+ plugins project

1 files changed, 85 insertions, 0 deletions

diff --git a/Plugins/MonoGame.Extended/source/MonoGame.Extended/ColorExtensions.cs b/Plugins/MonoGame.Extended/source/MonoGame.Extended/ColorExtensions.cs
new file mode 100644
index 0000000..452ad37
--- /dev/null
+++ b/Plugins/MonoGame.Extended/source/MonoGame.Extended/ColorExtensions.cs
@@ -0,0 +1,85 @@
+using System;
+using System.Globalization;
+using Microsoft.Xna.Framework;
+
+namespace MonoGame.Extended
+{
+    /// <summary>
+    /// Provides additional methods for working with color
+    /// </summary>
+    public static class ColorExtensions
+    {
+        public static Color FromHex(string value)
+        {
+            var r = int.Parse(value.Substring(1, 2), NumberStyles.HexNumber);
+            var g = int.Parse(value.Substring(3, 2), NumberStyles.HexNumber);
+            var b = int.Parse(value.Substring(5, 2), NumberStyles.HexNumber);
+            var a = value.Length > 7 ? int.Parse(value.Substring(7, 2), NumberStyles.HexNumber) : 255;
+            return new Color(r, g, b, a);
+        }
+
+        public static Color ToRgb(this HslColor c)
+        {
+            var h = c.H;
+            var s = c.S;
+            var l = c.L;
+
+            if (s == 0f)
+                return new Color(l, l, l);
+
+            h = h/360f;
+            var max = l < 0.5f ? l*(1 + s) : l + s - l*s;
+            var min = 2f*l - max;
+
+            return new Color(
+                ComponentFromHue(min, max, h + 1f/3f),
+                ComponentFromHue(min, max, h),
+                ComponentFromHue(min, max, h - 1f/3f));
+        }
+
+        private static float ComponentFromHue(float m1, float m2, float h)
+        {
+            h = (h + 1f)%1f;
+            if (h*6f < 1)
+                return m1 + (m2 - m1)*6f*h;
+            if (h*2 < 1)
+                return m2;
+            if (h*3 < 2)
+                return m1 + (m2 - m1)*(2f/3f - h)*6f;
+            return m1;
+        }
+
+        public static HslColor ToHsl(this Color c)
+        {
+            var r = c.R/255f;
+            var b = c.B/255f;
+            var g = c.G/255f;
+
+            var max = Math.Max(Math.Max(r, g), b);
+            var min = Math.Min(Math.Min(r, g), b);
+            var chroma = max - min;
+            var sum = max + min;
+
+            var l = sum*0.5f;
+
+            if (chroma == 0)
+                return new HslColor(0f, 0f, l);
+
+            float h;
+
+            if (r == max)
+                h = (60*(g - b)/chroma + 360)%360;
+            else
+            {
+                if (g == max)
+                    h = 60*(b - r)/chroma + 120f;
+                else
+                    h = 60*(r - g)/chroma + 240f;
+            }
+
+            var s = l <= 0.5f ? chroma/sum : chroma/(2f - sum);
+
+            return new HslColor(h, s, l);
+        }
+	}
+}