ABSTRACT This definition may not be instantiated
An IfcPlacement is an abstract supertype of placement subtypes that define the location of an item, or an entire shape representation, and provide its orientation. All placement subtypes define right-handed Cartesian coordinate systems and do not allow mirroring.
|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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The geometric position of a reference point, such as the center of a circle, of the item to be located.
This attribute is formally derived.
The space dimensionality of this class, derived from the dimensionality of the location.
ENTITY IfcPlacement ABSTRACT SUPERTYPE OF (ONEOF (IfcAxis1Placement ,IfcAxis2Placement2D ,IfcAxis2Placement3D ,IfcAxis2PlacementLinear)) SUBTYPE OF (IfcGeometricRepresentationItem); Location : IfcPoint; DERIVE Dim : IfcDimensionCount := Location.Dim; END_ENTITY;