Implement arrangement framework for node groups

- Introduced `frames.py` to manage field complex calculations and their arrangement within node groups.
- Added functionality to create and remove field frames based on node arrangements.
- Developed `passages.py` to find unobstructed paths for connections around calculation frames.
- Implemented `references.py` to route shared results on peripheral tracks, ensuring efficient distribution of outputs.
- Created `sections.py` to reserve space for field calculations adjacent to geometry consumers.
- Added `sources.py` to position shared calculation sources effectively beside their distribution channels.
- Enhanced outline smoothing with `outline_smoothing.py` to adapt camera depth along original outlines.

tests/tools/nodes/test_image_depth_panorama.py

@@ -11,7 +11,7 @@ from tools.nodes.groups.image_depth_panorama import build_image_depth_panorama_g
 from tests.support.nodes import validate_node_structure
 
 
-def panorama(depth=3, alpha=1, subdivide=3, reference=3):
+def panorama(depth=3, alpha=1, subdivide=3):
     bpy.ops.wm.read_factory_settings(use_empty=True)
     group = build_image_depth_panorama_group()
     assert group.name == "O Image Depth Panorama"
@@ -34,7 +34,7 @@ def panorama(depth=3, alpha=1, subdivide=3, reference=3):
         obj.update_tag(refresh={"DATA"})
         bpy.context.view_layer.update()
 
-    for name, value in (("Depth Image", image), ("Subdivide", subdivide), ("Reference Distance", reference)):
+    for name, value in (("Depth Image", image), ("Subdivide", subdivide)):
         set_value(name, value)
     set_value("Boundary Smooth", 0)
     return obj, set_value
@@ -190,7 +190,7 @@ def test_split_strength_and_distance_scale_invariance():
     depth[:, 64:] = 7
     signatures = []
     for scale in (0.01, 1, 100):
-        obj, set_value = panorama(depth * scale, reference=3 * scale)
+        obj, set_value = panorama(depth * scale)
         counts = []
         for split in (0, 0.1, 0.5, 1):
             set_value("Split Threshold", split)