IfcPoint

IfcPoint是笛卡尔坐标系中所有点表示的抽象概括。

注：定义根据ISO/CD 10303-42:1992

对于m=1、2或3，点是某个实际笛卡尔坐标空间Rm中的一个位置。

注：实体改编自ISO 10303-42中的点。

IFC1.5中增加的新实体

#	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
IfcGeometricRepresentationItem
IfcPoint

EXPRESS Specification

ENTITY IfcPoint
 ABSTRACT SUPERTYPE OF(ONEOF(IfcCartesianPoint, IfcPointOnCurve, IfcPointOnSurface))
 SUBTYPE OF (IfcGeometricRepresentationItem);
END_ENTITY;