Handle additional adjacency cases in the plan/section SVG
projection line deduplication introduced for #3742:
- Use IfcMaterialLayerSetUsage layer sequence instead of a
flat material set for material comparison. Prefix/suffix
matching allows elements whose assemblies share the same
layers at the interface (one having extra finish layers)
to be correctly merged.
- Add a unilateral bbox-edge fallback for pairs where one
element's shared boundary is implicit (not drawn as an
explicit SVG path segment). Segments from the other
element that lie on the boundary of the first element's
SVG bounding box are removed even without a bilateral
match.
Generated with the assistance of an AI coding tool.
Ryan Schultz
a818693a15