private static int FindOptimalTileZoomLevel(int width, Models.GeographicalBounds geoBBox)
{
var mapSize = WebMercator.MapSize(width, geoBBox.MinLongitude, geoBBox.MaxLongitude);
var minZoom = 0;
var minDistance = Double.MaxValue;
for (var zoom = 0; zoom < 24; zoom++) // TODO: range?
{
var mapSizeAtZoom = WebMercator.MapSize(zoom, WebMercator.DefaultTileSize); // TODO: ? use tile size parameter instead of const
var distance = Math.Abs(mapSize - mapSizeAtZoom);
if (distance < minDistance)
{
minDistance = distance;
minZoom = zoom;
}
}
return(minZoom);
}