-- 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;