// Created on: 1998-10-29
// Created by: Philippe MANGIN
// Copyright (c) 1998-1999 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 _GeomFill_PlanFunc_HeaderFile
#define _GeomFill_PlanFunc_HeaderFile

#include "Standard.hxx"
#include "Standard_DefineAlloc.hxx"
#include "Standard_Handle.hxx"

#include "gp_XYZ.hxx"
#include "gp_Pnt.hxx"
#include "math_FunctionWithDerivative.hxx"

class gp_Vec;

class GeomFill_PlanFunc : public math_FunctionWithDerivative
{
public:
  DEFINE_STANDARD_ALLOC

  Standard_EXPORT GeomFill_PlanFunc(const gp_Pnt&                       P,
                                    const gp_Vec&                       V,
                                    const occ::handle<Adaptor3d_Curve>& C);

  //! computes the value <F>of the function for the variable <X>.
  //! Returns True if the calculation were successfully done,
  //! False otherwise.
  Standard_EXPORT bool Value(const double X, double& F) override;

  //! computes the derivative <D> of the function
  //! for the variable <X>.
  //! Returns True if the calculation were successfully done,
  //! False otherwise.
  Standard_EXPORT bool Derivative(const double X, double& D) override;

  //! computes the value <F> and the derivative <D> of the
  //! function for the variable <X>.
  //! Returns True if the calculation were successfully done,
  //! False otherwise.
  Standard_EXPORT bool Values(const double X, double& F, double& D) override;

  Standard_EXPORT void D2(const double X, double& F, double& D1, double& D2);

  Standard_EXPORT void DEDT(const double X, const gp_Vec& DP, const gp_Vec& DV, double& DF);

  Standard_EXPORT void D2E(const double  X,
                           const gp_Vec& DP,
                           const gp_Vec& D2P,
                           const gp_Vec& DV,
                           const gp_Vec& D2V,
                           double&       DFDT,
                           double&       D2FDT2,
                           double&       D2FDTDX);

private:
  gp_XYZ                       myPnt;
  gp_XYZ                       myVec;
  gp_XYZ                       V;
  gp_Pnt                       G;
  occ::handle<Adaptor3d_Curve> myCurve;
};

#endif // _GeomFill_PlanFunc_HeaderFile