medical/node_modules/echarts/lib/action/geoRoam.js

var echarts = require("../echarts");

var zrUtil = require("zrender/lib/core/util");

var _roamHelper = require("./roamHelper");

var updateCenterAndZoom = _roamHelper.updateCenterAndZoom;

/**
 * @payload
 * @property {string} [componentType=series]
 * @property {number} [dx]
 * @property {number} [dy]
 * @property {number} [zoom]
 * @property {number} [originX]
 * @property {number} [originY]
 */
echarts.registerAction({
  type: 'geoRoam',
  event: 'geoRoam',
  update: 'updateLayout'
}, function (payload, ecModel) {
  var componentType = payload.componentType || 'series';
  ecModel.eachComponent({
    mainType: componentType,
    query: payload
  }, function (componentModel) {
    var geo = componentModel.coordinateSystem;

    if (geo.type !== 'geo') {
      return;
    }

    var res = updateCenterAndZoom(geo, payload, componentModel.get('scaleLimit'));
    componentModel.setCenter && componentModel.setCenter(res.center);
    componentModel.setZoom && componentModel.setZoom(res.zoom); // All map series with same `map` use the same geo coordinate system
    // So the center and zoom must be in sync. Include the series not selected by legend

    if (componentType === 'series') {
      zrUtil.each(componentModel.seriesGroup, function (seriesModel) {
        seriesModel.setCenter(res.center);
        seriesModel.setZoom(res.zoom);
      });
    }
  });
});