From ba878238afc74df252bb4eaac7538fb656555433 Mon Sep 17 00:00:00 2001
From: Danny Robson <danny@nerdcruft.net>
Date: Fri, 20 Feb 2015 15:26:59 +1100
Subject: [PATCH] region: add vector addition operator

---
 region.cpp | 12 +++++++++++-
 region.hpp |  4 ++++
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/region.cpp b/region.cpp
index 62ad34cb..5767270d 100644
--- a/region.cpp
+++ b/region.cpp
@@ -297,7 +297,17 @@ util::region<T>::expanded (T mag) const
     return expanded (mag, mag);
 }
 
-//-----------------------------------------------------------------------------
+
+///////////////////////////////////////////////////////////////////////////////
+template <typename T>
+util::region<T>
+util::region<T>::operator+ (vector<2,T> rhs) const
+{
+    return { x + rhs.x, y + rhs.y, w, h };
+}
+
+
+///////////////////////////////////////////////////////////////////////////////
 template <typename T>
 bool
 util::region<T>::operator== (const region& rhs) const
diff --git a/region.hpp b/region.hpp
index 281d2ed5..3bf839f9 100644
--- a/region.hpp
+++ b/region.hpp
@@ -23,6 +23,7 @@
 
 #include "extent.hpp"
 #include "point.hpp"
+#include "vector.hpp"
 #include "types/traits.hpp"
 
 namespace util {
@@ -80,6 +81,9 @@ namespace util {
         region& expand (T mag);
         region& expand (T w, T h);
 
+        // arithmetic operators
+        region operator+ (vector<2,T>) const;
+
         // Logical comparison operators
         bool operator ==(const region<T>& rhs) const;
         bool operator !=(const region<T>& rhs) const