9.5.2

974 • CHAPTER 19
TIMELINE • 975
Default Interpolation produces a soft, smooth movement. The tangents are always straight so there
will never be a kink in the curve. However, this method produces overshooting of the F-Curve if values
change substantially over a short period of time. This can lead to unwanted behavior; for example,
you may nd that, following a position change, an object moves the wrong way for a short time.
Also, even if two successive keys have exactly the same position values, the object may move slightly
between the two as if to gather momentum.
Custom interpolation is a mixture of soft and hard movement. The tangents are slightly cracked in
some cases to compensate for the overshooting.
Choose Edit Interpolation to determine which type of interpolation is applied when you record keys.
For a description of the parameters in the Edit Interpolation dialog, look up ‘key, interpolation’ in the
index.
All Frames
This setting ensures each frame is displayed when the animation is played in a viewport. Normally,
frames are skipped when the computer is not fast enough to play the animation at the frame rate
specied in the project settings. With All Frames enabled, all frames will be played.
Project
This is the default setting. It ensures that the viewport frame rate is the same as the frame rate in
the project settings. Frames will be skipped if the computer cannot play back the animation at the
specied frame rate.
1 ... 500
The lower portion of the Options menu enables you to select from a number of playback rates. Keep
in mind that frames will be skipped if the computer cannot play back the animation at the specied
frame rate.