fix strange unfinished coding bug

util/Vector.h

@@ -163,8 +163,8 @@ class Vector
         {
             return Vector(
                     m_array[0] / scale,
-                    m_array[0] / scale,
-                    m_array[0] / scale);
+                    m_array[1] / scale,
+                    m_array[2] / scale);
         }
 
         Vector & operator+=(const Vector & v2)