-- Created on: 1993-07-06
-- Created by: Remi LEQUETTE
-- Copyright (c) 1993-1999 Matra Datavision
-- Copyright (c) 1999-2012 OPEN CASCADE SAS
--
-- The content of this file is subject to the Open CASCADE Technology Public
-- License Version 6.5 (the "License"). You may not use the content of this file
-- except in compliance with the License. Please obtain a copy of the License
-- at http://www.opencascade.org and read it completely before using this file.
--
-- The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
-- main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
--
-- The Original Code and all software distributed under the License is
-- distributed on an "AS IS" basis, without warranty of any kind, and the
-- Initial Developer hereby disclaims all such warranties, including without
-- limitation, any warranties of merchantability, fitness for a particular
-- purpose or non-infringement. Please see the License for the specific terms
-- and conditions governing the rights and limitations under the License.




class CurveOnSurface from BRep inherits GCurve from BRep

	---Purpose: Representation  of a  curve   by a   curve  in the
	--          parametric space of a surface.

uses
    Pnt                 from gp,
    Pnt2d               from gp,
    Box2d               from Bnd,
    Curve               from Geom2d,
    Surface             from Geom,
    Location            from TopLoc,
    CurveRepresentation from BRep

is

    Create(PC : Curve    from Geom2d; 
    	   S  : Surface  from Geom; 
    	   L  : Location from  TopLoc)
    returns mutable CurveOnSurface from BRep;

    SetUVPoints(me : mutable; P1, P2 : Pnt2d from gp)
	---C++: inline
    is static;

    UVPoints(me; P1, P2 : out Pnt2d from gp)
	---C++: inline
    is static;
    
    D0(me; U : Real; P : out Pnt from gp);
	---Purpose: Computes the point at parameter U.

    IsCurveOnSurface(me) returns Boolean
	---Purpose: Returns True.
    is redefined;
    
    IsCurveOnSurface(me; S : Surface from Geom; L : Location from TopLoc) 
    returns Boolean
	---Purpose: A curve in the parametric space of a surface.
    is redefined;
    
    Surface(me) returns any Surface from Geom
	---C++: return const &
    is redefined;

    PCurve(me) returns any Curve from Geom2d
	---C++: return const &
    is redefined;

    PCurve(me : mutable; C : Curve from Geom2d)
    is redefined;

    Copy(me) returns mutable CurveRepresentation from BRep is virtual;
	---Purpose: Return a copy of this representation.

    Update(me : mutable)
	---Purpose: Recomputes any derived data after a modification.
	--          This is called when the range is modified.
    is redefined;

fields
    
    myPCurve      : Curve from Geom2d;
    mySurface     : Surface from Geom;
    myUV1         : Pnt2d from gp  is protected;
    myUV2         : Pnt2d from gp  is protected;

end CurveOnSurface;