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392 Chapter 5: Creating Geometry
Stretch Factor In formation
Under the Cor rect Negative Stretch options is a
text display giving information about the number
of bones selected and the respective stretch fac tor
forallthreeaxes.Ifmorethanoneboneisselected,
the Stretch Factor text displays
undefined .
Note: The Stretch Factor text only updates when
you are in
Bone Edit Mode (page 1–388) .
Stretch and Axis Options
Stretch—Determines w hat kind of stretch takes
place when the child bone is transformed and
Freeze Length is off. Default=Scale.
•
None—No stretch t akes place.
•
Scale—Lets the bone scale. The stretch happens
along one axis.
•
Squash—Lets the b one squash. The bone gets
fatter as it gets shorter, and thinner as it gets
longer.
Axis—Determines the axis used for the stretch.
•
X/Y /Z—Choose the axis for sca ling or s quashing.
•
Flip—Flips the stretch along the selected axis.
Ring Array System
Create panel > Systems > Ring Array button
The Ring Array object consists of a dummy object
(page 2–15)
surrounded by a ring of boxes. You
can arrange the boxes in the r ing along a sine
curve, vary their number, and animate the ring
array’s parameters. You can also replace the boxes
w ith other objects using Track View, as described
in the Procedures section, below.
Example of ring array
Procedures
To create t he r ing ar r ay sy s tem:
1.
On the Create p anel, click Systems,
and then click Ring Array.
2. Drag in a viewport to set the center and radius
of the array.
Adummyobjectappearsatthecenter. By
default, four boxes are evenly spaced in a circle
around it.
To animate the r ing array:
1.
Tur n on Auto Ke y.
2. Move to a nonzero frame.
3. Adjust the r ing array parameters.
You c an’t animate t he number of boxes in the
ring.
4. Repeat steps 2 and 3 for additional keyframes.
Note: To animate the ring arr ay after creation,
use the Motion panel, not the Modify panel.
To put other k inds of objects in the r ing:
You can use either version of Track View: Curve
Editor or Dope Sheet.