💄 Add hue preview circle to Aura Glow preferences

src/utils.js

@@ -195,3 +195,42 @@ export function parseColor(string) {
 
   return [color.red / 255, color.green / 255, color.blue / 255, color.alpha / 255];
 }
+
+// Converts a color in hsv space into rgb.
+// https://stackoverflow.com/a/17243070
+export function hsvToRgb(h, s, v) {
+  var r, g, b, i, f, p, q, t;
+  if (arguments.length === 1) {
+    (s = h.s), (v = h.v), (h = h.h);
+  }
+  i = Math.floor(h * 6);
+  f = h * 6 - i;
+  p = v * (1 - s);
+  q = v * (1 - f * s);
+  t = v * (1 - (1 - f) * s);
+  switch (i % 6) {
+    case 0:
+      (r = v), (g = t), (b = p);
+      break;
+    case 1:
+      (r = q), (g = v), (b = p);
+      break;
+    case 2:
+      (r = p), (g = v), (b = t);
+      break;
+    case 3:
+      (r = p), (g = q), (b = v);
+      break;
+    case 4:
+      (r = t), (g = p), (b = v);
+      break;
+    case 5:
+      (r = v), (g = p), (b = q);
+      break;
+  }
+  return {
+    r,
+    g,
+    b,
+  };
+}