8

Key Info Rollout 811
Usethistofinetunekeyframetimingona
character by moving a key backwards and
forwards in time.
Set K ey —Creates keys at the cur rent frame
when you are moving biped objects. This is
ident ical to Set Key on the 3ds Max toolbar.
You c a n experime nt with different biped poses
without updating the motion until you find the
desired pose. You c an also quickly fine tune your
motion by setting a key and adjusting the key
parameters on the Key Info rollout without having
to transform the biped in the viewports.
Note: If a biped key is current, then TCB, XYZ
position spinners, and IK Blend parameters c an be
updated without using Set Key or having the Auto
Key button turned on.
Note: If3dsMaxbonesusingtheIKControlleror
3ds Max Particle Emitters are linked to the biped,
or if you are displaying 3ds Max trajectories or
ghosting, the Auto Key button
must be on while
the biped is positioned. These objects update their
parameters in real time as t hey are positioned.
Delete K ey—Deletes the key of t he selected
object at the current frame.
By default, biped ar m, hand, and finger keys are
stored in the clavicle track. If you delete keys for
any one of these objects, you lose positions for
the rest of the arm objects at that frame. If you
plan on extensive hand animation, turn on Arms
intheSeparateTracksgroupoftheKeyframing
Tools rollout. This creates separate tracks for each
biped arm object. Deleting an upper arm key will
preser ve hand and finger keys.
Set Planted Key—Sets a biped key with IK
Blend=1, Join To Previous IK Key turned on, and
Object selected in the IK g roup.
In a Footstep or Freefrom animation, all footsteps
that do not slide should have Join To Previous IK
Key turned on.
Set Sliding K ey—Sets a biped key with IK
Blend=1, Join To Previous IK Key turned off, and
Object selected in the IK group. This creates a
sliding footstep. Sliding footsteps display in the
viewportswithalinerunningthroughthemiddle
of the footstep. Sliding footsteps are understood as
footsteps with moving IK constraints.
In a Footstep or Freeform animation, if the foot
slides rather than being pla nted, u se Set Sliding
Key .
Set Free K ey—Sets a biped key with IK
Blend=0, Join To Previous IK Key turned off, and
Body selected in the IK group.
In a Footstep or Freeform animation, a biped leg
inamovestateshouldhavea“free”key.
Traj ectori es—Showsandhidestrajectoriesfor
the selected biped object. You can edit keys on the
biped’s horizontal and vertical track by turning
on Trajectories, turning on Sub-Object, selecting
the horizontal or vertical center of mass track, and
transforming k eys in the viewports.
• You can bend the horizontal center of mass
trajectory around selected horizontal keys
by using the Bend Hori zontal spinner in the
Keyframing Tools rollout.
• Display trajectories to view how parameter
changes in the Key Info rollout affects the biped
motion. Changing Tension, Continuity, and
Bias in the Tcb g roup affects the tr ajectory
around the current key. Changing the value
of IK Blend for a hand or foot will affect the
trajectory b etween keys.
• Leave Trajectories on and turn on Show Buffer
Trajectories on the Motion Capture rollout
to compare a raw motion capture trajectory