private void ReadExtArgs(FileResampleSetting prjSettings)
{
if (prjSettings.ExtArgs != null && prjSettings.ExtArgs.Length != 0)
{
foreach (object arg in prjSettings.ExtArgs)
{
if (arg is Dictionary <string, double> )
{
Dictionary <string, double> exAtg = arg as Dictionary <string, double>;
if (exAtg.ContainsKey("xzoom"))
{
_xzoom = exAtg["xzoom"];
}
if (exAtg.ContainsKey("yzoom"))
{
_yzoom = exAtg["yzoom"];
}
if (exAtg.ContainsKey("FillValue"))
{
_fillValue = exAtg["FillValue"];
}
}
}
}
if (prjSettings.OutEnvelope != null)
{
_resSettings = prjSettings;
_resSettings.OutSize = GetSize(prjSettings.OutResolutionX, prjSettings.OutEnvelope);
}
}
public void Resample(RSS.Core.DF.IRasterDataProvider srcRaster, FileResampleSetting resSettings, Action <int, string> progressCallback)
{
if (srcRaster == null)
{
throw new ArgumentNullException("srcRaster", "待重采样数据为空");
}
if (resSettings == null)
{
throw new ArgumentNullException("prjSettings", "重采样参数为空");
}
ReadExtArgs(resSettings);
string outfilename = resSettings.OutPathAndFileName;
IRasterDataProvider outwriter = null;
try
{
Size outSize = _resSettings.OutSize;
string[] options = new string[] {
"INTERLEAVE=BSQ",
"VERSION=LDF",
"WITHHDR=TRUE",
"SPATIALREF=" + _dstSpatialRef.ToProj4String(),
"MAPINFO={" + 1 + "," + 1 + "}:{" + _resSettings.OutEnvelope.MinX + "," + _resSettings.OutEnvelope.MaxY + "}:{" + _resSettings.OutResolutionX + "," + _resSettings.OutResolutionY + "}"
};
outwriter = CreateOutFile(outfilename, srcRaster.BandCount, outSize, srcRaster.DataType, options);
if (File.Exists(outfilename))
{
ResampleRaster(srcRaster, outwriter, progressCallback);
}
else
{
throw new FileLoadException("目标文件" + outfilename + "不存在！");
}
}
catch (IOException ex)
{
if (ex.Message == "磁盘空间不足。\r\n" && File.Exists(outfilename))
{
File.Delete(outfilename);
}
throw ex;
}
finally
{
if (outwriter != null)
{
outwriter.Dispose();
outwriter = null;
}
}
}
