en/builder/src/echarts3/chart/graph/circularLayout.js

import { circularLayout } from './circularLayoutHelper';
export default function (ecModel) {
  ecModel.eachSeriesByType('graph', function (seriesModel) {
    if (seriesModel.get('layout') === 'circular') {
      circularLayout(seriesModel);
    }
  });
}