blender-scene-setup

1# Scene Setup & Hygiene
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3The execution model and verification steps are in `blender-core`.
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5## Procedure
61. Run `scripts/scene_audit.py` (add `--fix purge scale paths` only on files you own). It reports units, unapplied/negative scale, default names, objects in the scene root, missing images, orphans and far-off origins.
72. Set units: Metric, Unit Scale **1.0**, Length meters. Keep 1.0 even for Unreal/Roblox, because exporters handle the conversion (see `blender-export-pipelines`).
83. Build the collection layout (below). Every object must be in a named collection, never the scene root.
94. Name everything with the conventions below. Rename after every duplicate or join so no `.001` suffixes remain.
105. Set origins: props at the bottom-center (they sit on the ground at Z=0), characters at world origin between the feet, doors/hinges at the pivot.
116. Apply rotation and scale on meshes (Ctrl+A). Keep location unless the asset should export at the origin.
127. Re-run the audit. It's done when `issues` is empty or every remaining issue is intentional and explained.
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14## Collection layout (one asset per .blend, or one collection per asset)
15```
16ASSET_Crate
17├── Crate_high      # sculpt / subdiv source (exclude from export)
18├── Crate_low       # game mesh(es) SM_Crate, SM_Crate_LOD1..
19├── Crate_bake      # cages, bake helpers
20├── Crate_collision # UCX_SM_Crate_00 (UE) / Crate-col (Godot)
21└── Crate_ref       # reference images/blockout (hide_render)
22```
23…