-- File:	BooleanOperations_OnceExplorer.cdl
-- Created:	Thu Sep  7 14:37:43 2000
-- Author:	Vincent DELOS
--		<vds@bulox.paris1.matra-dtv.fr>
---Copyright:	 Matra Datavision 2000


class OnceExplorer from BooleanOperations  
    inherits Explorer from BooleanOperations

	---Purpose: 

uses
    Shape     from TopoDS,
    ShapeEnum from TopAbs,
    ShapesDataStructure from BooleanOperations,
    PShapesDataStructure from BooleanOperations

--raises

is
    Create (SDS: ShapesDataStructure)  
    	returns OnceExplorer from BooleanOperations;
--modified by NIZNHY-PKV Sun Dec 15 16:24:39 2002  f 
    Delete(me:  out)  
    	is redefined virtual; 
    ---C++:  alias  "Standard_EXPORT virtual ~BooleanOperations_OnceExplorer()  {Delete();}"
--modified by NIZNHY-PKV Sun Dec 15 16:24:42 2002  t
    
    Init (me:in out;  
    	    aShape: Integer;  
    	    TargetToFind: ShapeEnum;  
    	    TargetToAvoid: ShapeEnum = TopAbs_SHAPE) is redefined;
    
    Next (me:in out)  
    	is redefined;
    	
    Current (me:in out)  
    	returns Integer is redefined;

    Dump (me; S : in out OStream)  
    	is redefined; 


fields

    myArrayOfBits : Address;
    ---Purpose: to say if we already visited a shape.
    mySizeOfArrayOfBits : Integer;
    ---Purpose: the size of <myArrayOfBits>.

end OnceExplorer;