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-- File: Extrema_GLocateExtCC2d.cdl
-- Created: Wed Jul 6 15:45:52 1994
-- Author: Laurent PAINNOT
-- <lpa@metrox>
---Copyright: Matra Datavision 1994
generic class GLocateExtCC2d from Extrema (Curve1 as any;
Tool1 as any;
Curve2 as any;
Tool2 as any)
---Purpose: It calculates the distance between two curves with
-- a close point; these distances can be maximum or
-- minimum.
uses POnCurv2d from Extrema,
Pnt2d from gp,
Vec2d from gp,
HArray1OfPnt2d from TColgp
raises DomainError from Standard,
NotDone from StdFail
class LCCache2d instantiates CurveCache from Extrema (Curve1, Pnt2d from gp, HArray1OfPnt2d from TColgp);
class ELCC2d instantiates GenExtCC from Extrema
(Curve1,
Tool1,
Curve2,
Tool2,
LCCache2d,
HArray1OfPnt2d from TColgp,
POnCurv2d,
Pnt2d,
Vec2d);
class LocECC2d instantiates GenLocateExtCC from Extrema
(Curve1,
Tool1,
Curve2,
Tool2,
POnCurv2d,
Pnt2d,
Vec2d);
is
Create (C1: Curve1; C2: Curve2; U0,V0: Real)
returns GLocateExtCC2d
---Purpose: Calculates the distance with a close point. The
-- close point is defined by a parameter value on each
-- curve.
-- The function F(u,v)=distance(C1(u),C2(v)) has an
-- extremun when gradient(f)=0. The algorithm searchs
-- the zero near the close point.
raises DomainError;
-- if U0 and V0 are outside the definition ranges of the
-- curves.
IsDone (me) returns Boolean
---Purpose: Returns True if the distance is found.
is static;
SquareDistance (me) returns Real
---Purpose: Returns the value of the extremum square distance.
raises NotDone from StdFail
-- if IsDone(me)=False.
is static;
Point (me; P1,P2: out POnCurv2d)
---Purpose: Returns the points of the extremum distance.
-- P1 is on the first curve, P2 on the second one.
raises NotDone from StdFail
-- if IsDone(me)=False.
is static;
fields
myDone : Boolean;
mySqDist: Real;
myPoint1: POnCurv2d;
myPoint2: POnCurv2d;
end GLocateExtCC2d;
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