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d7d7e825 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
332f1f44 | 4 | * Author: Ana Marin, Kathrin Koch, Kenneth Aamodt, Svein Lindal * |
d7d7e825 | 5 | * Version 1.0 * |
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 | // Class containing the aod information we need | |
19 | //--------------------------------------------- | |
20 | //////////////////////////////////////////////// | |
21 | ||
22 | #include "AliGammaConversionAODObject.h" | |
4a6157dc | 23 | //#include "AliAODv0.h" |
d7d7e825 | 24 | #include "AliStack.h" |
25 | #include "AliESDEvent.h" | |
4a6157dc | 26 | //#include "AliESDtrack.h" |
d7d7e825 | 27 | #include "TParticle.h" |
28 | ||
4a6157dc | 29 | class AliAODv0; |
30 | class AliESDtrack; | |
31 | ||
d7d7e825 | 32 | using namespace std; |
33 | ||
34 | ClassImp(AliGammaConversionAODObject) | |
35 | ||
36 | ||
37 | ||
38 | AliGammaConversionAODObject::AliGammaConversionAODObject() : | |
39 | TObject(), | |
40 | fPx(0), | |
41 | fPy(0), | |
42 | fPz(0), | |
04bf4381 | 43 | fE(0), |
d7d7e825 | 44 | fLabel1(-1), |
45 | fLabel2(-1), | |
332f1f44 | 46 | fChi2(0), |
04bf4381 | 47 | fIMass(0), |
48 | fTagged(kFALSE), | |
d7d7e825 | 49 | fMCStack(NULL), |
50 | fESDEvent(NULL) | |
51 | { | |
332f1f44 | 52 | //Default constructor |
d7d7e825 | 53 | } |
54 | ||
55 | ||
56 | AliGammaConversionAODObject::AliGammaConversionAODObject(const AliGammaConversionAODObject & original) : | |
57 | TObject(original), | |
58 | fPx(original.fPx), | |
59 | fPy(original.fPy), | |
60 | fPz(original.fPz), | |
04bf4381 | 61 | fE(original.fE), |
d7d7e825 | 62 | fLabel1(original.fLabel1), |
63 | fLabel2(original.fLabel2), | |
332f1f44 | 64 | fChi2(original.fChi2), |
04bf4381 | 65 | fIMass(original.fIMass), |
66 | fTagged(original.fTagged), | |
d7d7e825 | 67 | fMCStack(original.fMCStack), |
68 | fESDEvent(original.fESDEvent) | |
69 | { | |
332f1f44 | 70 | //Copy constructor |
d7d7e825 | 71 | } |
72 | ||
73 | ||
74 | AliGammaConversionAODObject & AliGammaConversionAODObject::operator = (const AliGammaConversionAODObject & /*source*/) | |
75 | { | |
76 | // assignment operator | |
77 | return *this; | |
78 | } | |
79 | ||
80 | Int_t AliGammaConversionAODObject::GetGammaMCLabel() const{ | |
81 | // returns the MC label of the gamma (if both electrons have the same mother) | |
82 | Int_t iResult = -1; | |
83 | if(fMCStack != NULL){ | |
84 | Int_t mcLabel1= GetElectronMCLabel1(); | |
85 | Int_t mcLabel2= GetElectronMCLabel2(); | |
86 | if(mcLabel1>=0 && mcLabel2>=0){ | |
87 | TParticle *electron1 = fMCStack->Particle(mcLabel1); | |
88 | TParticle *electron2 = fMCStack->Particle(mcLabel2); | |
89 | if(electron1->GetMother(0) == electron2->GetMother(0)){ | |
90 | iResult = electron1->GetMother(0); | |
91 | } | |
92 | } | |
93 | } | |
94 | return iResult; | |
95 | } | |
96 | ||
97 | Int_t AliGammaConversionAODObject::GetElectronUniqueID() const{ | |
98 | // returns the unique id of the electrons if they have the same mother and unique id | |
99 | Int_t iResult = -1; | |
100 | if(fMCStack != NULL){ | |
101 | Int_t mcLabel1= GetElectronMCLabel1(); | |
102 | Int_t mcLabel2= GetElectronMCLabel2(); | |
103 | if(mcLabel1>=0 && mcLabel2>=0){ | |
104 | TParticle *electron1 = fMCStack->Particle(mcLabel1); | |
105 | TParticle *electron2 = fMCStack->Particle(mcLabel2); | |
106 | if(electron1->GetMother(0) == electron2->GetMother(0)){ | |
107 | if(electron1->GetUniqueID() == electron2->GetUniqueID()){ | |
108 | iResult = (Int_t)electron1->GetUniqueID(); | |
109 | } | |
110 | } | |
111 | } | |
112 | } | |
113 | return iResult; | |
114 | } | |
115 | ||
116 | Int_t AliGammaConversionAODObject::GetElectronMCLabel1() const{ | |
117 | //returns the MC label of the first electron | |
118 | Int_t iResult=-1; | |
119 | if(fESDEvent != NULL){ | |
120 | if(fLabel1>=0){ | |
121 | iResult = (fESDEvent->GetTrack(fLabel1))->GetLabel(); | |
122 | } | |
123 | } | |
124 | return iResult; | |
125 | } | |
126 | ||
127 | Int_t AliGammaConversionAODObject::GetElectronMCLabel2() const{ | |
128 | //returns the MC label of the first electron | |
129 | Int_t iResult=-1; | |
130 | if(fESDEvent != NULL){ | |
131 | if(fLabel2>=0){ | |
132 | iResult = (fESDEvent->GetTrack(fLabel2))->GetLabel(); | |
133 | } | |
134 | } | |
135 | return iResult; | |
136 | } |