Easing transition compatible with Staring's Tween engine and Greensock's. Works like CSS's cubic-bezier.

You can create you own custom easing curves here.

Demo:

// option 1, register by name
Transitions.register("sharp", BezierEase.config(0.4,0,0.6,1));
Starling.juggler.tween( obj, 1, {y: 400, transition: "sharp" });
 
// option 2, use directly.
Starling.juggler.tween( obj, 1, {y: 400, transitionFunc: BezierEase.config(0,0,0.2,1) });

• 2018/04/23 21:57: First public version

References Curves:

Google Material transitions standard (0.4,0,0.2,1) deceleration (0,0,0.2,1) acceleration (0.4,0,1,1) sharp (0.4,0,0.6,1)

CSS Transitions linear (0,0,1,1) ease (0.25, 0.1, 0.25, 1.0) ease-in (0.42, 0, 1.0, 1.0) ease-out (0, 0, 0.58, 1.0) ease-in-out (0.42, 0, 0.58, 1.0)

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Feel free to edit this part of the page if you want to add information that's lacking in the above description.
Questions are better asked in the forum, though.