zh/builder/src/echarts3/chart/graph/simpleLayout.js

import { simpleLayout, simpleLayoutEdge } from './simpleLayoutHelper';
export default function (ecModel, api) {
  ecModel.eachSeriesByType('graph', function (seriesModel) {
    var layout = seriesModel.get('layout');
    var coordSys = seriesModel.coordinateSystem;

    if (coordSys && coordSys.type !== 'view') {
      var data = seriesModel.getData();
      var dimensions = coordSys.dimensions;
      data.each(dimensions, function () {
        var hasValue;
        var args = arguments;
        var value = [];

        for (var i = 0; i < dimensions.length; i++) {
          if (!isNaN(args[i])) {
            hasValue = true;
          }

          value.push(args[i]);
        }

        var idx = args[args.length - 1];

        if (hasValue) {
          data.setItemLayout(idx, coordSys.dataToPoint(value));
        } else {
          // Also {Array.<number>}, not undefined to avoid if...else... statement
          data.setItemLayout(idx, [NaN, NaN]);
        }
      });
      simpleLayoutEdge(data.graph);
    } else if (!layout || layout === 'none') {
      simpleLayout(seriesModel);
    }
  });
}