From 00c6b1bdf8b11e405f8597a985f39ffb3e6af53d Mon Sep 17 00:00:00 2001
From: Alessandro Ranellucci <aar@cpan.org>
Date: Thu, 7 Jun 2012 12:21:33 +0200
Subject: [PATCH] Bugfix: some thin walls still gave a fatal error. #416

---
 lib/Slic3r/ExtrusionLoop.pm | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/lib/Slic3r/ExtrusionLoop.pm b/lib/Slic3r/ExtrusionLoop.pm
index da5be898..a90725b0 100644
--- a/lib/Slic3r/ExtrusionLoop.pm
+++ b/lib/Slic3r/ExtrusionLoop.pm
@@ -53,4 +53,18 @@ sub split_at_first_point {
     return $self->split_at($self->polygon->[0]);
 }
 
+# although a loop doesn't have endpoints, this method is provided to allow
+# ExtrusionLoop objects to be added to an ExtrusionPath::Collection and
+# sorted by the ->shortest_path() method
+sub endpoints {
+    my $self = shift;
+    return ($self->polygon->[0], $self->polygon->[-1]);
+}
+
+# provided for ExtrusionPath::Collection->shortest_path()
+sub points {
+    my $self = shift;
+    return $self->polygon;
+}
+
 1;