partnerApp/node_modules/zrender/lib/contain/cubic.js

import * as curve from '../core/curve.js';
export function containStroke(x0, y0, x1, y1, x2, y2, x3, y3, lineWidth, x, y) {
    if (lineWidth === 0) {
        return false;
    }
    var _l = lineWidth;
    if ((y > y0 + _l && y > y1 + _l && y > y2 + _l && y > y3 + _l)
        || (y < y0 - _l && y < y1 - _l && y < y2 - _l && y < y3 - _l)
        || (x > x0 + _l && x > x1 + _l && x > x2 + _l && x > x3 + _l)
        || (x < x0 - _l && x < x1 - _l && x < x2 - _l && x < x3 - _l)) {
        return false;
    }
    var d = curve.cubicProjectPoint(x0, y0, x1, y1, x2, y2, x3, y3, x, y, null);
    return d <= _l / 2;
}