8

324 Chapter 12: Animation
Upper L im it Group
Enable—Togg les the upper limit set by the
controller. When off, no upper limit is imposed.
Default=on.
[Upper Limi t va lu e]—The highest va lue permitted
by the Limit controller. Any values above this
valueintheoriginalcontrollerareclipped;that
is, they’re set to this value, unless smoothing is in
effect. Default=1000.0.
You can animate this value v ia keyframing and
other standard m ethods, and manipulate this
animationinTrackViewviatheUpperLimittrack
inthecontroller’sLimitsbranch.
Smoothing Buf fer —Specifies a smoothing value,
so that clipped values at the be ginning and end of
a clipped range gradually increase and decrease
instead of leveling off abruptly.
The maximum total smoothing is determine d
by the Upper and Lower Limit values. (Upper
Limit > Smoothing Buffer value) + (Lower Limit
> Smo othing Buffer value) cannot exceed this
total. For the smoothest possible results at the
upper and lower extents of the clipping, set either
Smoothing Buffer value to the maximum amount,
and then b ack it off to half that value and set the
other Smoothing Buffer to the same amount.
You can animate the Smoothing Buffer value via
key f r aming and other standard methods, and
manipulate this animation in Track View via the
Upper Smoothing track in the controller’s Limits
branch.
Lower Limit Group
Enable—Toggles the lower limit set by the
controller. When off, no lower limit is imposed.
Default=on.
[Lower L imi t va l ue]—The lowest value permitted
by the Limit controller. Any values below this
valueintheoriginalcontrollerareclipped;that
is, they’re set to this value, unless smoothing is in
effect. Default=-1000.0.
You can animate this value via keyframing and
other standard methods, and manipulate this
animation in Track View via the Lower Limit track
in the controller’s Limits branch.
Smoothing B uf fer —Specifies a smoothing value,
so that clipped values at the beginning and end of
a clipped range gradually decrease and increase
instead of leveling off abruptly.
The maximum total smoothing is determined
by the Upper and Lower Limit values. (Upper
Limit > Smoothing Buffe r value) + (Lower Limit
> Smoothing Buffer value) cannot exceed this
total. For the smoothest possible results at the
upperandlowerextentsoftheclipping,seteither
Smoothing Buffe r value to the maximum amount,
and then back it off to half that value and set the
otherSmoothingBuffertothesameamount.
You can animate the Smoothing Buffer value via
keyframing and other standard methods, and
manipulate this animation in Track View via the
Lower Smoothing track in the controller’s Limits
branch.