Note: There is a newer version of this specification see VEC 2.1.0

An OccurrenceOrUsageViewItem3D specifies the existence and representation of an OccurrenceOrUsage in a 3D-model.

The definition of the existence is necessary because a 150% model of a harness might contain different geometric variants and not all of them must be represented in the same BuildingBlockSpecification3D.

There are two different cases for the representation of OccurrenceOrUsages in a 3D model. There are components that can be represented explicitly by a 3D model of the component (e.g. connectors, cable ducts, fixings) and there are components that are represented implicitly by a generic visualization and their placement on the topology (e.g. tapes, tubes). If an OccurrenceOrUsage has a 3D model and it shall be placed explicitly in 3D space, the OccurrenceOrUsageViewItem3D defines a Transformation3D in the orientation role. If no orientation is defined the OccurrenceOrUsage is represented implicitly.

General Information

Attribute Value
Owner geo_3d
Applied Stereotype
Base Classifier ExtendableElement
Is Abstract false
Derived Classifiers


Name Type Mult. Description Owning Classifier
identification String 1

Specifies a unique identification of the OccurrenceOrUsageViewItem. The identification is guaranteed to be unique within the BuildingBlockSpecification3D.

aliasId AliasIdentification 0..*

Specifies additional identifiers for the OccurrenceOrUsageViewItem3D.


Outgoing Relations

Other End This End General
Role Type Mult. Agg. Unique Ordered Mult. Description
occurrenceOrUsage OccurrenceOrUsage 0..* N Y N 0..*

Specifies the OccurrenceOrUsages which are represented by the view item.

Important: To use one OccurenceOrUsageViewItem for multiple OccurrenceOrUsages is only valid, if the referenced items are true alternatives to each other. That means, they must have an identical placement, the geometrical models used for each item must be substitutable and the item must be mutually exclusive to each other.

orientation Transformation3D 0..1 Y Y N 0..1 Specifies the orientation of the view item.

Incoming Relations

This End Other End General
Role Mult. Agg. Unique Ordered Type Mult. Description
placedElementViewItem3D 0..* Y Y N BuildingBlockSpecification3D 1 Specifies the view items for OccurrenceOrUsages in a BuildingBlockSpecification3D.