IfcTessellatedItem

Item	SPF	XML	Change	Description
IFC2x3 to IFC4 4.0.0.0
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.

Attribute definitions

#	Attribute	Type	Cardinality	Description	G
	HasColours	IfcIndexedColourMap @MappedTo	S[0:1]	Reference to the indexed colour map providing the corresponding colour RGB values to the faces of the subtypes of IfcTessellatedFaceSet.	X

Inherited definitions from supertypes

Entity inheritance

Attribute inheritance

#	Attribute	Type	Cardinality	Description	G
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
IfcGeometricRepresentationItem
IfcTessellatedItem
	HasColours	IfcIndexedColourMap @MappedTo	S[0:1]	Reference to the indexed colour map providing the corresponding colour RGB values to the faces of the subtypes of IfcTessellatedFaceSet.	X

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:sequence>

     <xs:element name="HasColours" type="ifc:IfcIndexedColourMap" nillable="true" minOccurs="0" maxOccurs="1"/>

    </xs:sequence>

   </xs:extension>

  </xs:complexContent>

 </xs:complexType>

EXPRESS Specification


ENTITY IfcTessellatedItem

 ABSTRACT SUPERTYPE OF(ONEOF(IfcIndexedPolygonalFace, IfcTessellatedFaceSet, IfcVoxelGrid))

 SUBTYPE OF (IfcGeometricRepresentationItem);

 INVERSE

  HasColours : SET [0:1] OF IfcIndexedColourMap FOR MappedTo;

END_ENTITY;

 EXPRESS-G diagram

	tesselliertes Element
	Tessellated Item
	Tessellation