private void backgroundWorkerMain_DoWork(object sender, DoWorkEventArgs e)
{
progressInfo.SubTitle = "读取基本信息";
reportProgress();
List <long> codeList = CountryDao.FindAllCode();
if (codeList == null || codeList.Count == 0)
{
MessageBox.Show("矢量没有正确的code_new信息，请重新注册");
return;
}
DataSource dataSource = Ogr.Open("data\\shp\\dst\\country.shp", 0);
int codeNum = codeList.Count;
progressInfo.Info = string.Format("已完成：0/{0}", codeNum);
for (int i = 0; i < codeNum; i++)
{
progressInfo.SubComplete = 0;
progressInfo.SubTitle = "查询数据";
reportProgress();
long code = codeList[i];
List <string> nameList = ImgDao.findNameByYearAndCode(year, code);
if (nameList == null || nameList.Count == 0)
{
continue;
}
Layer layer = dataSource.ExecuteSQL(string.Format("select * from country where Code_new={0}", code), null, null);
if (layer.GetFeatureCount(1) == 0)
{
continue;
}
layer.ResetReading();
Feature feature = layer.GetNextFeature();
Geometry geometry = feature.GetGeometryRef();
Envelope envelope = new Envelope();
geometry.GetEnvelope(envelope);
int nameCount = nameList.Count;
Dataset[] inDss = new Dataset[nameCount];
for (int j = 0; j < nameCount; j++)
{
inDss[j] = Gdal.Open(string.Format("data\\img\\r{0}\\{1}", year, nameList[j]), Access.GA_ReadOnly);
}
string outFile = string.Format("{0}\\{1:D3}.tif", outPath, code);
string mosaicFile = "/vsimem/mosaic.tif";
string maskFile = "/vsimem/mask.tif";
try
{
progressInfo.SubTitle = "正在镶嵌：";
string[] options = new string[]
{
"-t_srs", "data\\shp\\dst\\country.prj",
"-tr", "30", "30",
"-srcnodata", "128",
"-dstnodata", "0",
"-ot", "Byte",
"-co", "COMPRESS=LZW",
"-co", "TILED=YES",
"-te", envelope.MinX.ToString(), envelope.MinY.ToString(), envelope.MaxX.ToString(), envelope.MaxY.ToString()
};
GDALWarpAppOptions gdalOptions = new GDALWarpAppOptions(options);
Dataset mosaicDs = Gdal.Warp(mosaicFile, inDss, gdalOptions, gdalProgressFunc, null);
progressInfo.SubTitle = "正在栅格化";
progressInfo.SubInfo = "";
options = new string[]
{
"-burn", "1",
"-where", string.Format("Code_new={0}", code),
"-ot", "Byte",
"-co", "COMPRESS=LZW",
"-co", "TILED=YES",
"-tr", "30", "30",
"-te", envelope.MinX.ToString(), envelope.MinY.ToString(), envelope.MaxX.ToString(), envelope.MaxY.ToString()
};
GDALRasterizeOptions rasterOptions = new GDALRasterizeOptions(options);
Dataset vecDs = Gdal.OpenEx("data\\shp\\dst\\country.shp", 0, null, null, null);
Dataset maskDs = Gdal.wrapper_GDALRasterizeDestName(maskFile, vecDs, rasterOptions, gdalProgressFunc, null);
Dataset outDs = multi(mosaicDs, maskDs, outFile);
outDs.Dispose();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
continue;
}
progressInfo.Info = string.Format("已完成：{0}/{1}", i + 1, codeNum);
totalProgress = (i + 1) * 100 / codeNum;
reportProgress();
}
MessageBox.Show("镶嵌完成");
}