cione-comp-lib
Version:
`$ yarn add cione-comp-lib` 或者 `$ npm i cione-comp-lib -S`
187 lines (186 loc) • 4.31 kB
JavaScript
var easingFuncs = {
linear: function(k) {
return k;
},
quadraticIn: function(k) {
return k * k;
},
quadraticOut: function(k) {
return k * (2 - k);
},
quadraticInOut: function(k) {
if ((k *= 2) < 1) {
return 0.5 * k * k;
}
return -0.5 * (--k * (k - 2) - 1);
},
cubicIn: function(k) {
return k * k * k;
},
cubicOut: function(k) {
return --k * k * k + 1;
},
cubicInOut: function(k) {
if ((k *= 2) < 1) {
return 0.5 * k * k * k;
}
return 0.5 * ((k -= 2) * k * k + 2);
},
quarticIn: function(k) {
return k * k * k * k;
},
quarticOut: function(k) {
return 1 - --k * k * k * k;
},
quarticInOut: function(k) {
if ((k *= 2) < 1) {
return 0.5 * k * k * k * k;
}
return -0.5 * ((k -= 2) * k * k * k - 2);
},
quinticIn: function(k) {
return k * k * k * k * k;
},
quinticOut: function(k) {
return --k * k * k * k * k + 1;
},
quinticInOut: function(k) {
if ((k *= 2) < 1) {
return 0.5 * k * k * k * k * k;
}
return 0.5 * ((k -= 2) * k * k * k * k + 2);
},
sinusoidalIn: function(k) {
return 1 - Math.cos(k * Math.PI / 2);
},
sinusoidalOut: function(k) {
return Math.sin(k * Math.PI / 2);
},
sinusoidalInOut: function(k) {
return 0.5 * (1 - Math.cos(Math.PI * k));
},
exponentialIn: function(k) {
return k === 0 ? 0 : Math.pow(1024, k - 1);
},
exponentialOut: function(k) {
return k === 1 ? 1 : 1 - Math.pow(2, -10 * k);
},
exponentialInOut: function(k) {
if (k === 0) {
return 0;
}
if (k === 1) {
return 1;
}
if ((k *= 2) < 1) {
return 0.5 * Math.pow(1024, k - 1);
}
return 0.5 * (-Math.pow(2, -10 * (k - 1)) + 2);
},
circularIn: function(k) {
return 1 - Math.sqrt(1 - k * k);
},
circularOut: function(k) {
return Math.sqrt(1 - --k * k);
},
circularInOut: function(k) {
if ((k *= 2) < 1) {
return -0.5 * (Math.sqrt(1 - k * k) - 1);
}
return 0.5 * (Math.sqrt(1 - (k -= 2) * k) + 1);
},
elasticIn: function(k) {
var s;
var a = 0.1;
var p = 0.4;
if (k === 0) {
return 0;
}
if (k === 1) {
return 1;
}
if (!a || a < 1) {
a = 1;
s = p / 4;
} else {
s = p * Math.asin(1 / a) / (2 * Math.PI);
}
return -(a * Math.pow(2, 10 * (k -= 1)) * Math.sin((k - s) * (2 * Math.PI) / p));
},
elasticOut: function(k) {
var s;
var a = 0.1;
var p = 0.4;
if (k === 0) {
return 0;
}
if (k === 1) {
return 1;
}
if (!a || a < 1) {
a = 1;
s = p / 4;
} else {
s = p * Math.asin(1 / a) / (2 * Math.PI);
}
return a * Math.pow(2, -10 * k) * Math.sin((k - s) * (2 * Math.PI) / p) + 1;
},
elasticInOut: function(k) {
var s;
var a = 0.1;
var p = 0.4;
if (k === 0) {
return 0;
}
if (k === 1) {
return 1;
}
if (!a || a < 1) {
a = 1;
s = p / 4;
} else {
s = p * Math.asin(1 / a) / (2 * Math.PI);
}
if ((k *= 2) < 1) {
return -0.5 * (a * Math.pow(2, 10 * (k -= 1)) * Math.sin((k - s) * (2 * Math.PI) / p));
}
return a * Math.pow(2, -10 * (k -= 1)) * Math.sin((k - s) * (2 * Math.PI) / p) * 0.5 + 1;
},
backIn: function(k) {
var s = 1.70158;
return k * k * ((s + 1) * k - s);
},
backOut: function(k) {
var s = 1.70158;
return --k * k * ((s + 1) * k + s) + 1;
},
backInOut: function(k) {
var s = 1.70158 * 1.525;
if ((k *= 2) < 1) {
return 0.5 * (k * k * ((s + 1) * k - s));
}
return 0.5 * ((k -= 2) * k * ((s + 1) * k + s) + 2);
},
bounceIn: function(k) {
return 1 - easingFuncs.bounceOut(1 - k);
},
bounceOut: function(k) {
if (k < 1 / 2.75) {
return 7.5625 * k * k;
} else if (k < 2 / 2.75) {
return 7.5625 * (k -= 1.5 / 2.75) * k + 0.75;
} else if (k < 2.5 / 2.75) {
return 7.5625 * (k -= 2.25 / 2.75) * k + 0.9375;
} else {
return 7.5625 * (k -= 2.625 / 2.75) * k + 0.984375;
}
},
bounceInOut: function(k) {
if (k < 0.5) {
return easingFuncs.bounceIn(k * 2) * 0.5;
}
return easingFuncs.bounceOut(k * 2 - 1) * 0.5 + 0.5;
}
};
var easingFuncs$1 = easingFuncs;
export { easingFuncs$1 as default };