Class Name: Color Table

Superclass - SEDRIS Abstract Base

Definition

A single Color Table within a Color_Table_Group. A Color Table contains a list of Primitive Colors. The Color Index, which is directly associated with the Color Table Group that contains the Color Table, indexes into the ordered list of Primitive Colors in the Color Table.

(Use the SE_TokenSetDefinition() function to find the type of a class' token set.)

Primary Page in DRM Diagram:

• 14

Example

1. Consider a data provider whose format specifies colors using palettes. To convey exactly the color information used, each palette is represented in SEDRIS as the primary Color Table in a Color Table Group.

FAQs

Why do Color Tables have Primitive Colors instead of Inline Colors?

Color Tables used to be composed of Inline Colors, but problems arose since both Color Index and Inline Color objects can have Translucency. When a Color Index that has a Translucency component refers to an entry in a Color Table, the interpretation is clearer if the Color Table's entry cannot have any additional Translucency. Consequently, Primitive Color exists so that we can put 'just the color' into a Color Table's entry.

Constraints

• Color Table Size

Composed of (one-way)

• one or more {ordered} Primitive Colors

Composed of (one-way metadata)

• optionally, an Access
• optionally, some Browse Graphics
• optionally, a Citation
• optionally, some Cross References
• optionally, a Description
• optionally, a Keywords
• optionally, a Point of Contact

Component of (two-way)

• one Color Table Group

Field Elements