Table 6.146—DRM_Internal_Feature_Face_Ring

Property

Description

Superclass

· <DRM Feature Face Ring>

Class

· <DRM Internal Feature Face Ring>

Subclass

· none

Definition

An object of this DRM class specifies the one-directional topological relationship between a <DRM Feature Face> and the ordered collection of one or more <DRM Feature Edge>s that define one of its inner boundaries (i.e., a "hole" within the <DRM Feature Face>).

Example(s)

· An island within a lake is represented by a <DRM Regular Feature Face>. The shoreline of the island is represented by a single Feature Edge, and the lake is represented by another <DRM Regular Feature Face>. The <DRM Feature Edge> that defines the shoreline of the island is the sole component of a <DRM Internal Feature Face Ring> component of the <DRM Regular Feature Face> that represents the lake. The <DRM Edge Direction> associated with each <DRM Feature Edge> indicates its orientation with respect to the <DRM Internal Feature Face Ring>.

Inherited field elements

field_name	range	Field_Data_Type
none

Field elements

field_name	range	Field_Data_Type
none

Associated to (one-way) (inherited)

· one or more {ordered} <DRM Feature Edge>s through <DRM Edge Direction>s

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)

· none

Composed of (two-way)

· none

Composed of (two-way metadata) (inherited)

· none

Composed of (two-way metadata)

· none

Component of (two-way) (inherited)

· none

Component of (two-way)

· none

Constraints

· Feature_Ring edge consistency

Notes

none

Class diagram

<DRM Internal Feature Face Ring>