38 lines
660 B
JavaScript
38 lines
660 B
JavaScript
var overshoot = 1.70158;
|
|
|
|
export var backIn = (function custom(s) {
|
|
s = +s;
|
|
|
|
function backIn(t) {
|
|
return (t = +t) * t * (s * (t - 1) + t);
|
|
}
|
|
|
|
backIn.overshoot = custom;
|
|
|
|
return backIn;
|
|
})(overshoot);
|
|
|
|
export var backOut = (function custom(s) {
|
|
s = +s;
|
|
|
|
function backOut(t) {
|
|
return --t * t * ((t + 1) * s + t) + 1;
|
|
}
|
|
|
|
backOut.overshoot = custom;
|
|
|
|
return backOut;
|
|
})(overshoot);
|
|
|
|
export var backInOut = (function custom(s) {
|
|
s = +s;
|
|
|
|
function backInOut(t) {
|
|
return ((t *= 2) < 1 ? t * t * ((s + 1) * t - s) : (t -= 2) * t * ((s + 1) * t + s) + 2) / 2;
|
|
}
|
|
|
|
backInOut.overshoot = custom;
|
|
|
|
return backInOut;
|
|
})(overshoot);
|