The following parameters control the easing curve. When the easing type is "b", two control points can be provided as parameters for finer control.
The default value of the control point is 0.33,0,0.67,1。
You can try your cubic bezier at this site: cubic-bezier.com
In addition to the easing types that come with Arcaea, the AFF Toolbox comes with a large number of commonly used easing types pre-built, which you can preview at this site: easings.net