/// <summary>
/// Creates color from HSB color space with random hue and saturation and brighness equal to 1.
/// </summary>
/// <returns></returns>
public static Color CreateColorWithRandomHue()
{
double hue = random.NextDouble() * 360;
HsbColor hsbColor = new HsbColor(hue, 1, 1);
return(hsbColor.ToArgbColor());
}
/// <summary>
/// Creates HSBColor from the ARGB color.
/// </summary>
/// <param name="color">The color.</param>
/// <returns></returns>
public static HsbColor FromArgbColor(Color color)
{
double limit255 = 255;
double r = color.R / limit255;
double g = color.G / limit255;
double b = color.B / limit255;
double max = Math.Max(Math.Max(r, g), b);
double min = Math.Min(Math.Min(r, g), b);
double len = max - min;
double brightness = max; // 0.5 * (max + min);
double sat;
double hue;
if (max == 0 || len == 0)
{
sat = hue = 0;
}
else
{
sat = len / max;
if (r == max)
{
hue = (g - b) / len;
}
else if (g == max)
{
hue = 2 + (b - r) / len;
}
else
{
hue = 4 + (r - g) / len;
}
}
hue *= 60;
if (hue < 0)
{
hue += 360;
}
HsbColor res = new HsbColor();
res.hue = hue;
res.saturation = sat;
res.brightness = brightness;
res.alpha = color.A / limit255;
return(res);
}
public static Color[] CreateRandomColors(int colorNum)
{
double startHue = random.NextDouble() * 360;
Color[] res = new Color[colorNum];
double hueStep = 360.0 / colorNum;
for (int i = 0; i < res.Length; i++)
{
double hue = startHue + i * hueStep;
res[i] = new HsbColor(hue, 1, 1).ToArgbColor();
}
return(res);
}
/// <summary>
/// Determines whether the specified <see cref="object"/> is equal to this instance.
/// </summary>
/// <param name="obj">The <see cref="object"/> to compare with this instance.</param>
/// <returns>
/// <c>true</c> if the specified <see cref="object"/> is equal to this instance; otherwise, <c>false</c>.
/// </returns>
public override bool Equals(object obj)
{
if (obj is HsbColor)
{
HsbColor c = (HsbColor)obj;
return(c.alpha == alpha &&
c.brightness == brightness &&
c.hue == hue &&
c.saturation == saturation);
}
else
{
return(false);
}
}
public static SolidColorBrush ChangeSaturation(this SolidColorBrush brush, double saturationFactor)
{
Color color = brush.Color;
HsbColor hsbColor = HsbColor.FromArgbColor(color);
hsbColor.Saturation *= saturationFactor;
if (hsbColor.Saturation > 1.0)
{
hsbColor.Saturation = 1.0;
}
SolidColorBrush result = new SolidColorBrush(hsbColor.ToArgbColor());
return(result);
}
public static SolidColorBrush ChangeLightness(this SolidColorBrush brush, double lightnessFactor)
{
Color color = brush.Color;
HsbColor hsbColor = HsbColor.FromArgbColor(color);
hsbColor.Brightness *= lightnessFactor;
if (hsbColor.Brightness > 1.0)
{
hsbColor.Brightness = 1.0;
}
SolidColorBrush result = new SolidColorBrush(hsbColor.ToArgbColor());
return(result);
}
public static HsbColor ToHsbColor(this Color color)
{
return(HsbColor.FromArgbColor(color));
}
