Current File : //home/tradevaly/www/node_modules/echarts/src/chart/helper/createGraphFromNodeMatrix.js

/*
* 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.
*/

import * as zrUtil from 'zrender/src/core/util';
import List from '../../data/List';
import Graph from '../../data/Graph';
import linkList from '../../data/helper/linkList';
import createDimensions from '../../data/helper/createDimensions';
import CoordinateSystem from '../../CoordinateSystem';
import createListFromArray from './createListFromArray';

/**
 * 从邻接矩阵生成
 * ```
 *        TARGET
 *    -1--2--3--4--5-
 *  1| x  x  x  x  x
 *  2| x  x  x  x  x
 *  3| x  x  x  x  x  SOURCE
 *  4| x  x  x  x  x
 *  5| x  x  x  x  x
 * ```
 *
 * @param {Array.<Object>} nodes 节点信息
 * @param {Array} matrix 邻接矩阵
 * @param {module:echarts/model/Series}
 * @param {boolean} directed 是否是有向图
 * @return {module:echarts/data/Graph}
 */
export default function (nodes, matrix, hostModel, directed) {
    var graph = new Graph(directed);
    for (var i = 0; i < nodes.length; i++) {
        graph.addNode(zrUtil.retrieve(
            // Id, name, dataIndex
            nodes[i].id, nodes[i].name, i
        ), i);
    }

    var size = matrix.length;
    var links = [];
    var linkCount = 0;
    for (var i = 0; i < size; i++) {
        for (var j = 0; j < size; j++) {
            var val = matrix[i][j];
            if (val === 0) {
                continue;
            }
            var n1 = graph.nodes[i];
            var n2 = graph.nodes[j];
            var edge = graph.addEdge(n1, n2, linkCount);
            if (edge) {
                linkCount++;
                links.push({
                    value: val
                });
            }
        }
    }

    var coordSys = hostModel.get('coordinateSystem');
    var nodeData;
    if (coordSys === 'cartesian2d' || coordSys === 'polar') {
        nodeData = createListFromArray({data: nodes}, hostModel);
    }
    else {
        // FIXME
        var coordSysCtor = CoordinateSystem.get(coordSys);
        // FIXME
        var dimensionNames = createDimensions(nodes, {
            coordDimensions: (
                (coordSysCtor && coordSysCtor.type !== 'view')
                ? (coordSysCtor.dimensions || []) : []
            ).concat(['value'])
        });
        nodeData = new List(dimensionNames, hostModel);
        nodeData.initData(nodes);
    }
    var edgeData = new List(['value'], hostModel);

    edgeData.initData(links);

    linkList({
        mainData: nodeData,
        struct: graph,
        structAttr: 'graph',
        datas: {node: nodeData, edge: edgeData},
        datasAttr: {node: 'data', edge: 'edgeData'}
    });

    // Update dataIndex of nodes and edges because invalid edge may be removed
    graph.update();

    return graph;
}