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Copy pathMultiLineString.cs
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128 lines (113 loc) · 4.1 KB
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// Copyright © Joerg Battermann 2014, Matt Hunt 2017
using System.Collections.Generic;
using System.Linq;
using GeoJSON.Net.Converters;
using Newtonsoft.Json;
using System;
using System.Collections.ObjectModel;
namespace GeoJSON.Net.Geometry
{
/// <summary>
/// Defines the MultiLineString type.
/// </summary>
/// <remarks>
/// See https://tools.ietf.org/html/rfc7946#section-3.1.5
/// </remarks>
public class MultiLineString : GeoJSONObject, IGeometryObject, IEqualityComparer<MultiLineString>, IEquatable<MultiLineString>
{
/// <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
}
}