IfcPresentationLayerAssignment

Definition from ISO/CD 10303-46:1992: The presentation layer assignment entity assigns an identifying name and optionally a description to a set of presentation and representation items.

Definition from IAI: The presentation layer assignment provides the layer name (and optionally a description) for a collection of (styled or unstyled) representation items. Visibility and access control and layer style assignment (colour, line style, line width) is handled by the subtype IfcPresentationLayerAssignmentWithStyle.

> NOTE: Corresponding STEP name: presentation layer assignment. Please refer to ISO/IS 10303-46:1994, p. 36 for the final definition of the formal standard.

> HISTORY: New entity in Release IFC2x 2nd Edition.

EXPRESS specification:

ENTITY IfcPresentationLayerAssignment
SUPERTYPE OF | (IfcPresentationLayerWithStyle);
Name | : | IfcLabel;
Description | : | OPTIONAL IfcText;
AssignedItems | : | SET [1:?] OF IfcLayeredItem;
Identifier | : | OPTIONAL IfcIdentifier;
END_ENTITY;

Attribute definitions:

Name | : | Name of the layer.
Description | : | Additional description of the layer.
AssignedItems | : | The set of layered items, which are assigned to this layer.
Identifier | : | An (internal) identifier assigned to the layer.

Inheritance graph

ENTITY IfcPresentationLayerAssignment;
ENTITY IfcPresentationLayerAssignment;
Name | : | IfcLabel;
Description | : | OPTIONAL IfcText;
AssignedItems | : | SET [1:?] OF IfcLayeredItem;
Identifier | : | OPTIONAL IfcIdentifier;
END_ENTITY;