From 04d2e4124fac440335ff42d3a05be513e1ef2333 Mon Sep 17 00:00:00 2001
From: Alessandro Ranellucci <aar@cpan.org>
Date: Mon, 4 Aug 2014 14:55:13 +0200
Subject: [PATCH] Fix numerical issue on Win32

---
 xs/src/libslic3r/Line.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xs/src/libslic3r/Line.cpp b/xs/src/libslic3r/Line.cpp
index 86efceddf6..d1b0310a04 100644
--- a/xs/src/libslic3r/Line.cpp
+++ b/xs/src/libslic3r/Line.cpp
@@ -112,7 +112,7 @@ double
 Line::direction() const
 {
     double atan2 = this->atan2_();
-    return (atan2 == PI) ? 0
+    return (fabs(atan2 - PI) < EPSILON) ? 0
         : (atan2 < 0) ? (atan2 + PI)
         : atan2;
 }