Class TIfcRelDeclares
Unit
Declaration
type TIfcRelDeclares = class(TIfcRelationship)
Description
Declaration of objects (subtypes of IfcObject) or properties (subtypes of IfcPropertyDefinition) to a project or project library (represented by IfcProject, or IfcProjectLibrary).
Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 1796).
Hierarchy
- TObject
- TPersistent
- TComponent
- TIfcPersistent
- TIfcRoot
- TIfcRelationship
- TIfcRelDeclares
Overview
Methods
| Protected | function WantsGlobalId: Boolean; virtual; |
| Protected | class function IfcClassName: String; virtual; |
| Protected | function WantsGlobalId: Boolean; override; |
| Public | constructor Create(AOwner: TComponent); override; |
| Public | destructor Destroy; override; |
Properties
| Published | property GlobalId: String read FGlobalId write FGlobalId; |
| Published | property OwnerHistory: TIfcOwnerHistory read FOwnerHistory write FOwnerHistory; |
| Published | property Name: TIfcLabel read FName write FName; |
| Published | property Description: TIfcText read FDescription write FDescription; |
| Published | property RelatingContext: TIfcContext read FRelatingContext write FRelatingContext; |
| Published | property RelatedDefinitions: TIfcDefinitionSelectList read FRelatedDefinitions; |
Description
Methods
| Protected | function WantsGlobalId: Boolean; virtual; |
|
If Strictly following the spec, this should be only defined for TIfcRoot, because only IfcRoot has GlobalId. In reality, we need GlobalId at TIfcPersistent to load some files, and we sometimes need | |
| Protected | class function IfcClassName: String; virtual; |
|
Name for the IFC standard, used in IFC files. By default, this is just ClassName with prefix 'T' removed. | |
| Protected | function WantsGlobalId: Boolean; override; |
|
This item has no description. Showing description inherited from TIfcPersistent.WantsGlobalId.
If Strictly following the spec, this should be only defined for TIfcRoot, because only IfcRoot has GlobalId. In reality, we need GlobalId at TIfcPersistent to load some files, and we sometimes need Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 1656). | |
| Public | constructor Create(AOwner: TComponent); override; |
|
This item has no description. Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 1801). | |
| Public | destructor Destroy; override; |
|
This item has no description. Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 1802). | |
Properties
| Published | property GlobalId: String read FGlobalId write FGlobalId; |
|
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 IFC JSON documentation says this, which seems to (unfortunately it is not unambiguous enough...) allow this at any IFC class: "Whereas the | |
| Published | property OwnerHistory: TIfcOwnerHistory read FOwnerHistory write FOwnerHistory; |
|
Information about the current ownership of that object. Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 1659). | |
| Published | property Name: TIfcLabel read FName write FName; |
|
This item has no description. Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 1661). | |
| Published | property Description: TIfcText read FDescription write FDescription; |
|
This item has no description. Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 1662). | |
| Published | property RelatingContext: TIfcContext read FRelatingContext write FRelatingContext; |
|
Reference to the IfcProject to which additional information is assigned. Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 1805). | |
| Published | property RelatedDefinitions: TIfcDefinitionSelectList read FRelatedDefinitions; |
|
Set of object or property definitions that are assigned to a context and to which the unit and representation context definitions of that context apply. Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 1810). | |
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