Update and fixes

README.md

@@ -1,23 +1,46 @@
-# Batex
-Export selected objects as fbx in batch operation.
-
-### Features
-* One fbx file per selected object
-* Set the pivot point to center before exporting (useful e.g. for Unreal Engine 4 imports)
-* Set the smoothing type before exporting (e.g. for low poly objects set it to FACE)
-* Define export folder, which is stored to .blend-file
-* Open export folder with one click
-* Export armature and animations
-
-### Installing
-1. Download zip file: https://github.com/jayanam/batex/archive/master.zip
-2. Open Blender
-3. Go to edit -> preferences -> addons
-4. Click install button
-5. Select the zip file you downloaded
-6. Check the box next to "inport-Export: Batex" to enable plugin
-
-### Using
-* After installing Batex panel is added to the sidebar (below item/tool/view, right side of 3d viewport)
-* Sidebar can be shown/hidden with the 'n' key.
-* Change options and use the 'Export' button to export
+# Batex - Batch Export as FBX
+
+**Version:** 0.7.0  
+**Author:** jayanam, Rodrigo Camacho (forked from jayanam)
+
+## Description
+
+Batex is a Blender add-on that allows for batch exporting selected objects as FBX files. The add-on is particularly useful for exporting multiple objects with specific configurations like centered transforms, applied transforms, smoothing options, and more.
+
+## Features
+
+- Export multiple selected objects as FBX.
+- Option to center the transform before exporting.
+- Apply transforms like scale and rotation (Experimental).
+- Support for different smoothing options (Edge, Face, Normals Only).
+- Export rig and animations along with the objects.
+- Option to export just one material per object.
+
+## Recent Modifications
+
+### Version 0.7.0
+
+- **Added support for exporting empty objects with children:**
+  - Empty objects are now included in the export process, preserving the parent-child relationship when re-importing the FBX files.
+  - This ensures that the hierarchy is maintained, even if the parent object is an empty object.
+
+- **Improved error handling for objects without materials:**
+  - The export process now checks if an object has mesh data before attempting to access its materials, preventing errors when processing empty objects or other non-mesh types.
+
+## Installation
+
+1. Download the Batex add-on from the repository.
+2. Open Blender and go to `Edit > Preferences > Add-ons`.
+3. Click `Install` and select the downloaded file.
+4. Enable the add-on from the list.
+
+## Usage
+
+1. Open the Batex panel in the 3D view (`N` panel > `Batex`).
+2. Set the export folder, and choose your desired options like centering transforms, applying transforms, etc.
+3. Select the objects you wish to export.
+4. Click `Export` to batch export the selected objects as FBX.
+
+## License
+
+This project is licensed under the GNU General Public License v3.0. See the LICENSE file for details.

__init__.py

@@ -1,9 +1,9 @@
 bl_info = {
     "name" : "Batex",
-    "author" : "jayanam",
+    "author" : "jayanam, Rodrigo Camacho (forked from jayanam)",
     "descrtion" : "Batch export as Fbx",
     "blender" : (2, 80, 0),
-    "version" : (0, 6, 0, 0),
+    "version" : (0, 7, 0, 0),
     "location" : "Batex panel",
     "warning" : "",
     "category" : "Import-Export"
@@ -16,17 +16,17 @@
 from . bex_op import *
 from . bex_folder_op import *
 
-bpy.types.Scene.export_folder = StringProperty(name="Export folder", 
-               subtype="DIR_PATH", 
-               description="Directory to export the fbx files into")
+bpy.types.Scene.export_folder = StringProperty(name="Export folder",
+                                               subtype="DIR_PATH",
+                                               description="Directory to export the fbx files into")
 
 bpy.types.Scene.center_transform = BoolProperty(name="Center transform",
-                default=True,
-                description="Set the pivot point of the object to the center")
+                                                default=True,
+                                                description="Set the pivot point of the object to the center")
 
 bpy.types.Scene.apply_transform = BoolProperty(name="Apply transform",
-                default=True,
-                description="Applies scale and transform (Experimental)")
+                                               default=True,
+                                               description="Applies scale and transform (Experimental)")
 
 bpy.types.Scene.export_smoothing = EnumProperty(
     name="Smoothing",
@@ -35,21 +35,21 @@
         ('EDGE', 'Edge', 'Write edge smoothing',0),
         ('FACE', 'Face', 'Write face smoothing',1),
         ('OFF', 'Normals Only', 'Write normals only',2)
-        ),
+    ),
     default='OFF'
-    )
+)
 
 bpy.types.Scene.export_animations = BoolProperty(name="Export Rig & Animations",
-                default=False,
-                description="Export rig and animations")
+                                                 default=False,
+                                                 description="Export rig and animations")
 
 bpy.types.Scene.one_material_ID = BoolProperty(name="One material ID",
-                default=True,
-                description="Export just one material per object")
+                                               default=True,
+                                               description="Export just one material per object")
 
 classes = ( BATEX_PT_Panel, BATEX_OT_Operator, BATEX_OT_OpenFolder )
 
 register, unregister = bpy.utils.register_classes_factory(classes)
-    
+
 if __name__ == "__main__":
     register()

bex_export.py

@@ -29,16 +29,15 @@ def do_center(self, obj):
     return None
 
   def remove_materials(self, obj):
-    if obj.type == 'ARMATURE':
+    # Check if the object has mesh data and is not an armature
+    if obj.type != 'MESH' or obj.data is None:
       return False
 
     mat_count = len(obj.data.materials)
 
     if mat_count > 1 and self.__one_material_id:
-
       # Save material ids for faces
       bpy.ops.object.mode_set(mode='EDIT')
-
       bm = bmesh.from_edit_mesh(obj.data)
 
       for face in bm.faces:
@@ -58,6 +57,7 @@ def remove_materials(self, obj):
     else:
       return False
 
+
   def restore_materials(self, obj):
 
     # Restore the materials for the object
@@ -86,7 +86,7 @@ def do_export(self):
     bpy.ops.object.mode_set(mode='OBJECT')
 
     for obj in self.__export_objects:
-      bpy.ops.object.select_all(action='DESELECT') 
+      bpy.ops.object.select_all(action='DESELECT')
       obj.select_set(state=True)
 
       # Center selected object
@@ -96,31 +96,34 @@ def do_export(self):
       for child in get_children(obj):
         child.select_set(state=True)
 
-      # Remove materials except the last one
-      materials_removed = self.remove_materials(obj)
+      # Include empty objects in the export
+      ex_object_types = {'MESH', 'EMPTY'}
 
-      ex_object_types = { 'MESH' }
-
-      if(self.__export_animations):
+      if self.__export_animations:
         ex_object_types.add('ARMATURE')
 
-      # Export the selected object as fbx
-      bpy.ops.export_scene.fbx(check_existing=False,
-      filepath=self.__export_folder + "/" + obj.name + ".fbx",
-      filter_glob="*.fbx",
-      use_selection=True,
-      object_types=ex_object_types,
-      bake_anim=self.__export_animations,
-       bake_anim_use_all_bones=self.__export_animations,
-      bake_anim_use_all_actions=self.__export_animations,
-      use_armature_deform_only=True,
-      bake_space_transform=self.__apply_transform,
-      mesh_smooth_type=self.__context.scene.export_smoothing,
-      add_leaf_bones=False,
-      path_mode='ABSOLUTE')
+      # Remove materials except the last one
+      materials_removed = self.remove_materials(obj)
+
+      # Export the selected object and its children as fbx
+      bpy.ops.export_scene.fbx(
+        check_existing=False,
+        filepath=os.path.join(self.__export_folder, f"{obj.name}.fbx"),
+        filter_glob="*.fbx",
+        use_selection=True,
+        object_types=ex_object_types,
+        bake_anim=self.__export_animations,
+        bake_anim_use_all_bones=self.__export_animations,
+        bake_anim_use_all_actions=self.__export_animations,
+        use_armature_deform_only=True,
+        bake_space_transform=self.__apply_transform,
+        mesh_smooth_type=self.__context.scene.export_smoothing,
+        add_leaf_bones=False,
+        path_mode='ABSOLUTE'
+      )
 
       if materials_removed:
         self.restore_materials(obj)
 
       if old_pos is not None:
-        set_object_to_loc(obj, old_pos)
+        set_object_to_loc(obj, old_pos)