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-- File: QualifiedCurve.cdl
-- Created: Mon Apr 15 15:34:24 1991
-- Author: Philippe DAUTRY
-- <fid@phobox>
---Copyright: Matra Datavision 1991
class QualifiedCurve from Geom2dGcc
---Purpose: Describes functions for building a qualified 2D curve.
-- A qualified 2D curve is a curve with a qualifier which
-- specifies whether the solution of a construction
-- algorithm using the qualified curve (as an argument):
-- - encloses the curve, or
-- - is enclosed by the curve, or
-- - is built so that both the curve and it are external to one another, or
-- - is undefined (all solutions apply).
-- inherits Entity from Standard
uses Position from GccEnt,
Curve from Geom2dAdaptor
-- raises
is
Create(Curve : Curve from Geom2dAdaptor;
Qualifier : Position from GccEnt )
returns QualifiedCurve from Geom2dGcc;
---Purpose: Constructs a qualified curve by assigning the qualifier
-- Qualifier to the curve Curve. Qualifier may be:
-- - GccEnt_enclosing if the solution of a construction
-- algorithm using the qualified curve encloses the curve, or
-- - GccEnt_enclosed if the solution is enclosed by the curve, or
-- - GccEnt_outside if both the solution and the curve
-- are external to one another, or
-- - GccEnt_unqualified if all solutions apply.
-- Note: The interior of a curve is defined as the left-hand
-- side of the curve in relation to its orientation.
-- Warning
-- Curve is an adapted curve, i.e. an object which is an interface between:
-- - the services provided by a 2D curve from the package Geom2d,
-- - and those required on the curve by a computation algorithm.
-- The adapted curve is created in the following way:
-- Handle(Geom2d_Curve) mycurve = ... ;
-- Geom2dAdaptor_Curve Curve ( mycurve ) ;
-- The qualified curve is then constructed with this object:
-- GccEnt_Position myQualif = GccEnt_outside ;
-- Geom2dGcc_QualifiedCurve myQCurve ( Curve, myQualif );
-- is private;
Qualified(me) returns Curve from Geom2dAdaptor
is static;
---Purpose: Returns a 2D curve to which the qualifier is assigned.
-- Warning
-- The returned curve is an adapted curve, i.e. an object
-- which is an interface between:
-- - the services provided by a 2D curve from the package Geom2d,
-- - and those required on the curve by a computation algorithm.
-- The Geom2d curve on which the adapted curve is
-- based can be obtained in the following way:
-- myQualifiedCurve = ... ;
-- Geom2dAdaptor_Curve myAdaptedCurve = myQualifiedCurve.Qualified();
-- Handle(Geom2d_Curve) = myAdaptedCurve.Curve();
Qualifier(me) returns Position from GccEnt
is static;
---Purpose: Returns
-- - the qualifier of this qualified curve if it is enclosing,
-- enclosed or outside, or
-- - GccEnt_noqualifier if it is unqualified.
IsUnqualified(me) returns Boolean from Standard
is static;
---Purpose: Returns true if the solution is unqualified and false in the other cases.
IsEnclosing(me) returns Boolean from Standard
is static;
---Purpose: It returns true if the solution is Enclosing the Curv and false in
-- the other cases.
IsEnclosed(me) returns Boolean from Standard
is static;
---Purpose: It returns true if the solution is Enclosed in the Curv and false in
-- the other cases.
IsOutside(me) returns Boolean from Standard
is static;
---Purpose: It returns true if the solution is Outside the Curv and false in
-- the other cases.
fields
TheQualifier : Position from GccEnt;
TheQualified : Curve from Geom2dAdaptor;
-- friends
-- Unqualified(Obj : Curve3) from Geom2dGcc,
-- Enclosing (Obj : Curve3) from Geom2dGcc,
-- Enclosed (Obj : Curve3) from Geom2dGcc,
-- Outside (Obj : Curve3) from Geom2dGcc
end QualifiedCurve;
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