public override void Add(ColorD c)
{
m_r += c.R;
m_g += c.G;
m_b += c.B;
m_count++;
}
public override void Add(ColorD c)
{
c = c.FromGamma(2.2);
m_r += c.R;
m_g += c.G;
m_b += c.B;
m_count++;
}
public override ColorD GetAvg48()
{
if (m_count == 0)
{
return new ColorD();
}
else
{
ColorD ret = new ColorD(m_r / ((double)m_count), m_g / ((double)m_count), m_b / ((double)m_count));
ret = ret.ToGamma(2.2);
return ret;
}
}
public override Color GetAvg()
{
if (m_count == 0)
{
return Color.FromArgb(0, 0, 0);
}
else
{
ColorD ret = new ColorD(m_r / ((double)m_count), m_g / ((double)m_count), m_b / ((double)m_count));
ret = ret.ToGamma(2.2);
return Utils.Dither(ret);
}
}
public static Color Dither(ColorD color)
{
double r = color.R;
double g = color.G;
double b = color.B;
r = r * 255.0 + Rnd.NextDouble();
g = g * 255.0 + Rnd.NextDouble();
b = b * 255.0 + Rnd.NextDouble();
return Color.FromArgb(
Math.Min(255, Math.Max(0, (int)r)),
Math.Min(255, Math.Max(0, (int)g)),
Math.Min(255, Math.Max(0, (int)b)));
}
public unsafe void Set(int x, int y, Color c, ColorD for48)
{
if (x < 0 || x >= m_width || y < 0 || y >= m_height || m_r == null)
{
throw new Exception();
}
((int*)m_data.Scan0)[x + y * m_data.Stride / 4] = c.ToArgb();
m_r[x, y] = (UInt16)(Math.Max(0.0, Math.Min(1.0, for48.R)) * ((double)UInt16.MaxValue));
m_g[x, y] = (UInt16)(Math.Max(0.0, Math.Min(1.0, for48.G)) * ((double)UInt16.MaxValue));
m_b[x, y] = (UInt16)(Math.Max(0.0, Math.Min(1.0, for48.B)) * ((double)UInt16.MaxValue));
}
public ColorD(double A, ColorD color)
{
m_R = color.R;
m_G = color.G;
m_B = color.B;
m_A = A;
}
public static ColorYUV FromColorD(ColorD from)
{
return new ColorYUV(from.A,
0.299 * from.R + 0.587 * from.G + 0.114 * from.B,
-0.14713 * from.R - 0.28886 * from.G + 0.436 * from.B,
0.615 * from.R - 0.51499 * from.G - 0.10001 * from.B);
}
public static ColorCMYK FromColorD(ColorD from)
{
double c = 1.0 - from.R;
double m = 1.0 - from.G;
double y = 1.0 - from.B;
double k = (double)Math.Min(c, Math.Min(m, y));
if (k == 1.0)
{
return new ColorCMYK(from.A, 0, 0, 0, 1);
}
else
{
return new ColorCMYK(from.A, (c - k) / (1 - k), (m - k) / (1 - k), (y - k) / (1 - k), k);
}
}
static PointD ColorToXY(ColorD color)
{
PointD ptR = new PointD(1.0, 0.0);
PointD ptG = new PointD(0.0, 1.0);
PointD ptB = new PointD(0.0, 0.0);
double r = color.R > 0.04045 ? Math.Pow((color.R + 0.055) / 1.055, 2.4000000953674316) : color.R / 12.92;
double g = color.G > 0.04045 ? Math.Pow((color.G + 0.055) / 1.055, 2.4000000953674316) : color.G / 12.92;
double b = color.B > 0.04045 ? Math.Pow((color.B + 0.055) / 1.055, 2.4000000953674316) : color.B / 12.92;
double x = r * 0.664511 + g * 0.154324 + b * 0.162028;
double y = r * 0.283881 + g * 0.668433 + b * 0.047685;
double z = r * 0.000088 + g * 0.0723 + b * 0.986039;
PointD xy = new PointD(x / (x + y + z), y / (x + y + z));
if (double.IsNaN(xy.X))
{
xy.X = 0.0;
}
if (double.IsNaN(xy.Y))
{
xy.Y = 0.0;
}
if (!IsInReach(xy, ptR, ptG, ptB))
{
PointD pAB = PointD.ClosestPoint(ptR, ptG, xy);
PointD pAC = PointD.ClosestPoint(ptB, ptR, xy);
PointD pBC = PointD.ClosestPoint(ptG, ptB, xy);
double dAB = PointD.Distance(xy, pAB);
double dAC = PointD.Distance(xy, pAC);
double dBC = PointD.Distance(xy, pBC);
double lowest = dAB;
PointD closestPoint = pAB;
if (dAC < lowest)
{
lowest = dAC;
closestPoint = pAC;
}
if (dBC < lowest)
{
lowest = dBC;
closestPoint = pBC;
}
xy.X = closestPoint.X;
xy.Y = closestPoint.Y;
}
return new PointD(xy.X, xy.Y);
}
public static ColorXY FromColorD(ColorD from)
{
PointD pt = ColorToXY(from);
return new ColorXY(from.A, pt.X, pt.Y);
}
public static ColorHSL FromColorD(ColorD from)
{
double h = 0, s = 0, l = 0;
double max = Math.Max(from.R, Math.Max(from.G, from.B));
double min = Math.Min(from.R, Math.Min(from.G, from.B));
if (max == min)
{
h = 0;
}
else if (max == from.R && from.G >= from.B)
{
h = 60.0 * (from.G - from.B) / (max - min);
}
else if (max == from.R && from.G < from.B)
{
h = 60.0 * (from.G - from.B) / (max - min) + 360.0;
}
else if (max == from.G)
{
h = 60.0 * (from.B - from.R) / (max - min) + 120.0;
}
else if (max == from.B)
{
h = 60.0 * (from.R - from.G) / (max - min) + 240.0;
}
l = (max + min) / 2.0;
if (l == 0 || max == min)
{
s = 0;
}
else if (0 < l && l <= 0.5)
{
s = (max - min) / (max + min);
}
else if (l > 0.5)
{
s = (max - min) / (2 - (max + min));
}
return new ColorHSL(from.A, h, s, l);
}
public static ColorHSB FromColorD(ColorD from)
{
double max = Math.Max(from.R, Math.Max(from.G, from.B));
double min = Math.Min(from.R, Math.Min(from.G, from.B));
double h = 0.0;
if (max == from.R && from.G >= from.B)
{
h = 60 * (from.G - from.B) / (max - min);
}
else if (max == from.R && from.G < from.B)
{
h = 60 * (from.G - from.B) / (max - min) + 360;
}
else if (max == from.G)
{
h = 60 * (from.B - from.R) / (max - min) + 120;
}
else if (max == from.B)
{
h = 60 * (from.R - from.G) / (max - min) + 240;
}
double s = (max == 0) ? 0.0 : (1.0 - (min / max));
return new ColorHSB(from.A, h, s, (double)max);
}
public ColorD AlphaBlend(ColorD back)
{
return new ColorD(back.A,
m_R * (m_A) + back.R * (1.0 - m_A),
m_G * (m_A) + back.G * (1.0 - m_A),
m_B * (m_A) + back.B * (1.0 - m_A));
}
public abstract void Add(ColorD c);
