public static (double hue, double saturation, double intensity, double alpha) RGBAFColorToHSIAColor1(double red, double green, double blue, double alpha)
{
(double hue, double saturation, double intensity, double alpha)color = (0d, 0d, 0d, alpha);
var m = Min3DoubleTests.Min(red, green, blue);
var M = Max3Double.Max(red, green, blue);
var c = M - m;
if (ValidateRGBAFloatTests.ValidateRGBAF(red, green, blue, alpha) == true)
{
color.intensity = 1d / 3d * (red + green + blue);
if (c == 0)
{
color.hue = 0d;
color.saturation = 0d;
}
else
{
if (M == red)
{
color.hue = IEEERemainder((green - blue) / c, 6d);
}
else if (M == green)
{
color.hue = ((blue - red) / c) + 2d;
}
else if (M == blue)
{
color.hue = ((red - green) / c) + 4d;
}
color.hue *= 60d;
color.saturation = 1d - (m / color.intensity);
}
}
return(color);
}
public static (double hue, double saturation, double value, double alpha) RGBAFColorToHSVAColor1(double red, double green, double blue, double alpha)
{
(double hue, double saturation, double value, double alpha)color = (0d, 0d, 0d, alpha);
if (ValidateRGBAFloatTests.ValidateRGBAF(red, green, blue, alpha) == true)
{
var M = Max3Double.Max(red, green, blue);
var m = Min3DoubleTests.Min(red, green, blue);
var c = M - m;
color.value = M;
if (c != 0d)
{
if (M == red)
{
color.hue = IEEERemainder((green - blue) / c, 6d);
}
else if (M == green)
{
color.hue = ((blue - red) / c) + 2d;
}
else /*if(M==b)*/
{
color.hue = ((red - green) / c) + 4d;
}
color.hue *= 60d;
color.saturation = c / color.value;
}
}
return(color);
}
public static (double y, double i, double q, double alpha) RGBAFColorToYIQAColor1(double red, double green, double blue, double alpha)
{
if (!ValidateRGBAFloatTests.ValidateRGBAF(red, green, blue, alpha))
{
throw new ArgumentOutOfRangeException("A parameter is out of range.");
}
return(
y : (0.299900d * red) + (0.587000d * green) + (0.114000d * blue),
i : (0.595716d * red) - (0.274453d * green) - (0.321264d * blue),
q : (0.211456d * red) - (0.522591d * green) + (0.311350d * blue),
alpha
);
}
public static (byte red, byte green, byte blue, byte alpha) RGBAFColorToRGBAColor1(double red, double green, double blue, double alpha)
{
if (!ValidateRGBAFloatTests.ValidateRGBAF(red, green, blue, alpha))
{
throw new ArgumentOutOfRangeException("A parameter is out of range.");
}
var d = RGBMax + 0.5d;
return(
red : (byte)(red * d),
green : (byte)(green * d),
blue : (byte)(blue * d),
alpha : (byte)(alpha * d)
);
}
public static (double y, double u, double v, double alpha) RGBAFColorToYUVAColor1(double red, double green, double blue, double alpha)
{
if (!ValidateRGBAFloatTests.ValidateRGBAF(red, green, blue, alpha))
{
throw new ArgumentOutOfRangeException("A parameter is out of range.");
}
var y = (0.299d * red) + (0.587d * green) + (0.114d * blue);
return(
y,
u : 0.492d * (blue - y), // u: 0.565 * (b - y),
v : 0.877d * (red - y), // v: 0.713d * (r - y)
alpha
);
}
