Lights (Sheet 21)
Light Rendering Properties
- Do not illuminate. Do not affect the environment.
- Actual behavior defined by Light Rendering Behavior components, such as Flashing, Rotating, Twinkling, ...
- Are a component of Geometry (groups or primitives)
Light Sources
- Do illuminate. Do affect the environment.
- Three subclasses: Infinite, Positional, and Spot
- Light Source is a component of Geometry Hierarchy.
- A Light Source only affects the Geometry Hierarchy and the components of that Geometry Hierarchy, regardless of the spatial location of the Light Source.