158 lines
4.8 KiB
JavaScript
158 lines
4.8 KiB
JavaScript
const easings = {
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easeLinear: (t, b, c, d) => c * t / d + b,
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// ease-in
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easeInQuad: (t, b, c, d) =>
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c * (t /= d) * t + b,
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easeInCubic: (t, b, c, d) =>
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c * (t /= d) * t * t + b,
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easeInQuart: (t, b, c, d) =>
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c * (t /= d) * t * t * t + b,
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easeInQuint: (t, b, c, d) =>
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c * (t /= d) * t * t * t * t + b,
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easeInSine: (t, b, c, d) =>
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-c * Math.cos(t / d * (Math.PI / 2)) + c + b,
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easeInExpo: (t, b, c, d) =>
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t == 0 ? b : c * Math.pow(2, 10 * (t / d - 1)) + b,
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easeInCirc: (t, b, c, d) =>
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-c * (Math.sqrt(1 - (t /= d) * t) - 1) + b,
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easeInElastic: (t, b, c, d) => {
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var s = 1.70158;
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var p = 0;
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var a = c;
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if (t == 0) return b;
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if ((t /= d) == 1) return b + c;
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if (!p) p = d * .3;
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if (a < Math.abs(c)) {
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a = c;
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var s = p / 4;
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} else var s = p / (2 * Math.PI) * Math.asin(c / a);
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return -(a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t * d - s) * (2 * Math.PI) / p)) + b;
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},
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easeInBack: (t, b, c, d, s) => {
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if (s == undefined) s = 1.70158;
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return c * (t /= d) * t * ((s + 1) * t - s) + b;
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},
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// ease-out
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easeOutQuad: (t, b, c, d) =>
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-c * (t /= d) * (t - 2) + b,
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easeOutCubic: (t, b, c, d) =>
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c * ((t = t / d - 1) * t * t + 1) + b,
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easeOutQuart: (t, b, c, d) =>
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-c * ((t = t / d - 1) * t * t * t - 1) + b,
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easeOutQuint: (t, b, c, d) =>
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c * ((t = t / d - 1) * t * t * t * t + 1) + b,
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easeOutSine: (t, b, c, d) =>
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c * Math.sin(t / d * (Math.PI / 2)) + b,
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easeOutExpo: (t, b, c, d) =>
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t == d ? b + c : c * (-Math.pow(2, -10 * t / d) + 1) + b,
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easeOutCirc: (t, b, c, d) =>
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c * Math.sqrt(1 - (t = t / d - 1) * t) + b,
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easeOutElastic: (t, b, c, d) => {
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var s = 1.70158;
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var p = 0;
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var a = c;
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if (t == 0) return b;
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if ((t /= d) == 1) return b + c;
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if (!p) p = d * .3;
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if (a < Math.abs(c)) {
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a = c;
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var s = p / 4;
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} else var s = p / (2 * Math.PI) * Math.asin(c / a);
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return a * Math.pow(2, -10 * t) * Math.sin((t * d - s) * (2 * Math.PI) / p) + c + b;
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},
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easeOutBack: (t, b, c, d, s) => {
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if (s == undefined) s = 1.70158;
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return c * ((t = t / d - 1) * t * ((s + 1) * t + s) + 1) + b;
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},
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easeOutBounce: (t, b, c, d) => {
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if ((t /= d) < (1 / 2.75)) {
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return c * (7.5625 * t * t) + b;
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} else if (t < (2 / 2.75)) {
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return c * (7.5625 * (t -= (1.5 / 2.75)) * t + .75) + b;
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} else if (t < (2.5 / 2.75)) {
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return c * (7.5625 * (t -= (2.25 / 2.75)) * t + .9375) + b;
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} else {
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return c * (7.5625 * (t -= (2.625 / 2.75)) * t + .984375) + b;
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}
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},
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// ease-in-out
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easeInOutQuad: (t, b, c, d) => {
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if ((t /= d / 2) < 1) return c / 2 * t * t + b;
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return -c / 2 * ((--t) * (t - 2) - 1) + b;
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},
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easeInOutCubic: (t, b, c, d) => {
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if ((t /= d / 2) < 1) return c / 2 * t * t * t + b;
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return c / 2 * ((t -= 2) * t * t + 2) + b;
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},
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easeInOutQuart: (t, b, c, d) => {
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if ((t /= d / 2) < 1) return c / 2 * t * t * t * t + b;
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return -c / 2 * ((t -= 2) * t * t * t - 2) + b;
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},
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easeInOutQuint: (t, b, c, d) => {
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if ((t /= d / 2) < 1) return c / 2 * t * t * t * t * t + b;
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return c / 2 * ((t -= 2) * t * t * t * t + 2) + b;
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},
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easeInOutSine: (t, b, c, d) =>
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-c / 2 * (Math.cos(Math.PI * t / d) - 1) + b,
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easeInOutExpo: (t, b, c, d) => {
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if (t == 0) return b;
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if (t == d) return b + c;
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if ((t /= d / 2) < 1) return c / 2 * Math.pow(2, 10 * (t - 1)) + b;
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return c / 2 * (-Math.pow(2, -10 * --t) + 2) + b;
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},
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easeInOutCirc: (t, b, c, d) => {
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if ((t /= d / 2) < 1) return -c / 2 * (Math.sqrt(1 - t * t) - 1) + b;
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return c / 2 * (Math.sqrt(1 - (t -= 2) * t) + 1) + b;
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},
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easeInOutElastic: (t, b, c, d) => {
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var s = 1.70158;
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var p = 0;
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var a = c;
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if (t == 0) return b;
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if ((t /= d / 2) == 2) return b + c;
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if (!p) p = d * (.3 * 1.5);
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if (a < Math.abs(c)) {
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a = c;
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var s = p / 4;
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} else var s = p / (2 * Math.PI) * Math.asin(c / a);
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if (t < 1) return -.5 * (a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t * d - s) * (2 * Math.PI) / p)) + b;
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return a * Math.pow(2, -10 * (t -= 1)) * Math.sin((t * d - s) * (2 * Math.PI) / p) * .5 + c + b;
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},
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easeInOutBack: (t, b, c, d, s) => {
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if (s == undefined) s = 1.70158;
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if ((t /= d / 2) < 1) return c / 2 * (t * t * (((s *= (1.525)) + 1) * t - s)) + b;
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return c / 2 * ((t -= 2) * t * (((s *= (1.525)) + 1) * t + s) + 2) + b;
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},
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}; |