add_mesh_BoltFactory/Boltfactory.py

@@ -418,7 +418,6 @@ class add_mesh_bolt(Operator, AddObjectHelper):
                 (context.active_object.data is not None) and ('Bolt' in context.active_object.data.keys()) and \
                 (self.change == True):
                 obj = context.active_object
-                use_auto_smooth = bool(obj.data.use_auto_smooth)        # Copy value, do not take a reference
                 use_smooth = bool(obj.data.polygons[0].use_smooth)      # Copy value, do not take a reference
 
                 mesh = createMesh.Create_New_Mesh(self, context)
@@ -430,7 +429,6 @@ class add_mesh_bolt(Operator, AddObjectHelper):
                 bm.free()
 
                 # Preserve flat/smooth choice. New mesh is flat by default
-                obj.data.use_auto_smooth = use_auto_smooth
                 if use_smooth:
                     bpy.ops.object.shade_smooth()
                 else:

add_mesh_extra_objects/add_mesh_rocks/rockgen.py

@@ -150,9 +150,6 @@ def createMeshObject(context, verts, edges, faces, name):
     # Make a mesh from a list of verts/edges/faces.
     mesh.from_pydata(verts, edges, faces)
 
-    # Set mesh to use auto smoothing:
-    mesh.use_auto_smooth = True
-
     # Update mesh geometry after adding stuff.
     mesh.update()
 

io_mesh_stl/blender_utils.py

@@ -17,11 +17,12 @@ def create_and_link_mesh(name, faces, face_nors, points, global_matrix):
     mesh.from_pydata(points, [], faces)
 
     if face_nors:
-        # Note: we store 'temp' normals in loops, since validate() may alter final mesh,
-        #       we can only set custom lnors *after* calling it.
-        mesh.create_normals_split()
+        # Write imported normals to a temporary attribute so they are interpolated by #mesh.validate().
+        # It's important to validate before calling #mesh.normals_split_custom_set() which expects a
+        # valid mesh.
         lnors = tuple(chain(*chain(*zip(face_nors, face_nors, face_nors))))
-        mesh.loops.foreach_set("normal", lnors)
+        mesh.attributes.new("temp_custom_normals", 'FLOAT_VECTOR', 'CORNER')
+        mesh.attributes["temp_custom_normals"].data.foreach_set("vector", lnors)
 
     mesh.transform(global_matrix)
 
@@ -30,13 +31,12 @@ def create_and_link_mesh(name, faces, face_nors, points, global_matrix):
 
     if face_nors:
         clnors = array.array('f', [0.0] * (len(mesh.loops) * 3))
-        mesh.loops.foreach_get("normal", clnors)
+        mesh.attributes["temp_custom_normals"].data.foreach_get("vector", clnors)
 
         mesh.polygons.foreach_set("use_smooth", [True] * len(mesh.polygons))
 
         mesh.normals_split_custom_set(tuple(zip(*(iter(clnors),) * 3)))
-        mesh.use_auto_smooth = True
-        mesh.free_normals_split()
+        mesh.attributes.remove(mesh.attributes["temp_custom_normals"])
 
     mesh.update()
 

io_scene_3ds/export_3ds.py

@@ -1298,12 +1298,9 @@ def make_object_node(ob, translation, rotation, scale, name_id):
         obj_node_header_chunk.add_variable("name", _3ds_string(sane_name(name)))
         obj_node_header_chunk.add_variable("flags1", _3ds_ushort(0x0040))
 
-        """Flags2 defines 0x01 for display path, 0x02 use autosmooth, 0x04 object frozen,
+        """Flags2 defines 0x01 for display path, 0x04 object frozen,
         0x10 for motion blur, 0x20 for material morph and bit 0x40 for mesh morph."""
-        if ob.type == 'MESH' and ob.data.use_auto_smooth:
-            obj_node_header_chunk.add_variable("flags2", _3ds_ushort(0x02))
-        else:
-            obj_node_header_chunk.add_variable("flags2", _3ds_ushort(0))
+        obj_node_header_chunk.add_variable("flags2", _3ds_ushort(0))
     obj_node_header_chunk.add_variable("parent", _3ds_ushort(ROOT_OBJECT))
 
     '''
@@ -1343,12 +1340,6 @@ def make_object_node(ob, translation, rotation, scale, name_id):
         obj_boundbox.add_variable("max", _3ds_point_3d(ob.bound_box[6]))
         obj_node.add_subchunk(obj_boundbox)
 
-        # Add smooth angle if autosmooth is used
-        if ob.type == 'MESH' and ob.data.use_auto_smooth:
-            obj_morph_smooth = _3ds_chunk(OBJECT_MORPH_SMOOTH)
-            obj_morph_smooth.add_variable("angle", _3ds_float(round(ob.data.auto_smooth_angle, 6)))
-            obj_node.add_subchunk(obj_morph_smooth)
-
     # Add track chunks for position, rotation, size
     ob_scale = scale[name]  # and collect masterscale
     if parent is None or (parent.name not in name_id):

io_scene_3ds/import_3ds.py

@@ -1331,8 +1331,7 @@ def process_next_chunk(context, file, previous_chunk, imported_objects, CONSTRAI
         elif new_chunk.ID == MORPH_SMOOTH and tracking == 'OBJECT':  # Smooth angle
             smooth_angle = read_float(new_chunk)
             if child.data is not None:  # Check if child is a dummy
-                child.data.use_auto_smooth = True
-                child.data.auto_smooth_angle = smooth_angle
+                child.data.set_sharp_from_angle(smooth_angle)
 
         elif KEYFRAME and new_chunk.ID == COL_TRACK_TAG and tracking == 'AMBIENT':  # Ambient
             keyframe_data = {}

io_scene_fbx/export_fbx_bin.py

@@ -1158,7 +1158,6 @@ def fbx_data_mesh_elements(root, me_obj, scene_data, done_meshes):
         # NOTE: this is not supported by importer currently.
         # XXX Official docs says normals should use IndexToDirect,
         #     but this does not seem well supported by apps currently...
-        me.calc_normals_split()
 
         ln_bl_dtype = np.single
         ln_fbx_dtype = np.float64
@@ -1258,8 +1257,6 @@ def fbx_data_mesh_elements(root, me_obj, scene_data, done_meshes):
                     # del t_lnw
                     me.free_tangents()
 
-        me.free_normals_split()
-
     # Write VertexColor Layers.
     colors_type = scene_data.settings.colors_type
     vcolnumber = 0 if colors_type == 'NONE' else len(me.color_attributes)

io_scene_fbx/import_fbx.py

@@ -1653,8 +1653,6 @@ def blen_read_geom_layer_smooth(fbx_obj, mesh):
             1, fbx_item_size, layer_id,
             xform=np.logical_not,  # in FBX, 0 (False) is sharp, but in Blender True is sharp.
             )
-        # We only set sharp edges here, not face smoothing itself...
-        mesh.use_auto_smooth = True
         return False
     elif fbx_layer_mapping == b'ByPolygon':
         blen_data = MESH_ATTRIBUTE_SHARP_FACE.ensure(mesh.attributes).data
@@ -1737,23 +1735,23 @@ def blen_read_geom_layer_normal(fbx_obj, mesh, xform=None):
     bl_norm_dtype = np.single
     item_size = 3
     # try loops, then polygons, then vertices.
-    tries = ((mesh.loops, "Loops", False, blen_read_geom_array_mapped_polyloop),
+    tries = ((mesh.attributes["temp_custom_normals"].data, "Loops", False, blen_read_geom_array_mapped_polyloop),
              (mesh.polygons, "Polygons", True, blen_read_geom_array_mapped_polygon),
              (mesh.vertices, "Vertices", True, blen_read_geom_array_mapped_vert))
     for blen_data, blen_data_type, is_fake, func in tries:
         bdata = np.zeros((len(blen_data), item_size), dtype=bl_norm_dtype) if is_fake else blen_data
-        if func(mesh, bdata, "normal", bl_norm_dtype,
+        if func(mesh, bdata, "vector", bl_norm_dtype,
                 fbx_layer_data, fbx_layer_index, fbx_layer_mapping, fbx_layer_ref, 3, item_size, layer_id, xform, True):
             if blen_data_type == "Polygons":
                 # To expand to per-loop normals, repeat each per-polygon normal by the number of loops of each polygon.
                 poly_loop_totals = np.empty(len(mesh.polygons), dtype=np.uintc)
                 mesh.polygons.foreach_get("loop_total", poly_loop_totals)
                 loop_normals = np.repeat(bdata, poly_loop_totals, axis=0)
-                mesh.loops.foreach_set("normal", loop_normals.ravel())
+                mesh.attributes["temp_custom_normals"].data.foreach_set("normal", loop_normals.ravel())
             elif blen_data_type == "Vertices":
                 # We have to copy vnors to lnors! Far from elegant, but simple.
                 loop_vertex_indices = MESH_ATTRIBUTE_CORNER_VERT.to_ndarray(mesh.attributes)
-                mesh.loops.foreach_set("normal", bdata[loop_vertex_indices].ravel())
+                mesh.attributes["temp_custom_normals"].data.foreach_set("normal", bdata[loop_vertex_indices].ravel())
             return True
 
     blen_read_geom_array_error_mapping("normal", fbx_layer_mapping)
@@ -1877,7 +1875,7 @@ def blen_read_geom(fbx_tmpl, fbx_obj, settings):
     if settings.use_custom_normals:
         # Note: we store 'temp' normals in loops, since validate() may alter final mesh,
         #       we can only set custom lnors *after* calling it.
-        mesh.create_normals_split()
+        mesh.attributes.new("temp_custom_normals", 'FLOAT_VECTOR', 'CORNER')
         if geom_mat_no is None:
             ok_normals = blen_read_geom_layer_normal(fbx_obj, mesh)
         else:
@@ -1889,7 +1887,7 @@ def blen_read_geom(fbx_tmpl, fbx_obj, settings):
     if ok_normals:
         bl_nors_dtype = np.single
         clnors = np.empty(len(mesh.loops) * 3, dtype=bl_nors_dtype)
-        mesh.loops.foreach_get("normal", clnors)
+        mesh.attributes["temp_custom_normals"].data.foreach_get("vector", clnors)
 
         if not ok_smooth:
             sharp_face = MESH_ATTRIBUTE_SHARP_FACE.get(attributes)
@@ -1900,10 +1898,8 @@ def blen_read_geom(fbx_tmpl, fbx_obj, settings):
         # Iterating clnors into a nested tuple first is faster than passing clnors.reshape(-1, 3) directly into
         # normals_split_custom_set. We use clnors.data since it is a memoryview, which is faster to iterate than clnors.
         mesh.normals_split_custom_set(tuple(zip(*(iter(clnors.data),) * 3)))
-        mesh.use_auto_smooth = True
-
     if settings.use_custom_normals:
-        mesh.free_normals_split()
+        mesh.attributes.remove(mesh.attributes["temp_custom_normals"])
 
     if not ok_smooth:
         sharp_face = MESH_ATTRIBUTE_SHARP_FACE.get(attributes)

io_scene_gltf2/blender/exp/gltf2_blender_gather_primitives_extract.py

@@ -64,8 +64,6 @@ class PrimitiveCreator:
             self.blender_object = self.export_settings['vtree'].nodes[self.uuid_for_skined_data].blender_object
 
         self.use_normals = self.export_settings['gltf_normals']
-        if self.use_normals:
-            self.blender_mesh.calc_normals_split()
 
         self.use_tangents = False
         if self.use_normals and self.export_settings['gltf_tangents']:
@@ -776,7 +774,6 @@ class PrimitiveCreator:
             self.normals = np.array(self.normals, dtype=np.float32)
         else:
             self.normals = np.empty(len(self.blender_mesh.loops) * 3, dtype=np.float32)
-            self.blender_mesh.calc_normals_split()
             self.blender_mesh.loops.foreach_get('normal', self.normals)
 
         self.normals = self.normals.reshape(len(self.blender_mesh.loops), 3)

io_scene_gltf2/blender/imp/gltf2_blender_mesh.py

@@ -61,10 +61,9 @@ def do_primitives(gltf, mesh_idx, skin_idx, mesh, ob):
 
     # Use a class here, to be able to pass data by reference to hook (to be able to change them inside hook)
     class IMPORT_mesh_options:
-        def __init__(self, skinning: bool = True, skin_into_bind_pose: bool = True, use_auto_smooth: bool = True):
+        def __init__(self, skinning: bool = True, skin_into_bind_pose: bool = True):
             self.skinning = skinning
             self.skin_into_bind_pose = skin_into_bind_pose
-            self.use_auto_smooth = use_auto_smooth
 
     mesh_options = IMPORT_mesh_options()
     import_user_extensions('gather_import_mesh_options', gltf, mesh_options, pymesh, skin_idx)
@@ -479,9 +478,7 @@ def do_primitives(gltf, mesh_idx, skin_idx, mesh, ob):
     mesh.update(calc_edges_loose=has_loose_edges)
 
     if has_normals:
-        mesh.create_normals_split()
         mesh.normals_split_custom_set_from_vertices(vert_normals)
-        mesh.use_auto_smooth = mesh_options.use_auto_smooth
 
 
 def points_edges_tris(mode, indices):

io_scene_x3d/export_x3d.py

@@ -819,10 +819,6 @@ def export(file,
 
                         # --- Write IndexedFaceSet Attributes (same as IndexedTriangleSet)
                         fw('solid="%s"\n' % bool_as_str(material and material.use_backface_culling))
-                        if is_smooth:
-                            # use Auto-Smooth angle, if enabled. Otherwise make
-                            # the mesh perfectly smooth by creaseAngle > pi.
-                            fw(ident_step + 'creaseAngle="%.4f"\n' % (mesh.auto_smooth_angle if mesh.use_auto_smooth else 4.0))
 
                         if use_normals:
                             # currently not optional, could be made so:

io_scene_x3d/import_x3d.py

@@ -3013,8 +3013,7 @@ def importShape_ProcessObject(
         # solid=false, we don't support it yet.
         creaseAngle = geom.getFieldAsFloat('creaseAngle', None, ancestry)
         if creaseAngle is not None:
-            bpydata.auto_smooth_angle = creaseAngle
-            bpydata.use_auto_smooth = True
+            bpydata.set_sharp_from_angle(creaseAngle)
         else:
             bpydata.polygons.foreach_set("use_smooth", [False] * len(bpydata.polygons))
 

materials_utils/functions.py

@@ -677,8 +677,7 @@ def mu_set_auto_smooth(self, angle, affect, set_smooth_shading):
 
                 #bpy.ops.object.shade_smooth()
 
-            object.data.use_auto_smooth = 1
-            object.data.auto_smooth_angle = angle  # 35 degrees as radians
+            object.data.set_sharp_from_angle(angle)  # 35 degrees as radians
 
             objects_affected += 1
 

materials_utils/menus.py

@@ -171,13 +171,6 @@ class VIEW3D_MT_materialutilities_specials(bpy.types.Menu):
                         text = "Join by material",
                         icon = "OBJECT_DATAMODE")
 
-        layout.separator()
-
-        op = layout.operator(MATERIAL_OT_materialutilities_auto_smooth_angle.bl_idname,
-                        text = "Set Auto Smooth",
-                        icon = "SHADING_SOLID")
-        op.affect = mu_prefs.set_smooth_affect
-        op.angle = mu_prefs.auto_smooth_angle
 
 class VIEW3D_MT_materialutilities_main(bpy.types.Menu):
     """Main menu for Material Utilities"""

materials_utils/preferences.py

@@ -68,20 +68,6 @@ class VIEW3D_MT_materialutilities_preferences(AddonPreferences):
             default = 0
             )
 
-    set_smooth_affect: EnumProperty(
-            name = "Set Auto Smooth Affect",
-            description = "Which objects to affect",
-            items = mu_affect_enums,
-            default = 'SELECTED'
-            )
-    auto_smooth_angle: FloatProperty(
-            name = "Auto Smooth Angle",
-            description = "Maximum angle between face normals that will be considered as smooth",
-            subtype = 'ANGLE',
-            min = 0,
-            max = radians(180),
-            default = radians(35)
-            )
 
     def draw(self, context):
         layout = self.layout
@@ -105,11 +91,6 @@ class VIEW3D_MT_materialutilities_preferences(AddonPreferences):
         c.row().prop(self, "link_to", expand = False)
         c.row().prop(self, "link_to_affect", expand = False)
 
-        d = box.box()
-        d.label(text = "Set Auto Smooth")
-        d.row().prop(self, "auto_smooth_angle", expand = False)
-        d.row().prop(self, "set_smooth_affect", expand = False)
-
         box = layout.box()
         box.label(text = "Miscellaneous")
 

mesh_tissue/tessellate_numpy.py

@@ -802,7 +802,6 @@ def tessellate_patch(props):
             n2 = n2[masked_faces][:,None,:]
         else:
             if normals_mode == 'CUSTOM':
-                me0.calc_normals_split()
                 normals_split = [0]*len(me0.loops)*3
                 vertex_indexes = [0]*len(me0.loops)
                 me0.loops.foreach_get('normal', normals_split)

object_carver/carver_utils.py

@@ -338,8 +338,7 @@ def CreateBevel(context, CurrentObject):
 
         bpy.ops.object.shade_smooth()
 
-        context.object.data.use_auto_smooth = True
-        context.object.data.auto_smooth_angle = 1.0471975
+        context.object.data.set_sharp_from_angle(1.0471975)
 
         # Restore the active object
         context.view_layer.objects.active = SavActive

render_povray/model_gui.py

@@ -108,12 +108,6 @@ class PovDataButtonsPanel(properties_data_mesh.MeshButtonsPanel):
 # We cannot inherit from RNA classes (like e.g. properties_data_mesh.DATA_PT_vertex_groups).
 # Complex py/bpy/rna interactions (with metaclass and all) simply do not allow it to work.
 # So we simply have to explicitly copy here the interesting bits. ;)
-class DATA_PT_POV_normals(PovDataButtonsPanel, Panel):
-    bl_label = properties_data_mesh.DATA_PT_normals.bl_label
-
-    draw = properties_data_mesh.DATA_PT_normals.draw
-
-
 class DATA_PT_POV_texture_space(PovDataButtonsPanel, Panel):
     bl_label = properties_data_mesh.DATA_PT_texture_space.bl_label
     bl_options = properties_data_mesh.DATA_PT_texture_space.bl_options
@@ -1066,7 +1060,6 @@ class VIEW_WT_POV_blobcube_add(WorkSpaceTool):
 classes = (
     # ObjectButtonsPanel,
     # PovDataButtonsPanel,
-    DATA_PT_POV_normals,
     DATA_PT_POV_texture_space,
     DATA_PT_POV_vertex_groups,
     DATA_PT_POV_shape_keys,

render_povray/model_primitives.py

@@ -180,7 +180,6 @@ def pov_cylinder_define(context, op, ob, radius, loc, loc_cap):
         ob.name = ob.data.name = "PovCylinder"
         ob.pov.cylinder_radius = radius
         ob.pov.cylinder_location_cap = vec
-        ob.data.use_auto_smooth = True
         ob.pov.object_as = "CYLINDER"
         ob.update_tag() # as prop set via python not updated in depsgraph
 
@@ -326,7 +325,6 @@ def pov_sphere_define(context, op, ob, loc):
         bpy.ops.object.mode_set(mode="EDIT")
         bpy.ops.mesh.hide(unselected=False)
         bpy.ops.object.mode_set(mode="OBJECT")
-        ob.data.use_auto_smooth = True
         bpy.ops.object.shade_smooth()
         ob.pov.object_as = "SPHERE"
         ob.update_tag() # as prop set via python not updated in depsgraph
@@ -471,7 +469,6 @@ def pov_cone_define(context, op, ob):
         ob.pov.cone_height = height
         ob.pov.cone_base_z = zb
         ob.pov.cone_cap_z = zc
-        ob.data.use_auto_smooth = True
         bpy.ops.object.shade_smooth()
         ob.pov.object_as = "CONE"
         ob.update_tag() # as prop set via python not updated in depsgraph
@@ -659,9 +656,7 @@ def pov_torus_define(context, op, ob):
         bpy.ops.object.mode_set(mode="EDIT")
         bpy.ops.mesh.hide(unselected=False)
         bpy.ops.object.mode_set(mode="OBJECT")
-        ob.data.use_auto_smooth = True
-        ob.data.auto_smooth_angle = 0.6
-        bpy.ops.object.shade_smooth()
+        ob.data.set_sharp_from_angle(0.6)
         ob.pov.object_as = "TORUS"
         ob.update_tag() # as prop set via python not updated in depsgraph
 

render_povray/model_primitives_topology.py

@@ -171,8 +171,7 @@ def pov_superellipsoid_define(context, op, ob):
         bpy.ops.object.mode_set(mode="EDIT")
         bpy.ops.mesh.hide(unselected=False)
         bpy.ops.object.mode_set(mode="OBJECT")
-        ob.data.auto_smooth_angle = 1.3
-        bpy.ops.object.shade_smooth()
+        ob.data.set_sharp_from_angle(1.3)
         ob.pov.object_as = "SUPERELLIPSOID"
         ob.update_tag() # as prop set via python not updated in depsgraph
 
@@ -1051,8 +1050,7 @@ def pov_parametric_define(context, op, ob):
         bpy.ops.object.mode_set(mode="EDIT")
         bpy.ops.mesh.hide(unselected=False)
         bpy.ops.object.mode_set(mode="OBJECT")
-        ob.data.auto_smooth_angle = 0.6
-        bpy.ops.object.shade_smooth()
+        ob.data.set_sharp_from_angle(0.6)
         ob.pov.object_as = "PARAMETRIC"
         ob.update_tag() # as prop set via python not updated in depsgraph
         return{'FINISHED'}
@@ -1180,8 +1178,6 @@ class POV_OT_polygon_to_circle_add(Operator):
         bpy.ops.object.mode_set(mode="EDIT")
         bpy.ops.mesh.hide(unselected=False)
         bpy.ops.object.mode_set(mode="OBJECT")
-        #ob.data.auto_smooth_angle = 0.1
-        #bpy.ops.object.shade_smooth()
         ob.pov.object_as = "POLYCIRCLE"
         ob.update_tag() # as prop set via python not updated in depsgraph
         return {"FINISHED"}

space_view3d_spacebar_menu/edit_mesh.py

@@ -180,21 +180,6 @@ class VIEW3D_OT_selecteditVertsEdgesFaces(Operator):
             return {'FINISHED'}
 
 
-# ********** Normals / Auto Smooth Menu **********
-# Thanks to marvin.k.breuer for the Autosmooth part of the menu
-
-def menu_func(self, context):
-    layout = self.layout
-    obj = context.object
-    obj_data = context.active_object.data
-    layout.separator()
-    layout.prop(obj_data, "use_auto_smooth", text="Normals: Auto Smooth")
-
-    # Auto Smooth Angle - two tab spaces to align it with the rest of the menu
-    layout.prop(obj_data, "auto_smooth_angle",
-                text="       Auto Smooth Angle")
-
-
 # List The Classes #
 
 classes = (
@@ -215,7 +200,6 @@ def register():
     for cls in classes:
         bpy.utils.register_class(cls)
 
-    bpy.types.VIEW3D_MT_edit_mesh_normals.append(menu_func)
 
 # Unregister Classes & Hotkeys #
 def unregister():
@@ -223,7 +207,6 @@ def unregister():
     for cls in reversed(classes):
         bpy.utils.unregister_class(cls)
 
-    bpy.types.VIEW3D_MT_edit_mesh_normals.remove(menu_func)
 
 if __name__ == "__main__":
     register()