Class TIfcSlabType

Add given TIfcObjectDefinition instance to the IsDecomposedBy list of this object. Adds also new intermediate TIfcRelAggregates instance.

This shall be used to add top-level IfcSpatialStructureElement instances to the project, e.g.:

• TIfcSite instance inside IfcProject,

• IfcBuilding instance inside TIfcSite,

• IfcBuildingStorey instance inside IfcBuilding

See also

TIfcSpatialElement.AddContainedElement

Add given Element (TIfcElement, descendant of TIfcProduct) to the ContainsElements list of this spatial element.

Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 1873).

Globally unique identifier for the object instance.

Note: Not declared as TGUID, because TGUID cannot be published, but also we don't really need it: for our purposes, this identifier is just an arbitrary string.

Note: IFC 4.3 specification puts this only at IfcRoot, not at every IFC class. But testcase https://github.com/buildingsmart-community/Community-Sample-Test-Files/blob/main/IFC%204.0.2.1%20(IFC%204)/ISO%20Spec%20archive/wall-with-opening-and-window.json (from IFC 4.0) shows this can be present at any IFC class, in particular TIfcGeometricRepresentationContext.

In fact, TIfcGeometricRepresentationContext needs to have GlobalId to be successfully saved (avoid recursively trying to serialize it) in some cases. We indicate such classes with WantsGlobalId.

IFC JSON documentation says this, which seems to (unfortunately it is not unambiguous enough...) allow this at any IFC class: "Whereas the globalId attribute is only available to those elements that are descendent of the IfcRoot entity in the EXPRESS schema, we encourage a broader use of this globalId, to enable referencing between objects in a JSON file when useful.".

Source: scene/load/ifc/castleifc_ifc_types.inc (line 79).

Information about the current ownership of that object.

Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 1659).

This item has no description.

Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 1661).

This item has no description.

Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 1662).

References to the context providing context information such as project unit or representation context. It should only be asserted for the uppermost non-spatial object.

Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 1847).

References to the decomposition relationship being an aggregation.

Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 1850).

References to the decomposition relationship being an aggregation.

Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 1853).

Reference to the relationship objects, that associates external references or other resource definitions to the object. Examples are the association to library, documentation or classification.

Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 1858).

Data type of the occurrence object, to which the assigned type object can relate.

Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 1993).

Set of unique property sets, that are associated with the object type and are common to all object occurrences referring to this object type.

Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 1997).

Reference to the relationship IfcRelDefinesByType and thus to those occurrence objects, which are defined by this type.

Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 2001).

List of unique representation maps. Each representation map describes a block definition of the shape of the product style. By providing more than one representation map, a multi-view block definition can be given.

Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 2234).

The tag (or label) identifier at the particular type of a product, e.g. the article number (like the EAN). It is the identifier at the specific level.

Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 2239).

The type denotes a particular type that indicates the object further. The use has to be established at the level of instantiable subtypes.

Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 2255).