public double ToSaturation(
)
{
AHSB hsb = this.ToAHSB();
return(hsb.Brightness == 0 ? m_saturation : hsb.Saturation);
}
public static Color GetPure(
this Color c
)
{
AHSB ahsb = c.Double().ToAHSB();
ahsb.Brightness = 1.0;
ahsb.Saturation = 1.0;
return(ahsb.Double().ToColor());
}
public static DoubleColor Double(
this AHSB ahsb
)
{
double a = ahsb.Alpha;
double hue = ahsb.HueDegree;
double saturation = ahsb.Saturation;
double value = ahsb.Brightness;
DoubleColor ret;
int hi = ((int)(hue / 60)) % 6;
double f = hue / 60 - (int)(hue / 60);
value = value * 255;
double v = value;
double p = (value * (1 - saturation));
double q = (value * (1 - f * saturation));
double t = (value * (1 - (1 - f) * saturation));
if (hi == 0)
{
ret = new DoubleColor(a * 255, v, t, p);
}
else if (hi == 1)
{
ret = new DoubleColor(a * 255, q, v, p);
}
else if (hi == 2)
{
ret = new DoubleColor(a * 255, p, v, t);
}
else if (hi == 3)
{
ret = new DoubleColor(a * 255, p, q, v);
}
else if (hi == 4)
{
ret = new DoubleColor(a * 255, t, p, v);
}
else
{
ret = new DoubleColor(a * 255, v, p, q);
}
ret.HueDegree = hue;
ret.Saturation = saturation;
return(ret);
}
public static DoubleColor AlterHue(
this DoubleColor c,
ColorWheelBase wheel,
double hue
)
{
AHSB src = c.ToAHSB();
AHSB dest = wheel.GetColor(hue).ToAHSB();
dest.Saturation = src.Saturation;
dest.Brightness = src.Brightness;
dest.Alpha = src.Alpha;
return(dest.Double());
}
public static AHSB ToAHSB(
this DoubleColor c
)
{
double a = c.A / 255.0;
double r = c.R / 255.0;
double g = c.G / 255.0;
double b = c.B / 255.0;
AHSB ret;
double max = Math.Max(r, Math.Max(g, b));
double min = Math.Min(r, Math.Min(g, b));
//
// Black - gray - white
//
if (min == max)
{
ret = new AHSB(a, 0, 0, (double)min);
}
else
{
var d = (r == min) ? g - b : ((b == min) ? r - g : b - r);
var h = (r == min) ? 3 : ((b == min) ? 1 : 5);
double hue = 60 * (h - d / (max - min));
double sat = (max - min) / max;
double value = max;
ret = new AHSB(a, hue, sat, value);
}
if (ret.Saturation == 0)
{
ret.HueDegree = c.HueDegree;
}
if (ret.Brightness == 0)
{
ret.Saturation = c.Saturation;
}
return(ret);
}
protected virtual void UpdateHSBComponents(
)
{
AHSB p = m_previous.ToAHSB();
AHSB c = m_color.ToAHSB();
if (p.HueDegree != c.HueDegree)
{
FirePropertyChanged("Hue360");
}
if (p.Saturation255 != c.Saturation255)
{
FirePropertyChanged("Saturation255");
}
if (p.Brightness255 != c.Brightness255)
{
FirePropertyChanged("Brightness255");
}
}
public static AHSB Alter(
this AHSB hsb,
double?hue = null,
double?saturation = null,
double?brightness = null
)
{
if (hue != null)
{
hsb.HueDegree = hue.Value;
}
if (saturation != null)
{
hsb.Saturation = saturation.Value;
}
if (brightness != null)
{
hsb.Brightness = brightness.Value;
}
return(hsb);
}
public void UpdateBaseAngle(
double value
)
{
double hue = value;
double comp = 0.0;
double hue1 = 0.0;
double hue2 = 0.0;
double hue3 = 0.0;
if (m_wheel != null)
{
value = m_wheel.FixAngle(value);
hue = m_wheel.GetColor(value).ToAHSB().HueDegree;
}
switch (m_schema)
{
case PaletteSchemaType.Monochromatic:
for (int i = 0; i < m_colors.Count; ++i)
{
AHSB hsb = m_colors[i].Color;
hsb.HueDegree = hue;
m_colors[i].Color = hsb;
}
break;
case PaletteSchemaType.Complementary:
case PaletteSchemaType.Analogous:
for (int i = 0; i < m_colors.Count; ++i)
{
AHSB hsb = m_colors[i].Color;
hsb.HueDegree = m_colors[i].VectorIndex == 0 ?
hue :
m_wheel.GetColor(value + m_angle).ToAHSB().HueDegree;
m_colors[i].Color = hsb;
}
break;
case PaletteSchemaType.SplitComplementary:
comp = 180;
goto case PaletteSchemaType.SplitAnalogous;
case PaletteSchemaType.Triad:
case PaletteSchemaType.SplitAnalogous:
if (m_wheel != null)
{
hue1 = m_wheel.GetColor(value + comp + m_angle).ToAHSB().HueDegree;
hue2 = m_wheel.GetColor(value + comp - m_angle).ToAHSB().HueDegree;
}
for (int i = 0; i < m_colors.Count; ++i)
{
AHSB hsb = m_colors[i].Color;
int idx = m_colors[i].VectorIndex;
hsb.HueDegree = idx % 3 == 0 ? hue : (idx % 3 == 1 ? hue1 : hue2);
m_colors[i].Color = hsb;
}
break;
case PaletteSchemaType.Quadrants:
hue1 = m_wheel.GetColor(value + 90).ToAHSB().HueDegree;
hue2 = m_wheel.GetColor(value + 180).ToAHSB().HueDegree;
hue3 = m_wheel.GetColor(value + 270).ToAHSB().HueDegree;
for (int i = 0; i < m_colors.Count; ++i)
{
AHSB hsb = m_colors[i].Color;
int idx = m_colors[i].VectorIndex;
hsb.HueDegree = idx % 4 == 0 ? hue : (idx % 4 == 1 ? hue1 : (idx % 4 == 2 ? hue2 : hue3));
m_colors[i].Color = hsb;
}
break;
case PaletteSchemaType.Tetrads:
hue1 = m_wheel.GetColor(value + m_angle).ToAHSB().HueDegree;
hue2 = m_wheel.GetColor(value + 180).ToAHSB().HueDegree;
hue3 = m_wheel.GetColor(value + 180.0 + m_angle).ToAHSB().HueDegree;
for (int i = 0; i < m_colors.Count; ++i)
{
AHSB hsb = m_colors[i].Color;
int idx = m_colors[i].VectorIndex;
hsb.HueDegree = idx % 4 == 0 ? hue : (idx % 4 == 1 ? hue1 : (idx % 4 == 2 ? hue2 : hue3));
m_colors[i].Color = hsb;
}
break;
}
}
///
/// <summary>
/// Generate palette by base color, schema and number of colors.
/// Number of colors should be more than 1</summary>
///
public static Palette Create(
ColorWheelBase wheel,
Color baseColor,
PaletteSchemaType schema = PaletteSchemaType.Complementary,
int colorCount = 5,
double fromSat = 1.0,
double toSat = 0.2,
double fromBri = 0.2,
double toBri = 0.9
)
{
double angle = 30;
double baseAngle = 0;
double alpha = baseColor.A / 255.0;
double incs = 0;
double incb = 0;
AHSB c;
int index = 0;
wheel = wheel ?? new RGBColorWheel();
baseAngle = wheel.GetAngle(baseColor.Double());
if (schema == PaletteSchemaType.Complementary)
{
angle = 180.0;
}
else if (schema == PaletteSchemaType.Quadrants)
{
angle = 90.0;
}
else if (schema == PaletteSchemaType.Triad)
{
angle = 120.0;
}
Palette p = new Palette(wheel)
{
Schema = schema,
Angle = angle
};
if (colorCount > 1)
{
incs = (toSat - fromSat) / (colorCount - 1);
incb = (toBri - fromBri) / (colorCount - 1);
}
for (int i = 0; i < colorCount; ++i)
{
switch (p.Schema)
{
case PaletteSchemaType.Monochromatic:
break;
case PaletteSchemaType.Quadrants:
case PaletteSchemaType.Tetrads:
index = i % 4;
break;
case PaletteSchemaType.Custom:
case PaletteSchemaType.SplitComplementary:
case PaletteSchemaType.SplitAnalogous:
case PaletteSchemaType.Triad:
index = i % 3;
break;
case PaletteSchemaType.Complementary:
case PaletteSchemaType.Analogous:
index = i % 2;
break;
default:
throw new ArgumentException();
}
c = new AHSB(alpha, baseAngle, fromSat, fromBri);
fromSat = AHSB.Fix(fromSat + incs);
fromBri = AHSB.Fix(fromBri + incb);
p.Colors.Add(new PaletteColor()
{
Name = i.ToString(),
VectorIndex = index,
Color = c
});
}
p.BaseAngle = baseAngle;
return(p);
}
public abstract double GetAngle(
AHSB c
);
public override double GetAngle(
AHSB c
)
{
return(ToWheelAngle(c.HueDegree));
}
public override double GetAngle(
AHSB c
)
{
return(c.HueDegree);
}
public static DoubleColor FromAHSB(
AHSB a
)
{
return(a.Double());
}
