8.8.3.49 IfcVoxelGrid
8.8.3.49.1 Semantic definition
An IfcVoxelGrid representation is a 3D solid shape representation that is compiled of a series of regular blocks placed inside a predefined grid.
8.8.3.49.2 Entity inheritance
-
- IfcTessellatedItem
- IfcAnnotationFillArea
- IfcBooleanResult
- IfcBoundingBox
- IfcCartesianPointList
- IfcCartesianTransformationOperator
- IfcCsgPrimitive3D
- IfcCurve
- IfcDirection
- IfcFaceBasedSurfaceModel
- IfcFillAreaStyleHatching
- IfcFillAreaStyleTiles
- IfcGeometricSet
- IfcHalfSpaceSolid
- IfcLightSource
- IfcPlacement
- IfcPlanarExtent
- IfcPoint
- IfcSectionedSpine
- IfcSegment
- IfcShellBasedSurfaceModel
- IfcSolidModel
- IfcSurface
- IfcTextLiteral
- IfcVector
8.8.3.49.3 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 | |||
| IfcVoxelGrid (7) | |||
| 1 | VoxelSizeX | IfcNonNegativeLengthMeasure |
Size of voxels in the X axis. |
| 2 | VoxelSizeY | IfcNonNegativeLengthMeasure |
Size of voxels in the Y axis. |
| 3 | VoxelSizeZ | IfcNonNegativeLengthMeasure |
Size of voxels in the Z axis. |
| 4 | NumberOfVoxelsX | IfcPositiveInteger |
Number of voxels along the X axis. |
| 5 | NumberOfVoxelsY | IfcPositiveInteger |
Number of voxels along the Y axis. |
| 6 | NumberOfVoxelsZ | IfcPositiveInteger |
NumberOf voxels along the Z axis. |
| 7 | Voxels | ARRAY [1:?] OF IfcBoolean |
Indication of voxels on the grid. The array is one-dimensional where values are distributed in the following order: along X, then Y and finally Z. |
8.8.3.49.4 Formal representation
ENTITY IfcVoxelGrid
SUBTYPE OF (IfcTessellatedItem);
VoxelSizeX : IfcNonNegativeLengthMeasure;
VoxelSizeY : IfcNonNegativeLengthMeasure;
VoxelSizeZ : IfcNonNegativeLengthMeasure;
NumberOfVoxelsX : IfcPositiveInteger;
NumberOfVoxelsY : IfcPositiveInteger;
NumberOfVoxelsZ : IfcPositiveInteger;
Voxels : ARRAY [1:?] OF IfcBoolean;
END_ENTITY;