9

928 Chapter 14: character studio
3.
Turn of f Move All Mode .
To reposition a biped with limbs attached to an
Object Space obj ect (I K att achment):
1.
Create a dummy object and position it near the
biped’s center of mass.
2. On the main toolbar, use Select And
Link to link both the Object Space object and
the biped’s center of mass to the dummy object.
Impor tant: Make sure you link both at the same
frame.
3.
Move the dummy object to reposition
the biped.
To reposition a biped with limbs atta ched to world
space (IK atta chment):
A biped with limbs in world space has an IK Blend
setting of 1.0 for e
ach limb, w ith no Object Space
object specified. For example, when you plant the
feet of a biped so its knees will bend w hen you
lower its center o
f mass, or you plant the hands of a
biped doing pushups, typically you do not specify
an Object Space object.
1. Create a dummy object near the biped’s center
of mass.
2. On the main toolbar, use Select And
Link to link both the biped’s center of mass and
the biped part
with planted keys to the dummy
object.
Tip: Tobeonthesafeside,youcandouble-click
the upper limb and link a ll of the limb to the
dummy.
Impor tant: M ake sure you create all links at the
same frame.
3.
Move the dummy object to reposition
the biped.
Note: Depending on the animation, at some of
attached object’s keys you mig ht need to set IK
Blend back to 0.0.Otherwise,thelimbcanget
“stuck” in a po sture.
To reposition a biped animated with a motion flow
scr ipt:
By default, the biped’s position at the beginning of
a motion flow script is the position specified by the
first BIP or STP file in the script.
1. Turn on Motion Flow mode.
2. On the Motion Flow rollout, use Start Position
X, Start Position Y, and Start Position Z to
change the XYZ position of the biped.
3. Turn off Motion F low m ode.
To use layer s to reposition a biped with fr eeform
animation:
UsinglayersandAutoKeywhenyoureposition
a freeform biped gives you some editing choices,
as described below.
1. On the Layers rollout, click Create Layer.
Note: If the biped uses footstep animation, the
MoveAllModebuttonwillbecomeunavailable.
2. Turn on Auto Key.
3. Reposition the biped as descr ibed in the
previous procedure, ”To reposition a f reeform
animation (with no IK attachment) or a
footstep animation.”
4. Turn of f Auto Key.
You now have these aids to animation editing:
• Lower layers show the biped’s original
position, as does the red stick figure.
•
Clicking Snap Set Key on the Layers
rollout snaps the biped to its position on the
previous layer, and sets a position key. The