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1074 Chapter 14: character studio
This is relative. Succeeding loops start where the
previous loop left off. The clips are not blended
andmayrequireeditingunlesstheoriginalclip
was designed to loop.
Use this for clips designed to loop.
Note: This often works best if Footstep Extraction
is tuned off.
Key Re d uction Se ttings group
Key reduction keeps the original motion intact
and intelligently filters out more than 80 percent
of the keys in the motion-capture file, making
the process of altering the biped animation much
simpler.
Use the Tolerance and Minimum Key Spacing
settings to fine-tune key reduction for a specific
track (b o dy par t). Specif y whether or not to filter
a track in the Filter column.
ThesesettingsareavailableonlyifConversionis
set to Use Ke y Reduction.
Tolerance—Sets the maximum angu lar or
positionaldeviationforatrack.
Values are in units of translation for position
tracks, and in degrees for rotation tr acks.
Minimum K ey Spacing—Sets the minimum number
of frames b etween keys.
Tolerance is computed first, then Minimum Key
Spacing computes f urther key reduction.
AMinimumKeySpacingvalueof10forthehead
track ensures that no two keys are close r than 10
frames for this track.
Filter—Turnofftopreventfilteringofthemotion
capture data into a tr ack. When this is off, there is
no key reduction for the track.
Set All—Forces all t racks to the va lues set in these
fields.
Higher va lues here can determine how much key
reduction is possible w hile preserving the orig ina l
motion.
Limb Orientation group
The biped elbow and knee hinge joints are
perpendicular to the triangles formed by the
shoulder-elbow-wrist and hip-knee-ankle
respectively. Resolve errors in the motion-capture
data that break this rule by using either the angle
or poin t method.
Angle—Moves the knee or elbow position to create
the biped joint key.
Point —Rotates the shoulder-elbow-wrist or
hip-knee-ankle to create the biped joint key.
Auto—Auto reads exact hand and foot pos itions
from the motion-capture data; character studio
then places the knees and elbows in a natural
position. For marker files involving running and
walk ing, this option can clean up the data nearly