public BitMapFile(FileStream file)
{
BinaryReader readerMachine = new(file);
header = readerMachine.ReadBytes(54);
MemoryStream savedData = new(header, 0, 54);
BinaryReader dataReader = new(savedData);
dataReader.ReadBytes(18); // we skip unnecessary information
Width = dataReader.ReadInt32();
Height = dataReader.ReadInt32();
dataReader.ReadBytes(2); // we skip unnecessary information
bitsPerPixel = dataReader.ReadInt16();
savedData.Close();
dataReader.Close();
if (bitsPerPixel == 24)
{
CountRowRgb = (3 * Width + Width % 4) / 3;
channels = 3;
}
else if (bitsPerPixel == 32)
{
CountRowRgb = Width;
channels = 4;
}
else
{
throw new Exception("Unsupported bitness of file.");
}
ImageRgb = new Rgb[Height, CountRowRgb];
for (int i = Height - 1; i >= 0; i--)
{
for (int j = CountRowRgb - 1; j >= 0; j--)
{
ImageRgb[i, j] = new Rgb(readerMachine.ReadBytes(channels));
}
}
readerMachine.Close();
}
private static byte GreyScale(Rgb pixel)
{
return(Convert.ToByte((0.3 * pixel.Blue) + (0.6 * pixel.Green) + (0.1 * pixel.Red)));
}
