IfcBooleanOperator

Semantic definitions at the type

Type definition

Boolean operators that apply to the first and second Boolean operands.

NOTE Definition according to ISO/CD 10303-42:1992
This type defines the three Boolean operators used in the definition of CSG solids.

NOTE Entity adapted from boolean_operator defined in ISO 10303-42.

HISTORY New entity in IFC1.5.1.

Enumeration definition

Constant	Description
UNION	The operation of constructing the regularized set theoretic union of the volumes defined by two solids.
INTERSECTION	The operation of constructing the regularised set theoretic intersection of the volumes defined by two solids.
DIFFERENCE	The regularised set theoretic difference between the volumes defined by two solids.

Formal representations

XSD Specification

 <xs:simpleType name="IfcBooleanOperator">

  <xs:restriction base="xs:string">

   <xs:enumeration value="union"/>

   <xs:enumeration value="intersection"/>

   <xs:enumeration value="difference"/>

  </xs:restriction>

 </xs:simpleType>

EXPRESS Specification


TYPE IfcBooleanOperator = ENUMERATION OF (

 UNION, 
 INTERSECTION, 
 DIFFERENCE);
END_TYPE;


 EXPRESS-G diagram

	Boolescher Operator
	Boolean Operator
	Opérateur booléen