public double SumOfDistances(ColorRGBAf other)
{
double dist = Math.Abs(red - other.red) + Math.Abs(green - other.green) + Math.Abs(blue - other.blue);
return dist;
}
public static ColorRGBAf GetTweenColor(ColorRGBAf c1, ColorRGBAf c2, float ratioOf2)
{
if (ratioOf2 <= 0)
{
return new ColorRGBAf(c1);
}
if (ratioOf2 >= 1.0)
{
return new ColorRGBAf(c2);
}
// figure out how much of each color we should be.
double ratioOf1 = 1.0 - ratioOf2;
return new ColorRGBAf(
c1.red * ratioOf1 + c2.red * ratioOf2,
c1.green * ratioOf1 + c2.green * ratioOf2,
c1.blue * ratioOf1 + c2.blue * ratioOf2);
}
public ColorRGBAf Blend(ColorRGBAf other, double weight)
{
ColorRGBAf result = new ColorRGBAf(this);
result = this * (1 - weight) + other * weight;
return result;
}
public static ColorRGBAf rgba_pre(ColorRGBAf c)
{
return new ColorRGBAf(c).premultiply();
}
public static ColorRGBAf rgba_pre(ColorRGBAf c, float a)
{
return new ColorRGBAf(c, a).premultiply();
}
static public ColorRGBAf operator *(ColorRGBAf A, double doubleB)
{
float B = (float)doubleB;
ColorRGBAf temp = new ColorRGBAf();
temp.red = A.red * B;
temp.green = A.green * B;
temp.blue = A.blue * B;
temp.alpha = A.alpha * B;
return temp;
}
public static ColorRGBAf FromWaveLength(float wl, float gamma)
{
ColorRGBAf t = new ColorRGBAf(0.0f, 0.0f, 0.0f);
if (wl >= 380.0 && wl <= 440.0)
{
t.red = (float)(-1.0 * (wl - 440.0) / (440.0 - 380.0));
t.blue = 1.0f;
}
else if (wl >= 440.0 && wl <= 490.0)
{
t.green = (float)((wl - 440.0) / (490.0 - 440.0));
t.blue = 1.0f;
}
else if (wl >= 490.0 && wl <= 510.0)
{
t.green = 1.0f;
t.blue = (float)(-1.0 * (wl - 510.0) / (510.0 - 490.0));
}
else if (wl >= 510.0 && wl <= 580.0)
{
t.red = (float)((wl - 510.0) / (580.0 - 510.0));
t.green = 1.0f;
}
else if (wl >= 580.0 && wl <= 645.0)
{
t.red = 1.0f;
t.green = (float)(-1.0 * (wl - 645.0) / (645.0 - 580.0));
}
else if (wl >= 645.0 && wl <= 780.0)
{
t.red = 1.0f;
}
float s = 1.0f;
if (wl > 700.0) s = (float)(0.3 + 0.7 * (780.0 - wl) / (780.0 - 700.0));
else if (wl < 420.0) s = (float)(0.3 + 0.7 * (wl - 380.0) / (420.0 - 380.0));
t.red = (float)Math.Pow(t.red * s, gamma);
t.green = (float)Math.Pow(t.green * s, gamma);
t.blue = (float)Math.Pow(t.blue * s, gamma);
return t;
}
static public ColorRGBAf operator /(ColorRGBAf A, float B)
{
ColorRGBAf temp = new ColorRGBAf();
temp.red = A.red / B;
temp.green = A.green / B;
temp.blue = A.blue / B;
temp.alpha = A.alpha / B;
return temp;
}
static public ColorRGBAf operator /(ColorRGBAf A, ColorRGBAf B)
{
ColorRGBAf temp = new ColorRGBAf();
temp.red = A.red / B.red;
temp.green = A.green / B.green;
temp.blue = A.blue / B.blue;
temp.alpha = A.alpha / B.alpha;
return temp;
}
public static ColorRGBAf AdjustLightness(ColorRGBAf original, double lightnessMultiplier)
{
double hue0To1;
double saturation0To1;
double lightness0To1;
original.GetHSL(out hue0To1, out saturation0To1, out lightness0To1);
lightness0To1 *= lightnessMultiplier;
return FromHSL(hue0To1, saturation0To1, lightness0To1);
}
public ColorRGBAf(ColorRGBAf c, float a_)
{
red = c.red;
green = c.green;
blue = c.blue;
alpha = a_;
}
public ColorRGBAf(ColorRGBAf c)
: this(c, c.alpha)
{
}