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Split HSLColor out from ColorRamp.

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This commit is contained in:
Paul Chote
2013-04-25 21:21:58 +12:00
parent 7ec4bcad0e
commit 90ac642aa9
4 changed files with 119 additions and 37 deletions
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50
OpenRA.FileFormats/ColorRamp.cs
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@@ -14,59 +14,41 @@ namespace OpenRA.FileFormats
{
public struct ColorRamp
{
public byte H,S,L,R;
public readonly HSLColor Color;
public byte Ramp;
public ColorRamp(HSLColor color, byte ramp)
{
Color = color;
Ramp = ramp;
}
public ColorRamp(byte h, byte s, byte l, byte r)
{
H = h; S = s; L = l; R = r;
Color = new HSLColor(h, s, l);
Ramp = r;
}
/* returns a color along the Lum ramp */
public Color GetColor( float t )
public Color GetColor(float t)
{
return ColorFromHSL( H / 255f, S / 255f, float2.Lerp( L / 255f, L*R / (255f * 255f), t ) );
var l = float2.Lerp(Color.L, Color.L*Ramp/255f, t);
return HSLColor.RGBFromHSL(Color.H/255f, Color.S/255f, l/255f);
}
public override string ToString()
{
return "{0},{1},{2},{3}".F(H, S, L, R);
}
// hk is hue in the range [0,1] instead of [0,360]
static Color ColorFromHSL(float hk, float s, float l)
{
// Convert from HSL to RGB
var q = (l < 0.5f) ? l * (1 + s) : l + s - (l * s);
var p = 2 * l - q;
float[] trgb = { hk + 1 / 3.0f, hk, hk - 1/3.0f };
float[] rgb = { 0, 0, 0 };
for (int k = 0; k < 3; k++)
{
while (trgb[k] < 0) trgb[k] += 1.0f;
while (trgb[k] > 1) trgb[k] -= 1.0f;
}
for (int k = 0; k < 3; k++)
{
if (trgb[k] < 1 / 6.0f) { rgb[k] = (p + ((q - p) * 6 * trgb[k])); }
else if (trgb[k] >= 1 / 6.0f && trgb[k] < 0.5) { rgb[k] = q; }
else if (trgb[k] >= 0.5f && trgb[k] < 2.0f / 3) { rgb[k] = (p + ((q - p) * 6 * (2.0f / 3 - trgb[k]))); }
else { rgb[k] = p; }
}
return Color.FromArgb((int)(rgb[0] * 255), (int)(rgb[1] * 255), (int)(rgb[2] * 255));
return "{0},{1}".F(Color.ToString(), Ramp);
}
public static bool operator ==(ColorRamp me, ColorRamp other)
{
return (me.H == other.H && me.S == other.S && me.L == other.L && me.R == other.R );
return (me.Color == other.Color && me.Ramp == other.Ramp);
}
public static bool operator !=(ColorRamp me, ColorRamp other) { return !(me == other); }
public override int GetHashCode() { return H.GetHashCode() ^ S.GetHashCode() ^ L.GetHashCode() ^ R.GetHashCode(); }
public override int GetHashCode() { return Color.GetHashCode() ^ Ramp.GetHashCode(); }
public override bool Equals(object obj)
{