8.13.3.2 IfcPlanarBox

8.13.3.2.1 Semantic definition

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.

8.13.3.2.2 Entity inheritance

8.13.3.2.3 Attributes

#	Attribute	Type	Description
IfcRepresentationItem (2)
	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.
IfcPlanarExtent (2)
1	SizeInX	IfcLengthMeasure	The extent in the direction of the x-axis.
2	SizeInY	IfcLengthMeasure	The extent in the direction of the y-axis.
Click to show 4 hidden inherited attributes Click to hide 4 inherited attributes
IfcPlanarBox (1)
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 IfcAxis2Placement3D the _IfcPlanarBox is defined within the xy plane of the definition coordinate system._

Table A

8.13.3.2.4 Formal representation

ENTITY IfcPlanarBox
SUBTYPE OF (IfcPlanarExtent);
Placement : IfcAxis2Placement;
END_ENTITY;

8.13.3.2.5 References

IfcPlanarExtent