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-- File: ImpTool.cdl
-- Created: Thu Mar 26 14:24:05 1992
-- Author: Laurent BUCHARD
-- <lbr@topsn3>
---Copyright: Matra Datavision 1992
deferred class ImpTool from IntImpParGen
---Purpose: Template class for an implicit curve.
uses Pnt2d from gp,
Vec2d from gp
is
Value (me; U: Real from Standard)
--Purpose: Computes the point at parameter U on the
-- Implicit Curve.
returns Pnt2d from gp
is static;
D1 (me; U: Real from Standard ; P: out Pnt2d; T: out Vec2d)
--Purpose: Computes the first derivative and the point on the
-- implicit curve at parameter U.
is static;
D2 (me; U: Real from Standard ; P: out Pnt2d; T,N: out Vec2d)
--Purpose: Computes the first, the second derivatives
-- and the point on the implicit curve at parameter U.
is static;
Distance(me; P: Pnt2d from gp)
---Purpose: Computes the value of the signed distance between
-- the point P and the implicit curve.
--
returns Real from Standard
is static;
GradDistance(me; P: Pnt2d from gp)
---Purpose: Computes the Gradient of the Signed Distance
-- between a point and the implicit curve, at the
-- point P.
--
returns Vec2d from gp
is static;
FindParameter(me; P: Pnt2d from gp)
---Purpose: Returns the parameter U of the point on the
-- implicit curve corresponding to the point P.
-- The correspondance between P and the point P(U) on
-- the implicit curve must be coherent with the way
-- of determination of the signed distance.
returns Real from Standard
is static;
end ImpTool;
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