Abstract Class Name: Geometry

Superclass - <SEDRIS Abstract Base>

Subclasses

• <Geometry Hierarchy>
• <Primitive Geometry>

Definition

This is an abstract DRM class encapsulating both

1. the concepts of traditional geometry and
2. measured data and organizational methods used to organize instances of these traditional geometry and of other concrete DRM classes within a transmittal.

Primary Page in DRM Diagram:

• 3

Secondary Pages in DRM Diagram:

• 5
• 14

Example

1. A <Geometry Model Instance> of a polygonal <Model> of a helicopter.

2. A collection of polygons making up the graphical representation of a forest canopy.

3. A <Property Grid Hook Point>, connecting a <Property Grid> of terrain elevation data from DTED to the geometry of an <Environment Root>.

Constraints

• <<No Attribute Conflicts>>
• <<Non Crossing Aggregations>>
• <<Non Cyclic Aggregations>>
• <<Precedence of Attribute Set Index>>

Composed of (two-way)

• zero or more {ordered} <Attribute Set Index> instances
• zero or one <Classification Data> instance
• zero or more <Property Table> instances
• zero or more <Property Table Reference> instances
• zero or more <Property Value> instances

Composed of (two-way metadata)

• zero or one <Time Constraints Data> instance

Inherited Field Elements