| 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 | |
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