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-- File: IntCurveSurface_QuadricCurveExactInter.cdl
-- Created: Wed Aug 18 18:50:09 1993
-- Author: Laurent BUCHARD
-- <lbr@nonox>
---Copyright: Matra Datavision 1993
generic class QuadricCurveExactInter from IntCurveSurface (
TheSurface as any;
TheSurfaceTool as any;
TheCurve as any;
TheCurveTool as any)
---Purpose: ---------------------------------------------------------
-- --
-- find a root (u,v,w) from a starting point (w0) of the problem :--
-- Q(X(w),Y(w),Z(w)) = 0 --
-- --
-- where Q(X,Y,Z) = 0 is the implicit expression of a quadric --
-- and (X(w),Y(w),Z(w)) the point of parameter w on a parametric --
-- curve. --
----------------------------------------------------------------------
uses
Quadric from IntSurf,
SequenceOfReal from TColStd
------------------------------------------------------------
class TheQuadCurvFunc instantiates QuadricCurveFunc from IntCurveSurface (
Quadric from IntSurf,
TheCurve,
TheCurveTool);
---Purpose: Provides the signed distance function : Q(w)
-- and its first derivative dQ(w)/dw
------------------------------------------------------------
is
Create(S: TheSurface; C: TheCurve)
---Purpose:
returns QuadricCurveExactInter from IntCurveSurface;
IsDone(me)
---Purpose:
returns Boolean from Standard
is static;
NbRoots(me)
---Purpose:
returns Integer from Standard
is static;
Root(me; Index: Integer from Standard)
---Purpose:
returns Real from Standard
is static;
NbIntervals(me)
---Purpose:
returns Integer from Standard
is static;
Intervals(me; Index: Integer from Standard;
U1,U2: out Real from Standard)
---Purpose: U1 and U2 are the parameters of
-- a segment on the curve.
is static;
fields
nbpnts : Integer from Standard;
pnts : SequenceOfReal from TColStd;
nbintv : Integer from Standard;
intv : SequenceOfReal from TColStd;
end QuadricCurveExactInter;
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