/// <summary>
/// Gets a tile (X/Y) for a Geo-Coordinate at a given point.
///
/// See https://wiki.openstreetmap.org/wiki/Slippy_map_tilenames#X_and_Y
/// </summary>
/// <param name="zoom">The zoom level hat which the tile coordinates shall be calculated.</param>
/// <param name="point">The Point in Geo-Coordinates of whcih the tile shall be calculated.</param>
/// <returns>The X/Y coordinates of the tile containing the given geo-coordinate.</returns>
public MapVector GetTileForPoint(int zoom, MapPointLatLon point)
{
if (zoom < MinZoom || zoom > MaxZoom)
{
throw new ArgumentException($"zoom is not within MinZoom and MaxZoom {zoom}", nameof(zoom));
}
var projPoint = _projection.ToProjection(point);
double shiftedLon = (1 + (projPoint.Lon / Math.Abs(_projection.MinProjectedLon))) / 2;
double shiftedLat = (1 - (projPoint.Lat / Math.Abs(_projection.MinProjectedLat))) / 2;
double n = GetTileCount(zoom);
int x = (int)Math.Floor(n * shiftedLon);
int y = (int)Math.Floor(n * shiftedLat);
return(new MapVector()
{
X = x, Y = y
});
}
