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d15a28e7 | 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 | ||
b2a60966 | 16 | /* $Id$ */ |
17 | ||
d72dfbc3 | 18 | /* $Log: |
19 | 1 October 2000. Yuri Kharlov: | |
20 | AreNeighbours() | |
21 | PPSD upper layer is considered if number of layers>1 | |
22 | ||
23 | 18 October 2000. Yuri Kharlov: | |
24 | AliPHOSClusterizerv1() | |
25 | CPV clusterizing parameters added | |
26 | ||
27 | MakeClusters() | |
28 | After first PPSD digit remove EMC digits only once | |
29 | */ | |
30 | ||
d15a28e7 | 31 | //_________________________________________________________________________ |
b2a60966 | 32 | // Implementation version 1 of the clusterization algorithm |
33 | // | |
34 | //*-- Author: Yves Schutz (SUBATECH) | |
d15a28e7 | 35 | ////////////////////////////////////////////////////////////////////////////// |
36 | ||
ed4205d8 | 37 | #include <assert.h> |
38 | ||
d15a28e7 | 39 | // --- ROOT system --- |
40 | ||
41 | #include "TMath.h" | |
42 | ||
43 | // --- Standard library --- | |
44 | ||
de9ec31b | 45 | #include <iostream.h> |
d15a28e7 | 46 | |
47 | // --- AliRoot header files --- | |
48 | ||
49 | #include "AliPHOSClusterizerv1.h" | |
50 | #include "AliPHOSDigit.h" | |
51 | #include "AliPHOSEmcRecPoint.h" | |
52 | #include "AliPHOSPpsdRecPoint.h" | |
0b06c60d | 53 | #include "AliPHOSCpvRecPoint.h" |
d15a28e7 | 54 | #include "AliPHOSv0.h" |
55 | #include "AliRun.h" | |
56 | ||
57 | ClassImp(AliPHOSClusterizerv1) | |
58 | ||
59 | //____________________________________________________________________________ | |
60 | AliPHOSClusterizerv1::AliPHOSClusterizerv1() | |
61 | { | |
b2a60966 | 62 | // default ctor (to be used) |
63 | ||
d15a28e7 | 64 | fA = 0.; |
c3c187e5 | 65 | fB = 0.0000001 ; |
6b9b768e | 66 | fGeom = AliPHOSGeometry::GetInstance(); |
d15a28e7 | 67 | fNumberOfEmcClusters = 0 ; |
68 | fNumberOfPpsdClusters = 0 ; | |
c3c187e5 | 69 | fEmcClusteringThreshold = 0.2; |
70 | fEmcEnergyThreshold = 0.05; | |
71 | fPpsdClusteringThreshold = 0.0000002 ; | |
72 | fPpsdEnergyThreshold = 0.0000002 ; | |
ed4205d8 | 73 | fCpvClusteringThreshold = 0.0; |
c3c187e5 | 74 | fCpvEnergyThreshold = 0.09; |
d15a28e7 | 75 | fW0 = 4.5 ; |
c3c187e5 | 76 | fLocMaxCut = 0.03 ; |
77 | fW0CPV = 4.0 ; | |
78 | fLocMaxCutCPV = 0.03 ; | |
79 | ||
d15a28e7 | 80 | } |
81 | ||
82 | //____________________________________________________________________________ | |
83 | Int_t AliPHOSClusterizerv1::AreNeighbours(AliPHOSDigit * d1, AliPHOSDigit * d2) | |
84 | { | |
b2a60966 | 85 | // Gives the neighbourness of two digits = 0 are not neighbour but continue searching |
86 | // = 1 are neighbour | |
87 | // = 2 are not neighbour but do not continue searching | |
88 | // neighbours are defined as digits having at least common vertex | |
89 | // The order of d1 and d2 is important: first (d1) should be a digit already in a cluster | |
90 | // which is compared to a digit (d2) not yet in a cluster | |
91 | ||
d15a28e7 | 92 | Int_t rv = 0 ; |
93 | ||
d15a28e7 | 94 | Int_t relid1[4] ; |
6b9b768e | 95 | fGeom->AbsToRelNumbering(d1->GetId(), relid1) ; |
d15a28e7 | 96 | |
97 | Int_t relid2[4] ; | |
6b9b768e | 98 | fGeom->AbsToRelNumbering(d2->GetId(), relid2) ; |
d15a28e7 | 99 | |
100 | if ( (relid1[0] == relid2[0]) && (relid1[1]==relid2[1]) ) { // inside the same PHOS module and the same PPSD Module | |
92862013 | 101 | Int_t rowdiff = TMath::Abs( relid1[2] - relid2[2] ) ; |
102 | Int_t coldiff = TMath::Abs( relid1[3] - relid2[3] ) ; | |
d15a28e7 | 103 | |
92862013 | 104 | if (( coldiff <= 1 ) && ( rowdiff <= 1 )){ |
d15a28e7 | 105 | rv = 1 ; |
106 | } | |
107 | else { | |
108 | if((relid2[2] > relid1[2]) && (relid2[3] > relid1[3]+1)) | |
109 | rv = 2; // Difference in row numbers is too large to look further | |
110 | } | |
111 | ||
112 | } | |
113 | else { | |
114 | ||
115 | if( (relid1[0] < relid2[0]) || (relid1[1] < relid2[1]) ) | |
116 | rv=2 ; | |
117 | ||
118 | } | |
d72dfbc3 | 119 | |
120 | //Do NOT clusterize upper PPSD | |
ed4205d8 | 121 | if( IsInPpsd(d1) && IsInPpsd(d2) && |
122 | relid1[1] > 0 && | |
d72dfbc3 | 123 | relid1[1] < fGeom->GetNumberOfPadsPhi()*fGeom->GetNumberOfPadsPhi() ) rv = 2 ; |
124 | ||
d15a28e7 | 125 | return rv ; |
126 | } | |
127 | ||
128 | //____________________________________________________________________________ | |
129 | void AliPHOSClusterizerv1::FillandSort(const DigitsList * dl, TObjArray * tl) | |
130 | { | |
b2a60966 | 131 | // Copies the digits with energy above thershold and sorts the list |
d15a28e7 | 132 | // according to increasing Id number |
133 | ||
d15a28e7 | 134 | TIter next(dl) ; |
135 | AliPHOSDigit * digit ; | |
136 | ||
137 | while ( (digit = (AliPHOSDigit *)next()) ) { | |
d15a28e7 | 138 | Float_t ene = Calibrate(digit->GetAmp()) ; |
f2bc1b87 | 139 | if ( IsInEmc (digit) && ene > fEmcEnergyThreshold ) |
140 | tl->Add(digit) ; | |
141 | else if ( IsInPpsd (digit) && ene > fPpsdEnergyThreshold ) | |
142 | tl->Add(digit) ; | |
143 | else if ( IsInCpv (digit) && ene > fCpvEnergyThreshold ) | |
144 | tl->Add(digit) ; | |
d15a28e7 | 145 | } |
146 | tl->Sort() ; | |
147 | } | |
148 | ||
149 | //____________________________________________________________________________ | |
150 | void AliPHOSClusterizerv1:: GetNumberOfClustersFound(Int_t * numb) | |
151 | { | |
b2a60966 | 152 | // Fills numb with the number of EMC (numb[0]) clusters found |
153 | // PPSD (numb[1]) clusters found | |
154 | ||
155 | numb[0] = fNumberOfEmcClusters ; | |
156 | numb[1] = fNumberOfPpsdClusters ; | |
d15a28e7 | 157 | } |
158 | ||
159 | //____________________________________________________________________________ | |
160 | Bool_t AliPHOSClusterizerv1::IsInEmc(AliPHOSDigit * digit) | |
161 | { | |
b2a60966 | 162 | // Tells if (true) or not (false) the digit is in a PHOS-EMC module |
163 | ||
9f616d61 | 164 | Bool_t rv = kFALSE ; |
d15a28e7 | 165 | |
d15a28e7 | 166 | Int_t relid[4] ; |
6b9b768e | 167 | fGeom->AbsToRelNumbering(digit->GetId(), relid) ; |
d15a28e7 | 168 | |
ed4205d8 | 169 | if ( relid[1] == 0 ) rv = kTRUE; |
170 | ||
171 | return rv ; | |
172 | } | |
173 | ||
174 | //____________________________________________________________________________ | |
175 | Bool_t AliPHOSClusterizerv1::IsInPpsd(AliPHOSDigit * digit) | |
176 | { | |
fad3e5b9 | 177 | // Tells if (true) or not (false) the digit is in a PHOS-PPSD module |
ed4205d8 | 178 | |
179 | Bool_t rv = kFALSE ; | |
180 | ||
181 | Int_t relid[4] ; | |
182 | fGeom->AbsToRelNumbering(digit->GetId(), relid) ; | |
183 | ||
184 | if ( relid[1] > 0 && relid[0] > fGeom->GetNCPVModules() ) rv = kTRUE; | |
185 | ||
186 | return rv ; | |
187 | } | |
188 | ||
189 | //____________________________________________________________________________ | |
190 | Bool_t AliPHOSClusterizerv1::IsInCpv(AliPHOSDigit * digit) | |
191 | { | |
fad3e5b9 | 192 | // Tells if (true) or not (false) the digit is in a PHOS-CPV module |
ed4205d8 | 193 | |
194 | Bool_t rv = kFALSE ; | |
195 | ||
196 | Int_t relid[4] ; | |
197 | fGeom->AbsToRelNumbering(digit->GetId(), relid) ; | |
198 | ||
199 | if ( relid[1] > 0 && relid[0] <= fGeom->GetNCPVModules() ) rv = kTRUE; | |
d15a28e7 | 200 | |
201 | return rv ; | |
202 | } | |
203 | ||
204 | //____________________________________________________________________________ | |
88714635 | 205 | void AliPHOSClusterizerv1::MakeClusters(const DigitsList * dl, |
206 | AliPHOSRecPoint::RecPointsList * emcl, | |
fad3e5b9 | 207 | AliPHOSRecPoint::RecPointsList * ppsdl) |
d15a28e7 | 208 | { |
b2a60966 | 209 | // Steering method to construct the clusters stored in a list of Reconstructed Points |
210 | // A cluster is defined as a list of neighbour digits | |
c161df70 | 211 | |
b73f246d | 212 | fNumberOfEmcClusters = 0 ; |
c161df70 | 213 | fNumberOfPpsdClusters = 0 ; |
b73f246d | 214 | fNumberOfCpvClusters = 0 ; |
c161df70 | 215 | |
d15a28e7 | 216 | // Fill and sort the working digits list |
92862013 | 217 | TObjArray tempodigitslist( dl->GetEntries() ) ; |
218 | FillandSort(dl, &tempodigitslist) ; | |
d15a28e7 | 219 | |
220 | // Clusterization starts | |
92862013 | 221 | TIter nextdigit(&tempodigitslist) ; |
d15a28e7 | 222 | AliPHOSDigit * digit ; |
92862013 | 223 | Bool_t notremoved = kTRUE ; |
6ad0bfa0 | 224 | |
d15a28e7 | 225 | while ( (digit = (AliPHOSDigit *)nextdigit()) ) { // scan over the list of digits |
226 | AliPHOSRecPoint * clu ; | |
c161df70 | 227 | |
83974468 | 228 | AliPHOSDigit ** clusterdigitslist = new AliPHOSDigit*[dl->GetEntries()] ; |
d15a28e7 | 229 | Int_t index ; |
f2bc1b87 | 230 | |
b73f246d | 231 | if (( IsInEmc (digit) && Calibrate(digit->GetAmp()) > fEmcClusteringThreshold ) || |
232 | ( IsInPpsd(digit) && Calibrate(digit->GetAmp()) > fPpsdClusteringThreshold ) || | |
233 | ( IsInCpv (digit) && Calibrate(digit->GetAmp()) > fCpvClusteringThreshold ) ) { | |
f2bc1b87 | 234 | |
d15a28e7 | 235 | Int_t iDigitInCluster = 0 ; |
236 | ||
6ad0bfa0 | 237 | if ( IsInEmc(digit) ) { |
83974468 | 238 | // start a new EMC RecPoint |
d72dfbc3 | 239 | if(fNumberOfEmcClusters >= emcl->GetSize()) emcl->Expand(2*fNumberOfEmcClusters+1) ; |
83974468 | 240 | (*emcl)[fNumberOfEmcClusters] = new AliPHOSEmcRecPoint(fW0, fLocMaxCut) ; |
6b9b768e | 241 | clu = (AliPHOSEmcRecPoint *) emcl->At(fNumberOfEmcClusters) ; |
9f616d61 | 242 | fNumberOfEmcClusters++ ; |
243 | clu->AddDigit(*digit, Calibrate(digit->GetAmp())) ; | |
83974468 | 244 | clusterdigitslist[iDigitInCluster] = digit ; |
9f616d61 | 245 | iDigitInCluster++ ; |
92862013 | 246 | tempodigitslist.Remove(digit) ; |
ca77b032 | 247 | |
d72dfbc3 | 248 | } else { |
83974468 | 249 | |
fad3e5b9 | 250 | // start a new PPSD/CPV cluster |
d72dfbc3 | 251 | if(fNumberOfPpsdClusters >= ppsdl->GetSize()) ppsdl->Expand(2*fNumberOfPpsdClusters+1); |
fad3e5b9 | 252 | if (IsInPpsd(digit)) |
d72dfbc3 | 253 | (*ppsdl)[fNumberOfPpsdClusters] = new AliPHOSPpsdRecPoint() ; |
fad3e5b9 | 254 | else |
255 | (*ppsdl)[fNumberOfPpsdClusters] = new AliPHOSCpvRecPoint(fW0CPV, fLocMaxCutCPV) ; | |
256 | clu = (AliPHOSPpsdRecPoint *) ppsdl->At(fNumberOfPpsdClusters) ; | |
257 | fNumberOfPpsdClusters++ ; | |
258 | ||
6ad0bfa0 | 259 | clu->AddDigit(*digit, Calibrate(digit->GetAmp()) ) ; |
83974468 | 260 | clusterdigitslist[iDigitInCluster] = digit ; |
9f616d61 | 261 | iDigitInCluster++ ; |
92862013 | 262 | tempodigitslist.Remove(digit) ; |
d15a28e7 | 263 | nextdigit.Reset() ; |
264 | ||
9f616d61 | 265 | // Here we remove resting EMC digits, which cannot make cluster |
fad3e5b9 | 266 | |
92862013 | 267 | if( notremoved ) { |
9f616d61 | 268 | while( ( digit = (AliPHOSDigit *)nextdigit() ) ) { |
9f616d61 | 269 | if( IsInEmc(digit) ) |
92862013 | 270 | tempodigitslist.Remove(digit) ; |
d15a28e7 | 271 | else |
272 | break ; | |
d72dfbc3 | 273 | } |
274 | notremoved = kFALSE ; | |
275 | } | |
d15a28e7 | 276 | |
277 | } // else | |
278 | ||
279 | nextdigit.Reset() ; | |
fad3e5b9 | 280 | |
d15a28e7 | 281 | AliPHOSDigit * digitN ; |
282 | index = 0 ; | |
9f616d61 | 283 | while (index < iDigitInCluster){ // scan over digits already in cluster |
83974468 | 284 | digit = clusterdigitslist[index] ; |
9f616d61 | 285 | index++ ; |
d15a28e7 | 286 | while ( (digitN = (AliPHOSDigit *)nextdigit()) ) { // scan over the reduced list of digits |
d72dfbc3 | 287 | Int_t ineb = AreNeighbours(digit, digitN); // call (digit,digitN) in THAT oder !!!!! |
d15a28e7 | 288 | switch (ineb ) { |
9f616d61 | 289 | case 0 : // not a neighbour |
d72dfbc3 | 290 | break ; |
9f616d61 | 291 | case 1 : // are neighbours |
83974468 | 292 | clu->AddDigit(*digitN, Calibrate( digitN->GetAmp() ) ) ; |
293 | clusterdigitslist[iDigitInCluster] = digitN ; | |
9f616d61 | 294 | iDigitInCluster++ ; |
92862013 | 295 | tempodigitslist.Remove(digitN) ; |
d15a28e7 | 296 | break ; |
9f616d61 | 297 | case 2 : // too far from each other |
d15a28e7 | 298 | goto endofloop; |
299 | } // switch | |
300 | ||
301 | } // while digitN | |
fad3e5b9 | 302 | |
d15a28e7 | 303 | endofloop: ; |
304 | nextdigit.Reset() ; | |
305 | ||
306 | } // loop over cluster | |
d72dfbc3 | 307 | } //below energy theshold |
308 | ||
31aa6d6c | 309 | delete[] clusterdigitslist ; |
310 | ||
d15a28e7 | 311 | } // while digit |
312 | ||
92862013 | 313 | tempodigitslist.Clear() ; |
83974468 | 314 | |
c161df70 | 315 | ppsdl->Sort() ; |
316 | Int_t index ; | |
317 | for(index = 0; index < ppsdl->GetEntries(); index++) | |
318 | ((AliPHOSPpsdRecPoint *)ppsdl->At(index))->SetIndexInList(index) ; | |
d15a28e7 | 319 | } |
320 | ||
321 | //____________________________________________________________________________ | |
322 | void AliPHOSClusterizerv1::PrintParameters() | |
323 | { | |
b2a60966 | 324 | // Print the energy thresholds |
325 | ||
d15a28e7 | 326 | cout << "PHOS Clusterizer version 1 :" << endl |
327 | << " EMC Clustering threshold = " << fEmcClusteringThreshold << endl | |
328 | << " EMC Energy threshold = " << fEmcEnergyThreshold << endl | |
329 | << " PPSD Clustering threshold = " << fPpsdClusteringThreshold << endl | |
ed4205d8 | 330 | << " PPSD Energy threshold = " << fPpsdEnergyThreshold << endl |
331 | << " CPV Clustering threshold = " << fCpvClusteringThreshold << endl | |
332 | << " CPV Energy threshold = " << fCpvEnergyThreshold << endl ; | |
d15a28e7 | 333 | } |