8.12.2.16 IfcSurfaceSide

8.12.2.16.1 Semantic definition

IfcSurfaceSide is a denotion of whether negative, positive or both sides of a surface are being referenced.

Type	Description
`BOTH`	Both, positive and negative side.
`NEGATIVE`	The side of a surface which is in the opposite direction than the surface normal derived from the mathematical definition.
`POSITIVE`	The side of a surface which is in the same direction as the surface normal derived from the mathematical definition.

Table 8.12.2.16.A

TYPE IfcSurfaceSide = ENUMERATION OF
	(BOTH
	,NEGATIVE
	,POSITIVE);
END_TYPE;