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
-
- IfcCartesianPointList
- IfcAnnotationFillArea
- IfcBooleanResult
- IfcBoundingBox
- IfcCartesianTransformationOperator
- IfcCsgPrimitive3D
- IfcCurve
- IfcDirection
- IfcFaceBasedSurfaceModel
- IfcFillAreaStyleHatching
- IfcFillAreaStyleTiles
- IfcGeometricSet
- IfcHalfSpaceSolid
- IfcLightSource
- IfcPlacement
- IfcPlanarExtent
- IfcPoint
- IfcSectionedSpine
- IfcSegment
- IfcShellBasedSurfaceModel
- IfcSolidModel
- IfcSurface
- IfcTessellatedItem
- IfcTextLiteral
- IfcVector
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. The inverse attribute LayerAssignments has been added. 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. The inverse attribute StyledByItem has been added. |
|
| IfcCartesianPointList (1) | |||
| * | Dim | IfcDimensionCount |
This attribute is formally derived. 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. |
8.8.3.9.4 Examples
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;