[u/mrichter/AliRoot.git] / PHOS / AliPHOSRecParticle.cxx

/**************************************************************************
 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 *                                                                        *
 * Author: The ALICE Off-line Project.                                    *
 * Contributors are mentioned in the code where appropriate.              *
 *                                                                        *
 * Permission to use, copy, modify and distribute this software and its   *
 * documentation strictly for non-commercial purposes is hereby granted   *
 * without fee, provided that the above copyright notice appears in all   *
 * copies and that both the copyright notice and this permission notice   *
 * appear in the supporting documentation. The authors make no claims     *
 * about the suitability of this software for any purpose. It is          *
 * provided "as is" without express or implied warranty.                  *
 **************************************************************************/
/* $Id$ */
//_________________________________________________________________________
//  A Reconstructed Particle in PHOS    
//  To become a general class of AliRoot ?       
//  Why should I put meaningless comments
//  just to satisfy
//  the code checker                 
//       
//*-- Author: Yves Schutz (SUBATECH)


// --- ROOT system ---

// --- Standard library ---


// --- AliRoot header files ---
#include "AliStack.h"
#include "AliPHOSHit.h" 
#include "AliPHOSDigit.h" 
#include "AliPHOSTrackSegment.h" 
#include "AliPHOSEmcRecPoint.h" 
#include "AliPHOSRecParticle.h"
#include "AliPHOSLoader.h" 
#include "AliPHOSGeometry.h" 
#include "AliLog.h"

//____________________________________________________________________________
AliPHOSRecParticle::AliPHOSRecParticle(): 
  fPHOSTrackSegment(0),
  fDebug(kFALSE),
  fPos()
{
  // ctor
  const Int_t nSPECIES = AliPID::kSPECIESN;
  for(Int_t i = 0; i<nSPECIES ; i++)
    fPID[i]=0.;
}


//____________________________________________________________________________
AliPHOSRecParticle::AliPHOSRecParticle(const AliPHOSRecParticle & rp):
  AliPHOSFastRecParticle(rp),
  fPHOSTrackSegment(rp.fPHOSTrackSegment),
  fDebug(kFALSE),
  fPos()
{
  // copy ctor
  fType             = rp.fType ; 
  fIndexInList      = rp.fIndexInList ;

  fPdgCode     = rp.fPdgCode;
  fStatusCode  = rp.fStatusCode;
  fMother[0]   = rp.fMother[0];
  fMother[1]   = rp.fMother[1];
  fDaughter[0] = rp.fDaughter[0];
  fDaughter[1] = rp.fDaughter[1];
  fWeight      = rp.fWeight;
  fCalcMass    = rp.fCalcMass;
  fPx          = rp.fPx;
  fPy          = rp.fPy;
  fPz          = rp.fPz;
  fE           = rp.fE;
  fVx          = rp.fVx;
  fVy          = rp.fVy;
  fVz          = rp.fVz;
  fVt          = rp.fVt;
  fPolarTheta  = rp.fPolarTheta;
  fPolarPhi    = rp.fPolarPhi;
  fParticlePDG = rp.fParticlePDG; 
  const Int_t nSPECIES = AliPID::kSPECIESN;
  for(Int_t i = 0; i<nSPECIES ; i++)
    fPID[i]=rp.fPID[i];
}

//____________________________________________________________________________
Int_t AliPHOSRecParticle::GetNPrimaries() const  
{ 
  return -1;
}

//____________________________________________________________________________
Int_t AliPHOSRecParticle::GetNPrimariesToRecParticles() const  
{ 
  // Get the number of primaries at the origine of the RecParticle
  Int_t rv = 0 ;
  AliRunLoader* rl = AliRunLoader::Instance() ;
  AliPHOSLoader * phosLoader = dynamic_cast<AliPHOSLoader*>(rl->GetLoader("PHOSLoader"));
  Int_t emcRPindex = dynamic_cast<AliPHOSTrackSegment*>(phosLoader->TrackSegments()->At(GetPHOSTSIndex()))->GetEmcIndex();
  dynamic_cast<AliPHOSEmcRecPoint*>(phosLoader->EmcRecPoints()->At(emcRPindex))->GetPrimaries(rv) ; 
  return rv ; 
}

//____________________________________________________________________________
const TParticle * AliPHOSRecParticle::GetPrimary() const  
{
  // Get the primary particle at the origine of the RecParticle and 
  // which has deposited the largest energy in SDigits
  AliRunLoader* rl = AliRunLoader::Instance() ;
  AliPHOSLoader * phosLoader = dynamic_cast<AliPHOSLoader*>(rl->GetLoader("PHOSLoader"));
  rl->GetEvent(rl->GetEventNumber()) ;
  rl->LoadKinematics("READ");
  rl->LoadSDigits("READ");
  
  if(GetNPrimaries() == 0)
    return 0 ;
  if(GetNPrimaries() == 1)
    return GetPrimary(0) ;
  Int_t AbsId = 0;
  Int_t module ;

  // Get PHOS Geometry object
  AliPHOSGeometry *geom;
  if (!(geom = AliPHOSGeometry::GetInstance())) 
        geom = AliPHOSGeometry::GetInstance("IHEP","");
  Double_t x,z ;
//DP to be fixed: Why do we use this method here??? M.B. use RecPoint???
  Double_t vtx[3]={0.,0.,0.} ;
  geom->ImpactOnEmc(vtx,static_cast<double>(Theta()),static_cast<double>(Phi()), module,z,x);
  Int_t amp = 0 ;
  Int_t iPrim=-1 ;
  if(module != 0){
    geom->RelPosToAbsId(module,x,z,AbsId) ;
   TClonesArray * sdigits = phosLoader->SDigits() ;
   AliPHOSDigit * sdig ;
    
   for(Int_t i = 0 ; i < sdigits->GetEntriesFast() ; i++){
     sdig = static_cast<AliPHOSDigit *>(sdigits->At(i)) ;
     if((sdig->GetId() == AbsId)){
       if((sdig->GetAmp() > amp) && (sdig->GetNprimary())){
	 amp = sdig->GetAmp() ;
	 iPrim = sdig->GetPrimary(1) ;
       } 
       // do not scan rest of list
       if(sdig->GetId() > AbsId)
	 continue ; 
     }
   }
  }
  if(iPrim >= 0)
    return rl->Stack()->Particle(iPrim) ;
  else
    return 0 ;
} 
  
//____________________________________________________________________________
Int_t AliPHOSRecParticle::GetPrimaryIndex() const  
{
  // Get the primary track index in TreeK which deposits the most energy
  // in Digits which forms EmcRecPoint, which produces TrackSegment,
  // which the RecParticle is created from


  AliRunLoader* rl = AliRunLoader::Instance() ;
  AliPHOSLoader * phosLoader = dynamic_cast<AliPHOSLoader*>(rl->GetLoader("PHOSLoader"));
  rl->GetEvent(rl->GetEventNumber()) ;
  rl->LoadHits("READ");
  rl->LoadDigits("READ");
  rl->LoadRecPoints("READ");
  rl->LoadTracks("READ");
  
  // Get TrackSegment corresponding to this RecParticle
  const AliPHOSTrackSegment *ts          = phosLoader->TrackSegment(fPHOSTrackSegment);

  // Get EmcRecPoint corresponding to this TrackSegment
  Int_t emcRecPointIndex = ts->GetEmcIndex();

  const AliPHOSEmcRecPoint  *emcRecPoint = phosLoader->EmcRecPoint(emcRecPointIndex);

  // Get the list of digits forming this EmcRecParticle
  Int_t  nDigits   = emcRecPoint->GetDigitsMultiplicity();
  Int_t *digitList = emcRecPoint->GetDigitsList();

  // Find the digit with maximum amplitude
  Int_t maxAmp = 0;
  Int_t bestDigitIndex = -1;
  for (Int_t iDigit=0; iDigit<nDigits; iDigit++) {
    const AliPHOSDigit * digit = phosLoader->Digit(digitList[iDigit]);
    if (digit->GetAmp() > maxAmp) {
      maxAmp = digit->GetAmp();
      bestDigitIndex = iDigit;
    }
  }
  if (bestDigitIndex>-1) {
    const AliPHOSDigit * digit = phosLoader->Digit(digitList[bestDigitIndex]);
    if (digit==0) return -12345;
  }
  
  // Get the list of primary tracks producing this digit
  // and find which track has more track energy.
  //Int_t nPrimary = digit->GetNprimary();
  //TParticle *track = 0;
  //Double_t energyEM     = 0;
  //Double_t energyHadron = 0;
  //Int_t    trackEM      = -1;
  //Int_t    trackHadron  = -1;
  //for (Int_t iPrim=0; iPrim<nPrimary; iPrim++) {
  //  Int_t iPrimary = digit->GetPrimary(iPrim+1);
  //  if (iPrimary == -1 || TMath::Abs(iPrimary)>10000000)
  //    continue ;  //PH 10000000 is the shift of the track 
  //                //PH indexes in the underlying event
  //  track = gime->Primary(iPrimary);
  //  Int_t pdgCode   = track->GetPdgCode();
  //  Double_t energy = track->Energy();
  //  if (pdgCode==22 || TMath::Abs(pdgCode)==11) {
  //    if (energy > energyEM) {
  //	energyEM = energy;
  //	trackEM = iPrimary;
  //      }
  //   }
  //  else {
  //     if (energy > energyHadron) {
  //	energyHadron = energy;
  //	trackHadron = iPrimary;
	//    }
  //  }
  //}
  // Preferences are given to electromagnetic tracks
  //if (trackEM     != -1) return trackEM;     // track is gamma or e+-
  //if (trackHadron != -1) return trackHadron; // track is hadron
  //return -12345;                             // no track found :(


  // Get the list of hits producing this digit,
  // find which hit has deposited more energy 
  // and find the primary track.

  TClonesArray *hits = phosLoader->Hits();
  if (hits==0) return -12345;

  Double_t maxedep  =  0;
  Int_t    maxtrack = -1;
  Int_t    nHits    = hits ->GetEntries();
  Int_t    id       = (phosLoader->Digit(digitList[bestDigitIndex]))->GetId();

  for (Int_t iHit=0; iHit<nHits; iHit++) {
    const AliPHOSHit * hit = phosLoader->Hit(iHit);
    if(hit->GetId() == id){
      Double_t edep  = hit->GetEnergy();
      Int_t    track = hit->GetPrimary();
      if(edep > maxedep){
	maxedep  = edep;
	maxtrack = track;
      }
    }
  }

  if (maxtrack != -1) return maxtrack; // track is hadron
  return -12345;                       // no track found :(
}

//____________________________________________________________________________
const TParticle * AliPHOSRecParticle::GetPrimary(Int_t index) const  
{
  // Get one of the primary particles at the origine of the RecParticle
  if ( index > GetNPrimariesToRecParticles() ) { 
    if (fDebug) 
      Warning("GetPrimary", "AliPHOSRecParticle::GetPrimary -> %d is larger that the number of primaries %d", 
	      index, GetNPrimaries()) ;
    return 0 ; 
  } 
  else { 
    Int_t dummy ; 
    AliRunLoader* rl = AliRunLoader::Instance() ;
    AliPHOSLoader * phosLoader = dynamic_cast<AliPHOSLoader*>(rl->GetLoader("PHOSLoader"));

    Int_t emcRPindex = dynamic_cast<AliPHOSTrackSegment*>(phosLoader->TrackSegments()->At(GetPHOSTSIndex()))->GetEmcIndex();
    Int_t primaryindex = dynamic_cast<AliPHOSEmcRecPoint*>(phosLoader->EmcRecPoints()->At(emcRPindex))->GetPrimaries(dummy)[index] ; 
    return rl->Stack()->Particle(primaryindex) ;
   } 
  //  return 0 ; 
}

//____________________________________________________________________________
void AliPHOSRecParticle::SetPID(Int_t type, Float_t weight)
{
  // Set the probability densities that this reconstructed particle
  // has a type of i:
  // i       particle types
  // ----------------------
  // 0       electron
  // 1       muon
  // 2       pi+-
  // 3       K+-
  // 4       p/pbar
  // 5       photon
  // 6       pi0 at high pt
  // 7       neutron
  // 8       K0L
  // 9       Conversion electron
  
  fPID[type] = weight ; 
}
Commit	Line	Data
6ad0bfa0	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	**************************************************************************/
b2a60966	15	/* $Id$ */
6ad0bfa0	16	//_________________________________________________________________________
b2a60966	17	// A Reconstructed Particle in PHOS
2f04ed65	18	// To become a general class of AliRoot ?
	19	// Why should I put meaningless comments
	20	// just to satisfy
	21	// the code checker
b2a60966	22	//
	23	//*-- Author: Yves Schutz (SUBATECH)
	24
6ad0bfa0	25
	26	// --- ROOT system ---
	27
	28	// --- Standard library ---
	29
ed4205d8	30
6ad0bfa0	31	// --- AliRoot header files ---
7fb9892d	32	#include "AliStack.h"
	33	#include "AliPHOSHit.h"
	34	#include "AliPHOSDigit.h"
	35	#include "AliPHOSTrackSegment.h"
	36	#include "AliPHOSEmcRecPoint.h"
6ad0bfa0	37	#include "AliPHOSRecParticle.h"
7fb9892d	38	#include "AliPHOSLoader.h"
c81ced2d	39	#include "AliPHOSGeometry.h"
1212b8da	40	#include "AliLog.h"
6ad0bfa0	41
0272607d	42	//____________________________________________________________________________
43fbaae1	43	AliPHOSRecParticle::AliPHOSRecParticle():
	44	fPHOSTrackSegment(0),
	45	fDebug(kFALSE),
	46	fPos()
0272607d	47	{
0272607d	48	// ctor
304864ab	49	const Int_t nSPECIES = AliPID::kSPECIESN;
88340ded	50	for(Int_t i = 0; i<nSPECIES ; i++)
0272607d	51	fPID[i]=0.;
0272607d	52	}
6ad0bfa0	53
6ad0bfa0	54
a73f33f0	55	//____________________________________________________________________________
43fbaae1	56	AliPHOSRecParticle::AliPHOSRecParticle(const AliPHOSRecParticle & rp):
	57	AliPHOSFastRecParticle(rp),
	58	fPHOSTrackSegment(rp.fPHOSTrackSegment),
	59	fDebug(kFALSE),
	60	fPos()
a73f33f0	61	{
b2a60966	62	// copy ctor
a73f33f0	63	fType = rp.fType ;
83974468	64	fIndexInList = rp.fIndexInList ;
b2a60966	65
cafda784	66	fPdgCode = rp.fPdgCode;
	67	fStatusCode = rp.fStatusCode;
	68	fMother[0] = rp.fMother[0];
	69	fMother[1] = rp.fMother[1];
	70	fDaughter[0] = rp.fDaughter[0];
	71	fDaughter[1] = rp.fDaughter[1];
	72	fWeight = rp.fWeight;
	73	fCalcMass = rp.fCalcMass;
	74	fPx = rp.fPx;
	75	fPy = rp.fPy;
	76	fPz = rp.fPz;
	77	fE = rp.fE;
	78	fVx = rp.fVx;
	79	fVy = rp.fVy;
	80	fVz = rp.fVz;
	81	fVt = rp.fVt;
	82	fPolarTheta = rp.fPolarTheta;
	83	fPolarPhi = rp.fPolarPhi;
	84	fParticlePDG = rp.fParticlePDG;
304864ab	85	const Int_t nSPECIES = AliPID::kSPECIESN;
88340ded	86	for(Int_t i = 0; i<nSPECIES ; i++)
0272607d	87	fPID[i]=rp.fPID[i];
b2a60966	88	}
83974468	89
8f3968d8	90	//____________________________________________________________________________
17323043	91	Int_t AliPHOSRecParticle::GetNPrimaries() const
88cb7938	92	{
88cb7938	93	return -1;
a278df55	94	}
	95
	96	//____________________________________________________________________________
17323043	97	Int_t AliPHOSRecParticle::GetNPrimariesToRecParticles() const
8f3968d8	98	{
e957fea8	99	// Get the number of primaries at the origine of the RecParticle
8f3968d8	100	Int_t rv = 0 ;
33c3c91a	101	AliRunLoader* rl = AliRunLoader::Instance() ;
7fb9892d	102	AliPHOSLoader * phosLoader = dynamic_cast<AliPHOSLoader*>(rl->GetLoader("PHOSLoader"));
	103	Int_t emcRPindex = dynamic_cast<AliPHOSTrackSegment*>(phosLoader->TrackSegments()->At(GetPHOSTSIndex()))->GetEmcIndex();
	104	dynamic_cast<AliPHOSEmcRecPoint*>(phosLoader->EmcRecPoints()->At(emcRPindex))->GetPrimaries(rv) ;
8f3968d8	105	return rv ;
8f3968d8	106	}
83974468	107
c81ced2d	108	//____________________________________________________________________________
	109	const TParticle * AliPHOSRecParticle::GetPrimary() const
	110	{
	111	// Get the primary particle at the origine of the RecParticle and
	112	// which has deposited the largest energy in SDigits
33c3c91a	113	AliRunLoader* rl = AliRunLoader::Instance() ;
7fb9892d	114	AliPHOSLoader * phosLoader = dynamic_cast<AliPHOSLoader*>(rl->GetLoader("PHOSLoader"));
	115	rl->GetEvent(rl->GetEventNumber()) ;
	116	rl->LoadKinematics("READ");
	117	rl->LoadSDigits("READ");
	118
c81ced2d	119	if(GetNPrimaries() == 0)
	120	return 0 ;
	121	if(GetNPrimaries() == 1)
	122	return GetPrimary(0) ;
	123	Int_t AbsId = 0;
	124	Int_t module ;
6c8cd883	125
	126	// Get PHOS Geometry object
	127	AliPHOSGeometry *geom;
	128	if (!(geom = AliPHOSGeometry::GetInstance()))
	129	geom = AliPHOSGeometry::GetInstance("IHEP","");
	130	Double_t x,z ;
5a9ecaeb	131	//DP to be fixed: Why do we use this method here??? M.B. use RecPoint???
	132	Double_t vtx[3]={0.,0.,0.} ;
	133	geom->ImpactOnEmc(vtx,static_cast<double>(Theta()),static_cast<double>(Phi()), module,z,x);
c81ced2d	134	Int_t amp = 0 ;
	135	Int_t iPrim=-1 ;
	136	if(module != 0){
	137	geom->RelPosToAbsId(module,x,z,AbsId) ;
7fb9892d	138	TClonesArray * sdigits = phosLoader->SDigits() ;
c81ced2d	139	AliPHOSDigit * sdig ;
	140
	141	for(Int_t i = 0 ; i < sdigits->GetEntriesFast() ; i++){
	142	sdig = static_cast<AliPHOSDigit *>(sdigits->At(i)) ;
	143	if((sdig->GetId() == AbsId)){
	144	if((sdig->GetAmp() > amp) && (sdig->GetNprimary())){
	145	amp = sdig->GetAmp() ;
	146	iPrim = sdig->GetPrimary(1) ;
	147	}
	148	// do not scan rest of list
	149	if(sdig->GetId() > AbsId)
	150	continue ;
	151	}
	152	}
	153	}
	154	if(iPrim >= 0)
7fb9892d	155	return rl->Stack()->Particle(iPrim) ;
c81ced2d	156	else
	157	return 0 ;
	158	}
	159
09286392	160	//____________________________________________________________________________
eb0b1051	161	Int_t AliPHOSRecParticle::GetPrimaryIndex() const
09286392	162	{
	163	// Get the primary track index in TreeK which deposits the most energy
	164	// in Digits which forms EmcRecPoint, which produces TrackSegment,
	165	// which the RecParticle is created from
	166
1212b8da	167
33c3c91a	168	AliRunLoader* rl = AliRunLoader::Instance() ;
7fb9892d	169	AliPHOSLoader * phosLoader = dynamic_cast<AliPHOSLoader*>(rl->GetLoader("PHOSLoader"));
	170	rl->GetEvent(rl->GetEventNumber()) ;
	171	rl->LoadHits("READ");
	172	rl->LoadDigits("READ");
	173	rl->LoadRecPoints("READ");
	174	rl->LoadTracks("READ");
1212b8da	175
09286392	176	// Get TrackSegment corresponding to this RecParticle
7fb9892d	177	const AliPHOSTrackSegment *ts = phosLoader->TrackSegment(fPHOSTrackSegment);
09286392	178
	179	// Get EmcRecPoint corresponding to this TrackSegment
	180	Int_t emcRecPointIndex = ts->GetEmcIndex();
1212b8da	181
7fb9892d	182	const AliPHOSEmcRecPoint *emcRecPoint = phosLoader->EmcRecPoint(emcRecPointIndex);
09286392	183
	184	// Get the list of digits forming this EmcRecParticle
	185	Int_t nDigits = emcRecPoint->GetDigitsMultiplicity();
	186	Int_t *digitList = emcRecPoint->GetDigitsList();
e4ca05c3	187
09286392	188	// Find the digit with maximum amplitude
09286392	189	Int_t maxAmp = 0;
	190	Int_t bestDigitIndex = -1;
	191	for (Int_t iDigit=0; iDigit<nDigits; iDigit++) {
7fb9892d	192	const AliPHOSDigit * digit = phosLoader->Digit(digitList[iDigit]);
09286392	193	if (digit->GetAmp() > maxAmp) {
	194	maxAmp = digit->GetAmp();
	195	bestDigitIndex = iDigit;
	196	}
	197	}
7fb9892d	198	if (bestDigitIndex>-1) {
	199	const AliPHOSDigit * digit = phosLoader->Digit(digitList[bestDigitIndex]);
	200	if (digit==0) return -12345;
	201	}
c48a7283	202
09286392	203	// Get the list of primary tracks producing this digit
09286392	204	// and find which track has more track energy.
c48a7283	205	//Int_t nPrimary = digit->GetNprimary();
	206	//TParticle *track = 0;
	207	//Double_t energyEM = 0;
	208	//Double_t energyHadron = 0;
	209	//Int_t trackEM = -1;
	210	//Int_t trackHadron = -1;
	211	//for (Int_t iPrim=0; iPrim<nPrimary; iPrim++) {
	212	// Int_t iPrimary = digit->GetPrimary(iPrim+1);
	213	// if (iPrimary == -1 \|\| TMath::Abs(iPrimary)>10000000)
	214	// continue ; //PH 10000000 is the shift of the track
	215	// //PH indexes in the underlying event
	216	// track = gime->Primary(iPrimary);
	217	// Int_t pdgCode = track->GetPdgCode();
	218	// Double_t energy = track->Energy();
	219	// if (pdgCode==22 \|\| TMath::Abs(pdgCode)==11) {
	220	// if (energy > energyEM) {
	221	// energyEM = energy;
	222	// trackEM = iPrimary;
	223	// }
	224	// }
	225	// else {
	226	// if (energy > energyHadron) {
	227	// energyHadron = energy;
	228	// trackHadron = iPrimary;
	229	// }
	230	// }
	231	//}
	232	// Preferences are given to electromagnetic tracks
	233	//if (trackEM != -1) return trackEM; // track is gamma or e+-
	234	//if (trackHadron != -1) return trackHadron; // track is hadron
	235	//return -12345; // no track found :(
	236
	237
	238	// Get the list of hits producing this digit,
	239	// find which hit has deposited more energy
	240	// and find the primary track.
	241
7fb9892d	242	TClonesArray *hits = phosLoader->Hits();
25ed816e	243	if (hits==0) return -12345;
25ed816e	244
c48a7283	245	Double_t maxedep = 0;
	246	Int_t maxtrack = -1;
	247	Int_t nHits = hits ->GetEntries();
7fb9892d	248	Int_t id = (phosLoader->Digit(digitList[bestDigitIndex]))->GetId();
c48a7283	249
c48a7283	250	for (Int_t iHit=0; iHit<nHits; iHit++) {
7fb9892d	251	const AliPHOSHit * hit = phosLoader->Hit(iHit);
c48a7283	252	if(hit->GetId() == id){
	253	Double_t edep = hit->GetEnergy();
	254	Int_t track = hit->GetPrimary();
	255	if(edep > maxedep){
	256	maxedep = edep;
	257	maxtrack = track;
09286392	258	}
	259	}
	260	}
c48a7283	261
	262	if (maxtrack != -1) return maxtrack; // track is hadron
	263	return -12345; // no track found :(
09286392	264	}
09286392	265
8f3968d8	266	//____________________________________________________________________________
	267	const TParticle * AliPHOSRecParticle::GetPrimary(Int_t index) const
	268	{
c81ced2d	269	// Get one of the primary particles at the origine of the RecParticle
a278df55	270	if ( index > GetNPrimariesToRecParticles() ) {
51d189f4	271	if (fDebug)
88cb7938	272	Warning("GetPrimary", "AliPHOSRecParticle::GetPrimary -> %d is larger that the number of primaries %d",
	273	index, GetNPrimaries()) ;
	274	return 0 ;
51d189f4	275	}
88cb7938	276	else {
88cb7938	277	Int_t dummy ;
33c3c91a	278	AliRunLoader* rl = AliRunLoader::Instance() ;
7fb9892d	279	AliPHOSLoader * phosLoader = dynamic_cast<AliPHOSLoader*>(rl->GetLoader("PHOSLoader"));
88cb7938	280
7fb9892d	281	Int_t emcRPindex = dynamic_cast<AliPHOSTrackSegment*>(phosLoader->TrackSegments()->At(GetPHOSTSIndex()))->GetEmcIndex();
	282	Int_t primaryindex = dynamic_cast<AliPHOSEmcRecPoint*>(phosLoader->EmcRecPoints()->At(emcRPindex))->GetPrimaries(dummy)[index] ;
	283	return rl->Stack()->Particle(primaryindex) ;
88cb7938	284	}
fc7e2f43	285	// return 0 ;
8f3968d8	286	}
948a4b24	287
06e774ed	288	//____________________________________________________________________________
85c60a8e	289	void AliPHOSRecParticle::SetPID(Int_t type, Float_t weight)
06e774ed	290	{
cc1fe362	291	// Set the probability densities that this reconstructed particle
06e774ed	292	// has a type of i:
	293	// i particle types
	294	// ----------------------
	295	// 0 electron
	296	// 1 muon
	297	// 2 pi+-
	298	// 3 K+-
	299	// 4 p/pbar
	300	// 5 photon
	301	// 6 pi0 at high pt
	302	// 7 neutron
	303	// 8 K0L
cc1fe362	304	// 9 Conversion electron
	305
	306	fPID[type] = weight ;
06e774ed	307	}