susiwen8 commented on a change in pull request #12590: URL: https://github.com/apache/incubator-echarts/pull/12590#discussion_r421961508
########## File path: src/chart/helper/multipleGraphEdgeHelper.js ########## @@ -0,0 +1,225 @@ +/* +* Licensed to the Apache Software Foundation (ASF) under one +* or more contributor license agreements. See the NOTICE file +* distributed with this work for additional information +* regarding copyright ownership. The ASF licenses this file +* to you under the Apache License, Version 2.0 (the +* "License"); you may not use this file except in compliance +* with the License. You may obtain a copy of the License at +* +* http://www.apache.org/licenses/LICENSE-2.0 +* +* Unless required by applicable law or agreed to in writing, +* software distributed under the License is distributed on an +* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +* KIND, either express or implied. See the License for the +* specific language governing permissions and limitations +* under the License. +*/ + +var linkMap = {}; +var curvenessList = []; + +/** + * params handler + * @param seriesModel + * @returns {*} + */ +var getAutoCurvenessParams = function (seriesModel) { + var autoCurveness = seriesModel.getModel('autoCurveness'); + + if (!autoCurveness || !autoCurveness.option) { + return null; + } + + return autoCurveness.option; +}; + +/** + * Generate a list of edge curvatures, 20 is the default + * 生成边曲度优先使用列表, 20为默认值 + * @param seriesModel + * @param addLength append length + * @return 20 => [0, -0.2, 0.2, -0.4, 0.4, -0.6, 0.6, -0.8, 0.8, -1, 1, -1.2, 1.2, -1.4, 1.4, -1.6, 1.6, -1.8, 1.8, -2] + */ +var createCurveness = function (seriesModel, addLength) { + var autoCurvenssParmas = getAutoCurvenessParams(seriesModel); + var length = 20; + + // handler the function set + if (typeof autoCurvenssParmas === 'number') { + length = autoCurvenssParmas; + } + else if (typeof autoCurvenssParmas === 'function') { + curvenessList = autoCurvenssParmas(); + return; + } + + // addLength + if (addLength) { + length = addLength; + } + + // if already calculated return + if (length < curvenessList.length) { + return; + } + + // 保证长度为偶数 + var len = length % 2 ? length + 2 : length + 3; + curvenessList = []; + + for (var i = 0; i < len; i++) { + curvenessList.push((i % 2 ? i + 1 : i) / 10 * (i % 2 ? -1 : 1)); + } +}; + +/** + * Create different cache key data in the positive and negative directions, in order to set the curvature later + * 正反方向创建不同的缓存key数据，为了后期设置曲率考虑 Review comment: English comment only ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@echarts.apache.org For additional commands, e-mail: commits-h...@echarts.apache.org
