lib/mittsu/extras/image_utils.rb in mittsu-0.3.2 vs lib/mittsu/extras/image_utils.rb in mittsu-0.3.3

@@ -74,10 +74,10 @@
       def subtract(a, b)
         [a[0] - b[0], a[1] - b[1], a[2] - b[2]]
       end
 
       def normalize(a)
-        l = Math.sqrt(a[0] * a[0] + a[1] * a[1] + a[2] * a[2])
+        l = ::Math.sqrt(a[0] * a[0] + a[1] * a[1] + a[2] * a[2])
         [a[0] / l, a[1] / l, a[2] / l]
       end
     end
   end
 end