public void GetPalette(Rgb565[] palette, int index = 0)
{
if (palette == null)
{
throw new ArgumentNullException("palette");
}
if (index < 0)
{
throw new ArgumentOutOfRangeException("index");
}
if (palette.Length - index < 4)
{
throw new ArgumentOutOfRangeException("index");
}
var c0 = Rgb0;
var c1 = Rgb1;
palette[index + 0] = c0;
palette[index + 1] = c1;
if (HasTransparentValues)
{
var interp = new Rgb565();
interp.R = (c0.R + c1.R) / 2;
interp.G = (c0.G + c1.G) / 2;
interp.B = (c0.B + c1.B) / 2;
palette[index + 2] = interp;
palette[index + 3] = new Rgb565(0);
}
else
{
var interp = new Rgb565();
interp.R = (c0.R * 2 + c1.R) / 3;
interp.G = (c0.G * 2 + c1.G) / 3;
interp.B = (c0.B * 2 + c1.B) / 3;
palette[index + 2] = interp;
interp.R = (c0.R + c1.R * 2) / 3;
interp.G = (c0.G + c1.G * 2) / 3;
interp.B = (c0.B + c1.B * 2) / 3;
palette[index + 3] = interp;
}
}
public BC1Block(Rgb565 r0, Rgb565 r1)
{
PackedValue = ((ulong)r1.PackedValue << 16) | r0.PackedValue;
}