STEER/AliAODMCParticle.cxx

   1 /**************************************************************************
   2  * Copyright(c) 1998-2007, 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
  16
  17 //-------------------------------------------------------------------------
  18 //     Realisation of AliVParticle for MC Particles
  19 //     Basically a stripped down AliMCParicle / TParticle
  20 //     with minimum information on MC tracks
  21 //     Author: Christian Klein-Bösing, CERN
  22 //-------------------------------------------------------------------------
  23
  24
  25 #include "AliAODMCParticle.h"
  26 #include "AliAODEvent.h"
  27
  28 #include "TDatabasePDG.h"
  29 #include "TParticle.h"
  30 #include "TClonesArray.h"
  31
  32
  33 ClassImp(AliAODMCParticle)
  34
  35 TString AliAODMCParticle::fgkStdBranchName("mcparticles");
  36
  37 AliAODMCParticle::AliAODMCParticle():
  38 AliVParticle(),
  39   fPdgCode(0),
  40   fFlag(0),
  41   fLabel(0),
  42   fMother(0),
  43   fPx(0),
  44   fPy(0),
  45   fPz(0),
  46   fE(0),
  47   fVx(0),
  48   fVy(0),
  49   fVz(0),
  50   fVt(0)
  51 {
  52   // Default Constructor
  53   fDaughter[0] =   fDaughter[1] = 0;
  54 }
  55
  56
  57 AliAODMCParticle::AliAODMCParticle(AliMCParticle* mcpart, Int_t label,Int_t flag):
  58     AliVParticle(),
  59     fPdgCode(mcpart->Particle()->GetPdgCode()),
  60     fFlag(flag),
  61     fLabel(label),
  62     fMother(mcpart->GetMother()),
  63     fPx(mcpart->Particle()->Px()),
  64     fPy(mcpart->Particle()->Py()),
  65     fPz(mcpart->Particle()->Pz()),
  66     fE(mcpart->Particle()->Energy()),
  67     fVx(mcpart->Particle()->Vx()),
  68     fVy(mcpart->Particle()->Vy()),
  69     fVz(mcpart->Particle()->Vz()),
  70     fVt(mcpart->Particle()->T())
  71 {
  72   fDaughter[0] =  mcpart->GetFirstDaughter();
  73   fDaughter[1] =  mcpart->GetLastDaughter();
  74   // Set unique id
  75   TObject::SetUniqueID(mcpart->Particle()->GetUniqueID());
  76 }
  77
  78
  79 AliAODMCParticle::AliAODMCParticle(const AliAODMCParticle& mcPart) :
  80     AliVParticle(mcPart),
  81     fPdgCode(mcPart.fPdgCode),
  82     fFlag(mcPart.fFlag),
  83     fLabel(mcPart.fLabel),
  84     fMother(mcPart.fMother),
  85     fPx(mcPart.fPx),
  86     fPy(mcPart.fPy),
  87     fPz(mcPart.fPz),
  88     fE(mcPart.fE),
  89     fVx(mcPart.fVx),
  90     fVy(mcPart.fVy),
  91     fVz(mcPart.fVz),
  92     fVt(mcPart.fVt)
  93 {
  94   // Copy constructor
  95   fDaughter[0] = mcPart.fDaughter[0];
  96   fDaughter[1] = mcPart.fDaughter[1];
  97
  98 }
  99
 100 AliAODMCParticle& AliAODMCParticle::operator=(const AliAODMCParticle& mcPart)
 101 {
 102
 103   if (this!=&mcPart) {
 104     AliVParticle::operator=(mcPart);
 105     fPdgCode    = mcPart.fPdgCode;
 106     fFlag       = mcPart.fFlag;
 107     fLabel      = mcPart.fLabel;
 108     fMother     = mcPart.fMother;
 109     fPx         = mcPart.fPx;
 110     fPy         = mcPart.fPy;
 111     fPz         = mcPart.fPz;
 112     fE          = mcPart.fE;
 113     fVx         = mcPart.fVx;
 114     fVy         = mcPart.fVy;
 115     fVz         = mcPart.fVz;
 116     fVt         = mcPart.fVt;
 117     fDaughter[0] = mcPart.fDaughter[0];
 118     fDaughter[1] = mcPart.fDaughter[1];
 119   }
 120
 121   return *this;
 122
 123 }
 124
 125 Double_t AliAODMCParticle::M()         const
 126 {
 127     TParticlePDG* pdg =  TDatabasePDG::Instance()->GetParticle(fPdgCode);
 128     if (pdg) {
 129         return (pdg->Mass());
 130     } else {
 131         return GetCalcMass();
 132     }
 133 }
 134
 135
 136 Short_t AliAODMCParticle::Charge()     const
 137 {
 138     TParticlePDG* pdg =  TDatabasePDG::Instance()->GetParticle(fPdgCode);
 139     if (pdg) {
 140         return (Short_t (pdg->Charge()));
 141     } else {
 142         return -99;
 143     }
 144 }
 145
 146 void AliAODMCParticle::Print(const Option_t */*opt*/) const {
 147   if(TDatabasePDG::Instance()->GetParticle(fPdgCode)){
 148     Printf(">>> PDG (%d) : %s",fPdgCode,TDatabasePDG::Instance()->GetParticle(fPdgCode)->GetName());
 149   }
 150   else{
 151     Printf(">>> PDG (%d) : %s",fPdgCode,"Unknown");
 152   }
 153   Printf(">>  P(%3.3f,%3.3f,%3.3f) V((%3.3f,%3.3f,%3.3f,%3.3f)",fPx,fPy,fPz,fVx,fVy,fVz,fVt);
 154   Printf(">   Mother %d, First Daughter %d Last Daughter %d Process %d",fMother,fDaughter[0],fDaughter[1],TObject::GetUniqueID());
 155 }