laya-coreui-es
Version:
laya核心库、ui库es版本，剔除了媒体、TTF等功能。基于 LayaAir-release_2.12.0 修改
187 lines (186 loc) • 6.29 kB
JavaScript
export class Ease {
static linearNone(t, b, c, d) {
return c * t / d + b;
}
static linearIn(t, b, c, d) {
return c * t / d + b;
}
static linearInOut(t, b, c, d) {
return c * t / d + b;
}
static linearOut(t, b, c, d) {
return c * t / d + b;
}
static bounceIn(t, b, c, d) {
return c - Ease.bounceOut(d - t, 0, c, d) + b;
}
static bounceInOut(t, b, c, d) {
if (t < d * 0.5)
return Ease.bounceIn(t * 2, 0, c, d) * .5 + b;
else
return Ease.bounceOut(t * 2 - d, 0, c, d) * .5 + c * .5 + b;
}
static bounceOut(t, b, c, d) {
if ((t /= d) < (1 / 2.75))
return c * (7.5625 * t * t) + b;
else if (t < (2 / 2.75))
return c * (7.5625 * (t -= (1.5 / 2.75)) * t + .75) + b;
else if (t < (2.5 / 2.75))
return c * (7.5625 * (t -= (2.25 / 2.75)) * t + .9375) + b;
else
return c * (7.5625 * (t -= (2.625 / 2.75)) * t + .984375) + b;
}
static backIn(t, b, c, d, s = 1.70158) {
return c * (t /= d) * t * ((s + 1) * t - s) + b;
}
static backInOut(t, b, c, d, s = 1.70158) {
if ((t /= d * 0.5) < 1)
return c * 0.5 * (t * t * (((s *= (1.525)) + 1) * t - s)) + b;
return c / 2 * ((t -= 2) * t * (((s *= (1.525)) + 1) * t + s) + 2) + b;
}
static backOut(t, b, c, d, s = 1.70158) {
return c * ((t = t / d - 1) * t * ((s + 1) * t + s) + 1) + b;
}
static elasticIn(t, b, c, d, a = 0, p = 0) {
var s;
if (t == 0)
return b;
if ((t /= d) == 1)
return b + c;
if (!p)
p = d * .3;
if (!a || (c > 0 && a < c) || (c < 0 && a < -c)) {
a = c;
s = p / 4;
}
else
s = p / Ease.PI2 * Math.asin(c / a);
return -(a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t * d - s) * Ease.PI2 / p)) + b;
}
static elasticInOut(t, b, c, d, a = 0, p = 0) {
var s;
if (t == 0)
return b;
if ((t /= d * 0.5) == 2)
return b + c;
if (!p)
p = d * (.3 * 1.5);
if (!a || (c > 0 && a < c) || (c < 0 && a < -c)) {
a = c;
s = p / 4;
}
else
s = p / Ease.PI2 * Math.asin(c / a);
if (t < 1)
return -.5 * (a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t * d - s) * Ease.PI2 / p)) + b;
return a * Math.pow(2, -10 * (t -= 1)) * Math.sin((t * d - s) * Ease.PI2 / p) * .5 + c + b;
}
static elasticOut(t, b, c, d, a = 0, p = 0) {
var s;
if (t == 0)
return b;
if ((t /= d) == 1)
return b + c;
if (!p)
p = d * .3;
if (!a || (c > 0 && a < c) || (c < 0 && a < -c)) {
a = c;
s = p / 4;
}
else
s = p / Ease.PI2 * Math.asin(c / a);
return (a * Math.pow(2, -10 * t) * Math.sin((t * d - s) * Ease.PI2 / p) + c + b);
}
static strongIn(t, b, c, d) {
return c * (t /= d) * t * t * t * t + b;
}
static strongInOut(t, b, c, d) {
if ((t /= d * 0.5) < 1)
return c * 0.5 * t * t * t * t * t + b;
return c * 0.5 * ((t -= 2) * t * t * t * t + 2) + b;
}
static strongOut(t, b, c, d) {
return c * ((t = t / d - 1) * t * t * t * t + 1) + b;
}
static sineInOut(t, b, c, d) {
return -c * 0.5 * (Math.cos(Math.PI * t / d) - 1) + b;
}
static sineIn(t, b, c, d) {
return -c * Math.cos(t / d * Ease.HALF_PI) + c + b;
}
static sineOut(t, b, c, d) {
return c * Math.sin(t / d * Ease.HALF_PI) + b;
}
static quintIn(t, b, c, d) {
return c * (t /= d) * t * t * t * t + b;
}
static quintInOut(t, b, c, d) {
if ((t /= d * 0.5) < 1)
return c * 0.5 * t * t * t * t * t + b;
return c * 0.5 * ((t -= 2) * t * t * t * t + 2) + b;
}
static quintOut(t, b, c, d) {
return c * ((t = t / d - 1) * t * t * t * t + 1) + b;
}
static quartIn(t, b, c, d) {
return c * (t /= d) * t * t * t + b;
}
static quartInOut(t, b, c, d) {
if ((t /= d * 0.5) < 1)
return c * 0.5 * t * t * t * t + b;
return -c * 0.5 * ((t -= 2) * t * t * t - 2) + b;
}
static quartOut(t, b, c, d) {
return -c * ((t = t / d - 1) * t * t * t - 1) + b;
}
static cubicIn(t, b, c, d) {
return c * (t /= d) * t * t + b;
}
static cubicInOut(t, b, c, d) {
if ((t /= d * 0.5) < 1)
return c * 0.5 * t * t * t + b;
return c * 0.5 * ((t -= 2) * t * t + 2) + b;
}
static cubicOut(t, b, c, d) {
return c * ((t = t / d - 1) * t * t + 1) + b;
}
static quadIn(t, b, c, d) {
return c * (t /= d) * t + b;
}
static quadInOut(t, b, c, d) {
if ((t /= d * 0.5) < 1)
return c * 0.5 * t * t + b;
return -c * 0.5 * ((--t) * (t - 2) - 1) + b;
}
static quadOut(t, b, c, d) {
return -c * (t /= d) * (t - 2) + b;
}
static expoIn(t, b, c, d) {
return (t == 0) ? b : c * Math.pow(2, 10 * (t / d - 1)) + b - c * 0.001;
}
static expoInOut(t, b, c, d) {
if (t == 0)
return b;
if (t == d)
return b + c;
if ((t /= d * 0.5) < 1)
return c * 0.5 * Math.pow(2, 10 * (t - 1)) + b;
return c * 0.5 * (-Math.pow(2, -10 * --t) + 2) + b;
}
static expoOut(t, b, c, d) {
return (t == d) ? b + c : c * (-Math.pow(2, -10 * t / d) + 1) + b;
}
static circIn(t, b, c, d) {
return -c * (Math.sqrt(1 - (t /= d) * t) - 1) + b;
}
static circInOut(t, b, c, d) {
if ((t /= d * 0.5) < 1)
return -c * 0.5 * (Math.sqrt(1 - t * t) - 1) + b;
return c * 0.5 * (Math.sqrt(1 - (t -= 2) * t) + 1) + b;
}
static circOut(t, b, c, d) {
return c * Math.sqrt(1 - (t = t / d - 1) * t) + b;
}
}
Ease.HALF_PI = Math.PI * 0.5;
Ease.PI2 = Math.PI * 2;