-- File:	PBRep_CurveRepresentation.cdl
-- Created:	Mon Jul  5 19:27:07 1993
-- Author:	Remi LEQUETTE
--		<rle@phylox>
-- Update:      Frederic MAUPAS
--              <fma@pronox>
---Copyright:	 Matra Datavision 1993



deferred class CurveRepresentation from PBRep inherits Persistent

	---Purpose: Root class for the curve representations.

uses
    Location from PTopLoc


is

    Initialize(L : Location from PTopLoc);
    	---Level: Internal 

    Location(me) returns Location from PTopLoc
    is static;
    	---Level: Internal 
    
    Next(me) returns CurveRepresentation from PBRep
    is static;
    	---Level: Internal 
		
    Next(me : mutable; N :  CurveRepresentation from PBRep)
    is static;
    	---Level: Internal 

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

    IsCurve3D(me)               returns Boolean
	 ---Purpose: A 3D curve representation.
    is virtual;

    IsCurveOnSurface(me)        returns Boolean
	---Purpose: A curve in the parametric space of a surface.
    is virtual;

    IsRegularity(me)            returns Boolean
	---Purpose: A continuity between two surfaces.
    is virtual;
    
    IsCurveOnClosedSurface(me)  returns Boolean
	---Purpose: A curve with two parametric   curves  on the  same
	--          surface. 
    is virtual;

    IsGCurve(me) returns Boolean from Standard
    	---Purpose:
    is virtual;
    
    IsPolygon3D(me) returns Boolean
	---Purpose: 
    is virtual;
    
    IsPolygonOnTriangulation(me) returns Boolean
	---Purpose: 
    is virtual;

    IsPolygonOnClosedTriangulation(me) returns Boolean
	---Purpose: 
    is virtual;

    IsPolygonOnSurface(me) returns Boolean
	---Purpose: 
    is virtual;

    IsPolygonOnClosedSurface(me) returns Boolean
	---Purpose: 
    is virtual;
    
    
fields
    
    myLocation : Location from PTopLoc;
    myNext     : CurveRepresentation from PBRep;

end CurveRepresentation;