8.7.3.6 IfcConnectionGeometry 
NOTE   This entity is not part of a standardized schema subset or implementation level.
ABSTRACT  This definition may not be instantiated
        
 
 
 
    8.7.3.6.1 Semantic definition
 
IfcConnectionGeometry   is used to describe the geometric and topological constraints that facilitate the physical connection of two objects. It is envisioned as a control that applies to the element connection relationships.
NOTE   The element connection relationship normally provides for a logical connection information, by referencing the relating and related elements. If in addition an IfcConnectionGeometry   is provided, physical connection information is given by specifying exactly where at the relating and related element the element connection occurs. Using the eccentricity subtypes, the connection can also be described when there is a physical distance (or eccentricity) between the connection elements. 
The IfcConnectionGeometry   allows for the provision of connection constraints between geometric and topological elements, the following connection geometry/topology types are in scope:
point | vertex point 
curve | edge curve 
surface | face surface 
solid model | closed shell 
 
HISTORY   New entity in IFC1.5.IFC2x3-CHANGE   The definition of the subtypes has been enhanced by allowing either geometric representation items (point | curve | surface) or topological representation items with associated geometry (vertex point | edge curve | face  surface). 
 
    8.7.3.6.2 Entity inheritance
 
 
 
 
 
 
 
    8.7.3.6.3 Attributes
 
 
 
 
 
 
# 
Attribute 
Type 
Description 
 
 
 
Table 8.7.3.6.A  
 
    8.7.3.6.4 Formal representation
 
ENTITY IfcConnectionGeometry 
 ABSTRACT SUPERTYPE OF (ONEOF
	(IfcConnectionCurveGeometry 
	,IfcConnectionPointGeometry 
	,IfcConnectionSurfaceGeometry 
	,IfcConnectionVolumeGeometry ));
END_ENTITY; 
 
    8.7.3.6.5 References