public void Generate()
{
if (InputFilePath == null)
{
throw new InvalidOperationException("Input file path is not specified.");
}
if (OutputDirPath == null)
{
throw new InvalidOperationException("Output directory path is not specified.");
}
if (ViewerCreation && BaseName == null)
{
throw new InvalidOperationException("Base name should be specified for viewer creation.");
}
var zoomLevels = new List <ZoomLevel>();
ImageReader reader = null;
try
{
reader = ImageReader.Create(InputFilePath);
var d = 1f;
ZoomLevel zoomLevel;
do
{
zoomLevel.ImageWidth = (int)((float)reader.Width / d);
zoomLevel.ImageHeight = (int)((float)reader.Height / d);
zoomLevel.GridWidth = (zoomLevel.ImageWidth + TileSize - 1) / TileSize;
zoomLevel.GridHeight = (zoomLevel.ImageHeight + TileSize - 1) / TileSize;
zoomLevels.Add(zoomLevel);
tileTotal += zoomLevel.GridWidth * zoomLevel.GridHeight;
d *= 2;
} while (zoomLevel.ImageWidth > TileSize || zoomLevel.ImageHeight > TileSize);
zoomLevels.Reverse();
if (ViewerCreation)
{
var bd = AppDomain.CurrentDomain.BaseDirectory;
try
{
if (!Directory.Exists(OutputDirPath))
{
Directory.CreateDirectory(OutputDirPath);
}
}
catch (Exception e)
{
throw new IOException(String.Format("Can't create directory {0}.\r\n {1}", OutputDirPath, e.Message));
}
File.Copy(Path.Combine(bd, ScriptFileName), Path.Combine(OutputDirPath, ScriptFileName), true);
var viewer = File.ReadAllText(Path.Combine(bd, ViewerFileName)).
Replace("{viewerwidth}", ViewerWidth.ToString()).
Replace("{viewerheight}", ViewerHeight.ToString()).
Replace("{imagewidth}", reader.Width.ToString()).
Replace("{imageheight}", reader.Height.ToString()).
Replace("{basename}", BaseName).
Replace("{structure}", FileStructure.Replace("{ext}", GetTileFileExt()));
if (TileSize != 256)
{
viewer = viewer.Replace("{tilesize}", TileSize.ToString());
}
else
{
var r = new Regex(@"^.*{tilesize}.*\r\n", RegexOptions.Multiline);
viewer = r.Replace(viewer, "");
}
File.WriteAllText(Path.Combine(OutputDirPath, BaseName + ".htm"), viewer);
}
}
finally
{
if (reader != null)
{
reader.Dispose();
}
}
tileProcessedTotal = 0;
//Application can't have more than 2048 file handlers.
//We can reach the limit with >~100 MP images
for (int minTileIndex = 1; minTileIndex <= tileTotal; minTileIndex += MaxOpenFileCount)
{
int maxTileIndex = Math.Min(minTileIndex + MaxOpenFileCount - 1, tileTotal);
int tileIndex = 0;
//Store reference to all pipeline elements for further correct object disposing
var pipelineElements = new List <PipelineElement>();
try
{
reader = ImageReader.Create(InputFilePath);
pipelineElements.Add(reader);
PipelineElement source;
//Create progress tracker
if (Progress != null)
{
var progress = new ProgressReporter();
progress.Progress += (s, e) =>
{
OnProgress(e);
};
pipelineElements.Add(progress);
reader.Receivers.Add(progress);
source = progress;
}
else
{
source = reader;
}
for (int zoom = 0; zoom < zoomLevels.Count; zoom++)
{
PipelineElement resize;
if (zoom == zoomLevels.Count)
{
resize = source;
}
else
{
resize = new Resize(zoomLevels[zoom].ImageWidth, zoomLevels[zoom].ImageHeight, ResizeInterpolationMode.Anisotropic9);
pipelineElements.Add(resize);
source.Receivers.Add(resize);
}
for (int tileX = 0; tileX < zoomLevels[zoom].GridWidth; tileX++)
{
for (int tileY = 0; tileY < zoomLevels[zoom].GridHeight; tileY++)
{
tileIndex++;
if (tileIndex < minTileIndex)
{
continue;
}
int x = tileX * TileSize;
int y = tileY * TileSize;
int width = Math.Min((tileX + 1) * TileSize, zoomLevels[zoom].ImageWidth) - x;
int height = Math.Min((tileY + 1) * TileSize, zoomLevels[zoom].ImageHeight) - y;
var crop = new Crop(x, y, width, height);
pipelineElements.Add(crop);
resize.Receivers.Add(crop);
var outputFilePath = Path.Combine(GetTileOutputDirPath(),
String.Format(GetFileStructureFormat(), zoom, tileX, tileY, GetTileFileExt()));
var p = Path.GetDirectoryName(outputFilePath);
try
{
if (!Directory.Exists(p))
{
Directory.CreateDirectory(p);
}
}
catch (Exception e)
{
throw new IOException(String.Format("Can't create directory {0}.\r\n {1}", p, e.Message));
}
ImageWriter writer;
switch (TileImageFormat)
{
case TileImageFormat.PNG:
writer = new PngWriter(outputFilePath);
break;
default:
writer = new JpegWriter(outputFilePath, TileJpegQuality);
break;
}
pipelineElements.Add(writer);
crop.Receivers.Add(writer);
if (tileIndex == maxTileIndex)
{
//Remove resize elements without crop receivers
for (var l = source.Receivers.Count - 1; l >= 0; l--)
{
if (source.Receivers[l].Receivers.Count == 0)
{
source.Receivers.RemoveAt(l);
}
}
Pipeline.Run(reader);
tileProcessedTotal = maxTileIndex;
goto LoopOut;
}
}
}
}
LoopOut:
;
}
finally
{
for (var i = 0; i < pipelineElements.Count; i++)
{
pipelineElements[i].Dispose();
}
}
}
}
private string GetFileStructureFormat()
{
return(FileStructure.Replace("{z}", "{0}").Replace("{x}", "{1}").
Replace("{y}", "{2}").Replace("{ext}", "{3}"));
}