public ZippedImagePyramidDataSource(string worldFilePyramidFileName, Func <int, int, int, string> fileNameRule = null, Func <string, TileInfo> inverseFunction = null)
{
if (!System.IO.File.Exists(worldFilePyramidFileName))
{
throw new NotImplementedException();
}
_archive = System.IO.Compression.ZipFile.OpenRead(worldFilePyramidFileName);
if (fileNameRule == null)
{
//_fileNameRule = (z, r, c) => System.IO.Path.Combine(z.ToString(), $"{z}, {r}, {c}.jpg");
_fileNameRule = _defaultFileNameRule;
}
else
{
_fileNameRule = fileNameRule;
}
if (inverseFunction == null)
{
_inverseFunction = _defaultInverseFunction;
}
else
{
_inverseFunction = inverseFunction;
}
var extentString = ZipFileHelper.ReadAsString(_archive, _extentFileName);
if (extentString == null || extentString.Contains("NaN"))
{
_archive.Dispose();
_archive = System.IO.Compression.ZipFile.Open(worldFilePyramidFileName, System.IO.Compression.ZipArchiveMode.Update);
var lastPyramid = _archive.Entries.Max(e =>
{
var folder = e.FullName.Replace($"\\{e.Name}", string.Empty);
int zoom = -1;
int.TryParse(folder, out zoom);
return(zoom);
}
);
this.Extent = BoundingBox.GetMergedBoundingBox(
_archive.Entries.Where(e => e.FullName.StartsWith(lastPyramid.ToString()))
.Select(e => _inverseFunction(e.FullName).WebMercatorExtent), true);
ZipFileHelper.WriteString(_archive, Newtonsoft.Json.JsonConvert.SerializeObject(Extent), _extentFileName);
_archive.Dispose();
_archive = System.IO.Compression.ZipFile.OpenRead(worldFilePyramidFileName);
}
else
{
this.Extent = JsonHelper.ParseFromJson <BoundingBox>(extentString);
}
}