} // private ArrayList BuildMaximalEdgeRings( ArrayList dirEdges )
private ArrayList BuildMinimalEdgeRings(ArrayList maxEdgeRings, ref ArrayList freeHoleList)
{
ArrayList edgeRings = new ArrayList();
foreach (object obj in maxEdgeRings)
{
MaximalEdgeRing er = (MaximalEdgeRing)obj;
if (er.GetMaxNodeDegree() > 2)
{
er.LinkDirectedEdgesForMinimalEdgeRings();
ArrayList minEdgeRings = er.BuildMinimalRings();
// at this point we can go ahead and attempt to place holes, if this EdgeRing is a polygon
//computePoints(minEdgeRings);
EdgeRing shell = FindShell(minEdgeRings);
if (shell != null)
{
PlacePolygonHoles(shell, minEdgeRings);
_shellList.Add(shell);
}
else
{
freeHoleList.AddRange(minEdgeRings);
}
}
else
{
edgeRings.Add(er);
}
} // foreach ( object obj in maxEdgeRings )
return(edgeRings);
} // private ArrayList BuildMinimalEdgeRings( ArrayList maxEdgeRings, ArrayList shellList, ArrayList freeHoleList )
