The frame schedule the capture loop plays out.
Owns the run; abort() on it stops the loop wherever it is.
abort()
Radians to advance per frame. Frame 0 does not rotate.
Whole in-and-out dolly cycles over the turn; 0 when the dolly is off.
Dolly phase for a frame index, in [0, 2π·dollyCycles).
[0, 2π·dollyCycles)
The frame schedule the capture loop plays out.