ISO/IEC 18023-1:200x(E) — Table 6.265 DRM_State_Related

Table 6.265 — DRM_State_Related_Features

Property

Description

Class

<DRM State Related Features>

Superclass

<DRM Aggregate Feature>

Subclass

None.

Definition

An instance of this DRM class specifies a state related organization of <DRM Feature Hierarchy> components where each <DRM Feature Hierarchy> component represents a separate discrete state from a possibly continuous state value. Each discrete state corresponds to a branch of the <DRM State Related Features> instance and is identified by the <DRM State Data> link object for that branch. The state value itself is specified by the state_tag of the <DRM State Related Features> instance.

The state_tag field specifies the state by which the <DRM Feature Hierarchy> components are being differentiated and shall specify an EAC that qualifies as state applicable (see 4.13.12 State).

The active_state_value field specifies the default state. If the <DRM State Related Features> instance has a <DRM State Control Link> component, the value of the active_state_value field is obtained from that <DRM State Control Link> instance.

Class diagram

Figure 6.328 — DRM_State_Related_Features

Inherited field elements

Field name	Range	Field data type
unique_descendants		Boolean
strict_organizing_principle		Boolean

Field elements

Field name	Range	Field data type
state_tag		EDCS_Attribute_Code
active_state_value		EDCS_Attribute_Value

Default field values

Default field values for DRM_State_Related_Features

Associated to (one-way) (inherited)

zero or more <DRM Feature Representation> instances, each through the use of a <DRM Base Association Data> link object¹
zero or more <DRM Geometry Hierarchy> instances, each through the use of a <DRM Base Association Data> link object²
zero or more <DRM Property Grid> instances, each through the use of a <DRM Base Association Data> link object³

Associated to (one-way)

None.

Associated by (one-way) (inherited)

zero or more <DRM Feature Representation> instances, each through the use of a <DRM Base Association Data> link object⁴
zero or more <DRM Geometry Hierarchy> instances, each through the use of a <DRM Base Association Data> link object⁵
zero or more <DRM Property Grid> instances, each through the use of a <DRM Base Association Data> link object⁶
zero or one <DRM Hierarchy Summary Item> instance

Associated by (one-way)

None.

Associated with (two-way) (inherited)

None.

Associated with (two-way)

None.

Composed of (two-way) (inherited)

zero or one <DRM Classification Data> instance
zero or more <DRM Label> instances
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 one <DRM Rendering Priority Level> instance
zero or one <DRM Reference Surface> instance
zero or more <DRM Sound Instance> instances
zero or more <DRM Base LOD Data> instances
zero or more <DRM Colour> instances
zero or more <DRM Feature Topology Hierarchy> instances
zero or more {ordered} <DRM Image Mapping Function> instances⁷
zero or one <DRM Perimeter Data> instance
zero or one <DRM Presentation Domain> instance⁸
zero or more <DRM Property Description> instances
zero or one <DRM Spatial Extent> instance

Composed of (two-way)

one or more <DRM Feature Hierarchy> instances, each through the use of a <DRM State Data> link object
zero or one <DRM State Control Link> instance

Composed of (two-way metadata) (inherited)

zero or one <DRM Data Quality> instance
zero or one <DRM Identification> instance
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 Features> instances
zero or more <DRM Alternate Hierarchy Related Features> instances, each through the use of a <DRM Hierarchy Data> link object
zero or more <DRM Classification Related Features> instances, each through the use of a <DRM Classification Data> link object
zero or one <DRM Environment Root> instance
zero or one <DRM Feature Model> instance
zero or more <DRM LOD Related Features> instances, each through the use of a <DRM Base LOD Data> link object
zero or more <DRM Octant Related Features> instances, each through the use of a <DRM Octant Data> link object
zero or more <DRM Perimeter Related Features> instances, each through the use of a <DRM Perimeter Data> link object
zero or more <DRM Quadrant Related Features> instances, each through the use of a <DRM Quadrant Data> link object
zero or more <DRM Spatial Index Related Features> instances, each through the use of a <DRM Spatial Index Data> link object
zero or more <DRM State Related Features> instances, each through the use of a <DRM State Data> link object
zero or more <DRM Time Related Features> instances, each through the use of a <DRM Time Constraints Data> link object

Component of (two-way)

None.

Constraints

Clarifications

¹An association between two <DRM Feature Representation> instances indicates that the environmental object(s) that they represent have the semantic relationship indicated by the <DRM Base Association Data> link object on the association relationship.

²An association between a <DRM Geometry Hierarchy> instance and a <DRM Feature Representation> instance indicates that the environmental object(s) that they represent have the semantic relationship indicated by the <DRM Base Association Data> link object on the association relationship.

³An association between a <DRM Property Grid> instance and a <DRM Feature Representation> instance indicates that the environmental object(s) represented by the <DRM Feature Representation> instance and the <DRM Property Grid> instance (or some specific cell data within that <DRM Property Grid> instance) have the semantic relationship indicated by the <DRM Base Association Data> link object on the association relationship. Each associated <DRM Property Grid> instance indicates whether the entire <DRM Property Grid> instance or only some specific cell data within it is participating in the relationship in question.

⁴An association between two <DRM Feature Representation> instances indicates that the environmental object(s) that they represent have the semantic relationship indicated by the <DRM Base Association Data> link object on the association relationship.

⁵An association between a <DRM Geometry Hierarchy> instance and a <DRM Feature Representation> instance indicates that the environmental object(s) that they represent have the semantic relationship indicated by the <DRM Base Association Data> link object on the association relationship.

⁶An association between a <DRM Property Grid> instance and a <DRM Feature Representation> instance indicates that the environmental object(s) represented by the <DRM Feature Representation> instance and the <DRM Property Grid> instance (or some specific cell data within that <DRM Property Grid> instance) have the semantic relationship indicated by the <DRM Base Association Data> link object on the association relationship. Each associated <DRM Property Grid> instance indicates whether the entire <DRM Property Grid> instance or only some specific cell data within it is participating in the relationship in question.

⁷The <DRM Image Mapping Function> components support texture mapping information for geometry that is to be derived from the <DRM Aggregate Feature> instance by the consumer. These <DRM Image Mapping Function> instances shall use <DRM Image Anchor> components to specify the mapping.

⁸A <DRM Presentation Domain> component is needed for <DRM Aggregate Feature> instances that are significant only for a particular domain, such as radar.

Example(s)

Consider a <DRM Feature Model> instance representing a road in various states of damage due to flooding. The topological connections of the road differ in each damage state due to bridges being washed away and various road segments being blocked due to obstructions such as fallen trees.
Consequently, the <DRM Feature Model> instance has a <DRM State Related Features> component with state_tag = EAC_GENERAL_DAMAGE_FRACTION and active_state_value = 0,0 % (that is, initially the road is undamaged, before flooding takes place). This is depicted in Figure 6.329.

Figure 6.329 — <DRM State Related Features> damage example

The <DRM State Data> link object for each branch indicates the range of percent damage for which that branch describes the feature topology of the road.
If the active_state_value is controlled dynamically, the mismatch_behaviour field of the <DRM State Control Link> instance specifies what happens if the active_state_value is greater than 50%.