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-- File: HLRBRep_BCurveTool.cdl
-- Created: Mon Jul 17 16:25:23 1995
-- Author: Modelistation
-- <model@mastox>
---Copyright: Matra Datavision 1995
class BCurveTool from HLRBRep
uses
Array1OfReal from TColStd,
Array1OfPnt from TColgp,
Shape from GeomAbs,
CurveType from GeomAbs,
Vec from gp,
Pnt from gp,
Circ from gp,
Elips from gp,
Hypr from gp,
Parab from gp,
Lin from gp,
BezierCurve from Geom,
BSplineCurve from Geom,
Curve from BRepAdaptor
raises
OutOfRange from Standard,
NoSuchObject from Standard,
DomainError from Standard
is
--
-- Global methods - Apply to the whole curve.
--
FirstParameter(myclass; C: Curve from BRepAdaptor)
returns Real from Standard;
---C++: inline
LastParameter(myclass; C: Curve from BRepAdaptor)
returns Real from Standard;
---C++: inline
--
-- Services to break the curves to the expected continuity
--
-- If for example you need the curve to be C2 and the method
-- Continuity returns you something lower than C2 (say C1 for
-- example).
--
-- First compute the number of intervals with the requested
-- continuity with the method NbIntervals(). Note that if the
-- continuity is higher than the one you need NbIntervals will
-- return 1.
--
-- Then you get the parameters bounding the intervals with the
-- method Intervals, using an array of length at least
-- NbIntervals()+1.
--
-- If you need to create a curve with a restricted span you can
-- use the method Trim().
Continuity(myclass; C: Curve from BRepAdaptor)
returns Shape from GeomAbs;
---Purpose:
---C++: inline
NbIntervals(myclass; C : in out Curve from BRepAdaptor;
S : Shape from GeomAbs)
returns Integer from Standard;
---Purpose: Returns the number of intervals for continuity
-- <S>. May be one if Continuity(myclass) >= <S>
---C++: inline
Intervals(myclass; C : in out Curve from BRepAdaptor;
T : in out Array1OfReal from TColStd;
S : Shape from GeomAbs)
---Purpose: 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()
raises OutOfRange from Standard;
---C++: inline
IsClosed(myclass; C: Curve from BRepAdaptor)
returns Boolean from Standard;
---C++: inline
IsPeriodic(myclass; C: Curve from BRepAdaptor)
returns Boolean from Standard;
---C++: inline
Period(myclass; C: Curve from BRepAdaptor)
returns Real from Standard
raises DomainError from Standard;
---C++: inline
Value(myclass; C : Curve from BRepAdaptor;
U : Real from Standard)
returns Pnt from gp;
--- Purpose : Computes the point of parameter U on the curve.
---C++: inline
D0 (myclass; C : Curve from BRepAdaptor;
U : Real from Standard;
P : out Pnt from gp);
--- Purpose : Computes the point of parameter U on the curve.
---C++: inline
D1 (myclass; C : Curve from BRepAdaptor;
U : Real from Standard;
P : out Pnt from gp ;
V : out Vec 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.
---C++: inline
D2 (myclass; C : Curve from BRepAdaptor;
U : Real from Standard;
P : out Pnt from gp;
V1, V2 : out Vec 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.
---C++: inline
D3 (myclass; C : Curve from BRepAdaptor;
U : Real from Standard;
P : out Pnt from gp;
V1, V2, V3 : out Vec 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.
---C++: inline
DN (myclass; C : Curve from BRepAdaptor;
U : Real from Standard;
N : Integer from Standard)
returns Vec 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.
---C++: inline
Resolution(myclass; C : Curve from BRepAdaptor;
R3d : Real from Standard)
returns Real from Standard;
---Purpose : Returns the parametric resolution corresponding
-- to the real space resolution <R3d>.
---C++: inline
GetType(myclass; C: Curve from BRepAdaptor)
returns CurveType from GeomAbs;
---Purpose: Returns the type of the curve in the current
-- interval : Line, Circle, Ellipse, Hyperbola,
-- Parabola, BezierCurve, BSplineCurve, OtherCurve.
---C++: inline
--
-- The following methods must be called when GetType returned
-- the corresponding type.
--
Line(myclass; C: Curve from BRepAdaptor)
returns Lin from gp
raises NoSuchObject from Standard;
---C++: inline
Circle(myclass; C: Curve from BRepAdaptor)
returns Circ from gp
raises NoSuchObject from Standard;
---C++: inline
Ellipse(myclass; C: Curve from BRepAdaptor)
returns Elips from gp
raises NoSuchObject from Standard;
---C++: inline
Hyperbola(myclass; C: Curve from BRepAdaptor)
returns Hypr from gp
raises NoSuchObject from Standard;
---C++: inline
Parabola(myclass; C: Curve from BRepAdaptor)
returns Parab from gp
raises NoSuchObject from Standard;
---C++: inline
Bezier(myclass; C: Curve from BRepAdaptor)
returns BezierCurve from Geom
raises NoSuchObject from Standard;
BSpline(myclass; C: Curve from BRepAdaptor)
returns BSplineCurve from Geom
raises NoSuchObject from Standard;
Degree(myclass; C: Curve from BRepAdaptor)
returns Integer from Standard;
---C++: inline
IsRational(myclass; C: Curve from BRepAdaptor)
returns Boolean from Standard;
---C++: inline
NbPoles(myclass; C: Curve from BRepAdaptor)
returns Integer from Standard;
---C++: inline
NbKnots(myclass; C: Curve from BRepAdaptor)
returns Integer from Standard;
---C++: inline
Poles(myclass; C : Curve from BRepAdaptor;
T : in out Array1OfPnt from TColgp);
PolesAndWeights(myclass; C : Curve from BRepAdaptor;
T : in out Array1OfPnt from TColgp;
W : in out Array1OfReal from TColStd);
NbSamples(myclass; C : Curve from BRepAdaptor;
U0,U1 : Real from Standard)
returns Integer from Standard;
end BCurveTool;
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