public ElevationFile(String filePath, DecimalGeoCoordinate location, TileResolution resolution)
{
if (filePath == null)
{
throw new ArgumentNullException("filePath");
}
if (!File.Exists(filePath))
{
throw new FileNotFoundException(filePath);
}
Resolution = resolution;
Location = location;
FilePath = filePath;
}
/// <summary>
/// Load a reference to an elevation file on disk.
/// </summary>
/// <param name="filePath"></param>
/// <returns></returns>
public ElevationFile LoadFile(String filePath)
{
if (filePath == null)
{
throw new ArgumentNullException("filePath");
}
if (!File.Exists(filePath))
{
throw new FileNotFoundException(filePath);
}
TileResolution resolution = null;
using (var fileStream = File.Open(filePath, FileMode.Open, FileAccess.Read, FileShare.Read))
{
long fileLength = fileStream.Length / 2;
resolution = TileResolution.GetResolutionFromFileLength(fileLength);
}
var location = ParseGeoCoordinateFromFileName(filePath);
return(new ElevationFile(filePath, location, resolution));
}
private void OnTileResolutionChanged(TileResolutionChanged message)
{
_tileResolution = message.TileResolution;
CanExecuteChanged?.Invoke(this, EventArgs.Empty);
}
