--- /dev/null
+// Created on: 1993-03-31
+// Created by: Bruno DUMORTIER
+// Copyright (c) 1993-1999 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 _Adaptor3d_Curve_HeaderFile
+#define _Adaptor3d_Curve_HeaderFile
+
+#include <Standard.hxx>
+#include <Standard_DefineAlloc.hxx>
+#include <Standard_Handle.hxx>
+
+#include <Standard_Real.hxx>
+#include <GeomAbs_Shape.hxx>
+#include <Standard_Integer.hxx>
+#include <TColStd_Array1OfReal.hxx>
+#include <Standard_Boolean.hxx>
+#include <GeomAbs_CurveType.hxx>
+class Standard_OutOfRange;
+class Standard_NoSuchObject;
+class Standard_DomainError;
+class Adaptor3d_HCurve;
+class gp_Pnt;
+class gp_Vec;
+class gp_Lin;
+class gp_Circ;
+class gp_Elips;
+class gp_Hypr;
+class gp_Parab;
+class Geom_BezierCurve;
+class Geom_BSplineCurve;
+
+
+//! 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:
+//! - GeomAdaptor_Curve for a curve from the Geom package
+//! - Adaptor3d_CurveOnSurface for a curve lying on
+//! a surface from the Geom package.
+class Adaptor3d_Curve
+{
+public:
+
+ DEFINE_STANDARD_ALLOC
+
+
+ Standard_EXPORT virtual Standard_Real FirstParameter() const;
+
+ Standard_EXPORT virtual Standard_Real LastParameter() const;
+
+ Standard_EXPORT virtual GeomAbs_Shape Continuity() const;
+
+ //! Returns the number of intervals for continuity
+ //! <S>. May be one if Continuity(me) >= <S>
+ Standard_EXPORT virtual Standard_Integer NbIntervals (const GeomAbs_Shape S) const;
+
+ //! 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()
+ Standard_EXPORT virtual void Intervals (TColStd_Array1OfReal& T, const GeomAbs_Shape S) const;
+
+ //! Returns a curve equivalent of <me> between
+ //! parameters <First> and <Last>. <Tol> is used to
+ //! test for 3d points confusion.
+ //! If <First> >= <Last>
+ Standard_EXPORT virtual Handle(Adaptor3d_HCurve) Trim (const Standard_Real First, const Standard_Real Last, const Standard_Real Tol) const;
+
+ Standard_EXPORT virtual Standard_Boolean IsClosed() const;
+
+ Standard_EXPORT virtual Standard_Boolean IsPeriodic() const;
+
+ Standard_EXPORT virtual Standard_Real Period() const;
+
+ //! Computes the point of parameter U on the curve.
+ Standard_EXPORT virtual gp_Pnt Value (const Standard_Real U) const;
+
+ //! Computes the point of parameter U on the curve.
+ Standard_EXPORT virtual void D0 (const Standard_Real U, gp_Pnt& P) 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.
+ Standard_EXPORT virtual void D1 (const Standard_Real U, gp_Pnt& P, gp_Vec& V) 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.
+ Standard_EXPORT 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, the second
+ //! and the third derivative.
+ //! Raised if the continuity of the current interval
+ //! is not C3.
+ Standard_EXPORT virtual void D3 (const Standard_Real U, gp_Pnt& P, gp_Vec& V1, gp_Vec& V2, gp_Vec& V3) 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.
+ Standard_EXPORT virtual gp_Vec DN (const Standard_Real U, const Standard_Integer N) const;
+
+ //! Returns the parametric resolution corresponding
+ //! to the real space resolution <R3d>.
+ Standard_EXPORT virtual Standard_Real Resolution (const Standard_Real R3d) const;
+
+ //! Returns the type of the curve in the current
+ //! interval : Line, Circle, Ellipse, Hyperbola,
+ //! Parabola, BezierCurve, BSplineCurve, OtherCurve.
+ Standard_EXPORT virtual GeomAbs_CurveType GetType() const;
+
+ Standard_EXPORT virtual gp_Lin Line() const;
+
+ Standard_EXPORT virtual gp_Circ Circle() const;
+
+ Standard_EXPORT virtual gp_Elips Ellipse() const;
+
+ Standard_EXPORT virtual gp_Hypr Hyperbola() const;
+
+ Standard_EXPORT virtual gp_Parab Parabola() const;
+
+ Standard_EXPORT virtual Standard_Integer Degree() const;
+
+ Standard_EXPORT virtual Standard_Boolean IsRational() const;
+
+ Standard_EXPORT virtual Standard_Integer NbPoles() const;
+
+ Standard_EXPORT virtual Standard_Integer NbKnots() const;
+
+ Standard_EXPORT virtual Handle(Geom_BezierCurve) Bezier() const;
+
+ Standard_EXPORT virtual Handle(Geom_BSplineCurve) BSpline() const;
+ Standard_EXPORT virtual ~Adaptor3d_Curve();
+
+
+
+
+protected:
+
+
+
+
+
+private:
+
+
+
+
+
+};
+
+
+
+
+
+
+
+#endif // _Adaptor3d_Curve_HeaderFile
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