Class TIfcTriangulatedIrregularNetwork

This item is declared in ancestor TIfcPersistent.

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).

This item is declared in ancestor TIfcTessellatedItem.

Assignment of the representation item to a single or multiple layer(s).

Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 541).

This item is declared in ancestor TIfcTessellatedItem.

Reference to the IfcStyledItem that provides presentation information to the representation, e.g. a curve style, including colour and thickness to a geometric curve.

Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 547).

This item is declared in ancestor TIfcTessellatedFaceSet.

Ordered list of Cartesian points.

Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 835).

This item is declared in ancestor TIfcTessellatedFaceSet.

Reference to the indexed colour map providing the corresponding colour RGB values to the faces.

Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 839).

This item is declared in ancestor TIfcTessellatedFaceSet.

Reference to the indexed texture map providing the corresponding texture coordinates to the vertices.

Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 843).

This item is declared in ancestor TIfcTriangulatedFaceSet.

Ordered list of three directions for normals.

Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 901).

This item is declared in ancestor TIfcTriangulatedFaceSet.

Indication whether the face set is a closed shell (True) or an open shell (False).

IFC spec says: If omitted no such information can be asserted. For our implementation, "no such information can be asserted" means it shall be treated as an open shell, so the default is just False, we don't introduce a 3rd state.

Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 910).

This item is declared in ancestor TIfcTriangulatedFaceSet.

List of indices for the vertices of the triangles.

Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 913).

This item is declared in ancestor TIfcTriangulatedFaceSet.

The list of integers defining the locations in the TIfcCartesianPointList3D to obtain the point coordinates for the indices withint the CoordIndex. If the PnIndex is not provided the indices point directly into the TIfcCartesianPointList3D.

Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 919).