The coefficient describing closure of the lips independent of jaw position.
- iOS 11.0+
This coefficient describes a closing of the lips without relation to the position of the jaw (the
jaw coefficient), so some values of the
mouth coefficient can produce unrealistic facial expressions unless other coefficients are also set to realistic values.
The figure below shows a face geometry (see
ARSCNFace) in three states:
Setting only the
1, while keeping all other coefficient values (including
Setting both the
1, while keeping all other coefficient values at