9

Using Motion-Capture Data 925
To save foot step da ta:
1.
Select the biped whose footsteps you
want to save, and go to the Motion panel.
2. On the Biped rollout, make sure you are
not in Figure mode, then, click Save File.
3. In the file dialog, choose Step Files (.STP) as the
file type to save.
4. Enter a name for the footstep file, and then
click OK.
Usi ng M oti on-Captur e Dat a
Besidesanimatingabipedwithfootstepsorwith
keyframing (freeform animation), you can import
amotion-capturefile.Theoverallworkflowfor
motion capture is straightforward:
• Import the motion-capture data
See Importing Motion-Capture Data (page
2–1061).
•Filterthedata
Motion-capture files are typically dense, with
keys on every f rame. Filtering the data reduces
the number of keys, resulting in an animation
with better per formance. You filter the data
w ith the Motion Capture Conversion Parameters
dialog (page 2–1070). Thisdialogcanreduce
large numbers of keys at once. It is displayed
when you use the Motion Capture rollout to
loadaBIP,BVH,orCSMfile.Onceyouhave
loaded a motion-capture fi le, you c an fi lter the
data further by clicking Con v ert From Buffer
(also on the Motion Capture rollout), which
also displays this dialog.
See Filtering Motion-Capture and Marker Data
(page 2–1061).
• (Optional) Edit the data
Once you are happy with the converted
animation, you can use the freeform animation
tools to make specific changes.
Tip: The Motion Mixer (page 2–604) provides
another way to edit motion-capture data.
Motion-capture files can be one of three file
types: the native character studio BIP format, the
BioVision (BVH) format, or the Charac ter Studio
Marker (CSM) format.
For an introduction to using motion capture, see
the tutorial “Working with Motion-Capture Data.”
Correctin g Posture
A particular motion file might position a biped
body part inappropriately. For example, the
collarbones might be rotated down too far,
affecting your mesh deformation. All you need
to do is go into Figure mode, rotate the biped
collarbones up, and then exit Figure mo de: this
corrects the collarbone posit ion for the entire
animation. The motion references the Figure
mode position, if the biped is adjusted, and this
adjustment is reflected in your animation when
you exit Figure mode.
Tip: Save a FIG file for the biped pose you used
whenyouappliedPhysique.Thenyoucanuse
the FIG file to reload this position if you need to
reapply the Physique modifier or reinitialize the
Physique settings.
How B i ped Uses Figur e M ode
When you animate the biped, t he Biped plug-in
maintains the at-rest pose you have created for
these elements of the biped body:
•Spine
•Neck
•Clavicles
•Tail