IfcCsgSelect

Definition from ISO/CD 10303-42:1992: This type identifies the types of entity which may be selected as the root of a CSG tree including a single CSG primitive as a special case (currently not in IFC).

Definition from IAI: In the current IFC Release only Boolean result (IfcBooleanResult) is defined for being a root tree expression (at IfcCsgSolid). CSG primitives are out of scope for the current IFC Release.

> NOTE Corresponding STEP type: csg_select, please refer to ISO/IS 10303-42:1994, p.168 for the final definition of the formal standard.

> HISTORY New Type in IFC Release 1.5.1.

EXPRESS specification:

TYPE IfcCsgSelect = SELECT
( | IfcBooleanResult, IfcCsgPrimitive3D);
END_TYPE;