8.9.3.44 IfcPcurve
8.9.3.44.1 Semantic definition
The IfcPcurve is a curve defined within the parameter space of its reference surface.
8.9.3.44.2 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
8.9.3.44.3 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. |
8.9.3.44.4 Formal propositions
Name | Description |
---|---|
DimIs2D |
The dimensionality of the parameter space curve shall be 2. |
|
8.9.3.44.5 Formal representation
ENTITY IfcPcurve
SUBTYPE OF (IfcCurve);
BasisSurface : IfcSurface;
ReferenceCurve : IfcCurve;
WHERE
DimIs2D : ReferenceCurve.Dim = 2;
END_ENTITY;