-- Created on: 1993-04-02 -- Created by: Bruno DUMORTIER -- Copyright (c) 1993-1999 Matra Datavision -- Copyright (c) 1999-2012 OPEN CASCADE SAS -- -- The content of this file is subject to the Open CASCADE Technology Public -- License Version 6.5 (the "License"). You may not use the content of this file -- except in compliance with the License. Please obtain a copy of the License -- at http://www.opencascade.org and read it completely before using this file. -- -- The Initial Developer of the Original Code is Open CASCADE S.A.S., having its -- main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France. -- -- The Original Code and all software distributed under the License is -- distributed on an "AS IS" basis, without warranty of any kind, and the -- Initial Developer hereby disclaims all such warranties, including without -- limitation, any warranties of merchantability, fitness for a particular -- purpose or non-infringement. Please see the License for the specific terms -- and conditions governing the rights and limitations under the License. deferred class Curve2d from Adaptor2d ---Purpose: Root class for 2D 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. -- A derived concrete class is provided: -- Geom2dAdaptor_Curve for a curve from the Geom2d package. uses Array1OfReal from TColStd, Shape from GeomAbs, CurveType from GeomAbs, Vec2d from gp, Pnt2d from gp, Circ2d from gp, Elips2d from gp, Hypr2d from gp, Parab2d from gp, Lin2d from gp, BezierCurve from Geom2d, BSplineCurve from Geom2d, HCurve2d from Adaptor2d raises OutOfRange from Standard, NoSuchObject from Standard, DomainError from Standard is -- -- Global methods - Apply to the whole curve. -- Delete(me:out) is virtual; ---C++: alias "Standard_EXPORT virtual ~Adaptor2d_Curve2d(){Delete();}" FirstParameter(me) returns Real is virtual; LastParameter(me) returns Real is virtual; Continuity(me) returns Shape from GeomAbs is virtual; NbIntervals(me; S : Shape from GeomAbs) returns Integer ---Purpose: If necessary, breaks the curve in intervals of -- continuity . And returns the number of -- intervals. is virtual; Intervals(me; T : in out Array1OfReal from TColStd; S : Shape from GeomAbs) ---Purpose: Stores in the parameters bounding the intervals -- of continuity . -- -- The array must provide enough room to accomodate -- for the parameters. i.e. T.Length() > NbIntervals() raises OutOfRange from Standard is virtual; Trim(me; First, Last, Tol : Real) returns HCurve2d from Adaptor2d ---Purpose: Returns a curve equivalent of between -- parameters and . is used to -- test for 3d points confusion. raises OutOfRange from Standard ---Purpose: If >= is virtual; -- -- Local methods - Apply to the current interval. -- By default the current interval is the first. -- IsClosed(me) returns Boolean is virtual; IsPeriodic(me) returns Boolean is virtual; Period(me) returns Real raises DomainError from Standard -- if the curve is not periodic is virtual; Value(me; U : Real) returns Pnt2d from gp --- Purpose : Computes the point of parameter U on the curve. is virtual; D0 (me; U : Real; P : out Pnt2d from gp) --- Purpose : Computes the point of parameter U on the curve. is virtual; D1 (me; U : Real; P : out Pnt2d from gp ; V : out Vec2d from gp) --- Purpose : Computes the point of parameter U on the curve with its -- first derivative. raises DomainError from Standard --- Purpose : Raised if the continuity of the current interval -- is not C1. is virtual; D2 (me; U : Real; P : out Pnt2d from gp; V1, V2 : out Vec2d from gp) --- Purpose : -- Returns the point P of parameter U, the first and second -- derivatives V1 and V2. raises DomainError from Standard --- Purpose : Raised if the continuity of the current interval -- is not C2. is virtual; D3 (me; U : Real; P : out Pnt2d from gp; V1, V2, V3 : out Vec2d from gp) --- Purpose : -- Returns the point P of parameter U, the first, the second -- and the third derivative. raises DomainError from Standard --- Purpose : Raised if the continuity of the current interval -- is not C3. is virtual; DN (me; U : Real; N : Integer) returns Vec2d from gp --- Purpose : -- The returned vector gives the value of the derivative for the -- order of derivation N. raises DomainError from Standard, --- Purpose : Raised if the continuity of the current interval -- is not CN. OutOfRange from Standard --- Purpose : Raised if N < 1. is virtual; Resolution(me; R3d : Real) returns Real ---Purpose : Returns the parametric resolution corresponding -- to the real space resolution . is virtual; GetType(me) returns CurveType from GeomAbs ---Purpose: Returns the type of the curve in the current -- interval : Line, Circle, Ellipse, Hyperbola, -- Parabola, BezierCurve, BSplineCurve, OtherCurve. is virtual; -- -- The following methods must be called when GetType returned -- the corresponding type. -- Line(me) returns Lin2d from gp raises NoSuchObject from Standard is virtual; Circle(me) returns Circ2d from gp raises NoSuchObject from Standard is virtual; Ellipse(me) returns Elips2d from gp raises NoSuchObject from Standard is virtual; Hyperbola(me) returns Hypr2d from gp raises NoSuchObject from Standard is virtual; Parabola(me) returns Parab2d from gp raises NoSuchObject from Standard is virtual; Degree(me) returns Integer raises NoSuchObject from Standard is virtual; IsRational(me) returns Boolean raises NoSuchObject from Standard is virtual; NbPoles(me) returns Integer raises NoSuchObject from Standard is virtual; NbKnots(me) returns Integer raises NoSuchObject from Standard is virtual; Bezier(me) returns BezierCurve from Geom2d raises NoSuchObject from Standard is virtual; BSpline(me) returns BSplineCurve from Geom2d raises NoSuchObject from Standard is virtual; end Curve2d;