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f4dee9bb20
Added DRAW command dsetsignal, resetting OSD signal handler with either armed or disabled FPE handler, according to an option. If called without arguments, it sets FPE handler only if environment variable OSD_FPE is defined (with value different from 0). On start, DRAW calls dsetsignal to set FPE signal if CSF_FPE is defined. Test bugs fclasses bug6143 uses dsetsignal to set FPE handler unconditionally before the test command, and resets it to default at the end. A number of changes in the code have been done in order to fix floating point exceptions that became generated after enabling signals: - Global functions Sinh() and Cosh() defined in Standard_Real.hxx are improved to raise Standard_NumericError exception if argument is too big (greater than 710.47586), instead of relying on system treatment of floating point overflow. These functions are used instead of sinh and cosh in ElCLib.cxx. - Maximal value of parameter on hyperbola is restricted by 23 (corresponding to ~1e10 in 3d) in order to avoid FP overflow in Extrema_GenExtCS.cxx, ShapeFix_EdgeProjAux.cxx. - Interface of the root curve adaptor class Adaptor3d_Curve has been updated to add new virtual methods BasisCurve and OffsetValue. They complement the adaptor for the case of offset curves. These methods are used in Extrema_GenExtCS.cxx to restrict domain search in the case of offset of hyperbola, in order to get rid of floating point overflow. All classes inheriting Adaptor3d_Curve have been changed to implement the new virtual methods. - Protection against division by zero has been implemented in ApproxInt_KnotTools.cxx, BRepClass3d_SClassifier.cxx, BRepGProp_Face.cxx, BRepMesh_FastDiscretFace.cxx, Geom2dGcc_Circ2d2TanOnIter.cxx, Geom2dInt_Geom2dCurveTool.cxx, IntPolyh_MaillageAffinage.cxx. - Protection against calling of math functions of infinite arguments has been added in BRepCheck_Edge.cxx, BRepLib.cxx, CSLib_NormalPolyDef.cxx, Extrema_FuncExtPC.gxx, Extrema_GExtPC.gxx, Extrema_GLocateExtPC.gxx, Intf_InterferencePolygonPolyhedron.gxx, ShapeAnalysis_Surface.cxx, ShapeAnalysis_TransferParametersProj.cxx, ShapeAnalysis_Wire.cxx, math_FunctionSetRoot.cxx. - Proper initialization of local variables is done in BOPAlgo_PaveFiller_6.cxx, XSDRAWSTLVRML.cxx. - Inconsistent usage of Standard_Boolean* to access integer data in HLR (caused by #27772) is corrected Some test cases have been updated to actual state.
253 lines
8.1 KiB
C++
253 lines
8.1 KiB
C++
// Created on: 1993-02-19
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// Created by: Remi LEQUETTE
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// Copyright (c) 1993-1999 Matra Datavision
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// Copyright (c) 1999-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#ifndef _BRepAdaptor_Curve_HeaderFile
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#define _BRepAdaptor_Curve_HeaderFile
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#include <Standard.hxx>
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#include <Standard_DefineAlloc.hxx>
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#include <Standard_Handle.hxx>
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#include <gp_Trsf.hxx>
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#include <GeomAdaptor_Curve.hxx>
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#include <TopoDS_Edge.hxx>
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#include <Adaptor3d_Curve.hxx>
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#include <Standard_Boolean.hxx>
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#include <Standard_Real.hxx>
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#include <GeomAbs_Shape.hxx>
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#include <Standard_Integer.hxx>
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#include <TColStd_Array1OfReal.hxx>
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#include <GeomAbs_CurveType.hxx>
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class Adaptor3d_HCurveOnSurface;
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class Standard_NullObject;
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class Standard_DomainError;
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class Standard_OutOfRange;
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class Standard_NoSuchObject;
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class TopoDS_Edge;
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class TopoDS_Face;
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class gp_Trsf;
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class GeomAdaptor_Curve;
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class Adaptor3d_CurveOnSurface;
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class Adaptor3d_HCurve;
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class gp_Pnt;
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class gp_Vec;
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class gp_Lin;
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class gp_Circ;
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class gp_Elips;
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class gp_Hypr;
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class gp_Parab;
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class Geom_BezierCurve;
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class Geom_BSplineCurve;
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class Geom_OffsetCurve;
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//! The Curve from BRepAdaptor allows to use an Edge
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//! of the BRep topology like a 3D curve.
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//!
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//! It has the methods the class Curve from Adaptor3d.
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//!
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//! It is created or Initialized with an Edge. It
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//! takes into account local coordinate systems. If
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//! the Edge has a 3D curve it is use with priority.
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//! If the edge has no 3D curve one of the curves on
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//! surface is used. It is possible to enforce using a
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//! curve on surface by creating or initialising with
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//! an Edge and a Face.
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class BRepAdaptor_Curve : public Adaptor3d_Curve
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{
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public:
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DEFINE_STANDARD_ALLOC
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//! Creates an undefined Curve with no Edge loaded.
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Standard_EXPORT BRepAdaptor_Curve();
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//! Creates a Curve to acces to the geometry of edge
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//! <E>.
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Standard_EXPORT BRepAdaptor_Curve(const TopoDS_Edge& E);
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//! Creates a Curve to acces to the geometry of edge
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//! <E>. The geometry will be computed using the
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//! parametric curve of <E> on the face <F>. An Error
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//! is raised if the edge does not have a pcurve on
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//! the face.
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Standard_EXPORT BRepAdaptor_Curve(const TopoDS_Edge& E, const TopoDS_Face& F);
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//! Sets the Curve <me> to acces to the geometry of
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//! edge <E>.
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Standard_EXPORT void Initialize (const TopoDS_Edge& E);
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//! Sets the Curve <me> to acces to the geometry of
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//! edge <E>. The geometry will be computed using the
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//! parametric curve of <E> on the face <F>. An Error
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//! is raised if the edge does not have a pcurve on
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//! the face.
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Standard_EXPORT void Initialize (const TopoDS_Edge& E, const TopoDS_Face& F);
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//! Returns the coordinate system of the curve.
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Standard_EXPORT const gp_Trsf& Trsf() const;
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//! Returns True if the edge geometry is computed from
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//! a 3D curve.
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Standard_EXPORT Standard_Boolean Is3DCurve() const;
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//! Returns True if the edge geometry is computed from
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//! a pcurve on a surface.
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Standard_EXPORT Standard_Boolean IsCurveOnSurface() const;
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//! Returns the Curve of the edge.
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Standard_EXPORT const GeomAdaptor_Curve& Curve() const;
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//! Returns the CurveOnSurface of the edge.
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Standard_EXPORT const Adaptor3d_CurveOnSurface& CurveOnSurface() const;
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//! Returns the edge.
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Standard_EXPORT const TopoDS_Edge& Edge() const;
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//! Returns the edge tolerance.
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Standard_EXPORT Standard_Real Tolerance() const;
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Standard_EXPORT Standard_Real FirstParameter() const Standard_OVERRIDE;
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Standard_EXPORT Standard_Real LastParameter() const Standard_OVERRIDE;
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Standard_EXPORT GeomAbs_Shape Continuity() const Standard_OVERRIDE;
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//! Returns the number of intervals for continuity
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//! <S>. May be one if Continuity(me) >= <S>
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Standard_EXPORT Standard_Integer NbIntervals (const GeomAbs_Shape S) const Standard_OVERRIDE;
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//! Stores in <T> the parameters bounding the intervals
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//! of continuity <S>.
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//!
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//! The array must provide enough room to accomodate
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//! for the parameters. i.e. T.Length() > NbIntervals()
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Standard_EXPORT void Intervals (TColStd_Array1OfReal& T, const GeomAbs_Shape S) const Standard_OVERRIDE;
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//! Returns a curve equivalent of <me> between
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//! parameters <First> and <Last>. <Tol> is used to
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//! test for 3d points confusion.
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//! If <First> >= <Last>
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Standard_EXPORT Handle(Adaptor3d_HCurve) Trim (const Standard_Real First, const Standard_Real Last, const Standard_Real Tol) const Standard_OVERRIDE;
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Standard_EXPORT Standard_Boolean IsClosed() const Standard_OVERRIDE;
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Standard_EXPORT Standard_Boolean IsPeriodic() const Standard_OVERRIDE;
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Standard_EXPORT Standard_Real Period() const Standard_OVERRIDE;
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//! Computes the point of parameter U on the curve
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Standard_EXPORT gp_Pnt Value (const Standard_Real U) const Standard_OVERRIDE;
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//! Computes the point of parameter U.
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Standard_EXPORT void D0 (const Standard_Real U, gp_Pnt& P) const Standard_OVERRIDE;
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//! Computes the point of parameter U on the curve
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//! with its first derivative.
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//! Raised if the continuity of the current interval
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//! is not C1.
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Standard_EXPORT void D1 (const Standard_Real U, gp_Pnt& P, gp_Vec& V) const Standard_OVERRIDE;
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//! Returns the point P of parameter U, the first and second
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//! derivatives V1 and V2.
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//! Raised if the continuity of the current interval
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//! is not C2.
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Standard_EXPORT void D2 (const Standard_Real U, gp_Pnt& P, gp_Vec& V1, gp_Vec& V2) const Standard_OVERRIDE;
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//! Returns the point P of parameter U, the first, the second
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//! and the third derivative.
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//! Raised if the continuity of the current interval
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//! is not C3.
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Standard_EXPORT void D3 (const Standard_Real U, gp_Pnt& P, gp_Vec& V1, gp_Vec& V2, gp_Vec& V3) const Standard_OVERRIDE;
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//! The returned vector gives the value of the derivative for the
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//! order of derivation N.
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//! Raised if the continuity of the current interval
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//! is not CN.
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//! Raised if N < 1.
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Standard_EXPORT gp_Vec DN (const Standard_Real U, const Standard_Integer N) const Standard_OVERRIDE;
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//! returns the parametric resolution
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Standard_EXPORT Standard_Real Resolution (const Standard_Real R3d) const Standard_OVERRIDE;
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Standard_EXPORT GeomAbs_CurveType GetType() const Standard_OVERRIDE;
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Standard_EXPORT gp_Lin Line() const Standard_OVERRIDE;
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Standard_EXPORT gp_Circ Circle() const Standard_OVERRIDE;
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Standard_EXPORT gp_Elips Ellipse() const Standard_OVERRIDE;
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Standard_EXPORT gp_Hypr Hyperbola() const Standard_OVERRIDE;
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Standard_EXPORT gp_Parab Parabola() const Standard_OVERRIDE;
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Standard_EXPORT Standard_Integer Degree() const Standard_OVERRIDE;
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Standard_EXPORT Standard_Boolean IsRational() const Standard_OVERRIDE;
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Standard_EXPORT Standard_Integer NbPoles() const Standard_OVERRIDE;
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Standard_EXPORT Standard_Integer NbKnots() const Standard_OVERRIDE;
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//! Warning :
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//! This will make a copy of the Bezier Curve
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//! since it applies to it myTsrf . Be carefull when
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//! using this method
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Standard_EXPORT Handle(Geom_BezierCurve) Bezier() const Standard_OVERRIDE;
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//! Warning :
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//! This will make a copy of the BSpline Curve
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//! since it applies to it myTsrf . Be carefull when
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//! using this method
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Standard_EXPORT Handle(Geom_BSplineCurve) BSpline() const Standard_OVERRIDE;
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Standard_EXPORT Handle(Geom_OffsetCurve) OffsetCurve() const Standard_OVERRIDE;
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protected:
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private:
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gp_Trsf myTrsf;
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GeomAdaptor_Curve myCurve;
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Handle(Adaptor3d_HCurveOnSurface) myConSurf;
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TopoDS_Edge myEdge;
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};
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#endif // _BRepAdaptor_Curve_HeaderFile
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