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Track View (Biped) 855
Select Start of Footstep—Selects the leftmost
key for the current footstep selection.
Select Enti re Footstep—Selects the entire
footstep.
Sel ect End of Footstep—Selects rightmost key
for the current footstep selection.
Track View (Bip ed)
Graph Editors menu > Track View - Dope Sheet or Track
View - Curve Editor
In this Track View - Dope Sheet view of a walking motion,
footsteps are represented by colored squares, footstep
numbers appear in boldface inside the squares, in between
the sta rt and end fra m es of the footstep. The numbers
between the colored boxes represent foot-air duration.
Biped and Track V iew
TheDopeSheetcanbeusedtocreateandadjust
biped keyfr ams, edit biped footsteps, and specif y
freefor m periods. Biped keys display as dots on
the tracks. Footsteps display as squares that can
be moved in time. Biped dynamics and footsteps
work together; if footsteps are moved in time,
Biped adapts leg ke ys and vertical positions to
account for the editing. There are a couple of
restrictions: you can’t overlap footsteps on the
same track, or m ove footsteps into negative time.
TheCurveEditorcanbeusedtomakeadjustments
tobipedkeyframeanimation.TheCurveEditor
is a Track View mode that allows you to work with
motion expressed as f unction curves on a graph. It
lets you visualize the interpolation of the motion,
the object transform ations that the s oftware
creates between the keyframes. You can see and
control the motion and animation of the objects in
the scene using t he keys found on the c u rves. You
canevendrawcurvesdirectlyonthegraph.
Footsteps in Tr a ck Vi ew - Dope Sheet
By default, left leg footsteps are blue and right leg
footstepsaregreen.Inactivefootstepsaremore
saturated values of blue and green, active footsteps
arepaleblueandgreen. Theleftedgeofeach
footstep block indicates when a foot touches a
footstep (Touch State). The right edge of each
footstep block indic ates the l ast frame the foot is
on a footstep (Lift State). The space between two
footsteps indicates an airborne state for the foot
(Move State). The period between the Touch and
Lift States is the Plant State.
Editing Biped K eys in Tr ack View
Track View is often used to change multiple keys
simultaneously. For example, to change Dynamics
Blend for all the vertical centers of mass keys, select
all the ver tical keys, display the TCB (Tension,
Continuity, and Bias) dialog by right-clicking over
the selected keys and change the Dynamics Blend
parameter.
Right-click a k ey in Track View to display the TCB dialog.
Separate Tracks
By default, Biped stores a ll of the toe, foot, and
calfkeysinthethightrack. Thefinger,hand,