From 9743ba2790f641e8e71fd549bcf320e5cee02993 Mon Sep 17 00:00:00 2001
From: Justin Lin <caterpillar@openhome.cc>
Date: Fri, 12 May 2017 15:21:45 +0800
Subject: [PATCH] refactored

---
 src/__private__/__nearest_multiple_of_4.scad | 2 +-
 src/rounded_square.scad                      | 8 ++------
 2 files changed, 3 insertions(+), 7 deletions(-)

diff --git a/src/__private__/__nearest_multiple_of_4.scad b/src/__private__/__nearest_multiple_of_4.scad
index a9ca9724..bb9b2af7 100644
--- a/src/__private__/__nearest_multiple_of_4.scad
+++ b/src/__private__/__nearest_multiple_of_4.scad
@@ -1,4 +1,4 @@
-function __multiple_of_4(n) =
+function __nearest_multiple_of_4(n) =
     let(
         remain = n % 4
     )
diff --git a/src/rounded_square.scad b/src/rounded_square.scad
index 618ea658..b938b63b 100644
--- a/src/rounded_square.scad
+++ b/src/rounded_square.scad
@@ -13,14 +13,10 @@
 
 include <__private__/__is_vector.scad>;
 include <__private__/__frags.scad>;
+include <__private__/__nearest_multiple_of_4.scad>;
 
 module rounded_square(size, corner_r, center = false) {
-    frags = __frags(corner_r);
-
-    remain = frags % 4;
-    corner_frags = (remain / 4) > 0.5 ? frags - remain + 4 : frags - remain;
-
-    step_a = 360 / corner_frags;
+    step_a = 360 / __nearest_multiple_of_4(__frags(corner_r));
  
     is_vt = __is_vector(size);
     x = is_vt ? size[0] : size;