Abstract Class Name: Colour Data

Superclass - <SEDRIS Abstract Base>

Subclasses

• <CMY Colour>
• <HSV Colour>
• <RGB Colour>

Definition

An instance of this DRM class specifies a 3-tuple representing a colour value, that is, the actual colour coordinate values for a colour in the given colour model. See the individual subclasses, each of which is specialized for a particular colour model, for details.

Primary Page in DRM Diagram:

• 14

Secondary Pages in DRM Diagram:

• 23

Example

See concrete subclasses for examples.

FAQs

Consider a data consumer who does not use the colour model that the data provider used. How can the data consumer get the colour values in the consumer's colour model?

If the consumer's colour model is one of the SEDRIS defined colour models (RGB, CMY, or HSV), the SEDRIS Level 0 API, if directed to do so, will change all <Primitive Colour> instances into whichever directly supported colour model the data consumer wishes to specify.

If the data consumer's colour model is not directly supported, the consumer should retrieve the data in an appropriate colour model for use with one of the utility functions provided in the DRM API.

Where can users find more information on colour in SEDRIS?

See Part 4, Volume 8 Images and Colour Models Technical Guide of the SEDRIS Documentation Set for further information.

Constraints

Component of (two-way)

• zero or more <Ambient Colour> instances
• zero or more <Diffuse Colour> instances
• zero or more <Emissive Colour> instances
• zero or more <Specular Colour> instances

Inherited Field Elements