9.5.2

320 • CHAPTER 7
OBJECTS MENU • LIGHTING • 321
Attribute manager settings
General
Color
You can adjust the color of each of your lights using the slider controls and the text input boxes for
each color element (RGB). You may change the color system (perhaps to HSV 0...255) using the drop-
down list below the Color box. It is also possible to use the color sliders to achieve negative lighting
effects, which is discussed in detail later in this chapter.
Brightness
This value controls the overall brightness of the light source. While this control may be seen as just
a way to brighten or dim your light source, it’s also capable of another interesting, and very useful,
effect. Using a negative value with this option results in negative lighting. The color of your light
source (set in the General tab) is important here. That color will not be added to the scene where a
negative light source is in effect. With this technique you can articially darken and shade specic
areas of your scene.
This type of lighting works even better when used with carefully constructed environment lighting
and falloff ranges. A good understanding of environment lighting is needed.
Type
Denes the light’s type, such as Spot, Tube or Parallel.
Shadow
Denes the type of shadow generated by a light source.