-- File:	BRepLib_MakeShape.cdl
-- Created:	Wed Jul 21 18:15:13 1993
-- Author:	Remi LEQUETTE
--		<rle@nonox>
---Copyright:	 Matra Datavision 1993


deferred class MakeShape from BRepLib inherits Command from BRepLib

	---Purpose: This    is  the  root     class for     all  shape
	--          constructions.  It stores the result.
	--          
	--          It  provides deferred methods to trace the history
	--          of sub-shapes.

uses
    Shape             from TopoDS,
    Face              from TopoDS,
    Edge              from TopoDS,
    ShapeModification from BRepLib,
    ListOfShape       from TopTools
    
    
raises
    NotDone           from StdFail

is
    Initialize;
    
    Build(me : in out);
	---Purpose: This is  called by  Shape().  It does  nothing but
	--          may be redefined.
	---Level: Public
	
    Shape(me) returns Shape from TopoDS
	---C++: return const &
	---C++: alias "Standard_EXPORT operator TopoDS_Shape() const;"
	---Level: Public
    raises
    	NotDone from StdFail
    is static;


    -----------------------------------------------------------
    --- the following methods do nothing and must be redefined
    --- for faces creations.

    FaceStatus(me; F: Face from TopoDS) 
    	---Purpose: returns the status of the Face after
    	--          the shape creation. 
	---Level: Public
    returns ShapeModification from BRepLib
    is virtual;
    
    
    HasDescendants(me; F: Face from TopoDS)
    	---Purpose: Returns True if the Face generates new topology.
	---Level: Public
    returns Boolean from Standard
    is virtual;


    DescendantFaces(me: in out; F: Face from TopoDS)
    	---Purpose: returns the list of generated Faces.
    	---C++:     return const &
	---Level: Public
    returns ListOfShape from TopTools
    is virtual;
    
    
    NbSurfaces(me)
    	---Purpose: returns the number of surfaces
    	--          after the shape creation.
	---Level: Public
    returns Integer from Standard
    is virtual;


    NewFaces(me: in out; I: Integer from Standard) 
    	---Purpose: Return the faces created for surface I.
    	---C++:     return const &
	---Level: Public
    returns ListOfShape from TopTools
    is virtual;


    FacesFromEdges(me: in out; E: Edge from TopoDS)
    	---Purpose: returns a list of the created faces
    	--          from the edge <E>.
    	---C++:     return const &
	---Level: Public
    returns ListOfShape from TopTools
    is virtual;

    
fields
 
    myShape   : Shape         from TopoDS   is protected;
    myGenFaces: ListOfShape   from TopTools is protected;
    myNewFaces: ListOfShape   from TopTools is protected;
    myEdgFaces: ListOfShape   from TopTools is protected;
    
end MakeShape;