| c0a16418 |
1 | /************************************************************************** |
| 2 | * Copyright(c) 1998-1999, 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 | |
| 16 | /* $Id$ */ |
| 17 | |
| 3d1463c8 |
18 | //----------------------------------------------------------------------------- |
| c0a16418 |
19 | /// \class AliMUONClusterFinderMLEM |
| 20 | /// |
| 21 | /// Clusterizer class based on the Expectation-Maximization algorithm |
| 22 | /// |
| 23 | /// Pre-clustering is handled by AliMUONPreClusterFinder |
| 24 | /// From a precluster a pixel array is built, and from this pixel array |
| 25 | /// a list of clusters is output (using AliMUONClusterSplitterMLEM). |
| 26 | /// |
| 27 | /// \author Laurent Aphecetche (for the "new" C++ structure) and |
| 28 | /// Alexander Zinchenko, JINR Dubna, for the hardcore of it ;-) |
| 3d1463c8 |
29 | //----------------------------------------------------------------------------- |
| c0a16418 |
30 | |
| 9edefa04 |
31 | #include "AliMUONClusterFinderMLEM.h" |
| c0a16418 |
32 | #include "AliLog.h" |
| 33 | #include "AliMUONCluster.h" |
| 34 | #include "AliMUONClusterSplitterMLEM.h" |
| 3887d11e |
35 | #include "AliMUONVDigit.h" |
| c0a16418 |
36 | #include "AliMUONPad.h" |
| 37 | #include "AliMUONPreClusterFinder.h" |
| 38 | #include "AliMpPad.h" |
| 39 | #include "AliMpVPadIterator.h" |
| 40 | #include "AliMpVSegmentation.h" |
| 41 | #include "AliRunLoader.h" |
| 3887d11e |
42 | #include "AliMUONVDigitStore.h" |
| a6435fb4 |
43 | #include <Riostream.h> |
| 44 | #include <TH2.h> |
| 45 | #include <TMinuit.h> |
| 46 | #include <TCanvas.h> |
| 47 | #include <TStopwatch.h> |
| 48 | #include <TMath.h> |
| a1e17193 |
49 | #include <TROOT.h> |
| b1a19e07 |
50 | //#include "AliCodeTimer.h" |
| a6435fb4 |
51 | |
| c0a16418 |
52 | /// \cond CLASSIMP |
| 53 | ClassImp(AliMUONClusterFinderMLEM) |
| 54 | /// \endcond |
| 55 | |
| 56 | const Double_t AliMUONClusterFinderMLEM::fgkZeroSuppression = 6; // average zero suppression value |
| 57 | const Double_t AliMUONClusterFinderMLEM::fgkSaturation = 3000; // average saturation level |
| 58 | const Double_t AliMUONClusterFinderMLEM::fgkDistancePrecision = 1e-6; // (cm) used to check overlaps and so on |
| 59 | const TVector2 AliMUONClusterFinderMLEM::fgkIncreaseSize(-AliMUONClusterFinderMLEM::fgkDistancePrecision,-AliMUONClusterFinderMLEM::fgkDistancePrecision); |
| 60 | const TVector2 AliMUONClusterFinderMLEM::fgkDecreaseSize(AliMUONClusterFinderMLEM::fgkDistancePrecision,AliMUONClusterFinderMLEM::fgkDistancePrecision); |
| 61 | |
| 62 | TMinuit* AliMUONClusterFinderMLEM::fgMinuit = 0x0; |
| 63 | |
| 64 | //_____________________________________________________________________________ |
| b1a19e07 |
65 | AliMUONClusterFinderMLEM::AliMUONClusterFinderMLEM(Bool_t plot, AliMUONVClusterFinder* clusterFinder) |
| c0a16418 |
66 | : AliMUONVClusterFinder(), |
| b1a19e07 |
67 | fPreClusterFinder(clusterFinder), |
| c0a16418 |
68 | fPreCluster(0x0), |
| 69 | fClusterList(), |
| 70 | fEventNumber(0), |
| 71 | fDetElemId(-1), |
| 72 | fClusterNumber(0), |
| 73 | fZpad(0.0), |
| 74 | fReco(1), |
| 75 | fCathBeg(0), |
| 76 | fPixArray(new TObjArray(20)), |
| 9bbd7f60 |
77 | fDebug(0), |
| c0a16418 |
78 | fPlot(plot), |
| 79 | fTimers(new TObjArray(kLast)), |
| 80 | fSplitter(0x0), |
| 81 | fNClusters(0), |
| 82 | fNAddVirtualPads(0) |
| 83 | { |
| 84 | /// Constructor |
| 85 | |
| 86 | fSegmentation[1] = fSegmentation[0] = 0x0; |
| 87 | |
| 88 | fPadBeg[0] = fPadBeg[1] = fCathBeg; |
| 89 | |
| 90 | if (!fgMinuit) fgMinuit = new TMinuit(8); |
| 91 | |
| 92 | fTimers->SetOwner(kTRUE); |
| 93 | |
| 94 | for ( Int_t i = 0; i < kLast; ++i ) |
| 95 | { |
| 96 | TStopwatch* t = new TStopwatch; |
| 97 | fTimers->AddLast(new TStopwatch); |
| 98 | t->Start(kTRUE); |
| 99 | t->Stop(); |
| 100 | } |
| 9bbd7f60 |
101 | if (fPlot) fDebug = 1; |
| c0a16418 |
102 | } |
| 103 | |
| 104 | //_____________________________________________________________________________ |
| 105 | AliMUONClusterFinderMLEM::~AliMUONClusterFinderMLEM() |
| 106 | { |
| 107 | /// Destructor |
| 108 | delete fgMinuit; fgMinuit = 0; delete fPixArray; fPixArray = 0; |
| 109 | // delete fDraw; |
| 110 | delete fPreClusterFinder; |
| 111 | for ( Int_t i = 0; i < kLast; ++i ) |
| 112 | { |
| 113 | AliInfo(Form("Timer %d",i)); |
| 114 | Timer(i)->Print(); |
| 115 | } |
| 116 | delete fTimers; |
| 117 | delete fSplitter; |
| 118 | AliInfo(Form("Total clusters %d AddVirtualPad needed %d", |
| 119 | fNClusters,fNAddVirtualPads)); |
| 120 | } |
| 121 | |
| 122 | //_____________________________________________________________________________ |
| 123 | Bool_t |
| 124 | AliMUONClusterFinderMLEM::Prepare(const AliMpVSegmentation* segmentations[2], |
| 3887d11e |
125 | const AliMUONVDigitStore& digitStore) |
| c0a16418 |
126 | { |
| 127 | /// Prepare for clustering |
| 128 | |
| 129 | for ( Int_t i = 0; i < 2; ++i ) |
| 130 | { |
| 131 | fSegmentation[i] = segmentations[i]; |
| 132 | } |
| 133 | |
| 134 | // Find out the DetElemId |
| 135 | fDetElemId = -1; |
| 136 | |
| 3887d11e |
137 | TIter next(digitStore.CreateIterator()); |
| 138 | AliMUONVDigit* d = static_cast<AliMUONVDigit*>(next()); |
| 139 | |
| 140 | if (d) |
| c0a16418 |
141 | { |
| 3887d11e |
142 | fDetElemId = d->DetElemId(); |
| c0a16418 |
143 | } |
| 144 | |
| 145 | if ( fDetElemId < 0 ) |
| 146 | { |
| 147 | AliWarning("Could not find DE. Probably no digits at all ?"); |
| 148 | return kFALSE; |
| 149 | } |
| 150 | |
| 151 | delete fSplitter; |
| 152 | fSplitter = new AliMUONClusterSplitterMLEM(fDetElemId,fPixArray); |
| 9bbd7f60 |
153 | fSplitter->SetDebug(fDebug); |
| c0a16418 |
154 | |
| 155 | // find out current event number, and reset the cluster number |
| 156 | fEventNumber = AliRunLoader::GetRunLoader()->GetEventNumber(); |
| 157 | fClusterNumber = -1; |
| 158 | fClusterList.Delete(); |
| 159 | |
| b1a19e07 |
160 | AliDebug(3,Form("EVT %d DE %d",fEventNumber,fDetElemId)); |
| c0a16418 |
161 | |
| 3887d11e |
162 | return fPreClusterFinder->Prepare(segmentations,digitStore); |
| c0a16418 |
163 | } |
| 164 | |
| 165 | //_____________________________________________________________________________ |
| 166 | AliMUONCluster* |
| 167 | AliMUONClusterFinderMLEM::NextCluster() |
| 168 | { |
| 169 | /// Return next cluster |
| 170 | |
| c0a16418 |
171 | // if the list of clusters is not void, pick one from there |
| 9bbd7f60 |
172 | TObject* o = fClusterList.At(++fClusterNumber); |
| 173 | if ( o != 0x0 ) return static_cast<AliMUONCluster*>(o); |
| c0a16418 |
174 | |
| 175 | //FIXME : at this point, must check whether we've used all the digits |
| 176 | //from precluster : if not, let the preclustering know about those unused |
| 177 | //digits, so it can reuse them |
| 178 | |
| 179 | // if the cluster list is exhausted, we need to go to the next |
| 180 | // pre-cluster and treat it |
| 181 | |
| 182 | fPreCluster = fPreClusterFinder->NextCluster(); |
| 183 | |
| 184 | if (!fPreCluster) |
| 185 | { |
| 186 | // we are done |
| 187 | return 0x0; |
| 188 | } |
| 189 | |
| b1a19e07 |
190 | // AliCodeTimerAuto("Excluding preclustering") |
| 191 | |
| 192 | |
| c0a16418 |
193 | fClusterList.Delete(); // reset the list of clusters for this pre-cluster |
| 9bbd7f60 |
194 | fClusterNumber = -1; //AZ |
| c0a16418 |
195 | |
| 196 | WorkOnPreCluster(); |
| 197 | |
| 198 | // WorkOnPreCluster may have used only part of the pads, so we check that |
| 199 | // now, and let the unused pads be reused by the preclustering... |
| 200 | |
| 201 | for ( Int_t i = 0; i < fPreCluster->Multiplicity(); ++i ) |
| 202 | { |
| 203 | AliMUONPad* pad = fPreCluster->Pad(i); |
| 204 | if ( !pad->IsUsed() ) |
| 205 | { |
| 206 | fPreClusterFinder->UsePad(*pad); |
| 207 | } |
| 208 | } |
| 209 | |
| 210 | return NextCluster(); |
| 211 | } |
| 212 | |
| 213 | //_____________________________________________________________________________ |
| 214 | Bool_t |
| 215 | AliMUONClusterFinderMLEM::WorkOnPreCluster() |
| 216 | { |
| 217 | /// Starting from a precluster, builds a pixel array, and then |
| 218 | /// extract clusters from this array |
| 219 | |
| 9bbd7f60 |
220 | // Set saturation flag - it is not set if working directly with MC digits (w/out |
| 221 | // creating raw data) !!! |
| 222 | for (Int_t j = 0; j < fPreCluster->Multiplicity(); ++j) { |
| 223 | AliMUONPad* pad = fPreCluster->Pad(j); |
| 224 | if (pad->IsSaturated()) break; |
| 225 | if (pad->Charge() > fgkSaturation-1) pad->SetSaturated(kTRUE); //FIXME : remove usage of fgkSaturation |
| 226 | } |
| 227 | |
| 228 | if (fDebug) { |
| 229 | cout << " *** Event # " << AliRunLoader::GetRunLoader()->GetEventNumber() |
| 230 | << " det. elem.: " << fDetElemId << endl; |
| 231 | for (Int_t j=0; j<fPreCluster->Multiplicity(); ++j) { |
| 232 | AliMUONPad* pad = fPreCluster->Pad(j); |
| 233 | printf(" bbb %3d %1d %8.4f %8.4f %8.4f %8.4f %6.1f %3d %3d %2d %1d %1d \n", |
| 234 | j, pad->Cathode(), pad->Coord(0), pad->Coord(1), pad->DX()*2, pad->DY()*2, |
| 235 | pad->Charge(), pad->Ix(), pad->Iy(), pad->Status(), pad->IsReal(), pad->IsSaturated()); |
| 236 | } |
| 237 | } |
| 238 | |
| c0a16418 |
239 | AliMUONCluster* cluster = CheckPrecluster(*fPreCluster); |
| c0a16418 |
240 | if (!cluster) return kFALSE; |
| 9bbd7f60 |
241 | |
| c0a16418 |
242 | BuildPixArray(*cluster); |
| 243 | |
| 244 | if ( fPixArray->GetLast() < 0 ) |
| 245 | { |
| 246 | AliDebug(1,"No pixel for the above cluster"); |
| 247 | delete cluster; |
| 248 | return kFALSE; |
| 249 | } |
| 250 | |
| 251 | // Use MLEM for cluster finder |
| 252 | Int_t nMax = 1, localMax[100], maxPos[100]; |
| 253 | Double_t maxVal[100]; |
| 254 | |
| 255 | if (cluster->Multiplicity() > 50) |
| 256 | { |
| 257 | nMax = FindLocalMaxima(fPixArray, localMax, maxVal); |
| 258 | } |
| 259 | |
| 260 | if (nMax > 1) |
| 261 | { |
| 262 | TMath::Sort(nMax, maxVal, maxPos, kTRUE); // in decreasing order |
| 263 | } |
| 264 | |
| 265 | Int_t iSimple = 0, nInX = -1, nInY; |
| 266 | |
| 267 | PadsInXandY(*cluster,nInX, nInY); |
| 268 | |
| 269 | if (nMax == 1 && nInX < 4 && nInY < 4) |
| 270 | { |
| 271 | iSimple = 1; //1; // simple cluster |
| 272 | } |
| 273 | |
| 274 | for (Int_t i=0; i<nMax; ++i) |
| 275 | { |
| 276 | if (nMax > 1) |
| 277 | { |
| 278 | FindCluster(*cluster,localMax, maxPos[i]); |
| 279 | } |
| 280 | Timer(kMainLoop)->Start(kFALSE); |
| 281 | MainLoop(*cluster,iSimple); |
| 282 | Timer(kMainLoop)->Stop(); |
| 283 | if (i < nMax-1) |
| 284 | { |
| 285 | for (Int_t j=0; j<cluster->Multiplicity(); ++j) |
| 286 | { |
| 287 | AliMUONPad* pad = cluster->Pad(j); |
| 288 | if ( pad->Status() == 0 ) continue; // pad charge was not modified |
| 289 | pad->SetStatus(0); |
| 290 | pad->RevertCharge(); // use backup charge value |
| 291 | } |
| 292 | } |
| 293 | } // for (Int_t i=0; i<nMax; |
| 294 | if (nMax > 1) ((TH2D*) gROOT->FindObject("anode"))->Delete(); |
| 295 | TH2D *mlem = (TH2D*) gROOT->FindObject("mlem"); |
| 296 | if (mlem) mlem->Delete(); |
| 297 | delete cluster; |
| 298 | return kTRUE; |
| 299 | } |
| 300 | |
| 301 | //_____________________________________________________________________________ |
| 302 | Bool_t |
| 303 | AliMUONClusterFinderMLEM::Overlap(const AliMUONPad& pad, const AliMUONPad& pixel) |
| 304 | { |
| 305 | /// Check if the pad and the pixel overlaps |
| 306 | |
| 307 | // make a fake pad from the pixel |
| 308 | AliMUONPad tmp(pad.DetElemId(),pad.Cathode(),pad.Ix(),pad.Iy(), |
| 309 | pixel.Coord(0),pixel.Coord(1), |
| 310 | pixel.Size(0),pixel.Size(1),0); |
| 311 | |
| 312 | return AliMUONPad::AreOverlapping(pad,tmp,fgkDecreaseSize); |
| 313 | } |
| 314 | |
| 315 | //_____________________________________________________________________________ |
| 316 | AliMUONCluster* |
| 317 | AliMUONClusterFinderMLEM::CheckPrecluster(const AliMUONCluster& origCluster) |
| 318 | { |
| 319 | /// Check precluster in order to attempt to simplify it (mostly for |
| 320 | /// two-cathode preclusters) |
| 321 | |
| 322 | if (origCluster.Multiplicity()==1) |
| 323 | { |
| 324 | // Disregard one-pad clusters (leftovers from splitting) |
| 325 | return 0x0; |
| 326 | } |
| 327 | |
| 328 | Timer(kCheckPreCluster)->Start(kFALSE); |
| 329 | |
| 330 | |
| 331 | AliMUONCluster* cluster = static_cast<AliMUONCluster*>(origCluster.Clone()); |
| 332 | |
| c0a16418 |
333 | AliDebug(2,"Start of CheckPreCluster="); |
| b1a19e07 |
334 | // StdoutToAliDebug(2,cluster->Print("full")); |
| c0a16418 |
335 | |
| 336 | // Check if one-cathode precluster |
| 337 | Int_t i1 = cluster->Multiplicity(0) ? 0 : 1; |
| 338 | Int_t i2 = cluster->Multiplicity(1) ? 1 : 0; |
| 339 | |
| 340 | AliMUONCluster* rv(0x0); |
| 341 | |
| 342 | if (i1 != i2) |
| 343 | { |
| 344 | rv = CheckPreclusterTwoCathodes(cluster); |
| 345 | } |
| 346 | else |
| 347 | { |
| 348 | rv = CheckPreclusterOneCathode(cluster); |
| 349 | } |
| 350 | Timer(kCheckPreCluster)->Stop(); |
| 351 | return rv; |
| 352 | } |
| 353 | |
| 354 | //_____________________________________________________________________________ |
| 355 | AliMUONCluster* |
| 356 | AliMUONClusterFinderMLEM::CheckPreclusterOneCathode(AliMUONCluster* cluster) |
| 357 | { |
| 358 | /// Check single-cathode precluster |
| 359 | AliWarning("Reimplement me!"); |
| b1a19e07 |
360 | AliDebug(2,"End of CheckPreClusterOneCathode="); |
| 361 | // StdoutToAliDebug(2,cluster->Print("full")); |
| c0a16418 |
362 | |
| 363 | return cluster; |
| 364 | } |
| 365 | |
| 366 | //_____________________________________________________________________________ |
| 367 | AliMUONCluster* |
| 368 | AliMUONClusterFinderMLEM::CheckPreclusterTwoCathodes(AliMUONCluster* cluster) |
| 369 | { |
| 71a2d3aa |
370 | /// Check two-cathode cluster |
| c0a16418 |
371 | |
| 372 | Int_t i1 = cluster->Multiplicity(0) ? 0 : 1; |
| 373 | Int_t i2 = cluster->Multiplicity(1) ? 1 : 0; |
| 374 | |
| 375 | Int_t npad = cluster->Multiplicity(); |
| 376 | Int_t* flags = new Int_t[npad]; |
| 377 | memset(flags,0,npad*sizeof(Int_t)); |
| 378 | |
| 379 | // Check pad overlaps |
| 380 | for ( Int_t i=0; i<npad; ++i) |
| 381 | { |
| 382 | AliMUONPad* padi = cluster->Pad(i); |
| 383 | if ( padi->Cathode() != i1 ) continue; |
| 384 | for (Int_t j=i+1; j<npad; ++j) |
| 385 | { |
| 386 | AliMUONPad* padj = cluster->Pad(j); |
| 387 | if ( padj->Cathode() != i2 ) continue; |
| 388 | if ( !AliMUONPad::AreOverlapping(*padi,*padj,fgkDecreaseSize) ) continue; |
| 389 | flags[i] = flags[j] = 1; // mark overlapped pads |
| 390 | } |
| 391 | } |
| 392 | |
| 393 | // Check if all pads overlap |
| 394 | Int_t nFlags=0; |
| 395 | for (Int_t i=0; i<npad; ++i) |
| 396 | { |
| 397 | if (flags[i]) continue; |
| 398 | ++nFlags; |
| 399 | } |
| 400 | |
| 401 | if (nFlags > 0) |
| 402 | { |
| 403 | // not all pads overlap. |
| 9bbd7f60 |
404 | if (fDebug) cout << " nFlags: " << nFlags << endl; |
| 405 | TObjArray toBeRemoved; |
| c0a16418 |
406 | for (Int_t i=0; i<npad; ++i) |
| 407 | { |
| 408 | AliMUONPad* pad = cluster->Pad(i); |
| 409 | if (flags[i]) continue; |
| 410 | Int_t cath = pad->Cathode(); |
| 411 | Int_t cath1 = TMath::Even(cath); |
| 412 | // Check for edge effect (missing pads on the _other_ cathode) |
| 413 | AliMpPad mpPad = fSegmentation[cath1]->PadByPosition(pad->Position(),kFALSE); |
| 414 | if (!mpPad.IsValid()) continue; |
| 9bbd7f60 |
415 | if (nFlags == 1 && pad->Charge() < fgkZeroSuppression * 3) continue; |
| c0a16418 |
416 | AliDebug(2,Form("Releasing the following pad : de,cath,ix,iy %d,%d,%d,%d charge %e", |
| 417 | fDetElemId,pad->Cathode(),pad->Ix(),pad->Iy(),pad->Charge())); |
| 9bbd7f60 |
418 | toBeRemoved.AddLast(pad); |
| 419 | //AZ cluster->RemovePad(pad); |
| c0a16418 |
420 | fPreCluster->Pad(i)->Release(); |
| 9bbd7f60 |
421 | //AZ --npad; |
| 422 | } |
| 423 | for ( Int_t i = 0; i <= toBeRemoved.GetLast(); ++i ) |
| 424 | { |
| 425 | cluster->RemovePad(static_cast<AliMUONPad*>(toBeRemoved.At(i))); |
| c0a16418 |
426 | } |
| 427 | } |
| 428 | |
| 429 | // Check correlations of cathode charges |
| 9bbd7f60 |
430 | if ( !cluster->IsSaturated() && cluster->ChargeAsymmetry() > 1 ) |
| c0a16418 |
431 | { |
| 432 | // big difference |
| 433 | Int_t cathode = cluster->MaxRawChargeCathode(); |
| 434 | Int_t imin(0); |
| 435 | Int_t imax(0); |
| 436 | Double_t cmax(0); |
| 437 | Double_t cmin(1E9); |
| 438 | |
| 439 | // get min and max pad charges on the cathode opposite to the |
| 440 | // max pad (given by MaxRawChargeCathode()) |
| 441 | // |
| 442 | for ( Int_t i = 0; i < cluster->Multiplicity(); ++i ) |
| 443 | { |
| 444 | AliMUONPad* pad = cluster->Pad(i); |
| 445 | if ( pad->Cathode() != cathode || !pad->IsReal() ) |
| 446 | { |
| 447 | // only consider pads in the opposite cathode, and |
| 448 | // onyl consider real pads (i.e. exclude the virtual ones) |
| 449 | continue; |
| 450 | } |
| 451 | if ( pad->Charge() < cmin ) |
| 452 | { |
| 453 | cmin = pad->Charge(); |
| 454 | imin = i; |
| 455 | } |
| 456 | if ( pad->Charge() > cmax ) |
| 457 | { |
| 458 | cmax = pad->Charge(); |
| 459 | imax = i; |
| 460 | } |
| 461 | } |
| 462 | AliDebug(2,Form("Pad imin,imax %d,%d cmin,cmax %e,%e", |
| 463 | imin,imax,cmin,cmax)); |
| 464 | // |
| 465 | // arrange pads according to their distance to the max, normalized |
| 466 | // to the pad size |
| 467 | Double_t* dist = new Double_t[cluster->Multiplicity()]; |
| 468 | Double_t dxMin(1E9); |
| 469 | Double_t dyMin(1E9); |
| 470 | Double_t dmin(0); |
| 471 | |
| 472 | AliMUONPad* padmax = cluster->Pad(imax); |
| 473 | |
| 474 | for ( Int_t i = 0; i < cluster->Multiplicity(); ++i ) |
| 475 | { |
| 476 | dist[i] = 0.0; |
| 477 | if ( i == imax) continue; |
| 478 | AliMUONPad* pad = cluster->Pad(i); |
| 479 | if ( pad->Cathode() != cathode || !pad->IsReal() ) continue; |
| 480 | Double_t dx = (pad->X()-padmax->X())/padmax->DX()/2.0; |
| 481 | Double_t dy = (pad->Y()-padmax->Y())/padmax->DY()/2.0; |
| 482 | dist[i] = TMath::Sqrt(dx*dx+dy*dy); |
| 483 | if ( i == imin ) |
| 484 | { |
| 485 | dmin = dist[i] + 1E-3; // distance to the pad with minimum charge |
| 486 | dxMin = dx; |
| 487 | dyMin = dy; |
| 488 | } |
| 489 | } |
| 490 | |
| 491 | TMath::Sort(cluster->Multiplicity(),dist,flags,kFALSE); // in ascending order |
| 492 | Double_t xmax(-1); |
| 493 | TObjArray toBeRemoved; |
| 494 | |
| 495 | for ( Int_t i = 0; i < cluster->Multiplicity(); ++i ) |
| 496 | { |
| 497 | Int_t indx = flags[i]; |
| 498 | AliMUONPad* pad = cluster->Pad(indx); |
| 499 | if ( pad->Cathode() != cathode || !pad->IsReal() ) continue; |
| 500 | if ( dist[indx] > dmin ) |
| 501 | { |
| 502 | // farther than the minimum pad |
| 503 | Double_t dx = (pad->X()-padmax->X())/padmax->DX()/2.0; |
| 504 | Double_t dy = (pad->Y()-padmax->Y())/padmax->DY()/2.0; |
| 505 | dx *= dxMin; |
| 506 | dy *= dyMin; |
| 507 | if (dx >= 0 && dy >= 0) continue; |
| 508 | if (TMath::Abs(dx) > TMath::Abs(dy) && dx >= 0) continue; |
| 509 | if (TMath::Abs(dy) > TMath::Abs(dx) && dy >= 0) continue; |
| 510 | } |
| 511 | if ( pad->Charge() <= cmax || TMath::Abs(dist[indx]-xmax) < 1E-3 ) |
| 512 | { |
| 513 | // release pad |
| 514 | if (TMath::Abs(dist[indx]-xmax) < 1.e-3) |
| 515 | { |
| 516 | cmax = TMath::Max(pad->Charge(),cmax); |
| 517 | } |
| 518 | else |
| 519 | { |
| 520 | cmax = pad->Charge(); |
| 521 | } |
| 522 | xmax = dist[indx]; |
| 523 | AliDebug(2,Form("Releasing the following pad : de,cath,ix,iy %d,%d,%d,%d charge %e", |
| 524 | fDetElemId,pad->Cathode(),pad->Ix(),pad->Iy(), |
| 525 | pad->Charge())); |
| 526 | |
| 527 | toBeRemoved.AddLast(pad); |
| 528 | fPreCluster->Pad(indx)->Release(); |
| 529 | } |
| 530 | } |
| 531 | for ( Int_t i = 0; i <= toBeRemoved.GetLast(); ++i ) |
| 532 | { |
| 533 | cluster->RemovePad(static_cast<AliMUONPad*>(toBeRemoved.At(i))); |
| 534 | } |
| 535 | delete[] dist; |
| 536 | } |
| 537 | |
| 538 | delete[] flags; |
| 539 | |
| 540 | AliDebug(2,"End of CheckPreClusterTwoCathodes="); |
| b1a19e07 |
541 | // StdoutToAliDebug(2,cluster->Print("full")); |
| c0a16418 |
542 | |
| 543 | return cluster; |
| 544 | } |
| 545 | |
| 546 | //_____________________________________________________________________________ |
| 547 | void |
| 548 | AliMUONClusterFinderMLEM::CheckOverlaps() |
| 549 | { |
| 550 | /// For debug only : check if some pixels overlap... |
| 551 | |
| 552 | Int_t nPix = fPixArray->GetLast()+1; |
| 553 | Int_t dummy(0); |
| 554 | |
| 555 | for ( Int_t i = 0; i < nPix; ++i ) |
| 556 | { |
| 557 | AliMUONPad* pixelI = Pixel(i); |
| 558 | AliMUONPad pi(dummy,dummy,dummy,dummy, |
| 559 | pixelI->Coord(0),pixelI->Coord(1), |
| 560 | pixelI->Size(0),pixelI->Size(1),0.0); |
| 561 | |
| 562 | for ( Int_t j = i+1; j < nPix; ++j ) |
| 563 | { |
| 564 | AliMUONPad* pixelJ = Pixel(j); |
| 565 | AliMUONPad pj(dummy,dummy,dummy,dummy, |
| 566 | pixelJ->Coord(0),pixelJ->Coord(1), |
| 567 | pixelJ->Size(0),pixelJ->Size(1),0.0); |
| 568 | AliMpArea area; |
| 569 | |
| 570 | if ( AliMUONPad::AreOverlapping(pi,pj,fgkDecreaseSize,area) ) |
| 571 | { |
| 572 | AliInfo(Form("The following 2 pixels (%d and %d) overlap !",i,j)); |
| 573 | StdoutToAliInfo(pixelI->Print(); |
| 574 | cout << " Surface = " << pixelI->Size(0)*pixelI->Size(1)*4 << endl; |
| 575 | pixelJ->Print(); |
| 576 | cout << " Surface = " << pixelJ->Size(0)*pixelJ->Size(1)*4 << endl; |
| 577 | cout << " Area surface = " << area.Dimensions().X()*area.Dimensions().Y()*4 << endl; |
| 578 | cout << "-------" << endl; |
| 579 | ); |
| 580 | |
| 581 | } |
| 582 | } |
| 583 | } |
| 584 | } |
| 585 | |
| 586 | //_____________________________________________________________________________ |
| 587 | void AliMUONClusterFinderMLEM::BuildPixArray(AliMUONCluster& cluster) |
| 588 | { |
| 589 | /// Build pixel array for MLEM method |
| 590 | |
| 591 | Int_t npad = cluster.Multiplicity(); |
| 592 | if (npad<=0) |
| 593 | { |
| 594 | AliWarning("Got no pad at all ?!"); |
| 595 | } |
| 596 | |
| 597 | fPixArray->Delete(); |
| 598 | |
| 599 | if ( !cluster.Multiplicity(0) || !cluster.Multiplicity(1) ) |
| 600 | { |
| 601 | BuildPixArrayOneCathode(cluster); |
| 602 | } |
| 603 | else |
| 604 | { |
| 605 | BuildPixArrayTwoCathodes(cluster); |
| 606 | } |
| 607 | |
| 608 | fPixArray->Sort(); // FIXME : not really needed, only to compare with ClusterFinderAZ |
| 609 | |
| 610 | Int_t nPix = fPixArray->GetLast()+1; |
| 611 | |
| b1a19e07 |
612 | AliDebug(2,Form("nPix after BuildPixArray=%d",nPix)); |
| c0a16418 |
613 | |
| 614 | Double_t xPadMin(1E9); |
| 615 | Double_t yPadMin(1E9); |
| 616 | |
| 617 | for ( Int_t i = 0; i < cluster.Multiplicity(); ++i ) |
| 618 | { |
| 619 | AliMUONPad* pad = cluster.Pad(i); |
| 620 | xPadMin = TMath::Min (xPadMin, pad->DX()); |
| 621 | yPadMin = TMath::Min (yPadMin, pad->DY()); |
| 622 | } |
| 623 | |
| 624 | Double_t wxmin(1E9); |
| 625 | Double_t wymin(1E9); |
| 626 | |
| 627 | for ( Int_t i = 0; i < nPix; ++i ) |
| 628 | { |
| 629 | AliMUONPad* pixPtr = Pixel(i); |
| 630 | wxmin = TMath::Min(wxmin, pixPtr->Size(0)); |
| 631 | wymin = TMath::Min(wymin, pixPtr->Size(1)); |
| 632 | } |
| 633 | |
| 634 | wxmin = TMath::Abs (wxmin - xPadMin/2) > 0.001 ? xPadMin : xPadMin / 2; |
| 635 | wymin = TMath::Abs (wymin - yPadMin/2) > 0.001 ? yPadMin : yPadMin / 2; |
| 636 | |
| 637 | // Check if small pixel X-size |
| 638 | AdjustPixel(cluster,wxmin, 0); |
| 639 | // Check if small pixel Y-size |
| 640 | AdjustPixel(cluster,wymin, 1); |
| 641 | // Check if large pixel size |
| 642 | AdjustPixel(wxmin, wymin); |
| 643 | |
| 644 | // Remove discarded pixels |
| 645 | for (Int_t i=0; i<nPix; ++i) |
| 646 | { |
| 647 | AliMUONPad* pixPtr = Pixel(i); |
| 648 | if (pixPtr->Charge() < 1) |
| 649 | { |
| 650 | AliDebug(2,Form("Removing pixel %d with charge<1 : ",i)); |
| b1a19e07 |
651 | // StdoutToAliDebug(2,pixPtr->Print()); |
| c0a16418 |
652 | RemovePixel(i); |
| 653 | } |
| 654 | } |
| 655 | |
| 656 | fPixArray->Compress(); |
| 657 | nPix = fPixArray->GetEntriesFast(); |
| 658 | |
| b1a19e07 |
659 | AliDebug(2,Form("nPix after AdjustPixel=%d",nPix)); |
| c0a16418 |
660 | |
| 661 | if ( nPix > cluster.Multiplicity() ) |
| 662 | { |
| b1a19e07 |
663 | AliDebug(2,Form("Will trim number of pixels to number of pads")); |
| c0a16418 |
664 | |
| 665 | // Too many pixels - sort and remove pixels with the lowest signal |
| 666 | fPixArray->Sort(); |
| 667 | for ( Int_t i = cluster.Multiplicity(); i<nPix; ++i ) |
| 668 | { |
| 669 | RemovePixel(i); |
| 670 | } |
| 671 | fPixArray->Compress(); |
| 672 | nPix = fPixArray->GetEntriesFast(); |
| 673 | } // if (nPix > npad) |
| 674 | |
| 675 | // StdoutToAliDebug(2,cout << "End of BuildPixelArray:" << endl; |
| 676 | // fPixArray->Print();); |
| b1a19e07 |
677 | // CheckOverlaps();//FIXME : this is for debug only. Remove it. |
| c0a16418 |
678 | } |
| 679 | |
| 680 | //_____________________________________________________________________________ |
| 681 | void AliMUONClusterFinderMLEM::BuildPixArrayOneCathode(AliMUONCluster& cluster) |
| 682 | { |
| 683 | /// From a single-cathode cluster, build the pixel array |
| 684 | |
| b1a19e07 |
685 | AliDebug(2,Form("cluster.Multiplicity=%d",cluster.Multiplicity())); |
| c0a16418 |
686 | |
| 687 | for ( Int_t j=0; j<cluster.Multiplicity(); ++j) |
| 688 | { |
| 689 | AliMUONPad* pad = cluster.Pad(j); |
| 690 | AliMUONPad* pixPtr = new AliMUONPad(pad->Position(),pad->Dimensions(), |
| 691 | pad->Charge()); |
| 692 | fPixArray->Add(pixPtr); |
| 693 | } |
| 694 | } |
| 695 | |
| 696 | //_____________________________________________________________________________ |
| 697 | void AliMUONClusterFinderMLEM::BuildPixArrayTwoCathodes(AliMUONCluster& cluster) |
| 698 | { |
| 699 | /// From a two-cathodes cluster, build the pixel array |
| 700 | |
| b1a19e07 |
701 | AliDebug(2,Form("cluster.Multiplicity=%d",cluster.Multiplicity())); |
| c0a16418 |
702 | |
| 703 | Int_t i1 = cluster.Pad(0)->Cathode(); |
| 704 | Int_t i2 = TMath::Even(i1); |
| 705 | |
| 706 | for ( Int_t i = 0; i < cluster.Multiplicity(); ++i) |
| 707 | { |
| 708 | AliMUONPad* padi = cluster.Pad(i); |
| 709 | if (padi->Cathode() != i1) continue; |
| 710 | |
| 711 | for ( Int_t j = 1; j < cluster.Multiplicity(); ++j) |
| 712 | { |
| 713 | AliMUONPad* padj = cluster.Pad(j); |
| 714 | if (padj->Cathode() != i2) continue; |
| 715 | |
| 716 | AliMpArea overlap; |
| 717 | |
| 718 | if ( AliMUONPad::AreOverlapping(*padi,*padj,fgkDecreaseSize,overlap) ) |
| 719 | { |
| 720 | AliMUONPad* pixPtr = new AliMUONPad(overlap.Position(), |
| 721 | overlap.Dimensions(), |
| 722 | TMath::Min(padi->Charge(),padj->Charge())); |
| 723 | if ( ( padi->Charge() <= padj->Charge() && padi->IsSaturated() ) || |
| 724 | ( padj->Charge() < padi->Charge() && padj->IsSaturated() ) ) |
| 725 | { |
| 726 | // if smallest charge of the 2 pads is already above saturation, then |
| 727 | // the pixel is saturated... |
| 728 | pixPtr->SetSaturated(kTRUE); |
| 729 | } |
| 730 | pixPtr->SetReal(kFALSE); |
| 731 | fPixArray->Add(pixPtr); |
| 732 | } |
| 733 | } |
| 734 | } |
| 735 | } |
| 736 | |
| 737 | //_____________________________________________________________________________ |
| 738 | void AliMUONClusterFinderMLEM::AdjustPixel(AliMUONCluster& cluster, |
| 739 | Float_t width, Int_t ixy) |
| 740 | { |
| 741 | /// Check if some pixels have small size (adjust if necessary) |
| 742 | |
| 743 | AliDebug(2,Form("width=%e ixy=%d",width,ixy)); |
| 744 | |
| 745 | AliMUONPad *pixPtr, *pixPtr1 = 0; |
| 746 | Int_t ixy1 = TMath::Even(ixy); |
| 747 | Int_t nPix = fPixArray->GetEntriesFast(); |
| 748 | |
| 749 | for (Int_t i=0; i<nPix; i++) |
| 750 | { |
| 751 | pixPtr = Pixel(i); |
| 752 | if (pixPtr->Charge() < 1) continue; // discarded pixel |
| 753 | if (pixPtr->Size(ixy)-width < -1.e-4) |
| 754 | { |
| 755 | // try to merge |
| 756 | for (Int_t j=i+1; j<nPix; j++) |
| 757 | { |
| 758 | pixPtr1 = Pixel(j); |
| 759 | if (pixPtr1->Charge() < 1) continue; // discarded pixel |
| 760 | if (TMath::Abs(pixPtr1->Size(ixy)-width) < fgkDistancePrecision) continue; // right size |
| 761 | if (TMath::Abs(pixPtr1->Coord(ixy1)-pixPtr->Coord(ixy1)) > fgkDistancePrecision) continue; // different rows/columns |
| 762 | if (TMath::Abs(pixPtr1->Coord(ixy)-pixPtr->Coord(ixy)) < 2*width) |
| 763 | { |
| 764 | // merge |
| 765 | Double_t tmp = pixPtr->Coord(ixy) + pixPtr1->Size(ixy)* |
| 766 | TMath::Sign (1., pixPtr1->Coord(ixy) - pixPtr->Coord(ixy)); |
| 767 | pixPtr->SetCoord(ixy, tmp); |
| 768 | pixPtr->SetSize(ixy, width); |
| 769 | pixPtr->SetCharge(TMath::Min (pixPtr->Charge(),pixPtr1->Charge())); |
| 770 | pixPtr1->SetCharge(0); |
| 771 | pixPtr1 = 0; |
| 772 | break; |
| 773 | } |
| 774 | } // for (Int_t j=i+1; |
| 775 | if (pixPtr1 || i == nPix-1) |
| 776 | { |
| 777 | // edge pixel - just increase its size |
| 778 | for (Int_t j=0; j<cluster.Multiplicity(); ++j) |
| 779 | { |
| 780 | AliMUONPad* pad = cluster.Pad(j); |
| 781 | Double_t d = ( ixy == 0 ) ? pad->X() : ( ixy == 1 ) ? pad->Y() : -1E9; |
| 782 | |
| 783 | if (pixPtr->Coord(ixy) < d) |
| 784 | { |
| 785 | pixPtr->Shift(ixy, pixPtr->Size(ixy)-width); |
| 786 | } |
| 787 | else |
| 788 | { |
| 789 | pixPtr->Shift(ixy, -pixPtr->Size(ixy)+width); |
| 790 | } |
| 791 | pixPtr->SetSize(ixy, width); |
| 792 | break; |
| 793 | } |
| 794 | } |
| 795 | } // if (pixPtr->Size(ixy)-width < -1.e-4) |
| 796 | } // for (Int_t i=0; i<nPix; |
| 797 | } |
| 798 | |
| 799 | //_____________________________________________________________________________ |
| 800 | void AliMUONClusterFinderMLEM::AdjustPixel(Double_t wxmin, Double_t wymin) |
| 801 | { |
| 802 | /// Check if some pixels have large size (adjust if necessary) |
| 803 | |
| 804 | AliDebug(2,Form("wxmin=%e wymin=%e",wxmin,wymin)); |
| 805 | |
| 806 | Int_t n1[2], n2[2], iOK = 1, nPix = fPixArray->GetEntriesFast(); |
| 807 | AliMUONPad *pixPtr, pix; |
| 808 | Double_t xy0[2] = {9999, 9999}, wxy[2], dist[2] = {0}; |
| 809 | |
| 810 | // Check if large pixel size |
| 811 | for (Int_t i = 0; i < nPix; i++) { |
| 812 | pixPtr = (AliMUONPad*) fPixArray->UncheckedAt(i); |
| 813 | if (pixPtr->Charge() < 1) continue; // discarded pixel |
| 814 | if (pixPtr->Size(0) - wxmin < 1.e-4) { |
| 815 | if (xy0[0] > 9998) xy0[0] = pixPtr->Coord(0); // position of a "normal" pixel |
| 816 | if (pixPtr->Size(1) - wymin < 1.e-4) { |
| 817 | if (xy0[1] > 9998) xy0[1] = pixPtr->Coord(1); // position of a "normal" pixel |
| 818 | continue; |
| 819 | } else iOK = 0; // large pixel |
| 820 | } else { |
| 821 | iOK = 0; // large pixel |
| 822 | if (xy0[1] > 9998 && pixPtr->Size(1) - wymin < 1.e-4) xy0[1] = pixPtr->Coord(1); // "normal" pixel |
| 823 | } |
| 824 | if (xy0[0] < 9998 && xy0[1] < 9998) break; |
| 825 | } |
| 826 | if (iOK) return; |
| 827 | |
| 828 | wxy[0] = wxmin; |
| 829 | wxy[1] = wymin; |
| 830 | //cout << xy0[0] << " " << xy0[1] << endl; |
| 831 | for (Int_t i = 0; i < nPix; i++) { |
| 832 | pixPtr = (AliMUONPad*) fPixArray->UncheckedAt(i); |
| 833 | if (pixPtr->Charge() < 1) continue; // discarded pixel |
| 834 | n1[0] = n1[1] = 999; |
| 835 | n2[0] = n2[1] = 1; |
| 836 | for (Int_t j = 0; j < 2; j++) { |
| 837 | if (pixPtr->Size(j) - wxy[j] < 1.e-4) continue; |
| 838 | dist[j] = (pixPtr->Coord(j) - xy0[j]) / wxy[j] / 2; // normalized distance to "normal" pixel |
| 839 | n2[j] = TMath::Nint (pixPtr->Size(j) / wxy[j]); |
| 840 | n1[j] = n2[j] == 1 ? TMath::Nint(dist[j]) : (Int_t)dist[j]; |
| 841 | } |
| 842 | if (n1[0] > 998 && n1[1] > 998) continue; |
| 843 | if (fDebug) cout << " Different " << pixPtr->Size(0) << " " << wxy[0] << " " |
| 844 | << pixPtr->Size(1) << " " << wxy[1] <<endl; |
| 845 | |
| 846 | if (n2[0] > 2 || n2[1] > 2) { |
| 847 | //cout << n2[0] << " " << n2[1] << endl; |
| 848 | if (n2[0] > 2 && n1[0] < 999) n1[0]--; |
| 849 | if (n2[1] > 2 && n1[1] < 999) n1[1]--; |
| 850 | } |
| 851 | //cout << n1[0] << " " << n2[0] << " " << n1[1] << " " << n2[1] << endl; |
| 852 | pix = *pixPtr; |
| 853 | pix.SetSize(0, wxy[0]); pix.SetSize(1, wxy[1]); |
| 854 | //pixPtr->Print(); |
| 855 | for (Int_t ii = 0; ii < n2[0]; ii++) { |
| 856 | if (n1[0] < 999) pix.SetCoord(0, xy0[0] + (n1[0] + TMath::Sign(1.,dist[0]) * ii) * 2 * wxy[0]); |
| 857 | for (Int_t jj = 0; jj < n2[1]; jj++) { |
| 858 | if (n1[1] < 999) pix.SetCoord(1, xy0[1] + (n1[1] + TMath::Sign(1.,dist[1]) * jj) * 2 * wxy[1]); |
| 859 | fPixArray->Add(new AliMUONPad(pix)); |
| 860 | //pix.Print(); |
| 861 | } |
| 862 | } |
| 863 | pixPtr->SetCharge(0); |
| 864 | } // for (Int_t i = 0; i < nPix; |
| 865 | } |
| 866 | |
| 867 | //_____________________________________________________________________________ |
| 868 | void |
| 869 | AliMUONClusterFinderMLEM::Plot(const char* basename) |
| 870 | { |
| 871 | /// Make a plot and save it as png |
| 872 | |
| 9bbd7f60 |
873 | return; //AZ |
| c0a16418 |
874 | if (!fPlot) return; |
| 875 | |
| 876 | TCanvas* c = new TCanvas("MLEM","MLEM",800,600); |
| 877 | c->Draw(); |
| 878 | Draw(); |
| 879 | c->Modified(); |
| 880 | c->Update(); |
| 881 | c->Print(Form("%s.EVT%d.DE%d.CLU%d.png",basename,fEventNumber, |
| 882 | fDetElemId,fClusterNumber)); |
| 883 | } |
| 884 | |
| 885 | //_____________________________________________________________________________ |
| 886 | void |
| 887 | AliMUONClusterFinderMLEM::ComputeCoefficients(AliMUONCluster& cluster, |
| 888 | Double_t* coef, |
| 889 | Double_t* probi) |
| 890 | { |
| 891 | /// Compute coefficients needed for MLEM algorithm |
| 892 | |
| 893 | Int_t nPix = fPixArray->GetLast()+1; |
| 894 | |
| 895 | memset(probi,0,nPix*sizeof(Double_t)); |
| 896 | |
| 897 | for ( Int_t j=0; j<cluster.Multiplicity(); ++j ) |
| 898 | { |
| 899 | AliMUONPad* pad = cluster.Pad(j); |
| 900 | Int_t indx = j*nPix; |
| 901 | |
| 902 | for ( Int_t ipix=0; ipix<nPix; ++ipix ) |
| 903 | { |
| 904 | Int_t indx1 = indx + ipix; |
| 905 | if (pad->Status() < 0) |
| 906 | { |
| 907 | coef[indx1] = 0; |
| 908 | continue; |
| 909 | } |
| 910 | AliMUONPad* pixPtr = Pixel(ipix); |
| 911 | // coef is the charge (given by Mathieson integral) on pad, assuming |
| 912 | // the Mathieson is center at pixel. |
| 913 | coef[indx1] = fSplitter->ChargeIntegration(pixPtr->Coord(0), pixPtr->Coord(1), *pad); |
| b1a19e07 |
914 | AliDebug(2,Form("pad=(%d,%d,%e,%e,%e,%e) pix=(%e,%e,%e,%e) coef %e", |
| 915 | pad->Ix(),pad->Iy(), |
| 916 | pad->X(),pad->Y(), |
| 917 | pad->DX(),pad->DY(), |
| 918 | pixPtr->Coord(0),pixPtr->Coord(1), |
| 919 | pixPtr->Size(0),pixPtr->Size(1), |
| 920 | coef[indx1])); |
| c0a16418 |
921 | |
| 922 | probi[ipix] += coef[indx1]; |
| 923 | } |
| 924 | } |
| 925 | } |
| 926 | |
| 927 | //_____________________________________________________________________________ |
| 928 | Bool_t AliMUONClusterFinderMLEM::MainLoop(AliMUONCluster& cluster, Int_t iSimple) |
| 929 | { |
| 930 | /// Repeat MLEM algorithm until pixel size becomes sufficiently small |
| 931 | |
| 932 | Int_t nPix = fPixArray->GetLast()+1; |
| 933 | |
| 934 | AliDebug(2,Form("nPix=%d iSimple=%d, precluster=",nPix,iSimple)); |
| b1a19e07 |
935 | // StdoutToAliDebug(2,cluster.Print("full");); |
| c0a16418 |
936 | |
| 937 | if ( nPix < 0 ) |
| 938 | { |
| 939 | AliDebug(1,"No pixels, why am I here then ?"); |
| 940 | } |
| 941 | |
| 942 | AddVirtualPad(cluster); // add virtual pads if necessary |
| 943 | |
| 944 | Int_t npadTot = cluster.Multiplicity(); |
| 945 | Int_t npadOK = 0; |
| 946 | for (Int_t i = 0; i < npadTot; ++i) |
| 947 | { |
| 948 | if (cluster.Pad(i)->Status() == 0) ++npadOK; |
| 949 | } |
| 950 | |
| 951 | TH2D* mlem(0x0); |
| 952 | Double_t* coef(0x0); |
| 953 | Double_t* probi(0x0); |
| 954 | Int_t lc(0); // loop counter (for debug) |
| 955 | |
| b1a19e07 |
956 | // Plot("mlem.start"); |
| c0a16418 |
957 | |
| 958 | while (1) |
| 959 | { |
| 960 | ++lc; |
| 961 | mlem = (TH2D*) gROOT->FindObject("mlem"); |
| 962 | delete mlem; |
| 963 | |
| 964 | AliDebug(2,Form("lc %d nPix %d(%d) npadTot %d npadOK %d",lc,nPix,fPixArray->GetLast()+1,npadTot,npadOK)); |
| 965 | AliDebug(2,Form("EVT%d PixArray=",fEventNumber)); |
| b1a19e07 |
966 | // StdoutToAliDebug(2,fPixArray->Print("","full")); |
| c0a16418 |
967 | |
| 968 | coef = new Double_t [npadTot*nPix]; |
| 969 | probi = new Double_t [nPix]; |
| 970 | |
| 971 | // Calculate coefficients and pixel visibilities |
| 972 | ComputeCoefficients(cluster,coef,probi); |
| 973 | |
| 974 | for (Int_t ipix=0; ipix<nPix; ++ipix) |
| 975 | { |
| 976 | if (probi[ipix] < 0.01) |
| 977 | { |
| 978 | AliMUONPad* pixel = Pixel(ipix); |
| 979 | AliDebug(2,Form("Setting the following pixel to invisible as its probi<0.01:")); |
| b1a19e07 |
980 | // StdoutToAliDebug(2,cout << Form(" -- ipix %3d --- "); pixel->Print();); |
| c0a16418 |
981 | pixel->SetCharge(0); // "invisible" pixel |
| 982 | } |
| 983 | } |
| 984 | |
| 985 | // MLEM algorithm |
| 986 | Mlem(cluster,coef, probi, 15); |
| 987 | |
| 988 | Double_t xylim[4] = {999, 999, 999, 999}; |
| 989 | AliMUONPad* pixPtr(0x0); |
| 990 | |
| 991 | for ( Int_t ipix=0; ipix<nPix; ++ipix ) |
| 992 | { |
| 993 | pixPtr = Pixel(ipix); |
| 994 | for ( Int_t i=0; i<4; ++i ) |
| 995 | { |
| 996 | xylim[i] = TMath::Min (xylim[i], (i%2 ? -1 : 1)*pixPtr->Coord(i/2)); |
| 997 | } |
| 998 | } |
| 999 | for (Int_t i=0; i<4; i++) |
| 1000 | { |
| 1001 | xylim[i] -= pixPtr->Size(i/2); |
| 1002 | } |
| 1003 | |
| 1004 | |
| 1005 | Int_t nx = TMath::Nint ((-xylim[1]-xylim[0])/pixPtr->Size(0)/2); |
| 1006 | Int_t ny = TMath::Nint ((-xylim[3]-xylim[2])/pixPtr->Size(1)/2); |
| 1007 | |
| 1008 | // StdoutToAliDebug(2,cout << "pixel used for nx,ny computation : "; pixPtr->Print();); |
| 1009 | AliDebug(2,Form("lc %d pixPtr size = %e,%e nx,ny=%d,%d xylim=%e,%e,%e,%e", |
| 1010 | lc,pixPtr->Size(0),pixPtr->Size(1),nx,ny, |
| 1011 | xylim[0],-xylim[1],xylim[2],-xylim[3] |
| 1012 | )); |
| 1013 | |
| 1014 | mlem = new TH2D("mlem","mlem",nx,xylim[0],-xylim[1],ny,xylim[2],-xylim[3]); |
| 1015 | |
| 1016 | for (Int_t ipix=0; ipix<nPix; ++ipix) |
| 1017 | { |
| 1018 | AliMUONPad* pixPtr = Pixel(ipix); |
| 1019 | mlem->Fill(pixPtr->Coord(0),pixPtr->Coord(1),pixPtr->Charge()); |
| 1020 | } |
| 1021 | |
| 1022 | // Check if the total charge of pixels is too low |
| 1023 | Double_t qTot = 0; |
| 1024 | for ( Int_t i=0; i<nPix; ++i) |
| 1025 | { |
| 1026 | qTot += Pixel(i)->Charge(); |
| 1027 | } |
| 1028 | |
| 1029 | if ( qTot < 1.e-4 || ( npadOK < 3 && qTot < 7 ) ) |
| 1030 | { |
| 1031 | AliDebug(1,Form("Deleting the above cluster (charge %e too low, npadOK=%d)",qTot,npadOK)); |
| 1032 | delete [] coef; |
| 1033 | delete [] probi; |
| 1034 | coef = 0; |
| 1035 | probi = 0; |
| 1036 | fPixArray->Delete(); |
| 1037 | for ( Int_t i=0; i<npadTot; ++i) |
| 1038 | { |
| 1039 | AliMUONPad* pad = cluster.Pad(i); |
| 1040 | if ( pad->Status() == 0) pad->SetStatus(-1); |
| 1041 | } |
| 1042 | return kFALSE; |
| 1043 | } |
| 1044 | |
| 1045 | if (iSimple) |
| 1046 | { |
| 1047 | // Simple cluster - skip further passes thru EM-procedure |
| 1048 | Simple(cluster); |
| 1049 | delete [] coef; |
| 1050 | delete [] probi; |
| 1051 | coef = 0; |
| 1052 | probi = 0; |
| 1053 | fPixArray->Delete(); |
| 1054 | return kTRUE; |
| 1055 | } |
| 1056 | |
| 1057 | // Calculate position of the center-of-gravity around the maximum pixel |
| 1058 | Double_t xyCOG[2]; |
| 1059 | FindCOG(mlem, xyCOG); |
| 1060 | |
| 1061 | if (TMath::Min(pixPtr->Size(0),pixPtr->Size(1)) < 0.07 && |
| 1062 | pixPtr->Size(0) > pixPtr->Size(1)) break; |
| 1063 | |
| 1064 | // Sort pixels according to the charge |
| 1065 | fPixArray->Sort(); |
| 1066 | Double_t pixMin = 0.01*Pixel(0)->Charge(); |
| 1067 | pixMin = TMath::Min(pixMin,50.); |
| 1068 | |
| 1069 | // Decrease pixel size and shift pixels to make them centered at |
| 1070 | // the maximum one |
| 1071 | Int_t indx = (pixPtr->Size(0)>pixPtr->Size(1)) ? 0 : 1; |
| 1072 | Int_t ix(1); |
| 1073 | Double_t width = 0; |
| 1074 | Double_t shift[2] = { 0.0, 0.0 }; |
| 1075 | for (Int_t i=0; i<4; i++) xylim[i] = 999; |
| 1076 | Int_t nPix1 = nPix; |
| 1077 | nPix = 0; |
| 1078 | for (Int_t ipix=0; ipix<nPix1; ++ipix) |
| 1079 | { |
| 1080 | AliMUONPad* pixPtr = Pixel(ipix); |
| 1081 | if ( nPix >= npadOK // too many pixels already |
| 1082 | || |
| 1083 | pixPtr->Charge() < pixMin // too low charge |
| 1084 | ) |
| 1085 | { |
| 1086 | RemovePixel(ipix); |
| 1087 | continue; |
| 1088 | } |
| 1089 | for (Int_t i=0; i<2; ++i) |
| 1090 | { |
| 1091 | if (!i) |
| 1092 | { |
| 1093 | pixPtr->SetCharge(10); |
| 1094 | pixPtr->SetSize(indx, pixPtr->Size(indx)/2); |
| 1095 | width = -pixPtr->Size(indx); |
| 1096 | pixPtr->Shift(indx, width); |
| 1097 | // Shift pixel position |
| 1098 | if (ix) |
| 1099 | { |
| 1100 | ix = 0; |
| 1101 | for (Int_t j=0; j<2; ++j) |
| 1102 | { |
| 1103 | shift[j] = pixPtr->Coord(j) - xyCOG[j]; |
| 1104 | shift[j] -= ((Int_t)(shift[j]/pixPtr->Size(j)/2))*pixPtr->Size(j)*2; |
| 1105 | } |
| 1106 | } // if (ix) |
| 1107 | pixPtr->Shift(0, -shift[0]); |
| 1108 | pixPtr->Shift(1, -shift[1]); |
| 1109 | } |
| 1110 | else |
| 1111 | { |
| 1112 | pixPtr = new AliMUONPad(*pixPtr); |
| 1113 | pixPtr->Shift(indx, -2*width); |
| 1114 | fPixArray->Add(pixPtr); |
| 1115 | } |
| 1116 | for (Int_t i=0; i<4; ++i) |
| 1117 | { |
| 1118 | xylim[i] = TMath::Min (xylim[i], (i%2 ? -1 : 1)*pixPtr->Coord(i/2)); |
| 1119 | } |
| 1120 | } // for (Int_t i=0; i<2; |
| 1121 | nPix += 2; |
| 1122 | } // for (Int_t ipix=0; |
| 1123 | |
| 1124 | fPixArray->Compress(); |
| 1125 | nPix = fPixArray->GetEntriesFast(); |
| 1126 | |
| 1127 | AliDebug(2,Form("After shift:")); |
| b1a19e07 |
1128 | // StdoutToAliDebug(2,fPixArray->Print("","full");); |
| 1129 | // Plot(Form("mlem.lc%d",lc+1)); |
| c0a16418 |
1130 | |
| 1131 | AliDebug(2,Form(" xyCOG=%9.6f %9.6f xylim=%9.6f,%9.6f,%9.6f,%9.6f", |
| 1132 | xyCOG[0],xyCOG[1], |
| 1133 | xylim[0],xylim[1], |
| 1134 | xylim[2],xylim[3])); |
| 1135 | |
| 1136 | // Remove excessive pixels |
| 1137 | if (nPix > npadOK) |
| 1138 | { |
| 1139 | for (Int_t ipix=npadOK; ipix<nPix; ++ipix) |
| 1140 | { |
| 1141 | RemovePixel(ipix); |
| 1142 | } |
| 1143 | } |
| 1144 | else |
| 1145 | { |
| 1146 | AliMUONPad* pixPtr = Pixel(0); |
| 1147 | // add pixels if the maximum is at the limit of pixel area |
| 1148 | // start from Y-direction |
| 1149 | Int_t j = 0; |
| 1150 | for (Int_t i=3; i>-1; --i) |
| 1151 | { |
| 1152 | if (nPix < npadOK && |
| 1153 | TMath::Abs((i%2 ? -1 : 1)*xylim[i]-xyCOG[i/2]) < pixPtr->Size(i/2)) |
| 1154 | { |
| 1155 | AliMUONPad* p = static_cast<AliMUONPad*>(pixPtr->Clone()); |
| 1156 | p->SetCoord(i/2, xyCOG[i/2]+(i%2 ? 2:-2)*pixPtr->Size(i/2)); |
| 1157 | j = TMath::Even (i/2); |
| 1158 | p->SetCoord(j, xyCOG[j]); |
| 1159 | AliDebug(2,Form("Adding pixel on the edge (i=%d) ",i)); |
| b1a19e07 |
1160 | // StdoutToAliDebug(2,cout << " ---- "; |
| 1161 | // p->Print("corners");); |
| c0a16418 |
1162 | fPixArray->Add(p); |
| 1163 | ++nPix; |
| 1164 | } |
| 1165 | } |
| 1166 | } |
| 1167 | fPixArray->Compress(); |
| 1168 | nPix = fPixArray->GetEntriesFast(); |
| 1169 | delete [] coef; |
| 1170 | delete [] probi; |
| 1171 | coef = 0; |
| 1172 | probi = 0; |
| 1173 | } // while (1) |
| 1174 | |
| 1175 | AliDebug(2,Form("At the end of while loop nPix=%d : ",fPixArray->GetLast()+1)); |
| b1a19e07 |
1176 | // StdoutToAliDebug(2,fPixArray->Print("","full");); |
| c0a16418 |
1177 | |
| 1178 | // remove pixels with low signal or low visibility |
| 1179 | // Cuts are empirical !!! |
| 1180 | Double_t thresh = TMath::Max (mlem->GetMaximum()/100.,1.); |
| 1181 | thresh = TMath::Min (thresh,50.); |
| 1182 | Double_t cmax = -1; |
| 1183 | Double_t charge = 0; |
| 1184 | |
| 1185 | for ( Int_t i=0; i<nPix; ++i) |
| 1186 | { |
| 1187 | cmax = TMath::Max (cmax,probi[i]); |
| 1188 | } |
| 1189 | |
| 1190 | // Mark pixels which should be removed |
| 1191 | for (Int_t i=0; i<nPix; ++i) |
| 1192 | { |
| 1193 | AliMUONPad* pixPtr = Pixel(i); |
| 1194 | charge = pixPtr->Charge(); |
| 1195 | if (charge < thresh) |
| 1196 | { |
| 1197 | pixPtr->SetCharge(-charge); |
| 1198 | } |
| 1199 | } |
| 1200 | |
| 1201 | // Move charge of removed pixels to their nearest neighbour (to keep total charge the same) |
| 1202 | Int_t near = 0; |
| 1203 | for (Int_t i=0; i<nPix; ++i) |
| 1204 | { |
| 1205 | AliMUONPad* pixPtr = Pixel(i); |
| 1206 | charge = pixPtr->Charge(); |
| 1207 | if (charge > 0) continue; |
| 1208 | near = FindNearest(pixPtr); |
| 1209 | pixPtr->SetCharge(0); |
| 1210 | probi[i] = 0; // make it "invisible" |
| 1211 | AliMUONPad* pnear = Pixel(near); |
| 1212 | pnear->SetCharge(pnear->Charge() + (-charge)); |
| 1213 | } |
| 1214 | Mlem(cluster,coef,probi,2); |
| 1215 | |
| 1216 | AliDebug(2,Form("Before splitting nPix=%d EVT %d DE %d",fPixArray->GetLast()+1,fEventNumber,fDetElemId)); |
| b1a19e07 |
1217 | // StdoutToAliDebug(2,fPixArray->Print("","full");); |
| 1218 | // Plot("mlem.beforesplit"); |
| c0a16418 |
1219 | |
| 1220 | // Update histogram |
| 1221 | for (Int_t i=0; i<nPix; ++i) |
| 1222 | { |
| 1223 | AliMUONPad* pixPtr = Pixel(i); |
| 1224 | Int_t ix = mlem->GetXaxis()->FindBin(pixPtr->Coord(0)); |
| 1225 | Int_t iy = mlem->GetYaxis()->FindBin(pixPtr->Coord(1)); |
| 1226 | mlem->SetBinContent(ix, iy, pixPtr->Charge()); |
| 1227 | } |
| 1228 | |
| 1229 | // Try to split into clusters |
| 1230 | Bool_t ok = kTRUE; |
| 1231 | if (mlem->GetSum() < 1) |
| 1232 | { |
| 1233 | ok = kFALSE; |
| 1234 | } |
| 1235 | else |
| 1236 | { |
| 1237 | fSplitter->Split(cluster,mlem,coef,fClusterList); |
| 1238 | } |
| 1239 | |
| 1240 | delete [] coef; |
| 1241 | delete [] probi; |
| 1242 | coef = 0; |
| 1243 | probi = 0; |
| 1244 | fPixArray->Delete(); |
| 1245 | |
| 1246 | return ok; |
| 1247 | } |
| 1248 | |
| 1249 | //_____________________________________________________________________________ |
| 1250 | void AliMUONClusterFinderMLEM::Mlem(AliMUONCluster& cluster, |
| 1251 | Double_t* coef, Double_t* probi, |
| 1252 | Int_t nIter) |
| 1253 | { |
| 1254 | /// Use MLEM to find pixel charges |
| 1255 | |
| 1256 | Int_t nPix = fPixArray->GetEntriesFast(); |
| 1257 | |
| 1258 | Int_t npad = cluster.Multiplicity(); |
| 1259 | |
| 1260 | Double_t* probi1 = new Double_t[nPix]; |
| 1261 | Double_t probMax = 0; |
| 1262 | Double_t tmp = TMath::MaxElement(nPix,probi); |
| 1263 | |
| 1264 | for (Int_t ipix=0; ipix<nPix; ++ipix) |
| 1265 | { |
| 1266 | probMax = TMath::Max(probMax,probi[ipix]); |
| 1267 | } |
| 1268 | |
| 1269 | if (probMax!=tmp) { AliWarning(Form("probMax=%e tmp=%e",probMax,tmp)); } |
| 1270 | |
| 1271 | for (Int_t iter=0; iter<nIter; ++iter) |
| 1272 | { |
| 1273 | // Do iterations |
| 1274 | for (Int_t ipix=0; ipix<nPix; ++ipix) |
| 1275 | { |
| 9bbd7f60 |
1276 | Pixel(ipix)->SetChargeBackup(0); |
| c0a16418 |
1277 | // Correct each pixel |
| 1278 | if (probi[ipix] < 0.01) continue; // skip "invisible" pixel |
| 1279 | Double_t sum = 0; |
| 1280 | probi1[ipix] = probMax; |
| 1281 | for (Int_t j=0; j<npad; j++) |
| 1282 | { |
| 1283 | AliMUONPad* pad = cluster.Pad(j); |
| 1284 | if (pad->Status() < 0) continue; |
| 1285 | Double_t sum1 = 0; |
| 1286 | Int_t indx1 = j*nPix; |
| 1287 | Int_t indx = indx1 + ipix; |
| 1288 | // Calculate expectation |
| 1289 | for (Int_t i=0; i<nPix; i++) |
| 1290 | { |
| 1291 | sum1 += Pixel(i)->Charge()*coef[indx1+i]; |
| 1292 | } |
| 1293 | if ( pad->Charge() > fgkSaturation-1 && sum1 > pad->Charge() ) //FIXME : remove usage of fgkSaturation |
| 1294 | { |
| 1295 | if ( !pad->IsSaturated() ) |
| 1296 | { |
| 1297 | AliWarning("Got a pad charge above saturation not backed-up by pad->IsSaturated() function : "); |
| 1298 | StdoutToAliWarning(pad->Print("full")); |
| 1299 | } |
| 1300 | // correct for pad charge overflows |
| 1301 | probi1[ipix] -= coef[indx]; |
| 1302 | continue; |
| 1303 | } |
| 1304 | |
| 1305 | if (coef[indx] > 1.e-6) |
| 1306 | { |
| 1307 | sum += pad->Charge()*coef[indx]/sum1; |
| 1308 | } |
| 1309 | } // for (Int_t j=0; |
| 1310 | AliMUONPad* pixPtr = Pixel(ipix); |
| 1311 | if (probi1[ipix] > 1.e-6) |
| 1312 | { |
| 9bbd7f60 |
1313 | //AZ pixPtr->SetCharge(pixPtr->Charge()*sum/probi1[ipix]); |
| 1314 | pixPtr->SetChargeBackup(pixPtr->Charge()*sum/probi1[ipix]); |
| c0a16418 |
1315 | } |
| 1316 | } // for (Int_t ipix=0; |
| 9bbd7f60 |
1317 | for (Int_t i = 0; i < nPix; ++i) { |
| 1318 | AliMUONPad* pixPtr = Pixel(i); |
| 1319 | pixPtr->SetCharge(pixPtr->ChargeBackup()); |
| 1320 | } |
| c0a16418 |
1321 | } // for (Int_t iter=0; |
| 1322 | delete [] probi1; |
| 1323 | } |
| 1324 | |
| 1325 | //_____________________________________________________________________________ |
| 1326 | void AliMUONClusterFinderMLEM::FindCOG(TH2D *mlem, Double_t *xyc) |
| 1327 | { |
| 1328 | /// Calculate position of the center-of-gravity around the maximum pixel |
| 1329 | |
| 1330 | Int_t ixmax, iymax, ix, nsumx=0, nsumy=0, nsum=0; |
| 1331 | Int_t i1 = -9, j1 = -9; |
| 1332 | mlem->GetMaximumBin(ixmax,iymax,ix); |
| 1333 | Int_t nx = mlem->GetNbinsX(); |
| 1334 | Int_t ny = mlem->GetNbinsY(); |
| 1335 | Double_t thresh = mlem->GetMaximum()/10; |
| 1336 | Double_t x, y, cont, xq=0, yq=0, qq=0; |
| 1337 | |
| 1338 | for (Int_t i=TMath::Max(1,iymax-1); i<=TMath::Min(ny,iymax+1); i++) { |
| 1339 | y = mlem->GetYaxis()->GetBinCenter(i); |
| 1340 | for (Int_t j=TMath::Max(1,ixmax-1); j<=TMath::Min(nx,ixmax+1); j++) { |
| 1341 | cont = mlem->GetCellContent(j,i); |
| 1342 | if (cont < thresh) continue; |
| 1343 | if (i != i1) {i1 = i; nsumy++;} |
| 1344 | if (j != j1) {j1 = j; nsumx++;} |
| 1345 | x = mlem->GetXaxis()->GetBinCenter(j); |
| 1346 | xq += x*cont; |
| 1347 | yq += y*cont; |
| 1348 | qq += cont; |
| 1349 | nsum++; |
| 1350 | } |
| 1351 | } |
| 1352 | |
| 1353 | Double_t cmax = 0; |
| 1354 | Int_t i2 = 0, j2 = 0; |
| 1355 | x = y = 0; |
| 1356 | if (nsumy == 1) { |
| 1357 | // one bin in Y - add one more (with the largest signal) |
| 1358 | for (Int_t i=TMath::Max(1,iymax-1); i<=TMath::Min(ny,iymax+1); i++) { |
| 1359 | if (i == iymax) continue; |
| 1360 | for (Int_t j=TMath::Max(1,ixmax-1); j<=TMath::Min(nx,ixmax+1); j++) { |
| 1361 | cont = mlem->GetCellContent(j,i); |
| 1362 | if (cont > cmax) { |
| 1363 | cmax = cont; |
| 1364 | x = mlem->GetXaxis()->GetBinCenter(j); |
| 1365 | y = mlem->GetYaxis()->GetBinCenter(i); |
| 1366 | i2 = i; |
| 1367 | j2 = j; |
| 1368 | } |
| 1369 | } |
| 1370 | } |
| 1371 | xq += x*cmax; |
| 1372 | yq += y*cmax; |
| 1373 | qq += cmax; |
| 1374 | if (i2 != i1) nsumy++; |
| 1375 | if (j2 != j1) nsumx++; |
| 1376 | nsum++; |
| 1377 | } // if (nsumy == 1) |
| 1378 | |
| 1379 | if (nsumx == 1) { |
| 1380 | // one bin in X - add one more (with the largest signal) |
| 1381 | cmax = x = y = 0; |
| 1382 | for (Int_t j=TMath::Max(1,ixmax-1); j<=TMath::Min(nx,ixmax+1); j++) { |
| 1383 | if (j == ixmax) continue; |
| 1384 | for (Int_t i=TMath::Max(1,iymax-1); i<=TMath::Min(ny,iymax+1); i++) { |
| 1385 | cont = mlem->GetCellContent(j,i); |
| 1386 | if (cont > cmax) { |
| 1387 | cmax = cont; |
| 1388 | x = mlem->GetXaxis()->GetBinCenter(j); |
| 1389 | y = mlem->GetYaxis()->GetBinCenter(i); |
| 1390 | i2 = i; |
| 1391 | j2 = j; |
| 1392 | } |
| 1393 | } |
| 1394 | } |
| 1395 | xq += x*cmax; |
| 1396 | yq += y*cmax; |
| 1397 | qq += cmax; |
| 1398 | if (i2 != i1) nsumy++; |
| 1399 | if (j2 != j1) nsumx++; |
| 1400 | nsum++; |
| 1401 | } // if (nsumx == 1) |
| 1402 | |
| 1403 | xyc[0] = xq/qq; xyc[1] = yq/qq; |
| 1404 | AliDebug(2,Form("x,y COG = %e,%e",xyc[0],xyc[1])); |
| 1405 | } |
| 1406 | |
| 1407 | //_____________________________________________________________________________ |
| 1408 | Int_t AliMUONClusterFinderMLEM::FindNearest(AliMUONPad *pixPtr0) |
| 1409 | { |
| 1410 | /// Find the pixel nearest to the given one |
| 1411 | /// (algorithm may be not very efficient) |
| 1412 | |
| 1413 | Int_t nPix = fPixArray->GetEntriesFast(), imin = 0; |
| 1414 | Double_t rmin = 99999, dx = 0, dy = 0, r = 0; |
| 1415 | Double_t xc = pixPtr0->Coord(0), yc = pixPtr0->Coord(1); |
| 1416 | AliMUONPad *pixPtr; |
| 1417 | |
| 1418 | for (Int_t i=0; i<nPix; i++) { |
| 1419 | pixPtr = (AliMUONPad*) fPixArray->UncheckedAt(i); |
| 1420 | if (pixPtr->Charge() < 0.5) continue; |
| 1421 | dx = (xc - pixPtr->Coord(0)) / pixPtr->Size(0); |
| 1422 | dy = (yc - pixPtr->Coord(1)) / pixPtr->Size(1); |
| 1423 | r = dx *dx + dy * dy; |
| 1424 | if (r < rmin) { rmin = r; imin = i; } |
| 1425 | } |
| 1426 | return imin; |
| 1427 | } |
| 1428 | |
| 1429 | |
| 1430 | //_____________________________________________________________________________ |
| 1431 | TStopwatch* |
| 1432 | AliMUONClusterFinderMLEM::Timer(Int_t i) const |
| 1433 | { |
| 1434 | /// Return timer at index i |
| 1435 | return static_cast<TStopwatch*>(fTimers->At(i)); |
| 1436 | } |
| 1437 | |
| 1438 | //_____________________________________________________________________________ |
| 1439 | void |
| 1440 | AliMUONClusterFinderMLEM::Paint(Option_t*) |
| 1441 | { |
| 1442 | /// Paint cluster and pixels |
| 1443 | |
| 1444 | AliMpArea area(fPreCluster->Area()); |
| 1445 | |
| 1446 | gPad->Range(area.LeftBorder(),area.DownBorder(),area.RightBorder(),area.UpBorder()); |
| 1447 | |
| 1448 | gVirtualX->SetFillStyle(1001); |
| 1449 | gVirtualX->SetFillColor(3); |
| 1450 | gVirtualX->SetLineColor(3); |
| 1451 | |
| 1452 | Double_t s(1.0); |
| 1453 | |
| 1454 | for ( Int_t i = 0; i <= fPixArray->GetLast(); ++i) |
| 1455 | { |
| 1456 | AliMUONPad* pixel = Pixel(i); |
| 1457 | |
| 1458 | gPad->PaintBox(pixel->Coord(0)-pixel->Size(0)*s, |
| 1459 | pixel->Coord(1)-pixel->Size(1)*s, |
| 1460 | pixel->Coord(0)+pixel->Size(0)*s, |
| 1461 | pixel->Coord(1)+pixel->Size(1)*s); |
| 1462 | |
| 1463 | // for ( Int_t sign = -1; sign < 2; sign +=2 ) |
| 1464 | // { |
| 1465 | // gPad->PaintLine(pixel->Coord(0) - pixel->Size(0), |
| 1466 | // pixel->Coord(1) + sign*pixel->Size(1), |
| 1467 | // pixel->Coord(0) + pixel->Size(0), |
| 1468 | // pixel->Coord(1) - sign*pixel->Size(1) |
| 1469 | // ); |
| 1470 | // } |
| 1471 | } |
| 1472 | |
| 1473 | |
| 1474 | gVirtualX->SetFillStyle(0); |
| 1475 | |
| 1476 | fPreCluster->Paint(); |
| 1477 | |
| 1478 | gVirtualX->SetLineColor(1); |
| 1479 | gVirtualX->SetLineWidth(2); |
| 1480 | gVirtualX->SetFillStyle(0); |
| 1481 | gVirtualX->SetTextColor(1); |
| 1482 | gVirtualX->SetTextAlign(22); |
| 1483 | |
| 1484 | for ( Int_t i = 0; i <= fPixArray->GetLast(); ++i) |
| 1485 | { |
| 1486 | AliMUONPad* pixel = Pixel(i); |
| 1487 | gPad->PaintBox(pixel->Coord(0)-pixel->Size(0), |
| 1488 | pixel->Coord(1)-pixel->Size(1), |
| 1489 | pixel->Coord(0)+pixel->Size(0), |
| 1490 | pixel->Coord(1)+pixel->Size(1)); |
| 1491 | gVirtualX->SetTextSize(pixel->Size(0)*60); |
| 1492 | |
| 1493 | gPad->PaintText(pixel->Coord(0),pixel->Coord(1),Form("%d",(Int_t)(pixel->Charge()))); |
| 1494 | } |
| 1495 | } |
| 1496 | |
| 1497 | //_____________________________________________________________________________ |
| 1498 | Int_t AliMUONClusterFinderMLEM::FindLocalMaxima(TObjArray *pixArray, Int_t *localMax, Double_t *maxVal) |
| 1499 | { |
| 1500 | /// Find local maxima in pixel space for large preclusters in order to |
| 1501 | /// try to split them into smaller pieces (to speed up the MLEM procedure) |
| 1502 | /// or to find additional fitting seeds if clusters were not completely resolved |
| 1503 | |
| 1504 | AliDebug(1,Form("nPix=%d",pixArray->GetLast()+1)); |
| 1505 | |
| 1506 | TH2D *hist = NULL; |
| 1507 | //if (pixArray == fPixArray) hist = (TH2D*) gROOT->FindObject("anode"); |
| 1508 | //else { hist = (TH2D*) gROOT->FindObject("anode1"); cout << hist << endl; } |
| 1509 | //if (hist) hist->Delete(); |
| 1510 | |
| 1511 | Double_t xylim[4] = {999, 999, 999, 999}; |
| 1512 | |
| 1513 | Int_t nPix = pixArray->GetEntriesFast(); |
| 1514 | AliMUONPad *pixPtr = 0; |
| 1515 | for (Int_t ipix=0; ipix<nPix; ipix++) { |
| 1516 | pixPtr = (AliMUONPad*) pixArray->UncheckedAt(ipix); |
| 1517 | for (Int_t i=0; i<4; i++) |
| 1518 | xylim[i] = TMath::Min (xylim[i], (i%2 ? -1 : 1)*pixPtr->Coord(i/2)); |
| 1519 | } |
| 1520 | for (Int_t i=0; i<4; i++) xylim[i] -= pixPtr->Size(i/2); |
| 1521 | |
| 1522 | Int_t nx = TMath::Nint ((-xylim[1]-xylim[0])/pixPtr->Size(0)/2); |
| 1523 | Int_t ny = TMath::Nint ((-xylim[3]-xylim[2])/pixPtr->Size(1)/2); |
| 1524 | if (pixArray == fPixArray) hist = new TH2D("anode","anode",nx,xylim[0],-xylim[1],ny,xylim[2],-xylim[3]); |
| 1525 | else hist = new TH2D("anode1","anode1",nx,xylim[0],-xylim[1],ny,xylim[2],-xylim[3]); |
| 1526 | for (Int_t ipix=0; ipix<nPix; ipix++) { |
| 1527 | pixPtr = (AliMUONPad*) pixArray->UncheckedAt(ipix); |
| 1528 | hist->Fill(pixPtr->Coord(0), pixPtr->Coord(1), pixPtr->Charge()); |
| 1529 | } |
| 1530 | // if (fDraw && pixArray == fPixArray) fDraw->DrawHist("c2", hist); |
| 1531 | |
| 1532 | Int_t nMax = 0, indx; |
| 1533 | Int_t *isLocalMax = new Int_t[ny*nx]; |
| 1534 | for (Int_t i=0; i<ny*nx; i++) isLocalMax[i] = 0; |
| 1535 | |
| 1536 | for (Int_t i=1; i<=ny; i++) { |
| 1537 | indx = (i-1) * nx; |
| 1538 | for (Int_t j=1; j<=nx; j++) { |
| 1539 | if (hist->GetCellContent(j,i) < 0.5) continue; |
| 1540 | //if (isLocalMax[indx+j-1] < 0) continue; |
| 1541 | if (isLocalMax[indx+j-1] != 0) continue; |
| 1542 | FlagLocalMax(hist, i, j, isLocalMax); |
| 1543 | } |
| 1544 | } |
| 1545 | |
| 1546 | for (Int_t i=1; i<=ny; i++) { |
| 1547 | indx = (i-1) * nx; |
| 1548 | for (Int_t j=1; j<=nx; j++) { |
| 1549 | if (isLocalMax[indx+j-1] > 0) { |
| 1550 | localMax[nMax] = indx + j - 1; |
| 1551 | maxVal[nMax++] = hist->GetCellContent(j,i); |
| 1552 | if (nMax > 99) AliFatal(" Too many local maxima !!!"); |
| 1553 | } |
| 1554 | } |
| 1555 | } |
| 1556 | if (fDebug) cout << " Local max: " << nMax << endl; |
| 1557 | delete [] isLocalMax; isLocalMax = 0; |
| 1558 | return nMax; |
| 1559 | } |
| 1560 | |
| 1561 | //_____________________________________________________________________________ |
| 1562 | void AliMUONClusterFinderMLEM::FlagLocalMax(TH2D *hist, Int_t i, Int_t j, Int_t *isLocalMax) |
| 1563 | { |
| 1564 | /// Flag pixels (whether or not local maxima) |
| 1565 | |
| 1566 | Int_t nx = hist->GetNbinsX(); |
| 1567 | Int_t ny = hist->GetNbinsY(); |
| 1568 | Int_t cont = TMath::Nint (hist->GetCellContent(j,i)); |
| 1569 | Int_t cont1 = 0, indx = (i-1)*nx+j-1, indx1 = 0, indx2 = 0; |
| 1570 | |
| 1571 | for (Int_t i1=i-1; i1<i+2; i1++) { |
| 1572 | if (i1 < 1 || i1 > ny) continue; |
| 1573 | indx1 = (i1 - 1) * nx; |
| 1574 | for (Int_t j1=j-1; j1<j+2; j1++) { |
| 1575 | if (j1 < 1 || j1 > nx) continue; |
| 1576 | if (i == i1 && j == j1) continue; |
| 1577 | indx2 = indx1 + j1 - 1; |
| 1578 | cont1 = TMath::Nint (hist->GetCellContent(j1,i1)); |
| 1579 | if (cont < cont1) { isLocalMax[indx] = -1; return; } |
| 1580 | else if (cont > cont1) isLocalMax[indx2] = -1; |
| 1581 | else { // the same charge |
| 1582 | isLocalMax[indx] = 1; |
| 1583 | if (isLocalMax[indx2] == 0) { |
| 1584 | FlagLocalMax(hist, i1, j1, isLocalMax); |
| 1585 | if (isLocalMax[indx2] < 0) { isLocalMax[indx] = -1; return; } |
| 1586 | else isLocalMax[indx2] = -1; |
| 1587 | } |
| 1588 | } |
| 1589 | } |
| 1590 | } |
| 1591 | isLocalMax[indx] = 1; // local maximum |
| 1592 | } |
| 1593 | |
| 1594 | //_____________________________________________________________________________ |
| 1595 | void AliMUONClusterFinderMLEM::FindCluster(AliMUONCluster& cluster, |
| 1596 | Int_t *localMax, Int_t iMax) |
| 1597 | { |
| 1598 | /// Find pixel cluster around local maximum \a iMax and pick up pads |
| 1599 | /// overlapping with it |
| 1600 | |
| 1601 | TH2D *hist = (TH2D*) gROOT->FindObject("anode"); |
| 1602 | Int_t nx = hist->GetNbinsX(); |
| 1603 | Int_t ny = hist->GetNbinsY(); |
| 1604 | Int_t ic = localMax[iMax] / nx + 1; |
| 1605 | Int_t jc = localMax[iMax] % nx + 1; |
| 1606 | Bool_t *used = new Bool_t[ny*nx]; |
| 1607 | for (Int_t i=0; i<ny*nx; i++) used[i] = kFALSE; |
| 1608 | |
| 1609 | // Drop all pixels from the array - pick up only the ones from the cluster |
| 1610 | fPixArray->Delete(); |
| 1611 | |
| 1612 | Double_t wx = hist->GetXaxis()->GetBinWidth(1)/2; |
| 1613 | Double_t wy = hist->GetYaxis()->GetBinWidth(1)/2; |
| 1614 | Double_t yc = hist->GetYaxis()->GetBinCenter(ic); |
| 1615 | Double_t xc = hist->GetXaxis()->GetBinCenter(jc); |
| 1616 | Double_t cont = hist->GetCellContent(jc,ic); |
| 1617 | fPixArray->Add(new AliMUONPad (xc, yc, wx, wy, cont)); |
| 1618 | used[(ic-1)*nx+jc-1] = kTRUE; |
| 1619 | fSplitter->AddBin(hist, ic, jc, 1, used, (TObjArray*)0); // recursive call |
| 1620 | |
| 1621 | Int_t nPix = fPixArray->GetEntriesFast(); |
| 1622 | Int_t npad = cluster.Multiplicity(); |
| 1623 | |
| 1624 | for (Int_t i=0; i<nPix; ++i) |
| 1625 | { |
| 1626 | AliMUONPad* pixPtr = Pixel(i); |
| 1627 | pixPtr->SetSize(0,wx); |
| 1628 | pixPtr->SetSize(1,wy); |
| 1629 | } |
| 1630 | |
| 1631 | // Pick up pads which overlap with found pixels |
| 1632 | for (Int_t i=0; i<npad; i++) |
| 1633 | { |
| 1634 | cluster.Pad(i)->SetStatus(-1); |
| 1635 | } |
| 1636 | |
| 1637 | for (Int_t i=0; i<nPix; i++) |
| 1638 | { |
| 1639 | AliMUONPad* pixPtr = Pixel(i); |
| 1640 | for (Int_t j=0; j<npad; ++j) |
| 1641 | { |
| 1642 | AliMUONPad* pad = cluster.Pad(j); |
| 1643 | if ( Overlap(*pad,*pixPtr) ) |
| 1644 | { |
| 1645 | pad->SetStatus(0); |
| 1646 | } |
| 1647 | } |
| 1648 | } |
| 1649 | |
| 1650 | delete [] used; used = 0; |
| 1651 | } |
| 1652 | |
| 1653 | //_____________________________________________________________________________ |
| 1654 | AliMUONClusterFinderMLEM& |
| 1655 | AliMUONClusterFinderMLEM::operator=(const AliMUONClusterFinderMLEM& rhs) |
| 1656 | { |
| 1657 | /// Protected assignement operator |
| 1658 | |
| 1659 | if (this == &rhs) return *this; |
| 1660 | |
| 1661 | AliFatal("Not implemented."); |
| 1662 | |
| 1663 | return *this; |
| 1664 | } |
| 1665 | |
| 1666 | //_____________________________________________________________________________ |
| 1667 | void |
| 1668 | AliMUONClusterFinderMLEM::Neighbours(Int_t cathode, Int_t ix, Int_t iy, |
| 1669 | Int_t& n, Int_t* xList, Int_t* yList) |
| 1670 | { |
| 1671 | /// Get the list of neighbours of pad at (cathode,ix,iy) |
| 1672 | n = 0; |
| 1673 | |
| 1674 | const AliMpVSegmentation* seg = fSegmentation[cathode]; |
| 1675 | |
| 1676 | AliMpPad pad = seg->PadByIndices(AliMpIntPair(ix,iy),kTRUE); |
| 1677 | |
| 1678 | // Define the region to look into : a region slightly bigger |
| 1679 | // than the pad itself (5% bigger), in order to catch first neighbours. |
| 1680 | |
| 1681 | AliMpArea area(pad.Position(),pad.Dimensions()*1.05); |
| 1682 | |
| 1683 | AliMpVPadIterator* it = seg->CreateIterator(area); |
| 1684 | it->First(); |
| 1685 | while ( !it->IsDone() && n < 10 ) |
| 1686 | { |
| 1687 | AliMpPad p = it->CurrentItem(); |
| 1688 | if ( p != pad ) // skip self |
| 1689 | { |
| 1690 | xList[n] = p.GetIndices().GetFirst(); |
| 1691 | yList[n] = p.GetIndices().GetSecond(); |
| 1692 | ++n; |
| 1693 | } |
| 1694 | it->Next(); |
| 1695 | } |
| 1696 | delete it; |
| 1697 | } |
| 1698 | |
| 1699 | //_____________________________________________________________________________ |
| 1700 | void AliMUONClusterFinderMLEM::AddVirtualPad(AliMUONCluster& cluster) |
| 1701 | { |
| 1702 | /// Add virtual pad (with small charge) to improve fit for some |
| 1703 | /// clusters (when pad with max charge is at the extreme of the cluster) |
| 1704 | |
| 1705 | // Get number of pads in X and Y-directions |
| 1706 | Int_t nInX = -1, nInY; |
| 1707 | PadsInXandY(cluster,nInX, nInY); |
| 1708 | ++fNClusters; |
| c0a16418 |
1709 | |
| 1710 | // Add virtual pad only if number of pads per direction == 2 |
| 1711 | if (nInX != 2 && nInY != 2) return; |
| 1712 | |
| 1713 | ++fNAddVirtualPads; |
| 1714 | |
| 1715 | // Find pads with max charge |
| 1716 | Int_t maxpad[2][2] = {{-1, -1}, {-1, -1}}, cath; |
| 1717 | Double_t sigmax[2] = {0}, aamax[2] = {0}; |
| 1718 | for (Int_t j=0; j<cluster.Multiplicity(); ++j) |
| 1719 | { |
| 1720 | AliMUONPad* pad = cluster.Pad(j); |
| 1721 | if (pad->Status() != 0) continue; |
| 1722 | cath = pad->Cathode(); |
| 1723 | if (pad->Charge() > sigmax[cath]) |
| 1724 | { |
| 1725 | maxpad[cath][1] = maxpad[cath][0]; |
| 1726 | aamax[cath] = sigmax[cath]; |
| 1727 | sigmax[cath] = pad->Charge(); |
| 1728 | maxpad[cath][0] = j; |
| 1729 | } |
| 1730 | } |
| 1731 | |
| 1732 | if (maxpad[0][0] >= 0 && maxpad[0][1] < 0 || maxpad[1][0] >= 0 && maxpad[1][1] < 0) |
| 1733 | { |
| 1734 | for (Int_t j=0; j<cluster.Multiplicity(); ++j) |
| 1735 | { |
| 1736 | AliMUONPad* pad = cluster.Pad(j); |
| 1737 | if (pad->Status() != 0) continue; |
| 1738 | cath = pad->Cathode(); |
| 1739 | if (j == maxpad[cath][0] || j == maxpad[cath][1]) continue; |
| 1740 | if ( pad->Charge() > aamax[cath]) |
| 1741 | { |
| 1742 | aamax[cath] = pad->Charge(); |
| 1743 | maxpad[cath][1] = j; |
| 1744 | } |
| 1745 | } |
| 1746 | } |
| 1747 | |
| 1748 | // cout << "-------AddVirtualPad" << endl; |
| 1749 | // cout << Form("nInX %2d nInY %2d",nInX,nInY) << endl; |
| 1750 | // |
| 1751 | // cluster.Print("full"); |
| 1752 | // |
| 1753 | // for ( Int_t i = 0; i < 2; ++i ) |
| 1754 | // { |
| 1755 | // for ( Int_t j = 0; j < 2; ++j ) |
| 1756 | // { |
| 1757 | // cout << Form("maxpad[%d][%d]=%d",i,j,maxpad[i][j]) << endl; |
| 1758 | // } |
| 1759 | // } |
| 1760 | |
| 1761 | // Check for mirrors (side X on cathode 0) |
| 1762 | Bool_t mirror = kFALSE; |
| 1763 | if (maxpad[0][0] >= 0 && maxpad[1][0] >= 0) |
| 1764 | { |
| 1765 | AliMUONPad* maxPadCath[] = { cluster.Pad(maxpad[0][0]), cluster.Pad(maxpad[1][0]) }; |
| 1766 | mirror = maxPadCath[0]->DX() < maxPadCath[0]->DY(); |
| 1767 | if (!mirror && TMath::Abs( maxPadCath[0]->DX() - maxPadCath[1]->DX()) < 0.001) |
| 1768 | { |
| 1769 | // Special case when pads on both cathodes have the same size |
| 1770 | Int_t yud[2] = {0}; |
| 1771 | for (Int_t j = 0; j < cluster.Multiplicity(); ++j) |
| 1772 | { |
| 1773 | AliMUONPad* pad = cluster.Pad(j); |
| 1774 | cath = pad->Cathode(); |
| 1775 | if (j == maxpad[cath][0]) continue; |
| 1776 | if ( pad->Ix() != maxPadCath[cath]->Ix() ) continue; |
| 1777 | if ( TMath::Abs(pad->Iy() - maxPadCath[cath]->Iy()) == 1 ) |
| 1778 | { |
| 1779 | yud[cath]++; |
| 1780 | } |
| 1781 | } |
| 1782 | if (!yud[0]) mirror = kTRUE; // take the other cathode |
| 1783 | } // if (!mirror &&... |
| 1784 | } // if (maxpad[0][0] >= 0 && maxpad[1][0] >= 0) |
| 1785 | |
| 1786 | // // Find neughbours of pads with max charges |
| 1787 | Int_t nn, xList[10], yList[10], ix0, iy0, ix, iy, neighb; |
| 1788 | for (cath=0; cath<2; cath++) |
| 1789 | { |
| 1790 | if (!cath && maxpad[0][0] < 0) continue; // one-sided cluster - cathode 1 |
| 1791 | if (cath && maxpad[1][0] < 0) break; // one-sided cluster - cathode 0 |
| 1792 | if (maxpad[1][0] >= 0) |
| 1793 | { |
| 1794 | if (!mirror) |
| 1795 | { |
| 1796 | if (!cath && nInY != 2) continue; |
| 1797 | if (cath && nInX != 2 && (maxpad[0][0] >= 0 || nInY != 2)) continue; |
| 1798 | } |
| 1799 | else |
| 1800 | { |
| 1801 | if (!cath && nInX != 2) continue; |
| 1802 | if (cath && nInY != 2 && (maxpad[0][0] >= 0 || nInX != 2)) continue; |
| 1803 | } |
| 1804 | } |
| 1805 | |
| 1806 | Int_t iAddX = 0, iAddY = 0, ix1 = 0, iy1 = 0, iPad = 0; |
| 1807 | if (maxpad[0][0] < 0) iPad = 1; |
| 1808 | |
| 1809 | for (iPad=0; iPad<2; iPad++) |
| 1810 | { |
| 1811 | if (maxpad[cath][iPad] < 0) continue; |
| 1812 | if (iPad && !iAddX && !iAddY) break; |
| 1813 | if (iPad && cluster.Pad(maxpad[cath][1])->Charge() / sigmax[cath] < 0.5) break; |
| 1814 | |
| 1815 | Int_t neighbx = 0, neighby = 0; |
| 1816 | ix0 = cluster.Pad(maxpad[cath][iPad])->Ix(); |
| 1817 | iy0 = cluster.Pad(maxpad[cath][iPad])->Iy(); |
| 1818 | Neighbours(cath,ix0,iy0,nn,xList,yList); |
| 1819 | //Float_t zpad; |
| 1820 | for (Int_t j=0; j<nn; j++) { |
| 1821 | if (TMath::Abs(xList[j]-ix0) == 1 || xList[j]*ix0 == -1) neighbx++; |
| 1822 | if (TMath::Abs(yList[j]-iy0) == 1 || yList[j]*iy0 == -1) neighby++; |
| 1823 | } |
| 1824 | if (!mirror) { |
| 1825 | if (cath) neighb = neighbx; |
| 1826 | else neighb = neighby; |
| 1827 | if (maxpad[0][0] < 0) neighb += neighby; |
| 1828 | else if (maxpad[1][0] < 0) neighb += neighbx; |
| 1829 | } else { |
| 1830 | if (!cath) neighb = neighbx; |
| 1831 | else neighb = neighby; |
| 1832 | if (maxpad[0][0] < 0) neighb += neighbx; |
| 1833 | else if (maxpad[1][0] < 0) neighb += neighby; |
| 1834 | } |
| 1835 | |
| 1836 | for (Int_t j=0; j< cluster.Multiplicity(); ++j) |
| 1837 | { |
| 1838 | AliMUONPad* pad = cluster.Pad(j); |
| 1839 | if ( pad->Cathode() != cath) continue; |
| 1840 | ix = pad->Ix(); |
| 1841 | iy = pad->Iy(); |
| 1842 | if (iy == iy0 && ix == ix0) continue; |
| 1843 | for (Int_t k=0; k<nn; ++k) |
| 1844 | { |
| 1845 | if (xList[k] != ix || yList[k] != iy) continue; |
| 1846 | if (!mirror) |
| 1847 | { |
| 1848 | if ((!cath || maxpad[0][0] < 0) && |
| 1849 | (TMath::Abs(iy-iy0) == 1 || iy*iy0 == -1)) { |
| 1850 | if (!iPad && TMath::Abs(ix-ix0) == 1 || ix*ix0 == -1) ix1 = xList[k]; //19-12-05 |
| 1851 | xList[k] = yList[k] = 0; |
| 1852 | neighb--; |
| 1853 | break; |
| 1854 | } |
| 1855 | if ((cath || maxpad[1][0] < 0) && |
| 1856 | (TMath::Abs(ix-ix0) == 1 || ix*ix0 == -1)) { |
| 1857 | if (!iPad) ix1 = xList[k]; //19-12-05 |
| 1858 | xList[k] = yList[k] = 0; |
| 1859 | neighb--; |
| 1860 | } |
| 1861 | } else { |
| 1862 | if ((!cath || maxpad[0][0] < 0) && |
| 1863 | (TMath::Abs(ix-ix0) == 1 || ix*ix0 == -1)) { |
| 1864 | if (!iPad) ix1 = xList[k]; //19-12-05 |
| 1865 | xList[k] = yList[k] = 0; |
| 1866 | neighb--; |
| 1867 | break; |
| 1868 | } |
| 1869 | if ((cath || maxpad[1][0] < 0) && |
| 1870 | (TMath::Abs(iy-iy0) == 1 || iy*iy0 == -1)) { |
| 1871 | xList[k] = yList[k] = 0; |
| 1872 | neighb--; |
| 1873 | } |
| 1874 | } |
| 1875 | break; |
| 1876 | } // for (Int_t k=0; k<nn; |
| 1877 | if (!neighb) break; |
| 1878 | } // for (Int_t j=0; j< cluster.Multiplicity(); |
| 1879 | if (!neighb) continue; |
| 1880 | |
| 1881 | // Add virtual pad |
| 1882 | Int_t npads, isec; |
| 1883 | isec = npads = 0; |
| 1884 | for (Int_t j=0; j<nn; j++) |
| 1885 | { |
| 1886 | if (xList[j] == 0 && yList[j] == 0) continue; |
| 1887 | // npads = fnPads[0] + fnPads[1]; |
| 1888 | // fPadIJ[0][npads] = cath; |
| 1889 | // fPadIJ[1][npads] = 0; |
| 1890 | ix = xList[j]; |
| 1891 | iy = yList[j]; |
| 1892 | if (TMath::Abs(ix-ix0) == 1 || ix*ix0 == -1) { |
| 1893 | if (iy != iy0) continue; // new segmentation - check |
| 1894 | if (nInX != 2) continue; // new |
| 1895 | if (!mirror) { |
| 1896 | if (!cath && maxpad[1][0] >= 0) continue; |
| 1897 | } else { |
| 1898 | if (cath && maxpad[0][0] >= 0) continue; |
| 1899 | } |
| 1900 | if (iPad && !iAddX) continue; |
| 1901 | AliMpPad pad = fSegmentation[cath]->PadByIndices(AliMpIntPair(ix,iy),kTRUE); |
| 1902 | // fXyq[0][npads] = pad.Position().X(); |
| 1903 | // fXyq[1][npads] = pad.Position().Y(); |
| 9bbd7f60 |
1904 | AliMUONPad muonPad(fDetElemId, cath, ix, iy, pad.Position().X(), pad.Position().Y(), |
| 1905 | pad.Dimensions().X(), pad.Dimensions().Y(), 0); |
| c0a16418 |
1906 | // fSegmentation[cath]->GetPadC(ix, iy, fXyq[0][npads], fXyq[1][npads], zpad); |
| 1907 | // if (fXyq[0][npads] > 1.e+5) continue; // temporary fix |
| 1908 | if (muonPad.Coord(0) > 1.e+5) continue; // temporary fix |
| 1909 | if (ix == ix1) continue; //19-12-05 |
| 1910 | if (ix1 == ix0) continue; |
| 1911 | if (maxpad[1][0] < 0 || mirror && maxpad[0][0] >= 0) { |
| 1912 | // if (!iPad) fXyq[2][npads] = TMath::Min (sigmax[0]/100, 5.); |
| 1913 | // else fXyq[2][npads] = TMath::Min (aamax[0]/100, 5.); |
| 1914 | if (!iPad) muonPad.SetCharge(TMath::Min (sigmax[0]/100, 5.)); |
| 1915 | else muonPad.SetCharge(TMath::Min (aamax[0]/100, 5.)); |
| 1916 | } |
| 1917 | else { |
| 1918 | // if (!iPad) fXyq[2][npads] = TMath::Min (sigmax[1]/100, 5.); |
| 1919 | // else fXyq[2][npads] = TMath::Min (aamax[1]/100, 5.); |
| 1920 | if (!iPad) muonPad.SetCharge(TMath::Min (sigmax[1]/100, 5.)); |
| 1921 | else muonPad.SetCharge(TMath::Min (aamax[1]/100, 5.)); |
| 1922 | } |
| 1923 | // fXyq[2][npads] = TMath::Max (fXyq[2][npads], (float)1); |
| 1924 | if (muonPad.Charge() < 1.) muonPad.SetCharge(1.); |
| 1925 | // fXyq[3][npads] = -2; // flag |
| 1926 | // fPadIJ[2][npads] = ix; |
| 1927 | // fPadIJ[3][npads] = iy; |
| 9bbd7f60 |
1928 | muonPad.SetReal(kFALSE); |
| c0a16418 |
1929 | // fnPads[1]++; |
| 1930 | // iAddX = npads; |
| 1931 | iAddX = 1; |
| 9bbd7f60 |
1932 | if (fDebug) printf(" ***** Add virtual pad in X ***** %f %f %f %3d %3d %f %f \n", |
| 1933 | muonPad.Charge(), muonPad.Coord(0), muonPad.Coord(1), ix, iy, |
| 1934 | muonPad.DX(), muonPad.DY()); |
| c0a16418 |
1935 | cluster.AddPad(muonPad); // add pad to the cluster |
| 1936 | ix1 = ix0; |
| 1937 | continue; |
| 1938 | } |
| 1939 | if (nInY != 2) continue; |
| 1940 | if (!mirror && cath && maxpad[0][0] >= 0) continue; |
| 1941 | if (mirror && !cath && maxpad[1][0] >= 0) continue; |
| 1942 | if (TMath::Abs(iy-iy0) == 1 || TMath::Abs(iy*iy0) == 1) { |
| 1943 | if (ix != ix0) continue; // new segmentation - check |
| 1944 | if (iPad && !iAddY) continue; |
| 1945 | AliMpPad pad = fSegmentation[cath]->PadByIndices(AliMpIntPair(ix,iy),kTRUE); |
| 1946 | // fXyq[0][npads] = pad.Position().X(); |
| 1947 | // fXyq[1][npads] = pad.Position().Y(); |
| 1948 | // fSegmentation[cath]->GetPadC(ix, iy, fXyq[0][npads], fXyq[1][npads], zpad); |
| 9bbd7f60 |
1949 | AliMUONPad muonPad(fDetElemId, cath, ix, iy, pad.Position().X(), pad.Position().Y(), |
| 1950 | pad.Dimensions().X(), pad.Dimensions().Y(), 0); |
| c0a16418 |
1951 | if (iy1 == iy0) continue; |
| 1952 | //if (iPad && iy1 == iy0) continue; |
| 1953 | if (maxpad[0][0] < 0 || mirror && maxpad[1][0] >= 0) { |
| 1954 | // if (!iPad) fXyq[2][npads] = TMath::Min (sigmax[1]/15, fgkZeroSuppression); |
| 1955 | // else fXyq[2][npads] = TMath::Min (aamax[1]/15, fgkZeroSuppression); |
| 1956 | if (!iPad) muonPad.SetCharge(TMath::Min (sigmax[1]/15, fgkZeroSuppression)); |
| 1957 | else muonPad.SetCharge(TMath::Min (aamax[1]/15, fgkZeroSuppression)); |
| 1958 | } |
| 1959 | else { |
| 1960 | // if (!iPad) fXyq[2][npads] = TMath::Min (sigmax[0]/15, fgkZeroSuppression); |
| 1961 | // else fXyq[2][npads] = TMath::Min (aamax[0]/15, fgkZeroSuppression); |
| 1962 | if (!iPad) muonPad.SetCharge(TMath::Min (sigmax[0]/15, fgkZeroSuppression)); |
| 1963 | else muonPad.SetCharge(TMath::Min (aamax[0]/15, fgkZeroSuppression)); |
| 1964 | } |
| 1965 | // fXyq[2][npads] = TMath::Max (fXyq[2][npads], (float)1); |
| 1966 | if (muonPad.Charge() < 1.) muonPad.SetCharge(1.); |
| 1967 | // fXyq[3][npads] = -2; // flag |
| 1968 | // fPadIJ[2][npads] = ix; |
| 1969 | // fPadIJ[3][npads] = iy; |
| 9bbd7f60 |
1970 | muonPad.SetReal(kFALSE); |
| c0a16418 |
1971 | // fnPads[1]++; |
| 1972 | // iAddY = npads; |
| 1973 | iAddY = 1; |
| 9bbd7f60 |
1974 | if (fDebug) printf(" ***** Add virtual pad in Y ***** %f %f %f %3d %3d %f %f \n", |
| 1975 | muonPad.Charge(), muonPad.Coord(0), muonPad.Coord(1), ix, iy, |
| 1976 | muonPad.DX(), muonPad.DY()); |
| c0a16418 |
1977 | cluster.AddPad(muonPad); // add pad to the cluster |
| 1978 | iy1 = iy0; |
| 1979 | } |
| 1980 | } // for (Int_t j=0; j<nn; |
| 1981 | } // for (Int_t iPad=0; |
| 1982 | } // for (cath=0; cath<2; |
| 1983 | } |
| 1984 | |
| 1985 | //_____________________________________________________________________________ |
| 1986 | void AliMUONClusterFinderMLEM::PadsInXandY(AliMUONCluster& cluster, |
| 1987 | Int_t &nInX, Int_t &nInY) const |
| 1988 | { |
| 1989 | /// Find number of pads in X and Y-directions (excluding virtual ones and |
| 1990 | /// overflows) |
| 1991 | |
| 1992 | Int_t statusToTest = 1; |
| 1993 | |
| 1994 | if ( nInX < 0 ) statusToTest = 0; |
| 1995 | |
| 1996 | Bool_t mustMatch(kTRUE); |
| 1997 | |
| 1998 | AliMpIntPair cn = cluster.NofPads(statusToTest,mustMatch); |
| 1999 | |
| 2000 | nInX = cn.GetFirst(); |
| 2001 | nInY = cn.GetSecond(); |
| 2002 | } |
| 2003 | |
| 2004 | //_____________________________________________________________________________ |
| 2005 | void AliMUONClusterFinderMLEM::RemovePixel(Int_t i) |
| 2006 | { |
| 2007 | /// Remove pixel at index i |
| 2008 | AliMUONPad* pixPtr = Pixel(i); |
| 2009 | fPixArray->RemoveAt(i); |
| 2010 | delete pixPtr; |
| 2011 | } |
| 2012 | |
| 2013 | //_____________________________________________________________________________ |
| 2014 | void AliMUONClusterFinderMLEM::Simple(AliMUONCluster& cluster) |
| 2015 | { |
| 2016 | /// Process simple cluster (small number of pads) without EM-procedure |
| 2017 | |
| 2018 | Int_t nForFit = 1, clustFit[1] = {0}, nfit; |
| 2019 | Double_t parOk[3] = {0.}; |
| 2020 | TObjArray *clusters[1]; |
| 2021 | clusters[0] = fPixArray; |
| 2022 | |
| 2023 | AliDebug(1,Form("nPix=%d",fPixArray->GetLast()+1)); |
| 2024 | |
| 2025 | for (Int_t i = 0; i < cluster.Multiplicity(); ++i) |
| 2026 | { |
| 2027 | AliMUONPad* pad = cluster.Pad(i); |
| 9bbd7f60 |
2028 | if ( pad->IsSaturated()) |
| c0a16418 |
2029 | { |
| 2030 | pad->SetStatus(-9); |
| 2031 | } |
| 2032 | else |
| 2033 | { |
| 2034 | pad->SetStatus(1); |
| 2035 | } |
| 2036 | } |
| 2037 | nfit = fSplitter->Fit(cluster,1, nForFit, clustFit, clusters, parOk, fClusterList); |
| 2038 | } |
| 2039 | |
| 2040 | //_____________________________________________________________________________ |
| 2041 | AliMUONPad* |
| 2042 | AliMUONClusterFinderMLEM::Pixel(Int_t i) const |
| 2043 | { |
| 2044 | /// Returns pixel at index i |
| 2045 | return static_cast<AliMUONPad*>(fPixArray->UncheckedAt(i)); |
| 2046 | } |
| 2047 | |
| 2048 | //_____________________________________________________________________________ |
| 2049 | void |
| 2050 | AliMUONClusterFinderMLEM::Print(Option_t* what) const |
| 2051 | { |
| 2052 | /// printout |
| 2053 | TString swhat(what); |
| 2054 | swhat.ToLower(); |
| 2055 | if ( swhat.Contains("precluster") ) |
| 2056 | { |
| 2057 | if ( fPreCluster) fPreCluster->Print(); |
| 2058 | } |
| 2059 | } |
| 2060 | |
| 2061 | |
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