namespace TINK.Model.Map
{
public class NullMapSpan : IMapSpan
{
internal NullMapSpan() { }
/// Center of map displayed area.
public IPosition Center { get; } = PositionFactory.Create();
/// Radius of displayed map area.
public double Radius => double.NaN;
public bool IsValid => MapSpan.GetIsValid(Center, Radius);
}
}