8

924 Chapter 14: Character Studio
problem associated with motion-capture
import.
Inappropriate “sliding feet” in the motion data
are corrected.
•
Fit to Exi s ti n g —Fits to existing footsteps.
Use with motion data that has both footstep
motion and flying, swimming , falling, or
tumbling motions.
First load the motion data using Perform
Footstep Extraction. Create a freeform period
for the flyi ng, swimming, or fa lling portion
ofthedatainTrackView,andthenreload
thesamemotioncapturefileusingtheFitto
Existing option. The freeform area is loaded
w ith data from the m otion capture fi le without
the influence of biped dynamics.
Co nversion—Choosesthetypeofkeyprocessing.
•
Use K ey R eduction—Reduceskeysforsimpler
key editing.
•
No K ey R eduction—Does not reduce keys. Use
this on files that are already key reduced or if
you want to work with all the data in a raw
motion-capture file.
Note: Marker files imported for the first time
should be loaded with no key reduction or
footstep extraction to enable the calibration
controls on the Motion Capture rollout.
•
Loa d B u f fe r O nl y —Does not apply the data to the
biped, but loads the data to the motion-capture
buffer only. Use this either to comp are your
edited version with the original or to paste
postures from the motion-capture buffer to the
biped in the scene.
Tip: To compare the filtered data with raw
motion-capture data, use Show Buffer on the
Motion Capture rollout (page 2–916) rather
than tur n ing off key reduction.
Up Vector—Sets the vertical axis used in the
motion-capture data.
Scale Factor—Multiplies the stored talent size by
this value and size the biped accordingly.
Footstep Extraction group
Options here are active when Footstep Extraction
is on.
Ex traction Tolerance—Sets the sensitivity of
footstep extraction. character studio determines
if the footstep is there by checking that the foot
does not move beyond the distance determined by
the Extraction Tolerance value. Smaller numbers
are more sensitive and extr act more footsteps. The
value is a percentage of foot length.
The default value is 0.15. Increase this value to 0.2
or 0.25 if too many footsteps are generated.
Sliding Distance—Creates a sliding footstep (page
2–915)
when positional tolerance is reached. This
value is a percentage of foot length. By default, the
foot must slide its ow n distance (100), before a
sliding footstep is created.
Use this with motion-capture files that contain
sliding feet. A sliding footstep can be created
manually by setting IK Blend > 0 for a biped foot
at a "touch" state key (biped foot first touches a
footstep).
Note: Sliding footsteps display as a footstep with a
line through the center.
Sliding Angle—Creates a sliding footstep (page
2–915)
when rotational tolerance is reached. This
value is in degrees; the default is set high (360
degrees).Thefootmustmakeacompleteturn
before a sliding footstep is created.
Use this with motion-capture files that contain feet
that pivot, as in a dance mot ion.
Note: Sliding footsteps display as a footstep with a
line through the center.
Only Ex tr act Footsteps W ithin Tolerance—Turns
on Z -axis Tolerance. These controls filter out
footsteps that do not fall within a given range of