2009

Table Of Contents
Refining deformation effects
The combination of a cluster and blend shape is ideal for facial animation
because it lets you tune various subtle deformations. A few common techniques
follow.
In the box below the slider of the Blend Shape editor, you can enter a
numerical value below 0 to invert the deformations, or above 1 to amplify
the deformations. For example, -1 creates a frown, while 1.6 creates a
brimming smile:
With or without changing the Blend Shape slider, you can move, rotate,
and scale the cluster handle to modify the blend shape. The following
figure shows some examples. The face you created will be slightly different
because your original smile is different.
You can use the Paint Cluster Weights tool again to change cluster weights
when the cluster and blend shape editing deforms certain regions
340 | Chapter 7 Character Setup