-- File:	HLRAlgo_EdgeIterator.cdl
-- Created:	Mon Jan 11 13:58:26 1993
-- Author:	Christophe MARION
--		<cma@sdsun1>
---Copyright:	 Matra Datavision 1993

class EdgeIterator from HLRAlgo

uses
    EdgeStatus from HLRAlgo,
    Address    from Standard,
    Integer    from Standard,
    Boolean    from Standard,
    ShortReal  from Standard,
    Real       from Standard

is
    Create returns EdgeIterator from HLRAlgo;
	---Purpose: Iterator  on the  visible or  hidden  parts of  an
	--          edge.
    
    InitHidden(me : in out; status : EdgeStatus from HLRAlgo)
    is static;
    
    MoreHidden(me) returns Boolean from Standard
    	---C++: inline
    is static;
    
    NextHidden(me : in out)
    is static;
    
    Hidden(me; Start    : out Real      from Standard;
               TolStart : out ShortReal from Standard;
               End      : out Real      from Standard;
               TolEnd   : out ShortReal from Standard)
	---C++: inline
	---Purpose: Returns the bounds and the tolerances
	--          of the current Hidden Interval
    is static;
    
    InitVisible(me : in out; status : EdgeStatus from HLRAlgo)
	---C++: inline
    is static;
    
    MoreVisible(me) returns Boolean from Standard
    	---C++: inline
    is static;
    
    NextVisible(me : in out)
	---C++: inline
    is static;
    
    Visible(me : in out;
            Start    : out Real      from Standard;
            TolStart : out ShortReal from Standard;
            End      : out Real      from Standard;
            TolEnd   : out ShortReal from Standard)
	---C++: inline
	---Purpose: Returns the bounds and the tolerances
	--          of the current Visible Interval
    is static;
    
fields
    myNbVis       : Integer   from Standard;
    myNbHid       : Integer   from Standard;
    EVis          : Address   from Standard;
    EHid          : Address   from Standard;
    iVis          : Integer   from Standard;
    iHid          : Integer   from Standard;
    myHidStart    : Real      from Standard;
    myHidEnd      : Real      from Standard;
    myHidTolStart : ShortReal from Standard;
    myHidTolEnd   : ShortReal from Standard;

end EdgeIterator;