Class Name: Elliptic Cylinder

Superclass - Volume Geometry

Definition

A closed cylindrical volume that has an elliptical rather than circular cross-section. The elliptic end faces are determined by the major and minor axes and two component Reference Vectors. The component Location 3D locates the center of the bottom face. The first component Reference Vector (vector_type = SE_MAJOR_AXIS) gives the direction of the major axis. The second component Reference Vector (vector_type = SE_FACE_NORMAL) defines the normal direction to the plane of the bottom Ellipse and the direction of the Z-axis, and must be perpendicular to the major axis Reference Vector.

Primary Page in DRM Diagram:

• 5

Secondary Pages in DRM Diagram:

• 13

Example

1. The physical extent of certain underwater acoustic phenomena such as cold water eddies, fish schools etc. are best described by Elliptic Cylinder Volume Geometries.

FAQs

Constraints

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

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, some Tack Points
• optionally, some {ordered} Colors
• optionally, a Light Rendering Properties
• optionally, a Rendering Properties
• optionally, some {ordered} Image Mapping Functions
• optionally, a Rendering Priority Level

Composed of (one-way)

• one Location (notes)
• exactly (2) {ordered} Reference Vectors

Composed of (two-way)(inherited)

• optionally, a Union of Primitive Geometry

Composed of (two-way)

• optionally, a Geometry Node (notes)

Composed of (one-way metadata)(inherited)

• optionally, a Time Constraints Data

Component of (two-way)(inherited)

• one or more Union of Primitive Geometries

Field Elements

Notes

Composed of Notes

Geometry_Node

 (corresponds to center)

Location

 of center

Fields Notes

major_axis_length

 in meters > 0.0

minor_axis_length

 in meters > 0.0

height

 in meters > 0.0