A planar box specifies an arbitrary rectangular box and its location in a two dimensional Cartesian coordinate system. If the planar box is used within a three-dimensional coordinate system, it defines the rectangular box within the XY plane.
NOTE Entity adapted from planar_box 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.|
|3||Placement||IfcAxis2Placement||The IfcAxis2Placement positions a local coordinate system for the definition of the rectangle. The origin of this local coordinate system serves as the lower left corner of the rectangular box.|
> NOTE In case of a 3D placement by _IfcAxisPlacement3D the IfcPlanarBox is defined within the xy plane of the definition coordinate system._
ENTITY IfcPlanarBox SUBTYPE OF (IfcPlanarExtent); Placement : IfcAxis2Placement; END_ENTITY;