IfcDimensionCount
Definition from ISO/CD 10303-42:1992: A dimension count is a
positive integer used to define the coordinate space dimensionality. Definition from IAI: The IfcDimensionCount is restricted
to have the dimensionality of either 1, 2, or 3 - the WR1 had been added as an
addition to the STEP P42 entity dimension_count. In contrary to the STEP P42
constraint, that all geometric representation items within a geometric
representation context are forced to have the same dimension count, the IFC
geometry allows mixed dimensions, particularly when defining the boundary of
planar surfaces. NOTE Corresponding STEP type:
dimension_count, please refer to ISO/IS 10303-42:1994, p. 14 for the final
definition of the formal standard.
HISTORY New Type in IFC Release
1.5
EXPRESS specification:
|
| WR1 | : | The dimension count should be an integer between 1 and 3 NOTE: This is a further constraint by IFC, the upper limit does not exist in STEP. |
| Name | Type | Referred through | Express-G | |
| IfcCartesianPoint | Entity |
|
Diagram 3 | |
| IfcCartesianTransformationOperator | Entity |
|
Diagram 4 | |
| IfcCompositeCurveSegment | Entity |
|
Diagram 6 | |
| IfcCurve | Entity |
|
Diagram 5 | |
| IfcCurveBoundedPlane | Entity |
|
Diagram 7 | |
| IfcDirection | Entity |
|
Diagram 3 | |
| IfcElementarySurface | Entity |
|
Diagram 7 | |
| IfcPlacement | Entity |
|
Diagram 3 | |
| IfcSweptSurface | Entity |
|
Diagram 8 | |
| IfcVector | Entity |
|
Diagram 2 |