气温图标标注

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

const scene = new Scene({
  id: 'map',
  map: new GaodeMap({
    style: 'dark',
    pitch: 40,
    center: [118.8, 32.056],
    zoom: 12.5,
  }),
});
const fontFamily = 'iconfont';
const fontPath = '//at.alicdn.com/t/font_2534097_x6rsov3i1g.woff2?t=1622107341225';
scene.addIconFont('icon', '');
scene.addFontFace(fontFamily, fontPath);

const colors = [
  '#87CEFA',
  '#00BFFF',

  '#7FFFAA',
  '#00FF7F',
  '#32CD32',

  '#F0E68C',
  '#FFD700',

  '#FF7F50',
  '#FF6347',
  '#FF0000',
];

scene.on('loaded', () => {
  fetch('https://gw.alipayobjects.com/os/bmw-prod/94763191-2816-4c1a-8d0d-8bcf4181056a.json')
    .then((res) => res.json())
    .then((data) => {
      const filllayer = new PolygonLayer({
        name: 'fill',
        zIndex: 3,
      })
        .source(data)
        .shape('fill')
        .color('count', ['#f2f0f7', '#dadaeb', '#bcbddc', '#9e9ac8', '#756bb1', '#54278f'])
        .style({
          opacity: 0.6,
          opacityLinear: {
            enable: true,
            dir: 'out', // in - out
          },
        });
      scene.addLayer(filllayer);

      const linelayer = new LineLayer({
        zIndex: 5,
        name: 'line2',
      })
        .source(data)
        .shape('line')
        .size(1)
        .color('#fff')
        .style({
          opacity: 0.3,
        });
      scene.addLayer(linelayer);

      const pointLayer = new PointLayer({
        zIndex: 10,
      })
        .source(data)
        .shape('icon', 'text')
        .size(25)
        .color('count', (t) => {
          const c = Number(t.replace('℃', ''));
          return colors[Math.floor(((c - 18) / 16) * 10)];
        })
        .style({
          textAnchor: 'center', // 文本相对锚点的位置 center|left|right|top|bottom|top-left
          textOffset: [-25, 15],
          padding: [2, 2],
          fontFamily,
          iconfont: true,
          textAllowOverlap: true,
        });
      scene.addLayer(pointLayer);

      const tempertureLayer = new PointLayer({
        zIndex: 10,
      })
        .source(data)
        .shape('count', 'text')
        .size(12)
        .color('count', (t) => {
          const c = Number(t.replace('℃', ''));
          return colors[Math.floor(((c - 18) / 16) * 10)];
        })
        .style({
          textAnchor: 'center', // 文本相对锚点的位置 center|left|right|top|bottom|top-left
          textOffset: [35, 30],
          padding: [1, 1],
        });
      scene.addLayer(tempertureLayer);
    });
});