航向图

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

const scene = new Scene({
  id: 'map',
  map: new GaodeMap({
    pitch: 40,
    center: [40, 40.16797],
    style: 'dark',
    zoom: 2.5,
  }),
});
scene.addImage(
  'plane',
  'https://gw.alipayobjects.com/zos/bmw-prod/0ca1668e-38c2-4010-8568-b57cb33839b9.svg',
);
scene.on('loaded', () => {
  Promise.all([
    fetch(
      'https://gw.alipayobjects.com/os/bmw-prod/2960e1fc-b543-480f-a65e-d14c229dd777.json',
    ).then((d) => d.json()),
    fetch(
      'https://gw.alipayobjects.com/os/basement_prod/4472780b-fea1-4fc2-9e4b-3ca716933dc7.json',
    ).then((d) => d.text()),
    fetch(
      'https://gw.alipayobjects.com/os/basement_prod/a5ac7bce-181b-40d1-8a16-271356264ad8.json',
    ).then((d) => d.text()),
  ]).then(function onLoad([world, dot, flyline]) {
    const dotData = eval(dot);
    // @ts-ignore
    const flydata = eval(flyline).map((item) => {
      // @ts-ignore
      const latlng1 = item.from.split(',').map((e) => {
        return e * 1;
      });
      // @ts-ignore
      const latlng2 = item.to.split(',').map((e) => {
        return e * 1;
      });
      return { coord: [latlng1, latlng2] };
    });

    const worldLine = new LineLayer().source(world).color('#41fc9d').size(0.5).style({
      opacity: 0.4,
    });
    const dotPoint = new PointLayer()
      .source(dotData, {
        parser: {
          type: 'json',
          x: 'lng',
          y: 'lat',
        },
      })
      .shape('circle')
      .color('#ffed11')
      .animate(true)
      .size(40);
    const flyLine = new LineLayer({ blend: 'normal' })
      .source(flydata, {
        parser: {
          type: 'json',
          coordinates: 'coord',
        },
      })
      .color('#ff6b34')
      .texture('plane')
      .shape('arc')
      .size(15)
      .animate({
        duration: 1,
        interval: 0.2,
        trailLength: 0.05,
      })
      .style({
        textureBlend: 'replace',
        lineTexture: true, // 开启线的贴图功能
        iconStep: 10, // 设置贴图纹理的间距
      });

    const flyLine2 = new LineLayer()
      .source(flydata, {
        parser: {
          type: 'json',
          coordinates: 'coord',
        },
      })
      .color('#ff6b34')
      .shape('arc')
      .size(1)
      .style({
        lineType: 'dash',
        dashArray: [5, 5],
        opacity: 0.5,
      });
    scene.addLayer(worldLine);
    scene.addLayer(dotPoint);
    scene.addLayer(flyLine2);
    scene.addLayer(flyLine);
  });
});