import { Scene, HeatmapLayer } from '@antv/l7';
import { Mapbox } from '@antv/l7-maps';

const scene = new Scene({
  id: 'map',
  map: new Mapbox({
    style: 'dark',
    pitch: 43,
    center: [ 120.13383079335335, 29.651873105004427 ],
    zoom: 7.068989519212174
  })
});
scene.on('loaded', () => {
  fetch(
    'https://gw.alipayobjects.com/os/basement_prod/a1a8158d-6fe3-424b-8e50-694ccf61c4d7.csv'
  )
    .then(res => res.text())
    .then(data => {
      const layer = new HeatmapLayer({})
        .source(data, {
          parser: {
            type: 'csv',
            x: 'lng',
            y: 'lat'
          },
          transforms: [
            {
              type: 'hexagon',
              size: 2500,
              field: 'v',
              method: 'sum'
            }
          ]
        })
        .size('sum', sum => {
          return sum * 200;
        })
        .shape('hexagonColumn')
        .style({
          coverage: 0.8,
          angle: 0,
          opacity: 1.0
        })
        .color('sum', [
          '#094D4A',
          '#146968',
          '#1D7F7E',
          '#289899',
          '#34B6B7',
          '#4AC5AF',
          '#5FD3A6',
          '#7BE39E',
          '#A1EDB8',
          '#C3F9CC',
          '#DEFAC0',
          '#ECFFB1'
        ]);
      scene.addLayer(layer);
    });
});