||extended coordination view
||23. May 2007
||ISG meeting Helsinki
|summary||agreement on providing a presentation layer for doors and windows based on parametric description|
Since the change from using the Pset_Draughting to using the IfcPresentationLayerAssignment - see also #CV-2x3-109 - standard, and parametrically defined, IfcDoor and IfcWindow instances cannot hold the presentation layer information (as IfcPresentationLayerAssignment is assigned to IfcShapeRepresentation, and not to IfcElement (and subtypes).
To overcome the situation, each instance of IfcDoor and IfcWindow, that only have parametric representation, should also include an 'Profile' shape representation, as agreed in #CV-2x3-103. The 'Profile' shape representation would then be included in the set of AssignedItems of IfcPresentationLayerAssignment.