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-- File: BRepGProp_EdgeTool.cdl
-- Created: Tue Dec 7 10:39:08 1993
-- Author: Modelistation
-- <model@zerox>
---Copyright: Matra Datavision 1993
class EdgeTool from BRepGProp
--- Purpose : Provides the required methods to instantiate
-- CGProps from GProp with a Curve from BRepAdaptor.
uses Pnt from gp,
Vec from gp,
Curve from BRepAdaptor,
Shape from GeomAbs,
Array1OfReal from TColStd
raises
OutOfRange from Standard
is
FirstParameter (myclass; C : Curve from BRepAdaptor) returns Real;
--- Purpose :
-- Returns the parametric value of the start point of
-- the curve. The curve is oriented from the start point
-- to the end point.
LastParameter (myclass; C : Curve from BRepAdaptor) returns Real;
--- Purpose :
-- Returns the parametric value of the end point of
-- the curve. The curve is oriented from the start point
-- to the end point.
IntegrationOrder (myclass; C : Curve from BRepAdaptor) returns Integer;
--- Purpose :
-- Returns the number of Gauss points required to do
-- the integration with a good accuracy using the
-- Gauss method. For a polynomial curve of degree n
-- the maxima of accuracy is obtained with an order
-- of integration equal to 2*n-1.
Value (myclass; C : Curve from BRepAdaptor; U : Real) returns Pnt;
--- Purpose : Returns the point of parameter U on the loaded curve.
D1 (myclass; C : Curve from BRepAdaptor; U: Real; P: out Pnt; V1: out Vec);
--- Purpose :
-- Returns the point of parameter U and the first derivative
-- at this point.
NbIntervals(myclass; C : Curve from BRepAdaptor; S : Shape from GeomAbs)
---Purpose: Returns the number of intervals for continuity
-- <S>. May be one if Continuity(me) >= <S>
returns Integer;
Intervals(myclass; C : 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;
end EdgeTool;
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