public static ColorBgra Blend(ColorBgra ca, ColorBgra cb, double blend)
{
double num = 1.0 - blend;
double num2 = blend;
double linearLevel = (SrgbGamma.ToLinear(ca.R) * num) + (SrgbGamma.ToLinear(cb.R) * num2);
double num4 = (SrgbGamma.ToLinear(ca.G) * num) + (SrgbGamma.ToLinear(cb.G) * num2);
double num5 = (SrgbGamma.ToLinear(ca.B) * num) + (SrgbGamma.ToLinear(cb.B) * num2);
double num6 = (ca.A * num) + (cb.A * num2);
return(ColorBgra.FromBgra((byte)(0.5 + (255.0 * SrgbGamma.ToSrgbClamped(num5))), (byte)(0.5 + (255.0 * SrgbGamma.ToSrgbClamped(num4))), (byte)(0.5 + (255.0 * SrgbGamma.ToSrgbClamped(linearLevel))), (byte)(0.5 + num6)));
}
public static ColorBgra Blend(ColorBgra ca, ColorBgra cb, byte cbAlpha)
{
double num = ((0xff - ca.A) * cbAlpha) * 1.5378700499807768E-05;
double num2 = (ca.B * cbAlpha) * 1.5378700499807768E-05;
double num3 = num + num2;
if (num3 < 0.00196078431372549)
{
return(ColorBgra.Transparent);
}
double num4 = 1.0 / num3;
double linearLevel = ((SrgbGamma.ToLinear(ca.R) * num) + (SrgbGamma.ToLinear(cb.R) * num2)) * num4;
double num6 = ((SrgbGamma.ToLinear(ca.G) * num) + (SrgbGamma.ToLinear(cb.G) * num2)) * num4;
double num7 = ((SrgbGamma.ToLinear(ca.B) * num) + (SrgbGamma.ToLinear(cb.B) * num2)) * num4;
return(ColorBgra.FromBgra((byte)(0.5 + (255.0 * SrgbGamma.ToSrgb(num7))), (byte)(0.5 + (255.0 * SrgbGamma.ToSrgb(num6))), (byte)(0.5 + (255.0 * SrgbGamma.ToSrgb(linearLevel))), (byte)(0.5 + (255.0 * num3))));
}
public static unsafe ColorBgra Blend(ColorBgra *colors, int count)
{
if (count < 0)
{
throw new ArgumentOutOfRangeException("count must be 0 or greater");
}
if (count == 0)
{
return(ColorBgra.Transparent);
}
ulong num = 0L;
double num2 = 0.0;
for (int i = 0; i < count; i++)
{
num += colors[i].A;
num2 += SrgbGamma.ToLinear(colors[i].A);
}
byte a = (byte)(0.5 + (((double)num) / ((double)count)));
double num5 = num2 / ((double)count);
if (a == 0)
{
return(ColorBgra.Transparent);
}
double num6 = 0.0;
double num7 = 0.0;
double num8 = 0.0;
for (int j = 0; j < count; j++)
{
double num10 = colors[j].A * 1.5378700499807768E-05;
num7 += SrgbGamma.ToLinear((double)(num10 * colors[j].G));
num8 += SrgbGamma.ToLinear((double)(num10 * colors[j].R));
}
double num11 = (255.0 * count) / ((double)num);
byte b = (byte)(0.5 + ((255.0 * SrgbGamma.ToSrgbClamped(num6 / ((double)count))) * num11));
byte g = (byte)(0.5 + ((255.0 * SrgbGamma.ToSrgbClamped(num7 / ((double)count))) * num11));
byte r = (byte)(0.5 + ((255.0 * SrgbGamma.ToSrgbClamped(num8 / ((double)count))) * num11));
return(ColorBgra.FromBgra(b, g, r, a));
}