public WebApiResult <string> IndexToRGB(IndexToRGBRequest Request)
{
var log = new TaskLogEntity()
{
GUID = Request.GUID, Name = "索引图转RGB图", Type = "VRT", Description = "BuildVRTByTile", Status = "进行中", Parameter = JsonHelper.ToJson(Request)
};
//操作日志
new Log <IndexToRGBRequest>(log);
try
{
//遍历文件夹，获取瓦片地图地址信息
DirectoryInfo TheFolder = new DirectoryInfo(Request.path);
//DirectoryInfo[] folder_list = TheFolder.GetDirectories();
FileInfo[] file_list = GetFileList(TheFolder, "*.png");
//如果瓦片地图为索引色图片，则将其转换为RGB图像
for (int i = 0; i < file_list.Length; i++)
{
Bitmap mtile = (Bitmap)Bitmap.FromFile(file_list[i].FullName);
//如果原图片是索引像素格式之列的，则需要转换
if (IsPixelFormatIndexed(mtile.PixelFormat) || mtile.PixelFormat == PixelFormat.Format32bppArgb)
{
using (Bitmap bmp = new Bitmap(mtile.Width, mtile.Height, PixelFormat.Format32bppArgb))
{
using (Graphics g = Graphics.FromImage(bmp))
{
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
g.DrawImage(mtile, 0, 0);
}
mtile = (Bitmap)bmp.Clone();
}
}
String savedir = "E" + file_list[i].DirectoryName.Substring(1);
if (!Directory.Exists(savedir))
{
Directory.CreateDirectory(savedir);
}
String savepath = "E" + file_list[i].FullName.Substring(0, file_list[i].FullName.LastIndexOf(".") + 1).Substring(1) + "jpg";
if (File.Exists(savepath))
{
File.Delete(savepath);
}
mtile.Save(savepath, ImageFormat.Jpeg);
}
log.Status = "已完成";
log.CompleteTime = DateTime.Now.ToString();
//操作日志
new Log <IndexToRGBRequest>(log);
}
catch (Exception ex)
{
log.Status = "错误";
log.ErrorMsg = ex.ToString();
log.ErrorDate = DateTime.Now.ToString();
new Log <IndexToRGBRequest>(log);
}
return(null);
}
/// <summary>
/// 索引图转RGB图，生存VRT时需要读取瓦片地图RBG图层信息
/// </summary>
/// <param name="request"></param>
/// <returns></returns>
public WebApiResult <string> Any(IndexToRGBRequest request)
{
BuildVRTService service = new BuildVRTService();
return(service.IndexToRGB(request));
}
