// Created on: 1993-01-09
// Created by: CKY / Contract Toubro-Larsen (SIVA)
// 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 _IGESSolid_Face_HeaderFile
#define _IGESSolid_Face_HeaderFile

#include "Standard.hxx"

#include "IGESSolid_Loop.hxx"
#include "NCollection_Array1.hxx"
#include "NCollection_HArray1.hxx"
#include "IGESData_IGESEntity.hxx"
#include "Standard_Integer.hxx"
class IGESSolid_Loop;

//! defines Face, Type <510> Form Number <1>
//! in package IGESSolid
//! Face entity is a bound (partial) which has finite area
class IGESSolid_Face : public IGESData_IGESEntity
{

public:
  Standard_EXPORT IGESSolid_Face();

  //! This method is used to set the fields of the class Face
  //! - aSurface      : Pointer to the underlying surface
  //! - outerLoopFlag : True means the first loop is the outer loop
  //! - loops         : Array of loops bounding the face
  Standard_EXPORT void Init(
    const occ::handle<IGESData_IGESEntity>&                              aSurface,
    const bool                                                           outerLoopFlag,
    const occ::handle<NCollection_HArray1<occ::handle<IGESSolid_Loop>>>& loops);

  //! returns the underlying surface of the face
  Standard_EXPORT occ::handle<IGESData_IGESEntity> Surface() const;

  //! returns the number of the loops bounding the face
  Standard_EXPORT int NbLoops() const;

  //! checks whether there is an outer loop or not
  Standard_EXPORT bool HasOuterLoop() const;

  //! returns the Index'th loop that bounds the face
  //! raises exception if Index < 0 or Index >= NbLoops
  Standard_EXPORT occ::handle<IGESSolid_Loop> Loop(const int Index) const;

  DEFINE_STANDARD_RTTIEXT(IGESSolid_Face, IGESData_IGESEntity)

private:
  occ::handle<IGESData_IGESEntity>                              theSurface;
  bool                                                          hasOuterLoop;
  occ::handle<NCollection_HArray1<occ::handle<IGESSolid_Loop>>> theLoops;
};

#endif // _IGESSolid_Face_HeaderFile