x2-x1)*(x2-x1)+(y2-y1)*(y2-y1)); | |
871 | phi2 = TMath::ATan2((y2-y1),(x2-x1)); | |
872 | } else { // special case of 1-point tracks, only for cosmics (B=0) | |
873 | x2 = primaryVertex[0]; | |
874 | y2 = primaryVertex[1]; | |
875 | z2 = primaryVertex[2]; | |
876 | cv = 0; | |
877 | tgl2 = (z1-z2)/TMath::Sqrt((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2)); | |
878 | phi2 = TMath::ATan2((y1-y2),(x1-x2)); | |
879 | } | |
880 | ||
881 | ||
2755f080 | 882 | AliITStrackSA* trac = new AliITStrackSA(layer,ladder,detector,yclu1,zclu1,phi2,tgl2,cv,1); |
225a692b | 883 | |
884 | ||
2755f080 | 885 | if(cl5!=0) { |
ebda3140 | 886 | trac->AddClusterV2(5,(clind[5][l5] & 0x0fffffff)>>0); |
887 | trac->AddClusterMark(5,clmark[5][l5]); | |
b8ed1a92 | 888 | } |
889 | if(cl4!=0){ | |
ebda3140 | 890 | trac->AddClusterV2(4,(clind[4][l4] & 0x0fffffff)>>0); |
891 | trac->AddClusterMark(4,clmark[4][l4]); | |
b8ed1a92 | 892 | } |
893 | if(cl3!=0){ | |
ebda3140 | 894 | trac->AddClusterV2(3,(clind[3][l3] & 0x0fffffff)>>0); |
895 | trac->AddClusterMark(3,clmark[3][l3]); | |
b8ed1a92 | 896 | } |
897 | if(cl2!=0){ | |
ebda3140 | 898 | trac->AddClusterV2(2,(clind[2][l2] & 0x0fffffff)>>0); |
899 | trac->AddClusterMark(2,clmark[2][l2]); | |
b8ed1a92 | 900 | } |
901 | if(cl1!=0){ | |
ebda3140 | 902 | trac->AddClusterV2(1,(clind[1][l1] & 0x0fffffff)>>0); |
903 | trac->AddClusterMark(1,clmark[1][l1]); | |
b8ed1a92 | 904 | } |
905 | if(cl0!=0){ | |
ebda3140 | 906 | trac->AddClusterV2(0,(clind[0][l0] & 0x0fffffff)>>0); |
907 | trac->AddClusterMark(0,clmark[0][l0]); | |
b8ed1a92 | 908 | } |
909 | ||
b8ed1a92 | 910 | //fit with Kalman filter using AliITStrackerMI::RefitAt() |
911 | AliITStrackMI* ot = new AliITStrackSA(*trac); | |
912 | ||
913 | ot->ResetCovariance(10.); | |
914 | ot->ResetClusters(); | |
915 | ||
e50912db | 916 | if(RefitAt(AliITSRecoParam::GetrInsideITSscreen(),ot,trac)){ //fit from layer 1 to layer 6 |
b8ed1a92 | 917 | AliITStrackMI *otrack2 = new AliITStrackMI(*ot); |
918 | otrack2->ResetCovariance(10.); | |
919 | otrack2->ResetClusters(); | |
920 | //fit from layer 6 to layer 1 | |
e50912db | 921 | if(RefitAt(AliITSRecoParam::GetrInsideSPD1(),otrack2,ot)) { |
b8ed1a92 | 922 | fListOfTracks->AddLast(otrack2); |
deae0246 | 923 | fListOfSATracks->AddLast(trac); |
b8ed1a92 | 924 | } else { |
925 | delete otrack2; | |
deae0246 | 926 | delete trac; |
b8ed1a92 | 927 | } |
928 | ||
929 | } | |
930 | ||
931 | delete ot; | |
b8ed1a92 | 932 | }//end loop layer 6 |
933 | }//end loop layer 5 | |
934 | }//end loop layer 4 | |
935 | }//end loop layer 3 | |
936 | }//end loop layer 2 | |
937 | }//end loop layer 1 | |
938 | ||
b8ed1a92 | 939 | |
225a692b | 940 | |
b8ed1a92 | 941 | |
deae0246 | 942 | if(fListOfTracks->GetEntries()==0) return 0; |
b8ed1a92 | 943 | |
deae0246 | 944 | Int_t lowchi2 = FindTrackLowChiSquare(); |
b8ed1a92 | 945 | AliITStrackV2* otrack =(AliITStrackV2*)fListOfTracks->At(lowchi2); |
deae0246 | 946 | AliITStrackSA* trsa = (AliITStrackSA*)fListOfSATracks->At(lowchi2); |
b8ed1a92 | 947 | |
deae0246 | 948 | if(otrack==0) return 0; |
949 | ||
950 | Int_t indexc[AliITSgeomTGeo::kNLayers]; | |
b8ed1a92 | 951 | for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++) indexc[i]=0; |
952 | for(Int_t nind=0;nind<otrack->GetNumberOfClusters();nind++){ | |
953 | indexc[nind] = otrack->GetClusterIndex(nind); | |
954 | } | |
955 | Int_t labl[6][3]; | |
956 | for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++) { | |
957 | if(i<otrack->GetNumberOfClusters()) { | |
958 | AliITSRecPoint* cl = (AliITSRecPoint*)GetCluster(indexc[i]); | |
959 | labl[i][0]=cl->GetLabel(0); | |
960 | labl[i][1]=cl->GetLabel(1); | |
961 | labl[i][2]=cl->GetLabel(2); | |
962 | } else { | |
963 | labl[i][0]=-1; | |
964 | labl[i][1]=-1; | |
965 | labl[i][2]=-1; | |
966 | } | |
967 | } | |
2755f080 | 968 | |
b8ed1a92 | 969 | CookLabel(otrack,0.); //MI change - to see fake ratio |
970 | ||
971 | Int_t label=FindLabel(labl[0][0],labl[1][0],labl[2][0],labl[3][0],labl[4][0],labl[5][0]); | |
972 | Int_t lflag=0; | |
2755f080 | 973 | for(Int_t i=0;i<otrack->GetNumberOfClusters();i++) |
b8ed1a92 | 974 | if(labl[i][0]==label || labl[i][1]==label || labl[i][2]==label) lflag++; |
975 | ||
2755f080 | 976 | if(lflag<otrack->GetNumberOfClusters()) label = -label; |
b8ed1a92 | 977 | otrack->SetLabel(label); |
978 | ||
979 | //remove clusters of found track | |
980 | for(Int_t nlay=0;nlay<AliITSgeomTGeo::GetNLayers();nlay++){ | |
981 | for(Int_t cln=0;cln<trsa->GetNumberOfMarked(nlay);cln++){ | |
982 | Int_t index = trsa->GetClusterMark(nlay,cln); | |
983 | fCluLayer[nlay]->RemoveAt(index); | |
984 | RemoveClusterCoord(nlay,index); | |
985 | fCluLayer[nlay]->Compress(); | |
7e5bf5af | 986 | } |
987 | } | |
7e5bf5af | 988 | |
13918578 | 989 | return otrack; |
990 | ||
991 | } | |
992 | ||
bef31448 | 993 | |
4e05ab9a | 994 | |
bef31448 | 995 | //_______________________________________________________ |
7e5bf5af | 996 | Int_t AliITStrackerSA::SearchClusters(Int_t layer,Double_t phiwindow,Double_t lambdawindow, AliITStrackSA* trs,Double_t /*zvertex*/,Int_t pflag){ |
13918578 | 997 | //function used to to find the clusters associated to the track |
2755f080 | 998 | |
999 | if(AliITSReconstructor::GetRecoParam()->GetLayersToSkip(layer)) return 0; | |
1000 | ||
13918578 | 1001 | Int_t nc=0; |
1002 | AliITSlayer &lay = fgLayers[layer]; | |
7e5bf5af | 1003 | Double_t r=lay.GetR(); |
2755f080 | 1004 | if(pflag==1){ |
cfe729e0 | 1005 | Float_t cx1,cx2,cy1,cy2; |
1006 | FindEquation(fPoint1[0],fPoint1[1],fPoint2[0],fPoint2[1],fPoint3[0],fPoint3[1],fCoef1,fCoef2,fCoef3); | |
1007 | if (FindIntersection(fCoef1,fCoef2,fCoef3,-r*r,cx1,cy1,cx2,cy2)==0) | |
1008 | return 0; | |
1966f03c | 1009 | Double_t fi1=TMath::ATan2(cy1-fPoint1[1],cx1-fPoint1[0]); |
1010 | Double_t fi2=TMath::ATan2(cy2-fPoint1[1],cx2-fPoint1[0]); | |
cfe729e0 | 1011 | fPhiEstimate=ChoosePoint(fi1,fi2,fPhic); |
1012 | } | |
13918578 | 1013 | |
7e5bf5af | 1014 | |
1015 | Int_t ncl = fCluLayer[layer]->GetEntries(); | |
1016 | for (Int_t index=0; index<ncl; index++) { | |
00a7cc50 | 1017 | AliITSRecPoint *c = (AliITSRecPoint*)fCluLayer[layer]->At(index); |
7e5bf5af | 1018 | if (!c) continue; |
1019 | if (c->GetQ()<=0) continue; | |
1020 | ||
1021 | AliITSclusterTable* arr = (AliITSclusterTable*)GetClusterCoord(layer,index); | |
1022 | Double_t phi = arr->GetPhi(); | |
cfe729e0 | 1023 | if (TMath::Abs(phi-fPhiEstimate)>phiwindow) continue; |
494fda7c | 1024 | |
7e5bf5af | 1025 | Double_t lambda = arr->GetLambda(); |
cfe729e0 | 1026 | if (TMath::Abs(lambda-fLambdac)>lambdawindow) continue; |
1027 | ||
7e5bf5af | 1028 | if(trs->GetNumberOfClustersSA()==trs->GetMaxNumberOfClusters()) return 0; |
1029 | if(trs->GetNumberOfMarked(layer)==trs->GetMaxNMarkedPerLayer()) return 0; | |
1030 | Int_t orind = arr->GetOrInd(); | |
1031 | trs->AddClusterSA(layer,orind); | |
1032 | trs->AddClusterMark(layer,index); | |
1033 | ||
cfe729e0 | 1034 | nc++; |
1035 | fLambdac=lambda; | |
1036 | fPhiEstimate=phi; | |
cfe729e0 | 1037 | |
7e5bf5af | 1038 | fPointc[0]=arr->GetX(); |
1039 | fPointc[1]=arr->GetY(); | |
1040 | ||
cfe729e0 | 1041 | } |
1042 | return nc; | |
1043 | } | |
13918578 | 1044 | |
bef31448 | 1045 | //________________________________________________________________ |
1046 | void AliITStrackerSA::UpdatePoints(){ | |
1047 | //update of points for the estimation of the curvature | |
13918578 | 1048 | |
bef31448 | 1049 | fPoint2[0]=fPoint3[0]; |
1050 | fPoint2[1]=fPoint3[1]; | |
1051 | fPoint3[0]=fPointc[0]; | |
1052 | fPoint3[1]=fPointc[1]; | |
13918578 | 1053 | |
1054 | ||
13918578 | 1055 | } |
13918578 | 1056 | |
13918578 | 1057 | //___________________________________________________________________ |
1058 | 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){ | |
1059 | ||
1060 | //given (x,y) of three recpoints (in global coordinates) | |
1061 | //returns the parameters a,b,c of circonference x*x + y*y +a*x + b*y +c | |
1062 | ||
1063 | Float_t den = (x3-x1)*(y2-y1)-(x2-x1)*(y3-y1); | |
1064 | if(den==0) return 0; | |
1065 | a = ((y3-y1)*(x2*x2+y2*y2-x1*x1-y1*y1)-(y2-y1)*(x3*x3+y3*y3-x1*x1-y1*y1))/den; | |
1066 | b = -(x2*x2-x1*x1+y2*y2-y1*y1+a*(x2-x1))/(y2-y1); | |
1067 | c = -x1*x1-y1*y1-a*x1-b*y1; | |
1068 | return 1; | |
1069 | } | |
1070 | //__________________________________________________________________________ | |
1071 | 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){ | |
1072 | ||
1073 | //Finds the intersection between the circonference of the track and the circonference centered in (0,0) represented by one layer | |
1074 | //c2 is -rlayer*rlayer | |
1075 | ||
1076 | if(a1==0) return 0; | |
3a2f227d | 1077 | Double_t m = c2-c1; |
1078 | Double_t aA = (b1*b1)/(a1*a1)+1; | |
1079 | Double_t bB = (-2*m*b1/(a1*a1)); | |
1080 | Double_t cC = c2+(m*m)/(a1*a1); | |
1081 | Double_t dD = bB*bB-4*aA*cC; | |
1082 | if(dD<0) return 0; | |
13918578 | 1083 | |
3a2f227d | 1084 | y1 = (-bB+TMath::Sqrt(dD))/(2*aA); |
1085 | y2 = (-bB-TMath::Sqrt(dD))/(2*aA); | |
13918578 | 1086 | x1 = (c2-c1-b1*y1)/a1; |
1087 | x2 = (c2-c1-b1*y2)/a1; | |
1088 | ||
1089 | return 1; | |
1090 | } | |
1091 | //____________________________________________________________________ | |
1092 | Double_t AliITStrackerSA::Curvature(Double_t x1,Double_t y1,Double_t | |
1093 | x2,Double_t y2,Double_t x3,Double_t y3){ | |
1094 | ||
1095 | //calculates the curvature of track | |
1096 | Double_t den = (x3-x1)*(y2-y1)-(x2-x1)*(y3-y1); | |
1097 | if(den==0) return 0; | |
1098 | Double_t a = ((y3-y1)*(x2*x2+y2*y2-x1*x1-y1*y1)-(y2-y1)*(x3*x3+y3*y3-x1*x1-y1*y1))/den; | |
1099 | Double_t b = -(x2*x2-x1*x1+y2*y2-y1*y1+a*(x2-x1))/(y2-y1); | |
1100 | Double_t c = -x1*x1-y1*y1-a*x1-b*y1; | |
1101 | Double_t xc=-a/2.; | |
1102 | ||
1103 | if((a*a+b*b-4*c)<0) return 0; | |
1104 | Double_t rad = TMath::Sqrt(a*a+b*b-4*c)/2.; | |
1105 | if(rad==0) return 0; | |
1106 | ||
1107 | if((x1>0 && y1>0 && x1<xc)) rad*=-1; | |
1108 | if((x1<0 && y1>0 && x1<xc)) rad*=-1; | |
1109 | // if((x1<0 && y1<0 && x1<xc)) rad*=-1; | |
1110 | // if((x1>0 && y1<0 && x1<xc)) rad*=-1; | |
1111 | ||
1112 | return 1/rad; | |
1113 | ||
1114 | } | |
7e5bf5af | 1115 | |
1116 | ||
13918578 | 1117 | //____________________________________________________________________ |
1118 | Double_t AliITStrackerSA::ChoosePoint(Double_t p1, Double_t p2, Double_t pp){ | |
1119 | ||
1120 | //Returns the point closest to pp | |
1121 | ||
1122 | Double_t diff1 = p1-pp; | |
1123 | Double_t diff2 = p2-pp; | |
1124 | ||
1125 | if(TMath::Abs(diff1)<TMath::Abs(diff2)) fPhiEstimate=p1; | |
1126 | else fPhiEstimate=p2; | |
1127 | return fPhiEstimate; | |
1128 | ||
1129 | } | |
1130 | ||
1131 | ||
1132 | //_________________________________________________________________ | |
deae0246 | 1133 | Int_t AliITStrackerSA::FindTrackLowChiSquare() const { |
1134 | // returns track with lowest chi square | |
1135 | Int_t dim=fListOfTracks->GetEntries(); | |
1136 | if(dim<=1) return 0; | |
1137 | AliITStrackV2* trk = (AliITStrackV2*)fListOfTracks->At(0); | |
1138 | Double_t minChi2=trk->GetChi2(); | |
1139 | Int_t index=0; | |
1140 | for(Int_t i=1;i<dim;i++){ | |
1141 | AliITStrackV2* trk = (AliITStrackV2*)fListOfTracks->At(i); | |
1142 | Double_t chi2=trk->GetChi2(); | |
1143 | if(chi2<minChi2){ | |
1144 | minChi2=chi2; | |
1145 | index=i; | |
13918578 | 1146 | } |
13918578 | 1147 | } |
deae0246 | 1148 | return index; |
13918578 | 1149 | } |
1150 | ||
1151 | //__________________________________________________________ | |
2755f080 | 1152 | Int_t AliITStrackerSA::FindLabel(Int_t l0, Int_t l1, Int_t l2, Int_t l3, Int_t l4, Int_t l5){ |
13918578 | 1153 | |
1154 | //function used to determine the track label | |
1155 | ||
2755f080 | 1156 | Int_t lb[6] = {l0,l1,l2,l3,l4,l5}; |
13918578 | 1157 | Int_t aa[6]={1,1,1,1,1,1}; |
1158 | Int_t ff=0; | |
1159 | Int_t ll=0; | |
1160 | Int_t k=0;Int_t w=0;Int_t num=6; | |
8b3779ef | 1161 | for(Int_t i=5;i>=0;i--) if(lb[i]==-1) num=i; |
13918578 | 1162 | |
1163 | while(k<num){ | |
1164 | ||
1165 | for(Int_t i=k+1;i<num;i++){ | |
1166 | ||
1167 | if(lb[k]==lb[i] && aa[k]!=0){ | |
1168 | ||
1169 | aa[k]+=1; | |
1170 | aa[i]=0; | |
1171 | } | |
1172 | } | |
8b3779ef | 1173 | k++; |
13918578 | 1174 | } |
1175 | ||
1176 | while(w<num){ | |
8b3779ef | 1177 | |
13918578 | 1178 | for(Int_t j=0;j<6;j++){ |
1179 | if(aa[w]<aa[j]){ | |
1180 | ff=aa[w]; | |
1181 | aa[w]=aa[j]; | |
1182 | aa[j]=ff; | |
1183 | ll=lb[w]; | |
1184 | lb[w]=lb[j]; | |
1185 | lb[j]=ll; | |
1186 | } | |
1187 | } | |
8b3779ef | 1188 | w++; |
13918578 | 1189 | } |
8b3779ef | 1190 | |
1191 | if(num<1) return -1; | |
1192 | return lb[num-1]; | |
13918578 | 1193 | } |
1194 | ||
1195 | //_____________________________________________________________________________ | |
1196 | 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 | 1197 | 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 | 1198 | |
1199 | ||
1200 | //function used to assign label to the found track. If track is fake, the label is negative | |
1201 | ||
1202 | Int_t lb0[6] = {gl1,gl2,gl3,gl4,gl5,gl6}; | |
1203 | Int_t lb1[6] = {gl7,gl8,gl9,gl10,gl11,gl12}; | |
1204 | Int_t lb2[6] = {gl13,gl14,gl15,gl16,gl17,gl18}; | |
1205 | Int_t ll=FindLabel(lb0[0],lb0[1],lb0[2],lb0[3],lb0[4],lb0[5]); | |
1206 | Int_t lflag=0;Int_t num=6; | |
1207 | if(lb0[5]==-1 && lb1[5]==-1 && lb2[5]==-1) num=5; | |
1208 | ||
1209 | for(Int_t i=0;i<num;i++){ | |
1210 | if(lb0[i]==ll || lb1[i]==ll || lb2[i]==ll) lflag+=1; | |
1211 | } | |
1212 | ||
2755f080 | 1213 | if(lflag>=minNPoints) return ll; |
13918578 | 1214 | else return -ll; |
1215 | ||
1216 | ||
1217 | } | |
13918578 | 1218 | //_____________________________________________________________________________ |
5b4dedce | 1219 | void AliITStrackerSA::SetCalculatedWindowSizes(Int_t n, Float_t phimin, Float_t phimax, Float_t lambdamin, Float_t lambdamax){ |
1220 | // Set sizes of the phi and lambda windows used for track finding | |
1221 | fNloop = n; | |
1222 | if(fPhiWin) delete [] fPhiWin; | |
1223 | if(fLambdaWin) delete [] fLambdaWin; | |
1224 | fPhiWin = new Double_t[fNloop]; | |
1225 | fLambdaWin = new Double_t[fNloop]; | |
1226 | Float_t stepPhi=(phimax-phimin)/(Float_t)(fNloop-1); | |
1227 | Float_t stepLambda=(lambdamax-lambdamin)/(Float_t)(fNloop-1); | |
1228 | for(Int_t k=0;k<fNloop;k++){ | |
1229 | Float_t phi=phimin+k*stepPhi; | |
1230 | Float_t lam=lambdamin+k*stepLambda; | |
1231 | fPhiWin[k]=phi; | |
1232 | fLambdaWin[k]=lam; | |
1233 | } | |
1234 | } | |
1235 | //_____________________________________________________________________________ | |
1236 | void AliITStrackerSA::SetFixedWindowSizes(Int_t n, Double_t *phi, Double_t *lam){ | |
13918578 | 1237 | // Set sizes of the phi and lambda windows used for track finding |
1238 | fNloop = n; | |
1239 | if(phi){ // user defined values | |
1240 | fPhiWin = new Double_t[fNloop]; | |
1241 | fLambdaWin = new Double_t[fNloop]; | |
1242 | for(Int_t k=0;k<fNloop;k++){ | |
1243 | fPhiWin[k]=phi[k]; | |
1244 | fLambdaWin[k]=lam[k]; | |
1245 | } | |
1246 | } | |
1247 | else { // default values | |
627b6db6 | 1248 | |
1249 | Double_t phid[33] = {0.002,0.003,0.004,0.0045,0.0047, | |
bef31448 | 1250 | 0.005,0.0053,0.0055, |
1251 | 0.006,0.0063,0.0065,0.007,0.0073,0.0075,0.0077, | |
1252 | 0.008,0.0083,0.0085,0.0087,0.009,0.0095,0.0097, | |
627b6db6 | 1253 | 0.01,0.0105,0.011,0.0115,0.012,0.0125,0.013,0.0135,0.0140,0.0145}; |
1254 | Double_t lambdad[33] = {0.003,0.004,0.005,0.005,0.005, | |
1255 | 0.005,0.005,0.006, | |
1256 | 0.006,0.006,0.006,0.007,0.007,0.007,0.007, | |
1257 | 0.007,0.007,0.007,0.007,0.007,0.007,0.007, | |
1258 | 0.008,0.008,0.008,0.008,0.008,0.008,0.008,0.008,0.008,0.008}; | |
bef31448 | 1259 | |
627b6db6 | 1260 | if(fNloop!=33){ |
1261 | fNloop = 33; | |
13918578 | 1262 | } |
627b6db6 | 1263 | |
1264 | ||
13918578 | 1265 | fPhiWin = new Double_t[fNloop]; |
1266 | fLambdaWin = new Double_t[fNloop]; | |
e340bb86 | 1267 | |
e340bb86 | 1268 | Double_t factor=AliITSReconstructor::GetRecoParam()->GetFactorSAWindowSizes(); // possibility to enlarge windows for cosmics reco with large misalignments (A.Dainese) |
2755f080 | 1269 | |
1270 | for(Int_t k=0;k<fNloop;k++){ | |
e340bb86 | 1271 | fPhiWin[k]=phid[k]*factor; |
1272 | fLambdaWin[k]=lambdad[k]*factor; | |
13918578 | 1273 | } |
1274 | ||
1275 | } | |
1276 | ||
1277 | } | |
7e5bf5af | 1278 | //_______________________________________________________________________ |
cc088660 | 1279 | void AliITStrackerSA::GetCoorAngles(AliITSRecPoint* cl,Double_t &phi,Double_t &lambda, Float_t &x, Float_t &y,Float_t &z,Double_t* vertex){ |
7e5bf5af | 1280 | //Returns values of phi (azimuthal) and lambda angles for a given cluster |
cc088660 | 1281 | /* |
7e5bf5af | 1282 | Double_t rot[9]; fGeom->GetRotMatrix(module,rot); |
1283 | Int_t lay,lad,det; fGeom->GetModuleId(module,lay,lad,det); | |
1284 | Float_t tx,ty,tz; fGeom->GetTrans(lay,lad,det,tx,ty,tz); | |
1285 | ||
1286 | Double_t alpha=TMath::ATan2(rot[1],rot[0])+TMath::Pi(); | |
1287 | Double_t phi1=TMath::Pi()/2+alpha; | |
1288 | if (lay==1) phi1+=TMath::Pi(); | |
1289 | ||
1290 | Float_t cp=TMath::Cos(phi1), sp=TMath::Sin(phi1); | |
1291 | Float_t r=tx*cp+ty*sp; | |
1292 | ||
cc088660 | 1293 | xyz= r*cp - cl->GetY()*sp; |
7e5bf5af | 1294 | y= r*sp + cl->GetY()*cp; |
1295 | z=cl->GetZ(); | |
cc088660 | 1296 | */ |
1297 | Float_t xyz[3]; | |
1298 | cl->GetGlobalXYZ(xyz); | |
1299 | x=xyz[0]; | |
1300 | y=xyz[1]; | |
1301 | z=xyz[2]; | |
1302 | ||
1966f03c | 1303 | phi=TMath::ATan2(y-vertex[1],x-vertex[0]); |
7e5bf5af | 1304 | lambda=TMath::ATan2(z-vertex[2],TMath::Sqrt((x-vertex[0])*(x-vertex[0])+(y-vertex[1])*(y-vertex[1]))); |
1305 | } | |
13918578 | 1306 | |
7e5bf5af | 1307 | //________________________________________________________________________ |
cc088660 | 1308 | void AliITStrackerSA::GetCoorErrors(AliITSRecPoint* cl,Float_t &sx,Float_t &sy, Float_t &sz){ |
7e5bf5af | 1309 | |
cc088660 | 1310 | //returns sigmax, y, z of cluster in global coordinates |
1311 | /* | |
7e5bf5af | 1312 | Double_t rot[9]; fGeom->GetRotMatrix(module,rot); |
cc088660 | 1313 | Int_t lay,lad,det; |
1314 | AliITSgeomTGeo::GetModuleId(module,lay,lad,det); | |
7e5bf5af | 1315 | |
1316 | Double_t alpha=TMath::ATan2(rot[1],rot[0])+TMath::Pi(); | |
1317 | Double_t phi=TMath::Pi()/2+alpha; | |
1318 | if (lay==1) phi+=TMath::Pi(); | |
1319 | ||
1320 | Float_t cp=TMath::Cos(phi), sp=TMath::Sin(phi); | |
cc088660 | 1321 | */ |
1322 | Float_t covm[6]; | |
1323 | cl->GetGlobalCov(covm); | |
1324 | sx=TMath::Sqrt(covm[0]); | |
1325 | sy=TMath::Sqrt(covm[3]); | |
1326 | sz=TMath::Sqrt(covm[5]); | |
1327 | /* | |
7e5bf5af | 1328 | sx = TMath::Sqrt(sp*sp*cl->GetSigmaY2()); |
1329 | sy = TMath::Sqrt(cp*cp*cl->GetSigmaY2()); | |
1330 | sz = TMath::Sqrt(cl->GetSigmaZ2()); | |
cc088660 | 1331 | */ |
7e5bf5af | 1332 | } |