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 **************************************************************************/
16 //_________________________________________________________________________
17 // Rec Point in the PHOS EM calorimeter
18 //*-- Author : Dmitri Peressounko RRC KI
19 //////////////////////////////////////////////////////////////////////////////
21 // --- ROOT system ---
27 // --- Standard library ---
31 // --- AliRoot header files ---
33 #include "AliPHOSGeometry.h"
34 #include "AliPHOSEmcRecPoint.h"
37 ClassImp(AliPHOSEmcRecPoint)
39 //____________________________________________________________________________
40 AliPHOSEmcRecPoint::AliPHOSEmcRecPoint(Float_t W0, Float_t LocMaxCut)
47 fEnergyList = new Float_t[fMaxDigit];
48 AliPHOSGeometry * PHOSGeom = (AliPHOSGeometry *) fGeom ;
49 fDelta = PHOSGeom->GetCrystalSize(0) ;
51 fLocMaxCut = LocMaxCut ;
52 fLocPos.SetX(1000000.) ; //Local position should be evaluated
55 //____________________________________________________________________________
56 AliPHOSEmcRecPoint::~AliPHOSEmcRecPoint()
61 //____________________________________________________________________________
62 void AliPHOSEmcRecPoint::AddDigit(AliDigitNew & digit, Float_t Energy)
64 // adds a digit to the digits list
65 // and accumulates the total amplitude and the multiplicity
67 if ( fMulDigit >= fMaxDigit ) { // increase the size of the lists
69 int * tempo = new ( int[fMaxDigit] ) ;
70 Float_t * tempoE = new ( Float_t[fMaxDigit] ) ;
73 for ( index = 0 ; index < fMulDigit ; index++ ){
74 tempo[index] = fDigitsList[index] ;
75 tempoE[index] = fEnergyList[index] ;
78 delete [] fDigitsList ;
79 fDigitsList = new ( int[fMaxDigit] ) ;
81 delete [] fEnergyList ;
82 fEnergyList = new ( Float_t[fMaxDigit] ) ;
84 for ( index = 0 ; index < fMulDigit ; index++ ){
85 fDigitsList[index] = tempo[index] ;
86 fEnergyList[index] = tempoE[index] ;
93 fDigitsList[fMulDigit] = (int) &digit ;
94 fEnergyList[fMulDigit++] = Energy ;
98 //____________________________________________________________________________
99 Bool_t AliPHOSEmcRecPoint::AreNeighbours(AliPHOSDigit * digit1, AliPHOSDigit * digit2 )
102 Bool_t aren = kFALSE ;
104 AliPHOSGeometry * PHOSGeom = (AliPHOSGeometry *) fGeom ;
106 PHOSGeom->AbsToRelNumbering(digit1->GetId(), relid1) ;
109 PHOSGeom->AbsToRelNumbering(digit2->GetId(), relid2) ;
111 Int_t RowDiff = TMath::Abs( relid1[2] - relid2[2] ) ;
112 Int_t ColDiff = TMath::Abs( relid1[3] - relid2[3] ) ;
114 if (( ColDiff<=1 ) && ( RowDiff <= 1 ) && (ColDiff+RowDiff > 0))
120 //____________________________________________________________________________
121 Int_t AliPHOSEmcRecPoint::Compare(TObject * obj)
125 AliPHOSEmcRecPoint * clu = (AliPHOSEmcRecPoint *)obj ;
128 Int_t PHOSMod1 = this->GetPHOSMod() ;
129 Int_t PHOSMod2 = clu->GetPHOSMod() ;
132 this->GetLocalPosition(LocPos1) ;
134 clu->GetLocalPosition(LocPos2) ;
136 if(PHOSMod1 == PHOSMod2 ) {
137 Int_t rowdif = (Int_t)TMath::Ceil(LocPos1.X()/fDelta)-(Int_t)TMath::Ceil(LocPos2.X()/fDelta) ;
142 else if(LocPos1.Z()>LocPos2.Z())
149 if(PHOSMod1 < PHOSMod2 )
158 //______________________________________________________________________________
159 void AliPHOSEmcRecPoint::ExecuteEvent(Int_t event, Int_t px, Int_t py)
161 //Execute action corresponding to one event
162 // This member function is called when a AliPHOSRecPoint is clicked with the locator
164 // If Left button is clicked on AliPHOSRecPoint, the digits are switched on
165 // and switched off when the mouse button is released.
168 // static Int_t pxold, pyold;
170 static TGraph * DigitGraph = 0 ;
172 if (!gPad->IsEditable()) return;
175 TCanvas * HistoCanvas ;
180 AliPHOSDigit * digit ;
181 AliPHOSGeometry * PHOSGeom = (AliPHOSGeometry *) fGeom ;
184 Float_t xi[fMulDigit] ;
185 Float_t zi[fMulDigit] ;
187 // create the histogram for the single cluster
188 // 1. gets histogram boundaries
189 Float_t ximax = -999. ;
190 Float_t zimax = -999. ;
191 Float_t ximin = 999. ;
192 Float_t zimin = 999. ;
194 for(iDigit=0; iDigit<fMulDigit; iDigit++) {
195 digit = (AliPHOSDigit *) fDigitsList[iDigit];
196 PHOSGeom->AbsToRelNumbering(digit->GetId(), relid) ;
197 PHOSGeom->RelPosInModule(relid, xi[iDigit], zi[iDigit]);
198 if ( xi[iDigit] > ximax )
200 if ( xi[iDigit] < ximin )
202 if ( zi[iDigit] > zimax )
204 if ( zi[iDigit] < zimin )
207 ximax += PHOSGeom->GetCrystalSize(0) / 2. ;
208 zimax += PHOSGeom->GetCrystalSize(2) / 2. ;
209 ximin -= PHOSGeom->GetCrystalSize(0) / 2. ;
210 zimin -= PHOSGeom->GetCrystalSize(2) / 2. ;
211 Int_t xdim = (int)( (ximax - ximin ) / PHOSGeom->GetCrystalSize(0) + 0.5 ) ;
212 Int_t zdim = (int)( (zimax - zimin ) / PHOSGeom->GetCrystalSize(2) + 0.5 ) ;
214 // 2. gets the histogram title
217 sprintf(title,"Energy=%1.2f GeV ; Digits ; %d ", GetEnergy(), GetDigitsMultiplicity()) ;
223 Histo = new TH2F("cluster3D", title, xdim, ximin, ximax, zdim, zimin, zimax) ;
226 for(iDigit=0; iDigit<fMulDigit; iDigit++) {
227 digit = (AliPHOSDigit *) fDigitsList[iDigit];
228 PHOSGeom->AbsToRelNumbering(digit->GetId(), relid) ;
229 PHOSGeom->RelPosInModule(relid, x, z);
230 Histo->Fill(x, z, fEnergyList[iDigit] ) ;
234 DigitGraph = new TGraph(fMulDigit,xi,zi);
235 DigitGraph-> SetMarkerStyle(5) ;
236 DigitGraph-> SetMarkerSize(1.) ;
237 DigitGraph-> SetMarkerColor(1) ;
238 DigitGraph-> Paint("P") ;
242 HistoCanvas = new TCanvas("cluser", "a single cluster", 600, 500) ;
243 HistoCanvas->Draw() ;
244 Histo->Draw("lego1") ;
259 //____________________________________________________________________________
260 Float_t AliPHOSEmcRecPoint::GetDispersion()
266 GetLocalPosition(LocPos);
267 Float_t x = LocPos.X() ;
268 Float_t z = LocPos.Z() ;
269 // Int_t i = GetPHOSMod() ;
271 AliPHOSDigit * digit ;
272 AliPHOSGeometry * PHOSGeom = (AliPHOSGeometry *) fGeom ;
275 for(iDigit=0; iDigit<fMulDigit; iDigit++) {
276 digit = (AliPHOSDigit *) fDigitsList[iDigit];
280 PHOSGeom->AbsToRelNumbering(digit->GetId(), relid) ;
281 PHOSGeom->RelPosInModule(relid, xi, zi);
282 Float_t w = TMath::Max(0.,fW0+TMath::Log(fEnergyList[iDigit]/fAmp ) ) ;
283 D += w*((xi-x)*(xi-x) + (zi-z)*(zi-z) ) ;
289 return TMath::Sqrt(D) ;
292 //____________________________________________________________________________
293 void AliPHOSEmcRecPoint::GetElipsAxis(Float_t * lambda)
302 AliPHOSDigit * digit ;
303 AliPHOSGeometry * PHOSGeom = (AliPHOSGeometry *) fGeom ;
306 for(iDigit=0; iDigit<fMulDigit; iDigit++) {
307 digit = (AliPHOSDigit *) fDigitsList[iDigit];
311 PHOSGeom->AbsToRelNumbering(digit->GetId(), relid) ;
312 PHOSGeom->RelPosInModule(relid, xi, zi);
313 Float_t w = TMath::Max(0.,fW0+TMath::Log(fEnergyList[iDigit]/fAmp ) ) ;
331 lambda[0] = TMath::Sqrt( 0.5 * (Dxx + Dzz) + TMath::Sqrt( 0.25 * (Dxx - Dzz) * (Dxx - Dzz) + Dxz * Dxz ) ) ;
332 lambda[1] = TMath::Sqrt( 0.5 * (Dxx + Dzz) - TMath::Sqrt( 0.25 * (Dxx - Dzz) * (Dxx - Dzz) + Dxz * Dxz ) ) ;
335 //____________________________________________________________________________
336 Float_t AliPHOSEmcRecPoint::GetMaximalEnergy(void)
338 Float_t menergy = 0. ;
342 for(iDigit=0; iDigit<fMulDigit; iDigit++) {
344 if(fEnergyList[iDigit] > menergy)
345 menergy = fEnergyList[iDigit] ;
350 //____________________________________________________________________________
351 Int_t AliPHOSEmcRecPoint::GetMultiplicityAtLevel(Float_t H)
355 for(iDigit=0; iDigit<fMulDigit; iDigit++) {
357 if(fEnergyList[iDigit] > H * fAmp)
363 //____________________________________________________________________________
364 Int_t AliPHOSEmcRecPoint::GetNumberOfLocalMax(Int_t * maxAt, Float_t * maxAtEnergy)
366 AliPHOSDigit * digit ;
367 AliPHOSDigit * digitN ;
373 for(iDigit = 0; iDigit < fMulDigit; iDigit++){
374 maxAt[iDigit] = fDigitsList[iDigit] ;
377 for(iDigit = 0 ; iDigit < fMulDigit; iDigit++) {
378 if(maxAt[iDigit] != -1) {
379 digit = (AliPHOSDigit *) maxAt[iDigit] ;
381 for(iDigitN = 0; iDigitN < fMulDigit; iDigitN++) {
382 digitN = (AliPHOSDigit *) fDigitsList[iDigitN] ;
384 if ( AreNeighbours(digit, digitN) ) {
385 if (fEnergyList[iDigit] > fEnergyList[iDigitN] ) {
386 maxAt[iDigitN] = -1 ;
387 // but may be digit too is not local max ?
388 if(fEnergyList[iDigit] < fEnergyList[iDigitN] + fLocMaxCut)
393 // but may be digitN too is not local max ?
394 if(fEnergyList[iDigit] > fEnergyList[iDigitN] - fLocMaxCut)
395 maxAt[iDigitN] = -1 ;
397 } // if Areneighbours
403 for(iDigit = 0; iDigit < fMulDigit; iDigit++) {
404 if(maxAt[iDigit] != -1){
405 maxAt[iDigitN] = maxAt[iDigit] ;
406 maxAtEnergy[iDigitN] = fEnergyList[iDigit] ;
413 //____________________________________________________________________________
414 void AliPHOSEmcRecPoint::GetLocalPosition(TVector3 &LPos)
416 if( fLocPos.X() < 1000000.) { // already evaluated
428 AliPHOSDigit * digit ;
430 AliPHOSGeometry * PHOSGeom = (AliPHOSGeometry *) fGeom ;
435 for(iDigit=0; iDigit<fMulDigit; iDigit++) {
436 digit = (AliPHOSDigit *) fDigitsList[iDigit];
440 PHOSGeom->AbsToRelNumbering(digit->GetId(), relid) ;
441 PHOSGeom->RelPosInModule(relid, xi, zi);
442 Float_t w = TMath::Max( 0., fW0 + TMath::Log( fEnergyList[iDigit] / fAmp ) ) ;
458 // //____________________________________________________________________________
459 // AliPHOSEmcRecPoint& AliPHOSEmcRecPoint::operator = (AliPHOSEmcRecPoint Clu)
461 // int * DL = Clu.GetDigitsList() ;
464 // delete fDigitsList ;
466 // AliPHOSDigit * digit ;
470 // for(iDigit=0; iDigit<fMulDigit; iDigit++) {
471 // digit = (AliPHOSDigit *) DL[iDigit];
472 // AddDigit(*digit) ;
475 // fAmp = Clu.GetTotalEnergy() ;
476 // fGeom = Clu.GetGeom() ;
478 // Clu.GetLocalPosition(LocPos) ;
480 // fMulDigit = Clu.GetMultiplicity() ;
481 // fMaxDigit = Clu.GetMaximumMultiplicity() ;
482 // fPHOSMod = Clu.GetPHOSMod() ;
483 // fW0 = Clu.GetLogWeightCut() ;
484 // fDelta = Clu.GetDelta() ;
485 // fLocMaxCut = Clu.GetLocMaxCut() ;
492 //____________________________________________________________________________
493 void AliPHOSEmcRecPoint::Print(Option_t * option)
495 cout << "AliPHOSEmcRecPoint: " << endl ;
497 AliPHOSDigit * digit ;
499 AliPHOSGeometry * PHOSGeom = (AliPHOSGeometry *) fGeom ;
505 for(iDigit=0; iDigit<fMulDigit; iDigit++) {
506 digit = (AliPHOSDigit *) fDigitsList[iDigit];
507 PHOSGeom->AbsToRelNumbering(digit->GetId(), relid) ;
508 PHOSGeom->RelPosInModule(relid, xi, zi);
509 cout << " Id = " << digit->GetId() ;
510 cout << " module = " << relid[0] ;
511 cout << " x = " << xi ;
512 cout << " z = " << zi ;
513 cout << " Energy = " << fEnergyList[iDigit] << endl ;
515 cout << " Multiplicity = " << fMulDigit << endl ;
516 cout << " Cluster Energy = " << fAmp << endl ;
520 //______________________________________________________________________________
521 void AliPHOSEmcRecPoint::Streamer(TBuffer &R__b)
523 // Stream an object of class AliPHOSEmcRecPoint.
525 if (R__b.IsReading()) {
526 Version_t R__v = R__b.ReadVersion(); if (R__v) { }
527 AliPHOSRecPoint::Streamer(R__b);
530 R__b.ReadArray(fEnergyList);
533 R__b.WriteVersion(AliPHOSEmcRecPoint::IsA());
534 AliPHOSRecPoint::Streamer(R__b);
537 R__b.WriteArray(fEnergyList, GetMaximumDigitMultiplicity() );