From 15cbc7d285acdcd478551827346ba7e9eab85c7c Mon Sep 17 00:00:00 2001
From: Florian Festi <ffesti@redhat.com>
Date: Wed, 30 Mar 2016 20:52:21 +0200
Subject: [PATCH] Fix Boxes.hole()

---
 boxes/__init__.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/boxes/__init__.py b/boxes/__init__.py
index a0f441e..a9c6bd1 100755
--- a/boxes/__init__.py
+++ b/boxes/__init__.py
@@ -631,9 +631,9 @@ class Boxes:
         :param r: radius
 
         """
-        radius -= self.burn
-        if radius < 0:
-            radius = 1E-9
+        r -= self.burn
+        if r < 0:
+            r = 1E-9
         self.moveTo(x+r, y)
         self.ctx.arc(-r, 0, r, 0, 2*math.pi)