glTF exporter: Armature extports all actions

When scene contains only 1 armature, it will export all actions, not only active + NLA

io_scene_gltf2/__init__.py

@@ -4,7 +4,7 @@
 bl_info = {
     'name': 'glTF 2.0 format',
     'author': 'Julien Duroure, Scurest, Norbert Nopper, Urs Hanselmann, Moritz Becher, Benjamin Schmithüsen, Jim Eckerlein, and many external contributors',
-    "version": (3, 2, 20),
+    "version": (3, 2, 21),
     'blender': (3, 1, 0),
     'location': 'File > Import-Export',
     'description': 'Import-Export as glTF 2.0',

io_scene_gltf2/blender/exp/gltf2_blender_gather_animations.py

@@ -9,6 +9,7 @@ from io_scene_gltf2.blender.exp import gltf2_blender_gather_animation_channels
 from io_scene_gltf2.io.com.gltf2_io_debug import print_console
 from ..com.gltf2_blender_extras import generate_extras
 from io_scene_gltf2.io.exp.gltf2_io_user_extensions import export_user_extensions
+from io_scene_gltf2.blender.exp.gltf2_blender_gather_tree import VExportNode
 
 
 def __gather_channels_baked(obj_uuid, export_settings):
@@ -307,6 +308,15 @@ def __get_blender_actions(blender_object: bpy.types.Object,
                         blender_tracks[strip.action.name] = track.name # Always set after possible active action -> None will be overwrite
                         action_on_type[strip.action.name] = "SHAPEKEY"
 
+    # If there are only 1 armature, include all animations, even if not in NLA
+    if blender_object.type == "ARMATURE":
+        if len(export_settings['vtree'].get_all_node_of_type(VExportNode.ARMATURE)) == 1:
+            # Keep all actions on objects (no keyframe animation)
+            # Some other object animation can be added here, and will affect armature object itself :-/
+            for act in [a for a in bpy.data.actions if a.id_root == "OBJECT"]:
+                blender_actions.append(act)
+                blender_tracks[act.name] = None
+
     export_user_extensions('gather_actions_hook', export_settings, blender_object, blender_actions, blender_tracks, action_on_type)
 
     # Remove duplicate actions.

io_scene_gltf2/blender/exp/gltf2_blender_gather_tree.py

@@ -244,6 +244,9 @@ class VExportTree:
         else:
             return []
 
+    def get_all_node_of_type(self, node_type):
+        return [n.uuid for n in self.nodes.values() if n.blender_type == node_type]
+
     def display(self, mode):
         if mode == "simple":
             for n in self.roots: