bc518174
 王天杨
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function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); }
function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
function _iterableToArrayLimit(r, l) { var t = null == r ? null : "undefined" != typeof Symbol && r[Symbol.iterator] || r["@@iterator"]; if (null != t) { var e, n, i, u, a = [], f = !0, o = !1; try { if (i = (t = t.call(r)).next, 0 === l) { if (Object(t) !== t) return; f = !1; } else for (; !(f = (e = i.call(t)).done) && (a.push(e.value), a.length !== l); f = !0); } catch (r) { o = !0, n = r; } finally { try { if (!f && null != t.return && (u = t.return(), Object(u) !== u)) return; } finally { if (o) throw n; } } return a; } }
function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }
function _toConsumableArray(arr) { return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread(); }
function _nonIterableSpread() { throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
function _iterableToArray(iter) { if (typeof Symbol !== "undefined" && iter[Symbol.iterator] != null || iter["@@iterator"] != null) return Array.from(iter); }
function _arrayWithoutHoles(arr) { if (Array.isArray(arr)) return _arrayLikeToArray(arr); }
function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i]; return arr2; }
import { warn } from './util';
var ACCURACY = 1e-4;
var cubicBezierFactor = function cubicBezierFactor(c1, c2) {
return [0, 3 * c1, 3 * c2 - 6 * c1, 3 * c1 - 3 * c2 + 1];
};
var multyTime = function multyTime(params, t) {
return params.map(function (param, i) {
return param * Math.pow(t, i);
}).reduce(function (pre, curr) {
return pre + curr;
});
};
var cubicBezier = function cubicBezier(c1, c2) {
return function (t) {
var params = cubicBezierFactor(c1, c2);
return multyTime(params, t);
};
};
var derivativeCubicBezier = function derivativeCubicBezier(c1, c2) {
return function (t) {
var params = cubicBezierFactor(c1, c2);
var newParams = [].concat(_toConsumableArray(params.map(function (param, i) {
return param * i;
}).slice(1)), [0]);
return multyTime(newParams, t);
};
};
// calculate cubic-bezier using Newton's method
export var configBezier = function configBezier() {
for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
args[_key] = arguments[_key];
}
var x1 = args[0],
y1 = args[1],
x2 = args[2],
y2 = args[3];
if (args.length === 1) {
switch (args[0]) {
case 'linear':
x1 = 0.0;
y1 = 0.0;
x2 = 1.0;
y2 = 1.0;
break;
case 'ease':
x1 = 0.25;
y1 = 0.1;
x2 = 0.25;
y2 = 1.0;
break;
case 'ease-in':
x1 = 0.42;
y1 = 0.0;
x2 = 1.0;
y2 = 1.0;
break;
case 'ease-out':
x1 = 0.42;
y1 = 0.0;
x2 = 0.58;
y2 = 1.0;
break;
case 'ease-in-out':
x1 = 0.0;
y1 = 0.0;
x2 = 0.58;
y2 = 1.0;
break;
default:
{
var easing = args[0].split('(');
if (easing[0] === 'cubic-bezier' && easing[1].split(')')[0].split(',').length === 4) {
var _easing$1$split$0$spl = easing[1].split(')')[0].split(',').map(function (x) {
return parseFloat(x);
});
var _easing$1$split$0$spl2 = _slicedToArray(_easing$1$split$0$spl, 4);
x1 = _easing$1$split$0$spl2[0];
y1 = _easing$1$split$0$spl2[1];
x2 = _easing$1$split$0$spl2[2];
y2 = _easing$1$split$0$spl2[3];
} else {
warn(false, '[configBezier]: arguments should be one of ' + "oneOf 'linear', 'ease', 'ease-in', 'ease-out', " + "'ease-in-out','cubic-bezier(x1,y1,x2,y2)', instead received %s", args);
}
}
}
}
warn([x1, x2, y1, y2].every(function (num) {
return typeof num === 'number' && num >= 0 && num <= 1;
}), '[configBezier]: arguments should be x1, y1, x2, y2 of [0, 1] instead received %s', args);
var curveX = cubicBezier(x1, x2);
var curveY = cubicBezier(y1, y2);
var derCurveX = derivativeCubicBezier(x1, x2);
var rangeValue = function rangeValue(value) {
if (value > 1) {
return 1;
}
if (value < 0) {
return 0;
}
return value;
};
var bezier = function bezier(_t) {
var t = _t > 1 ? 1 : _t;
var x = t;
for (var i = 0; i < 8; ++i) {
var evalT = curveX(x) - t;
var derVal = derCurveX(x);
if (Math.abs(evalT - t) < ACCURACY || derVal < ACCURACY) {
return curveY(x);
}
x = rangeValue(x - evalT / derVal);
}
return curveY(x);
};
bezier.isStepper = false;
return bezier;
};
export var configSpring = function configSpring() {
var config = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
var _config$stiff = config.stiff,
stiff = _config$stiff === void 0 ? 100 : _config$stiff,
_config$damping = config.damping,
damping = _config$damping === void 0 ? 8 : _config$damping,
_config$dt = config.dt,
dt = _config$dt === void 0 ? 17 : _config$dt;
var stepper = function stepper(currX, destX, currV) {
var FSpring = -(currX - destX) * stiff;
var FDamping = currV * damping;
var newV = currV + (FSpring - FDamping) * dt / 1000;
var newX = currV * dt / 1000 + currX;
if (Math.abs(newX - destX) < ACCURACY && Math.abs(newV) < ACCURACY) {
return [destX, 0];
}
return [newX, newV];
};
stepper.isStepper = true;
stepper.dt = dt;
return stepper;
};
export var configEasing = function configEasing() {
for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
args[_key2] = arguments[_key2];
}
var easing = args[0];
if (typeof easing === 'string') {
switch (easing) {
case 'ease':
case 'ease-in-out':
case 'ease-out':
case 'ease-in':
case 'linear':
return configBezier(easing);
case 'spring':
return configSpring();
default:
if (easing.split('(')[0] === 'cubic-bezier') {
return configBezier(easing);
}
warn(false, "[configEasing]: first argument should be one of 'ease', 'ease-in', " + "'ease-out', 'ease-in-out','cubic-bezier(x1,y1,x2,y2)', 'linear' and 'spring', instead received %s", args);
}
}
if (typeof easing === 'function') {
return easing;
}
warn(false, '[configEasing]: first argument type should be function or string, instead received %s', args);
return null;
};
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