-- 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;