258 lines
7.8 KiB
JavaScript
258 lines
7.8 KiB
JavaScript
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/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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var zrUtil = require("zrender/lib/core/util");
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/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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var KEY_DELIMITER = '-->';
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/**
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* params handler
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* @param {module:echarts/model/SeriesModel} seriesModel
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* @returns {*}
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*/
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var getAutoCurvenessParams = function (seriesModel) {
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return seriesModel.get('autoCurveness') || null;
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};
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/**
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* Generate a list of edge curvatures, 20 is the default
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* @param {module:echarts/model/SeriesModel} seriesModel
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* @param {number} appendLength
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* @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]
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*/
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var createCurveness = function (seriesModel, appendLength) {
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var autoCurvenessParmas = getAutoCurvenessParams(seriesModel);
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var length = 20;
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var curvenessList = []; // handler the function set
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if (typeof autoCurvenessParmas === 'number') {
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length = autoCurvenessParmas;
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} else if (zrUtil.isArray(autoCurvenessParmas)) {
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seriesModel.__curvenessList = autoCurvenessParmas;
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return;
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} // append length
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if (appendLength > length) {
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length = appendLength;
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} // make sure the length is even
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var len = length % 2 ? length + 2 : length + 3;
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curvenessList = [];
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for (var i = 0; i < len; i++) {
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curvenessList.push((i % 2 ? i + 1 : i) / 10 * (i % 2 ? -1 : 1));
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}
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seriesModel.__curvenessList = curvenessList;
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};
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/**
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* Create different cache key data in the positive and negative directions, in order to set the curvature later
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* @param {number|string|module:echarts/data/Graph.Node} n1
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* @param {number|string|module:echarts/data/Graph.Node} n2
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* @param {module:echarts/model/SeriesModel} seriesModel
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* @returns {string} key
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*/
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var getKeyOfEdges = function (n1, n2, seriesModel) {
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var source = [n1.id, n1.dataIndex].join('.');
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var target = [n2.id, n2.dataIndex].join('.');
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return [seriesModel.uid, source, target].join(KEY_DELIMITER);
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};
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/**
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* get opposite key
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* @param {string} key
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* @returns {string}
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*/
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var getOppositeKey = function (key) {
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var keys = key.split(KEY_DELIMITER);
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return [keys[0], keys[2], keys[1]].join(KEY_DELIMITER);
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};
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/**
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* get edgeMap with key
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* @param edge
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* @param {module:echarts/model/SeriesModel} seriesModel
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*/
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var getEdgeFromMap = function (edge, seriesModel) {
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var key = getKeyOfEdges(edge.node1, edge.node2, seriesModel);
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return seriesModel.__edgeMap[key];
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};
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/**
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* calculate all cases total length
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* @param edge
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* @param seriesModel
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* @returns {number}
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*/
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var getTotalLengthBetweenNodes = function (edge, seriesModel) {
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var len = getEdgeMapLengthWithKey(getKeyOfEdges(edge.node1, edge.node2, seriesModel), seriesModel);
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var lenV = getEdgeMapLengthWithKey(getKeyOfEdges(edge.node2, edge.node1, seriesModel), seriesModel);
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return len + lenV;
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};
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/**
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*
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* @param key
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*/
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var getEdgeMapLengthWithKey = function (key, seriesModel) {
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var edgeMap = seriesModel.__edgeMap;
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return edgeMap[key] ? edgeMap[key].length : 0;
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};
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/**
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* Count the number of edges between the same two points, used to obtain the curvature table and the parity of the edge
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* @see /graph/GraphSeries.js@getInitialData
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* @param {module:echarts/model/SeriesModel} seriesModel
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*/
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function initCurvenessList(seriesModel) {
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if (!getAutoCurvenessParams(seriesModel)) {
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return;
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}
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seriesModel.__curvenessList = [];
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seriesModel.__edgeMap = {}; // calc the array of curveness List
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createCurveness(seriesModel);
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}
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/**
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* set edgeMap with key
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* @param {number|string|module:echarts/data/Graph.Node} n1
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* @param {number|string|module:echarts/data/Graph.Node} n2
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* @param {module:echarts/model/SeriesModel} seriesModel
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* @param {number} index
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*/
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function createEdgeMapForCurveness(n1, n2, seriesModel, index) {
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if (!getAutoCurvenessParams(seriesModel)) {
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return;
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}
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var key = getKeyOfEdges(n1, n2, seriesModel);
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var edgeMap = seriesModel.__edgeMap;
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var oppositeEdges = edgeMap[getOppositeKey(key)]; // set direction
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if (edgeMap[key] && !oppositeEdges) {
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edgeMap[key].isForward = true;
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} else if (oppositeEdges && edgeMap[key]) {
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oppositeEdges.isForward = true;
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edgeMap[key].isForward = false;
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}
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edgeMap[key] = edgeMap[key] || [];
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edgeMap[key].push(index);
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}
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/**
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* get curvature for edge
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* @param edge
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* @param {module:echarts/model/SeriesModel} seriesModel
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* @param index
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*/
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function getCurvenessForEdge(edge, seriesModel, index, needReverse) {
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var autoCurvenessParams = getAutoCurvenessParams(seriesModel);
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var isArrayParam = zrUtil.isArray(autoCurvenessParams);
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if (!autoCurvenessParams) {
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return null;
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}
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var edgeArray = getEdgeFromMap(edge, seriesModel);
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if (!edgeArray) {
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return null;
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}
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var edgeIndex = -1;
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for (var i = 0; i < edgeArray.length; i++) {
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if (edgeArray[i] === index) {
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edgeIndex = i;
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break;
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}
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} // if totalLen is Longer createCurveness
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var totalLen = getTotalLengthBetweenNodes(edge, seriesModel);
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createCurveness(seriesModel, totalLen);
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edge.lineStyle = edge.lineStyle || {}; // if is opposite edge, must set curvenss to opposite number
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var curKey = getKeyOfEdges(edge.node1, edge.node2, seriesModel);
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var curvenessList = seriesModel.__curvenessList; // if pass array no need parity
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var parityCorrection = isArrayParam ? 0 : totalLen % 2 ? 0 : 1;
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if (!edgeArray.isForward) {
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// the opposite edge show outside
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var oppositeKey = getOppositeKey(curKey);
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var len = getEdgeMapLengthWithKey(oppositeKey, seriesModel);
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var resValue = curvenessList[edgeIndex + len + parityCorrection]; // isNeedReverse, simple, force type need reverse the curveness in the junction of the forword and the opposite
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if (needReverse) {
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// set as array may make the parity handle with the len of opposite
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if (isArrayParam) {
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if (autoCurvenessParams && autoCurvenessParams[0] === 0) {
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return (len + parityCorrection) % 2 ? resValue : -resValue;
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} else {
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return ((len % 2 ? 0 : 1) + parityCorrection) % 2 ? resValue : -resValue;
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}
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} else {
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return (len + parityCorrection) % 2 ? resValue : -resValue;
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}
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} else {
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return curvenessList[edgeIndex + len + parityCorrection];
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}
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} else {
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return curvenessList[parityCorrection + edgeIndex];
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}
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}
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exports.initCurvenessList = initCurvenessList;
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exports.createEdgeMapForCurveness = createEdgeMapForCurveness;
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exports.getCurvenessForEdge = getCurvenessForEdge; |