Class Name: Rotation Control Link

Superclass - Control Link

Definition

The specialized Control Link used to provide the connection between an ordered aggregation of Expressions and the target fields of a Rotation.

The expr_index field is a 1-based index into the ordered aggregation of Expressions, and is used to select the specific Expression that defines Rotation's angle field.

The lower_expr_index field is a 1-based index into the ordered aggregation of Expressions, and is used to select the specific Expression that defines the lower limit for Rotation's angle.

The upper_expr_index field is a 1-based index into the ordered aggregation of Expressions, and is used to select the specific Expression that defines the upper limit for Rotation's angle.

Primary Page in DRM Diagram:

• 17

Secondary Pages in DRM Diagram:

• 7

Example

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

FAQs

Constraints

Composed of (two-way)(inherited)

• one or more {ordered} Expressions

Component of (two-way)

• one or more Rotations

Inherited Field Elements

Field Elements

Notes

Fields Notes

description

 A text description of what the Control_Link is for

expr_index

 index of the expression whose value controls
 the angle field of the affected <Rotation>

lower_index

 index of the expression defining the lower limit of the rotation
 angle.  an lower_index value of 0 means no lower limit was defined.

upper_index

 index of the expression defining the upper limit of the rotation
 angle.  an upper_index value of 0 means no upper limit was defined.