public void BlendRgbColors()
{
var color1 = RGBColor.FromRGB8Bit(255, 0, 0);
var color2 = RGBColor.FromRGB8Bit(0, 0, 255);
var rgbToLinear = new ConverterBuilder().FromRGB().ToLinearRGB().Build();
var linear1 = rgbToLinear.Convert(color1);
var linear2 = rgbToLinear.Convert(color2);
var linearBlend = new LinearRGBColor(
(linear1.R + linear2.R) / 2,
(linear1.G + linear2.G) / 2,
(linear1.B + linear2.B) / 2);
var linearToRgb = new ConverterBuilder().FromLinearRGB().ToRGB().Build();
var blend = linearToRgb.Convert(linearBlend);
blend.ToRGB8Bit(out var r, out var g, out var b);
Assert.Equal(188, r);
Assert.Equal(0, g);
Assert.Equal(188, b);
}
public void HowToComputeTemperatureOfAColor()
{
RGBColor color = RGBColor.FromRGB8Bit(255, 121, 0);
IColorConverter <RGBColor, xyChromaticity> converter = new ConverterBuilder().FromRGB(RGBWorkingSpaces.sRGB).Toxy(Illuminants.D65).Build();
xyChromaticity chromaticity = converter.Convert(color); // xy [x=0.55, y=0.4]
// asserts
Assert.Equal(0.55117772083302841, chromaticity.x, DoubleComparer);
Assert.Equal(0.40053533933847751, chromaticity.y, DoubleComparer);
double temperature = CCTConverter.GetCCTOfChromaticity(chromaticity); // 1293 K
// asserts
Assert.Equal(1293.0206041090441, temperature, DoubleComparer);
}
public void SamplesRgb()
{
// red
var c1 = new RGBColor(0.937, 0.2, 0.251);
var c2 = RGBColor.FromRGB8Bit(239, 51, 64);
var c3 = RGBColor.FromColor(Color.FromArgb(239, 51, 64));
// gray
var c4 = new RGBColor(0.5, 0.5, 0.5);
var c5 = RGBColor.FromGray(0.5);
// white
var c6 = new RGBColor(1, 1, 1);
// black
var c7 = new RGBColor(0, 0, 0);
}
public async Task UserRoleColor(SocketRole role, HexColor color)
{
if (_uow.UserRoleColorBindings.HasBinding(Context.User.Id, role))
{
var allowedRoleColors = (Context.User as IGuildUser).GetRoles().Select(r => r.Color).ToArray();
var forbiddenRoleColors = Context.Guild.Roles.Where(r => r.IsHoisted && r.Id != role.Id);
var converter = new ConverterBuilder().FromRGB().ToLab().Build();
var colorDifference = new CIEDE2000ColorDifference();
var requestedColor = converter.Convert(color.ToRGBColor());
var similarityRadius = _uow.GuildConfigs.For(Context.Guild.Id).ColorMetricSimilarityRadius;
var similarlyColoredRole = forbiddenRoleColors.FirstOrDefault(c => colorDifference.ComputeDifference(requestedColor, converter.Convert(RGBColor.FromRGB8Bit(c.Color.R, c.Color.G, c.Color.B))) < similarityRadius);
if (similarlyColoredRole == null || allowedRoleColors.Any(c => colorDifference.ComputeDifference(requestedColor, converter.Convert(RGBColor.FromRGB8Bit(c.R, c.G, c.B))) < similarityRadius))
{
await role.ModifyAsync(rp => rp.Color = color).ConfigureAwait(false);
await ReplyConfirmLocalized("userrolecolor_changed", role.Name, color).ConfigureAwait(false);
}
else
{
await ReplyErrorLocalized("userrolecolor_color_too_similar", color, similarlyColoredRole.Name).ConfigureAwait(false);
}
}
else
{
await ReplyErrorLocalized("userrolecolor_no_binding", role.Name).ConfigureAwait(false);
}
}
public RGBColor ToRGBColor() => RGBColor.FromRGB8Bit(Red, Green, Blue);
