//! compute Triedrhon and derivative Trihedron on curve
//! at parameter <Param>
- //! Warning : It used only for C1 or C2 aproximation
+ //! Warning : It used only for C1 or C2 approximation
Standard_EXPORT virtual Standard_Boolean D1 (const Standard_Real Param, gp_Vec& Tangent, gp_Vec& DTangent, gp_Vec& Normal, gp_Vec& DNormal, gp_Vec& BiNormal, gp_Vec& DBiNormal) Standard_OVERRIDE;
//! compute Trihedron on curve
//! first and seconde derivatives.
- //! Warning : It used only for C2 aproximation
+ //! Warning : It used only for C2 approximation
Standard_EXPORT virtual Standard_Boolean D2 (const Standard_Real Param, gp_Vec& Tangent, gp_Vec& DTangent, gp_Vec& D2Tangent, gp_Vec& Normal, gp_Vec& DNormal, gp_Vec& D2Normal, gp_Vec& BiNormal, gp_Vec& DBiNormal, gp_Vec& D2BiNormal) Standard_OVERRIDE;
//! Returns the number of intervals for continuity