Full Spatial Chain Resolution for Complete and High-Performance Level Classification

[fabiovettori]

Description 📝

The current implementation of classifier.byIfcBuildingStorey() only captures elements that have a direct ContainedInStructure relation.
This approach misses a significant portion of IFC elements that are connected to levels through spatial chains, such as:
• Element → IfcSpace → IfcBuildingStorey
• Element → Parent Element → IfcBuildingStorey
• Nested or indirect spatial containment paths

As a result, 30–50% of model elements remain unassigned in real-world IFC models.

Attempting to resolve these spatial chains by iterating over elements individually leads to severe performance degradation in large models (>50K elements), with extraction times extending to several minutes.

Suggested solution 💡

No response

Alternative ⛕

No response

Additional context ☝️

No response

Validations ✅

• Read the docs.
• Check that there isn't already an issue that requests the same feature to avoid creating a duplicate.

[agviegas]

Hey @fabiovettori did you know that fragments already provides a full spatial structure? Would this solve your use case? This is what we use when we want to build menus that control the whole hierarchy of the app.