Bool_t GetCovarianceXYZPxPyPz(Double_t cv[21]) const;
Bool_t GetPxPyPzAt(Double_t x, Double_t b, Double_t p[3]) const;
Bool_t GetXYZAt(Double_t x, Double_t b, Double_t r[3]) const;
+ Double_t GetParameterAtRadius(Double_t r, Double_t bz, Int_t parType) const;
+
Bool_t GetYAt(Double_t x, Double_t b, Double_t &y) const;
Bool_t GetZAt(Double_t x, Double_t b, Double_t &z) const;
void Print(Option_t* option = "") const;