A new (final?) geometry developed
[u/mrichter/AliRoot.git] / PHOS / AliPHOSEmcRecPoint.cxx
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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
d15a28e7 18//_________________________________________________________________________
b2a60966 19// RecPoint implementation for PHOS-EMC
20// An EmcRecPoint is a cluster of digits
baef0810 21//*--
b2a60966 22//*-- Author: Dmitri Peressounko (RRC KI & SUBATECH)
23
d15a28e7 24
25// --- ROOT system ---
9f616d61 26#include "TPad.h"
27#include "TH2.h"
d15a28e7 28#include "TMath.h"
9f616d61 29#include "TCanvas.h"
d15a28e7 30
31// --- Standard library ---
32
de9ec31b 33#include <iostream.h>
d15a28e7 34
35// --- AliRoot header files ---
36
7932f811 37 #include "AliGenerator.h"
d15a28e7 38#include "AliPHOSGeometry.h"
39#include "AliPHOSEmcRecPoint.h"
40#include "AliRun.h"
7b7c1533 41#include "AliPHOSGetter.h"
d15a28e7 42
43ClassImp(AliPHOSEmcRecPoint)
44
45//____________________________________________________________________________
7932f811 46AliPHOSEmcRecPoint::AliPHOSEmcRecPoint() : AliPHOSRecPoint()
d15a28e7 47{
48 // ctor
49
50 fMulDigit = 0 ;
51 fAmp = 0. ;
7932f811 52 fCoreEnergy = 0 ;
53 fEnergyList = 0 ;
d15a28e7 54 fLocPos.SetX(1000000.) ; //Local position should be evaluated
7b7c1533 55
83974468 56}
57
58//____________________________________________________________________________
59AliPHOSEmcRecPoint::~AliPHOSEmcRecPoint()
60{
88714635 61 // dtor
a4e98857 62
83974468 63 if ( fEnergyList )
64 delete[] fEnergyList ;
d15a28e7 65}
66
9f616d61 67//____________________________________________________________________________
83974468 68void AliPHOSEmcRecPoint::AddDigit(AliPHOSDigit & digit, Float_t Energy)
d15a28e7 69{
b2a60966 70 // Adds a digit to the RecPoint
a4e98857 71 // and accumulates the total amplitude and the multiplicity
d15a28e7 72
7932f811 73 if(fEnergyList == 0)
74 fEnergyList = new Float_t[fMaxDigit];
75
d15a28e7 76 if ( fMulDigit >= fMaxDigit ) { // increase the size of the lists
9f616d61 77 fMaxDigit*=2 ;
83974468 78 Int_t * tempo = new ( Int_t[fMaxDigit] ) ;
9f616d61 79 Float_t * tempoE = new ( Float_t[fMaxDigit] ) ;
80
81 Int_t index ;
d15a28e7 82 for ( index = 0 ; index < fMulDigit ; index++ ){
83974468 83 tempo[index] = fDigitsList[index] ;
d15a28e7 84 tempoE[index] = fEnergyList[index] ;
85 }
86
9f616d61 87 delete [] fDigitsList ;
83974468 88 fDigitsList = new ( Int_t[fMaxDigit] ) ;
9f616d61 89
90 delete [] fEnergyList ;
91 fEnergyList = new ( Float_t[fMaxDigit] ) ;
92
93 for ( index = 0 ; index < fMulDigit ; index++ ){
94 fDigitsList[index] = tempo[index] ;
95 fEnergyList[index] = tempoE[index] ;
96 }
97
98 delete [] tempo ;
99 delete [] tempoE ;
100 } // if
d15a28e7 101
83974468 102 fDigitsList[fMulDigit] = digit.GetIndexInList() ;
103 fEnergyList[fMulDigit] = Energy ;
104 fMulDigit++ ;
d15a28e7 105 fAmp += Energy ;
7932f811 106
107 EvalPHOSMod(&digit) ;
d15a28e7 108}
109
110//____________________________________________________________________________
ad8cfaf4 111Bool_t AliPHOSEmcRecPoint::AreNeighbours(AliPHOSDigit * digit1, AliPHOSDigit * digit2 ) const
d15a28e7 112{
a4e98857 113 // Tells if (true) or not (false) two digits are neighbors
d15a28e7 114
115 Bool_t aren = kFALSE ;
116
7b7c1533 117 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
118 AliPHOSGeometry * phosgeom = (AliPHOSGeometry*)gime->PHOSGeometry();
119
d15a28e7 120 Int_t relid1[4] ;
92862013 121 phosgeom->AbsToRelNumbering(digit1->GetId(), relid1) ;
d15a28e7 122
123 Int_t relid2[4] ;
92862013 124 phosgeom->AbsToRelNumbering(digit2->GetId(), relid2) ;
d15a28e7 125
92862013 126 Int_t rowdiff = TMath::Abs( relid1[2] - relid2[2] ) ;
127 Int_t coldiff = TMath::Abs( relid1[3] - relid2[3] ) ;
d15a28e7 128
92862013 129 if (( coldiff <= 1 ) && ( rowdiff <= 1 ) && (coldiff + rowdiff > 0))
d15a28e7 130 aren = kTRUE ;
131
132 return aren ;
133}
134
135//____________________________________________________________________________
2a941f4e 136Int_t AliPHOSEmcRecPoint::Compare(const TObject * obj) const
d15a28e7 137{
b2a60966 138 // Compares two RecPoints according to their position in the PHOS modules
139
7932f811 140 Float_t delta = 1 ; //Width of "Sorting row". If you changibg this
141 //value (what is senseless) change as vell delta in
142 //AliPHOSTrackSegmentMakerv* and other RecPoints...
d15a28e7 143 Int_t rv ;
144
145 AliPHOSEmcRecPoint * clu = (AliPHOSEmcRecPoint *)obj ;
146
147
ad8cfaf4 148 Int_t phosmod1 = GetPHOSMod() ;
92862013 149 Int_t phosmod2 = clu->GetPHOSMod() ;
d15a28e7 150
92862013 151 TVector3 locpos1;
7932f811 152 GetLocalPosition(locpos1) ;
92862013 153 TVector3 locpos2;
154 clu->GetLocalPosition(locpos2) ;
d15a28e7 155
92862013 156 if(phosmod1 == phosmod2 ) {
7932f811 157 Int_t rowdif = (Int_t)TMath::Ceil(locpos1.X()/delta)-(Int_t)TMath::Ceil(locpos2.X()/delta) ;
d15a28e7 158 if (rowdif> 0)
7932f811 159 rv = 1 ;
d15a28e7 160 else if(rowdif < 0)
7932f811 161 rv = -1 ;
92862013 162 else if(locpos1.Z()>locpos2.Z())
d15a28e7 163 rv = -1 ;
164 else
165 rv = 1 ;
166 }
167
168 else {
92862013 169 if(phosmod1 < phosmod2 )
d15a28e7 170 rv = -1 ;
171 else
172 rv = 1 ;
173 }
174
175 return rv ;
176}
177
9f616d61 178//______________________________________________________________________________
baef0810 179void AliPHOSEmcRecPoint::ExecuteEvent(Int_t event, Int_t px, Int_t py) const
9f616d61 180{
7932f811 181// Commented by Dmitri Peressounko: there is no possibility to ensure,
7b7c1533 182// that AliPHOSGetter keeps the correct information.
7932f811 183
184// // Execute action corresponding to one event
185// // This member function is called when a AliPHOSRecPoint is clicked with the locator
186// //
187// // If Left button is clicked on AliPHOSRecPoint, the digits are switched on
188// // and switched off when the mouse button is released.
189// //
9f616d61 190
7932f811 191// // static Int_t pxold, pyold;
9f616d61 192
7b7c1533 193// AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
9f616d61 194
7932f811 195// static TGraph * digitgraph = 0 ;
83974468 196
7932f811 197// if (!gPad->IsEditable()) return;
83974468 198
7932f811 199// TH2F * histo = 0 ;
200// TCanvas * histocanvas ;
83974468 201
7932f811 202// switch (event) {
83974468 203
7932f811 204// case kButton1Down: {
205// AliPHOSDigit * digit ;
7b7c1533 206// AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
207// AliPHOSGeometry * phosgeom = (AliPHOSGeometry*)gime->PHOSGeometry();
7932f811 208// Int_t iDigit;
209// Int_t relid[4] ;
83974468 210
7932f811 211// const Int_t kMulDigit = AliPHOSEmcRecPoint::GetDigitsMultiplicity() ;
212// Float_t * xi = new Float_t[kMulDigit] ;
213// Float_t * zi = new Float_t[kMulDigit] ;
83974468 214
7932f811 215// // create the histogram for the single cluster
216// // 1. gets histogram boundaries
217// Float_t ximax = -999. ;
218// Float_t zimax = -999. ;
219// Float_t ximin = 999. ;
220// Float_t zimin = 999. ;
83974468 221
7932f811 222// for(iDigit=0; iDigit<kMulDigit; iDigit++) {
7b7c1533 223// digit = (AliPHOSDigit *) ( gime->Digit(fDigitsList[iDigit]) ) ;
7932f811 224// phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
225// phosgeom->RelPosInModule(relid, xi[iDigit], zi[iDigit]);
226// if ( xi[iDigit] > ximax )
227// ximax = xi[iDigit] ;
228// if ( xi[iDigit] < ximin )
229// ximin = xi[iDigit] ;
230// if ( zi[iDigit] > zimax )
231// zimax = zi[iDigit] ;
232// if ( zi[iDigit] < zimin )
233// zimin = zi[iDigit] ;
234// }
235// ximax += phosgeom->GetCrystalSize(0) / 2. ;
236// zimax += phosgeom->GetCrystalSize(2) / 2. ;
237// ximin -= phosgeom->GetCrystalSize(0) / 2. ;
238// zimin -= phosgeom->GetCrystalSize(2) / 2. ;
239// Int_t xdim = (int)( (ximax - ximin ) / phosgeom->GetCrystalSize(0) + 0.5 ) ;
240// Int_t zdim = (int)( (zimax - zimin ) / phosgeom->GetCrystalSize(2) + 0.5 ) ;
83974468 241
7932f811 242// // 2. gets the histogram title
83974468 243
7932f811 244// Text_t title[100] ;
245// sprintf(title,"Energy=%1.2f GeV ; Digits ; %d ", GetEnergy(), GetDigitsMultiplicity()) ;
83974468 246
7932f811 247// if (!histo) {
248// delete histo ;
249// histo = 0 ;
250// }
251// histo = new TH2F("cluster3D", title, xdim, ximin, ximax, zdim, zimin, zimax) ;
83974468 252
7932f811 253// Float_t x, z ;
254// for(iDigit=0; iDigit<kMulDigit; iDigit++) {
7b7c1533 255// digit = (AliPHOSDigit *) ( gime->Digit(fDigitsList[iDigit]) ) ;
7932f811 256// phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
257// phosgeom->RelPosInModule(relid, x, z);
258// histo->Fill(x, z, fEnergyList[iDigit] ) ;
259// }
83974468 260
7932f811 261// if (!digitgraph) {
262// digitgraph = new TGraph(kMulDigit,xi,zi);
263// digitgraph-> SetMarkerStyle(5) ;
264// digitgraph-> SetMarkerSize(1.) ;
265// digitgraph-> SetMarkerColor(1) ;
266// digitgraph-> Paint("P") ;
267// }
83974468 268
7932f811 269// Print() ;
270// histocanvas = new TCanvas("cluster", "a single cluster", 600, 500) ;
271// histocanvas->Draw() ;
272// histo->Draw("lego1") ;
83974468 273
7932f811 274// delete[] xi ;
275// delete[] zi ;
83974468 276
7932f811 277// break;
278// }
83974468 279
7932f811 280// case kButton1Up:
281// if (digitgraph) {
282// delete digitgraph ;
283// digitgraph = 0 ;
284// }
285// break;
9f616d61 286
7932f811 287// }
9f616d61 288}
289
d15a28e7 290//____________________________________________________________________________
7932f811 291void AliPHOSEmcRecPoint::EvalDispersion(Float_t logWeight,TClonesArray * digits)
d15a28e7 292{
b2a60966 293 // Calculates the dispersion of the shower at the origine of the RecPoint
294
e5b16749 295 Float_t d = 0. ;
296 Float_t wtot = 0. ;
d15a28e7 297
d084d50d 298 Float_t x = 0.;
299 Float_t z = 0.;
d15a28e7 300
301 AliPHOSDigit * digit ;
7b7c1533 302
303 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
304 AliPHOSGeometry * phosgeom = (AliPHOSGeometry*)gime->PHOSGeometry();
d15a28e7 305
e5b16749 306
307 // Calculates the center of gravity in the local PHOS-module coordinates
308
d15a28e7 309 Int_t iDigit;
e5b16749 310
311 for(iDigit=0; iDigit<fMulDigit; iDigit++) {
312 digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ;
313 Int_t relid[4] ;
314 Float_t xi ;
315 Float_t zi ;
316 phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
317 phosgeom->RelPosInModule(relid, xi, zi);
318 Float_t w = TMath::Max( 0., logWeight + TMath::Log( fEnergyList[iDigit] / fAmp ) ) ;
319 x += xi * w ;
320 z += zi * w ;
321 wtot += w ;
322 }
323 x /= wtot ;
324 z /= wtot ;
325
326
327// Calculates the dispersion in coordinates
328 wtot = 0.;
88714635 329 for(iDigit=0; iDigit < fMulDigit; iDigit++) {
7932f811 330 digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ;
d15a28e7 331 Int_t relid[4] ;
332 Float_t xi ;
333 Float_t zi ;
92862013 334 phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
335 phosgeom->RelPosInModule(relid, xi, zi);
7932f811 336 Float_t w = TMath::Max(0.,logWeight+TMath::Log(fEnergyList[iDigit]/fAmp ) ) ;
92862013 337 d += w*((xi-x)*(xi-x) + (zi-z)*(zi-z) ) ;
d15a28e7 338 wtot+=w ;
d084d50d 339
340
d15a28e7 341 }
e5b16749 342
7932f811 343
92862013 344 d /= wtot ;
d15a28e7 345
7932f811 346 fDispersion = TMath::Sqrt(d) ;
c63c49e9 347
d15a28e7 348}
fad3e5b9 349//______________________________________________________________________________
e5b16749 350void AliPHOSEmcRecPoint::EvalCoreEnergy(Float_t logWeight, TClonesArray * digits)
fad3e5b9 351{
a4e98857 352 // This function calculates energy in the core,
353 // i.e. within a radius rad = 3cm around the center. Beyond this radius
354 // in accordance with shower profile the energy deposition
fad3e5b9 355 // should be less than 2%
356
fad3e5b9 357 Float_t coreRadius = 3 ;
358
e5b16749 359 Float_t x = 0 ;
360 Float_t z = 0 ;
fad3e5b9 361
362 AliPHOSDigit * digit ;
7b7c1533 363
364 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
365 AliPHOSGeometry * phosgeom = (AliPHOSGeometry*)gime->PHOSGeometry();
366
fad3e5b9 367 Int_t iDigit;
e5b16749 368
369// Calculates the center of gravity in the local PHOS-module coordinates
370 Float_t wtot = 0;
371 for(iDigit=0; iDigit<fMulDigit; iDigit++) {
372 digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ;
373 Int_t relid[4] ;
374 Float_t xi ;
375 Float_t zi ;
376 phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
377 phosgeom->RelPosInModule(relid, xi, zi);
378 Float_t w = TMath::Max( 0., logWeight + TMath::Log( fEnergyList[iDigit] / fAmp ) ) ;
379 x += xi * w ;
380 z += zi * w ;
381 wtot += w ;
382 }
383 x /= wtot ;
384 z /= wtot ;
385
386
fad3e5b9 387 for(iDigit=0; iDigit < fMulDigit; iDigit++) {
7932f811 388 digit = (AliPHOSDigit *) ( digits->At(fDigitsList[iDigit]) ) ;
fad3e5b9 389 Int_t relid[4] ;
390 Float_t xi ;
391 Float_t zi ;
392 phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
393 phosgeom->RelPosInModule(relid, xi, zi);
394 Float_t distance = TMath::Sqrt((xi-x)*(xi-x)+(zi-z)*(zi-z)) ;
395 if(distance < coreRadius)
7932f811 396 fCoreEnergy += fEnergyList[iDigit] ;
fad3e5b9 397 }
398
fad3e5b9 399}
d15a28e7 400
401//____________________________________________________________________________
7932f811 402void AliPHOSEmcRecPoint::EvalElipsAxis(Float_t logWeight,TClonesArray * digits)
d15a28e7 403{
b2a60966 404 // Calculates the axis of the shower ellipsoid
83974468 405
e8dbb96e 406 Double_t wtot = 0. ;
407 Double_t x = 0.;
408 Double_t z = 0.;
409 Double_t dxx = 0.;
410 Double_t dzz = 0.;
411 Double_t dxz = 0.;
d15a28e7 412
413 AliPHOSDigit * digit ;
7b7c1533 414
415 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
416 AliPHOSGeometry * phosgeom = (AliPHOSGeometry*)gime->PHOSGeometry();
417
d15a28e7 418 Int_t iDigit;
419
e5b16749 420
d15a28e7 421 for(iDigit=0; iDigit<fMulDigit; iDigit++) {
7932f811 422 digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ;
d15a28e7 423 Int_t relid[4] ;
424 Float_t xi ;
425 Float_t zi ;
92862013 426 phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
427 phosgeom->RelPosInModule(relid, xi, zi);
7932f811 428 Double_t w = TMath::Max(0.,logWeight+TMath::Log(fEnergyList[iDigit]/fAmp ) ) ;
92862013 429 dxx += w * xi * xi ;
d15a28e7 430 x += w * xi ;
92862013 431 dzz += w * zi * zi ;
d15a28e7 432 z += w * zi ;
92862013 433 dxz += w * xi * zi ;
d15a28e7 434 wtot += w ;
435 }
92862013 436 dxx /= wtot ;
d15a28e7 437 x /= wtot ;
92862013 438 dxx -= x * x ;
439 dzz /= wtot ;
d15a28e7 440 z /= wtot ;
92862013 441 dzz -= z * z ;
442 dxz /= wtot ;
443 dxz -= x * z ;
d15a28e7 444
69183710 445// //Apply correction due to non-perpendicular incidence
446// Double_t CosX ;
447// Double_t CosZ ;
7b7c1533 448// AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
449// AliPHOSGeometry * phosgeom = (AliPHOSGeometry*)gime->PHOSGeometry();
450 // Double_t DistanceToIP= (Double_t ) phosgeom->GetIPtoCrystalSurface() ;
69183710 451
452// CosX = DistanceToIP/TMath::Sqrt(DistanceToIP*DistanceToIP+x*x) ;
453// CosZ = DistanceToIP/TMath::Sqrt(DistanceToIP*DistanceToIP+z*z) ;
454
455// dxx = dxx/(CosX*CosX) ;
456// dzz = dzz/(CosZ*CosZ) ;
457// dxz = dxz/(CosX*CosZ) ;
458
459
7932f811 460 fLambda[0] = 0.5 * (dxx + dzz) + TMath::Sqrt( 0.25 * (dxx - dzz) * (dxx - dzz) + dxz * dxz ) ;
461 if(fLambda[0] > 0)
462 fLambda[0] = TMath::Sqrt(fLambda[0]) ;
e8dbb96e 463
7932f811 464 fLambda[1] = 0.5 * (dxx + dzz) - TMath::Sqrt( 0.25 * (dxx - dzz) * (dxx - dzz) + dxz * dxz ) ;
465 if(fLambda[1] > 0) //To avoid exception if numerical errors lead to negative lambda.
466 fLambda[1] = TMath::Sqrt(fLambda[1]) ;
e8dbb96e 467 else
7932f811 468 fLambda[1]= 0. ;
d15a28e7 469}
470
471//____________________________________________________________________________
7932f811 472void AliPHOSEmcRecPoint::EvalAll(Float_t logWeight, TClonesArray * digits )
ad8cfaf4 473{
baef0810 474 // Evaluates all shower parameters
475
7932f811 476 AliPHOSRecPoint::EvalAll(logWeight,digits) ;
477 EvalLocalPosition(logWeight, digits) ;
478 EvalElipsAxis(logWeight, digits) ;
479 EvalDispersion(logWeight, digits) ;
e5b16749 480 EvalCoreEnergy(logWeight, digits);
ad8cfaf4 481}
482//____________________________________________________________________________
7932f811 483void AliPHOSEmcRecPoint::EvalLocalPosition(Float_t logWeight, TClonesArray * digits)
b2a60966 484{
485 // Calculates the center of gravity in the local PHOS-module coordinates
b2a60966 486 Float_t wtot = 0. ;
487
488 Int_t relid[4] ;
489
490 Float_t x = 0. ;
491 Float_t z = 0. ;
492
493 AliPHOSDigit * digit ;
494
7b7c1533 495 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
496 AliPHOSGeometry * phosgeom = (AliPHOSGeometry*)gime->PHOSGeometry();
b2a60966 497
498 Int_t iDigit;
499
b2a60966 500 for(iDigit=0; iDigit<fMulDigit; iDigit++) {
7932f811 501 digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ;
b2a60966 502
503 Float_t xi ;
504 Float_t zi ;
505 phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
506 phosgeom->RelPosInModule(relid, xi, zi);
7932f811 507 Float_t w = TMath::Max( 0., logWeight + TMath::Log( fEnergyList[iDigit] / fAmp ) ) ;
b2a60966 508 x += xi * w ;
509 z += zi * w ;
510 wtot += w ;
b2a60966 511
9ce1a8d9 512 }
69183710 513
514 x /= wtot ;
515 z /= wtot ;
ad8cfaf4 516
517 // Correction for the depth of the shower starting point (TDR p 127)
518 Float_t para = 0.925 ;
519 Float_t parb = 6.52 ;
520
1b799736 521 Float_t xo,yo,zo ; //Coordinates of the origin
522 gAlice->Generator()->GetOrigin(xo,yo,zo) ;
523
5830e1d9 524 Float_t phi = phosgeom->GetPHOSAngle(relid[0]) ;
1b799736 525
526 //Transform to the local ref.frame
527 Float_t xoL,yoL ;
528 xoL = xo*TMath::Cos(phi)-yo*TMath::Sin(phi) ;
529 yoL = xo*TMath::Sin(phi)+yo*TMath::Cos(phi) ;
530
531 Float_t radius = TMath::Sqrt((xoL-x)*(xoL-x)+
5830e1d9 532 (phosgeom->GetIPtoCrystalSurface()-yoL)*(phosgeom->GetIPtoCrystalSurface()-yoL)+
533 (zo-z)*(zo-z));
1b799736 534
535 Float_t incidencephi = TMath::ATan((x-xoL ) / radius) ;
536 Float_t incidencetheta = TMath::ATan((z-zo) / radius) ;
ad8cfaf4 537
538 Float_t depthx = ( para * TMath::Log(fAmp) + parb ) * TMath::Sin(incidencephi) ;
539 Float_t depthz = ( para * TMath::Log(fAmp) + parb ) * TMath::Sin(incidencetheta) ;
540
541
542 fLocPos.SetX(x - depthx) ;
b2a60966 543 fLocPos.SetY(0.) ;
ad8cfaf4 544 fLocPos.SetZ(z - depthz) ;
b2a60966 545
bc68d12c 546 fLocPosM = 0 ;
b2a60966 547}
548
549//____________________________________________________________________________
ad8cfaf4 550Float_t AliPHOSEmcRecPoint::GetMaximalEnergy(void) const
d15a28e7 551{
b2a60966 552 // Finds the maximum energy in the cluster
553
d15a28e7 554 Float_t menergy = 0. ;
555
556 Int_t iDigit;
557
558 for(iDigit=0; iDigit<fMulDigit; iDigit++) {
559
560 if(fEnergyList[iDigit] > menergy)
561 menergy = fEnergyList[iDigit] ;
562 }
563 return menergy ;
564}
565
566//____________________________________________________________________________
ad8cfaf4 567Int_t AliPHOSEmcRecPoint::GetMultiplicityAtLevel(const Float_t H) const
d15a28e7 568{
b2a60966 569 // Calculates the multiplicity of digits with energy larger than H*energy
570
d15a28e7 571 Int_t multipl = 0 ;
572 Int_t iDigit ;
573 for(iDigit=0; iDigit<fMulDigit; iDigit++) {
574
575 if(fEnergyList[iDigit] > H * fAmp)
576 multipl++ ;
577 }
578 return multipl ;
579}
580
581//____________________________________________________________________________
7932f811 582Int_t AliPHOSEmcRecPoint::GetNumberOfLocalMax(Int_t * maxAt, Float_t * maxAtEnergy,
583 Float_t locMaxCut,TClonesArray * digits) const
d15a28e7 584{
b2a60966 585 // Calculates the number of local maxima in the cluster using fLocalMaxCut as the minimum
a4e98857 586 // energy difference between two local maxima
b2a60966 587
d15a28e7 588 AliPHOSDigit * digit ;
589 AliPHOSDigit * digitN ;
590
591
592 Int_t iDigitN ;
593 Int_t iDigit ;
594
7932f811 595 for(iDigit = 0; iDigit < fMulDigit; iDigit++)
596 maxAt[iDigit] = (Int_t) digits->At(fDigitsList[iDigit]) ;
597
d15a28e7 598
6ad0bfa0 599 for(iDigit = 0 ; iDigit < fMulDigit; iDigit++) {
9f616d61 600 if(maxAt[iDigit] != -1) {
601 digit = (AliPHOSDigit *) maxAt[iDigit] ;
83974468 602
6ad0bfa0 603 for(iDigitN = 0; iDigitN < fMulDigit; iDigitN++) {
7932f811 604 digitN = (AliPHOSDigit *) digits->At(fDigitsList[iDigitN]) ;
d15a28e7 605
9f616d61 606 if ( AreNeighbours(digit, digitN) ) {
d15a28e7 607 if (fEnergyList[iDigit] > fEnergyList[iDigitN] ) {
608 maxAt[iDigitN] = -1 ;
6ad0bfa0 609 // but may be digit too is not local max ?
7932f811 610 if(fEnergyList[iDigit] < fEnergyList[iDigitN] + locMaxCut)
d15a28e7 611 maxAt[iDigit] = -1 ;
612 }
613 else {
614 maxAt[iDigit] = -1 ;
6ad0bfa0 615 // but may be digitN too is not local max ?
7932f811 616 if(fEnergyList[iDigit] > fEnergyList[iDigitN] - locMaxCut)
d15a28e7 617 maxAt[iDigitN] = -1 ;
618 }
619 } // if Areneighbours
620 } // while digitN
621 } // slot not empty
622 } // while digit
623
624 iDigitN = 0 ;
6ad0bfa0 625 for(iDigit = 0; iDigit < fMulDigit; iDigit++) {
d15a28e7 626 if(maxAt[iDigit] != -1){
627 maxAt[iDigitN] = maxAt[iDigit] ;
9f616d61 628 maxAtEnergy[iDigitN] = fEnergyList[iDigit] ;
629 iDigitN++ ;
d15a28e7 630 }
631 }
632 return iDigitN ;
633}
634
d15a28e7 635
d15a28e7 636
637//____________________________________________________________________________
638void AliPHOSEmcRecPoint::Print(Option_t * option)
639{
b2a60966 640 // Print the list of digits belonging to the cluster
641
d15a28e7 642 cout << "AliPHOSEmcRecPoint: " << endl ;
643
d15a28e7 644 Int_t iDigit;
7932f811 645 cout << " digits # = " ;
646 for(iDigit=0; iDigit<fMulDigit; iDigit++)
647 cout << fDigitsList[iDigit] << " " ;
648 cout << endl ;
649
650 cout << " Energies = " ;
651 for(iDigit=0; iDigit<fMulDigit; iDigit++)
652 cout << fEnergyList[iDigit] << " ";
653 cout << endl ;
83974468 654
bc68d12c 655 cout << " Primaries " ;
656 for(iDigit = 0;iDigit < fMulTrack; iDigit++)
657 cout << fTracksList[iDigit] << " " << endl ;
658
d15a28e7 659 cout << " Multiplicity = " << fMulDigit << endl ;
660 cout << " Cluster Energy = " << fAmp << endl ;
bc68d12c 661 cout << " Number of primaries " << fMulTrack << endl ;
83974468 662 cout << " Stored at position " << GetIndexInList() << endl ;
663
d15a28e7 664}
88714635 665
7932f811 666