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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 | |
32 | #include "AliESD.h" | |
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" |
41 | #include "AliRun.h" | |
13918578 | 42 | |
43 | ClassImp(AliITStrackerSA) | |
44 | ||
45 | //____________________________________________________________________________ | |
e399f961 | 46 | AliITStrackerSA::AliITStrackerSA():AliITStrackerMI(), |
47 | fPhiEstimate(0), | |
1966f03c | 48 | fITSStandAlone(0), |
e399f961 | 49 | fLambdac(0), |
50 | fPhic(0), | |
51 | fCoef1(0), | |
52 | fCoef2(0), | |
53 | fCoef3(0), | |
54 | fNloop(0), | |
55 | fPhiWin(0), | |
56 | fLambdaWin(0), | |
57 | fVert(0), | |
58 | fVertexer(0), | |
e399f961 | 59 | fListOfTracks(0), |
60 | fITSclusters(0), | |
61 | fSixPoints(0), | |
62 | fCluLayer(0), | |
63 | fCluCoord(0){ | |
13918578 | 64 | // Default constructor |
65 | Init(); | |
627b6db6 | 66 | |
13918578 | 67 | } |
2257f27e | 68 | //____________________________________________________________________________ |
cc088660 | 69 | AliITStrackerSA::AliITStrackerSA(const Char_t *geom):AliITStrackerMI(0), |
e399f961 | 70 | fPhiEstimate(0), |
1966f03c | 71 | fITSStandAlone(0), |
e399f961 | 72 | fLambdac(0), |
73 | fPhic(0), | |
74 | fCoef1(0), | |
75 | fCoef2(0), | |
76 | fCoef3(0), | |
77 | fNloop(0), | |
78 | fPhiWin(0), | |
79 | fLambdaWin(0), | |
80 | fVert(0), | |
81 | fVertexer(0), | |
e399f961 | 82 | fListOfTracks(0), |
83 | fITSclusters(0), | |
84 | fSixPoints(0), | |
85 | fCluLayer(0), | |
86 | fCluCoord(0) | |
2257f27e | 87 | { |
88 | // Standard constructor (Vertex is known and passed to this obj.) | |
cc088660 | 89 | if (geom) { |
90 | AliWarning("\"geom\" is actually a dummy argument !"); | |
91 | } | |
92 | ||
2257f27e | 93 | Init(); |
94 | fVert = 0; | |
627b6db6 | 95 | |
2257f27e | 96 | } |
97 | ||
13918578 | 98 | //____________________________________________________________________________ |
cc088660 | 99 | AliITStrackerSA::AliITStrackerSA(const Char_t *geom, AliESDVertex *vert):AliITStrackerMI(0), |
e399f961 | 100 | fPhiEstimate(0), |
1966f03c | 101 | fITSStandAlone(0), |
e399f961 | 102 | fLambdac(0), |
103 | fPhic(0), | |
104 | fCoef1(0), | |
105 | fCoef2(0), | |
106 | fCoef3(0), | |
107 | fNloop(0), | |
108 | fPhiWin(0), | |
109 | fLambdaWin(0), | |
110 | fVert(vert), | |
111 | fVertexer(0), | |
e399f961 | 112 | fListOfTracks(0), |
113 | fITSclusters(0), | |
114 | fSixPoints(0), | |
115 | fCluLayer(0), | |
1966f03c | 116 | fCluCoord(0) |
13918578 | 117 | { |
118 | // Standard constructor (Vertex is known and passed to this obj.) | |
cc088660 | 119 | if (geom) { |
120 | AliWarning("\"geom\" is actually a dummy argument !"); | |
121 | } | |
13918578 | 122 | Init(); |
627b6db6 | 123 | |
13918578 | 124 | } |
125 | ||
13918578 | 126 | //____________________________________________________________________________ |
cc088660 | 127 | AliITStrackerSA::AliITStrackerSA(const Char_t *geom, AliITSVertexer *vertexer):AliITStrackerMI(0), |
e399f961 | 128 | fPhiEstimate(0), |
1966f03c | 129 | fITSStandAlone(0), |
e399f961 | 130 | fLambdac(0), |
131 | fPhic(0), | |
132 | fCoef1(0), | |
133 | fCoef2(0), | |
134 | fCoef3(0), | |
135 | fNloop(0), | |
136 | fPhiWin(0), | |
137 | fLambdaWin(0), | |
138 | fVert(), | |
139 | fVertexer(vertexer), | |
e399f961 | 140 | fListOfTracks(0), |
141 | fITSclusters(0), | |
142 | fSixPoints(0), | |
143 | fCluLayer(0), | |
1966f03c | 144 | fCluCoord(0) |
13918578 | 145 | { |
146 | // Standard constructor (Vertex is unknown - vertexer is passed to this obj) | |
cc088660 | 147 | if (geom) { |
148 | AliWarning("\"geom\" is actually a dummy argument !"); | |
149 | } | |
13918578 | 150 | Init(); |
151 | fVertexer = vertexer; | |
627b6db6 | 152 | |
13918578 | 153 | } |
154 | ||
155 | //____________________________________________________________________________ | |
e399f961 | 156 | AliITStrackerSA::AliITStrackerSA(const AliITStrackerSA& tracker):AliITStrackerMI(), |
157 | fPhiEstimate(tracker.fPhiEstimate), | |
1966f03c | 158 | fITSStandAlone(tracker.fITSStandAlone), |
e399f961 | 159 | fLambdac(tracker.fLambdac), |
160 | fPhic(tracker.fPhic), | |
161 | fCoef1(tracker.fCoef1), | |
162 | fCoef2(tracker.fCoef2), | |
163 | fCoef3(tracker.fCoef3), | |
164 | fNloop(tracker.fNloop), | |
165 | fPhiWin(tracker.fPhiWin), | |
166 | fLambdaWin(tracker.fLambdaWin), | |
167 | fVert(tracker.fVert), | |
168 | fVertexer(tracker.fVertexer), | |
e399f961 | 169 | fListOfTracks(tracker.fListOfTracks), |
170 | fITSclusters(tracker.fITSclusters), | |
171 | fSixPoints(tracker.fSixPoints), | |
172 | fCluLayer(tracker.fCluLayer), | |
173 | fCluCoord(tracker.fCluCoord) { | |
13918578 | 174 | // Copy constructor |
13918578 | 175 | for(Int_t i=0;i<2;i++){ |
176 | fPoint1[i]=tracker.fPoint1[i]; | |
177 | fPoint2[i]=tracker.fPoint2[i]; | |
178 | fPoint3[i]=tracker.fPoint3[i]; | |
179 | fPointc[i]=tracker.fPointc[i]; | |
180 | } | |
13918578 | 181 | if(tracker.fVertexer && tracker.fVert){ |
d681bb2d | 182 | fVert = new AliESDVertex(*tracker.fVert); |
13918578 | 183 | } |
184 | else { | |
185 | fVert = tracker.fVert; | |
186 | } | |
cc088660 | 187 | for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){ |
7e5bf5af | 188 | fCluLayer[i] = tracker.fCluLayer[i]; |
189 | fCluCoord[i] = tracker.fCluCoord[i]; | |
190 | } | |
13918578 | 191 | } |
7d62fb64 | 192 | //______________________________________________________________________ |
e399f961 | 193 | AliITStrackerSA& AliITStrackerSA::operator=(const AliITStrackerSA& source){ |
194 | // Assignment operator. | |
195 | this->~AliITStrackerSA(); | |
196 | new(this) AliITStrackerSA(source); | |
197 | return *this; | |
198 | ||
7d62fb64 | 199 | } |
13918578 | 200 | |
201 | //____________________________________________________________________________ | |
202 | AliITStrackerSA::~AliITStrackerSA(){ | |
203 | // destructor | |
d681bb2d | 204 | // if fVertexer is not null, the AliESDVertex obj. is owned by this class |
13918578 | 205 | // and is deleted here |
206 | if(fVertexer){ | |
207 | if(fVert)delete fVert; | |
208 | } | |
209 | fVert = 0; | |
210 | fVertexer = 0; | |
7e5bf5af | 211 | |
13918578 | 212 | if(fPhiWin)delete []fPhiWin; |
213 | if(fLambdaWin)delete []fLambdaWin; | |
4e05ab9a | 214 | fListOfTracks->Delete(); |
7e5bf5af | 215 | if(fCluLayer){ |
cc088660 | 216 | for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){ |
7e5bf5af | 217 | if(fCluLayer[i]){ |
218 | fCluLayer[i]->Delete(); | |
219 | delete fCluLayer[i]; | |
220 | } | |
221 | } | |
222 | delete [] fCluLayer; | |
223 | } | |
224 | if(fCluCoord){ | |
cc088660 | 225 | for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){ |
7e5bf5af | 226 | if(fCluCoord[i]){ |
227 | fCluCoord[i]->Delete(); | |
228 | delete fCluCoord[i]; | |
229 | } | |
230 | } | |
231 | delete [] fCluCoord; | |
627b6db6 | 232 | } |
7e5bf5af | 233 | |
7e5bf5af | 234 | } |
13918578 | 235 | |
1966f03c | 236 | //____________________________________________________________________________ |
237 | Int_t AliITStrackerSA::Clusters2Tracks(AliESD *event){ | |
238 | // This method is used to find and fit the tracks. By default the corresponding | |
239 | // method in the parent class is invoked. In this way a combined tracking | |
240 | // TPC+ITS is performed. If the flag fITSStandAlone is true, the tracking | |
241 | // is done in the ITS only. In the standard reconstruction chain this option | |
242 | // can be set via AliReconstruction::SetOption("ITS","onlyITS") | |
243 | Int_t rc=0; | |
244 | if(!fITSStandAlone){ | |
245 | rc=AliITStrackerMI::Clusters2Tracks(event); | |
246 | } | |
247 | else { | |
248 | AliDebug(1,"Stand Alone flag set: doing tracking in ITS alone\n"); | |
249 | } | |
250 | if(!rc) rc=FindTracks(event); | |
251 | return rc; | |
252 | } | |
253 | ||
13918578 | 254 | //____________________________________________________________________________ |
255 | void AliITStrackerSA::Init(){ | |
256 | // Reset all data members | |
257 | fPhiEstimate=0; | |
258 | for(Int_t i=0;i<3;i++){fPoint1[i]=0;fPoint2[i]=0;fPoint3[i]=0;} | |
259 | fLambdac=0; | |
260 | fPhic=0; | |
261 | fCoef1=0; | |
262 | fCoef2=0; | |
263 | fCoef3=0; | |
264 | fPointc[0]=0; | |
265 | fPointc[1]=0; | |
266 | fVert = 0; | |
267 | fVertexer = 0; | |
13918578 | 268 | SetWindowSizes(); |
2257f27e | 269 | fITSclusters = 0; |
270 | SetSixPoints(); | |
1966f03c | 271 | SetSAFlag(kFALSE); |
4e05ab9a | 272 | fListOfTracks=new TObjArray(0,0); |
7e5bf5af | 273 | fCluLayer = 0; |
274 | fCluCoord = 0; | |
627b6db6 | 275 | } |
13918578 | 276 | //_______________________________________________________________________ |
277 | void AliITStrackerSA::ResetForFinding(){ | |
278 | // Reset data members used in all loops during track finding | |
279 | fPhiEstimate=0; | |
280 | for(Int_t i=0;i<3;i++){fPoint1[i]=0;fPoint2[i]=0;fPoint3[i]=0;} | |
281 | fLambdac=0; | |
282 | fPhic=0; | |
283 | fCoef1=0; | |
284 | fCoef2=0; | |
285 | fCoef3=0; | |
286 | fPointc[0]=0; | |
287 | fPointc[1]=0; | |
4e05ab9a | 288 | fListOfTracks->Delete(); |
13918578 | 289 | } |
bef31448 | 290 | |
7e5bf5af | 291 | |
2257f27e | 292 | |
bef31448 | 293 | //______________________________________________________________________ |
2257f27e | 294 | Int_t AliITStrackerSA::FindTracks(AliESD* event){ |
bef31448 | 295 | |
7e5bf5af | 296 | // Track finder using the ESD object |
297 | ||
2257f27e | 298 | |
7e5bf5af | 299 | //controllare numero cluster sui layer1 e 2 (morti?) |
300 | //non trova tracce...controllare.. | |
4e05ab9a | 301 | |
2257f27e | 302 | if(!fITSclusters){ |
303 | Fatal("FindTracks","ITS cluster tree is not accessed - Abort!!!\n Please use method SetClusterTree to pass the pointer to the tree\n"); | |
304 | return -1; | |
bef31448 | 305 | } |
7e5bf5af | 306 | |
307 | ||
308 | //Reads event and mark clusters of traks already found, with flag kITSin | |
309 | Int_t nentr=event->GetNumberOfTracks(); | |
310 | while (nentr--) { | |
311 | AliESDtrack *track=event->GetTrack(nentr); | |
312 | if (track->GetStatus()&AliESDtrack::kITSin==AliESDtrack::kITSin){ | |
ef7253ac | 313 | Int_t idx[12]; |
7e5bf5af | 314 | Int_t ncl = track->GetITSclusters(idx); |
315 | for(Int_t k=0;k<ncl;k++){ | |
00a7cc50 | 316 | AliITSRecPoint* cll = (AliITSRecPoint*)GetCluster(idx[k]); |
7e5bf5af | 317 | cll->SetBit(kSAflag); |
318 | } | |
319 | } | |
320 | } | |
321 | ||
322 | Double_t primaryVertex[3]; | |
323 | event->GetVertex()->GetXYZ(primaryVertex); | |
324 | //Creates TClonesArray with clusters for each layer. The clusters already used | |
325 | //by AliITStrackerMI are not considered | |
326 | ||
327 | Int_t nclusters[6]={0,0,0,0,0,0}; | |
328 | Int_t dmar[6]={0,0,0,0,0,0}; | |
cc088660 | 329 | fCluLayer = new TClonesArray*[AliITSgeomTGeo::GetNLayers()]; |
330 | fCluCoord = new TClonesArray*[AliITSgeomTGeo::GetNLayers()]; | |
7e5bf5af | 331 | |
cc088660 | 332 | for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){ |
7e5bf5af | 333 | AliITSlayer &layer=fgLayers[i]; |
334 | for(Int_t cli=0;cli<layer.GetNumberOfClusters();cli++){ | |
00a7cc50 | 335 | AliITSRecPoint* cls = (AliITSRecPoint*)layer.GetCluster(cli); |
7e5bf5af | 336 | if(cls->TestBit(kSAflag)==kTRUE) continue; //clusters used by TPC prol. |
337 | if(cls->GetQ()==0) continue; //fake clusters dead zones | |
338 | nclusters[i]++; | |
339 | } | |
340 | dmar[i]=0; | |
00a7cc50 | 341 | fCluLayer[i] = new TClonesArray("AliITSRecPoint",nclusters[i]); |
7e5bf5af | 342 | fCluCoord[i] = new TClonesArray("AliITSclusterTable",nclusters[i]); |
343 | } | |
344 | ||
345 | ||
cc088660 | 346 | Int_t * firstmod = new Int_t[AliITSgeomTGeo::GetNLayers()]; |
347 | for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){ | |
348 | firstmod[i]=AliITSgeomTGeo::GetModuleIndex(i+1,1,1); | |
7e5bf5af | 349 | } |
350 | ||
cc088660 | 351 | for(Int_t ilay=0;ilay<AliITSgeomTGeo::GetNLayers();ilay++){ |
7e5bf5af | 352 | TClonesArray &clulay = *fCluLayer[ilay]; |
353 | TClonesArray &clucoo = *fCluCoord[ilay]; | |
354 | AliITSlayer &layer=fgLayers[ilay]; | |
355 | for(Int_t cli=0;cli<layer.GetNumberOfClusters();cli++){ | |
00a7cc50 | 356 | AliITSRecPoint* cls = (AliITSRecPoint*)layer.GetCluster(cli); |
7e5bf5af | 357 | if(cls->TestBit(kSAflag)==kTRUE) continue; |
358 | if(cls->GetQ()==0) continue; | |
359 | Double_t phi=0;Double_t lambda=0; | |
360 | Float_t x=0;Float_t y=0;Float_t z=0; | |
361 | Float_t sx=0;Float_t sy=0;Float_t sz=0; | |
cc088660 | 362 | GetCoorAngles(cls,phi,lambda,x,y,z,primaryVertex); |
363 | GetCoorErrors(cls,sx,sy,sz); | |
00a7cc50 | 364 | new (clulay[dmar[ilay]]) AliITSRecPoint(*cls); |
7e5bf5af | 365 | new (clucoo[dmar[ilay]]) AliITSclusterTable(x,y,z,sx,sy,sz,phi,lambda,cli); |
366 | dmar[ilay]++; | |
367 | } | |
368 | } | |
369 | ||
2257f27e | 370 | |
371 | //Get primary vertex | |
7e5bf5af | 372 | |
373 | Int_t ntrack=0; | |
374 | //loop on the different windows | |
375 | for(Int_t nloop=0;nloop<fNloop;nloop++){ | |
376 | for(Int_t ncl=0;ncl<fCluLayer[0]->GetEntries();ncl++){ //loop starting from layer 0 | |
377 | ||
378 | ResetForFinding(); | |
379 | Int_t pflag=0; | |
380 | ||
00a7cc50 | 381 | AliITSRecPoint* cl = (AliITSRecPoint*)fCluLayer[0]->At(ncl); |
7e5bf5af | 382 | |
383 | if(!cl) continue; | |
384 | ||
385 | ||
386 | if (cl->GetQ()<=0) continue; | |
387 | ||
388 | AliITSclusterTable* arr = (AliITSclusterTable*)GetClusterCoord(0,ncl); | |
389 | fPhic = arr->GetPhi(); | |
390 | fLambdac = arr->GetLambda(); | |
391 | if (TMath::Abs(fLambdac)>0.26*TMath::Pi()) continue; | |
392 | fPhiEstimate = fPhic; | |
393 | AliITStrackSA* trs = new AliITStrackSA(); | |
394 | fPoint1[0]=primaryVertex[0]; | |
395 | fPoint1[1]=primaryVertex[1]; | |
396 | ||
397 | ||
398 | fPoint2[0]=arr->GetX(); | |
399 | fPoint2[1]=arr->GetY(); | |
cc088660 | 400 | Int_t * nn = new Int_t[AliITSgeomTGeo::GetNLayers()];//counter for clusters on each layer |
401 | for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){ nn[i]=0;} | |
7e5bf5af | 402 | nn[0] = SearchClusters(0,fPhiWin[nloop],fLambdaWin[nloop],trs,primaryVertex[2],pflag); |
403 | ||
404 | nn[1] = SearchClusters(1,fPhiWin[nloop],fLambdaWin[nloop],trs,primaryVertex[2],pflag); | |
bef31448 | 405 | if(nn[1]>0){ |
406 | pflag=1; | |
407 | fPoint3[0] = fPointc[0]; | |
408 | fPoint3[1] = fPointc[1]; | |
409 | } | |
cfe729e0 | 410 | nn[2] = SearchClusters(2,fPhiWin[nloop],fLambdaWin[nloop],trs,primaryVertex[2],pflag); |
bef31448 | 411 | if(nn[1]==0 && nn[2]==0) pflag=0; |
412 | if(nn[2]!=0 && nn[1]!=0){ pflag=1; UpdatePoints();} | |
413 | if(nn[2]!=0 && nn[1]==0){ | |
414 | pflag=1; | |
415 | fPoint3[0]=fPointc[0]; | |
416 | fPoint3[1]=fPointc[1]; | |
417 | } | |
13918578 | 418 | |
cfe729e0 | 419 | nn[3] = SearchClusters(3,fPhiWin[nloop],fLambdaWin[nloop],trs,primaryVertex[2],pflag); |
bef31448 | 420 | pflag=1; |
421 | if(nn[3]!=0) UpdatePoints(); | |
cfe729e0 | 422 | nn[4] = SearchClusters(4,fPhiWin[nloop],fLambdaWin[nloop],trs,primaryVertex[2],pflag); |
bef31448 | 423 | pflag=1; |
424 | if(nn[4]!=0) UpdatePoints(); | |
cfe729e0 | 425 | nn[5] = SearchClusters(5,fPhiWin[nloop],fLambdaWin[nloop],trs,primaryVertex[2],pflag); |
bef31448 | 426 | |
427 | ||
428 | Int_t layOK=0; | |
429 | Int_t numberofpoints; | |
2257f27e | 430 | if(fSixPoints) numberofpoints=6; //check of the candidate track |
bef31448 | 431 | else numberofpoints=5; //if track is good (with the required number |
cc088660 | 432 | for(Int_t nnp=0;nnp<AliITSgeomTGeo::GetNLayers();nnp++){ //of points) it is written on file |
bef31448 | 433 | if(nn[nnp]!=0) layOK+=1; |
434 | } | |
435 | if(layOK>=numberofpoints){ | |
7e5bf5af | 436 | |
437 | AliITStrackV2* tr2 = FitTrack(trs,primaryVertex); | |
bef31448 | 438 | |
7e5bf5af | 439 | if(tr2==0) continue; |
440 | ||
bef31448 | 441 | AliESDtrack outtrack; |
442 | outtrack.UpdateTrackParams(tr2,AliESDtrack::kITSin); | |
443 | event->AddTrack(&outtrack); | |
bef31448 | 444 | ntrack++; |
bef31448 | 445 | } |
7e5bf5af | 446 | |
447 | ||
bef31448 | 448 | delete trs; |
2257f27e | 449 | delete[] nn; |
627b6db6 | 450 | |
7e5bf5af | 451 | }//end loop on clusters of layer1 |
627b6db6 | 452 | |
7e5bf5af | 453 | //end loop2 |
454 | } | |
bef31448 | 455 | |
7e5bf5af | 456 | //if 5/6 points are required, second loop starting |
457 | //from second layer, to find tracks with point of | |
458 | //layer 1 missing | |
bef31448 | 459 | |
7e5bf5af | 460 | if(!fSixPoints){ |
461 | // counter for clusters on each layer | |
cc088660 | 462 | Int_t * nn = new Int_t[AliITSgeomTGeo::GetNLayers()-1]; |
7e5bf5af | 463 | for(Int_t nloop=0;nloop<fNloop;nloop++){ |
464 | Int_t ncl2=fCluLayer[1]->GetEntries(); | |
465 | while(ncl2--){ //loop starting from layer 2 | |
466 | ResetForFinding(); | |
467 | Int_t pflag=0; | |
00a7cc50 | 468 | AliITSRecPoint* cl = (AliITSRecPoint*)fCluLayer[1]->At(ncl2); |
7e5bf5af | 469 | |
470 | if(!cl) continue; | |
471 | AliITSclusterTable* arr = (AliITSclusterTable*)GetClusterCoord(1,ncl2); | |
472 | fPhic = arr->GetPhi(); | |
473 | fLambdac = arr->GetLambda(); | |
474 | fPhiEstimate = fPhic; | |
475 | ||
476 | AliITStrackSA* trs = new AliITStrackSA(); | |
477 | fPoint1[0]=primaryVertex[0]; | |
478 | fPoint1[1]=primaryVertex[1]; | |
479 | ||
480 | fPoint2[0]=arr->GetX(); | |
481 | fPoint2[1]=arr->GetY(); | |
cc088660 | 482 | for(Int_t kk=0;kk<AliITSgeomTGeo::GetNLayers()-1;kk++)nn[kk] = 0; |
7e5bf5af | 483 | nn[0] = SearchClusters(1,fPhiWin[nloop],fLambdaWin[nloop], |
484 | trs,primaryVertex[2],pflag); | |
485 | nn[1] = SearchClusters(2,fPhiWin[nloop],fLambdaWin[nloop], | |
486 | trs,primaryVertex[2],pflag); | |
487 | if(nn[1]!=0){ | |
488 | pflag=1; | |
489 | fPoint3[0]=fPointc[0]; | |
490 | fPoint3[1]=fPointc[1]; | |
491 | } | |
492 | nn[2]= SearchClusters(3,fPhiWin[nloop],fLambdaWin[nloop], | |
493 | trs,primaryVertex[2],pflag); | |
494 | if(nn[2]!=0){ | |
495 | pflag=1; | |
496 | UpdatePoints(); | |
497 | } | |
498 | nn[3]= SearchClusters(4,fPhiWin[nloop],fLambdaWin[nloop], | |
499 | trs,primaryVertex[2],pflag); | |
500 | if(nn[3]!=0){ | |
501 | pflag=1; | |
502 | UpdatePoints(); | |
503 | } | |
504 | nn[4]=SearchClusters(5,fPhiWin[nloop],fLambdaWin[nloop], | |
505 | trs,primaryVertex[2],pflag); | |
506 | ||
507 | Int_t fl=0; | |
cc088660 | 508 | for(Int_t nnp=0;nnp<AliITSgeomTGeo::GetNLayers()-1;nnp++){ |
7e5bf5af | 509 | if(nn[nnp]!=0) fl+=1; |
510 | } | |
511 | if(fl>=5){ // 5/6 | |
512 | AliITStrackV2* tr2 = FitTrack(trs,primaryVertex); | |
513 | if(tr2==0){ | |
514 | continue; | |
515 | } | |
516 | ||
517 | AliESDtrack outtrack; | |
518 | outtrack.UpdateTrackParams(tr2,AliESDtrack::kITSin); | |
519 | event->AddTrack(&outtrack); | |
520 | ntrack++; | |
521 | ||
522 | } | |
523 | ||
524 | ||
bef31448 | 525 | delete trs; |
526 | }//end loop on clusters of layer2 | |
7e5bf5af | 527 | } |
528 | ||
bef31448 | 529 | delete [] nn; |
530 | } //end opt="5/6" | |
7e5bf5af | 531 | |
bef31448 | 532 | delete [] firstmod; |
bef31448 | 533 | Info("FindTracks","Number of found tracks: %d",event->GetNumberOfTracks()); |
2257f27e | 534 | return 0; |
bef31448 | 535 | |
536 | } | |
7e5bf5af | 537 | |
538 | ||
539 | ||
2257f27e | 540 | |
541 | ||
13918578 | 542 | //________________________________________________________________________ |
543 | ||
7e5bf5af | 544 | AliITStrackV2* AliITStrackerSA::FitTrack(AliITStrackSA* tr,Double_t *primaryVertex){ |
13918578 | 545 | //fit of the found track |
546 | ||
13918578 | 547 | |
cc088660 | 548 | Int_t * firstmod = new Int_t[AliITSgeomTGeo::GetNLayers()]; |
549 | for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){ | |
550 | firstmod[i]=AliITSgeomTGeo::GetModuleIndex(i+1,1,1); | |
13918578 | 551 | } |
15dd636f | 552 | |
13918578 | 553 | Int_t nclusters = tr->GetNumberOfClustersSA(); |
cc088660 | 554 | TObjArray** listlayer = new TObjArray*[AliITSgeomTGeo::GetNLayers()]; |
555 | for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){ | |
13918578 | 556 | listlayer[i] = new TObjArray(0,0); |
557 | } | |
558 | ||
559 | TArrayI clind0(20); | |
560 | TArrayI clind1(20); | |
561 | TArrayI clind2(20); | |
562 | TArrayI clind3(20); | |
563 | TArrayI clind4(20); | |
564 | TArrayI clind5(20); | |
565 | ||
7e5bf5af | 566 | TArrayI mark0(20); |
567 | TArrayI mark1(20); | |
568 | TArrayI mark2(20); | |
569 | TArrayI mark3(20); | |
570 | TArrayI mark4(20); | |
571 | TArrayI mark5(20); | |
572 | ||
573 | ||
cc088660 | 574 | Int_t * nnn = new Int_t[AliITSgeomTGeo::GetNLayers()]; |
575 | Int_t * kkk = new Int_t[AliITSgeomTGeo::GetNLayers()]; | |
576 | for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++) {nnn[i]=0;kkk[i]=0;} | |
13918578 | 577 | |
578 | for(Int_t ncl=0;ncl<nclusters;ncl++){ | |
7e5bf5af | 579 | Int_t index = tr->GetClusterIndexSA(ncl); |
00a7cc50 | 580 | AliITSRecPoint* cl = (AliITSRecPoint*)GetCluster(index); |
627b6db6 | 581 | if(cl->TestBit(kSAflag)==kTRUE) cl->ResetBit(kSAflag); |
13918578 | 582 | Int_t lay = (index & 0xf0000000) >> 28; |
583 | if(lay==0) { listlayer[0]->AddLast(cl); clind0[nnn[0]]=index;nnn[0]++;} | |
584 | if(lay==1) { listlayer[1]->AddLast(cl); clind1[nnn[1]]=index;nnn[1]++;} | |
585 | if(lay==2) { listlayer[2]->AddLast(cl); clind2[nnn[2]]=index;nnn[2]++;} | |
586 | if(lay==3) { listlayer[3]->AddLast(cl); clind3[nnn[3]]=index;nnn[3]++;} | |
587 | if(lay==4) { listlayer[4]->AddLast(cl); clind4[nnn[4]]=index;nnn[4]++;} | |
588 | if(lay==5) { listlayer[5]->AddLast(cl); clind5[nnn[5]]=index;nnn[5]++;} | |
589 | } | |
037efb75 | 590 | delete [] nnn; |
13918578 | 591 | |
cc088660 | 592 | for(Int_t nlay=0;nlay<AliITSgeomTGeo::GetNLayers();nlay++){ |
7e5bf5af | 593 | for(Int_t ncl=0;ncl<tr->GetNumberOfMarked(nlay);ncl++){ |
594 | Int_t mark = tr->GetClusterMark(nlay,ncl); | |
595 | if(nlay==0) { mark0[kkk[0]]=mark;kkk[0]++;} | |
596 | if(nlay==1) { mark1[kkk[1]]=mark;kkk[1]++;} | |
597 | if(nlay==2) { mark2[kkk[2]]=mark;kkk[2]++;} | |
598 | if(nlay==3) { mark3[kkk[3]]=mark;kkk[3]++;} | |
599 | if(nlay==4) { mark4[kkk[4]]=mark;kkk[4]++;} | |
600 | if(nlay==5) { mark5[kkk[5]]=mark;kkk[5]++;} | |
601 | ||
602 | } | |
603 | } | |
604 | ||
605 | delete [] kkk; | |
606 | ||
13918578 | 607 | |
cc088660 | 608 | Int_t * end = new Int_t[AliITSgeomTGeo::GetNLayers()]; |
609 | for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){ | |
13918578 | 610 | if(listlayer[i]->GetEntries()==0) end[i]=1; |
611 | else end[i]=listlayer[i]->GetEntries(); | |
612 | } | |
613 | ||
7e5bf5af | 614 | TClonesArray* listSA = new TClonesArray("AliITStrackSA"); |
615 | TClonesArray &tri = *listSA; | |
616 | Int_t nlist=0; | |
617 | ||
618 | if(end[0]==0) end[0]=1; //for tracks with cluster on layer 0 missing | |
13918578 | 619 | for(Int_t l1=0;l1<end[0];l1++){//loop on layer 1 |
00a7cc50 | 620 | AliITSRecPoint* cl0 = (AliITSRecPoint*)listlayer[0]->At(l1); |
13918578 | 621 | Double_t x1,y1,z1,sx1,sy1,sz1; |
622 | Double_t x2,y2,z2,sx2,sy2,sz2; | |
00a7cc50 | 623 | AliITSRecPoint* p1=0; |
624 | AliITSRecPoint* p2=0; | |
bef31448 | 625 | Int_t index1=clind0[l1]; |
626 | Int_t index2=0; | |
7e5bf5af | 627 | Int_t mrk1 = mark0[l1]; |
628 | Int_t mrk2 = 0; | |
629 | Int_t lay1=0; | |
630 | Int_t lay2=1; | |
631 | Int_t module1=-1; | |
13918578 | 632 | for(Int_t l2=0;l2<end[1];l2++){//loop on layer 2 |
00a7cc50 | 633 | AliITSRecPoint* cl1 = (AliITSRecPoint*)listlayer[1]->At(l2); |
bef31448 | 634 | index2=clind1[l2]; |
7e5bf5af | 635 | mrk2 = mark1[l2]; |
13918578 | 636 | for(Int_t l3=0;l3<end[2];l3++){ //loop on layer 3 |
00a7cc50 | 637 | AliITSRecPoint* cl2 = (AliITSRecPoint*)listlayer[2]->At(l3); |
bef31448 | 638 | |
639 | if(cl0==0 && cl1!=0) { | |
7e5bf5af | 640 | p2 = cl2;index1=clind2[l3];mrk1=mark2[l3];lay1=2; |
bef31448 | 641 | p1=cl1; |
7e5bf5af | 642 | module1 = p1->GetDetectorIndex()+firstmod[1]; |
bef31448 | 643 | } |
644 | if(cl0!=0 && cl1==0){ | |
645 | p1=cl0; | |
7e5bf5af | 646 | p2=cl2;index2=clind2[l3];mrk2=mark2[l3];lay2=2; |
647 | module1 = p1->GetDetectorIndex()+firstmod[0]; | |
bef31448 | 648 | } |
649 | if(cl0!=0 && cl1!=0){ | |
650 | p1=cl0; | |
651 | p2=cl1; | |
7e5bf5af | 652 | module1 = p1->GetDetectorIndex()+firstmod[0]; |
bef31448 | 653 | } |
7e5bf5af | 654 | |
655 | Int_t cln1=mrk1; | |
656 | Int_t cln2=mrk2; | |
657 | AliITSclusterTable* arr = (AliITSclusterTable*)GetClusterCoord(lay1,cln1); | |
658 | AliITSclusterTable* arr1= (AliITSclusterTable*)GetClusterCoord(lay2,cln2); | |
659 | x1 = arr->GetX(); | |
660 | x2 = arr1->GetX(); | |
661 | y1 = arr->GetY(); | |
662 | y2 = arr1->GetY(); | |
663 | z1 = arr->GetZ(); | |
664 | z2 = arr1->GetZ(); | |
665 | sx1 = arr->GetSx(); | |
666 | sx2 = arr1->GetSx(); | |
667 | sy1 = arr->GetSy(); | |
668 | sy2 = arr1->GetSy(); | |
669 | sz1 = arr->GetSz(); | |
670 | sz2 = arr1->GetSz(); | |
671 | ||
13918578 | 672 | Int_t layer,ladder,detector; |
cc088660 | 673 | AliITSgeomTGeo::GetModuleId(module1,layer,ladder,detector); |
bef31448 | 674 | Float_t yclu1 = p1->GetY(); |
675 | Float_t zclu1 = p1->GetZ(); | |
676 | Double_t cv=Curvature(primaryVertex[0],primaryVertex[1],x1,y1,x2,y2); | |
7e5bf5af | 677 | |
678 | Double_t tgl2 = (z2-z1)/TMath::Sqrt((x2-x1)*(x2-x1)+(y2-y1)*(y2-y1)); | |
679 | Double_t phi2 = TMath::ATan2((y2-y1),(x2-x1)); | |
680 | ||
bef31448 | 681 | for(Int_t l4=0;l4<end[3];l4++){ //loop on layer 4 |
00a7cc50 | 682 | AliITSRecPoint* cl3 = (AliITSRecPoint*)listlayer[3]->At(l4); |
bef31448 | 683 | for(Int_t l5=0;l5<end[4];l5++){ //loop on layer 5 |
00a7cc50 | 684 | AliITSRecPoint* cl4 = (AliITSRecPoint*)listlayer[4]->At(l5); |
bef31448 | 685 | for(Int_t l6=0;l6<end[5];l6++){ //loop on layer 6 |
00a7cc50 | 686 | AliITSRecPoint* cl5 = (AliITSRecPoint*)listlayer[5]->At(l6); |
cc088660 | 687 | AliITStrackSA* trac = new AliITStrackSA(layer,ladder,detector,yclu1,zclu1,phi2,tgl2,cv,1); |
bef31448 | 688 | |
7e5bf5af | 689 | if(cl5!=0) { |
690 | trac->AddClusterV2(5,(clind5[l6] & 0x0fffffff)>>0); | |
691 | trac->AddClusterMark(5,mark5[l6]); | |
692 | } | |
693 | if(cl4!=0){ | |
694 | trac->AddClusterV2(4,(clind4[l5] & 0x0fffffff)>>0); | |
695 | trac->AddClusterMark(4,mark4[l5]); | |
696 | } | |
697 | if(cl3!=0){ | |
698 | trac->AddClusterV2(3,(clind3[l4] & 0x0fffffff)>>0); | |
699 | trac->AddClusterMark(3,mark3[l4]); | |
700 | } | |
701 | if(cl2!=0){ | |
702 | trac->AddClusterV2(2,(clind2[l3] & 0x0fffffff)>>0); | |
703 | trac->AddClusterMark(2,mark2[l3]); | |
704 | } | |
705 | if(cl1!=0){ | |
706 | trac->AddClusterV2(1,(clind1[l2] & 0x0fffffff)>>0); | |
707 | trac->AddClusterMark(1,mark1[l2]); | |
708 | } | |
709 | if(cl0!=0){ | |
710 | trac->AddClusterV2(0,(clind0[l1] & 0x0fffffff)>>0); | |
711 | trac->AddClusterMark(0,mark0[l1]); | |
712 | } | |
e43c066c | 713 | //fit with Kalman filter using AliITStrackerMI::RefitAt() |
bef31448 | 714 | |
7e5bf5af | 715 | |
15dd636f | 716 | AliITStrackMI* ot = new AliITStrackSA(*trac); |
bef31448 | 717 | |
6c94f330 | 718 | ot->ResetCovariance(10.); |
bef31448 | 719 | ot->ResetClusters(); |
720 | ||
721 | if(RefitAt(49.,ot,trac)){ //fit from layer 1 to layer 6 | |
15dd636f | 722 | AliITStrackMI *otrack2 = new AliITStrackMI(*ot); |
6c94f330 | 723 | otrack2->ResetCovariance(10.); |
bef31448 | 724 | otrack2->ResetClusters(); |
725 | //fit from layer 6 to layer 1 | |
73f446a0 | 726 | if(RefitAt(3.7,otrack2,ot)) { |
727 | fListOfTracks->AddLast(otrack2); | |
7e5bf5af | 728 | new (tri[nlist]) AliITStrackSA(*trac); |
729 | nlist++; | |
73f446a0 | 730 | } else { |
731 | delete otrack2; | |
732 | } | |
bef31448 | 733 | |
734 | } | |
735 | ||
736 | delete ot; | |
737 | delete trac; | |
738 | }//end loop layer 6 | |
739 | }//end loop layer 5 | |
740 | }//end loop layer 4 | |
741 | ||
13918578 | 742 | }//end loop layer 3 |
bef31448 | 743 | }//end loop layer 2 |
13918578 | 744 | }//end loop layer 1 |
745 | ||
037efb75 | 746 | delete [] end; |
747 | ||
7e5bf5af | 748 | |
749 | ||
4e05ab9a | 750 | Int_t dim=fListOfTracks->GetEntries(); |
13918578 | 751 | if(dim==0){ |
cc088660 | 752 | for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){ |
13918578 | 753 | delete listlayer[i]; |
754 | } | |
c09cece6 | 755 | delete [] listlayer; |
00a7cc50 | 756 | listSA->Delete(); |
757 | delete listSA; | |
73f446a0 | 758 | delete [] firstmod; |
13918578 | 759 | return 0; |
760 | } | |
761 | ||
7e5bf5af | 762 | Int_t lowchi2 = FindTrackLowChiSquare(fListOfTracks,dim); |
763 | AliITStrackV2* otrack =(AliITStrackV2*)fListOfTracks->At(lowchi2); | |
764 | AliITStrackSA* trsa = (AliITStrackSA*)listSA->At(lowchi2); | |
765 | ||
73f446a0 | 766 | if(otrack==0) { |
cc088660 | 767 | for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){ |
73f446a0 | 768 | delete listlayer[i]; |
769 | } | |
c09cece6 | 770 | delete [] listlayer; |
00a7cc50 | 771 | listSA->Delete(); |
772 | delete listSA; | |
73f446a0 | 773 | delete [] firstmod; |
774 | return 0; | |
775 | } | |
cc088660 | 776 | Int_t * indexc = new Int_t[AliITSgeomTGeo::GetNLayers()]; |
777 | for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++) indexc[i]=0; | |
13918578 | 778 | for(Int_t nind=0;nind<otrack->GetNumberOfClusters();nind++){ |
779 | indexc[nind] = otrack->GetClusterIndex(nind); | |
780 | } | |
00a7cc50 | 781 | AliITSRecPoint* cl0 = (AliITSRecPoint*)GetCluster(indexc[0]); |
782 | AliITSRecPoint* cl1 = (AliITSRecPoint*)GetCluster(indexc[1]); | |
783 | AliITSRecPoint* cl2 = (AliITSRecPoint*)GetCluster(indexc[2]); | |
784 | AliITSRecPoint* cl3 = (AliITSRecPoint*)GetCluster(indexc[3]); | |
785 | AliITSRecPoint* cl4 = (AliITSRecPoint*)GetCluster(indexc[4]); | |
13918578 | 786 | Int_t labl[3]={-1,-1,-1}; |
cc088660 | 787 | if(otrack->GetNumberOfClusters()==AliITSgeomTGeo::GetNLayers()){ |
00a7cc50 | 788 | AliITSRecPoint* cl5 = (AliITSRecPoint*)GetCluster(indexc[5]); |
13918578 | 789 | labl[0]=cl5->GetLabel(0); |
790 | labl[1]=cl5->GetLabel(1); | |
791 | labl[2]=cl5->GetLabel(2); | |
792 | } | |
037efb75 | 793 | delete [] indexc; |
cc088660 | 794 | if(otrack->GetNumberOfClusters()==(AliITSgeomTGeo::GetNLayers()-1)){ |
13918578 | 795 | labl[0]=-1; |
796 | labl[1]=-1; | |
797 | labl[2]=-1; | |
798 | } | |
799 | Int_t numberofpoints; | |
2257f27e | 800 | if(fSixPoints) numberofpoints=6; |
13918578 | 801 | else numberofpoints=5; |
e43c066c | 802 | CookLabel(otrack,0.); //MI change - to see fake ratio |
13918578 | 803 | Int_t label = Label(cl0->GetLabel(0),cl1->GetLabel(0), |
bef31448 | 804 | cl2->GetLabel(0),cl3->GetLabel(0), |
805 | cl4->GetLabel(0),labl[0], | |
806 | cl0->GetLabel(1),cl1->GetLabel(1), | |
807 | cl2->GetLabel(1),cl3->GetLabel(1), | |
808 | cl4->GetLabel(1),labl[1], | |
809 | cl0->GetLabel(2),cl1->GetLabel(2), | |
810 | cl2->GetLabel(2),cl3->GetLabel(2), | |
811 | cl4->GetLabel(2),labl[2],numberofpoints); | |
13918578 | 812 | |
813 | otrack->SetLabel(label); | |
7e5bf5af | 814 | //remove clusters of found track |
815 | ||
cc088660 | 816 | for(Int_t nlay=0;nlay<AliITSgeomTGeo::GetNLayers();nlay++){ |
7e5bf5af | 817 | for(Int_t cln=0;cln<trsa->GetNumberOfMarked(nlay);cln++){ |
818 | Int_t index = trsa->GetClusterMark(nlay,cln); | |
819 | fCluLayer[nlay]->RemoveAt(index); | |
820 | RemoveClusterCoord(nlay,index); | |
821 | fCluLayer[nlay]->Compress(); | |
822 | } | |
823 | } | |
824 | listSA->Delete(); | |
825 | delete listSA; | |
826 | ||
cc088660 | 827 | for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){ |
13918578 | 828 | delete listlayer[i]; |
829 | } | |
c09cece6 | 830 | delete [] listlayer; |
037efb75 | 831 | delete [] firstmod; |
13918578 | 832 | return otrack; |
833 | ||
834 | } | |
835 | ||
bef31448 | 836 | |
4e05ab9a | 837 | |
bef31448 | 838 | //_______________________________________________________ |
7e5bf5af | 839 | Int_t AliITStrackerSA::SearchClusters(Int_t layer,Double_t phiwindow,Double_t lambdawindow, AliITStrackSA* trs,Double_t /*zvertex*/,Int_t pflag){ |
13918578 | 840 | //function used to to find the clusters associated to the track |
841 | Int_t nc=0; | |
842 | AliITSlayer &lay = fgLayers[layer]; | |
7e5bf5af | 843 | Double_t r=lay.GetR(); |
844 | if(pflag==1){ | |
cfe729e0 | 845 | Float_t cx1,cx2,cy1,cy2; |
846 | FindEquation(fPoint1[0],fPoint1[1],fPoint2[0],fPoint2[1],fPoint3[0],fPoint3[1],fCoef1,fCoef2,fCoef3); | |
847 | if (FindIntersection(fCoef1,fCoef2,fCoef3,-r*r,cx1,cy1,cx2,cy2)==0) | |
848 | return 0; | |
1966f03c | 849 | Double_t fi1=TMath::ATan2(cy1-fPoint1[1],cx1-fPoint1[0]); |
850 | Double_t fi2=TMath::ATan2(cy2-fPoint1[1],cx2-fPoint1[0]); | |
cfe729e0 | 851 | fPhiEstimate=ChoosePoint(fi1,fi2,fPhic); |
852 | } | |
13918578 | 853 | |
7e5bf5af | 854 | |
855 | Int_t ncl = fCluLayer[layer]->GetEntries(); | |
856 | for (Int_t index=0; index<ncl; index++) { | |
00a7cc50 | 857 | AliITSRecPoint *c = (AliITSRecPoint*)fCluLayer[layer]->At(index); |
7e5bf5af | 858 | if (!c) continue; |
859 | if (c->GetQ()<=0) continue; | |
860 | ||
861 | AliITSclusterTable* arr = (AliITSclusterTable*)GetClusterCoord(layer,index); | |
862 | Double_t phi = arr->GetPhi(); | |
cfe729e0 | 863 | if (TMath::Abs(phi-fPhiEstimate)>phiwindow) continue; |
494fda7c | 864 | |
7e5bf5af | 865 | Double_t lambda = arr->GetLambda(); |
cfe729e0 | 866 | if (TMath::Abs(lambda-fLambdac)>lambdawindow) continue; |
867 | ||
7e5bf5af | 868 | if(trs->GetNumberOfClustersSA()==trs->GetMaxNumberOfClusters()) return 0; |
869 | if(trs->GetNumberOfMarked(layer)==trs->GetMaxNMarkedPerLayer()) return 0; | |
870 | Int_t orind = arr->GetOrInd(); | |
871 | trs->AddClusterSA(layer,orind); | |
872 | trs->AddClusterMark(layer,index); | |
873 | ||
cfe729e0 | 874 | nc++; |
875 | fLambdac=lambda; | |
876 | fPhiEstimate=phi; | |
cfe729e0 | 877 | |
7e5bf5af | 878 | fPointc[0]=arr->GetX(); |
879 | fPointc[1]=arr->GetY(); | |
880 | ||
cfe729e0 | 881 | } |
882 | return nc; | |
883 | } | |
13918578 | 884 | |
bef31448 | 885 | //________________________________________________________________ |
886 | void AliITStrackerSA::UpdatePoints(){ | |
887 | //update of points for the estimation of the curvature | |
13918578 | 888 | |
bef31448 | 889 | fPoint2[0]=fPoint3[0]; |
890 | fPoint2[1]=fPoint3[1]; | |
891 | fPoint3[0]=fPointc[0]; | |
892 | fPoint3[1]=fPointc[1]; | |
13918578 | 893 | |
894 | ||
13918578 | 895 | } |
13918578 | 896 | |
13918578 | 897 | //___________________________________________________________________ |
898 | 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){ | |
899 | ||
900 | //given (x,y) of three recpoints (in global coordinates) | |
901 | //returns the parameters a,b,c of circonference x*x + y*y +a*x + b*y +c | |
902 | ||
903 | Float_t den = (x3-x1)*(y2-y1)-(x2-x1)*(y3-y1); | |
904 | if(den==0) return 0; | |
905 | a = ((y3-y1)*(x2*x2+y2*y2-x1*x1-y1*y1)-(y2-y1)*(x3*x3+y3*y3-x1*x1-y1*y1))/den; | |
906 | b = -(x2*x2-x1*x1+y2*y2-y1*y1+a*(x2-x1))/(y2-y1); | |
907 | c = -x1*x1-y1*y1-a*x1-b*y1; | |
908 | return 1; | |
909 | } | |
910 | //__________________________________________________________________________ | |
911 | 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){ | |
912 | ||
913 | //Finds the intersection between the circonference of the track and the circonference centered in (0,0) represented by one layer | |
914 | //c2 is -rlayer*rlayer | |
915 | ||
916 | if(a1==0) return 0; | |
3a2f227d | 917 | Double_t m = c2-c1; |
918 | Double_t aA = (b1*b1)/(a1*a1)+1; | |
919 | Double_t bB = (-2*m*b1/(a1*a1)); | |
920 | Double_t cC = c2+(m*m)/(a1*a1); | |
921 | Double_t dD = bB*bB-4*aA*cC; | |
922 | if(dD<0) return 0; | |
13918578 | 923 | |
3a2f227d | 924 | y1 = (-bB+TMath::Sqrt(dD))/(2*aA); |
925 | y2 = (-bB-TMath::Sqrt(dD))/(2*aA); | |
13918578 | 926 | x1 = (c2-c1-b1*y1)/a1; |
927 | x2 = (c2-c1-b1*y2)/a1; | |
928 | ||
929 | return 1; | |
930 | } | |
931 | //____________________________________________________________________ | |
932 | Double_t AliITStrackerSA::Curvature(Double_t x1,Double_t y1,Double_t | |
933 | x2,Double_t y2,Double_t x3,Double_t y3){ | |
934 | ||
935 | //calculates the curvature of track | |
936 | Double_t den = (x3-x1)*(y2-y1)-(x2-x1)*(y3-y1); | |
937 | if(den==0) return 0; | |
938 | Double_t a = ((y3-y1)*(x2*x2+y2*y2-x1*x1-y1*y1)-(y2-y1)*(x3*x3+y3*y3-x1*x1-y1*y1))/den; | |
939 | Double_t b = -(x2*x2-x1*x1+y2*y2-y1*y1+a*(x2-x1))/(y2-y1); | |
940 | Double_t c = -x1*x1-y1*y1-a*x1-b*y1; | |
941 | Double_t xc=-a/2.; | |
942 | ||
943 | if((a*a+b*b-4*c)<0) return 0; | |
944 | Double_t rad = TMath::Sqrt(a*a+b*b-4*c)/2.; | |
945 | if(rad==0) return 0; | |
946 | ||
947 | if((x1>0 && y1>0 && x1<xc)) rad*=-1; | |
948 | if((x1<0 && y1>0 && x1<xc)) rad*=-1; | |
949 | // if((x1<0 && y1<0 && x1<xc)) rad*=-1; | |
950 | // if((x1>0 && y1<0 && x1<xc)) rad*=-1; | |
951 | ||
952 | return 1/rad; | |
953 | ||
954 | } | |
7e5bf5af | 955 | |
956 | ||
13918578 | 957 | //____________________________________________________________________ |
958 | Double_t AliITStrackerSA::ChoosePoint(Double_t p1, Double_t p2, Double_t pp){ | |
959 | ||
960 | //Returns the point closest to pp | |
961 | ||
962 | Double_t diff1 = p1-pp; | |
963 | Double_t diff2 = p2-pp; | |
964 | ||
965 | if(TMath::Abs(diff1)<TMath::Abs(diff2)) fPhiEstimate=p1; | |
966 | else fPhiEstimate=p2; | |
967 | return fPhiEstimate; | |
968 | ||
969 | } | |
970 | ||
971 | ||
972 | //_________________________________________________________________ | |
7e5bf5af | 973 | Int_t AliITStrackerSA::FindTrackLowChiSquare(TObjArray* tracklist, Int_t dim) const { |
13918578 | 974 | // returns track with lowes chi square |
975 | if(dim==1){ | |
7e5bf5af | 976 | //AliITStrackV2* trk = (AliITStrackV2*)tracklist->At(0); |
977 | //return trk; | |
978 | return 0; | |
13918578 | 979 | } |
7e5bf5af | 980 | //if(dim==0) return 0; |
037efb75 | 981 | Double_t * chi2 = new Double_t[dim]; |
982 | Int_t * index = new Int_t[dim]; | |
13918578 | 983 | for(Int_t i=0;i<dim;i++){ |
984 | AliITStrackV2* trk = (AliITStrackV2*)tracklist->At(i); | |
985 | chi2[i]=trk->GetChi2(); | |
986 | index[i]=i; | |
987 | } | |
988 | ||
989 | Int_t w=0;Double_t value; | |
990 | Int_t lp; | |
991 | while(w<dim){ | |
992 | for(Int_t j=w+1;j<dim;j++){ | |
993 | if(chi2[w]<chi2[j]){ | |
bef31448 | 994 | value=chi2[w]; |
995 | chi2[w]=chi2[j]; | |
996 | chi2[j]=value; | |
997 | lp=index[w]; | |
998 | index[w]=index[j]; | |
999 | index[j]=lp; | |
13918578 | 1000 | } |
1001 | } | |
1002 | w++; | |
1003 | } | |
1004 | ||
037efb75 | 1005 | delete [] chi2; |
1006 | delete [] index; | |
7e5bf5af | 1007 | return index[dim-1]; |
13918578 | 1008 | } |
1009 | ||
1010 | //__________________________________________________________ | |
1011 | Int_t AliITStrackerSA::FindLabel(Int_t l1, Int_t l2, Int_t l3, Int_t l4, Int_t l5, Int_t l6){ | |
1012 | ||
1013 | //function used to determine the track label | |
1014 | ||
1015 | Int_t lb[6] = {l1,l2,l3,l4,l5,l6}; | |
1016 | Int_t aa[6]={1,1,1,1,1,1}; | |
1017 | Int_t ff=0; | |
1018 | Int_t ll=0; | |
1019 | Int_t k=0;Int_t w=0;Int_t num=6; | |
1020 | if(lb[5]==-1) num=5; | |
1021 | ||
1022 | while(k<num){ | |
1023 | ||
1024 | for(Int_t i=k+1;i<num;i++){ | |
1025 | ||
1026 | if(lb[k]==lb[i] && aa[k]!=0){ | |
1027 | ||
1028 | aa[k]+=1; | |
1029 | aa[i]=0; | |
1030 | } | |
1031 | } | |
1032 | k++; | |
1033 | } | |
1034 | ||
1035 | while(w<num){ | |
1036 | ||
1037 | for(Int_t j=0;j<6;j++){ | |
1038 | if(aa[w]<aa[j]){ | |
1039 | ff=aa[w]; | |
1040 | aa[w]=aa[j]; | |
1041 | aa[j]=ff; | |
1042 | ll=lb[w]; | |
1043 | lb[w]=lb[j]; | |
1044 | lb[j]=ll; | |
1045 | } | |
1046 | } | |
1047 | w++; | |
1048 | } | |
1049 | if(num==6) return lb[5]; | |
1050 | else return lb[4]; | |
1051 | } | |
1052 | ||
1053 | //_____________________________________________________________________________ | |
1054 | 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, | |
1055 | Int_t gl12, Int_t gl13, Int_t gl14,Int_t gl15, Int_t gl16, Int_t gl17, Int_t gl18, Int_t numberofpoints){ | |
1056 | ||
1057 | ||
1058 | //function used to assign label to the found track. If track is fake, the label is negative | |
1059 | ||
1060 | Int_t lb0[6] = {gl1,gl2,gl3,gl4,gl5,gl6}; | |
1061 | Int_t lb1[6] = {gl7,gl8,gl9,gl10,gl11,gl12}; | |
1062 | Int_t lb2[6] = {gl13,gl14,gl15,gl16,gl17,gl18}; | |
1063 | Int_t ll=FindLabel(lb0[0],lb0[1],lb0[2],lb0[3],lb0[4],lb0[5]); | |
1064 | Int_t lflag=0;Int_t num=6; | |
1065 | if(lb0[5]==-1 && lb1[5]==-1 && lb2[5]==-1) num=5; | |
1066 | ||
1067 | for(Int_t i=0;i<num;i++){ | |
1068 | if(lb0[i]==ll || lb1[i]==ll || lb2[i]==ll) lflag+=1; | |
1069 | } | |
1070 | ||
1071 | if(lflag>=numberofpoints) return ll; | |
1072 | else return -ll; | |
1073 | ||
1074 | ||
1075 | } | |
1076 | ||
1077 | //_____________________________________________________________________________ | |
1078 | void AliITStrackerSA::SetWindowSizes(Int_t n, Double_t *phi, Double_t *lam){ | |
1079 | // Set sizes of the phi and lambda windows used for track finding | |
1080 | fNloop = n; | |
1081 | if(phi){ // user defined values | |
1082 | fPhiWin = new Double_t[fNloop]; | |
1083 | fLambdaWin = new Double_t[fNloop]; | |
1084 | for(Int_t k=0;k<fNloop;k++){ | |
1085 | fPhiWin[k]=phi[k]; | |
1086 | fLambdaWin[k]=lam[k]; | |
1087 | } | |
1088 | } | |
1089 | else { // default values | |
627b6db6 | 1090 | |
1091 | Double_t phid[33] = {0.002,0.003,0.004,0.0045,0.0047, | |
bef31448 | 1092 | 0.005,0.0053,0.0055, |
1093 | 0.006,0.0063,0.0065,0.007,0.0073,0.0075,0.0077, | |
1094 | 0.008,0.0083,0.0085,0.0087,0.009,0.0095,0.0097, | |
627b6db6 | 1095 | 0.01,0.0105,0.011,0.0115,0.012,0.0125,0.013,0.0135,0.0140,0.0145}; |
1096 | Double_t lambdad[33] = {0.003,0.004,0.005,0.005,0.005, | |
1097 | 0.005,0.005,0.006, | |
1098 | 0.006,0.006,0.006,0.007,0.007,0.007,0.007, | |
1099 | 0.007,0.007,0.007,0.007,0.007,0.007,0.007, | |
1100 | 0.008,0.008,0.008,0.008,0.008,0.008,0.008,0.008,0.008,0.008}; | |
bef31448 | 1101 | |
627b6db6 | 1102 | if(fNloop!=33){ |
1103 | fNloop = 33; | |
13918578 | 1104 | } |
627b6db6 | 1105 | |
1106 | ||
13918578 | 1107 | fPhiWin = new Double_t[fNloop]; |
1108 | fLambdaWin = new Double_t[fNloop]; | |
1109 | ||
1110 | for(Int_t k=0;k<fNloop;k++){ | |
1111 | fPhiWin[k]=phid[k]; | |
1112 | fLambdaWin[k]=lambdad[k]; | |
1113 | } | |
1114 | ||
1115 | } | |
1116 | ||
1117 | } | |
7e5bf5af | 1118 | //_______________________________________________________________________ |
cc088660 | 1119 | void AliITStrackerSA::GetCoorAngles(AliITSRecPoint* cl,Double_t &phi,Double_t &lambda, Float_t &x, Float_t &y,Float_t &z,Double_t* vertex){ |
7e5bf5af | 1120 | //Returns values of phi (azimuthal) and lambda angles for a given cluster |
cc088660 | 1121 | /* |
7e5bf5af | 1122 | Double_t rot[9]; fGeom->GetRotMatrix(module,rot); |
1123 | Int_t lay,lad,det; fGeom->GetModuleId(module,lay,lad,det); | |
1124 | Float_t tx,ty,tz; fGeom->GetTrans(lay,lad,det,tx,ty,tz); | |
1125 | ||
1126 | Double_t alpha=TMath::ATan2(rot[1],rot[0])+TMath::Pi(); | |
1127 | Double_t phi1=TMath::Pi()/2+alpha; | |
1128 | if (lay==1) phi1+=TMath::Pi(); | |
1129 | ||
1130 | Float_t cp=TMath::Cos(phi1), sp=TMath::Sin(phi1); | |
1131 | Float_t r=tx*cp+ty*sp; | |
1132 | ||
cc088660 | 1133 | xyz= r*cp - cl->GetY()*sp; |
7e5bf5af | 1134 | y= r*sp + cl->GetY()*cp; |
1135 | z=cl->GetZ(); | |
cc088660 | 1136 | */ |
1137 | Float_t xyz[3]; | |
1138 | cl->GetGlobalXYZ(xyz); | |
1139 | x=xyz[0]; | |
1140 | y=xyz[1]; | |
1141 | z=xyz[2]; | |
1142 | ||
1966f03c | 1143 | phi=TMath::ATan2(y-vertex[1],x-vertex[0]); |
7e5bf5af | 1144 | lambda=TMath::ATan2(z-vertex[2],TMath::Sqrt((x-vertex[0])*(x-vertex[0])+(y-vertex[1])*(y-vertex[1]))); |
1145 | } | |
13918578 | 1146 | |
7e5bf5af | 1147 | //________________________________________________________________________ |
cc088660 | 1148 | void AliITStrackerSA::GetCoorErrors(AliITSRecPoint* cl,Float_t &sx,Float_t &sy, Float_t &sz){ |
7e5bf5af | 1149 | |
cc088660 | 1150 | //returns sigmax, y, z of cluster in global coordinates |
1151 | /* | |
7e5bf5af | 1152 | Double_t rot[9]; fGeom->GetRotMatrix(module,rot); |
cc088660 | 1153 | Int_t lay,lad,det; |
1154 | AliITSgeomTGeo::GetModuleId(module,lay,lad,det); | |
7e5bf5af | 1155 | |
1156 | Double_t alpha=TMath::ATan2(rot[1],rot[0])+TMath::Pi(); | |
1157 | Double_t phi=TMath::Pi()/2+alpha; | |
1158 | if (lay==1) phi+=TMath::Pi(); | |
1159 | ||
1160 | Float_t cp=TMath::Cos(phi), sp=TMath::Sin(phi); | |
cc088660 | 1161 | */ |
1162 | Float_t covm[6]; | |
1163 | cl->GetGlobalCov(covm); | |
1164 | sx=TMath::Sqrt(covm[0]); | |
1165 | sy=TMath::Sqrt(covm[3]); | |
1166 | sz=TMath::Sqrt(covm[5]); | |
1167 | /* | |
7e5bf5af | 1168 | sx = TMath::Sqrt(sp*sp*cl->GetSigmaY2()); |
1169 | sy = TMath::Sqrt(cp*cp*cl->GetSigmaY2()); | |
1170 | sz = TMath::Sqrt(cl->GetSigmaZ2()); | |
cc088660 | 1171 | */ |
7e5bf5af | 1172 | } |
cc088660 | 1173 | |
1174 |