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Commit | Line | Data |
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1b446896 | 1 | #include "AliHBTEvent.h" |
2 | #include "AliHBTParticle.h" | |
3 | ||
4 | ClassImp(AliHBTEvent) | |
5 | ||
6 | const UInt_t AliHBTEvent::fgkInitEventSize = 10000; | |
7 | ||
8 | ||
9 | ||
10 | /**************************************************************************/ | |
11 | ||
12 | AliHBTEvent::AliHBTEvent() | |
13 | { | |
14 | if(fgkInitEventSize<1) | |
15 | { | |
16 | Fatal("AliHBTEvent::AliHBTEvent()", | |
17 | "fgkInitEventSize has a stiupid value (%d). Change it to positive number and recompile", | |
18 | fgkInitEventSize); | |
19 | ||
20 | } | |
21 | fSize=fgkInitEventSize; | |
22 | fParticles = new AliHBTParticle* [fSize]; | |
23 | fNParticles = 0; | |
24 | } | |
25 | /**************************************************************************/ | |
26 | ||
27 | AliHBTEvent::~AliHBTEvent() | |
28 | { | |
29 | this->Reset();//delete all particles | |
30 | if(fParticles) | |
31 | { | |
32 | delete [] fParticles; //and delete array itself | |
33 | } | |
34 | fParticles = 0x0; | |
35 | } | |
36 | /**************************************************************************/ | |
37 | void AliHBTEvent::Reset() | |
38 | { | |
39 | //deletes all particles from the event | |
40 | if(fParticles) | |
41 | { | |
42 | for(Int_t i =0; i<fNParticles; i++) | |
43 | delete fParticles[i]; | |
44 | } | |
45 | fNParticles = 0; | |
46 | } | |
47 | ||
48 | AliHBTParticle* AliHBTEvent::GetParticleSafely(Int_t n) | |
49 | { | |
50 | if( (n<0) || (fNParticles<=n) ) return 0x0; | |
51 | else return fParticles[n]; | |
52 | ||
53 | } | |
54 | /**************************************************************************/ | |
55 | ||
56 | void AliHBTEvent:: AddParticle(AliHBTParticle* hbtpart) | |
57 | { | |
58 | //Adds new perticle to the event | |
59 | if ( fNParticles+1 >= fSize) Expand(); //if there is no space in array, expand it | |
60 | fParticles[fNParticles++] = hbtpart; //add a pointer | |
61 | } | |
62 | ||
63 | /**************************************************************************/ | |
64 | void AliHBTEvent::AddParticle(TParticle* part) | |
65 | { | |
66 | AddParticle( new AliHBTParticle(*part) ); | |
67 | } | |
68 | /**************************************************************************/ | |
69 | void AliHBTEvent:: | |
70 | AddParticle(Int_t pdg, Double_t px, Double_t py, Double_t pz, Double_t etot, | |
71 | Double_t vx, Double_t vy, Double_t vz, Double_t time) | |
72 | { | |
73 | AddParticle(new AliHBTParticle(pdg,px,py,pz,etot,vx,vy,vz,time) ); | |
74 | } | |
75 | /**************************************************************************/ | |
76 | ||
77 | void AliHBTEvent::Expand() | |
78 | { | |
79 | //expands the array with pointers to particles | |
80 | //about the size defined in fgkInitEventSize | |
81 | ||
82 | fSize+=fgkInitEventSize; | |
83 | AliHBTParticle** tmpParticles = new AliHBTParticle* [fSize]; //create new array of pointers | |
84 | //check if we got memory / if not Abort | |
85 | if (!tmpParticles) Fatal("AliHBTEvent::Expand()","No more space in memory"); | |
86 | ||
87 | ||
88 | for(Int_t i = 0; i<fNParticles ;i++) | |
89 | //copy pointers to the new array | |
90 | { | |
91 | tmpParticles[i] = fParticles[i]; | |
92 | } | |
93 | delete [] fParticles; //delete old array | |
94 | fParticles = tmpParticles; //copy new pointer to the array of pointers to particles | |
95 | ||
96 | } | |
97 | ||
98 | ||
99 |