Abstract Class Name: Surface Geometry

Superclass - <Primitive Geometry>

Subclasses

• <Ellipse>
• <Polygon>

Definition

An instance of a concrete class derived from this DRM class is a geometric surface representation.

Primary Page in DRM Diagram:

• 5

Secondary Pages in DRM Diagram:

• 23

Example

1. The terrain skin within a given area can be specified as a collection of <Polygon> instances.

Constraints

• <<Publishable Object>>
• <<No Attribute Conflicts>>
• <<Non Crossing Aggregations>>
• <<Non Cyclic Aggregations>>
• <<Precedence of Property Set Index>>
• <<Colour Mapping Restrictions>>
• <<Continuous LOD Restrictions>>
• <<Image Mapping Functions and Texture Coordinates>>
• <<Nested Primitive Geometry>>

Composed of (two-way) (inherited)

• zero or one <Classification Data> instance
• zero or more {ordered} <Property Set Index> instances
• zero or more <Property Table> instances
• zero or more <Property Table Reference> instances
• zero or more <Property Value> instances
• zero or more <Colour> instances
• zero or more {ordered} <Image Mapping Function> instances
• zero or one <Light Rendering Properties> instance
• zero or one <Presentation Domain> instance
• zero or one <Rendering Priority Level> instance
• zero or one <Rendering Properties> instance
• zero or more <Tack Point> instances
• zero or one <Union Of Primitive Geometry> instance (notes)

Composed of (two-way metadata) (inherited)

• zero or one <Time Constraints Data> instance

Component of (two-way) (inherited)

• zero or more <Union Of Primitive Geometry> instances

Inherited Field Elements

Notes

Composed of Notes

Union_Of_Primitive_Geometry

 A <Primitive Geometry> instance contains a
 <Union Of Primitive Geometry> instance as a component only
 when that <Primitive Geometry> instance can be decomposed
 into nested <Primitive Geometry> instances, as (for
 example) a <Polygon> instance can be decomposed into
 subfaces.