Label rendering a bit better

src/dawn/util/Math.hpp

@@ -105,7 +105,7 @@ namespace Dawn {
        * @return Rounded number.
        */
       template<typename T>
-      static T round(float_t n) {
+      static T round(const float_t n) {
         return (T)roundf(n);
       }
 
@@ -115,8 +115,41 @@ namespace Dawn {
        * @return Rounded number.
        */
       template<typename T>
-      static T floor(float_t n) {
+      static T floor(const float_t n) {
         return (T)floorf(n);
       }
+
+      /**
+       * Get the square root of a number.
+       * 
+       * @param n Number to get the square root of.
+       * @return float_t 
+       */
+      static float_t sqrt(const float_t n) {
+        return sqrtf(n);
+      }
+
+      template<typename T>
+      static T ceil(const float_t n) {
+        return (T)ceilf(n);
+      }
+
+      /**
+       * Returns the next power of two for the given number.
+       * 
+       * @param n Number to get the next power of two for.
+       * @return The next power of two.
+       */
+      template<typename T>
+      static T nextPowerOfTwo(T n) {
+        n--;
+        n |= n >> 1;
+        n |= n >> 2;
+        n |= n >> 4;
+        n |= n >> 8;
+        n |= n >> 16;
+        n++;
+        return n;
+      }
   };
 }