8

Adjusting Clip Timing 591

To filter and name a track group:

Highlight the trackgroup label at the upper left

corner of the trackgroup you want to filter. By

default, the trackgroup label is All, denoting

that the trackgroup c urrently affects all biped

parts.

2. From the Motion Mixer menu, choose

Trackg roups > Filter.

The Trackgroup Filter dialog appears. By

default, all body par ts are selected.

3. Click on body p arts in the diagram to select or

deselect them. You can also use the buttons

below the diagram to help make the selec tion.

For example, if the trackgroup will affect only

thearms,clickNonetodeselectallbipedparts,

then click the four arm boxes to select the arms.

4. Enter an appropriate name for the trackgroup

at the bottom of the Trackgroup Filter dialog,

such as Arm s .

5. Click OK to close the dialog.

The new trackgroup name appears at the upper

left of the track display.

Adjusting Clip Timing

In the Motion Mixer, you can shorten clips or

change their timing interactively within the track

display. You can change the timing of motion clips

in a number of ways:

• Change the length of a clip without changing its

speed by trimming the clip at the start or end.

• Change the speed of an entire clip by stretching

it out or shrinking it.

• Cause varying changes in speed throughout the

clip with time warps. See

Adding Time Warps

(page 2–597)