IfcGeometricRepresentationContext.Precision is typed as a plain IfcReal
but is interpreted in the project length unit, so the IfcLengthMeasure
traversal in convert_file_length_units never touched it. A model
converted from mm to m kept a Precision of e.g. 0.01 (fine in mm, huge
in m), which breaks downstream geometry interpretation such as
IfcConvert boolean cleanup.
Subcontexts derive Precision from their parent, so only root contexts
are scaled.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Centralises the millimetre-to-metre conversion shortcut that
add_door_representation and add_window_representation each defined
locally. Subsequent commits in this PR switch both call sites to
import this from util.unit, removing the duplicate definitions.
Generated with the assistance of an AI coding tool.
Petru Conduraru