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Bonsai: fall back to adaptive units for unsupported SI prefixes #8074

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Project loading set scene length_unit to f"{Prefix}METERS", but Blender's
enum only defines KILOMETERS, CENTIMETERS, MILLIMETERS and MICROMETERS.
A model with a DECIMETRE (or HECTO/DECA/etc.) length unit therefore raised
on the enum assignment and the file failed to open. Guard with the set of
supported values and fall back to ADAPTIVE display for the rest.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
Petru Conduraru
2026-07-09 13:24:57 +03:00
committed by Dion Moult
parent 06da416b8f
commit 69a4be68e8
1 changed files with 6 additions and 1 deletions
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src/bonsai/bonsai/bim/import_ifc.py
+6 -1
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@@ -980,8 +980,13 @@ class IfcImporter:
if unit.Name == "METRE":
if not unit.Prefix:
bpy.context.scene.unit_settings.length_unit = "METERS"
else:
elif f"{unit.Prefix}METERS" in ("KILOMETERS", "CENTIMETERS", "MILLIMETERS", "MICROMETERS"):
bpy.context.scene.unit_settings.length_unit = f"{unit.Prefix}METERS"
else:
# Blender's length_unit enum has no entry for other
# SI prefixes (e.g. DECIMETERS), so fall back to
# adaptive display instead of failing to open.
bpy.context.scene.unit_settings.length_unit = "ADAPTIVE"
else:
bpy.context.scene.unit_settings.system = "IMPERIAL"
name = unit.Name.lower()