8.9.3.11 IfcBoundedSurface
AbV ⓘ
ABSTRACT This definition may not be instantiated
8.9.3.11.1 Semantic definition
An IfcBoundedSurface is a surface of finite area.
Definition according to ISO/CD 10303-42:1992 A bounded surface is a surface of finite area with identifiable boundaries. Entity adapted from bounded_surface defined in ISO10303-42. New entity in IFC2x Entity made abstract.Informal Propositions
- A bounded surface has finite non-zero surface area.
- A bounded surface has boundary curves.
8.9.3.11.2 Entity inheritance
-
- IfcSurface
- IfcAnnotationFillArea
- IfcBooleanResult
- IfcBoundingBox
- IfcCartesianPointList
- IfcCartesianTransformationOperator
- IfcCsgPrimitive3D
- IfcCurve
- IfcDirection
- IfcFaceBasedSurfaceModel
- IfcFillAreaStyleHatching
- IfcFillAreaStyleTiles
- IfcGeometricSet
- IfcHalfSpaceSolid
- IfcLightSource
- IfcPlacement
- IfcPlanarExtent
- IfcPoint
- IfcSectionedSpine
- IfcSegment
- IfcShellBasedSurfaceModel
- IfcSolidModel
- IfcTessellatedItem
- IfcTextLiteral
- IfcVector
8.9.3.11.3 Attributes
| # | Attribute | Type | Description |
|---|---|---|---|
| IfcRepresentationItem (2) | |||
| LayerAssignment | SET [0:1] OF IfcPresentationLayerAssignment FOR AssignedItems |
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. The inverse attribute LayerAssignments has been added. 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. The inverse attribute StyledByItem has been added. |
|
| Click to show 2 hidden inherited attributes Click to hide 2 inherited attributes | |||
| IfcSurface (1) | |||
| * | Dim | IfcDimensionCount |
This attribute is formally derived. The space dimensionality of IfcSurface. It is always a three-dimensional geometric representation item. Derived attribute promoted from subtypes. |
8.9.3.11.4 Formal representation
ENTITY IfcBoundedSurface
ABSTRACT SUPERTYPE OF (ONEOF
(IfcBSplineSurface
,IfcCurveBoundedPlane
,IfcCurveBoundedSurface
,IfcRectangularTrimmedSurface))
SUBTYPE OF (IfcSurface);
END_ENTITY;