Module spatial_elevation 

Storey-elevation extraction, split out of spatial.rs (#3965 follow-up): reading IfcBuildingStorey.Elevation, with the ObjectPlacement Z fallback, is a self-contained concern the tree-building code merely calls into. spatial_tests.rs (attached to the parent spatial module, not this one) exercises these functions directly via use super::*.

Constants

AXIS_PLACEMENT_LOCATION_INDEX 🔒

IfcAxis2Placement3D.Location - an IfcCartesianPoint.

LOCAL_PLACEMENT_RELATIVE_INDEX 🔒

IfcLocalPlacement.RelativePlacement - the storey’s own offset from its parent spatial container.

STOREY_ELEVATION_INDEX 🔒

Attribute index of IfcBuildingStorey.Elevation, the same in IFC2X3 and IFC4:

STOREY_PLACEMENT_INDEX 🔒

Attribute index of IfcBuildingStorey.ObjectPlacement.

Functions

extract_elevation_if_storey 🔒

Extract elevation from an IFCBUILDINGSTOREY entity, in metres.

extract_placement_elevation 🔒

Resolve a storey’s Z from its ObjectPlacement, following IfcLocalPlacement -> RelativePlacement (IfcAxis2Placement3D) -> Location (IfcCartesianPoint).Coordinates[2].