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node_modules/echarts/src/chart/graph/simpleLayoutHelper.js 1.72 KB
aaac7fed   liuqimichale   add
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  /*
  * 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 vec2 from 'zrender/src/core/vector';
  
  export function simpleLayout(seriesModel) {
      var coordSys = seriesModel.coordinateSystem;
      if (coordSys && coordSys.type !== 'view') {
          return;
      }
      var graph = seriesModel.getGraph();
  
      graph.eachNode(function (node) {
          var model = node.getModel();
          node.setLayout([+model.get('x'), +model.get('y')]);
      });
  
      simpleLayoutEdge(graph);
  }
  
  export function simpleLayoutEdge(graph) {
      graph.eachEdge(function (edge) {
          var curveness = edge.getModel().get('lineStyle.curveness') || 0;
          var p1 = vec2.clone(edge.node1.getLayout());
          var p2 = vec2.clone(edge.node2.getLayout());
          var points = [p1, p2];
          if (+curveness) {
              points.push([
                  (p1[0] + p2[0]) / 2 - (p1[1] - p2[1]) * curveness,
                  (p1[1] + p2[1]) / 2 - (p2[0] - p1[0]) * curveness
              ]);
          }
          edge.setLayout(points);
      });
  }