Class

• <DRM Rotation Control Link>

Superclass

• <DRM Control Link>

Subclass

• None.

Definition

An instance of this DRM class is a specialized <DRM Control Link> instance used to provide the connection between an ordered aggregation of <DRM Expression> instances and the target fields of one or more <DRM Rotation> instances.

The expression_index field specifies which <DRM Expression> component specifies the angle field value of the affected <DRM Rotation> instances, by specifying a 1-based index into the ordered aggregation of <DRM Expression> instances.

The lower_expression_index field specifies which <DRM Expression> component, if any, defines the lower limit of the angle field value of the affected <DRM Rotation> instances. A value of zero (0) indicates that no lower limit is specified; otherwise, the value specifies a 1-based index into the ordered aggregation of <DRM Expression> instances.

The upper_expression_index field specifies which <DRM Expression> component, if any, defines the upper limit of the angle field value of the affected <DRM Rotation> instances. A value of zero (0) indicates that no upper limit is specified; otherwise, the value specifies a 1-based index into the ordered aggregation of <DRM Expression> instances.

Class diagram

Figure 6.273 — DRM_Rotation_Control_Link

Constraints

• Publishable Object

Example(s)

• A <DRM Model> instance of a weather vane has a <DRM Geometry Model> instance with a <DRM Union Of Geometry Hierarchy> component, to which is attached an <DRM LSR Transformation> instance with a <DRM Rotation> instance, indicating that the weather vane can turn to match the direction that the wind is blowing. The <DRM Rotation> instance has a <DRM Rotation Control Link> instance that changes the angle of rotation to match the wind direction.

• See <DRM Property Table Reference Control Link>, example 1.