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| [Figures
20-25] Blend shapes that affect larger, less localized areas of the
face. |
|
I was careful to try to keep the mouth blend shapes from affecting any
other regions, and the eye blend shapes localized to the eye region. In
this way, these particular shapes were hybrid global/local blend
shapes. They affected an entire area, but only the area intended to
animate, not the entire face.
When I was creating the localized blend shapes, the areas that were
affected stayed on one side of the face. There were many shapes not
shown here that broke each part of the face into even smaller regions.
These regions were isolated to areas like one eye (Figures 26 and 27),
one eyebrow (Figure 29) or one corner of the mouth (Figure 30).
 |
|
| [Figures
26-31] Localized blend shapes. |
|
Most blend shapes are modeled about 20% past the most extreme point
where the animator is expected to use them. This allows for more
elastic animation and gives greater flexibility when combining blend
shapes.
