-- File:	ProjLib_Sphere.cdl
-- Created:	Tue Aug 24 11:23:41 1993
-- Author:	Bruno DUMORTIER
--		<dub@topsn3>
---Copyright:	 Matra Datavision 1993

class Sphere from ProjLib inherits Projector from ProjLib

	---Purpose: Projects elementary curves on a sphere.

uses
    CurveType  from GeomAbs,
    Sphere     from gp,
    Lin        	   from gp,
    Circ       	   from gp,
    Elips      	   from gp,
    Parab      	   from gp,
    Hypr       	   from gp,
    Lin2d      from gp,
    Circ2d     from gp,
    Elips2d    from gp,
    Parab2d    from gp,
    Hypr2d     from gp

raises
    NoSuchObject from Standard

is

    Create returns Sphere from ProjLib;
	---Purpose: Undefined projection.

    Create(Sp : Sphere from gp) returns Sphere from ProjLib;
	---Purpose: Projection on the sphere <Sp>.

    Create(Sp : Sphere  from gp;
           C  : Circ from gp) returns Sphere from ProjLib;
	---Purpose: Projection of the circle <C> on the sphere <Sp>.



    Init(me : in out;
    	 Sp : Sphere from gp)
    is static;
	 
     Project(me : in out;
     	     L  : Lin from gp)
     is redefined;
 
    Project(me : in out;
    	    C  : Circ from gp)
    is redefined;

     Project(me : in out;
     	     E  : Elips from gp)
     is redefined;
 
     Project(me : in out;
     	     P  : Parab from gp)
     is redefined;
 
     Project(me : in out;
     	     H  : Hypr from gp)
     is redefined;
	     
    SetInBounds(me: in out;
    	    	U : Real from Standard)
    	---Purpose: Set the point of parameter U on C in the natural
    	--          restrictions of the sphere.
    is static;		
    

fields

    mySphere : Sphere from gp;

end Sphere;