From c0dcba6cb0ddaea71aaa4645b09522c8deb89ac3 Mon Sep 17 00:00:00 2001
From: Nobody Really <notactualowl@fakepmail.ie>
Date: Wed, 17 Aug 2016 12:18:55 +0200
Subject: [PATCH] Fixed empty nodes issue

---
 io_scene_dae/export_dae.py | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/io_scene_dae/export_dae.py b/io_scene_dae/export_dae.py
index d201639..a3825ce 100644
--- a/io_scene_dae/export_dae.py
+++ b/io_scene_dae/export_dae.py
@@ -159,6 +159,13 @@ class DaeExporter:
         line = "{}{}".format(indent * "\t", text)
         self.sections[section].append(line)
 
+    def purge_empty_nodes(self):
+        sections = {}
+        for k, v in self.sections.items():
+            if not (len(v) == 2 and v[0][1:] == v[1][2:]):
+                sections[k] = v
+        self.sections = sections
+
     def export_image(self, image):
         img_id = self.image_cache.get(image)
         if img_id:
@@ -1706,7 +1713,7 @@ class DaeExporter:
                     for bone in node.data.bones:
                         if((bone.name.startswith("ctrl") and self.config["use_exclude_ctrl_bones"])):
                             continue
-                            
+
                         bone_name = self.skeleton_info[node]["bone_ids"][bone]
 
                         if (not (bone_name in xform_cache)):
@@ -1876,6 +1883,8 @@ class DaeExporter:
         self.writel(S_MATS, 0, '</library_materials>')
         self.writel(S_FX, 0, '</library_effects>')
 
+        self.purge_empty_nodes()
+
         if (self.config["use_anim"]):
             self.export_animations()