百度地圖使用筆記

時間  2019-11-09
標籤 百度 地圖 使用 筆記 简体版
原文   原文鏈接

baidu map api note

地圖級別控制

// 百度地圖API功能
var map = new BMap.Map("allmap", {enableMapClick:false});//構造底圖時，關閉底圖可點功能
    
// 初始化地圖,設置中心點座標(城市名)和地圖級別
map.centerAndZoom("上海",15);    
map.centerAndZoom(new BMap.Point(116.404, 39.915), 11);  

// 移動地圖到中心點 
map.panTo(new BMap.Point(113.262232,23.154345));

// 設置縮放級別 
map.setZoom(14);  

// 開啓地圖縮放 
map.enableScrollWheelZoom();

// 能夠拖拽
marker.enableDragging();

// 不能夠拖拽
marker.disableDragging();

獲取兩點之間距離

var pointA = new BMap.Point(106.486654,29.490295);  // 建立點座標A--大渡口區
    var pointB = new BMap.Point(106.581515,29.615467);  // 建立點座標B--江北區
    alert('從大渡口區到江北區的距離是：'+(map.getDistance(pointA,pointB)).toFixed(2)+' 米。');  //獲取兩點距離

添加 圖形，點，線，面 文字

//  marker是隨着地圖縮放級別，尺寸變化的
var marker = new BMap.Marker(new BMap.Point(116.404, 39.915)); // 建立點

// 折線
var polyline = new BMap.Polyline([
new BMap.Point(116.399, 39.910),
new BMap.Point(116.405, 39.920),
new BMap.Point(116.425, 39.900)
], {strokeColor: "blue", strokeWeight: 2, strokeOpacity: 0.5});   //建立折線


// 建立圓
var circle = new BMap.Circle(
point, 1500,
{strokeColor: "blue",
  fillColor: "#ccc",
  strokeWeight: 2,
  strokeOpacity: 0.5,
  fillOpacity: 0.7}
); 


// 多邊形
var polygon = new BMap.Polygon([
new BMap.Point(116.387112, 39.920977),
new BMap.Point(116.385243, 39.913063),
new BMap.Point(116.394226, 39.917988),
new BMap.Point(116.401772, 39.921364),
new BMap.Point(116.41248, 39.927893)
], {strokeColor: "blue", strokeWeight: 2, strokeOpacity: 0.5}); 


//建立矩形
var pStart = new BMap.Point(116.392214, 39.918985);
var pEnd = new BMap.Point(116.41478, 39.911901);
var rectangle = new BMap.Polygon([
new BMap.Point(pStart.lng, pStart.lat),
new BMap.Point(pEnd.lng, pStart.lat),
new BMap.Point(pEnd.lng, pEnd.lat),
new BMap.Point(pStart.lng, pEnd.lat)
], {strokeColor: "blue", strokeWeight: 2, strokeOpacity: 0.5});  


// 開啓(關閉)點線面的編輯(能夠拖拽，移動點)
polygon.enableEditing()
polygon.disableEditing()


// 文字label
var opts = {
  position : new BMap.Point(116.417854,39.921988),    // 指定文本標註所在的地理位置
  offset   : new BMap.Size(30, -30)    //設置文本偏移量
}

var label = new BMap.Label("歡迎使用百度地圖，這是一個簡單的文本標註哦~", opts);  // 建立文本標註對象
label.setStyle({
  color : "red",
  fontSize : "12px",
  height : "20px",
  lineHeight : "20px",
  fontFamily:"微軟雅黑"
});
  
// 覆蓋物顯示，隱藏
marker.show()
marker.hide()

// 添加覆蓋物  
map.addOverlay(marker);    

// 清除覆蓋物
map.clearOverlays();

刪除指定覆蓋物

getOverlays方法能夠獲取 覆蓋物數組，getLabel方法能夠，獲取他的label 
function deletePoint(){
        var allOverlay = map.getOverlays();
        for (var i = 0; i < allOverlay.length -1; i++){
            if(allOverlay[i].getLabel().content == "我是id=1"){
                map.removeOverlay(allOverlay[i]);
                return false;
            }
        }
    }

marker 自定義icon

// 建立小狐狸icon
var pt = new BMap.Point(116.417, 39.909);
var myIcon = new BMap.Icon("http://lbsyun.baidu.com/jsdemo/img/fox.gif", new BMap.Size(300,157));
var marker2 = new BMap.Marker(pt,{icon:myIcon});  // 建立標註
map.addOverlay(marker2);

加載海量點

// data source 
var data = {"data":[[74.438,39.006,1]]}

if (document.createElement('canvas').getContext) {  // 判斷當前瀏覽器是否支持繪製海量點
    var points = [];  // 添加海量點數據
    for (var i = 0; i < data.data.length; i++) {
      points.push(new BMap.Point(data.data[i][0], data.data[i][1]));
    }
    var options = {
        size: BMAP_POINT_SIZE_SMALL,
        shape: BMAP_POINT_SHAPE_STAR,
        color: '#d340c3'
    }
    var pointCollection = new BMap.PointCollection(points, options);  // 初始化PointCollection
    pointCollection.addEventListener('click', function (e) {
      alert('單擊點的座標爲：' + e.point.lng + ',' + e.point.lat);  // 監聽點擊事件
    });
    map.addOverlay(pointCollection);  // 添加Overlay
} else {
    alert('請在chrome、safari、IE8+以上瀏覽器查看本示例');
}

兩點之間 畫弧線 圓弧

//  引入一個庫 
 <script type="text/javascript" src="http://api.map.baidu.com/library/CurveLine/1.5/src/CurveLine.min.js"></script>
 
var points = []
points.push( new BMap.Point(116.432045,39.910683) )
points.push( new BMap.Point(120.129721,30.314429) )
points.push( new BMap.Point(121.491121,25.127053) )
var curve = new BMapLib.CurveLine(points, {strokeColor:"blue", strokeWeight:3, strokeOpacity:0.5}); //建立弧線對象
map.addOverlay(curve); //添加到地圖中
curve.enableEditing(); //開啓編輯功能
  
//  centre:橢圓中心點,X:橫向經度,Y:縱向緯度
function add_oval(centre,x,y){
  var assemble= []
  var angle;
  var dot;
  var tangent=x/y;
  for(i=0;i<36;i++)
  {
    angle = (2* Math.PI / 36) * i;
    dot = new BMap.Point(centre.lng+Math.sin(angle)*y*tangent, centre.lat+Math.cos(angle)*y);
    assemble.push(dot);
  }
  return assemble;
}
var oval = new BMap.Polygon(add_oval(point,0.1,0.3), {strokeColor:"blue", strokeWeight:6, strokeOpacity:0.5});
map.addOverlay(oval);

畫行政區

function getBoundary(){
  var bdary = new BMap.Boundary();
  console.log(bdary)
  bdary.get("上海市徐彙區", function(rs){       //獲取行政區域
    map.clearOverlays();        //清除地圖覆蓋物 
    
    // rs.boundaries 是一個數組，每一個元素，是地理位置的字符串 "12,12;123,23"
    var count = rs.boundaries.length; 
    if (count === 0) {
      alert('未能獲取當前輸入行政區域');
      return ;
    }
    console.log(rs.boundaries)
    var pointArray = [];
    for (var i = 0; i < count; i++) {
      var ply = new BMap.Polygon(rs.boundaries[i],
        {
          strokeWeight: 2,
          strokeColor: "#ff0000",
          fillColor: 'blue'
        }
        ); //創建多邊形覆蓋物
      map.addOverlay(ply);  //添加覆蓋物
      pointArray = pointArray.concat(ply.getPath());
      console.log(pointArray)
    }
    map.setViewport(pointArray);    //調整視野
    addlabel();
  });
}

自定義覆蓋物

// 複雜的自定義覆蓋物
function ComplexCustomOverlay(point, text, mouseoverText){
  this._point = point;
  this._text = text;
  this._overText = mouseoverText;
}

ComplexCustomOverlay.prototype = new BMap.Overlay();
ComplexCustomOverlay.prototype.initialize = function(map){
  this._map = map;
  var div = this._div = document.createElement("div");
  div.style.position = "absolute";
  div.style.zIndex = BMap.Overlay.getZIndex(this._point.lat);
  div.style.backgroundColor = "#EE5D5B";
  div.style.border = "1px solid #BC3B3A";
  div.style.color = "white";
  div.style.height = "18px";
  div.style.padding = "2px";
  div.style.lineHeight = "18px";
  div.style.whiteSpace = "nowrap";
  div.style.MozUserSelect = "none";
  div.style.fontSize = "12px"
  var span = this._span = document.createElement("span");
  div.appendChild(span);
  span.appendChild(document.createTextNode(this._text));
  var that = this;

  var arrow = this._arrow = document.createElement("div");
  arrow.style.background = "url(http://map.baidu.com/fwmap/upload/r/map/fwmap/static/house/images/label.png) no-repeat";
  arrow.style.position = "absolute";
  arrow.style.width = "11px";
  arrow.style.height = "10px";
  arrow.style.top = "22px";
  arrow.style.left = "10px";
  arrow.style.overflow = "hidden";
  div.appendChild(arrow);

  div.onmouseover = function(){
    this.style.backgroundColor = "#6BADCA";
    this.style.borderColor = "#0000ff";
    this.getElementsByTagName("span")[0].innerHTML = that._overText;
    arrow.style.backgroundPosition = "0px -20px";
  }

  div.onmouseout = function(){
    this.style.backgroundColor = "#EE5D5B";
    this.style.borderColor = "#BC3B3A";
    this.getElementsByTagName("span")[0].innerHTML = that._text;
    arrow.style.backgroundPosition = "0px 0px";
  }

  mp.getPanes().labelPane.appendChild(div);

  return div;
}
ComplexCustomOverlay.prototype.draw = function(){
  var map = this._map;
  var pixel = map.pointToOverlayPixel(this._point);
  this._div.style.left = pixel.x - parseInt(this._arrow.style.left) + "px";
  this._div.style.top  = pixel.y - 30 + "px";
}

var txt = "銀湖海岸城", mouseoverTxt = txt + " " + parseInt(Math.random() * 1000,10) + "套" ;

var myCompOverlay = new ComplexCustomOverlay(new BMap.Point(116.407845,39.914101), "銀湖海岸城",mouseoverTxt);

mp.addOverlay(myCompOverlay);

點聚合(放大縮小)

<script type="text/javascript" src="http://api.map.baidu.com/library/TextIconOverlay/1.2/src/TextIconOverlay_min.js"></script>
<script type="text/javascript" src="http://api.map.baidu.com/library/MarkerClusterer/1.2/src/MarkerClusterer_min.js"></script>

// markers 是一個marker數組 
var markerClusterer = new BMapLib.MarkerClusterer(map, {markers:markers});

矢量圖 圖標

var vectorFCArrow = new BMap.Marker(new BMap.Point(point.lng-0.01,point.lat), {
  // 初始化方向向上的閉合箭頭
  icon: new BMap.Symbol(BMap_Symbol_SHAPE_FORWARD_CLOSED_ARROW, {
    scale: 5,
    strokeWeight: 1,
    rotation: 0,//順時針旋轉30度
    fillColor: 'red',
    fillOpacity: 0.8
  })
});

var vectorStar = new BMap.Marker(new BMap.Point(point.lng+0.03,point.lat-0.03), {
  // 初始化五角星symbol
  icon: new BMap.Symbol(BMap_Symbol_SHAPE_STAR, {
    scale: 5,
    fillColor: "pink",
    fillOpacity: 0.8
  })
});

信息彈窗

var infoWindow = new BMap.InfoWindow("地址：北京市東城區王府井大街88號樂天銀泰百貨八層", {
  width : 200,     // 信息窗口寬度
  height: 100,     // 信息窗口高度
  title : "海底撈王府井店" , // 信息窗口標題
  enableMessage:true,//設置容許信息窗發送短息
  message:"親耐滴，晚上一塊兒吃個飯吧？戳下面的連接看下地址喔~"
});  
marker.addEventListener("click", function(){
  map.openInfoWindow(infoWindow,point); //開啓信息窗口
});

鼠標右鍵

除了地圖，marker也支持加右鍵 
var menu = new BMap.ContextMenu();
    var txtMenuItem = [
        {
            text:'放大',
            callback:function(){map.zoomIn()}
        },
        {
            text:'縮小',
            callback:function(){map.zoomOut()}
        }
    ];
    for(var i=0; i < txtMenuItem.length; i++){
        menu.addItem(new BMap.MenuItem(txtMenuItem[i].text,txtMenuItem[i].callback,100));
    }
    map.addContextMenu(menu);

鼠標測距

//  引入插件 
<script type="text/javascript" src="http://api.map.baidu.com/library/DistanceTool/1.2/src/DistanceTool_min.js"></script>


var myDis = new BMapLib.DistanceTool(map);
map.addEventListener("load",function(){
  myDis.open();  //開啓鼠標測距
  //myDis.close();  //關閉鼠標測距大
});
    
// 獲取點擊點座標 
map.addEventListener("click",function(e){
  alert(e.point.lng + "," + e.point.lat);
});
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