8.8.3.11 IfcCsgPrimitive3D
ABSTRACT This definition may not be instantiated
8.8.3.11.1 Semantic definition
IfcCsgPrimitive3D is an abstract supertype of all three dimensional primitives used as either tree root item, or as Boolean results within a CSG solid model. All 3D CSG primitives are defined within a three-dimensional placement coordinate system.
New entity in IFC2x3.8.8.3.11.2 Entity inheritance
-
- IfcCsgPrimitive3D
- IfcAnnotationFillArea
- IfcBooleanResult
- IfcBoundingBox
- IfcCartesianPointList
- IfcCartesianTransformationOperator
- IfcCurve
- IfcDirection
- IfcFaceBasedSurfaceModel
- IfcFillAreaStyleHatching
- IfcFillAreaStyleTiles
- IfcGeometricSet
- IfcHalfSpaceSolid
- IfcLightSource
- IfcPlacement
- IfcPlanarExtent
- IfcPoint
- IfcSectionedSpine
- IfcSegment
- IfcShellBasedSurfaceModel
- IfcSolidModel
- IfcSurface
- IfcTessellatedItem
- IfcTextLiteral
- IfcVector
8.8.3.11.3 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. The inverse attribute LayerAssignments has been added. The inverse attribute LayerAssignment has been restricted to max 1. Upward compatibility for file based exchange is guaranteed. |
|
| 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. The inverse attribute StyledByItem has been added. |
|
| Click to show 2 hidden inherited attributes Click to hide 2 inherited attributes | |||
| IfcCsgPrimitive3D (2) | |||
| 1 | Position | IfcAxis2Placement3D |
The placement coordinate system to which the parameters of each individual CSG primitive apply. |
| * | Dim | IfcDimensionCount |
This attribute is formally derived. The space dimensionality of this geometric representation item, it is always 3. |
8.8.3.11.4 Formal representation
ENTITY IfcCsgPrimitive3D
ABSTRACT SUPERTYPE OF (ONEOF
(IfcBlock
,IfcRectangularPyramid
,IfcRightCircularCone
,IfcRightCircularCylinder
,IfcSphere))
SUBTYPE OF (IfcGeometricRepresentationItem);
Position : IfcAxis2Placement3D;
DERIVE
Dim : IfcDimensionCount := 3;
END_ENTITY;