From 453ef52e9f7fc34bdda071fbc00fe14a66ca15f0 Mon Sep 17 00:00:00 2001
From: Vojtech Bubnik <bubnikv@gmail.com>
Date: Fri, 12 Nov 2021 16:25:21 +0100
Subject: [PATCH] Fix of polygon_is_convex()

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

diff --git a/src/libslic3r/Polygon.cpp b/src/libslic3r/Polygon.cpp
index 3f00b2a51c..c7bbe97066 100644
--- a/src/libslic3r/Polygon.cpp
+++ b/src/libslic3r/Polygon.cpp
@@ -345,7 +345,7 @@ bool polygon_is_convex(const Points &poly)
     for (size_t i = 0; i < poly.size(); ++ i) {
         Point p2 = poly[i];
         auto det = cross2((p1 - p0).cast<int64_t>(), (p2 - p1).cast<int64_t>());
-        if (det >= 0)
+        if (det < 0)
             return false;
         p0 = p1;
         p1 = p2;