8.9.3.52 IfcPolynomialCurve
AbV ⓘ
8.9.3.52.1 Semantic definition
Polynomial Curve.
8.9.3.52.2 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
8.9.3.52.3 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 | |||
| IfcPolynomialCurve (4) | |||
| 1 | Position | IfcPlacement |
No description available. |
| 2 | CoefficientsX | OPTIONAL LIST [2:?] OF IfcReal |
No description available. |
| 3 | CoefficientsY | OPTIONAL LIST [2:?] OF IfcReal |
No description available. |
| 4 | CoefficientsZ | OPTIONAL LIST [2:?] OF IfcReal |
No description available. |
8.9.3.52.4 Formal propositions
| Name | Description |
|---|---|
| CorrectPositionDim |
No description available. |
|
|
| ValidCoefficients |
No description available. |
|
|
8.9.3.52.5 Formal representation
ENTITY IfcPolynomialCurve
SUBTYPE OF (IfcCurve);
Position : IfcPlacement;
CoefficientsX : OPTIONAL LIST [2:?] OF IfcReal;
CoefficientsY : OPTIONAL LIST [2:?] OF IfcReal;
CoefficientsZ : OPTIONAL LIST [2:?] OF IfcReal;
WHERE
CorrectPositionDim : ((Position.Dim=2) AND (NOT EXISTS(CoefficientsZ))) OR (Position.Dim=3);
ValidCoefficients : (EXISTS(CoefficientsX) AND EXISTS(CoefficientsY)) OR (EXISTS(CoefficientsX) AND EXISTS(CoefficientsZ)) OR (EXISTS(CoefficientsY) AND EXISTS(CoefficientsZ)) OR (EXISTS(CoefficientsX) AND EXISTS(CoefficientsY) AND EXISTS(CoefficientsZ));
END_ENTITY;