fonteditor-core/src/ttf/util/reduceGlyf.js

fonts (ttf, woff, woff2, eot, svg, otf) parse, write, transform, glyph adjust.

/**
 * @file 缩减glyf大小，去除冗余节点
 * @author mengke01(kekee000@gmail.com)
 */

import reducePath from '../../graphics/reducePath';

/**
 * 缩减glyf，去除冗余节点
 *
 * @param {Object} glyf glyf对象
 * @return {Object} glyf对象
 */
export default function reduceGlyf(glyf) {

    const contours = glyf.contours;
    let contour;
    for (let j = contours.length - 1; j >= 0; j--) {
        contour = reducePath(contours[j]);

        // 空轮廓
        if (contour.length <= 2) {
            contours.splice(j, 1);
            continue;
        }
    }

    if (0 === glyf.contours.length) {
        delete glyf.contours;
    }

    return glyf;
}