2011

Table Of Contents
for the program to calculate light levels where the light is already practically
invisible.
To set attenuation in a point light or a spotlight
1 Click Render tab Lights panel Lighting Units drop-down
Generic Lighing Units.
No lighting units are used and standard (generic) lighting is enabled.
NOTE Alternatively, you can enter lightingunits at the command prompt
and set the value to 0 for standard (generic) lighting.
2 Click View tab Palettes panel Properties.
3 In the drawing, click the light glyph.
4 In the Properties palette, under Attenuation, set Use Limits to Yes, or
select a type of attenuation:
None. Sets no attenuation. Objects far from the point light are as
bright as objects close to the light.
Inverse Linear. Sets attenuation to be the inverse of the linear distance
from the light. For example, at a distance of 2 units, light is half as
2052 | Chapter 44 Add Lighting to Your Model