<template>
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<view class="device">
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<Navbar title="设备列表"></Navbar>
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</view>
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</template>
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<script setup>
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import{ ref, onMounted } from 'vue'
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import Navbar from '../../components/navbar/navbar.vue'
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const userLocation = ref()
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// 根据经纬度计算距离,根据经纬度计算距离，参数分别为第一点的纬度，经度（用户）；第二点的纬度，经度(设备)
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const getDistances = (lat1, lon1, lat2, lon2) => {
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let EARTH_RADIUS = 6378.137;// 地球半径
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let radLat1 = lat1 * Math.PI / 180.0; //lat1 * Math.PI / 180.0=>弧度计算
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let radLat2 = lat2 * Math.PI / 180.0;
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let a = radLat1 - radLat2;
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let b = lon1 * Math.PI / 180.0 - lon2 * Math.PI / 180.0;
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let s = 2 * Math.asin(Math.sqrt(Math.pow(Math.sin(a / 2), 2) + Math.cos(radLat1) * Math.cos(radLat2) * Math.pow(Math.sin(b / 2), 2)));
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s = s * EARTH_RADIUS;
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s = Math.round(s * 10000) / 10000;// 输出为公里
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return { m: s * 1000, km: Number(s.toFixed(2)) }
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}
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onMounted(() => {
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userLocation.value = JSON.parse(uni.getStorageSync('userLocation'))
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})
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</script>
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<style lang="scss" scoped>
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</style>
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