Table 6.87 — DRM_Feature_Volume_Shell

Property

Description

Class

  • <DRM Feature Volume Shell>

Superclass

Subclass

  • None.

Definition

An instance of this DRM class represents the one-directional topological relationship from a <DRM Feature Volume> to the collection of two or more <DRM Feature Face> instances that define one of its boundaries (external or internal).

Class diagram

Figure 6.100 — DRM_Feature_Volume_Shell

Inherited field elements

Field name

Range

Field data type

None

   

Field elements

Field name

Range

Field data type

universal1

 

Boolean

Associated to (one-way) (inherited)

  • None.

Associated to (one-way)

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 metadata) (inherited)

  • None.

Composed of (two-way metadata)

  • None.

Component of (two-way) (inherited)

  • None.

Component of (two-way)

Constraints

Clarifications

1 This indicates that the given <DRM Feature Volume> instance is the universal <DRM Feature Volume> instance. Within a 3D tile that has feature topology level 5, the universal <DRM Feature Volume> instance lies “outside” any other volumes. Since the external boundary of the universal <DRM Feature Volume> instance is at infinity, a <DRM Feature Volume> instance that has this field set to TRUE has no external <DRM Feature Volume Shell> instance.

Example(s)