/// <summary>
/// Converts the specified <paramref name="geometry"/> into a corresponding instance of <see cref="IShape"/>.
/// </summary>
/// <param name="geometry">The geometry to be converted.</param>
/// <returns>An instance of <see cref="IShape"/>.</returns>
/// <exception cref="ArgumentNullException"><paramref name="geometry"/> is <c>null</c>.</exception>
/// <exception cref="WktUnsupportedTypeException">type of <paramref name="geometry"/> is not supported.</exception>
public static IShape ToShape(WktGeometry geometry)
{
if (geometry == null)
{
throw new ArgumentNullException(nameof(geometry));
}
switch (geometry)
{
case WktPolygon polygon:
return(ToPolygon(polygon));
case WktMultiPolygon multi:
return(ToMultiPolygon(multi));
default:
throw new WktUnsupportedTypeException(geometry.GetType().FullName);
}
}
/// <summary>
/// Returns the area of the specified WKT <paramref name="geometry"/> shape measured in sqaure metres.
/// </summary>
/// <param name="geometry">The WKT shape.</param>
/// <returns>A <see cref="double"/> representing the area of the shape in square metres.</returns>
/// <remarks>For this method to work, it is assumed that coordinates are specified using the
/// <strong>WGS 84</strong> coordinate system (eg. used by the Global Positioning System).</remarks>
/// <see>
/// <cref>https://en.wikipedia.org/wiki/World_Geodetic_System#WGS84</cref>
/// </see>
/// <see>
/// <cref>https://en.wikipedia.org/wiki/Global_Positioning_System</cref>
/// </see>
/// <exception cref="ArgumentNullException"><paramref name="geometry"/> is <c>null</c>.</exception>
public static double GetArea(WktGeometry geometry)
{
if (geometry == null)
{
throw new ArgumentNullException(nameof(geometry));
}
switch (geometry)
{
case WktMultiPolygon multi:
return(GetArea(multi));
case WktPolygon polygon:
return(GetArea(polygon));
default:
throw new InvalidOperationException("Unsupported type " + geometry.GetType());
}
}