Class Name: Point

Superclass - <Point Geometry>

Subclasses

Definition

An instance of this DRM class specifies an attributed location, which conceptually has no spatial extents.

Primary Page in DRM Diagram:

• 5

Secondary Pages in DRM Diagram:

Example

1. The abstract representation of the sun, a <Point> in space from which the light emanates.
2. The headlight of a jeep as viewed from a kilometre away.

FAQs

Constraints

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

Associated with (two-way)(inherited)

• zero or one <Geometry Node> instance

Composed of (two-way)(inherited)

• 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
• 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)
• zero or one <Conformal Behaviour> instance
• one <Location> instance

Composed of (two-way)

• zero or one <Morph Point> instance
• zero or more <Reference Vector> instances
• zero or more {ordered} <Texture Coordinate> instances

Composed of (two-way metadata)(inherited)

• zero or one <Time Constraints Data> instance

Component of (two-way)(inherited)

• one or more <Union Of Primitive Geometry> instances

Inherited Field Elements

Notes

Composed of Notes

Union_Of_Primitive_Geometry

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