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ODA IFC SDK
IfcRelVoidsElement Class
Syntax
C++
class IfcRelVoidsElement : public IfcRelDecomposes;

IfcRelVoidsElement is an objectified relationship between a building element and one opening element that creates a void in the element. It is a one-to-one relationship. This relationship implies a Boolean operation of subtraction between the geometric bodies of the element and the opening. 

The following image shows the insertion of a void into a wall that is represented by the relationship IfcRelVoidsElement. The opening is created within the wall by IfcWall(StandardCase) o-- IfcRelVoidsElement --o IfcOpeningElement. 

changes 

 

  • IFC4 changes: Supertype changed from IfcRelConnects to IfcRelDecomposes.
OdIfc4__IfcRelVoidsElementOdIfc4__IfcRelVoidsElementOdIfc4__IfcRelVoidsElementOdIfc4__IfcRelVoidsElementOdIfc4__IfcRelVoidsElementOdIfc4__IfcRelVoidsElementOdIfc4__IfcRelVoidsElementOdIfc4__IfcRelVoidsElement

File: IfcRelVoidsElementAutoImpl.h 

Namespace: OdIfc4 

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