Add a Blender GLB intake inspection command
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zwitschi committed 2026-11-03 10:08:45 +01:00
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@@ -143,9 +143,51 @@ flatpak run org.blender.Blender --background --python "$PWD/tools/blender_assets
flatpak run org.blender.Blender --background --python "$PWD/tools/blender_assets.py" -- render
python3 tools/blender_assets.py sheet # docs/blender_previews/sheet_*.jpg
python3 tools/blender_assets.py audit # no Blender needed
python3 tools/blender_assets.py fit # gear-vs-body fit report
godot --headless --path . --import
```
### Intake inspection (`inspect`)
`audit` reads accessor-local bounds and ignores node transforms, so it is the right
release gate but a poor first look at a downloaded or newly authored GLB. `inspect`
imports the file into Blender, clears parents and applies object transforms, then
reports what the scene actually contains:
```bash
# one asset, a batch, or an external download; repeat --file as needed
flatpak run org.blender.Blender --background \
--python "$PWD/tools/blender_assets.py" -- inspect \
--file "$PWD/assets/models/blender/npc/npc_casual.glb" \
--file "$PWD/tmp/downloads/SomeCharacter.glb"
# machine-readable, for intake scripts
... -- inspect --file "$PWD/tmp/x.glb" --json
# force a contract family instead of inferring it from the path
... -- inspect --file "$PWD/tmp/x.glb" --category npc
```
It prints triangles (with the category budget), raw and seam-split vertex counts,
Godot-space bounds with height/feet for characters, whether transforms had to be
applied, mesh nodes and armatures, bone names, materials, UV layers, skinning and
animation count. Hard contract failures (`issues`) fail the command; advisory
findings (`warnings`) do not. The category is inferred from the path:
`blender/npc` → `npc`, `blender/npc_gear` → `npc_gear`, `blender/props` and
`generated` → `props`, anything else → `external` (measured but with no project
budget or rig contract).
Caveats:
- The glTF importer adds a bone-display mesh (`Icosphere`, used as
`pose_bone.custom_shape`). `inspect` excludes custom-shape helpers so they never
pollute bounds or the unskinned list.
- Bounds and bone rests are converted from Blender Z-up to Godot Y-up (`x, z, -y`),
matching the contract bands and the audit's coordinate space.
- Numbers are Blender-side measurements. They agree with `audit` on project assets
(same triangle and glTF vertex counts), but `audit` stays the single final gate:
it is stdlib-only, runs in CI, and matches what the engine imports.
- `inspect` never writes or adapts the file; scale/grounding/weld/retarget work is the
separate (not yet built) `adapt` step.
## Local map development (planned)
The **Local map development** track in [`TODO.md`](../TODO.md#local-map-development)
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@@ -48,6 +48,9 @@ python3 tools/blender_assets.py sheet # -> docs/blender_previews/sheet_<catego
python3 tools/blender_assets.py audit # stdlib only; exit 1 on any issue
python3 tools/blender_assets.py fit # head/clothing fit + bag-body clearance, per character
python3 tools/blender_assets.py list
# import a GLB, apply node transforms, report geometry/bones/UVs/skinning + contract failures
flatpak run org.blender.Blender --background \
--python "$PWD/tools/blender_assets.py" -- inspect --file "$PWD/tmp/downloads/x.glb"
godot --headless --path . --import # after any rebuild
```