ISO/IEC 18023-1:200x(E) — Table 6.133 DRM

Table 6.133 — DRM_Line

Property

Description

Class

<DRM Line>

Superclass

<DRM Linear Geometry>

Subclass

None.

Definition

An instance of this DRM class specifies a sequence of connected line segments, each implicitly specified between the i, i+1 pair of <DRM Vertex> components.

Clarifications

¹ A <DRM Primitive Geometry> instance contains a <DRM Union Of Primitive Geometry> instance as a component only when that <DRM Primitive Geometry> instance can be decomposed into nested <DRM Primitive Geometry> instances.

EXAMPLE A <DRM Polygon> instance can be decomposed into subfaces.

Class diagram

Figure 6.153 — DRM_Line

Inherited field elements

Field name	Range	Field data type
count		Short_Integer_Unsigned
suppress_last		Boolean

Field elements

Field name	Range	Field data type
None

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)

zero or more {ordered} <DRM Geometry Edge> instances, each with a <DRM Edge Direction> link object

Associated with (two-way)

None.

Composed of (two-way) (inherited)

zero or one <DRM Classification Data> instance
zero or more {ordered} <DRM Property Set Index> instances
zero or more <DRM Property Table> instances
zero or more <DRM Property Table Reference> instances
zero or more <DRM Property Value> instances
zero or more <DRM Colour> instances
zero or more {ordered} <DRM Image Mapping Function> instances
zero or one <DRM Light Rendering Properties> instance
zero or one <DRM Presentation Domain> instance
zero or one <DRM Rendering Priority Level> instance
zero or one <DRM Rendering Properties> instance
zero or more <DRM Tack Point> instances
zero or one <DRM Union Of Primitive Geometry> instance¹

Composed of (two-way)

zero or more {ordered} <DRM Reference Vector> instances
2 or more {ordered} <DRM Vertex> instances

Composed of (two-way metadata) (inherited)

zero or one <DRM Time Constraints Data> instance

Composed of (two-way metadata)

None.

Component of (two-way) (inherited)

zero or more <DRM Union Of Primitive Geometry> instances

Component of (two-way)

None.

Constraints

Example(s)

Consider a <DRM Line> instance L representing a string of 30 evenly spaced lights along one side of a runway.
To specify what L represents, it has a qualified <DRM Classification Data> component C with tag = ECC_AERODROME_LIGHTING, where C has a <DRM Property Value> component with
meaning = { ATTRIBUTE, {EAC_AERONAUTICAL_LIGHT_TYPE}}
value = { ENUMERATION, { EEC_AEROLGTTY_RUNWAY }}.
L also has a <DRM Light Rendering Properties> component with an appropriate <DRM Flashing Light Behaviour>. L’s own field values are count = 30 and suppress_last = FALSE, so that L is rendered as a string of 30 evenly spaced flashing lights.