Spatial Interpolation And The Motion Path; Temporal Interpolation And The Value Graph; Mixing Incoming And Outgoing Interpolation Methods - Adobe AFTER EFFECTS 7.0 Manual

See also
"About changes in speed" on page 224
"About the Graph Editor" on page 188

Spatial interpolation and the motion path

When you apply or change spatial interpolation for a property such as Position, you automatically adjust the motion
path in the Composition panel. The different keyframes on the motion path provide information about the type of
interpolation at any point in time. The Info panel displays the spatial interpolation method of a selected keyframe.
When you create spatial changes in a layer, After Effects uses Auto Bezier as the default spatial interpolation.
To change the default to linear interpolation, choose Edit > Preferences > General (Windows) or After Effects >
Preferences > General (Mac OS), and select Default Spatial Interpolation To Linear.
A
Motion path interpolation
A. Linear B. Auto Bezier C. Continuous Bezier D. Bezier E. Hold

Temporal interpolation and the value graph

Using the value graph in the Graph Editor, you can make precise adjustments to the temporal property keyframes
you've created for your animation. The value graph displays x values as red, y values as green, and z values (3D only)
as blue. The value graph provides complete information about the value of keyframes at any point in time in a
composition and allows you to control it. In addition, the Info panel displays the temporal interpolation method of
a selected keyframe.
See also
"Interpolation methods" on page 220

Mixing incoming and outgoing interpolation methods

By default, a keyframe uses one interpolation method, but you can apply two methods: the incoming method applies
to the property value as the current time approaches a keyframe, and the outgoing method applies to the property
value as the current time leaves a keyframe. When you set different incoming and outgoing interpolation methods,
the keyframe icon in Layer bar mode changes accordingly. It displays the left half of the incoming interpolation
method icon and the right half of the outgoing interpolation icon.
To toggle between keyframe icons and keyframe numbers, select Use Keyframe Icons or Use Keyframe Indices from
the Timeline panel menu.
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