cf_quat_nlerp¶
Category: math
GitHub: cute_math3d.h
Normalized linear interpolation between two rotations -- slerp's cheap cousin.
| Parameters | Description |
|---|---|
a |
The rotation at t == 0. |
b |
The rotation at t == 1. |
t |
The interpolant, from 0 to 1. |
Return Value¶
Returns a unit quaternion along the shortest arc from a to b.
Remarks¶
Same endpoints and same arc as cf_quat_slerp, but the angular velocity is not
constant across t. For small differences -- animation keyframes, per-frame
smoothing -- the deviation is invisible and this is measurably cheaper.