internal static void ToColorSpace(IRgb color, ILch item)
{
var lab = color.To <Lab>();
var h = Math.Atan2(lab.B, lab.A);
// convert from radians to degrees
if (h > 0)
{
h = (h / Math.PI) * 180.0;
}
else
{
h = 360 - (Math.Abs(h) / Math.PI) * 180.0;
}
if (h < 0)
{
h += 360.0;
}
else if (h >= 360)
{
h -= 360.0;
}
item.L = lab.L;
item.C = Math.Sqrt(lab.A * lab.A + lab.B * lab.B);
item.H = h;
}
internal static void ToColorSpace(IRgb color, ILch item)
{
var lab = color.To<Lab>();
var h = Math.Atan2(lab.B, lab.A);
// convert from radians to degrees
if (h > 0)
{
h = (h / Math.PI) * 180.0;
}
else
{
h = 360 - (Math.Abs(h) / Math.PI) * 180.0;
}
if (h < 0)
{
h += 360.0;
}
else if (h >= 360)
{
h -= 360.0;
}
item.L = lab.L;
item.C = Math.Sqrt(lab.A * lab.A + lab.B * lab.B);
item.H = h;
}
protected static void ExpectedValuesForKnownColor(IColorSpace knownColor, ILch expectedColor)
{
var target = knownColor.To <Lch>();
Assert.IsTrue(CloseEnough(expectedColor.L, target.L), "(L)" + expectedColor.L + " != " + target.L);
Assert.IsTrue(CloseEnough(expectedColor.C, target.C), "(C)" + expectedColor.C + " != " + target.C);
Assert.IsTrue(CloseEnough(expectedColor.H, target.H), "(H)" + expectedColor.H + " != " + target.H);
}
protected static void ExpectedValuesForKnownColor(IColorSpace knownColor, ILch expectedColor)
{
var target = knownColor.To<Lch>();
Assert.IsTrue(CloseEnough(expectedColor.L,target.L),"(L)" + expectedColor.L + " != " + target.L);
Assert.IsTrue(CloseEnough(expectedColor.C,target.C),"(C)" + expectedColor.C + " != " + target.C);
Assert.IsTrue(CloseEnough(expectedColor.H,target.H),"(H)" + expectedColor.H + " != " + target.H);
}
protected static void ExpectedValuesForKnownColor(IColorSpace knownColor, ILch expectedColor)
{
var target = knownColor.To <Lch>();
Assert.AreEqual(expectedColor.L, target.L, 0.5, "(L)" + expectedColor.L + " != " + target.L);
Assert.AreEqual(expectedColor.C, target.C, 0.5, "(C)" + expectedColor.C + " != " + target.C);
Assert.AreEqual(expectedColor.H, target.H, 1.8, "(H)" + expectedColor.H + " != " + target.H);
}
internal static IRgb ToColor(ILch item)
{
var hRadians = item.H * Math.PI / 180.0;
var lab = new Lab
{
L = item.L,
A = Math.Cos(hRadians) * item.C,
B = Math.Sin(hRadians) * item.C
};
return lab.To<Rgb>();
}
internal static IRgb ToColor(ILch item)
{
var hRadians = item.H * Math.PI / 180.0;
var lab = new Lab
{
L = item.L,
A = Math.Cos(hRadians) * item.C,
B = Math.Sin(hRadians) * item.C
};
return(lab.To <Rgb>());
}
internal static IRgb ToColor(ILch item)
{
var hRadians = MathUtils.DegToRad(item.H);
var lab = new Lab
{
L = item.L,
A = Math.Cos(hRadians) * item.C,
B = Math.Sin(hRadians) * item.C
};
return(lab.To <Rgb>());
}
internal static void ToColorSpace(IRgb color, ILch item)
{
var lab = color.To <Lab>();
var h = MathUtils.RadToDeg(Math.Atan2(lab.B, lab.A));
if (h < 0)
{
h += 360.0;
}
else if (h >= 360)
{
h -= 360.0;
}
item.L = lab.L;
item.C = Math.Sqrt(lab.A * lab.A + lab.B * lab.B);
item.H = h;
}
// http://www.brucelindbloom.com/index.html?Eqn_Lab_to_LCH.html
// http://www.easyrgb.com/index.php?X=MATH&H=09#text9
// http://www.colourphil.co.uk/lab_lch_colour_space.html
internal static void ToColorSpace(IRgb color, ILch item)
{
var lab = color.To <Lab>();
var h = Math.Atan2(lab.B, lab.A);
// convert from radians to degrees
if (h > 0)
{
h = (h / Math.PI) * 180;
}
else
{
h = 360 - (Math.Abs(h) / Math.PI) * 180;
}
item.L = lab.L;
item.C = Math.Sqrt(Math.Pow(lab.A, 2) + Math.Pow(lab.B, 2));
item.H = h % 360;
}
// http://www.brucelindbloom.com/index.html?Eqn_Lab_to_LCH.html
// http://www.easyrgb.com/index.php?X=MATH&H=09#text9
// http://www.colourphil.co.uk/lab_lch_colour_space.html
internal static void ToColorSpace(IRgb color, ILch item)
{
var lab = color.To<Lab>();
var h = Math.Atan2(lab.B, lab.A);
// convert from radians to degrees
if (h > 0)
{
h = (h/Math.PI)*180;
}
else
{
h = 360 - (Math.Abs(h)/Math.PI)*180;
}
item.L = lab.L;
item.C = Math.Sqrt(Math.Pow(lab.A,2) + Math.Pow(lab.B,2));
item.H = h % 360;
}
public CmyColor(ILch lch)
{
Initialize(lch.ToRgb());
}
public LchColor(ILch lch)
{
Ordinals = lch.Ordinals;
}
public HunterLabColor(ILch lch)
{
Initialize(lch.ToRgb());
}
