8

Editing Biped Keys 767
Set one key when you want the attachment to
begin, and a second key when y ou want the
attachment to stop. This defines an Object
spaceinterval,thedurationofatemporary
attachment.
7. On the frame that defines t he end of an
attachment interval, set IK Blend to 1.0,choose
theObjectoption,andturnonJointoPrevIK
Key. You can also click Set Planted Key to set
these parameters all at once.
8. On frames where you don’t want the
hand or foot to follow the object, set a key, set
IK Blend to 0.0 and choose the Body option .
You can also click Set Free Key to set these
parameters all at once.
To anchor a hand or foot:
You can use anchoring to temporarily look a hand
or foot to a specific point in space while you are
animating IK attachments.
1. Move and rotate the hand or foot into the
desired posture.
2. On the Keyframing Tools rollout,
click the button for the limb you want to
anchor: Anchor Rig ht Arm, Anchor Left Arm,
Anchor Right Leg, or Anchor Left Leg.
Note: The arm or leg you select beforehand does
notactuallyhavetobethesameasthearmor
leg you are anchoring.
3. Set keys for the arm or leg as described in the
previous procedure.
Note: You can also use anchors to hold a foot
or hand in position while you render the
animation. However , be aware that anchors
are turned off whe n you close the MAX file. If
you want to use anchors from one session to
the next, you must turn them on again the next
time you open the file.
Edi ti ng Fr eefor m Ani mat ion
Editing B iped K eys
You can move back and forth between keys
by clicking the Previous Key and Next Key buttons
on the K ey Info rollout. The fields to the right of
these buttons indicate the key number and frame
number.
As with other 3ds Max objects, you can also
move back and forth between keys by turning
on the 3ds Max Key Mode Toggle, selecting an
element associated with a given track, and then
usingthe3dsMaxbuttonsNextFrameand
Previous Frame. For example, you can view keys,
move between them, and set keys for a right arm
track if any of the right arm’s objects (clavicle,
upperarm,lowerarm,hand,fingers)areselected.
Or use the < and > keys on the keyboard to move
back and forth between keys in Key Mode.
You can delete a key by clicking Delete Key
in the Key Info rollout. The biped part that has the
key must be selected, and the current fr ame must
be the keyframe you want to delete. Keys that are
locked (appearing in red in Track View) cannot
be deleted.
Tip: When you’ve selected the biped part you
wanttotransform,clickLockSelectionSetonthe
3ds Max prompt line. Now you can transform the
part without accidentally select ing a different part
of the biped. The default keyboard shortcut for
Lock Selection Set is the SPACEBAR.