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|   | BRepBlend_AppFuncRstRst (Handle< BRepBlend_Line > &Line, Blend_RstRstFunction &Func, const Standard_Real Tol3d, const Standard_Real Tol2d) | 
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| void  | Point (const Blend_AppFunction &Func, const Standard_Real Param, const math_Vector &Sol, Blend_Point &Pnt) const override | 
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| void  | Vec (math_Vector &Sol, const Blend_Point &Pnt) const override | 
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| virtual Standard_Boolean  | D0 (const Standard_Real Param, const Standard_Real First, const Standard_Real Last, TColgp_Array1OfPnt &Poles, TColgp_Array1OfPnt2d &Poles2d, TColStd_Array1OfReal &Weigths) override | 
|   | compute the section for v = param  
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| virtual Standard_Boolean  | D1 (const Standard_Real Param, const Standard_Real First, const Standard_Real Last, TColgp_Array1OfPnt &Poles, TColgp_Array1OfVec &DPoles, TColgp_Array1OfPnt2d &Poles2d, TColgp_Array1OfVec2d &DPoles2d, TColStd_Array1OfReal &Weigths, TColStd_Array1OfReal &DWeigths) override | 
|   | compute the first derivative in v direction of the section for v = param  
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| virtual Standard_Boolean  | D2 (const Standard_Real Param, const Standard_Real First, const Standard_Real Last, TColgp_Array1OfPnt &Poles, TColgp_Array1OfVec &DPoles, TColgp_Array1OfVec &D2Poles, TColgp_Array1OfPnt2d &Poles2d, TColgp_Array1OfVec2d &DPoles2d, TColgp_Array1OfVec2d &D2Poles2d, TColStd_Array1OfReal &Weigths, TColStd_Array1OfReal &DWeigths, TColStd_Array1OfReal &D2Weigths) override | 
|   | compute the second derivative in v direction of the section for v = param  
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| virtual Standard_Integer  | Nb2dCurves () const override | 
|   | get the number of 2d curves to approximate.  
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| virtual void  | SectionShape (Standard_Integer &NbPoles, Standard_Integer &NbKnots, Standard_Integer &Degree) const override | 
|   | get the format of an section  
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| virtual void  | Knots (TColStd_Array1OfReal &TKnots) const override | 
|   | get the Knots of the section  
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| virtual void  | Mults (TColStd_Array1OfInteger &TMults) const override | 
|   | get the Multplicities of the section  
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| virtual Standard_Boolean  | IsRational () const override | 
|   | Returns if the section is rationnal or not.  
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| virtual Standard_Integer  | NbIntervals (const GeomAbs_Shape S) const override | 
|   | Returns the number of intervals for continuity . May be one if Continuity(me) >=   
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| virtual void  | Intervals (TColStd_Array1OfReal &T, const GeomAbs_Shape S) const override | 
|   | Stores in <T> the parameters bounding the intervals of continuity .  
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| virtual void  | SetInterval (const Standard_Real First, const Standard_Real Last) override | 
|   | Sets the bounds of the parametric interval on the fonction This determines the derivatives in these values if the function is not Cn.  
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| virtual void  | Resolution (const Standard_Integer Index, const Standard_Real Tol, Standard_Real &TolU, Standard_Real &TolV) const override | 
|   | Returns the resolutions in the sub-space 2d <Index> – This information is usfull to find an good tolerance in 2d approximation.  
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| virtual void  | GetTolerance (const Standard_Real BoundTol, const Standard_Real SurfTol, const Standard_Real AngleTol, TColStd_Array1OfReal &Tol3d) const override | 
|   | Returns the tolerance to reach in approximation to respecte BoundTol error at the Boundary AngleTol tangent error at the Boundary (in radian) SurfTol error inside the surface.  
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| virtual void  | SetTolerance (const Standard_Real Tol3d, const Standard_Real Tol2d) override | 
|   | Is usfull, if (me) have to be run numerical algorithme to perform D0, D1 or D2.  
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| virtual gp_Pnt  | BarycentreOfSurf () const override | 
|   | Get the barycentre of Surface. An very poor estimation is sufficient. This information is useful to perform well conditioned rational approximation.  
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| virtual Standard_Real  | MaximalSection () const override | 
|   | Returns the length of the maximum section. This information is useful to perform well conditioned rational approximation.  
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| virtual void  | GetMinimalWeight (TColStd_Array1OfReal &Weigths) const override | 
|   | Compute the minimal value of weight for each poles of all sections. This information is useful to perform well conditioned rational approximation.  
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  Public Member Functions inherited from Standard_Transient | 
|   | Standard_Transient () | 
|   | Empty constructor.  
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|   | Standard_Transient (const Standard_Transient &) | 
|   | Copy constructor – does nothing.  
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| Standard_Transient &  | operator= (const Standard_Transient &) | 
|   | Assignment operator, needed to avoid copying reference counter.  
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| virtual  | ~Standard_Transient () | 
|   | Destructor must be virtual.  
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| virtual const opencascade::handle< Standard_Type > &  | DynamicType () const | 
|   | Returns a type descriptor about this object.  
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| Standard_Boolean  | IsInstance (const opencascade::handle< Standard_Type > &theType) const | 
|   | Returns a true value if this is an instance of Type.  
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| Standard_Boolean  | IsInstance (const Standard_CString theTypeName) const | 
|   | Returns a true value if this is an instance of TypeName.  
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| Standard_Boolean  | IsKind (const opencascade::handle< Standard_Type > &theType) const | 
|   | Returns true if this is an instance of Type or an instance of any class that inherits from Type. Note that multiple inheritance is not supported by OCCT RTTI mechanism.  
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| Standard_Boolean  | IsKind (const Standard_CString theTypeName) const | 
|   | Returns true if this is an instance of TypeName or an instance of any class that inherits from TypeName. Note that multiple inheritance is not supported by OCCT RTTI mechanism.  
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| Standard_Transient *  | This () const | 
|   | Returns non-const pointer to this object (like const_cast). For protection against creating handle to objects allocated in stack or call from constructor, it will raise exception Standard_ProgramError if reference counter is zero.  
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| Standard_Integer  | GetRefCount () const noexcept | 
|   | Get the reference counter of this object.  
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| void  | IncrementRefCounter () noexcept | 
|   | Increments the reference counter of this object.  
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| Standard_Integer  | DecrementRefCounter () noexcept | 
|   | Decrements the reference counter of this object; returns the decremented value.  
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| virtual void  | Delete () const | 
|   | Memory deallocator for transient classes.  
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Function to approximate by AppSurface for Edge/Face (Curve/Curve contact).