Table 6.117—DRM_Geometry_Hierarchy

Property

Description

Superclass

·         <DRM Geometry>

Class

·         <DRM Geometry Hierarchy>

Subclass

·         <DRM Aggregate Geometry>

·         <DRM Property Grid Hook Point>

·         <DRM Geometry Model Instance>

Definition

This abstract DRM class is a super-class of <DRM Property Grid Hook Point>  and of organizational concepts used to create hierarchical 'trees' of  <DRM Geometry>.

Example(s)

·         See specific subclasses for examples.

Inherited field elements

field_name

range

Field_Data_Type

none

 

 

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)

·         zero or one <DRM Hierarchy Summary Item>

·         zero or more <DRM Reference Surface>s

Associated with (two-way) (inherited)

·         none

Associated with (two-way)

·         zero or more <DRM Feature> instances1

·         zero or more <DRM Geometry Hierarchy> instances2

·         zero or one <DRM Hierarchy Summary Item> instances3

·         zero or more <DRM Reference Surface> instances4

Composed of (two-way) (inherited)

·         zero or more {ordered} <DRM Attribute Set Index>

·         zero or one <DRM Classification Data>

·         zero or more <DRM Property Table>s

·         zero or more <DRM Property Table Reference>s

·         zero or more <DRM Property Value>s

·         zero or one <DRM Reference Surface>

·         zero or more <DRM Sound Instance>s

·         zero or one <DRM Spatial Domain>

Composed of (two-way)

·         zero or one <DRM Point Of Contact>

·         zero or one <DRM Reference Surface>

·         zero or more <DRM Sound Instance>s

Composed of (two-way metadata) (inherited)

·         zero or one <DRM Time Constraints Data>

Composed of (two-way metadata)

·         zero or one <DRM Access>

·         zero or more <DRM Browse Media>s

·         zero or one <DRM Citation>

·         zero or more <DRM Cross Reference>s

·         zero or one <DRM Data Quality>

·         zero or one <DRM Description>

·         zero or one <DRM Keywords>

·         zero or one <DRM Point Of Contact>

Component of (two-way) (inherited)

·         none

Component of (two-way)

·         zero or more <DRM Alternate Hierarchy Related Geometry>s through <DRM Hierarchy Data>s

·         zero or more <DRM Animation Related Geometry>s

·         zero or more <DRM Classification Related Geometry>s through <DRM Classification Data>s

·         zero or one <DRM Environment Root>

·         zero or one <DRM Geometry Model>

·         zero or more <DRM Level Of Detail Related Geometry>s through <DRM Base Level Of Detail Data>s

·         zero or more <DRM Oct Tree Related Geometry>s through <DRM Oct Tree Data>s

·         zero or more <DRM Perimeter Related Geometry>s through <DRM Perimeter Data>s

·         zero or more <DRM Quad Tree Related Geometry>s through <DRM Quad Tree Data>s

·         zero or more <DRM Separating Plane Relations>s through <DRM Separating Plane Data>s

·         zero or more <DRM Spatial Index Related Geometry>s through <DRM Spatial Index Data>s

·         zero or more <DRM State Related Geometry>s through <DRM State Data>s

·         zero or more <DRM Time Related Geometry>s through <DRM Time Constraints Data>s

·         zero or more <DRM Union Of Geometry Hierarchy>s

Constraints

·         No attribute conflicts

·         Non-crossing aggregations

·         Non-crossing associations

·         Non-cyclic aggregations

·         Precedence of Attribute_Set_Index

Notes

1 An association between a <DRM Geometry Hierarchy> instance and a <DRM Feature> instance indicates that the <DRM Geometry Hierarchy> and the <DRM Feature> are alternate representations of the same environmental object.

2 An association between two <DRM Geometry Hierarchy> instances indicates that they are alternate representations of the same environmental object.

3 An association from a <DRM Hierarchy Summary Item> instance to a <DRM Geometry Hierarchy> indicates that the <DRM Hierarchy Summary Item> summarizes that <DRM Geometry Hierarchy>.

4 An association from a <DRM Reference Surface> instance to a <DRM Geometry Hierarchy> indicates that the <DRM Geometry Hierarchy> organizes the geometric objects that specify the resolution surface of the <DRM Reference Surface>.

Class diagram

<DRM Geometry Hierarchy>