2011

Intensity Enter an intensity value in candelas, the perceived power in a
luminous flux value, or illuminance value for the total luminous flux incident
on a surface.
■ Candela (symbol: cd) is the SI unit of luminous intensity (perceived power
emitted by a light source in a particular direction). Cd/Sr
■ Lux (symbol: lx) is the SI unit of illuminance. Lm/m^2
■ Foot-candle (symbol: fc) is the American unit of illuminance. Lm/ft^2
Enter f to specify the perceived power in a luminous flux value.
If you enter i, you can specify the intensity of the light based on an illuminance
value.
The illuminance value can be specified in either lux or foot-candles. Enter d
to specify a distance to use to calculate illuminance.
Color Specify the color of the light based on a color name or a Kelvin
temperature.
Enter ? to display a list of color names. Enter a text string using wild card
characters to display a partial listing of color names, or an asterisk (*) to display
all the possible choices.
If you enter k, you can specify the color of the light based on a Kelvin
temperature value.
Exit Exits the command.
Shadow
Makes the light cast shadows.
Off Turns off the display and calculation of shadows for the light. Turning
shadows off increases performance.
Sharp Displays shadows with sharp edges. Use this option to increase
performance.
Soft Mapped Displays realistic shadows with soft edges.
Map Size Specifies the amount of memory that should be used to calculate
the shadow map.
Softness Specifies the softness to use to calculate the shadow map.
Soft Sampled Displays realistic shadows with softer shadows (penumbra)
based on extended light sources.
1038 | Chapter 20 T Commands