virtual Int_t GetMCLabel() const {return GetTrack(0);}
/// Return radius
- Float_t GetRadius(Int_t i) {return TMath::Sqrt(fX[i]*fX[i]+fY[i]*fY[i]);}
+ Float_t GetRadius(Int_t i) const {return TMath::Sqrt(fX[i]*fX[i]+fY[i]*fY[i]);}
/// Return true as the function Compare() is implemented
Bool_t IsSortable() const {return kTRUE;}
Int_t Compare(const TObject *obj) const;