include/opencascade/Intf_Polygon2d.hxx

0001 // Created on: 2012-02-10
0002 // Created by: Serey ZERCHANINOV
0003 // Copyright (c) 2012-2014 OPEN CASCADE SAS
0004 //
0005 // This file is part of Open CASCADE Technology software library.
0006 //
0007 // This library is free software; you can redistribute it and/or modify it under
0008 // the terms of the GNU Lesser General Public License version 2.1 as published
0009 // by the Free Software Foundation, with special exception defined in the file
0010 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
0011 // distribution for complete text of the license and disclaimer of any warranty.
0012 //
0013 // Alternatively, this file may be used under the terms of Open CASCADE
0014 // commercial license or contractual agreement.
0015
0016 #ifndef _Intf_Polygon2d_HeaderFile
0017 #define _Intf_Polygon2d_HeaderFile
0018
0019 #include <Standard.hxx>
0020 #include <Standard_DefineAlloc.hxx>
0021 #include <Standard_Handle.hxx>
0022
0023 #include <Bnd_Box2d.hxx>
0024 #include <Standard_Boolean.hxx>
0025 class gp_Pnt2d;
0026
0027 //! Describes the necessary polygon information to compute
0028 //! the interferences.
0029 class Intf_Polygon2d
0030 {
0031 public:
0032   DEFINE_STANDARD_ALLOC
0033
0034   //! Returns the bounding box of the polygon.
0035   const Bnd_Box2d& Bounding() const;
0036
0037   //! Returns True if the polyline is closed.
0038   Standard_EXPORT virtual Standard_Boolean Closed() const;
0039
0040   virtual ~Intf_Polygon2d() {}
0041
0042   //! Returns the tolerance of the polygon.
0043   Standard_EXPORT virtual Standard_Real DeflectionOverEstimation() const = 0;
0044
0045   //! Returns the number of Segments in the polyline.
0046   Standard_EXPORT virtual Standard_Integer NbSegments() const = 0;
0047
0048   //! Returns the points of the segment <Index> in the Polygon.
0049   Standard_EXPORT virtual void Segment(const Standard_Integer theIndex,
0050                                        gp_Pnt2d&              theBegin,
0051                                        gp_Pnt2d&              theEnd) const = 0;
0052
0053 protected:
0054   Bnd_Box2d myBox;
0055
0056 private:
0057 };
0058
0059 #include <Intf_Polygon2d.lxx>
0060
0061 #endif // _Intf_Polygon2d_HeaderFile