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Current File : /home/opti/workflow/src/public/app-assets/vendors/js/charts/echarts/zrender/contain/quadratic.js

define(function (require) {

    var curve = require('../core/curve');

    return {
        /**
         * 二次贝塞尔曲线描边包含判断
         * @param  {number}  x0
         * @param  {number}  y0
         * @param  {number}  x1
         * @param  {number}  y1
         * @param  {number}  x2
         * @param  {number}  y2
         * @param  {number}  lineWidth
         * @param  {number}  x
         * @param  {number}  y
         * @return {boolean}
         */
        containStroke: function (x0, y0, x1, y1, x2, y2, lineWidth, x, y) {
            if (lineWidth === 0) {
                return false;
            }
            var _l = lineWidth;
            // Quick reject
            if (
                (y > y0 + _l && y > y1 + _l && y > y2 + _l)
                || (y < y0 - _l && y < y1 - _l && y < y2 - _l)
                || (x > x0 + _l && x > x1 + _l && x > x2 + _l)
                || (x < x0 - _l && x < x1 - _l && x < x2 - _l)
            ) {
                return false;
            }
            var d = curve.quadraticProjectPoint(
                x0, y0, x1, y1, x2, y2,
                x, y, null
            );
            return d <= _l / 2;
        }
    };
});

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