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August 2001
Chicken Head Setup
by Kris Kapp -- page 6
(Your first dance
with the chicken? Get caught up with the first chicken scratch
here)
Continued from
page 5
Select the head then open the paint
weights tool. Toggle hold so that the weights are “held” for every joint
except the SkullJT. Next add the curve as an influence object. First
select the skin (the head) the select the influence object you are
adding (the eyebrow curve), then select skin>edit smooth skin> add
influence object with the following options: check the lock weights and
set the weighting to 0. Then using the paint weights tool un-toggle the
hold on the curve and paint the area of influence of the curve.
Painted influence
for eyebrow curve.
If you move the curve the eyebrow region of the mesh should deform. Next
we make the deformations a little more controllable by creating clusters
out of the curve CV’s. I made three clusters out of the CV’s to deform
the inside, middle, and outside of the eyebrow. I used the component
editor to change the weights of the curve points of the cluster. I
created the first cluster out of the first 4 CV’s. The middle cluster
out of the CV’s 2-5, and the last cluster out of the end 4 CV’s.
Cluster weighting
information for CV’s.
I might tweak these weights later, the important thing is set up the
curve as a deformer. I can make the eyebrow do just about anything with
these three clusters. We’ll do the same thing for eyelid. Make a curve
starting at the lower, inside corner of the eye that goes around the
entire eye opening. Use the duplicate the head and make it live trick to
make this easier. Group the curve to itself and parent this group to the
SkullJT.
Curve for eyelid
shape deformation.
Add this curve as an influence object and open the paint weight tool.
When you go to paint the weight values for this curve, make sure all the
other weights are locked except for the SkullJT.
Weight values for
eyelid curve influence object.
I just made on cluster out of all the CV’s of the eyelid curve. I’ll
make more when I set up the face controls but I need to fit the eye’s in
to make sure I get the proper shape. We can add clusters later now that
we have the influence object in place.
Weight values for
the eyelid cluster.
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