mirror of https://gitee.com/antv-l7/antv-l7
93 lines
2.1 KiB
TypeScript
93 lines
2.1 KiB
TypeScript
// @ts-nocheck
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// @ts-ignore
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import { Scene, Source } from '@antv/l7';
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import { ImageLayer, RasterLayer } from '@antv/l7-layers';
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import { GaodeMap } from '@antv/l7-maps';
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import * as React from 'react';
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import * as GeoTIFF from 'geotiff';
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async function getTiffData() {
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const response = await fetch(
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'https://gw.alipayobjects.com/os/rmsportal/XKgkjjGaAzRyKupCBiYW.dat',
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);
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const arrayBuffer = await response.arrayBuffer();
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const tiff = await GeoTIFF.fromArrayBuffer(arrayBuffer);
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const image = await tiff.getImage();
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const width = image.getWidth();
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const height = image.getHeight();
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const values = await image.readRasters();
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return {
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data: values[0],
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width,
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height,
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min: 0,
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max: 8000,
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};
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}
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export default class Demo extends React.Component {
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public async componentDidMount() {
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const scene = new Scene({
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id: 'map',
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map: new GaodeMap({
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center: [121.268, 30.3628],
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zoom: 3,
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}),
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});
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async function addLayer() {
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const tiffdata = await getTiffData();
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const layer = new RasterLayer({});
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layer
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.source(tiffdata.data, {
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parser: {
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type: 'raster',
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width: tiffdata.width,
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height: tiffdata.height,
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min: 0,
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max: 80,
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extent: [73.482190241, 3.82501784112, 135.106618732, 57.6300459963],
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},
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})
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.style({
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heightRatio: 100,
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opacity: 0.8,
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rampColors: {
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colors: [
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'#FF4818',
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'#F7B74A',
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'#FFF598',
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'#91EABC',
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'#2EA9A1',
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'#206C7C',
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].reverse(),
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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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return layer;
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}
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const layer = await addLayer();
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scene.on('loaded', () => {
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scene.addLayer(layer);
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});
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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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></div>
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);
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}
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}
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