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-- File: Geom2d_BoundedCurve.cdl
-- Created: Wed Mar 24 17:54:32 1993
-- Author: JCV
-- <fid@sdsun2>
-- Copyright: Matra Datavision 1993
---Copyright: Matra Datavision 1991
deferred class BoundedCurve from Geom2d inherits Curve from Geom2d
--- Purpose : The abstract class BoundedCurve describes the
-- common behavior of bounded curves in 2D space. A
-- bounded curve is limited by two finite values of the
-- parameter, termed respectively "first parameter" and
-- "last parameter". The "first parameter" gives the "start
-- point" of the bounded curve, and the "last parameter"
-- gives the "end point" of the bounded curve.
-- The length of a bounded curve is finite.
-- The Geom2d package provides three concrete
-- classes of bounded curves:
-- - two frequently used mathematical formulations of complex curves:
-- - Geom2d_BezierCurve,
-- - Geom2d_BSplineCurve, and
-- - Geom2d_TrimmedCurve to trim a curve, i.e. to
-- only take part of the curve limited by two values of
-- the parameter of the basis curve.
uses Pnt2d from gp
is
EndPoint (me) returns Pnt2d is deferred;
--- Purpose :
-- Returns the end point of the curve.
-- The end point is the value of the curve for the
-- "LastParameter" of the curve.
StartPoint (me) returns Pnt2d is deferred;
--- Purpose :
-- Returns the start point of the curve.
-- The start point is the value of the curve for the
-- "FirstParameter" of the curve.
end;
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