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-- File: PConicTool.cdl
-- Created: Thu Mar 26 16:22:34 1992
-- Author: Laurent BUCHARD
-- <lbr@topsn3>
---Copyright: Matra Datavision 1992
private class PConicTool from IntCurve
---Purpose: Implementation of the ParTool from IntImpParGen
-- for conics of gp, using the class PConic from IntCurve.
---Level: Internal
uses Pnt2d from gp,
Vec2d from gp,
Lin2d from gp,
XY from gp,
PConic from IntCurve
is
EpsX (myclass; C: PConic)
--Purpose: Tolerance used by mathematical algorithms
-- usually about 1e-10
returns Real from Standard;
NbSamples(myclass; C: PConic)
--Purpose: returns the number of samples on the parametric curve
returns Integer from Standard;
NbSamples(myclass; C: PConic; U0,U1: Real from Standard)
--Purpose: returns the number of samples on the parametric curve
returns Integer from Standard;
Value (myclass; C: PConic from IntCurve; X: Real from Standard)
--Purpose: Returns the geometric point which lies at the
-- parameter x on the parametric curve.
returns Pnt2d from gp;
D1 (myclass; C: PConic from IntCurve; U: Real from Standard ;
P: out Pnt2d; T: out Vec2d);
--Purpose: Computes the Value, First and Second Derivative at
-- the parameter U on the curve.
D2 (myclass; C: PConic from IntCurve; U: Real from Standard ;
P: out Pnt2d; T,N: out Vec2d);
--Purpose: Computes the Value, First and Second Derivative at
-- the parameter U on the curve.
end PConicTool;
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