-- File:	PGeom_Parabola.cdl
-- Created:	Mon Feb 22 18:41:48 1993
-- Author:	Philippe DAUTRY
--		<fid@phobox>
-- Copyright:	 Matra Datavision 1993


class Parabola from PGeom
inherits Conic from PGeom 

        --- Purpose :
        --  Defines the parabola in the parameterization range  :
        --  ]-infinite,+infinite[
        --  
	--  See Also : Parabola from Geom.

uses  Ax2 from gp 

is


  Create returns mutable Parabola from PGeom;
        ---Purpose : Creates a parabola with default values.
    	---Level: Internal 


  Create (aPosition : Ax2 from gp; aFocalLength : Real)
    returns mutable Parabola from PGeom;
	---Purpose : Creates a Parabola with <aPosition> and <aFocalLength>
	--         as field values.
    	---Level: Internal 


  FocalLength (me : mutable; aFocalLength : Real);
        ---Purpose :   Set the value  of   the  field focalLength with
        --         <aFocalLength>.
    	---Level: Internal 


  FocalLength (me)  returns Real;
	---Purpose : Retruns the value of the field focalLength.
    	---Level: Internal 


fields

  focalLength : Real;

end;