9.5.2

888 • CHAPTER 18
THE SHADERS • 889
World
The vector is specied in world coordinates and is not affected by the object’s orientation. This is
the most common setting because it allows the object to move and have the falloff stay oriented in
a consistent direction.
Camera
The vector is specied in coordinates relative to the orientation of the camera. In this way, up is always
up (in the camera view, for example) regardless of camera or object orientation.
Use Bump
If enabled, the bump normal is used to calculate the falloff. If off then the bump normal is ignored.
Gradient
The gradient used by Falloff to remap the value.
Lumas
Lumas is an illumination shader that includes three specular highlights and the ability to simulate the
anisotropic scratches that tend to produce elongated highlights in particular (see vase above).
Lumas is useful in combination with Fusion and other channel shaders or images.
Active
Here you can enable or disable the following settings. Disabled the option to use basic settings.
Color
Sets the base diffuse color of the surface.