Refactor geometry generation to standardize Blender object coordinates

- Unified the canonical local frame for generated geometries (Plane, Depth Plane, Relief Plane, Cutout, Depth Cutout) to align with Blender's object coordinate system, setting X as horizontal, Z as up, and +Y as depth.
- Removed the `Depth Axis` parameter from `O Image Cutout` and `O Image Depth Cutout`, simplifying the geometry generation process.
- Updated the depth direction defaults to use +Y instead of -Z for `O Image Relief Plane` and Depth Symmetry.
- Adjusted the geometry nodes to ensure thickness, projection, and shell displacements operate along the Y-axis.
- Implemented new capabilities for handling object space normals to align with the new canonical frame.
- Enhanced the Depth Symmetry functionality to mirror across the canonical Y-axis and perform a final rotation to maintain the correct orientation.
- Added tests to validate the new coordinate system and ensure compatibility with existing assets.

tools/nodes/check.py

@@ -42,14 +42,14 @@ def check_asset_library(asset_path):
             continue
         mesh = bpy.data.meshes.new("Asset Check Plane")
         mesh.from_pydata(
-            [(x / 3 - 0.5, y / 3 - 0.5, 0) for y in range(4) for x in range(4)], [],
+            [(x / 3 - 0.5, 0, y / 3 - 0.5) for y in range(4) for x in range(4)], [],
             [(y * 4 + x, y * 4 + x + 1, (y + 1) * 4 + x + 1, (y + 1) * 4 + x)
              for y in range(3) for x in range(3)],
         )
         uv = mesh.uv_layers.new(name="UVMap")
         for loop in mesh.loops:
             position = mesh.vertices[loop.vertex_index].co
-            uv.data[loop.index].uv = (position.x + 0.5, position.y + 0.5)
+            uv.data[loop.index].uv = (position.x + 0.5, position.z + 0.5)
         profile = mesh.attributes.new("o_balloon", "FLOAT", "POINT")
         for value in profile.data:
             value.value = 0.2