IFC 4.3.0.0 (IFC4X3) final

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.
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.
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.
Table 8.13.3.2.A

8.13.3.2.4 Formal representation 

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

8.13.3.2.5 References