count-up-es-react/es/CountUp/utils/index.js

CountUp AnimationNumber

// 动画文件
var linear = function linear(t, b, c, d) {
  return c * t / d + b;
};

function easeInQuad(t, b, c, d) {
  return c * (t /= d) * t + b;
}

function easeOutQuad(t, b, c, d) {
  return -c * (t /= d) * (t - 2) + b;
}

function easeInOutQuad(t, b, c, d) {
  if ((t /= d / 2) < 1) return c / 2 * t * t + b;
  return -c / 2 * (--t * (t - 2) - 1) + b;
}

function easeInCubic(t, b, c, d) {
  return c * (t /= d) * t * t + b;
}

function easeOutCubic(t, b, c, d) {
  return c * ((t = t / d - 1) * t * t + 1) + b;
}

function easeInOutCubic(t, b, c, d) {
  if ((t /= d / 2) < 1) return c / 2 * t * t * t + b;
  return c / 2 * ((t -= 2) * t * t + 2) + b;
}

function easeInQuart(t, b, c, d) {
  return c * (t /= d) * t * t * t + b;
}

function easeOutQuart(t, b, c, d) {
  return -c * ((t = t / d - 1) * t * t * t - 1) + b;
}

function easeInOutQuart(t, b, c, d) {
  if ((t /= d / 2) < 1) return c / 2 * t * t * t * t + b;
  return -c / 2 * ((t -= 2) * t * t * t - 2) + b;
}

function easeInQuint(t, b, c, d) {
  return c * (t /= d) * t * t * t * t + b;
}

function easeOutQuint(t, b, c, d) {
  return c * ((t = t / d - 1) * t * t * t * t + 1) + b;
}

function easeInOutQuint(t, b, c, d) {
  if ((t /= d / 2) < 1) return c / 2 * t * t * t * t * t + b;
  return c / 2 * ((t -= 2) * t * t * t * t + 2) + b;
}

function easeInSine(t, b, c, d) {
  return -c * Math.cos(t / d * (Math.PI / 2)) + c + b;
}

function easeOutSine(t, b, c, d) {
  return c * Math.sin(t / d * (Math.PI / 2)) + b;
}

function easeInOutSine(t, b, c, d) {
  return -c / 2 * (Math.cos(Math.PI * t / d) - 1) + b;
}

function easeInExpo(t, b, c, d) {
  return t === 0 ? b : c * Math.pow(2, 10 * (t / d - 1)) + b;
}

function easeOutExpo(t, b, c, d) {
  return t === d ? b + c : c * (-Math.pow(2, -10 * t / d) + 1) + b;
}

function easeInOutExpo(t, b, c, d) {
  if (t === 0) return b;
  if (t === d) return b + c;
  if ((t /= d / 2) < 1) return c / 2 * Math.pow(2, 10 * (t - 1)) + b;
  return c / 2 * (-Math.pow(2, -10 * --t) + 2) + b;
}

function easeInCirc(t, b, c, d) {
  return -c * (Math.sqrt(1 - (t /= d) * t) - 1) + b;
}

function easeOutCirc(t, b, c, d) {
  return c * Math.sqrt(1 - (t = t / d - 1) * t) + b;
}

function easeInOutCirc(t, b, c, d) {
  if ((t /= d / 2) < 1) return -c / 2 * (Math.sqrt(1 - t * t) - 1) + b;
  return c / 2 * (Math.sqrt(1 - (t -= 2) * t) + 1) + b;
}

function easeInElastic(t, b, c, d) {
  var s = 1.70158;
  var p = 0;
  var a = c;
  if (t === 0) return b;
  if ((t /= d) === 1) return b + c;
  if (!p) p = d * 0.3;

  if (a < Math.abs(c)) {
    a = c;
    s = p / 4;
  } else s = p / (2 * Math.PI) * Math.asin(c / a);

  return -(a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t * d - s) * (2 * Math.PI) / p)) + b;
}

function easeOutElastic(t, b, c, d) {
  var s = 1.70158;
  var p = 0;
  var a = c;
  if (t === 0) return b;
  if ((t /= d) === 1) return b + c;
  if (!p) p = d * 0.3;

  if (a < Math.abs(c)) {
    a = c;
    s = p / 4;
  } else s = p / (2 * Math.PI) * Math.asin(c / a);

  return a * Math.pow(2, -10 * t) * Math.sin((t * d - s) * (2 * Math.PI) / p) + c + b;
}

function easeInOutElastic(t, b, c, d) {
  var s = 1.70158;
  var p = 0;
  var a = c;
  if (t === 0) return b;
  if ((t /= d / 2) === 2) return b + c;
  if (!p) p = d * (0.3 * 1.5);

  if (a < Math.abs(c)) {
    a = c;
    s = p / 4;
  } else s = p / (2 * Math.PI) * Math.asin(c / a);

  if (t < 1) return -0.5 * (a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t * d - s) * (2 * Math.PI) / p)) + b;
  return a * Math.pow(2, -10 * (t -= 1)) * Math.sin((t * d - s) * (2 * Math.PI) / p) * 0.5 + c + b;
}

function easeOutBounce(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 + 0.75) + b;
  } else if (t < 2.5 / 2.75) {
    return c * (7.5625 * (t -= 2.25 / 2.75) * t + 0.9375) + b;
  } else {
    return c * (7.5625 * (t -= 2.625 / 2.75) * t + 0.984375) + b;
  }
}

export var easings = {
  easeInCubic: easeInCubic,
  easeOutCubic: easeOutCubic,
  linear: linear,
  easeInQuad: easeInQuad,
  easeOutQuad: easeOutQuad,
  easeInOutQuad: easeInOutQuad,
  easeOutBounce: easeOutBounce,
  easeInOutCubic: easeInOutCubic,
  easeInOutElastic: easeInOutElastic,
  easeOutElastic: easeOutElastic,
  easeInElastic: easeInElastic,
  easeInOutCirc: easeInOutCirc,
  easeInOutExpo: easeInOutExpo,
  easeOutExpo: easeOutExpo,
  easeInQuart: easeInQuart,
  easeOutQuart: easeOutQuart,
  easeOutCirc: easeOutCirc,
  easeInCirc: easeInCirc,
  easeInExpo: easeInExpo,
  easeInOutSine: easeInOutSine,
  easeInOutQuart: easeInOutQuart,
  easeOutSine: easeOutSine,
  easeInSine: easeInSine,
  easeInQuint: easeInQuint,
  easeOutQuint: easeOutQuint,
  easeInOutQuint: easeInOutQuint
};
export var defaultEasing = easings.easeOutQuint;
export var getEasing = function getEasing(easing) {
  return typeof easing === 'function' ? easing : easings[easing];
};