9

584 Chapter 12: Animation
• On: Dragging a tangent handle affects both
handles of all selected keys.
Apply E ase Cur ve / A pply
Multiplier Cur ve
T rack View > Curve Editor > Curves menu > Apply Ease
Curve or Apply Multiplier Curve
Apply - Ease Curve and Apply - Multiplier Curve
(available from the Curves menu in the Curve
Editor)createaneasecurveormultipliercurve
track. These tracks let you modif y or intensify an
existing animation track without changing the
original track.
• A multiplier curve shifts the value of the
original track up or down.
Adjusting the multiplier curve increases or
decreases the “intensity” of the original t rack.
• An ease curve shif ts the t ime of the original
track left or r ig ht.
Adjusting the ease curve changes time. The
value of the ease curve at a par ticular frame
is a frame value from the orig inal track. For
example, if the ease curve is 0 at frame 0 and
10 at frame 10, the origina l tr ack plays at its
original speed. If t he ease curve va lue at frame
10 increases to 20, the original tr ack plays to
frame 20 by frame 10: it has been sped up by a
factor of two.
Once you apply an ease or multiplier curve, you
can edit its keys, ranges, and propert ies just like
any other animation track.
One u se of ease and multiplier curves is to blend
between the effects of different controllers. This
canbeanaidtononlinearediting.
Procedure
To apply an ease curve or a multiplier cur ve:
1.
In the Curve Editor Hierarch y list, highligh t the
tracks you w ish to ease or intensify.
Not all controller items can receive ease or
multiplier cur ves. For example, the Path
Constraint position controller cannot receive
an ease or multiplier curve, but its subordinate
Percent controller can. If the highlighted
controller is incapable of receiving ease or
multiplier curves, nothing happens when you
apply the curve.
2. From the Curves menu, choose Apply - Ease
CurveorApply-MultiplierCurve.
3. In the Controller window expand the
highlighted tracks to view the ease curve.
4. Hold down the Ctr l key and click the ease
curve and controller tracks.
5. Adjust the keys on the ease curve and watch the
result in the controller curve.
UseaMultipliercurvetointensifyaneffect,or
an ease curve to make less of an effect.
Tip: U se Step interpolation to use the ease curve
to turn tracks on and off.
Interfa ce
Apply - Ea se Cur ve—Applies a curve to alter the
timing of the selected function curve. Ease curves
vary the timing of a superior function curve.
A normal function curve charts an animated
parameter value over time. An ease c urve charts
changes to the timing of a function curve over
time.
Apply - Multiplier Curve—Applies a curve to scale
the value of the selected function curve. The value
ofamultipliercurveisascalefactorappliedtothe
value of its superior function curve.
You apply ease and multiplier cur ves in Curve
Editor mode. Once you apply an ease or multiplier