IFC 4.3.x development

8.8.3.45 IfcTessellatedItem

Change log

IFC4

added

8.8.3.45.1 Semantic definitions at the entity

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

HISTORY  New entity in IFC4.

# Attribute Type Description
IfcRepresentationItem
LayerAssignmentSET [0:1] OF IfcPresentationLayerAssignment FOR AssignedItemsAssignment 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.
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.



> IFC2x3 CHANGE  The inverse attribute StyledByItem has been added.

8.8.3.45.1 Entity inheritance

dot_inheritance IfcIndexedPolygonalFace IfcIndexedPolygonalFace IfcTessellatedItem IfcTessellatedItem IfcIndexedPolygonalFace->IfcTessellatedItem IfcGeometricRepresentationItem IfcGeometricRepresentationItem IfcTessellatedItem->IfcGeometricRepresentationItem IfcTessellatedFaceSet IfcTessellatedFaceSet IfcTessellatedFaceSet->IfcTessellatedItem IfcGeometricRepresentationItem_children 24 more... IfcGeometricRepresentationItem_children->IfcGeometricRepresentationItem IfcRepresentationItem IfcRepresentationItem IfcGeometricRepresentationItem->IfcRepresentationItem IfcRepresentationItem_children 3 more... IfcRepresentationItem_children->IfcRepresentationItem

8.8.3.45.2 Formal representations

ENTITY IfcTessellatedItem
 ABSTRACT SUPERTYPE OF (ONEOF
	(IfcIndexedPolygonalFace
	,IfcTessellatedFaceSet))
 SUBTYPE OF (IfcGeometricRepresentationItem);
END_ENTITY;