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