fix: relocate cannot work on missing layer

fix: import fail if label are all zero
fix: add cutter name to node
fix: cannot append node lib file on NAS (UNC path)
fix: join component cause disappear
feat: smooth label
feat: better topo on cutout by range

bioxelnodes/bioxelutils/node.py

@@ -1,13 +1,13 @@
 from pathlib import Path
 import bpy
 
-from .common import get_file_prop, get_node_lib_path, set_file_prop
-from ..exceptions import Incompatible, NoFound
+from .common import get_file_prop, set_file_prop
+from ..exceptions import NoFound
 
 from ..constants import LATEST_NODE_LIB_PATH, VERSIONS
 
 
-def get_node_group(node_type: str, use_link=True):
+def get_node_tree(node_type: str, use_link=True):
     # unannotate below for local debug in node lib file.
     # node_group = bpy.data.node_groups[node_type]
     # return node_group
@@ -19,36 +19,37 @@ def get_node_group(node_type: str, use_link=True):
     if get_file_prop("node_version") is None:
         set_file_prop("node_version", addon_version)
 
-    local_lib_path = None
+    local_lib = None
     for node_group in bpy.data.node_groups:
         if node_group.name.startswith("BioxelNodes"):
             lib = node_group.library
             if lib:
                 lib_path = Path(bpy.path.abspath(lib.filepath)).resolve()
                 if lib_path != addon_lib_path:
-                    local_lib_path = lib_path
+                    local_lib = lib.filepath
                     break
 
     # local lib first
-    lib_path = local_lib_path or addon_lib_path
-    bpy.ops.wm.append('EXEC_DEFAULT',
-                      directory=f"{lib_path.as_posix()}/NodeTree",
-                      filename=node_type,
-                      link=use_link,
-                      use_recursive=True,
-                      do_reuse_local_id=True)
-    node_group = bpy.data.node_groups.get(node_type)
+    lib_path_str = local_lib or str(addon_lib_path)
 
-    if node_group is None:
+    with bpy.data.libraries.load(lib_path_str,
+                                 link=use_link,
+                                 relative=True) as (data_from, data_to):
+        data_to.node_groups = [n for n in data_from.node_groups
+                               if n == node_type]
+
+    node_tree = data_to.node_groups[0]
+
+    if node_tree is None:
         raise NoFound('No custom node found')
 
-    return node_group
+    return node_tree
 
 
-def assign_node_group(node, node_type: str):
-    node.node_tree = bpy.data.node_groups[node_type]
+def assign_node_tree(node, node_tree):
+    node.node_tree = node_tree
     node.width = 200.0
-    node.name = node_type
+    node.name = node_tree.name
     return node
 
 
@@ -61,9 +62,9 @@ def add_node_to_graph(node_name: str, node_group, node_label=None, use_link=True
         if node.select:
             node.select = False
 
-    get_node_group(node_type, use_link)
+    node_tree = get_node_tree(node_type, use_link)
     node = node_group.nodes.new("GeometryNodeGroup")
-    assign_node_group(node, node_type)
+    assign_node_tree(node, node_tree)
 
     node.label = node_label
     node.show_options = False