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-- File: IntersectionSegment.cdl
-- Created: Fri Apr 3 14:45:13 1992
-- Author: Laurent BUCHARD
-- <lbr@topsn2>
---Copyright: Matra Datavision 1992
class IntersectionSegment from IntRes2d
---Purpose: Definition of an intersection curve between
-- two 2D curves.
inherits Storable from Standard
uses IntersectionPoint from IntRes2d
raises DomainError from Standard
is
Create
---Purpose: Empty constructor.
returns IntersectionSegment from IntRes2d;
Create(P1,P2 : IntersectionPoint from IntRes2d;
Oppos : Boolean from Standard;
ReverseFlag : Boolean from Standard)
--Purpose: Creates an IntersectionSegment from two
-- IntersectionPoint. Oppos is True if the 2 curves
-- have the same orientation. if ReverseFlag is True,
-- P1 and P2 are the point on the first curve, and on
-- the second curve. else, P1 is the point on the
-- second curve and P2 the intersection point on the
-- first curve.
---C++: inline
returns IntersectionSegment from IntRes2d;
Create(P : IntersectionPoint from IntRes2d;
First : Boolean from Standard;
Oppos : Boolean from Standard;
ReverseFlag: Boolean from Standard)
--Purpose: Creates a semi-infinite segment of intersection.
-- if First is set to True, P is the first point of
-- the segment. Otherwise P is the last point of the
-- segment. P belongs to the first curve if
-- ReversedFlag is set to False; otherwise it belongs
-- to the second curve.
---C++: inline
returns IntersectionSegment from IntRes2d;
Create(Oppos: Boolean from Standard)
---Purpose: Creates an infinite segment of intersection.
---C++: inline
returns IntersectionSegment from IntRes2d;
IsOpposite(me)
---Purpose: Returns TRUE if the intersection segment has got
-- the same orientation on both curves.
---C++: inline
returns Boolean from Standard
is static;
HasFirstPoint(me)
---Purpose: Returns True if the segment is limited by a first
-- point. This point defines the lowest parameter
-- admitted on the first curve for the segment. If
-- IsOpposite returns False, it defines the lowest
-- parameter on the second curve, otherwise, it is
-- the highest parameter on the second curve.
---C++: inline
returns Boolean from Standard
is static;
FirstPoint(me)
---Purpose: Returns the first point of the segment as an
-- IntersectionPoint (with a transition). The
-- exception DomainError is raised if HasFirstPoint
-- returns False.
---C++: inline
---C++: return const &
returns IntersectionPoint from IntRes2d
raises DomainError from Standard
is static;
HasLastPoint(me)
---Purpose: Returns True if the segment is limited by a last
-- point. This point defines the highest parameter
-- admitted on the first curve for the segment. If
-- IsOpposite returns False, it defines the highest
-- parameter on the second curve, otherwise, it is
-- the lowest parameter on the second curve.
---C++: inline
returns Boolean from Standard
is static;
LastPoint(me)
---Purpose: Returns the last point of the segment as an
-- IntersectionPoint (with a transition). The
-- exception DomainError is raised if
-- HasLastExtremity returns False.
---C++: inline
---C++: return const &
returns IntersectionPoint from IntRes2d
raises DomainError from Standard
is static;
fields
oppos : Boolean from Standard;
first : Boolean from Standard;
last : Boolean from Standard;
ptfirst : IntersectionPoint from IntRes2d;
ptlast : IntersectionPoint from IntRes2d;
end IntersectionSegment;
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