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>