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    Open CASCADE Technology Reference Manual 8.0.1
    BRepTools_Modification Class Referenceabstract

    Defines geometric modifications to a shape, i.e. changes to faces, edges and vertices. More...

    #include <BRepTools_Modification.hxx>

    Inheritance diagram for BRepTools_Modification:

    Public Member Functions

    virtual bool NewSurface (const TopoDS_Face &F, occ::handle< Geom_Surface > &S, TopLoc_Location &L, double &Tol, bool &RevWires, bool &RevFace)=0
     Returns true if the face, F, has been modified. If the face has been modified:
    virtual bool NewTriangulation (const TopoDS_Face &F, occ::handle< Poly_Triangulation > &T)
     Returns true if the face has been modified according to changed triangulation. If the face has been modified:
    virtual bool NewCurve (const TopoDS_Edge &E, occ::handle< Geom_Curve > &C, TopLoc_Location &L, double &Tol)=0
     Returns true if the edge, E, has been modified. If the edge has been modified:
    virtual bool NewPolygon (const TopoDS_Edge &E, occ::handle< Poly_Polygon3D > &P)
     Returns true if the edge has been modified according to changed polygon. If the edge has been modified:
    virtual bool NewPolygonOnTriangulation (const TopoDS_Edge &E, const TopoDS_Face &F, occ::handle< Poly_PolygonOnTriangulation > &P)
     Returns true if the edge has been modified according to changed polygon on triangulation. If the edge has been modified:
    virtual bool NewPoint (const TopoDS_Vertex &V, gp_Pnt &P, double &Tol)=0
     Returns true if the vertex V has been modified. If V has been modified:
    virtual bool NewCurve2d (const TopoDS_Edge &E, const TopoDS_Face &F, const TopoDS_Edge &NewE, const TopoDS_Face &NewF, occ::handle< Geom2d_Curve > &C, double &Tol)=0
     Returns true if the edge, E, has a new curve on surface on the face, F. If a new curve exists:
    virtual bool NewParameter (const TopoDS_Vertex &V, const TopoDS_Edge &E, double &P, double &Tol)=0
     Returns true if the vertex V has a new parameter on the edge E. If a new parameter exists:
    virtual GeomAbs_Shape Continuity (const TopoDS_Edge &E, const TopoDS_Face &F1, const TopoDS_Face &F2, const TopoDS_Edge &NewE, const TopoDS_Face &NewF1, const TopoDS_Face &NewF2)=0
     Returns the continuity of <NewE> between <NewF1> and <NewF2>. <NewE> is the new edge created from <E>. <NewF1> (resp. <NewF2>) is the new face created from <F1> (resp. <F2>).
    Public Member Functions inherited from Standard_Transient
     Standard_Transient ()
     Empty constructor.
     Standard_Transient (const Standard_Transient &)
     Copy constructor – does nothing.
    Standard_Transientoperator= (const Standard_Transient &)
     Assignment operator, needed to avoid copying reference counter.
    virtual ~Standard_Transient ()=default
     Destructor must be virtual.
    virtual const opencascade::handle< Standard_Type > & DynamicType () const
     Returns a type descriptor about this object.
    bool IsInstance (const opencascade::handle< Standard_Type > &theType) const
     Returns a true value if this is an instance of Type.
    bool IsInstance (const char *const theTypeName) const
     Returns a true value if this is an instance of TypeName.
    bool IsKind (const opencascade::handle< Standard_Type > &theType) const
     Returns true if this is an instance of Type or an instance of any class that inherits from Type. Note that multiple inheritance is not supported by OCCT RTTI mechanism.
    bool IsKind (const char *const theTypeName) const
     Returns true if this is an instance of TypeName or an instance of any class that inherits from TypeName. Note that multiple inheritance is not supported by OCCT RTTI mechanism.
    Standard_TransientThis () const
     Returns non-const pointer to this object (like const_cast). For protection against creating handle to objects allocated in stack or call from constructor, it will raise exception Standard_ProgramError if reference counter is zero.
    int GetRefCount () const noexcept
     Get the reference counter of this object.
    void IncrementRefCounter () noexcept
     Increments the reference counter of this object. Uses relaxed memory ordering since incrementing only requires atomicity, not synchronization with other memory operations.
    int DecrementRefCounter () noexcept
     Decrements the reference counter of this object; returns the decremented value. Uses release ordering for the decrement to ensure all writes to the object are visible before the count reaches zero. An acquire fence is added only when the count reaches zero, ensuring proper synchronization before deletion. This is more efficient than using acq_rel for every decrement.
    virtual void Delete () const
     Memory deallocator for transient classes.

    Additional Inherited Members

    typedef void base_type
     Returns a type descriptor about this object.
    static constexpr const char * get_type_name ()
     Returns a type descriptor about this object.
    static const opencascade::handle< Standard_Type > & get_type_descriptor ()
     Returns type descriptor of Standard_Transient class.

    Detailed Description

    Defines geometric modifications to a shape, i.e. changes to faces, edges and vertices.

    Member Function Documentation

    ◆ Continuity()

    virtual GeomAbs_Shape BRepTools_Modification::Continuity ( const TopoDS_Edge & E,
    const TopoDS_Face & F1,
    const TopoDS_Face & F2,
    const TopoDS_Edge & NewE,
    const TopoDS_Face & NewF1,
    const TopoDS_Face & NewF2 )
    pure virtual

    Returns the continuity of <NewE> between <NewF1> and <NewF2>. <NewE> is the new edge created from <E>. <NewF1> (resp. <NewF2>) is the new face created from <F1> (resp. <F2>).

    Implemented in BRepOffset_SimpleOffset, BRepTools_CopyModification, BRepTools_GTrsfModification, BRepTools_NurbsConvertModification, BRepTools_TrsfModification, Draft_Modification, ShapeCustom_BSplineRestriction, ShapeCustom_ConvertToBSpline, ShapeCustom_ConvertToRevolution, ShapeCustom_DirectModification, and ShapeCustom_SweptToElementary.

    ◆ NewCurve()

    virtual bool BRepTools_Modification::NewCurve ( const TopoDS_Edge & E,
    occ::handle< Geom_Curve > & C,
    TopLoc_Location & L,
    double & Tol )
    pure virtual

    Returns true if the edge, E, has been modified. If the edge has been modified:

    • C is the new geometry associated with the edge,
    • L is its new location, and
    • Tol is the new tolerance. If the edge has not been modified, this function returns false, and the values of C, L and Tol are not significant.

    Implemented in BRepOffset_SimpleOffset, BRepTools_CopyModification, BRepTools_GTrsfModification, BRepTools_NurbsConvertModification, BRepTools_TrsfModification, Draft_Modification, ShapeCustom_BSplineRestriction, ShapeCustom_ConvertToBSpline, ShapeCustom_ConvertToRevolution, ShapeCustom_DirectModification, ShapeCustom_SweptToElementary, and ShapeCustom_TrsfModification.

    ◆ NewCurve2d()

    virtual bool BRepTools_Modification::NewCurve2d ( const TopoDS_Edge & E,
    const TopoDS_Face & F,
    const TopoDS_Edge & NewE,
    const TopoDS_Face & NewF,
    occ::handle< Geom2d_Curve > & C,
    double & Tol )
    pure virtual

    Returns true if the edge, E, has a new curve on surface on the face, F. If a new curve exists:

    • C is the new geometry of the edge,
    • L is the new location, and
    • Tol is the new tolerance. NewE is the new edge created from E, and NewF is the new face created from F. If there is no new curve on the face, this function returns false, and the values of C, L and Tol are not significant.

    Implemented in BRepOffset_SimpleOffset, BRepTools_CopyModification, BRepTools_GTrsfModification, BRepTools_NurbsConvertModification, BRepTools_TrsfModification, Draft_Modification, ShapeCustom_BSplineRestriction, ShapeCustom_ConvertToBSpline, ShapeCustom_ConvertToRevolution, ShapeCustom_DirectModification, ShapeCustom_SweptToElementary, and ShapeCustom_TrsfModification.

    ◆ NewParameter()

    virtual bool BRepTools_Modification::NewParameter ( const TopoDS_Vertex & V,
    const TopoDS_Edge & E,
    double & P,
    double & Tol )
    pure virtual

    Returns true if the vertex V has a new parameter on the edge E. If a new parameter exists:

    • P is the parameter, and
    • Tol is the new tolerance. If there is no new parameter this function returns false, and the values of P and Tol are not significant.

    Implemented in BRepOffset_SimpleOffset, BRepTools_CopyModification, BRepTools_GTrsfModification, BRepTools_NurbsConvertModification, BRepTools_TrsfModification, Draft_Modification, ShapeCustom_BSplineRestriction, ShapeCustom_ConvertToBSpline, ShapeCustom_ConvertToRevolution, ShapeCustom_DirectModification, ShapeCustom_SweptToElementary, and ShapeCustom_TrsfModification.

    ◆ NewPoint()

    virtual bool BRepTools_Modification::NewPoint ( const TopoDS_Vertex & V,
    gp_Pnt & P,
    double & Tol )
    pure virtual

    Returns true if the vertex V has been modified. If V has been modified:

    • P is the new geometry of the vertex, and
    • Tol is the new tolerance. If the vertex has not been modified this function returns false, and the values of P and Tol are not significant.

    Implemented in BRepOffset_SimpleOffset, BRepTools_CopyModification, BRepTools_GTrsfModification, BRepTools_NurbsConvertModification, BRepTools_TrsfModification, Draft_Modification, ShapeCustom_BSplineRestriction, ShapeCustom_ConvertToBSpline, ShapeCustom_ConvertToRevolution, ShapeCustom_DirectModification, ShapeCustom_SweptToElementary, and ShapeCustom_TrsfModification.

    ◆ NewPolygon()

    virtual bool BRepTools_Modification::NewPolygon ( const TopoDS_Edge & E,
    occ::handle< Poly_Polygon3D > & P )
    virtual

    Returns true if the edge has been modified according to changed polygon. If the edge has been modified:

    • P is a new polygon

    Reimplemented in BRepTools_CopyModification, BRepTools_GTrsfModification, BRepTools_NurbsConvertModification, and BRepTools_TrsfModification.

    ◆ NewPolygonOnTriangulation()

    virtual bool BRepTools_Modification::NewPolygonOnTriangulation ( const TopoDS_Edge & E,
    const TopoDS_Face & F,
    occ::handle< Poly_PolygonOnTriangulation > & P )
    virtual

    Returns true if the edge has been modified according to changed polygon on triangulation. If the edge has been modified:

    • P is a new polygon on triangulation

    Reimplemented in BRepTools_CopyModification, BRepTools_GTrsfModification, BRepTools_NurbsConvertModification, and BRepTools_TrsfModification.

    ◆ NewSurface()

    virtual bool BRepTools_Modification::NewSurface ( const TopoDS_Face & F,
    occ::handle< Geom_Surface > & S,
    TopLoc_Location & L,
    double & Tol,
    bool & RevWires,
    bool & RevFace )
    pure virtual

    Returns true if the face, F, has been modified. If the face has been modified:

    • S is the new geometry of the face,
    • L is its new location, and
    • Tol is the new tolerance. The flag, RevWires, is set to true when the modification reverses the normal of the surface, (i.e. the wires have to be reversed). The flag, RevFace, is set to true if the orientation of the modified face changes in the shells which contain it. If the face has not been modified this function returns false, and the values of S, L, Tol, RevWires and RevFace are not significant.

    Implemented in BRepOffset_SimpleOffset, BRepTools_CopyModification, BRepTools_GTrsfModification, BRepTools_NurbsConvertModification, BRepTools_TrsfModification, Draft_Modification, ShapeCustom_BSplineRestriction, ShapeCustom_ConvertToBSpline, ShapeCustom_ConvertToRevolution, ShapeCustom_DirectModification, ShapeCustom_SweptToElementary, and ShapeCustom_TrsfModification.

    ◆ NewTriangulation()

    virtual bool BRepTools_Modification::NewTriangulation ( const TopoDS_Face & F,
    occ::handle< Poly_Triangulation > & T )
    virtual

    Returns true if the face has been modified according to changed triangulation. If the face has been modified:

    • T is a new triangulation on the face

    Reimplemented in BRepTools_CopyModification, BRepTools_GTrsfModification, BRepTools_NurbsConvertModification, and BRepTools_TrsfModification.


    The documentation for this class was generated from the following file: