// Created on: 1993-06-03
// Created by: Jacques GOUSSARD
// Copyright (c) 1993-1999 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 _Contap_ArcFunction_HeaderFile
#define _Contap_ArcFunction_HeaderFile

#include <Adaptor2d_Curve2d.hxx>
#include <Adaptor3d_Surface.hxx>
#include <Contap_TFunction.hxx>
#include <gp_Dir.hxx>
#include <gp_Pnt.hxx>
#include <TColgp_SequenceOfPnt.hxx>
#include <IntSurf_Quadric.hxx>
#include <math_FunctionWithDerivative.hxx>

class Contap_ArcFunction : public math_FunctionWithDerivative
{
public:
  DEFINE_STANDARD_ALLOC

  Standard_EXPORT Contap_ArcFunction();

  Standard_EXPORT void Set(const Handle(Adaptor3d_Surface)& S);

  void Set(const gp_Dir& Direction);

  void Set(const gp_Dir& Direction, const Standard_Real Angle);

  void Set(const gp_Pnt& Eye);

  void Set(const gp_Pnt& Eye, const Standard_Real Angle);

  void Set(const Handle(Adaptor2d_Curve2d)& A);

  Standard_EXPORT Standard_Boolean Value(const Standard_Real X, Standard_Real& F) Standard_OVERRIDE;

  Standard_EXPORT Standard_Boolean Derivative(const Standard_Real X,
                                              Standard_Real&      D) Standard_OVERRIDE;

  Standard_EXPORT Standard_Boolean Values(const Standard_Real X,
                                          Standard_Real&      F,
                                          Standard_Real&      D) Standard_OVERRIDE;

  Standard_EXPORT Standard_Integer NbSamples() const;

  Standard_EXPORT virtual Standard_Integer GetStateNumber() Standard_OVERRIDE;

  const gp_Pnt& Valpoint(const Standard_Integer Index) const;

  Standard_EXPORT const IntSurf_Quadric& Quadric() const;

  //! Returns mySurf field
  const Handle(Adaptor3d_Surface)& Surface() const;

  //! Returns the point, which has been computed
  //! while the last calling Value() method
  const gp_Pnt& LastComputedPoint() const;

protected:
private:
  Handle(Adaptor2d_Curve2d) myArc;
  Handle(Adaptor3d_Surface) mySurf;
  Standard_Real             myMean;
  Contap_TFunction          myType;
  gp_Dir                    myDir;
  Standard_Real             myCosAng;
  gp_Pnt                    myEye;
  gp_Pnt                    solpt;
  TColgp_SequenceOfPnt      seqpt;
  IntSurf_Quadric           myQuad;
};

#include <Contap_ArcFunction.lxx>

#endif // _Contap_ArcFunction_HeaderFile
