mirror of https://gitee.com/antv-l7/antv-l7
99 lines
2.5 KiB
TypeScript
99 lines
2.5 KiB
TypeScript
// @ts-ignore
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import { Scene, RasterLayer } from '@antv/l7';
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// @ts-ignore
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import { GaodeMap } from '@antv/l7-maps';
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import React, { useEffect } 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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// 'https://gw.alipayobjects.com/zos/antvdemo/assets/2019_clip/ndvi_201905.tiff',
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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 () => {
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// @ts-ignore
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useEffect( async () => {
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const scene = new Scene({
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id: 'map',
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stencil: true,
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map: new GaodeMap({
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center: [120.165, 30.26],
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pitch: 0,
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zoom: 2,
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style: 'dark',
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}),
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});
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scene.addImage(
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'00',
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'https://gw.alipayobjects.com/zos/basement_prod/604b5e7f-309e-40db-b95b-4fac746c5153.svg',
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);
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const tiffdata = await getTiffData();
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fetch(
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'https://gw.alipayobjects.com/os/basement_prod/d2e0e930-fd44-4fca-8872-c1037b0fee7b.json',
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)
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.then((res) => res.json())
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.then((maskData) => {
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const layer = new RasterLayer({ mask: true, maskfence: maskData });
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const mindata = -0;
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const maxdata = 8000;
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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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extent: [
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73.482190241,
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3.82501784112,
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135.106618732,
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57.6300459963,
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],
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},
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})
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.style({
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opacity: 0.8,
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domain: [mindata, maxdata],
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clampLow: true,
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rampColors: {
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colors: [
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'rgb(166,97,26)',
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'rgb(223,194,125)',
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'rgb(245,245,245)',
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'rgb(128,205,193)',
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'rgb(1,133,113)',
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],
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positions: [0, 0.25, 0.5, 0.75, 1.0],
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},
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});
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scene.addLayer(layer);
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});
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}, []);
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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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height: '500px',
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position: 'relative',
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}}
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/>
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);
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};
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