Const
Back ease-in, (s + 1)t³ − s·t² with s = BACK_OVERSHOOT.
(s + 1)t³ − s·t²
s =
Dips below 0 early (anticipation) before accelerating to 1. The t === 1 guard is required: (s + 1) − s rounds to 0.9999999999999998 for the pinned s.
t === 1
(s + 1) − s
0.9999999999999998
s
Back ease-in,
(s + 1)t³ − s·t²withs =BACK_OVERSHOOT.Dips below 0 early (anticipation) before accelerating to 1. The
t === 1guard is required:(s + 1) − srounds to0.9999999999999998for the pinneds.