Open CASCADE Technology
7.1.0.beta
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Root class for 3D curves on which geometric algorithms work. An adapted curve is an interface between the services provided by a curve and those required of the curve by algorithms which use it. Two derived concrete classes are provided: More...
#include <Adaptor3d_Curve.hxx>
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virtual Standard_Real | FirstParameter () const |
virtual Standard_Real | LastParameter () const |
virtual GeomAbs_Shape | Continuity () const |
virtual Standard_Integer | NbIntervals (const GeomAbs_Shape S) const |
Returns the number of intervals for continuity <S>. May be one if Continuity(me) >= <S> More... | |
virtual void | Intervals (TColStd_Array1OfReal &T, const GeomAbs_Shape S) const |
Stores in <T> the parameters bounding the intervals of continuity <S>. More... | |
virtual Handle< Adaptor3d_HCurve > | Trim (const Standard_Real First, const Standard_Real Last, const Standard_Real Tol) const |
Returns a curve equivalent of <me> between parameters <First> and <Last>. <Tol> is used to test for 3d points confusion. If <First> >= <Last> More... | |
virtual Standard_Boolean | IsClosed () const |
virtual Standard_Boolean | IsPeriodic () const |
virtual Standard_Real | Period () const |
virtual gp_Pnt | Value (const Standard_Real U) const |
Computes the point of parameter U on the curve. More... | |
virtual void | D0 (const Standard_Real U, gp_Pnt &P) const |
Computes the point of parameter U on the curve. More... | |
virtual void | D1 (const Standard_Real U, gp_Pnt &P, gp_Vec &V) const |
Computes the point of parameter U on the curve with its first derivative. Raised if the continuity of the current interval is not C1. More... | |
virtual void | D2 (const Standard_Real U, gp_Pnt &P, gp_Vec &V1, gp_Vec &V2) const |
Returns the point P of parameter U, the first and second derivatives V1 and V2. Raised if the continuity of the current interval is not C2. More... | |
virtual void | D3 (const Standard_Real U, gp_Pnt &P, gp_Vec &V1, gp_Vec &V2, gp_Vec &V3) const |
Returns the point P of parameter U, the first, the second and the third derivative. Raised if the continuity of the current interval is not C3. More... | |
virtual gp_Vec | DN (const Standard_Real U, const Standard_Integer N) const |
The returned vector gives the value of the derivative for the order of derivation N. Raised if the continuity of the current interval is not CN. Raised if N < 1. More... | |
virtual Standard_Real | Resolution (const Standard_Real R3d) const |
Returns the parametric resolution corresponding to the real space resolution <R3d>. More... | |
virtual GeomAbs_CurveType | GetType () const |
Returns the type of the curve in the current interval : Line, Circle, Ellipse, Hyperbola, Parabola, BezierCurve, BSplineCurve, OtherCurve. More... | |
virtual gp_Lin | Line () const |
virtual gp_Circ | Circle () const |
virtual gp_Elips | Ellipse () const |
virtual gp_Hypr | Hyperbola () const |
virtual gp_Parab | Parabola () const |
virtual Standard_Integer | Degree () const |
virtual Standard_Boolean | IsRational () const |
virtual Standard_Integer | NbPoles () const |
virtual Standard_Integer | NbKnots () const |
virtual Handle< Geom_BezierCurve > | Bezier () const |
virtual Handle< Geom_BSplineCurve > | BSpline () const |
virtual Handle< Geom_OffsetCurve > | OffsetCurve () const |
virtual | ~Adaptor3d_Curve () |
Root class for 3D curves on which geometric algorithms work. An adapted curve is an interface between the services provided by a curve and those required of the curve by algorithms which use it. Two derived concrete classes are provided:
Polynomial coefficients of BSpline curves used for their evaluation are cached for better performance. Therefore these evaluations are not thread-safe and parallel evaluations need to be prevented.
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Computes the point of parameter U on the curve.
Reimplemented in BRepAdaptor_Curve, ProjLib_ProjectOnPlane, Adaptor3d_IsoCurve, Adaptor3d_CurveOnSurface, BRepAdaptor_CompCurve, GeomAdaptor_Curve, BiTgte_CurveOnEdge, BiTgte_CurveOnVertex, ChFiDS_ElSpine, and GeomFill_SnglrFunc.
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Computes the point of parameter U on the curve with its first derivative. Raised if the continuity of the current interval is not C1.
Reimplemented in BRepAdaptor_Curve, ProjLib_ProjectOnPlane, Adaptor3d_IsoCurve, Adaptor3d_CurveOnSurface, BRepAdaptor_CompCurve, GeomAdaptor_Curve, BiTgte_CurveOnEdge, BiTgte_CurveOnVertex, ChFiDS_ElSpine, and GeomFill_SnglrFunc.
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Returns the point P of parameter U, the first and second derivatives V1 and V2. Raised if the continuity of the current interval is not C2.
Reimplemented in BRepAdaptor_Curve, ProjLib_ProjectOnPlane, Adaptor3d_IsoCurve, GeomAdaptor_Curve, Adaptor3d_CurveOnSurface, BRepAdaptor_CompCurve, BiTgte_CurveOnEdge, BiTgte_CurveOnVertex, ChFiDS_ElSpine, and GeomFill_SnglrFunc.
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Returns the point P of parameter U, the first, the second and the third derivative. Raised if the continuity of the current interval is not C3.
Reimplemented in BRepAdaptor_Curve, ProjLib_ProjectOnPlane, GeomAdaptor_Curve, Adaptor3d_IsoCurve, Adaptor3d_CurveOnSurface, BRepAdaptor_CompCurve, BiTgte_CurveOnEdge, BiTgte_CurveOnVertex, ChFiDS_ElSpine, and GeomFill_SnglrFunc.
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The returned vector gives the value of the derivative for the order of derivation N. Raised if the continuity of the current interval is not CN. Raised if N < 1.
Reimplemented in BRepAdaptor_Curve, ProjLib_ProjectOnPlane, GeomAdaptor_Curve, Adaptor3d_IsoCurve, Adaptor3d_CurveOnSurface, BRepAdaptor_CompCurve, BiTgte_CurveOnEdge, BiTgte_CurveOnVertex, and GeomFill_SnglrFunc.
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Returns the type of the curve in the current interval : Line, Circle, Ellipse, Hyperbola, Parabola, BezierCurve, BSplineCurve, OtherCurve.
Reimplemented in BRepAdaptor_Curve, ProjLib_ProjectOnPlane, Adaptor3d_IsoCurve, GeomAdaptor_Curve, Adaptor3d_CurveOnSurface, BRepAdaptor_CompCurve, BiTgte_CurveOnEdge, BiTgte_CurveOnVertex, GeomFill_SnglrFunc, and ChFiDS_ElSpine.
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Stores in <T> the parameters bounding the intervals of continuity <S>.
The array must provide enough room to accomodate for the parameters. i.e. T.Length() > NbIntervals()
Reimplemented in BRepAdaptor_Curve, ProjLib_ProjectOnPlane, Adaptor3d_IsoCurve, Adaptor3d_CurveOnSurface, BRepAdaptor_CompCurve, GeomAdaptor_Curve, BiTgte_CurveOnEdge, BiTgte_CurveOnVertex, ChFiDS_ElSpine, and GeomFill_SnglrFunc.
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Returns the number of intervals for continuity <S>. May be one if Continuity(me) >= <S>
Reimplemented in BRepAdaptor_Curve, ProjLib_ProjectOnPlane, Adaptor3d_IsoCurve, Adaptor3d_CurveOnSurface, BRepAdaptor_CompCurve, GeomAdaptor_Curve, ChFiDS_ElSpine, BiTgte_CurveOnEdge, BiTgte_CurveOnVertex, and GeomFill_SnglrFunc.
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Reimplemented in BRepAdaptor_Curve, and GeomAdaptor_Curve.
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Returns the parametric resolution corresponding to the real space resolution <R3d>.
Reimplemented in BRepAdaptor_Curve, ProjLib_ProjectOnPlane, GeomAdaptor_Curve, Adaptor3d_IsoCurve, Adaptor3d_CurveOnSurface, BRepAdaptor_CompCurve, BiTgte_CurveOnEdge, BiTgte_CurveOnVertex, GeomFill_SnglrFunc, and ChFiDS_ElSpine.
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Returns a curve equivalent of <me> between parameters <First> and <Last>. <Tol> is used to test for 3d points confusion. If <First> >= <Last>
Reimplemented in BRepAdaptor_Curve, ProjLib_ProjectOnPlane, Adaptor3d_IsoCurve, Adaptor3d_CurveOnSurface, BRepAdaptor_CompCurve, GeomAdaptor_Curve, BiTgte_CurveOnEdge, BiTgte_CurveOnVertex, and ChFiDS_ElSpine.
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Computes the point of parameter U on the curve.
Reimplemented in BRepAdaptor_Curve, ProjLib_ProjectOnPlane, Adaptor3d_IsoCurve, Adaptor3d_CurveOnSurface, BRepAdaptor_CompCurve, GeomAdaptor_Curve, BiTgte_CurveOnEdge, BiTgte_CurveOnVertex, ChFiDS_ElSpine, and GeomFill_SnglrFunc.