8.9.3.45 IfcPcurve
8.9.3.45.1 Semantic definition
The IfcPcurve is a curve defined within the parameter space of its reference surface.
8.9.3.45.2 Entity inheritance
-
- IfcCurve
- IfcAnnotationFillArea
- IfcBooleanResult
- IfcBoundingBox
- IfcCartesianPointList
- IfcCartesianTransformationOperator
- IfcCsgPrimitive3D
- IfcDirection
- IfcFaceBasedSurfaceModel
- IfcFillAreaStyleHatching
- IfcFillAreaStyleTiles
- IfcGeometricSet
- IfcHalfSpaceSolid
- IfcLightSource
- IfcPlacement
- IfcPlanarExtent
- IfcPoint
- IfcSectionedSpine
- IfcSegment
- IfcShellBasedSurfaceModel
- IfcSolidModel
- IfcSurface
- IfcTessellatedItem
- IfcTextLiteral
- IfcVector
8.9.3.45.3 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. |
|
| 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. |
|
| IfcCurve (1) | |||
| * | Dim | IfcDimensionCount |
This attribute is formally derived. The space dimensionality of this abstract class, defined differently for all subtypes, i.e. for IfcLine, IfcConic and IfcBoundedCurve. |
| Click to show 3 hidden inherited attributes Click to hide 3 inherited attributes | |||
| IfcPcurve (2) | |||
| 1 | BasisSurface | IfcSurface |
No description available. |
| 2 | ReferenceCurve | IfcCurve |
No description available. |
8.9.3.45.4 Formal propositions
| Name | Description |
|---|---|
| DimIs2D |
The dimensionality of the parameter space curve shall be 2. |
|
|
8.9.3.45.5 Formal representation
ENTITY IfcPcurve
SUBTYPE OF (IfcCurve);
BasisSurface : IfcSurface;
ReferenceCurve : IfcCurve;
WHERE
DimIs2D : ReferenceCurve.Dim = 2;
END_ENTITY;