{

/// <summary>

/// Initializes a new instance of the <see cref="MultiLineString" /> class.

/// </summary>

/// <param name="coordinates">The coordinates.</param>

public MultiLineString(IEnumerable<LineString> coordinates)

{

Coordinates =new ReadOnlyCollection<LineString>(

coordinates?.ToArray() ?? new LineString[0]);

}

/// <summary>

/// Initializes a new <see cref="MultiLineString" /> from a 3-d array

/// of <see cref="double" />s that matches the "coordinates" field in the JSON representation.

/// </summary>

[JsonConstructor]

public MultiLineString(IEnumerable<IEnumerable<IEnumerable<double>>> coordinates)

: this(coordinates?.Select(line => new LineString(line))

?? throw new ArgumentNullException(nameof(coordinates)))

{

}

public override GeoJSONObjectType Type => GeoJSONObjectType.MultiLineString;

/// <summary>

/// The collection of line strings of this <see cref="MultiLineString"/>.

/// </summary>

[JsonProperty("coordinates", Required = Required.Always)]

[JsonConverter(typeof(LineStringEnumerableConverter))]

public ReadOnlyCollection<LineString> Coordinates { get; }

#region IEqualityComparer, IEquatable

/// <summary>

/// Determines whether the specified object is equal to the current object

/// </summary>

public override bool Equals(object obj)

{

return Equals(this, obj as MultiLineString);

}

/// <summary>

/// Determines whether the specified object is equal to the current object

/// </summary>

public bool Equals(MultiLineString other)

{

return Equals(this, other);

}

/// <summary>

/// Determines whether the specified object instances are considered equal

/// </summary>

public bool Equals(MultiLineString left, MultiLineString right)

{

if (base.Equals(left, right))

{

return left.Coordinates.SequenceEqual(right.Coordinates);

}

return false;

}

/// <summary>

/// Determines whether the specified object instances are considered equal

/// </summary>

public static bool operator ==(MultiLineString left, MultiLineString right)

{

if (ReferenceEquals(left, right))

{

return true;

}

if (ReferenceEquals(null, right))

{

return false;

}

return left != null && left.Equals(right);

}

/// <summary>

/// Determines whether the specified object instances are not considered equal

/// </summary>

public static bool operator !=(MultiLineString left, MultiLineString right)

{

return !(left == right);

}

/// <summary>

/// Returns the hash code for this instance

/// </summary>

public override int GetHashCode()

{

int hash = base.GetHashCode();

foreach (var item in Coordinates)

{

hash = (hash * 397) ^ item.GetHashCode();

}

return hash;

}

/// <summary>

/// Returns the hash code for the specified object

/// </summary>

public int GetHashCode(MultiLineString other)

{

return other.GetHashCode();

}

#endregion