User Guide

391

Chapter 13: Using Property and

Tracking Controls (PB only)

he Production Bundle includes a set of motion, property, and tracking controls that

you can use to automatically create and modify keyframes.

Note: The Smoother is a non-Production Bundle feature that creates or modiﬁes keyframes in

order to smooth a motion path, value curve, or velocity curve. For information on using The

Smoother, see “Smoothing motion and velocity” on page 177.

Adding randomness

You can add randomness to any property as it varies over time by using The Wiggler. (You

can also use the wiggle expression to accomplish this. See “Property attributes and

methods” on page 335.) Depending on the property and the options you specify, The

Wiggler adds a certain number of deviations to a property by adding keyframes and

randomizing interpolations coming into or out of existing keyframes. You need at least

two keyframes to use The Wiggler.

Using The Wiggler, you can more closely simulate natural movement within speciﬁed

limits. For example, add randomness to an animated butterﬂy to produce ﬂuttering. Add

it to brightness or opacity to simulate the ﬂicker of an old projector.

To add randomness to a property:

1 Select a range of keyframes for the property.

2 Choose Window > The Wiggler.

UG.book Page 391 Wednesday, February 21, 2001 12:05 PM