void ConstrainHelixFitCurv(Int_t q=0,Double_t crv=-1,Double_t crverr=-1);
void RemoveHelixFitConstraint();
void SetVertexConstraint(const AliESDVertex* vtx);
+ Bool_t IsVertexSet() const {return fVertexSet;}
void RemoveVertexConstraint() {fVertexSet = kFALSE;}
+ void SetVertexSet(Bool_t v) {fVertexSet = v;}
Double_t GetHelixContraintCharge() const {return fConstrCharge;}
Double_t GetHelixContraintPT() const {return fConstrPT;}
Double_t GetHelixContraintPTErr() const {return fConstrPTErr;}