cione-comp-lib
Version:
`$ yarn add cione-comp-lib` 或者 `$ npm i cione-comp-lib -S`
22 lines (21 loc) • 709 B
JavaScript
import { cubicRootAt, cubicAt } from "../core/curve.mjs";
import { trim } from "../core/util.mjs";
var regexp = /cubic-bezier\(([0-9,\.e ]+)\)/;
function createCubicEasingFunc(cubicEasingStr) {
var cubic = cubicEasingStr && regexp.exec(cubicEasingStr);
if (cubic) {
var points = cubic[1].split(",");
var a_1 = +trim(points[0]);
var b_1 = +trim(points[1]);
var c_1 = +trim(points[2]);
var d_1 = +trim(points[3]);
if (isNaN(a_1 + b_1 + c_1 + d_1)) {
return;
}
var roots_1 = [];
return function(p) {
return p <= 0 ? 0 : p >= 1 ? 1 : cubicRootAt(0, a_1, c_1, 1, p, roots_1) && cubicAt(0, b_1, d_1, 1, roots_1[0]);
};
}
}
export { createCubicEasingFunc };