/// <summary>
/// Converts the geometry from Geography Markup Language (GML) representation.
/// </summary>
/// <param name="source">The source XML element.</param>
/// <param name="geometryFactory">The geometry factory.</param>
/// <param name="referenceSystemFactory">The reference system factory.</param>
/// <returns>The converted geometry.</returns>
/// <remarks>
/// The <see cref="XElement" /> does not contain the namespace attribute for <code>gml</code>
/// (<code>xmlns:gml="http://www.opengis.net/gml/"</code>), which should be added to a parent node before usage.
/// </remarks>
/// <exception cref="System.ArgumentNullException">
/// The source is null.
/// or
/// The geometry factory is null.
/// or
/// The reference system factory is null.
/// </exception>
/// <exception cref="System.ArgumentException">The specified source is invalid.</exception>
public static IGeometry ToGeometry(this XElement source, IGeometryFactory geometryFactory, IReferenceSystemFactory referenceSystemFactory)
{
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
if (geometryFactory == null)
{
throw new ArgumentNullException(nameof(geometryFactory));
}
if (referenceSystemFactory == null)
{
throw new ArgumentNullException(nameof(referenceSystemFactory));
}
IReferenceSystem referenceSystem = GetReferenceSystem(source.Attribute("srsName"), referenceSystemFactory);
return(ToGeometry(source, geometryFactory.WithReferenceSystem(referenceSystem)));
}
