/// <summary>
/// Returns the reference system specified by the attribute.
/// </summary>
/// <param name="attribute">The XML attribute.</param>
/// <param name="referenceSystemFactory">The reference system factory.</param>
/// <returns>The reference system.</returns>
private static IReferenceSystem GetReferenceSystem(XAttribute attribute, IReferenceSystemFactory referenceSystemFactory)
{
if (attribute == null || referenceSystemFactory == null)
{
return(null);
}
if (!attribute.Value.Contains(ReferenceSystemUri))
{
return(null);
}
return(referenceSystemFactory.CreateReferenceSystemFromIdentifier("EPSG::" + attribute.Value.Remove(0, ReferenceSystemUri.Length)));
}
public void ReferenceSystemFactory(IReferenceSystemFactory referenceSystemFactory
)
{
_config.Put(ReferenceSystemFactoryKey, referenceSystemFactory);
}
private void InitializeReferenceSystemFactory(Config4Impl config)
{
_referenceSystemFactory = config.ReferenceSystemFactory();
}
public void ReferenceSystemFactory(IReferenceSystemFactory referenceSystemFactory
)
{
_config.Put(ReferenceSystemFactoryKey, referenceSystemFactory);
}
/// <summary>
/// Converts the geometry from Geography Markup Language (GML) representation.
/// </summary>
/// <param name="source">The source string.</param>
/// <param name="geometryFactory">The geometry factory.</param>
/// <param name="referenceSystemFactory">The reference system factory.</param>
/// <returns>The converted geometry.</returns>
/// <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 String 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));
}
try
{
XDocument doc = XDocument.Parse(source);
return(ToGeometry(doc.Elements(), geometryFactory, referenceSystemFactory));
}
catch (Exception ex)
{
throw new ArgumentException(CoreMessages.SourceIsInvalid, nameof(source), ex);
}
}
/// <summary>
/// Converts the geometry from Geography Markup Language (GML) representation.
/// </summary>
/// <param name="source">The source collection of XML elements.</param>
/// <param name="geometryFactory">The geometry factory.</param>
/// <param name="referenceSystemFactory">The reference system factory.</param>
/// <returns>The converted geometry.</returns>
/// <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 IEnumerable <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));
}
try
{
List <IGeometry> geometries = new List <IGeometry>();
foreach (XElement element in source)
{
geometries.Add(ToGeometry(element, geometryFactory, referenceSystemFactory));
}
if (geometries.Count == 0)
{
return(null);
}
if (geometries.Count == 1)
{
return(geometries[0]);
}
if (geometries.All(geometry => geometry is IPoint))
{
return(geometryFactory.CreateMultiPoint(geometries.Cast <IPoint>()));
}
if (geometries.All(geometry => geometry is ILineString))
{
return(geometryFactory.CreateMultiLineString(geometries.Cast <ILineString>()));
}
if (geometries.All(geometry => geometry is IPolygon))
{
return(geometryFactory.CreateMultiPolygon(geometries.Cast <IPolygon>()));
}
return(geometryFactory.CreateGeometryCollection(geometries));
}
catch (Exception ex)
{
throw new ArgumentException(CoreMessages.SourceIsInvalid, nameof(source), ex);
}
}
/// <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)));
}