bonsai-impl-modeling

Orphaned geometry in Bonsai BIM modeling usually occurs when elements lack correct IFC typing, material assignments, representation context, or spatial containment. You must enforce required type, material, representation, and spatial placement steps to generate valid, non-orphaned elements.

To assign materials in Bonsai BIM elements, assign them to the TYPE so occurrences inherit them properly. Use IfcMaterialLayerSet for walls and slabs, IfcMaterialProfileSet for columns and beams, and IfcMaterialConstituentSet for doors and windows.

To place BIM elements into the spatial hierarchy using IfcOpenShell, use the spatial.assign_container API. This ensures elements are correctly contained within the spatial structure, preventing invalid or orphaned geometry in your IFC file.

For Bonsai BIM modeling, you should use the bonsai.* APIs rather than the older blenderbim.* APIs. Additionally, validate that IfcStore.get_file() is not None and ensure representation contexts exist before assigning geometry.

To add openings for doors and windows in IfcOpenShell, use the feature.add_feature API. Avoid known anti-patterns like using void.add_opening or aggregate.assign_object, which can lead to invalid IFC files and orphaned geometry.

Bonsai BIM element geometry requires a Body/MODEL_VIEW representation context. Ensuring this representation context exists before assigning geometry prevents invalid files and ensures your typed elements, like walls and slabs, synchronize correctly from Blender to IFC.