8.12.3.11 IfcExternallyDefinedHatchStyle
8.12.3.11.1 Semantic definition
Definition according to ISO/CD 10303-46:1992 The externally defined hatch style is an entity which makes an external reference to a hatching style. The allowable values for the name source and item reference, by which the externally defined hatch style is identified, need to be determined by implementer agreements. Corresponding ISO 10303 name: fill_style_select. Please refer to ISO/IS 10303-46:1994 for the final definition of the formal standard. New entity in IFC2x2.8.12.3.11.2 Entity inheritance
8.12.3.11.3 Attributes
| # | Attribute | Type | Description |
|---|---|---|---|
| IfcExternalReference (4) | |||
| 1 | Location | OPTIONAL IfcURIReference |
Location, where the external source (classification, document or library) can be accessed by electronic means. The electronic location is provided as an URI, and would normally be given as an URL location string. The data type has been changed from IfcLabel to IfcURIReference . |
| 2 | Identification | OPTIONAL IfcIdentifier |
The Identification provides a unique identifier of the referenced item within the external source (classification, document or library). It may be provided as * a key, e.g. a classification notation, like NF2.3 * a handle * a uuid or guid It may be human readable (such as a key) or not (such as a handle or uuid) depending on the context of its usage (which has to be determined by local agreement). Attribute renamed from ItemReference for consistency. |
| 3 | Name | OPTIONAL IfcLabel |
Optional name to further specify the reference. It can provide a human readable identifier (which does not necessarily need to have a counterpart in the internal structure of the document). |
| ExternalReferenceForResources | SET [0:?] OF IfcExternalReferenceRelationship FOR RelatingReference |
Reference to all associations between this external reference and objects within the IfcResourceObjectSelect that are tagged by the external reference. New inverse attribute added with upward compatibility. |
|
8.12.3.11.4 Formal representation
ENTITY IfcExternallyDefinedHatchStyle
SUBTYPE OF (IfcExternalReference);
END_ENTITY;