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