1 files changed, 53 insertions, 0 deletions
diff --git a/scripts/gui-common/color.js b/scripts/gui-common/color.js
index 90eac14..0b25f68 100644
--- a/scripts/gui-common/color.js
+++ b/scripts/gui-common/color.js
@@ -52,8 +52,61 @@ class Color
     {
         return new Color(r / 255, g / 255, b / 255, a);
     }
+
+    static d(h)
+    {
+        let d = Math.floor((h - (h % PI_THIRDS)) / PI_THIRDS);
+        return (DIVS.length - 1 + d) % (DIVS.length - 1);
+    }
+
+    static from_hsv(h, s, v)
+    {
+        h = (((h % TWO_PI)) + TWO_PI) % TWO_PI;
+
+        let d = Color.d(h);
+        
+        h = (h % PI_THIRDS) / PI_THIRDS;
+
+        let out = DIVS[d].interpolate(DIVS[d + 1], h);
+        out = WHITE.interpolate(out, s);
+        
+        return BLACK.interpolate(out, v);
+    }
+
+    static from_hsl(h, s, l)
+    {
+        h = (((h % TWO_PI)) + TWO_PI) % TWO_PI;
+        
+        let d = Color.d(h);
+        
+        h = (h % PI_THIRDS) / PI_THIRDS;
+
+        let out = DIVS[d].interpolate(DIVS[d + 1], h);
+        let L = BLACK.interpolate(WHITE, l);
+        
+        if (l < 0.5)
+            out = BLACK.interpolate(out, l / 0.5);
+        else
+            out = out.interpolate(WHITE, (l - 0.5) / 0.5);
+        
+        return L.interpolate(out, s);
+    }
 }
 
+const RED = new Color(1, 0, 0, 1);
+const YELLOW = new Color(1, 1, 0, 1);
+const GREEN = new Color(0, 1, 0, 1);
+const CYAN = new Color(0, 1, 1, 1);
+const BLUE = new Color(0, 0, 1, 1);
+const MAGENTA = new Color(1, 0, 1, 1);
+const WHITE = new Color(1, 1, 1, 1);
+const BLACK = new Color(0, 0, 0, 1);
+
+const PI_THIRDS = Math.PI / 3;
+const TWO_PI = Math.PI * 2;
+
+const DIVS = [RED, YELLOW, GREEN, CYAN, BLUE, MAGENTA, RED];
+
 /**
  * Interpolate between two colors
  * @param {Color} a