矢量瓦片-多边形掩模

// @ts-ignore
import { PolygonLayer, Scene, Source } from '@antv/l7';
// @ts-ignore
import { Map } from '@antv/l7-maps';

const scene = new Scene({
  id: 'map',

  map: new Map({
    center: [110, 30],
    // zoom: 12,
    zoom: 3,
  }),
});
const worldSource = new Source(
  'https://ganos.oss-cn-hangzhou.aliyuncs.com/m2/rs_l7/{z}/{x}/{y}.pbf',
  {
    parser: {
      type: 'mvt',
      tileSize: 256,
      maxZoom: 9,
      extent: [-180, -85.051129, 179, 85.051129],
    },
  },
);
const maskData = {
  type: 'FeatureCollection',
  features: [
    {
      type: 'Feature',
      geometry: {
        type: 'MultiPolygon',
        coordinates: [
          [
            [
              [125.15625000000001, 8.407168163601076],
              [116.54296874999999, -21.289374355860424],
              [156.26953125, -20.632784250388013],
              [150.29296875, 2.1088986592431382],
            ],
          ],
          [
            [
              [78.57421875, 46.92025531537451],
              [51.67968749999999, 37.020098201368114],
              [87.890625, 28.76765910569123],
            ],
          ],
        ],
      },
    },
  ],
};

const polygonLayer = new PolygonLayer({ visible: true })
  .source(maskData)
  .shape('fill')
  .color('#f00')
  .style({ opacity: 0.4 });

const fillLayer = new PolygonLayer({
  zIndex: 3,
  visible: true,
  maskLayers: [polygonLayer],
  featureId: 'COLOR',
  sourceLayer: 'ecoregions2', // woods hillshade contour ecoregions ecoregions2 city
})
  .source(worldSource)
  .shape('fill')
  .color('COLOR')
  .style({
    opacity: 0.5,
  });

scene.on('loaded', () => {
  scene.addLayer(fillLayer);

  scene.addLayer(polygonLayer);
});