public bool LoadFile(string filename)
{
FileName = filename;
log.InfoFormat("GeoTiff {0}", filename);
using (Tiff tiff = Tiff.Open(filename, "r"))
{
width = tiff.GetField(TiffTag.IMAGEWIDTH)[0].ToInt();
height = tiff.GetField(TiffTag.IMAGELENGTH)[0].ToInt();
bits = tiff.GetField(TiffTag.BITSPERSAMPLE)[0].ToInt();
if (bits != 16)
return false;
var modelscale = tiff.GetField(TiffTag.GEOTIFF_MODELPIXELSCALETAG);
var tiepoint = tiff.GetField(TiffTag.GEOTIFF_MODELTIEPOINTTAG);
i = BitConverter.ToDouble(tiepoint[1].ToByteArray(), 0);
j = BitConverter.ToDouble(tiepoint[1].ToByteArray(), 0 + 8);
k = BitConverter.ToDouble(tiepoint[1].ToByteArray(), 0 + 16);
x = BitConverter.ToDouble(tiepoint[1].ToByteArray(), 0 + 24);
y = BitConverter.ToDouble(tiepoint[1].ToByteArray(), 0 + 32);
z = BitConverter.ToDouble(tiepoint[1].ToByteArray(), 0 + 40);
log.InfoFormat("Tie Point ({0},{1},{2}) --> ({3},{4},{5})", i, j, k, x, y, z);
xscale = BitConverter.ToDouble(modelscale[1].ToByteArray(), 0);
yscale = BitConverter.ToDouble(modelscale[1].ToByteArray(), 0 + 8);
zscale = BitConverter.ToDouble(modelscale[1].ToByteArray(), 0 + 16);
log.InfoFormat("Scale ({0},{1},{2})", xscale, yscale, zscale);
Area = new RectLatLng(y, x, width*xscale, height*yscale);
log.InfoFormat("Coverage {0}", Area.ToString());
GeoTiff.index.Add(this);
/*
short numberOfDirectories = tiff.NumberOfDirectories();
for (short d = 0; d < numberOfDirectories; ++d)
{
tiff.SetDirectory((short)d);
for (ushort t = ushort.MinValue; t < ushort.MaxValue; ++t)
{
TiffTag tag = (TiffTag)t;
FieldValue[] value = tiff.GetField(tag);
if (value != null)
{
for (int j2 = 0; j2 < value.Length; j2++)
{
Console.WriteLine("{0} : {1} : {2}", tag.ToString(), value[j2].Value.GetType().ToString(), value[j2].ToString());
}
}
}
}
*/
}
return true;
}
public void LoadFile(string filename)
{
log.InfoFormat("DTED {0}", filename);
using (var stream = File.OpenRead(filename))
{
byte[] buffer = new byte[80];
stream.Read(buffer, 0, buffer.Length);
var UHL = user_header_label.Match(ASCIIEncoding.ASCII.GetString(buffer));
buffer = new byte[648];
stream.Read(buffer, 0, buffer.Length);
var DSI = data_set_identification.Match(ASCIIEncoding.ASCII.GetString(buffer));
buffer = new byte[2700];
stream.Read(buffer, 0, buffer.Length);
var ACC = accuracy_description.Match(ASCIIEncoding.ASCII.GetString(buffer));
width = int.Parse(UHL.Groups[10].Value);
height = int.Parse(UHL.Groups[11].Value);
log.InfoFormat("Size ({0},{1})", width, height);
// lower left corner
x = DDDMMSSH2DD(UHL.Groups[3].Value);
y = DDDMMSSH2DD(UHL.Groups[4].Value);
log.InfoFormat("Start Point ({0},{1})", x, y);
// scales
xscale = SSSS2DD(UHL.Groups[5].Value);
yscale = SSSS2DD(UHL.Groups[6].Value);
log.InfoFormat("Scale ({0},{1})", xscale, yscale);
// switch top for bottom
y += height * yscale;
Area = new RectLatLng(y, x, width * xscale, height * yscale);
log.InfoFormat("Coverage {0}", Area.ToString());
FileName = filename;
index.Add(this);
}
}
