1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
18 Revision 1.10 2002/10/22 14:45:37 alibrary
19 Introducing Riostream.h
21 Revision 1.9 2002/10/14 14:57:00 hristov
22 Merging the VirtualMC branch to the main development branch (HEAD)
24 Revision 1.7.6.1 2002/10/14 13:14:08 hristov
25 Updating VirtualMC to v3-09-02
27 Revision 1.8 2002/09/09 17:23:28 nilsen
28 Minor changes in support of changes to AliITSdigitS?D class'.
32 #include <Riostream.h>
34 #include "TClonesArray.h"
35 #include "AliITSdigit.h"
36 #include "AliITSclusterSSD.h"
38 ClassImp(AliITSclusterSSD)
40 //______________________________________________________________________
41 AliITSclusterSSD::AliITSclusterSSD(){
42 // default constructor
51 fLeftNeighbour = kFALSE;
52 fRightNeighbour = kFALSE;
53 fCrossedClusterIndexes = 0;
56 //______________________________________________________________________
57 AliITSclusterSSD::AliITSclusterSSD(Int_t ndigits, Int_t *DigitIndexes,
58 TObjArray *Digits, Bool_t side){
59 // non-default constructor
64 fDigitsIndex = new TArrayI(fNDigits,DigitIndexes );
66 fCrossedClusterIndexes = new TArrayI(300);
67 fLeftNeighbour = kFALSE;
68 fRightNeighbour = kFALSE;
73 //______________________________________________________________________
74 AliITSclusterSSD::~AliITSclusterSSD(){
78 delete fCrossedClusterIndexes;
80 //______________________________________________________________________
81 AliITSclusterSSD::AliITSclusterSSD(const AliITSclusterSSD &OneSCluster){
84 if (this == &OneSCluster) return;
85 fNDigits = OneSCluster.fNDigits;
86 fSide=OneSCluster.fSide;
87 fDigits=OneSCluster.fDigits;
88 fDigitsIndex = new TArrayI(fNDigits);
89 fLeftNeighbour = OneSCluster.fLeftNeighbour;
90 fRightNeighbour = OneSCluster.fRightNeighbour;
93 fNCrosses = OneSCluster.fNCrosses;
94 fConsumed = OneSCluster.fConsumed;
96 for (i = 0; i< fNCrosses ; i++){
97 fCrossedClusterIndexes[i] = OneSCluster.fCrossedClusterIndexes[i];
99 for (i = 0; i< fNDigits ; i++){
100 fDigitsIndex[i]=OneSCluster.fDigitsIndex[i];
104 //______________________________________________________________________
105 AliITSclusterSSD& AliITSclusterSSD::operator=(const AliITSclusterSSD
107 // assignment operator
109 if (this == &OneSCluster) return *this;
110 fNDigits = OneSCluster.fNDigits;
111 fSide=OneSCluster.fSide;
112 fDigits=OneSCluster.fDigits;
113 fDigitsIndex = new TArrayI(fNDigits);
114 fLeftNeighbour = OneSCluster.fLeftNeighbour;
115 fRightNeighbour = OneSCluster.fRightNeighbour;
118 fNCrosses = OneSCluster.fNCrosses;
119 fConsumed = OneSCluster.fConsumed;
121 for (i = 0; i< fNCrosses ; i++){
122 fCrossedClusterIndexes[i] = OneSCluster.fCrossedClusterIndexes[i];
124 for (i = 0; i< fNDigits ; i++){
125 fDigitsIndex[i]=OneSCluster.fDigitsIndex[i];
129 //______________________________________________________________________
130 Int_t AliITSclusterSSD::SplitCluster(Int_t where, Int_t *outdigits){
131 //This methods generate data necessery to make new object of this class
132 //I choosen this way, because methods TClonesArray::Add* dont work
133 //so I have to use constraction: new (a[i]) Creator(params...);
134 //where 'a' is a TClonesArray
135 //This method generate params - see AliITSmoduleSSD::SplitCluster;
136 Int_t tmp = fNDigits;
139 outdigits[ind++]=(*fDigitsIndex)[where];
140 //coping border strip (it is shared by this two clusters)
141 for (Int_t i = (where+1); i < tmp; i++) {
142 outdigits[ind++]=(*fDigitsIndex)[i];
143 //"moving" strips from this to the new one
144 (*fDigitsIndex)[i]=-1;
145 fNDigits--; //deleting strips from this cluster
149 //______________________________________________________________________
150 Int_t AliITSclusterSSD::GetDigitStripNo(Int_t digit){
151 // return strip no of a digit
152 if (digit<0) return -1;
153 return (digit>(fNDigits-1)) ? -1 :
154 ((AliITSdigitSSD*)(fDigits->At((*fDigitsIndex)[digit])))->GetStripNumber();
156 //______________________________________________________________________
157 Int_t AliITSclusterSSD::GetDigitSignal(Int_t digit){
158 // returns digit signal
160 if (digit<0||digit>=fNDigits) return -1;
161 index = (*fDigitsIndex)[digit];
162 signal = ((AliITSdigitSSD*)(fDigits->At(index)))->GetSignal();
164 if(signal>1.e5) printf("GetDigitSignal: digit %d index %d signal %d\n",
165 digit,index, signal);
169 //______________________________________________________________________
170 void AliITSclusterSSD::AddCross(Int_t clIndex){
171 // add cluster cross to list of cluster crosses
173 (*fCrossedClusterIndexes)[fNCrosses++] = clIndex;
175 //______________________________________________________________________
176 Int_t AliITSclusterSSD::GetCross(Int_t crIndex){
177 // return crossing cluster
179 return ((crIndex>-1)&&(crIndex<fNCrosses))?(*fCrossedClusterIndexes)[crIndex]:-1;
181 //______________________________________________________________________
182 Double_t AliITSclusterSSD::CentrOfGravity(){
183 // return center of gravity of the cluster
186 if (fLeftNeighbour) ret+=(GetDigitStripNo(0)*0.5*GetDigitSignal(0));
187 else ret+=(GetDigitStripNo(0)*GetDigitSignal(0));
188 if (fRightNeighbour) ret+=(GetDigitStripNo(fNDigits -1)*0.5*GetDigitSignal(fNDigits -1));
189 else ret+=(GetDigitStripNo(fNDigits -1)*GetDigitSignal(fNDigits-1));
190 for (Int_t i=1;i<fNDigits-1;i++){
191 ret +=GetDigitStripNo(i)*GetDigitSignal(i);
194 if (fTotalSignal<0) GetTotalSignal();
196 return (ret/fTotalSignal);
198 //______________________________________________________________________
199 Float_t AliITSclusterSSD::GetTotalSignal(){
200 // return total signal
205 fTotalSignal = (Float_t)GetDigitSignal(0);
206 //printf("1 digit: signal %d \n",GetDigitSignal(0));
209 if (fLeftNeighbour) fTotalSignal += (Float_t)(0.5*GetDigitSignal(0));
210 else fTotalSignal += (Float_t) GetDigitSignal(0);
211 //printf("GetTotalSignal :i DigitSignal %d %d \n",0,GetDigitSignal(0));
212 if (fRightNeighbour) fTotalSignal += (Float_t)(0.5*GetDigitSignal(
214 else fTotalSignal += (Float_t)GetDigitSignal(fNDigits-1);
215 //printf("GetTotalSignal :i DigitSignal %d %d \n",fNDigits -1,GetDigitSignal(fNDigits -1));
216 for (Int_t i = 1;i<fNDigits -1;i++){
217 fTotalSignal += (Float_t)GetDigitSignal(i);
218 //printf("GetTotalSignal :i DigitSignal %d %d \n",i,GetDigitSignal(i));
220 //printf("GetTotalSignal: fNDigits %d fTotalSignal %.0f \n",fNDigits,fTotalSignal);
224 //______________________________________________________________________
225 Float_t AliITSclusterSSD::GetTotalSignalError(){
226 // return the error on the signal
228 for (Int_t i =1; i<fNDigits -1; i++){
229 err+=0.1*GetDigitSignal(i);
231 if (GetLeftNeighbour()){
232 err+=GetDigitSignal(0);
234 err+=0.1*GetDigitSignal(0);
236 if (GetRightNeighbour()){
237 err+=GetDigitSignal(fNDigits -1);
239 err+=0.1*GetDigitSignal(fNDigits -1);
243 //______________________________________________________________________
244 void AliITSclusterSSD::DelCross(Int_t index){
245 // remove cross clusters from the list of cross clusters
246 Int_t i,j; //iterators
248 for (i =0;i<fNCrosses;i++){
249 if ((*fCrossedClusterIndexes)[i] == index){
250 for (j=i;j<fNCrosses-1;j++){
251 (*fCrossedClusterIndexes)[j]=(*fCrossedClusterIndexes)[j+1];
258 //______________________________________________________________________
259 Int_t *AliITSclusterSSD::GetTracks(Int_t &nt){
260 // return the track number of the cluster
261 Int_t ntrk = GetDigit(0)->GetNTracks();
262 Int_t ndig = GetNumOfDigits();
263 Int_t *idig = new Int_t[ndig];
264 Int_t *sdig = new Int_t[ndig];
265 Int_t *itrk = new Int_t[ndig*ntrk];
269 for(i=0;i<ndig;i++){idig[i] = i;sdig[i] = GetDigit(i)->GetSignal();}
270 TMath::Sort(ndig,sdig,idig,kTRUE);
271 for(i=0;i<ndig*ntrk;i++) itrk[i] = -3;
273 for(i=0;i<ndig;i++){ // fill itrk with track numbers in order of digit size
275 for(k=0;k<ntrk;k++) if((trk = GetDigit(j)->GetTrack(k))>=0) {
280 for(i=0;i<10;i++) fTrack[i] = -3;
281 fTrack[0] = itrk[0]; // first element
285 for(j=0;j<k;j++) if(fTrack[j]==itrk[i]) b = kFALSE;
286 if(b){fTrack[k] = itrk[i]; k++;}
303 for (i=0;i<10;i++) fTrack[i] = -3;
305 //cout<<"GetTrack start -------: fNDigits ="<<fNDigits<<endl;
307 for (i = 0; i<fNDigits; i++) {
308 tidx = GetDigit(i)->GetTracks();
309 n = GetDigit(i)->GetNTracks();
310 for (j = 0; j<n && j<10;j++) {
313 fTrack[ntracks] = tidx[j];
315 }else if(tidx[j] != fTrack[ntracks-1]){
320 } // end if ntracks > 9
321 fTrack[ntracks-1] = tidx[j];
322 } // end if ntracke == 0
323 } // end if tidx[j] >=0
324 } // 3-tracks loop for the digit
333 //______________________________________________________________________
334 Double_t AliITSclusterSSD::GetPosition(){
335 // return position of the cluster
340 ret = GetDigitStripNo(0);
343 ret = EtaAlgorithm();
346 ret = CentrOfGravity();
350 //______________________________________________________________________
351 Double_t AliITSclusterSSD::EtaAlgorithm(){
352 // algorithm for determing cluster position
353 if (fNDigits != 2) return -1;
355 Int_t strip1 = GetDigit(0)->GetStripNumber();
356 Int_t strip2 = GetDigit(1)->GetStripNumber();
357 Int_t signal1 = GetDigit(0)->GetSignal();
358 Int_t signal2 = GetDigit(1)->GetSignal();
364 eta = ((Double_t)signal2)/((Double_t)(signal1+signal2));
365 if (eta<0.04) return strip1;
366 if (eta>0.96) return strip2;
367 return (strip1 + 0.43478261*eta + 0.2826087);
369 eta = ((Double_t)signal1)/((Double_t)(signal1+signal2));
370 if (eta<0.04) return strip2;
371 if (eta>0.96) return strip1;
372 return (strip2 + 0.43478261*eta + 0.2826087);
375 //______________________________________________________________________
376 Double_t AliITSclusterSSD::GetPositionError(){
377 // return the position error
378 return (GetNumOfDigits()+1)/2;
380 //______________________________________________________________________
381 Bool_t AliITSclusterSSD::IsCrossingWith(Int_t idx){
382 // return the cluster to which he crosses
384 for (Int_t i =0; i< fNCrosses;i++){
385 if (GetCross(i) == idx) return kTRUE;