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 // Created on: 1995-06-13
 // 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 _BRepFeat_HeaderFile
 #define _BRepFeat_HeaderFile
 
 #include <Standard.hxx>
 #include <Standard_DefineAlloc.hxx>
 #include <Standard_Handle.hxx>
 
 #include <TColgp_SequenceOfPnt.hxx>
 #include <Standard_Real.hxx>
 #include <Standard_Boolean.hxx>
 #include <TopAbs_Orientation.hxx>
 #include <Standard_OStream.hxx>
 #include <BRepFeat_StatusError.hxx>
 class TopoDS_Shape;
 class gp_Pnt;
 class Geom_Curve;
 class TopoDS_Face;
 class BRepTopAdaptor_FClass2d;
 class Geom2dAdaptor_Curve;
 class TopoDS_Solid;
 
 
 //! BRepFeat is necessary for the
 //! creation and manipulation of both form and mechanical features in a
 //! Boundary Representation framework. Form features can be depressions or
 //! protrusions and include the following types:
 //! -          Cylinder
 //! -          Draft Prism
 //! -          Prism
 //! -          Revolved feature
 //! -          Pipe
 //! Depending on whether you wish to make a depression or a protrusion,
 //! you can choose your operation type between the following:
 //! - removing matter (a Boolean cut: Fuse setting 0)
 //! - adding matter (Boolean fusion: Fuse setting 1)
 //! The semantics of form feature creation is based on the
 //! construction of shapes:
 //! -          for a certain length in a certain direction
 //! -          up to a limiting face
 //! -          from a limiting face at a height
 //! -          above and/or below a plane
 //! The shape defining the construction of a feature can be either a
 //! supporting edge or a concerned area of a face.
 //! In case of supporting edge, this contour can be attached to a face
 //! of the basis shape by binding. When the contour is bound to this face,
 //! the information that the contour will slide on the face becomes
 //! available to the relevant class methods. In case of the concerned
 //! area of a face, you could, for example, cut it out and move it at
 //! a different height, which will define the limiting face of a
 //! protrusion or depression. Topological definition with local
 //! operations of this sort makes calculations simpler and faster
 //! than a global operation. The latter would entail a second phase of
 //! removing unwanted matter to get the same result.
 //! Mechanical features include ribs - protrusions - and grooves (or
 //! slots) - depressions along planar (linear) surfaces or revolution surfaces.
 //! The semantics of mechanical features is based on giving
 //! thickness to a contour. This thickness can either be unilateral
 //! - on one side of the contour - or bilateral - on both sides. As in
 //! the semantics of form features, the thickness is defined by
 //! construction of shapes in specific contexts.
 //! However, in case of mechanical features, development contexts
 //! differ. Here they include extrusion:
 //! -          to a limiting face of the basis shape
 //! -          to or from a limiting plane
 //! -          to a height.
 class BRepFeat 
 {
 public:
 
   DEFINE_STANDARD_ALLOC
 
   
   Standard_EXPORT static void SampleEdges (const TopoDS_Shape& S, TColgp_SequenceOfPnt& Pt);
   
   Standard_EXPORT static void Barycenter (const TopoDS_Shape& S, gp_Pnt& Pt);
   
   Standard_EXPORT static Standard_Real ParametricBarycenter (const TopoDS_Shape& S, const Handle(Geom_Curve)& C);
   
   //! Ori = True taking account the orientation
   Standard_EXPORT static void ParametricMinMax (const TopoDS_Shape& S, const Handle(Geom_Curve)& C, Standard_Real& prmin, Standard_Real& prmax, Standard_Real& prbmin, Standard_Real& prbmax, Standard_Boolean& flag, const Standard_Boolean Ori = Standard_False);
   
   Standard_EXPORT static Standard_Boolean IsInside (const TopoDS_Face& F1, const TopoDS_Face& F2);
   
   Standard_EXPORT static Standard_Boolean IsInOut (const BRepTopAdaptor_FClass2d& FC, const Geom2dAdaptor_Curve& AC);
   
   Standard_EXPORT static void FaceUntil (const TopoDS_Shape& S, TopoDS_Face& F);
   
   Standard_EXPORT static TopoDS_Solid Tool (const TopoDS_Shape& SRef, const TopoDS_Face& Fac, const TopAbs_Orientation Orf);
   
   //! Prints the Error description of the State <St> as a String on
   //! the Stream <S> and returns <S>.
   Standard_EXPORT static Standard_OStream& Print (const BRepFeat_StatusError SE, Standard_OStream& S);
 
 };
 
 #endif // _BRepFeat_HeaderFile

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