From cc549932c4ded5b4b645d559369444a2b579c0cc Mon Sep 17 00:00:00 2001
From: Jaime van Kessel <nallath@gmail.com>
Date: Tue, 18 Oct 2016 11:48:23 +0200
Subject: [PATCH] ConvexHull decorater no longer crashes if node has no
 MeshData

Fixes CURA-2706
---
 cura/ConvexHullDecorator.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/cura/ConvexHullDecorator.py b/cura/ConvexHullDecorator.py
index 67c655f53d..a7d0775e21 100644
--- a/cura/ConvexHullDecorator.py
+++ b/cura/ConvexHullDecorator.py
@@ -200,6 +200,8 @@ class ConvexHullDecorator(SceneNodeDecorator):
                     if len(vertex_data) >= 4:
                         convex_hull = hull.getConvexHull()
                         offset_hull = self._offsetHull(convex_hull)
+            else:
+                return Polygon([])  # Node has no mesh data, so just return an empty Polygon.
 
             # Store the result in the cache
             self._2d_convex_hull_mesh = mesh