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552 Chapter 12: Animation
Inter face
Selec t from the options for repeating your
animationandoptionsforapplyingalinearvalue.
Co nstant—Holds the value of the end key of the
range for al l f r ames. Use constant when you want
no animated effect before the first key of the
rangeorafterthelastkey.Constantisthedefault
out-of-range type.
Cycle—Repeats the same animation as within the
range. If the first and last keys in the range have
different values, the animation will show an abrupt
"jump"fromthelastkeytothefirst. UseCycle
when you want an animation to repeat, but do not
need the ends to match.
Loop—Repeats the same animation as within the
range, but interpolates between the last key and
first key in the range to create a smooth lo op. If
the first and last key are both at the extreme ends
oftherange,LoopwillbehaveexactlylikeCycle.
If you use Position Ranges to extend the range
bar beyond the keys, the added length determines
theamountoftimeusedtointerpolatebetween
the last key and the first key. Use loop with an
extended range bar to produce smoothly repeating
animation.
Ping Pong—Alternates between a forw ard and
backward repeat of the animation within the range.
Use Ping Pong when you want your animation to
alternate back and forth.
Linear—Projects the animation value along a line
tangent to the function curve at the end of the
range. Use Linear when you want the animation to
enter and leave the range at a constant velocity.
Relative Repeat—Repeats the same animation as
within the range but offsets each repetit ion by the
value at the end of the range. Use Relative Repeat
to create animations that build on each other as
they repeat.
Add Note Tra ck
Main toolbar > Curve Editor (Open) > Modes > Dope
Sheet > Edit Keys > Tracks menu > Note Tracks > Add.
With Add Note T rack, you can insert a note
track below a highlighted track in the Track View
Hierarchy. You can make note keys and associated
notes at specific time locations to keep track of
whatkeysdo. DothisbyaddingkeysinDope
Sheet > Add Keys mode, then right-click a note key
to see the Notes dialog. The information you enter
will appear in the Key window under the keys.
Any item in the Hierarchy list can have a note track
added as a branch below it. You can add a note
tracktoaniteminanyoftheTrackViewmodes.
Note track for animation of door opening
Onceyouhavecreatedanotetrackforanitem,
use Add Keys to insert note keys. Use the Notes
dialog to edit the notes.
You can have toolbar access to the Note Tracks by
unhiding the Tools: Track View toolbar.