public static ChunkyDataPTLD CreateFromTGA(PTLD_Layers layer_in, int version, string name, byte[] tgaData)
{
//check image type code
if (tgaData[2] != 0x03)
{
bool worked = false;
if (tgaData[1] == 0x01 && tgaData[2] == 0x01)
{
tgaData = ImageConverter.ColourMapToGreyscale(tgaData);
worked = true;
}
if (!worked)
{
ImageConverter.MapEncStruct format = ImageConverter.getMapEncStruct(tgaData[2]);
throw new InvalidFileException("_" + layer_in.ToString() + ".tga must be an unencoded unmapped monochrome Targa image.\r\n" +
" Image type: " + format.formatType + "\r\n" +
" Image encoded: " + ((format.isEncoded)?"yes":"no") + "\r\n" +
" Colour mapped: " + ((format.isMapped)?"yes":"no"));
}
}
//check colour depth
if (tgaData[16] != 0x08)
{
throw new InvalidFileException("_" + layer_in.ToString() + ".tga must be an 8-bit Targa image. Image was " + tgaData[16] + "-bit.");
}
int width = tgaData[12] + (tgaData[13] << 8);
int height = tgaData[14] + (tgaData[15] << 8);
byte[] data = new byte[width * height + 8]; //only take the correct number of bytes so that we don't include comments
int layerDataLength = data.Length - 8;
int layer = (int)layer_in;
data[0] = (byte)(layer);
data[1] = (byte)(layer >> 8);
data[2] = (byte)(layer >> 16);
data[3] = (byte)(layer >> 24);
data[4] = (byte)layerDataLength;
data[5] = (byte)(layerDataLength >> 8);
data[6] = (byte)(layerDataLength >> 16);
data[7] = (byte)(layerDataLength >> 24);
int offset = 10 + tgaData[0]; //should be 18, but we're starting at i=8 so remove 8 here as well
bool nonBlack = false; //boolean to check whether they actually included any data in the layer
for (int i = 8; i < data.Length; i++)
{
data[i] = tgaData[i + offset]; //take in to account any possible image ID
if (data[i] > 5)
{
nonBlack = true;
}
}
//make sure we always return a dirt layer, even if they made it all black (all teamcolourable)
if (nonBlack || layer_in == PTLD_Layers.Dirt)
{
return(new ChunkyDataPTLD(version, name, data));
}
else
{
return(null);
}
}
public override void Save(DirectoryInfo dir, string fileBaseName)
{
FileStream str = new FileStream(dir.FullName.TrimEnd(Path.DirectorySeparatorChar) + Path.DirectorySeparatorChar + fileBaseName + "_" + layerType.ToString() + ".tga", FileMode.Create);
BinaryWriter bw = new BinaryWriter(str);
bw.Write(TGA_Greyscale_Header_a);
bw.Write((ushort)Info.Width);
bw.Write((ushort)Info.Height);
bw.Write(TGA_Greyscale_Header_b);
bw.Write(image);
bw.Flush();
bw.Close();
}
