9.5.2

350 • CHAPTER 7
OBJECTS MENU • LIGHTING • 351
Radius/Decay
The range between the Inner Radius and the Radius/Decay is where the brightness of the source
light changes from 100% to 0%. This Radius/Decay value indicates the maximum range that will be
illuminated by the source light.
Colored Edge Falloff
Colored Edge Falloff disabled. Colored Edge Falloff enabled.
This option is only available when using a spotlight with Use Inner Color enabled. The normal behavior
of the inner color is to spread in a linear direction along only the Z-axis of the spotlight, from its origin
to the light source’s color (selected on the General page). If you select Colored Edge Falloff, however,
the Inner Color will also radiate outwards from the Inner Angle through to the light source’s general
color.
Z Direction Only
A rectangular Area light, with the “Z Direction Only” option active, in the center of a room.
If this option is active, light will only be emitted in the light’s positive Z-direction. Light that is emitted
in the opposing direction will be clipped on the X-Y plane.