{

internal static readonly DoubleTenDecimalPlaceComparer DoubleComparer = new DoubleTenDecimalPlaceComparer();

/// <summary>

/// Gets or sets the (optional)

/// <see cref="https://tools.ietf.org/html/rfc7946#section-5">Bounding Boxes</see>.

/// </summary>

/// <value>

/// The value of <see cref="BoundingBoxes" /> must be a 2*n array where n is the number of dimensions represented in

/// the

/// contained geometries, with the lowest values for all axes followed by the highest values.

/// The axes order of a bbox follows the axes order of geometries.

/// In addition, the coordinate reference system for the bbox is assumed to match the coordinate reference

/// system of the GeoJSON object of which it is a member.

/// </value>

[JsonProperty(PropertyName = "bbox", Required = Required.Default, NullValueHandling = NullValueHandling.Ignore)]

public double[] BoundingBoxes { get; set; }

/// <summary>

/// Gets or sets the (optional)

/// <see cref="https://tools.ietf.org/html/rfc7946#section-4">

/// Coordinate Reference System

/// Object.

/// </see>

/// </summary>

/// <value>

/// The Coordinate Reference System Objects.

/// </value>

[JsonProperty(PropertyName = "crs", Required = Required.Default, DefaultValueHandling = DefaultValueHandling.IgnoreAndPopulate,

NullValueHandling = NullValueHandling.Include)]

[JsonConverter(typeof(CrsConverter))]

//[DefaultValue(typeof(DefaultCRS), "")]

public ICRSObject CRS { get; set; }

/// <summary>

/// The (mandatory) type of the

/// <see cref="https://tools.ietf.org/html/rfc7946#section-3">GeoJSON Object</see>.

/// </summary>

[JsonProperty(PropertyName = "type", Required = Required.Always, DefaultValueHandling = DefaultValueHandling.Include)]

//[JsonConverter(typeof(StringEnumConverter))]

public abstract GeoJSONObjectType Type { 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 GeoJSONObject);

}

/// <summary>

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

/// </summary>

public bool Equals(GeoJSONObject other)

{

return Equals(this, other);

}

/// <summary>

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

/// </summary>

public bool Equals(GeoJSONObject left, GeoJSONObject right)

{

if (ReferenceEquals(left, right))

{

return true;

}

if (ReferenceEquals(null, right))

{

return false;

}

if (left.Type != right.Type)

{

return false;

}

if (!Equals(left.CRS, right.CRS))

{

return false;

}

var leftIsNull = ReferenceEquals(null, left.BoundingBoxes);

var rightIsNull = ReferenceEquals(null, right.BoundingBoxes);

var bothAreMissing = leftIsNull && rightIsNull;

if (bothAreMissing || leftIsNull != rightIsNull)

{

return bothAreMissing;

}

return left.BoundingBoxes.SequenceEqual(right.BoundingBoxes, DoubleComparer);

}

/// <summary>

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

/// </summary>

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

{

if (ReferenceEquals(left, right))

{

return true;

}

if (ReferenceEquals(null, right))

{

return false;

}

return left.Equals(right);

}

/// <summary>

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

/// </summary>

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

{

return !(left == right);

}

/// <summary>

/// Returns the hash code for this instance

/// </summary>

public override int GetHashCode()

{

return ((int)Type).GetHashCode();

}

/// <summary>

/// Returns the hash code for the specified object

/// </summary>

public int GetHashCode(GeoJSONObject obj)

{

return obj.GetHashCode();

}

#endregion