OptionaldampingHow strongly motion is resisted. Higher settles sooner, and past critical stops any overshoot.
OptionalfromWhere the motion starts.
OptionalmassInertia. Heavier is slower to start and slower to stop.
OptionalstiffnessHow hard it pulls toward the target.
OptionaltoWhere it comes to rest.
OptionalvelocitySpeed at t = 0, in units per second. Positive points at the target.
A damped spring, described the way animation libraries describe one.