public static LineString ToGeometry(this LinearRingType linearRing)
{
List<IPosition> positions;
Type posType = linearRing.Items1ElementName.First().GetType();
positions = FromGMLData(linearRing.Items1, Array.ConvertAll<Items1ChoiceType2, string>(linearRing.Items1ElementName, i => i.ToString()));
LineString linestring = new LineString(positions);
if (linestring.Positions.Count < 4 || !linestring.IsClosed())
throw new InvalidFormatException("invalid GML representation: linearring is not a closed ring of minimum 4 positions");
return linestring;
}
public static GeometryObject ToGeometry(this Terradue.GeoJson.GeoRss10.GeoRss10Polygon georssPolygon)
{
if (georssPolygon.Item == null)
return null;
Polygon polygon = new Polygon();
polygon.LineStrings = new System.Collections.Generic.List<LineString>();
LineString ls = new LineString(new DirectPositionListType(){ Text = georssPolygon.Item }.ToGeometry());
if (ls.Positions.Count < 4 || !ls.IsClosed())
throw new InvalidFormatException("invalid GML representation: linearring is not a closed ring of minimum 4 positions");
polygon.LineStrings.Add(ls);
return polygon;
}