private static Polygon GetPolygon(List<List<GeographicPosition>> lines)
{
var res = new List<LineString>();
foreach (var innerring in lines)
{
var line = new LineString(innerring);
if (line.IsLinearRing() && line.IsClosed())
{
res.Add(line);
}
}
var geom = new Polygon(res);
return geom;
}
