微信小程序中使用ibeacon怎么實現(xiàn)三點定位
微信小程序中使用ibeacon怎么實現(xiàn)三點定位，相信很多沒有經(jīng)驗的人對此束手無策，為此本文總結(jié)了問題出現(xiàn)的原因和解決方法，通過這篇文章希望你能解決這個問題。
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var app = getApp()
Page({
data: {
motto: 'Hello World',
openBLE:'打開藍(lán)牙設(shè)備',
startBLEDiscovery:'初始化藍(lán)牙設(shè)備',
startBLEDevices:'目標(biāo)定位',
reStartSearchBLE:'重置藍(lán)牙',
startSearchBLE:'默認(rèn)空',
userInfo: {},
deviceId: '',
searchFlag:true,
deviceRSSI:'',
deviceName:'',
deviceId:[],
advertisServiceUUIDs: [],
advertisData:[],
canvasPointX:'',
canvasPointY:'',
avatarUrl:'../index/bg-image.jpg',
showPosition:''
},
//事件處理函數(shù)
bindViewTap: function() {
wx.navigateTo({
url: '../logs/logs'
})
},
onLoad: function () {
var that = this
//調(diào)用應(yīng)用實例的方法獲取全局?jǐn)?shù)據(jù)
//that.setData({ deviceId: opt.deviceId })
app.getUserInfo(function(userInfo){
//更新數(shù)據(jù)
that.setData({
userInfo:userInfo
})
//判斷兼容性
if (wx.openBluetoothAdapter) {
//打開藍(lán)牙適配器，如果沒有打開 showtoast
wx.openBluetoothAdapter({
success: function(res){
// success
//獲取本機(jī)的藍(lán)牙適配器狀態(tài)
wx.getBluetoothAdapterState({
success: function(res){
// success
that.setData({
searchFlag:true
})
},
fail: function(res) {
// fail
that.setData({
searchFlag:false
})
},
complete: function(res) {
// complete
}
})
},
fail: function(res) {
// fail 本機(jī)是否已經(jīng)打開藍(lán)牙設(shè)備
wx.showToast({title:'請打開本機(jī)藍(lán)牙設(shè)備，重新掃碼', duration:10000 })
},
complete: function(res) {
// complete
}
})
} else {
// 如果希望用戶在最新版本的客戶端上體驗?zāi)男〕绦?，可以這樣子提示
wx.showModal({
title: '提示',
content: '當(dāng)前微信版本過低，無法使用該功能，請升級到最新微信版本后重試。'
})
}
})
},
startBLEDevices: function(){
var that = this
wx.startBluetoothDevicesDiscovery({
services: [],
success: function(res){
//獲取本機(jī)藍(lán)牙設(shè)備狀態(tài)
// success
that.setData({
showPosition:setInterval(that.devicesFunc,1000)
})
},
fail: function(res) {
// fail
},
complete: function(res) {
// complete
}
})
},
// startBLEDevices: function(){
// var that = this
// that.setData({
// showPosition:setInterval(that.devicesFunc,1000)
// })
// },
devicesFunc: function(){
var that = this
wx.getBluetoothDevices({
success: function(res){
// console.log(res);
var arrayRSSI = new Array();
var arraydeviceName = new Array();
var arraydeviceId = new Array();
// var arrayUUIDs = new Array();
var arrayadvertisData = new Array();
var pointADistance = '';
var pointBDistance = '';
var pointCDistance = '';
for(var i = 0; i<res.devices.length;i++){
//console.log(res.devices[i].name);
if(res.devices[i].name.indexOf('craft')==0){
//console.log(res.devices[i]);
arrayRSSI.push(res.devices[i].RSSI);
arraydeviceName.push(res.devices[i].name);
arraydeviceId[i]= res.devices[i].deviceId;
arrayUUIDs[i]= res.devices[i].advertisServiceUUIDs[i];
arrayadvertisData[i]= res.devices[i].advertisData ;
調(diào)用計算rssi對應(yīng)距離的函數(shù)
var iRssi = Math.abs(arrayRSSI[i]);
var power = (iRssi-59)/(10*2.0);
var mm = Math.pow(10, power);
console.log(arraydeviceName[i]+"距離的位置是"+mm+"米");
取01，02，03分別為，（2，0），（2，2），（0，2）固定坐標(biāo)點，做定位
if(res.devices[i].name.indexOf('craft01')==0){
var pointARSSi = res.devices[i].RSSI ;
var iRssi = Math.abs(pointARSSi);
var power = (iRssi-55)/(10*2.0);
var pointADistance = Math.pow(10, power);
console.log("a"+pointADistance);
console.log(pointARSSi);
}
if(res.devices[i].name.indexOf('craft02')==0){
var pointBRSSi = res.devices[i].RSSI;
var iRssi = Math.abs(pointBRSSi);
var power = (iRssi-55)/(10*2.0);
var pointBDistance = Math.pow(10, power);
console.log("b"+pointBDistance);
console.log(pointBRSSi);
}
if(res.devices[i].name.indexOf('craft03')==0){
var pointCRSSi = res.devices[i].RSSI;
var iRssi = Math.abs(pointCRSSi);
var power = (iRssi-57)/(10*2.0);
var pointCDistance = Math.pow(10, power);
console.log("c"+pointCDistance);
console.log(pointCRSSi);
}
}
}
// 從 arrayRSSI 取三個距離定位點最近的ibeacon參與定位
if(arrayRSSI.length > 3){
//根據(jù)arrayRSSI進(jìn)行信號強(qiáng)弱排序.距離越遠(yuǎn)rssi值越小
for(var i = 0 ; i < arrayRSSI.length ; i ++){
for(var j = i+1 ; j< arrayRSSI.length ; j++){
if(arrayRSSI[i]<arrayRSSI[j]){
var select = arrayRSSI[i];
arrayRSSI[i] = arrayRSSI[j];
arrayRSSI[j] = select;
}
}
}
//獲取最近的三個距離
for(var i = 0 ; i < 3; i++){
if(i==0){
var pointARSSi = res.devices[i].RSSI ;
var iRssi = Math.abs(pointARSSi);
var power = (iRssi-55)/(10*2.0);
var pointADistance = Math.pow(10, power);
console.log("a"+pointADistance);
console.log(pointARSSi);
}
if(i==1){
var pointBRSSi = res.devices[i].RSSI;
var iRssi = Math.abs(pointBRSSi);
var power = (iRssi-55)/(10*2.0);
var pointBDistance = Math.pow(10, power);
console.log("b"+pointBDistance);
console.log(pointBRSSi);
}
if(i==2){
var pointCRSSi = res.devices[i].RSSI;
var iRssi = Math.abs(pointCRSSi);
var power = (iRssi-57)/(10*2.0);
var pointCDistance = Math.pow(10, power);
console.log("c"+pointCDistance);
console.log(pointCRSSi);
}
}
}
//獲取定位點的x和y
if(!pointADistance==''&&!pointBDistance==''&&!pointCDistance==''){
var pointDX='';var pointDY = '';
var p = Math.pow(pointADistance,2)/10-Math.pow(pointBDistance,2)/10;
pointDX = 2.5 - p;
var m = Math.pow(pointADistance,2)/10-Math.pow(pointCDistance,2)/10;
pointDY = 2.5 - m;
console.log('目標(biāo)所在位置X是'+pointDX);
console.log('目標(biāo)所在位置Y是'+pointDY);
if(pointDX > 0 && pointDY > 0){
wx.showToast({title:'歡迎進(jìn)入25樓craft', duration:4000 });
}
that.setData({
canvasPointX:pointDX,
canvasPointY:pointDY
})
//創(chuàng)建畫布
//計算坐標(biāo)點在規(guī)定canvas上的位置顯示
var context = wx.createCanvasContext();
context.setStrokeStyle("#00ff00");
//a,b,c,d,e,f a,b起始坐標(biāo)，c半徑，d，e起始和終止角度
context.arc(that.data.canvasPointX*30,that.data.canvasPointY*30,5,0,2*Math.PI);
context.fill();
wx.drawCanvas({
canvasId: 'firstCanvas',
actions: context.getActions() // 獲取繪圖動作數(shù)組
})
wx.showModal({title:'X軸:'+pointDX+'Y軸:'+pointDY, duration:5000 });
//開始網(wǎng)絡(luò)請求
wx.request({
url: 'http://craftww.cn/weixinIbeacon/index.php',
data: {},
method: 'GET', // OPTIONS, GET, HEAD, POST, PUT, DELETE, TRACE, CONNECT
// header: {}, // 設(shè)置請求的 header
success: function(res){
// success
},
fail: function(res) {
// fail
},
complete: function(res) {
// complete
}
})
}else{
wx.showToast({title:'正在搜索...', duration:1000 })
開始網(wǎng)絡(luò)請求
wx.request({
url: 'http://craftww.cn/weixinIbeacon/index.php',
data: {},
method: 'GET', // OPTIONS, GET, HEAD, POST, PUT, DELETE, TRACE, CONNECT
// header: {}, // 設(shè)置請求的 header
success: function(res){
// success
},
fail: function(res) {
// fail
},
complete: function(res) {
// complete
}
})
}
},
fail: function(res) {
// fail
},
complete: function(res) {
// complete
}
})
} ,
//動態(tài)顯示
createList: function(thisName){
var that = this
that.setData({
array:[{deviceDistance:"1"},{deviceDistance:"1"},{deviceDistance:"1"},{deviceDistance:"1"},{deviceDistance:"1"}]
})
},
reStartSearchBLE: function(){
var that = this
//清除本地數(shù)據(jù)緩存
wx.stopBluetoothDevicesDiscovery({
success: function(res){
// success
},
fail: function(res) {
// fail
},
complete: function(res) {
// complete
}
})
wx.clearStorageSync();
clearInterval(that.data.showPosition);
console.log(that.data.showPosition);
// that.context.clearRect(0,0,canvas.width,canvas.height);
//斷開藍(lán)牙
var that = this
wx.closeBluetoothAdapter({
success: function(res){
// success
console.log('重置成功');
//打開藍(lán)牙適配器，如果沒有打開 showtoast
wx.openBluetoothAdapter({
success: function(res){
// success
//獲取本機(jī)的藍(lán)牙適配器狀態(tài)
wx.getBluetoothAdapterState({
success: function(res){
// success
},
fail: function(res) {
// fail
},
complete: function(res) {
// complete
}
})
},
fail: function(res) {
},
complete: function(res) {
// complete
}
})
},
fail: function(res) {
// fail
},
complete: function(res) {
// complete
}
})
}
//zheli
})看完上述內(nèi)容，你們掌握微信小程序中使用ibeacon怎么實現(xiàn)三點定位的方法了嗎？如果還想學(xué)到更多技能或想了解更多相關(guān)內(nèi)容，歡迎關(guān)注創(chuàng)新互聯(lián)行業(yè)資訊頻道，感謝各位的閱讀！
當(dāng)前題目：微信小程序中使用ibeacon怎么實現(xiàn)三點定位
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