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57 lines
2.0 KiB
Plaintext
57 lines
2.0 KiB
Plaintext
"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.default = transformGlyfContours;
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var _pathCeil = _interopRequireDefault(require("../../graphics/pathCeil"));
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var _pathTransform = _interopRequireDefault(require("../../graphics/pathTransform"));
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var _lang = require("../../common/lang");
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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/**
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* @file 转换复合字形的contours，以便于显示
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* @author mengke01(kekee000@gmail.com)
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*/
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/**
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* 转换复合字形轮廓，结果保存在contoursList中，并返回当前glyf的轮廓
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*
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* @param {Object} glyf glyf对象
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* @param {Object} ttf ttfObject对象
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* @param {Object=} contoursList 保存转换中间生成的contours
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* @param {number} glyfIndex glyf对象当前的index
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* @return {Array} 转换后的轮廓
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*/
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function transformGlyfContours(glyf, ttf) {
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var contoursList = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};
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var glyfIndex = arguments.length > 3 ? arguments[3] : undefined;
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if (!glyf.glyfs) {
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return glyf;
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}
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var compoundContours = [];
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glyf.glyfs.forEach(function (g) {
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var glyph = ttf.glyf[g.glyphIndex];
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if (!glyph || glyph === glyf) {
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return;
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}
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// 递归转换contours
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if (glyph.compound && !contoursList[g.glyphIndex]) {
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transformGlyfContours(glyph, ttf, contoursList, g.glyphIndex);
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}
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// 这里需要进行matrix变换，需要复制一份
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var contours = (0, _lang.clone)(glyph.compound ? contoursList[g.glyphIndex] || [] : glyph.contours);
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var transform = g.transform;
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for (var i = 0, l = contours.length; i < l; i++) {
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(0, _pathTransform.default)(contours[i], transform.a, transform.b, transform.c, transform.d, transform.e, transform.f);
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compoundContours.push((0, _pathCeil.default)(contours[i]));
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}
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});
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// eslint-disable-next-line eqeqeq
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if (null != glyfIndex) {
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contoursList[glyfIndex] = compoundContours;
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}
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return compoundContours;
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} |