update method

@override void update(double dt)

Implementation

@override
void update(double dt) {
  super.update(dt);
  double overshoot = 1.70158 * 1.525;
  double value = 0;
  dt = dt * 2;
  if (dt < 1) {
    value = (dt * dt * ((overshoot + 1) * dt - overshoot)) / 2;
  } else {
    dt = dt - 2;
    value = (dt * dt * ((overshoot + 1) * dt + overshoot)) / 2 + 1;
  }
  innerAction.update(value);
}