Class Name: Geometry Model Instance

Superclass - Geometry Hierarchy

Definition

A single case of the existence of a Geometry Model within the transmittal, including variations or specialization unique to that case.

Primary Page in DRM Diagram:

• 7

Secondary Pages in DRM Diagram:

• 2
• 3
• 16

Example

1. Consider a Model of a building, consisting of a Geometry Model describing its geometric representation, where the Model is described in an LSR 3D spatial reference frame.

   To instance this Model into an Environment Root whose spatial reference frame is 3D geodetic, the data provider constructs a Geometry Model Instance with a World Transformation component, and incorporates it into the Geometry Hierarchy of that Environment Root. The World Transformation specifies the GD Location 3D at which the Model's 0, 0, 0 coordinate will be instanced, together with any other transformation information required to orient and scale the Model properly.

2. Consider a Geometry Model describing the rotor of a helicopter, and intended for use within a larger Geometry Model of the entire helicopter. Both are defined in 3D LSR spatial reference frames.

   The helicopter model will contain a Geometry Model Instance of the rotor model, with an LSR Transformation component containing a Rotation object with a Rotation Control Link. The LSR Transformation specifies both the transformation required to position the rotor within the helicopter model, and the Variable within the larger helicopter Model that will be plugged into the rotor Model's internal Variable for angle of rotation.

FAQs

Constraints

• No Attribute Conflicts
• Non Crossing Aggregations
• Non Cyclic Aggregations
• Precedence of Attribute Set Index
• Non Crossing Associations
• Color Mapping Restrictions
• Distinct Link Objects
• Image Mapping Functions and Texture Coordinates
• Model Spatial Reference Frame

Associated to (one-way)

• one Geometry Model

Associated by (one-way)(inherited)

• optionally, a Hierarchy Summary Item
• optionally, some Reference Surfaces

Associated with (two-way)(inherited)

• optionally, some Features
• optionally, some Geometry Hierarchies

Composed of (one-way)(inherited)

• optionally, some {ordered} Attribute Set Indices
• optionally, a Classification Data
• optionally, some Property Tables
• optionally, some Property Table References
• optionally, some Property Values
• optionally, a Reference Surface
• optionally, some Sound Instances
• optionally, a Spatial Domain

Composed of (one-way)

• optionally, some {ordered} Colors
• optionally, a Conformal Behavior
• optionally, some {ordered} Image Mapping Functions
• optionally, a Light Rendering Properties
• optionally, an Overload Priority Index
• optionally, a Rendering Priority Level
• optionally, a Rendering Properties
• optionally, a Stamp Behavior
• optionally, a Transformation

Composed of (two-way)

• optionally, some Expressions through Geometry Instance Template Indices

Composed of (one-way metadata)(inherited)

• optionally, a Time Constraints Data
• optionally, an Access
• optionally, some Browse Graphics
• optionally, some Cross References
• optionally, a Data Quality
• optionally, a Keywords
• optionally, a Point of Contact

Component of (two-way)(inherited)

• optionally, some Alternate Hierarchy Related Geometries through Geometry Hierarchy Data
• optionally, some Animation Related Geometries
• optionally, some Classification Related Geometries through Geometry Classification Data
• optionally, an Environment Root
• optionally, some Geometry Separating Plane Relations through Geometry Separating Plane Data
• optionally, a Geometry Model
• optionally, some Level of Detail Related Geometries through Geometry Level of Detail Data
• optionally, some Oct Tree Related Geometries through Geometry Oct Tree Data
• optionally, some Time Related Geometries through Geometry Time Constraints Data
• optionally, some Perimeter Related Geometries through Geometry Perimeter Data
• optionally, some Quad Tree Related Geometries through Geometry Quad Tree Data
• optionally, some Spatial Index Related Geometries through Geometry Spatial Index Data
• optionally, some State Related Geometries through Geometry State Data
• optionally, some Union of Geometry Hierarchies