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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> | |
a6435fb4 | 47 | #include <TMath.h> |
f6c291ef | 48 | #include "AliCodeTimer.h" |
a6435fb4 | 49 | |
c0a16418 | 50 | /// \cond CLASSIMP |
51 | ClassImp(AliMUONClusterFinderMLEM) | |
52 | /// \endcond | |
53 | ||
54 | const Double_t AliMUONClusterFinderMLEM::fgkZeroSuppression = 6; // average zero suppression value | |
2abdae6e | 55 | //const Double_t AliMUONClusterFinderMLEM::fgkDistancePrecision = 1e-6; // (cm) used to check overlaps and so on |
56 | const Double_t AliMUONClusterFinderMLEM::fgkDistancePrecision = 1e-3; // (cm) used to check overlaps and so on | |
c0a16418 | 57 | const TVector2 AliMUONClusterFinderMLEM::fgkIncreaseSize(-AliMUONClusterFinderMLEM::fgkDistancePrecision,-AliMUONClusterFinderMLEM::fgkDistancePrecision); |
58 | const TVector2 AliMUONClusterFinderMLEM::fgkDecreaseSize(AliMUONClusterFinderMLEM::fgkDistancePrecision,AliMUONClusterFinderMLEM::fgkDistancePrecision); | |
59 | ||
8c718ff8 | 60 | // Status flags for pads |
61 | const Int_t AliMUONClusterFinderMLEM::fgkZero = 0x0; ///< pad "basic" state | |
62 | const Int_t AliMUONClusterFinderMLEM::fgkMustKeep = 0x1; ///< do not kill (for pixels) | |
63 | const Int_t AliMUONClusterFinderMLEM::fgkUseForFit = 0x10; ///< should be used for fit | |
64 | const Int_t AliMUONClusterFinderMLEM::fgkOver = 0x100; ///< processing is over | |
65 | const Int_t AliMUONClusterFinderMLEM::fgkModified = 0x1000; ///< modified pad charge | |
66 | const Int_t AliMUONClusterFinderMLEM::fgkCoupled = 0x10000; ///< coupled pad | |
c0a16418 | 67 | |
68 | //_____________________________________________________________________________ | |
b1a19e07 | 69 | AliMUONClusterFinderMLEM::AliMUONClusterFinderMLEM(Bool_t plot, AliMUONVClusterFinder* clusterFinder) |
c0a16418 | 70 | : AliMUONVClusterFinder(), |
b1a19e07 | 71 | fPreClusterFinder(clusterFinder), |
c0a16418 | 72 | fPreCluster(0x0), |
73 | fClusterList(), | |
74 | fEventNumber(0), | |
75 | fDetElemId(-1), | |
76 | fClusterNumber(0), | |
c80b29a4 | 77 | fHistMlem(0x0), |
78 | fHistAnode(0x0), | |
c0a16418 | 79 | fPixArray(new TObjArray(20)), |
9bbd7f60 | 80 | fDebug(0), |
c0a16418 | 81 | fPlot(plot), |
c0a16418 | 82 | fSplitter(0x0), |
83 | fNClusters(0), | |
84 | fNAddVirtualPads(0) | |
85 | { | |
86 | /// Constructor | |
87 | ||
88 | fSegmentation[1] = fSegmentation[0] = 0x0; | |
89 | ||
9bbd7f60 | 90 | if (fPlot) fDebug = 1; |
c0a16418 | 91 | } |
92 | ||
93 | //_____________________________________________________________________________ | |
94 | AliMUONClusterFinderMLEM::~AliMUONClusterFinderMLEM() | |
95 | { | |
96 | /// Destructor | |
c80b29a4 | 97 | delete fPixArray; fPixArray = 0; |
c0a16418 | 98 | // delete fDraw; |
99 | delete fPreClusterFinder; | |
c0a16418 | 100 | delete fSplitter; |
101 | AliInfo(Form("Total clusters %d AddVirtualPad needed %d", | |
102 | fNClusters,fNAddVirtualPads)); | |
103 | } | |
104 | ||
105 | //_____________________________________________________________________________ | |
106 | Bool_t | |
24935e58 | 107 | AliMUONClusterFinderMLEM::Prepare(Int_t detElemId, |
108 | TClonesArray* pads[2], | |
109 | const AliMpArea& area, | |
110 | const AliMpVSegmentation* seg[2]) | |
c0a16418 | 111 | { |
112 | /// Prepare for clustering | |
2060b217 | 113 | // AliCodeTimerAuto("") |
c0a16418 | 114 | |
115 | for ( Int_t i = 0; i < 2; ++i ) | |
116 | { | |
24935e58 | 117 | fSegmentation[i] = seg[i]; |
c0a16418 | 118 | } |
119 | ||
120 | // Find out the DetElemId | |
24935e58 | 121 | fDetElemId = detElemId; |
c0a16418 | 122 | |
123 | delete fSplitter; | |
124 | fSplitter = new AliMUONClusterSplitterMLEM(fDetElemId,fPixArray); | |
9bbd7f60 | 125 | fSplitter->SetDebug(fDebug); |
c0a16418 | 126 | |
127 | // find out current event number, and reset the cluster number | |
7deb8eb0 | 128 | AliRunLoader *runLoader = AliRunLoader::GetRunLoader(); |
129 | fEventNumber = runLoader ? runLoader->GetEventNumber() : 0; | |
c0a16418 | 130 | fClusterNumber = -1; |
131 | fClusterList.Delete(); | |
132 | ||
b1a19e07 | 133 | AliDebug(3,Form("EVT %d DE %d",fEventNumber,fDetElemId)); |
c0a16418 | 134 | |
24935e58 | 135 | if ( fPreClusterFinder->NeedSegmentation() ) |
136 | { | |
137 | return fPreClusterFinder->Prepare(detElemId,pads,area,seg); | |
138 | } | |
139 | else | |
140 | { | |
141 | return fPreClusterFinder->Prepare(detElemId,pads,area); | |
142 | } | |
c0a16418 | 143 | } |
144 | ||
145 | //_____________________________________________________________________________ | |
146 | AliMUONCluster* | |
147 | AliMUONClusterFinderMLEM::NextCluster() | |
148 | { | |
149 | /// Return next cluster | |
f6c291ef | 150 | // AliCodeTimerAuto("") |
c0a16418 | 151 | |
c0a16418 | 152 | // if the list of clusters is not void, pick one from there |
9bbd7f60 | 153 | TObject* o = fClusterList.At(++fClusterNumber); |
154 | if ( o != 0x0 ) return static_cast<AliMUONCluster*>(o); | |
c0a16418 | 155 | |
156 | //FIXME : at this point, must check whether we've used all the digits | |
157 | //from precluster : if not, let the preclustering know about those unused | |
158 | //digits, so it can reuse them | |
159 | ||
160 | // if the cluster list is exhausted, we need to go to the next | |
161 | // pre-cluster and treat it | |
162 | ||
163 | fPreCluster = fPreClusterFinder->NextCluster(); | |
9bf6860b | 164 | |
165 | fClusterList.Delete(); // reset the list of clusters for this pre-cluster | |
166 | fClusterNumber = -1; //AZ | |
167 | ||
c0a16418 | 168 | if (!fPreCluster) |
169 | { | |
170 | // we are done | |
171 | return 0x0; | |
172 | } | |
173 | ||
c0a16418 | 174 | WorkOnPreCluster(); |
175 | ||
176 | // WorkOnPreCluster may have used only part of the pads, so we check that | |
177 | // now, and let the unused pads be reused by the preclustering... | |
178 | ||
2abdae6e | 179 | Int_t mult = fPreCluster->Multiplicity(); |
180 | for ( Int_t i = 0; i < mult; ++i ) | |
c0a16418 | 181 | { |
182 | AliMUONPad* pad = fPreCluster->Pad(i); | |
183 | if ( !pad->IsUsed() ) | |
184 | { | |
185 | fPreClusterFinder->UsePad(*pad); | |
186 | } | |
187 | } | |
188 | ||
189 | return NextCluster(); | |
190 | } | |
191 | ||
192 | //_____________________________________________________________________________ | |
193 | Bool_t | |
194 | AliMUONClusterFinderMLEM::WorkOnPreCluster() | |
195 | { | |
196 | /// Starting from a precluster, builds a pixel array, and then | |
197 | /// extract clusters from this array | |
198 | ||
2abdae6e | 199 | // AliCodeTimerAuto("") |
9bbd7f60 | 200 | |
201 | if (fDebug) { | |
7deb8eb0 | 202 | cout << " *** Event # " << fEventNumber |
9bbd7f60 | 203 | << " det. elem.: " << fDetElemId << endl; |
2abdae6e | 204 | for (Int_t j = 0; j < fPreCluster->Multiplicity(); ++j) { |
9bbd7f60 | 205 | AliMUONPad* pad = fPreCluster->Pad(j); |
206 | printf(" bbb %3d %1d %8.4f %8.4f %8.4f %8.4f %6.1f %3d %3d %2d %1d %1d \n", | |
207 | j, pad->Cathode(), pad->Coord(0), pad->Coord(1), pad->DX()*2, pad->DY()*2, | |
208 | pad->Charge(), pad->Ix(), pad->Iy(), pad->Status(), pad->IsReal(), pad->IsSaturated()); | |
209 | } | |
210 | } | |
211 | ||
c0a16418 | 212 | AliMUONCluster* cluster = CheckPrecluster(*fPreCluster); |
c0a16418 | 213 | if (!cluster) return kFALSE; |
9bbd7f60 | 214 | |
c0a16418 | 215 | BuildPixArray(*cluster); |
216 | ||
217 | if ( fPixArray->GetLast() < 0 ) | |
218 | { | |
219 | AliDebug(1,"No pixel for the above cluster"); | |
220 | delete cluster; | |
221 | return kFALSE; | |
222 | } | |
223 | ||
224 | // Use MLEM for cluster finder | |
225 | Int_t nMax = 1, localMax[100], maxPos[100]; | |
226 | Double_t maxVal[100]; | |
227 | ||
c0a16418 | 228 | Int_t iSimple = 0, nInX = -1, nInY; |
229 | ||
230 | PadsInXandY(*cluster,nInX, nInY); | |
231 | ||
8c718ff8 | 232 | if (nInX < 4 && nInY < 4) |
233 | { | |
234 | iSimple = 1; // simple cluster | |
235 | } | |
236 | else | |
c0a16418 | 237 | { |
8c718ff8 | 238 | nMax = FindLocalMaxima(fPixArray, localMax, maxVal); // for small clusters just to tag pixels |
239 | if (nMax > 1) { | |
240 | if (cluster->Multiplicity() <= 50) nMax = 1; // for small clusters | |
241 | if (nMax > 1) TMath::Sort(nMax, maxVal, maxPos, kTRUE); // in descending order | |
242 | } | |
c0a16418 | 243 | } |
244 | ||
2abdae6e | 245 | for (Int_t i = 0; i < nMax; ++i) |
c0a16418 | 246 | { |
247 | if (nMax > 1) | |
248 | { | |
249 | FindCluster(*cluster,localMax, maxPos[i]); | |
250 | } | |
2abdae6e | 251 | |
c0a16418 | 252 | MainLoop(*cluster,iSimple); |
2abdae6e | 253 | |
c0a16418 | 254 | if (i < nMax-1) |
255 | { | |
2abdae6e | 256 | Int_t mult = cluster->Multiplicity(); |
257 | for (Int_t j = 0; j < mult; ++j) | |
c0a16418 | 258 | { |
259 | AliMUONPad* pad = cluster->Pad(j); | |
8c718ff8 | 260 | //if ( pad->Status() == 0 ) continue; // pad charge was not modified |
261 | if ( pad->Status() != fgkOver ) continue; // pad was not used | |
262 | //pad->SetStatus(0); | |
263 | pad->SetStatus(fgkZero); | |
c0a16418 | 264 | pad->RevertCharge(); // use backup charge value |
265 | } | |
266 | } | |
267 | } // for (Int_t i=0; i<nMax; | |
c80b29a4 | 268 | delete fHistMlem; |
269 | delete fHistAnode; | |
270 | fHistMlem = fHistAnode = 0x0; | |
c0a16418 | 271 | delete cluster; |
272 | return kTRUE; | |
273 | } | |
274 | ||
275 | //_____________________________________________________________________________ | |
276 | Bool_t | |
277 | AliMUONClusterFinderMLEM::Overlap(const AliMUONPad& pad, const AliMUONPad& pixel) | |
278 | { | |
279 | /// Check if the pad and the pixel overlaps | |
280 | ||
281 | // make a fake pad from the pixel | |
282 | AliMUONPad tmp(pad.DetElemId(),pad.Cathode(),pad.Ix(),pad.Iy(), | |
283 | pixel.Coord(0),pixel.Coord(1), | |
284 | pixel.Size(0),pixel.Size(1),0); | |
285 | ||
286 | return AliMUONPad::AreOverlapping(pad,tmp,fgkDecreaseSize); | |
287 | } | |
288 | ||
289 | //_____________________________________________________________________________ | |
290 | AliMUONCluster* | |
291 | AliMUONClusterFinderMLEM::CheckPrecluster(const AliMUONCluster& origCluster) | |
292 | { | |
293 | /// Check precluster in order to attempt to simplify it (mostly for | |
294 | /// two-cathode preclusters) | |
2abdae6e | 295 | |
24935e58 | 296 | AliCodeTimerAuto("") |
f6c291ef | 297 | |
2abdae6e | 298 | // Disregard small clusters (leftovers from splitting or noise) |
299 | if ((origCluster.Multiplicity()==1 || origCluster.Multiplicity()==2) && | |
300 | origCluster.Charge(0)+origCluster.Charge(1) < 10) | |
c0a16418 | 301 | { |
c0a16418 | 302 | return 0x0; |
303 | } | |
304 | ||
8c718ff8 | 305 | AliMUONCluster* cluster = new AliMUONCluster(origCluster); |
c0a16418 | 306 | |
c0a16418 | 307 | AliDebug(2,"Start of CheckPreCluster="); |
2abdae6e | 308 | //StdoutToAliDebug(2,cluster->Print("full")); |
c0a16418 | 309 | |
c0a16418 | 310 | AliMUONCluster* rv(0x0); |
311 | ||
2abdae6e | 312 | if (cluster->Multiplicity(0) && cluster->Multiplicity(1)) |
c0a16418 | 313 | { |
314 | rv = CheckPreclusterTwoCathodes(cluster); | |
315 | } | |
316 | else | |
317 | { | |
f6c291ef | 318 | rv = cluster; |
c0a16418 | 319 | } |
c0a16418 | 320 | return rv; |
321 | } | |
322 | ||
c0a16418 | 323 | //_____________________________________________________________________________ |
324 | AliMUONCluster* | |
325 | AliMUONClusterFinderMLEM::CheckPreclusterTwoCathodes(AliMUONCluster* cluster) | |
326 | { | |
71a2d3aa | 327 | /// Check two-cathode cluster |
c0a16418 | 328 | |
c0a16418 | 329 | Int_t npad = cluster->Multiplicity(); |
330 | Int_t* flags = new Int_t[npad]; | |
2abdae6e | 331 | for (Int_t j = 0; j < npad; ++j) flags[j] = 0; |
c0a16418 | 332 | |
333 | // Check pad overlaps | |
2abdae6e | 334 | for ( Int_t i = 0; i < npad; ++i) |
c0a16418 | 335 | { |
336 | AliMUONPad* padi = cluster->Pad(i); | |
8c718ff8 | 337 | if ( padi->Cathode() != 0 ) continue; |
2abdae6e | 338 | for (Int_t j = i+1; j < npad; ++j) |
c0a16418 | 339 | { |
340 | AliMUONPad* padj = cluster->Pad(j); | |
8c718ff8 | 341 | if ( padj->Cathode() != 1 ) continue; |
c0a16418 | 342 | if ( !AliMUONPad::AreOverlapping(*padi,*padj,fgkDecreaseSize) ) continue; |
343 | flags[i] = flags[j] = 1; // mark overlapped pads | |
344 | } | |
345 | } | |
346 | ||
347 | // Check if all pads overlap | |
348 | Int_t nFlags=0; | |
2abdae6e | 349 | for (Int_t i = 0; i < npad; ++i) |
c0a16418 | 350 | { |
2abdae6e | 351 | if (!flags[i]) ++nFlags; |
c0a16418 | 352 | } |
353 | ||
354 | if (nFlags > 0) | |
355 | { | |
356 | // not all pads overlap. | |
9bbd7f60 | 357 | if (fDebug) cout << " nFlags: " << nFlags << endl; |
358 | TObjArray toBeRemoved; | |
2abdae6e | 359 | for (Int_t i = 0; i < npad; ++i) |
c0a16418 | 360 | { |
361 | AliMUONPad* pad = cluster->Pad(i); | |
362 | if (flags[i]) continue; | |
363 | Int_t cath = pad->Cathode(); | |
364 | Int_t cath1 = TMath::Even(cath); | |
365 | // Check for edge effect (missing pads on the _other_ cathode) | |
366 | AliMpPad mpPad = fSegmentation[cath1]->PadByPosition(pad->Position(),kFALSE); | |
367 | if (!mpPad.IsValid()) continue; | |
8c718ff8 | 368 | //if (nFlags == 1 && pad->Charge() < fgkZeroSuppression * 3) continue; |
369 | if (nFlags == 1 && pad->Charge() < 20) continue; | |
c0a16418 | 370 | AliDebug(2,Form("Releasing the following pad : de,cath,ix,iy %d,%d,%d,%d charge %e", |
371 | fDetElemId,pad->Cathode(),pad->Ix(),pad->Iy(),pad->Charge())); | |
9bbd7f60 | 372 | toBeRemoved.AddLast(pad); |
c0a16418 | 373 | fPreCluster->Pad(i)->Release(); |
9bbd7f60 | 374 | } |
2abdae6e | 375 | Int_t nRemove = toBeRemoved.GetEntriesFast(); |
376 | for ( Int_t i = 0; i < nRemove; ++i ) | |
9bbd7f60 | 377 | { |
2abdae6e | 378 | cluster->RemovePad(static_cast<AliMUONPad*>(toBeRemoved.UncheckedAt(i))); |
c0a16418 | 379 | } |
380 | } | |
381 | ||
382 | // Check correlations of cathode charges | |
9bbd7f60 | 383 | if ( !cluster->IsSaturated() && cluster->ChargeAsymmetry() > 1 ) |
c0a16418 | 384 | { |
385 | // big difference | |
386 | Int_t cathode = cluster->MaxRawChargeCathode(); | |
8c718ff8 | 387 | Int_t imin(-1); |
388 | Int_t imax(-1); | |
c0a16418 | 389 | Double_t cmax(0); |
390 | Double_t cmin(1E9); | |
391 | ||
392 | // get min and max pad charges on the cathode opposite to the | |
393 | // max pad (given by MaxRawChargeCathode()) | |
394 | // | |
2abdae6e | 395 | Int_t mult = cluster->Multiplicity(); |
396 | for ( Int_t i = 0; i < mult; ++i ) | |
c0a16418 | 397 | { |
398 | AliMUONPad* pad = cluster->Pad(i); | |
399 | if ( pad->Cathode() != cathode || !pad->IsReal() ) | |
400 | { | |
401 | // only consider pads in the opposite cathode, and | |
2abdae6e | 402 | // only consider real pads (i.e. exclude the virtual ones) |
c0a16418 | 403 | continue; |
404 | } | |
405 | if ( pad->Charge() < cmin ) | |
406 | { | |
407 | cmin = pad->Charge(); | |
408 | imin = i; | |
8c718ff8 | 409 | if (imax < 0) { |
410 | imax = imin; | |
411 | cmax = cmin; | |
412 | } | |
c0a16418 | 413 | } |
8c718ff8 | 414 | else if ( pad->Charge() > cmax ) |
c0a16418 | 415 | { |
416 | cmax = pad->Charge(); | |
417 | imax = i; | |
418 | } | |
419 | } | |
420 | AliDebug(2,Form("Pad imin,imax %d,%d cmin,cmax %e,%e", | |
421 | imin,imax,cmin,cmax)); | |
422 | // | |
423 | // arrange pads according to their distance to the max, normalized | |
424 | // to the pad size | |
2abdae6e | 425 | Double_t* dist = new Double_t[mult]; |
c0a16418 | 426 | Double_t dxMin(1E9); |
427 | Double_t dyMin(1E9); | |
428 | Double_t dmin(0); | |
429 | ||
430 | AliMUONPad* padmax = cluster->Pad(imax); | |
431 | ||
2abdae6e | 432 | for ( Int_t i = 0; i < mult; ++i ) |
c0a16418 | 433 | { |
434 | dist[i] = 0.0; | |
435 | if ( i == imax) continue; | |
436 | AliMUONPad* pad = cluster->Pad(i); | |
437 | if ( pad->Cathode() != cathode || !pad->IsReal() ) continue; | |
438 | Double_t dx = (pad->X()-padmax->X())/padmax->DX()/2.0; | |
439 | Double_t dy = (pad->Y()-padmax->Y())/padmax->DY()/2.0; | |
440 | dist[i] = TMath::Sqrt(dx*dx+dy*dy); | |
441 | if ( i == imin ) | |
442 | { | |
443 | dmin = dist[i] + 1E-3; // distance to the pad with minimum charge | |
444 | dxMin = dx; | |
445 | dyMin = dy; | |
446 | } | |
447 | } | |
448 | ||
2abdae6e | 449 | TMath::Sort(mult,dist,flags,kFALSE); // in ascending order |
450 | Double_t xmax(-1), distPrev(999); | |
c0a16418 | 451 | TObjArray toBeRemoved; |
452 | ||
2abdae6e | 453 | for ( Int_t i = 0; i < mult; ++i ) |
c0a16418 | 454 | { |
455 | Int_t indx = flags[i]; | |
456 | AliMUONPad* pad = cluster->Pad(indx); | |
457 | if ( pad->Cathode() != cathode || !pad->IsReal() ) continue; | |
458 | if ( dist[indx] > dmin ) | |
459 | { | |
460 | // farther than the minimum pad | |
461 | Double_t dx = (pad->X()-padmax->X())/padmax->DX()/2.0; | |
462 | Double_t dy = (pad->Y()-padmax->Y())/padmax->DY()/2.0; | |
463 | dx *= dxMin; | |
464 | dy *= dyMin; | |
465 | if (dx >= 0 && dy >= 0) continue; | |
466 | if (TMath::Abs(dx) > TMath::Abs(dy) && dx >= 0) continue; | |
467 | if (TMath::Abs(dy) > TMath::Abs(dx) && dy >= 0) continue; | |
468 | } | |
2abdae6e | 469 | if (dist[indx] > distPrev + 1) break; // overstepping empty pads |
c0a16418 | 470 | if ( pad->Charge() <= cmax || TMath::Abs(dist[indx]-xmax) < 1E-3 ) |
471 | { | |
472 | // release pad | |
473 | if (TMath::Abs(dist[indx]-xmax) < 1.e-3) | |
474 | { | |
475 | cmax = TMath::Max(pad->Charge(),cmax); | |
476 | } | |
477 | else | |
478 | { | |
479 | cmax = pad->Charge(); | |
480 | } | |
481 | xmax = dist[indx]; | |
2abdae6e | 482 | distPrev = dist[indx]; |
c0a16418 | 483 | AliDebug(2,Form("Releasing the following pad : de,cath,ix,iy %d,%d,%d,%d charge %e", |
484 | fDetElemId,pad->Cathode(),pad->Ix(),pad->Iy(), | |
485 | pad->Charge())); | |
486 | ||
487 | toBeRemoved.AddLast(pad); | |
488 | fPreCluster->Pad(indx)->Release(); | |
489 | } | |
490 | } | |
2abdae6e | 491 | Int_t nRemove = toBeRemoved.GetEntriesFast(); |
492 | for ( Int_t i = 0; i < nRemove; ++i ) | |
c0a16418 | 493 | { |
2abdae6e | 494 | cluster->RemovePad(static_cast<AliMUONPad*>(toBeRemoved.UncheckedAt(i))); |
c0a16418 | 495 | } |
496 | delete[] dist; | |
497 | } | |
498 | ||
499 | delete[] flags; | |
500 | ||
501 | AliDebug(2,"End of CheckPreClusterTwoCathodes="); | |
2abdae6e | 502 | //StdoutToAliDebug(2,cluster->Print("full")); |
c0a16418 | 503 | |
504 | return cluster; | |
505 | } | |
506 | ||
507 | //_____________________________________________________________________________ | |
508 | void | |
509 | AliMUONClusterFinderMLEM::CheckOverlaps() | |
510 | { | |
511 | /// For debug only : check if some pixels overlap... | |
512 | ||
513 | Int_t nPix = fPixArray->GetLast()+1; | |
514 | Int_t dummy(0); | |
515 | ||
516 | for ( Int_t i = 0; i < nPix; ++i ) | |
517 | { | |
518 | AliMUONPad* pixelI = Pixel(i); | |
519 | AliMUONPad pi(dummy,dummy,dummy,dummy, | |
520 | pixelI->Coord(0),pixelI->Coord(1), | |
521 | pixelI->Size(0),pixelI->Size(1),0.0); | |
522 | ||
523 | for ( Int_t j = i+1; j < nPix; ++j ) | |
524 | { | |
525 | AliMUONPad* pixelJ = Pixel(j); | |
526 | AliMUONPad pj(dummy,dummy,dummy,dummy, | |
527 | pixelJ->Coord(0),pixelJ->Coord(1), | |
528 | pixelJ->Size(0),pixelJ->Size(1),0.0); | |
529 | AliMpArea area; | |
530 | ||
531 | if ( AliMUONPad::AreOverlapping(pi,pj,fgkDecreaseSize,area) ) | |
532 | { | |
533 | AliInfo(Form("The following 2 pixels (%d and %d) overlap !",i,j)); | |
2abdae6e | 534 | /* |
c0a16418 | 535 | StdoutToAliInfo(pixelI->Print(); |
536 | cout << " Surface = " << pixelI->Size(0)*pixelI->Size(1)*4 << endl; | |
537 | pixelJ->Print(); | |
538 | cout << " Surface = " << pixelJ->Size(0)*pixelJ->Size(1)*4 << endl; | |
539 | cout << " Area surface = " << area.Dimensions().X()*area.Dimensions().Y()*4 << endl; | |
540 | cout << "-------" << endl; | |
541 | ); | |
2abdae6e | 542 | */ |
c0a16418 | 543 | } |
544 | } | |
545 | } | |
546 | } | |
547 | ||
548 | //_____________________________________________________________________________ | |
549 | void AliMUONClusterFinderMLEM::BuildPixArray(AliMUONCluster& cluster) | |
550 | { | |
551 | /// Build pixel array for MLEM method | |
552 | ||
553 | Int_t npad = cluster.Multiplicity(); | |
554 | if (npad<=0) | |
555 | { | |
556 | AliWarning("Got no pad at all ?!"); | |
557 | } | |
558 | ||
559 | fPixArray->Delete(); | |
8c718ff8 | 560 | BuildPixArrayOneCathode(cluster); |
c0a16418 | 561 | |
562 | Int_t nPix = fPixArray->GetLast()+1; | |
563 | ||
2abdae6e | 564 | // AliDebug(2,Form("nPix after BuildPixArray=%d",nPix)); |
c0a16418 | 565 | |
2abdae6e | 566 | if ( nPix > npad ) |
c0a16418 | 567 | { |
2abdae6e | 568 | // AliDebug(2,Form("Will trim number of pixels to number of pads")); |
c0a16418 | 569 | |
570 | // Too many pixels - sort and remove pixels with the lowest signal | |
571 | fPixArray->Sort(); | |
8c718ff8 | 572 | for ( Int_t i = npad; i < nPix; ++i ) |
c0a16418 | 573 | { |
574 | RemovePixel(i); | |
575 | } | |
576 | fPixArray->Compress(); | |
c0a16418 | 577 | } // if (nPix > npad) |
578 | ||
579 | // StdoutToAliDebug(2,cout << "End of BuildPixelArray:" << endl; | |
580 | // fPixArray->Print();); | |
2abdae6e | 581 | //CheckOverlaps();//FIXME : this is for debug only. Remove it. |
c0a16418 | 582 | } |
583 | ||
2abdae6e | 584 | //_____________________________________________________________________________ |
585 | void AliMUONClusterFinderMLEM::BuildPixArrayOneCathode(AliMUONCluster& cluster) | |
586 | { | |
587 | /// Build the pixel array | |
588 | ||
589 | // AliDebug(2,Form("cluster.Multiplicity=%d",cluster.Multiplicity())); | |
590 | ||
2abdae6e | 591 | TVector2 dim = cluster.MinPadDimensions (-1, kFALSE); |
592 | Double_t width[2] = {dim.X(), dim.Y()}, xy0[2]; | |
8c718ff8 | 593 | Int_t found[2] = {0}, mult = cluster.Multiplicity(); |
2abdae6e | 594 | |
8c718ff8 | 595 | for ( Int_t i = 0; i < mult; ++i) { |
2abdae6e | 596 | AliMUONPad* pad = cluster.Pad(i); |
2abdae6e | 597 | for (Int_t j = 0; j < 2; ++j) { |
598 | if (found[j] == 0 && TMath::Abs(pad->Size(j)-width[j]) < fgkDistancePrecision) { | |
599 | xy0[j] = pad->Coord(j); | |
600 | found[j] = 1; | |
601 | } | |
602 | } | |
8c718ff8 | 603 | if (found[0] && found[1]) break; |
2abdae6e | 604 | } |
2abdae6e | 605 | |
2abdae6e | 606 | Double_t min[2], max[2]; |
607 | Int_t cath0 = 0, cath1 = 1; | |
608 | if (cluster.Multiplicity(0) == 0) cath0 = 1; | |
609 | else if (cluster.Multiplicity(1) == 0) cath1 = 0; | |
8c718ff8 | 610 | |
611 | TVector2 leftDown = cluster.Area(cath0).LeftDownCorner(); | |
612 | TVector2 rightUp = cluster.Area(cath0).RightUpCorner(); | |
613 | min[0] = leftDown.X(); | |
614 | min[1] = leftDown.Y(); | |
615 | max[0] = rightUp.X(); | |
616 | max[1] = rightUp.Y(); | |
617 | if (cath1 != cath0) { | |
618 | leftDown = cluster.Area(cath1).LeftDownCorner(); | |
619 | rightUp = cluster.Area(cath1).RightUpCorner(); | |
620 | min[0] = TMath::Max (min[0], leftDown.X()); | |
621 | min[1] = TMath::Max (min[1], leftDown.Y()); | |
622 | max[0] = TMath::Min (max[0], rightUp.X()); | |
623 | max[1] = TMath::Min (max[1], rightUp.Y()); | |
624 | } | |
2abdae6e | 625 | |
626 | // Adjust limits | |
627 | //width[0] /= 2; width[1] /= 2; // just for check | |
628 | Int_t nbins[2]; | |
629 | for (Int_t i = 0; i < 2; ++i) { | |
630 | Double_t dist = (min[i] - xy0[i]) / width[i] / 2; | |
8c718ff8 | 631 | if (TMath::Abs(dist) < 1.e-6) dist = -1.e-6; |
2abdae6e | 632 | min[i] = xy0[i] + (TMath::Nint(dist-TMath::Sign(1.e-6,dist)) |
633 | + TMath::Sign(0.5,dist)) * width[i] * 2; | |
634 | nbins[i] = TMath::Nint ((max[i] - min[i]) / width[i] / 2); | |
635 | if (nbins[i] == 0) ++nbins[i]; | |
636 | max[i] = min[i] + nbins[i] * width[i] * 2; | |
637 | //cout << dist << " " << min[i] << " " << max[i] << " " << nbins[i] << endl; | |
638 | } | |
639 | ||
640 | // Book histogram | |
641 | TH2D *hist1 = new TH2D ("Grid", "", nbins[0], min[0], max[0], nbins[1], min[1], max[1]); | |
642 | TH2D *hist2 = new TH2D ("Entries", "", nbins[0], min[0], max[0], nbins[1], min[1], max[1]); | |
643 | TAxis *xaxis = hist1->GetXaxis(); | |
644 | TAxis *yaxis = hist1->GetYaxis(); | |
645 | ||
646 | // Fill histogram | |
2abdae6e | 647 | for ( Int_t i = 0; i < mult; ++i) { |
648 | AliMUONPad* pad = cluster.Pad(i); | |
649 | Int_t ix0 = xaxis->FindBin(pad->X()); | |
650 | Int_t iy0 = yaxis->FindBin(pad->Y()); | |
c80b29a4 | 651 | PadOverHist(0, ix0, iy0, pad, hist1, hist2); |
2abdae6e | 652 | } |
653 | ||
654 | // Store pixels | |
655 | for (Int_t i = 1; i <= nbins[0]; ++i) { | |
656 | Double_t x = xaxis->GetBinCenter(i); | |
657 | for (Int_t j = 1; j <= nbins[1]; ++j) { | |
658 | if (hist2->GetCellContent(i,j) < 0.1) continue; | |
8c718ff8 | 659 | //if (hist2->GetCellContent(i,j) < 1.1 && cluster.Multiplicity(0) && |
660 | // cluster.Multiplicity(1)) continue; | |
661 | if (cath0 != cath1) { | |
662 | // Two-sided cluster | |
663 | Double_t cont = hist2->GetCellContent(i,j); | |
664 | if (cont < 999.) continue; | |
665 | if (cont-Int_t(cont/1000.)*1000. < 0.5) continue; | |
666 | } | |
2abdae6e | 667 | Double_t y = yaxis->GetBinCenter(j); |
668 | Double_t charge = hist1->GetCellContent(i,j); | |
669 | AliMUONPad* pixPtr = new AliMUONPad(x, y, width[0], width[1], charge); | |
670 | fPixArray->Add(pixPtr); | |
671 | } | |
672 | } | |
8c718ff8 | 673 | //* |
674 | if (fPixArray->GetEntriesFast() == 1) { | |
675 | // Split pixel into 2 | |
676 | AliMUONPad* pixPtr = static_cast<AliMUONPad*> (fPixArray->UncheckedAt(0)); | |
677 | pixPtr->SetSize(0,width[0]/2.); | |
678 | pixPtr->Shift(0,-width[0]/4.); | |
679 | pixPtr = new AliMUONPad(pixPtr->X()+width[0], pixPtr->Y(), width[0]/2., width[1], pixPtr->Charge()); | |
680 | fPixArray->Add(pixPtr); | |
681 | } | |
682 | //*/ | |
2abdae6e | 683 | //fPixArray->Print(); |
684 | delete hist1; | |
685 | delete hist2; | |
686 | } | |
687 | ||
688 | //_____________________________________________________________________________ | |
c80b29a4 | 689 | void AliMUONClusterFinderMLEM::PadOverHist(Int_t idir, Int_t ix0, Int_t iy0, AliMUONPad *pad, |
690 | TH2D *hist1, TH2D *hist2) | |
2abdae6e | 691 | { |
692 | /// "Span" pad over histogram in the direction idir | |
693 | ||
2abdae6e | 694 | TAxis *axis = idir == 0 ? hist1->GetXaxis() : hist1->GetYaxis(); |
8c718ff8 | 695 | Int_t nbins = axis->GetNbins(), cath = pad->Cathode(); |
696 | Double_t bin = axis->GetBinWidth(1), amask = TMath::Power(1000.,cath*1.); | |
2abdae6e | 697 | |
698 | Int_t nbinPad = (Int_t)(pad->Size(idir)/bin*2+fgkDistancePrecision) + 1; // number of bins covered by pad | |
699 | ||
700 | for (Int_t i = 0; i < nbinPad; ++i) { | |
701 | Int_t ixy = idir == 0 ? ix0 + i : iy0 + i; | |
702 | if (ixy > nbins) break; | |
703 | Double_t lowEdge = axis->GetBinLowEdge(ixy); | |
704 | if (lowEdge + fgkDistancePrecision > pad->Coord(idir) + pad->Size(idir)) break; | |
c80b29a4 | 705 | if (idir == 0) PadOverHist(1, ixy, iy0, pad, hist1, hist2); // span in the other direction |
2abdae6e | 706 | else { |
707 | // Fill histogram | |
708 | Double_t cont = pad->Charge(); | |
709 | if (hist2->GetCellContent(ix0, ixy) > 0.1) | |
710 | cont = TMath::Min (hist1->GetCellContent(ix0, ixy), cont); | |
711 | hist1->SetCellContent(ix0, ixy, cont); | |
8c718ff8 | 712 | //hist2->SetCellContent(ix0, ixy, hist2->GetCellContent(ix0, ixy)+1); |
713 | hist2->SetCellContent(ix0, ixy, hist2->GetCellContent(ix0, ixy)+amask); | |
2abdae6e | 714 | } |
715 | } | |
716 | ||
717 | for (Int_t i = -1; i > -nbinPad; --i) { | |
718 | Int_t ixy = idir == 0 ? ix0 + i : iy0 + i; | |
719 | if (ixy < 1) break; | |
720 | Double_t upEdge = axis->GetBinUpEdge(ixy); | |
721 | if (upEdge - fgkDistancePrecision < pad->Coord(idir) - pad->Size(idir)) break; | |
c80b29a4 | 722 | if (idir == 0) PadOverHist(1, ixy, iy0, pad, hist1, hist2); // span in the other direction |
2abdae6e | 723 | else { |
724 | // Fill histogram | |
725 | Double_t cont = pad->Charge(); | |
726 | if (hist2->GetCellContent(ix0, ixy) > 0.1) | |
727 | cont = TMath::Min (hist1->GetCellContent(ix0, ixy), cont); | |
728 | hist1->SetCellContent(ix0, ixy, cont); | |
8c718ff8 | 729 | //hist2->SetCellContent(ix0, ixy, hist2->GetCellContent(ix0, ixy)+1); |
730 | hist2->SetCellContent(ix0, ixy, hist2->GetCellContent(ix0, ixy)+amask); | |
2abdae6e | 731 | } |
732 | } | |
733 | } | |
734 | ||
c0a16418 | 735 | //_____________________________________________________________________________ |
736 | void | |
737 | AliMUONClusterFinderMLEM::Plot(const char* basename) | |
738 | { | |
739 | /// Make a plot and save it as png | |
740 | ||
9bbd7f60 | 741 | return; //AZ |
c0a16418 | 742 | if (!fPlot) return; |
743 | ||
744 | TCanvas* c = new TCanvas("MLEM","MLEM",800,600); | |
745 | c->Draw(); | |
746 | Draw(); | |
747 | c->Modified(); | |
748 | c->Update(); | |
749 | c->Print(Form("%s.EVT%d.DE%d.CLU%d.png",basename,fEventNumber, | |
750 | fDetElemId,fClusterNumber)); | |
751 | } | |
752 | ||
753 | //_____________________________________________________________________________ | |
754 | void | |
755 | AliMUONClusterFinderMLEM::ComputeCoefficients(AliMUONCluster& cluster, | |
756 | Double_t* coef, | |
757 | Double_t* probi) | |
758 | { | |
759 | /// Compute coefficients needed for MLEM algorithm | |
760 | ||
761 | Int_t nPix = fPixArray->GetLast()+1; | |
762 | ||
2abdae6e | 763 | //memset(probi,0,nPix*sizeof(Double_t)); |
764 | for (Int_t j = 0; j < nPix; ++j) probi[j] = 0.; | |
c0a16418 | 765 | |
2abdae6e | 766 | Int_t mult = cluster.Multiplicity(); |
767 | for ( Int_t j = 0; j < mult; ++j ) | |
c0a16418 | 768 | { |
769 | AliMUONPad* pad = cluster.Pad(j); | |
770 | Int_t indx = j*nPix; | |
771 | ||
2abdae6e | 772 | for ( Int_t ipix = 0; ipix < nPix; ++ipix ) |
c0a16418 | 773 | { |
774 | Int_t indx1 = indx + ipix; | |
8c718ff8 | 775 | //if (pad->Status() < 0) |
776 | if (pad->Status() != fgkZero) | |
c0a16418 | 777 | { |
778 | coef[indx1] = 0; | |
779 | continue; | |
780 | } | |
781 | AliMUONPad* pixPtr = Pixel(ipix); | |
782 | // coef is the charge (given by Mathieson integral) on pad, assuming | |
783 | // the Mathieson is center at pixel. | |
784 | coef[indx1] = fSplitter->ChargeIntegration(pixPtr->Coord(0), pixPtr->Coord(1), *pad); | |
2abdae6e | 785 | // AliDebug(2,Form("pad=(%d,%d,%e,%e,%e,%e) pix=(%e,%e,%e,%e) coef %e", |
786 | // pad->Ix(),pad->Iy(), | |
787 | // pad->X(),pad->Y(), | |
788 | // pad->DX(),pad->DY(), | |
789 | // pixPtr->Coord(0),pixPtr->Coord(1), | |
790 | // pixPtr->Size(0),pixPtr->Size(1), | |
791 | // coef[indx1])); | |
c0a16418 | 792 | |
793 | probi[ipix] += coef[indx1]; | |
794 | } | |
795 | } | |
796 | } | |
797 | ||
798 | //_____________________________________________________________________________ | |
799 | Bool_t AliMUONClusterFinderMLEM::MainLoop(AliMUONCluster& cluster, Int_t iSimple) | |
800 | { | |
801 | /// Repeat MLEM algorithm until pixel size becomes sufficiently small | |
802 | ||
2abdae6e | 803 | // AliCodeTimerAuto("") |
f6c291ef | 804 | |
c0a16418 | 805 | Int_t nPix = fPixArray->GetLast()+1; |
806 | ||
807 | AliDebug(2,Form("nPix=%d iSimple=%d, precluster=",nPix,iSimple)); | |
2abdae6e | 808 | //StdoutToAliDebug(2,cluster.Print("full");); |
c0a16418 | 809 | |
810 | if ( nPix < 0 ) | |
811 | { | |
812 | AliDebug(1,"No pixels, why am I here then ?"); | |
813 | } | |
814 | ||
815 | AddVirtualPad(cluster); // add virtual pads if necessary | |
816 | ||
817 | Int_t npadTot = cluster.Multiplicity(); | |
818 | Int_t npadOK = 0; | |
819 | for (Int_t i = 0; i < npadTot; ++i) | |
820 | { | |
8c718ff8 | 821 | //if (cluster.Pad(i)->Status() == 0) ++npadOK; |
822 | if (cluster.Pad(i)->Status() == fgkZero) ++npadOK; | |
c0a16418 | 823 | } |
824 | ||
c0a16418 | 825 | Double_t* coef(0x0); |
826 | Double_t* probi(0x0); | |
8c718ff8 | 827 | Int_t lc(0); // loop counter |
c0a16418 | 828 | |
2abdae6e | 829 | //Plot("mlem.start"); |
8c718ff8 | 830 | AliMUONPad* pixPtr = Pixel(0); |
831 | Double_t xylim[4] = {pixPtr->X(), -pixPtr->X(), pixPtr->Y(), -pixPtr->Y()}; | |
832 | ||
c0a16418 | 833 | while (1) |
834 | { | |
835 | ++lc; | |
c80b29a4 | 836 | delete fHistMlem; |
c0a16418 | 837 | |
838 | AliDebug(2,Form("lc %d nPix %d(%d) npadTot %d npadOK %d",lc,nPix,fPixArray->GetLast()+1,npadTot,npadOK)); | |
839 | AliDebug(2,Form("EVT%d PixArray=",fEventNumber)); | |
2abdae6e | 840 | //StdoutToAliDebug(2,fPixArray->Print("","full")); |
c0a16418 | 841 | |
842 | coef = new Double_t [npadTot*nPix]; | |
843 | probi = new Double_t [nPix]; | |
844 | ||
845 | // Calculate coefficients and pixel visibilities | |
846 | ComputeCoefficients(cluster,coef,probi); | |
847 | ||
2abdae6e | 848 | for (Int_t ipix = 0; ipix < nPix; ++ipix) |
c0a16418 | 849 | { |
850 | if (probi[ipix] < 0.01) | |
851 | { | |
852 | AliMUONPad* pixel = Pixel(ipix); | |
853 | AliDebug(2,Form("Setting the following pixel to invisible as its probi<0.01:")); | |
2abdae6e | 854 | //StdoutToAliDebug(2,cout << Form(" -- ipix %3d --- "); pixel->Print();); |
c0a16418 | 855 | pixel->SetCharge(0); // "invisible" pixel |
856 | } | |
857 | } | |
858 | ||
859 | // MLEM algorithm | |
860 | Mlem(cluster,coef, probi, 15); | |
861 | ||
8c718ff8 | 862 | // Find histogram limits for the 1'st pass only - for others computed below |
863 | if (lc == 1) { | |
864 | for ( Int_t ipix = 1; ipix < nPix; ++ipix ) | |
865 | { | |
866 | pixPtr = Pixel(ipix); | |
867 | for ( Int_t i = 0; i < 2; ++i ) | |
868 | { | |
869 | Int_t indx = i * 2; | |
870 | if (pixPtr->Coord(i) < xylim[indx]) xylim[indx] = pixPtr->Coord(i); | |
871 | else if (-pixPtr->Coord(i) < xylim[indx+1]) xylim[indx+1] = -pixPtr->Coord(i); | |
872 | } | |
873 | } | |
874 | } else pixPtr = Pixel(0); | |
875 | ||
2abdae6e | 876 | for (Int_t i = 0; i < 4; i++) |
c0a16418 | 877 | { |
878 | xylim[i] -= pixPtr->Size(i/2); | |
879 | } | |
c0a16418 | 880 | |
881 | Int_t nx = TMath::Nint ((-xylim[1]-xylim[0])/pixPtr->Size(0)/2); | |
882 | Int_t ny = TMath::Nint ((-xylim[3]-xylim[2])/pixPtr->Size(1)/2); | |
883 | ||
2abdae6e | 884 | //StdoutToAliDebug(2,cout << "pixel used for nx,ny computation : "; pixPtr->Print();); |
c0a16418 | 885 | AliDebug(2,Form("lc %d pixPtr size = %e,%e nx,ny=%d,%d xylim=%e,%e,%e,%e", |
886 | lc,pixPtr->Size(0),pixPtr->Size(1),nx,ny, | |
887 | xylim[0],-xylim[1],xylim[2],-xylim[3] | |
888 | )); | |
889 | ||
c80b29a4 | 890 | fHistMlem = new TH2D("mlem","mlem",nx,xylim[0],-xylim[1],ny,xylim[2],-xylim[3]); |
c0a16418 | 891 | |
2abdae6e | 892 | for (Int_t ipix = 0; ipix < nPix; ++ipix) |
c0a16418 | 893 | { |
bf0d3528 | 894 | AliMUONPad* pixPtr2 = Pixel(ipix); |
895 | fHistMlem->Fill(pixPtr2->Coord(0),pixPtr2->Coord(1),pixPtr2->Charge()); | |
c0a16418 | 896 | } |
897 | ||
898 | // Check if the total charge of pixels is too low | |
899 | Double_t qTot = 0; | |
2abdae6e | 900 | for ( Int_t i = 0; i < nPix; ++i) |
c0a16418 | 901 | { |
902 | qTot += Pixel(i)->Charge(); | |
903 | } | |
904 | ||
905 | if ( qTot < 1.e-4 || ( npadOK < 3 && qTot < 7 ) ) | |
906 | { | |
907 | AliDebug(1,Form("Deleting the above cluster (charge %e too low, npadOK=%d)",qTot,npadOK)); | |
908 | delete [] coef; | |
909 | delete [] probi; | |
c0a16418 | 910 | fPixArray->Delete(); |
2abdae6e | 911 | for ( Int_t i = 0; i < npadTot; ++i) |
c0a16418 | 912 | { |
913 | AliMUONPad* pad = cluster.Pad(i); | |
8c718ff8 | 914 | //if ( pad->Status() == 0) pad->SetStatus(-1); |
915 | if ( pad->Status() == fgkZero) pad->SetStatus(fgkOver); | |
c0a16418 | 916 | } |
917 | return kFALSE; | |
918 | } | |
919 | ||
920 | if (iSimple) | |
921 | { | |
922 | // Simple cluster - skip further passes thru EM-procedure | |
923 | Simple(cluster); | |
924 | delete [] coef; | |
925 | delete [] probi; | |
c0a16418 | 926 | fPixArray->Delete(); |
927 | return kTRUE; | |
928 | } | |
929 | ||
930 | // Calculate position of the center-of-gravity around the maximum pixel | |
931 | Double_t xyCOG[2]; | |
c80b29a4 | 932 | FindCOG(xyCOG); |
c0a16418 | 933 | |
934 | if (TMath::Min(pixPtr->Size(0),pixPtr->Size(1)) < 0.07 && | |
935 | pixPtr->Size(0) > pixPtr->Size(1)) break; | |
936 | ||
937 | // Sort pixels according to the charge | |
8c718ff8 | 938 | MaskPeaks(1); // mask local maxima |
c0a16418 | 939 | fPixArray->Sort(); |
8c718ff8 | 940 | MaskPeaks(0); // unmask local maxima |
c0a16418 | 941 | Double_t pixMin = 0.01*Pixel(0)->Charge(); |
942 | pixMin = TMath::Min(pixMin,50.); | |
943 | ||
944 | // Decrease pixel size and shift pixels to make them centered at | |
945 | // the maximum one | |
946 | Int_t indx = (pixPtr->Size(0)>pixPtr->Size(1)) ? 0 : 1; | |
947 | Int_t ix(1); | |
948 | Double_t width = 0; | |
949 | Double_t shift[2] = { 0.0, 0.0 }; | |
2abdae6e | 950 | for (Int_t i = 0; i < 4; ++i) xylim[i] = 999; |
c0a16418 | 951 | Int_t nPix1 = nPix; |
952 | nPix = 0; | |
2abdae6e | 953 | for (Int_t ipix = 0; ipix < nPix1; ++ipix) |
c0a16418 | 954 | { |
bf0d3528 | 955 | AliMUONPad* pixPtr2 = Pixel(ipix); |
c0a16418 | 956 | if ( nPix >= npadOK // too many pixels already |
957 | || | |
bf0d3528 | 958 | pixPtr2->Charge() < pixMin && pixPtr2->Status() != fgkMustKeep // too low charge |
c0a16418 | 959 | ) |
960 | { | |
961 | RemovePixel(ipix); | |
962 | continue; | |
963 | } | |
2abdae6e | 964 | for (Int_t i = 0; i < 2; ++i) |
c0a16418 | 965 | { |
966 | if (!i) | |
967 | { | |
bf0d3528 | 968 | pixPtr2->SetCharge(10); |
969 | pixPtr2->SetSize(indx, pixPtr2->Size(indx)/2); | |
970 | width = -pixPtr2->Size(indx); | |
971 | pixPtr2->Shift(indx, width); | |
c0a16418 | 972 | // Shift pixel position |
973 | if (ix) | |
974 | { | |
975 | ix = 0; | |
2abdae6e | 976 | for (Int_t j = 0; j < 2; ++j) |
c0a16418 | 977 | { |
bf0d3528 | 978 | shift[j] = pixPtr2->Coord(j) - xyCOG[j]; |
979 | shift[j] -= ((Int_t)(shift[j]/pixPtr2->Size(j)/2))*pixPtr2->Size(j)*2; | |
c0a16418 | 980 | } |
981 | } // if (ix) | |
bf0d3528 | 982 | pixPtr2->Shift(0, -shift[0]); |
983 | pixPtr2->Shift(1, -shift[1]); | |
8c718ff8 | 984 | ++nPix; |
c0a16418 | 985 | } |
8c718ff8 | 986 | else if (nPix < npadOK) |
c0a16418 | 987 | { |
bf0d3528 | 988 | pixPtr2 = new AliMUONPad(*pixPtr2); |
989 | pixPtr2->Shift(indx, -2*width); | |
990 | pixPtr2->SetStatus(fgkZero); | |
991 | fPixArray->Add(pixPtr2); | |
8c718ff8 | 992 | ++nPix; |
c0a16418 | 993 | } |
8c718ff8 | 994 | else continue; // skip adjustment of histo limits |
995 | for (Int_t j = 0; j < 4; ++j) | |
c0a16418 | 996 | { |
bf0d3528 | 997 | xylim[j] = TMath::Min (xylim[j], (j%2 ? -1 : 1)*pixPtr2->Coord(j/2)); |
c0a16418 | 998 | } |
999 | } // for (Int_t i=0; i<2; | |
c0a16418 | 1000 | } // for (Int_t ipix=0; |
1001 | ||
1002 | fPixArray->Compress(); | |
c0a16418 | 1003 | |
1004 | AliDebug(2,Form("After shift:")); | |
2abdae6e | 1005 | //StdoutToAliDebug(2,fPixArray->Print("","full");); |
1006 | //Plot(Form("mlem.lc%d",lc+1)); | |
c0a16418 | 1007 | |
1008 | AliDebug(2,Form(" xyCOG=%9.6f %9.6f xylim=%9.6f,%9.6f,%9.6f,%9.6f", | |
1009 | xyCOG[0],xyCOG[1], | |
1010 | xylim[0],xylim[1], | |
1011 | xylim[2],xylim[3])); | |
1012 | ||
8c718ff8 | 1013 | if (nPix < npadOK) |
c0a16418 | 1014 | { |
bf0d3528 | 1015 | AliMUONPad* pixPtr2 = Pixel(0); |
8c718ff8 | 1016 | // add pixels if the maximum is at the limit of pixel area: |
c0a16418 | 1017 | // start from Y-direction |
1018 | Int_t j = 0; | |
2abdae6e | 1019 | for (Int_t i = 3; i > -1; --i) |
c0a16418 | 1020 | { |
1021 | if (nPix < npadOK && | |
bf0d3528 | 1022 | TMath::Abs((i%2 ? -1 : 1)*xylim[i]-xyCOG[i/2]) < pixPtr2->Size(i/2)) |
c0a16418 | 1023 | { |
8c718ff8 | 1024 | //AliMUONPad* p = static_cast<AliMUONPad*>(pixPtr->Clone()); |
bf0d3528 | 1025 | AliMUONPad* p = new AliMUONPad(*pixPtr2); |
1026 | p->SetCoord(i/2, xyCOG[i/2]+(i%2 ? 2:-2)*pixPtr2->Size(i/2)); | |
8c718ff8 | 1027 | xylim[i] = p->Coord(i/2) * (i%2 ? -1 : 1); // update histo limits |
c0a16418 | 1028 | j = TMath::Even (i/2); |
1029 | p->SetCoord(j, xyCOG[j]); | |
1030 | AliDebug(2,Form("Adding pixel on the edge (i=%d) ",i)); | |
2abdae6e | 1031 | //StdoutToAliDebug(2,cout << " ---- "; |
1032 | // p->Print("corners");); | |
c0a16418 | 1033 | fPixArray->Add(p); |
1034 | ++nPix; | |
1035 | } | |
1036 | } | |
1037 | } | |
c0a16418 | 1038 | nPix = fPixArray->GetEntriesFast(); |
1039 | delete [] coef; | |
1040 | delete [] probi; | |
c0a16418 | 1041 | } // while (1) |
1042 | ||
1043 | AliDebug(2,Form("At the end of while loop nPix=%d : ",fPixArray->GetLast()+1)); | |
2abdae6e | 1044 | //StdoutToAliDebug(2,fPixArray->Print("","full");); |
c0a16418 | 1045 | |
1046 | // remove pixels with low signal or low visibility | |
1047 | // Cuts are empirical !!! | |
c80b29a4 | 1048 | Double_t thresh = TMath::Max (fHistMlem->GetMaximum()/100.,1.); |
c0a16418 | 1049 | thresh = TMath::Min (thresh,50.); |
c0a16418 | 1050 | Double_t charge = 0; |
1051 | ||
c0a16418 | 1052 | // Mark pixels which should be removed |
2abdae6e | 1053 | for (Int_t i = 0; i < nPix; ++i) |
c0a16418 | 1054 | { |
bf0d3528 | 1055 | AliMUONPad* pixPtr2 = Pixel(i); |
1056 | charge = pixPtr2->Charge(); | |
c0a16418 | 1057 | if (charge < thresh) |
1058 | { | |
bf0d3528 | 1059 | pixPtr2->SetCharge(-charge); |
c0a16418 | 1060 | } |
1061 | } | |
1062 | ||
1063 | // Move charge of removed pixels to their nearest neighbour (to keep total charge the same) | |
1064 | Int_t near = 0; | |
2abdae6e | 1065 | for (Int_t i = 0; i < nPix; ++i) |
c0a16418 | 1066 | { |
bf0d3528 | 1067 | AliMUONPad* pixPtr2 = Pixel(i); |
1068 | charge = pixPtr2->Charge(); | |
c0a16418 | 1069 | if (charge > 0) continue; |
bf0d3528 | 1070 | near = FindNearest(pixPtr2); |
1071 | pixPtr2->SetCharge(0); | |
c0a16418 | 1072 | probi[i] = 0; // make it "invisible" |
1073 | AliMUONPad* pnear = Pixel(near); | |
1074 | pnear->SetCharge(pnear->Charge() + (-charge)); | |
1075 | } | |
1076 | Mlem(cluster,coef,probi,2); | |
1077 | ||
1078 | AliDebug(2,Form("Before splitting nPix=%d EVT %d DE %d",fPixArray->GetLast()+1,fEventNumber,fDetElemId)); | |
2abdae6e | 1079 | //StdoutToAliDebug(2,fPixArray->Print("","full");); |
1080 | //Plot("mlem.beforesplit"); | |
c0a16418 | 1081 | |
8c718ff8 | 1082 | // Update histogram |
2abdae6e | 1083 | for (Int_t i = 0; i < nPix; ++i) |
c0a16418 | 1084 | { |
bf0d3528 | 1085 | AliMUONPad* pixPtr2 = Pixel(i); |
1086 | Int_t ix = fHistMlem->GetXaxis()->FindBin(pixPtr2->Coord(0)); | |
1087 | Int_t iy = fHistMlem->GetYaxis()->FindBin(pixPtr2->Coord(1)); | |
1088 | fHistMlem->SetBinContent(ix, iy, pixPtr2->Charge()); | |
c0a16418 | 1089 | } |
1090 | ||
1091 | // Try to split into clusters | |
1092 | Bool_t ok = kTRUE; | |
c80b29a4 | 1093 | if (fHistMlem->GetSum() < 1) |
c0a16418 | 1094 | { |
1095 | ok = kFALSE; | |
1096 | } | |
1097 | else | |
1098 | { | |
c80b29a4 | 1099 | fSplitter->Split(cluster,fHistMlem,coef,fClusterList); |
c0a16418 | 1100 | } |
1101 | ||
1102 | delete [] coef; | |
1103 | delete [] probi; | |
c0a16418 | 1104 | fPixArray->Delete(); |
1105 | ||
1106 | return ok; | |
1107 | } | |
1108 | ||
8c718ff8 | 1109 | //_____________________________________________________________________________ |
1110 | void AliMUONClusterFinderMLEM::MaskPeaks(Int_t mask) | |
1111 | { | |
1112 | /// Mask/unmask pixels corresponding to local maxima (add/subtract 10000 to their charge | |
1113 | /// - to avoid loosing low charge pixels after sorting) | |
1114 | ||
1115 | for (Int_t i = 0; i < fPixArray->GetEntriesFast(); ++i) { | |
1116 | AliMUONPad* pix = Pixel(i); | |
1117 | if (pix->Status() == fgkMustKeep) { | |
1118 | if (mask == 1) pix->SetCharge(pix->Charge()+10000.); | |
1119 | else pix->SetCharge(pix->Charge()-10000.); | |
1120 | } | |
1121 | } | |
1122 | } | |
1123 | ||
c0a16418 | 1124 | //_____________________________________________________________________________ |
1125 | void AliMUONClusterFinderMLEM::Mlem(AliMUONCluster& cluster, | |
1126 | Double_t* coef, Double_t* probi, | |
1127 | Int_t nIter) | |
1128 | { | |
1129 | /// Use MLEM to find pixel charges | |
1130 | ||
1131 | Int_t nPix = fPixArray->GetEntriesFast(); | |
1132 | ||
1133 | Int_t npad = cluster.Multiplicity(); | |
1134 | ||
1135 | Double_t* probi1 = new Double_t[nPix]; | |
2abdae6e | 1136 | Double_t probMax = TMath::MaxElement(nPix,probi); |
c0a16418 | 1137 | |
2abdae6e | 1138 | for (Int_t iter = 0; iter < nIter; ++iter) |
c0a16418 | 1139 | { |
1140 | // Do iterations | |
2abdae6e | 1141 | for (Int_t ipix = 0; ipix < nPix; ++ipix) |
c0a16418 | 1142 | { |
9bbd7f60 | 1143 | Pixel(ipix)->SetChargeBackup(0); |
c0a16418 | 1144 | // Correct each pixel |
1145 | if (probi[ipix] < 0.01) continue; // skip "invisible" pixel | |
1146 | Double_t sum = 0; | |
1147 | probi1[ipix] = probMax; | |
2abdae6e | 1148 | for (Int_t j = 0; j < npad; ++j) |
c0a16418 | 1149 | { |
1150 | AliMUONPad* pad = cluster.Pad(j); | |
8c718ff8 | 1151 | //if (pad->Status() < 0) continue; |
1152 | if (pad->Status() != fgkZero) continue; | |
c0a16418 | 1153 | Double_t sum1 = 0; |
1154 | Int_t indx1 = j*nPix; | |
1155 | Int_t indx = indx1 + ipix; | |
1156 | // Calculate expectation | |
2abdae6e | 1157 | for (Int_t i = 0; i < nPix; ++i) |
c0a16418 | 1158 | { |
1159 | sum1 += Pixel(i)->Charge()*coef[indx1+i]; | |
2abdae6e | 1160 | //cout << i << " " << Pixel(i)->Charge() << " " << coef[indx1+i] << endl; |
c0a16418 | 1161 | } |
2abdae6e | 1162 | if ( pad->IsSaturated() && sum1 > pad->Charge() ) |
c0a16418 | 1163 | { |
c0a16418 | 1164 | // correct for pad charge overflows |
1165 | probi1[ipix] -= coef[indx]; | |
1166 | continue; | |
2abdae6e | 1167 | //sum1 = pad->Charge(); |
c0a16418 | 1168 | } |
1169 | ||
2abdae6e | 1170 | if (sum1 > 1.e-6) sum += pad->Charge()*coef[indx]/sum1; |
c0a16418 | 1171 | } // for (Int_t j=0; |
1172 | AliMUONPad* pixPtr = Pixel(ipix); | |
1173 | if (probi1[ipix] > 1.e-6) | |
1174 | { | |
9bbd7f60 | 1175 | //AZ pixPtr->SetCharge(pixPtr->Charge()*sum/probi1[ipix]); |
1176 | pixPtr->SetChargeBackup(pixPtr->Charge()*sum/probi1[ipix]); | |
c0a16418 | 1177 | } |
2abdae6e | 1178 | //cout << " xxx " << ipix << " " << pixPtr->Charge() << " " << pixPtr->ChargeBackup() << " " << sum << " " << probi1[ipix] << endl; |
c0a16418 | 1179 | } // for (Int_t ipix=0; |
2abdae6e | 1180 | Double_t qTot = 0; |
9bbd7f60 | 1181 | for (Int_t i = 0; i < nPix; ++i) { |
1182 | AliMUONPad* pixPtr = Pixel(i); | |
2abdae6e | 1183 | pixPtr->RevertCharge(); |
1184 | qTot += pixPtr->Charge(); | |
1185 | } | |
1186 | if (qTot < 1.e-6) { | |
1187 | // Can happen in clusters with large number of overflows - speeding up | |
1188 | delete [] probi1; | |
1189 | return; | |
9bbd7f60 | 1190 | } |
c0a16418 | 1191 | } // for (Int_t iter=0; |
1192 | delete [] probi1; | |
1193 | } | |
1194 | ||
1195 | //_____________________________________________________________________________ | |
c80b29a4 | 1196 | void AliMUONClusterFinderMLEM::FindCOG(Double_t *xyc) |
c0a16418 | 1197 | { |
1198 | /// Calculate position of the center-of-gravity around the maximum pixel | |
1199 | ||
1200 | Int_t ixmax, iymax, ix, nsumx=0, nsumy=0, nsum=0; | |
1201 | Int_t i1 = -9, j1 = -9; | |
c80b29a4 | 1202 | fHistMlem->GetMaximumBin(ixmax,iymax,ix); |
1203 | Int_t nx = fHistMlem->GetNbinsX(); | |
1204 | Int_t ny = fHistMlem->GetNbinsY(); | |
1205 | Double_t thresh = fHistMlem->GetMaximum()/10; | |
c0a16418 | 1206 | Double_t x, y, cont, xq=0, yq=0, qq=0; |
1207 | ||
2abdae6e | 1208 | Int_t ie = TMath::Min(ny,iymax+1), je = TMath::Min(nx,ixmax+1); |
1209 | for (Int_t i = TMath::Max(1,iymax-1); i <= ie; ++i) { | |
c80b29a4 | 1210 | y = fHistMlem->GetYaxis()->GetBinCenter(i); |
2abdae6e | 1211 | for (Int_t j = TMath::Max(1,ixmax-1); j <= je; ++j) { |
c80b29a4 | 1212 | cont = fHistMlem->GetCellContent(j,i); |
c0a16418 | 1213 | if (cont < thresh) continue; |
1214 | if (i != i1) {i1 = i; nsumy++;} | |
1215 | if (j != j1) {j1 = j; nsumx++;} | |
c80b29a4 | 1216 | x = fHistMlem->GetXaxis()->GetBinCenter(j); |
c0a16418 | 1217 | xq += x*cont; |
1218 | yq += y*cont; | |
1219 | qq += cont; | |
1220 | nsum++; | |
1221 | } | |
1222 | } | |
1223 | ||
1224 | Double_t cmax = 0; | |
1225 | Int_t i2 = 0, j2 = 0; | |
1226 | x = y = 0; | |
1227 | if (nsumy == 1) { | |
1228 | // one bin in Y - add one more (with the largest signal) | |
2abdae6e | 1229 | for (Int_t i = TMath::Max(1,iymax-1); i <= ie; ++i) { |
c0a16418 | 1230 | if (i == iymax) continue; |
2abdae6e | 1231 | for (Int_t j = TMath::Max(1,ixmax-1); j <= je; ++j) { |
c80b29a4 | 1232 | cont = fHistMlem->GetCellContent(j,i); |
c0a16418 | 1233 | if (cont > cmax) { |
1234 | cmax = cont; | |
c80b29a4 | 1235 | x = fHistMlem->GetXaxis()->GetBinCenter(j); |
1236 | y = fHistMlem->GetYaxis()->GetBinCenter(i); | |
c0a16418 | 1237 | i2 = i; |
1238 | j2 = j; | |
1239 | } | |
1240 | } | |
1241 | } | |
1242 | xq += x*cmax; | |
1243 | yq += y*cmax; | |
1244 | qq += cmax; | |
1245 | if (i2 != i1) nsumy++; | |
1246 | if (j2 != j1) nsumx++; | |
1247 | nsum++; | |
1248 | } // if (nsumy == 1) | |
1249 | ||
1250 | if (nsumx == 1) { | |
1251 | // one bin in X - add one more (with the largest signal) | |
1252 | cmax = x = y = 0; | |
2abdae6e | 1253 | for (Int_t j = TMath::Max(1,ixmax-1); j <= je; ++j) { |
c0a16418 | 1254 | if (j == ixmax) continue; |
2abdae6e | 1255 | for (Int_t i = TMath::Max(1,iymax-1); i <= ie; ++i) { |
c80b29a4 | 1256 | cont = fHistMlem->GetCellContent(j,i); |
c0a16418 | 1257 | if (cont > cmax) { |
1258 | cmax = cont; | |
c80b29a4 | 1259 | x = fHistMlem->GetXaxis()->GetBinCenter(j); |
1260 | y = fHistMlem->GetYaxis()->GetBinCenter(i); | |
c0a16418 | 1261 | i2 = i; |
1262 | j2 = j; | |
1263 | } | |
1264 | } | |
1265 | } | |
1266 | xq += x*cmax; | |
1267 | yq += y*cmax; | |
1268 | qq += cmax; | |
1269 | if (i2 != i1) nsumy++; | |
1270 | if (j2 != j1) nsumx++; | |
1271 | nsum++; | |
1272 | } // if (nsumx == 1) | |
1273 | ||
1274 | xyc[0] = xq/qq; xyc[1] = yq/qq; | |
1275 | AliDebug(2,Form("x,y COG = %e,%e",xyc[0],xyc[1])); | |
1276 | } | |
1277 | ||
1278 | //_____________________________________________________________________________ | |
1279 | Int_t AliMUONClusterFinderMLEM::FindNearest(AliMUONPad *pixPtr0) | |
1280 | { | |
1281 | /// Find the pixel nearest to the given one | |
1282 | /// (algorithm may be not very efficient) | |
1283 | ||
1284 | Int_t nPix = fPixArray->GetEntriesFast(), imin = 0; | |
1285 | Double_t rmin = 99999, dx = 0, dy = 0, r = 0; | |
1286 | Double_t xc = pixPtr0->Coord(0), yc = pixPtr0->Coord(1); | |
1287 | AliMUONPad *pixPtr; | |
1288 | ||
2abdae6e | 1289 | for (Int_t i = 0; i < nPix; ++i) { |
c0a16418 | 1290 | pixPtr = (AliMUONPad*) fPixArray->UncheckedAt(i); |
8c718ff8 | 1291 | if (pixPtr == pixPtr0 || pixPtr->Charge() < 0.5) continue; |
c0a16418 | 1292 | dx = (xc - pixPtr->Coord(0)) / pixPtr->Size(0); |
1293 | dy = (yc - pixPtr->Coord(1)) / pixPtr->Size(1); | |
1294 | r = dx *dx + dy * dy; | |
1295 | if (r < rmin) { rmin = r; imin = i; } | |
1296 | } | |
1297 | return imin; | |
1298 | } | |
1299 | ||
c0a16418 | 1300 | //_____________________________________________________________________________ |
1301 | void | |
1302 | AliMUONClusterFinderMLEM::Paint(Option_t*) | |
1303 | { | |
1304 | /// Paint cluster and pixels | |
1305 | ||
1306 | AliMpArea area(fPreCluster->Area()); | |
1307 | ||
1308 | gPad->Range(area.LeftBorder(),area.DownBorder(),area.RightBorder(),area.UpBorder()); | |
1309 | ||
1310 | gVirtualX->SetFillStyle(1001); | |
1311 | gVirtualX->SetFillColor(3); | |
1312 | gVirtualX->SetLineColor(3); | |
1313 | ||
1314 | Double_t s(1.0); | |
1315 | ||
1316 | for ( Int_t i = 0; i <= fPixArray->GetLast(); ++i) | |
1317 | { | |
1318 | AliMUONPad* pixel = Pixel(i); | |
1319 | ||
1320 | gPad->PaintBox(pixel->Coord(0)-pixel->Size(0)*s, | |
1321 | pixel->Coord(1)-pixel->Size(1)*s, | |
1322 | pixel->Coord(0)+pixel->Size(0)*s, | |
1323 | pixel->Coord(1)+pixel->Size(1)*s); | |
1324 | ||
1325 | // for ( Int_t sign = -1; sign < 2; sign +=2 ) | |
1326 | // { | |
1327 | // gPad->PaintLine(pixel->Coord(0) - pixel->Size(0), | |
1328 | // pixel->Coord(1) + sign*pixel->Size(1), | |
1329 | // pixel->Coord(0) + pixel->Size(0), | |
1330 | // pixel->Coord(1) - sign*pixel->Size(1) | |
1331 | // ); | |
1332 | // } | |
1333 | } | |
1334 | ||
1335 | ||
1336 | gVirtualX->SetFillStyle(0); | |
1337 | ||
1338 | fPreCluster->Paint(); | |
1339 | ||
1340 | gVirtualX->SetLineColor(1); | |
1341 | gVirtualX->SetLineWidth(2); | |
1342 | gVirtualX->SetFillStyle(0); | |
1343 | gVirtualX->SetTextColor(1); | |
1344 | gVirtualX->SetTextAlign(22); | |
1345 | ||
1346 | for ( Int_t i = 0; i <= fPixArray->GetLast(); ++i) | |
1347 | { | |
1348 | AliMUONPad* pixel = Pixel(i); | |
1349 | gPad->PaintBox(pixel->Coord(0)-pixel->Size(0), | |
1350 | pixel->Coord(1)-pixel->Size(1), | |
1351 | pixel->Coord(0)+pixel->Size(0), | |
1352 | pixel->Coord(1)+pixel->Size(1)); | |
1353 | gVirtualX->SetTextSize(pixel->Size(0)*60); | |
1354 | ||
1355 | gPad->PaintText(pixel->Coord(0),pixel->Coord(1),Form("%d",(Int_t)(pixel->Charge()))); | |
1356 | } | |
1357 | } | |
1358 | ||
1359 | //_____________________________________________________________________________ | |
1360 | Int_t AliMUONClusterFinderMLEM::FindLocalMaxima(TObjArray *pixArray, Int_t *localMax, Double_t *maxVal) | |
1361 | { | |
1362 | /// Find local maxima in pixel space for large preclusters in order to | |
1363 | /// try to split them into smaller pieces (to speed up the MLEM procedure) | |
1364 | /// or to find additional fitting seeds if clusters were not completely resolved | |
1365 | ||
1366 | AliDebug(1,Form("nPix=%d",pixArray->GetLast()+1)); | |
1367 | ||
c0a16418 | 1368 | Double_t xylim[4] = {999, 999, 999, 999}; |
1369 | ||
1370 | Int_t nPix = pixArray->GetEntriesFast(); | |
1371 | AliMUONPad *pixPtr = 0; | |
2abdae6e | 1372 | for (Int_t ipix = 0; ipix < nPix; ++ipix) { |
c0a16418 | 1373 | pixPtr = (AliMUONPad*) pixArray->UncheckedAt(ipix); |
2abdae6e | 1374 | for (Int_t i = 0; i < 4; ++i) |
c0a16418 | 1375 | xylim[i] = TMath::Min (xylim[i], (i%2 ? -1 : 1)*pixPtr->Coord(i/2)); |
1376 | } | |
2abdae6e | 1377 | for (Int_t i = 0; i < 4; ++i) xylim[i] -= pixPtr->Size(i/2); |
c0a16418 | 1378 | |
1379 | Int_t nx = TMath::Nint ((-xylim[1]-xylim[0])/pixPtr->Size(0)/2); | |
1380 | Int_t ny = TMath::Nint ((-xylim[3]-xylim[2])/pixPtr->Size(1)/2); | |
c80b29a4 | 1381 | if (pixArray == fPixArray) fHistAnode = new TH2D("anode","anode",nx,xylim[0],-xylim[1],ny,xylim[2],-xylim[3]); |
1382 | else fHistAnode = new TH2D("anode1","anode1",nx,xylim[0],-xylim[1],ny,xylim[2],-xylim[3]); | |
2abdae6e | 1383 | for (Int_t ipix = 0; ipix < nPix; ++ipix) { |
c0a16418 | 1384 | pixPtr = (AliMUONPad*) pixArray->UncheckedAt(ipix); |
c80b29a4 | 1385 | fHistAnode->Fill(pixPtr->Coord(0), pixPtr->Coord(1), pixPtr->Charge()); |
c0a16418 | 1386 | } |
1387 | // if (fDraw && pixArray == fPixArray) fDraw->DrawHist("c2", hist); | |
1388 | ||
2abdae6e | 1389 | Int_t nMax = 0, indx, nxy = ny * nx; |
1390 | Int_t *isLocalMax = new Int_t[nxy]; | |
1391 | for (Int_t i = 0; i < nxy; ++i) isLocalMax[i] = 0; | |
c0a16418 | 1392 | |
2abdae6e | 1393 | for (Int_t i = 1; i <= ny; ++i) { |
c0a16418 | 1394 | indx = (i-1) * nx; |
2abdae6e | 1395 | for (Int_t j = 1; j <= nx; ++j) { |
c80b29a4 | 1396 | if (fHistAnode->GetCellContent(j,i) < 0.5) continue; |
c0a16418 | 1397 | //if (isLocalMax[indx+j-1] < 0) continue; |
1398 | if (isLocalMax[indx+j-1] != 0) continue; | |
c80b29a4 | 1399 | FlagLocalMax(fHistAnode, i, j, isLocalMax); |
c0a16418 | 1400 | } |
1401 | } | |
1402 | ||
2abdae6e | 1403 | for (Int_t i = 1; i <= ny; ++i) { |
c0a16418 | 1404 | indx = (i-1) * nx; |
2abdae6e | 1405 | for (Int_t j = 1; j <= nx; ++j) { |
c0a16418 | 1406 | if (isLocalMax[indx+j-1] > 0) { |
1407 | localMax[nMax] = indx + j - 1; | |
c80b29a4 | 1408 | maxVal[nMax++] = fHistAnode->GetCellContent(j,i); |
1409 | ((AliMUONPad*)fSplitter->BinToPix(fHistAnode, j, i))->SetStatus(fgkMustKeep); | |
85a72902 | 1410 | if (nMax > 99) break; |
c0a16418 | 1411 | } |
1412 | } | |
85a72902 | 1413 | if (nMax > 99) { |
1414 | AliError(" Too many local maxima !!!"); | |
1415 | break; | |
1416 | } | |
c0a16418 | 1417 | } |
1418 | if (fDebug) cout << " Local max: " << nMax << endl; | |
2abdae6e | 1419 | delete [] isLocalMax; |
c0a16418 | 1420 | return nMax; |
1421 | } | |
1422 | ||
1423 | //_____________________________________________________________________________ | |
1424 | void AliMUONClusterFinderMLEM::FlagLocalMax(TH2D *hist, Int_t i, Int_t j, Int_t *isLocalMax) | |
1425 | { | |
1426 | /// Flag pixels (whether or not local maxima) | |
1427 | ||
1428 | Int_t nx = hist->GetNbinsX(); | |
1429 | Int_t ny = hist->GetNbinsY(); | |
1430 | Int_t cont = TMath::Nint (hist->GetCellContent(j,i)); | |
1431 | Int_t cont1 = 0, indx = (i-1)*nx+j-1, indx1 = 0, indx2 = 0; | |
1432 | ||
2abdae6e | 1433 | Int_t ie = i + 2, je = j + 2; |
1434 | for (Int_t i1 = i-1; i1 < ie; ++i1) { | |
c0a16418 | 1435 | if (i1 < 1 || i1 > ny) continue; |
1436 | indx1 = (i1 - 1) * nx; | |
2abdae6e | 1437 | for (Int_t j1 = j-1; j1 < je; ++j1) { |
c0a16418 | 1438 | if (j1 < 1 || j1 > nx) continue; |
1439 | if (i == i1 && j == j1) continue; | |
1440 | indx2 = indx1 + j1 - 1; | |
1441 | cont1 = TMath::Nint (hist->GetCellContent(j1,i1)); | |
1442 | if (cont < cont1) { isLocalMax[indx] = -1; return; } | |
1443 | else if (cont > cont1) isLocalMax[indx2] = -1; | |
1444 | else { // the same charge | |
1445 | isLocalMax[indx] = 1; | |
1446 | if (isLocalMax[indx2] == 0) { | |
1447 | FlagLocalMax(hist, i1, j1, isLocalMax); | |
1448 | if (isLocalMax[indx2] < 0) { isLocalMax[indx] = -1; return; } | |
1449 | else isLocalMax[indx2] = -1; | |
1450 | } | |
1451 | } | |
1452 | } | |
1453 | } | |
1454 | isLocalMax[indx] = 1; // local maximum | |
1455 | } | |
1456 | ||
1457 | //_____________________________________________________________________________ | |
1458 | void AliMUONClusterFinderMLEM::FindCluster(AliMUONCluster& cluster, | |
1459 | Int_t *localMax, Int_t iMax) | |
1460 | { | |
1461 | /// Find pixel cluster around local maximum \a iMax and pick up pads | |
1462 | /// overlapping with it | |
1463 | ||
2abdae6e | 1464 | /* Just for check |
1465 | TCanvas* c = new TCanvas("Anode","Anode",800,600); | |
1466 | c->cd(); | |
1467 | hist->Draw("lego1Fb"); // debug | |
1468 | c->Update(); | |
1469 | Int_t tmp; | |
1470 | cin >> tmp; | |
1471 | */ | |
c80b29a4 | 1472 | Int_t nx = fHistAnode->GetNbinsX(); |
1473 | Int_t ny = fHistAnode->GetNbinsY(); | |
c0a16418 | 1474 | Int_t ic = localMax[iMax] / nx + 1; |
1475 | Int_t jc = localMax[iMax] % nx + 1; | |
2abdae6e | 1476 | Int_t nxy = ny * nx; |
1477 | Bool_t *used = new Bool_t[nxy]; | |
1478 | for (Int_t i = 0; i < nxy; ++i) used[i] = kFALSE; | |
c0a16418 | 1479 | |
1480 | // Drop all pixels from the array - pick up only the ones from the cluster | |
1481 | fPixArray->Delete(); | |
1482 | ||
c80b29a4 | 1483 | Double_t wx = fHistAnode->GetXaxis()->GetBinWidth(1)/2; |
1484 | Double_t wy = fHistAnode->GetYaxis()->GetBinWidth(1)/2; | |
1485 | Double_t yc = fHistAnode->GetYaxis()->GetBinCenter(ic); | |
1486 | Double_t xc = fHistAnode->GetXaxis()->GetBinCenter(jc); | |
1487 | Double_t cont = fHistAnode->GetCellContent(jc,ic); | |
c0a16418 | 1488 | fPixArray->Add(new AliMUONPad (xc, yc, wx, wy, cont)); |
1489 | used[(ic-1)*nx+jc-1] = kTRUE; | |
c80b29a4 | 1490 | AddBinSimple(fHistAnode, ic, jc); |
2abdae6e | 1491 | //fSplitter->AddBin(hist, ic, jc, 1, used, (TObjArray*)0); // recursive call |
c0a16418 | 1492 | |
1493 | Int_t nPix = fPixArray->GetEntriesFast(); | |
1494 | Int_t npad = cluster.Multiplicity(); | |
1495 | ||
2abdae6e | 1496 | for (Int_t i = 0; i < nPix; ++i) |
c0a16418 | 1497 | { |
1498 | AliMUONPad* pixPtr = Pixel(i); | |
1499 | pixPtr->SetSize(0,wx); | |
1500 | pixPtr->SetSize(1,wy); | |
1501 | } | |
1502 | ||
1503 | // Pick up pads which overlap with found pixels | |
2abdae6e | 1504 | for (Int_t i = 0; i < npad; ++i) |
c0a16418 | 1505 | { |
8c718ff8 | 1506 | //cluster.Pad(i)->SetStatus(-1); |
1507 | cluster.Pad(i)->SetStatus(fgkOver); // just the dirty trick | |
c0a16418 | 1508 | } |
1509 | ||
2abdae6e | 1510 | for (Int_t i = 0; i < nPix; ++i) |
c0a16418 | 1511 | { |
1512 | AliMUONPad* pixPtr = Pixel(i); | |
2abdae6e | 1513 | for (Int_t j = 0; j < npad; ++j) |
c0a16418 | 1514 | { |
1515 | AliMUONPad* pad = cluster.Pad(j); | |
8c718ff8 | 1516 | //if (pad->Status() == 0) continue; |
1517 | if (pad->Status() == fgkZero) continue; | |
c0a16418 | 1518 | if ( Overlap(*pad,*pixPtr) ) |
1519 | { | |
8c718ff8 | 1520 | //pad->SetStatus(0); |
1521 | pad->SetStatus(fgkZero); | |
2abdae6e | 1522 | if (fDebug) { cout << j << " "; pad->Print("full"); } |
c0a16418 | 1523 | } |
1524 | } | |
1525 | } | |
1526 | ||
2abdae6e | 1527 | delete [] used; |
1528 | } | |
1529 | ||
1530 | //_____________________________________________________________________________ | |
1531 | void | |
c80b29a4 | 1532 | AliMUONClusterFinderMLEM::AddBinSimple(TH2D *hist, Int_t ic, Int_t jc) |
2abdae6e | 1533 | { |
1534 | /// Add adjacent bins (+-1 in X and Y) to the cluster | |
1535 | ||
c80b29a4 | 1536 | Int_t nx = hist->GetNbinsX(); |
1537 | Int_t ny = hist->GetNbinsY(); | |
1538 | Double_t cont1, cont = hist->GetCellContent(jc,ic); | |
2abdae6e | 1539 | AliMUONPad *pixPtr = 0; |
1540 | ||
1541 | Int_t ie = TMath::Min(ic+1,ny), je = TMath::Min(jc+1,nx); | |
1542 | for (Int_t i = TMath::Max(ic-1,1); i <= ie; ++i) { | |
1543 | for (Int_t j = TMath::Max(jc-1,1); j <= je; ++j) { | |
c80b29a4 | 1544 | cont1 = hist->GetCellContent(j,i); |
2abdae6e | 1545 | if (cont1 > cont) continue; |
1546 | if (cont1 < 0.5) continue; | |
c80b29a4 | 1547 | pixPtr = new AliMUONPad (hist->GetXaxis()->GetBinCenter(j), |
1548 | hist->GetYaxis()->GetBinCenter(i), 0, 0, cont1); | |
2abdae6e | 1549 | fPixArray->Add(pixPtr); |
1550 | } | |
1551 | } | |
c0a16418 | 1552 | } |
1553 | ||
1554 | //_____________________________________________________________________________ | |
1555 | AliMUONClusterFinderMLEM& | |
1556 | AliMUONClusterFinderMLEM::operator=(const AliMUONClusterFinderMLEM& rhs) | |
1557 | { | |
1558 | /// Protected assignement operator | |
1559 | ||
1560 | if (this == &rhs) return *this; | |
1561 | ||
1562 | AliFatal("Not implemented."); | |
1563 | ||
1564 | return *this; | |
1565 | } | |
1566 | ||
c0a16418 | 1567 | //_____________________________________________________________________________ |
1568 | void AliMUONClusterFinderMLEM::AddVirtualPad(AliMUONCluster& cluster) | |
1569 | { | |
2abdae6e | 1570 | /// Add virtual pad (with small charge) to improve fit for clusters |
1571 | /// with number of pads == 2 per direction | |
c0a16418 | 1572 | |
2abdae6e | 1573 | // Find out non-bending and bending planes |
1574 | Int_t nonb[2] = {1, 0}; // non-bending and bending cathodes | |
c0a16418 | 1575 | |
2abdae6e | 1576 | TVector2 dim0 = cluster.MinPadDimensions(0, 0, kTRUE); |
1577 | TVector2 dim1 = cluster.MinPadDimensions(1, 0, kTRUE); | |
1578 | if (dim0.X() < dim1.X() - fgkDistancePrecision) { | |
1579 | nonb[0] = 0; | |
1580 | nonb[1] = 1; | |
1581 | } | |
1582 | ||
1583 | Bool_t same = kFALSE; | |
1584 | if (TMath::Abs(dim0.Y()-dim1.Y()) < fgkDistancePrecision) same = kTRUE; // the same pad size on both planes | |
1585 | ||
1586 | AliMpIntPair cn; | |
1587 | Bool_t check[2] = {kFALSE, kFALSE}; | |
1588 | Int_t nxy[2]; | |
1589 | nxy[0] = nxy[1] = 0; | |
1590 | for (Int_t inb = 0; inb < 2; ++inb) { | |
1591 | cn = cluster.NofPads(nonb[inb], 0, kTRUE); | |
1592 | if (inb == 0 && cn.GetFirst() == 2) check[inb] = kTRUE; // check non-bending plane | |
1593 | else if (inb == 1 && cn.GetSecond() == 2) check[inb] = kTRUE; // check bending plane | |
1594 | if (same) { | |
1595 | nxy[0] = TMath::Max (nxy[0], cn.GetFirst()); | |
1596 | nxy[1] = TMath::Max (nxy[1], cn.GetSecond()); | |
1597 | if (inb == 0 && nxy[0] < 2) nonb[inb] = !nonb[inb]; | |
1598 | else if (inb == 1 && cn.GetSecond() < 2) nonb[inb] = !nonb[inb]; | |
c0a16418 | 1599 | } |
1600 | } | |
2abdae6e | 1601 | if (same) { |
1602 | if (nxy[0] > 2) check[0] = kFALSE; | |
1603 | if (nxy[1] > 2) check[1] = kFALSE; | |
1604 | } | |
1605 | if (!check[0] && !check[1]) return; | |
1606 | ||
1607 | for (Int_t inb = 0; inb < 2; ++inb) { | |
1608 | if (!check[inb]) continue; | |
1609 | ||
1610 | // Find pads with maximum and next to maximum charges | |
1611 | Int_t maxPads[2] = {-1, -1}; | |
1612 | Double_t amax[2] = {0}; | |
1613 | Int_t mult = cluster.Multiplicity(); | |
1614 | for (Int_t j = 0; j < mult; ++j) { | |
1615 | AliMUONPad *pad = cluster.Pad(j); | |
1616 | if (pad->Cathode() != nonb[inb]) continue; | |
1617 | for (Int_t j2 = 0; j2 < 2; ++j2) { | |
1618 | if (pad->Charge() > amax[j2]) { | |
1619 | if (j2 == 0) { amax[1] = amax[0]; maxPads[1] = maxPads[0]; } | |
1620 | amax[j2] = pad->Charge(); | |
1621 | maxPads[j2] = j; | |
1622 | break; | |
1623 | } | |
c0a16418 | 1624 | } |
1625 | } | |
c0a16418 | 1626 | |
2abdae6e | 1627 | // Find min and max dimensions of the cluster |
1628 | Double_t limits[2] = {9999, -9999}; | |
1629 | for (Int_t j = 0; j < mult; ++j) { | |
1630 | AliMUONPad *pad = cluster.Pad(j); | |
1631 | if (pad->Cathode() != nonb[inb]) continue; | |
1632 | if (pad->Coord(inb) < limits[0]) limits[0] = pad->Coord(inb); | |
1633 | if (pad->Coord(inb) > limits[1]) limits[1] = pad->Coord(inb); | |
c0a16418 | 1634 | } |
2abdae6e | 1635 | |
1636 | // Loop over max and next to max pads | |
1637 | Bool_t add = kFALSE; | |
1638 | Int_t idirAdd = 0; | |
1639 | for (Int_t j = 0; j < 2; ++j) { | |
1640 | if (j == 1) { | |
1641 | if (maxPads[j] < 0) continue; | |
1642 | if (!add) break; | |
1643 | if (amax[1] / amax[0] < 0.5) break; | |
c0a16418 | 1644 | } |
2abdae6e | 1645 | // Check if pad at the cluster limit |
1646 | AliMUONPad *pad = cluster.Pad(maxPads[j]); | |
1647 | Int_t idir = 0; | |
1648 | if (TMath::Abs(pad->Coord(inb)-limits[0]) < fgkDistancePrecision) idir = -1; | |
1649 | else if (TMath::Abs(pad->Coord(inb)-limits[1]) < fgkDistancePrecision) idir = 1; | |
1650 | else { | |
1651 | //cout << " *** Pad not at the cluster limit: " << j << endl; | |
1652 | break; | |
c0a16418 | 1653 | } |
2abdae6e | 1654 | if (j == 1 && idir == idirAdd) break; // this pad has been already added |
1655 | ||
1656 | // Add pad (if it exists) | |
1657 | TVector2 pos; | |
1658 | if (inb == 0) pos.Set (pad->X() + idir * (pad->DX()+fgkDistancePrecision), pad->Y()); | |
1659 | else pos.Set (pad->X(), pad->Y() + idir * (pad->DY()+fgkDistancePrecision)); | |
1660 | //AliMpPad mppad = fSegmentation[nonb[inb]]->PadByPosition(pos,kTRUE); | |
1661 | AliMpPad mppad = fSegmentation[nonb[inb]]->PadByPosition(pos,kFALSE); | |
1662 | if (!mppad.IsValid()) continue; // non-existing pad | |
1663 | cn = mppad.GetIndices(); | |
1664 | AliMUONPad muonPad(fDetElemId, nonb[inb], cn.GetFirst(), cn.GetSecond(), | |
1665 | mppad.Position().X(), mppad.Position().Y(), | |
1666 | mppad.Dimensions().X(), mppad.Dimensions().Y(), 0); | |
1667 | if (inb == 0) muonPad.SetCharge(TMath::Min (amax[j]/100, 5.)); | |
8c718ff8 | 1668 | //else muonPad.SetCharge(TMath::Min (amax[j]/15, fgkZeroSuppression)); |
1669 | else muonPad.SetCharge(TMath::Min (amax[j]/15, 6.)); | |
2abdae6e | 1670 | if (muonPad.Charge() < 1.) muonPad.SetCharge(1.); |
1671 | muonPad.SetReal(kFALSE); | |
1672 | if (fDebug) printf(" ***** Add virtual pad in %d direction ***** %f %f %f %3d %3d %f %f \n", | |
1673 | inb, muonPad.Charge(), muonPad.X(), muonPad.Y(), muonPad.Ix(), | |
1674 | muonPad.Iy(), muonPad.DX(), muonPad.DY()); | |
1675 | cluster.AddPad(muonPad); // add pad to the cluster | |
1676 | add = kTRUE; | |
1677 | idirAdd = idir; | |
1678 | } | |
1679 | } | |
c0a16418 | 1680 | } |
1681 | ||
1682 | //_____________________________________________________________________________ | |
1683 | void AliMUONClusterFinderMLEM::PadsInXandY(AliMUONCluster& cluster, | |
1684 | Int_t &nInX, Int_t &nInY) const | |
1685 | { | |
1686 | /// Find number of pads in X and Y-directions (excluding virtual ones and | |
1687 | /// overflows) | |
1688 | ||
8c718ff8 | 1689 | //Int_t statusToTest = 1; |
1690 | Int_t statusToTest = fgkUseForFit; | |
c0a16418 | 1691 | |
8c718ff8 | 1692 | //if ( nInX < 0 ) statusToTest = 0; |
1693 | if ( nInX < 0 ) statusToTest = fgkZero; | |
c0a16418 | 1694 | |
1695 | Bool_t mustMatch(kTRUE); | |
1696 | ||
1697 | AliMpIntPair cn = cluster.NofPads(statusToTest,mustMatch); | |
1698 | ||
1699 | nInX = cn.GetFirst(); | |
1700 | nInY = cn.GetSecond(); | |
1701 | } | |
1702 | ||
1703 | //_____________________________________________________________________________ | |
1704 | void AliMUONClusterFinderMLEM::RemovePixel(Int_t i) | |
1705 | { | |
1706 | /// Remove pixel at index i | |
1707 | AliMUONPad* pixPtr = Pixel(i); | |
1708 | fPixArray->RemoveAt(i); | |
1709 | delete pixPtr; | |
1710 | } | |
1711 | ||
1712 | //_____________________________________________________________________________ | |
1713 | void AliMUONClusterFinderMLEM::Simple(AliMUONCluster& cluster) | |
1714 | { | |
1715 | /// Process simple cluster (small number of pads) without EM-procedure | |
1716 | ||
1717 | Int_t nForFit = 1, clustFit[1] = {0}, nfit; | |
1718 | Double_t parOk[3] = {0.}; | |
1719 | TObjArray *clusters[1]; | |
1720 | clusters[0] = fPixArray; | |
1721 | ||
1722 | AliDebug(1,Form("nPix=%d",fPixArray->GetLast()+1)); | |
1723 | ||
2abdae6e | 1724 | Int_t mult = cluster.Multiplicity(); |
1725 | for (Int_t i = 0; i < mult; ++i) | |
c0a16418 | 1726 | { |
1727 | AliMUONPad* pad = cluster.Pad(i); | |
8c718ff8 | 1728 | /* |
9bbd7f60 | 1729 | if ( pad->IsSaturated()) |
c0a16418 | 1730 | { |
1731 | pad->SetStatus(-9); | |
1732 | } | |
1733 | else | |
1734 | { | |
1735 | pad->SetStatus(1); | |
1736 | } | |
8c718ff8 | 1737 | */ |
1738 | if (!pad->IsSaturated()) pad->SetStatus(fgkUseForFit); | |
c0a16418 | 1739 | } |
c80b29a4 | 1740 | nfit = fSplitter->Fit(cluster,1, nForFit, clustFit, clusters, parOk, fClusterList, fHistMlem); |
c0a16418 | 1741 | } |
1742 | ||
1743 | //_____________________________________________________________________________ | |
1744 | AliMUONPad* | |
1745 | AliMUONClusterFinderMLEM::Pixel(Int_t i) const | |
1746 | { | |
1747 | /// Returns pixel at index i | |
1748 | return static_cast<AliMUONPad*>(fPixArray->UncheckedAt(i)); | |
1749 | } | |
1750 | ||
1751 | //_____________________________________________________________________________ | |
1752 | void | |
1753 | AliMUONClusterFinderMLEM::Print(Option_t* what) const | |
1754 | { | |
1755 | /// printout | |
1756 | TString swhat(what); | |
1757 | swhat.ToLower(); | |
1758 | if ( swhat.Contains("precluster") ) | |
1759 | { | |
1760 | if ( fPreCluster) fPreCluster->Print(); | |
1761 | } | |
1762 | } | |
1763 | ||
1764 |