first commit

_ext/scripts/utilities/hslToRgb.js

@@ -0,0 +1,32 @@
+function hslToRgb(h, s, l){
+    h /= 255;
+    s /= 255;
+    l /= 255;
+    
+    var r, g, b;
+
+    if(s == 0){
+        r = g = b = l; // achromatic
+    }else{
+        var hue2rgb = function hue2rgb(p, q, t){
+            if(t < 0) t += 1;
+            if(t > 1) t -= 1;
+            if(t < 1/6) return p + (q - p) * 6 * t;
+            if(t < 1/2) return q;
+            if(t < 2/3) return p + (q - p) * (2/3 - t) * 6;
+            return p;
+        }
+
+        var q = l < 0.5 ? l * (1 + s) : l + s - l * s;
+        var p = 2 * l - q;
+        r = hue2rgb(p, q, h + 1/3);
+        g = hue2rgb(p, q, h);
+        b = hue2rgb(p, q, h - 1/3);
+    }
+
+    return {
+      r:Math.round(r * 255), 
+      g:Math.round(g * 255), 
+      b:Math.round(b * 255)
+    };
+}