public static HSL ToHSL(Color c1)
{
double themin, themax, delta;
HSL c2 = new HSL();
themin = Math.Min(c1.R, Math.Min(c1.G, c1.B));
themax = Math.Max(c1.R, Math.Max(c1.G, c1.B));
delta = themax - themin;
c2.L = (themin + themax) / 2;
c2.S = 0;
if (c2.L > 0 && c2.L < 1)
c2.S = delta / (c2.L < 0.5 ? (2 * c2.L) : (2 - 2 *
c2.L));
c2.H = 0;
if (delta > 0)
{
if (themax == c1.R && themax != c1.G)
c2.H += (c1.G - c1.B) / delta;
if (themax == c1.G && themax != c1.B)
c2.H += (2 + (c1.B - c1.R) / delta);
if (themax == c1.B && themax != c1.R)
c2.H += (4 + (c1.R - c1.G) / delta);
c2.H *= 60;
}
return (c2);
}
private void LoadHeightMap(Texture2D heightMap)
{
height = heightMap.Height;
width = heightMap.Width;
Color[] heightMapColorInfo = new Color[width * height];
heightMap.GetData(heightMapColorInfo);
heightData = new HSL[width, height];
for (int x = 0; x < width; x++)
{
for (int y = 0; y < height; y++)
{
heightData[x, y] = RGB2HSL.ToHSL(heightMapColorInfo[x + y * width]);
}
}
}
