mirror of https://gitee.com/antv-l7/antv-l7
72 lines
1.6 KiB
TypeScript
72 lines
1.6 KiB
TypeScript
import { HeatmapLayer, Scene } from '@antv/l7';
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import { Mapbox } from '@antv/l7-maps';
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// @ts-ignore
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import * as React from 'react';
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export default class HeatMapLayerDemo extends React.Component {
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// @ts-ignore
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private scene: Scene;
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public componentWillUnmount() {
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this.scene.destroy();
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}
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public async componentDidMount() {
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const response = await fetch(
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'https://gw.alipayobjects.com/os/basement_prod/d3564b06-670f-46ea-8edb-842f7010a7c6.json',
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);
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const scene = new Scene({
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id: 'map',
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map: new Mapbox({
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center: [121.268, 30.3628],
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pitch: 0,
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style: 'dark',
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zoom: 2,
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}),
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});
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const data = await response.json();
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const layer = new HeatmapLayer();
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layer
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.source(data)
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.shape('heatmap')
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.size('mag', [0, 1.0]) // weight映射通道
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.style({
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intensity: 2,
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radius: 20,
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opacity: 1.0,
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rampColors: {
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colors: [
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'rgba(33,102,172,0)',
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'rgb(103,169,207)',
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'rgb(209,229,240)',
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'rgb(253,219,199)',
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'rgb(239,138,98)',
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'rgb(178,24,43)',
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],
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positions: [0, 0.2, 0.4, 0.6, 0.8, 1.0],
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},
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});
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scene.addLayer(layer);
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scene.on('loaded', () => {
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console.log('scene loaded');
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});
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this.scene = scene;
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}
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public render() {
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return (
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<div
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id="map"
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style={{
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position: 'absolute',
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top: 0,
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left: 0,
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right: 0,
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bottom: 0,
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}}
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/>
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);
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}
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}
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