[Math] Added MathHelper.Clamp

Source/OpenTK/Math/MathHelper.cs

@@ -288,6 +288,46 @@ public static void Swap(ref float a, ref float b)
 
         #endregion
 
+        #region Clamp
+
+        /// <summary>
+        /// Clamps a number between a minimum and a maximum.
+        /// </summary>
+        /// <param name="n">The number to clamp.</param>
+        /// <param name="min">The minimum allowed value.</param>
+        /// <param name="max">The maximum allowed value.</param>
+        /// <returns>min, if n is lower than min; max, if n is higher than max; n otherwise.</returns>
+        public static int Clamp(int n, int min, int max)
+        {
+            return Math.Max(Math.Min(n, max), min);
+        }
+
+        /// <summary>
+        /// Clamps a number between a minimum and a maximum.
+        /// </summary>
+        /// <param name="n">The number to clamp.</param>
+        /// <param name="min">The minimum allowed value.</param>
+        /// <param name="max">The maximum allowed value.</param>
+        /// <returns>min, if n is lower than min; max, if n is higher than max; n otherwise.</returns>
+        public static float Clamp(float n, float min, float max)
+        {
+            return Math.Max(Math.Min(n, max), min);
+        }
+
+        /// <summary>
+        /// Clamps a number between a minimum and a maximum.
+        /// </summary>
+        /// <param name="n">The number to clamp.</param>
+        /// <param name="min">The minimum allowed value.</param>
+        /// <param name="max">The maximum allowed value.</param>
+        /// <returns>min, if n is lower than min; max, if n is higher than max; n otherwise.</returns>
+        public static double Clamp(double n, double min, double max)
+        {
+            return Math.Max(Math.Min(n, max), min);
+        }
+
+        #endregion
+
         #endregion
     }
 }