The planar extent defines the extent along the two axes of the two-dimensional coordinate system, independently of its position. If the planar extent is used within a three-dimensional coordinate system, it defines the extent along the x and y axes.
NOTE Entity adapted from planar_extent defined in ISO10303-46
HISTORY New entity in IFC2x2.
|LayerAssignment||SET [0:1] OF IfcPresentationLayerAssignment FOR AssignedItems||Assignment of the representation item to a single or multiple layer(s). The LayerAssignments can override a LayerAssignments of the IfcRepresentation it is used within the list of Items.|
> IFC2x3 CHANGE The inverse attribute LayerAssignments has been added.
> IFC4 CHANGE The inverse attribute LayerAssignment has been restricted to max 1. Upward compatibility for file based exchange is guaranteed.
|StyledByItem||SET [0:1] OF IfcStyledItem FOR Item||Reference to the IfcStyledItem that provides presentation information to the representation, e.g. a curve style, including colour and thickness to a geometric curve.|
> IFC2x3 CHANGE The inverse attribute StyledByItem has been added.
|1||SizeInX||IfcLengthMeasure||The extent in the direction of the x-axis.|
|2||SizeInY||IfcLengthMeasure||The extent in the direction of the y-axis.|
ENTITY IfcPlanarExtent SUPERTYPE OF (ONEOF (IfcPlanarBox)) SUBTYPE OF (IfcGeometricRepresentationItem); SizeInX : IfcLengthMeasure; SizeInY : IfcLengthMeasure; END_ENTITY;