IFC 4.3.0.1 (IFC4X3_TC1)

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.

8.8.3.11.2 Entity inheritance

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.

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
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.

3

The space dimensionality of this geometric representation item, it is always 3.

Table 8.8.3.11.A

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;