In the Parts tab of the Auto Motion Settings panel,
the settings which have negative or positive values only make the actor perform the motions to single side or rotating direction.
However, if you need the motions to move or rotate in two opposite directions, then
you can apply to the Pingpong feature.
Using the Pingpong Feature
Create a new project and add an actor. Apply a voice file to the
actor in either Talk or Listen mode (in this
example, the Listen mode is taken and the parts have
been set to be voice-motivated).
The settings for the parts will only let the
actor's head rotate to the right, the right
shoulder raise up and the left shoulder
lower down.
Click the Auto Motion Setting
button to open the panel and switch to the Parts tab.
Select the Head Rotate button.
Activate the Pingpong box of the Swing (CCW/CW).
This step ensures the
head is able to rotate in dual directions.
After activating the box, the head is able to
rotate in dual directions. However, the
shoulder movement remains in a single direction.
The Theory of Pingpong
Before activating the Pingpong box, the
motions remain in the same quadrant or direction without running over to
the opposite one when it comes to the peak of the voice wave.
Please refer to the
Parts Movements for Auto Motion Settings Panel
section for more information.
After the Pingpong box is activated, the
motions are able to run over to the other quadrant or direction when the
sound wave passes through the
threshold.
Positive values + Pingpong:
Horizontal Movements:
The part moves to the right,
returns to the initial position and then moves to the left.
Vertical Movements:
The part moves up, returns
to the initial position and then moves down.
Front/Back Movements:
The part moves forward,
returns to the initial position and then moves backward.
Rotate: The part rotates clockwise, returns to the initial direction and then rotates counterclockwise.
Scale: The part enlarges, re-scales to the initial size and then shrinks.
Negative values + Pingpong:
Horizontal Movements:
The part moves to the left,
returns to the initial position and then moves to the right.
Vertical Movements:
The part moves down, returns
to the initial position and then moves up.
Front/Back Movements:
The part moves backward,
returns to the initial position and then moves forward.
Rotate: The part rotates counterclockwise, returns to the initial direction and then rotates clockwise.
Scale: The part shrinks, re-scales to the initial size and then enlarges.
With the same concept, individually select the Left Shoulder and Right Shoulder.
Activate the Pingpong boxes of the Down/Up
parameters for the Shoulders to allow them to move up and
down in opposite directions:
Click the Apply button to apply the
modified auto motion profile.
button to open the panel and switch to the Parts tab.
button to apply the
modified auto motion profile.