diff --git a/region.cpp b/region.cpp
index 5ecae38c..362fc05c 100644
--- a/region.cpp
+++ b/region.cpp
@@ -85,13 +85,25 @@ util::region<T>::diameter (void) const
 
 //-----------------------------------------------------------------------------
 template <typename T>
-util::extent<typename util::region<T>::size_type>
+typename util::region<T>::extent_t
 util::region<T>::magnitude (void) const
 {
     return { w, h };
 }
 
 
+//-----------------------------------------------------------------------------
+template <typename T>
+typename util::region<T>::extent_t
+util::region<T>::magnitude (extent_t e)
+{
+    w = e.w;
+    h = e.h;
+
+    return magnitude ();
+}
+
+
 //-----------------------------------------------------------------------------
 template <typename T>
 void
diff --git a/region.hpp b/region.hpp
index 3815d796..a7d37933 100644
--- a/region.hpp
+++ b/region.hpp
@@ -39,6 +39,9 @@ namespace util {
         static constexpr size_t elements = dimension * 2;
         using value_type = T;
 
+        using extent_t = util::extent<size_type>;
+        using point_t  = util::point<2,T>;
+
         position_type x, y;
         size_type w, h;
 
@@ -50,7 +53,8 @@ namespace util {
 
         size_type area     (void) const;
         size_type diameter (void) const;
-        util::extent<size_type>  magnitude (void) const;
+        extent_t magnitude (void) const;
+        extent_t magnitude (extent_t);
 
         void scale (T factor);