x method

@override double x(double time)

The position of the object in the simulation at the given time.

Implementation

@override
double x(double time) {
  if (startValue.isNaN) return endValue;
  if (startValue == endValue) return startValue;
  double normalizedTime = time / duration;
  double normalizedVelocity =
      startVelocity / (endValue - startValue) * duration;
  double normalizedOutput = normalizedVelocity > 2
      ? linearAccelerationEaseInOutWithInitialVelocity(
          normalizedTime, normalizedVelocity)
      : constantAccelerationEaseInOutWithInitialVelocity(
          normalizedTime, normalizedVelocity);
  return startValue + normalizedOutput * (endValue - startValue);
}