||Coordination view version 2.0
||official buildingSMART certification 2.0 program
|summary||agreement to use standard shape representation type names "Axis", "FootPrint" also for IfcStairFlight and IfcRampFlight
In order to rationalize the use of representation types, IfcShapeRepresentation.RepresentationType to have it consistently as "Axis" for a line based representation, and "FootPrint" for ground floor the agreement of correct use of representation types for IfcStairFlight and IfcRampFlight is altered.
The current definition from the IFC2x3 specification for IfcShapeRepresentation for IfcStairFlight and IfcRampFlight is as following:
WalkingLine: A two-dimensional open curve, IfcBoundedCurve, defining the walking line for the stair flight.
Boundary: A two-dimensional closed curve, IfcBoundedCurve, defining the boundary of the stair flight.
The new Implementer Agreement #CV-2x3-168 introduces the renaming of the representation type names into:
IfcShapeRepresentation.RepresentationIdentifier : 'Axis'
IfcShapeRepresentation.RepresentationType : 'Curve2D', 'GeometricCurveSet'
IfcShapeRepresentation.RepresentationIdentifier : 'FootPrint'
IfcShapeRepresentation.RepresentationType : 'GeometricCurveSet'