internal void UpdateHSL(HSLStruct @struct)
{
this.H_.Text = (Math.Round(@struct.hue, 1) * 360).ToString().Truncate(3);
var sat = Math.Round(@struct.saturation / 1, 3) * 100;
var lg = Math.Round(@struct.lightness / 1, 3) * 100;
if (sat == 100)
{
this.S_.Text = sat.ToString().Truncate(3) + "%";
}
else if (sat > 9 & sat < 100)
{
this.S_.Text = sat.ToString().Truncate(2) + "%";
return;
}
else
{
this.S_.Text = sat.ToString().Truncate(1) + "%";
return;
}
if (lg == 100)
{
this.L_.Text = lg.ToString().Truncate(3) + "%";
}
else if (lg > 9 & lg < 100)
{
this.L_.Text = lg.ToString().Truncate(2) + "%";
return;
}
else
{
this.L_.Text = lg.ToString().Truncate(1) + "%";
return;
}
}
/// <summary>
/// Convert a <see cref="HSLStruct"/> to <see cref="Helpers.RGBStruct"/>
/// </summary>
/// <param name="HSL">the <see cref="HSLStruct"/> to convert</param>
/// <returns>a <see cref="Helpers.RGBStruct"/> converted</returns>
public static Helpers.RGBStruct ToRGB(this HSLStruct HSL)
{
double h = HSL.hue;
double sl = HSL.saturation;
double l = HSL.lightness;
double v;
double r, g, b;
r = l; // default to gray
g = l;
b = l;
v = (l <= 0.5) ? (l * (1.0 + sl)) : (l + sl - l * sl);
if (v > 0)
{
double m;
double sv;
int sextant;
double fract, vsf, mid1, mid2;
m = l + l - v;
sv = (v - m) / v;
h *= 6.0;
sextant = (int)h;
fract = h - sextant;
vsf = v * sv * fract;
mid1 = m + vsf;
mid2 = v - vsf;
switch (sextant)
{
case 0:
r = v;
g = mid1;
b = m;
break;
case 1:
r = mid2;
g = v;
b = m;
break;
case 2:
r = m;
g = v;
b = mid1;
break;
case 3:
r = m;
g = mid2;
b = v;
break;
case 4:
r = mid1;
g = m;
b = v;
break;
case 5:
r = v;
g = m;
b = mid2;
break;
}
}
byte rr = Convert.ToByte(r * 255.0f);
byte gg = Convert.ToByte(g * 255.0f);
byte bb = Convert.ToByte(b * 255.0f);
return(new Helpers.RGBStruct(new Color(255, rr, gg, bb)));
}
