IfcFaceOuterBound

实体定义

注：定义依据ISO/CD 10303-42:1992

面外边界是面边界的一个特殊子类型，它承载了在面上定义外边界的附加语义。此类表面的边界不得超过一个。

注：实体适用于ISO 10303-42中定义的face_outer_bound。

IFC1.0中的新实体

Attribute inheritance

#	Attribute	Type	Cardinality	Description	C
IfcRepresentationItem
	LayerAssignment	IfcPresentationLayerAssignment @AssignedItems	S[0:1]	Assignment of the representation item to a single or multiple layer(s). The LayerAssignments can override a LayerAssignments of the IfcRepresentation it is used within the list of Items.	X
	StyledByItem	IfcStyledItem @Item	S[0:1]	Reference to the IfcStyledItem that provides presentation information to the representation, e.g. a curve style, including colour and thickness to a geometric curve.	X
IfcTopologicalRepresentationItem
IfcFaceBound
1	Bound	IfcLoop	[1:1]	The loop which will be used as a face boundary.	X
2	Orientation	IfcBoolean	[1:1]	This indicated whether (TRUE) or not (FALSE) the loop has the same sense when used to bound the face as when first defined. If sense is FALSE the senses of all its component oriented edges are implicitly reversed when used in the face.	X
IfcFaceOuterBound

EXPRESS Specification

ENTITY IfcFaceOuterBound
 SUBTYPE OF (IfcFaceBound);
END_ENTITY;

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标签：IfcFaceOuterBound,used,定义,when,face,边界
From： https://www.cnblogs.com/herd/p/17582408.html