public static byte getChannelSelectionByte(Color color1, ChannelSelection selection)
{
switch (selection)
{
case ChannelSelection.R:
return(color1.R);
case ChannelSelection.G:
return(color1.G);
case ChannelSelection.B:
return(color1.B);
case ChannelSelection.A:
return(color1.A);
case ChannelSelection.RGB:
{
double r = color1.R, g = color1.G, b = color1.B;
r /= 255;
g /= 255;
b /= 255;
double lum = r * 0.22 + g * 0.707 + b * 0.071;
return((byte)(lum * 255));
}
default:
return(0);
}
}
public static double getChannelSelection(Color color1, ChannelSelection selection)
{
switch (selection)
{
case ChannelSelection.R:
return((double)color1.R / 255);
case ChannelSelection.G:
return((double)color1.G / 255);
case ChannelSelection.B:
return((double)color1.B / 255);
case ChannelSelection.A:
return((double)color1.A / 255);
case ChannelSelection.RGB:
{
double r = color1.R, g = color1.G, b = color1.B;
r /= 255;
g /= 255;
b /= 255;
double lum = r * 0.22 + g * 0.707 + b * 0.071;
return(lum);
}
default:
return(0);
}
}
public NormGenerator(IBitmap source, IBitmap mask, ChannelSelection sourceChannel, NormParams opts, double workStart, double workDivisor)
{
Debug.WriteLine("Worker constructor enter");
this.src = source;
this.mask = mask;
this.parameters = opts;
this.sourceChannel = sourceChannel;
this.workStart = workStart;
this.workDiv = workDivisor;
Debug.WriteLine("Worker constructor exit");
}
private static BitmapSource GetTwoChanneledImage(byte[] src, int width, int height, ChannelSelection cs1, ChannelSelection cs2)
{
var result = new WriteableBitmap(width, height, Dpi, Dpi, PixelFormats.Rgb24, null);
var buf = new byte[width * height * 3];
for (int i = 0; i < width * height; i++)
{
if (cs1 == ChannelSelection.Red)
{
buf[i * 3] = src[i * 2];
}
if (cs1 == ChannelSelection.Green)
{
buf[i * 3 + 1] = src[i * 2];
}
if (cs1 == ChannelSelection.Blue)
{
buf[i * 3 + 2] = src[i * 2];
}
if (cs1 == ChannelSelection.Red)
{
buf[i * 3] = src[i * 2 + 1];
}
if (cs1 == ChannelSelection.Green)
{
buf[i * 3 + 1] = src[i * 2 + 1];
}
if (cs1 == ChannelSelection.Blue)
{
buf[i * 3 + 2] = src[i * 2 + 1];
}
}
result.WritePixels(new Int32Rect(0, 0, width, height), buf, width, 0);
result.Freeze();
return(result);
}
