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- Added handling of tracks and file mask (used when merging different files).
[u/mrichter/AliRoot.git] / MUON / AliMUONClusterFinderAZ.cxx
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30178c30 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
0627f609 18// Clusterizer class developed by A. Zinchenko (Dubna), based on the
19// Expectation-Maximization algorithm
0df3ca52 20
ae17f568 21#include <stdlib.h>
0df3ca52 22#include <Riostream.h>
0df3ca52 23#include <TH2.h>
0df3ca52 24#include <TMinuit.h>
25#include <TMatrixD.h>
26
30178c30 27#include "AliMUONClusterFinderAZ.h"
1af223d7 28#include "AliMUONClusterDrawAZ.h"
0627f609 29#include "AliMUONVGeometryDESegmentation.h"
30#include "AliMUONGeometryModuleTransformer.h"
0df3ca52 31#include "AliRun.h"
32#include "AliMUON.h"
0df3ca52 33#include "AliMUONDigit.h"
0df3ca52 34#include "AliMUONRawCluster.h"
35#include "AliMUONClusterInput.h"
36#include "AliMUONPixel.h"
0627f609 37#include "AliMUONMathieson.h"
8c343c7c 38#include "AliLog.h"
0df3ca52 39
0df3ca52 40ClassImp(AliMUONClusterFinderAZ)
0558a292 41
343146bf 42 const Double_t AliMUONClusterFinderAZ::fgkCouplMin = 1.e-3; // threshold on coupling
0627f609 43 const Double_t AliMUONClusterFinderAZ::fgkZeroSuppression = 6; // average zero suppression value
44 const Double_t AliMUONClusterFinderAZ::fgkSaturation = 3000; // average saturation level
0558a292 45 AliMUONClusterFinderAZ* AliMUONClusterFinderAZ::fgClusterFinder = 0x0;
46 TMinuit* AliMUONClusterFinderAZ::fgMinuit = 0x0;
2b1e4f0e 47//FILE *lun1 = fopen("nxny.dat","w");
0df3ca52 48
0df3ca52 49//_____________________________________________________________________________
1af223d7 50AliMUONClusterFinderAZ::AliMUONClusterFinderAZ(Bool_t draw)
74f7bbc5 51 : AliMUONClusterFinderVS()
0df3ca52 52{
53// Constructor
af34d705 54 fnPads[0]=fnPads[1]=0;
55
56 for (Int_t i=0; i<7; i++)
57 for (Int_t j=0; j<fgkDim; j++)
58 fXyq[i][j]= 9999.;
59
0627f609 60 for (Int_t i=0; i<4; i++)
61 for (Int_t j=0; j<fgkDim; j++)
af34d705 62 fPadIJ[i][j]=-1;
0627f609 63
64 for (Int_t i=0; i<2; i++)
65 for (Int_t j=0; j<fgkDim; j++)
af34d705 66 fUsed[i][j] = 0;
af34d705 67
0627f609 68 fSegmentation[1] = fSegmentation[0] = 0x0;
af34d705 69
0627f609 70 fZpad = 0;
af34d705 71 fQtot = 0;
0627f609 72 fPadBeg[0] = fPadBeg[1] = fCathBeg = fNpar = fnCoupled = 0;
af34d705 73
0df3ca52 74 if (!fgMinuit) fgMinuit = new TMinuit(8);
af34d705 75 if (!fgClusterFinder) fgClusterFinder = this;
0df3ca52 76 fPixArray = new TObjArray(20);
af34d705 77
0627f609 78 fDebug = 0; //0;
79 fReco = 1;
80 fDraw = 0x0;
1af223d7 81 if (draw) {
82 fDebug = 1;
cc87ebcd 83 fReco = 0;
1af223d7 84 fDraw = new AliMUONClusterDrawAZ(this);
85 }
cc87ebcd 86 cout << " *** Running AZ cluster finder *** " << endl;
0df3ca52 87}
88
74f7bbc5 89//_____________________________________________________________________________
90AliMUONClusterFinderAZ::AliMUONClusterFinderAZ(const AliMUONClusterFinderAZ& rhs)
91 : AliMUONClusterFinderVS(rhs)
92{
93// Protected copy constructor
94
8c343c7c 95 AliFatal("Not implemented.");
74f7bbc5 96}
97
0df3ca52 98//_____________________________________________________________________________
99AliMUONClusterFinderAZ::~AliMUONClusterFinderAZ()
100{
101 // Destructor
102 delete fgMinuit; fgMinuit = 0; delete fPixArray; fPixArray = 0;
1af223d7 103 delete fDraw;
0df3ca52 104}
105
106//_____________________________________________________________________________
107void AliMUONClusterFinderAZ::FindRawClusters()
108{
109// To provide the same interface as in AliMUONClusterFinderVS
110
1af223d7 111 ResetRawClusters();
0bf8d810 112 EventLoop (gAlice->GetEvNumber(), fInput->Chamber());
0df3ca52 113}
114
115//_____________________________________________________________________________
1af223d7 116void AliMUONClusterFinderAZ::EventLoop(Int_t nev, Int_t ch)
0df3ca52 117{
2b1e4f0e 118// Loop over digits
0df3ca52 119
1af223d7 120 if (fDraw && !fDraw->FindEvCh(nev, ch)) return;
0df3ca52 121
0627f609 122 fSegmentation[0] = (AliMUONVGeometryDESegmentation*) fInput->
123 Segmentation2(0)->GetDESegmentation(fInput->DetElemId());
124 fSegmentation[1] = (AliMUONVGeometryDESegmentation*) fInput->
125 Segmentation2(1)->GetDESegmentation(fInput->DetElemId());
0df3ca52 126
1af223d7 127 Int_t ndigits[2] = {9,9}, nShown[2] = {0};
cc87ebcd 128 if (fReco != 2) { // skip initialization for the combined cluster / track
129 fCathBeg = fPadBeg[0] = fPadBeg[1] = 0;
130 for (Int_t i = 0; i < 2; i++) {
131 for (Int_t j = 0; j < fgkDim; j++) { fUsed[i][j] = kFALSE; }
132 }
0df3ca52 133 }
134
135next:
cc87ebcd 136 if (fReco == 2 && (nShown[0] || nShown[1])) return; // only one precluster for the combined finder
1af223d7 137 if (ndigits[0] == nShown[0] && ndigits[1] == nShown[1]) return;
138
0df3ca52 139 Float_t xpad, ypad, zpad, zpad0;
0df3ca52 140 Bool_t first = kTRUE;
2b1e4f0e 141 if (fDebug) cout << " *** Event # " << nev << " chamber: " << ch << endl;
0df3ca52 142 fnPads[0] = fnPads[1] = 0;
cc87ebcd 143 for (Int_t i = 0; i < fgkDim; i++) fPadIJ[1][i] = 0;
2b1e4f0e 144
cc87ebcd 145 for (Int_t iii = fCathBeg; iii < 2; iii++) {
0df3ca52 146 Int_t cath = TMath::Odd(iii);
0627f609 147 ndigits[cath] = fInput->NDigits(cath);
2b1e4f0e 148 if (!ndigits[0] && !ndigits[1]) return;
0df3ca52 149 if (ndigits[cath] == 0) continue;
2b1e4f0e 150 if (fDebug) cout << " ndigits: " << ndigits[cath] << " " << cath << endl;
0df3ca52 151
152 AliMUONDigit *mdig;
153 Int_t digit;
154
c1aed84f 155 Bool_t eEOC = kTRUE; // end-of-cluster
cc87ebcd 156 for (digit = fPadBeg[cath]; digit < ndigits[cath]; digit++) {
2b1e4f0e 157 mdig = AliMUONClusterInput::Instance()->Digit(cath,digit);
0df3ca52 158 if (first) {
159 // Find first unused pad
160 if (fUsed[cath][digit]) continue;
0627f609 161 //if (!fSegmentation[cath]->GetPadC(fInput->DetElemId(),mdig->PadX(),mdig->PadY(),xpad,ypad,zpad0)) {
162 if (!fSegmentation[cath]->HasPad(mdig->PadX(), mdig->PadY())) {
5a051e34 163 // Handle "non-existing" pads
164 fUsed[cath][digit] = kTRUE;
165 continue;
166 }
0627f609 167 fSegmentation[cath]->GetPadC(mdig->PadX(), mdig->PadY(), xpad, ypad, zpad0);
0df3ca52 168 } else {
169 if (fUsed[cath][digit]) continue;
0627f609 170 //if (!fSegmentation[cath]->GetPadC(fInput->DetElemId(),mdig->PadX(),mdig->PadY(),xpad,ypad,zpad)) {
171 if (!fSegmentation[cath]->HasPad(mdig->PadX(), mdig->PadY())) {
5a051e34 172 // Handle "non-existing" pads
173 fUsed[cath][digit] = kTRUE;
174 continue;
175 }
0627f609 176 fSegmentation[cath]->GetPadC(mdig->PadX(), mdig->PadY(), xpad, ypad, zpad);
177 //if (TMath::Abs(zpad-zpad0) > 0.1) continue; // different slats
0df3ca52 178 // Find a pad overlapping with the cluster
179 if (!Overlap(cath,mdig)) continue;
180 }
181 // Add pad - recursive call
182 AddPad(cath,digit);
2b1e4f0e 183 //AZ !!!!!! Temporary fix of St1 overlap regions !!!!!!!!
0627f609 184 /*
2b1e4f0e 185 if (cath && ch < 2) {
186 Int_t npads = fnPads[0] + fnPads[1] - 1;
187 Int_t cath1 = fPadIJ[0][npads];
188 Int_t idig = TMath::Nint (fXyq[5][npads]);
189 mdig = AliMUONClusterInput::Instance()->Digit(cath1,idig);
0627f609 190 //fSegmentation[cath1]->GetPadC(fInput->DetElemId(),mdig->PadX(),mdig->PadY(),xpad,ypad,zpad);
191 fSegmentation[cath1]->GetPadC(mdig->PadX(), mdig->PadY(), xpad, ypad, zpad);
2b1e4f0e 192 if (TMath::Abs(zpad-zpad0) > 0.1) zpad0 = zpad;
193 }
0627f609 194 */
c1aed84f 195 eEOC = kFALSE;
0df3ca52 196 if (digit >= 0) break;
197 }
c1aed84f 198 if (first && eEOC) {
0df3ca52 199 // No more unused pads
200 if (cath == 0) continue; // on cathode #0 - check #1
2b1e4f0e 201 else return; // No more clusters
0df3ca52 202 }
c1aed84f 203 if (eEOC) break; // cluster found
0df3ca52 204 first = kFALSE;
2b1e4f0e 205 if (fDebug) cout << " nPads: " << fnPads[cath] << " " << nShown[cath]+fnPads[cath] << " " << cath << endl;
0df3ca52 206 } // for (Int_t iii = 0;
207
2b1e4f0e 208 fZpad = zpad0;
1af223d7 209 if (fDraw) fDraw->DrawCluster();
2b1e4f0e 210
211 // Use MLEM for cluster finder
212 Int_t nMax = 1, localMax[100], maxPos[100];
213 Double_t maxVal[100];
0df3ca52 214
2b1e4f0e 215 if (CheckPrecluster(nShown)) {
216 BuildPixArray();
0627f609 217 //*
218 if (fnPads[0]+fnPads[1] > 50) nMax = FindLocalMaxima(fPixArray, localMax, maxVal);
2b1e4f0e 219 if (nMax > 1) TMath::Sort(nMax, maxVal, maxPos, kTRUE); // in decreasing order
220 Int_t iSimple = 0, nInX = -1, nInY;
221 PadsInXandY(nInX, nInY);
222 if (fDebug) cout << "Pads in X and Y: " << nInX << " " << nInY << endl;
5a051e34 223 if (nMax == 1 && nInX < 4 && nInY < 4) iSimple = 1; //1; // simple cluster
0627f609 224 //*/
225 /* For test
226 Int_t iSimple = 0, nInX = -1, nInY;
227 PadsInXandY(nInX, nInY);
228 if (fDebug) cout << "Pads in X and Y: " << nInX << " " << nInY << endl;
229 if (nMax == 1 && nInX < 4 && nInY < 4) iSimple = 1; //1; // simple cluster
230 if (!iSimple) nMax = FindLocalMaxima(fPixArray, localMax, maxVal);
231 nMax = 1;
232 if (nMax > 1) TMath::Sort(nMax, maxVal, maxPos, kTRUE); // in decreasing order
233 */
2b1e4f0e 234 for (Int_t i=0; i<nMax; i++) {
235 if (nMax > 1) FindCluster(localMax, maxPos[i]);
94eb555e 236 if (!MainLoop(iSimple)) AliWarning(Form(" MainLoop failed "));
2b1e4f0e 237 if (i < nMax-1) {
238 for (Int_t j=0; j<fnPads[0]+fnPads[1]; j++) {
239 if (fPadIJ[1][j] == 0) continue; // pad charge was not modified
240 fPadIJ[1][j] = 0;
241 fXyq[2][j] = fXyq[6][j]; // use backup charge value
242 }
243 }
0627f609 244 } // for (Int_t i=0; i<nMax;
245 if (nMax > 1) ((TH2D*) gROOT->FindObject("anode"))->Delete();
246 TH2D *mlem = (TH2D*) gROOT->FindObject("mlem");
247 if (mlem) mlem->Delete();
2b1e4f0e 248 }
1af223d7 249 if (!fDraw || fDraw->Next()) goto next;
0df3ca52 250}
251
252//_____________________________________________________________________________
253void AliMUONClusterFinderAZ::AddPad(Int_t cath, Int_t digit)
254{
255 // Add pad to the cluster
0627f609 256 AliMUONDigit *mdig = fInput->Digit(cath,digit);
0df3ca52 257
258 Int_t charge = mdig->Signal();
259 // get the center of the pad
0627f609 260 Float_t xpad, ypad, zpad0;
261 //if (!fSegmentation[cath]->GetPadC(fInput->DetElemId(),mdig->PadX(),mdig->PadY(),xpad,ypad,zpad0)) { // Handle "non-existing" pads
262 if (!fSegmentation[cath]->HasPad(mdig->PadX(), mdig->PadY())) {
5a051e34 263 fUsed[cath][digit] = kTRUE;
264 return;
265 }
0627f609 266 fSegmentation[cath]->GetPadC(mdig->PadX(), mdig->PadY(), xpad, ypad, zpad0);
267 Int_t isec = fSegmentation[cath]->Sector(mdig->PadX(), mdig->PadY());
0df3ca52 268 Int_t nPads = fnPads[0] + fnPads[1];
269 fXyq[0][nPads] = xpad;
270 fXyq[1][nPads] = ypad;
271 fXyq[2][nPads] = charge;
0627f609 272 fXyq[3][nPads] = fSegmentation[cath]->Dpx(isec)/2;
273 fXyq[4][nPads] = fSegmentation[cath]->Dpy(isec)/2;
0df3ca52 274 fXyq[5][nPads] = digit;
2b1e4f0e 275 fXyq[6][nPads] = 0;
0df3ca52 276 fPadIJ[0][nPads] = cath;
277 fPadIJ[1][nPads] = 0;
0627f609 278 fPadIJ[2][nPads] = mdig->PadX();
279 fPadIJ[3][nPads] = mdig->PadY();
0df3ca52 280 fUsed[cath][digit] = kTRUE;
0627f609 281 if (fDebug) printf(" bbb %d %d %f %f %f %f %f %4d %3d %3d \n", nPads, cath, xpad, ypad, zpad0, fXyq[3][nPads]*2, fXyq[4][nPads]*2, charge, mdig->PadX(), mdig->PadY());
0df3ca52 282 fnPads[cath]++;
283
284 // Check neighbours
285 Int_t nn, ix, iy, xList[10], yList[10];
286 AliMUONDigit *mdig1;
287
0627f609 288 Int_t ndigits = fInput->NDigits(cath);
289 fSegmentation[cath]->Neighbours(mdig->PadX(), mdig->PadY(), &nn, xList, yList);
290 for (Int_t in = 0; in < nn; in++) {
291 ix = xList[in];
292 iy = yList[in];
0df3ca52 293 for (Int_t digit1 = 0; digit1 < ndigits; digit1++) {
294 if (digit1 == digit) continue;
0627f609 295 mdig1 = fInput->Digit(cath,digit1);
0df3ca52 296 if (!fUsed[cath][digit1] && mdig1->PadX() == ix && mdig1->PadY() == iy) {
297 fUsed[cath][digit1] = kTRUE;
298 // Add pad - recursive call
299 AddPad(cath,digit1);
300 }
301 } //for (Int_t digit1 = 0;
0627f609 302 } // for (Int_t in = 0;
0df3ca52 303}
304
305//_____________________________________________________________________________
2b1e4f0e 306Bool_t AliMUONClusterFinderAZ::Overlap(Int_t cath, AliMUONDigit *mdig)
0df3ca52 307{
308 // Check if the pad from one cathode overlaps with a pad
309 // in the precluster on the other cathode
310
0df3ca52 311 Float_t xpad, ypad, zpad;
0627f609 312 fSegmentation[cath]->GetPadC(mdig->PadX(), mdig->PadY(), xpad, ypad, zpad);
313 Int_t isec = fSegmentation[cath]->Sector(mdig->PadX(), mdig->PadY());
002920d1 314
2b1e4f0e 315 Float_t xy1[4], xy12[4];
0627f609 316 xy1[0] = xpad - fSegmentation[cath]->Dpx(isec)/2;
317 xy1[1] = xy1[0] + fSegmentation[cath]->Dpx(isec);
318 xy1[2] = ypad - fSegmentation[cath]->Dpy(isec)/2;
319 xy1[3] = xy1[2] + fSegmentation[cath]->Dpy(isec);
0df3ca52 320 //cout << " ok " << fnPads[0]+fnPads[1] << xy1[0] << xy1[1] << xy1[2] << xy1[3] << endl;
321
322 Int_t cath1 = TMath::Even(cath);
323 for (Int_t i=0; i<fnPads[0]+fnPads[1]; i++) {
324 if (fPadIJ[0][i] != cath1) continue;
325 if (Overlap(xy1, i, xy12, 0)) return kTRUE;
326 }
327 return kFALSE;
328}
329
330//_____________________________________________________________________________
331Bool_t AliMUONClusterFinderAZ::Overlap(Float_t *xy1, Int_t iPad, Float_t *xy12, Int_t iSkip)
332{
333 // Check if the pads xy1 and iPad overlap and return overlap area
334
335 Float_t xy2[4];
336 xy2[0] = fXyq[0][iPad] - fXyq[3][iPad];
337 xy2[1] = fXyq[0][iPad] + fXyq[3][iPad];
338 if (xy1[0] > xy2[1]-1.e-4 || xy1[1] < xy2[0]+1.e-4) return kFALSE;
339 xy2[2] = fXyq[1][iPad] - fXyq[4][iPad];
340 xy2[3] = fXyq[1][iPad] + fXyq[4][iPad];
341 if (xy1[2] > xy2[3]-1.e-4 || xy1[3] < xy2[2]+1.e-4) return kFALSE;
342 if (!iSkip) return kTRUE; // just check overlap (w/out computing the area)
343 xy12[0] = TMath::Max (xy1[0],xy2[0]);
344 xy12[1] = TMath::Min (xy1[1],xy2[1]);
345 xy12[2] = TMath::Max (xy1[2],xy2[2]);
346 xy12[3] = TMath::Min (xy1[3],xy2[3]);
347 return kTRUE;
348}
349
0df3ca52 350//_____________________________________________________________________________
351Bool_t AliMUONClusterFinderAZ::CheckPrecluster(Int_t *nShown)
352{
353 // Check precluster in order to attempt to simplify it (mostly for
354 // two-cathode preclusters)
355
2b1e4f0e 356 Int_t i1, i2, cath=0, digit=0;
0df3ca52 357 Float_t xy1[4], xy12[4];
358
359 Int_t npad = fnPads[0] + fnPads[1];
2b1e4f0e 360 if (npad == 1) {
361 // Disregard one-pad clusters (leftovers from splitting)
362 nShown[0] += fnPads[0];
363 nShown[1] += fnPads[1];
364 return kFALSE;
365 }
0df3ca52 366
367 // If pads have the same size take average of pads on both cathodes
0627f609 368 //Int_t sameSize = (fnPads[0] && fnPads[1]) ? 1 : 0;
369 Int_t sameSize = 0; //AZ - 17-01-06
370
0df3ca52 371 if (sameSize) {
372 Double_t xSize = -1, ySize = 0;
373 for (Int_t i=0; i<npad; i++) {
374 if (fXyq[2][i] < 0) continue;
375 if (xSize < 0) { xSize = fXyq[3][i]; ySize = fXyq[4][i]; }
376 if (TMath::Abs(xSize-fXyq[3][i]) > 1.e-4 || TMath::Abs(ySize-fXyq[4][i]) > 1.e-4) { sameSize = 0; break; }
377 }
378 } // if (sameSize)
2b1e4f0e 379 if (sameSize && fnPads[0] == 1 && fnPads[1] == 1) sameSize = 0; //AZ
5a051e34 380 // Handle shift by half a pad in Station 1
381 if (sameSize) {
382 Int_t cath0 = fPadIJ[0][0];
383 for (Int_t i = 1; i < npad; i++) {
384 if (fPadIJ[0][i] == cath0) continue;
385 Double_t dx = TMath::Abs ((fXyq[0][i] - fXyq[0][0]) / fXyq[3][i] / 2);
386 Int_t idx = (Int_t) TMath::Abs ((fXyq[0][i] - fXyq[0][0]) / fXyq[3][i] / 2);
387 if (TMath::Abs (dx - idx) > 0.001) sameSize = 0;
388 break;
389 }
390 } // if (sameSize)
391
2b1e4f0e 392 if (sameSize && (fnPads[0] >= 2 || fnPads[1] >= 2)) {
0df3ca52 393 nShown[0] += fnPads[0];
394 nShown[1] += fnPads[1];
395 fnPads[0] = fnPads[1] = 0;
396 Int_t div;
397 for (Int_t i=0; i<npad; i++) {
398 if (fXyq[2][i] < 0) continue; // used pad
399 fXyq[2][fnPads[0]] = fXyq[2][i];
400 div = 1;
2b1e4f0e 401 cath = fPadIJ[0][i];
0df3ca52 402 for (Int_t j=i+1; j<npad; j++) {
403 if (fPadIJ[0][j] == fPadIJ[0][i]) continue; // same cathode
404 if (TMath::Abs(fXyq[0][j]-fXyq[0][i]) > 1.e-4) continue;
405 if (TMath::Abs(fXyq[1][j]-fXyq[1][i]) > 1.e-4) continue;
406 fXyq[2][fnPads[0]] += fXyq[2][j];
407 div = 2;
408 fXyq[2][j] = -2;
2b1e4f0e 409 if (cath) fXyq[5][fnPads[0]] = fXyq[5][j]; // save digit number for cath 0
0df3ca52 410 break;
411 }
2b1e4f0e 412 // Flag that the digit from the other cathode
413 if (cath && div == 1) fXyq[5][fnPads[0]] = -fXyq[5][i] - 1;
414 // If low pad charge take the other equal to 0
0627f609 415 //if (div == 1 && fXyq[2][fnPads[0]] < fgkZeroSuppression + 1.5*3) div = 2;
0df3ca52 416 fXyq[2][fnPads[0]] /= div;
417 fXyq[0][fnPads[0]] = fXyq[0][i];
418 fXyq[1][fnPads[0]] = fXyq[1][i];
0627f609 419 fPadIJ[2][fnPads[0]] = fPadIJ[2][i];
420 fPadIJ[3][fnPads[0]] = fPadIJ[3][i];
0df3ca52 421 fPadIJ[0][fnPads[0]++] = 0;
422 }
423 } // if (sameSize)
424
425 // Check if one-cathode precluster
426 i1 = fnPads[0]!=0 ? 0 : 1;
427 i2 = fnPads[1]!=0 ? 1 : 0;
428
429 if (i1 != i2) { // two-cathode
430
431 Int_t *flags = new Int_t[npad];
432 for (Int_t i=0; i<npad; i++) { flags[i] = 0; }
433
434 // Check pad overlaps
435 for (Int_t i=0; i<npad; i++) {
436 if (fPadIJ[0][i] != i1) continue;
437 xy1[0] = fXyq[0][i] - fXyq[3][i];
438 xy1[1] = fXyq[0][i] + fXyq[3][i];
439 xy1[2] = fXyq[1][i] - fXyq[4][i];
440 xy1[3] = fXyq[1][i] + fXyq[4][i];
441 for (Int_t j=0; j<npad; j++) {
442 if (fPadIJ[0][j] != i2) continue;
443 if (!Overlap(xy1, j, xy12, 0)) continue;
444 flags[i] = flags[j] = 1; // mark overlapped pads
445 } // for (Int_t j=0;
446 } // for (Int_t i=0;
447
448 // Check if all pads overlap
2b1e4f0e 449 Int_t nFlags=0;
450 for (Int_t i=0; i<npad; i++) {
451 if (flags[i]) continue;
452 nFlags ++;
1af223d7 453 if (fDebug) cout << i << " " << fPadIJ[0][i] << " " << fXyq[0][i] << " " << fXyq[1][i] << endl;
2b1e4f0e 454 }
455 if (fDebug && nFlags) cout << " nFlags = " << nFlags << endl;
0df3ca52 456 //if (nFlags > 2 || (Float_t)nFlags / npad > 0.2) { // why 2 ??? - empirical choice
0627f609 457 if (nFlags > 0) {
0df3ca52 458 for (Int_t i=0; i<npad; i++) {
459 if (flags[i]) continue;
460 digit = TMath::Nint (fXyq[5][i]);
461 cath = fPadIJ[0][i];
1af223d7 462 // Check for edge effect (missing pads on the other cathode)
463 Int_t cath1 = TMath::Even(cath), ix, iy;
0627f609 464 ix = iy = 0;
465 //if (!fSegmentation[cath1]->GetPadI(fInput->DetElemId(),fXyq[0][i],fXyq[1][i],fZpad,ix,iy)) continue;
466 if (!fSegmentation[cath1]->HasPad(fXyq[0][i], fXyq[1][i], fZpad)) continue;
467 if (nFlags == 1 && fXyq[2][i] < fgkZeroSuppression * 3) continue;
0df3ca52 468 fUsed[cath][digit] = kFALSE; // release pad
469 fXyq[2][i] = -2;
470 fnPads[cath]--;
471 }
cc87ebcd 472 if (fDraw) fDraw->UpdateCluster(npad);
0df3ca52 473 } // if (nFlags > 2)
474
475 // Check correlations of cathode charges
476 if (fnPads[0] && fnPads[1]) { // two-cathode
477 Double_t sum[2]={0};
478 Int_t over[2] = {1, 1};
479 for (Int_t i=0; i<npad; i++) {
480 cath = fPadIJ[0][i];
481 if (fXyq[2][i] > 0) sum[cath] += fXyq[2][i];
0627f609 482 if (fXyq[2][i] > fgkSaturation-1) over[cath] = 0;
0df3ca52 483 }
2b1e4f0e 484 if (fDebug) cout << " Total charge: " << sum[0] << " " << sum[1] << endl;
0df3ca52 485 if ((over[0] || over[1]) && TMath::Abs(sum[0]-sum[1])/(sum[0]+sum[1])*2 > 1) { // 3 times difference
2b1e4f0e 486 if (fDebug) cout << " Release " << endl;
0df3ca52 487 // Big difference
cc87ebcd 488 cath = sum[0] > sum[1] ? 0 : 1;
489 Int_t imax = 0, imin = 0;
490 Double_t cmax = -1, cmin = 9999, dxMin = 0, dyMin = 0;
0df3ca52 491 Double_t *dist = new Double_t[npad];
cc87ebcd 492 for (Int_t i = 0; i < npad; i++) {
493 if (fPadIJ[0][i] != cath || fXyq[2][i] < 0) continue;
494 if (fXyq[2][i] < cmin) {
495 cmin = fXyq[2][i];
496 imin = i;
497 }
0df3ca52 498 if (fXyq[2][i] < cmax) continue;
499 cmax = fXyq[2][i];
500 imax = i;
501 }
502 // Arrange pads according to their distance to the max,
503 // normalized to the pad size
cc87ebcd 504 for (Int_t i = 0; i < npad; i++) {
0df3ca52 505 dist[i] = 0;
cc87ebcd 506 if (fPadIJ[0][i] != cath || fXyq[2][i] < 0) continue;
0df3ca52 507 if (i == imax) continue;
cc87ebcd 508 Double_t dx = (fXyq[0][i] - fXyq[0][imax]) / fXyq[3][imax] / 2;
509 Double_t dy = (fXyq[1][i] - fXyq[1][imax]) / fXyq[4][imax] / 2;
510 dist[i] = TMath::Sqrt (dx * dx + dy * dy);
511 if (i == imin) {
e8fb921b 512 cmin = dist[i] + 0.001; // distance to the pad with minimum charge
cc87ebcd 513 dxMin = dx;
514 dyMin = dy;
515 }
0df3ca52 516 }
517 TMath::Sort(npad, dist, flags, kFALSE); // in increasing order
518 Int_t indx;
519 Double_t xmax = -1;
cc87ebcd 520 for (Int_t i = 0; i < npad; i++) {
0df3ca52 521 indx = flags[i];
cc87ebcd 522 if (fPadIJ[0][indx] != cath || fXyq[2][indx] < 0) continue;
523 if (dist[indx] > cmin) {
524 // Farther than the minimum pad
525 Double_t dx = (fXyq[0][indx] - fXyq[0][imax]) / fXyq[3][imax] / 2;
526 Double_t dy = (fXyq[1][indx] - fXyq[1][imax]) / fXyq[4][imax] / 2;
527 dx *= dxMin;
528 dy *= dyMin;
529 if (dx >= 0 && dy >= 0) continue;
530 if (TMath::Abs(dx) > TMath::Abs(dy) && dx >= 0) continue;
531 if (TMath::Abs(dy) > TMath::Abs(dx) && dy >= 0) continue;
532 }
533 if (fXyq[2][indx] <= cmax || TMath::Abs(dist[indx]-xmax) < 1.e-3) {
0df3ca52 534 // Release pads
cc87ebcd 535 if (TMath::Abs(dist[indx]-xmax) < 1.e-3)
cd747ddb 536 cmax = TMath::Max((Double_t)(fXyq[2][indx]),cmax);
0df3ca52 537 else cmax = fXyq[2][indx];
538 xmax = dist[indx];
539 digit = TMath::Nint (fXyq[5][indx]);
540 fUsed[cath][digit] = kFALSE;
541 fXyq[2][indx] = -2;
542 fnPads[cath]--;
cc87ebcd 543 }
544 } // for (Int_t i = 0; i < npad;
545
546 // Check pad overlaps once more
547 for (Int_t j = 0; j < npad; j++) flags[j] = 0;
548 for (Int_t k = 0; k < npad; k++) {
549 if (fXyq[2][k] < 0 || fPadIJ[0][k] != i1) continue;
550 xy1[0] = fXyq[0][k] - fXyq[3][k];
551 xy1[1] = fXyq[0][k] + fXyq[3][k];
552 xy1[2] = fXyq[1][k] - fXyq[4][k];
553 xy1[3] = fXyq[1][k] + fXyq[4][k];
554 for (Int_t j = 0; j < npad; j++) {
555 if (fXyq[2][j] < 0) continue;
556 if (fPadIJ[0][j] != i2) continue;
557 if (!Overlap(xy1, j, xy12, 0)) continue;
558 flags[k] = flags[j] = 1; // mark overlapped pads
559 } // for (Int_t j = 0;
560 } // for (Int_t k = 0;
561 nFlags = 0;
562 for (Int_t j = 0; j < npad; j++) {
563 if (fXyq[2][j] < 0 || flags[j]) continue;
564 nFlags ++;
565 }
566 if (nFlags == fnPads[0] + fnPads[1]) {
567 // No overlap
568 for (Int_t j = 0; j < npad; j++) {
569 if (fXyq[2][j] < 0 || fPadIJ[0][j] != cath) continue;
570 fXyq[2][j] = -2;
571 fnPads[cath]--;
0df3ca52 572 }
cc87ebcd 573 }
0df3ca52 574 delete [] dist; dist = 0;
cc87ebcd 575 if (fDraw) fDraw->UpdateCluster(npad);
0df3ca52 576 } // TMath::Abs(sum[0]-sum[1])...
577 } // if (fnPads[0] && fnPads[1])
578 delete [] flags; flags = 0;
579 } // if (i1 != i2)
580
581 if (!sameSize) { nShown[0] += fnPads[0]; nShown[1] += fnPads[1]; }
582
583 // Move released pads to the right
584 Int_t beg = 0, end = npad-1, padij;
585 Double_t xyq;
586 while (beg < end) {
587 if (fXyq[2][beg] > 0) { beg++; continue; }
588 for (Int_t j=end; j>beg; j--) {
589 if (fXyq[2][j] < 0) continue;
590 end = j - 1;
0627f609 591 for (Int_t j1=0; j1<4; j1++) {
0df3ca52 592 padij = fPadIJ[j1][beg];
593 fPadIJ[j1][beg] = fPadIJ[j1][j];
594 fPadIJ[j1][j] = padij;
595 }
596 for (Int_t j1=0; j1<6; j1++) {
597 xyq = fXyq[j1][beg];
598 fXyq[j1][beg] = fXyq[j1][j];
599 fXyq[j1][j] = xyq;
600 }
601 break;
602 } // for (Int_t j=end;
603 beg++;
604 } // while
605 npad = fnPads[0] + fnPads[1];
94eb555e 606 if (npad > 500) {
607 AliWarning(Form(" *** Too large cluster. Give up. %d ", npad));
608 return kFALSE;
609 }
0df3ca52 610 // Back up charge value
1af223d7 611 for (Int_t j = 0; j < npad; j++) fXyq[6][j] = fXyq[2][j];
0df3ca52 612
613 return kTRUE;
614}
615
616//_____________________________________________________________________________
617void AliMUONClusterFinderAZ::BuildPixArray()
618{
619 // Build pixel array for MLEM method
620
621 Int_t nPix=0, i1, i2;
622 Float_t xy1[4], xy12[4];
623 AliMUONPixel *pixPtr=0;
624
625 Int_t npad = fnPads[0] + fnPads[1];
626
627 // One cathode is empty
628 i1 = fnPads[0]!=0 ? 0 : 1;
629 i2 = fnPads[1]!=0 ? 1 : 0;
630
631 // Build array of pixels on anode plane
632 if (i1 == i2) { // one-cathode precluster
633 for (Int_t j=0; j<npad; j++) {
634 pixPtr = new AliMUONPixel();
635 for (Int_t i=0; i<2; i++) {
636 pixPtr->SetCoord(i, fXyq[i][j]); // pixel coordinates
637 pixPtr->SetSize(i, fXyq[i+3][j]); // pixel size
638 }
639 pixPtr->SetCharge(fXyq[2][j]); // charge
640 fPixArray->Add((TObject*)pixPtr);
641 nPix++;
642 }
643 } else { // two-cathode precluster
5a051e34 644 i1 = fPadIJ[0][0];
645 i2 = TMath::Even (i1);
646 for (Int_t i = 0; i < npad; i++) {
0df3ca52 647 if (fPadIJ[0][i] != i1) continue;
648 xy1[0] = fXyq[0][i] - fXyq[3][i];
649 xy1[1] = fXyq[0][i] + fXyq[3][i];
650 xy1[2] = fXyq[1][i] - fXyq[4][i];
651 xy1[3] = fXyq[1][i] + fXyq[4][i];
5a051e34 652 for (Int_t j = 1; j < npad; j++) {
0df3ca52 653 if (fPadIJ[0][j] != i2) continue;
654 if (!Overlap(xy1, j, xy12, 1)) continue;
655 pixPtr = new AliMUONPixel();
656 for (Int_t k=0; k<2; k++) {
657 pixPtr->SetCoord(k, (xy12[2*k]+xy12[2*k+1])/2); // pixel coordinates
658 pixPtr->SetSize(k, xy12[2*k+1]-pixPtr->Coord(k)); // size
659 }
660 pixPtr->SetCharge(TMath::Min (fXyq[2][i],fXyq[2][j])); //charge
661 fPixArray->Add((TObject*)pixPtr);
2b1e4f0e 662 //cout << nPix << " " << pixPtr->Coord(0) << " " << pixPtr->Size(0) << " " << pixPtr->Coord(1) << " " << pixPtr->Size(1) << " " << pixPtr->Charge() << endl;
0df3ca52 663 nPix++;
664 } // for (Int_t j=0;
665 } // for (Int_t i=0;
666 } // else
667
5a051e34 668 Float_t xPadMin = 999, yPadMin = 999;
669 for (Int_t i = 0; i < npad; i++) {
670 xPadMin = TMath::Min (xPadMin, fXyq[3][i]);
671 yPadMin = TMath::Min (yPadMin, fXyq[4][i]);
672 }
673 if (fDebug) cout << xPadMin << " " << yPadMin << endl;
674
675 Float_t wxmin = 999, wymin = 999;
676 for (Int_t i = 0; i < nPix; i++) {
677 pixPtr = (AliMUONPixel*) fPixArray->UncheckedAt(i);
678 wxmin = TMath::Min ((Double_t)wxmin, pixPtr->Size(0));
679 wymin = TMath::Min ((Double_t)wymin, pixPtr->Size(1));
0df3ca52 680 }
2b1e4f0e 681 if (fDebug) cout << wxmin << " " << wymin << endl;
5a051e34 682 wxmin = TMath::Abs (wxmin - xPadMin/2) > 0.001 ? xPadMin : xPadMin / 2;
683 wymin = TMath::Abs (wymin - yPadMin/2) > 0.001 ? yPadMin : yPadMin / 2;
684 //wxmin = xPadMin; wymin = yPadMin;
0df3ca52 685
686 // Check if small pixel X-size
2b1e4f0e 687 AdjustPixel(wxmin, 0);
0df3ca52 688 // Check if small pixel Y-size
2b1e4f0e 689 AdjustPixel(wymin, 1);
0df3ca52 690 // Check if large pixel size
2b1e4f0e 691 AdjustPixel(wxmin, wymin);
0df3ca52 692
693 // Remove discarded pixels
694 for (Int_t i=0; i<nPix; i++) {
695 pixPtr = (AliMUONPixel*) fPixArray->UncheckedAt(i);
696 //pixPtr->Print();
697 if (pixPtr->Charge() < 1) { fPixArray->RemoveAt(i); delete pixPtr; }// discarded pixel
698 }
699 fPixArray->Compress();
700 nPix = fPixArray->GetEntriesFast();
701
702 if (nPix > npad) {
2b1e4f0e 703 if (fDebug) cout << nPix << endl;
0df3ca52 704 // Too many pixels - sort and remove pixels with the lowest signal
705 fPixArray->Sort();
706 for (Int_t i=npad; i<nPix; i++) {
707 pixPtr = (AliMUONPixel*) fPixArray->UncheckedAt(i);
708 //pixPtr->Print();
709 fPixArray->RemoveAt(i);
710 delete pixPtr;
711 }
712 nPix = npad;
713 } // if (nPix > npad)
714
715 // Set pixel charges to the same value (for MLEM)
716 for (Int_t i=0; i<nPix; i++) {
717 pixPtr = (AliMUONPixel*) fPixArray->UncheckedAt(i);
718 //pixPtr->SetCharge(10);
2b1e4f0e 719 if (fDebug) cout << i+1 << " " << pixPtr->Coord(0) << " " << pixPtr->Coord(1) << " " << pixPtr->Size(0) << " " << pixPtr->Size(1) << endl;
0df3ca52 720 }
721}
722
723//_____________________________________________________________________________
2b1e4f0e 724void AliMUONClusterFinderAZ::AdjustPixel(Float_t width, Int_t ixy)
0df3ca52 725{
2b1e4f0e 726 // Check if some pixels have small size (adjust if necessary)
0df3ca52 727
728 AliMUONPixel *pixPtr, *pixPtr1 = 0;
729 Int_t ixy1 = TMath::Even(ixy);
730 Int_t nPix = fPixArray->GetEntriesFast();
731
732 for (Int_t i=0; i<nPix; i++) {
733 pixPtr = (AliMUONPixel*) fPixArray->UncheckedAt(i);
734 if (pixPtr->Charge() < 1) continue; // discarded pixel
735 if (pixPtr->Size(ixy)-width < -1.e-4) {
736 // try to merge
2b1e4f0e 737 if (fDebug) cout << i << " Small X or Y: " << ixy << " " << pixPtr->Size(ixy) << " " << width << " " << pixPtr->Coord(0) << " " << pixPtr->Coord(1) << endl;
0df3ca52 738 for (Int_t j=i+1; j<nPix; j++) {
739 pixPtr1 = (AliMUONPixel*) fPixArray->UncheckedAt(j);
740 if (pixPtr1->Charge() < 1) continue; // discarded pixel
741 if (TMath::Abs(pixPtr1->Size(ixy)-width) < 1.e-4) continue; // right size
742 if (TMath::Abs(pixPtr1->Coord(ixy1)-pixPtr->Coord(ixy1)) > 1.e-4) continue; // different rows/columns
743 if (TMath::Abs(pixPtr1->Coord(ixy)-pixPtr->Coord(ixy)) < 2*width) {
744 // merge
2b1e4f0e 745 Double_t tmp = pixPtr->Coord(ixy) + pixPtr1->Size(ixy) *
746 TMath::Sign (1., pixPtr1->Coord(ixy) - pixPtr->Coord(ixy));
747 pixPtr->SetCoord(ixy, tmp);
0df3ca52 748 pixPtr->SetSize(ixy, width);
0df3ca52 749 pixPtr->SetCharge(TMath::Min (pixPtr->Charge(),pixPtr1->Charge()));
750 pixPtr1->SetCharge(0);
751 pixPtr1 = 0;
752 break;
753 }
754 } // for (Int_t j=i+1;
755 //if (!pixPtr1) { cout << " I am here!" << endl; pixPtr->SetSize(ixy, width); } // ???
756 //else if (pixPtr1->Charge() > 0.5 || i == nPix-1) {
757 if (pixPtr1 || i == nPix-1) {
758 // edge pixel - just increase its size
2b1e4f0e 759 if (fDebug) cout << " Edge ..." << endl;
0df3ca52 760 for (Int_t j=0; j<fnPads[0]+fnPads[1]; j++) {
2b1e4f0e 761 //if (fPadIJ[0][j] != ixy1) continue;
5a051e34 762 //???-check if (TMath::Abs(pixPtr->Coord(ixy1)-fXyq[ixy1][j]) > 1.e-4) continue;
0df3ca52 763 if (pixPtr->Coord(ixy) < fXyq[ixy][j])
2b1e4f0e 764 //pixPtr->Shift(ixy, -pixPtr->Size(ixy));
765 pixPtr->Shift(ixy, pixPtr->Size(ixy)-width);
766 //else pixPtr->Shift(ixy, pixPtr->Size(ixy));
767 else pixPtr->Shift(ixy, -pixPtr->Size(ixy)+width);
0df3ca52 768 pixPtr->SetSize(ixy, width);
769 break;
770 }
771 }
772 } // if (pixPtr->Size(ixy)-width < -1.e-4)
773 } // for (Int_t i=0; i<nPix;
774 return;
775}
776
777//_____________________________________________________________________________
2b1e4f0e 778void AliMUONClusterFinderAZ::AdjustPixel(Float_t wxmin, Float_t wymin)
0df3ca52 779{
2b1e4f0e 780 // Check if some pixels have large size (adjust if necessary)
0df3ca52 781
cc87ebcd 782 Int_t n1[2], n2[2], iOK = 1, nPix = fPixArray->GetEntriesFast();
783 AliMUONPixel *pixPtr, pix;
784 Double_t xy0[2] = {9999, 9999}, wxy[2], dist[2];
0df3ca52 785
786 // Check if large pixel size
cc87ebcd 787 for (Int_t i = 0; i < nPix; i++) {
0df3ca52 788 pixPtr = (AliMUONPixel*) fPixArray->UncheckedAt(i);
789 if (pixPtr->Charge() < 1) continue; // discarded pixel
cc87ebcd 790 if (pixPtr->Size(0) - wxmin < 1.e-4) {
791 if (xy0[0] > 9998) xy0[0] = pixPtr->Coord(0); // position of a "normal" pixel
792 if (pixPtr->Size(1) - wymin < 1.e-4) {
793 if (xy0[1] > 9998) xy0[1] = pixPtr->Coord(1); // position of a "normal" pixel
794 continue;
795 } else iOK = 0; // large pixel
796 } else {
797 iOK = 0; // large pixel
798 if (xy0[1] > 9998 && pixPtr->Size(1) - wymin < 1.e-4) xy0[1] = pixPtr->Coord(1); // "normal" pixel
799 }
800 if (xy0[0] < 9998 && xy0[1] < 9998) break;
801 }
802 if (iOK) return;
803
804 wxy[0] = wxmin;
805 wxy[1] = wymin;
806 //cout << xy0[0] << " " << xy0[1] << endl;
807 for (Int_t i = 0; i < nPix; i++) {
808 pixPtr = (AliMUONPixel*) fPixArray->UncheckedAt(i);
809 if (pixPtr->Charge() < 1) continue; // discarded pixel
810 n1[0] = n1[1] = 999;
811 n2[0] = n2[1] = 1;
812 for (Int_t j = 0; j < 2; j++) {
813 if (pixPtr->Size(j) - wxy[j] < 1.e-4) continue;
814 dist[j] = (pixPtr->Coord(j) - xy0[j]) / wxy[j] / 2; // normalized distance to "normal" pixel
815 n2[j] = TMath::Nint (pixPtr->Size(j) / wxy[j]);
816 n1[j] = n2[j] == 1 ? TMath::Nint(dist[j]) : (Int_t)dist[j];
817 }
818 if (n1[0] > 998 && n1[1] > 998) continue;
819 if (fDebug) cout << " Different " << pixPtr->Size(0) << " " << wxy[0] << " "
820 << pixPtr->Size(1) << " " << wxy[1] <<endl;
821
0627f609 822 if (n2[0] > 2 || n2[1] > 2) {
94eb555e 823 //cout << n2[0] << " " << n2[1] << endl;
0627f609 824 if (n2[0] > 2 && n1[0] < 999) n1[0]--;
825 if (n2[1] > 2 && n1[1] < 999) n1[1]--;
826 }
cc87ebcd 827 //cout << n1[0] << " " << n2[0] << " " << n1[1] << " " << n2[1] << endl;
828 pix = *pixPtr;
829 pix.SetSize(0, wxy[0]); pix.SetSize(1, wxy[1]);
830 //pixPtr->Print();
831 for (Int_t ii = 0; ii < n2[0]; ii++) {
832 if (n1[0] < 999) pix.SetCoord(0, xy0[0] + (n1[0] + TMath::Sign(1.,dist[0]) * ii) * 2 * wxy[0]);
833 for (Int_t jj = 0; jj < n2[1]; jj++) {
834 if (n1[1] < 999) pix.SetCoord(1, xy0[1] + (n1[1] + TMath::Sign(1.,dist[1]) * jj) * 2 * wxy[1]);
835 fPixArray->Add(new AliMUONPixel(pix));
836 //pix.Print();
0df3ca52 837 }
0df3ca52 838 }
cc87ebcd 839 pixPtr->SetCharge(0);
840 } // for (Int_t i = 0; i < nPix;
0df3ca52 841}
842
843//_____________________________________________________________________________
2b1e4f0e 844Bool_t AliMUONClusterFinderAZ::MainLoop(Int_t iSimple)
0df3ca52 845{
846 // Repeat MLEM algorithm until pixel size becomes sufficiently small
847
848 TH2D *mlem;
849
850 Int_t ix, iy;
851 //Int_t nn, xList[10], yList[10];
852 Int_t nPix = fPixArray->GetEntriesFast();
0df3ca52 853 AliMUONPixel *pixPtr = 0;
854 Double_t *coef = 0, *probi = 0;
2b1e4f0e 855 AddVirtualPad(); // add virtual pads if necessary
856 Int_t npadTot = fnPads[0] + fnPads[1], npadOK = 0;
1af223d7 857 for (Int_t i = 0; i < npadTot; i++) if (fPadIJ[1][i] == 0) npadOK++;
858 if (fDraw) fDraw->ResetMuon();
0df3ca52 859
860 while (1) {
861
862 mlem = (TH2D*) gROOT->FindObject("mlem");
863 if (mlem) mlem->Delete();
864 // Calculate coefficients
2b1e4f0e 865 if (fDebug) cout << " nPix, npadTot, npadOK " << nPix << " " << npadTot << " " << npadOK << endl;
0df3ca52 866
867 // Calculate coefficients and pixel visibilities
868 coef = new Double_t [npadTot*nPix];
869 probi = new Double_t [nPix];
2b1e4f0e 870 for (Int_t ipix=0; ipix<nPix; ipix++) probi[ipix] = 0;
871 Int_t indx = 0, indx1 = 0, cath = 0;
872
873 for (Int_t j=0; j<npadTot; j++) {
874 indx = j*nPix;
875 if (fPadIJ[1][j] == 0) {
0df3ca52 876 cath = fPadIJ[0][j];
0627f609 877 ix = fPadIJ[2][j];
878 iy = fPadIJ[3][j];
879 fSegmentation[cath]->SetPad(ix, iy);
2b1e4f0e 880 /*
881 fSegmentation[cath]->Neighbours(fInput->DetElemId(),ix,iy,&nn,xList,yList);
882 if (nn != 4) {
883 cout << nn << ": ";
884 for (Int_t i=0; i<nn; i++) {cout << xList[i] << " " << yList[i] << ", ";}
885 cout << endl;
886 }
887 */
888 }
889
890 for (Int_t ipix=0; ipix<nPix; ipix++) {
891 indx1 = indx + ipix;
892 if (fPadIJ[1][j] < 0) { coef[indx1] = 0; continue; }
893 pixPtr = (AliMUONPixel*) fPixArray->UncheckedAt(ipix);
0627f609 894 fSegmentation[cath]->SetHit(pixPtr->Coord(0), pixPtr->Coord(1), fZpad);
895 coef[indx1] = fInput->Mathieson()->IntXY(fInput->DetElemId(),fInput->Segmentation2(cath));
2b1e4f0e 896 probi[ipix] += coef[indx1];
897 } // for (Int_t ipix=0;
898 } // for (Int_t j=0;
899 for (Int_t ipix=0; ipix<nPix; ipix++) if (probi[ipix] < 0.01) pixPtr->SetCharge(0); // "invisible" pixel
0df3ca52 900
901 // MLEM algorithm
2b1e4f0e 902 Mlem(coef, probi, 15);
0df3ca52 903
cd747ddb 904 Double_t xylim[4] = {999, 999, 999, 999};
0df3ca52 905 for (Int_t ipix=0; ipix<nPix; ipix++) {
906 pixPtr = (AliMUONPixel*) fPixArray->UncheckedAt(ipix);
cc87ebcd 907 //cout << ipix+1; pixPtr->Print();
0df3ca52 908 for (Int_t i=0; i<4; i++)
909 xylim[i] = TMath::Min (xylim[i], (i%2 ? -1 : 1)*pixPtr->Coord(i/2));
0df3ca52 910 }
911 for (Int_t i=0; i<4; i++) {
2b1e4f0e 912 xylim[i] -= pixPtr->Size(i/2); if (fDebug) cout << (i%2 ? -1 : 1)*xylim[i] << " "; }
913 if (fDebug) cout << endl;
0df3ca52 914
2b1e4f0e 915 // Adjust histogram to approximately the same limits as for the pads
0df3ca52 916 // (for good presentation)
1af223d7 917 if (fDraw) fDraw->AdjustHist(xylim, pixPtr);
918
0df3ca52 919 Int_t nx = TMath::Nint ((-xylim[1]-xylim[0])/pixPtr->Size(0)/2);
920 Int_t ny = TMath::Nint ((-xylim[3]-xylim[2])/pixPtr->Size(1)/2);
2b1e4f0e 921
0df3ca52 922 mlem = new TH2D("mlem","mlem",nx,xylim[0],-xylim[1],ny,xylim[2],-xylim[3]);
923 for (Int_t ipix=0; ipix<nPix; ipix++) {
924 pixPtr = (AliMUONPixel*) fPixArray->UncheckedAt(ipix);
925 mlem->Fill(pixPtr->Coord(0),pixPtr->Coord(1),pixPtr->Charge());
926 }
1af223d7 927 if (fDraw) fDraw->DrawHist("c2", mlem);
0df3ca52 928
929 // Check if the total charge of pixels is too low
930 Double_t qTot = 0;
931 for (Int_t i=0; i<nPix; i++) {
932 pixPtr = (AliMUONPixel*) fPixArray->UncheckedAt(i);
933 qTot += pixPtr->Charge();
934 }
2b1e4f0e 935 if (qTot < 1.e-4 || npadOK < 3 && qTot < 7) {
0df3ca52 936 delete [] coef; delete [] probi; coef = 0; probi = 0;
937 fPixArray->Delete();
2b1e4f0e 938 for (Int_t i=0; i<npadTot; i++) if (fPadIJ[1][i] == 0) fPadIJ[1][i] = -1;
0df3ca52 939 return kFALSE;
940 }
941
942 // Plot data - expectation
943 /*
944 Double_t x, y, cont;
945 for (Int_t j=0; j<npadTot; j++) {
946 Double_t sum1 = 0;
947 for (Int_t i=0; i<nPix; i++) {
948 // Caculate expectation
949 pixPtr = (AliMUONPixel*) fPixArray->UncheckedAt(i);
950 sum1 += pixPtr->Charge()*coef[j*nPix+i];
951 }
0627f609 952 sum1 = TMath::Min (sum1,fgkSaturation);
0df3ca52 953 x = fXyq[0][j];
954 y = fXyq[1][j];
955 cath = fPadIJ[0][j];
956 Int_t ihist = cath*2;
957 ix = fHist[ihist]->GetXaxis()->FindBin(x);
958 iy = fHist[ihist]->GetYaxis()->FindBin(y);
959 cont = fHist[ihist]->GetCellContent(ix,iy);
960 if (cont == 0 && fHist[ihist+1]) {
961 ihist += 1;
962 ix = fHist[ihist]->GetXaxis()->FindBin(x);
963 iy = fHist[ihist]->GetYaxis()->FindBin(y);
964 }
965 fHist[ihist]->SetBinContent(ix,iy,fXyq[2][j]-sum1);
966 }
967 ((TCanvas*)gROOT->FindObject("c1"))->cd(1);
968 //gPad->SetTheta(55);
969 //gPad->SetPhi(30);
970 //mlem->Draw("lego1");
971 gPad->Modified();
972 ((TCanvas*)gROOT->FindObject("c1"))->cd(2);
973 gPad->Modified();
974 */
975
2b1e4f0e 976 if (iSimple) {
977 // Simple cluster - skip further passes thru EM-procedure
2b1e4f0e 978 Simple();
979 delete [] coef; delete [] probi; coef = 0; probi = 0;
980 fPixArray->Delete();
981 return kTRUE;
982 }
983
0df3ca52 984 // Calculate position of the center-of-gravity around the maximum pixel
985 Double_t xyCOG[2];
986 FindCOG(mlem, xyCOG);
987
988 if (TMath::Min(pixPtr->Size(0),pixPtr->Size(1)) < 0.07 && pixPtr->Size(0) > pixPtr->Size(1)) break;
2b1e4f0e 989 //if (TMath::Min(pixPtr->Size(0),pixPtr->Size(1)) < 0.007 && pixPtr->Size(0) > pixPtr->Size(1)) break;
0df3ca52 990 //if (TMath::Min(pixPtr->Size(0),pixPtr->Size(1)) >= 0.07 || pixPtr->Size(0) < pixPtr->Size(1)) {
991 // Sort pixels according to the charge
992 fPixArray->Sort();
993 /*
994 for (Int_t i=0; i<nPix; i++) {
995 pixPtr = (AliMUONPixel*) fPixArray->UncheckedAt(i);
996 cout << i+1; pixPtr->Print();
997 }
998 */
999 Double_t pixMin = 0.01*((AliMUONPixel*)fPixArray->UncheckedAt(0))->Charge();
1000 pixMin = TMath::Min (pixMin,50.);
1001
1002 // Decrease pixel size and shift pixels to make them centered at
1003 // the maximum one
1004 indx = (pixPtr->Size(0)>pixPtr->Size(1)) ? 0 : 1;
1005 Double_t width = 0, shift[2]={0};
1006 ix = 1;
1007 for (Int_t i=0; i<4; i++) xylim[i] = 999;
1008 Int_t nPix1 = nPix; nPix = 0;
1009 for (Int_t ipix=0; ipix<nPix1; ipix++) {
1010 pixPtr = (AliMUONPixel*) fPixArray->UncheckedAt(ipix);
1011 if (nPix >= npadOK) { // too many pixels already
1012 fPixArray->RemoveAt(ipix);
1013 delete pixPtr;
1014 continue;
1015 }
1016 if (pixPtr->Charge() < pixMin) { // low charge
1017 fPixArray->RemoveAt(ipix);
1018 delete pixPtr;
1019 continue;
1020 }
1021 for (Int_t i=0; i<2; i++) {
1022 if (!i) {
1023 pixPtr->SetCharge(10);
1024 pixPtr->SetSize(indx, pixPtr->Size(indx)/2);
1025 width = -pixPtr->Size(indx);
1026 pixPtr->Shift(indx, width);
1027 // Shift pixel position
1028 if (ix) {
1029 ix = 0;
1030 for (Int_t j=0; j<2; j++) {
1031 shift[j] = pixPtr->Coord(j) - xyCOG[j];
1032 shift[j] -= ((Int_t)(shift[j]/pixPtr->Size(j)/2))*pixPtr->Size(j)*2;
1033 }
1034 //cout << ipix << " " << i << " " << shift[0] << " " << shift[1] << endl;
1035 } // if (ix)
1036 pixPtr->Shift(0, -shift[0]);
1037 pixPtr->Shift(1, -shift[1]);
1038 } else {
1039 pixPtr = new AliMUONPixel(*pixPtr);
1040 pixPtr->Shift(indx, -2*width);
1041 fPixArray->Add((TObject*)pixPtr);
1042 } // else
1043 //pixPtr->Print();
1044 for (Int_t i=0; i<4; i++)
1045 xylim[i] = TMath::Min (xylim[i], (i%2 ? -1 : 1)*pixPtr->Coord(i/2));
1046 } // for (Int_t i=0; i<2;
1047 nPix += 2;
1048 } // for (Int_t ipix=0;
1049
1050 fPixArray->Compress();
1051 nPix = fPixArray->GetEntriesFast();
1052
1053 // Remove excessive pixels
1054 if (nPix > npadOK) {
1055 for (Int_t ipix=npadOK; ipix<nPix; ipix++) {
1056 pixPtr = (AliMUONPixel*) fPixArray->UncheckedAt(ipix);
1057 fPixArray->RemoveAt(ipix);
1058 delete pixPtr;
1059 }
1060 } else {
1061 pixPtr = (AliMUONPixel*) fPixArray->UncheckedAt(0);
1062 // add pixels if the maximum is at the limit of pixel area
1063 // start from Y-direction
1064 Int_t j = 0;
1065 for (Int_t i=3; i>-1; i--) {
1066 if (nPix < npadOK &&
1067 TMath::Abs((i%2 ? -1 : 1)*xylim[i]-xyCOG[i/2]) < pixPtr->Size(i/2)) {
1068 pixPtr = new AliMUONPixel(*pixPtr);
1069 pixPtr->SetCoord(i/2, xyCOG[i/2]+(i%2 ? 2:-2)*pixPtr->Size(i/2));
1070 j = TMath::Even (i/2);
1071 pixPtr->SetCoord(j, xyCOG[j]);
1072 fPixArray->Add((TObject*)pixPtr);
1073 nPix++;
1074 }
1075 }
1076 } // else
1077
1078 fPixArray->Compress();
1079 nPix = fPixArray->GetEntriesFast();
1080 delete [] coef; delete [] probi; coef = 0; probi = 0;
1081 } // while (1)
1082
1083 // remove pixels with low signal or low visibility
1084 // Cuts are empirical !!!
1085 Double_t thresh = TMath::Max (mlem->GetMaximum()/100.,1.);
1086 thresh = TMath::Min (thresh,50.);
1087 Double_t cmax = -1, charge = 0;
1088 for (Int_t i=0; i<nPix; i++) cmax = TMath::Max (cmax,probi[i]);
2b1e4f0e 1089 //cout << thresh << " " << cmax << " " << cmax*0.9 << endl;
0df3ca52 1090 // Mark pixels which should be removed
1091 for (Int_t i=0; i<nPix; i++) {
1092 pixPtr = (AliMUONPixel*) fPixArray->UncheckedAt(i);
1093 charge = pixPtr->Charge();
1094 if (charge < thresh) pixPtr->SetCharge(-charge);
2b1e4f0e 1095 //else if (cmax > 1.91) {
1096 // if (probi[i] < 1.9) pixPtr->SetCharge(-charge);
1097 //}
1098 //AZ else if (probi[i] < cmax*0.9) pixPtr->SetCharge(-charge);
0627f609 1099 //18-01-06 else if (probi[i] < cmax*0.8) pixPtr->SetCharge(-charge);
2b1e4f0e 1100 //cout << i << " " << pixPtr->Coord(0) << " " << pixPtr->Coord(1) << " " << charge << " " << probi[i] << endl;
0df3ca52 1101 }
1102 // Move charge of removed pixels to their nearest neighbour (to keep total charge the same)
1103 Int_t near = 0;
1104 for (Int_t i=0; i<nPix; i++) {
1105 pixPtr = (AliMUONPixel*) fPixArray->UncheckedAt(i);
1106 charge = pixPtr->Charge();
1107 if (charge > 0) continue;
1108 near = FindNearest(pixPtr);
1109 pixPtr->SetCharge(0);
2b1e4f0e 1110 probi[i] = 0; // make it "invisible"
0df3ca52 1111 pixPtr = (AliMUONPixel*) fPixArray->UncheckedAt(near);
2b1e4f0e 1112 pixPtr->SetCharge(pixPtr->Charge() + (-charge));
0df3ca52 1113 }
2b1e4f0e 1114 Mlem(coef,probi,2);
0df3ca52 1115 // Update histogram
1116 for (Int_t i=0; i<nPix; i++) {
1117 pixPtr = (AliMUONPixel*) fPixArray->UncheckedAt(i);
1118 ix = mlem->GetXaxis()->FindBin(pixPtr->Coord(0));
1119 iy = mlem->GetYaxis()->FindBin(pixPtr->Coord(1));
1120 mlem->SetBinContent(ix, iy, pixPtr->Charge());
1121 }
1af223d7 1122 if (fDraw) fDraw->DrawHist("c2", mlem);
0df3ca52 1123
0df3ca52 1124 // Try to split into clusters
1125 Bool_t ok = kTRUE;
1126 if (mlem->GetSum() < 1) ok = kFALSE;
1127 else Split(mlem, coef);
1128 delete [] coef; delete [] probi; coef = 0; probi = 0;
1129 fPixArray->Delete();
1130 return ok;
1131}
1132
1133//_____________________________________________________________________________
2b1e4f0e 1134void AliMUONClusterFinderAZ::Mlem(Double_t *coef, Double_t *probi, Int_t nIter)
0df3ca52 1135{
1136 // Use MLEM to find pixel charges
1137
1138 Int_t nPix = fPixArray->GetEntriesFast();
1139 Int_t npad = fnPads[0] + fnPads[1];
1140 Double_t *probi1 = new Double_t [nPix];
2b1e4f0e 1141 Double_t probMax = 0;
0df3ca52 1142 Int_t indx, indx1;
1143 AliMUONPixel *pixPtr;
1144
2b1e4f0e 1145 for (Int_t ipix=0; ipix<nPix; ipix++) if (probi[ipix] > probMax) probMax = probi[ipix];
1146 for (Int_t iter=0; iter<nIter; iter++) {
0df3ca52 1147 // Do iterations
1148 for (Int_t ipix=0; ipix<nPix; ipix++) {
1149 // Correct each pixel
1150 if (probi[ipix] < 0.01) continue; // skip "invisible" pixel
1151 Double_t sum = 0;
2b1e4f0e 1152 //probi1[ipix] = probi[ipix];
1153 probi1[ipix] = probMax;
0df3ca52 1154 for (Int_t j=0; j<npad; j++) {
1155 if (fPadIJ[1][j] < 0) continue;
1156 Double_t sum1 = 0;
1157 indx1 = j*nPix;
1158 indx = indx1 + ipix;
1159 for (Int_t i=0; i<nPix; i++) {
1160 // Caculate expectation
1161 pixPtr = (AliMUONPixel*) fPixArray->UncheckedAt(i);
1162 sum1 += pixPtr->Charge()*coef[indx1+i];
1163 } // for (Int_t i=0;
0627f609 1164 if (fXyq[2][j] > fgkSaturation-1 && sum1 > fXyq[2][j]) { probi1[ipix] -= coef[indx]; continue; } // correct for pad charge overflows
0df3ca52 1165 //cout << sum1 << " " << fXyq[2][j] << " " << coef[j*nPix+ipix] << endl;
1166 if (coef[indx] > 1.e-6) sum += fXyq[2][j]*coef[indx]/sum1;
1167 } // for (Int_t j=0;
1168 pixPtr = (AliMUONPixel*) fPixArray->UncheckedAt(ipix);
1169 if (probi1[ipix] > 1.e-6) pixPtr->SetCharge(pixPtr->Charge()*sum/probi1[ipix]);
1170 } // for (Int_t ipix=0;
1171 } // for (Int_t iter=0;
1172 delete [] probi1;
1173 return;
1174}
1175
1176//_____________________________________________________________________________
1177void AliMUONClusterFinderAZ::FindCOG(TH2D *mlem, Double_t *xyc)
1178{
1179 // Calculate position of the center-of-gravity around the maximum pixel
1180
1181 Int_t ixmax, iymax, ix, nsumx=0, nsumy=0, nsum=0;
1182 Int_t i1 = -9, j1 = -9;
1183 mlem->GetMaximumBin(ixmax,iymax,ix);
1184 Int_t nx = mlem->GetNbinsX();
1185 Int_t ny = mlem->GetNbinsY();
1186 Double_t thresh = mlem->GetMaximum()/10;
1187 Double_t x, y, cont, xq=0, yq=0, qq=0;
1188
1189 for (Int_t i=TMath::Max(1,iymax-1); i<=TMath::Min(ny,iymax+1); i++) {
1190 y = mlem->GetYaxis()->GetBinCenter(i);
1191 for (Int_t j=TMath::Max(1,ixmax-1); j<=TMath::Min(nx,ixmax+1); j++) {
1192 cont = mlem->GetCellContent(j,i);
1193 if (cont < thresh) continue;
1194 if (i != i1) {i1 = i; nsumy++;}
1195 if (j != j1) {j1 = j; nsumx++;}
1196 x = mlem->GetXaxis()->GetBinCenter(j);
1197 xq += x*cont;
1198 yq += y*cont;
1199 qq += cont;
1200 nsum++;
1201 }
1202 }
1203
1204 Double_t cmax = 0;
1205 Int_t i2 = 0, j2 = 0;
1206 x = y = 0;
1207 if (nsumy == 1) {
1208 // one bin in Y - add one more (with the largest signal)
1209 for (Int_t i=TMath::Max(1,iymax-1); i<=TMath::Min(ny,iymax+1); i++) {
1210 if (i == iymax) continue;
1211 for (Int_t j=TMath::Max(1,ixmax-1); j<=TMath::Min(nx,ixmax+1); j++) {
1212 cont = mlem->GetCellContent(j,i);
1213 if (cont > cmax) {
1214 cmax = cont;
1215 x = mlem->GetXaxis()->GetBinCenter(j);
1216 y = mlem->GetYaxis()->GetBinCenter(i);
1217 i2 = i;
1218 j2 = j;
1219 }
1220 }
1221 }
1222 xq += x*cmax;
1223 yq += y*cmax;
1224 qq += cmax;
1225 if (i2 != i1) nsumy++;
1226 if (j2 != j1) nsumx++;
1227 nsum++;
1228 } // if (nsumy == 1)
1229
1230 if (nsumx == 1) {
1231 // one bin in X - add one more (with the largest signal)
1232 cmax = x = y = 0;
1233 for (Int_t j=TMath::Max(1,ixmax-1); j<=TMath::Min(nx,ixmax+1); j++) {
1234 if (j == ixmax) continue;
1235 for (Int_t i=TMath::Max(1,iymax-1); i<=TMath::Min(ny,iymax+1); i++) {
1236 cont = mlem->GetCellContent(j,i);
1237 if (cont > cmax) {
1238 cmax = cont;
1239 x = mlem->GetXaxis()->GetBinCenter(j);
1240 y = mlem->GetYaxis()->GetBinCenter(i);
1241 i2 = i;
1242 j2 = j;
1243 }
1244 }
1245 }
1246 xq += x*cmax;
1247 yq += y*cmax;
1248 qq += cmax;
1249 if (i2 != i1) nsumy++;
1250 if (j2 != j1) nsumx++;
1251 nsum++;
1252 } // if (nsumx == 1)
1253
1254 xyc[0] = xq/qq; xyc[1] = yq/qq;
2b1e4f0e 1255 if (fDebug) cout << xyc[0] << " " << xyc[1] << " " << qq << " " << nsum << " " << nsumx << " " << nsumy << endl;
0df3ca52 1256 return;
1257}
1258
1259//_____________________________________________________________________________
1260Int_t AliMUONClusterFinderAZ::FindNearest(AliMUONPixel *pixPtr0)
1261{
1262 // Find the pixel nearest to the given one
1263 // (algorithm may be not very efficient)
1264
1265 Int_t nPix = fPixArray->GetEntriesFast(), imin = 0;
1266 Double_t rmin = 99999, dx = 0, dy = 0, r = 0;
1267 Double_t xc = pixPtr0->Coord(0), yc = pixPtr0->Coord(1);
1268 AliMUONPixel *pixPtr;
1269
1270 for (Int_t i=0; i<nPix; i++) {
1271 pixPtr = (AliMUONPixel*) fPixArray->UncheckedAt(i);
1272 if (pixPtr->Charge() < 0.5) continue;
1273 dx = (xc - pixPtr->Coord(0)) / pixPtr->Size(0);
1274 dy = (yc - pixPtr->Coord(1)) / pixPtr->Size(1);
1275 r = dx *dx + dy * dy;
1276 if (r < rmin) { rmin = r; imin = i; }
1277 }
1278 return imin;
1279}
1280
1281//_____________________________________________________________________________
1282void AliMUONClusterFinderAZ::Split(TH2D *mlem, Double_t *coef)
1283{
1284 // The main steering function to work with clusters of pixels in anode
1285 // plane (find clusters, decouple them from each other, merge them (if
1286 // necessary), pick up coupled pads, call the fitting function)
1287
1288 Int_t nx = mlem->GetNbinsX();
1289 Int_t ny = mlem->GetNbinsY();
1290 Int_t nPix = fPixArray->GetEntriesFast();
1291
1292 Bool_t *used = new Bool_t[ny*nx];
1293 Double_t cont;
1294 Int_t nclust = 0, indx, indx1;
1295
1296 for (Int_t i=0; i<ny*nx; i++) used[i] = kFALSE;
1297
1298 TObjArray *clusters[200]={0};
1299 TObjArray *pix;
1300
1301 // Find clusters of histogram bins (easier to work in 2-D space)
1302 for (Int_t i=1; i<=ny; i++) {
1303 for (Int_t j=1; j<=nx; j++) {
1304 indx = (i-1)*nx + j - 1;
1305 if (used[indx]) continue;
1306 cont = mlem->GetCellContent(j,i);
1307 if (cont < 0.5) continue;
1308 pix = new TObjArray(20);
1309 used[indx] = 1;
1310 pix->Add(BinToPix(mlem,j,i));
1311 AddBin(mlem, i, j, 0, used, pix); // recursive call
2b1e4f0e 1312 if (nclust >= 200) AliFatal(" Too many clusters !!!");
0df3ca52 1313 clusters[nclust++] = pix;
0df3ca52 1314 } // for (Int_t j=1; j<=nx; j++) {
1315 } // for (Int_t i=1; i<=ny;
2b1e4f0e 1316 if (fDebug) cout << nclust << endl;
0df3ca52 1317 delete [] used; used = 0;
1318
1319 // Compute couplings between clusters and clusters to pads
1320 Int_t npad = fnPads[0] + fnPads[1];
1321
2b1e4f0e 1322 // Write out some information for algorithm development
1323 Int_t cath=0, npadx[2]={0}, npady[2]={0};
1324 Double_t xlow[2]={9999,9999}, xhig[2]={-9999,-9999};
1325 Double_t ylow[2]={9999,9999}, yhig[2]={-9999,-9999};
1326 for (Int_t j=0; j<npad; j++) {
1327 if (fXyq[3][j] < 0) continue; // exclude virtual pads
1328 cath = fPadIJ[0][j];
1329 if (fXyq[0][j] < xlow[cath]-0.001) {
1330 if (fXyq[0][j]+fXyq[3][j] <= xlow[cath] && npadx[cath]) npadx[cath]++;
1331 xlow[cath] = fXyq[0][j];
1332 }
1333 if (fXyq[0][j] > xhig[cath]+0.001) {
1334 if (fXyq[0][j]-fXyq[3][j] >= xhig[cath]) npadx[cath]++;
1335 xhig[cath] = fXyq[0][j];
1336 }
1337 if (fXyq[1][j] < ylow[cath]-0.001) {
1338 if (fXyq[1][j]+fXyq[4][j] <= ylow[cath] && npady[cath]) npady[cath]++;
1339 ylow[cath] = fXyq[1][j];
1340 }
1341 if (fXyq[1][j] > yhig[cath]+0.001) {
1342 if (fXyq[1][j]-fXyq[4][j] >= yhig[cath]) npady[cath]++;
1343 yhig[cath] = fXyq[1][j];
1344 }
1345 }
1346 //if (lun1) fprintf(lun1," %4d %2d %3d %3d %3d %3d \n",gAlice->GetHeader()->GetEvent(),AliMUONClusterInput::Instance()->Chamber(), npadx[0], npadx[1], npady[0], npady[1]);
1347
0df3ca52 1348 // Exclude pads with overflows
1349 for (Int_t j=0; j<npad; j++) {
0627f609 1350 if (fXyq[2][j] > fgkSaturation-1) fPadIJ[1][j] = -5;
0df3ca52 1351 else fPadIJ[1][j] = 0;
1352 }
1353
1354 // Compute couplings of clusters to pads
c1aed84f 1355 TMatrixD *aijclupad = new TMatrixD(nclust,npad);
1356 *aijclupad = 0;
0df3ca52 1357 Int_t npxclu;
1358 for (Int_t iclust=0; iclust<nclust; iclust++) {
1359 pix = clusters[iclust];
1360 npxclu = pix->GetEntriesFast();
1361 for (Int_t i=0; i<npxclu; i++) {
1362 indx = fPixArray->IndexOf(pix->UncheckedAt(i));
1363 for (Int_t j=0; j<npad; j++) {
2b1e4f0e 1364 if (fPadIJ[1][j] < 0 && fPadIJ[1][j] != -5) continue;
343146bf 1365 if (coef[j*nPix+indx] < fgkCouplMin) continue;
c1aed84f 1366 (*aijclupad)(iclust,j) += coef[j*nPix+indx];
0df3ca52 1367 }
1368 }
1369 }
1370 // Compute couplings between clusters
c1aed84f 1371 TMatrixD *aijcluclu = new TMatrixD(nclust,nclust);
1372 *aijcluclu = 0;
0df3ca52 1373 for (Int_t iclust=0; iclust<nclust; iclust++) {
1374 for (Int_t j=0; j<npad; j++) {
1375 // Exclude overflows
1376 if (fPadIJ[1][j] < 0) continue;
343146bf 1377 if ((*aijclupad)(iclust,j) < fgkCouplMin) continue;
0df3ca52 1378 for (Int_t iclust1=iclust+1; iclust1<nclust; iclust1++) {
343146bf 1379 if ((*aijclupad)(iclust1,j) < fgkCouplMin) continue;
c1aed84f 1380 (*aijcluclu)(iclust,iclust1) +=
1381 TMath::Sqrt ((*aijclupad)(iclust,j)*(*aijclupad)(iclust1,j));
0df3ca52 1382 }
1383 }
1384 }
1385 for (Int_t iclust=0; iclust<nclust; iclust++) {
1386 for (Int_t iclust1=iclust+1; iclust1<nclust; iclust1++) {
c1aed84f 1387 (*aijcluclu)(iclust1,iclust) = (*aijcluclu)(iclust,iclust1);
0df3ca52 1388 }
1389 }
1390
2b1e4f0e 1391 if (fDebug && nclust > 1) aijcluclu->Print();
0df3ca52 1392
1393 // Find groups of coupled clusters
1394 used = new Bool_t[nclust];
1395 for (Int_t i=0; i<nclust; i++) used[i] = kFALSE;
1396 Int_t *clustNumb = new Int_t[nclust];
1397 Int_t nCoupled, nForFit, minGroup[3], clustFit[3], nfit = 0;
1398 Double_t parOk[8];
1399
1400 for (Int_t igroup=0; igroup<nclust; igroup++) {
1401 if (used[igroup]) continue;
1402 used[igroup] = kTRUE;
1403 clustNumb[0] = igroup;
1404 nCoupled = 1;
1405 // Find group of coupled clusters
c1aed84f 1406 AddCluster(igroup, nclust, aijcluclu, used, clustNumb, nCoupled); // recursive
2b1e4f0e 1407 if (fDebug) {
1408 cout << " nCoupled: " << nCoupled << endl;
1409 for (Int_t i=0; i<nCoupled; i++) cout << clustNumb[i] << " "; cout << endl;
1410 }
1411 fnCoupled = nCoupled;
0df3ca52 1412
1413 while (nCoupled > 0) {
1414
1415 if (nCoupled < 4) {
1416 nForFit = nCoupled;
1417 for (Int_t i=0; i<nCoupled; i++) clustFit[i] = clustNumb[i];
1418 } else {
1419 // Too many coupled clusters to fit - try to decouple them
1420 // Find the lowest coupling of 1, 2, min(3,nLinks/2) pixels with
1421 // all the others in the group
1422 for (Int_t j=0; j<3; j++) minGroup[j] = -1;
c1aed84f 1423 Double_t coupl = MinGroupCoupl(nCoupled, clustNumb, aijcluclu, minGroup);
0df3ca52 1424
1425 // Flag clusters for fit
1426 nForFit = 0;
1427 while (minGroup[nForFit] >= 0 && nForFit < 3) {
2b1e4f0e 1428 if (fDebug) cout << clustNumb[minGroup[nForFit]] << " ";
0df3ca52 1429 clustFit[nForFit] = clustNumb[minGroup[nForFit]];
1430 clustNumb[minGroup[nForFit]] -= 999;
1431 nForFit++;
1432 }
2b1e4f0e 1433 if (fDebug) cout << nForFit << " " << coupl << endl;
0df3ca52 1434 } // else
1435
1436 // Select pads for fit.
c1aed84f 1437 if (SelectPad(nCoupled, nForFit, clustNumb, clustFit, aijclupad) < 3 && nCoupled > 1) {
0df3ca52 1438 // Deselect pads
2b1e4f0e 1439 for (Int_t j=0; j<npad; j++) {
1440 if (TMath::Abs(fPadIJ[1][j]) == 1) fPadIJ[1][j] = 0;
1441 if (TMath::Abs(fPadIJ[1][j]) == -9) fPadIJ[1][j] = -5;
1442 }
0df3ca52 1443 // Merge the failed cluster candidates (with too few pads to fit) with
1444 // the one with the strongest coupling
c1aed84f 1445 Merge(nForFit, nCoupled, clustNumb, clustFit, clusters, aijcluclu, aijclupad);
0df3ca52 1446 } else {
1447 // Do the fit
0627f609 1448 nfit = Fit(0, nForFit, clustFit, clusters, parOk);
0df3ca52 1449 }
1450
1451 // Subtract the fitted charges from pads with strong coupling and/or
1452 // return pads for further use
1453 UpdatePads(nfit, parOk);
1454
1455 // Mark used pads
2b1e4f0e 1456 for (Int_t j=0; j<npad; j++) {
1457 if (fPadIJ[1][j] == 1) fPadIJ[1][j] = -1;
1458 if (fPadIJ[1][j] == -9) fPadIJ[1][j] = -5;
1459 }
0df3ca52 1460
1461 // Sort the clusters (move to the right the used ones)
1462 Int_t beg = 0, end = nCoupled - 1;
1463 while (beg < end) {
1464 if (clustNumb[beg] >= 0) { beg++; continue; }
1465 for (Int_t j=end; j>beg; j--) {
1466 if (clustNumb[j] < 0) continue;
1467 end = j - 1;
1468 indx = clustNumb[beg];
1469 clustNumb[beg] = clustNumb[j];
1470 clustNumb[j] = indx;
1471 break;
1472 }
1473 beg++;
1474 }
1475
1476 nCoupled -= nForFit;
1477 if (nCoupled > 3) {
1478 // Remove couplings of used clusters
1479 for (Int_t iclust=nCoupled; iclust<nCoupled+nForFit; iclust++) {
1480 indx = clustNumb[iclust] + 999;
1481 for (Int_t iclust1=0; iclust1<nCoupled; iclust1++) {
1482 indx1 = clustNumb[iclust1];
c1aed84f 1483 (*aijcluclu)(indx,indx1) = (*aijcluclu)(indx1,indx) = 0;
0df3ca52 1484 }
1485 }
1486
1487 // Update the remaining clusters couplings (exclude couplings from
1488 // the used pads)
1489 for (Int_t j=0; j<npad; j++) {
1490 if (fPadIJ[1][j] != -1) continue;
1491 for (Int_t iclust=0; iclust<nCoupled; iclust++) {
1492 indx = clustNumb[iclust];
343146bf 1493 if ((*aijclupad)(indx,j) < fgkCouplMin) continue;
0df3ca52 1494 for (Int_t iclust1=iclust+1; iclust1<nCoupled; iclust1++) {
1495 indx1 = clustNumb[iclust1];
343146bf 1496 if ((*aijclupad)(indx1,j) < fgkCouplMin) continue;
0df3ca52 1497 // Check this
c1aed84f 1498 (*aijcluclu)(indx,indx1) -=
1499 TMath::Sqrt ((*aijclupad)(indx,j)*(*aijclupad)(indx1,j));
1500 (*aijcluclu)(indx1,indx) = (*aijcluclu)(indx,indx1);
0df3ca52 1501 }
1502 }
2b1e4f0e 1503 fPadIJ[1][j] = -8;
0df3ca52 1504 } // for (Int_t j=0; j<npad;
1505 } // if (nCoupled > 3)
1506 } // while (nCoupled > 0)
1507 } // for (Int_t igroup=0; igroup<nclust;
1508
c1aed84f 1509 aijcluclu->Delete(); aijclupad->Delete();
0df3ca52 1510 for (Int_t iclust=0; iclust<nclust; iclust++) {
1511 pix = clusters[iclust];
1512 pix->Clear();
1513 delete pix; pix = 0;
1514 }
1515 delete [] clustNumb; clustNumb = 0; delete [] used; used = 0;
1516}
1517
1518//_____________________________________________________________________________
1519void AliMUONClusterFinderAZ::AddBin(TH2D *mlem, Int_t ic, Int_t jc, Int_t mode, Bool_t *used, TObjArray *pix)
1520{
1521 // Add a bin to the cluster
1522
1523 Int_t nx = mlem->GetNbinsX();
1524 Int_t ny = mlem->GetNbinsY();
1525 Double_t cont1, cont = mlem->GetCellContent(jc,ic);
1526 AliMUONPixel *pixPtr = 0;
1527
1528 for (Int_t i=TMath::Max(ic-1,1); i<=TMath::Min(ic+1,ny); i++) {
1529 for (Int_t j=TMath::Max(jc-1,1); j<=TMath::Min(jc+1,nx); j++) {
1530 if (i != ic && j != jc) continue;
1531 if (used[(i-1)*nx+j-1]) continue;
1532 cont1 = mlem->GetCellContent(j,i);
1533 if (mode && cont1 > cont) continue;
1534 used[(i-1)*nx+j-1] = kTRUE;
1535 if (cont1 < 0.5) continue;
1536 if (pix) pix->Add(BinToPix(mlem,j,i));
1537 else {
1538 pixPtr = new AliMUONPixel (mlem->GetXaxis()->GetBinCenter(j),
1539 mlem->GetYaxis()->GetBinCenter(i), 0, 0, cont1);
1540 fPixArray->Add((TObject*)pixPtr);
1541 }
1542 AddBin(mlem, i, j, mode, used, pix); // recursive call
1543 }
1544 }
1545}
1546
1547//_____________________________________________________________________________
1548TObject* AliMUONClusterFinderAZ::BinToPix(TH2D *mlem, Int_t jc, Int_t ic)
1549{
1550 // Translate histogram bin to pixel
1551
1552 Double_t yc = mlem->GetYaxis()->GetBinCenter(ic);
1553 Double_t xc = mlem->GetXaxis()->GetBinCenter(jc);
1554
1555 Int_t nPix = fPixArray->GetEntriesFast();
0627f609 1556 AliMUONPixel *pixPtr = NULL;
0df3ca52 1557
1558 // Compare pixel and bin positions
1559 for (Int_t i=0; i<nPix; i++) {
1560 pixPtr = (AliMUONPixel*) fPixArray->UncheckedAt(i);
1561 if (pixPtr->Charge() < 0.5) continue;
1562 if (TMath::Abs(pixPtr->Coord(0)-xc)<1.e-4 && TMath::Abs(pixPtr->Coord(1)-yc)<1.e-4) return (TObject*) pixPtr;
1563 }
94eb555e 1564 AliError(Form(" Something wrong ??? %f %f ", xc, yc));
0df3ca52 1565 return NULL;
1566}
1567
1568//_____________________________________________________________________________
c1aed84f 1569void AliMUONClusterFinderAZ::AddCluster(Int_t ic, Int_t nclust, TMatrixD *aijcluclu, Bool_t *used, Int_t *clustNumb, Int_t &nCoupled)
0df3ca52 1570{
1571 // Add a cluster to the group of coupled clusters
1572
1573 for (Int_t i=0; i<nclust; i++) {
1574 if (used[i]) continue;
343146bf 1575 if ((*aijcluclu)(i,ic) < fgkCouplMin) continue;
0df3ca52 1576 used[i] = kTRUE;
1577 clustNumb[nCoupled++] = i;
c1aed84f 1578 AddCluster(i, nclust, aijcluclu, used, clustNumb, nCoupled);
0df3ca52 1579 }
1580}
1581
1582//_____________________________________________________________________________
c1aed84f 1583Double_t AliMUONClusterFinderAZ::MinGroupCoupl(Int_t nCoupled, Int_t *clustNumb, TMatrixD *aijcluclu, Int_t *minGroup)
0df3ca52 1584{
1585 // Find group of clusters with minimum coupling to all the others
1586
1587 Int_t i123max = TMath::Min(3,nCoupled/2);
1588 Int_t indx, indx1, indx2, indx3, nTot = 0;
1589 Double_t *coupl1 = 0, *coupl2 = 0, *coupl3 = 0;
1590
1591 for (Int_t i123=1; i123<=i123max; i123++) {
1592
1593 if (i123 == 1) {
1594 coupl1 = new Double_t [nCoupled];
1595 for (Int_t i=0; i<nCoupled; i++) coupl1[i] = 0;
1596 }
1597 else if (i123 == 2) {
1598 nTot = nCoupled*nCoupled;
1599 coupl2 = new Double_t [nTot];
1600 for (Int_t i=0; i<nTot; i++) coupl2[i] = 9999;
1601 } else {
1602 nTot = nTot*nCoupled;
1603 coupl3 = new Double_t [nTot];
1604 for (Int_t i=0; i<nTot; i++) coupl3[i] = 9999;
1605 } // else
1606
1607 for (Int_t i=0; i<nCoupled; i++) {
1608 indx1 = clustNumb[i];
1609 for (Int_t j=i+1; j<nCoupled; j++) {
1610 indx2 = clustNumb[j];
1611 if (i123 == 1) {
c1aed84f 1612 coupl1[i] += (*aijcluclu)(indx1,indx2);
1613 coupl1[j] += (*aijcluclu)(indx1,indx2);
0df3ca52 1614 }
1615 else if (i123 == 2) {
1616 indx = i*nCoupled + j;
1617 coupl2[indx] = coupl1[i] + coupl1[j];
c1aed84f 1618 coupl2[indx] -= 2 * ((*aijcluclu)(indx1,indx2));
0df3ca52 1619 } else {
1620 for (Int_t k=j+1; k<nCoupled; k++) {
1621 indx3 = clustNumb[k];
1622 indx = i*nCoupled*nCoupled + j*nCoupled + k;
1623 coupl3[indx] = coupl2[i*nCoupled+j] + coupl1[k];
c1aed84f 1624 coupl3[indx] -= 2 * ((*aijcluclu)(indx1,indx3)+(*aijcluclu)(indx2,indx3));
0df3ca52 1625 }
1626 } // else
1627 } // for (Int_t j=i+1;
1628 } // for (Int_t i=0;
1629 } // for (Int_t i123=1;
1630
1631 // Find minimum coupling
1632 Double_t couplMin = 9999;
1633 Int_t locMin = 0;
1634
1635 for (Int_t i123=1; i123<=i123max; i123++) {
1636 if (i123 == 1) {
1637 locMin = TMath::LocMin(nCoupled, coupl1);
1638 couplMin = coupl1[locMin];
1639 minGroup[0] = locMin;
1640 delete [] coupl1; coupl1 = 0;
1641 }
1642 else if (i123 == 2) {
1643 locMin = TMath::LocMin(nCoupled*nCoupled, coupl2);
1644 if (coupl2[locMin] < couplMin) {
1645 couplMin = coupl2[locMin];
1646 minGroup[0] = locMin/nCoupled;
1647 minGroup[1] = locMin%nCoupled;
1648 }
1649 delete [] coupl2; coupl2 = 0;
1650 } else {
1651 locMin = TMath::LocMin(nTot, coupl3);
1652 if (coupl3[locMin] < couplMin) {
1653 couplMin = coupl3[locMin];
1654 minGroup[0] = locMin/nCoupled/nCoupled;
1655 minGroup[1] = locMin%(nCoupled*nCoupled)/nCoupled;
1656 minGroup[2] = locMin%nCoupled;
1657 }
1658 delete [] coupl3; coupl3 = 0;
1659 } // else
1660 } // for (Int_t i123=1;
1661 return couplMin;
1662}
1663
1664//_____________________________________________________________________________
c1aed84f 1665Int_t AliMUONClusterFinderAZ::SelectPad(Int_t nCoupled, Int_t nForFit, Int_t *clustNumb, Int_t *clustFit, TMatrixD *aijclupad)
0df3ca52 1666{
1667 // Select pads for fit. If too many coupled clusters, find pads giving
1668 // the strongest coupling with the rest of clusters and exclude them from the fit.
1669
1670 Int_t npad = fnPads[0] + fnPads[1];
c1aed84f 1671 Double_t *padpix = 0;
0df3ca52 1672
1673 if (nCoupled > 3) {
c1aed84f 1674 padpix = new Double_t[npad];
1675 for (Int_t i=0; i<npad; i++) padpix[i] = 0;
0df3ca52 1676 }
1677
1678 Int_t nOK = 0, indx, indx1;
1679 for (Int_t iclust=0; iclust<nForFit; iclust++) {
1680 indx = clustFit[iclust];
1681 for (Int_t j=0; j<npad; j++) {
343146bf 1682 if ((*aijclupad)(indx,j) < fgkCouplMin) continue;
2b1e4f0e 1683 if (fPadIJ[1][j] == -5) fPadIJ[1][j] = -9; // flag overflow
1684 if (fPadIJ[1][j] < 0) continue; // exclude overflows and used pads
1685 if (!fPadIJ[1][j]) { fPadIJ[1][j] = 1; nOK++; } // pad to be used in fit
0df3ca52 1686 if (nCoupled > 3) {
1687 // Check other clusters
1688 for (Int_t iclust1=0; iclust1<nCoupled; iclust1++) {
1689 indx1 = clustNumb[iclust1];
1690 if (indx1 < 0) continue;
343146bf 1691 if ((*aijclupad)(indx1,j) < fgkCouplMin) continue;
c1aed84f 1692 padpix[j] += (*aijclupad)(indx1,j);
0df3ca52 1693 }
1694 } // if (nCoupled > 3)
1695 } // for (Int_t j=0; j<npad;
1696 } // for (Int_t iclust=0; iclust<nForFit
1697 if (nCoupled < 4) return nOK;
1698
1699 Double_t aaa = 0;
1700 for (Int_t j=0; j<npad; j++) {
343146bf 1701 if (padpix[j] < fgkCouplMin) continue;
2b1e4f0e 1702 if (fDebug) cout << j << " " << padpix[j] << " " << fXyq[0][j] << " " << fXyq[1][j] << endl;
c1aed84f 1703 aaa += padpix[j];
0df3ca52 1704 fPadIJ[1][j] = -1; // exclude pads with strong coupling to the other clusters
1705 nOK--;
1706 }
c1aed84f 1707 delete [] padpix; padpix = 0;
0df3ca52 1708 return nOK;
1709}
1710
1711//_____________________________________________________________________________
c1aed84f 1712void AliMUONClusterFinderAZ::Merge(Int_t nForFit, Int_t nCoupled, Int_t *clustNumb, Int_t *clustFit, TObjArray **clusters, TMatrixD *aijcluclu, TMatrixD *aijclupad)
0df3ca52 1713{
1714 // Merge the group of clusters with the one having the strongest coupling with them
1715
1716 Int_t indx, indx1, npxclu, npxclu1, imax=0;
1717 TObjArray *pix, *pix1;
1718 Double_t couplMax;
1719
1720 for (Int_t icl=0; icl<nForFit; icl++) {
1721 indx = clustFit[icl];
1722 pix = clusters[indx];
1723 npxclu = pix->GetEntriesFast();
1724 couplMax = -1;
1725 for (Int_t icl1=0; icl1<nCoupled; icl1++) {
1726 indx1 = clustNumb[icl1];
1727 if (indx1 < 0) continue;
c1aed84f 1728 if ((*aijcluclu)(indx,indx1) > couplMax) {
1729 couplMax = (*aijcluclu)(indx,indx1);
0df3ca52 1730 imax = indx1;
1731 }
1732 } // for (Int_t icl1=0;
343146bf 1733 /*if (couplMax < fgkCouplMin) {
0df3ca52 1734 cout << " Oops " << couplMax << endl;
c1aed84f 1735 aijcluclu->Print();
0df3ca52 1736 cout << icl << " " << indx << " " << npxclu << " " << nLinks << endl;
1737 ::exit(0);
1738 }*/
1739 // Add to it
1740 pix1 = clusters[imax];
1741 npxclu1 = pix1->GetEntriesFast();
1742 // Add pixels
1743 for (Int_t i=0; i<npxclu; i++) { pix1->Add(pix->UncheckedAt(i)); pix->RemoveAt(i); }
2b1e4f0e 1744 if (fDebug) cout << " New number of pixels: " << npxclu1 << " " << pix1->GetEntriesFast() << endl;
0df3ca52 1745 //Add cluster-to-cluster couplings
c1aed84f 1746 //aijcluclu->Print();
0df3ca52 1747 for (Int_t icl1=0; icl1<nCoupled; icl1++) {
1748 indx1 = clustNumb[icl1];
1749 if (indx1 < 0 || indx1 == imax) continue;
c1aed84f 1750 (*aijcluclu)(indx1,imax) += (*aijcluclu)(indx,indx1);
1751 (*aijcluclu)(imax,indx1) = (*aijcluclu)(indx1,imax);
0df3ca52 1752 }
c1aed84f 1753 (*aijcluclu)(indx,imax) = (*aijcluclu)(imax,indx) = 0;
1754 //aijcluclu->Print();
0df3ca52 1755 //Add cluster-to-pad couplings
1756 for (Int_t j=0; j<fnPads[0]+fnPads[1]; j++) {
2b1e4f0e 1757 if (fPadIJ[1][j] < 0 && fPadIJ[1][j] != -5) continue; // exclude used pads
c1aed84f 1758 (*aijclupad)(imax,j) += (*aijclupad)(indx,j);
1759 (*aijclupad)(indx,j) = 0;
0df3ca52 1760 }
1761 } // for (Int_t icl=0; icl<nForFit;
1762}
1763
1764//_____________________________________________________________________________
0627f609 1765Int_t AliMUONClusterFinderAZ::Fit(Int_t iSimple, Int_t nfit, Int_t *clustFit, TObjArray **clusters, Double_t *parOk)
0df3ca52 1766{
1767 // Find selected clusters to selected pad charges
1768
1769 TH2D *mlem = (TH2D*) gROOT->FindObject("mlem");
0df3ca52 1770 Double_t xmin = mlem->GetXaxis()->GetXmin() - mlem->GetXaxis()->GetBinWidth(1);
1771 Double_t xmax = mlem->GetXaxis()->GetXmax() + mlem->GetXaxis()->GetBinWidth(1);
1772 Double_t ymin = mlem->GetYaxis()->GetXmin() - mlem->GetYaxis()->GetBinWidth(1);
1773 Double_t ymax = mlem->GetYaxis()->GetXmax() + mlem->GetYaxis()->GetBinWidth(1);
2b1e4f0e 1774 Double_t step[3]={0.01,0.002,0.02}, xPad = 0, yPad = 99999;
0df3ca52 1775
2b1e4f0e 1776 // Number of pads to use and number of virtual pads
0627f609 1777 Int_t npads = 0, nVirtual = 0, nfit0 = nfit;
2b1e4f0e 1778 for (Int_t i=0; i<fnPads[0]+fnPads[1]; i++) {
2b1e4f0e 1779 if (fXyq[3][i] < 0) nVirtual++;
1780 if (fPadIJ[1][i] != 1) continue;
0627f609 1781 if (fXyq[3][i] > 0) {
1782 npads++;
1783 if (yPad > 9999) {
1784 xPad = fXyq[0][i];
1785 yPad = fXyq[1][i];
1786 } else {
1787 if (fXyq[4][i] < fXyq[3][i]) yPad = fXyq[1][i];
1788 else xPad = fXyq[0][i];
1789 }
1790 }
2b1e4f0e 1791 }
1792 if (fDebug) {
1793 for (Int_t i=0; i<nfit; i++) {cout << i+1 << " " << clustFit[i] << " ";}
1794 cout << nfit << endl;
1795 cout << " Number of pads to fit: " << npads << endl;
1796 }
0df3ca52 1797 fNpar = 0;
1798 fQtot = 0;
1799 if (npads < 2) return 0;
0627f609 1800
1801 Int_t digit = 0;
2b1e4f0e 1802 AliMUONDigit *mdig = 0;
1803 Int_t tracks[3] = {-1, -1, -1};
1804 for (Int_t cath=0; cath<2; cath++) {
1805 for (Int_t i=0; i<fnPads[0]+fnPads[1]; i++) {
1806 if (fPadIJ[0][i] != cath) continue;
1807 if (fPadIJ[1][i] != 1) continue;
1808 if (fXyq[3][i] < 0) continue; // exclude virtual pads
1809 digit = TMath::Nint (fXyq[5][i]);
1810 if (digit >= 0) mdig = fInput->Digit(cath,digit);
1811 else mdig = fInput->Digit(TMath::Even(cath),-digit-1);
1812 //if (!mdig) mdig = fInput->Digit(TMath::Even(cath),digit);
1813 if (!mdig) continue; // protection for cluster display
1814 if (mdig->Hit() >= 0) {
1815 if (tracks[0] < 0) {
1816 tracks[0] = mdig->Hit();
1817 tracks[1] = mdig->Track(0);
1818 } else if (mdig->Track(0) < tracks[1]) {
1819 tracks[0] = mdig->Hit();
1820 tracks[1] = mdig->Track(0);
1821 }
1822 }
2b1e4f0e 1823 if (mdig->Track(1) >= 0 && mdig->Track(1) != tracks[1]) {
1824 if (tracks[2] < 0) tracks[2] = mdig->Track(1);
1825 else tracks[2] = TMath::Min (tracks[2], mdig->Track(1));
1826 }
1827 //if (!mdig) break;
1828 //cout << mdig->Hit() << " " << mdig->Track(0) << " " << mdig->Track(1) <<endl;
1829 } // for (Int_t i=0;
1830 } // for (Int_t cath=0;
1831 //cout << tracks[0] << " " << tracks[1] << " " << tracks[2] <<endl;
1832
1833 // Get number of pads in X and Y
1834 Int_t nInX = 0, nInY;
1835 PadsInXandY(nInX, nInY);
1af223d7 1836 //cout << " nInX and Y: " << nInX << " " << nInY << endl;
2b1e4f0e 1837
0627f609 1838 Int_t nfitMax = 3;
1839 nfitMax = TMath::Min (nfitMax, (npads + 1) / 3);
1840 if (nfitMax > 1) {
1841 if (nInX < 3 && nInY < 3 || nInX == 3 && nInY < 3 || nInX < 3 && nInY == 3) nfitMax = 1; // not enough pads in each direction
1842 }
1843 if (nfit > nfitMax) nfit = nfitMax;
1844
0df3ca52 1845 // Take cluster maxima as fitting seeds
2b1e4f0e 1846 TObjArray *pix;
0df3ca52 1847 AliMUONPixel *pixPtr;
2b1e4f0e 1848 Int_t npxclu;
1849 Double_t cont, cmax = 0, xseed = 0, yseed = 0, errOk[8], qq = 0;
f29ba3e1 1850 Double_t xyseed[3][2], qseed[3], xyCand[3][2] = {{0},{0}}, sigCand[3][2] = {{0},{0}};
2b1e4f0e 1851
0627f609 1852 for (Int_t ifit=1; ifit<=nfit0; ifit++) {
0df3ca52 1853 cmax = 0;
1854 pix = clusters[clustFit[ifit-1]];
1855 npxclu = pix->GetEntriesFast();
2b1e4f0e 1856 //qq = 0;
0df3ca52 1857 for (Int_t clu=0; clu<npxclu; clu++) {
1858 pixPtr = (AliMUONPixel*) pix->UncheckedAt(clu);
1859 cont = pixPtr->Charge();
1860 fQtot += cont;
1861 if (cont > cmax) {
1862 cmax = cont;
1863 xseed = pixPtr->Coord(0);
1864 yseed = pixPtr->Coord(1);
1865 }
2b1e4f0e 1866 qq += cont;
1867 /*
f29ba3e1 1868 xyCand[ifit-1][0] += pixPtr->Coord(0) * cont;
1869 xyCand[ifit-1][1] += pixPtr->Coord(1) * cont;
1870 sigCand[ifit-1][0] += pixPtr->Coord(0) * pixPtr->Coord(0) * cont;
1871 sigCand[ifit-1][1] += pixPtr->Coord(1) * pixPtr->Coord(1) * cont;
2b1e4f0e 1872 */
f29ba3e1 1873 xyCand[0][0] += pixPtr->Coord(0) * cont;
1874 xyCand[0][1] += pixPtr->Coord(1) * cont;
1875 sigCand[0][0] += pixPtr->Coord(0) * pixPtr->Coord(0) * cont;
1876 sigCand[0][1] += pixPtr->Coord(1) * pixPtr->Coord(1) * cont;
0df3ca52 1877 }
1878 xyseed[ifit-1][0] = xseed;
1879 xyseed[ifit-1][1] = yseed;
1880 qseed[ifit-1] = cmax;
2b1e4f0e 1881 /*
f29ba3e1 1882 xyCand[ifit-1][0] /= qq; // <x>
1883 xyCand[ifit-1][1] /= qq; // <y>
1884 sigCand[ifit-1][0] = sigCand[ifit-1][0]/qq - xyCand[ifit-1][0]*xyCand[ifit-1][0]; // <x^2> - <x>^2
1885 sigCand[ifit-1][0] = sigCand[ifit-1][0] > 0 ? TMath::Sqrt (sigCand[ifit-1][0]) : 0;
1886 sigCand[ifit-1][1] = sigCand[ifit-1][1]/qq - xyCand[ifit-1][1]*xyCand[ifit-1][1]; // <y^2> - <y>^2
1887 sigCand[ifit-1][1] = sigCand[ifit-1][1] > 0 ? TMath::Sqrt (sigCand[ifit-1][1]) : 0;
1888 cout << xyCand[ifit-1][0] << " " << xyCand[ifit-1][1] << " " << sigCand[ifit-1][0] << " " << sigCand[ifit-1][1] << endl;
2b1e4f0e 1889 */
0df3ca52 1890 } // for (Int_t ifit=1;
1891
f29ba3e1 1892 xyCand[0][0] /= qq; // <x>
1893 xyCand[0][1] /= qq; // <y>
1894 sigCand[0][0] = sigCand[0][0]/qq - xyCand[0][0]*xyCand[0][0]; // <x^2> - <x>^2
1895 sigCand[0][0] = sigCand[0][0] > 0 ? TMath::Sqrt (sigCand[0][0]) : 0;
1896 sigCand[0][1] = sigCand[0][1]/qq - xyCand[0][1]*xyCand[0][1]; // <y^2> - <y>^2
1897 sigCand[0][1] = sigCand[0][1] > 0 ? TMath::Sqrt (sigCand[0][1]) : 0;
1898 if (fDebug) cout << xyCand[0][0] << " " << xyCand[0][1] << " " << sigCand[0][0] << " " << sigCand[0][1] << endl;
2b1e4f0e 1899
0627f609 1900 Int_t nDof, maxSeed[3], nMax = 0;
0df3ca52 1901 Double_t fmin, chi2o = 9999, chi2n;
1902
0627f609 1903 TMath::Sort(nfit0, qseed, maxSeed, kTRUE); // in decreasing order
1904 /*
1905 Int_t itmp[100], localMax[100];
1906 Double_t maxVal[100];
1907 if (!iSimple && nfit < nfitMax) {
1908 // Try to split pixel cluster according to local maxima
1909 Int_t nfit1 = nfit;
1910 for (Int_t iclus = 0; iclus < nfit1; iclus++) {
1911 nMax = FindLocalMaxima (clusters[clustFit[maxSeed[iclus]]], localMax, maxVal);
1912 TH2D *hist = (TH2D*) gROOT->FindObject("anode1");
1913 if (nMax == 1) { hist->Delete(); continue; }
1914 // Add extra fitting seeds from local maxima
1915 Int_t ixseed = hist->GetXaxis()->FindBin(xyseed[maxSeed[iclus]][0]);
1916 Int_t iyseed = hist->GetYaxis()->FindBin(xyseed[maxSeed[iclus]][1]);
1917 Int_t nx = hist->GetNbinsX();
1918 TMath::Sort(nMax, maxVal, itmp, kTRUE); // in decreasing order
1919 for (Int_t j = 0; j < nMax; j++) {
1920 Int_t iyc = localMax[itmp[j]] / nx + 1;
1921 Int_t ixc = localMax[itmp[j]] % nx + 1;
1922 if (ixc == ixseed && iyc == iyseed) continue; // local max already taken for seeding
1923 xyseed[nfit][0] = hist->GetXaxis()->GetBinCenter(ixc);
1924 xyseed[nfit][1] = hist->GetYaxis()->GetBinCenter(iyc);
1925 qseed[nfit] = maxVal[itmp[j]];
1926 maxSeed[nfit] = nfit++;
1927 if (nfit >= nfitMax) break;
1928 }
1929 hist->Delete();
1930 if (nfit >= nfitMax) break;
1931 } // for (Int_t iclus = 0;
1932 //nfit0 = nfit;
1933 //TMath::Sort(nfit0, qseed, maxSeed, kTRUE); // in decreasing order
1934 } //if (!iSimple && nfit < nfitMax)
1935 */
0df3ca52 1936
a952ddec 1937 Double_t *gin = 0, func0, func1, param[8], step0[8];
1938 Double_t param0[2][8]={{0},{0}}, deriv[2][8]={{0},{0}};
0df3ca52 1939 Double_t shift[8], stepMax, derMax, parmin[8], parmax[8], func2[2], shift0;
1940 Double_t delta[8], scMax, dder[8], estim, shiftSave = 0;
1941 Int_t min, max, nCall = 0, memory[8] = {0}, nLoop, idMax = 0, iestMax = 0, nFail;
2b1e4f0e 1942 Double_t rad, dist[3] = {0};
0df3ca52 1943
0627f609 1944 // Try to fit with one-track hypothesis, then 2-track. If chi2/dof is
1945 // lower, try 3-track (if number of pads is sufficient).
0df3ca52 1946 for (Int_t iseed=0; iseed<nfit; iseed++) {
1947
2b1e4f0e 1948 if (iseed) { for (Int_t j=0; j<fNpar; j++) param[j] = parOk[j]; } // for bounded params
0df3ca52 1949 for (Int_t j=0; j<3; j++) step0[fNpar+j] = shift[fNpar+j] = step[j];
0627f609 1950 if (nfit == 1) param[fNpar] = xyCand[0][0]; // take COG
1951 else param[fNpar] = xyseed[maxSeed[iseed]][0];
0df3ca52 1952 parmin[fNpar] = xmin;
1953 parmax[fNpar++] = xmax;
0627f609 1954 if (nfit == 1) param[fNpar] = xyCand[0][1]; // take COG
1955 else param[fNpar] = xyseed[maxSeed[iseed]][1];
0df3ca52 1956 parmin[fNpar] = ymin;
1957 parmax[fNpar++] = ymax;
1958 if (fNpar > 2) {
1959 param[fNpar] = fNpar == 4 ? 0.5 : 0.3;
1960 parmin[fNpar] = 0;
1961 parmax[fNpar++] = 1;
1962 }
5a051e34 1963 if (iseed) { for (Int_t j=0; j<fNpar; j++) param0[1][j] = 0; }
0df3ca52 1964
1965 // Try new algorithm
1966 min = nLoop = 1; stepMax = func2[1] = derMax = 999999; nFail = 0;
1967
1968 while (1) {
1969 max = !min;
30178c30 1970 Fcn1(fNpar, gin, func0, param, 1); nCall++;
0df3ca52 1971 //cout << " Func: " << func0 << endl;
1972
1973 func2[max] = func0;
1974 for (Int_t j=0; j<fNpar; j++) {
1975 param0[max][j] = param[j];
1976 delta[j] = step0[j];
1977 param[j] += delta[j] / 10;
1978 if (j > 0) param[j-1] -= delta[j-1] / 10;
30178c30 1979 Fcn1(fNpar, gin, func1, param, 1); nCall++;
0df3ca52 1980 deriv[max][j] = (func1 - func0) / delta[j] * 10; // first derivative
1981 //cout << j << " " << deriv[max][j] << endl;
1982 dder[j] = param0[0][j] != param0[1][j] ? (deriv[0][j] - deriv[1][j]) /
a952ddec 1983 (param0[0][j] - param0[1][j]) : 0; // second derivative
0df3ca52 1984 }
1985 param[fNpar-1] -= delta[fNpar-1] / 10;
2b1e4f0e 1986 if (nCall > 2000) break;
0df3ca52 1987
1988 min = func2[0] < func2[1] ? 0 : 1;
1989 nFail = min == max ? 0 : nFail + 1;
1990
1991 stepMax = derMax = estim = 0;
1992 for (Int_t j=0; j<fNpar; j++) {
1993 // Estimated distance to minimum
1994 shift0 = shift[j];
1995 if (nLoop == 1) shift[j] = TMath::Sign (step0[j], -deriv[max][j]); // first step
1996 else if (TMath::Abs(deriv[0][j]) < 1.e-3 && TMath::Abs(deriv[1][j]) < 1.e-3) shift[j] = 0;
1997 else if (deriv[min][j]*deriv[!min][j] > 0 && TMath::Abs(deriv[min][j]) > TMath::Abs(deriv[!min][j])
2b1e4f0e 1998 //|| TMath::Abs(deriv[0][j]-deriv[1][j]) < 1.e-3) {
1999 || TMath::Abs(deriv[0][j]-deriv[1][j]) < 1.e-3 || TMath::Abs(dder[j]) < 1.e-6) {
0df3ca52 2000 shift[j] = -TMath::Sign (shift[j], (func2[0]-func2[1]) * (param0[0][j]-param0[1][j]));
2001 if (min == max) {
2002 if (memory[j] > 1) { shift[j] *= 2; } //cout << " Memory " << memory[j] << " " << shift[j] << endl; }
2003 memory[j]++;
2004 }
2005 } else {
2b1e4f0e 2006 shift[j] = dder[j] != 0 ? -deriv[min][j] / dder[j] : 0;
0df3ca52 2007 memory[j] = 0;
2008 }
2009 if (TMath::Abs(shift[j])/step0[j] > estim) {
2010 estim = TMath::Abs(shift[j])/step0[j];
2011 iestMax = j;
2012 }
2013
2014 // Too big step
2015 if (TMath::Abs(shift[j])/step0[j] > 10) shift[j] = TMath::Sign(10.,shift[j]) * step0[j]; //
2016
2017 // Failed to improve minimum
2018 if (min != max) {
2019 memory[j] = 0;
2020 param[j] = param0[min][j];
2021 if (TMath::Abs(shift[j]+shift0) > 0.1*step0[j]) shift[j] = (shift[j] + shift0) / 2;
2022 else shift[j] /= -2;
2023 }
2024
2025 // Too big step
2026 if (TMath::Abs(shift[j]*deriv[min][j]) > func2[min])
2027 shift[j] = TMath::Sign (func2[min]/deriv[min][j], shift[j]);
2028
2029 // Introduce step relaxation factor
2030 if (memory[j] < 3) {
2031 scMax = 1 + 4 / TMath::Max(nLoop/2.,1.);
2032 if (TMath::Abs(shift0) > 0 && TMath::Abs(shift[j]/shift0) > scMax)
2033 shift[j] = TMath::Sign (shift0*scMax, shift[j]);
2034 }
2035 param[j] += shift[j];
2b1e4f0e 2036 //AZ Check parameter limits 27-12-2004
2037 if (param[j] < parmin[j]) {
2038 shift[j] = parmin[j] - param[j];
2039 param[j] = parmin[j];
2040 } else if (param[j] > parmax[j]) {
2041 shift[j] = parmax[j] - param[j];
2042 param[j] = parmax[j];
2043 }
0df3ca52 2044 //cout << " xxx " << j << " " << shift[j] << " " << param[j] << endl;
2045 stepMax = TMath::Max (stepMax, TMath::Abs(shift[j]/step0[j]));
2046 if (TMath::Abs(deriv[min][j]) > derMax) {
2047 idMax = j;
2048 derMax = TMath::Abs (deriv[min][j]);
2049 }
2050 } // for (Int_t j=0; j<fNpar;
2051 //cout << max << " " << func2[min] << " " << derMax << " " << stepMax << " " << estim << " " << iestMax << " " << nCall << endl;
2b1e4f0e 2052 if (estim < 1 && derMax < 2 || nLoop > 150) break; // minimum was found
0df3ca52 2053
2054 nLoop++;
2055 // Check for small step
2056 if (shift[idMax] == 0) { shift[idMax] = step0[idMax]/10; param[idMax] += shift[idMax]; continue; }
2057 if (!memory[idMax] && derMax > 0.5 && nLoop > 10) {
2058 //cout << " ok " << deriv[min][idMax] << " " << deriv[!min][idMax] << " " << dder[idMax]*shift[idMax] << " " << shift[idMax] << endl;
2059 if (dder[idMax] != 0 && TMath::Abs(deriv[min][idMax]/dder[idMax]/shift[idMax]) > 10) {
2060 if (min == max) dder[idMax] = -dder[idMax];
2061 shift[idMax] = -deriv[min][idMax] / dder[idMax] / 10;
2062 param[idMax] += shift[idMax];
2063 stepMax = TMath::Max (stepMax, TMath::Abs(shift[idMax])/step0[idMax]);
2064 //cout << shift[idMax] << " " << param[idMax] << endl;
2065 if (min == max) shiftSave = shift[idMax];
2066 }
2067 if (nFail > 10) {
2068 param[idMax] -= shift[idMax];
2069 shift[idMax] = 4 * shiftSave * (gRandom->Rndm(0) - 0.5);
2070 param[idMax] += shift[idMax];
2071 //cout << shift[idMax] << endl;
2072 }
2073 }
2074 } // while (1)
2075 fmin = func2[min];
2076
2b1e4f0e 2077 nDof = npads - fNpar + nVirtual;
2078 if (!nDof) nDof++;
2079 chi2n = fmin / nDof;
2080 if (fDebug) cout << " Chi2 " << chi2n << " " << fNpar << endl;
0df3ca52 2081
2082 if (chi2n*1.2+1.e-6 > chi2o ) { fNpar -= 3; break; }
2b1e4f0e 2083
0df3ca52 2084 // Save parameters and errors
2b1e4f0e 2085
0627f609 2086 if (nInX == 1) {
2b1e4f0e 2087 // One pad per direction
2b1e4f0e 2088 for (Int_t i=0; i<fNpar; i++) if (i == 0 || i == 2 || i == 5) param0[min][i] = xPad;
2089 }
0627f609 2090 if (nInY == 1) {
2b1e4f0e 2091 // One pad per direction
2b1e4f0e 2092 for (Int_t i=0; i<fNpar; i++) if (i == 1 || i == 3 || i == 6) param0[min][i] = yPad;
2093 }
2094
2095 /*
2096 if (iseed > 0) {
2097 // Find distance to the nearest neighbour
2098 dist[0] = dist[1] = TMath::Sqrt ((param0[min][0]-param0[min][2])*
2099 (param0[min][0]-param0[min][2])
2100 +(param0[min][1]-param0[min][3])*
2101 (param0[min][1]-param0[min][3]));
2102 if (iseed > 1) {
2103 dist[2] = TMath::Sqrt ((param0[min][0]-param0[min][5])*
2104 (param0[min][0]-param0[min][5])
2105 +(param0[min][1]-param0[min][6])*
2106 (param0[min][1]-param0[min][6]));
2107 rad = TMath::Sqrt ((param0[min][2]-param0[min][5])*
2108 (param0[min][2]-param0[min][5])
2109 +(param0[min][3]-param0[min][6])*
2110 (param0[min][3]-param0[min][6]));
2111 if (dist[2] < dist[0]) dist[0] = dist[2];
2112 if (rad < dist[1]) dist[1] = rad;
2113 if (rad < dist[2]) dist[2] = rad;
2114 }
2115 cout << dist[0] << " " << dist[1] << " " << dist[2] << endl;
2116 if (dist[TMath::LocMin(iseed+1,dist)] < 1.) { fNpar -= 3; break; }
2117 }
2118 */
2119
0df3ca52 2120 for (Int_t i=0; i<fNpar; i++) {
2121 parOk[i] = param0[min][i];
0627f609 2122 //errOk[i] = fmin;
2123 errOk[i] = chi2n;
2b1e4f0e 2124 // Bounded params
2125 parOk[i] = TMath::Max (parOk[i], parmin[i]);
2126 parOk[i] = TMath::Min (parOk[i], parmax[i]);
0df3ca52 2127 }
2128
0df3ca52 2129 chi2o = chi2n;
2130 if (fmin < 0.1) break; // !!!???
2131 } // for (Int_t iseed=0;
2132
2b1e4f0e 2133 if (fDebug) {
2134 for (Int_t i=0; i<fNpar; i++) {
2b1e4f0e 2135 if (i == 4 || i == 7) {
2136 if (i == 7 || i == 4 && fNpar < 7) cout << parOk[i] << endl;
2137 else cout << parOk[i] * (1-parOk[7]) << endl;
2138 continue;
2139 }
2140 cout << parOk[i] << " " << errOk[i] << endl;
2141 }
0df3ca52 2142 }
2143 nfit = (fNpar + 1) / 3;
2b1e4f0e 2144 dist[0] = dist[1] = dist[2] = 0;
2145
2146 if (nfit > 1) {
2147 // Find distance to the nearest neighbour
2148 dist[0] = dist[1] = TMath::Sqrt ((parOk[0]-parOk[2])*
2149 (parOk[0]-parOk[2])
2150 +(parOk[1]-parOk[3])*
2151 (parOk[1]-parOk[3]));
2152 if (nfit > 2) {
2153 dist[2] = TMath::Sqrt ((parOk[0]-parOk[5])*
2154 (parOk[0]-parOk[5])
2155 +(parOk[1]-parOk[6])*
2156 (parOk[1]-parOk[6]));
2157 rad = TMath::Sqrt ((parOk[2]-parOk[5])*
2158 (parOk[2]-parOk[5])
2159 +(parOk[3]-parOk[6])*
2160 (parOk[3]-parOk[6]));
2161 if (dist[2] < dist[0]) dist[0] = dist[2];
2162 if (rad < dist[1]) dist[1] = rad;
2163 if (rad < dist[2]) dist[2] = rad;
2164 }
2165 }
2166
1af223d7 2167 Int_t indx;
2b1e4f0e 2168 fnPads[1] -= nVirtual;
cc87ebcd 2169 if (!fDraw) {
2170 Double_t coef = 0;
0627f609 2171 if (iSimple) fnCoupled = 0;
cc87ebcd 2172 //for (Int_t j=0; j<nfit; j++) {
2173 for (Int_t j=nfit-1; j>=0; j--) {
2174 indx = j<2 ? j*2 : j*2+1;
2175 if (nfit == 1) coef = 1;
2176 else coef = j==nfit-1 ? parOk[indx+2] : 1-coef;
2177 coef = TMath::Max (coef, 0.);
2178 if (nfit == 3 && j < 2) coef = j==1 ? coef*parOk[indx+2] : coef - parOk[7];
2179 coef = TMath::Max (coef, 0.);
0627f609 2180 AddRawCluster (parOk[indx], parOk[indx+1], coef*fQtot, errOk[indx], nfit0+10*nfit+100*nMax+10000*fnCoupled, tracks,
cc87ebcd 2181 //sigCand[maxSeed[j]][0], sigCand[maxSeed[j]][1]);
2182 //sigCand[0][0], sigCand[0][1], dist[j]);
2183 sigCand[0][0], sigCand[0][1], dist[TMath::LocMin(nfit,dist)]);
2184 }
2185 } else fDraw->FillMuon(nfit, parOk, errOk);
0df3ca52 2186 return nfit;
2187}
2188
2189//_____________________________________________________________________________
30178c30 2190void AliMUONClusterFinderAZ::Fcn1(Int_t & /*npar*/, Double_t * /*gin*/, Double_t &f, Double_t *par, Int_t /*iflag*/)
0df3ca52 2191{
2192 // Fit for one track
2b1e4f0e 2193 //AZ for Muinuit AliMUONClusterFinderAZ& c = *(AliMUONClusterFinderAZ::fgClusterFinder);
2194 AliMUONClusterFinderAZ& c = *this; //AZ
0df3ca52 2195
2196 Int_t cath, ix, iy, indx, npads=0;
2b1e4f0e 2197 Double_t charge, delta, coef=0, chi2=0, qTot = 0;
0df3ca52 2198 for (Int_t j=0; j<c.fnPads[0]+c.fnPads[1]; j++) {
2199 if (c.fPadIJ[1][j] != 1) continue;
2200 cath = c.fPadIJ[0][j];
2b1e4f0e 2201 if (c.fXyq[3][j] > 0) npads++; // exclude virtual pads
2202 qTot += c.fXyq[2][j];
0627f609 2203 ix = c.fPadIJ[2][j];
2204 iy = c.fPadIJ[3][j];
2205 c.fSegmentation[cath]->SetPad(ix, iy);
0df3ca52 2206 charge = 0;
2207 for (Int_t i=c.fNpar/3; i>=0; i--) { // sum over tracks
2208 indx = i<2 ? 2*i : 2*i+1;
0627f609 2209 c.fSegmentation[cath]->SetHit(par[indx], par[indx+1], c.fZpad);
0df3ca52 2210 if (c.fNpar == 2) coef = 1;
2211 else coef = i==c.fNpar/3 ? par[indx+2] : 1-coef;
2b1e4f0e 2212 coef = TMath::Max (coef, 0.);
0df3ca52 2213 if (c.fNpar == 8 && i < 2) coef = i==1 ? coef*par[indx+2] : coef - par[7];
2b1e4f0e 2214 coef = TMath::Max (coef, 0.);
0627f609 2215 charge += c.fInput->Mathieson()->IntXY(fInput->DetElemId(), c.fInput->Segmentation2(cath))*coef;
0df3ca52 2216 }
2217 charge *= c.fQtot;
0df3ca52 2218 delta = charge - c.fXyq[2][j];
2b1e4f0e 2219 delta *= delta;
2220 delta /= c.fXyq[2][j];
2221 //if (cath) delta /= 5; // just for test
2222 chi2 += delta;
0df3ca52 2223 } // for (Int_t j=0;
2224 f = chi2;
2b1e4f0e 2225 Double_t qAver = qTot/npads; //(c.fnPads[0]+c.fnPads[1]);
0df3ca52 2226 f = chi2/qAver;
2227}
2228
2229//_____________________________________________________________________________
6aaf81e6 2230void AliMUONClusterFinderAZ::UpdatePads(Int_t /*nfit*/, Double_t *par)
0df3ca52 2231{
2232 // Subtract the fitted charges from pads with strong coupling
2233
2234 Int_t cath, ix, iy, indx;
2235 Double_t charge, coef=0;
2236 for (Int_t j=0; j<fnPads[0]+fnPads[1]; j++) {
2237 if (fPadIJ[1][j] != -1) continue;
2238 if (fNpar != 0) {
2239 cath = fPadIJ[0][j];
0627f609 2240 ix = fPadIJ[2][j];
2241 iy = fPadIJ[3][j];
2242 fSegmentation[cath]->SetPad(ix, iy);
0df3ca52 2243 charge = 0;
2244 for (Int_t i=fNpar/3; i>=0; i--) { // sum over tracks
2245 indx = i<2 ? 2*i : 2*i+1;
0627f609 2246 fSegmentation[cath]->SetHit(par[indx], par[indx+1], fZpad);
0df3ca52 2247 if (fNpar == 2) coef = 1;
2248 else coef = i==fNpar/3 ? par[indx+2] : 1-coef;
2b1e4f0e 2249 coef = TMath::Max (coef, 0.);
0df3ca52 2250 if (fNpar == 8 && i < 2) coef = i==1 ? coef*par[indx+2] : coef - par[7];
2b1e4f0e 2251 coef = TMath::Max (coef, 0.);
0627f609 2252 charge += fInput->Mathieson()->IntXY(fInput->DetElemId(),fInput->Segmentation2(cath))*coef;
0df3ca52 2253 }
2254 charge *= fQtot;
2255 fXyq[2][j] -= charge;
2256 } // if (fNpar != 0)
0627f609 2257 if (fXyq[2][j] > fgkZeroSuppression) fPadIJ[1][j] = 0; // return pad for further using
0df3ca52 2258 } // for (Int_t j=0;
2259}
2260
2261//_____________________________________________________________________________
30178c30 2262Bool_t AliMUONClusterFinderAZ::TestTrack(Int_t /*t*/) const {
0df3ca52 2263// Test if track was user selected
2264 return kTRUE;
2265 /*
2266 if (fTrack[0]==-1 || fTrack[1]==-1) {
2267 return kTRUE;
2268 } else if (t==fTrack[0] || t==fTrack[1]) {
2269 return kTRUE;
2270 } else {
2271 return kFALSE;
2272 }
2273 */
2274}
2275
2276//_____________________________________________________________________________
2b1e4f0e 2277void AliMUONClusterFinderAZ::AddRawCluster(Double_t x, Double_t y, Double_t qTot, Double_t fmin, Int_t nfit, Int_t *tracks, Double_t /*sigx*/, Double_t /*sigy*/, Double_t /*dist*/)
0df3ca52 2278{
2279 //
2280 // Add a raw cluster copy to the list
2281 //
2b1e4f0e 2282 if (qTot <= 0.501) return;
0df3ca52 2283 AliMUONRawCluster cnew;
0df3ca52 2284
2b1e4f0e 2285 Int_t cath, npads[2] = {0}, nover[2] = {0};
2286 for (Int_t j=0; j<fnPads[0]+fnPads[1]; j++) {
2287 cath = fPadIJ[0][j];
2288 // There was an overflow
2289 if (fPadIJ[1][j] == -9) nover[cath]++;
2290 if (fPadIJ[1][j] != 1 && fPadIJ[1][j] != -9) continue;
2291 cnew.SetMultiplicity(cath,cnew.GetMultiplicity(cath)+1);
2292 if (fXyq[2][j] > cnew.GetPeakSignal(cath)) cnew.SetPeakSignal(cath,TMath::Nint (fXyq[2][j]));
2293 //cnew.SetCharge(cath,cnew.GetCharge(cath) + TMath::Nint (fXyq[2][j]));
2294 cnew.SetContrib(npads[cath],cath,fXyq[2][j]);
5a051e34 2295 cnew.SetIndex(npads[cath],cath,TMath::Nint (fXyq[5][j]));
2296 cnew.SetDetElemId(fInput->DetElemId());
2b1e4f0e 2297 npads[cath]++;
2298 }
2299
2300 cnew.SetClusterType(nover[0] + nover[1] * 100);
2301 for (Int_t j=0; j<3; j++) cnew.SetTrack(j,tracks[j]);
2302
0627f609 2303 Double_t xg, yg, zg;
0df3ca52 2304 for (cath=0; cath<2; cath++) {
0627f609 2305 // Perform local-to-global transformation
2306 fInput->Segmentation2(cath)->GetTransformer()->Local2Global(fInput->DetElemId(), x, y, fZpad, xg, yg, zg);
2307 cnew.SetX(cath, xg);
2308 cnew.SetY(cath, yg);
2309 cnew.SetZ(cath, zg);
2b1e4f0e 2310 cnew.SetCharge(cath, TMath::Nint(qTot));
2311 //cnew.SetPeakSignal(cath,20);
2312 //cnew.SetMultiplicity(cath, 5);
2313 cnew.SetNcluster(cath, nfit);
2314 cnew.SetChi2(cath, fmin); //0.;1
0df3ca52 2315 }
2b1e4f0e 2316 // Evaluate measurement errors
2317 //AZ Errors(&cnew);
2318
2319 cnew.SetGhost(nfit); //cnew.SetX(1,sigx); cnew.SetY(1,sigy); cnew.SetZ(1,dist);
0df3ca52 2320 //cnew.fClusterType=cnew.PhysicsContribution();
0627f609 2321 new((*fRawClusters)[fNRawClusters++]) AliMUONRawCluster(cnew);
2322 if (fDebug) cout << fNRawClusters << " " << fInput->Chamber() << endl;
0df3ca52 2323 //fNPeaks++;
2324}
2325
2326//_____________________________________________________________________________
0627f609 2327Int_t AliMUONClusterFinderAZ::FindLocalMaxima(TObjArray *pixArray, Int_t *localMax, Double_t *maxVal)
0df3ca52 2328{
2329 // Find local maxima in pixel space for large preclusters in order to
2330 // try to split them into smaller pieces (to speed up the MLEM procedure)
0627f609 2331 // or to find additional fitting seeds if clusters were not completely resolved
0df3ca52 2332
0627f609 2333 TH2D *hist = NULL;
2334 //if (pixArray == fPixArray) hist = (TH2D*) gROOT->FindObject("anode");
2335 //else { hist = (TH2D*) gROOT->FindObject("anode1"); cout << hist << endl; }
2336 //if (hist) hist->Delete();
0df3ca52 2337
cd747ddb 2338 Double_t xylim[4] = {999, 999, 999, 999};
0627f609 2339 Int_t nPix = pixArray->GetEntriesFast();
0df3ca52 2340 AliMUONPixel *pixPtr = 0;
2341 for (Int_t ipix=0; ipix<nPix; ipix++) {
0627f609 2342 pixPtr = (AliMUONPixel*) pixArray->UncheckedAt(ipix);
0df3ca52 2343 for (Int_t i=0; i<4; i++)
2344 xylim[i] = TMath::Min (xylim[i], (i%2 ? -1 : 1)*pixPtr->Coord(i/2));
2345 }
2346 for (Int_t i=0; i<4; i++) xylim[i] -= pixPtr->Size(i/2);
2347
2348 Int_t nx = TMath::Nint ((-xylim[1]-xylim[0])/pixPtr->Size(0)/2);
2349 Int_t ny = TMath::Nint ((-xylim[3]-xylim[2])/pixPtr->Size(1)/2);
0627f609 2350 if (pixArray == fPixArray) hist = new TH2D("anode","anode",nx,xylim[0],-xylim[1],ny,xylim[2],-xylim[3]);
2351 else hist = new TH2D("anode1","anode1",nx,xylim[0],-xylim[1],ny,xylim[2],-xylim[3]);
0df3ca52 2352 for (Int_t ipix=0; ipix<nPix; ipix++) {
0627f609 2353 pixPtr = (AliMUONPixel*) pixArray->UncheckedAt(ipix);
0df3ca52 2354 hist->Fill(pixPtr->Coord(0), pixPtr->Coord(1), pixPtr->Charge());
2355 }
0627f609 2356 if (fDraw && pixArray == fPixArray) fDraw->DrawHist("c2", hist);
0df3ca52 2357
2358 Int_t nMax = 0, indx;
2359 Int_t *isLocalMax = new Int_t[ny*nx];
2360 for (Int_t i=0; i<ny*nx; i++) isLocalMax[i] = 0;
2361
2362 for (Int_t i=1; i<=ny; i++) {
2363 indx = (i-1) * nx;
2364 for (Int_t j=1; j<=nx; j++) {
2365 if (hist->GetCellContent(j,i) < 0.5) continue;
2366 //if (isLocalMax[indx+j-1] < 0) continue;
2367 if (isLocalMax[indx+j-1] != 0) continue;
2368 FlagLocalMax(hist, i, j, isLocalMax);
2369 }
2370 }
2371
2372 for (Int_t i=1; i<=ny; i++) {
2373 indx = (i-1) * nx;
2374 for (Int_t j=1; j<=nx; j++) {
2375 if (isLocalMax[indx+j-1] > 0) {
2376 localMax[nMax] = indx + j - 1;
2377 maxVal[nMax++] = hist->GetCellContent(j,i);
2b1e4f0e 2378 if (nMax > 99) AliFatal(" Too many local maxima !!!");
0df3ca52 2379 }
0df3ca52 2380 }
2381 }
2b1e4f0e 2382 if (fDebug) cout << " Local max: " << nMax << endl;
0df3ca52 2383 delete [] isLocalMax; isLocalMax = 0;
2384 return nMax;
2385}
2386
2387//_____________________________________________________________________________
2388void AliMUONClusterFinderAZ::FlagLocalMax(TH2D *hist, Int_t i, Int_t j, Int_t *isLocalMax)
2389{
2390 // Flag pixels (whether or not local maxima)
2391
2392 Int_t nx = hist->GetNbinsX();
2393 Int_t ny = hist->GetNbinsY();
2394 Int_t cont = TMath::Nint (hist->GetCellContent(j,i));
0627f609 2395 Int_t cont1 = 0, indx = (i-1)*nx+j-1, indx1 = 0, indx2 = 0;
0df3ca52 2396
2397 for (Int_t i1=i-1; i1<i+2; i1++) {
2398 if (i1 < 1 || i1 > ny) continue;
0627f609 2399 indx1 = (i1 - 1) * nx;
0df3ca52 2400 for (Int_t j1=j-1; j1<j+2; j1++) {
2401 if (j1 < 1 || j1 > nx) continue;
2402 if (i == i1 && j == j1) continue;
0627f609 2403 indx2 = indx1 + j1 - 1;
0df3ca52 2404 cont1 = TMath::Nint (hist->GetCellContent(j1,i1));
0627f609 2405 if (cont < cont1) { isLocalMax[indx] = -1; return; }
2406 else if (cont > cont1) isLocalMax[indx2] = -1;
0df3ca52 2407 else { // the same charge
0627f609 2408 isLocalMax[indx] = 1;
2409 if (isLocalMax[indx2] == 0) {
0df3ca52 2410 FlagLocalMax(hist, i1, j1, isLocalMax);
0627f609 2411 if (isLocalMax[indx2] < 0) { isLocalMax[indx] = -1; return; }
2412 else isLocalMax[indx2] = -1;
0df3ca52 2413 }
2414 }
2415 }
2416 }
0627f609 2417 isLocalMax[indx] = 1; // local maximum
0df3ca52 2418}
2419
2420//_____________________________________________________________________________
2421void AliMUONClusterFinderAZ::FindCluster(Int_t *localMax, Int_t iMax)
2422{
2423 // Find pixel cluster around local maximum #iMax and pick up pads
2424 // overlapping with it
2425
2426 TH2D *hist = (TH2D*) gROOT->FindObject("anode");
2427 Int_t nx = hist->GetNbinsX();
2428 Int_t ny = hist->GetNbinsY();
2429 Int_t ic = localMax[iMax] / nx + 1;
2430 Int_t jc = localMax[iMax] % nx + 1;
2431 Bool_t *used = new Bool_t[ny*nx];
2432 for (Int_t i=0; i<ny*nx; i++) used[i] = kFALSE;
2433
2434 // Drop all pixels from the array - pick up only the ones from the cluster
2435 fPixArray->Delete();
2436
2437 Double_t wx = hist->GetXaxis()->GetBinWidth(1)/2;
2438 Double_t wy = hist->GetYaxis()->GetBinWidth(1)/2;
2439 Double_t yc = hist->GetYaxis()->GetBinCenter(ic);
2440 Double_t xc = hist->GetXaxis()->GetBinCenter(jc);
2441 Double_t cont = hist->GetCellContent(jc,ic);
2442 AliMUONPixel *pixPtr = new AliMUONPixel (xc, yc, wx, wy, cont);
2443 fPixArray->Add((TObject*)pixPtr);
2444 used[(ic-1)*nx+jc-1] = kTRUE;
2445 AddBin(hist, ic, jc, 1, used, (TObjArray*)0); // recursive call
2446
2447 Int_t nPix = fPixArray->GetEntriesFast(), npad = fnPads[0] + fnPads[1];
2448 for (Int_t i=0; i<nPix; i++) {
2449 ((AliMUONPixel*)fPixArray->UncheckedAt(i))->SetSize(0,wx);
2450 ((AliMUONPixel*)fPixArray->UncheckedAt(i))->SetSize(1,wy);
2451 }
2b1e4f0e 2452 if (fDebug) cout << iMax << " " << nPix << endl;
0df3ca52 2453
2454 Float_t xy[4], xy12[4];
2455 // Pick up pads which overlap with found pixels
2456 for (Int_t i=0; i<npad; i++) fPadIJ[1][i] = -1;
2457 for (Int_t i=0; i<nPix; i++) {
2458 pixPtr = (AliMUONPixel*) fPixArray->UncheckedAt(i);
2459 for (Int_t j=0; j<4; j++)
2460 xy[j] = pixPtr->Coord(j/2) + (j%2 ? 1 : -1)*pixPtr->Size(j/2);
2461 for (Int_t j=0; j<npad; j++)
2462 if (Overlap(xy, j, xy12, 0)) fPadIJ[1][j] = 0; // flag for use
2463 }
2464
2465 delete [] used; used = 0;
2466}
30178c30 2467
2468//_____________________________________________________________________________
2469AliMUONClusterFinderAZ&
2470AliMUONClusterFinderAZ::operator=(const AliMUONClusterFinderAZ& rhs)
2471{
2472// Protected assignement operator
2473
2474 if (this == &rhs) return *this;
2475
8c343c7c 2476 AliFatal("Not implemented.");
30178c30 2477
2478 return *this;
2479}
2480
2b1e4f0e 2481//_____________________________________________________________________________
2482void AliMUONClusterFinderAZ::AddVirtualPad()
2483{
2484 // Add virtual pad (with small charge) to improve fit for some
2485 // clusters (when pad with max charge is at the extreme of the cluster)
2486
2487 // Get number of pads in X and Y-directions
2488 Int_t nInX = -1, nInY;
2489 PadsInXandY(nInX, nInY);
2490 //return;
2491
0627f609 2492 // Add virtual pad only if number of pads per direction == 2
2b1e4f0e 2493 if (nInX != 2 && nInY != 2) return;
2494
2495 // Find pads with max charge
2496 Int_t maxpad[2][2] = {{-1, -1}, {-1, -1}}, cath;
2497 Double_t sigmax[2] = {0}, aamax[2] = {0};
2498 for (Int_t j=0; j<fnPads[0]+fnPads[1]; j++) {
2499 if (fPadIJ[1][j] != 0) continue;
2500 cath = fPadIJ[0][j];
2501 if (fXyq[2][j] > sigmax[cath]) {
2502 maxpad[cath][1] = maxpad[cath][0];
2503 aamax[cath] = sigmax[cath];
2504 sigmax[cath] = fXyq[2][j];
2505 maxpad[cath][0] = j;
2506 }
2507 }
2508 if (maxpad[0][0] >= 0 && maxpad[0][1] < 0 || maxpad[1][0] >= 0 && maxpad[1][1] < 0) {
2509 for (Int_t j=0; j<fnPads[0]+fnPads[1]; j++) {
2510 if (fPadIJ[1][j] != 0) continue;
2511 cath = fPadIJ[0][j];
2512 if (j == maxpad[cath][0] || j == maxpad[cath][1]) continue;
2513 if (fXyq[2][j] > aamax[cath]) {
2514 aamax[cath] = fXyq[2][j];
2515 maxpad[cath][1] = j;
2516 }
2517 }
2518 }
2519 // Check for mirrors (side X on cathode 0)
2520 Bool_t mirror = kFALSE;
0627f609 2521 if (maxpad[0][0] >= 0 && maxpad[1][0] >= 0) {
2b1e4f0e 2522 mirror = fXyq[3][maxpad[0][0]] < fXyq[4][maxpad[0][0]];
0627f609 2523 if (!mirror && TMath::Abs(fXyq[3][maxpad[0][0]]-fXyq[3][maxpad[1][0]]) < 0.001) {
2524 // Special case when pads on both cathodes have the same size
2525 Int_t yud[2] = {0};
2526 for (Int_t j = 0; j < fnPads[0]+fnPads[1]; j++) {
2527 cath = fPadIJ[0][j];
2528 if (j == maxpad[cath][0]) continue;
2529 if (fPadIJ[2][j] != fPadIJ[2][maxpad[cath][0]]) continue;
2530 if (fPadIJ[3][j] + 1 == fPadIJ[3][maxpad[cath][0]] ||
2531 fPadIJ[3][j] - 1 == fPadIJ[3][maxpad[cath][0]]) yud[cath]++;
2532 }
2533 if (!yud[0]) mirror = kTRUE; // take the other cathode
2534 } // if (!mirror &&...
2535 } // if (maxpad[0][0] >= 0 && maxpad[1][0] >= 0)
2b1e4f0e 2536
2537 // Find neughbours of pads with max charges
2538 Int_t nn, xList[10], yList[10], ix0, iy0, ix, iy, neighb;
2539 for (cath=0; cath<2; cath++) {
2540 if (!cath && maxpad[0][0] < 0) continue; // one-sided cluster - cathode 1
2541 if (cath && maxpad[1][0] < 0) break; // one-sided cluster - cathode 0
2542 if (maxpad[1][0] >= 0) {
2543 if (!mirror) {
2544 if (!cath && nInY != 2) continue;
2b1e4f0e 2545 if (cath && nInX != 2 && (maxpad[0][0] >= 0 || nInY != 2)) continue;
2546 } else {
2547 if (!cath && nInX != 2) continue;
2548 if (cath && nInY != 2 && (maxpad[0][0] >= 0 || nInX != 2)) continue;
2549 }
2550 }
2551
1af223d7 2552 Int_t iAddX = 0, iAddY = 0, ix1 = 0, iy1 = 0, iPad = 0;
2b1e4f0e 2553 if (maxpad[0][0] < 0) iPad = 1;
2554
2b1e4f0e 2555 for (iPad=0; iPad<2; iPad++) {
94eb555e 2556 if (maxpad[cath][iPad] < 0) continue;
2b1e4f0e 2557 if (iPad && !iAddX && !iAddY) break;
2558 if (iPad && fXyq[2][maxpad[cath][1]] / sigmax[cath] < 0.5) break;
2559
2560 Int_t neighbx = 0, neighby = 0;
0627f609 2561 ix0 = fPadIJ[2][maxpad[cath][iPad]];
2562 iy0 = fPadIJ[3][maxpad[cath][iPad]];
2563 fSegmentation[cath]->Neighbours(ix0, iy0, &nn, xList, yList);
2564 Float_t zpad;
2b1e4f0e 2565 for (Int_t j=0; j<nn; j++) {
0627f609 2566 if (TMath::Abs(xList[j]-ix0) == 1 || xList[j]*ix0 == -1) neighbx++;
2567 if (TMath::Abs(yList[j]-iy0) == 1 || yList[j]*iy0 == -1) neighby++;
2b1e4f0e 2568 }
2569 if (!mirror) {
2570 if (cath) neighb = neighbx;
2571 else neighb = neighby;
2572 if (maxpad[0][0] < 0) neighb += neighby;
2573 else if (maxpad[1][0] < 0) neighb += neighbx;
2574 } else {
2575 if (!cath) neighb = neighbx;
2576 else neighb = neighby;
2577 if (maxpad[0][0] < 0) neighb += neighbx;
2578 else if (maxpad[1][0] < 0) neighb += neighby;
2579 }
2580
2581 for (Int_t j=0; j<fnPads[0]+fnPads[1]; j++) {
2582 if (fPadIJ[0][j] != cath) continue;
0627f609 2583 ix = fPadIJ[2][j];
2584 iy = fPadIJ[3][j];
2b1e4f0e 2585 if (iy == iy0 && ix == ix0) continue;
2586 for (Int_t k=0; k<nn; k++) {
2587 if (xList[k] != ix || yList[k] != iy) continue;
2588 if (!mirror) {
2589 if ((!cath || maxpad[0][0] < 0) &&
1af223d7 2590 (TMath::Abs(iy-iy0) == 1 || iy*iy0 == -1)) {
0627f609 2591 if (!iPad && TMath::Abs(ix-ix0) == 1 || ix*ix0 == -1) ix1 = xList[k]; //19-12-05
2b1e4f0e 2592 xList[k] = yList[k] = 0;
2593 neighb--;
2594 break;
2595 }
2596 if ((cath || maxpad[1][0] < 0) &&
1af223d7 2597 (TMath::Abs(ix-ix0) == 1 || ix*ix0 == -1)) {
0627f609 2598 if (!iPad) ix1 = xList[k]; //19-12-05
2b1e4f0e 2599 xList[k] = yList[k] = 0;
2600 neighb--;
2601 }
2602 } else {
2603 if ((!cath || maxpad[0][0] < 0) &&
1af223d7 2604 (TMath::Abs(ix-ix0) == 1 || ix*ix0 == -1)) {
0627f609 2605 if (!iPad) ix1 = xList[k]; //19-12-05
2b1e4f0e 2606 xList[k] = yList[k] = 0;
2607 neighb--;
2608 break;
2609 }
2610 if ((cath || maxpad[1][0] < 0) &&
1af223d7 2611 (TMath::Abs(iy-iy0) == 1 || iy*iy0 == -1)) {
2b1e4f0e 2612 xList[k] = yList[k] = 0;
2613 neighb--;
2614 }
2615 }
2616 break;
2617 } // for (Int_t k=0; k<nn;
2618 if (!neighb) break;
2619 } // for (Int_t j=0; j<fnPads[0]+fnPads[1];
2620 if (!neighb) continue;
2621
2622 // Add virtual pad
2623 Int_t npads, isec;
2624 isec = 0;
2625 for (Int_t j=0; j<nn; j++) {
2626 if (xList[j] == 0 && yList[j] == 0) continue;
2627 npads = fnPads[0] + fnPads[1];
2628 fPadIJ[0][npads] = cath;
2629 fPadIJ[1][npads] = 0;
2630 ix = xList[j];
2631 iy = yList[j];
1af223d7 2632 if (TMath::Abs(ix-ix0) == 1 || ix*ix0 == -1) {
2b1e4f0e 2633 if (iy != iy0) continue; // new segmentation - check
2634 if (nInX != 2) continue; // new
2635 if (!mirror) {
2636 if (!cath && maxpad[1][0] >= 0) continue;
2b1e4f0e 2637 } else {
2638 if (cath && maxpad[0][0] >= 0) continue;
2b1e4f0e 2639 }
2640 if (iPad && !iAddX) continue;
0627f609 2641 fSegmentation[cath]->GetPadC(ix, iy, fXyq[0][npads], fXyq[1][npads], zpad);
1af223d7 2642 if (fXyq[0][npads] > 1.e+5) continue; // temporary fix
0627f609 2643 if (ix == ix1) continue; //19-12-05
2b1e4f0e 2644 if (ix1 == ix0) continue;
2b1e4f0e 2645 if (maxpad[1][0] < 0 || mirror && maxpad[0][0] >= 0) {
2646 if (!iPad) fXyq[2][npads] = TMath::Min (sigmax[0]/100, 5.);
2647 else fXyq[2][npads] = TMath::Min (aamax[0]/100, 5.);
2648 }
2649 else {
2650 if (!iPad) fXyq[2][npads] = TMath::Min (sigmax[1]/100, 5.);
2651 else fXyq[2][npads] = TMath::Min (aamax[1]/100, 5.);
2652 }
2653 fXyq[2][npads] = TMath::Max (fXyq[2][npads], (float)1);
2b1e4f0e 2654 fXyq[3][npads] = -2; // flag
0627f609 2655 fPadIJ[2][npads] = ix;
2656 fPadIJ[3][npads] = iy;
2b1e4f0e 2657 fnPads[1]++;
2658 iAddX = npads;
0627f609 2659 if (fDebug) printf(" ***** Add virtual pad in X ***** %f %f %f %3d %3d \n", fXyq[2][npads],
e8fb921b 2660 fXyq[0][npads], fXyq[1][npads], ix, iy);
2b1e4f0e 2661 ix1 = ix0;
2662 continue;
2663 }
2664 if (nInY != 2) continue;
2665 if (!mirror && cath && maxpad[0][0] >= 0) continue;
2666 if (mirror && !cath && maxpad[1][0] >= 0) continue;
2667 if (TMath::Abs(iy-iy0) == 1 || TMath::Abs(iy*iy0) == 1) {
2668 if (ix != ix0) continue; // new segmentation - check
2669 if (iPad && !iAddY) continue;
0627f609 2670 fSegmentation[cath]->GetPadC(ix, iy, fXyq[0][npads], fXyq[1][npads], zpad);
2b1e4f0e 2671 if (iy1 == iy0) continue;
2672 //if (iPad && iy1 == iy0) continue;
2b1e4f0e 2673 if (maxpad[0][0] < 0 || mirror && maxpad[1][0] >= 0) {
0627f609 2674 if (!iPad) fXyq[2][npads] = TMath::Min (sigmax[1]/15, fgkZeroSuppression);
2675 else fXyq[2][npads] = TMath::Min (aamax[1]/15, fgkZeroSuppression);
2b1e4f0e 2676 }
2677 else {
0627f609 2678 if (!iPad) fXyq[2][npads] = TMath::Min (sigmax[0]/15, fgkZeroSuppression);
2679 else fXyq[2][npads] = TMath::Min (aamax[0]/15, fgkZeroSuppression);
2b1e4f0e 2680 }
2681 fXyq[2][npads] = TMath::Max (fXyq[2][npads], (float)1);
2b1e4f0e 2682 fXyq[3][npads] = -2; // flag
0627f609 2683 fPadIJ[2][npads] = ix;
2684 fPadIJ[3][npads] = iy;
2b1e4f0e 2685 fnPads[1]++;
2686 iAddY = npads;
0627f609 2687 if (fDebug) printf(" ***** Add virtual pad in Y ***** %f %f %f %3d %3d \n", fXyq[2][npads],
e8fb921b 2688 fXyq[0][npads], fXyq[1][npads], ix, iy);
2b1e4f0e 2689 iy1 = iy0;
2690 }
2691 } // for (Int_t j=0; j<nn;
2692 } // for (Int_t iPad=0;
2693 } // for (cath=0; cath<2;
2694 return;
2695}
2696
2697//_____________________________________________________________________________
2698void AliMUONClusterFinderAZ::PadsInXandY(Int_t &nInX, Int_t &nInY)
2699{
2700 // Find number of pads in X and Y-directions (excluding virtual ones and
2701 // overflows)
2702
2703 static Int_t nXsaved = 0, nYsaved = 0;
2704 nXsaved = nYsaved = 0;
2705 //if (nInX >= 0) {nInX = nXsaved; nInY = nYsaved; return; }
5a051e34 2706 Float_t *xPad0 = NULL, *yPad0 = NULL, *xPad1 = NULL, *yPad1 = NULL;
1af223d7 2707 Float_t wMinX[2] = {99, 99}, wMinY[2] = {99, 99};
5a051e34 2708 Int_t *nPad0 = NULL, *nPad1 = NULL;
2709 Int_t nPads = fnPads[0] + fnPads[1];
2710 if (fnPads[0]) {
2711 xPad0 = new Float_t[nPads];
2712 yPad0 = new Float_t[nPads];
2713 nPad0 = new Int_t[nPads];
2714 }
2715 if (fnPads[1]) {
2716 xPad1 = new Float_t[nPads];
2717 yPad1 = new Float_t[nPads];
2718 nPad1 = new Int_t[nPads];
2719 }
2720 Int_t n0 = 0, n1 = 0, cath, npadx[2] = {1, 1}, npady[2] = {1, 1};
2721 for (Int_t j = 0; j < nPads; j++) {
2b1e4f0e 2722 if (nInX < 0 && fPadIJ[1][j] != 0) continue; // before fit
2723 else if (nInX == 0 && fPadIJ[1][j] != 1) continue; // fit - exclude overflows
2724 else if (nInX > 0 && fPadIJ[1][j] != 1 && fPadIJ[1][j] != -9) continue; // exclude non-marked
0627f609 2725 if (nInX <= 0 && fXyq[2][j] > fgkSaturation-1) continue; // skip overflows
2b1e4f0e 2726 cath = fPadIJ[0][j];
1af223d7 2727 if (fXyq[3][j] > 0) { // exclude virtual pads
2728 wMinX[cath] = TMath::Min (wMinX[cath], fXyq[3][j]);
2729 wMinY[cath] = TMath::Min (wMinY[cath], fXyq[4][j]);
0627f609 2730 //20-12-05 }
2731 if (cath) { xPad1[n1] = fXyq[0][j]; yPad1[n1++] = fXyq[1][j]; }
2732 else { xPad0[n0] = fXyq[0][j]; yPad0[n0++] = fXyq[1][j]; }
1af223d7 2733 }
2b1e4f0e 2734 }
5a051e34 2735
2736 // Sort
2737 if (n0) {
2738 TMath::Sort (n0, xPad0, nPad0); // in X
2739 for (Int_t i = 1; i < n0; i++)
2740 if (xPad0[nPad0[i]] - xPad0[nPad0[i-1]] < -0.01) npadx[0]++;
2741 TMath::Sort (n0, yPad0, nPad0); // in Y
2742 for (Int_t i = 1; i < n0; i++)
2743 if (yPad0[nPad0[i]] - yPad0[nPad0[i-1]] < -0.01) npady[0]++;
2744 }
2745
2746 if (n1) {
2747 TMath::Sort (n1, xPad1, nPad1); // in X
2748 for (Int_t i = 1; i < n1; i++)
2749 if (xPad1[nPad1[i]] - xPad1[nPad1[i-1]] < -0.01) npadx[1]++;
2750 TMath::Sort (n1, yPad1, nPad1); // in Y
2751 for (Int_t i = 1; i < n1; i++)
2752 if (yPad1[nPad1[i]] - yPad1[nPad1[i-1]] < -0.01) npady[1]++;
2753 }
2754 if (fnPads[0]) { delete [] xPad0; delete [] yPad0; delete [] nPad0; }
2755 if (fnPads[1]) { delete [] xPad1; delete [] yPad1; delete [] nPad1; }
cc87ebcd 2756 if (TMath::Abs (wMinY[0] - wMinY[1]) < 1.e-3) nInY = TMath::Max (npady[0], npady[1]);
2757 else nInY = wMinY[0] < wMinY[1] ? npady[0] : npady[1];
2758 if (TMath::Abs (wMinX[0] - wMinX[1]) < 1.e-3) nInX = TMath::Max (npadx[0], npadx[1]);
2759 else nInX = wMinX[0] < wMinX[1] ? npadx[0] : npadx[1];
2b1e4f0e 2760}
2761
2762//_____________________________________________________________________________
2763void AliMUONClusterFinderAZ::Simple()
2764{
2765 // Process simple cluster (small number of pads) without EM-procedure
2766
ff7af159 2767 Int_t nForFit = 1, clustFit[1] = {0}, nfit;
2b1e4f0e 2768 Double_t parOk[3] = {0.};
2769 TObjArray *clusters[1];
ff7af159 2770 clusters[0] = fPixArray;
5a051e34 2771 for (Int_t i = 0; i < fnPads[0]+fnPads[1]; i++) {
0627f609 2772 if (fXyq[2][i] > fgkSaturation-1) fPadIJ[1][i] = -9;
5a051e34 2773 else fPadIJ[1][i] = 1;
2774 }
0627f609 2775 nfit = Fit(1, nForFit, clustFit, clusters, parOk);
2b1e4f0e 2776}
2777
2778//_____________________________________________________________________________
2779void AliMUONClusterFinderAZ::Errors(AliMUONRawCluster *clus)
2780{
2781 // Correct reconstructed coordinates for some clusters and evaluate errors
2782
2783 Double_t qTot = clus->GetCharge(0), fmin = clus->GetChi2(0);
2784 Double_t xreco = clus->GetX(0), yreco = clus->GetY(0), zreco = clus->GetZ(0);
2785 Double_t sigmax[2] = {0};
2786
2787 Int_t nInX = 1, nInY, maxdig[2] ={-1, -1}, digit, cath1, isec;
2788 PadsInXandY(nInX, nInY);
2789
2790 // Find pad with maximum signal
2791 for (Int_t cath = 0; cath < 2; cath++) {
2792 for (Int_t j = 0; j < clus->GetMultiplicity(cath); j++) {
2793 cath1 = cath;
2794 digit = clus->GetIndex(j, cath);
2795 if (digit < 0) { cath1 = TMath::Even(cath); digit = -digit - 1; } // from the other cathode
2796
2797 if (clus->GetContrib(j,cath) > sigmax[cath1]) {
2798 sigmax[cath1] = clus->GetContrib(j,cath);
2799 maxdig[cath1] = digit;
2800 }
2801 }
2802 }
2803
2804 // Size of pad with maximum signal and reco coordinate distance from the pad center
2805 AliMUONDigit *mdig = 0;
2806 Double_t wx[2], wy[2], dxc[2], dyc[2];
2807 Float_t xpad, ypad, zpad;
2808 Int_t ix, iy;
2809 for (Int_t cath = 0; cath < 2; cath++) {
2810 if (maxdig[cath] < 0) continue;
2811 mdig = fInput->Digit(cath,maxdig[cath]);
0627f609 2812 isec = fSegmentation[cath]->Sector(mdig->PadX(), mdig->PadY());
2813 wx[cath] = fSegmentation[cath]->Dpx(isec);
2814 wy[cath] = fSegmentation[cath]->Dpy(isec);
2815 fSegmentation[cath]->GetPadI(xreco, yreco, zreco, ix, iy);
2816 isec = fSegmentation[cath]->Sector(ix, iy);
2b1e4f0e 2817 if (isec > 0) {
0627f609 2818 fSegmentation[cath]->GetPadC(ix, iy, xpad, ypad, zpad);
2b1e4f0e 2819 dxc[cath] = xreco - xpad;
2820 dyc[cath] = yreco - ypad;
2821 }
2822 }
2823
2824 // Check if pad with max charge at the edge (number of neughbours)
2825 Int_t nn, xList[10], yList[10], neighbx[2][2] = {{0,0}, {0,0}}, neighby[2][2]= {{0,0}, {0,0}};
2826 for (Int_t cath = 0; cath < 2; cath++) {
2827 if (maxdig[cath] < 0) continue;
2828 mdig = fInput->Digit(cath,maxdig[cath]);
0627f609 2829 fSegmentation[cath]->Neighbours(mdig->PadX(), mdig->PadY(), &nn, xList, yList);
2830 isec = fSegmentation[cath]->Sector(mdig->PadX(), mdig->PadY());
2831 /*??
f29ba3e1 2832 Float_t sprX = fResponse->SigmaIntegration() * fResponse->ChargeSpreadX();
2833 Float_t sprY = fResponse->SigmaIntegration() * fResponse->ChargeSpreadY();
2834 //fSegmentation[cath]->FirstPad(fInput->DetElemId(),muons[ihit][1], muons[ihit][2], muons[ihit][3], sprX, sprY);
0627f609 2835 //fSegmentation[cath]->FirstPad(fInput->DetElemId(),xreco, yreco, zreco, sprX, sprY);
2836 fSegmentation[cath]->FirstPad(xreco, yreco, zreco, sprX, sprY);
2b1e4f0e 2837 Int_t border = 0;
0627f609 2838 //if (fSegmentation[cath]->Sector(fInput->DetElemId(),fSegmentation[cath]->Ix(),fSegmentation[cath]->Iy()) <= 0) {
2839 if (fSegmentation[cath]->Sector(fSegmentation[cath]->Ix(), fSegmentation[cath]->Iy()) <= 0) {
2840 //fSegmentation[cath]->NextPad(fInput->DetElemId());
2841 fSegmentation[cath]->NextPad();
2b1e4f0e 2842 border = 1;
2843 }
0627f609 2844 */
2b1e4f0e 2845 for (Int_t j=0; j<nn; j++) {
0627f609 2846 //if (border && yList[j] < fSegmentation[cath]->Iy()) continue;
2847 fSegmentation[cath]->GetPadC(xList[j], yList[j], xpad, ypad, zpad);
2b1e4f0e 2848 //cout << ch << " " << xList[j] << " " << yList[j] << " " << border << " " << x << " " << y << " " << xpad << " " << ypad << endl;
2849 if (TMath::Abs(xpad) < 1 && TMath::Abs(ypad) < 1) continue;
2850 if (xList[j] == mdig->PadX()-1 || mdig->PadX() == 1 &&
2851 xList[j] == -1) neighbx[cath][0] = 1;
2852 else if (xList[j] == mdig->PadX()+1 || mdig->PadX() == -1 &&
2853 xList[j] == 1) neighbx[cath][1] = 1;
2854 if (yList[j] == mdig->PadY()-1 || mdig->PadY() == 1 &&
2855 yList[j] == -1) neighby[cath][0] = 1;
2856 else if (yList[j] == mdig->PadY()+1 || mdig->PadY() == -1 &&
2857 yList[j] == 1) neighby[cath][1] = 1;
2858 } // for (Int_t j=0; j<nn;
2859 if (neighbx[cath][0] && neighbx[cath][1]) neighbx[cath][0] = 0;
2860 else if (neighbx[cath][1]) neighbx[cath][0] = -1;
2861 else neighbx[cath][0] = 1;
2862 if (neighby[cath][0] && neighby[cath][1]) neighby[cath][0] = 0;
2863 else if (neighby[cath][1]) neighby[cath][0] = -1;
2864 else neighby[cath][0] = 1;
2865 }
2866
2867 Int_t iOver = clus->GetClusterType();
2868 // One-sided cluster
2869 if (!clus->GetMultiplicity(0)) {
2870 neighby[0][0] = neighby[1][0];
2871 wy[0] = wy[1];
2872 if (iOver < 99) iOver += 100 * iOver;
2873 dyc[0] = dyc[1];
2874 } else if (!clus->GetMultiplicity(1)) {
2875 neighbx[1][0] = neighbx[0][0];
2876 wx[1] = wx[0];
2877 if (iOver < 99) iOver += 100 * iOver;
2878 dxc[1] = dxc[0];
2879 }
2880
2881 // Apply corrections and evaluate errors
2882 Double_t errY, errX;
2883 Errors(nInY, nInX, neighby[0][0],neighbx[1][0], fmin, wy[0]*10, wx[1]*10, iOver,
2884 dyc[0], dxc[1], qTot, yreco, xreco, errY, errX);
2885 errY = TMath::Max (errY, 0.01);
2886 //errY = 0.01;
2887 //errX = TMath::Max (errX, 0.144);
2888 clus->SetX(0, xreco); clus->SetY(0, yreco);
1af223d7 2889 clus->SetErrX(errX); clus->SetErrY(errY);
2b1e4f0e 2890}
2891
2892//_____________________________________________________________________________
2893void AliMUONClusterFinderAZ::Errors(Int_t ny, Int_t nx, Int_t iby, Int_t ibx, Double_t fmin,
2894 Double_t wy, Double_t wx, Int_t iover,
2895 Double_t dyc, Double_t /*dxc*/, Double_t qtot,
2896 Double_t &yrec, Double_t &xrec, Double_t &erry, Double_t &errx)
2897{
2898 // Correct reconstructed coordinates for some clusters and evaluate errors
2899
2900 erry = 0.01;
2901 errx = 0.144;
2902 Int_t iovery = iover % 100;
2903 Double_t corr = 0;
2904
2905/* ---> Ny = 1 */
2906 if (ny == 1) {
2907 if (iby != 0) {
2908 // edge effect
2909 yrec += iby * (0.1823+0.2008)/2;
2910 erry = 0.04587;
2911 } else {
2912 // Find "effective pad width"
2913 Double_t width = 0.218 / (1.31e-4 * TMath::Exp (2.688 * TMath::Log(qtot)) + 1) * 2;
2914 width = TMath::Min (width, 0.4);
2915 erry = width / TMath::Sqrt(12.);
2916 erry = TMath::Max (erry, 0.01293);
2917 }
2918 goto x; //return;
2919 }
2920
2921/* ---> "Bad" fit */
2922 if (fmin > 0.4) {
2923 erry = 0.1556;
2924 if (ny == 5) erry = 0.06481;
2925 goto x; //return;
2926 }
2927
2928/* ---> By != 0 */
2929 if (iby != 0) {
2930 if (ny > 2) {
2931 erry = 0.00417; //0.01010
2932 } else {
2933 // ny = 2
2934 if (dyc * iby > -0.05) {
2935 Double_t dyc2 = dyc * dyc;
2936 if (iby < 0) {
2937 corr = 0.019 - 0.602 * dyc + 8.739 * dyc2 - 44.209 * dyc2 * dyc;
2938 corr = TMath::Min (corr, TMath::Abs(-0.25-dyc));
2939 yrec -= corr;
2940 //dyc -= corr;
2941 erry = 0.00814;
2942 } else {
2943 corr = 0.006 + 0.300 * dyc + 6.147 * dyc2 + 42.039 * dyc2 * dyc;
2944 corr = TMath::Min (corr, 0.25-dyc);
2945 yrec += corr;
2946 //dyc += corr;
2947 erry = 0.01582;
2948 }
2949 } else {
2950 erry = (0.00303 + 0.00296) / 2;
2951 }
2952 }
2953 goto x; //return;
2954 }
2955
2956/* ---> Overflows */
2957 if (iovery != 0) {
2958 if (qtot < 3000) {
2959 erry = 0.0671;
2960 } else {
2961 if (iovery > 1) {
2962 erry = 0.09214;
2963 } else if (TMath::Abs(wy - 5) < 0.1) {
2964 erry = 0.061; //0.06622
2965 } else {
2966 erry = 0.00812; // 0.01073
2967 }
2968 }
2969 goto x; //return;
2970 }
2971
2972/* ---> "Good" but very high signal */
2973 if (qtot > 4000) {
2974 if (TMath::Abs(wy - 4) < 0.1) {
2975 erry = 0.00117;
2976 } else if (fmin < 0.03 && qtot < 6000) {
2977 erry = 0.01003;
2978 } else {
2979 erry = 0.1931;
2980 }
2981 goto x; //return;
2982 }
2983
2984/* ---> "Good" clusters */
2985 if (ny > 3) {
2986 if (TMath::Abs(wy - 5) < 0.1) {
2987 erry = 0.0011; //0.00304
2988 } else if (qtot < 400.) {
2989 erry = 0.0165;
2990 } else {
2991 erry = 0.00135; // 0.00358
2992 }
2993 } else if (ny == 3) {
2994 if (TMath::Abs(wy - 4) < 0.1) {
2995 erry = 35.407 / (1 + TMath::Exp(5.511*TMath::Log(qtot/265.51))) + 11.564;
2996 //erry = 83.512 / (1 + TMath::Exp(3.344*TMath::Log(qtot/211.58))) + 12.260;
2997 } else {
2998 erry = 147.03 / (1 + TMath::Exp(1.713*TMath::Log(qtot/73.151))) + 9.575;
2999 //erry = 91.743 / (1 + TMath::Exp(2.332*TMath::Log(qtot/151.67))) + 11.453;
3000 }
3001 erry *= 1.e-4;
3002 } else {
3003 // ny = 2
3004 if (TMath::Abs(wy - 4) < 0.1) {
3005 erry = 60.800 / (1 + TMath::Exp(3.305*TMath::Log(qtot/104.53))) + 11.702;
3006 //erry = 73.128 / (1 + TMath::Exp(5.676*TMath::Log(qtot/120.93))) + 17.839;
3007 } else {
3008 erry = 117.98 / (1 + TMath::Exp(2.005*TMath::Log(qtot/37.649))) + 21.431;
3009 //erry = 99.066 / (1 + TMath::Exp(4.900*TMath::Log(qtot/107.57))) + 25.315;
3010 }
3011 erry *= 1.e-4;
3012 }
3013 //return;
3014
3015 x:
3016/* ---> X-coordinate */
3017/* ---> Y-side */
3018 if (wx > 11) {
3019 errx = 0.0036;
3020 xrec -= 0.1385;
3021 return;
3022 }
3023/* ---> Nx = 1 */
3024 if (nx == 1) {
3025 if (TMath::Abs(wx - 6) < 0.1) {
3026 if (qtot < 40) errx = 0.1693;
3027 else errx = 0.06241;
3028 } else if (TMath::Abs(wx - 7.5) < 0.1) {
3029 if (qtot < 40) errx = 0.2173;
3030 else errx = 0.07703;
3031 } else if (TMath::Abs(wx - 10) < 0.1) {
3032 if (ibx == 0) {
3033 if (qtot < 40) errx = 0.2316;
3034 else errx = 0.1426;
3035 } else {
3036 xrec += (0.2115 + 0.1942) / 2 * ibx;
3037 errx = 0.1921;
3038 }
3039 }
3040 return;
3041 }
3042/* ---> "Bad" fit */
3043 if (fmin > 0.5) {
3044 errx = 0.1591;
3045 return;
3046 }
3047/* ---> Bx != 0 */
3048 if (ibx != 0) {
3049 if (ibx > 0) { errx = 0.06761; xrec -= 0.03832; }
3050 else { errx = 0.06653; xrec += 0.02581; }
3051 return;
3052 }
3053/* ---> Overflows */
3054 if (iover != 0) {
3055 if (TMath::Abs(wx - 6) < 0.1) errx = 0.06979;
3056 else if (TMath::Abs(wx - 7.5) < 0.1) errx = 0.1089;
3057 else if (TMath::Abs(wx - 10) < 0.1) errx = 0.09847;
3058 return;
3059 }
3060/* ---> Good */
3061 if (TMath::Abs(wx - 6) < 0.1) errx = 0.06022;
3062 else if (TMath::Abs(wx - 7.5) < 0.1) errx = 0.07247;
3063 else if (TMath::Abs(wx - 10) < 0.1) errx = 0.07359;
3064}
3065