// Created on: 1997-02-21
// Created by: Laurent BOURESCHE
// Copyright (c) 1997-1999 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_SurfCurvConstRadInv_HeaderFile
#define _BRepBlend_SurfCurvConstRadInv_HeaderFile

#include <Standard.hxx>
#include <Standard_DefineAlloc.hxx>
#include <Standard_Handle.hxx>

#include <Standard_Real.hxx>
#include <Standard_Integer.hxx>
#include <Blend_SurfCurvFuncInv.hxx>
#include <Standard_Boolean.hxx>
#include <math_Vector.hxx>
class Adaptor3d_HSurface;
class Adaptor3d_HCurve;
class Adaptor2d_HCurve2d;
class math_Matrix;


//! Function of reframing between a restriction surface of the
//! surface and a curve.
//! Class     used   to   compute  a    solution   of  the
//! surfRstConstRad  problem  on a done restriction of the
//! surface.
//! The vector  <X> used in  Value, Values and Derivatives
//! methods  has   to  be the   vector  of  the parametric
//! coordinates  wguide, wcurv, wrst  where  wguide is the
//! parameter on the guide line, wcurv is the parameter on
//! the curve, wrst is the parameter on the restriction on
//! the surface.
class BRepBlend_SurfCurvConstRadInv  : public Blend_SurfCurvFuncInv
{
public:

  DEFINE_STANDARD_ALLOC

  
  Standard_EXPORT BRepBlend_SurfCurvConstRadInv(const Handle(Adaptor3d_HSurface)& S, const Handle(Adaptor3d_HCurve)& C, const Handle(Adaptor3d_HCurve)& Cg);
  
  Standard_EXPORT void Set (const Standard_Real R, const Standard_Integer Choix);
  
  //! returns 3.
  Standard_EXPORT Standard_Integer NbEquations() const;
  
  //! computes the values <F> of the Functions for the
  //! variable <X>.
  //! Returns True if the computation was done successfully,
  //! False otherwise.
  Standard_EXPORT Standard_Boolean Value (const math_Vector& X, math_Vector& F);
  
  //! returns the values <D> of the derivatives for the
  //! variable <X>.
  //! Returns True if the computation was done successfully,
  //! False otherwise.
  Standard_EXPORT Standard_Boolean Derivatives (const math_Vector& X, math_Matrix& D);
  
  //! returns the values <F> of the functions and the derivatives
  //! <D> for the variable <X>.
  //! Returns True if the computation was done successfully,
  //! False otherwise.
  Standard_EXPORT Standard_Boolean Values (const math_Vector& X, math_Vector& F, math_Matrix& D);
  
  //! Set the restriction on which a solution has to be found.
  Standard_EXPORT void Set (const Handle(Adaptor2d_HCurve2d)& Rst);
  
  //! Returns in the vector Tolerance the parametric tolerance
  //! for each of the 3 variables;
  //! Tol is the tolerance used in 3d space.
  Standard_EXPORT void GetTolerance (math_Vector& Tolerance, const Standard_Real Tol) const;
  
  //! Returns in the vector InfBound the lowest values allowed
  //! for each of the 3 variables.
  //! Returns in the vector SupBound the greatest values allowed
  //! for each of the 3 variables.
  Standard_EXPORT void GetBounds (math_Vector& InfBound, math_Vector& SupBound) const;
  
  //! Returns Standard_True if Sol is a zero of the function.
  //! Tol is the tolerance used in 3d space.
  Standard_EXPORT Standard_Boolean IsSolution (const math_Vector& Sol, const Standard_Real Tol);




protected:





private:



  Handle(Adaptor3d_HSurface) surf;
  Handle(Adaptor3d_HCurve) curv;
  Handle(Adaptor3d_HCurve) guide;
  Handle(Adaptor2d_HCurve2d) rst;
  Standard_Real ray;
  Standard_Integer choix;


};







#endif // _BRepBlend_SurfCurvConstRadInv_HeaderFile
