From 8383b7e2edeb8a2a4501a2c53d97a0f791f1a71c Mon Sep 17 00:00:00 2001
From: Danny Robson <danny@nerdcruft.net>
Date: Tue, 17 Feb 2015 16:24:49 +1100
Subject: [PATCH] region: offset max region's base

stops signed types from only covering negative coordinate regions
---
 region.cpp | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/region.cpp b/region.cpp
index 86778a63..893786ff 100644
--- a/region.cpp
+++ b/region.cpp
@@ -326,12 +326,18 @@ namespace util {
 
 
 ///----------------------------------------------------------------------------
-/// The largest specifiable finite region. Specifically does not allow infinities.
+/// The largest specifiable finite region.
+///
+/// Starts at half the minimum value to allow the width to cover some positive
+/// range rather than just cancelling out the lowest value for signed types.
+///
+/// Specifically does not allow infinities. Use/define INFINITE when required.
+
 template <typename T>
 const util::region<T>
 util::region<T>::MAX (
-    std::numeric_limits<T>::lowest (),
-    std::numeric_limits<T>::lowest (),
+    std::numeric_limits<T>::lowest () / 2,
+    std::numeric_limits<T>::lowest () / 2,
     std::numeric_limits<T>::max (),
     std::numeric_limits<T>::max ()
 );