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-- File: HLRBRep_CurveTool.cdl
-- Created: Mon Jul 17 16:25:23 1995
-- Author: Modelistation
-- <model@mastox>
---Copyright: Matra Datavision 1995
class CurveTool from HLRBRep
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
raises
OutOfRange from Standard,
NoSuchObject from Standard,
DomainError from Standard
is
--
-- Global methods - Apply to the whole curve.
--
FirstParameter(myclass; C: Address from Standard)
returns Real from Standard;
---C++: inline
LastParameter(myclass; C: Address from Standard)
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: Address from Standard)
returns Shape from GeomAbs;
---Purpose:
---C++: inline
NbIntervals(myclass; C: Address from Standard)
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 : Address from Standard;
T : in out Array1OfReal from TColStd)
---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
GetInterval (myclass; C : Address from Standard
; Index : Integer from Standard
; Tab : Array1OfReal from TColStd
; U1, U2 : out Real from Standard);
---Purpose : output the bounds of interval of index <Index>
-- used if Type == Composite.
---C++: inline
IsClosed(myclass; C: Address from Standard)
returns Boolean from Standard;
---C++: inline
IsPeriodic(myclass; C: Address from Standard)
returns Boolean from Standard;
---C++: inline
Period(myclass; C: Address from Standard)
returns Real from Standard
raises DomainError from Standard; -- if the curve is not periodic
---C++: inline
Value(myclass; C: Address from Standard; U : Real)
returns Pnt2d from gp;
--- Purpose : Computes the point of parameter U on the curve.
---C++: inline
D0 (myclass; C : Address from Standard;
U : Real from Standard;
P : out Pnt2d from gp);
--- Purpose : Computes the point of parameter U on the curve.
---C++: inline
D1 (myclass; C : Address from Standard;
U : Real from Standard;
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.
---C++: inline
D2 (myclass; C : Address from Standard;
U : Real from Standard;
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.
---C++: inline
D3 (myclass; C : Address from Standard;
U : Real from Standard;
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.
---C++: inline
DN (myclass; C : Address from Standard;
U : Real from Standard;
N : Integer from Standard)
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.
---C++: inline
Resolution(myclass; C : Address from Standard;
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: Address from Standard)
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
TheType(myclass; C: Address from Standard)
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: Address from Standard) returns Lin2d from gp
raises NoSuchObject from Standard;
---C++: inline
Circle(myclass; C: Address from Standard) returns Circ2d from gp
raises NoSuchObject from Standard;
---C++: inline
Ellipse(myclass; C: Address from Standard) returns Elips2d from gp
raises NoSuchObject from Standard;
---C++: inline
Hyperbola(myclass; C: Address from Standard) returns Hypr2d from gp
raises NoSuchObject from Standard;
---C++: inline
Parabola(myclass; C: Address from Standard) returns Parab2d from gp
raises NoSuchObject from Standard;
---C++: inline
Bezier(myclass; C: Address from Standard)
returns BezierCurve from Geom2d
raises NoSuchObject from Standard;
---C++: inline
BSpline(myclass; C: Address from Standard)
returns BSplineCurve from Geom2d
raises NoSuchObject from Standard;
---C++: inline
EpsX(myclass; C:Address from Standard)
---C++: inline
returns Real from Standard;
NbSamples(myclass; C : Address from Standard;
U0,U1: Real from Standard)
returns Integer from Standard;
NbSamples(myclass; C: Address from Standard)
returns Integer from Standard;
end CurveTool;
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