If you are trying to do Material Design animations the following are the main easing values for your bezier-curves.
materialLayer.states.animationOptions = curve: "bezier-curve"
When something exists on screen already and moves to another position on screen, 40% out of first frame and 80% into second frame:
curveOptions: [0.4, 0, 0.2, 1]
When something comes from offscreen it has 0% out of the first frame and 80% in on the second frame:
curveOptions: [0, 0, 0.2, 1]
When something leaves the screen it has 40% out of the first frame and 0% in on the second frame:
curveOptions: [0.4, 0, 1, 1]
This will make a nice snippet. Thanks!