js实现百度地图同时显示多个路书效果

本文介绍了js实现百度地图同时显示多个路书效果，主要是以自行车的还车地点作为实例，具体代码如下：

启动路书：

<script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=自己的ak"></script>
<script type="text/javascript" src="js/lushu.js"></script><!--路书 -->

var BMapLib = window.BMapLib = BMapLib || {};
(function() {
  var b, a = b = a || {
    version : "1.5.0"
  };
  a.guid = "$BAIDU$";
  (function() {
    window[a.guid] = window[a.guid] || {};
    a.dom = a.dom || {};
    a.dom.g = function(e) {
      if ("string" == typeof e || e instanceof String) {
        return document.getElementById(e)
      } else {
        if (e && e.nodeName && (e.nodeType == 1 || e.nodeType == 9)) {
          return e
        }
      }
      return null
    };
    a.g = a.G = a.dom.g;
    a.lang = a.lang || {};
    a.lang.isString = function(e) {
      return "[object String]" == Object.prototype.toString.call(e)
    };
    a.isString = a.lang.isString;
    a.dom._g = function(e) {
      if (a.lang.isString(e)) {
        return document.getElementById(e)
      }
      return e
    };
    a._g = a.dom._g;
    a.dom.getDocument = function(e) {
      e = a.dom.g(e);
      return e.nodeType == 9 ? e : e.ownerDocument || e.document
    };
    a.browser = a.browser || {};
    a.browser.ie = a.ie = /msie (\d+\.\d+)/i.test(navigator.userAgent) ? (document.documentMode || +RegExp["\x241"])
        : undefined;
    a.dom.getComputedStyle = function(f, e) {
      f = a.dom._g(f);
      var h = a.dom.getDocument(f), g;
      if (h.defaultView && h.defaultView.getComputedStyle) {
        g = h.defaultView.getComputedStyle(f, null);
        if (g) {
          return g[e] || g.getPropertyValue(e)
        }
      }
      return ""
    };
    a.dom._styleFixer = a.dom._styleFixer || {};
    a.dom._styleFilter = a.dom._styleFilter || [];
    a.dom._styleFilter.filter = function(f, j, k) {
      for (var e = 0, h = a.dom._styleFilter, g; g = h[e]; e++) {
        if (g = g[k]) {
          j = g(f, j)
        }
      }
      return j
    };
    a.string = a.string || {};
    a.string.toCamelCase = function(e) {
      if (e.indexOf("-") < 0 && e.indexOf("_") < 0) {
        return e
      }
      return e.replace(/[-_][^-_]/g, function(f) {
        return f.charAt(1).toUpperCase()
      })
    };
    a.dom.getStyle = function(g, f) {
      var i = a.dom;
      g = i.g(g);
      f = a.string.toCamelCase(f);
      var h = g.style[f] || (g.currentStyle ? g.currentStyle[f] : "")
          || i.getComputedStyle(g, f);
      if (!h) {
        var e = i._styleFixer[f];
        if (e) {
          h = e.get ? e.get(g) : a.dom.getStyle(g, e)
        }
      }
      if (e = i._styleFilter) {
        h = e.filter(f, h, "get")
      }
      return h
    };
    a.getStyle = a.dom.getStyle;
    a.dom._NAME_ATTRS = (function() {
      var e = {
        cellpadding : "cellPadding",
        cellspacing : "cellSpacing",
        colspan : "colSpan",
        rowspan : "rowSpan",
        valign : "vAlign",
        usemap : "useMap",
        frameborder : "frameBorder"
      };
      if (a.browser.ie < 8) {
        e["for"] = "htmlFor";
        e["class"] = "className"
      } else {
        e.htmlFor = "for";
        e.className = "class"
      }
      return e
    })();
    a.dom.setAttr = function(f, e, g) {
      f = a.dom.g(f);
      if ("style" == e) {
        f.style.cssText = g
      } else {
        e = a.dom._NAME_ATTRS[e] || e;
        f.setAttribute(e, g)
      }
      return f
    };
    a.setAttr = a.dom.setAttr;
    a.dom.setAttrs = function(g, e) {
      g = a.dom.g(g);
      for ( var f in e) {
        a.dom.setAttr(g, f, e[f])
      }
      return g
    };
    a.setAttrs = a.dom.setAttrs;
    a.dom.create = function(g, e) {
      var h = document.createElement(g), f = e || {};
      return a.dom.setAttrs(h, f)
    };
    a.object = a.object || {};
    a.extend = a.object.extend = function(g, e) {
      for ( var f in e) {
        if (e.hasOwnProperty(f)) {
          g[f] = e[f]
        }
      }
      return g
    }
  })();
  var c = BMapLib.LuShu = function(g, f, e) {
    if (!f || f.length < 1) {
      return
    }
    this._map = g;
    this._path = f;
    this.i = 0;
    this._setTimeoutQuene = [];
    this._projection = this._map.getMapType().getProjection();
    this._opts = {
      icon : null,
      speed : 4000,
      defaultContent : ""
    };
    this._setOptions(e);
    this._rotation = 0;
    if (!this._opts.icon instanceof BMap.Icon) {
      this._opts.icon = defaultIcon
    }
  };
  c.prototype._setOptions = function(e) {
    if (!e) {
      return
    }
    for ( var f in e) {
      if (e.hasOwnProperty(f)) {
        this._opts[f] = e[f]
      }
    }
  };
  c.prototype.start = function() {
    var f = this, e = f._path.length;
    if (f.i && f.i < e - 1) {
      if (!f._fromPause) {
        return
      } else {
        if (!f._fromStop) {
          f._moveNext(++f.i)
        }
      }
    } else {
      f._addMarker();
      f._timeoutFlag = setTimeout(function() {
        f._addInfoWin();
        if (f._opts.defaultContent == "") {
          f.hideInfoWindow()
        }
        f._moveNext(f.i)
      }, 400)
    }
    this._fromPause = false;
    this._fromStop = false
  }, c.prototype.stop = function() {
    this.i = 0;
    this._fromStop = true;
    clearInterval(this._intervalFlag);
    this._clearTimeout();
    for (var g = 0, f = this._opts.landmarkPois, e = f.length; g < e; g++) {
      f[g].bShow = false
    }
  };
  c.prototype.pause = function() {
    clearInterval(this._intervalFlag);
    this._fromPause = true;
    this._clearTimeout()
  };
  c.prototype.hideInfoWindow = function() {
    this._overlay._div.style.visibility = "hidden"
  };
  c.prototype.showInfoWindow = function() {
    this._overlay._div.style.visibility = "visible"
  };
  a.object
      .extend(
          c.prototype,
          {
            _addMarker : function(f) {
              if (this._marker) {
                this.stop();
                this._map.removeOverlay(this._marker);
                clearTimeout(this._timeoutFlag)
              }
              this._overlay
                  && this._map.removeOverlay(this._overlay);
              var e = new BMap.Marker(this._path[0]);
              this._opts.icon && e.setIcon(this._opts.icon);
              this._map.addOverlay(e);
              e.setAnimation(BMAP_ANIMATION_DROP);
              this._marker = e
            },
            _addInfoWin : function() {
              var f = this;
              var e = new d(f._marker.getPosition(),
                  f._opts.defaultContent);
              e.setRelatedClass(this);
              this._overlay = e;
              this._map.addOverlay(e)
            },
            _getMercator : function(e) {
              return this._map.getMapType().getProjection()
                  .lngLatToPoint(e)
            },
            _getDistance : function(f, e) {
              return Math.sqrt(Math.pow(f.x - e.x, 2)
                  + Math.pow(f.y - e.y, 2))
            },
            _move : function(n, j, m) {
              var i = this, h = 0, e = 10, f = this._opts.speed
                  / (1000 / e), l = this._projection
                  .lngLatToPoint(n), k = this._projection
                  .lngLatToPoint(j), g = Math.round(i
                  ._getDistance(l, k)
                  / f);
              if (g < 1) {
                i._moveNext(++i.i);
                return
              }
              i._intervalFlag = setInterval(
                  function() {
                    if (h >= g) {
                      clearInterval(i._intervalFlag);
                      if (i.i > i._path.length) {
                        return
                      }
                      i._moveNext(++i.i)
                    } else {
                      h++;
                      var o = m(l.x, k.x, h, g), r = m(
                          l.y, k.y, h, g), q = i._projection
                          .pointToLngLat(new BMap.Pixel(
                              o, r));
                      if (h == 1) {
                        var p = null;
                        if (i.i - 1 >= 0) {
                          p = i._path[i.i - 1]
                        }
                        if (i._opts.enableRotation == true) {
                          i.setRotation(p, n, j)
                        }
                        if (i._opts.autoView) {
                          if (!i._map.getBounds()
                              .containsPoint(q)) {
                            i._map.setCenter(q)
                          }
                        }
                      }
                      i._marker.setPosition(q);
                      i._setInfoWin(q)
                    }
                  }, e)
            },
            setRotation : function(l, f, m) {
              var j = this;
              var e = 0;
              f = j._map.pointToPixel(f);
              m = j._map.pointToPixel(m);
              if (m.x != f.x) {
                var k = (m.y - f.y) / (m.x - f.x), g = Math
                    .atan(k);
                e = g * 360 / (2 * Math.PI);
                if (m.x < f.x) {
                  e = -e + 90 + 90
                } else {
                  e = -e
                }
                j._marker.setRotation(-e)
              } else {
                var h = m.y - f.y;
                var i = 0;
                if (h > 0) {
                  i = -1
                } else {
                  i = 1
                }
                j._marker.setRotation(-i * 90)
              }
              return
            },
            linePixellength : function(f, e) {
              return Math.sqrt(Math.abs(f.x - e.x)
                  * Math.abs(f.x - e.x) + Math.abs(f.y - e.y)
                  * Math.abs(f.y - e.y))
            },
            pointToPoint : function(f, e) {
              return Math.abs(f.x - e.x) * Math.abs(f.x - e.x)
                  + Math.abs(f.y - e.y) * Math.abs(f.y - e.y)
            },
            _moveNext : function(e) {
              var f = this;
              if (e < this._path.length - 1) {
                f._move(f._path[e], f._path[e + 1],
                    f._tween.linear)
              }
            },
            _setInfoWin : function(g) {
              var f = this;
              if (!f._overlay) {
                return
              }
              f._overlay.setPosition(g, f._marker.getIcon().size);
              var e = f._troughPointIndex(g);
              if (e != -1) {
                clearInterval(f._intervalFlag);
                f._overlay
                    .setHtml(f._opts.landmarkPois[e].html);
                f._overlay.setPosition(g,
                    f._marker.getIcon().size);
                f._pauseForView(e)
              } else {
                f._overlay.setHtml(f._opts.defaultContent)
              }
            },
            _pauseForView : function(e) {
              var g = this;
              var f = setTimeout(function() {
                g._moveNext(++g.i)
              }, g._opts.landmarkPois[e].pauseTime * 1000);
              g._setTimeoutQuene.push(f)
            },
            _clearTimeout : function() {
              for ( var e in this._setTimeoutQuene) {
                clearTimeout(this._setTimeoutQuene[e])
              }
              this._setTimeoutQuene.length = 0
            },
            _tween : {
              linear : function(f, j, h, i) {
                var e = f, l = j - f, g = h, k = i;
                return l * g / k + e
              }
            },
            _troughPointIndex : function(f) {
              var h = this._opts.landmarkPois, j;
              for (var g = 0, e = h.length; g < e; g++) {
                if (!h[g].bShow) {
                  j = this._map.getDistance(new BMap.Point(
                      h[g].lng, h[g].lat), f);
                  if (j < 10) {
                    h[g].bShow = true;
                    return g
                  }
                }
              }
              return -1
            }
          });
  function d(e, f) {
    this._point = e;
    this._html = f
  }
  d.prototype = new BMap.Overlay();
  d.prototype.initialize = function(e) {
    var f = this._div = a.dom
        .create(
            "div",
            {
              style : "border:solid 1px #ccc;width:auto;min-width:50px;text-align:center;position:absolute;background:#fff;color:#000;font-size:12px;border-radius: 10px;padding:5px;white-space: nowrap;"
            });
    f.innerHTML = this._html;
    e.getPanes().floatPane.appendChild(f);
    this._map = e;
    return f
  };
  d.prototype.draw = function() {
    this.setPosition(this.lushuMain._marker.getPosition(),
        this.lushuMain._marker.getIcon().size)
  };
  a.object.extend(d.prototype, {
    setPosition : function(h, i) {
      var f = this._map.pointToOverlayPixel(h), e = a.dom.getStyle(
          this._div, "width"), g = a.dom
          .getStyle(this._div, "height");
      overlayW = parseInt(this._div.clientWidth || e, 10),
          overlayH = parseInt(this._div.clientHeight || g, 10);
      this._div.style.left = f.x - overlayW / 2 + "px";
      this._div.style.bottom = -(f.y - i.height) + "px"
    },
    setHtml : function(e) {
      this._div.innerHTML = e
    },
    setRelatedClass : function(e) {
      this.lushuMain = e
    }
  })
})();

function showallrecord(starttime,endtime){//显示多条开始结束时间之间的自行车路书
  var bikeId=null;
  $.getJSON("./GetBickIdServlet",function(json){
    bikeId = json;//所有自行车编号
  });
  var json={
      "StartTime":starttime,//开始时间
      "EndTime":endtime//结束时间
  };
  //创建二维数组，例如pointArray[i]中i自行车编号，pointArray[i][j]为编号为i的自行车的所有借还站点信息
  $.getJSON("./GetAllRecordServlet",{json:JSON.stringify(json)},function(json){
    var j = 0;
    var stationlonlist=new Array();
    var stationlatlist=new Array();
    var pointArray=new Array();
    var bikeIdlist = new Array();
    for(var i = 0; i < bikeId.length; i++){
      stationlonlist[i] = new Array();
      stationlatlist[i] = new Array();
      pointArray[i] = new Array();
      bikeIdlist[i] = bikeId[i].BikeId;
    }
    var tt = json.length < 200?json.length:200;//如果查询出来的自行车借还站点记录多于200条，则显示200条。（待完善）
    for (var row = 0; row < pointArray.length; row++) {
      while (j < tt) {
        var k = j;
        var p = 0;
        var stationlon = parseFloat(json[j].Stationlon);// String类型转换成float类型
        stationlonlist[row][p]=stationlon;// 将stationlon放到stationlonlist里
        var stationlat = parseFloat(json[j].Stationlat);
        stationlatlist[row][p]=stationlat;// 将stationlat放到stationlatlist里
        pointArray[row][p] = new BMap.Point(stationlon,stationlat);
        while (bikeIdlist[row] == json[k + 1].BikeId) {
          k++;
          p++;
          stationlon= parseFloat(json[k].Stationlon);// String类型转换成float类型
          stationlonlist[row][p]=stationlon;// 将stationlon放到stationlonlist里
          stationlat= parseFloat(json[k].Stationlat);
          stationlatlist[row][p] =stationlat;// 将stationlat放到stationlatlist里
          pointArray[row][p] = new BMap.Point(stationlon, stationlat);
        }
        addMarkertest(pointArray,row);//添加标记点
        j = k + 1;
        break;
      }
      var bikespeedtest = speedtest(pointArray,row);//每辆自行车路书的速度
      polylinetest(pointArray,row,stationlonlist,stationlatlist);//每辆自行车借还站点间画折线
      lushutest(pointArray,bikespeedtest,row,stationlonlist,stationlatlist);//每辆自行车借还站点的路书路径
    }
    map.setViewport(pointArray);
  });
}

function speedtest(pointArray,row){//根据自行车的借还时间差来显示不同的路书速度（待完善）
  var distance = 0;//直行车走过的路径长度
  for(var i = 0; i < pointArray[row].length-1; i++){
    distance += (map.getDistance(pointArray[row][i],pointArray[row][i+1]));//自行车借还站点的路径长度
  }
  return distance/20;//速度=路径长度/时间（此处时间固定，可改为根据数据库读取的时间）
}

//
function polylinetest(pointArray,row,stationlonlist,stationlatlist){
  var points = new Array();
  for(var i = 0; i < pointArray[row].length; i++){
    points[i] = new BMap.Point(parseFloat(stationlonlist[row][i]), parseFloat(stationlatlist[row][i]));
  }
  //增加点与点之间的连线
  var polyline = new BMap.Polyline(points, {
    strokeColor : getColor(),
    strokeWeight : 2,
    strokeOpacity : 0.5
  }); // 创建折线
  map.addOverlay(polyline); // 绘制折线
}

//
function lushutest(pointArray,bikespeedtest,row,stationlonlist,stationlatlist){
  var points = new Array();
  for(var i = 0; i < pointArray[row].length; i++){
    points[i] = new BMap.Point(parseFloat(stationlonlist[row][i]), parseFloat(stationlatlist[row][i]));
  }
  var lushu = new BMapLib.LuShu(map, points, {
    defaultContent : "",
    autoView : true, // 是否开启自动视野调整，如果开启那么路书在运动过程中会根据视野自动调整
    icon : new BMap.Icon('photo/bike.png', new BMap.Size(22, 22), {
      anchor : new BMap.Size(10, 25)
    }),
    // enableRotation: true, //是否设置marker随着道路的走向进行旋转
    speed : bikespeedtest,
  });
  lushu.start();
}

//生成折线的随机颜色
function sj16(){
  var sjshu=Math.round(Math.random()*10*2);
  do
  {
    sjshu=Math.round(Math.random()*10*2);
  }while (sjshu>=14);
  return sjshu;
}
function getColor(){
  var hex = ['1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'];
  var yanse="";
  for(i=0; i<6; i++){
    yanse+=hex[sj16()];
  }
  return "#"+yanse
}

效果图：

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