8.9.3.66 IfcSphericalSurface
8.9.3.66.1 Semantic definition
The IfcSphericalSurface is a bounded elementary surface. The inherited Position attribute defines the IfcAxisPlacement3D and provides:
- SELF\IfcElementarySurface.Position: The location and orientation of the axis system for the primitive.
- SELF\IfcElementarySurface.Position.Location: The center of the spherical surface.
- SELF\IfcElementarySurface.Position.Position[3]: The z axis points at its positive direction towards the north pole, and by its negative directions towards the south pole.
8.9.3.66.2 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
8.9.3.66.3 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. |
|
| IfcSurface (1) | |||
| * | Dim | IfcDimensionCount |
This attribute is formally derived. The space dimensionality of IfcSurface. It is always a three-dimensional geometric representation item. |
| IfcElementarySurface (1) | |||
| 1 | Position | IfcAxis2Placement3D |
The position and orientation of the surface. This attribute is used in the definition of the parameterization of the surface. |
| Click to show 4 hidden inherited attributes Click to hide 4 inherited attributes | |||
| IfcSphericalSurface (1) | |||
| 2 | Radius | IfcPositiveLengthMeasure |
The radius of the sphere. |
8.9.3.66.4 Formal representation
ENTITY IfcSphericalSurface
SUBTYPE OF (IfcElementarySurface);
Radius : IfcPositiveLengthMeasure;
END_ENTITY;