圆形扫光城市

import { CityBuildingLayer, LineLayer, PolygonLayer, Scene } from '@antv/l7';
import { GaodeMap } from '@antv/l7-maps';

const scene = new Scene({
  id: 'map',
  map: new GaodeMap({
    style: 'dark',
    center: [120.145, 30.238915],
    pitch: 60,
    zoom: 13.2,
  }),
});
fetch('https://gw.alipayobjects.com/os/rmsportal/ggFwDClGjjvpSMBIrcEx.json').then(async (res) => {
  const pointLayer = new CityBuildingLayer();
  pointLayer
    .source(await res.json())
    .size('floor', [0, 500])
    .color('rgba(242,246,250,1.0)')
    .animate({
      enable: true,
    })
    .active({
      color: '#0ff',
      mix: 0.5,
    })
    .style({
      opacity: 0.7,
      baseColor: 'rgb(16, 16, 16)',
      windowColor: 'rgb(30, 60, 89)',
      brightColor: 'rgb(255, 176, 38)',
      sweep: {
        enable: true,
        sweepRadius: 2,
        sweepColor: '#1990FF',
        sweepSpeed: 0.5,
        sweepCenter: [120.145319, 30.238915],
      },
    });
  scene.addLayer(pointLayer);
});

fetch('https://gw.alipayobjects.com/os/bmw-prod/67130c6c-7f49-4680-915c-54e69730861d.json')
  .then((data) => data.json())
  .then(({ lakeBorderData, lakeData, landData }) => {
    const lakeLayer = new PolygonLayer()
      .source(lakeData)
      .shape('fill')
      .color('#1E90FF')
      .style({
        opacity: 0.4,
        opacityLinear: {
          enable: true,
          dir: 'out', // in - out
        },
      });
    const landLayer = new PolygonLayer()
      .source(landData)
      .shape('fill')
      .color('#3CB371')
      .style({
        opacity: 0.4,
        opacityLinear: {
          enable: true,
          dir: 'in', // in - out
        },
      });

    const lakeBorderLayer = new PolygonLayer()
      .source(lakeBorderData)
      .shape('fill')
      .color('#ccc')
      .style({
        opacity: 0.5,
        opacityLinear: {
          enable: true,
          dir: 'in', // in - out
        },
      });

    scene.addLayer(lakeLayer);
    scene.addLayer(lakeBorderLayer);
    scene.addLayer(landLayer);
  });

fetch('https://gw.alipayobjects.com/os/basement_prod/40ef2173-df66-4154-a8c0-785e93a5f18e.json')
  .then((res) => res.json())
  .then((data) => {
    const layer = new LineLayer({
      zIndex: 0,
      depth: true,
    })
      .source(data)
      .size(1)
      .shape('line')
      .color('#1990FF')
      .animate({
        interval: 1, // 间隔
        duration: 2, // 持续时间，延时
        trailLength: 2, // 流线长度
      });
    scene.addLayer(layer);
  });