From f9b1d7b822558660a6f2f33686ec37bcb2171b03 Mon Sep 17 00:00:00 2001
From: Justin Lin <caterpillar@openhome.cc>
Date: Wed, 17 May 2017 09:19:36 +0800
Subject: [PATCH] return origin when r is too small

---
 src/__private__/__pie_for_rounding.scad | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/__private__/__pie_for_rounding.scad b/src/__private__/__pie_for_rounding.scad
index 28b46265..5ea0f6c8 100644
--- a/src/__private__/__pie_for_rounding.scad
+++ b/src/__private__/__pie_for_rounding.scad
@@ -4,7 +4,7 @@ function __pie_for_rounding(r, begin_a, end_a, frags) =
         step_a = sector_angle / frags,
         is_integer = frags % 1 == 0
     )
-    concat([
+    r < 0.00005 ? [[0, 0]] : concat([
         for(ang = [begin_a:step_a:end_a])
             [
                 r * cos(ang),