IfcCsgPrimitive3D
IfcCsgPrimitive3D是所有三维原型的抽象超类型,用作树根项或CSG实体模型中的布尔结果。所有三维CSG基元都是在三维放置坐标系中定义的。
# | Attribute | Type | Cardinality | Description | C |
---|---|---|---|---|---|
IfcRepresentationItem | |||||
LayerAssignment | IfcPresentationLayerAssignment @AssignedItems |
S[0:1] | 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. | X | |
StyledByItem | IfcStyledItem @Item |
S[0:1] | Reference to the IfcStyledItem that provides presentation information to the representation, e.g. a curve style, including colour and thickness to a geometric curve. | X | |
IfcGeometricRepresentationItem | |||||
IfcCsgPrimitive3D | |||||
1 | Position | IfcAxis2Placement3D | [1:1] | The placement coordinate system to which the parameters of each individual CSG primitive apply. | X |
Dim :=3 |
IfcDimensionCount | [1:1] | The space dimensionality of this geometric representation item, it is always 3. | X |
EXPRESS Specification
ENTITY IfcCsgPrimitive3D
ABSTRACT SUPERTYPE OF(ONEOF(IfcBlock, IfcRectangularPyramid, IfcRightCircularCone, IfcRightCircularCylinder, IfcSphere))
SUBTYPE OF (IfcGeometricRepresentationItem);
Position : IfcAxis2Placement3D;
DERIVE
Dim : IfcDimensionCount := 3;
END_ENTITY;
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