如何实现地图坐标的IEnumerator？

public struct MapCoordinate
{
    public float Longitude;
    public float Latitude;
}

public class MapCoordinateEnumerator : IEnumerator
{
    private MapCoordinate[] coordinates;
    private int currentIndex;

    public MapCoordinateEnumerator(MapCoordinate[] coordinates)
    {
        this.coordinates = coordinates;
        currentIndex = -1;
    }

    public object Current
    {
        get { return coordinates[currentIndex]; }
    }

    public bool MoveNext()
    {
        currentIndex++;
        return currentIndex < coordinates.Length;
    }

    public void Reset()
    {
        currentIndex = -1;
    }
}

MapCoordinate[] coordinates = new MapCoordinate[]
{
    new MapCoordinate { Longitude = 1.23f, Latitude = 4.56f },
    new MapCoordinate { Longitude = 7.89f, Latitude = 0.12f },
    // 添加更多地图坐标...
};

MapCoordinateEnumerator enumerator = new MapCoordinateEnumerator(coordinates);

while (enumerator.MoveNext())
{
    MapCoordinate coordinate = (MapCoordinate)enumerator.Current;
    // 处理当前地图坐标
    Console.WriteLine("Longitude: " + coordinate.Longitude + ", Latitude: " + coordinate.Latitude);
}

enumerator.Reset(); // 重置遍历状态，可以重新开始遍历