public void ConvertFromSRTM(SRTMReader srtm, BitmapChannels channels)
{
int mean = 0, max = 0;
if (channels == BitmapChannels.ChannelRed)
{
for (int i = 0; i < _height; i++)
{
for (int j = 0; j < _width; j++)
{
mean += srtm.GetElevationAt(i, j);
if (max < srtm.GetElevationAt(i, j))
{
max = srtm.GetElevationAt(i, j);
}
}
mean /= _width;
}
}
for (int i = 0; i < _height; i++)
{
for (int j = 0; j < _width; j++)
{
Int16 height = srtm.GetElevationAt(i, j);
byte[] heightArray = BitConverter.GetBytes(height);
if (channels == BitmapChannels.ChannelRed)
{
int rHeight = height - max;
float pointHeight = (float)rHeight / (float)max;
_bitmap.SetPixel(j, i, Color.FromArgb(255, (byte)(pointHeight * 255), 0, 0));
}
else if (channels == (BitmapChannels.ChannelRed | BitmapChannels.ChannelGreen))
{
_bitmap.SetPixel(j, i, Color.FromArgb(255, heightArray[0], heightArray[1], 0));
}
}
}
}
static void Main(string[] args)
{
if (args.Length < 1)
{
WriteInstructions();
}
else
{
bool verbose = false;
int i = 0, count = args.Length;
if (args[0] == "-verbose")
{
verbose = true;
i++;
if (args.Length == 1)
{
WriteInstructions();
Environment.Exit(0);
}
}
for (; i < count; i++)
{
try
{
FileStream file = File.Open(args[i], FileMode.Open);
BinaryReader reader = new BinaryReader(file);
SRTMFormat format = SRTMFormat.Unknown;
if (file.Length == 3601 * 3601 * sizeof(Int16))
{
format = SRTMFormat.SRTM1;
}
else if (file.Length == 1201 * 1201 * sizeof(Int16))
{
format = SRTMFormat.SRTM3;
}
if (verbose)
{
Console.WriteLine("Reading SRTM file: " + args[i]);
Console.WriteLine(" - Length: " + file.Length + " Bytes");
Console.WriteLine(" - Format: " + format.ToString() + Environment.NewLine);
}
SRTMReader srtm = new SRTMReader(reader, format);
srtm.ReadAllData(false);
BitmapTerrain bmpTerrain = new BitmapTerrain(srtm.GetTileSize(), srtm.GetTileSize());
bmpTerrain.ConvertFromSRTM(srtm, BitmapChannels.ChannelRed | BitmapChannels.ChannelGreen);
if (verbose)
{
Console.WriteLine("Writing TIFF file from SRTM file...");
}
string tiffPath = args[i];
int dot = tiffPath.IndexOf('.');
tiffPath = tiffPath.Substring(0, dot);
tiffPath += ".tiff";
TIFFWriter.ExportTIFF(bmpTerrain.GetBitmap(), tiffPath);
if (verbose)
{
Console.WriteLine("Success" + Environment.NewLine);
}
}
catch (Exception ex)
{
if (verbose)
{
Console.WriteLine("Couldn't convert SRTM file:");
Console.WriteLine(ex.Message + Environment.NewLine);
}
}
}
}
}