/// <summary>
/// Interpolates between 2 colors and returns a Color struct
/// </summary>
/// <param name="c1">The bottom value on the spectrum</param>
/// <param name="c2">The top value on the spectrum</param>
/// <param name="val">The place along the spectrum, value between 0.0f and 1.0f, with 0.0f being c1, and 1.0f being c2</param>
/// <returns>Color struct which is along the hue spectrum according to val</returns>
public static Color Interpolate(Color c1, Color c2, float val)
{
// The conversion to HSV makes the interpolation smoother
HSVColor color1 = new HSVColor(c1.R, c1.G, c1.B);
HSVColor color2 = new HSVColor(c2.R, c2.G, c2.B);
float h;
float d = color2.H - color1.H;
// Depending on where the 2 colors are on the spectrum we may have to swap them
float h1, h2;
if (color1.H > color2.H)
{
h2 = color1.H;
h1 = color2.H;
d = -d;
val = 1 - val;
}
else
{
h1 = color1.H;
h2 = color2.H;
}
if (d > 0.5f)
{
h1 = h1 + 1;
h = (h1 + val * (h2 - h1)) % 1;
}
else
{
h = h1 + val * d;
}
float s = color1.S + val * (color2.S - color1.S);
float v = color1.V + val * (color2.V - color1.V);
var finalColor = new HSVColor(h, s, v);
return(finalColor.GetColor((int)((c2.A - c1.A) * val + c1.A)));
}