-- File:	PBRep_PointRepresentation.cdl
-- Created:	Wed Aug 11 11:34:20 1993
-- Author:	Remi LEQUETTE
--		<rle@phylox>
---Copyright:	 Matra Datavision 1993



deferred class PointRepresentation from PBRep inherits Persistent

	---Purpose: Root class for points representations.

uses
    Location from PTopLoc

is
    Initialize(P : Real;
    	       L : Location from PTopLoc);
    	---Level: Internal 
	       
    Location(me) returns Location from PTopLoc
    is static;
    	---Level: Internal 
		
    Parameter(me) returns Real
    is static;
    	---Level: Internal 
		
    Parameter(me : mutable; P : Real)
    is static;
    	---Level: Internal 
		
    Next(me) returns PointRepresentation from PBRep
    is static;
    	---Level: Internal 
		
    Next(me : mutable; N :  PointRepresentation from PBRep)
    is static;
    	---Level: Internal 

    ------------------------------------------------------
    -- What kind of representation : used to speed Mapping
    ------------------------------------------------------

    IsPointOnCurve(me)          returns Boolean
	---Purpose: A point on a 3d curve.
    is virtual;
	
    IsPointOnCurveOnSurface(me) returns Boolean
	---Purpose: A point on a 2d curve on a surface.
    is virtual;

    IsPointOnSurface(me)        returns Boolean
	---Purpose: A point on a surface.
    is virtual;
    
fields
    
    myLocation  : Location from PTopLoc;
    myParameter : Real;
    myNext      : PointRepresentation from PBRep;

end PointRepresentation;