8

1194 Chapter 15: Lights and Cameras
Note:
Theconeisalwaysvisiblewhenalightis
selected, so clearing this check box has no apparent
effect until you deselect the light.
Overshoot—When Overshoot (page 3–1082) is
set, t he light casts li g ht in all directions. However,
projections and shadows occur only within its
falloff cone.
Hotspot/B eam—Adjusts the size of a light’s cone.
TheHotspotvalueismeasuredin3dsMaxunits.
Default=43.0.
Fa lloff/Field—Adjusts the size of a lig ht’s falloff.
TheFalloffvalueismeasuredin3dsMaxunits.
Default=45.0.
You can a lso adjust hotspot and falloff ang les i n
a
Light view p or t (page 2–1183) (looking at the
scenefromthepointofviewofthespotlight).
Circle/Rectangle—Determinetheshapeofthe
falloff and hotspot areas. Set Circle when you want
a standard, circular lig ht. Set Rectangle when you
want a rectangular be am of light, such as light c ast
through a window or doorway.
Aspect—Sets the aspect ratio (page 3–1005) for the
rectangular light beam. The Bitmap Fit button
lets you make the aspect ratio match a specified
bitmap. Default=1.0.
Bi tmap Fit—If the light’s projection aspect is
rectangular, sets the aspect ratio to match a
particular bitmap. This is useful when you are
using the light as a
projector lig ht (page 3–1092) .
Atmospheres a nd Effects for
Lights
Modify panel > Select light object. > Atmospheres &
Effects rollout
The Atmospheres & Effects rollout lets you assign,
delete, and set up par ameters for atmospheres and
rendering effects associated with the light. This
rollout appears only in the Modify panel; it doesn’t
appear at creation time.
Adding an atmosphere or effect associates that
atmosphere or effect with the light object. This
rollout is a shortcut to either the
Environment
panel (page 3–268)
or the Effects panel (page
3–215)
on the Environment And Effects dialog .
Procedures
To a dd a new atmosphere or r ender ing eff ect:
1.
In the Atmospheres & Effects rollout, click Add.
This displays the
Add Atmosphere or Effect
dialog (p age 2–1195)
.
2. In the dialog, choose Atmosphere, Effect, or
All. Choose New.
3. Choose an atmosphere or effect in the list, then
click OK.
This associates a new atmosphere or rendering
effect with the lig ht.
To a dd an exi sting atmos phere or render i ng ef fect:
1.
In the Atmospheres & Effects rollout, click Add.
This displays the
Add Atmosphere or Effect
dialog (p age 2–1195)
.
2. In the dialog, choose Existing.
3. Choose an atmosphere or effect in the list, then
click OK.
This creates a duplicate atmosphere or
rendering effect for the light. Its settings are
initially identical to the atmosphere or effect
you chose. You can adjust them using Setup.
To delete an atmosphere or rendering effect:
• In the Atmospheres & Effects rollout, choose
thenameofanatmosphereoreffectinthelist,
then click Delete.