Class Name: LSR 3D Location Control Link

Superclass - <Control Link>

Subclasses

Definition

An instance of this DRM class is a specialized <Control Link> instance used to provide the connection between an ordered aggregation of <Expression> instances and the target fields of the <LSR 3D Location> instances that aggregate it.

Primary Page in DRM Diagram:

• 17

Secondary Pages in DRM Diagram:

• 15

Example

1. Consider a building <Model> instance that may be referenced on terrain polygons that are at various different orientations. Each building wall shall meet the terrain, leaving no gaps. This means that the lengths of the building's walls shall be adjusted by different amounts in each instance to match the slope of the ground.

   The location of each <Vertex> instance at the base of a <Polygon> instance representing a wall can be adjusted by using an <LSR 3D Location Control Link> component of the <LSR 3D Location> instance that specifies the <Vertex> instance's location. Each <LSR 3D Location Control Link> instance itself has a <Variable> component, which specifies the new location value. These <Variable> instances shall be set separately for each instance to match the terrain upon which the instance is positioned. This calls for the <Variable> instances to be set from outside the building <Model> instance, so all of these <Variable> instances in the building <Model> instance shall be associated with the <Model> instance's <Interface Template> component.

2. See also <Interface Template>, <Model Instance Template Index>.

FAQs

No FAQs supplied.

Constraints

• <<Publishable Object>>

Composed of (two-way) (inherited)

• one or more {ordered} <Expression> instances

Component of (two-way)

• one or more <LSR 3D Location> instances

Inherited Field Elements

Field Elements

Notes

Fields Notes

description

The description field specifies a text description of the purpose of the <Control Link> instance.

u_expr_index

The u_expr_index field is a one-based index into the ordered aggregation of <Expression> instances and is used to select the specific <Expression> instance (if any) that controls the u field values of the coordinate field(s) of the target <LSR 3D Location> instances. If the value is zero, the u field of those <LSR 3D Location> instance(s) is not controlled.

v_expr_index

The v_expr_index field is a one-based index into the ordered aggregation of <Expression> instances and is used to select the specific <Expression> instance (if any) that controls the v field values of the coordinate field(s) of the target <LSR 3D Location> instances. If the value is zero, the v field of those <LSR 3D Location> instance(s) is not controlled.

w_expr_index

The w_expr_index field is a one-based index into the ordered aggregation of <Expression> instances and is used to select the specific <Expression> instance (if any) that controls the w field values of the coordinate field(s) of the target <LSR 3D Location> instances. If the value is zero, the w field of those <LSR 3D Location> instance(s) is not controlled.