epsilon
Description:
Precision of the spring.
The level of precision used to determine when the animation has come to a rest, that is, when the amplitude of the oscillations becomes smaller than this value.
If the epsilon value is too small, the animation will take a long time to stop after the animated value has stopped visibly changing.
If the epsilon value is too large, the animation will end prematurely.
The default value is 0.001.