text: import echarts from 'echarts/lib/echarts';
  import componentShadingMixin from '../../component/common/componentShadingMixin';
  
  function transformPolygon(coordSys, poly) {
      var ret = [];
      for (var i = 0; i < poly.length; i++) {
          ret.push(coordSys.dataToPoint(poly[i]));
      }
      return ret;
  }
  
  var Polygons3DSeries = echarts.extendSeriesModel({
  
      type: 'series.polygons3D',
  
      getRegionModel: function (idx) {
          return this.getData().getItemModel(idx);
      },
  
      getRegionPolygonCoords: function (idx) {
          var coordSys = this.coordinateSystem;
          var itemModel = this.getData().getItemModel(idx);
          var coords = itemModel.option instanceof Array
              ? itemModel.option : itemModel.getShallow('coords');
          if (!itemModel.get('multiPolygon')) {
              coords = [coords];
          }
          // TODO Validate
          var out = [];
          for (var i = 0; i < coords.length; i++) {
              // TODO Convert here ?
              var interiors = [];
              for (var k = 1; k < coords[i].length; k++) {
                  interiors.push(transformPolygon(coordSys, coords[i][k]));
              }
              out.push({
                  exterior: transformPolygon(coordSys, coords[i][0]),
                  interiors: interiors
              });
          }
          return out;
      },
  
      getInitialData: function (option) {
          var polygonsData = new echarts.List(['value'], this);
          polygonsData.hasItemOption = false;
          polygonsData.initData(option.data, [], function (dataItem, dimName, dataIndex, dimIndex) {
              // dataItem is simply coords
              if (dataItem instanceof Array) {
                  return NaN;
              }
              else {
                  polygonsData.hasItemOption = true;
                  var value = dataItem.value;
                  if (value != null) {
                      return value instanceof Array ? value[dimIndex] : value;
                  }
              }
          });
  
          return polygonsData;
      },
  
      defaultOption: {
  
          show: true,
  
          data: null,
  
          multiPolygon: false,
  
          progressiveThreshold: 1e3,
          progressive: 1e3,
  
          zlevel: -10,
  
          label: {
              show: false,
              // Distance in 3d space.
              distance: 2,
  
              textStyle: {
                  fontSize: 20,
                  color: '#000',
                  backgroundColor: 'rgba(255,255,255,0.7)',
                  padding: 3,
                  borderRadius: 4
              }
          },
  
          itemStyle: {
              color: '#fff',
              borderWidth: 0,
              borderColor: '#333'
          },
  
          emphasis: {
              itemStyle: {
                  color: '#639fc0'
              },
              label: {
                  show: true
              }
          }
      }
  });
  
  echarts.util.merge(Polygons3DSeries.prototype, componentShadingMixin);
  
  export default Polygons3DSeries;