73 lines
3.1 KiB
JavaScript
73 lines
3.1 KiB
JavaScript
import { Feature } from '../types/Feature';
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export class Location extends Feature {
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latitude;
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longitude;
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lastTimestamp;
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acceptableLatency;
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constructor(acceptableLatency) {
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super();
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this.acceptableLatency = acceptableLatency || 1000;
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}
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get() {
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return {
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latitude: this.latitude,
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longitude: this.longitude,
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lastTimestamp: this.lastTimestamp,
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};
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}
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async refresh() {
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if (process.env.OAK_PLATFORM === 'wechatMp') {
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// 小程序平台
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const result = await wx.getLocation({
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type: 'gcj02',
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});
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this.latitude = result.latitude;
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this.longitude = result.longitude;
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this.lastTimestamp = Date.now();
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}
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else {
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const getGeolocation = () => new Promise((resolve, reject) => {
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if (navigator.geolocation) {
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navigator.geolocation.getCurrentPosition((position) => {
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// 1. coords.latitude：估计纬度
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// 2. coords.longitude：估计经度
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// 3. coords.altitude：估计高度
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// 4. coords.accuracy：所提供的以米为单位的经度和纬度估计的精确度
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// 5. coords.altitudeAccuracy：所提供的以米为单位的高度估计的精确度
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// 6. coords.heading： 宿主设备当前移动的角度方向，相对于正北方向顺时针计算
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// 7. coords.speed：以米每秒为单位的设备的当前对地速度
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const coords = position.coords;
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const location = {
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accuracy: coords.accuracy,
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altitude: coords.altitude,
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altitudeAccuracy: coords.altitudeAccuracy,
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heading: coords.heading,
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latitude: coords.latitude,
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longitude: coords.longitude,
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speed: coords.speed,
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};
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resolve(location);
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}, (error) => {
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reject(error);
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}, {
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// 指示浏览器获取高精度的位置，默认为false
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enableHighAccuracy: true,
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// 指定获取地理位置的超时时间，默认不限时，单位为毫秒
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timeout: 10000,
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// 最长有效期，在重复获取地理位置时，此参数指定多久再次获取位置。
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maximumAge: 3000,
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});
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}
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else {
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reject('Your browser does not support Geolocation!');
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}
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});
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const result = (await getGeolocation());
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this.lastTimestamp = Date.now();
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this.latitude = result.latitude;
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this.longitude = result.longitude;
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}
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this.publish();
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}
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}
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