source/pie_object_display.py

@@ -2,7 +2,8 @@
 #
 # SPDX-License-Identifier: GPL-3.0-or-later
 
-from bpy.types import Menu
+import bpy
+from bpy.types import Menu, Operator
 from .hotkeys import register_hotkey
 
 
@@ -70,10 +71,38 @@ class OBJECT_MT_set_object_shading(Menu):
         if context.active_object.type == 'MESH':
             layout.operator('object.shade_auto_smooth', icon='MODIFIER')
 
+        layout.separator()
+        layout.operator('OBJECT_OT_reset_normals', icon='LOOP_BACK')
+
+
+class OBJECT_OT_reset_normals(Operator):
+    """Reset mesh normals by clearing custom split normals if any, recalculating mesh normals, and setting all faces to smooth shading"""
+
+    bl_idname = "object.reset_normals"
+    bl_label = "Reset Normals"
+    bl_options = {'REGISTER', 'UNDO'}
+
+    def execute(self, context):
+        for obj in context.selected_objects:
+            if obj.type != 'MESH':
+                continue
+            with context.temp_override(active_object=obj, object=obj):
+                bpy.ops.mesh.customdata_custom_splitnormals_clear()
+            obj.data.shade_smooth()
+
+        bpy.ops.object.mode_set(mode='EDIT')
+        bpy.ops.mesh.reveal()
+        bpy.ops.mesh.select_all(action='SELECT')
+        bpy.ops.mesh.normals_make_consistent()
+        bpy.ops.object.mode_set(mode='OBJECT')
+
+        return {'FINISHED'}
+
 
 registry = [
     PIE_MT_object_display,
     OBJECT_MT_set_object_shading,
+    OBJECT_OT_reset_normals,
 ]