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.
HISTORY New entity in IFC2x3.
|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.|
> IFC2x3 CHANGE The inverse attribute LayerAssignments has been added.
> IFC4 CHANGE 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.|
> IFC2x3 CHANGE The inverse attribute StyledByItem has been added.
|1||Position||IfcAxis2Placement3D||The placement coordinate system to which the parameters of each individual CSG primitive apply.|
|Dim||INVALID||The space dimensionality of this geometric representation item, it is always 3.|
ENTITY IfcCsgPrimitive3D ABSTRACT SUPERTYPE OF (ONEOF (IfcBlock ,IfcRectangularPyramid ,IfcRightCircularCone ,IfcRightCircularCylinder ,IfcSphere)) SUBTYPE OF (IfcGeometricRepresentationItem); Position : IfcAxis2Placement3D; DERIVE Dim : IfcDimensionCount := 3; END_ENTITY;