mirror of https://gitee.com/antv-l7/antv-l7
86 lines
2.1 KiB
TypeScript
86 lines
2.1 KiB
TypeScript
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import { ILayer, PolygonLayer, Scene } from '@antv/l7';
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import { Button } from 'antd';
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import { Map } from '@antv/l7-maps';
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import React, { useEffect, useState } from 'react';
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import { useData, addLayers } from './useLine';
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export default () => {
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const { geoData } = useData();
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const [filllayer, setFillLayer] = useState<ILayer>();
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const [mapScene, setScene] = useState<Scene>();
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const colors = [
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['#7fc97f', '#beaed4', '#fdc086', '#ffff99', '#386cb0'],
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['#1b9e77', '#d95f02', '#7570b3', '#e7298a', '#66a61e'],
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['#a6cee3', '#1f78b4', '#b2df8a', '#33a02c', '#fb9a99'],
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['#fbb4ae', '#b3cde3', '#ccebc5', '#decbe4', '#fed9a6'],
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['#e41a1c', '#377eb8', '#4daf4a', '#984ea3', '#ff7f00'],
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['#8dd3c7', '#ffffb3', '#bebada', '#fb8072', '#80b1d3'],
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];
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useEffect(() => {
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const scene = new Scene({
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id: 'map',
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map: new Map({
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pitch: 0,
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style: 'light',
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center: [-96, 37.8],
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zoom: 3,
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}),
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});
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if (geoData) {
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const layer = new PolygonLayer({})
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.source(geoData.county, {
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transforms: [
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{
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type: 'join',
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sourceField: 'id',
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targetField: 'id',
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data: geoData.unemploymentdata,
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},
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],
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})
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.shape('fill')
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.color('name', colors[0])
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.style({
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opacity: 1,
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});
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scene.addLayer(layer);
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setScene(scene);
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setFillLayer(layer);
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layer.on('legend:color', (color) => {
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console.log('color', color);
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});
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addLayers(geoData, scene, layer);
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}
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return () => {
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scene.destroy();
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};
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}, [geoData]);
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const changeColor = () => {
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const index = Math.round(Math.random() * 6);
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filllayer?.color('name', colors[index]);
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mapScene?.render();
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console.log(filllayer?.getLegend('color'));
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};
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return (
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<div>
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<div
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id="map"
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style={{
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height: '500px',
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position: 'relative',
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}}
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/>
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<Button onClick={changeColor} type="primary" size={'large'}>
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更新颜色
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</Button>
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</div>
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);
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};
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