public static StandardRgbBitmap ToStandardRgbBitmap(this BitmapSource bitmap)
{
BitmapSource convertedSource = bitmap;
if (bitmap.Format != PixelFormats.Bgra32)
{
convertedSource = new FormatConvertedBitmap(bitmap, PixelFormats.Bgra32, null, 1.0);
}
int stride = convertedSource.PixelWidth * sizeof(int);
byte[] rawPixels = new byte[stride * convertedSource.PixelHeight];
convertedSource.CopyPixels(rawPixels, stride, offset: 0);
StandardRgbColor[] pixels = new StandardRgbColor[convertedSource.PixelWidth * convertedSource.PixelHeight];
for (int i = 0; i < rawPixels.Length; i += 4)
{
int target = i / 4;
pixels[target].B = rawPixels[i];
pixels[target].G = rawPixels[i + 1];
pixels[target].R = rawPixels[i + 2];
}
return(new StandardRgbBitmap(pixels, bitmap.PixelWidth, bitmap.PixelHeight, bitmap.DpiX, bitmap.DpiY));
}
public Task <StandardRgbColor[]> RenderAsync()
{
return(Task.Run(() =>
{
StandardRgbColor[] bitmap = new StandardRgbColor[pixelClusters.Length];
Parallel.For(0, pixelClusters.Length, i =>
{
bitmap[i] = colorSpace.ConvertToStandardRgb(clusterMeans[pixelClusters[i]]);
});
return bitmap;
}));
}
public static bool TryParse(string raw, out StandardRgbColor color)
{
if (ColorConverter.ConvertFromString(raw) is Color c)
{
color.R = c.R;
color.G = c.G;
color.B = c.B;
return(true);
}
else
{
color = default(StandardRgbColor);
return(false);
}
}
public static LinearRgbColor ToLinearRgb(this StandardRgbColor source)
{
float sR = source.R / 255.0f;
float sG = source.G / 255.0f;
float sB = source.B / 255.0f;
return(new LinearRgbColor
{
R = convertGammaToLinear(sR),
G = convertGammaToLinear(sG),
B = convertGammaToLinear(sB)
});
float convertGammaToLinear(float u)
{
return(u <= 0.04045f ? u / 12.92f : (float)Math.Pow((u + 0.055) / 1.055, 2.4));
}
}
public Vector3 ConvertFromStandardRgb(StandardRgbColor pixel)
{
return((Vector3)pixel.ToCieLuv());
}
public static Color ToWindowsColor(this StandardRgbColor pixel)
{
return(Color.FromRgb(pixel.R, pixel.G, pixel.B));
}
public static CieLuvColor ToCieLuv(this StandardRgbColor source)
{
return(source.ToLinearRgb().ToCieLuv());
}
public WeightedColor(int pixelCount, StandardRgbColor color)
{
PixelCount = pixelCount;
Color = color;
}
