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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 | ||
37 | // --- ROOT system --- | |
38 | ||
39 | #include "TMath.h" | |
40 | ||
41 | // --- Standard library --- | |
42 | ||
de9ec31b | 43 | #include <iostream.h> |
d15a28e7 | 44 | |
45 | // --- AliRoot header files --- | |
46 | ||
47 | #include "AliPHOSClusterizerv1.h" | |
48 | #include "AliPHOSDigit.h" | |
49 | #include "AliPHOSEmcRecPoint.h" | |
50 | #include "AliPHOSPpsdRecPoint.h" | |
51 | #include "AliPHOSv0.h" | |
52 | #include "AliRun.h" | |
53 | ||
54 | ClassImp(AliPHOSClusterizerv1) | |
55 | ||
56 | //____________________________________________________________________________ | |
57 | AliPHOSClusterizerv1::AliPHOSClusterizerv1() | |
58 | { | |
b2a60966 | 59 | // default ctor (to be used) |
60 | ||
d15a28e7 | 61 | fA = 0.; |
62 | fB = 0.01 ; | |
6b9b768e | 63 | fGeom = AliPHOSGeometry::GetInstance(); |
d15a28e7 | 64 | fNumberOfEmcClusters = 0 ; |
65 | fNumberOfPpsdClusters = 0 ; | |
66 | fEmcClusteringThreshold = 0.1; | |
67 | fEmcEnergyThreshold = 0.01; | |
d72dfbc3 | 68 | fPpsdClusteringThreshold = 0.0; |
69 | fPpsdEnergyThreshold = 0.1; | |
d15a28e7 | 70 | fW0 = 4.5 ; |
71 | fLocMaxCut = 0.06 ; | |
d72dfbc3 | 72 | fW0CPV = 4.5 ; |
73 | fLocMaxCutCPV = 0.06 ; | |
d15a28e7 | 74 | } |
75 | ||
76 | //____________________________________________________________________________ | |
77 | Int_t AliPHOSClusterizerv1::AreNeighbours(AliPHOSDigit * d1, AliPHOSDigit * d2) | |
78 | { | |
b2a60966 | 79 | // Gives the neighbourness of two digits = 0 are not neighbour but continue searching |
80 | // = 1 are neighbour | |
81 | // = 2 are not neighbour but do not continue searching | |
82 | // neighbours are defined as digits having at least common vertex | |
83 | // The order of d1 and d2 is important: first (d1) should be a digit already in a cluster | |
84 | // which is compared to a digit (d2) not yet in a cluster | |
85 | ||
d15a28e7 | 86 | Int_t rv = 0 ; |
87 | ||
d15a28e7 | 88 | Int_t relid1[4] ; |
6b9b768e | 89 | fGeom->AbsToRelNumbering(d1->GetId(), relid1) ; |
d15a28e7 | 90 | |
91 | Int_t relid2[4] ; | |
6b9b768e | 92 | fGeom->AbsToRelNumbering(d2->GetId(), relid2) ; |
d15a28e7 | 93 | |
94 | if ( (relid1[0] == relid2[0]) && (relid1[1]==relid2[1]) ) { // inside the same PHOS module and the same PPSD Module | |
92862013 | 95 | Int_t rowdiff = TMath::Abs( relid1[2] - relid2[2] ) ; |
96 | Int_t coldiff = TMath::Abs( relid1[3] - relid2[3] ) ; | |
d15a28e7 | 97 | |
92862013 | 98 | if (( coldiff <= 1 ) && ( rowdiff <= 1 )){ |
d15a28e7 | 99 | rv = 1 ; |
100 | } | |
101 | else { | |
102 | if((relid2[2] > relid1[2]) && (relid2[3] > relid1[3]+1)) | |
103 | rv = 2; // Difference in row numbers is too large to look further | |
104 | } | |
105 | ||
106 | } | |
107 | else { | |
108 | ||
109 | if( (relid1[0] < relid2[0]) || (relid1[1] < relid2[1]) ) | |
110 | rv=2 ; | |
111 | ||
112 | } | |
d72dfbc3 | 113 | |
114 | //Do NOT clusterize upper PPSD | |
115 | if(fGeom->GetNumberOfCPVLayers() > 1 && | |
116 | relid1[1] > 0 && | |
117 | relid1[1] < fGeom->GetNumberOfPadsPhi()*fGeom->GetNumberOfPadsPhi() ) rv = 2 ; | |
118 | ||
d15a28e7 | 119 | return rv ; |
120 | } | |
121 | ||
122 | //____________________________________________________________________________ | |
123 | void AliPHOSClusterizerv1::FillandSort(const DigitsList * dl, TObjArray * tl) | |
124 | { | |
b2a60966 | 125 | // Copies the digits with energy above thershold and sorts the list |
d15a28e7 | 126 | // according to increasing Id number |
127 | ||
d15a28e7 | 128 | Int_t relid[4] ; |
129 | ||
130 | TIter next(dl) ; | |
131 | AliPHOSDigit * digit ; | |
132 | ||
133 | while ( (digit = (AliPHOSDigit *)next()) ) { | |
cf239357 | 134 | |
135 | // cout << " clusterizerv1 " << endl ; | |
136 | // int nprim = digit->GetNprimary() ; | |
137 | // int * aprim = digit->GetPrimary() ; | |
138 | // for ( int ii = 0 ; ii < nprim ; ii++) | |
139 | // cout << ii << " prim = " << aprim[ii] << endl ; | |
140 | ||
d15a28e7 | 141 | Int_t id = digit->GetId() ; |
142 | Float_t ene = Calibrate(digit->GetAmp()) ; | |
6b9b768e | 143 | fGeom->AbsToRelNumbering(id, relid) ; |
d15a28e7 | 144 | if(relid[1]==0){ // EMC |
6a3f1304 | 145 | if ( ene > fEmcEnergyThreshold ) |
d15a28e7 | 146 | tl->Add(digit) ; |
147 | } | |
148 | ||
149 | else { //Ppsd | |
150 | if ( ene > fPpsdEnergyThreshold ) | |
6a3f1304 | 151 | tl->Add(digit) ; |
d15a28e7 | 152 | } |
153 | ||
154 | } | |
155 | tl->Sort() ; | |
156 | } | |
157 | ||
158 | //____________________________________________________________________________ | |
159 | void AliPHOSClusterizerv1:: GetNumberOfClustersFound(Int_t * numb) | |
160 | { | |
b2a60966 | 161 | // Fills numb with the number of EMC (numb[0]) clusters found |
162 | // PPSD (numb[1]) clusters found | |
163 | ||
164 | numb[0] = fNumberOfEmcClusters ; | |
165 | numb[1] = fNumberOfPpsdClusters ; | |
d15a28e7 | 166 | } |
167 | ||
168 | //____________________________________________________________________________ | |
169 | Bool_t AliPHOSClusterizerv1::IsInEmc(AliPHOSDigit * digit) | |
170 | { | |
b2a60966 | 171 | // Tells if (true) or not (false) the digit is in a PHOS-EMC module |
172 | ||
9f616d61 | 173 | Bool_t rv = kFALSE ; |
d15a28e7 | 174 | |
d15a28e7 | 175 | Int_t relid[4] ; |
6b9b768e | 176 | fGeom->AbsToRelNumbering(digit->GetId(), relid) ; |
d15a28e7 | 177 | |
178 | if ( relid[1] == 0 ) | |
179 | rv = kTRUE; | |
180 | ||
181 | return rv ; | |
182 | } | |
183 | ||
184 | //____________________________________________________________________________ | |
88714635 | 185 | void AliPHOSClusterizerv1::MakeClusters(const DigitsList * dl, |
186 | AliPHOSRecPoint::RecPointsList * emcl, | |
187 | AliPHOSRecPoint::RecPointsList * ppsdl) | |
d15a28e7 | 188 | { |
b2a60966 | 189 | // Steering method to construct the clusters stored in a list of Reconstructed Points |
190 | // A cluster is defined as a list of neighbour digits | |
c161df70 | 191 | |
192 | fNumberOfEmcClusters = 0 ; | |
193 | fNumberOfPpsdClusters = 0 ; | |
194 | ||
d15a28e7 | 195 | // Fill and sort the working digits list |
92862013 | 196 | TObjArray tempodigitslist( dl->GetEntries() ) ; |
197 | FillandSort(dl, &tempodigitslist) ; | |
d15a28e7 | 198 | |
199 | // Clusterization starts | |
92862013 | 200 | TIter nextdigit(&tempodigitslist) ; |
d15a28e7 | 201 | AliPHOSDigit * digit ; |
92862013 | 202 | Bool_t notremoved = kTRUE ; |
6ad0bfa0 | 203 | |
d15a28e7 | 204 | while ( (digit = (AliPHOSDigit *)nextdigit()) ) { // scan over the list of digits |
205 | AliPHOSRecPoint * clu ; | |
c161df70 | 206 | |
83974468 | 207 | AliPHOSDigit ** clusterdigitslist = new AliPHOSDigit*[dl->GetEntries()] ; |
d15a28e7 | 208 | Int_t index ; |
d72dfbc3 | 209 | if (( ( IsInEmc(digit) ) && ( Calibrate(digit->GetAmp() ) > fEmcClusteringThreshold ) ) || |
9f616d61 | 210 | ( ( !IsInEmc(digit) ) && ( Calibrate(digit->GetAmp() ) > fPpsdClusteringThreshold ) ) ) { |
d15a28e7 | 211 | |
212 | Int_t iDigitInCluster = 0 ; | |
213 | ||
6ad0bfa0 | 214 | if ( IsInEmc(digit) ) { |
83974468 | 215 | // start a new EMC RecPoint |
d72dfbc3 | 216 | if(fNumberOfEmcClusters >= emcl->GetSize()) emcl->Expand(2*fNumberOfEmcClusters+1) ; |
83974468 | 217 | (*emcl)[fNumberOfEmcClusters] = new AliPHOSEmcRecPoint(fW0, fLocMaxCut) ; |
6b9b768e | 218 | clu = (AliPHOSEmcRecPoint *) emcl->At(fNumberOfEmcClusters) ; |
9f616d61 | 219 | fNumberOfEmcClusters++ ; |
220 | clu->AddDigit(*digit, Calibrate(digit->GetAmp())) ; | |
83974468 | 221 | clusterdigitslist[iDigitInCluster] = digit ; |
9f616d61 | 222 | iDigitInCluster++ ; |
92862013 | 223 | tempodigitslist.Remove(digit) ; |
ca77b032 | 224 | |
d72dfbc3 | 225 | } else { |
83974468 | 226 | |
227 | // start a new PPSD cluster | |
d72dfbc3 | 228 | if(fNumberOfPpsdClusters >= ppsdl->GetSize()) ppsdl->Expand(2*fNumberOfPpsdClusters+1); |
229 | if (strcmp(fGeom->GetName(),"GPS2") == 0) { | |
230 | (*ppsdl)[fNumberOfPpsdClusters] = new AliPHOSPpsdRecPoint() ; | |
231 | clu = (AliPHOSPpsdRecPoint *) ppsdl->At(fNumberOfPpsdClusters) ; | |
232 | } | |
233 | else if (strcmp(fGeom->GetName(),"IHEP") == 0) { | |
234 | (*ppsdl)[fNumberOfPpsdClusters] = new AliPHOSEmcRecPoint(fW0CPV, fLocMaxCutCPV) ; | |
235 | clu = (AliPHOSEmcRecPoint *) ppsdl->At(fNumberOfPpsdClusters) ; | |
236 | } | |
9f616d61 | 237 | fNumberOfPpsdClusters++ ; |
6ad0bfa0 | 238 | clu->AddDigit(*digit, Calibrate(digit->GetAmp()) ) ; |
83974468 | 239 | clusterdigitslist[iDigitInCluster] = digit ; |
9f616d61 | 240 | iDigitInCluster++ ; |
92862013 | 241 | tempodigitslist.Remove(digit) ; |
d15a28e7 | 242 | nextdigit.Reset() ; |
243 | ||
9f616d61 | 244 | // Here we remove resting EMC digits, which cannot make cluster |
245 | ||
92862013 | 246 | if( notremoved ) { |
9f616d61 | 247 | while( ( digit = (AliPHOSDigit *)nextdigit() ) ) { |
9f616d61 | 248 | if( IsInEmc(digit) ) |
92862013 | 249 | tempodigitslist.Remove(digit) ; |
d15a28e7 | 250 | else |
251 | break ; | |
d72dfbc3 | 252 | } |
253 | notremoved = kFALSE ; | |
254 | } | |
d15a28e7 | 255 | |
256 | } // else | |
257 | ||
258 | nextdigit.Reset() ; | |
259 | ||
260 | AliPHOSDigit * digitN ; | |
261 | index = 0 ; | |
9f616d61 | 262 | while (index < iDigitInCluster){ // scan over digits already in cluster |
83974468 | 263 | digit = clusterdigitslist[index] ; |
9f616d61 | 264 | index++ ; |
d15a28e7 | 265 | while ( (digitN = (AliPHOSDigit *)nextdigit()) ) { // scan over the reduced list of digits |
d72dfbc3 | 266 | Int_t ineb = AreNeighbours(digit, digitN); // call (digit,digitN) in THAT oder !!!!! |
d15a28e7 | 267 | switch (ineb ) { |
9f616d61 | 268 | case 0 : // not a neighbour |
d72dfbc3 | 269 | break ; |
9f616d61 | 270 | case 1 : // are neighbours |
83974468 | 271 | clu->AddDigit(*digitN, Calibrate( digitN->GetAmp() ) ) ; |
272 | clusterdigitslist[iDigitInCluster] = digitN ; | |
9f616d61 | 273 | iDigitInCluster++ ; |
92862013 | 274 | tempodigitslist.Remove(digitN) ; |
d15a28e7 | 275 | break ; |
9f616d61 | 276 | case 2 : // too far from each other |
d15a28e7 | 277 | goto endofloop; |
278 | } // switch | |
279 | ||
280 | } // while digitN | |
281 | ||
282 | endofloop: ; | |
283 | nextdigit.Reset() ; | |
284 | ||
285 | } // loop over cluster | |
d72dfbc3 | 286 | } //below energy theshold |
287 | ||
31aa6d6c | 288 | delete[] clusterdigitslist ; |
289 | ||
d15a28e7 | 290 | } // while digit |
291 | ||
92862013 | 292 | tempodigitslist.Clear() ; |
83974468 | 293 | |
c161df70 | 294 | ppsdl->Sort() ; |
295 | Int_t index ; | |
296 | for(index = 0; index < ppsdl->GetEntries(); index++) | |
297 | ((AliPHOSPpsdRecPoint *)ppsdl->At(index))->SetIndexInList(index) ; | |
d15a28e7 | 298 | } |
299 | ||
300 | //____________________________________________________________________________ | |
301 | void AliPHOSClusterizerv1::PrintParameters() | |
302 | { | |
b2a60966 | 303 | // Print the energy thresholds |
304 | ||
d15a28e7 | 305 | cout << "PHOS Clusterizer version 1 :" << endl |
306 | << " EMC Clustering threshold = " << fEmcClusteringThreshold << endl | |
307 | << " EMC Energy threshold = " << fEmcEnergyThreshold << endl | |
308 | << " PPSD Clustering threshold = " << fPpsdClusteringThreshold << endl | |
309 | << " PPSD Energy threshold = " << fPpsdEnergyThreshold << endl ; | |
310 | } |