2009

TCB Graph Charts the effect that changing the controller properties will have
on the animation. The red mark at the top of the curve represents the key.
The marks to the left and right of the curve represent an even division of time
to either side of the key.
The TCB graph is a stylized representation of the animation around a single
key. If you want to view the effect of changing TCB properties on the true
animation curve, use the Function Curves mode of Track View (works only
with position and scale).
The following descriptions refer to both the TCB graph and the function curve
as the animation curve.
NOTE When you are changing the properties of a selection of multiple keys, the
TCB graph is blank unless all properties are equal.
Ease To Slows the velocity of the animation curve as it approaches the key.
Default=0.
High Ease To causes the animation to decelerate as it approaches the key.
The default setting causes no extra deceleration.
Ease From Slows the velocity of the animation curve as it leaves the key.
Default=0.
High Ease From causes the animation to start slow and accelerate as it leaves
the key.
The default setting causes no change of the animation curve.
Tension Controls the amount of curvature in the animation curve.
High Tension produces a linear curve. It also has a slight Ease To and Ease
From effect.
Low Tension produces a very wide, rounded, curve. It also has a slight negative
Ease To and Ease From effect.
The default value of 25 produces an even amount of curvature through the
key.
Continuity Controls the tangential property of the curve at the key. The
default setting is the only value that produces a smooth animation curve
through the key. All other values produce a discontinuity in the animation
curve causing an abrupt change in the animation. Default=25.
High Continuity values create curved overshoot on both sides of the key.
Low Continuity values create a linear animation curve. Low continuity creates
a linear curve similar to high tension except without the Ease To and Ease
From side effect.
The default setting creates a smooth continuous curve at the key.
3260 | Chapter 15 Animation