// Created on: 1998-08-17
// 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 _BRepFill_ShapeLaw_HeaderFile
#define _BRepFill_ShapeLaw_HeaderFile

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

#include "TopoDS_Shape.hxx"
#include "NCollection_Array1.hxx"
#include "NCollection_HArray1.hxx"
#include "BRepFill_SectionLaw.hxx"
#include "GeomAbs_Shape.hxx"
#include "Standard_Integer.hxx"
class Law_Function;
class TopoDS_Vertex;
class TopoDS_Wire;
class GeomFill_SectionLaw;
class TopoDS_Edge;

//! Build Section Law, with an Vertex, or an Wire
class BRepFill_ShapeLaw : public BRepFill_SectionLaw
{

public:
  //! Construct an constant Law
  Standard_EXPORT BRepFill_ShapeLaw(const TopoDS_Vertex& V, const bool Build = true);

  //! Construct an constant Law
  Standard_EXPORT BRepFill_ShapeLaw(const TopoDS_Wire& W, const bool Build = true);

  //! Construct an evolutive Law
  Standard_EXPORT BRepFill_ShapeLaw(const TopoDS_Wire&               W,
                                    const occ::handle<Law_Function>& L,
                                    const bool                       Build = true);

  //! Say if the input shape is a vertex.
  Standard_EXPORT bool IsVertex() const override;

  //! Say if the Law is Constant.
  Standard_EXPORT bool IsConstant() const override;

  //! Give the law build on a concatenated section
  Standard_EXPORT occ::handle<GeomFill_SectionLaw> ConcatenedLaw() const override;

  Standard_EXPORT GeomAbs_Shape Continuity(const int Index, const double TolAngular) const override;

  Standard_EXPORT double VertexTol(const int Index, const double Param) const override;

  Standard_EXPORT TopoDS_Vertex Vertex(const int Index, const double Param) const override;

  Standard_EXPORT void D0(const double Param, TopoDS_Shape& S) override;

  const TopoDS_Edge& Edge(const int Index) const;

  DEFINE_STANDARD_RTTIEXT(BRepFill_ShapeLaw, BRepFill_SectionLaw)

protected:
  bool vertex;

private:
  Standard_EXPORT void Init(const bool B);

  TopoDS_Shape                                   myShape;
  occ::handle<NCollection_HArray1<TopoDS_Shape>> myEdges;
  occ::handle<Law_Function>                      TheLaw;
};

#include "BRepFill_ShapeLaw.lxx"

#endif // _BRepFill_ShapeLaw_HeaderFile