From 0394f32438a134266e75e28fd3b586e9a1dc3f92 Mon Sep 17 00:00:00 2001
From: Sarah Hoffmann <lonvia@denofr.de>
Date: Mon, 13 Aug 2018 20:52:49 +0200
Subject: [PATCH] fix large viewbox computation

Fixes #1137.
---
 lib/SearchContext.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/SearchContext.php b/lib/SearchContext.php
index c0ae9032..84159b83 100644
--- a/lib/SearchContext.php
+++ b/lib/SearchContext.php
@@ -108,8 +108,8 @@ class SearchContext
             $aViewBox[3]
         );
 
-        $fHeight = $aViewBox[0] - $aViewBox[2];
-        $fWidth = $aViewBox[1] - $aViewBox[3];
+        $fHeight = abs($aViewBox[0] - $aViewBox[2]);
+        $fWidth = abs($aViewBox[1] - $aViewBox[3]);
 
         $this->sqlViewboxLarge = sprintf(
             'ST_SetSRID(ST_MakeBox2D(ST_Point(%F,%F),ST_Point(%F,%F)),4326)',
-- 
2.43.2