8.9.3.50 IfcPointOnCurve
8.9.3.50.1 Semantic definition
The IfcPointOnCurve is a point defined by a parameter value of its defining curve.
Informal Propositions:
- The value of the point parameter shall not be outside the parametric range of the curve.
8.9.3.50.2 Entity inheritance
-
- IfcPoint
- IfcAnnotationFillArea
- IfcBooleanResult
- IfcBoundingBox
- IfcCartesianPointList
- IfcCartesianTransformationOperator
- IfcCsgPrimitive3D
- IfcCurve
- IfcDirection
- IfcFaceBasedSurfaceModel
- IfcFillAreaStyleHatching
- IfcFillAreaStyleTiles
- IfcGeometricSet
- IfcHalfSpaceSolid
- IfcLightSource
- IfcPlacement
- IfcPlanarExtent
- IfcSectionedSpine
- IfcSegment
- IfcShellBasedSurfaceModel
- IfcSolidModel
- IfcSurface
- IfcTessellatedItem
- IfcTextLiteral
- IfcVector
8.9.3.50.3 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. |
|
| Click to show 2 hidden inherited attributes Click to hide 2 inherited attributes | |||
| IfcPointOnCurve (3) | |||
| 1 | BasisCurve | IfcCurve |
The curve to which point parameter relates. |
| 2 | PointParameter | IfcParameterValue |
The parameter value of the point location. |
| * | Dim | IfcDimensionCount |
This attribute is formally derived. The space dimensionality of this class, determined by the space dimensionality of the basis curve. |
8.9.3.50.4 Formal representation
ENTITY IfcPointOnCurve
SUBTYPE OF (IfcPoint);
BasisCurve : IfcCurve;
PointParameter : IfcParameterValue;
DERIVE
Dim : IfcDimensionCount := BasisCurve.Dim;
END_ENTITY;