Table 6.66 — DRM_Environment_Root
Property |
Description |
||||||
---|---|---|---|---|---|---|---|
Class |
|
||||||
Superclass |
|||||||
Subclass |
|
||||||
Definition |
An instance of this DRM class is the aggregating object for the <DRM Feature Hierarchy> instance and/or <DRM Geometry Hierarchy> instance that represent the instantiation of a collection of all data in a common SRF in a given transmittal. A <DRM Environment Root> instance is the starting point for all DRM objects in the same SRF in a transmittal. The srf_context_info field specifies the SRF within which all content of the <DRM Environment Root> instance is defined. |
||||||
Class diagram |
|||||||
Inherited field elements |
|
||||||
Field elements |
|
||||||
Default field values |
|||||||
Associated to (one-way) (inherited) |
|
||||||
Associated to (one-way) |
|
||||||
Associated by (one-way) (inherited) |
|
||||||
Associated by (one-way) |
|
||||||
Associated with (two-way) (inherited) |
|
||||||
Associated with (two-way) |
|
||||||
Composed of (two-way) (inherited) |
|
||||||
Composed of (two-way) |
|
||||||
Composed of (two-way metadata) (inherited) |
|
||||||
Composed of (two-way metadata) |
|
||||||
Component of (two-way) (inherited) |
|
||||||
Component of (two-way) |
|
||||||
Constraints |
|||||||
Clarifications |
1These <DRM Base Time Data> components are present only if they differ from the <DRM Base Time Data> components of the <DRM Transmittal Root> aggregate of the <DRM Environment Root> instance. 2The presence of these components depends on the <DRM Feature Hierarchy> component and <DRM Geometry Hierarchy> component. See 7.2.40 Hierarchy summary constraints for details. 3If present, the <DRM Interface Template> component provides access to all <DRM Variable> instances defined within the scope of the <DRM Environment Root> instance, if any. If there are such <DRM Variable> instances, a <DRM Interface Template> component shall be present; otherwise, it shall not be present. 4The <DRM Spatial Extent> component specifies the spatial extent of the <DRM Environment Root> instance, defining the maximum spatial extents of the component objects. |
||||||
Example(s) |
|