Graphics Programs Reference
In-Depth Information
In this example, you adjusted the spotlight's falloff. By increasing the falloff angle, you broad-
ened the spread of the light cast by the spotlight and also made the transition from light to dark
appear smoother, as shown in Figure 21.27. The hotspot can also be adjusted to a narrow beam
or a wide swath.
Many other light properties are available to you in the Properties Inspector palette. Table 21.1
describes them.
TABLE 21.1:
Some of the properties available for lights
PROPERTY
DESCRIPTION
General
Name
Shows the name of the light
Ty p e
Sets the type of light
On/Off Status
Shows whether light is on or off
Hotspot Angle
Sets the spotlight hotspot angle
Falloff Angle
Sets the spotlight falloff angle
Intensity Factor
Sets the light intensity
Filter Color
Sets the secondary light color simulating a color filter over a lamp
Plot Glyph
Allows the light glyph to be plotted
Glyph Display
Controls the display of the light glyph
Attenuation
Ty p e
Type of attenuation: Inverse Linear, Inverse Square, or None
Use Limits
Lets you turn on attenuation limits
Start Limit Offset
If Use Limits is on, sets the distance to the beginning of attenuation
End Limit Of fset
If Use Limits is on, sets the distance to the end of attenuation
Rendered Shadow Details
Ty p e
Lets you select between sharp and soft shadow edges
Map Size
When shadow maps are used, lets you determine the size of the shadow map
in pixels
Softness
When shadow maps are used, determines the softness of shadows
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