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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 GC inherits Root from GC
---Purpose: Implements construction algorithms for an arc
-- of ellipse in 3D space. The result is a Geom_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 Pnt from gp,
Elips from gp,
Dir from gp,
Ax1 from gp,
Real from Standard,
TrimmedCurve from Geom
raises NotDone from StdFail
is
Create(Elips : Elips from gp ;
Alpha1, Alpha2 : Real from Standard ;
Sense : Boolean from Standard ) returns MakeArcOfEllipse;
---Purpose: Constructs an arc of Ellipse (TrimmedCurve from Geom) from
-- a Ellipse between two parameters Alpha1 and Alpha2.
Create(Elips : Elips from gp ;
P : Pnt from gp ;
Alpha : Real from Standard ;
Sense : Boolean from Standard ) returns MakeArcOfEllipse;
---Purpose: Constructs an arc of Ellipse (TrimmedCurve from Geom) from
-- a Ellipse between point <P> and the angle Alpha
-- given in radians.
Create(Elips : Elips from gp ;
P1 : Pnt from gp ;
P2 : Pnt from gp ;
Sense : Boolean from Standard ) returns MakeArcOfEllipse;
---Purpose: Constructs an arc of Ellipse (TrimmedCurve from Geom) from
-- a Ellipse between two points P1 and P2.
-- The orientation of the arc of ellipse is:
-- - the sense of Elips if Sense is true, or
-- - the opposite sense if Sense is false.
-- Notes:
-- - Alpha1, Alpha2 and Alpha are angle values, given in radians.
-- - IsDone always returns true.
Value(me) returns TrimmedCurve from Geom
raises NotDone
is static;
---C++: return const&
---Purpose: Returns the constructed arc of ellipse.
Operator(me) returns TrimmedCurve from Geom
is static;
---C++: return const&
---C++: alias "Standard_EXPORT operator Handle_Geom_TrimmedCurve() const;"
fields
TheArc : TrimmedCurve from Geom;
--The solution from Geom.
end MakeArcOfEllipse;
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