add remove zero weight vertex groups to panel

core/common.py

@@ -495,8 +495,9 @@ def fix_zero_length_bones(armature: Object) -> None:
             bone.length = 0.001
     bpy.ops.object.mode_set(mode='OBJECT')
 
-def remove_unused_vertex_groups(mesh: Object) -> None:
+def remove_unused_vertex_groups(mesh: Object) -> int:
     """Remove vertex groups with no weights"""
+    removed: int = 0
     for vg in mesh.vertex_groups:
         has_weights: bool = False
         for vert in mesh.data.vertices:
@@ -508,6 +509,9 @@ def remove_unused_vertex_groups(mesh: Object) -> None:
                 break
         if not has_weights:
             mesh.vertex_groups.remove(vg)
+            removed = removed+1
+
+    return removed
 
 def calculate_bone_orientation(mesh: Object, vertices: List[Any]) -> Tuple[Vector, float]:
     """Calculate optimal bone orientation based on mesh geometry"""

functions/tools/bone_tools.py

@@ -272,10 +272,11 @@ class AvatarToolKit_OT_RemoveZeroWeightVertexGroups(Operator):
 
     def execute(self, context: Context) -> set[str]:
         meshes: list[bpy.types.Object] = get_all_meshes(context)
-        
+        removed: int = 0
         for mesh_obj in meshes:
-            remove_unused_vertex_groups(mesh_obj)
+            removed = removed+remove_unused_vertex_groups(mesh_obj)
 
+        self.report({'INFO'}, t("Tools.vertex_groups_removed", count=removed))
         return {'FINISHED'}
 
 

resources/translations/en_US.json

@@ -191,6 +191,8 @@
     "Tools.merge_twist_bones_desc": "When checked, twist bones will be kept, even if there are zero-weight",
     "Tools.clean_weights": "Remove Zero Weight Bones",
     "Tools.clean_weights_desc": "Remove bones with no vertex weights",
+    "Tools.clean_vertex_groups": "Remove Unused Vertex Groups",
+    "Tools.clean_vertex_groups_desc": "Remove vertex groups on meshes assigned to no vertices.",
     "Tools.preserve_parent_bones": "Preserve Parent Bones",
     "Tools.preserve_parent_bones_desc": "Keep bones that have children even if they have no weights",
     "Tools.target_bone_type": "Target Bone Type",
@@ -204,6 +206,7 @@
     "Tools.remove_selected_bones": "Remove Selected Bones",
     "Tools.remove_selected_bones_desc": "Remove selected zero weight bones from armature",
     "Tools.bones_removed": "Removed {count} bones",
+    "Tools.vertex_groups_removed": "Removed {count} vertex groups.",
     "Tools.clean_constraints": "Delete Bone Constraints",
     "Tools.clean_constraints_desc": "Remove all bone constraints from armature",
     "Tools.clean_constraints_success": "Removed {count} bone constraints",

ui/tools_panel.py

@@ -93,6 +93,8 @@ class AvatarToolKit_PT_ToolsPanel(Panel):
         row = col.row(align=True)
         row.operator(AvatarToolKit_OT_RemoveZeroWeightBones.bl_idname, text=t("Tools.clean_weights"), icon='GROUP_BONE')
         row.operator(AvatarToolKit_OT_DeleteBoneConstraints.bl_idname, text=t("Tools.clean_constraints"), icon='CONSTRAINT_BONE')
+        row = col.row(align=True)
+        row.operator(AvatarToolKit_OT_RemoveZeroWeightVertexGroups.bl_idname, text=t("Tools.clean_vertex_groups"), icon='CONSTRAINT_BONE')
         
         # Merge Tools
         merge_box: UILayout = layout.box()