| IfcBSplineCurve, IfcCompositeCurve, IfcIndexedPolyCurve, IfcPolyline, IfcTrimmedCurve |
| Entité | Attributs |
|---|---|
| IfcRepresentationItem | LayerAssignment, StyledByItem |
| IfcCurve | Dim |
| Entité | Liste d'attributs |
|---|---|
| IfcArbitraryOpenProfileDef | Curve |
| IfcPolygonalBoundedHalfSpace | PolygonalBoundary |