feat: Implement depth cutout symmetry and associated functionalities

- Introduced a new proposal for depth cutout symmetry, allowing for the reuse of depth replacement and geometry operations.
- Added requirements for maintaining default thickness values for cutout nodes and ensuring proper initialization during object creation.
- Enhanced symmetry node to handle existing geometry, including alignment, mirroring, and boundary filling.
- Implemented fill smoothing to control the geometry of generated walls while preserving original surfaces.
- Created tests to validate the functionality of the new symmetry features against baseline geometry.
- Updated existing assets and node groups to support the new symmetry capabilities without introducing additional dependencies.

src/anyimage/operators/cutout_tool/object.py

@@ -90,7 +90,7 @@ def create_shape_object(
 ):
     import numpy as np
 
-    normal_mode = NormalMode(normal_mode)
+    normal_mode = NormalMode.OBJECT if shape in DEPTH_CUTOUT_SHAPES else NormalMode(normal_mode)
     bounds = crop_plane_bounds(
         source_object,
         content_bounds,
@@ -180,7 +180,7 @@ def create_shape_object(
             crop_center,
         )
         mesh_object["anyimage_mesh_shape"] = shape
-        node_group = load_cutout_node_group(shape)
+        node_group = load_cutout_node_group("DEPTH_SOLID" if shape == "DEPTH_SYMMETRY" else shape)
         modifier = mesh_object.modifiers.new(name=node_group.name, type="NODES")
         modifier.node_group = node_group
         modifier.show_group_selector = False
@@ -188,18 +188,26 @@ def create_shape_object(
             ("Cleanup Threshold", cleanup_value),
             (
                 "Thickness",
-                0.0 if shape == "FLAT" else 1.0,
+                0.0 if shape in {"FLAT", "DEPTH_SYMMETRY"} else 1.0,
             ),
         ):
+            if name == "Thickness" and shape == "DEPTH_SYMMETRY":
+                continue
             set_modifier_input(
                 modifier,
                 modifier_input_identifier(
                     node_group, name,
-                    subtype="NONE" if name == "Thickness" and shape == "DEPTH_SOLID" else None,
+                    subtype="NONE" if name == "Thickness" and shape in DEPTH_CUTOUT_SHAPES else None,
                 ),
                 value,
             )
-        if gesture == "POLYLINE" and shape != "DEPTH_SYMMETRY":
+        if shape == "DEPTH_SOLID":
+            set_modifier_input(
+                modifier,
+                modifier_input_identifier(node_group, "Thickness", subtype="DISTANCE"),
+                0.2,
+            )
+        if gesture == "POLYLINE":
             set_modifier_input(
                 modifier,
                 modifier_input_identifier(node_group, "Mode"),
@@ -224,9 +232,13 @@ def create_shape_object(
                     value,
                 )
         if shape == "DEPTH_SYMMETRY":
+            symmetry_group = load_cutout_node_group("DEPTH_SYMMETRY")
+            symmetry = mesh_object.modifiers.new(name=symmetry_group.name, type="NODES")
+            symmetry.node_group = symmetry_group
+            symmetry.show_group_selector = False
             set_modifier_input(
-                modifier,
-                modifier_input_identifier(node_group, "Depth Direction"),
+                symmetry,
+                modifier_input_identifier(symmetry_group, "Symmetry Direction"),
                 depth_direction,
             )
         return finalize_object_result(

src/anyimage/operators/cutout_tool/operators.py

@@ -72,10 +72,8 @@ _HIDDEN = {"HIDDEN", "SKIP_SAVE"}
 
 
 def normal_mode_for_shape(shape, generate_normal):
-    if shape == "DEPTH_SOLID":
+    if shape in DEPTH_CUTOUT_SHAPES:
         return NormalMode.OBJECT
-    if shape == "DEPTH_SYMMETRY":
-        return NormalMode.TANGENT
     if not generate_normal:
         return NormalMode.NONE
     return NormalMode.TANGENT

src/anyimage/operators/cutout_tool/shape.py

@@ -11,7 +11,7 @@ CUTOUT_Z_TO_X = (
 CUTOUT_NODE_GROUP_NAMES = {
     "FLAT": "O Image Cutout",
     "SOLID": "O Image Cutout",
-    "DEPTH_SYMMETRY": "O Image Depth Symmetry",
+    "DEPTH_SYMMETRY": "O Image Cutout Symmetry",
     "DEPTH_SOLID": "O Image Depth Cutout",
 }
 CUTOUT_SHAPE_LABELS = {