Abstract Class Name: Transformation

Superclass - SEDRIS Abstract Base

Subclasses

• LSR Transformation
• World Transformation

Definition

A Transformation is applied to the child graph containing the transformation. Location 3D and Reference Vectors are always affected by Transformations. Angles and ranges are generally NOT affected by Transformations.

A World Transformation can exist without having a matrix or transformation steps, in which case the identity matrix is assumed, but an LSR Transformation must have either a matrix or transformation steps, or both.

Primary Page in DRM Diagram:

• 7

Example

1. The location and orientation of a building instanced on to the terrain.
2. The Translation, Rotation, and Scale applied to a gun barrel when modeled into a tank turret.
3. The location, and orientation of a grid defining a liquid water content layer referenced to the terrain.
4. The Transformation that enables the use of a sidewinder missile with horizontal orientation when it was modeled standing vertically on its fins.
5. The Transformation into place of a logical Model sub-graph, e.g., the superstructure of a ship.

Constraints

Component of (one-way)

• optionally, some Feature Model Instances (notes)
• optionally, some Geometry Model Instances (notes)

Notes

Component of Notes

Feature_Model_Instance

 To transform a <Feature Model Instance> into place

Geometry_Model_Instance

 To transform a <Geometry Model Instance> into place