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
NOTE A mapped item is a subtype of representation item. It enables a representation to
be used as a representation item in one or more other representations. The mapped item allows for the definition of a
representation using other representations.
EXAMPLE An IfcMappedItem can reuse other mapped items (ako nested blocks),
doing so the IfcRepresentationMap is based on an IfcShapeRepresentation including one or more
NOTE Definition according to ISO/CD 10303-43:1992
A mapped item is a type of representation item that specifies the mapping of a representation as an element of the
items of a second representation.
NOTE Entity adapted from mapped_item defined in ISO
HISTORY New entity in IFC2x.
- A mapped item shall not be self-defining by participating in the definition of the representation being
- The dimensionality of the mapping source and the mapping target has to be the same, if the mapping source is a
geometric representation item.
XSD Specification: <xs:element name="IfcMappedItem" type="ifc:IfcMappedItem" substitutionGroup="ifc:IfcRepresentationItem" nillable="true"/>
<xs:element name="MappingSource" type="ifc:IfcRepresentationMap" nillable="true"/>
<xs:element name="MappingTarget" type="ifc:IfcCartesianTransformationOperator" nillable="true"/>
|MappingSource|| : ||A representation map that is the source of the mapped item. It can be seen as a block (or cell or marco) definition.|
|MappingTarget|| : ||A representation item that is the target onto which the mapping source is mapped. It is constraint to be a Cartesian transformation operator.|
Link to this page