public static IGeoImage GeoOpen(string path)
{
if (string.IsNullOrEmpty(path))
{
return(null);
}
if (System.IO.Path.GetExtension(path) == ".rst")
{
try
{
GeoImage img = new GeoImage(path);
img.Tag = path;
return(img);
}
catch
{
return(null);
}
}
else
{
GeoNormalImage img = new GeoNormalImage();
if ("" != img.Open(path))
{
img.Dispose();
return(null);
}
img.Tag = path;
return(img);
}
}
//..
public unsafe GeoImage ToCompressImage(LCompressFormat s, string filename)
{
LImageInfo info = new LImageInfo();
GetImageInfo(_imgPtr, ref info);
IntPtr of = IntPtr.Zero;
info.LCFormate = s;
CreateLFile(filename, info, ref of);
int nTileY = info.nRows;
int nTileX = info.nCols;
int size = 512 * 512 * (info.bits / 8) * info.bands;
int bytePerLine = 512 * (info.bits / 8) * info.bands;
byte[] buf = new byte[size];
int r = 0;
fixed(void *ptr = buf)
{
for (int nLvl = 0; nLvl < info.levelCount; nLvl++)
{
for (int i = 0; i < nTileY; i++)
{
for (int j = 0; j < nTileX; j++)
{
r = ReadTile(1, nLvl, i, j, buf, 0, s);
LTileIO(LFRWFlag.LF_Write, of, nLvl, i, j, ptr, 1, ref r);
}
}
nTileX = (nTileX + 1) >> 1;
nTileY = (nTileY + 1) >> 1;
}
}
CloseLFile(of);
GeoImage reader = new GeoImage();
reader.Open(filename);
return(reader);
}