Class Name: Ambient Color

Superclass - SEDRIS Abstract Base

Definition

The ambient reflectance component of a Primitive Color, providing the base color to the lighting equation for the object being lit.

Ambient light is the result of bouncing light rays around the environment until the light has been diffused so much that its source and direction can't be determined. Consequently, Ambient Color is

• independent of the angle of the lit object to the light source
• independent of the angle of the lit object to the observer

The Ambient Color of an object is combined with the ambient component of each incoming light source to determine the color due to the ambient light.

Primary Page in DRM Diagram:

• 14

Secondary Pages in DRM Diagram:

• 21

Example

See Primitive Color.

FAQs

Does SEDRIS use the OpenGL lighting model?

No, although the terminology is similar. SEDRIS handles transparency somewhat differently than OpenGL does, among other things. For a description of the OpenGL lighting model, see Woo et. al., Chapter 5 "Lighting" of OpenGL Programming Guide, 3rd ed., Addison-Wesley 1999.

Constraints

Composed of (one-way)

• one Color Data

Component of (one-way)

• optionally, a Light Source
• optionally, a Primitive Color