Int_t PropagateTo(Double_t xr,Double_t x0=28.94,Double_t rho=0.9e-3);
Int_t Update(const AliCluster* c, Double_t chi2, UInt_t i);
void ResetCovariance();
+ void ResetClusters() {SetNumberOfClusters(0); SetChi2(0.);}
void UpdatePoints();//update points
Float_t* GetPoints() {return fPoints;}
//