IfcTessellatedItem

BACnet MVD

#### IfcTessellatedItem

Natural language names

| tesselliertes Element
| Tessellated Item
| Tessellation

Change log

Item | SPF | XML | Change | Description
--- | --- | --- | --- | ---
IFC2x3 to IFC4
IfcTessellatedItem |  |  | ADDED |

##### Semantic definitions at the entity

Entity definition

The IfcTessellatedItem is the abstract supertype of all tessellated geometric models.

> HISTORY New entity in IFC4.

##### Inherited definitions from supertypes

Entity inheritance
Attribute inheritance

# | Attribute | Type | Cardinality | Description | B
--- | --- | --- | --- | --- | ---
IfcRepresentationItem

LayerAssignment

IfcPresentationLayerAssignment
@AssignedItems

S[0:1]

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.

> IFC2x3 CHANGE The inverse attribute LayerAssignments has been added.

> IFC4 CHANGE The inverse attribute LayerAssignment has been restricted to max 1. Upward compatibility for file based exchange is guaranteed.

X

StyledByItem

IfcStyledItem
@Item

S[0:1]

Reference to the IfcStyledItem that provides presentation information to the representation, e.g. a curve style, including colour and thickness to a geometric curve.

> IFC2x3 CHANGE The inverse attribute StyledByItem has been added.

X

X

IfcGeometricRepresentationItem
IfcTessellatedItem

##### Formal representations

XML Specification
`<xs:element name="IfcTessellatedItem" type="ifc:IfcTessellatedItem" abstract="true" substitutionGroup="ifc:IfcGeometricRepresentationItem" nillable="true"/>
<xs:complexType name="IfcTessellatedItem" abstract="true">
<xs:complexContent>
<xs:extension base="ifc:IfcGeometricRepresentationItem"/>
</xs:complexContent>
</xs:complexType>
`
EXPRESS Specification
`ENTITY IfcTessellatedItem
ABSTRACT SUPERTYPE OF(ONEOF(IfcIndexedPolygonalFace, IfcTessellatedFaceSet))
SUBTYPE OF (IfcGeometricRepresentationItem);
END_ENTITY;

EXPRESS-G diagram

`

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