百度舆图API标注+时间轴组件

事情时被请求到的,连系百度舆图api做一个动态展现标注变化的组件,请求舆图展现某一天的标注,时刻轴请求能够动态播放每一天的标注变化…然后我就最先coding…

若有不好的处所,还请人人指出,我也是小白中的一员,接下来最先正文

准备事情:

  1. 请求百度api密钥(详细要领我也不多写了,人人应当都邑)    

  2. 相识一下百度舆图API的开辟指南和类参考文档(假如嫌贫苦的话 能够直接看Demo示例)

一、起首,先加载舆图,你能够用现实的经纬度定位、浏览器定位、依据ip定位、依据城市名定位,这个你能够本身挑选

// 建立Map实例,设置舆图许可的最小/大级别
var map = this.map;
map.centerAndZoom(new BMap.Point(121.365593, 37.528502), 15); // 初始化舆图,用城市名设置舆图中心点
//map.enableScrollWheelZoom(true); //启用滚轮放大减少

centerAndZoom(center:Point, zoom:Number)  

参数诠释:

  1. Point(lng:Number, lat:Number)  以指定的经度和纬度建立一个地舆点坐标。

  2. zoom:number         舆图缩放级别

二、标注的运用(掩盖物)

连系百度舆图api示例Demo 设置点的新图标和增加多个点示例 连系一下,就能够改写成增加多个舆图标注

//编写自定义函数,建立标注
        addMarker: function(point, label, status) {
            //        var marker = new BMap.Marker(point);
            var myIcon = new BMap.Icon("images/rubbish_" + status + ".png", new BMap.Size(32, 32), {
                anchor: new BMap.Size(16, 32), //中心点设置
                infoWindowAnchor: new BMap.Size(16, 4) //音讯框位置5
            });
            var marker = new BMap.Marker(point, {
                icon: myIcon
            });
            TimerLine.map.addOverlay(marker);
            //跳动的动画
            //                marker.setAnimation(BMAP_ANIMATION_BOUNCE);
            marker.setAnimation(BMAP_ANIMATION_DROP);
            var p = marker.getPosition();
            var content = "<table>";
            content = content + "<tr><td> 编号:" + label.content + "</td></tr>";
            content = content + "<tr><td> 坐标:" + p.lng + "," + p.lat + "</td></tr>";
            content = content + "<tr><td> 状况:" + status + "</td></tr>";
            content += "</table>";
            var infowindow = new BMap.InfoWindow(content);
            //增加绑定事宜
            addEvent(marker, 'click', getAttr);
            function getAttr() {
                this.openInfoWindow(infowindow);
            }
    }

百度舆图标注增加看懂了,接下来就是动态增加标注,而且随和日期的变化而变化,比方展现垃圾箱的动态变化,8.3号清算了色彩为绿色,8.6号没清算为赤色..

头脑:

  1. 动态:就要运用ajax异步猎取数据

  2. 变化:就要运用定时器(setInterval或许 setTimeout)
    setInterval 轮回挪用

setTimeout 耽误挪用 1次     详细区分能够自行百度

  1. 动手写插件

function addEvent(dom, type, fn) {
    //关于支撑DOM2级事宜处置惩罚顺序addeventListener要领的浏览器
    if (dom.addEventListener) {
        dom.addEventListener(type, fn, false);
    } else if (dom.attachEvent) {
        //关于不支撑addEventListener要领但支撑attchEvent要领的浏览器    
        dom.attachEvent('on' + type, fn);
    } else {
        //关于不支撑以上两种,但支撑on+'事宜名'的浏览器
        dom['on' + type] = fn;
    }
}
var TimerLine = {
    data: {
        containerDiv: 'timerline', //容器盒子id
        datesDiv:'dates',//日期盒子id
        btnsDiv:'timerlineBtns',
        btns: {
            play: "timerbtn-play",
            stop: "timerbtn-stop",
            pre:"timerbtn-pre",
            next:"timerbtn-next"
        },
        processDiv:'processbar',    //进度条div
    },
    protect:{
        lock_play:false,
        lock_stop:false,
        index_label:1,
        index_process:0
    },
    rubbish_datas: [], //用来存储ajax猎取到的数据
    index: 0, //变化的index
    Interval_label: null,
    Interval_process:null,
    map: new BMap.Map("allmap", {
        minZoom: 14,
        maxZoom: 20
    }),
    Utils: {
        //编写自定义函数,建立标注
        addMarker: function(point, label, status) {
            //        var marker = new BMap.Marker(point);
            var myIcon = new BMap.Icon("images/rubbish_" + status + ".png", new BMap.Size(32, 32), {
                anchor: new BMap.Size(16, 32), //中心点设置
                infoWindowAnchor: new BMap.Size(16, 4) //音讯框位置5
            });
            var marker = new BMap.Marker(point, {
                icon: myIcon
            });
            TimerLine.map.addOverlay(marker);
            //跳动的动画
            //                marker.setAnimation(BMAP_ANIMATION_BOUNCE);
            marker.setAnimation(BMAP_ANIMATION_DROP);
            var p = marker.getPosition();
            var content = "<table>";
            content = content + "<tr><td> 编号:" + label.content + "</td></tr>";
            content = content + "<tr><td> 坐标:" + p.lng + "," + p.lat + "</td></tr>";
            content = content + "<tr><td> 状况:" + status + "</td></tr>";
            content += "</table>";
            var infowindow = new BMap.InfoWindow(content);
            //增加绑定事宜
            addEvent(marker, 'click', getAttr);
            function getAttr() {
                this.openInfoWindow(infowindow);
            }
        },
        /**
         * 舆图标注要领
         * 参数:        datas:标注物数组{date:"",info:{}}
         *             index:序数(日期)
         * */
        mapSetLabel: function(datas, n,isInterval) {
            TimerLine.map.clearOverlays();
            var index;
            console.log(TimerLine.protect.index_label);
            if(isInterval){
                TimerLine.protect.index_label++;
                if (TimerLine.protect.index_label >= TimerLine.rubbish_datas.length - 1) {
                    TimerLine.protect.index_label = TimerLine.rubbish_datas.length - 1;
                    clearInterval(TimerLine.Interval_label);
                    TimerLine.protect.lock_play=false;
                }
            }
            
            if (n == null) {
                if(TimerLine.protect.index_label==0){
                    TimerLine.protect.index_label=1
                }
                index = TimerLine.protect.index_label;
            } else {
                index = parseInt(n);
                TimerLine.protect.index_label = index;
            }
            
            var info = datas[index].info;
            var info_count=0;
            var addMarker_Interval=setInterval(function(){
                var p = info[info_count].point.split(',');
                var p_x = parseFloat(p[0].toString()); //纬度
                var p_y = parseFloat(p[1].toString()); //经度
                //建立label标签
                var label = new BMap.Label(info[info_count].title, {
                    offset: new BMap.Size(20, -10)
                });
                //建立标注点
                var point = new BMap.Point(p_x, p_y);
                //状况(垃圾箱状况)
                var status = info[info_count].status;            
                //增加标注的要领
                TimerLine.Utils.addMarker(point, label, status);
                info_count++;
                if(info_count>=info.length){
                    clearInterval(addMarker_Interval);
                }
            },0);

        },
        //增加日期点击事宜绑定 dates li click
        bindEvent: function() {
            var datesDiv = document.getElementById("dates");
            addEvent(datesDiv,'click',function(e){
                var event = e || window.e;
                var target = event.target || event.srcElement;
                for(var i=0;i<TimerLine.rubbish_datas.length;i++){
                    if(target.innerText==TimerLine.rubbish_datas[i].date){
//        
                        TimerLine.protect.index_process=i;
                        TimerLine.protect.index_label=i;
                        //播放解锁
                        if(TimerLine.protect.lock_play)    TimerLine.protect.lock_play=false;
                        TimerLine.Utils.mapSetLabel(TimerLine.rubbish_datas, i,false);
                        TimerLine.Utils.Setprocess(i,false);
                        return ;
                    }
                }
            })
        },
        //进度条转动
        Setprocess:function(index,isInterval){
            if(isInterval){
                TimerLine.protect.index_process++;
                console.log(TimerLine.protect.index_process);
                console.log(TimerLine.rubbish_datas.length);
                if(TimerLine.protect.index_process >= TimerLine.rubbish_datas.length-1){
                    TimerLine.protect.index_process = TimerLine.rubbish_datas.length-1;
                    clearInterval(TimerLine.Interval_process);
                    TimerLine.protect.lock_play=false;
                }
            }
            var datesDiv = document.getElementById("dates");
            var processDiv = document.getElementById(TimerLine.data.processDiv);
            if(index==null){
                processDiv.style.width =parseInt(processDiv.style.width)+datesDiv.getElementsByTagName('li')[0].offsetWidth+'px';
            }else{
                processDiv.style.width =datesDiv.getElementsByTagName('li')[0].offsetWidth*parseInt(index+1)+'px';
            }
            
        }
        
    },
    //TimerLine初始化
    init: function() {
        this.createMap();
        this.ajaxCreate();
        //事宜绑定
        this.bindEvent();
    },
    createMap: function() {
        // 建立Map实例,设置舆图许可的最小/大级别
        var map = this.map;
        map.centerAndZoom(new BMap.Point(121.365593, 37.528502), 15); // 初始化舆图,用城市名设置舆图中心点
        //map.enableScrollWheelZoom(true); //启用滚轮放大减少
    },
    ajaxCreate: function() {
        var That = this;
        var containerDiv = That.data.containerDiv;
        $.ajax({
            type: "get",
            url: "js/json.json",
            dataType: 'json',
            success: function(data) {
                containerDiv = document.getElementById(containerDiv); //容器id
                That.rubbish_datas = data.result.datas; //
                //console.log(That.rubbish_datas);
                That.create(containerDiv, That.rubbish_datas);
                //日期时刻绑定
                That.Utils.bindEvent();
            }
        });
    },
    create: function(containerDiv, datas) {
        var That = this;
        var datasDiv ='<div class="processcontainer"><div id="processbar" style="width:120px;"></div></div>';
//        var datasDiv = '<ul id="dates" class="timerlineul dates clearfix">';
        datasDiv += '<ul id="dates" class="timerlineul dates clearfix">';
        for (var i = 0; i < datas.length; i++) {
            datasDiv += '<li>' + datas[i].date + '</li>';
        }
        datasDiv += '</ul>';    
        document.getElementById(That.data.btnsDiv).innerHTML='<div class="timerline-btns clearfix"><div id="timerbtn-pre" class="iconfont icon-shangyishou"></div><div id="timerbtn-play" class="iconfont icon-zanting"></div><div id="timerbtn-next" class="iconfont icon-xiayishou"></div></div>'
        //建立第一天的标注
        this.Utils.mapSetLabel(datas, 0,false);
        
//        console.log(TimerLine.index);
        That.datas = datas;
        containerDiv.innerHTML = datasDiv;
    },
    //播放 停息 托付事宜----时刻绑定
    bindEvent: function() {
        if (this.data.btns == null)
            return;
        var That = this;
        addEvent(document.getElementById(That.data.btnsDiv), 'click', function(e) {
            var event = e || window.e;
            var target = event.target || event.srcElement;
            //播放事宜
            if (target.id == That.data.btns.play) {
                if(!TimerLine.protect.lock_play){
                    if(TimerLine.protect.index_label >= TimerLine.rubbish_datas.length-1){
                        TimerLine.protect.index_label=0;
                        var processDiv = document.getElementById(TimerLine.data.processDiv);
                        var datesDiv = document.getElementById("dates");
                        processDiv.style.width = datesDiv.getElementsByTagName('li')[0].offsetWidth+'px';
                    }
                    if(TimerLine.protect.index_process >= TimerLine.rubbish_datas.length-1){
                        TimerLine.protect.index_process=0;
                    }
//                
                    TimerLine.Interval_label = setInterval("TimerLine.Utils.mapSetLabel(TimerLine.rubbish_datas,null,true)", 1000);
                    TimerLine.Interval_process = setInterval("TimerLine.Utils.Setprocess(null,true)",1000);    
                    $("#timerbtn-play").attr("class","iconfont icon-zanting1");
                    //播放桎梏
                    TimerLine.protect.lock_play=true;
                    //停息解锁
                    TimerLine.protect.lock_stop=false;
                }else if(TimerLine.protect.lock_play){
                    $("#timerbtn-play").attr("class","iconfont icon-zanting");
                    TimerLine.Interval_label&&clearInterval(TimerLine.Interval_label);
                    TimerLine.Interval_process&&clearInterval(TimerLine.Interval_process);
                    //播放解锁
                    TimerLine.protect.lock_play=false;
                    //停息加锁
                    TimerLine.protect.lock_stop=true;
                }
            }
            
            if(target.id == That.data.btns.pre){
                if(TimerLine.protect.index_label==0) return;
                TimerLine.Utils.mapSetLabel(TimerLine.rubbish_datas, TimerLine.protect.index_label-1,false);
                TimerLine.Utils.Setprocess(TimerLine.protect.index_process-1,false);
                TimerLine.protect.index_process=TimerLine.protect.index_process-1;
            }
            if(target.id == That.data.btns.next){
                if(TimerLine.protect.index_label==TimerLine.rubbish_datas.length-1) return;
                TimerLine.Utils.mapSetLabel(TimerLine.rubbish_datas, TimerLine.protect.index_label+1,false);
                TimerLine.Utils.Setprocess(TimerLine.protect.index_process+1,false);
                TimerLine.protect.index_process=TimerLine.protect.index_process+1;
            }
        });
    }
}

TimerLine.init();

以上是我本身手写的组件代码,对设想形式相识照样平常.本来是想用原型形式写,不过在setInterval时刻,要领没法挪用原型要领,让后我就改成了单例形式

TimeLine组件引见

  1. data:数据容器绑定

  2. protect 庇护属性 (对播放、停息、时刻轴index、标注index)

  3. rubbish_datas 存储ajax读取的数据

  4. Interval_label 百度舆图标注定时器

  5. Interval_process 时刻轴定时器

  6. Utils 东西类

  7. init() TimeLine初始化

  8. createMap() 建立百度舆图

  9. ajaxCreate() 猎取数据,建立容器(create()),时刻绑定(bindEvent())

碰到的题目:

  1. 两个定时器运转时,大众index 轻易读取毛病,一个定时器修正了index 另一个定时器还没修正,如许造成了建立标注与当前时刻不符合,

注:要将修正大众变量只管写在一个要领中。大众变量最好不要在多个要领中公用,轻易在增减的时刻涌现不必要的BUG

  1. 定时器运转到最后一天的时刻要将定时器消灭。

顺序如图:《百度舆图API标注+时间轴组件》

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《百度舆图API标注+时间轴组件》

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能够关注微信民众号 复兴百度舆图时刻轴组件 ,即可收到 Demo 的地点。

    原文作者:DemonGao
    原文地址: https://segmentfault.com/a/1190000008647469
    本文转自网络文章,转载此文章仅为分享知识,如有侵权,请联系博主进行删除。
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