Bug corrections
[u/mrichter/AliRoot.git] / EMCAL / AliEMCALRecPoint.cxx
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ab48128d 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/* $Id$ */
16//_________________________________________________________________________
70a93198 17// Reconstructed Points for the EMCAL
18// A RecPoint is a cluster of digits
d64c959b 19//*-- Author: Yves Schutz (SUBATECH)
70a93198 20//*-- Author: Dmitri Peressounko (RRC KI & SUBATECH)
21//*-- Author: Heather Gray (LBL) merged AliEMCALRecPoint and AliEMCALTowerRecPoint 02/04
ab48128d 22
23// --- ROOT system ---
24#include "TPad.h"
d64c959b 25#include "TGraph.h"
26#include "TPaveText.h"
ab48128d 27#include "TClonesArray.h"
70a93198 28#include "TMath.h"
ab48128d 29
30// --- Standard library ---
ab48128d 31
32// --- AliRoot header files ---
70a93198 33#include "AliGenerator.h"
ab48128d 34#include "AliEMCALGeometry.h"
35#include "AliEMCALDigit.h"
36#include "AliEMCALRecPoint.h"
37#include "AliEMCALGetter.h"
38
39ClassImp(AliEMCALRecPoint)
40
41
42//____________________________________________________________________________
43AliEMCALRecPoint::AliEMCALRecPoint()
44 : AliRecPoint()
45{
46 // ctor
692088ae 47 fMaxTrack = 0 ;
70a93198 48 fMulDigit = 0 ;
87cdc3be 49 fMaxParent = 0;
50 fMulParent = 0;
70a93198 51 fAmp = 0. ;
52 fCoreEnergy = 0 ;
53 fEnergyList = 0 ;
87cdc3be 54 fParentsList = 0;
70a93198 55 fTime = 0. ;
56 fLocPos.SetX(0.) ; //Local position should be evaluated
57 fCoreRadius = 10; //HG Check this
ab48128d 58}
59
60//____________________________________________________________________________
61AliEMCALRecPoint::AliEMCALRecPoint(const char * opt) : AliRecPoint(opt)
62{
63 // ctor
ab48128d 64 fMaxTrack = 200 ;
87cdc3be 65 fMaxParent = 200;
66 fMulDigit = 0 ;
67 fMulParent = 0;
70a93198 68 fAmp = 0. ;
69 fCoreEnergy = 0 ;
70 fEnergyList = 0 ;
87cdc3be 71 fParentsList = new Int_t[fMaxParent];
70a93198 72 fTime = -1. ;
73 fLocPos.SetX(1000000.) ; //Local position should be evaluated
74 fCoreRadius = 10; //HG Check this
75}
76//____________________________________________________________________________
77AliEMCALRecPoint::~AliEMCALRecPoint()
78{
79 // dtor
80 if ( fEnergyList )
81 delete[] fEnergyList ;
87cdc3be 82 if ( fParentsList)
83 delete[] fParentsList;
70a93198 84}
85
86//____________________________________________________________________________
87void AliEMCALRecPoint::AddDigit(AliEMCALDigit & digit, Float_t Energy)
88{
89 // Adds a digit to the RecPoint
90 // and accumulates the total amplitude and the multiplicity
91
92 if(fEnergyList == 0)
93 fEnergyList = new Float_t[fMaxDigit];
94
95 if ( fMulDigit >= fMaxDigit ) { // increase the size of the lists
96 fMaxDigit*=2 ;
a64a06d6 97 Int_t * tempo = new Int_t[fMaxDigit];
98 Float_t * tempoE = new Float_t[fMaxDigit];
70a93198 99
100 Int_t index ;
101 for ( index = 0 ; index < fMulDigit ; index++ ){
102 tempo[index] = fDigitsList[index] ;
103 tempoE[index] = fEnergyList[index] ;
104 }
105
106 delete [] fDigitsList ;
a64a06d6 107 fDigitsList = new Int_t[fMaxDigit];
70a93198 108
109 delete [] fEnergyList ;
a64a06d6 110 fEnergyList = new Float_t[fMaxDigit];
70a93198 111
112 for ( index = 0 ; index < fMulDigit ; index++ ){
113 fDigitsList[index] = tempo[index] ;
114 fEnergyList[index] = tempoE[index] ;
115 }
116
117 delete [] tempo ;
118 delete [] tempoE ;
119 } // if
120
121 fDigitsList[fMulDigit] = digit.GetIndexInList() ;
122 fEnergyList[fMulDigit] = Energy ;
123 fMulDigit++ ;
124 fAmp += Energy ;
125
126}
127//____________________________________________________________________________
128Bool_t AliEMCALRecPoint::AreNeighbours(AliEMCALDigit * digit1, AliEMCALDigit * digit2 ) const
129{
130 // Tells if (true) or not (false) two digits are neighbours
131 // A neighbour is defined as being two digits which share a corner
132
133 Bool_t areNeighbours = kFALSE ;
134
135 AliEMCALGeometry * geom = (AliEMCALGetter::Instance())->EMCALGeometry();
136
137 Int_t relid1[2] ;
138 geom->AbsToRelNumbering(digit1->GetId(), relid1) ;
139
140 Int_t relid2[2] ;
141 geom->AbsToRelNumbering(digit2->GetId(), relid2) ;
142
143 Int_t rowdiff = TMath::Abs( relid1[0] - relid2[0] ) ;
144 Int_t coldiff = TMath::Abs( relid1[1] - relid2[1] ) ;
145
146 if (( coldiff <= 1 ) && ( rowdiff <= 1 ) && (coldiff + rowdiff > 0))
147 areNeighbours = kTRUE ;
ab48128d 148
70a93198 149 return areNeighbours;
150}
151
152//____________________________________________________________________________
153Int_t AliEMCALRecPoint::Compare(const TObject * obj) const
154{
155 // Compares two RecPoints according to their position in the EMCAL modules
156
157 Float_t delta = 1 ; //Width of "Sorting row". If you change this
158 //value (what is senseless) change as well delta in
159 //AliEMCALTrackSegmentMakerv* and other RecPoints...
160 Int_t rv ;
161
162 AliEMCALRecPoint * clu = (AliEMCALRecPoint *)obj ;
163
164 TVector3 locpos1;
165 GetLocalPosition(locpos1);
166 TVector3 locpos2;
167 clu->GetLocalPosition(locpos2);
168
169 Int_t rowdif = (Int_t)TMath::Ceil(locpos1.X()/delta)-(Int_t)TMath::Ceil(locpos2.X()/delta) ;
170 if (rowdif> 0)
171 rv = 1 ;
172 else if(rowdif < 0)
173 rv = -1 ;
174 else if(locpos1.Y()>locpos2.Y())
175 rv = -1 ;
176 else
177 rv = 1 ;
178
179 return rv ;
ab48128d 180}
181
182//____________________________________________________________________________
183Int_t AliEMCALRecPoint::DistancetoPrimitive(Int_t px, Int_t py)
184{
185 // Compute distance from point px,py to a AliEMCALRecPoint considered as a Tmarker
186 // Compute the closest distance of approach from point px,py to this marker.
187 // The distance is computed in pixels units.
70a93198 188 // HG Still need to update -> Not sure what this should achieve
ab48128d 189
190 TVector3 pos(0.,0.,0.) ;
70a93198 191 GetLocalPosition(pos) ;
ab48128d 192 Float_t x = pos.X() ;
70a93198 193 Float_t y = pos.Y() ;
ab48128d 194 const Int_t kMaxDiff = 10;
195 Int_t pxm = gPad->XtoAbsPixel(x);
196 Int_t pym = gPad->YtoAbsPixel(y);
197 Int_t dist = (px-pxm)*(px-pxm) + (py-pym)*(py-pym);
198
199 if (dist > kMaxDiff) return 9999;
200 return dist;
201}
202
203//___________________________________________________________________________
204 void AliEMCALRecPoint::Draw(Option_t *option)
205 {
206 // Draw this AliEMCALRecPoint with its current attributes
207
208 AppendPad(option);
209 }
210
211//______________________________________________________________________________
70a93198 212void AliEMCALRecPoint::ExecuteEvent(Int_t /*event*/, Int_t, Int_t)
ab48128d 213{
214 // Execute action corresponding to one event
215 // This member function is called when a AliEMCALRecPoint is clicked with the locator
216 //
217 // If Left button is clicked on AliEMCALRecPoint, the digits are switched on
218 // and switched off when the mouse button is released.
219
220 // static Int_t pxold, pyold;
221
70a93198 222 /* static TGraph * digitgraph = 0 ;
ab48128d 223 static TPaveText* clustertext = 0 ;
224
225 if (!gPad->IsEditable()) return;
226
227 switch (event) {
228
229
230 case kButton1Down:{
231 AliEMCALDigit * digit ;
88cb7938 232 AliEMCALGeometry * emcalgeom = (AliEMCALGetter::Instance())->EMCALGeometry() ;
ab48128d 233
234 Int_t iDigit;
70a93198 235 Int_t relid[2] ;
ab48128d 236
237 const Int_t kMulDigit=AliEMCALRecPoint::GetDigitsMultiplicity() ;
238 Float_t * xi = new Float_t [kMulDigit] ;
239 Float_t * zi = new Float_t [kMulDigit] ;
240
241 for(iDigit = 0; iDigit < kMulDigit; iDigit++) {
242 Fatal("AliEMCALRecPoint::ExecuteEvent", " -> Something wrong with the code");
243 digit = 0 ; //dynamic_cast<AliEMCALDigit *>((fDigitsList)[iDigit]);
244 emcalgeom->AbsToRelNumbering(digit->GetId(), relid) ;
245 emcalgeom->PosInAlice(relid, xi[iDigit], zi[iDigit]) ;
246 }
247
248 if (!digitgraph) {
249 digitgraph = new TGraph(fMulDigit,xi,zi);
250 digitgraph-> SetMarkerStyle(5) ;
251 digitgraph-> SetMarkerSize(1.) ;
252 digitgraph-> SetMarkerColor(1) ;
253 digitgraph-> Draw("P") ;
254 }
255 if (!clustertext) {
256
257 TVector3 pos(0.,0.,0.) ;
258 GetLocalPosition(pos) ;
259 clustertext = new TPaveText(pos.X()-10,pos.Z()+10,pos.X()+50,pos.Z()+35,"") ;
260 Text_t line1[40] ;
261 Text_t line2[40] ;
262 sprintf(line1,"Energy=%1.2f GeV",GetEnergy()) ;
263 sprintf(line2,"%d Digits",GetDigitsMultiplicity()) ;
264 clustertext ->AddText(line1) ;
265 clustertext ->AddText(line2) ;
266 clustertext ->Draw("");
267 }
268 gPad->Update() ;
9e5d2067 269 Print("") ;
ab48128d 270 delete[] xi ;
271 delete[] zi ;
272 }
273
274break;
275
276 case kButton1Up:
277 if (digitgraph) {
278 delete digitgraph ;
279 digitgraph = 0 ;
280 }
281 if (clustertext) {
282 delete clustertext ;
283 clustertext = 0 ;
284 }
285
286 break;
287
70a93198 288 }*/
289}
290//____________________________________________________________________________
291void AliEMCALRecPoint::EvalAll(Float_t logWeight,TClonesArray * digits)
292{
293 // Evaluates all shower parameters
294
295 EvalLocalPosition(logWeight, digits) ;
296 EvalElipsAxis(logWeight, digits) ;
297 EvalDispersion(logWeight, digits) ;
298 EvalCoreEnergy(logWeight, digits);
299 EvalTime(digits) ;
300
87cdc3be 301 EvalPrimaries(digits) ;
302 EvalParents(digits);
70a93198 303}
304
305//____________________________________________________________________________
306void AliEMCALRecPoint::EvalDispersion(Float_t logWeight, TClonesArray * digits)
307{
308 // Calculates the dispersion of the shower at the origin of the RecPoint
309
310 Float_t d = 0. ;
311 Float_t wtot = 0. ;
312
313 AliEMCALDigit * digit ;
314
315 AliEMCALGeometry * geom = (AliEMCALGetter::Instance())->EMCALGeometry();
316
317 // Calculates the centre of gravity in the local EMCAL-module coordinates
318 Int_t iDigit;
319
320 if (!fLocPos.X() || !fLocPos.Y())
321 EvalLocalPosition(logWeight, digits) ;
322
323 const Float_t kDeg2Rad = TMath::DegToRad() ;
324
325 Float_t cluEta = fLocPos.X() ;
326 Float_t cluPhi = fLocPos.Y() ;
327 Float_t cluR = fLocPos.Z() ;
328
329 if (gDebug == 2)
330 printf("EvalDispersion: eta,phi,r = %f,%f,%f", cluEta, cluPhi, cluR) ;
331
332 // Calculates the dispersion in coordinates
333 wtot = 0.;
334 for(iDigit=0; iDigit < fMulDigit; iDigit++) {
335 digit = (AliEMCALDigit *) digits->At(fDigitsList[iDigit]) ;
336 Float_t etai = 0.;
337 Float_t phii = 0.;
338 geom->EtaPhiFromIndex(digit->GetId(), etai, phii);
339 phii = phii * kDeg2Rad;
340 if (gDebug == 2)
341 printf("EvalDispersion: id = %d, etai,phii = %f,%f", digit->GetId(), etai, phii) ;
342
343 Float_t w = TMath::Max(0.,logWeight+TMath::Log(fEnergyList[iDigit]/fAmp ) ) ;
344 d += w * ( (etai-cluEta)*(etai-cluEta) + (phii-cluPhi)*(phii-cluPhi) ) ;
345 wtot+=w ;
ab48128d 346 }
70a93198 347
348 if ( wtot > 0 )
349 d /= wtot ;
350 else
351 d = 0. ;
352
353 fDispersion = TMath::Sqrt(d) ;
354
ab48128d 355}
70a93198 356
ab48128d 357//____________________________________________________________________________
70a93198 358void AliEMCALRecPoint::EvalLocalPosition(Float_t logWeight, TClonesArray * digits)
88cb7938 359{
70a93198 360 // Calculates the center of gravity in the local EMCAL-module coordinates
361 Float_t wtot = 0. ;
362
363 // Int_t relid[3] ;
364
365 AliEMCALDigit * digit ;
366 AliEMCALGeometry * geom = (AliEMCALGetter::Instance())->EMCALGeometry();
367 Int_t iDigit;
368 Float_t cluEta = 0;
369 Float_t cluPhi = 0;
370 const Float_t kDeg2Rad = TMath::DegToRad();
371
372 for(iDigit=0; iDigit<fMulDigit; iDigit++) {
373 digit = dynamic_cast<AliEMCALDigit *>(digits->At(fDigitsList[iDigit])) ;
374
375 Float_t etai ;
376 Float_t phii ;
377 geom->EtaPhiFromIndex(digit->GetId(), etai, phii);
378 phii = phii * kDeg2Rad;
379 Float_t w = TMath::Max( 0., logWeight + TMath::Log( fEnergyList[iDigit] / fAmp ) ) ;
380 cluEta += (etai * w) ;
381 cluPhi += (phii * w );
382 wtot += w ;
383 }
ab48128d 384
70a93198 385 if ( wtot > 0 ) {
386 cluEta /= wtot ;
387 cluPhi /= wtot ;
388 } else {
389 cluEta = -1 ;
390 cluPhi = -1.;
391 }
392
393 fLocPos.SetX(cluEta);
394 fLocPos.SetY(cluPhi);
395 fLocPos.SetZ(geom->GetIP2ECASection());
396
397 if (gDebug==2)
398 printf("EvalLocalPosition: eta,phi,r = %f,%f,%f", fLocPos.X(), fLocPos.Y(), fLocPos.Z()) ;
399 fLocPosM = 0 ;
ab48128d 400}
401
70a93198 402//______________________________________________________________________________
403void AliEMCALRecPoint::EvalCoreEnergy(Float_t logWeight, TClonesArray * digits)
404{
405 // This function calculates energy in the core,
406 // i.e. within a radius rad = 3cm around the center. Beyond this radius
407 // in accordance with shower profile the energy deposition
408 // should be less than 2%
409
410 AliEMCALDigit * digit ;
411 const Float_t kDeg2Rad = TMath::DegToRad() ;
412 AliEMCALGeometry * geom = (AliEMCALGetter::Instance())->EMCALGeometry();
413 Int_t iDigit;
414
415 if (!fLocPos.X() || !fLocPos.Y() ) {
416 EvalLocalPosition(logWeight, digits);
417 }
418
419 for(iDigit=0; iDigit < fMulDigit; iDigit++) {
420 digit = (AliEMCALDigit *) ( digits->At(fDigitsList[iDigit]) ) ;
421 Float_t etai = 0. ;
422 Float_t phii = 0. ;
423 geom->PosInAlice(digit->GetId(), etai, phii);
424 phii = phii * kDeg2Rad;
425
426 Float_t distance = TMath::Sqrt((etai-fLocPos.X())*(etai-fLocPos.X())+(phii-fLocPos.Y())*(phii-fLocPos.Y())) ;
427 if(distance < fCoreRadius)
428 fCoreEnergy += fEnergyList[iDigit] ;
429 }
430
431}
ab48128d 432//____________________________________________________________________________
70a93198 433void AliEMCALRecPoint::EvalElipsAxis(Float_t logWeight,TClonesArray * digits)
ab48128d 434{
70a93198 435 // Calculates the axis of the shower ellipsoid in eta and phi
ab48128d 436
70a93198 437 Double_t wtot = 0. ;
438 Double_t x = 0.;
439 Double_t z = 0.;
440 Double_t dxx = 0.;
441 Double_t dzz = 0.;
442 Double_t dxz = 0.;
ab48128d 443
70a93198 444 AliEMCALDigit * digit ;
445
446 AliEMCALGeometry * geom = (AliEMCALGetter::Instance())->EMCALGeometry();
447
448 Int_t iDigit;
ab48128d 449
70a93198 450 for(iDigit=0; iDigit<fMulDigit; iDigit++) {
451 digit = (AliEMCALDigit *) digits->At(fDigitsList[iDigit]) ;
452 Float_t etai = 0. ;
453 Float_t phii = 0. ;
454 geom->EtaPhiFromIndex(digit->GetId(), etai, phii);
455 Double_t w = TMath::Max(0.,logWeight+TMath::Log(fEnergyList[iDigit]/fAmp ) ) ;
456 dxx += w * etai * etai ;
457 x += w * etai ;
458 dzz += w * phii * phii ;
459 z += w * phii ;
460 dxz += w * etai * etai ;
461 wtot += w ;
462 }
463 if ( wtot > 0 ) {
464 dxx /= wtot ;
465 x /= wtot ;
466 dxx -= x * x ;
467 dzz /= wtot ;
468 z /= wtot ;
469 dzz -= z * z ;
470 dxz /= wtot ;
471 dxz -= x * z ;
ab48128d 472
70a93198 473 fLambda[0] = 0.5 * (dxx + dzz) + TMath::Sqrt( 0.25 * (dxx - dzz) * (dxx - dzz) + dxz * dxz ) ;
474 if(fLambda[0] > 0)
475 fLambda[0] = TMath::Sqrt(fLambda[0]) ;
476 else
477 fLambda[0] = 0;
478
479 fLambda[1] = 0.5 * (dxx + dzz) - TMath::Sqrt( 0.25 * (dxx - dzz) * (dxx - dzz) + dxz * dxz ) ;
480 if(fLambda[1] > 0) //To avoid exception if numerical errors lead to negative lambda.
481 fLambda[1] = TMath::Sqrt(fLambda[1]) ;
482 else
483 fLambda[1]= 0. ;
484 } else {
485 fLambda[0]= 0. ;
486 fLambda[1]= 0. ;
ab48128d 487 }
488}
489
490//______________________________________________________________________________
491void AliEMCALRecPoint::EvalPrimaries(TClonesArray * digits)
492{
493 // Constructs the list of primary particles (tracks) which have contributed to this RecPoint
494
495 AliEMCALDigit * digit ;
496 Int_t * tempo = new Int_t[fMaxTrack] ;
497
498 Int_t index ;
499 for ( index = 0 ; index < GetDigitsMultiplicity() ; index++ ) { // all digits
500 digit = dynamic_cast<AliEMCALDigit *>(digits->At( fDigitsList[index] )) ;
501 Int_t nprimaries = digit->GetNprimary() ;
5c0368b8 502 if ( nprimaries == 0 ) continue ;
ab48128d 503 Int_t * newprimaryarray = new Int_t[nprimaries] ;
504 Int_t ii ;
505 for ( ii = 0 ; ii < nprimaries ; ii++)
506 newprimaryarray[ii] = digit->GetPrimary(ii+1) ;
507
508 Int_t jndex ;
509 for ( jndex = 0 ; jndex < nprimaries ; jndex++ ) { // all primaries in digit
510 if ( fMulTrack > fMaxTrack ) {
f792c312 511 fMulTrack = fMaxTrack ;
9859bfc0 512 Error("GetNprimaries", "increase fMaxTrack ") ;
ab48128d 513 break ;
514 }
515 Int_t newprimary = newprimaryarray[jndex] ;
516 Int_t kndex ;
517 Bool_t already = kFALSE ;
518 for ( kndex = 0 ; kndex < fMulTrack ; kndex++ ) { //check if not already stored
519 if ( newprimary == tempo[kndex] ){
520 already = kTRUE ;
521 break ;
522 }
523 } // end of check
5c0368b8 524 if ( !already && (fMulTrack < fMaxTrack)) { // store it
ab48128d 525 tempo[fMulTrack] = newprimary ;
526 fMulTrack++ ;
527 } // store it
528 } // all primaries in digit
f792c312 529 delete [] newprimaryarray ;
ab48128d 530 } // all digits
531
532
533 fTracksList = new Int_t[fMulTrack] ;
534 for(index = 0; index < fMulTrack; index++)
535 fTracksList[index] = tempo[index] ;
536
f792c312 537 delete [] tempo ;
ab48128d 538
539}
7ee5c5be 540
87cdc3be 541//______________________________________________________________________________
542void AliEMCALRecPoint::EvalParents(TClonesArray * digits)
543{
544 // Constructs the list of parent particles (tracks) which have contributed to this RecPoint
545
546 AliEMCALDigit * digit ;
547 Int_t * tempo = new Int_t[fMaxParent] ;
548
549 Int_t index ;
550 for ( index = 0 ; index < GetDigitsMultiplicity() ; index++ ) { // all digits
551 digit = dynamic_cast<AliEMCALDigit *>(digits->At( fDigitsList[index] )) ;
552 Int_t nparents = digit->GetNiparent() ;
5c0368b8 553 if ( nparents == 0 ) continue ;
87cdc3be 554 Int_t * newparentarray = new Int_t[nparents] ;
555 Int_t ii ;
556 for ( ii = 0 ; ii < nparents ; ii++)
557 newparentarray[ii] = digit->GetIparent(ii+1) ;
558
559 Int_t jndex ;
560 for ( jndex = 0 ; jndex < nparents ; jndex++ ) { // all primaries in digit
561 if ( fMulParent > fMaxParent ) {
562 fMulTrack = - 1 ;
563 Error("GetNiparent", "increase fMaxParent") ;
564 break ;
565 }
566 Int_t newparent = newparentarray[jndex] ;
567 Int_t kndex ;
568 Bool_t already = kFALSE ;
f1d429fd 569 for ( kndex = 0 ; kndex < fMulParent ; kndex++ ) { //check if not already stored
87cdc3be 570 if ( newparent == tempo[kndex] ){
571 already = kTRUE ;
572 break ;
573 }
574 } // end of check
5c0368b8 575 if ( !already && (fMulTrack < fMaxTrack)) { // store it
87cdc3be 576 tempo[fMulParent] = newparent ;
577 fMulParent++ ;
578 } // store it
579 } // all parents in digit
580 delete newparentarray ;
581 } // all digits
582
583
584 fParentsList = new Int_t[fMulParent] ;
585 for(index = 0; index < fMulParent; index++)
586 fParentsList[index] = tempo[index] ;
587
588 delete tempo ;
589
590}
591
ab48128d 592//____________________________________________________________________________
70a93198 593void AliEMCALRecPoint::GetLocalPosition(TVector3 & lpos) const
594{
595 // returns the position of the cluster in the local reference system of ALICE
596 // X = eta, Y = phi, Z = r (a constant for the EMCAL)
597
598 lpos.SetX(fLocPos.X()) ;
599 lpos.SetY(fLocPos.Y()) ;
600 lpos.SetZ(fLocPos.Z()) ;
601}
602
603//____________________________________________________________________________
ab48128d 604void AliEMCALRecPoint::GetGlobalPosition(TVector3 & gpos) const
605{
606 // returns the position of the cluster in the global reference system of ALICE
70a93198 607 // These are now the Cartesian X, Y and Z
608
609 AliEMCALGeometry * geom = (AliEMCALGetter::Instance())->EMCALGeometry();
610 Int_t absid = geom->TowerIndexFromEtaPhi(fLocPos.X(), TMath::RadToDeg()*fLocPos.Y());
611 geom->XYZFromIndex(absid, gpos);
612}
613
614//____________________________________________________________________________
615Float_t AliEMCALRecPoint::GetMaximalEnergy(void) const
616{
617 // Finds the maximum energy in the cluster
ab48128d 618
70a93198 619 Float_t menergy = 0. ;
620
621 Int_t iDigit;
622
623 for(iDigit=0; iDigit<fMulDigit; iDigit++) {
624
625 if(fEnergyList[iDigit] > menergy)
626 menergy = fEnergyList[iDigit] ;
627 }
628 return menergy ;
ab48128d 629}
630
aad8e277 631//____________________________________________________________________________
70a93198 632Int_t AliEMCALRecPoint::GetMultiplicityAtLevel(Float_t H) const
aad8e277 633{
70a93198 634 // Calculates the multiplicity of digits with energy larger than H*energy
635
636 Int_t multipl = 0 ;
637 Int_t iDigit ;
638 for(iDigit=0; iDigit<fMulDigit; iDigit++) {
639
640 if(fEnergyList[iDigit] > H * fAmp)
641 multipl++ ;
642 }
643 return multipl ;
644}
645
646//____________________________________________________________________________
647Int_t AliEMCALRecPoint::GetNumberOfLocalMax(AliEMCALDigit ** maxAt, Float_t * maxAtEnergy,
648 Float_t locMaxCut,TClonesArray * digits) const
649{
650 // Calculates the number of local maxima in the cluster using fLocalMaxCut as the minimum
651 // energy difference between two local maxima
652
653 AliEMCALDigit * digit ;
654 AliEMCALDigit * digitN ;
655
656 Int_t iDigitN ;
657 Int_t iDigit ;
658
659 for(iDigit = 0; iDigit < fMulDigit; iDigit++)
660 maxAt[iDigit] = (AliEMCALDigit*) digits->At(fDigitsList[iDigit]) ;
661
662 for(iDigit = 0 ; iDigit < fMulDigit; iDigit++) {
663 if(maxAt[iDigit]) {
664 digit = maxAt[iDigit] ;
665
666 for(iDigitN = 0; iDigitN < fMulDigit; iDigitN++) {
667 digitN = (AliEMCALDigit *) digits->At(fDigitsList[iDigitN]) ;
668
669 if ( AreNeighbours(digit, digitN) ) {
670 if (fEnergyList[iDigit] > fEnergyList[iDigitN] ) {
671 maxAt[iDigitN] = 0 ;
672 // but may be digit too is not local max ?
673 if(fEnergyList[iDigit] < fEnergyList[iDigitN] + locMaxCut)
674 maxAt[iDigit] = 0 ;
675 }
676 else {
677 maxAt[iDigit] = 0 ;
678 // but may be digitN too is not local max ?
679 if(fEnergyList[iDigit] > fEnergyList[iDigitN] - locMaxCut)
680 maxAt[iDigitN] = 0 ;
681 }
682 } // if Areneighbours
683 } // while digitN
684 } // slot not empty
685 } // while digit
686
687 iDigitN = 0 ;
688 for(iDigit = 0; iDigit < fMulDigit; iDigit++) {
689 if(maxAt[iDigit] ){
690 maxAt[iDigitN] = maxAt[iDigit] ;
691 maxAtEnergy[iDigitN] = fEnergyList[iDigit] ;
692 iDigitN++ ;
693 }
694 }
695 return iDigitN ;
696}
697//____________________________________________________________________________
698void AliEMCALRecPoint::EvalTime(TClonesArray * digits){
699 // time is set to the time of the digit with the maximum energy
700
701 Float_t maxE = 0;
702 Int_t maxAt = 0;
703 for(Int_t idig=0; idig < fMulDigit; idig++){
704 if(fEnergyList[idig] > maxE){
705 maxE = fEnergyList[idig] ;
706 maxAt = idig;
707 }
708 }
709 fTime = ((AliEMCALDigit*) digits->At(fDigitsList[maxAt]))->GetTime() ;
aad8e277 710
aad8e277 711}
ab48128d 712
713//______________________________________________________________________________
714void AliEMCALRecPoint::Paint(Option_t *)
715{
716 // Paint this ALiRecPoint as a TMarker with its current attributes
717
718 TVector3 pos(0.,0.,0.) ;
719 GetLocalPosition(pos) ;
720 Coord_t x = pos.X() ;
721 Coord_t y = pos.Z() ;
722 Color_t markercolor = 1 ;
723 Size_t markersize = 1. ;
724 Style_t markerstyle = 5 ;
725
726 if (!gPad->IsBatch()) {
727 gVirtualX->SetMarkerColor(markercolor) ;
728 gVirtualX->SetMarkerSize (markersize) ;
729 gVirtualX->SetMarkerStyle(markerstyle) ;
730 }
731 gPad->SetAttMarkerPS(markercolor,markerstyle,markersize) ;
732 gPad->PaintPolyMarker(1,&x,&y,"") ;
733}
70a93198 734
735//______________________________________________________________________________
736Float_t AliEMCALRecPoint::EtaToTheta(Float_t arg) const
737{
738 //Converts Theta (Radians) to Eta(Radians)
739 return (2.*TMath::ATan(TMath::Exp(-arg)));
740}
741
742//______________________________________________________________________________
743Float_t AliEMCALRecPoint::ThetaToEta(Float_t arg) const
744{
745 //Converts Eta (Radians) to Theta(Radians)
746 return (-1 * TMath::Log(TMath::Tan(0.5 * arg)));
747}
261b1065 748
749//____________________________________________________________________________
750void AliEMCALRecPoint::Print(Option_t *) const
751{
752 // Print the list of digits belonging to the cluster
753
754 TString message ;
755 message = "AliPHOSEmcRecPoint:\n" ;
756 message += " digits # = " ;
757 Info("Print", message.Data()) ;
758
759 Int_t iDigit;
760 for(iDigit=0; iDigit<fMulDigit; iDigit++)
761 printf(" %d ", fDigitsList[iDigit] ) ;
762
763 Info("Print", " Energies = ") ;
764 for(iDigit=0; iDigit<fMulDigit; iDigit++)
765 printf(" %f ", fEnergyList[iDigit] ) ;
766 printf("\n") ;
767 Info("Print", " Primaries ") ;
768 for(iDigit = 0;iDigit < fMulTrack; iDigit++)
769 printf(" %d ", fTracksList[iDigit]) ;
770 printf("\n") ;
771 message = " Multiplicity = %d" ;
772 message += " Cluster Energy = %f" ;
773 message += " Core energy = %f" ;
774 message += " Core radius = %f" ;
775 message += " Number of primaries %d" ;
776 message += " Stored at position %d" ;
777
778 Info("Print", message.Data(), fMulDigit, fAmp, fCoreEnergy, fCoreRadius, fMulTrack, GetIndexInList() ) ;
779}