8.8.3.9 IfcCartesianPointList2D

RV ⓘ

AbV ⓘ

8.8.3.9.1 Semantic definition

The IfcCartesianPointList2D defines an ordered collection of two-dimentional Cartesian points. Each Cartesian point is provided as an two-dimensional point by a fixed list of two coordinates. The attribute CoordList is a two-dimensional list, where

first dimension is an unbounded list representing each 2D Cartesian point;
second dimension is a fixed list of two list members, where [1] is the x-coordinate, and [2] the y-coordinate of the Cartesian point.

8.8.3.9.2 Entity inheritance

8.8.3.9.3 Attributes

#	Attribute	Type	Description
IfcRepresentationItem (2)
	LayerAssignment	SET [0:1] OF IfcPresentationLayerAssignment FOR AssignedItems	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. IFC2x3-CHANGE The inverse attribute LayerAssignments has been added. IFC4-CHANGE The inverse attribute LayerAssignment has been restricted to max 1. Upward compatibility for file based exchange is guaranteed.
	StyledByItem	SET [0:1] OF IfcStyledItem FOR Item	Reference to the IfcStyledItem that provides presentation information to the representation, e.g. a curve style, including colour and thickness to a geometric curve. IFC2x3-CHANGE The inverse attribute StyledByItem has been added.
IfcCartesianPointList (1)
*	Dim	IfcDimensionCount	This attribute is formally derived. `IfcPointListDim(SELF)` The space dimensionality of this class, either 2 or 3, depending on the sub type.
Click to show 3 hidden inherited attributes Click to hide 3 inherited attributes
IfcCartesianPointList2D (2)
1	CoordList	LIST [1:?] OF LIST [2:2] OF IfcLengthMeasure	Two-dimensional list of Cartesian points provided by two coordinates.
2	TagList	OPTIONAL LIST [1:?] OF IfcLabel	List of tags corresponding to each point that may be used to identify a basis curve according to the Tag attribute at IfcOffsetCurveByDistances. Also used to identify IfcSectionedSolidHorizontal or IfcSectionedSurface shape string lines ("guide curves") when used within an IfcProfileDef curve of type IfcIndexedPolyCurve.

Table 8.8.3.9.F

8.8.3.9.4 Examples

Figure 8.8.3.9.A

Slab Openings
Figure 8.8.3.9.B

Fixed Reference Swept Area Solid
Figure 8.8.3.9.C

Sectioned Solid Horizontal
Figure 8.8.3.9.D

Beam Extruded Solid
Figure 8.8.3.9.E

Slab Extrusion

8.8.3.9.5 Formal representation

ENTITY IfcCartesianPointList2D
 SUBTYPE OF (IfcCartesianPointList);
	CoordList : LIST [1:?] OF LIST [2:2] OF IfcLengthMeasure;
	TagList : OPTIONAL LIST [1:?] OF IfcLabel;
END_ENTITY;