The IfcBoundingBox defines an orthogonal box oriented parallel to the axes of the object coordinate system in which it is defined. It is defined by a Corner being a three-dimensional Cartesian point and three length measures defining the X, Y and Z parameters of the box in the direction of the positive axes.
As shown in Figure 220.127.116.11.A, the IfcBoundingBox is defined with its own location which can be used to place the IfcBoundingBox relative to the geometric coordinate system. The IfcBoundingBox is defined by the lower left corner (Corner) and the upper right corner (XDim, YDim, ZDim measured within the parent coordinate system).
|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.
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Location of the bottom left corner (having the minimum values).
Length attribute (measured along the edge parallel to the X Axis)
Width attribute (measured along the edge parallel to the Y Axis)
Height attribute (measured along the edge parallel to the Z Axis).
This attribute is formally derived.
The space dimensionality of this class, it is always 3.
ENTITY IfcBoundingBox SUBTYPE OF (IfcGeometricRepresentationItem); Corner : IfcCartesianPoint; XDim : IfcPositiveLengthMeasure; YDim : IfcPositiveLengthMeasure; ZDim : IfcPositiveLengthMeasure; DERIVE Dim : IfcDimensionCount := 3; END_ENTITY;