Fix for transient fSDigits, AliITSRawStream classes adapted to changed AliRawReader...
[u/mrichter/AliRoot.git] / ITS / AliITSclustererV2.cxx
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7f4044f0 1//-------------------------------------------------------------------------
2// Implementation of the ITS clusterer V2 class
3//
4// Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch
5//-------------------------------------------------------------------------
6//uncomment the line below for running with V1 cluster finder classes
7//#define V1
8
9#include "AliRun.h"
10
11#include "AliITSclustererV2.h"
12#include "AliITSclusterV2.h"
7941072e 13#include "AliRawReader.h"
c391f9d9 14#include "AliITSRawStreamSPD.h"
15#include "AliITSRawStreamSDD.h"
16#include "AliITSRawStreamSSD.h"
7f4044f0 17
7f4044f0 18#include <TFile.h>
19#include <TTree.h>
20#include <TClonesArray.h>
21#include "AliITSgeom.h"
22#include "AliITSdigit.h"
23
24ClassImp(AliITSclustererV2)
25
26extern AliRun *gAlice;
27
28AliITSclustererV2::AliITSclustererV2(const AliITSgeom *geom) {
29 //------------------------------------------------------------
30 // Standard constructor
31 //------------------------------------------------------------
32 AliITSgeom *g=(AliITSgeom*)geom;
33
34 fEvent=0;
35 fI=0;
36
37 Int_t mmax=geom->GetIndexMax();
c630aafd 38 if (mmax>2200) {
39 Error("AliITSclustererV2","Too many ITS subdetectors !");
40 exit(1);
41 }
7f4044f0 42 Int_t m;
43 for (m=0; m<mmax; m++) {
44 Int_t lay,lad,det; g->GetModuleId(m,lay,lad,det);
45 Float_t x,y,z; g->GetTrans(lay,lad,det,x,y,z);
46 Double_t rot[9]; g->GetRotMatrix(lay,lad,det,rot);
47 fYshift[m] = x*rot[0] + y*rot[1];
48 fZshift[m] = (Double_t)z;
49 fNdet[m] = (lad-1)*g->GetNdetectors(lay) + (det-1);
50 }
c391f9d9 51 fNModules = g->GetIndexMax();
7f4044f0 52
53 //SPD geometry
54 fLastSPD1=g->GetModuleIndex(2,1,1)-1;
55 fNySPD=256; fNzSPD=160;
56 fYpitchSPD=0.0050;
57 fZ1pitchSPD=0.0425; fZ2pitchSPD=0.0625;
58 fHwSPD=0.64; fHlSPD=3.48;
59 fYSPD[0]=0.5*fYpitchSPD;
60 for (m=1; m<fNySPD; m++) fYSPD[m]=fYSPD[m-1]+fYpitchSPD;
61 fZSPD[0]=fZ1pitchSPD;
62 for (m=1; m<fNzSPD; m++) {
63 Double_t dz=fZ1pitchSPD;
64 if (m==31 || m==32 || m==63 || m==64 || m==95 || m==96 ||
65 m==127 || m==128) dz=fZ2pitchSPD;
66 fZSPD[m]=fZSPD[m-1]+dz;
67 }
68 for (m=0; m<fNzSPD; m++) {
69 Double_t dz=0.5*fZ1pitchSPD;
70 if (m==31 || m==32 || m==63 || m==64 || m==95 || m==96 ||
71 m==127 || m==128) dz=0.5*fZ2pitchSPD;
72 fZSPD[m]-=dz;
73 }
74
75 //SDD geometry
76 fNySDD=256; fNzSDD=256;
77 fYpitchSDD=0.01825;
78 fZpitchSDD=0.02940;
79 fHwSDD=3.5085; fHlSDD=3.7632;
80 fYoffSDD=0.0425;
81
82 //SSD geometry
83 fLastSSD1=g->GetModuleIndex(6,1,1)-1;
84 fYpitchSSD=0.0095;
85 fHwSSD=3.65;
86 fHlSSD=2.00;
87 fTanP=0.0275;
88 fTanN=0.0075;
89}
90
c630aafd 91Int_t AliITSclustererV2::Digits2Clusters(TTree *dTree, TTree *cTree) {
7f4044f0 92 //------------------------------------------------------------
93 // This function creates ITS clusters
94 //------------------------------------------------------------
95 Int_t ncl=0;
7f4044f0 96
7f4044f0 97 if (!dTree) {
c630aafd 98 Error("Digits2Clusters","Can't get the tree with digits !");
99 return 1;
7f4044f0 100 }
101
102 TClonesArray *digitsSPD=new TClonesArray("AliITSdigitSPD",3000);
103 dTree->SetBranchAddress("ITSDigitsSPD",&digitsSPD);
104 TClonesArray *digitsSDD=new TClonesArray("AliITSdigitSDD",3000);
105 dTree->SetBranchAddress("ITSDigitsSDD",&digitsSDD);
106 TClonesArray *digitsSSD=new TClonesArray("AliITSdigitSSD",3000);
107 dTree->SetBranchAddress("ITSDigitsSSD",&digitsSSD);
108
7f4044f0 109 TClonesArray *clusters=new TClonesArray("AliITSclusterV2",1000);
c630aafd 110 TBranch *branch=cTree->GetBranch("Clusters");
111 if (!branch) cTree->Branch("Clusters",&clusters);
112 else branch->SetAddress(&clusters);
113
114 Int_t mmax=(Int_t)dTree->GetEntries();
7f4044f0 115
116 for (fI=0; fI<mmax; fI++) {
117 dTree->GetEvent(fI);
118
119 if (digitsSPD->GetEntriesFast()!=0)
120 FindClustersSPD(digitsSPD,clusters);
121 else if(digitsSDD->GetEntriesFast()!=0)
122 FindClustersSDD(digitsSDD,clusters);
123 else if(digitsSSD->GetEntriesFast()!=0)
124 FindClustersSSD(digitsSSD,clusters);
125
126 ncl+=clusters->GetEntriesFast();
127
c630aafd 128 cTree->Fill();
7f4044f0 129
130 digitsSPD->Clear();
131 digitsSDD->Clear();
132 digitsSSD->Clear();
133 clusters->Clear();
134 }
c630aafd 135
136 //cTree->Write();
7f4044f0 137
138 delete clusters;
139
140 delete digitsSPD;
141 delete digitsSDD;
142 delete digitsSSD;
143
7941072e 144 //delete dTree;
145
c630aafd 146 Info("Digits2Clusters","Number of found clusters : %d",ncl);
7f4044f0 147
c630aafd 148 return 0;
7f4044f0 149}
150
7941072e 151void AliITSclustererV2::Digits2Clusters(AliRawReader* rawReader) {
c391f9d9 152 //------------------------------------------------------------
153 // This function creates ITS clusters from raw data
154 //------------------------------------------------------------
7941072e 155 AliRunLoader* runLoader = AliRunLoader::GetRunLoader();
156 if (!runLoader) {
157 Error("Digits2Clusters", "no run loader found");
158 return;
159 }
160 AliLoader* itsLoader = runLoader->GetLoader("ITSLoader");
161 if (!itsLoader) {
162 Error("Digits2Clusters", "no loader for ITS found");
c391f9d9 163 return;
164 }
7941072e 165 if (!itsLoader->TreeR()) itsLoader->MakeTree("R");
166 TTree* cTree = itsLoader->TreeR();
c391f9d9 167
c391f9d9 168 TClonesArray *array=new TClonesArray("AliITSclusterV2",1000);
7941072e 169 cTree->Branch("Clusters",&array);
c391f9d9 170 delete array;
171
f1e0c1c5 172 TClonesArray** clusters = new TClonesArray*[fNModules];
c391f9d9 173 // one TClonesArray per module
174
7941072e 175 rawReader->Reset();
176 AliITSRawStreamSPD inputSPD(rawReader);
c391f9d9 177 FindClustersSPD(&inputSPD, clusters);
7941072e 178
179 rawReader->Reset();
180 AliITSRawStreamSDD inputSDD(rawReader);
c391f9d9 181 FindClustersSDD(&inputSDD, clusters);
7941072e 182
183 rawReader->Reset();
184 AliITSRawStreamSSD inputSSD(rawReader);
c391f9d9 185 FindClustersSSD(&inputSSD, clusters);
186
187 // write all clusters to the tree
188 Int_t nClusters = 0;
189 for (Int_t iModule = 0; iModule < fNModules; iModule++) {
190 TClonesArray* array = clusters[iModule];
191 if (!array) {
192 Error("Digits2Clusters", "data for module %d missing!", iModule);
193 array = new TClonesArray("AliITSclusterV2");
194 }
7941072e 195 cTree->SetBranchAddress("Clusters", &array);
196 cTree->Fill();
c391f9d9 197 nClusters += array->GetEntriesFast();
198 delete array;
199 }
7941072e 200 itsLoader->WriteRecPoints("OVERWRITE");
c391f9d9 201
202 Info("Digits2Clusters", "total number of found clusters in ITS: %d\n",
203 nClusters);
204}
205
7f4044f0 206//**** Fast clusters *******************************
207#include "TParticle.h"
208
209#include "AliITS.h"
210#include "AliITSmodule.h"
211#include "AliITSRecPoint.h"
212#include "AliITSsimulationFastPoints.h"
213#include "AliITSRecPoint.h"
214
215static void CheckLabels(Int_t lab[3]) {
216 //------------------------------------------------------------
217 // Tries to find mother's labels
218 //------------------------------------------------------------
219 Int_t label=lab[0];
220 if (label>=0) {
221 TParticle *part=(TParticle*)gAlice->Particle(label);
222 label=-3;
223 while (part->P() < 0.005) {
224 Int_t m=part->GetFirstMother();
c630aafd 225 if (m<0) {
226 Info("CheckLabels","Primary momentum: %f",part->P());
227 break;
228 }
1cca57bf 229 if (part->GetStatusCode()>0) {
c630aafd 230 Info("CheckLabels","Primary momentum: %f",part->P());
231 break;
1cca57bf 232 }
7f4044f0 233 label=m;
234 part=(TParticle*)gAlice->Particle(label);
235 }
236 if (lab[1]<0) lab[1]=label;
237 else if (lab[2]<0) lab[2]=label;
238 else ;//cerr<<"CheckLabels : No empty labels !\n";
239 }
240}
241
1cca57bf 242void AliITSclustererV2::RecPoints2Clusters
243(const TClonesArray *points, Int_t idx, TClonesArray *clusters) {
7f4044f0 244 //------------------------------------------------------------
1cca57bf 245 // Conversion AliITSRecPoint -> AliITSclusterV2 for the ITS
246 // subdetector indexed by idx
7f4044f0 247 //------------------------------------------------------------
248 TClonesArray &cl=*clusters;
249 Int_t ncl=points->GetEntriesFast();
250 for (Int_t i=0; i<ncl; i++) {
251 AliITSRecPoint *p = (AliITSRecPoint *)points->UncheckedAt(i);
252 Float_t lp[5];
1cca57bf 253 lp[0]=-p->GetX()-fYshift[idx]; if (idx<=fLastSPD1) lp[0]*=-1; //SPD1
254 lp[1]=p->GetZ()+fZshift[idx];
255 lp[2]=p->GetSigmaX2();
256 lp[3]=p->GetSigmaZ2();
257 lp[4]=p->GetQ();
7f4044f0 258 Int_t lab[4];
259 lab[0]=p->GetLabel(0); lab[1]=p->GetLabel(1); lab[2]=p->GetLabel(2);
1cca57bf 260 lab[3]=fNdet[idx];
7f4044f0 261 CheckLabels(lab);
262 new (cl[i]) AliITSclusterV2(lab,lp);
263 }
264}
265
c630aafd 266Int_t AliITSclustererV2::Hits2Clusters(TTree *hTree, TTree *cTree) {
7f4044f0 267 //------------------------------------------------------------
268 // This function creates ITS clusters
269 //------------------------------------------------------------
7f4044f0 270 if (!gAlice) {
c630aafd 271 Error("Hits2Clusters","gAlice==0 !");
272 return 1;
7f4044f0 273 }
274
275 AliITS *its = (AliITS*)gAlice->GetModule("ITS");
276 if (!its) {
c630aafd 277 Error("Hits2Clusters","Can't find the ITS !");
278 return 2;
7f4044f0 279 }
280 AliITSgeom *geom=its->GetITSgeom();
281 Int_t mmax=geom->GetIndexMax();
282
283 its->InitModules(-1,mmax);
c630aafd 284 its->FillModules(hTree,0);
7f4044f0 285
7f4044f0 286 TClonesArray *clusters=new TClonesArray("AliITSclusterV2",1000);
c630aafd 287 TBranch *branch=cTree->GetBranch("Clusters");
288 if (!branch) cTree->Branch("Clusters",&clusters);
289 else branch->SetAddress(&clusters);
7f4044f0 290
291 static TClonesArray *points=its->RecPoints();
292 AliITSsimulationFastPoints sim;
293 Int_t ncl=0;
294 for (Int_t m=0; m<mmax; m++) {
295 AliITSmodule *mod=its->GetModule(m);
296 sim.CreateFastRecPoints(mod,m,gRandom);
297
1cca57bf 298 RecPoints2Clusters(points, m, clusters);
7f4044f0 299 its->ResetRecPoints();
300
301 ncl+=clusters->GetEntriesFast();
c630aafd 302 cTree->Fill();
7f4044f0 303 clusters->Clear();
304 }
7f4044f0 305
c630aafd 306 Info("Hits2Clusters","Number of found fast clusters : %d",ncl);
307
308 //cTree->Write();
7f4044f0 309
310 delete clusters;
311
c630aafd 312 return 0;
7f4044f0 313}
314
315//***********************************
316
317#ifndef V1
318
319void AliITSclustererV2::
320FindCluster(Int_t k,Int_t maxz,AliBin *bins,Int_t &n,Int_t *idx) {
321 //------------------------------------------------------------
322 // returns an array of indices of digits belonging to the cluster
323 // (needed when the segmentation is not regular)
324 //------------------------------------------------------------
325 if (n<200) idx[n++]=bins[k].GetIndex();
326 bins[k].Use();
327
328 if (bins[k-maxz].IsNotUsed()) FindCluster(k-maxz,maxz,bins,n,idx);
329 if (bins[k-1 ].IsNotUsed()) FindCluster(k-1 ,maxz,bins,n,idx);
330 if (bins[k+maxz].IsNotUsed()) FindCluster(k+maxz,maxz,bins,n,idx);
331 if (bins[k+1 ].IsNotUsed()) FindCluster(k+1 ,maxz,bins,n,idx);
332 /*
333 if (bins[k-maxz-1].IsNotUsed()) FindCluster(k-maxz-1,maxz,bins,n,idx);
334 if (bins[k-maxz+1].IsNotUsed()) FindCluster(k-maxz+1,maxz,bins,n,idx);
335 if (bins[k+maxz-1].IsNotUsed()) FindCluster(k+maxz-1,maxz,bins,n,idx);
336 if (bins[k+maxz+1].IsNotUsed()) FindCluster(k+maxz+1,maxz,bins,n,idx);
337 */
338}
339
340void AliITSclustererV2::
341FindClustersSPD(const TClonesArray *digits, TClonesArray *clusters) {
342 //------------------------------------------------------------
343 // Actual SPD cluster finder
344 //------------------------------------------------------------
c391f9d9 345 Int_t kNzBins = fNzSPD + 2;
346 const Int_t kMAXBIN=kNzBins*(fNySPD+2);
7f4044f0 347
348 Int_t ndigits=digits->GetEntriesFast();
349 AliBin *bins=new AliBin[kMAXBIN];
350
351 Int_t k;
352 AliITSdigitSPD *d=0;
353 for (k=0; k<ndigits; k++) {
354 d=(AliITSdigitSPD*)digits->UncheckedAt(k);
355 Int_t i=d->GetCoord2()+1; //y
356 Int_t j=d->GetCoord1()+1;
c391f9d9 357 bins[i*kNzBins+j].SetIndex(k);
358 bins[i*kNzBins+j].SetMask(1);
7f4044f0 359 }
360
361 Int_t n=0; TClonesArray &cl=*clusters;
362 for (k=0; k<kMAXBIN; k++) {
363 if (!bins[k].IsNotUsed()) continue;
364 Int_t ni=0, idx[200];
c391f9d9 365 FindCluster(k,kNzBins,bins,ni,idx);
c630aafd 366 if (ni==200) {
367 Info("FindClustersSPD","Too big cluster !");
368 continue;
369 }
7f4044f0 370 Int_t lab[4];
371 lab[0]=-2;
372 lab[1]=-2;
373 lab[2]=-2;
374 lab[3]=fNdet[fI];
375
376 d=(AliITSdigitSPD*)digits->UncheckedAt(idx[0]);
377 Int_t ymin=d->GetCoord2(),ymax=ymin;
378 Int_t zmin=d->GetCoord1(),zmax=zmin;
379 Float_t y=0.,z=0.,q=0.;
380 for (Int_t l=0; l<ni; l++) {
381 d=(AliITSdigitSPD*)digits->UncheckedAt(idx[l]);
382
383 if (ymin > d->GetCoord2()) ymin=d->GetCoord2();
384 if (ymax < d->GetCoord2()) ymax=d->GetCoord2();
385 if (zmin > d->GetCoord1()) zmin=d->GetCoord1();
386 if (zmax < d->GetCoord1()) zmax=d->GetCoord1();
387
388 Int_t lab0=(d->GetTracks())[0];
389 if (lab0>=0) {
390 if (lab[0]<0) {
391 lab[0]=lab0;
392 } else if (lab[1]<0) {
393 if (lab0!=lab[0]) lab[1]=lab0;
394 } else if (lab[2]<0) {
395 if (lab0!=lab[0])
396 if (lab0!=lab[1]) lab[2]=lab0;
397 }
398 }
399 Float_t qq=d->GetSignal();
400 y+=qq*fYSPD[d->GetCoord2()]; z+=qq*fZSPD[d->GetCoord1()]; q+=qq;
401 }
402 y/=q; z/=q;
403 y-=fHwSPD; z-=fHlSPD;
404
405 Float_t lp[5];
406 lp[0]=-y-fYshift[fI]; if (fI<=fLastSPD1) lp[0]=-lp[0];
407 lp[1]= z+fZshift[fI];
408 lp[2]= fYpitchSPD*fYpitchSPD/12.;
409 lp[3]= fZ1pitchSPD*fZ1pitchSPD/12.;
410 //lp[4]= q;
411 lp[4]= (zmax-zmin+1)*100 + (ymax-ymin+1);
412
413 //CheckLabels(lab);
c391f9d9 414 d=(AliITSdigitSPD*)digits->UncheckedAt(idx[0]);
7f4044f0 415 new (cl[n]) AliITSclusterV2(lab,lp); n++;
416 }
417
418 delete bins;
419}
420
c391f9d9 421void AliITSclustererV2::FindClustersSPD(AliITSRawStream* input,
422 TClonesArray** clusters)
423{
424 //------------------------------------------------------------
425 // Actual SPD cluster finder for raw data
426 //------------------------------------------------------------
427
428 Int_t nClustersSPD = 0;
429 Int_t kNzBins = fNzSPD + 2;
430 Int_t kNyBins = fNySPD + 2;
431 Int_t kMaxBin = kNzBins * kNyBins;
432 AliBin* bins = NULL;
433
434 // read raw data input stream
435 while (kTRUE) {
436 Bool_t next = input->Next();
437 if (!next || input->IsNewModule()) {
438 Int_t iModule = input->GetPrevModuleID();
439
440 // when all data from a module was read, search for clusters
441 if (bins) {
442 clusters[iModule] = new TClonesArray("AliITSclusterV2");
443 Int_t nClusters = 0;
444
445 for (Int_t iBin = 0; iBin < kMaxBin; iBin++) {
446 if (bins[iBin].IsUsed()) continue;
447 Int_t nBins = 0;
448 Int_t idxBins[200];
449 FindCluster(iBin, kNzBins, bins, nBins, idxBins);
450 if (nBins == 200) {
451 Error("FindClustersSPD", "SPD: Too big cluster !\n");
452 continue;
453 }
454
455 Int_t label[4];
456 label[0] = -2;
457 label[1] = -2;
458 label[2] = -2;
459// label[3] = iModule;
460 label[3] = fNdet[iModule];
461
462 Int_t ymin = (idxBins[0] / kNzBins) - 1;
463 Int_t ymax = ymin;
464 Int_t zmin = (idxBins[0] % kNzBins) - 1;
465 Int_t zmax = zmin;
466 Float_t y = 0.;
467 Float_t z = 0.;
468 Float_t q = 0.;
469 for (Int_t idx = 0; idx < nBins; idx++) {
470 Int_t iy = (idxBins[idx] / kNzBins) - 1;
471 Int_t iz = (idxBins[idx] % kNzBins) - 1;
472 if (ymin > iy) ymin = iy;
473 if (ymax < iy) ymax = iy;
474 if (zmin > iz) zmin = iz;
475 if (zmax < iz) zmax = iz;
476
477 Float_t qBin = bins[idxBins[idx]].GetQ();
478 y += qBin * fYSPD[iy];
479 z += qBin * fZSPD[iz];
480 q += qBin;
481 }
482 y /= q;
483 z /= q;
484 y -= fHwSPD;
485 z -= fHlSPD;
486
487 Float_t hit[5]; // y, z, sigma(y)^2, sigma(z)^2, charge
488 hit[0] = -y-fYshift[iModule];
489 if (iModule <= fLastSPD1) hit[0] = -hit[0];
490 hit[1] = z+fZshift[iModule];
491 hit[2] = fYpitchSPD*fYpitchSPD/12.;
492 hit[3] = fZ1pitchSPD*fZ1pitchSPD/12.;
493// hit[4] = q;
494 hit[4] = (zmax-zmin+1)*100 + (ymax-ymin+1);
495
496 //CheckLabels(label);
497 new (clusters[iModule]->AddrAt(nClusters))
498 AliITSclusterV2(label, hit);
499 nClusters++;
500 }
501
502 nClustersSPD += nClusters;
503 delete bins;
504 }
505
506 if (!next) break;
507 bins = new AliBin[kMaxBin];
508 }
509
510 // fill the current digit into the bins array
511 Int_t index = (input->GetCoord2()+1) * kNzBins + (input->GetCoord1()+1);
512 bins[index].SetIndex(index);
513 bins[index].SetMask(1);
514 bins[index].SetQ(1);
515 }
516
517 Info("FindClustersSPD", "found clusters in ITS SPD: %d", nClustersSPD);
518}
519
520
7f4044f0 521Bool_t AliITSclustererV2::IsMaximum(Int_t k,Int_t max,const AliBin *bins) {
522 //------------------------------------------------------------
523 //is this a local maximum ?
524 //------------------------------------------------------------
525 UShort_t q=bins[k].GetQ();
526 if (q==1023) return kFALSE;
527 if (bins[k-max].GetQ() > q) return kFALSE;
528 if (bins[k-1 ].GetQ() > q) return kFALSE;
529 if (bins[k+max].GetQ() > q) return kFALSE;
530 if (bins[k+1 ].GetQ() > q) return kFALSE;
531 if (bins[k-max-1].GetQ() > q) return kFALSE;
532 if (bins[k+max-1].GetQ() > q) return kFALSE;
533 if (bins[k+max+1].GetQ() > q) return kFALSE;
534 if (bins[k-max+1].GetQ() > q) return kFALSE;
535 return kTRUE;
536}
537
538void AliITSclustererV2::
539FindPeaks(Int_t k,Int_t max,AliBin *b,Int_t *idx,UInt_t *msk,Int_t& n) {
540 //------------------------------------------------------------
541 //find local maxima
542 //------------------------------------------------------------
543 if (n<31)
544 if (IsMaximum(k,max,b)) {
545 idx[n]=k; msk[n]=(2<<n);
546 n++;
547 }
548 b[k].SetMask(0);
549 if (b[k-max].GetMask()&1) FindPeaks(k-max,max,b,idx,msk,n);
550 if (b[k-1 ].GetMask()&1) FindPeaks(k-1 ,max,b,idx,msk,n);
551 if (b[k+max].GetMask()&1) FindPeaks(k+max,max,b,idx,msk,n);
552 if (b[k+1 ].GetMask()&1) FindPeaks(k+1 ,max,b,idx,msk,n);
553}
554
555void AliITSclustererV2::
556MarkPeak(Int_t k, Int_t max, AliBin *bins, UInt_t m) {
557 //------------------------------------------------------------
558 //mark this peak
559 //------------------------------------------------------------
560 UShort_t q=bins[k].GetQ();
561
562 bins[k].SetMask(bins[k].GetMask()|m);
563
564 if (bins[k-max].GetQ() <= q)
565 if ((bins[k-max].GetMask()&m) == 0) MarkPeak(k-max,max,bins,m);
566 if (bins[k-1 ].GetQ() <= q)
567 if ((bins[k-1 ].GetMask()&m) == 0) MarkPeak(k-1 ,max,bins,m);
568 if (bins[k+max].GetQ() <= q)
569 if ((bins[k+max].GetMask()&m) == 0) MarkPeak(k+max,max,bins,m);
570 if (bins[k+1 ].GetQ() <= q)
571 if ((bins[k+1 ].GetMask()&m) == 0) MarkPeak(k+1 ,max,bins,m);
572}
573
574void AliITSclustererV2::
575MakeCluster(Int_t k,Int_t max,AliBin *bins,UInt_t m,AliITSclusterV2 &c) {
576 //------------------------------------------------------------
577 //make cluster using digits of this peak
578 //------------------------------------------------------------
579 Float_t q=(Float_t)bins[k].GetQ();
580 Int_t i=k/max, j=k-i*max;
581
582 c.SetQ(c.GetQ()+q);
583 c.SetY(c.GetY()+i*q);
584 c.SetZ(c.GetZ()+j*q);
585 c.SetSigmaY2(c.GetSigmaY2()+i*i*q);
586 c.SetSigmaZ2(c.GetSigmaZ2()+j*j*q);
587
588 bins[k].SetMask(0xFFFFFFFE);
589
590 if (bins[k-max].GetMask() == m) MakeCluster(k-max,max,bins,m,c);
591 if (bins[k-1 ].GetMask() == m) MakeCluster(k-1 ,max,bins,m,c);
592 if (bins[k+max].GetMask() == m) MakeCluster(k+max,max,bins,m,c);
593 if (bins[k+1 ].GetMask() == m) MakeCluster(k+1 ,max,bins,m,c);
594}
595
596void AliITSclustererV2::
c391f9d9 597FindClustersSDD(AliBin* bins[2], Int_t nMaxBin, Int_t nzBins,
598 const TClonesArray *digits, TClonesArray *clusters) {
7f4044f0 599 //------------------------------------------------------------
600 // Actual SDD cluster finder
601 //------------------------------------------------------------
7f4044f0 602 Int_t ncl=0; TClonesArray &cl=*clusters;
603 for (Int_t s=0; s<2; s++)
c391f9d9 604 for (Int_t i=0; i<nMaxBin; i++) {
7f4044f0 605 if (bins[s][i].IsUsed()) continue;
606 Int_t idx[32]; UInt_t msk[32]; Int_t npeaks=0;
c391f9d9 607 FindPeaks(i, nzBins, bins[s], idx, msk, npeaks);
7f4044f0 608
609 if (npeaks>30) continue;
610
611 Int_t k,l;
612 for (k=0; k<npeaks-1; k++){//mark adjacent peaks
613 if (idx[k] < 0) continue; //this peak is already removed
614 for (l=k+1; l<npeaks; l++) {
615 if (idx[l] < 0) continue; //this peak is already removed
c391f9d9 616 Int_t ki=idx[k]/nzBins, kj=idx[k] - ki*nzBins;
617 Int_t li=idx[l]/nzBins, lj=idx[l] - li*nzBins;
7f4044f0 618 Int_t di=TMath::Abs(ki - li);
619 Int_t dj=TMath::Abs(kj - lj);
620 if (di>1 || dj>1) continue;
621 if (bins[s][idx[k]].GetQ() > bins[s][idx[l]].GetQ()) {
622 msk[l]=msk[k];
623 idx[l]*=-1;
624 } else {
625 msk[k]=msk[l];
626 idx[k]*=-1;
627 break;
628 }
629 }
630 }
631
632 for (k=0; k<npeaks; k++) {
c391f9d9 633 MarkPeak(TMath::Abs(idx[k]), nzBins, bins[s], msk[k]);
7f4044f0 634 }
635
636 for (k=0; k<npeaks; k++) {
637 if (idx[k] < 0) continue; //removed peak
638 AliITSclusterV2 c;
c391f9d9 639 MakeCluster(idx[k], nzBins, bins[s], msk[k], c);
7f4044f0 640
641 //if (c.GetQ() < 200) continue; //noise cluster
642
643 /*
644 Float_t s2 = c.GetSigmaY2()/c.GetQ() - c.GetY()*c.GetY();
645 Float_t w=par->GetPadPitchWidth(sec);
646 c.SetSigmaY2((s2 + 1./12.)*w*w);
647 if (s2 != 0.) {
648 c.SetSigmaY2(c.GetSigmaY2()*0.108);
649 if (sec<par->GetNInnerSector()) c.SetSigmaY2(c.GetSigmaY2()*2.07);
650 }
651
652 s2 = c.GetSigmaZ2()/c.GetQ() - c.GetZ()*c.GetZ();
653 w=par->GetZWidth();
654 c.SetSigmaZ2((s2 + 1./12.)*w*w);
655 if (s2 != 0.) {
656 c.SetSigmaZ2(c.GetSigmaZ2()*0.169);
657 if (sec<par->GetNInnerSector()) c.SetSigmaZ2(c.GetSigmaZ2()*1.77);
658 }
659 */
660
661 c.SetSigmaY2(0.0030*0.0030);
662 c.SetSigmaZ2(0.0020*0.0020);
663 c.SetDetectorIndex(fNdet[fI]);
664
665 Float_t y=c.GetY(),z=c.GetZ(), q=c.GetQ();
666 y/=q; z/=q;
667
668 y=(y-0.5)*fYpitchSDD;
669 y-=fHwSDD;
670 y-=fYoffSDD; //delay ?
671 if (s) y=-y;
672
673 z=(z-0.5)*fZpitchSDD;
674 z-=fHlSDD;
675
676 y=-y-fYshift[fI];
677 z= z+fZshift[fI];
678 c.SetY(y);
679 c.SetZ(z);
680
681 c.SetQ(q/20.); //to be consistent with the SSD charges
682
c391f9d9 683 if (digits) {
684 AliBin *b=&bins[s][idx[k]];
685 AliITSdigitSDD* d=(AliITSdigitSDD*)digits->UncheckedAt(b->GetIndex());
686 Int_t l0=(d->GetTracks())[0];
687 if (l0<0) {
688 b=&bins[s][idx[k]-1];
689 if (b->GetQ()>0) {
690 d=(AliITSdigitSDD*)digits->UncheckedAt(b->GetIndex());
691 l0=(d->GetTracks())[0];
692 }
693 }
694 if (l0<0) {
695 b=&bins[s][idx[k]+1];
696 if (b->GetQ()>0) {
697 d=(AliITSdigitSDD*)digits->UncheckedAt(b->GetIndex());
698 l0=(d->GetTracks())[0];
699 }
700 }
701 if (l0<0) {
702 b=&bins[s][idx[k]-nzBins];
703 if (b->GetQ()>0) {
704 d=(AliITSdigitSDD*)digits->UncheckedAt(b->GetIndex());
705 l0=(d->GetTracks())[0];
706 }
707 }
708 if (l0<0) {
709 b=&bins[s][idx[k]+nzBins];
710 if (b->GetQ()>0) {
711 d=(AliITSdigitSDD*)digits->UncheckedAt(b->GetIndex());
712 l0=(d->GetTracks())[0];
713 }
7f4044f0 714 }
7f4044f0 715
c391f9d9 716 if (l0<0) {
717 b=&bins[s][idx[k]+nzBins+1];
718 if (b->GetQ()>0) {
719 d=(AliITSdigitSDD*)digits->UncheckedAt(b->GetIndex());
720 l0=(d->GetTracks())[0];
721 }
722 }
723 if (l0<0) {
724 b=&bins[s][idx[k]+nzBins-1];
725 if (b->GetQ()>0) {
726 d=(AliITSdigitSDD*)digits->UncheckedAt(b->GetIndex());
727 l0=(d->GetTracks())[0];
728 }
729 }
730 if (l0<0) {
731 b=&bins[s][idx[k]-nzBins+1];
732 if (b->GetQ()>0) {
733 d=(AliITSdigitSDD*)digits->UncheckedAt(b->GetIndex());
734 l0=(d->GetTracks())[0];
735 }
736 }
737 if (l0<0) {
738 b=&bins[s][idx[k]-nzBins-1];
739 if (b->GetQ()>0) {
740 d=(AliITSdigitSDD*)digits->UncheckedAt(b->GetIndex());
741 l0=(d->GetTracks())[0];
742 }
743 }
7f4044f0 744
c391f9d9 745 {
746 Int_t lab[3];
747 lab[0]=(d->GetTracks())[0];
748 lab[1]=(d->GetTracks())[1];
749 lab[2]=(d->GetTracks())[2];
750 //CheckLabels(lab);
751 c.SetLabel(lab[0],0);
752 c.SetLabel(lab[1],1);
753 c.SetLabel(lab[2],2);
754 }
755 }
7f4044f0 756
757 new (cl[ncl]) AliITSclusterV2(c); ncl++;
758 }
759 }
c391f9d9 760}
761
762void AliITSclustererV2::
763FindClustersSDD(const TClonesArray *digits, TClonesArray *clusters) {
764 //------------------------------------------------------------
765 // Actual SDD cluster finder
766 //------------------------------------------------------------
767 Int_t kNzBins = fNzSDD + 2;
768 const Int_t kMAXBIN=kNzBins*(fNySDD+2);
769
770 AliBin *bins[2];
771 bins[0]=new AliBin[kMAXBIN];
772 bins[1]=new AliBin[kMAXBIN];
773
774 AliITSdigitSDD *d=0;
775 Int_t i, ndigits=digits->GetEntriesFast();
776 for (i=0; i<ndigits; i++) {
777 d=(AliITSdigitSDD*)digits->UncheckedAt(i);
778 Int_t y=d->GetCoord2()+1; //y
779 Int_t z=d->GetCoord1()+1; //z
780 Int_t q=d->GetSignal();
781 if (z <= fNzSDD) {
782 bins[0][y*kNzBins+z].SetQ(q);
783 bins[0][y*kNzBins+z].SetMask(1);
784 bins[0][y*kNzBins+z].SetIndex(i);
785 } else {
786 z-=fNzSDD;
787 bins[1][y*kNzBins+z].SetQ(q);
788 bins[1][y*kNzBins+z].SetMask(1);
789 bins[1][y*kNzBins+z].SetIndex(i);
790 }
791 }
792
793 FindClustersSDD(bins, kMAXBIN, kNzBins, digits, clusters);
7f4044f0 794
795 delete[] bins[0];
796 delete[] bins[1];
797}
798
c391f9d9 799void AliITSclustererV2::FindClustersSDD(AliITSRawStream* input,
800 TClonesArray** clusters)
801{
802 //------------------------------------------------------------
803 // Actual SDD cluster finder for raw data
804 //------------------------------------------------------------
805 Int_t nClustersSDD = 0;
806 Int_t kNzBins = fNzSDD + 2;
807 Int_t kMaxBin = kNzBins * (fNySDD+2);
808 AliBin* bins[2] = {NULL, NULL};
809
810 // read raw data input stream
811 while (kTRUE) {
812 Bool_t next = input->Next();
813 if (!next || input->IsNewModule()) {
814 Int_t iModule = input->GetPrevModuleID();
815
816 // when all data from a module was read, search for clusters
817 if (bins[0]) {
818 clusters[iModule] = new TClonesArray("AliITSclusterV2");
819 fI = iModule;
820 FindClustersSDD(bins, kMaxBin, kNzBins, NULL, clusters[iModule]);
821 Int_t nClusters = clusters[iModule]->GetEntriesFast();
822 nClustersSDD += nClusters;
823 delete[] bins[0];
824 delete[] bins[1];
825 }
826
827 if (!next) break;
828 bins[0] = new AliBin[kMaxBin];
829 bins[1] = new AliBin[kMaxBin];
830 }
831
832 // fill the current digit into the bins array
833 Int_t iz = input->GetCoord1()+1;
834 Int_t side = ((iz <= fNzSDD) ? 0 : 1);
835 iz -= side*fNzSDD;
836 Int_t index = (input->GetCoord2()+1) * kNzBins + iz;
837 bins[side][index].SetQ(input->GetSignal());
838 bins[side][index].SetMask(1);
839 bins[side][index].SetIndex(index);
840 }
841
842 Info("FindClustersSDD", "found clusters in ITS SDD: %d", nClustersSDD);
843}
844
845void AliITSclustererV2::
846FindClustersSSD(Ali1Dcluster* neg, Int_t nn,
847 Ali1Dcluster* pos, Int_t np,
848 TClonesArray *clusters) {
849 //------------------------------------------------------------
850 // Actual SSD cluster finder
851 //------------------------------------------------------------
852 TClonesArray &cl=*clusters;
853
854 Int_t lab[4]={-2,-2,-2,-2};
855 Float_t tanp=fTanP, tann=fTanN;
856 if (fI>fLastSSD1) {tann=fTanP; tanp=fTanN;}
857
858 Int_t idet=fNdet[fI];
859 Int_t ncl=0;
860 for (Int_t i=0; i<np; i++) {
861 //Float_t dq_min=1.e+33;
862 Float_t ybest=1000,zbest=1000,qbest=0;
863 Float_t yp=pos[i].GetY()*fYpitchSSD;
864 for (Int_t j=0; j<nn; j++) {
865 //if (pos[i].fTracks[0] != neg[j].fTracks[0]) continue;
866 Float_t yn=neg[j].GetY()*fYpitchSSD;
867 Float_t zt=(2*fHlSSD*tanp + yp - yn)/(tann+tanp);
868 Float_t yt=yn + tann*zt;
869 zt-=fHlSSD; yt-=fHwSSD;
870 if (TMath::Abs(yt)<fHwSSD+0.01)
871 if (TMath::Abs(zt)<fHlSSD+0.01) {
872 //if (TMath::Abs(pos[i].GetQ()-neg[j].GetQ())<dq_min) {
873 //dq_min=TMath::Abs(pos[i].GetQ()-neg[j].GetQ());
874 ybest=yt; zbest=zt;
875 qbest=0.5*(pos[i].GetQ()+neg[j].GetQ());
876
877 lab[0]=pos[i].GetLabel(0);
878 lab[1]=pos[i].GetLabel(1);
879 lab[2]=neg[i].GetLabel(0);
880 lab[3]=(((i<<10) + j)<<10) + idet; // pos|neg|det
881 Float_t lp[5];
882 lp[0]=-ybest-fYshift[fI];
883 lp[1]= zbest+fZshift[fI];
884 lp[2]=0.0025*0.0025; //SigmaY2
885 lp[3]=0.110*0.110; //SigmaZ2
886 if (pos[i].GetNd()+neg[j].GetNd() > 4) {
887 lp[2]*=9;
888 lp[3]*=9;
889 }
890 lp[4]=qbest; //Q
891
892 //CheckLabels(lab);
893 new (cl[ncl]) AliITSclusterV2(lab,lp); ncl++;
894 }
895 }
896 /*
897 if (ybest<100) {
898 lab[3]=idet;
899 Float_t lp[5];
900 lp[0]=-ybest-fYshift[fI];
901 lp[1]= zbest+fZshift[fI];
902 lp[2]=0.002*0.002; //SigmaY2
903 lp[3]=0.080*0.080; //SigmaZ2
904 lp[4]=qbest; //Q
905 //
906 new (cl[ncl]) AliITSclusterV2(lab,lp); ncl++;
907 }
908 */
909 }
910}
911
7f4044f0 912void AliITSclustererV2::
913FindClustersSSD(const TClonesArray *digits, TClonesArray *clusters) {
914 //------------------------------------------------------------
915 // Actual SSD cluster finder
916 //------------------------------------------------------------
917 Int_t smax=digits->GetEntriesFast();
918 if (smax==0) return;
919
920 const Int_t MAX=1000;
921 Int_t np=0, nn=0;
922 Ali1Dcluster pos[MAX], neg[MAX];
923 Float_t y=0., q=0., qmax=0.;
924 Int_t lab[4]={-2,-2,-2,-2};
925
7f4044f0 926 AliITSdigitSSD *d=(AliITSdigitSSD*)digits->UncheckedAt(0);
927 q += d->GetSignal();
928 y += d->GetCoord2()*d->GetSignal();
929 qmax=d->GetSignal();
930 lab[0]=d->GetTrack(0); lab[1]=d->GetTrack(1); lab[2]=d->GetTrack(2);
931 Int_t curr=d->GetCoord2();
932 Int_t flag=d->GetCoord1();
933 Int_t *n=&nn;
934 Ali1Dcluster *c=neg;
c391f9d9 935 Int_t nd=1;
7f4044f0 936 for (Int_t s=1; s<smax; s++) {
937 d=(AliITSdigitSSD*)digits->UncheckedAt(s);
938 Int_t strip=d->GetCoord2();
939 if ((strip-curr) > 1 || flag!=d->GetCoord1()) {
940 c[*n].SetY(y/q);
941 c[*n].SetQ(q);
942 c[*n].SetNd(nd);
943 c[*n].SetLabels(lab);
944 //Split suspiciously big cluster
945 if (nd>3) {
946 c[*n].SetY(y/q-0.5*nd);
947 c[*n].SetQ(0.5*q);
948 (*n)++;
949 if (*n==MAX) {
c630aafd 950 Error("FindClustersSSD","Too many 1D clusters !");
7f4044f0 951 return;
952 }
953 c[*n].SetY(y/q+0.5*nd);
954 c[*n].SetQ(0.5*q);
955 c[*n].SetNd(nd);
956 c[*n].SetLabels(lab);
957 }
958 (*n)++;
959 if (*n==MAX) {
c630aafd 960 Error("FindClustersSSD","Too many 1D clusters !");
7f4044f0 961 return;
962 }
963 y=q=qmax=0.;
964 nd=0;
965 lab[0]=lab[1]=lab[2]=-2;
966 if (flag!=d->GetCoord1()) { n=&np; c=pos; }
967 }
968 flag=d->GetCoord1();
969 q += d->GetSignal();
970 y += d->GetCoord2()*d->GetSignal();
971 nd++;
972 if (d->GetSignal()>qmax) {
973 qmax=d->GetSignal();
974 lab[0]=d->GetTrack(0); lab[1]=d->GetTrack(1); lab[2]=d->GetTrack(2);
975 }
976 curr=strip;
977 }
978 c[*n].SetY(y/q);
979 c[*n].SetQ(q);
980 c[*n].SetNd(nd);
981 c[*n].SetLabels(lab);
982 //Split suspiciously big cluster
983 if (nd>3) {
984 c[*n].SetY(y/q-0.5*nd);
985 c[*n].SetQ(0.5*q);
986 (*n)++;
987 if (*n==MAX) {
c630aafd 988 Error("FindClustersSSD","Too many 1D clusters !");
7f4044f0 989 return;
990 }
991 c[*n].SetY(y/q+0.5*nd);
992 c[*n].SetQ(0.5*q);
993 c[*n].SetNd(nd);
994 c[*n].SetLabels(lab);
995 }
996 (*n)++;
997 if (*n==MAX) {
c630aafd 998 Error("FindClustersSSD","Too many 1D clusters !");
7f4044f0 999 return;
1000 }
1001
c391f9d9 1002 FindClustersSSD(neg, nn, pos, np, clusters);
1003}
7f4044f0 1004
c391f9d9 1005void AliITSclustererV2::FindClustersSSD(AliITSRawStream* input,
1006 TClonesArray** clusters)
1007{
1008 //------------------------------------------------------------
1009 // Actual SSD cluster finder for raw data
1010 //------------------------------------------------------------
1011 Int_t nClustersSSD = 0;
1012 const Int_t MAX = 1000;
1013 Ali1Dcluster clusters1D[2][MAX];
1014 Int_t nClusters[2] = {0, 0};
1015 Float_t q = 0.;
1016 Float_t y = 0.;
1017 Int_t nDigits = 0;
1018 Int_t prevStrip = -1;
1019 Int_t prevFlag = -1;
1020
1021 // read raw data input stream
1022 while (kTRUE) {
1023 Bool_t next = input->Next();
1024
1025 // check if a new cluster starts
1026 Int_t strip = input->GetCoord2();
1027 Int_t flag = input->GetCoord1();
1028 if ((!next || input->IsNewModule() ||
1029 (strip-prevStrip > 1) || (flag != prevFlag)) &&
1030 (nDigits > 0)) {
1031 if (nClusters[prevFlag] == MAX) {
1032 Error("FindClustersSSD", "Too many 1D clusters !");
1033 return;
1034 }
1035 Ali1Dcluster& cluster = clusters1D[prevFlag][nClusters[prevFlag]++];
1036 cluster.SetY(y/q);
1037 cluster.SetQ(q);
1038 cluster.SetNd(nDigits);
1039
1040 //Split suspiciously big cluster
1041 if (nDigits > 3) {
1042 cluster.SetY(y/q - 0.5*nDigits);
1043 cluster.SetQ(0.5*q);
1044 if (nClusters[prevFlag] == MAX) {
1045 Error("FindClustersSSD", "Too many 1D clusters !");
1046 return;
1047 }
1048 Ali1Dcluster& cluster2 = clusters1D[prevFlag][nClusters[prevFlag]++];
1049 cluster2.SetY(y/q + 0.5*nDigits);
1050 cluster2.SetQ(0.5*q);
1051 cluster2.SetNd(nDigits);
7f4044f0 1052 }
c391f9d9 1053 y = q = 0.;
1054 nDigits = 0;
7f4044f0 1055 }
c391f9d9 1056
1057 if (!next || input->IsNewModule()) {
1058 Int_t iModule = input->GetPrevModuleID();
1059
1060 // when all data from a module was read, search for clusters
1061 if (prevFlag >= 0) {
1062 clusters[iModule] = new TClonesArray("AliITSclusterV2");
1063 fI = iModule;
1064 FindClustersSSD(&clusters1D[0][0], nClusters[0],
1065 &clusters1D[1][0], nClusters[1], clusters[iModule]);
1066 Int_t nClusters = clusters[iModule]->GetEntriesFast();
1067 nClustersSSD += nClusters;
1068 }
1069
1070 if (!next) break;
1071 nClusters[0] = nClusters[1] = 0;
1072 y = q = 0.;
1073 nDigits = 0;
7f4044f0 1074 }
c391f9d9 1075
1076 // add digit to current cluster
1077 q += input->GetSignal();
1078 y += strip * input->GetSignal();
1079 nDigits++;
1080 prevStrip = strip;
1081 prevFlag = flag;
7f4044f0 1082 }
c391f9d9 1083
1084 Info("FindClustersSSD", "found clusters in ITS SSD: %d", nClustersSSD);
7f4044f0 1085}
1086
1087#else //V1
1088
1089#include "AliITSDetType.h"
1090
1091#include "AliITSsegmentationSPD.h"
1092#include "AliITSClusterFinderSPD.h"
1093
1094#include "AliITSresponseSDD.h"
1095#include "AliITSsegmentationSDD.h"
1096#include "AliITSClusterFinderSDD.h"
1097
1098#include "AliITSsegmentationSSD.h"
1099#include "AliITSClusterFinderSSD.h"
1100
1101
1102void AliITSclustererV2::
1103FindClustersSPD(const TClonesArray *digits, TClonesArray *clusters) {
1104 //------------------------------------------------------------
1105 // Actual SPD cluster finding based on AliITSClusterFinderSPD
1106 //------------------------------------------------------------
1107 static AliITS *its=(AliITS*)gAlice->GetModule("ITS");
1108 static TClonesArray *points=its->RecPoints();
1109 static AliITSsegmentationSPD *seg=
1110 (AliITSsegmentationSPD *)its->DetType(0)->GetSegmentationModel();
1111 static AliITSClusterFinderSPD cf(seg, (TClonesArray*)digits, points);
1112
1113 cf.FindRawClusters(fI);
1cca57bf 1114 RecPoints2Clusters(points, fI, clusters);
7f4044f0 1115 its->ResetRecPoints();
1116
1117}
1118
1119void AliITSclustererV2::
1120FindClustersSDD(const TClonesArray *digits, TClonesArray *clusters) {
1121 //------------------------------------------------------------
1122 // Actual SDD cluster finding based on AliITSClusterFinderSDD
1123 //------------------------------------------------------------
1124 static AliITS *its=(AliITS*)gAlice->GetModule("ITS");
1125 static TClonesArray *points=its->RecPoints();
1126 static AliITSresponseSDD *resp=
1127 (AliITSresponseSDD *)its->DetType(1)->GetResponseModel();
1128 static AliITSsegmentationSDD *seg=
1129 (AliITSsegmentationSDD *)its->DetType(1)->GetSegmentationModel();
1130 static AliITSClusterFinderSDD
1131 cf(seg,resp,(TClonesArray*)digits,its->ClustersAddress(1));
1132
1133 cf.FindRawClusters(fI);
1cca57bf 1134 Int_t nc=points->GetEntriesFast();
1135 while (nc--) { //To be consistent with the SSD cluster charges
1136 AliITSRecPoint *p=(AliITSRecPoint*)points->UncheckedAt(nc);
1137 p->SetQ(p->GetQ/12.);
1138 }
1139 RecPoints2Clusters(points, fI, clusters);
7f4044f0 1140 its->ResetClusters(1);
1141 its->ResetRecPoints();
1142
1143}
1144
1145void AliITSclustererV2::
1146FindClustersSSD(const TClonesArray *digits, TClonesArray *clusters) {
1147 //------------------------------------------------------------
1148 // Actual SSD cluster finding based on AliITSClusterFinderSSD
1149 //------------------------------------------------------------
1150 static AliITS *its=(AliITS*)gAlice->GetModule("ITS");
1151 static TClonesArray *points=its->RecPoints();
1152 static AliITSsegmentationSSD *seg=
1153 (AliITSsegmentationSSD *)its->DetType(2)->GetSegmentationModel();
1154 static AliITSClusterFinderSSD cf(seg,(TClonesArray*)digits);
1155
1156 cf.FindRawClusters(fI);
1cca57bf 1157 RecPoints2Clusters(points, fI, clusters);
7f4044f0 1158 its->ResetRecPoints();
1159
1160}
1161
1162#endif