// Created on: 1996-11-25
// Created by: Philippe MANGIN
// Copyright (c) 1996-1999 Matra Datavision
// Copyright (c) 1999-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.

#ifndef _BRepBlend_AppFunc_HeaderFile
#define _BRepBlend_AppFunc_HeaderFile

#include "Standard.hxx"
#include "Standard_Type.hxx"

#include "BRepBlend_AppFuncRoot.hxx"
#include "math_Vector.hxx"
class BRepBlend_Line;
class Blend_Function;
class Blend_AppFunction;
class Blend_Point;

//! Function to approximate by AppSurface
//! for Surface/Surface contact.
class BRepBlend_AppFunc : public BRepBlend_AppFuncRoot
{

public:
  Standard_EXPORT BRepBlend_AppFunc(occ::handle<BRepBlend_Line>& Line,
                                    Blend_Function&              Func,
                                    const double                 Tol3d,
                                    const double                 Tol2d);

  Standard_EXPORT void Point(const Blend_AppFunction& Func,
                             const double             Param,
                             const math_Vector&       Sol,
                             Blend_Point&             Pnt) const override;

  Standard_EXPORT void Vec(math_Vector& Sol, const Blend_Point& Pnt) const override;

  DEFINE_STANDARD_RTTIEXT(BRepBlend_AppFunc, BRepBlend_AppFuncRoot)
};

#endif // _BRepBlend_AppFunc_HeaderFile