IFC 4.3.0.1 (IFC4X3) development

8.8.3.9 IfcCartesianPointList2D

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.

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.

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.A

8.8.3.9.4 Formal representation

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

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8.8.3.9.5 Changelog

  • New resource
  • attribute, TagList