public static Pixel32 ApplyColorFilter(Pixel32 pixel, ColorFilter filter)
{
switch (filter)
{
case ColorFilter.Magenta:
return(new Pixel32(pixel.A, pixel.R, 0, pixel.B));
case ColorFilter.Yellow:
return(new Pixel32(pixel.A, pixel.R, pixel.G, 0));
case ColorFilter.Cyan:
return(new Pixel32(pixel.A, 0, pixel.G, pixel.B));
case ColorFilter.Red:
return(new Pixel32(pixel.A, pixel.R, 0, 0));
case ColorFilter.Green:
return(new Pixel32(pixel.A, 0, pixel.G, 0));
case ColorFilter.Blue:
return(new Pixel32(pixel.A, 0, 0, pixel.B));
default:
return(pixel);
}
}
public static byte Lightness(Pixel32 pixel)
{
var max = MathUtils.Max(pixel.R, pixel.G, pixel.B);
var min = MathUtils.Min(pixel.R, pixel.G, pixel.B);
return(MathUtils.RoundToByte(0.5d * (max + min)));
}
public void Add(Pixel32 pixel)
{
Count++;
RedSum += pixel.R;
GreenSum += pixel.G;
BlueSum += pixel.B;
}
public static Pixel32 Sepia(Pixel32 pixel, int level)
{
var r = MathUtils.ByteClamp(pixel.R + 2 * level);
var g = MathUtils.ByteClamp(pixel.G + level);
var b = pixel.B;
return(new Pixel32(pixel.A, r, g, b));
}
public static Image <Pixel32> Inversion(this Image <Pixel32> image, Pixel32 inversionPoint)
{
Pixel32 pixelOperator(Pixel32 pixel)
{
var r = Inversion(pixel.R, inversionPoint.R);
var g = Inversion(pixel.G, inversionPoint.G);
var b = Inversion(pixel.B, inversionPoint.B);
return(new Pixel32(pixel.A, r, g, b));
};
return(image.Inversion(pixelOperator));
}
public void Add(Pixel32 pixel)
{
var intensity = MathUtils.FloorToInt((pixel.R + pixel.G + pixel.B) * q);
OilPaintIntensity oilPaintIntensity;
if (intensities.ContainsKey(intensity))
{
oilPaintIntensity = intensities[intensity];
}
else
{
oilPaintIntensity = new OilPaintIntensity();
intensities.Add(intensity, oilPaintIntensity);
}
oilPaintIntensity.Add(pixel);
}
public CMYK(Pixel32 pixel)
{
var nr = pixel.R / 255d;
var ng = pixel.G / 255d;
var nb = pixel.B / 255d;
K = 1d - MathUtils.Max(nr, ng, nb);
var den = 1d - K;
C = M = Y = 0d;
if (den != 0d)
{
C = GetComponent(nr, den);
M = GetComponent(ng, den);
Y = GetComponent(nb, den);
}
K = MathUtils.Clamp(100d * K, 0d, 100d);
}
public HSV(Pixel32 pixel)
{
var r = pixel.R;
var g = pixel.G;
var b = pixel.B;
var cmin = MathUtils.Min(r, g, b);
var cmax = MathUtils.Max(r, g, b);
var delta = cmax - cmin;
H = 0d;
if (delta == 0)
{
H = 0d;
}
else if (cmax == r)
{
H = (((g - b) / (double)delta) % 6) * 60;
}
else if (cmax == g)
{
H = (((b - r) / (double)delta) + 2) * 60;
}
else if (cmax == b)
{
H = (((r - g) / (double)delta) + 4) * 60;
}
H = MathUtils.Clamp(H, 0d, 360d);
S = 0d;
if (cmax != 0)
{
S = MathUtils.Clamp(100d * delta / cmax, 0d, 100d);
}
V = MathUtils.Clamp(100d * cmax / 255d, 0d, 100d);
}
public static Image <Pixel32> ColorAccent(this Image <Pixel32> image, Pixel32 color, double hueRange)
{
return(image.ColorAccent(color.ToHSV().H, hueRange));
}
public static byte Luminance(Pixel32 pixel)
{
return(MathUtils.RoundToByte(0.3d * pixel.R + 0.59d * pixel.G + 0.11d * pixel.B));
}
public static byte Average(Pixel32 pixel)
{
double q = 1d / 3d;
return(MathUtils.RoundToByte(q * (pixel.R + pixel.G + pixel.B)));
}
