ISO/IEC 18023-1:200x(E) — Table 6.145 DRM_LSR_3D_Location_Control

Table 6.145 — DRM_LSR_3D_Location_Control_Link

Property

Description

Class

<DRM LSR 3D Location Control Link>

Superclass

<DRM Control Link>

Subclass

None.

Definition

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

Class diagram

Figure 6.168 — DRM_LSR_3D_Location_Control_Link

Inherited field elements

Field name	Range	Field data type
description ¹		String

Field elements

Field name	Range	Field data type
u_expr_index ²		Integer_Unsigned
v_expr_index ³		Integer_Unsigned
w_expr_index ⁴		Integer_Unsigned

Associated to (one-way) (inherited)

None.

Associated to (one-way)

None.

Associated by (one-way) (inherited)

None.

Associated by (one-way)

None.

Associated with (two-way) (inherited)

None.

Associated with (two-way)

None.

Composed of (two-way) (inherited)

one or more {ordered} <DRM Expression> instances

Composed of (two-way metadata) (inherited)

None.

Composed of (two-way metadata)

None.

Component of (two-way) (inherited)

None.

Component of (two-way)

one or more <DRM LSR 3D Location> instances

Constraints

Publishable Object

Clarifications

¹ This is a text description of the given <DRM Control Link> instance's purpose.

² This index identifies a component <DRM Expression>, the value of which specifies that of the coordinate. u field of the affected <DRM LSR 3D Location> instances.

If this index is 0, the coordinate. u field is not controlled.

³ This index identifies a component <DRM Expression>, the value of which specifies that of the coordinate. v field of the affected <DRM LSR 3D Location> instances.

If this index is 0, the coordinate. v field is not controlled.

⁴ This index identifies a component <DRM Expression>, the value of which specifies that of the coordinate. w field of the affected <DRM LSR 3D Location> instances.

If this index is 0, the coordinate. w field is not controlled.

Example(s)

Consider a building <DRM Model> that may be instanced 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 <DRM Vertex> at the base of a wall <DRM Polygon> can be adjusted by using an <DRM LSR 3D Location Control Link> aggregated by the <DRM LSR 3D Location> that specifies the <DRM Vertex>'s location. Each <DRM LSR 3D Location Control Link> would itself aggregate a <DRM Variable>, which would specify the new location value. These <DRM Variables> shall be set separately for each instance to match the terrain upon which the instance is positioned. This calls for the <DRM Variables> to be set from outside the building <DRM Model>, so all of these <DRM Variables> in the building <DRM Model> shall be associated with the <DRM Model>'s <DRM Interface Template>.
See also <DRM Interface Template>, <DRM Model Instance Template Index>.