inline void G4CurvePoint::Init(G4Curve& c0)
{
  c= &c0;
  notComputed= allFlags;
}

inline G4CurvePoint::G4CurvePoint(G4Curve& c0)
{
  Init(c0);
}

inline G4Curve& G4CurvePoint::GetCurve() const 
{
  return *c;
}

/////////////////////////////////////////////////////////////////////////////

inline void G4CurvePoint::Reset()
{
  notComputed= allFlags;
}

inline void G4CurvePoint::Reset(G4double u0)
{
  u= u0;
  notComputed= pFlag;
}

inline void G4CurvePoint::Reset(const G4Point3D& p0)
{
  p= p0;
  notComputed= uFlag;
}

inline void G4CurvePoint::Reset(G4double u0, const G4Point3D& p0)
{
  u= u0;
  p= p0;
  notComputed= 0;
}

/////////////////////////////////////////////////////////////////////////////

inline G4double G4CurvePoint::GetPPoint()
{
  if (notComputed & uFlag) {
    u= c->GetPPoint(p);
    notComputed &= ~uFlag;
  }
  return u;
}

inline const G4Point3D& G4CurvePoint::GetPoint()
{
  if (notComputed & pFlag) {
    p= c->GetPoint(u);
    notComputed &= ~pFlag;
  }
  return p;
}