9

Adjusting Bip ed Bal ance in the Mixer 623
Bipeds w ith same set of upper and lower body motions. Biped
on the left has balance compensation, biped on the right does
not.
By default, the Mixer compensates for differences
inupperandlowerbodymotionbymakingslight
alterations to the spine and pelvis motions. If the
biped bends over at the waist, for example, the
pelvis w ill be moved to compensate for the weight
shift, and the spine rotation will be lessened to help
the biped keep its balance. Balance compensation
is intended to make the biped’s motion look as
natural as possible.
In the Mixer , you can control the degree of
automatic balance compensation using the balance
track. One balance tr ack is automatically created
for each biped as it is added to the Mixer.
Balance track
Tip: If the balance track for a biped is not
displayed, click Preferences on the Motion Mixer
toolbar,andturnonBalanceCurvesontheMixer
Preferences dialog (page 2–651).
The balance tr ack has a weight cur ve for adjusting
thedegreeofautomaticbalancecompensation
between upper and lower b o dy trackgroup s.
By default, the weight value of 1.0 across the
balance track provides the maximum degree of
compensation. You can reduce the weight curve at
various points to lessen t he degree of automatic
balancing per formed by the M ixer.
Note: Each biped can have only one balance track,
and the ba lance track cannot be deleted.
Forfineadjustmentstobalancecompensation,
you can also change the parameters on the Balance
Parameters dialog,availablefromtheMixmenu.
Note: B alance Curves and related parameters are
not available for non-biped mixes.
Procedures
To adjust balance using the balance track :
1.
AddabipedtotheMixer,andcreateatleasttwo
trackgroups for the biped. See Filtering Mixer
Tracks (page 2–612).
2. Filter one trackgroup to use motion only from
the spine, arms and head. See Filtering Mixer
Tracks (page 2–612). This trackgroup will hold
the upper body motion.
3. Filter a different trackgroup to apply only to the
legs, pelv is and COM tracks. This trackgroup
will hold the lower body motion.
4. Add a clip with a great deal of upper body
motion to the upper body track. See Importing
Clips to the Mixer (page 2–609).
5. Add a clip with very different lower body
motion to the lower body track.
6. ClicktheBalanceWeightModebuttonat
thefarrightofthebalancetrack.