public static string ToSql(this Enum value)
{
if (value == null)
{
return("Null");
}
TypeCode typeCode = value.GetTypeCode();
ConvertionMethod convertion = (ConvertionMethod)EnumExtensions.Convertions[typeCode] ?? (ConvertionMethod)(args => { throw new NotImplementedException(); });
string result = convertion(value);
return(result);
}
public static byte[] FromBitmap(Bitmap bmp, ConvertionMethod method, DitheringMethod dither, bool serpentine, int grayScaleDepth)
{
if (!(new[] { 2, 4, 8, 16, 32, 64, 128, 256 }).Contains(grayScaleDepth))
{
throw new Exception("GrayScaleDepth must be a power of 2 between 1 and 254");
}
byte[] output = new byte[0];
output = ConvertToGrayscale(bmp, method, grayScaleDepth);
output = Dither(output, grayScaleDepth, bmp.Width, bmp.Height, dither, serpentine);
return(output);
}
public static byte[] ConvertToGrayscale(Bitmap bmp, ConvertionMethod method, int grayScaleDepth)
{
byte[] output = new byte[0];
switch (method)
{
case ConvertionMethod.Average:
output = ConvAverage(bmp, grayScaleDepth, 1 / 3.0, 1 / 3.0, 1 / 3.0);
break;
case ConvertionMethod.AverageBT709:
output = ConvAverage(bmp, grayScaleDepth, 0.2126, 0.7152, 0.0722);
break;
case ConvertionMethod.AverageBT601:
output = ConvAverage(bmp, grayScaleDepth, 0.299, 0.587, 0.114);
break;
case ConvertionMethod.Desaturation:
output = ConvDesaturation(bmp, grayScaleDepth);
break;
case ConvertionMethod.DecompositionMax:
output = ConvDecompositionMax(bmp, grayScaleDepth);
break;
case ConvertionMethod.DecompositionMin:
output = ConvDecompositionMin(bmp, grayScaleDepth);
break;
case ConvertionMethod.SingleChannelRed:
output = ConvSingleChannel(bmp, grayScaleDepth, Color.Red);
break;
case ConvertionMethod.SingleChannelGreen:
output = ConvSingleChannel(bmp, grayScaleDepth, Color.Green);
break;
case ConvertionMethod.SingleChannelBlue:
output = ConvSingleChannel(bmp, grayScaleDepth, Color.Blue);
break;
default:
throw new ArgumentOutOfRangeException(nameof(method), method, null);
}
return(output);
}
