static void TileGen(Bitmap srcBitmap, float srcZoomFactor, int tileSize, int tilePadding,
string dstBasePath, string dstFileNameFormat)
{
if (srcZoomFactor != 1.0f)
{
int w = (int)(srcBitmap.Width * srcZoomFactor);
int h = (int)(srcBitmap.Height * srcZoomFactor);
Bitmap newSource = new Bitmap(w, h);
Graphics g = Graphics.FromImage(newSource);
g.InterpolationMode = InterpolationMode.HighQualityBicubic;
g.DrawImage(srcBitmap, 0, 0, w, h);
srcBitmap = newSource;
}
Bitmap tile = new Bitmap(tileSize + tilePadding, tileSize + tilePadding, srcBitmap.PixelFormat);
for (int x = 0, iX = 0; x < srcBitmap.Width; x += tileSize, iX++)
{
for (int y = 0, iY = 0; y < srcBitmap.Height; y += tileSize, iY++)
{
Graphics.FromImage(tile).Clear(Clear);
GraphicsUtil.BitBlt(srcBitmap, x, y, tileSize + tilePadding, tileSize + tilePadding, tile, 0, 0);
string savePath = Path.Combine(dstBasePath, string.Format(dstFileNameFormat, iX, iY));
DirectoryInfo dir = new DirectoryInfo(Path.GetDirectoryName(savePath));
if (!dir.Exists)
{
dir.Create();
}
tile.Save(savePath);
}
}
}