8.9.3.12 IfcCartesianPoint
8.9.3.12.1 Semantic definition
An IfcCartesianPoint defines a point by coordinates in an orthogonal, right-handed Cartesian coordinate system. For the purpose of this specification only two and three dimensional Cartesian points are used.
8.9.3.12.2 Entity inheritance
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- IfcPoint
- IfcAnnotationFillArea
- IfcBooleanResult
- IfcBoundingBox
- IfcCartesianPointList
- IfcCartesianTransformationOperator
- IfcCsgPrimitive3D
- IfcCurve
- IfcDirection
- IfcFaceBasedSurfaceModel
- IfcFillAreaStyleHatching
- IfcFillAreaStyleTiles
- IfcGeometricSet
- IfcHalfSpaceSolid
- IfcLightSource
- IfcPlacement
- IfcPlanarExtent
- IfcSectionedSpine
- IfcSegment
- IfcShellBasedSurfaceModel
- IfcSolidModel
- IfcSurface
- IfcTessellatedItem
- IfcTextLiteral
- IfcVector
8.9.3.12.3 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. |
|
| Click to show 2 hidden inherited attributes Click to hide 2 inherited attributes | |||
| IfcCartesianPoint (2) | |||
| 1 | Coordinates | LIST [1:3] OF IfcLengthMeasure |
The first, second, and third coordinate of the point location. If placed in a two or three dimensional rectangular Cartesian coordinate system, Coordinates[1] is the X coordinate, Coordinates[2] is the Y coordinate, and Coordinates[3] is the Z coordinate. |
| * | Dim | IfcDimensionCount |
This attribute is formally derived. The space dimensionality of this class, determined by the number of coordinates in the List of Coordinates. |
8.9.3.12.4 Formal propositions
| Name | Description |
|---|---|
| CP2Dor3D |
Only two or three dimensional points are in scope. |
|
|
8.9.3.12.5 Examples
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Figure 8.9.3.12.A -
Figure 8.9.3.12.B -
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Figure 8.9.3.12.E -
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Figure 8.9.3.12.I -
Figure 8.9.3.12.J -
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Figure 8.9.3.12.L -
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Figure 8.9.3.12.P -
Figure 8.9.3.12.Q -
Figure 8.9.3.12.R -
Figure 8.9.3.12.S -
Figure 8.9.3.12.T
8.9.3.12.6 Formal representation
ENTITY IfcCartesianPoint
SUBTYPE OF (IfcPoint);
Coordinates : LIST [1:3] OF IfcLengthMeasure;
DERIVE
Dim : IfcDimensionCount := HIINDEX(Coordinates);
WHERE
CP2Dor3D : HIINDEX(Coordinates) >= 2;
END_ENTITY;