-- File:	BRepAlgo_BooleanOperation.cdl
-- Created:	Thu Oct 14 18:14:43 1993
-- Author:	Remi LEQUETTE
--		<rle@phylox>
---Copyright:	 Matra Datavision 1993

deferred class BooleanOperation from BRepAlgo inherits MakeShape from BRepBuilderAPI

    	---Purpose:  The abstract class BooleanOperation is the root
    	-- class of Boolean operations.
    	-- A BooleanOperation object stores the two shapes in
    	-- preparation for the Boolean operation specified in
    	-- one of the classes inheriting from this one. These include:
    	-- - Common
    	-- - Cut
    	-- - Fuse
    	-- - Section.

uses

    State from TopAbs,
    Shape from TopoDS,
    Face from TopoDS,
    Edge from TopoDS,
    MapOfShape from TopTools,
    DataMapOfShapeShape from TopTools,
    ListOfShape from TopTools,
    HBuilder from TopOpeBRepBuild,
    ShapeModification from BRepBuilderAPI
    
is

    Initialize (S1,S2 : Shape from TopoDS);
    ---Purpose: Prepares the operations for S1 and S2.

--modified by NIZNHY-PKV Sun Dec 15 17:16:48 2002  f     
    Delete(me:  out)   
    	is  redefined  virtual; 
    ---C++:  alias  "Standard_EXPORT virtual ~BRepAlgo_BooleanOperation() {Delete();}"
--modified by NIZNHY-PKV Sun Dec 15 17:16:51 2002  t

    PerformDS(me : in out)
    ---Purpose: 
    ---Level: Public
    is static;

    Perform(me : in out; St1,St2 : State from TopAbs)
    ---Level: Public
    is static;
    
    Builder(me) returns HBuilder from TopOpeBRepBuild
    ---Level: Advanced
    is static;
    
    Shape1(me) returns Shape from TopoDS
    ---Purpose: Returns the first shape involved in this Boolean operation.
    ---C++: return const &
    ---Level: Public
    is static;

    Shape2(me) returns Shape from TopoDS
    ---Purpose: Returns the second shape involved in this Boolean operation.
    ---C++: return const &
    ---Level: Public
    is static;
    
    BuilderCanWork(me : in out; B : Boolean from Standard)
    is protected;
    
    BuilderCanWork(me) returns Boolean from Standard
    is protected;
    
       
    InitParameters(me : out)
    ---Purpose: 
    ---Level: Private
    is virtual protected;

---Category: Querying

    Modified (me: in out; S : Shape from TopoDS)
    	---Purpose: Returns the list  of shapes modified from the shape
    	--          <S>. 
        ---C++: return const & 
        ---Level: Public
    returns ListOfShape from TopTools
    is redefined virtual;


    IsDeleted (me: in out; S : Shape from TopoDS)
    returns Boolean
    is redefined virtual;


fields

    myHBuilder : HBuilder    from TopOpeBRepBuild is protected;
    myS1 : Shape from TopoDS is protected;
    myS2 : Shape from TopoDS is protected;
    myMap : MapOfShape from TopTools;
    myBuilderCanWork : Boolean from Standard;    
    topToSew      : DataMapOfShapeShape from TopTools;
    
end BooleanOperation;