| a | Start unit quaternion value, returned when t = 0. |
| b | End unit quaternion value, returned when t = 1. |
| t | Interpolation ratio. Value is unclamped. |
Quaternion
A unit quaternion spherically interpolated between unit quaternions a and b.
Spherically linear interpolates between unit quaternions a and b by t.
Additional resources: LerpUnclamped, Slerp.