namespace TINK.Model.Map
{
	public class NullMapSpan : IMapSpan
	{
		internal NullMapSpan() { }

		/// <summary> Center of map displayed area.</summary>
		public IPosition Center { get; } = PositionFactory.Create();

		/// <summary> Radius of displayed map area. </summary>
		public double Radius => double.NaN;

		public bool IsValid => MapSpan.GetIsValid(Center, Radius);
	}
}