-- File:	HLRBRep_VertexList.cdl
-- Created:	Thu Apr 17 20:04:00 1997
-- Author:	Christophe MARION
--		<cma@partox.paris1.matra-dtv.fr>
---Copyright:	 Matra Datavision 1997

class VertexList from HLRBRep

uses
	Orientation                    from TopAbs,
        Intersection                   from HLRAlgo,
        Interference                   from HLRAlgo,
	ListIteratorOfInterferenceList from HLRAlgo,
	EdgeInterferenceTool           from HLRBRep 
is

    Create(T : EdgeInterferenceTool from HLRBRep;
           I : ListIteratorOfInterferenceList from HLRAlgo)
    returns VertexList from HLRBRep;

    IsPeriodic(me) returns Boolean from Standard
        ---Purpose: Returns True when the curve is periodic.
    is static;
    
    More(me) returns Boolean from Standard
        ---Purpose: Returns True when there are more vertices.
    is static;
    
    Next(me : in out)
        ---Purpose: Proceeds to the next vertex.
    is static;
    
    Current(me) returns Intersection from HLRAlgo
        ---Purpose: Returns the current vertex
        --          
	---C++: return const &
    is static;
    
    IsBoundary(me) returns Boolean from Standard
        ---Purpose: Returns True  if the current  vertex  is is on the
        --          boundary of the edge.
    is static;
    
    IsInterference(me) returns Boolean from Standard
        ---Purpose: Returns  True   if   the current    vertex  is  an
        --          interference. 
    is static;
    
    Orientation(me) returns Orientation from TopAbs
        ---Purpose: Returns the  orientation of the  current vertex if
        --          it is on the boundary of the edge.
    is static;
    
    Transition(me) returns Orientation from TopAbs
        ---Purpose: Returns  the transition  of the  current vertex if
        --          it is an interference.
    is static;
    
    BoundaryTransition(me) returns Orientation from TopAbs
        ---Purpose: Returns  the  transition  of  the  current  vertex
        --          relative to the boundary if it is an interference.
    is static;
    
fields
	
    myIterator   : ListIteratorOfInterferenceList from HLRAlgo;
    myTool       : EdgeInterferenceTool           from HLRBRep;
    fromEdge     : Boolean                        from Standard;
    fromInterf   : Boolean                        from Standard;

end VertexList;