/// <summary>
/// Generates a WKT string for the polygons in a Placemark <see cref="Placemark"/>.
/// Currently only supports placemarks with MultipleGeometry, Polygon and LineString Geometries.
/// </summary>
/// <param name="placemark">The placemark instance.</param>
/// <param name="convertLineStringToPolygon">If linestring should be converted to polygon</param>
/// <returns>
/// A <c>string</c> containing the well known text string for the geometry in the
/// placemark.
/// </returns>
/// <exception cref="ArgumentNullException">placemark is null.</exception>
/// <exception cref="ArgumentException">placemark geometry is not a MultipleGeometry, Polygon or LineString.</exception>
public static string AsWKT(this Placemark placemark, bool convertLineStringToPolygon = false)
{
if (placemark == null)
{
throw new ArgumentNullException();
}
if (!(placemark.Geometry is MultipleGeometry) && !(placemark.Geometry is Polygon) && !(placemark.Geometry is LineString))
{
throw new NotImplementedException("Only implemented types are Polygon, MultiplePolygon and LineString");
}
List <Vector[][]> coordinates = placemark.ConvertToCoordinates();
if (placemark.Geometry is MultipleGeometry)
{
return(GenerateMultiplePolygonWKT(coordinates));
}
if (placemark.Geometry is LineString && !convertLineStringToPolygon)
{
return(GenerateLineStringWKT(coordinates.FirstOrDefault()));
}
return(GeneratePolygonWKT(coordinates.FirstOrDefault()));
}
/// <summary>
/// Generates a WKT string for the polygons in a Placemark <see cref="Placemark"/>.
/// Currently only supports placemarks with MultipleGeometry or Polygon Geometries.
/// </summary>
/// <param name="placemark">The placemark instance.</param>
/// <returns>
/// A <c>string</c> containing the well known text string for the geometry in the
/// placemark.
/// </returns>
/// <exception cref="ArgumentNullException">placemark is null.</exception>
/// <exception cref="ArgumentException">placemark geometry is not a MultipleGeometry or Polygon.</exception>
public static string AsWKT(this Placemark placemark)
{
if (placemark == null)
{
throw new ArgumentNullException();
}
if (!(placemark.Geometry is MultipleGeometry) && !(placemark.Geometry is SharpKml.Dom.Polygon))
{
throw new NotImplementedException("Only implemented types are Polygon and MultiplePolygon");
}
List <Vector[][]> coordinates = placemark.ConvertToCoordinates();
if (placemark.Geometry is MultipleGeometry)
{
return(GenerateMultiplePolygonWKT(coordinates));
}
return(GeneratePolygonWKT(coordinates.FirstOrDefault()));
}
/// <summary>
/// Generates a WKT string for the polygons,LineString And Points in a Placemark <see cref="Placemark"/>.
/// Currently only supports placemarks with MultipleGeometry or Polygon Geometries.
/// </summary>
/// <param name="placemark">The placemark instance.</param>
/// <returns>
/// A <c>string</c> containing the well known text string for the geometry in the
/// placemark.
/// </returns>
/// <exception cref="ArgumentNullException">placemark is null.</exception>
/// <exception cref="ArgumentException">placemark geometry is not a MultipleGeometry or Polygon.</exception>
public static string AsWKT(this Placemark placemark)
{
if (placemark == null)
{
throw new ArgumentNullException();
}
if ((placemark.Geometry is MultipleGeometry) || (placemark.Geometry is Polygon))
{
List <Vector[][]> coordinates = placemark.ConvertToCoordinates();
if (placemark.Geometry is MultipleGeometry)
{
return(GenerateMultiplePolygonWKT(coordinates));
}
return(GeneratePolygonWKT(coordinates.FirstOrDefault()));
}
else if (placemark.Geometry is LineString)
{
var lineStringCoordinates = ((LineString)placemark.Geometry).Coordinates
.Select(x => $"{x.Longitude} {x.Latitude}");
string wkt = $"LINESTRING({string.Join(", ", lineStringCoordinates)})";
return(wkt);
}
else if (placemark.Geometry is Point)
{
Point point = ((Point)placemark.Geometry);
return($"POINT({point.Coordinate.Longitude} {point.Coordinate.Latitude})");
}
throw new NotImplementedException("Only implemented types are Polygon - MultiplePolygon - LineString - Point");
}