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-- File: MakeArcOfEllipse.cdl
-- Created: Mon Sep 28 11:50:29 1992
-- Author: Remi GILET
-- <reg@sdsun2>
---Copyright: Matra Datavision 1992
class MakeArcOfEllipse from GCE2d inherits Root from GCE2d
---Purpose: Implements construction algorithms for an arc of
-- ellipse in the plane. The result is a Geom2d_TrimmedCurve curve.
-- A MakeArcOfEllipse object provides a framework for:
-- - defining the construction of the arc of ellipse,
-- - implementing the construction algorithm, and
-- - consulting the results. In particular, the Value
-- function returns the constructed arc of ellipse.
uses Pnt2d from gp,
Elips2d from gp,
Real from Standard,
Boolean from Standard,
TrimmedCurve from Geom2d
raises NotDone from StdFail
is
Create(Elips : Elips2d from gp ;
Alpha1, Alpha2 : Real from Standard ;
Sense : Boolean from Standard = Standard_True)
returns MakeArcOfEllipse;
---Purpose: Make an arc of Ellipse (TrimmedCurve from Geom2d) from
-- a Ellipse between two parameters Alpha1 and Alpha2.
Create(Elips : Elips2d from gp ;
P : Pnt2d from gp ;
Alpha : Real from Standard ;
Sense : Boolean from Standard = Standard_True)
returns MakeArcOfEllipse;
---Purpose: Make an arc of Ellipse (TrimmedCurve from Geom2d) from
-- a Ellipse between point <P> and the parameter
-- Alpha.
Create(Elips : Elips2d from gp ;
P1 : Pnt2d from gp ;
P2 : Pnt2d from gp ;
Sense : Boolean from Standard = Standard_True)
returns MakeArcOfEllipse;
---Purpose: Make an arc of Ellipse (TrimmedCurve from Geom2d) from
-- a Ellipse between two points P1 and P2.
-- Please, note: The orientation of the arc is:
-- - the trigonometric sense if Sense is not defined or
-- is true (default value), or
-- - the opposite sense if Sense is false.
-- - Alpha1, Alpha2 and Alpha are angle values, given in radians.
-- - IsDone always returns true.
Value(me) returns TrimmedCurve from Geom2d
raises NotDone
is static;
---C++: return const&
---Purpose: Returns the constructed arc of ellipse.
Operator(me) returns TrimmedCurve from Geom2d
is static;
---C++: return const&
---C++: alias "Standard_EXPORT operator Handle_Geom2d_TrimmedCurve() const;"
fields
TheArc : TrimmedCurve from Geom2d;
--The solution from Geom2d.
end MakeArcOfEllipse;
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