2013

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.
Shape Specify the shape of the shadow by entering s and then the dimensions
of the shape. (For example, the radius of the sphere or the length and width
of a rectangle.)
Attenuation
Attenuation Type Controls how light diminishes over distance. The farther
away an object is from a point light, the darker the object appears. Attenuation
is also known as decay.
 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 strong
as at the point light; at a distance of 4 units, light is one quarter as strong.
The default value for inverse linear is half the maximum intensity.
 Inverse Squared. Sets attenuation to be the inverse of the square of the
distance from the light. For example, at a distance of 2 units, light is one
quarter as strong as at the point light; at a distance of 4 units, light is one
sixteenth as strong.
Use Limits Specifies whether to use limits or not.
Attenuation Start Limit Specifies the point where light starts as an offset
from the center of the light.
Attenuation End Limit Specifies the point where light ends as an offset from
the center of the light. No light is cast beyond this point. Setting an end limit
increases performance where the effect of lighting is so minimal that the
calculations are wasted processing time.
Color/Filter Color
Controls the color of the light.
True Color Specifies a True Color. Enter in the format R,G,B (red, green, blue).
Index Specifies an ACI (AutoCAD Color Index) color.
HSL Specifies an HSL (hue, saturation, luminance) color.
Color Book Specifies a color from a color book.
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