/// <summary>
/// Creates a new instance of <see cref="Polygon"/> using serialization information.
/// </summary>
protected Polygon(SerializationInfo info, StreamingContext context)
{
var coordinates = (double[][][])info.GetValue("coordinates", typeof(double[][][]));
Rings = AsReadOnlyCollection(coordinates
.Select(r => (IList <Point>)r.Select(p => new Point(p[0], p[1])).ToList())
.ToList());
_ringsWithOrderedPoints = Rings.Select(r => (IList <Point>)r.OrderBy(p => p).ToList()).ToList();
}
/// <summary>
/// Creates a new instance of <see cref="Polygon"/> using multiple rings.
/// </summary>
/// <param name="rings">The polygon rings</param>
public Polygon(IList <IList <Point> > rings)
{
if (rings == null)
{
throw new ArgumentNullException("rings");
}
Rings = AsReadOnlyCollection(rings, r => AsReadOnlyCollection(r));
_ringsWithOrderedPoints = Rings.Select(r => (IList <Point>)r.OrderBy(p => p).ToList()).ToList();
}
internal Polygon(JObject obj)
{
var coordinates = obj.GetValue("coordinates").ToObject <double[][][]>();
Rings = AsReadOnlyCollection(coordinates
.Select(r => (IList <Point>)r.Select(p => new Point(p[0], p[1])).ToList())
.ToList());
_ringsWithOrderedPoints = Rings.Select(r => (IList <Point>)r.OrderBy(p => p).ToList()).ToList();
}
/// <summary>
/// Returns Well-known text (WKT) representation of the geometry object.
/// </summary>
public override string ToString()
{
if (Rings.Count == 0)
{
return("POLYGON EMPTY");
}
return(string.Format("POLYGON ({0})", string.Join(", ",
Rings.Select(r =>
"(" +
string.Join(", ", r.Select(p => p.X.ToString(CultureInfo.InvariantCulture) + " " + p.Y.ToString(CultureInfo.InvariantCulture))) +
")"))));
}
private string PolygonToWkt()
{
if (!(Rings?.Length > 0))
{
return("POLYGON EMPTY");
}
else if (Rings.Length == 1)
{
return(FormattableString.Invariant($"POLYGON({EsriJsonHelper.PointArrayToString(Rings[0])})"));
}
else
{
return(FormattableString.Invariant($"MULTIPOLYGON({string.Join(", ", Rings.Select(i => $"({EsriJsonHelper.PointArrayToString(i)})"))})"));
}
}
/// <summary>
/// Returns the hash code based on the value of this instance.
/// </summary>
public override int GetHashCode()
{
// ReSharper disable once NonReadonlyMemberInGetHashCode
return(CombineHashCode(Rings.Select(r => CombineHashCode(r.Select(p => p.GetHashCode())))));
}
