public static async Task GenerateMosaicFromTilesAsync(
Stream sourceImage,
CloudBlobContainer tileContainer, string tileDirectory,
Stream outputStream,
int tilePixels,
TraceWriter log)
{
using (var tileProvider = new QuadrantMatchingTileProvider()) {
MosaicBuilder.TileHeight = int.Parse(Environment.GetEnvironmentVariable("MosaicTileWidth"));
MosaicBuilder.TileWidth = int.Parse(Environment.GetEnvironmentVariable("MosaicTileHeight"));
// override default tile width and height if specified
if (tilePixels != 0)
{
MosaicBuilder.TileWidth = MosaicBuilder.TileHeight = tilePixels;
}
MosaicBuilder.DitheringRadius = -1;
MosaicBuilder.ScaleMultiplier = 1;
List <byte[]> tileImages = await GetTileImagesAsync(tileContainer, tileDirectory, log);
tileProvider.SetSourceStream(sourceImage);
tileProvider.ProcessInputImageColors(MosaicBuilder.TileWidth, MosaicBuilder.TileHeight);
tileProvider.ProcessTileColors(tileImages);
log.Info("Generating mosaic...");
var start = DateTime.Now;
GenerateMosaic(tileProvider, sourceImage, tileImages, outputStream);
log.Info($"Time to generate mosaic: {(DateTime.Now - start).TotalMilliseconds}");
}
}
public static void GenerateMosaicFromTiles(
Stream sourceImage, CloudBlobContainer tileContainer, string tileDirectory, Stream outputStream)
{
using (var tileProvider = new QuadrantMatchingTileProvider()) {
MosaicBuilder.TileHeight = int.Parse(Environment.GetEnvironmentVariable("MosaicTileWidth"));
MosaicBuilder.TileWidth = int.Parse(Environment.GetEnvironmentVariable("MosaicTileHeight"));
MosaicBuilder.DitheringRadius = -1;
MosaicBuilder.ScaleMultiplier = 1;
var directory = tileContainer.GetDirectoryReference(tileDirectory);
var blobs = directory.ListBlobs(true);
var tileImages = new List <byte[]>();
foreach (var b in blobs)
{
if (b.GetType() == typeof(CloudBlockBlob))
{
var blob = (CloudBlockBlob)b;
blob.FetchAttributes();
var bytes = new byte[blob.Properties.Length];
blob.DownloadToByteArray(bytes, 0);
tileImages.Add(bytes);
}
}
tileProvider.SetSourceStream(sourceImage);
tileProvider.ProcessInputImageColors(MosaicBuilder.TileWidth, MosaicBuilder.TileHeight);
tileProvider.ProcessTileColors(tileImages);
GenerateMosaic(tileProvider, sourceImage, tileImages, outputStream);
}
}
