直线动画

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

const scene = new Scene({
  id: 'map',
  map: new GaodeMap({
    style: 'dark',
    center: [107.77791556935472, 35.443286920228644],
    zoom: 2.9142882493605033,
  }),
});
scene.on('loaded', () => {
  fetch('https://gw.alipayobjects.com/os/rmsportal/UEXQMifxtkQlYfChpPwT.txt')
    .then((res) => res.text())
    .then((data) => {
      const layer = new LineLayer({
        blend: 'normal',
      })
        .source(data, {
          parser: {
            type: 'csv',
            x: 'lng1',
            y: 'lat1',
            x1: 'lng2',
            y1: 'lat2',
          },
        })
        .size(1)
        .shape('greatcircle')
        .animate({
          enable: true,
          interval: 0.1,
          trailLength: 0.5,
          duration: 2,
        })
        .color('#8C1EB2')
        .style({
          opacity: 0.8,
        });
      scene.addLayer(layer);
    });
});