EaseBackIn method

double EaseBackIn(
  1. num t,
  2. num b,
  3. num c,
  4. num d,
)

Back In

Implementation

double EaseBackIn(num t, num b, num c, num d) => run(
  () => _debugLabel('EaseBackIn', t, b, c, d),
  () {
    final s = 1.70158;
    final postFix = t/=d;
    return (c*(postFix)*t*((s + 1.0)*t - s) + b);
  },
);