/* $Id$ */
#include "TObject.h"
+#include "TMath.h"
class AliTrackReference : public TObject {
public:
AliTrackReference();
virtual ~AliTrackReference() {}
virtual Int_t GetTrack() const {return fTrack;}
+ virtual Int_t Label() const {return fTrack;}
virtual void SetTrack(Int_t track) {fTrack=track;}
+ virtual void SetLabel(Int_t track) {fTrack=track;}
virtual void SetLength(Float_t length){fLength=length;}
- virtual Float_t GetLength() const {return fLength;}
+ virtual Float_t GetLength(){return fLength;}
virtual Float_t X() const {return fX;}
virtual Float_t Y() const {return fY;}
virtual Float_t Z() const {return fZ;}
+ virtual Float_t R() const {return TMath::Sqrt(fX*fX+fY*fY);}
virtual Float_t Px() const {return fPx;}
virtual Float_t Py() const {return fPy;}
virtual Float_t Pz() const {return fPz;}
+ virtual Float_t Pt() const {return TMath::Sqrt(fPx*fPx+fPy*fPy);}
+ virtual Float_t Phi() const {return TMath::Pi()+TMath::ATan2(-fPy,-fPx);}
+ virtual Float_t Theta() const {return (fZ==0)?TMath::Pi()/2:TMath::ACos(fZ/TMath::Sqrt(fX*fX+fY*fY+fZ*fZ)); }
virtual void SetPosition(Float_t x, Float_t y, Float_t z){fX=x; fY=y; fZ=z;}
virtual void SetMomentum(Float_t px, Float_t py, Float_t pz){fPx=px; fPy=py; fPz=pz;}
-
+
protected:
Int_t fTrack; // Track number
Float_t fX; // X reference position of the track