8.13.3.3 IfcPlanarExtent

8.13.3.3.1 Semantic definition

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.

8.13.3.3.2 Entity inheritance

8.13.3.3.3 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.
Click to show 2 hidden inherited attributes
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.

Table 8.13.3.3.A

8.13.3.3.4 Formal representation

 ENTITY IfcPlanarExtent
 SUPERTYPE OF (ONEOF
	(IfcPlanarBox))
 SUBTYPE OF (IfcGeometricRepresentationItem);
	SizeInX : IfcLengthMeasure;
	SizeInY : IfcLengthMeasure;
END_ENTITY;