8.9.3.38 IfcMappedItem
8.9.3.38.1 Semantic definition
The IfcMappedItem is the inserted instance of a source definition (to be compared with a block / shared cell / macro definition). The instance is inserted by applying a Cartesian transformation operator as the MappingTarget.
Informal Propositions
- A mapped item shall not be self-defining by participating in the definition of the representation being mapped.
- The dimensionality of the mapping source and the mapping target has to be the same, if the mapping source is a geometric representation item.
8.9.3.38.2 Entity inheritance
8.9.3.38.3 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. |
|
| Click to show 2 hidden inherited attributes Click to hide 2 inherited attributes | |||
| IfcMappedItem (2) | |||
| 1 | MappingSource | IfcRepresentationMap |
A representation map that is the source of the mapped item. It can be seen as a block (or cell or marco) definition. |
| 2 | MappingTarget | IfcCartesianTransformationOperator |
A representation item that is the target onto which the mapping source is mapped. It is constraint to be a Cartesian transformation operator. |
8.9.3.38.4 Examples
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Figure 8.9.3.38.A -
Figure 8.9.3.38.B -
Figure 8.9.3.38.C -
Figure 8.9.3.38.D -
Figure 8.9.3.38.E -
Figure 8.9.3.38.F -
Figure 8.9.3.38.G -
Figure 8.9.3.38.H -
Figure 8.9.3.38.I -
Figure 8.9.3.38.J
8.9.3.38.5 Formal representation
ENTITY IfcMappedItem
SUBTYPE OF (IfcRepresentationItem);
MappingSource : IfcRepresentationMap;
MappingTarget : IfcCartesianTransformationOperator;
END_ENTITY;