apls8000/pages/home/home.js

const app = getApp()
// pages/home/home.js
Page({
    /**
     * 页面的初始数据
     */
    data: {
        bestFrame: 0,
        bestMultiFrame: 0,
        bleDataList: [],//蓝牙设备队列，包括mac和rssi项

        installBtsList: [],//安装基站列表
        btsMinCoordX: 0,
        btsMaxCoordX: 0,
        btsMinCoordY: 0,
        btsMaxCoordY: 0,

        canvasCtx: null, //画布
        canvasWidth: 0, //画布宽度
        canvasHeight: 0, //画布高度
        canvasPixelRatio: 1,//画布像素比例

        coordDataList: [],//定位坐标数据队列

    },
    /**
     * 生命周期函数--监听页面加载
     */
    onLoad(options) {
        //创建线程
        app.createWorker(this.workerMessageListenerHome)

        app.createRecorder()//创建录音设备

        //TODO，测试用接口，后期改成从服务器上读取安装基站数据
        this.generateMultiInstallBts() //生成定位基站

        this.initCanvas()//初始化画布

        //启动三轴加速计
        app.startImu()
    },
    /**
     * 生命周期函数--监听页面初次渲染完成
     */
    onReady() {

    },
    /**
     * 生命周期函数--监听页面显示
     */
    onShow() {

    },
    /**
     * 生命周期函数--监听页面隐藏
     */
    onHide() {

    },
    /**
     * 生命周期函数--监听页面卸载
     */
    onUnload() {
        if (app.data.worker != null) {
            app.data.worker.postMessage({
                message: 'MAIN_WORKER_FREE_MEMORY',
                data: ''
            })
        }
    },
    /**
     * 页面相关事件处理函数--监听用户下拉动作
     */
    onPullDownRefresh() {

    },
    /**
     * 页面上拉触底事件的处理函数
     */
    onReachBottom() {

    },
    /**
     * 用户点击右上角分享
     */
    onShareAppMessage() {
    },
    //线程监听服务程序
    workerMessageListenerHome(res) {
        switch (res.message) {
            case 'WORKER_MAIN_START_MONITOR_BLE_BTS':
                app.openBleAdapter()//打开蓝牙设备
                break
            case 'WORKER_MAIN_ORGANIZE_INSTALL_BTS_DATA':
                this.organizeInstallBtsData()//组织安装基站
                break
            case 'WORKER_MAIN_START_REC'://开始录音
                app.createRecorder()
                break
            case 'WORKER_MAIN_CURRENT_LOCATION_COORD'://当前定位坐标
                this.drawLocationTrace(res.data)
                break
            case 'WORKER_MAIN_NOTICE_DOWNLOAD_AUDIO_FILE':
                this.downloadAudioFile()
                break
            case 'WORKER_MAIN_NOTICE_READ_AUDIO_FILE':
                this.readAudioFile()
                break
            case 'WORKER_MAIN_SAVE_AUDIO_DATA':
                app.saveAduioDataToBin(res.data)
                break
            default:
                break
        }
    },
    //初始化画布
    initCanvas() {
        //获得屏幕数据
        let self = this
        wx.getSystemInfo({
            success: (res) => {
                self.data.canvasPixelRatio = res.pixelRatio
                let myCanvasWidth = res.windowWidth - 5
                self.setData({
                    canvasWidth: myCanvasWidth,
                    canvasHeight: myCanvasWidth
                })
            }
        })

        //为画布选择一个容器
        wx.createSelectorQuery().select('#homeCanvas').fields({ node: true, size: true }).exec((res) => {
            let canvas = res[0].node
            if (canvas) {
                this.data.canvasCtx = canvas.getContext('2d')
                canvas.width = res[0].width * this.data.canvasPixelRatio
                canvas.height = res[0].height * this.data.canvasPixelRatio
                this.data.canvasCtx.scale(this.data.canvasPixelRatio, this.data.canvasPixelRatio)

                this.drawPosition(0, 0, 0, 0)
            }
        })
    },
    //组织安装基站数据
    organizeInstallBtsData() {
        let dataList = []//数据队列
        let oneItem = {}

        //按照wasm模块要求的数据格式组织数据
        dataList.push(this.data.installBtsList.length)
        for (let i = 0; i < this.data.installBtsList.length; i++) {
            oneItem = this.data.installBtsList[i]
            dataList.push(oneItem.dwBuildId)
            dataList.push(oneItem.dwLayerId)

            dataList.push(oneItem.dwBtsId)
            dataList.push(oneItem.dwFreqIndex)
            dataList.push(oneItem.dwSlot)

            dataList.push(oneItem.dwCoordX)
            dataList.push(oneItem.dwCoordY)
            dataList.push(oneItem.dwCoordZ)

            //一维定位数据
            dataList.push(oneItem.dwLctType)
            dataList.push(oneItem.dwTwoBtsNum)
            for (let i = 0; i < oneItem.dwTwoBtsNum; i++) {
                dataList.push(oneItem.adwTwoBtsList[i])
            }
            for (let i = oneItem.dwTwoBtsNum; i < 6; i++) {
                dataList.push(0)
            }

            //蓝牙mac
            for (let j = 0; j < 12; j++) {
                dataList.push(oneItem.adwBluetoothMac[j])
            }

            //wifi mac
            for (let k = 0; k < 12; k++) {
                dataList.push(oneItem.adwWifiMac[k])
            }
        }

        //将基站数据发送给worker
        if (app.data.worker != null) {
            app.data.worker.postMessage({
                message: 'MAIN_WORKER_INSTALL_BTS_DATA',
                data: dataList//安装基站数据
            })
        }
    },
    //生成多个安装基站
    generateMultiInstallBts() {
        let oneItem = {}
        let maxTmpX = -10000000
        let minTmpX = 10000000
        let maxTmpY = -10000000
        let minTmpY = 10000000
        let xTmp = 0
        let yTmp = 0

        let btsNum = 5;//基站数量

        //清空基站队列
        this.data.installBtsList = []

        // a81710d94e04 1号基站
        // a81710d9a1c8 2号基站
        // a81710d8f9be 3号基站
        // a81710d91a5e 4号基站

        // 1号基站，基站ID，频率ID(0 - 8)，时隙ID(0 - 3)，X坐标(单位厘米)，Y坐标(单位厘米)，MAC地址，定位类型，1维定位基站数，1维定位基站ID队列
        oneItem = this.generateOneInstallBts(10001, 0, 0, 0, 0, "685377178192", 2, 0, "")
        this.data.installBtsList.push(oneItem)

        //2号基站
        oneItem = this.generateOneInstallBts(10002, 1, 1, 2500, 0, "685377183652", 3, 1, "10005")
        this.data.installBtsList.push(oneItem)

        //3号基站
        oneItem = this.generateOneInstallBts(10003, 2, 2, 2500, 800, "6853771679b0", 2, 0, "")
        this.data.installBtsList.push(oneItem)

        //4号基站
        oneItem = this.generateOneInstallBts(10004, 3, 3, 0, 800, "68537716c686", 2, 0, "")
        this.data.installBtsList.push(oneItem)

        //5号基站
        oneItem = this.generateOneInstallBts(10005, 4, 0, 5000, 0, "685377183238", 1, 1, "10002")
        this.data.installBtsList.push(oneItem)

        // //6号基站
        // oneItem = this.generateOneInstallBts(10006, 5, 0, 5500, 0, "685377174ea4", 1, 1, "10005")
        // this.data.installBtsList.push(oneItem)


        // //7号基站
        // oneItem = this.generateOneInstallBts(2097114, 6, 0, 500, 180, "a81710d94198", 2, 1, "0")
        // this.data.installBtsList.push(oneItem)

        // // //8号基站
        // // oneItem = this.generateOneInstallBts(2097110, 7, 0, 800, 1800, "a81710d951dc")
        // // this.data.installBtsList.push(oneItem)

        for (let i = 0; i < btsNum; i++) {
            xTmp = this.data.installBtsList[i].dwCoordX
            if (xTmp > maxTmpX) {
                maxTmpX = xTmp
            }
            if (xTmp < minTmpX) {
                minTmpX = xTmp
            }

            yTmp = this.data.installBtsList[i].dwCoordY
            if (yTmp > maxTmpY) {
                maxTmpY = yTmp
            }
            if (yTmp < minTmpY) {
                minTmpY = yTmp
            }
        }

        //保存值
        this.setData({
            btsMinCoordX: minTmpX,
            btsMaxCoordX: maxTmpX,
            btsMinCoordY: minTmpY,
            btsMaxCoordY: maxTmpY
        })
    },
    //生成一个安装基站数据
    generateOneInstallBts(dwBtsId, dwFreqIndex, dwSlot, dwCoordX, dwCoordY, macAddressList, dwLctType, dwTwoBtsNum, adwTwoBtsList) {
        let installBts = {}
        let oneCharHex = ''
        let oneCharHexValue = 0

        installBts.dwBuildId = 1
        installBts.dwLayerId = 1

        installBts.dwBtsId = dwBtsId
        installBts.dwFreqIndex = dwFreqIndex
        installBts.dwSlot = dwSlot

        installBts.dwCoordX = dwCoordX
        installBts.dwCoordY = dwCoordY
        installBts.dwCoordZ = 270

        //定位类型，1：一维定位，2：二维定位，3：既支持一维定位也支持二维定位
        installBts.dwLctType = dwLctType

        //一维定位基站数量
        installBts.dwTwoBtsNum = dwTwoBtsNum;

        //一维定位基站ID队列
        installBts.adwTwoBtsList = []
        let btsIdList = adwTwoBtsList.split(",")
        let btsId = 0

        // if (btsIdList.length != dwTwoBtsNum) {
        //     console.log("长度错误")
        //     return;
        // }
        for (let k = 0; k < dwTwoBtsNum; k++) {
            btsId = parseInt(btsIdList[k])
            console.log("基站ID：", btsId)
            installBts.adwTwoBtsList.push(btsId)
        }

        //蓝牙mac
        installBts.adwBluetoothMac = []
        for (let i = 0; i < 12; i++) {
            oneCharHex = macAddressList[i]
            oneCharHexValue = app.hexCharToValue(oneCharHex)
            installBts.adwBluetoothMac.push(oneCharHexValue)
        }

        //wifi mac
        installBts.adwWifiMac = []
        for (let j = 0; j < 12; j++) {
            oneCharHex = macAddressList[j]
            oneCharHexValue = app.hexCharToValue(oneCharHex)
            installBts.adwWifiMac.push(oneCharHexValue)
        }

        console.log(installBts)
        return installBts
    },
    //TODO，生成蓝牙基站数据
    generateBleBtsData() {
        let mac = "123456789ABC"
        let rssi = -58
        let item = {}
        item['mac'] = mac;
        item['rssi'] = rssi

        let dataList = []
        dataList.push(item)

        app.data.worker.postMessage({
            message: 'MAIN_WORKER_BLE_BTS_DATA',
            code: 100,
            data: dataList
        })
    },
    //从服务器上下载文件
    downloadAudioFile() {
        const url = "https://www.stp.intourism.cn/tdsadmin/line390-zt.wav"

        wx.downloadFile({
            url: url,
            success: (res) => {
                if (res.statusCode == 200) {
                    app.data.wavFilePath = res.tempFilePath
                    this.readAudioFile();
                }
            }
        })
    },
    // 读取音频文件
    readAudioFile() {
        let filePath = app.data.wavFilePath

        if (app.data.readFileTimes == null) {
            return
        }

        //90秒数据
        if (app.data.readFileTimes >= 360) {
            app.data.readFileTimes = 0
            return
        }

        const times = app.data.readFileTimes
        const fs = wx.getFileSystemManager();
        fs.readFile({
            filePath: `${filePath}`,
            position: 44 + times * 12000 * 2,
            length: 12000 * 2,//12000点，每点2个字节
            success: (res) => {
                app.data.readFileTimes++
                app.data.worker.postMessage({
                    message: 'MAIN_WORKER_AUDIO_DATA',
                    data: res.data
                })
            },
            fail(res) {
                console.log(res);
            }
        })
    },
    drawPosition(type, coordinateX, coordinateY, coordDataList) {
        let i = 0
        let pos = 0
        let space = 10
        let lineCount = 40

        let ctxMinX = this.data.btsMinCoordX - 500
        let ctxMaxX = this.data.btsMaxCoordX + 500
        let ctxMinY = this.data.btsMinCoordY - 500
        let ctxMaxY = this.data.btsMaxCoordY + 500
        let ctxWidth = ctxMaxX - ctxMinX
        let ctxHeight = ctxMaxY - ctxMinY

        let radio = this.data.canvasWidth / ctxWidth
        let radioHeight = this.data.canvasHeight / ctxHeight
        if (radioHeight < radio) {
            radio = radioHeight
        }

        let positionCtx = this.data.canvasCtx
        positionCtx.fillStyle = "#0066FF"
        positionCtx.clearRect(0, 0, this.data.canvasWidth, this.data.canvasHeight)
        positionCtx.lineWidth = 0.5

        //// 画网格
        positionCtx.beginPath()
        positionCtx.strokeStyle = '#CCCCCC'

        //1、画网格横线
        space = parseFloat(this.data.canvasWidth) / lineCount
        for (i = 0; i < lineCount; i++) {
            pos = i * space
            positionCtx.moveTo(0, pos)
            positionCtx.lineTo(this.data.canvasWidth, pos)
        }

        //2、画网格竖线
        space = parseFloat(this.data.canvasHeight) / lineCount
        for (i = 0; i < lineCount; i++) {
            pos = i * space
            positionCtx.moveTo(pos, 0)
            positionCtx.lineTo(pos, this.data.canvasHeight)
        }
        positionCtx.stroke()

        if (type === 0) { //仅画网格
            return
        }

        // 画基站
        positionCtx.beginPath()
        positionCtx.fillStyle = "#FF0000"
        positionCtx.strokeStyle = '#FF0000'
        for (i = 0; i < this.data.installBtsList.length; i++) {
            let x = (this.data.installBtsList[i].dwCoordX - ctxMinX) * radio
            let y = this.data.canvasHeight - (this.data.installBtsList[i].dwCoordY - ctxMinY) * radio
            positionCtx.fillRect(x - 5, y - 5, 6, 6);
            // if (masterFreqFrequency === app.store.signal.ubsList[i].device_frequency) {
            //     positionCtx.fillRect(x - 8, y - 8, 16, 16);
            // } else {
            //     positionCtx.fillRect(x - 5, y - 5, 10, 10);
            // }
        }

        // 画轨迹线
        positionCtx.lineWidth = 1.2
        positionCtx.beginPath()
        positionCtx.strokeStyle = '#0A0A0A'
        for (i = 2; i < coordDataList.length; i++) {
            let point = coordDataList[i - 1]
            let x = (point.x - ctxMinX) * radio
            let y = this.data.canvasHeight - (point.y - ctxMinY) * radio
            positionCtx.moveTo(x, y)

            point = coordDataList[i]
            x = (point.x - ctxMinX) * radio
            y = this.data.canvasHeight - (point.y - ctxMinY) * radio
            positionCtx.lineTo(x, y)
        }
        positionCtx.stroke()

        // 画当前位置
        positionCtx.beginPath()
        positionCtx.fillStyle = "#0000FF"
        positionCtx.strokeStyle = '#0000FF'
        let x = (coordinateX - ctxMinX) * radio
        let y = this.data.canvasHeight - (coordinateY - ctxMinY) * radio
        positionCtx.arc(x, y, 3, 0, 2 * Math.PI);
        positionCtx.fill()
    },
    drawLocationTrace(coord) {
        let x = coord.x
        let y = coord.y

        //保存定位坐标
        this.data.coordDataList.push(coord)

        this.drawPosition(1, x, y, this.data.coordDataList)
    }
})