8.13.3.6 IfcTextLiteralWithExtent
8.13.3.6.1 Semantic definition
The text literal with extent is a text literal with the additional explicit information of the planar extent. An alignment attribute defines how the text box is aligned to the placement and how it may expand if additional lines of text need to be added.
Figure 8.13.3.6.A shows the use of planar extent and box alignment to position the text string

The planar extent defines the box model within which the text is placed. Padding maybe defined in the text style that offsets the text from the box to its inside.
8.13.3.6.2 Entity inheritance
-
- IfcTextLiteral
- IfcAnnotationFillArea
- IfcBooleanResult
- IfcBoundingBox
- IfcCartesianPointList
- IfcCartesianTransformationOperator
- IfcCsgPrimitive3D
- IfcCurve
- IfcDirection
- IfcFaceBasedSurfaceModel
- IfcFillAreaStyleHatching
- IfcFillAreaStyleTiles
- IfcGeometricSet
- IfcHalfSpaceSolid
- IfcLightSource
- IfcPlacement
- IfcPlanarExtent
- IfcPoint
- IfcSectionedSpine
- IfcSegment
- IfcShellBasedSurfaceModel
- IfcSolidModel
- IfcSurface
- IfcTessellatedItem
- IfcVector
8.13.3.6.3 Attributes
# | Attribute | Type | Description |
---|---|---|---|
IfcRepresentationItem (2) | |||
IfcTextLiteral (3) | |||
Click to show 5 hidden inherited attributes Click to hide 5 inherited attributes | |||
IfcTextLiteralWithExtent (2) | |||
4 | Extent | IfcPlanarExtent |
The extent in the x and y direction of the text literal. |
5 | BoxAlignment | IfcBoxAlignment |
The alignment of the text literal relative to its position. |
8.13.3.6.4 Formal propositions
Name | Description |
---|---|
WR31 |
The subtype of IfcPlanarExtent, IfcPlanarBox, should not be used to represent an Extent for the text literal. |
|
8.13.3.6.5 Formal representation
ENTITY IfcTextLiteralWithExtent SUBTYPE OF (IfcTextLiteral); Extent : IfcPlanarExtent; BoxAlignment : IfcBoxAlignment; WHERE WR31 : NOT('IFC4X3_DEV_738df036.IFCPLANARBOX' IN TYPEOF(Extent)); END_ENTITY;