Files
gig-line/Tools/ue_scale_test_import.py
T
zwitschi 1c6b956435 bootstrap: finish project bootstrap — scale test, MPFB character, build docs
- Static-mesh scale test passes: 1 m = 100.00 cm, origin preserved, axis
  mapping east→+X / north→−Y / up→+Z (named presets ue_metric_v1 both sides).
- MPFB 2.0.18 acceptance passes: generated human + standard 137-bone rig
  with weights + v2 skin baked to 1024² diffuse; imports as SkeletalMesh
  with Skeleton, Material, and Texture2D in /Game/Test/Character.
- MPFB headless requires XDG_CONFIG_HOME at the Flatpak config tree;
  documented in Art/blender/README.md, probe in Tools/addon_compat_probe.py.
- Docs/build.md completed: fresh-checkout build, packaging, headless checks.
- Docs/setup.md reconciled with reality; ROADMAP/bootstrap closed out.
2026-11-07 09:29:11 +01:00

61 lines
2.0 KiB
Python

# Unreal-side half of the scale test: imports the Blender scale-test FBX with
# the named import preset "ue_metric_v1" and measures the result.
#
# Run headless:
# <engine>/Engine/Binaries/Linux/UnrealEditor-Cmd <uproject> -run=pythonscript \
# -script=<repo>/Tools/ue_scale_test_import.py -nullrhi -unattended -nopause -stdout
import unreal
FBX = "/tmp/gigline/scaletest.fbx"
DEST = "/Game/Test/ScaleTest"
def import_fbx():
task = unreal.AssetImportTask()
task.filename = FBX
task.destination_path = DEST
task.automated = True
task.save = True
task.replace_existing = True
ui = unreal.FbxImportUI()
ui.import_mesh = True
ui.import_materials = True
ui.import_textures = False
ui.import_as_skeletal = False
smd = ui.static_mesh_import_data
smd.import_uniform_scale = 1.0
smd.combine_meshes = False
smd.convert_scene_unit = False
smd.force_front_x_axis = False
smd.normal_import_method = unreal.FBXNormalImportMethod.FBXNIM_IMPORT_NORMALS
task.options = ui
unreal.AssetToolsHelpers.get_asset_tools().import_asset_tasks([task])
unreal.EditorLoadingAndSavingUtils.save_dirty_packages(True, True)
def measure():
# Named import preset "ue_metric_v1" measures in Unreal centimetres.
lines = ["---- measured local-space bounds (cm) ----"]
for name in ("ScaleTest_A", "ScaleTest_B", "ScaleTest_C"):
path = f"{DEST}/{name}"
asset = unreal.EditorAssetLibrary.load_asset(path)
if asset is None:
lines.append(f"MISSING asset {path}")
continue
box = asset.get_bounding_box()
mn, mx = box.min, box.max
lines.append(
f"{name}: origin=({(mn.x + mx.x) / 2:.2f}, {(mn.y + mx.y) / 2:.2f}, {(mn.z + mx.z) / 2:.2f}) "
f"size=({mx.x - mn.x:.2f}, {mx.y - mn.y:.2f}, {mx.z - mn.z:.2f})"
)
lines.append(f"assets: {unreal.EditorAssetLibrary.list_assets(DEST)}")
with open("/tmp/ue-scale-test-result.txt", "w") as f:
f.write("\n".join(lines))
import_fbx()
measure()