Apple Motion 5.1.1 - Manual (Page 474)

Chapter 12 Keyframing 474
Advanced curve modification
Set curve interpolation
Although you can manually create nearly any curve shape to build the animation you want, the
Keyframe Editor provides tools to control the automatic interpolation of curves—that is, the
computed values between keyframes. Depending on the interpolation method you choose, you
can dramatically alter the shape of animation curves, and therefore the impact of your effects.
To set the interpolation for a curve, you select the keyframe you want to modify, then choose a
distribution algorithm. For more information about the preset algorithms, see
Curve interpolation
methods on page 475.
Set an interpolation method for a keyframe
Do one of the following:
m Control-click a keyframe in the Keyframe Editor, choose Interpolation from the shortcut menu,
then choose a method from the submenu.
m Select multiple keyframes, Control-click one of them, choose Interpolation from the shortcut
menu, then choose a method from the submenu.
The interpolation method chosen is applied to the entire selection.
Set an interpolation method for a curve segment
m Control-click a segment between two keyframes in the Keyframe Editor, choose Interpolation
from the shortcut menu, then choose a method from the submenu.
Only the segment between the surrounding two keyframes is affected by the interpolation
method you choose. You can set different interpolation methods for other segments of the
same curve.
When different interpolation methods are applied to segments of an animation curve, the
methods used in the curve appear with a dash next to their name in the Interpolation submenu
(in the Keyframe Editor parameter list).
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