Exponential

The Exponential behavior creates more natural animations when scaling objects, especially when using high values. For example, when an object scales from very small to very large, our eyes erroneously perceive the animation to slow down as the object reaches its upper scale values. The Exponential parameter behavior allows such an animation to speed up the scaling as the values increase to compensate for that illusion, and create a more uniform-looking scale effect.

You can also change the interpolation modes of keyframes to Exponential. For more information, see Set curve interpolation.

Adjust this behavior using the controls in the Behaviors Inspector:

• Start Value: A slider to set the value that’s added to the parameter at the first frame of the Exponential behavior.

• End Value: A slider to set the value the Exponential behavior reaches at the last frame of the behavior. Over the life of the behavior, the parameter the Exponential behavior is applied to makes a transition from the Start Value to the End Value, plus the original value.

• Start Offset: A slider to delay the beginning of the behavior’s effect relative to the first frame of its position in the Timeline, in frames. Adjust this parameter to make the behavior start later.

• End Offset: A slider to offset the end of the behavior’s effect relative to the last frame of its position in the Timeline, in frames. Adjust this parameter to make the behavior stop before the end of the behavior bar in the Timeline. Using this slider to stop the effect, instead of trimming the end of the behavior bar in the Timeline, freezes the end of the effect for the remaining duration of the object. Trimming the end of the behavior bar resets the object to its original parameter.

• Apply To: A pop-up menu that shows the parameter affected, and that can be used to reassign the behavior to another parameter.