Class TIfcMaterialProfileSet

Unit

Declaration

type TIfcMaterialProfileSet = class(TIfcMaterialDefinition)

Description

Designation by which individual material(s) of a prismatic element (for example, beam or column) constructed of a single or multiple material profiles is known.

Spec: https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/HTML/lexical/IfcMaterialProfileSet.htm

Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 5512).

Hierarchy

Show Additional Members:

Overview

Methods

Protected function WantsGlobalId: Boolean; virtual;
Protected class function IfcClassName: String; virtual;
Public constructor Create(AOwner: TComponent); override;
Public destructor Destroy; override;

Properties

Published property GlobalId: String read FGlobalId write FGlobalId;
Published property AssociatedTo: TIfcRelAssociatesMaterialList read FAssociatedTo;
Published property HasExternalReferences: TIfcExternalReferenceRelationshipList read FHasExternalReferences;
Published property HasProperties: TIfcMaterialPropertiesList read FHasProperties;
Published property Name: TIfcLabel read FName write FName;
Published property Description: TIfcText read FDescription write FDescription;
Published property MaterialProfiles: TIfcMaterialProfileList read FMaterialProfiles;
Published property CompositeProfile: TIfcCompositeProfileDef read FCompositeProfile write FCompositeProfile;

Description

Methods

Protected function WantsGlobalId: Boolean; virtual;

This item is declared in ancestor TIfcPersistent.

If True, instances of this class will have GlobalId auto-assigned at saving, and they will be saved as part of the "data" list in IFC JSON files.

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 WantsGlobalId = True to save some files.

Source: scene/load/ifc/castleifc_ifc_types.inc (line 52).

Protected class function IfcClassName: String; virtual;

This item is declared in ancestor TIfcPersistent.

Name for the IFC standard, used in IFC files. By default, this is just ClassName with prefix 'T' removed.

Source: scene/load/ifc/castleifc_ifc_types.inc (line 56).

Public constructor Create(AOwner: TComponent); override;

This item has no description.

Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 5519).

Public destructor Destroy; override;

This item has no description.

Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 5520).

Properties

Published property GlobalId: String read FGlobalId write FGlobalId;

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).

Published property AssociatedTo: TIfcRelAssociatesMaterialList read FAssociatedTo;

This item is declared in ancestor TIfcMaterialDefinition.

Use of the IfcMaterialDefinition subtypes within the material association of an element occurrence or element type.

Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 5456).

Published property HasExternalReferences: TIfcExternalReferenceRelationshipList read FHasExternalReferences;

This item is declared in ancestor TIfcMaterialDefinition.

Reference to external references, e.g. library, classification, or document information, that are associated to the material.

Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 5460).

Published property HasProperties: TIfcMaterialPropertiesList read FHasProperties;

This item is declared in ancestor TIfcMaterialDefinition.

Material properties assigned to instances of subtypes of IfcMaterialDefinition.

Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 5463).

Published property Name: TIfcLabel read FName write FName;

The name by which the material profile set is known.

Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 5523).

Published property Description: TIfcText read FDescription write FDescription;

Definition of the material profile set in descriptive terms.

Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 5526).

Published property MaterialProfiles: TIfcMaterialProfileList read FMaterialProfiles;

Identification of the profiles from which the material profile set is composed.

Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 5529).

Published property CompositeProfile: TIfcCompositeProfileDef read FCompositeProfile write FCompositeProfile;

Reference to the composite profile definition for which this material profile set associates material to each of its individual profiles. If only a single material profile is used (the most typical case) then no CompositeProfile is asserted.

Source: scene/load/ifc/castleifc_ifc_standard_types.inc (line 5535).


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