include/opencascade/BRepFeat_MakeLinearForm.hxx

0001 // Created on: 1997-04-14
0002 // Created by: Olga PILLOT
0003 // Copyright (c) 1997-1999 Matra Datavision
0004 // Copyright (c) 1999-2014 OPEN CASCADE SAS
0005 //
0006 // This file is part of Open CASCADE Technology software library.
0007 //
0008 // This library is free software; you can redistribute it and/or modify it under
0009 // the terms of the GNU Lesser General Public License version 2.1 as published
0010 // by the Free Software Foundation, with special exception defined in the file
0011 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
0012 // distribution for complete text of the license and disclaimer of any warranty.
0013 //
0014 // Alternatively, this file may be used under the terms of Open CASCADE
0015 // commercial license or contractual agreement.
0016
0017 #ifndef _BRepFeat_MakeLinearForm_HeaderFile
0018 #define _BRepFeat_MakeLinearForm_HeaderFile
0019
0020 #include <Standard.hxx>
0021 #include <Standard_DefineAlloc.hxx>
0022 #include <Standard_Handle.hxx>
0023
0024 #include <gp_Vec.hxx>
0025 #include <TopoDS_Shape.hxx>
0026 #include <NCollection_List.hxx>
0027 #include <TopTools_ShapeMapHasher.hxx>
0028 #include <NCollection_DataMap.hxx>
0029 #include <BRepFeat_RibSlot.hxx>
0030 #include <Standard_Integer.hxx>
0031 class Geom_Curve;
0032 class Geom_Plane;
0033 class TopoDS_Shape;
0034 class TopoDS_Wire;
0035 class TopoDS_Edge;
0036 class TopoDS_Face;
0037 class gp_Pnt;
0038
0039 //! Builds a rib or a groove along a developable, planar surface.
0040 //! The semantics of mechanical features is built around
0041 //! giving thickness to a contour. This thickness can either
0042 //! be symmetrical - on one side of the contour - or
0043 //! dissymmetrical - on both sides. As in the semantics of
0044 //! form features, the thickness is defined by construction of
0045 //! shapes in specific contexts.
0046 //! The development contexts differ, however, in case of
0047 //! mechanical features. Here they include extrusion:
0048 //! -   to a limiting face of the basis shape
0049 //! -   to or from a limiting plane
0050 //! -   to a height.
0051 class BRepFeat_MakeLinearForm : public BRepFeat_RibSlot
0052 {
0053 public:
0054   DEFINE_STANDARD_ALLOC
0055
0056   //! initializes the linear form class
0057   BRepFeat_MakeLinearForm();
0058
0059   //! contour W, a shape Sbase and a
0060   //! plane P are initialized to serve as the basic
0061   //! elements in the construction of the rib or groove.
0062   //! Direction and Direction1 give The vectors for
0063   //! defining the direction(s) in which thickness will be built up.
0064   //! Fuse offers a choice between:
0065   //! -   removing matter with a Boolean cut using the
0066   //! setting 0 in case of the groove
0067   //! -   adding matter with Boolean fusion using the
0068   //! setting 1 in case of the rib.
0069   BRepFeat_MakeLinearForm(const TopoDS_Shape&            Sbase,
0070                           const TopoDS_Wire&             W,
0071                           const occ::handle<Geom_Plane>& P,
0072                           const gp_Vec&                  Direction,
0073                           const gp_Vec&                  Direction1,
0074                           const int                      Fuse,
0075                           const bool                     Modify);
0076
0077   //! Initializes this construction algorithm.
0078   //! A contour W, a shape Sbase and a plane P are
0079   //! initialized to serve as the basic elements in the
0080   //! construction of the rib or groove. The vectors for
0081   //! defining the direction(s) in which thickness will be built
0082   //! up are given by Direction and Direction1.
0083   //! Fuse offers a choice between:
0084   //! -   removing matter with a Boolean cut using the setting
0085   //! 0 in case of the groove
0086   //! -   adding matter with Boolean fusion using the setting 1
0087   //! in case of the rib.
0088   Standard_EXPORT void Init(const TopoDS_Shape&            Sbase,
0089                             const TopoDS_Wire&             W,
0090                             const occ::handle<Geom_Plane>& P,
0091                             const gp_Vec&                  Direction,
0092                             const gp_Vec&                  Direction1,
0093                             const int                      Fuse,
0094                             const bool                     Modify);
0095
0096   //! Indicates that the edge <E> will slide on the face
0097   //! <OnFace>.
0098   //! Raises ConstructionError if the face does not belong to the
0099   //! basis shape, or the edge to the prismed shape.
0100   Standard_EXPORT void Add(const TopoDS_Edge& E, const TopoDS_Face& OnFace);
0101
0102   //! Performs a prism from the wire to the plane along the
0103   //! basis shape Sbase. Reconstructs the feature topologically.
0104   Standard_EXPORT void Perform();
0105
0106   //! Limits construction of the linear form feature by using
0107   //! one of the following three semantics:
0108   //! -   from a limiting plane
0109   //! -   to a limiting plane
0110   //! -   from one limiting plane to another.
0111   //! The setting is provided by a flag, flag, which can be set
0112   //! to from and/or until. The third semantic possibility above
0113   //! is selected by showing both from and until at the same time.
0114   Standard_EXPORT void TransformShapeFU(const int flag);
0115
0116   Standard_EXPORT bool Propagate(NCollection_List<TopoDS_Shape>& L,
0117                                  const TopoDS_Face&              F,
0118                                  const gp_Pnt&                   FPoint,
0119                                  const gp_Pnt&                   LPoint,
0120                                  bool&                           falseside);
0121
0122 private:
0123   occ::handle<Geom_Curve> myCrv;
0124   gp_Vec                  myDir;
0125   gp_Vec                  myDir1;
0126   occ::handle<Geom_Plane> myPln;
0127   double                  myBnd;
0128   NCollection_DataMap<TopoDS_Shape, NCollection_List<TopoDS_Shape>, TopTools_ShapeMapHasher>
0129                                  mySlface;
0130   NCollection_List<TopoDS_Shape> myListOfEdges;
0131   double                         myTol;
0132 };
0133
0134 #include <BRepFeat_MakeLinearForm.lxx>
0135
0136 #endif // _BRepFeat_MakeLinearForm_HeaderFile