// Created on: 1995-04-25
// Created by: Jacques GOUSSARD
// Copyright (c) 1995-1999 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 _LocOpe_HeaderFile
#define _LocOpe_HeaderFile

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

#include <Standard_Boolean.hxx>
#include <gp_Pnt.hxx>
#include <NCollection_Sequence.hxx>
class TopoDS_Wire;
class TopoDS_Face;
class TopoDS_Edge;
class TopoDS_Shape;

//! Provides tools to implement local topological
//! operations on a shape.
class LocOpe
{
public:
  DEFINE_STANDARD_ALLOC

  //! Returns true when the wire <W> is closed
  //! on the face <OnF>.
  Standard_EXPORT static bool Closed(const TopoDS_Wire& W, const TopoDS_Face& OnF);

  //! Returns true when the edge <E> is closed
  //! on the face <OnF>.
  Standard_EXPORT static bool Closed(const TopoDS_Edge& E, const TopoDS_Face& OnF);

  //! Returns true when the faces are tangent
  Standard_EXPORT static bool TgtFaces(const TopoDS_Edge& E,
                                       const TopoDS_Face& F1,
                                       const TopoDS_Face& F2);

  Standard_EXPORT static void SampleEdges(const TopoDS_Shape& S, NCollection_Sequence<gp_Pnt>& Pt);
};

#endif // _LocOpe_HeaderFile
