public static void ToColorSpace(IRgb color, ICmyk item)
{
var cmy = new Cmy();
cmy.Initialize(color);
var k = 1.0;
if (cmy.C < k)
k = cmy.C;
if (cmy.M < k)
k = cmy.M;
if (cmy.Y < k)
k = cmy.Y;
item.K = k;
if (k.BasicallyEqualTo(1))
{
item.C = 0;
item.M = 0;
item.Y = 0;
}
else
{
item.C = (cmy.C - k) / (1 - k);
item.M = (cmy.M - k) / (1 - k);
item.Y = (cmy.Y - k) / (1 - k);
}
}
internal static void ToColorSpace(IRgb color, ICmyk item)
{
var cmy = new Cmy();
cmy.Initialize(color);
var k = 1.0;
if (cmy.C < k)
{
k = cmy.C;
}
if (cmy.M < k)
{
k = cmy.M;
}
if (cmy.Y < k)
{
k = cmy.Y;
}
item.K = k;
if (k.BasicallyEqualTo(1))
{
item.C = 0;
item.M = 0;
item.Y = 0;
}
else
{
item.C = (cmy.C - k) / (1 - k);
item.M = (cmy.M - k) / (1 - k);
item.Y = (cmy.Y - k) / (1 - k);
}
}
public void SteelBlueCmyToHex()
{
var knownColor = new Cmy {
C = .72549, M = .49020, Y = .29412,
};
var expectedColor = new Hex("#4682B4");
ExpectedValuesForKnownColor(knownColor, expectedColor);
}
public void SteelBlueMunsellToCmy()
{
var knownColor = new Munsell("2.5PB 5/8");
var expectedColor = new Cmy {
C = .72549, M = .49020, Y = .29412,
};
ExpectedValuesForKnownColor(knownColor, expectedColor);
}
public void SteelBlueCmyToLuv()
{
var knownColor = new Cmy {
C = .72549, M = .49020, Y = .29412,
};
var expectedColor = new Luv {
L = 52.467, U = -25.107, V = -48.374,
};
ExpectedValuesForKnownColor(knownColor, expectedColor);
}
public void SteelBlueCmyToYxy()
{
var knownColor = new Cmy {
C = .72549, M = .49020, Y = .29412,
};
var expectedColor = new Yxy {
Y1 = 20.562, X = .21934, Y2 = .24058,
};
ExpectedValuesForKnownColor(knownColor, expectedColor);
}
public void SteelBlueCmyToXyz()
{
var knownColor = new Cmy {
C = .72549, M = .49020, Y = .29412,
};
var expectedColor = new Xyz {
X = 18.746, Y = 20.562, Z = 46.161,
};
ExpectedValuesForKnownColor(knownColor, expectedColor);
}
public void SteelBlueCmyToRgb()
{
var knownColor = new Cmy {
C = .72549, M = .49020, Y = .29412,
};
var expectedColor = new Rgb {
R = 70, G = 130, B = 180,
};
ExpectedValuesForKnownColor(knownColor, expectedColor);
}
public void MaroonLchToCmy()
{
var knownColor = new Lch {
L = 24.829, C = 60.093, H = 38.180,
};
var expectedColor = new Cmy {
C = .509804, M = .99986, Y = 1,
};
ExpectedValuesForKnownColor(knownColor, expectedColor);
}
public void RedLabToCmy()
{
var knownColor = new Lab {
L = 53.233, A = 80.109, B = 67.220,
};
var expectedColor = new Cmy {
C = 0.0000035, M = .99970, Y = 1,
};
ExpectedValuesForKnownColor(knownColor, expectedColor);
}
public void GoldenrodRgbToCmy()
{
var knownColor = new Rgb {
R = 218, G = 165, B = 32,
};
var expectedColor = new Cmy {
C = .14510, M = .35294, Y = .87451,
};
ExpectedValuesForKnownColor(knownColor, expectedColor);
}
public void SteelBlueCmyToCmyk()
{
var knownColor = new Cmy {
C = .72549, M = .49020, Y = .29412,
};
var expectedColor = new Cmyk {
C = .61111, M = .27778, Y = 0, K = .29412,
};
ExpectedValuesForKnownColor(knownColor, expectedColor);
}
public void AquamarineHsvToCmy()
{
var knownColor = new Hsv {
H = 160, S = .5, V = 1,
};
var expectedColor = new Cmy {
C = .50196, M = 0, Y = .16666,
};
ExpectedValuesForKnownColor(knownColor, expectedColor);
}
public void BlackRgbToCmy()
{
var knownColor = new Rgb {
R = 0, G = 0, B = 0,
};
var expectedColor = new Cmy {
C = 1, M = 1, Y = 1,
};
ExpectedValuesForKnownColor(knownColor, expectedColor);
}
public void SilverLuvToCmy()
{
var knownColor = new Luv {
L = 77.704, U = .001, V = -.013,
};
var expectedColor = new Cmy {
C = .24706, M = .24704, Y = .24706,
};
ExpectedValuesForKnownColor(knownColor, expectedColor);
}
public void RivergumXyzToCmy()
{
var knownColor = new Xyz {
X = 13.123, Y = 15.372, Z = 13.174,
};
var expectedColor = new Cmy {
C = .614, M = .55494, Y = .62627,
};
ExpectedValuesForKnownColor(knownColor, expectedColor);
}
public void WhiteRgbToCmy()
{
var knownColor = new Rgb {
R = 255, G = 255, B = 255,
};
var expectedColor = new Cmy {
C = 0, M = 0, Y = 0,
};
ExpectedValuesForKnownColor(knownColor, expectedColor);
}
public void DarkVioletCmykToCmy()
{
var knownColor = new Cmyk {
C = .29858, M = 1, Y = 0, K = .17255,
};
var expectedColor = new Cmy {
C = .41961, M = 1, Y = .17255,
};
ExpectedValuesForKnownColor(knownColor, expectedColor);
}
public void SteelBlueCmyToHsb()
{
var knownColor = new Cmy {
C = .72549, M = .49020, Y = .29412,
};
var expectedColor = new Hsb {
H = 207, S = 44, B = 49,
};
ExpectedValuesForKnownColor(knownColor, expectedColor);
}
public void AliceBlueHsbToCmy()
{
var knownColor = new Hsb {
H = 208, S = 100, B = 97,
};
var expectedColor = new Cmy {
C = .06, M = .028, Y = 0,
};
ExpectedValuesForKnownColor(knownColor, expectedColor);
}
public void SteelBlueCmyToLch()
{
var knownColor = new Cmy {
C = .72549, M = .49020, Y = .29412,
};
var expectedColor = new Lch {
L = 52.467, C = 32.454, H = 262.796,
};
ExpectedValuesForKnownColor(knownColor, expectedColor);
}
public void SteelBlueCmyToLab()
{
var knownColor = new Cmy {
C = .72549, M = .49020, Y = .29412,
};
var expectedColor = new Lab {
L = 52.467, A = -4.070, B = -32.198,
};
ExpectedValuesForKnownColor(knownColor, expectedColor);
}
public static IRgb ToColor(ICmyk item)
{
var cmy = new Cmy
{
C = (item.C * (1 - item.K) + item.K),
M = (item.M * (1 - item.K) + item.K),
Y = (item.Y * (1 - item.K) + item.K)
};
return cmy.ToRgb();
}
internal static IRgb ToColor(ICmyk item)
{
var cmy = new Cmy
{
C = (item.C * (1 - item.K) + item.K),
M = (item.M * (1 - item.K) + item.K),
Y = (item.Y * (1 - item.K) + item.K)
};
return(cmy.ToRgb());
}
protected override Rgb ToRgb()
{
var cmy = new Cmy
{
C = C * (1 - K) + K,
M = M * (1 - K) + K,
Y = Y * (1 - K) + K
};
return cmy.ToColorSpace<Rgb>();
}
protected override void FromRgb(Rgb color)
{
var cmy = new Cmy(color);
var k = 1.0;
if (cmy.C < k)
k = cmy.C;
if (cmy.M < k)
k = cmy.M;
if (cmy.Y < k)
k = cmy.Y;
K = k;
if (k.ApproximatelyEquals(1.0))
{
C = 0;
M = 0;
Y = 0;
}
else
{
C = (cmy.C - k) / (1 - k);
M = (cmy.M - k) / (1 - k);
Y = (cmy.Y - k) / (1 - k);
}
}
