From f3c95a42d4fe85fa4b64b7ea561f8c7ba2dc91a8 Mon Sep 17 00:00:00 2001
From: jaseg <git@jaseg.de>
Date: Sun, 8 Mar 2026 13:23:29 +0100
Subject: [PATCH] Fix bug in rs274x Region close

Fixes gitlab issue #18
---
 src/gerbonara/graphic_objects.py |  2 +-
 tests/test_primitives.py         | 16 ++++++++++++++++
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/src/gerbonara/graphic_objects.py b/src/gerbonara/graphic_objects.py
index 308fc79..056e8cf 100644
--- a/src/gerbonara/graphic_objects.py
+++ b/src/gerbonara/graphic_objects.py
@@ -323,7 +323,7 @@ class Region(GraphicObject):
 
     def close(self):
         if self.outline and self.outline[-1] != self.outline[0]:
-            self.outline.append(self.outline[-1])
+            self.outline.append(self.outline[0])
             if self.arc_centers:
                 self.arc_centers.append((None, (None, None)))
 
diff --git a/tests/test_primitives.py b/tests/test_primitives.py
index c1a9c21..020acab 100644
--- a/tests/test_primitives.py
+++ b/tests/test_primitives.py
@@ -194,3 +194,19 @@ def test_region_arc_segments(start_angle_deg, sweep_angle_deg, tmpfile, img_supp
         region.arc_centers.append(None)
 
         gbr.objects.append(region)
+
+def test_region_close():
+    """ Regression test for gitlab issue #18 """
+
+    go_region = Region([
+                (0, 0),
+                (100, 0),
+                (100, 100),
+                (0, 100),
+                # (0, 0),  # expected
+                ],
+            None,
+            polarity_dark=False,
+            unit=MM)
+    assert go_region.outline[-1] == go_region.outline[0]
+