IFC 4.3.x development IfcTextLiteral Semantic definitions at the entity

The text literal is a geometric representation item which describes a text string using a string literal and additional position and path information. The text size and appearance is determined by the IfcTextStyle that is associated to the IfcTextLiteral through an IfcStyledItem.

The text string is placed within the planar extent (the box) defined within the subtype IfcTextLiteralWithExtent.

NOTE  Entity adapted from text_literal defined in ISO10303-46

HISTORY  New entity in IFC2x2.

IFC2x3 CHANGE  The IfcTextLiteral has been changed by removing Font and Alignment.

DEPRECATION  The use of IfcTextLiteral is deprecated and it will be made abstract. Attributes

# Attribute Type Description
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.
1 Literal IfcPresentableText The text literal to be presented.
2 Placement IfcAxis2Placement An IfcAxis2Placement that determines the placement and orientation of the presented string.
3 Path IfcTextPath The writing direction of the text literal. Entity inheritance

dot_inheritance IfcTextLiteralWithExtent IfcTextLiteralWithExtent IfcTextLiteral IfcTextLiteral IfcTextLiteralWithExtent->IfcTextLiteral IfcGeometricRepresentationItem IfcGeometricRepresentationItem IfcTextLiteral->IfcGeometricRepresentationItem IfcGeometricRepresentationItem_children 24 more... IfcGeometricRepresentationItem_children->IfcGeometricRepresentationItem IfcRepresentationItem IfcRepresentationItem IfcGeometricRepresentationItem->IfcRepresentationItem IfcRepresentationItem_children 3 more... IfcRepresentationItem_children->IfcRepresentationItem Formal representations

ENTITY IfcTextLiteral
 SUBTYPE OF (IfcGeometricRepresentationItem);
	Literal : IfcPresentableText;
	Placement : IfcAxis2Placement;
	Path : IfcTextPath;