IFC 4.3.x development

8.12.3.24 IfcPreDefinedItem

8.12.3.24.1 Semantic definitions at the entity

A pre defined item is a qualified name given to a style or font which is determined within the data exchange specification by convention on using the Name attribute value (in contrary to externally defined items, which are agreed by an external source).

NOTE  The convention on using the Name value is defined at the subtypes of IfcPreDefinedItem and is part of the specification.

NOTE  Corresponding ISO 10303 name: pre_defined_item. Please refer to ISO/IS 10303-41:1994, page 137 for the final definition of the formal standard.

HISTORY  New entity in IFC2x2.

8.12.3.24.1 Attributes

#Attribute Type Description
IfcPresentationItem
IfcPreDefinedItem
1Name IfcLabelThe string by which the pre defined item is identified. Allowable values for the string are declared at the level of subtypes.

8.12.3.24.2 Entity inheritance

dot_inheritance IfcPreDefinedColour IfcPreDefinedColour IfcPreDefinedItem IfcPreDefinedItem IfcPreDefinedColour->IfcPreDefinedItem IfcPresentationItem IfcPresentationItem IfcPreDefinedItem->IfcPresentationItem IfcPreDefinedCurveFont IfcPreDefinedCurveFont IfcPreDefinedCurveFont->IfcPreDefinedItem IfcPreDefinedTextFont IfcPreDefinedTextFont IfcPreDefinedTextFont->IfcPreDefinedItem IfcPresentationItem_children 16 more... IfcPresentationItem_children->IfcPresentationItem

8.12.3.24.3 Formal representations

ENTITY IfcPreDefinedItem
 ABSTRACT SUPERTYPE OF (ONEOF
	(IfcPreDefinedColour
	,IfcPreDefinedCurveFont
	,IfcPreDefinedTextFont))
 SUBTYPE OF (IfcPresentationItem);
	Name : IfcLabel;
END_ENTITY;